WorldWideScience

Sample records for shien system ni

  1. Report for fiscal 1997 on simple operation type CAD/CAM system development through international cooperation. Research achievements; 1997 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kenkyu seika

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This paper reports the achievements in fiscal 1995 in the research and development project for an electronics design and production aid system of simple operation type (MATIC). The project is intended to support works of Asian countries on the information society, and enhance levels of the manufacturing industries and supportive industries by utilizing the information technologies. The working group (WG)I, related to automobiles and components thereof, improved functions of the primary system and continued demonstration tests. The group launched for the secondary system a system development that makes timely information transmission and receipt possible among research and development enterprises, local assembly enterprises and facility and parts suppliers. The WGII (household appliances and their parts) designed and developed an electronic catalog system based on pre-prototypes developed independently by different countries, and performed demonstration tests. The WGIII (textiles and apparels) carried out with China demonstration tests on the international EDI system, translation system and CAD/CAM system. It also developed a sewing technology standards system. It installed equipment and devices in Indonesia for preparation of the demonstration tests. (NEDO)

  2. Achievement report for fiscal 1998 on Simple Operation Type CAD/CAM System Development through International Cooperation; 1998 nendo 'kan'i sosagata denshi sekkei seian shien system no kaihatsu ni kansru kenkyu kyoryoku' ni kansuru hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The subject project is implemented in the fields of automobiles and their parts, electrical home appliances and their parts, and textile and apparel. In the field of automobiles and their parts, a prototype is developed of an integrated information management system which is to serve between corporation head offices and assembling businesses overseas, and another prototype is developed of an inter-business technical data serving system which is to serve between overseas assembling businesses and supporting businesses, both involving Japan, Indonesia, and Thailand. In the field of electrical home appliances and their parts, a prototype is developed of an electronic catalog system in a joint endeavor with research institutes of Indonesia, Malaysia, Singapore, and Thailand, and a demonstration test is conducted. A design concurrent engineering system is developed by Japan and Malaysian research institutes. In the field of textile and apparel, prototypes are developed, by Japanese, Chinese, and Indonesian apparel manufactures, of an apparel manufacturing specification system, international EDI (electronic data interchange) system, translation system, and a CAD (computer-aided design)/CAM (computer-aided manufacturing) data interchange system. (NEDO)

  3. Report on simple operation type CAD/CAM system development through international cooperation. Current statuses of Asian countries; 'Kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Asia shokoku no jokyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-03-01

    Information systems, mainly aided by computers, are becoming increasingly important, contributing to development of wide areas of societies and economics, to begin with. However, few developing countries have established sufficient information systems, in spite of their strong desires to do so, which will further widen the gap between them and advanced countries, where these systems are acceleratedly advancing. Given these situations, Center of International Cooperation for Computerization (CICC) has been implementing various projects for providing assistance to and cooperation with oversea countries which are trying to develop information systems. This report summarizes the project, which CICC has been commissioned by NEDO as part of the cooperation programs, for manufacturing technology supported by advanced and integrated information system through international cooperation. It outlines the research cooperation memoranda NEDO has concluded with Indonesia, Malaysia, Singapore and Thailand, and the authorities of China, Indonesia, Malaysia, Singapore and Thailand. (NEDO)

  4. Report on 'manufacturing technology supported by advanced and integrated information system through international cooperation'. Domestic surveys; 'Kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kokunai chosa kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-03-01

    The committee of manufacturing technology supported by advanced and integrated information system through international cooperation (MATIC) has been established as the organization to promote necessary surveys, deliberate the research and development guidelines and themes, and thereby support the joint R and D projects with Asian countries to improve information systems for their manufacturing industries by MATIC. The R and D skeletons are set in FY 1994 for the works in and after FY 1995. The relationships between affiliates of Japanese enterprises and local enterprises, actual conditions of the manufacturing industries and so on are surveyed, in order to extract problems related to the information systems for the promising manufacturing industries in the Asian countries. Each industry has its own characteristics with respect to, e.g., numbers f parts and process steps, product life cycle, extent of automation, skill of workers, and spread of the related industries. Therefore, 3 industrial areas are picked up as those considered to be adequate for the case studies, and surveyed for the system functions, performance, elementary techniques and so on which are required to establish the information systems for their production systems. (NEDO)

  5. Report for fiscal 1995 on simple operation type CAD/CAM system development through international cooperation. Research results; 1995 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kenkyu seika

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    This 5-year project beginning in FY 1994 is aimed at joint researches with various Asian countries for development of simply operable electronic designs and manufacturing support systems, which supports development of supporting industries (SI) for manufacturing industries in these countries. The project is being implemented in a total of 5 countries, China, Indonesia, Malaysia, Singapore and Thailand, in cooperation with the research institutes with which NEDO has concluded the basic contracts. The following three working groups are established to study construction of the model systems and design these systems for promotion of the joint project in each country; (1) automobiles and their parts, (2) home electric/electronic appliances, and their parts, and (3) textiles and apparels. The FY 1995 project results are described. The working group (1) covers definitions of the business models and conditions for systematizing these models for the demonstration tests. The working group (2) covers development of the electronic catalogues, electronic yellow pages/preproto types, and concurrent engineering. The working group (3) covers the SGML sewing technique specification systems, surveys and utilization tests for network infrastructures, international EDI systems for the textile industry, and translation systems for technical terms of the textile industry. (NEDO)

  6. FY 2000 Report on the survey results. Survey on international cooperation for development of a system for supporting low-invasion surgical operations; 2000 nendo teishinshu shujutsu shien system kaihatsu ni kakawaru kokusai kyoryoku ni kansuru chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    The international Medical Treatment Symposium and Exhibition were held from July 20 to the end of August, 2000 in Hannover in Germany, in which the Japan's system for supporting low-invasion surgical operations was presented and information was exchanged for the system. A total of 50 to 100 neurosurgeons visited the exhibition, held as part of the symposium, every day from July 21 to 24. The system for supporting low-invasion surgical operations is rated as the most advanced one in the world. It attracted much attention, because a number of attendees applied for operating manipulator. The research trends seen in the symposium point to early diagnosis of diseases, finer surgical operations, low-invasion type operations, use of high-function diagnosis devices for improving operations, real-time imaging, and application of DNA diagnosis to pathological diagnosis, among others. Japan is leading the world in the technological areas of micromachines, robotics, high-vision and diagnosis. The bold researches, e.g., those on artificial visual and hearing systems to be embedded in the head, are pursued more extensively in the overseas countries. (NEDO)

  7. Basic studies on design supporting system of offshore structure. Part 2. Implementation of structural design supporting system of offshore structures; Kaiyo kozobutsu wo taisho to shita sekkei shien system ni kansuru kisoteki kenkyu. 2. Kaiyo kozobutsu no kozo sekkei shien system no kochiku

    Energy Technology Data Exchange (ETDEWEB)

    Nomoto, T.; Hamada, K.; Aoyama, K. [The University of Tokyo, Tokyo (Japan)

    1996-12-31

    In order to improve the existing design-supporting system for offshore structures, new functions are added to evaluate information of the products, especially those for structural designs. The structural analysis system should be provided with a function of design modification, to efficiently support the structural analysis of these structures. The new system adds hierarchy of various offshore structure models and three-dimensional dimensions to clarify structural and geometrical constraints and design-modification function. The design-modification function is included by use of the hierarchy. The other new functions are finite element analysis systems for the main structure and components, and rigidity calculation for the main structure. The main structure and functional element models are confirmed to be useful also for utilization of information, and provide necessary information of the product models. 11 refs., 11 figs.

  8. Basic studies on design supporting system of offshore structure. Part 2. Implementation of structural design supporting system of offshore structures; Kaiyo kozobutsu wo taisho to shita sekkei shien system ni kansuru kisoteki kenkyu. 2. Kaiyo kozobutsu no kozo sekkei shien system no kochiku

    Energy Technology Data Exchange (ETDEWEB)

    Nomoto, T; Hamada, K; Aoyama, K [The University of Tokyo, Tokyo (Japan)

    1997-12-31

    In order to improve the existing design-supporting system for offshore structures, new functions are added to evaluate information of the products, especially those for structural designs. The structural analysis system should be provided with a function of design modification, to efficiently support the structural analysis of these structures. The new system adds hierarchy of various offshore structure models and three-dimensional dimensions to clarify structural and geometrical constraints and design-modification function. The design-modification function is included by use of the hierarchy. The other new functions are finite element analysis systems for the main structure and components, and rigidity calculation for the main structure. The main structure and functional element models are confirmed to be useful also for utilization of information, and provide necessary information of the product models. 11 refs., 11 figs.

  9. Marketing analysis support system; Marketing bunseki shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-01-10

    Fuji Electric Co., Ltd., in collaboration with Shitashion Japan and Arthur Andersen Ltd., developed a 'marketing analysis support system' which integrally analyzes evaluation factors of various dimensions explaining consumers' purchasing behaviors and which supports business for the efficient operation of product development and demand prediction. This system breaks down products into each evaluation factor from psychological and physical viewpoints, and carries out various kinds of multivariate analysis, thereby making it easy to understand visually, for example, what evaluation factors decide relative positional relations between evaluation factors or between products as well as the position of a product in the whole. Further, more precise marketing analysis and prediction become possible by visually grasping blank areas of products, extent of competition, distribution of products, composition of product series, etc. (translated by NEDO)

  10. Fiscal 1998 research cooperation project on development of the easy-to-operate electronic design/production support system; 1998 nendo kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku jigyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This report summarizes 'Research cooperation on the easy-to- operate electronic design/production support system' which was promoted together with Asian countries as a part of the international research projects. This project is promoted by joint research with research organizations in China, Indonesia, Malaysia, Singapore and Thailand. The project promotes the interexchange and cooperation of researchers along the memoranda on MATIC (Manufacturing Technology International Cooperation) concluded between NEDO and research organizations every country. The project is implemented by CICC (Center of the International Cooperation for Computerization) through the contract with NEDO. CICC is promoting this project with the production system future integrated information system committee, MATIC committee, and automobile, home appliance, fiber and apparel working groups. The project has been promoted by the survey in fiscal 1994, the basic planning in fiscal 1995-1996, and development of the prototype information system in fiscal 1996-1998. The final demonstration test is scheduled in fiscal 1998. (NEDO)

  11. Fiscal 1998 research cooperation project on development of the easy-to-operate electronic design/production support system; 1998 nendo kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku jigyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This report summarizes 'Research cooperation on the easy-to- operate electronic design/production support system' which was promoted together with Asian countries as a part of the international research projects. This project is promoted by joint research with research organizations in China, Indonesia, Malaysia, Singapore and Thailand. The project promotes the interexchange and cooperation of researchers along the memoranda on MATIC (Manufacturing Technology International Cooperation) concluded between NEDO and research organizations every country. The project is implemented by CICC (Center of the International Cooperation for Computerization) through the contract with NEDO. CICC is promoting this project with the production system future integrated information system committee, MATIC committee, and automobile, home appliance, fiber and apparel working groups. The project has been promoted by the survey in fiscal 1994, the basic planning in fiscal 1995-1996, and development of the prototype information system in fiscal 1996-1998. The final demonstration test is scheduled in fiscal 1998. (NEDO)

  12. Research cooperation project on manufacturing technology supported by advanced and integrated information system through international cooperation (MATIC); Kan`i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    To support the advancement of basic industries including machine industry in Asian countries, research cooperation has been conducted for developing the manufacturing technology supported by advanced and integrated information system suitable for actual circumstances of individual countries. For the automotive and the parts industries, it is significant for the preparation works of manufacturing in overseas factories to possess common information between Japan and overseas factories. In this project, a system is constructed, which can be used in industries surrounding automotive industry, such as parts and facility industries, as well as in the automotive industry. In FY 1996, a primary system has been developed, and the demonstration tests were carried out. For the home electric machine and the parts industries, the technology applicable to the design of printed board circuit was developed, and the catalog of electronic parts was constructed. In FY 1996, a preliminary prototype system of the electronic parts catalog system was designed and developed. For the textile and apparel industries, the EDI, exchange system of CAD/CAM data, and construction of data bank were investigated. 87 figs., 19 tabs.

  13. Manufacturing technology supported by advanced and integrated information system through international cooperation in fiscal 1995; Kan`i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Informatization using mainly computers is more and more important contributing to the upgrading in society, economy and a variety of fields. As to informatization in developing countries, however, there has still been few to be seen. Accordingly, gaps are getting larger between developing countries and developed countries where informatization is acceleratedly advanced. In the light of such actual state, Center of the International Cooperation for Computerization (CICC) contracted with NEDO and promoted a project `Manufacturing technology supported by advanced and integrated information system through international cooperation.` This is a project to study jointly with five Asian countries with which NEDO made a basic contract, China, Indonesia, Malaysia, Singapore and Thailand. Working group is set up for each theme such as automobiles/parts, electric home appliances/parts, and fiber/apparel, to study the construction of a model house and the design of a system. In fiscal 1994, the field survey was conducted, and in fiscal 1995 the system design was started. 16 figs., 1 tab.

  14. Manufacturing technology supported by advanced and integrated information system through international cooperation in fiscal 1994; Kan`i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-03-01

    Among NEDO`s international research cooperation projects, the paper described Japan`s cooperation with Asian countries in development of an easy-operated electronic design/production supporting system. The project aims to realize information realtime technology by which data for design/manufacturing of machine/electronics/fiber/apparel can mutually be used among countries. For it, design data standard and electronic information exchange standard are developed. A production information integrated database system is developed for sharing processing data. Parts data are put into a library. Graphic user interface and multi-media technology are developed so as to comply with the environment of different usages. In fiscal 1994, emphasis of activities was placed on survey of the status quo of the institution of the party country, fermentation of mutual understanding, and study of a cooperative project plan. Memorandums on research cooperation were concluded with Indonesia, Malaysia, Singapore and Thailand. In addition, understanding of this project by the party country was able to be enhanced

  15. Research program for environmentally-friendly coal utilization system. Follow-up project for simplified desulfurizers (Weifang Chemical Industry Works); Kankyo chowagata sekitan riyo system donyu shien jigyo. Kan`i datsuryu setsubi ni kakawaru follow up jigyo (Weifang kakosho)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    To suppress the emission of environmental pollutants from coal utilization in China and to contribute to stable security of Japan`s energy, demonstration of clean coal technology and consolidation of diffusion base to be introduced into China have been promoted. Demonstration program for diffusing simplified desulfurizers has been promoted. For accelerating the achievement, experts of desulfurizers were delegated to Weifang Chemical Industry Works, to support the program. Exhaust gas is introduced from boiler via water spray dust remover, suction fan and centralized stack into absorption tower of the simplified wet-type desulfurizer. In the ascending process, the exhaust gas contacts with absorbent, to remove SO2 and dust. The absorbent is blasted up through the spray nozzle. The absorbent is oxidized by the air into sulfate ion in the liquid chamber at the lower part of tower, and neutralized by hydrated lime to form gypsum. Through the continuous operation for two years, understandings were remarkably increased. However, good treatment of the tax system is required for further diffusion. Though there are no problems for ordinary start and stop, emergency operation is insufficient. There are some problems in the maintenance due to the delay of finding failures. 16 figs., 1 tab.

  16. FY1995 study of aid system for the elderly and the disabled using metal hydride alloy actuators; 1995 nendo suiso kyuzo gokingata actuator ni yoru kaijo shien system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    Purpose of the project is to develop a transfer aid system for the elderly who need assistance in moving from a bed or a chair. It can make up insufficiency of assistant persons and can help to comfortably move the elderly. It has the highest demand in rehabilitation centers or hospitals. We have been designing an actuator using a metal hydride alloy for more than ten years and have confirmed that the actuator is very useful for developing the transfer. Furthermore, we have designed the transfer from a view point of human interfaces. This research was done under the above background. 1. We studied a comfortable posture for the elderly at an initial phase of standing to design the optimal knee pad using a life-size model of a transfer. Especially, we managed to lighten the burden imposed on the elderly by referring electromyographic signals at lower limbs and ground reaction forces. 2. Since the tactile sensation of the bottom of elderly person's foot gets dull, we designed a foot stage to prevent the elderly from the dull. 3. We determined the optimal mixture rate of a metal hydride alloy and developed an elastic bellows in order to design the actuator used for the transfer aid. 4. We determined the optimal compliance to prevent the elderly from a mechanical shock and designed a mechanism so that the transfer aid can work well. 5. Based on the above results, we developed the transfer aid using the metal hydride actuator. It was ascertained that it can lift a elderly person with 80kg weight by using only 40g alloy. Furthermore, it is proved that the transfer is not heavy (about 20g weight), small, silent, and moves smoothly by a battery on the market. (NEDO)

  17. FY1995 community support by mobile agents; 1995 nendo mobile agent ni yoru community keisei shien

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The purpose is to develop fundamental technologies for navigation systems and mobile computing systems in museums, theme parks and cities. Concretely, we implement software agents into the mobile computing environment which consists of PHS, mobile computers and mobile robots, and realize various functions to access regional information. We have studied on Communityware which supports human activities and communities by using mobile agents implemented into mobile computers and town robots. The mobile agents, which intelligently process information obtained in physical and virtual worlds, access regional information which is omnipresent in the environment. With respect to the approach using mobile computers, we have provided one hundred mobile computers in the international conference on multiagent systems 1996 and carried out the first experimentation of mobile computing in the world. The mobile computer has two functions: Community Viewer which displays interactions between members of communities and Social Matchmaker which supports to hold meetings by searching for people who have common interests. With respect to the approach using town robots, we have developed a robot system which can robustly behave in a complex outdoor environment by using vision agents embedded in the environment. The system aims at support of people in streets. (NEDO)

  18. Intelligent car guidance system (parking support system); Chiteki sharyo yudo system (chusha shien system)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    This system enables a driver to park the car at a predetermined spot without the driver seeing the outside scene. The system shows on a driver seat display the steps that the driver is to follow and thereby supports the driver when visibility is poor, when the parking space is difficult to approach, when the driver is a novice, or when the driver is aged. The system ensures accurate positioning of the car by showing the steering direction and angle, the car speed, and the force of braking to the driver. For this purpose, the system knows the absolute car position by the use of an RFID (Radio Frequency Identification) tag which is a kind of IC (Integrated Circuit) card and D-GPS (Differential-Global Positioning System), grasps the relative car position by the use of a gyroscope, and collects data from plural sensors, which are complementary to each other, such as a car-speed sensor and a steering sensor. (translated by NEDO)

  19. Report for fiscal 1997 on simple operation type CAD/CAM system development through international cooperation. Research achievements; 1997 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kenkyu seika

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This paper reports the achievements in fiscal 1995 in the research and development project for an electronics design and production aid system of simple operation type (MATIC). The project is intended to support works of Asian countries on the information society, and enhance levels of the manufacturing industries and supportive industries by utilizing the information technologies. The working group (WG)I, related to automobiles and components thereof, improved functions of the primary system and continued demonstration tests. The group launched for the secondary system a system development that makes timely information transmission and receipt possible among research and development enterprises, local assembly enterprises and facility and parts suppliers. The WGII (household appliances and their parts) designed and developed an electronic catalog system based on pre-prototypes developed independently by different countries, and performed demonstration tests. The WGIII (textiles and apparels) carried out with China demonstration tests on the international EDI system, translation system and CAD/CAM system. It also developed a sewing technology standards system. It installed equipment and devices in Indonesia for preparation of the demonstration tests. (NEDO)

  20. Achievement report for fiscal 1998 on Simple Operation Type CAD/CAM System Development through International Cooperation; 1998 nendo 'kan'i sosagata denshi sekkei seian shien system no kaihatsu ni kansru kenkyu kyoryoku' ni kansuru hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The subject project is implemented in the fields of automobiles and their parts, electrical home appliances and their parts, and textile and apparel. In the field of automobiles and their parts, a prototype is developed of an integrated information management system which is to serve between corporation head offices and assembling businesses overseas, and another prototype is developed of an inter-business technical data serving system which is to serve between overseas assembling businesses and supporting businesses, both involving Japan, Indonesia, and Thailand. In the field of electrical home appliances and their parts, a prototype is developed of an electronic catalog system in a joint endeavor with research institutes of Indonesia, Malaysia, Singapore, and Thailand, and a demonstration test is conducted. A design concurrent engineering system is developed by Japan and Malaysian research institutes. In the field of textile and apparel, prototypes are developed, by Japanese, Chinese, and Indonesian apparel manufactures, of an apparel manufacturing specification system, international EDI (electronic data interchange) system, translation system, and a CAD (computer-aided design)/CAM (computer-aided manufacturing) data interchange system. (NEDO)

  1. Report on simple operation type CAD/CAM system development through international cooperation. Current statuses of Asian countries; 'Kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Asia shokoku no jokyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-03-01

    Information systems, mainly aided by computers, are becoming increasingly important, contributing to development of wide areas of societies and economics, to begin with. However, few developing countries have established sufficient information systems, in spite of their strong desires to do so, which will further widen the gap between them and advanced countries, where these systems are acceleratedly advancing. Given these situations, Center of International Cooperation for Computerization (CICC) has been implementing various projects for providing assistance to and cooperation with oversea countries which are trying to develop information systems. This report summarizes the project, which CICC has been commissioned by NEDO as part of the cooperation programs, for manufacturing technology supported by advanced and integrated information system through international cooperation. It outlines the research cooperation memoranda NEDO has concluded with Indonesia, Malaysia, Singapore and Thailand, and the authorities of China, Indonesia, Malaysia, Singapore and Thailand. (NEDO)

  2. Report for fiscal 1995 on simple operation type CAD/CAM system development through international cooperation. Research results; 1995 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kenkyu seika

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    This 5-year project beginning in FY 1994 is aimed at joint researches with various Asian countries for development of simply operable electronic designs and manufacturing support systems, which supports development of supporting industries (SI) for manufacturing industries in these countries. The project is being implemented in a total of 5 countries, China, Indonesia, Malaysia, Singapore and Thailand, in cooperation with the research institutes with which NEDO has concluded the basic contracts. The following three working groups are established to study construction of the model systems and design these systems for promotion of the joint project in each country; (1) automobiles and their parts, (2) home electric/electronic appliances, and their parts, and (3) textiles and apparels. The FY 1995 project results are described. The working group (1) covers definitions of the business models and conditions for systematizing these models for the demonstration tests. The working group (2) covers development of the electronic catalogues, electronic yellow pages/preproto types, and concurrent engineering. The working group (3) covers the SGML sewing technique specification systems, surveys and utilization tests for network infrastructures, international EDI systems for the textile industry, and translation systems for technical terms of the textile industry. (NEDO)

  3. Report for fiscal 1995 on simple operation type CAD/CAM system development through international cooperation. Cooperation for joint researches; 1995 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kyodo kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Reported herein are the joint research results of the project (manufacturing technology supported by advanced and integrated information system through international cooperation (MATIC)), implemented in China, Indonesia, Malaysia, Singapore and Thailand by Center of International Cooperation for Computerization, commissioned by NEDO. Japan invited researchers from each country to explain the research themes, and discussed construction of the systems in each country. Japanese experts visited the research institutes and cooperative works in these countries, to discuss the research cooperation themes, and survey the conditions and technical levels of these research institutes, and information infrastructures. The oversea researchers were invited to Japan for the MATIC international seminar, discussions for research cooperation themes, and MATIC cooperation promotion committee. Textile and apparel researchers were also invited from China. Japanese experts visited China, Indonesia, Malaysia, Singapore and Thailand for the on-the-spot surveys for each working group. (NEDO)

  4. Fiscal 1998 report on the research cooperation on development of the easy-to-operate electronic design and production support system (Joint research cooperation); 1998 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho (kyodo kenkyu kyoryoku)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Asian countries are constructing information infrastructures actively in spite of severe financial and economic conditions in every country. For promoting advanced manufacturing industries and supporting industries of Asian countries by information technology, the research cooperation promotion project (MATIC) on the electronic design and production support system has been carried out as the joint research project of Japan, China, Indonesia, Malaysia, Singapore and Thailand. This project started as the 5-year project in 1994, and has developed and demonstrated the prototype electronic design and production support system in 3 fields of automobile, home appliance and fiber/apparel. In the final 1998, the R and D and demonstration test were carried out, and the project results were summarized. For discussing the research cooperation concretely with overseas countries, the overseas researchers were invited to Japan for explaining the research state in Japan, confirming the promotion states of each country, and discussing the research report, while Japanese researchers visited the concerned organizations in every country. (NEDO)

  5. Report for fiscal 1995 on simple operation type CAD/CAM system development through international cooperation. Cooperation for joint researches; 1995 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kyodo kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Reported herein are the joint research results of the project (manufacturing technology supported by advanced and integrated information system through international cooperation (MATIC)), implemented in China, Indonesia, Malaysia, Singapore and Thailand by Center of International Cooperation for Computerization, commissioned by NEDO. Japan invited researchers from each country to explain the research themes, and discussed construction of the systems in each country. Japanese experts visited the research institutes and cooperative works in these countries, to discuss the research cooperation themes, and survey the conditions and technical levels of these research institutes, and information infrastructures. The oversea researchers were invited to Japan for the MATIC international seminar, discussions for research cooperation themes, and MATIC cooperation promotion committee. Textile and apparel researchers were also invited from China. Japanese experts visited China, Indonesia, Malaysia, Singapore and Thailand for the on-the-spot surveys for each working group. (NEDO)

  6. Fiscal 1998 report on the research cooperation on development of the easy-to-operate electronic design and production support system (Joint research cooperation); 1998 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho (kyodo kenkyu kyoryoku)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Asian countries are constructing information infrastructures actively in spite of severe financial and economic conditions in every country. For promoting advanced manufacturing industries and supporting industries of Asian countries by information technology, the research cooperation promotion project (MATIC) on the electronic design and production support system has been carried out as the joint research project of Japan, China, Indonesia, Malaysia, Singapore and Thailand. This project started as the 5-year project in 1994, and has developed and demonstrated the prototype electronic design and production support system in 3 fields of automobile, home appliance and fiber/apparel. In the final 1998, the R and D and demonstration test were carried out, and the project results were summarized. For discussing the research cooperation concretely with overseas countries, the overseas researchers were invited to Japan for explaining the research state in Japan, confirming the promotion states of each country, and discussing the research report, while Japanese researchers visited the concerned organizations in every country. (NEDO)

  7. Report for fiscal 1995 on simple operation type CAD/CAM system development through international cooperation. Committee activity record; 1995 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Iinkai katsudo kiroku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    This paper reports the committee activities in fiscal 1995 on research cooperation for developing an electronics design and production aid system of simple operation type (MATIC). This fiscal year has decided the directionality of MATIC promotion by activities carried out by the different committees. These activities relate to research and development themes, the basic policies of the research and development along with the themes, research and development themes linked with overseas countries, and promotion methods. The working group (WG)I has discussed and deliberated specific research and development items to promote research and development of automobiles and components thereof as the promotion theme, promotion of the research and development, and technical problems. The committee consists of researchers at the related corporations participated in MATIC. The WGII has taken up household appliances and parts thereof, and the WGIII textiles and apparels as the research and development themes, and given specific discussions for promoting the research and development. The paper also reports the activities taken by different committees for promotion of the production-based futuristic type integrated information system, and promotion of the MATIC technologies, operation and cooperation. (NEDO)

  8. Report on research cooperation for developing a simple operation type electronics design and production supporting system in fiscal 1998 (committee activity report); 1998 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Iinkai katsudo kiroku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Research cooperation is being promoted on a simple operation type electronics design and production supporting information system to assist the information using efforts in Asian countries. The cooperation is made jointly with five countries, namely, China, Indonesia, Malaysia, Singapore and Thailand. Fiscal 1998, falling under the final fiscal year, summarized the achievements and the committee activities. In order to promote research and development of automobiles and the components thereof, the WG-I, composed of committee members having professional knowledge, has deliberated specific research and development items, promotion of the research and development, technical problems, and promotion of joint research and development with other countries. The WG-II has made similar discussions on household electric appliances and the components thereof. The MATIC technical committee is composed of chiefs of the working groups and the responsible persons for system development. The committee discussed technical problems common to the working groups in promoting the projects, and made deliberations and adjustments on methods for promoting the research cooperation among the overseas countries. The cooperation promoting committee is composed of Japanese researchers and representatives of research institutes in other countries, and discussed how to move forward and adjust the research cooperation themes. (NEDO)

  9. Report for fiscal 1997 on simple operation type CAD/CAM system development through international cooperation. Committee activity record; 1997 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Iinkai katsudo kiroku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This paper reports the research and development project for an electronics design and production aid system of simple operation type. The project (MATIC) has been executed to support works of Asian countries on the information society, and enhance levels of the manufacturing industries and supportive industries by utilizing the information technologies. Fiscal 1997 has entered full-fledged demonstration experiments, and decided the project directionality as a result of different committee activities as to policies, contents and promotion methods for research, development and demonstration experiments. The working group (WG) 1, composed of members having professional knowledge on automobiles and components thereof, has deliberated specific research and development items, promotion of the research and development, technical problems, promotion of joint researches with overseas countries. The WG II, composed of members having professional knowledge on household electric appliances and their parts, discussed promotion of research and development of household electric appliances and their parts. The WG III, composed of textile and apparel expertise members, made attempts in promoting the research and development of household electrid appliances and their parts. This paper describes other committee activities including promotion of operation and cooperation on production-based futuristic type integrated information system and MATIC technologies. (NEDO)

  10. Report for fiscal 1995 on simple operation type CAD/CAM system development through international cooperation. Committee activity record; 1995 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Iinkai katsudo kiroku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    This paper reports the committee activities in fiscal 1995 on research cooperation for developing an electronics design and production aid system of simple operation type (MATIC). This fiscal year has decided the directionality of MATIC promotion by activities carried out by the different committees. These activities relate to research and development themes, the basic policies of the research and development along with the themes, research and development themes linked with overseas countries, and promotion methods. The working group (WG)I has discussed and deliberated specific research and development items to promote research and development of automobiles and components thereof as the promotion theme, promotion of the research and development, and technical problems. The committee consists of researchers at the related corporations participated in MATIC. The WGII has taken up household appliances and parts thereof, and the WGIII textiles and apparels as the research and development themes, and given specific discussions for promoting the research and development. The paper also reports the activities taken by different committees for promotion of the production-based futuristic type integrated information system, and promotion of the MATIC technologies, operation and cooperation. (NEDO)

  11. Report for fiscal 1997 on simple operation type CAD/CAM system development through international cooperation. Committee activity record; 1997 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Iinkai katsudo kiroku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This paper reports the research and development project for an electronics design and production aid system of simple operation type. The project (MATIC) has been executed to support works of Asian countries on the information society, and enhance levels of the manufacturing industries and supportive industries by utilizing the information technologies. Fiscal 1997 has entered full-fledged demonstration experiments, and decided the project directionality as a result of different committee activities as to policies, contents and promotion methods for research, development and demonstration experiments. The working group (WG) 1, composed of members having professional knowledge on automobiles and components thereof, has deliberated specific research and development items, promotion of the research and development, technical problems, promotion of joint researches with overseas countries. The WG II, composed of members having professional knowledge on household electric appliances and their parts, discussed promotion of research and development of household electric appliances and their parts. The WG III, composed of textile and apparel expertise members, made attempts in promoting the research and development of household electrid appliances and their parts. This paper describes other committee activities including promotion of operation and cooperation on production-based futuristic type integrated information system and MATIC technologies. (NEDO)

  12. Report on research cooperation for developing a simple operation type electronics design and production supporting system in fiscal 1998 (committee activity report); 1998 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Iinkai katsudo kiroku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Research cooperation is being promoted on a simple operation type electronics design and production supporting information system to assist the information using efforts in Asian countries. The cooperation is made jointly with five countries, namely, China, Indonesia, Malaysia, Singapore and Thailand. Fiscal 1998, falling under the final fiscal year, summarized the achievements and the committee activities. In order to promote research and development of automobiles and the components thereof, the WG-I, composed of committee members having professional knowledge, has deliberated specific research and development items, promotion of the research and development, technical problems, and promotion of joint research and development with other countries. The WG-II has made similar discussions on household electric appliances and the components thereof. The MATIC technical committee is composed of chiefs of the working groups and the responsible persons for system development. The committee discussed technical problems common to the working groups in promoting the projects, and made deliberations and adjustments on methods for promoting the research cooperation among the overseas countries. The cooperation promoting committee is composed of Japanese researchers and representatives of research institutes in other countries, and discussed how to move forward and adjust the research cooperation themes. (NEDO)

  13. Report for fiscal 1998 on Simple Operation Type CAD/CAM System Development through International Cooperation. Report on the achievements of counterparts overseas; 1998 nendo 'kan'i sosagata denshi sekkei seian shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kaigai counter part seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Concerning the subject matter, achievements of China, Indonesia, Malaysia, Singapore, and Thailand are reported. In China, a technical data transfer process is under development, designed to serve between CAD (computer-aided design)/CAM (computer-aided manufacturing) packages of different file formats. In Indonesia, WG1 activities are being conducted with the assistance of Toyota Motor Corporation, and WG3 activities with the assistance of Wacoal Corporation, Japan. In Malaysia, designing, development, and tests are under way for prototype systems of an electronic catalog, direct link to CAD/CAM, transfer and sharing of electronic manufacturing data, etc., all to be completed by March 1999. In Singapore, an electronic parts library is compiled, and a verification test is conducted involving response time, download time, etc. In Thailand, development is under way of an engineering browser, automobile industry-oriented WEB-based information center, etc. (NEDO)

  14. Report for fiscal 1998 on Simple Operation Type CAD/CAM System Development through International Cooperation. Report on the achievements of counterparts overseas; 1998 nendo 'kan'i sosagata denshi sekkei seian shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kaigai counter part seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Concerning the subject matter, achievements of China, Indonesia, Malaysia, Singapore, and Thailand are reported. In China, a technical data transfer process is under development, designed to serve between CAD (computer-aided design)/CAM (computer-aided manufacturing) packages of different file formats. In Indonesia, WG1 activities are being conducted with the assistance of Toyota Motor Corporation, and WG3 activities with the assistance of Wacoal Corporation, Japan. In Malaysia, designing, development, and tests are under way for prototype systems of an electronic catalog, direct link to CAD/CAM, transfer and sharing of electronic manufacturing data, etc., all to be completed by March 1999. In Singapore, an electronic parts library is compiled, and a verification test is conducted involving response time, download time, etc. In Thailand, development is under way of an engineering browser, automobile industry-oriented WEB-based information center, etc. (NEDO)

  15. Report for fiscal 1997 on simple operation type CAD/CAM system development through international cooperation. Joint research cooperation; 1997 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kyodo kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This report describes Japan's joint researches with China, Indonesia, Malaysia, Singapore, and Thailand under the above-named project (MATIC) which were carried out in fiscal 1997. Scientists are invited to Japan from the above-named countries, to whom Japan's status of researches is explained and with whom discussion is conducted about progress in general and system development in those countries, and about verification tests. Japanese scientists visit research institutes of those countries so as to appraise the progress of researches and technological levels and to install computers for verification tests. Scientists visiting this country upon Japan's invitation and workshop held in Japan are enumerated below. Accepted by Working Group I (automobile and parts) are scientists from Indonesia and China and workshops from two countries; accepted by Working Group II (electrical home appliance) are scientists from Malaysia and workshops from five countries and then from four countries; and accepted by Working Group III (fiber and apparel) are scientists from China. Visits are made by the Working Groups to Thailand, Indonesia, Malaysia, Singapore, and China. (NEDO)

  16. Report for fiscal 1997 on simple operation type CAD/CAM system development through international cooperation. Joint research cooperation; 1997 nendo 'kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku' ni kansuru hokokusho. Kyodo kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This report describes Japan's joint researches with China, Indonesia, Malaysia, Singapore, and Thailand under the above-named project (MATIC) which were carried out in fiscal 1997. Scientists are invited to Japan from the above-named countries, to whom Japan's status of researches is explained and with whom discussion is conducted about progress in general and system development in those countries, and about verification tests. Japanese scientists visit research institutes of those countries so as to appraise the progress of researches and technological levels and to install computers for verification tests. Scientists visiting this country upon Japan's invitation and workshop held in Japan are enumerated below. Accepted by Working Group I (automobile and parts) are scientists from Indonesia and China and workshops from two countries; accepted by Working Group II (electrical home appliance) are scientists from Malaysia and workshops from five countries and then from four countries; and accepted by Working Group III (fiber and apparel) are scientists from China. Visits are made by the Working Groups to Thailand, Indonesia, Malaysia, Singapore, and China. (NEDO)

  17. Report on the FY 1999 research cooperation follow-up project on the development of manufacturing technology supported by advanced and integrated information system through cooperation; 1999 nendo kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku follow up jigyo hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    In FY 1999, the follow-up project was conducted on the development of manufacturing technology supported by advanced and integrated information system through cooperation (MATIC). The project included the grasp of the state of activity, announcement of the achievement, field survey, etc. of China, Indonesia, Malaysia, Singapore and Thailand. China carried out the system development and demonstrative tests in the fiber/apparel field, trying to spread the MATIC system. Indonesia is planning to spread the use of electronic catalog of automotive parts/electronic parts toward small/medium companies through internet. Malaysia was in charge of the development in the field of home electric appliances and demonstrative tests. They use the results so as to meet the demand in the domestic industry, aiming at spreading it in the country. Singapore uses the electronic catalog system to make it apply to the informatization project of the country. Thailand is making efforts for the spread of the MATIC results through the prototype model. (NEDO)

  18. FY 2000 report on the research cooperation project on the research cooperative follow-up for development of the manufacturing technology supported by advanced and integrated information system through cooperation; 2000 nendo kenkyu kyoryoku jigyo. 2000 nendo kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku follow up jigyo hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    The manufacturing technology supported by advanced and integrated information system through cooperation (MATIC), that is, a project supporting the production technology including the international information system and CAD/CAM system, etc. was carried out from FY 1994 to FY 1998. From FY 1999, the follow-up project is being implemented for the spread of the MATIC results, support for the independent R and D and the technical guidance. China, Indonesia, Malaysia and Singapore participated in this project, by which the support and technical guidance were given in three fields: automobiles/the parts; household electric appliances/the parts; fiber/apparel. At present, each country is continuing its own activity for using the system developed in the MATIC project in its country. In this fiscal year, researchers were sent to each country for supporting the activities. Further, the MATIC follow-up committee was established to conduct the drawing-up of a business plan, grasp of the state of the spread/R and D, discussion about problems/subjects, comprehensive evaluation of the MATIC project, etc. (NEDO)

  19. FY 2000 report on the research cooperation project on the research cooperative follow-up for development of the manufacturing technology supported by advanced and integrated information system through cooperation; 2000 nendo kenkyu kyoryoku jigyo. 2000 nendo kan'i sosagata denshi sekkei seisan shien system no kaihatsu ni kansuru kenkyu kyoryoku follow up jigyo hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    The manufacturing technology supported by advanced and integrated information system through cooperation (MATIC), that is, a project supporting the production technology including the international information system and CAD/CAM system, etc. was carried out from FY 1994 to FY 1998. From FY 1999, the follow-up project is being implemented for the spread of the MATIC results, support for the independent R and D and the technical guidance. China, Indonesia, Malaysia and Singapore participated in this project, by which the support and technical guidance were given in three fields: automobiles/the parts; household electric appliances/the parts; fiber/apparel. At present, each country is continuing its own activity for using the system developed in the MATIC project in its country. In this fiscal year, researchers were sent to each country for supporting the activities. Further, the MATIC follow-up committee was established to conduct the drawing-up of a business plan, grasp of the state of the spread/R and D, discussion about problems/subjects, comprehensive evaluation of the MATIC project, etc. (NEDO)

  20. Report on investigations in fiscal 2000 on the projects to support introduction of environment friendly coal utilization system. Green helmet project for briquette production plant - Mae Moh coal mine, Thailand; 2000 nendo kankyo chowagata sekitan riyo system donyu shien jigyo chosa hokokusho. Briquette seizo setsubi ni kakawaru green helmet jigyo (Thai koku Mae Moh tanko)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-06-01

    This Green Helmet Project is intended to suppress generation of environment polluting substances in association with coal utilization in Thailand by demonstrating and improving the proliferation infrastructure for the clean coal technology to be used widely in Thailand. The project is also intended to serve for stabilized assurance of energies for Japan. The demonstration project related to briquette manufacturing facilities executed as one of the 'Projects to support introduction of environment friendly coal utilization system' is intended to manufacture at low cost a briquette which is low in odor, free of smoke, and suppressed largely of sulfur oxide generation. The briquette is made by adding clayish minerals, sulfur, a fixing agent and a binder into brown coal being a low grade coal. The project implements proliferation of the technology to reduce environmental load associated with coal utilization in developing countries according to the situation and needs of the counterpart countries. The present project has performed the site surveys and guidance of operation and maintenance techniques as follow-up works of the demonstration project having been completed by cooperation between Japan and Thailand. It is considered that what had been intended in the beginning has been achieved sufficiently. (NEDO)

  1. Research report of FY 1997 on the environmentally acceptable coal utilization system introduction support project. Demonstration project of circulating fluidized bed boiler (Jinzhou Coal-Thermal Power Corporation); 1997 nendo seika hokokusho (kankyo chowagata sekitan riyo system donyu shien jigyo). Junkan ryudosho boiler ni kakawaru jissho jigyo (Jinzhou netsuden sokoji)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    To verify the clean coal technology to be diffused in China and consolidate its diffusion basis, demonstration project of circulating fluidized bed boiler was conducted through the cooperation with China which is positive in its introduction. This report describes its characteristics. Coal and limestone are supplied in a lower part of combustion chamber, and are mixed with circulating ash by fluidized air for combustion. Densely fluidized bed the same as the bubbling fluidized bed is formed in the lower part of combustion chamber, which provides excellent stability in ignition and combustion. Particles including ash, char and limestone formed during the combustion are discharged into the cyclone through the convection heat transfer part at the outlet of combustion chamber with the combustion gas flow. Since the gas temperature is lowered to 400 to 500degC at the convection heat transfer part, troubles of the ash circulating system can be prevented. The combustion gas separated from ash at the cyclone is discharged through the heat exchanger and precipitator, and the collected ash is returned to the lower part of combustion chamber. In FY 1997, design, fabrication, procurement/inspection, field survey/meeting, survey of visitors/meeting, and education were carried out. 4 figs., 4 tabs.

  2. Achievement report for fiscal 1998. Home rehabilitation system for aphasia patients; 1998 nendo seika hokokusho. Shitsugosho zaitaku rehabilitation shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-05-01

    Development has been made on the element technologies for a home rehabilitation system for aphasia patients. First, studies were performed on an authoring procedure for aphasia patient training, and partial trial production and development were carried out on an authoring system for the training program formula. Then, studies were executed on a training simulation and analysis filter, and partial trial production and development were implemented on a home rehabilitation supporting and self-teaching system. Next, an input and output mechanism for voice signal processing was studied, and aphasia patient and caregiver human interface was partially fabricated on a trial basis. In addition, a remote rehabilitation communicating method was researched, and partial trial production was carried out on a remote rehabilitation evaluation and diagnosis support means. Finally, communication assisting means were researched, and a communication assisting system was partially produced on a trial basis. Good evaluation results were given on a demonstration system. Although partial indications were given on minute parts, practical agreement was obtained as a whole. Great expectation was given particularly on the remote rehabilitation system and the authoring system. (NEDO)

  3. Optimum design of automobile seat using statistical design support system; Tokeiteki sekkei shien system no jidoshayo seat eno tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Kashiwamura, T [NHK Spring Co. Ltd., Yokohama (Japan); Shiratori, M; Yu, Q; Koda, I [Yokohama National University, Yokohama (Japan)

    1997-10-01

    The authors proposed a new practical optimum design method called statistical design support system, which consists of five steps: the effectivity analysis, reanalysis, evaluation of dispersion, the optimiza4ion and evaluation of structural reliability. In this study, the authors applied the present system to analyze and optimum design of an automobile seat frame subjected to crushing. This study should that the present method could be applied to the complex nonlinear problems such as large deformation, material nonlinearity as well as impact problem. It was shown that the optimum design of the seat frame has been solved easily using the present system. 6 refs., 5 figs., 5 tabs.

  4. Charcterized surpervisory control system for elevators and its support equipment. Elevator koseika gun kanri system to sono shien sochi

    Energy Technology Data Exchange (ETDEWEB)

    Tobita, T.; Fujino, A.; Yoneda, K.; Ueshima, T. (Hitachi Ltd., Tokyo (Japan))

    1991-12-20

    Objective of elevators plural control system for performing the operation control of multiple elevators is to improve the service to users. The service improvement toward a conventional plural control system is mainly to reduce waiting time on the riding floor from the calling button being pushed till elevator reaching the riding floor. Subsidiary to it, merely energy-saving is carried out. In the present study, a characterized supervisory control system was developed to make plural supervisory control receiving the requests from users to reduce not only the usual waiting time but also riding time and congestion inside. In order to meet the requests of users, a characterized support equipment was produced dialogically by combining fuzzy ratiocination, production system as well as simulation. The effects thereof were confirmed. 12 refs., ll figs., 2 tabs.

  5. Pipeline control support system, 'pipe navigation'; Kanro kanri shien system 'kannabi'

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-01-10

    'Pipe navigation' is a pipeline control support system which employs GIS/GPS (geographic information system/global positioning system) technology in controlling information of water pipeline and incidental facilities, using a pen note/personal computer as the operating base. These pen computers can be carried to the spot and used in displaying pipeline/incidental equipment and retrieving related information. The main features as follows:(1) Memo preparation is possible at an arbitrary place with handwriting ease. The memo data so prepared can be taken in other terminals and shared.(2) Communication with remote places is possible by transmitting drawings, prepared memo data, etc., as in facsimile (3) Confirmation of the present position and navigation are possible (GPS function), demonstrating power in a restoration work at the time of earthquake for example.(4) Inputting and maintenance of each facility information are possible through the data input support function even by general users easily. (translated by NEDO)

  6. Gd-Ni-Si system

    International Nuclear Information System (INIS)

    Bodak, O.I.; Shvets, A.F.

    1983-01-01

    By X-ray phase analysis method isothermal cross section of phase diagram of the Gd-Ni-Si system at 870 K is studied. The existence of nine previously known compounds (GdNisub(6.72)Sisub(6.28), GdNi 10 Si 2 , GdNi 5 Si 3 , GdNi 4 Si, GdNi 2 Si 2 , GdNiSi 3 , GdNiSi 2 , Gd 3 Ni 6 Si 2 and GdNiSi) is confirmed and three new compounds (GdNisub(0.2)Sisub(1.8), Gdsub(2)Nisub(1-0.8)Sisub(1-1.2), Gd 5 NiSi 4 ) are found. On the base of Gd 2 Si 3 compound up to 0.15 at. Ni fractions, an interstitial solid solution is formed up to 0.25 at Ni fractions dissolution continues of substitution type. The Gd-Ni-Si system is similar to the Y-Ni-Si system

  7. Report for fiscal 2001 investigations on energy saving assistance institutions in different countries; 2001 nendo kakkoku no sho energy shien seido ni kansuru chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Taking up China, India, Indonesia and Thailand as the object, investigations were performed on political financing measures that can be used for installing energy saving facilities, and on applicable preferential taxation systems that are applied in each country. Indonesia has no aid measures such as subsidies and political financing directly purposed for energy conservation. Import duty exemption is applied for the purpose of promoting investments. Three kinds of funds are available through IFCT to implement fund aid to protect the environment. Energy saving fund has been established as an energy saving policy to provide subsidies. Energy saving machineries recognized by the investment committee are exempted from the import duties. India has no political financing measures directly purposed for energy conservation. Its preferential taxation system for energy conservation includes the 100% accelerated amortization system for energy saving machineries and facilities, and the preferential import duty system. In China, the financing from the China National Development Bank is considered utilizable in installing energy saving facilities. The country has no aid measures in the taxation system, but fund aid and subsidy by supplementing interest are provided. (NEDO)

  8. Report on survey in fiscal 2000 on the feasibility study on structuring research aiding net; 2000 nendo kenkyu shien net no kochiku ni kansuru kanosei chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    A study has been performed on the possibility of efficient utilization of research resources by summarizing the resource information for research and development by the industrial, governmental and academic areas and by providing research organizations with the information through the Internet. As a result of the survey on research aiding cases that apply the network used by the public organizations and corporations inside and outside the country, it was found that Japan often utilizes research facilities and holds seminars having selected regional research organizations, while the U.S. provides large-size aids in wide area, such as technological information service, patent service, and human resource service. A questionnaire survey was conducted on interests toward the necessity of research aids, specific needs for aids, and provided services. As a result, it was revealed that interest toward the research aiding net is considerably high, and strong demands are present in structuring database for the research human resource information, needs information, and information on researchers in different fields. Discussions were given on structuring the research aiding net, wherein the system contents, structuring expense, and the development schedule were presented. (NEDO)

  9. Study of human interface for narrow road drive assist system considered characteristic of driver; Driver no tokusei wo koryoshita kyoro soko shien system no human interface no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Ikeda, A [Subaru Research Center Co., Tokyo (Japan); Amada, N; Kawashima, H [Keio University, Tokyo (Japan)

    1997-10-01

    The measurement of driver`s watching point, driving time on narrow road and the evaluation of stress etc. were conducted in order to construct the narrow road drive assist system using the stereo image recognition system. Consequently, the driver`s thinking process, stress factor and the indispensable information for this system were clarified. 4 refs., 8 figs., 3 tabs.

  10. Development of research activity supporting system. 2. Evaluation of desktop video conferencing; Kenkyu katsudo shien system no kaihatsu. 2. Enkaku kijo uchiawase hoshiki no jitsuyosei hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Tsutsumi, F.; Hishitani, J.; Matsui, S. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1996-03-01

    Desktop video conferencing (DVC) system and its software were investigated. A test system was actually constructed. Based on the test results, its practical advantage and disadvantage were illustrated. The DVC system was constructed using general LAN, and operation experiments were conducted, as to research activity. From the interview with participants and analysis of conversation history, advantage and disadvantage of this system were clarified. Performance of the trial system was examined using practical LAN, to compare with the performance of commercial systems. When using LAN, the same problems were given. It was found that the DVC system can not substitute for the conventional real face to face meeting, but it is suitable for some communication styles, for example free participation meeting or collaboration based on the same objective, which has been hard up to this time. In addition, software was made as trial, by which reservation of meeting, announcement, and calling can be carried out. 26 refs., 6 figs., 5 tabs.

  11. Achievement report on research and development of medical and welfare equipment technology. Lavatory training system; Iryo fukushi kiki gijutsu kenkyu kaihatsu seika hokokusho. Haisetsu jiritsu shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-11-01

    Research and development of a lavatory training system is carried out to enable bed-ridden aged people to evacuate unaided and thereby to elevate their consciousness of self-reliance. The developed system consists of a multi-functional bed with a built-in transfer unit and a movement assisting system. The multi-functional bed consists of a device that automatically transfers the patient abed to a position on the bedside portable toilet, a device that is remotely controlled to change the posture of the patient from the in-bed state to a seated state, and an audio-visual system that encourages the patient into self-reliance. The movement assisting system enables a patient, who needs people's help in rising from the bed and in walking to the lavatory, to stand up, sit down, and walk, all unaided. The system has undergone field tests at 6 locations in hospitals, public facilities, and residential houses. The result is that for people of Category III it is almost certain that they can travel safely thanks to the system. The system is again evaluated high in barrier-free residential environments. (NEDO)

  12. Practical application of a field work information support system for one-stop service; One stoop service wo mezashita genchi sagyo joho shien system no jitsuyoka kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Ishikawa, M. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1998-04-10

    This paper reports the current research result of the field work information support system in a one-stop service system. The work arrangement in the branch office of an electric company is how to assign the service operator efficiently and accurately for the transfer to the customer. This problem is grasped as a traveling salesman problem (TSP) of `make the round of `n` works by `m` persons for processing and return to the branch office with the branch office as a start point`. The system in which the day`s schedule of each operator can be automatically created by entering only the work schedule (including limitation conditions (difficulty degree of work contents or time appointment) and skill management information of each work) was investigated. The compatibility and evaluation of each traveling route search method were carried out. As a result, the genetic algorithm is judged to be fully practical. The communication information for field work could be retrieved in real time using PHS. This system can also be applied to the maintenance or consulting including a disaster or accident as well as general work. 4 figs., 1 tab.

  13. Robot and mechatronics equipment for daily life support in high-elderly and small number of child society; Chokorei/shosika shakai seikatsu ni shien shitekureru robot/mekatoro kiki

    Energy Technology Data Exchange (ETDEWEB)

    Fujie, M. [Hitachi Ltd., Tokyo (Japan)

    1997-07-05

    As for high-elderly society, Japan is going to face in near future, self dependency without depending on others as far as possible of bed ridden people or people using wheel chair and also including the probable elderly ones is going to be necessary. In Japan, there is so far accumulation of high level mechatronics technology and it is thought that there is possible to develop a system to fulfill such needs. In this system, equipment has deep connection with human being and natural coexistence between the equipment and human being is most necessary. Accordingly, development and practical use of walking practicing machine used for elderly people, walking support system, daily life work support system and so forth are expected by making successful in practice the coexistence functions of high level robot/mechatronics technology and machine/man. However, the study regarding the technology that are common to man and machine, particularly, research of mental characteristics and physical characteristics of human being is still insufficient and further results are expected. 9 refs., 12 figs.

  14. Discriminations of critical conditions of a high speed ship in quarterings sea waves by using tools of the sea state determinations by GMS. Eisei joho kaisho settei shien tool ni motozuku chokosokusen no shatsuiha rinkai jotai no hanmei

    Energy Technology Data Exchange (ETDEWEB)

    Yamaguchi, S.; +Ishida, T. (Kyushu University, Fukuoka (Japan)); Shinkai, A. (Kyushu University, Fukuoka (Japan). Faculty of Engineering)

    1991-09-04

    The documentation assumes a new type high speed ship, higher than 50kt in speed and heavier than 1000ton in dead weight, to require the ocean goingness, middle distance navigation and high speed transport. The present report dealed with how to discriminate a ship, navigating at a high speed on oceanic waves, in critical condition against the encountering waves. Navigating far distantly from the shore, the ship was generally made to positively utilize the information data from the geostationary metheorological satellite (GMS) to be applied as a support soft tool for the maritime system and other designs. As a result, the high speed ship on the quartering waves was numerically elucidated in critical condition against the encountering waves and simultaneously assumed in critical course upon discriminating the critical condition in a concretely designated oceanic area. It was shown that, if different Froude numbers are calculated and ordered of critical circular frequency, angle, wave period, etc. against the encountering, a dimensionally arbitrary ship is easily discriminatable in critical course in an arbitrary oceanic area by utilizing a GMS determination support tool. 12 refs., 14 figs., 2 tabs.

  15. Fe-Cr-Ni system alloys

    International Nuclear Information System (INIS)

    Levin, F.L.

    1986-01-01

    Phase diagram of Fe-Cr-Ni system, which is the basic one for production of corrosion resistant alloys, is considered. Data on corrosion resistance of such alloys are correlated depending on a number of factors: quality and composition of modifying elements, corrosion medium, temperature, alloy structure, mechanical and thermal treatment. Grades of Fe-Ni-Cr alloys are presented, and fields of their application are pointed out

  16. Mechanical alloying of the FeNi-Ag system

    International Nuclear Information System (INIS)

    Gonzalez, G.; Ibarra, D.; Ochoa, J.; Villalba, R.; Sagarzazu, A.

    2007-01-01

    The Fe-Ni-Ag system is of particular interest for its potential applications as soft magnetic granular material with small magnetic grains embedded in a non-magnetic metal matrix. Under equilibrium conditions: Fe-Ag and Ni-Ag are immiscible and Fe-Ni shows complete solubility. These materials are particularly important for magnetoresistivity properties. The properties of these alloys are closely related to their microstructure; therefore, a detailed study of the transformations occurring during milling was undertaken using pre-alloyed Fe x Ni 100-x (x = 30, 50 and 70) further milled with different Ag content to give the following alloys compositions (Fe x -Ni 100-x ) 100-y Ag y (y = 5, 20, 60). Consolidation of the mechanically alloyed powders by sintering at 950 o C was performed. Morphological and structural characterization of the sintered powders was carried out by scanning and transmission electron microscopy and X-ray diffraction. Fe 30 Ni 70 and Fe 50 Ni 50 formed ordered FeNi 3 compound. Fe 70 Ni 30 showed the formation of a mixture of γ-(Fe,Ni) and α-Fe(Ni) solid solutions. The mixture of these systems with Ag showed the metal solid solutions surrounded by Ag islands of Fe x Ni y -Ag, There was also evidence of Ag diffusing into the γ-(Fe,Ni). High Ag content (60%) shows formation of islands of FeNi surrounded by Ag. Sintering is always improved with the Ag content

  17. Phase transitions in alloys of the Ni-Mo system

    International Nuclear Information System (INIS)

    Ustinovshikov, Y.; Shabanova, I.

    2011-01-01

    Graphical abstract: The structure of Ni-20 at.% Mo and Ni-25 at.% Mo alloys was studied by methods of TEM and XPS. It is shown that at high temperatures the tendency toward phase separation takes place in the alloys and crystalline bcc Mo particles precipitate in the liquid solution. At 900 deg. C and below, the tendency toward ordering leads to the dissolution of Mo particles and precipitation of the particles of Ni 3 Mo, Ni 2 Mo or Ni 4 Mo chemical compounds. Highlights: → 'Chemical' phase transition 'ordering-phase separation' is first discovered in alloys of the Ni-Mo system. → It is first shown that the phase separation in the alloys studied begins at temperatures above the liquidus one. → The formation of Ni 3 Mo from A1 has gone through the intervening stage of the Ni 4 Mo and Ni 2 Mo coexistence. - Abstract: The structure of Ni-20 at.% Mo and Ni-25 at.% Mo alloys heat treated at different temperatures was studied by the method of transmission electron microscopy. X-ray photoelectron spectroscopy was used to detect the sign of the chemical interaction between Ni and Mo atoms at different temperatures. It is shown that at high temperatures the tendency toward phase separation takes place. The system of additional reflections at positions {1 1/2 0} on the electron diffraction patterns testifies that the precipitation of crystalline bcc Mo particles begins in the liquid solution. At 900 deg. C and below, the tendency toward ordering leads to the precipitation of the particles of the chemical compounds. A body-centered tetragonal phase Ni 4 Mo (D1 a ) is formed in the Ni-20 at.% Mo alloy. In the Ni-25 at.% Mo alloy, the formation of the Ni 3 Mo (D0 22 ) chemical compound from the A1 solid solution has gone through the intervening stage of the Ni 4 Mo (D1 a ) and Ni 2 Mo (Pt 2 Mo) formation.

  18. Development of small-scale electroplating system for Ni-63 electroplating onto Ni foil

    International Nuclear Information System (INIS)

    Kim, Jin Joo; Choi, Sang Mu; Son, Kwang Jae; Hong, Jintae

    2016-01-01

    Betavoltaic battery is a device that converts the decay energy of beta-emitting radioisotopes into electric energy. Ni-63 is pure betaemitter with a low energy spectrum and significantly long half-life of 100.1 years and thus is widely used as the power source of betavoltaic battery. There are several methods for the formation of a Ni deposit onto a semiconductor such as electroplating, electroless plating, and chemical vapor deposition. In this study, small-scale radioisotope electroplating system was designed and fabricated to perform electroplating with a small amount of plating buffer and minimum exposure of radioactive materials. These procedures and the manufactured electroplating device can be applied to radioactive Ni-63 electroplating for the fabrication of a betavoltaic battery. In this study, an electroplating system for small-scale Ni electroplating was designed and manufactured. The process for the fabrication of a Ni-63 foil as the energy source of a betavoltaic battery was developed using the minimum concentration of Ni. These procedures and the manufactured electroplating device can be applied to radioactive Ni-63 electroplating for the fabrication of a betavoltaic battery

  19. Development of small-scale electroplating system for Ni-63 electroplating onto Ni foil

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jin Joo; Choi, Sang Mu; Son, Kwang Jae; Hong, Jintae [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2016-10-15

    Betavoltaic battery is a device that converts the decay energy of beta-emitting radioisotopes into electric energy. Ni-63 is pure betaemitter with a low energy spectrum and significantly long half-life of 100.1 years and thus is widely used as the power source of betavoltaic battery. There are several methods for the formation of a Ni deposit onto a semiconductor such as electroplating, electroless plating, and chemical vapor deposition. In this study, small-scale radioisotope electroplating system was designed and fabricated to perform electroplating with a small amount of plating buffer and minimum exposure of radioactive materials. These procedures and the manufactured electroplating device can be applied to radioactive Ni-63 electroplating for the fabrication of a betavoltaic battery. In this study, an electroplating system for small-scale Ni electroplating was designed and manufactured. The process for the fabrication of a Ni-63 foil as the energy source of a betavoltaic battery was developed using the minimum concentration of Ni. These procedures and the manufactured electroplating device can be applied to radioactive Ni-63 electroplating for the fabrication of a betavoltaic battery.

  20. Specified international joint research. Report for fiscal 1997 on the result of `Development of Machining Supporting System`; Kokusai tokutei kyodo kenkyu. `Kikai kako shien system no kaihatsu` 1997 nendo seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    On the basis of information obtained from actually performed designing of machines with the aid of computers, researches are conducted for the development of a system that automatically designs required machine tools, machining procedures, machining conditions, and tool paths. The research and development efforts made in fiscal 1997 are enumerated below. In the development of man-machine interfaces, one that integrates a machining procedure designing system, machining condition designing system, and a tool path designing system, all of which are subsystems belonging in a machining supporting system, is developed. In a system evaluation performed through actual machining, an interface between CAD (Computer-Aided Design) technology and a machining supporting system is evaluated, when machining is actually performed for experimentation in an environment in which a machining procedure designing system, machining condition designing system, tool path designing system, and CNC (Computerized Numerical Control) technology collaborate as integrated. As the result, the performance expected to be achieved at the beginning is realized. Two scientists of Russian Academy of Sciences are invited, and researches are conducted concerning knowledge processing technology. 20 refs., 21 figs., 10 tabs.

  1. Achievement report for fiscal 1999 on research and development of technologies for medical welfare equipment. Rehabilitation system for upper limbs and lower limbs; 1999 nendo iryo fukushi kiki gijutsu kenkyu kaihatsu seika hokokusho. Shintai kino rihabiri shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-05-01

    This project aims to develop physical function measuring and training systems equipped with a variety of feedback utilities and widely applicable to the prevention of the elderly from physical function degradation, to the preservation of physical functions, and to their recovery from mild physical difficulties, thereby helping the elderly enjoy independence and participation in social activities. Possibilities will be studied of providing them with engineering support in the field of exercise therapy through the analysis of the characteristics of old people's movement, and the findings will be applied to the designing and assessment of welfare and nursing equipment and also fed back to their development environment. In the gait training system, the suspension force is adjusted according to data from the force plate and various position sensors, and the system produces an effect similar to that of walking in the water. The lower limb rehabilitation system facilitates the treatment of the aged or handicapped people, and patients suffering from cerebral disorders, at any of their physical positions from lying to standing. The upper limb training support system is to provide motivation for the aged or handicapped people suffering from mild difficulties in their upper limbs. In this fiscal year, basic designs have been prepared for the gait training system and the lower limb rehabilitation system, and a preparatory survey is conducted for the upper limb training support system. (NEDO)

  2. Fiscal 2000 achievement report on the research and development of medical and welfare apparatus/technology. Home rehabilitation system for aphasia patients; 2000 nendo iryo fukushi kiki gijutsu kenkyu kaihatsu seika hokokusho. Shitsugosho zaitaku rehabilitation shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-05-01

    In the effort to develop an authoring system for assistance programs, a self-training system to enhance home rehabilitation, a remote rehabilitation evaluation/diagnosis supporting system, and a communication assisting system, the systems developed in the preceding fiscal years were customized and, together with their operation manuals, introduced to seven hospitals and subjected to evaluation. The results were analyzed, and improvement centering on the ease of operation was carried out. Various development efforts were exerted to improve on what were strongly demanded. As for the aphasiac/caregiver interface, it was distributed to every hospital concerned. There was a demand for immediate introduction, and then the interface was developed into a practical tool to satisfy the demand. This enabled aphasiac patients to receive training stimuli effectively through various sense organs. (NEDO)

  3. Achievement report for fiscal 1999 on research and development of technologies for medical welfare equipment. Home rehabilitation system for aphasia patients; 1999 nendo iryo fukushi kiki gijutsu kenkyu kaihatsu seika hokokusho. Shitsugosho zaitaku rehabilitation shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-05-01

    Element technologies under development involve (1) an authoring system for assistance program processing, (2) self-training system for supporting home rehabilitation, (3) human interface for aphasia patients and caregivers, (4) remote rehabilitation evaluation and diagnosis supporting system, and (5) a communication assisting system. Under item (1), a material incorporating interface, training contents layout and combination function, and general-purpose interface specifications are determined, and a one-piece system is designed and developed. Under item (2), a self-training player that behaves in compliance with the authoring specifications is designed and developed. Under item (3), a secondary unit is fabricated on the assumption of its use at an actual treatment scene. Under item (4), remotely controlled two-way face-to-face communication, camera control, shared operation of a training player, training scenario transfer component, etc., are developed and, furthermore, a one-piece system is designed and developed to support the therapist's rehabilitation assessment and diagnosis in coordination with the above-mentioned remotely controlled functions. Under item (5), a network communication component and an auxiliary function using voice synthesis are added for designing and developing a one-piece system that enables long-distance communication between the therapist and patients. (NEDO)

  4. Result of R and D of medical welfare equipment technology in fiscal 1994. Part 7. Evacuation-support system; Iryo fukushi kiki gijutsu kenkyu kaihatsu 1994 nendo seika hokokusho. 7. Haisetsu jiritsu shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-05-01

    The evacuation-support system is under development for not only the aged bedridden persons but also the persons disabled in exercising movement to excrete by themselves. When the person lying on his bed is going to excrete, his sequence of actions to be taken is to sit down on his bed, walk to the toilet, sit on it, simultaneously take off his clothes and excrete. After the excretion, the above actions are reversely taken as for as he lies on his bed. Researches are being made into the mechanical system which partially or entirely supports the above five necessary actions. The system structuring can depend upon the following five types of disabled persons` residual function: difficulty in sitting or moving without help. Paralyzed lower extremities and partially impaired upper extremities. Ability to walk with functional assistance. Ability to stand up with support but walk unstably. Ability to walk, leaning on and along the railing. In the present project, its three constituent elements are being developed which are the multi-functional bed internally equipped with transferring/riding/mounting apparatus, transfer support apparatus and multi-function portable toilet. The development of the present system is expected to be followed by that of the self-supporting excretion system which will be proper for Japanese houses. 3 figs., 1 tab.

  5. Achievement report for fiscal 1999 on research and development of technologies for medical welfare equipment. Computer-assisted analysis system for medicinal compounds; 1999 nendo iryo fukushi kiki gijutsu kenkyu kaihatsu seika hokokusho. Iyo kagobutsu sukuriningu shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-05-01

    This system aims to support the selection and development of optimal compounds by resorting to compound classification, molecular superpositioning, acceptor model construction, etc., when information on the target protein structures of the numerous active compounds found by HTS (high throughput screening) is not available and, when available, by resorting to 3-dimensional protein structure modelling, docking study, etc. Investigated in this fiscal year for incorporation into the system are (1) a method of constructing a database of compounds, (2) method of classifying compounds, (3) method of molecular superpositioning, (4) development of a method of 3-dimensional protein structure modelling, and (5) a total system. In relation with item (1), investigations are conducted into the contents and management of HTS target compound data, and methods of incorporating the data into this system are studied. In relation with item (2), surveys and studies are conducted about methods of classification based on skeletal structures. In relation with item (3), application to the analysis of HTS active compounds is taken into consideration when problems are investigated relative to prior arts in molecular superpositioning. In relation with item (4), protein side chain conformation prediction methods are surveyed and studied. In relation with item (5), a user interface is developed and tentatively constructed for a total system. (NEDO)

  6. Giant magnetocaloric effect in isostructural MnNiGe-CoNiGe system by establishing a Curie-temperature window

    KAUST Repository

    Liu, E. K.; Zhang, H. G.; Xu, G. Z.; Zhang, X. M.; Ma, R. S.; Wang, W. H.; Chen, J. L.; Zhang, H. W.; Wu, G. H.; Feng, L.; Zhang, Xixiang

    2013-01-01

    An effective scheme of isostructural alloying was applied to establish a Curie-temperature window in isostructural MnNiGe-CoNiGe system. With the simultaneous accomplishment of decreasing structural-transition temperature and converting

  7. Fiscal 1998 survey report. Welfare equipment (Development of human friendly care support intelligent equipment / Development of home welfare equipment system); 1998 nendo chosa hokokusho. Fukushi kiki (human friendly kaigo shien chino kiki kaihatsu / zaitaku fukushi kiki system kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Since disabled persons increase with a progress of an aging society, while a care power decreases with a decrease in birth rate, development and practical use of the welfare equipment contributing to self-support of aged and handicapped persons, reduction of doctors' or therapists' burdens, and as a result, reduction of medical care costs are desirable. Among them, R and D and practical use are expected of the advanced welfare equipment and system based on human engineering technology contributing to improvement of lives of aged and handicapped persons, and support of nurses and cares of disabled persons. In fiscal 1998, on both human friendly care support intelligent equipment and home welfare equipment system, this project clarified essential technical issues based on the future view, selected some themes to be newly developed in the future, and surveyed and evaluated the details of their R and D concretely. For the former, 'heart disease diagnosis and treatment total support system,' and for the latter, 'body function rehabilitation support system' were surveyed. (NEDO)

  8. Investigation into the MgF2-NiF2, CaF2-NiF2, SrF2-NiF2 systems

    International Nuclear Information System (INIS)

    Ikrami, D.D.; Petrov, S.V.; Fedorov, P.P.; Ol'khovaya, L.A.; Luginina, A.A.; AN SSSR, Moscow. Inst. Fizicheskikh Problem; AN SSSR, Moscow. Inst. Kristallografii)

    1984-01-01

    Using the methods of differential thermal and X-ray phase analyses the systems MgF 2 -NiF 2 , CaF 2 -NiF 2 , SrF 2 -NiF 2 have been studied. In the system SrF 2 -NiF 2 the only orthorhombic compounds SrNiF 4 (a=14.43; b=3.93; c=5.66 (+-0.01 A)) is formed. SrNiF 4 density constitutes: dsub(X-ray)=4.60+-0.01 g/cm 3 , dsub(exp.)=4.60+-0.03 g/cm 3 . Refraction indices are as follows SrNiF 4 :Ng=1.500; Nsub(m)=1.497; Nsub(p)=1.479. SrNiF 4 magnetic ordering temperature Tsub(N) approximately 100 K

  9. Development of research activity support system. 3. Automatic link generation/maintenance on self-evolving database; Kenkyu katsudo shien system no kaihatsu. 3. Jiko zoshokugata database deno bunsho link no jido sakusei/shufuku

    Energy Technology Data Exchange (ETDEWEB)

    Shimada, T.; Futakata, A. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1997-04-01

    For a coordinated task to be accomplished in an organization, documents, charts, and data produced by plural workers need to be shared by the plural workers. This information sharing setup will function more effectively when the meanings and purposes of documents, etc., are arranged in good order relative to the other documents and when they are managed as a group of documents organically linked with each other and properly updated as the task approaches completion. In the self-evolving databases proposed so far, five types of document links representing the relations between documents are automatically generated and the documents are unifiedly managed for the documents yielded by coordinated work to be arranged in a proper order. A procedure for automatically generating document links are established on the basis of information received from the document retrieval system and Lotus Notes application. In a self-evolving database, the document on either side of a link is apt to be lost due to users` moving or deleting documents. An automatic procedure is developed in this report which will enable such document links to correctly restore themselves without loss of semantic relations. 12 refs., 11 figs., 3 tabs.

  10. Phase Equilibria of the Sn-Ni-Si Ternary System and Interfacial Reactions in Sn-(Cu)/Ni-Si Couples

    Science.gov (United States)

    Fang, Gu; Chen, Chih-chi

    2015-07-01

    Interfacial reactions in Sn/Ni-4.5 wt.%Si and Sn-Cu/Ni-4.5 wt.%Si couples at 250°C, and Sn-Ni-Si ternary phase equilibria at 250°C were investigated in this study. Ni-Si alloys, which are nonmagnetic, can be regarded as a diffusion barrier layer material in flip chip packaging. Solder/Ni-4.5 wt.%Si interfacial reactions are crucial to the reliability of soldered joints. Phase equilibria information is essential for development of solder/Ni-Si materials. No ternary compound is present in the Sn-Ni-Si ternary system at 250°C. Extended solubility of Si in the phases Ni3Sn2 and Ni3Sn is 3.8 and 6.1 at.%, respectively. As more Si dissolves in these phases their lattice constants decrease. No noticeable ternary solubility is observed for the other intermetallics. Interfacial reactions in solder/Ni-4.5 wt.%Si are similar to those for solder/Ni. Si does not alter the reaction phases. No Si solubility in the reaction phases was detected, although rates of growth of the reaction phases were reduced. Because the alloy Ni-4.5 wt.%Si reacts more slowly with solders than pure Ni, the Ni-4.5 wt.%Si alloy could be a potential new diffusion barrier layer material for flip chip packaging.

  11. Diffusion couple studies of the Ni-Bi-Sn system

    Directory of Open Access Journals (Sweden)

    Vassilev G.

    2012-01-01

    Full Text Available Investigations of Ni-Bi-Sn system were performed in order to inquire the phase diagram and to assess some diffusion kinetic parameters. For this purpose diffusion couples consisting of solid nickel (preliminary electroplated with tin and liquid Bi-Sn phase were annealed at 370 °C. Three compositions (0.8, 0.6 and 0.4 mole fractions Sn of the Bi-Sn melts were chosen. Annealing times from 24 to 216 h were applied. The phase and chemical compositions of the contact zone were determined by means of electron scanning microscope. It was confirmed that the diffusion layers consist mainly of Ni3Sn4 but other intermetallic phases grow as well. For the first time metastable Ni-Sn phases as NiSn and NiSn8 (NiSn9 were observed in metallurgical alloys (i.e. not in electroplated samples. The existence of a ternary compound previously reported in the literature was confirmed. More than one ternary Ni-Bi-Sn compounds might possibly be admitted. A growth coefficient of (2.29 ± 0.02 x 10-15 m2 s-1 was obtained. It was found that the apparent activation energy for diffusion layers growth (18 ± 8 kJ mol-1 is inferior to that one assessed at growth from solid state Bi-Sn mixtures (88 ± 12 kJ mol-1.

  12. Revisiting Mg–Mg2Ni System from Electronic Perspective

    Directory of Open Access Journals (Sweden)

    Zhao Qian

    2017-11-01

    Full Text Available Both Mg and Mg2Ni are promising electrode materials in conversion-type secondary batteries. Earlier studies have shown their single-phase prospects in electro-devices, while in this work, we have quantitatively reported the electronic properties of their dual-phase materials, that is, Mg–Mg2Ni alloys, and analyzed the underlying reasons behind the property changes of materials. The hypoeutectic Mg–Mg2Ni alloys are found to be evidently more conductive than the hypereutectic Mg–Mg2Ni system. The density functional theory (DFT calculations give the intrinsic origin of electronic structures of both Mg2Ni and Mg. The morphology of quasi-nanoscale eutectics is another factor that can affect the electronic properties of the investigated alloy system; that is, the electrical property change of the investigated alloys system is due to a combination of the intrinsic property difference between the two constituting phases and the change of eutectic microstructures that affect electron scattering. In addition, regarding the Mg–Mg2Ni alloy design for device applications, the electronic property and mechanical aspect should be well balanced.

  13. Interfacial reaction of Ni{sub 3}Sn{sub 4} intermetallic compound in Ni/SnAg solder/Ni system under thermomigration

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Yi-Shan; Yang, Chia-Jung; Ouyang, Fan-Yi, E-mail: fyouyang@ess.nthu.edu.tw

    2016-07-25

    The growth of Ni{sub 3}Sn{sub 4} intermetallic compound (IMC) between liquid–solid interface in micro-scale Ni/SnAg/Ni system was investigated under a temperature gradient of 160 °C/cm at 260 °C on a hot plate. In contrast to a symmetrical growth of Ni{sub 3}Sn{sub 4} on both interfaces under isothermally annealed at 260 °C, the interfacial Ni{sub 3}Sn{sub 4} IMC exhibited asymmetric growth under a temperature gradient; the growth of Ni{sub 3}Sn{sub 4} at cold interface was faster than that at hot side because of temperature gradient induced mass migration of Ni atoms from the hot end toward the cold end. It was found that two-stage growth behavior of Ni{sub 3}Sn{sub 4} IMC under a temperature gradient. A growth model was established and growth kinetic analysis suggested that the chemical potential gradient controlled the growth of Ni{sub 3}Sn{sub 4} at stage I (0–120 min) whereas the dynamic equilibrium between chemical potential gradient and temperature gradient forces was attained at the hot end at stage II (120–210 min). When dynamic equilibrium was achieved at 260 °C, the critical length-temperature gradient product at the hot end was experimentally estimated to be 489.18 μm × °C/cm and the moving velocity of Ni{sub 3}Sn{sub 4} interface due to Ni consumption was calculated to be 0.134 μm/h. The molar heat of transport (Q*) of Ni atoms in molten SnAg solder was calculated to be +0.76 kJ/mol. - Highlights: • Interfacial reaction in Ni/SnAg solder/Ni system under thermal gradient. • Growth rate of Ni{sub 3}Sn{sub 4} at cold end is faster than that at hot end. • Critical length-temperature gradient product at hot end is 489.2 μm°C/cm at 260 °C. • Velocity of Ni{sub 3}Sn{sub 4} moving interface is 0.134 μm/h during dynamic equilibrium. • Molar heat of transport (Q*) of Ni in molten SnAg was +0.76 kJ/mol.

  14. Fiscal 1995 survey report on the environmentally friendly type coal utilization system introduction support project. Verification project on the circulating fluidized bed boiler; Kankyo chowagata sekitan riyo system donyu shien jigyo. Junkan ryudosho boiler ni kakawaru jissho jigyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-01

    In relation to the circulating fluidized bed boiler which reduces the amount of sulfur oxides emitted in coal utilization, a verification project was carried out on installation of the equipment and spread activity in China and the Philippines contributing to the control of environmental pollutant associated with coal utilization and the effective use of energy. At the Fanshan area, installed was a 10t/h internal circulating fluidized bed boiler. At the performance test, coal includes around 7% of impurities such as stone, and the impurities should be excluded continuously at the time of actual run. Therefore, the boiler efficiency had to be changed from 89.5% to 85.8%. Further, power generation facilities have not yet been finished, and the overall operation of boiler turbine has not been executed. At the Zibo area, a 30t/h external circulating fluidized bed boiler was installed. The boiler efficiency reached 86.1%, over the targeted value. At the Batangas area in the Philippines, a 10t/h internal circulating fluidized bed boiler was installed. The boiler efficiency reached 85.8%, over the designed value. About the coal produced in the Philippines, slagging was feared, but the combustion state was favorable. 82 figs., 21 tabs.

  15. Nuclear fusion experimental study on 16 O + 60 Ni system

    International Nuclear Information System (INIS)

    Silva, C.P. da.

    1990-01-01

    Nuclear fusion cross section measurements were performed in the energy range near The Coulomb Barrier (E Lab -> 40-72 MeV), for the system 16 O + 60 Ni, aiming the study of Fusion Process involving heavy ions. (L.C.J.A.)

  16. Synthesis of intermetallic hydrides of Zr-Ni system in the burning regime

    Energy Technology Data Exchange (ETDEWEB)

    Akopyan, A.G.; Dolukhanyan, S.K.; Karapetyan, A.K.; Merzhanov, A.G.

    1983-06-01

    Conditions for production of intermetallides in the Zr-Ni system and their hydrides in the burning regime are studied. Burning regularities of Zr/sub 2/Ni and ZrNi intermetallides in hydrogen are studied, the burning mechanism is found. It is shown that burning proceeds at abnormally low temperatures. Optimum synthesis conditions for Zr/sub 2/NiH/sub 5/ and ZrNiH/sub 3/ hydrides are determined.

  17. Systems integration of business systems. Business system ni kanshite

    Energy Technology Data Exchange (ETDEWEB)

    Furukawa, H [Nippon Steel Corp., Tokyo (Japan)

    1991-09-26

    System integration (SI) is defined as combining hardwares and softwares as the infrastructures with know-hows for their use comprehensively to respond to high-level needs of users. This paper reports the features of an SI being developed by a company (E Company), its concept on the systematized development methodology, and the conceptual models. With the primary policy placed on creative integration standing on customers positions, the SI concept comprises three parts of models for evaluations as seen from the customers, evaluations as seen from the E Company, and the development object systems to link both parts. The third part is further consisted of several lower hierarchies including a customer controlled system hierarchy (this enables customers to control the system through visualization, for example, and includes three logic models (multiple solution selection, optimal solution under restricted conditions, and numerical solution)). 2 refs., 9 figs.

  18. Thermoelectric power of the Ni and Cd substituted YBCO system

    International Nuclear Information System (INIS)

    Mukherjee, C.D.; Ranganathan, R.; Raychaudhuri, A.K.; Chatterjee, N.

    1989-01-01

    The thermoelectric power behaviour in the range between 250 K and the superconducting transition temperature T c of YBa 2 Cu 3-x A x O 7-y (where A = Ni or Cd and x = 0.2 and 0.4) samples has been examined. The normalized resistance and thermopower of substituted samples as functions of temperature are plotted and discussed. It was concluded that nickel has a slight positive role in causing overall thermopower generation in the YBCO system

  19. NiMax system for hadronic event generators in HEP

    International Nuclear Information System (INIS)

    Amelin, N.S.; Komogorov, M.E.

    2001-01-01

    We have suggested a new approach to the development and use of Monte Carlo event generators in high-energy physics (HEP). It is a component approach, when a complex numerical model is composed of standard components. Our approach opens a way to organize a library of HEP model components and provides a great flexibility for the construction of very powerful and realistic numerical models. To support this approach we have designed the NiMax software system (framework) written in C++

  20. Isothermal sections of the Co-Ni-Ti system at 950 and 1 000 C

    Energy Technology Data Exchange (ETDEWEB)

    Li, Han; Jin, Zhanpeng [Central South Univ., Changsha (China). School of Materials Science and Engineering; Zhou, Peng [Hunan Univ. of Science and Technology, Xiangtan (China). Hunan Provincial Key Defense Lab. of High Temperature Wear Resisting Materials and Preparation Technology; Du, Yong [Central South Univ., Changsha (China). State Key Lab. of Powder Metallurgy

    2018-02-15

    The isothermal sections of the Co-Ni-Ti system at 950 and 1000 C were investigated experimentally. Diffusion couples were measured by electron probe microanalysis to construct the phase relations at 950 C, whereas eleven key alloys annealed at 1000 C were investigated using X-ray diffraction and electron probe microanalysis. The ternary phase, τ-(Co,Ni){sub 3}Ti (hP24-VCo{sub 3}), was observed at both temperatures. At 950 C, continuous solid solutions are formed between CoTi{sub 2} and NiTi{sub 2} as well as between CoTi and NiTi. Eight 3-phase regions, i. e. Ni{sub 3}Ti + (Co,Ni)Ti + τ, Ni{sub 3}Ti + γ-(Co,Ni) + τ, τ + c-Co{sub 2}Ti + (Co,Ni)Ti, τ + c-Co{sub 2}Ti + Co{sub 3}Ti, τ + Co{sub 3}Ti + γ-(Co,Ni), c-Co{sub 2}Ti + h-Co{sub 2}Ti + Co{sub 3}Ti, L + β-(Ti) + (Co,Ni)Ti{sub 2} and L + (Co,Ni)Ti{sub 2} + (Co,Ni)Ti, were constructed at 1000 C. Considerable ternary solubilities in Ni{sub 3}Ti, Co{sub 3}Ti and c-Co{sub 2}Ti were determined.

  1. Experimental investigation of phase equilibria in the Ni-Nb-V ternary system

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Xingjun; Yang, Shuiyuan; Wang, Cuiping [Xiamen Univ. (China). Dept. of Materials Science and Engineering; Xiamen Univ. (China). Fujian Provincial Key Lab. of Materials Genome; Zhang, Xianjie; Jiang, Hengxing; Shi, Zhan [Xiamen Univ. (China). Dept. of Materials Science and Engineering

    2017-09-15

    The phase equilibria of the Ni-Nb-V ternary system at 1000 C and 1200 C were established using electron probe microanalysis, X-ray diffraction and differential scanning calorimetry. The results of the investigation revealed that: (1) The Nb solubility in (Ni) and σ{sup '} phases was less than 10 at.%; (2) A ternary compound τ (NiNbV) was confirmed, in which V had a large solubility; (3) A new liquid region was evident at 1200 C, but was absent at 1000 C; (4) The lattice constants of Ni{sub 3}Nb and Ni{sub 6}Nb{sub 7} phase decreased with increase in V content in the Ni{sub 3}Nb and Ni{sub 6}Nb{sub 7}. The phase equilibria of the Ni-Nb-V ternary system will contribute to its thermodynamic assessment.

  2. The constitution of the ternary system Ti-Ni-C; Die Konstitution des Dreistoffes Ti-Ni-C

    Energy Technology Data Exchange (ETDEWEB)

    Schuster, J.C.; Du, Y. [Technische Univ., Vienna (Austria). Inst. fuer Physikalische Chemie

    1998-12-31

    The system Ti-Ni-C was completely re-examined taking a new approach applying XRD, DTA, SEM-EDX and light microscopy, for elaboration of a complete thermodynamic description of the system. The carbon solubility in the binary Ti-Ni compounds is of significance only in the Ti{sub 2}Ni phase, and was found to be 4 at% at 900 C. The thermodynamic description thus achieved enables precise determination of the solubilities of Ti and C in solid or liquid nickel. (orig./CB) [Deutsch] Das System Ti-Ni-C wurde mittels XRD, DTA, SEM-EDX und Lichtmikroskopie umfassend neu untersucht mit dem Ziel, eine komplette thermodynamische Beschreibung zu ermoeglichen. Die Kohlenstoffloeslichkeit in den binaeren Ti-Ni Verbindungen ist nur fuer die Phase Ti{sub 2}Ni signifikant. Bei 900 C betrug sie 4 at% C. Die erarbeitete thermodynamische Beschreibung erlaubt eine praezise Darstellung der Ti- und C-Loeslichkeiten in festem und fluessigem Nickel. (orig.)

  3. FY 2000 Immediate-effect type project for research and development for international standards supporting information technology industries. Comprehensive study on promotion of international standardization; 2000 nendo joho sangyo shien sokkogata kokusai hyojun kaihatsu jigyo seika hokokusho. Kokusai hyojunka suishin ni kakawaru sogo chosa kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    The information technology and international standardization are studied for the elementary information technology, mechanical safety areas and electronic trading, aimed at achieving the international standards in a short time for the information industrial sector, which shows rapid technological development. The program for the elementary information technology includes development/standardization of the testing/evaluation methods for transparent electroconductive films for notebook computers, liquid crystal monitors or the like, specifically for the mechanical and physical properties. The program for mechanical safety areas includes definition of the closed space type mechanical safety monitoring techniques and use of safety-confirmation type sensors for the techniques, and standardization of the requirements of the protectors for use of the safety-confirmation type sensors, among others. The program for the electronic trading includes standardization of the electronic catalogues of the instrumentation devices, dictionaries of the instrumentation devices and device-screening processes. The other efforts include development of the applications and system infrastructure functions, construction of the demonstration test systems, and demonstration tests. (NEDO)

  4. FY 2000 report on the survey to support the R and D on the development of the coal/natural gas use CO2 recovery/utilization technology; 2000 nendo sekitan tennen gas katsuyogata nisanka tanso kaishu riyo gijutsu no kaihatsu ni kansuru kenkyu kaihatsu shien chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    In this study, technology to rationalize energy utilization is developed by which CO2 is efficiently converted into methanol which is the next generation liquid fuel by reacting CO2 with coal, natural gas and steam using solar heat. Together with this study, survey/study are conducted of the trend of the related element technology and the total system technology, trend of the competitive technology, study of comparison with the competitive technology, economical efficiency, possibility of the commercialization, etc. In this report, in Chapter 1, summarized are the trend of the R and D which each country conducts with the aim of using abundant solar energy in the Sun Belt and the trend of other R and D of energy utilization in each country. In Chapter 2, the paper describes the technology that Japan is now developing and the developmental trend of the related technology. In Chapter 3, the methanol supply/demand balance and the related researches were arranged. The most important points in future commercialization of the said technology are the establishment of technology and the economical efficiency. (NEDO)

  5. Interactions in the NiO-MoO3 system upon reduction

    International Nuclear Information System (INIS)

    Afanas'ev, P.V.; Tsurov, M.A.; Kostik, B.G.; Turakulova, A.O.

    1993-01-01

    Interactions in the system NiO-MoO 3 (MoO 2 ) heated in the air and in H 2 were studied by the methods of differential-thermal analysis, thermally programmed reduction, X-ray phase analysis and measurement of magnetization. In the presence of NiO the temperature of MoO 3 reduction start decreases by > 150 K. Simultaneously, in the range of temperatures 5730623 K inhibition of NiO reduction occurs, which is related to the formation of NiMo x alloy. For the samples of NiO+MoO 2 no inhibition of NiO reduction was detected, NiMo x alloy was formed after quantitative reduction of NiO

  6. Thermodynamic assessment of the Cu–Fe–Ni system

    International Nuclear Information System (INIS)

    Dreval, Liya A.; Turchanin, Mikhail A.; Agraval, Pavel G.

    2014-01-01

    Highlights: • The thermodynamic description of the Cu–Fe–Ni system has been updated. • The new experimental data have been used to refine thermodynamic model of the system. • The four-sublattice model has been adopted to predict the equilibria involving the ordered L1 2 phase. • A significant improvement in comparison with the previous assessments has been achieved. • The liquidus and solidus projections have been presented. -- Abstract: The thermodynamic description of the Cu–Fe–Ni system has been updated considering the newly available experimental data, as well as compatibility of the present modeling with those used for the Cu and Fe systems. All of the experimental data available in the literature have been critically reviewed, and the inconsistent information has been excluded. The thermodynamic parameters have been evaluated in order to properly describe the thermodynamic properties of the liquid phase and miscibility gap in the solid state. A significant improvement in comparison with the previous thermodynamic descriptions has been achieved. Additionally, for the ordered L1 2 phase the four-sublattice model has been adopted to predict the ternary phase equilibria involving this phase. A set of thermodynamic parameters for the phases is given

  7. Three NiAs-Ni 2In Type Structures in the Mn-Sn System

    Science.gov (United States)

    Elding-Pontén, Margareta; Stenberg, Lars; Larsson, Ann-Kristin; Lidin, Sven; Ståhl, Kenny

    1997-03-01

    TheB8-type structure field of the Mn-Sn system has been investigated. Two high temperature phases (HTP1 and HTP2) and one low temperature phase (Mn3Sn2) were found. They all crystallize with the NiAs structure type with part of the trigonal bipyramidal interstices filled by manganese atoms in an ordered manner. The ordering as well as the manganese content is different for the three phases, giving rise to three different orthorhombic superstructures. Mn3Sn2seems to have the lowest manganese content, since the corresponding basal unit cell is smaller than for HTP1-2. Structural models of the phases are based on selected area electron diffraction, X-ray powder diffraction, and preliminary single crystal X-ray measurements. The ideal cell parameters found are (a=7ahex,b=3ahex,c=chex), (a=5ahex,b=3ahex,c=chex), and (a=2ahex,b=3ahex,c=chex) for HTP1, HTP2, and Mn3Sn2, respectively. The crystal structure of Mn3Sn2has been refined by means of the Rietveld method from X-ray powder diffraction data. Mn3Sn2is orthorhombic,Pnma,a=7.5547(2),b=5.4994(2),c=8.5842(2) Å,Z=4. (Pbnmin the setting above.) The compound is isostructural with Ni3Sn2andγ‧-Co3Sn2(H. Fjellvåg and A. Kjekshus,Acta Chem. Scand.A40, 23-30 (1986)). FinalRp=8.97%,Rwp=11.44%, GOF=2.86, andRBragg=4.11% using 43 parameters and 5701 observations and 330 Bragg reflections.

  8. Ni(salen): a system that forms many solvates with interacting Ni atoms

    NARCIS (Netherlands)

    Siegler, M.A.M.; Lutz, M.

    2009-01-01

    Recrystallization of [N,N’-Ethylene-bis(salicylideneiminato)]-nickel(II) [Ni(salen)] has been carried out from a large selection of solvents. Crystals can be either solvent free or solvates. This study is based on X-ray crystal structure determinations, which include the redetermination of Ni(salen)

  9. α-NiPt(Al) and phase equilibria in the Ni-Al-Pt system at 1150 deg C

    International Nuclear Information System (INIS)

    Hayashi, S.; Ford, S.I.; Young, D.J.; Sordelet, D.J.; Besser, M.F.; Gleeson, B.

    2005-01-01

    The α-NiPt(Al) phase and its associated equilibria in the Ni-Al-Pt system at 1150 deg C were investigated by analyzing equilibrated bulk alloys and the interdiffusion zones of diffusion couples. Phase constitutions, tie-lines and microstructures were determined using a combination of techniques, including high-energy synchrotron X-ray diffraction, scanning electron microscopy and electron probe microanalysis. A large Pt solubility limit was found to exist in the β-NiAl, ∼42 at.%, and in γ'-Ni 3 Al, ∼32 at.%. The α-NiPt(Al) phase was found to have wide Pt solubility range of about 33-60 at.% and to skew along an almost constant Pt/Al ratio of 1.5. The α-NiPt(Al) has an ordered face-centered tetragonal L1 0 crystal structure, with the Al and Pt atoms found to be preferentially located in the corners and prismatic faces, respectively. The temperature dependence of the lattice parameters and unit cell volume of the α phase were also determined

  10. X-ray fluorescence analysis of Fe - Ni - Mo systems

    International Nuclear Information System (INIS)

    Belyaev, E.E.; Ershov, A.V.; Mashin, A.I.; Mashin, N.I.; Rudnevskij, N.K.

    1998-01-01

    Procedures for the X-ray fluorescence determination of the composition and thickness of Fe - Ni - Mo thin films and the concentration of elements in thick films of the Fe - Ni - Mo alloy are developed [ru

  11. The Ce-Ni-Si system as a representative of the rare earth-Ni-Si family: Isothermal section and new rare-earth nickel silicides

    Energy Technology Data Exchange (ETDEWEB)

    Morozkin, A.V., E-mail: morozkin@tech.chem.msu.ru [Department of Chemistry, Moscow State University, Leninskie Gory, House 1, Building 3, Moscow, GSP-1, 119991 (Russian Federation); Knotko, A.V.; Garshev, A.V. [Department of Chemistry, Moscow State University, Leninskie Gory, House 1, Building 3, Moscow, GSP-1, 119991 (Russian Federation); Faculty of Materials Science, Moscow State University, Leninskie Gory, House 1, Building 73, Moscow, GSP-1, 119991 (Russian Federation); Yapaskurt, V.O. [Department of Petrology, Geological Faculty Moscow State University, Leninskie Gory, Moscow 119991 (Russian Federation); Nirmala, R. [Indian Institute of Technology Madras, Chennai 600036 (India); Quezado, S.; Malik, S.K. [Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, Natal, 59082-970 (Brazil)

    2016-11-15

    The Ce-Ni-Si system has been investigated at 870/1070 K by X-ray and microprobe analyses. The existence of the known compounds, i.e.: Ce{sub 2}Ni{sub 15.8}Si{sub 1.2} (Th{sub 2}Ni{sub 17}-type), Ce{sub 2}Ni{sub 15-14}Si{sub 2-3} (Th{sub 2}Zn{sub 17}-type), CeNi{sub 8.6}Si{sub 2.4} (BaCd{sub 11}-type), CeNi{sub 8.8}Si{sub 4.2} (LaCo{sub 9}Si{sub 4}-type), CeNi{sub 6}Si{sub 6} (CeNi{sub 6}Si{sub 6}-type), CeNi{sub 5}Si{sub 1-0.3} (TbCu{sub 7}-type), CeNi{sub 4}Si (YNi{sub 4}Si-type), CeNi{sub 2}Si{sub 2} (CeGa{sub 2}Al{sub 2}-type), Ce{sub 2}Ni{sub 3}Si{sub 5} (U{sub 2}Co{sub 3}Si{sub 5}-type), Ce{sub 3}Ni{sub 6}Si{sub 2} (Ce{sub 3}Ni{sub 6}Si{sub 2}-type), Ce{sub 3}Ni{sub 4}Si{sub 4} (U{sub 3}Ni{sub 4}Si{sub 4}-type), CeNiSi{sub 2} (CeNiSi{sub 2}-type), ~CeNi{sub 1.3}Si{sub 0.7} (unknown type structure), Ce{sub 6}Ni{sub 7}Si{sub 4} (Pr{sub 6}Ni{sub 7}Si{sub 4}-type), CeNiSi (LaPtSi-type), CeNi{sub 0.8-0.3}Si{sub 1.2-1.7} (AlB{sub 2}-type), ~Ce{sub 2}Ni{sub 2}Si (unknown type structure), ~Ce{sub 4.5}Ni{sub 3.5}Si{sub 2} (unknown type structure), Ce{sub 15}Ni{sub 7}Si{sub 10} (Pr{sub 15}Ni{sub 7}Si{sub 10}-type), Ce{sub 5}Ni{sub 1.85}Si{sub 3} (Ce{sub 5}Ni{sub 1.85}Si{sub 3}-type), Ce{sub 6}Ni{sub 1.4}Si{sub 3.4} (Ce{sub 6}Ni{sub 1.67}Si{sub 3}-type), Ce{sub 7}Ni{sub 2}Si{sub 5} (Ce{sub 7}Ni{sub 2}Si{sub 5}-type) and Ce{sub 3}NiSi{sub 3} (Y{sub 3}NiSi{sub 3}-type) has been confirmed in this section. Moreover, the type structure has been determined for ~Ce{sub 2}Ni{sub 2}Si (Mo{sub 2}NiB{sub 2}-type Ce{sub 2}Ni{sub 2.5}Si{sub 0.5}) and ~Ce{sub 4.5}Ni{sub 3.5}Si{sub 2} (W{sub 3}CoB{sub 3}-type Ce{sub 3}Ni{sub 3-2.7}Si{sub 1-1.3}) and new ternary phases Ce{sub 2}Ni{sub 6.25}Si{sub 0.75} (Gd{sub 2}Co{sub 7}-type), CeNi{sub 7-7.6}Si{sub 6-5.4} (GdNi{sub 7}Si{sub 6}-type) and ~Ce{sub 27}Ni{sub 42}Si{sub 31} (unknown type structure) have been identified in this system. Quasi-binary phases, solid solutions, were detected at 870/1070 K for CeNi{sub 5}, CeNi{sub 3} and Ce

  12. Giant magnetocaloric effect in isostructural MnNiGe-CoNiGe system by establishing a Curie-temperature window

    KAUST Repository

    Liu, E. K.

    2013-03-28

    An effective scheme of isostructural alloying was applied to establish a Curie-temperature window in isostructural MnNiGe-CoNiGe system. With the simultaneous accomplishment of decreasing structural-transition temperature and converting antiferromagnetic martensite to ferromagnetic state, a 200 K Curie-temperature window was established between Curie temperatures of austenite and martensite phases. In the window, a first-order magnetostructural transition between paramagnetic austenite and ferromagnetic martensite occurs with a sharp jump in magnetization, showing a magnetic entropy change as large as −40 J kg−1 K−1 in a 50 kOe field change. This giant magnetocaloric effect enables Mn1− x Co x NiGe to become a potential magnetic refrigerant.

  13. Equilibrium relationships in the system Ni-U-O

    International Nuclear Information System (INIS)

    Mansour, N.A.L.

    1980-01-01

    Phase relationships were established in air and in oxygen. Mixtures of NiO and U 3 O 8 oxidize to NiUO 4 . The results of analysis of NiUO 4 were identical to those previously published for NiU 3 O 10 . The uranate dissociates to NiO and U 3 O 8 at a temperature higher than that of their oxidation back to the uranate on cooling because of the difficulty of oxygen diffusion and uranate nucleation. Accordingly, dissociation temperature was taken to represent equilibrium and was used to calculate roughly ΔH and ΔS for the reaction of dissociation. In presence of NiO, U 3 O 8 melts partially and does not dissociate to the lower oxide. (orig.) [de

  14. Development of new supervisory system with ITV. ITV ni yoru kanshi system ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Shimonaga, S; Matsunaga, R; Ono, H [The Kyushu Electric Power Co. Inc., Fukuoka (Japan)

    1994-02-28

    This paper describes an automatic trespassing supervisory system with ITV and picture processing (PP). The paper details an integrated control system and automatic supervision. The system functions to automatically detect a trespassing by means of PP, transfers items of information collected by sensors to a remote control center, and records relevant data. The operation principle consists of measurement of change in two or more images of moving bodies with binary value at a certain interval, determination on acceptability of the moving bodies represented by human characteristics, and identification of a trespasser. The system consists of an automatic supervisory device using PP and an automatic patrolling and searching device by means of sensor measurements. The supervisory device has images outputted from ITV and VTR processed by PP, host computer, and HD, and linked to an indication mechanism. According to the result of a site test at wireless transmission station of Kyushu Electric Power Company, the difference between measurement values collected by the searching device and those by the supervisory device was [plus minus]3% or less (other than EG output current), which is a useful value for verification. Although the basic technique has been established, practical use of the system still has some problems including performance improvement in picture processing. 37 refs., 38 figs., 18 tabs.

  15. Formation Mechanism of Spherical TiC in Ni-Ti-C System during Combustion Synthesis.

    Science.gov (United States)

    Zhu, Guoliang; Wang, Wei; Wang, Rui; Zhao, Chuanbao; Pan, Weitao; Huang, Haijun; Du, Dafan; Wang, Donghong; Shu, Da; Dong, Anping; Sun, Baode; Jiang, Sheng; Pu, Yilong

    2017-08-29

    The formation mechanism of TiC particles in a Ni-Ti-C system were revealed by using differential thermal analysis (DTA), XRD, and SEM to identify the reaction products in different temperature ranges. The results indicated that the synthesis mechanism of TiC in Ni-Ti-C system was complex; several reactions were involved in the combustion synthesis of TiC-Ni composite. The Ni-Ti intermediate phases play important roles during the formation of TiC. Moreover, the influence of heating rate on the size range of TiC was also discussed.

  16. Experimental investigation of phase equilibria in the Zr-Cu-Ni ternary system

    International Nuclear Information System (INIS)

    Yang, Mujin; Wang, Cuiping; Yang, Shuiyuan; Shi, Zhan; Han, Jiajia; Liu, Xingjun

    2017-01-01

    The phase equilibria in the Zr-Cu-Ni ternary system are investigated combined with X-ray diffraction, electron probe micro-analysis and differential scanning calorimetry. Two isothermal sections of the Zr-Cu-Ni ternary system at 1 000 C and 1 100 C are experimentally established. Most of the binary intermetallic compounds, e.g. Zr 7 Ni 10 , ZrNi, ZrNi 5 , Zr 14 Cu 51 , and Zr 2 Cu 9 , show a remarkable ternary solubility. A new ternary compound named τ 3 (Zr 31.1-30.7 . Cu 28.5-40.3 Ni 40.4-29.0 ) is detected at 1 000 C and dissolved at 1 020 C because the nearby large liquid phase field further expands. The newly determined phase equilibria will provide important information for both thermodynamic assessment and alloy design of Zr-based metallic glass.

  17. Strengthening by ordered precipitates in a Ni--Ni4Mo system

    International Nuclear Information System (INIS)

    Goodrum, J.W.; LeFevre, B.G.

    1977-01-01

    The strength characteristics and microstructures of aged Ni-Mo alloys containing ordered (Ni 4 Mo) precipitates were studied as a function of aging time and temperature. It was found that 17 at. percent Mo alloy aged at 750 0 C produced a uniform dispersion of cuboidal β precipitates which coarsened with time producing a gradual increase in flow stress. The flow stress increment was found to vary in qualitative agreement with both order strengthening and coherency strain models. Both these models give over-estimates of the strengthening increment. A negative dependence of flow stress on temperature is attributed to coherency strain contributions

  18. Report on achievements in proliferation project to assist introduction of environment harmonizing type coal utilization system in fiscal 1998. Joint demonstration project for CMG recovery and utilization system in fiscal 1998 (recovering facilities); Kankyo chowagata sekitan riyo system donyu shien nado fukyu taisaku jigyo. 1998 nendo CMG kaishu riyo system kyodo system kyodo jissho jigyo (kaishu setsubi)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-09-01

    This paper describes the achievements of the discussions in fiscal 1998 on the recovering system for coal bed methane gas to be supplied to the city of Tieling in China. The paper puts on record the associated documents, and figures and drawings. The associated documents appearing in the paper include the table for explosion-proof examination on the recovering devices, a parts list for the RK-3A type test drilling machine, and its operation manual. Specifications for the test drilling machine (including those for the sealing pumps), specifications for the mouth facilities, and device lists are shown. Test drilling device arrangement drawings and standard drilling record table are also described. Central blower specifications, a back-fire preventing device, a device to prevent well exterior from freezing, and a summarized drawing for drain remover for gas induction for the Daixing mine are explained. The schemes for induction and sealing, specifications and procedures for observation devices are shown. Specifications for sealing materials and the centralized monitoring facilities are also touched on. The safety measures, measures taken for power failure in the centralized monitoring facilities, and the control organization are described. Test drilling cost simulation and environment assessing methods are also described. The figures and drawings presented include the topographic map, Daixing mine cavity drawing, pipeline network, and chart for representative test drilling columns near the coal beds were also presented. (NEDO)

  19. Homogeneous (Cu, Ni)6Sn5 intermetallic compound joints rapidly formed in asymmetrical Ni/Sn/Cu system using ultrasound-induced transient liquid phase soldering process.

    Science.gov (United States)

    Li, Z L; Dong, H J; Song, X G; Zhao, H Y; Tian, H; Liu, J H; Feng, J C; Yan, J C

    2018-04-01

    Homogeneous (Cu, Ni) 6 Sn 5 intermetallic compound (IMC) joints were rapidly formed in asymmetrical Ni/Sn/Cu system by an ultrasound-induced transient liquid phase (TLP) soldering process. In the traditional TLP soldering process, the intermetallic joints formed in Ni/Sn/Cu system consisted of major (Cu, Ni) 6 Sn 5 and minor Cu 3 Sn IMCs, and the grain morphology of (Cu, Ni) 6 Sn 5 IMCs subsequently exhibited fine rounded, needlelike and coarse rounded shapes from the Ni side to the Cu side, which was highly in accordance with the Ni concentration gradient across the joints. However, in the ultrasound-induced TLP soldering process, the intermetallic joints formed in Ni/Sn/Cu system only consisted of the (Cu, Ni) 6 Sn 5 IMCs which exhibited an uniform grain morphology of rounded shape with a remarkably narrowed Ni concentration gradient. The ultrasound-induced homogeneous intermetallic joints exhibited higher shear strength (61.6 MPa) than the traditional heterogeneous intermetallic joints (49.8 MPa). Copyright © 2017 Elsevier B.V. All rights reserved.

  20. The Ni-rich Part of the Ni-P-Sn System: Isothermal Sections

    Czech Academy of Sciences Publication Activity Database

    Schmetterer, C.; Vízdal, J.; Kroupa, Aleš; Kodentsov, A.; Ipser, H.

    2009-01-01

    Roč. 38, č. 11 (2009), s. 2275-2300 ISSN 0361-5235 R&D Projects: GA MŠk(CZ) OC08053 Institutional research plan: CEZ:AV0Z20410507 Keywords : lead free solder * phase diagram * Ni-P-Sn Subject RIV: BJ - Thermodynamics Impact factor: 1.428, year: 2009

  1. Fabrication of Ni-Al/diamond composite based on layered and gradient structures of SHS system

    Directory of Open Access Journals (Sweden)

    Lu Jiafeng

    2017-01-01

    Full Text Available In this paper layered and gradient structures of Ni-Al SHS system were adopted to manufacture Ni-Al/diamond composites. The effect of the layered and the diamond mesh gradient structures of Ni-Al/diamond on the SHS process and the microstructure of the composites were investigated. It is found that with the increasing of the number of layers, the combustion wave velocity is decreased. The combustion wave velocity for diamond mesh size gradient structure of Ni-Al SHS is faster than that for the layered structure. A well bonding can be formed between diamond and the matrix in layered and gradient structure Ni-Al/diamond composites due to the melt of Ni-Cr brazing alloy.

  2. Study on mutual diffusion and phase diagram in the Ni-Ta system

    International Nuclear Information System (INIS)

    Pimenov, V.N.; Ugaste, Yu.Eh.; Akkushkarova, K.A.

    1977-01-01

    The mutual diffusion in the Ni-Ta system has been investigated with a view of refining the constitutional diagram. The mutual diffusion factors and their effective values in the various phases and the diffusion activation energies are calculated. Given are the dependences of the phase growth constants and the mutual diffusion factors upon the temperature. The existence of five new phases Ta 2 Ni, TaNi, TaNi 2 , TaNi 3 , TaNi 8 has been discovered in the range of temperatures between 1150 and 1300 deg C. It is established that all the phases have a small concentration range of existence. It is noted that the diffusion characteristics in the phases (mutual diffusion factor and activation energy) differ widely, but fail to correlate with their melting points

  3. Microstructural characterization of alloys of the quasibinary Cu-NiBe system

    Energy Technology Data Exchange (ETDEWEB)

    Spaic, S.; Markoli, B. [Univ. of Ljubljana, Faculty of Natural Science and Engineering, Ljubljana (Slovenia)

    2003-08-01

    Alloys of the quasibinary section Cu-NiBe were experimentally investigated with differential thermal analysis, optical microscopy, electron microanalysis, transmission electron microscopy and X-ray diffraction. The construction of the quasibinary Cu-NiBe phase diagram was made based on the experimental results. The constitution of alloys of the whole section was studied along with the investigation of the microstructure and crystallographic relationship of the NiBe phase in aged alloys from the Cu-rich corner of the Cu-NiBe system. (orig.)

  4. Fiscal 2000 project on measures for assisting and diffusing environmentally-friendly coal utilization system introduction. CMG recovery/utilization system joint demonstration project; 2000 nendo kankyo chowagata sekitan riyo system donyu shien nado fukyu taisaku jigyo chosa hokoku. CMG kaishu riyo system kyodo jissho jigyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    A CMG (coal mine gas) recovery/utilization system was designed, constructed, and then demonstrated at a model coal mining district in Liaoning Province for the purpose of contributing to the solution of energy and environment related problems in China. The recovery system demonstration test, aiming to improve on safety and productivity of coal mining and to supply recovered gas with stability, involved gas drainage test boring, mine sealing, sealed gas induction control, centralized gas monitoring, etc., which were carried out at the coal mine working face. A utilization system demonstration test was conducted, and CMG would continue to be supplied to the current users and CMG utilization would be started at the other 6 coal mines. For the supply of CMG to large-scale gas consuming areas, steel materials were manufactured and processed for spherical gas holders and denitrification facilities, gas holders were constructed, pipe lines were installed, and a provisional gas supply was carried out. For the transfer and diffusion of the technology, Chinese engineers were trained in Japan and Japanese engineers were dispatched to China. (NEDO)

  5. Sub-barrier fusion and transfers in the 40Ca + 58,64Ni systems

    Science.gov (United States)

    Bourgin, D.; Courtin, S.; Haas, F.; Goasduff, A.; Stefanini, A. M.; Montagnoli, G.; Montanari, D.; Corradi, L.; Huiming, J.; Scarlassara, F.; Fioretto, E.; Simenel, C.; Rowley, N.; Szilner, S.; Mijatović, T.

    2016-05-01

    Fusion cross sections have been measured in the 40Ca + 58Ni and 40Ca + 64Ni systems at energies around and below the Coulomb barrier. The 40Ca beam was delivered by the XTU Tandem accelerator of the Laboratori Nazionali di Legnaro and evaporation residues were measured at very forward angles with the LNL electrostatic beam deflector. Coupled-channels calculations were performed which highlight possible strong effects of neutron transfers on the fusion below the barrier in the 40Ca + 64Ni system. Microscopic time-dependent Hartree-Fock calculations have also been performed for both systems. Preliminary results are shown.

  6. Sub-barrier fusion and transfers in the 40Ca + 58,64Ni systems

    Directory of Open Access Journals (Sweden)

    Bourgin D.

    2016-01-01

    Full Text Available Fusion cross sections have been measured in the 40Ca + 58Ni and 40Ca + 64Ni systems at energies around and below the Coulomb barrier. The 40Ca beam was delivered by the XTU Tandem accelerator of the Laboratori Nazionali di Legnaro and evaporation residues were measured at very forward angles with the LNL electrostatic beam deflector. Coupled-channels calculations were performed which highlight possible strong effects of neutron transfers on the fusion below the barrier in the 40Ca + 64Ni system. Microscopic time-dependent Hartree-Fock calculations have also been performed for both systems. Preliminary results are shown.

  7. Report on achievements in proliferation project to assist introduction of environment harmonizing type coal utilization system in fiscal 1998. Joint demonstration project for CMG recovery and utilization system in fiscal 1998 (utilization facilities); Kankyo chowagata sekitan riyo system donyu shien nado fukyu taisaku jigyo seika hokokusho. 1998 nendo CMG kaishu riyo system kyodo jissho jigyo (riyo setsubi)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-09-01

    This paper describes the achievements of the discussions in fiscal 1998 on the utilization facilities related to the coal bed methane gas supply plan for the city of Tieling in China. The gas quality standard calls for 3,500 kcal/m{sup 3} or more (methane concentration of 41% or higher). The supply is planned to start in December 1999, and continue the supply of 141,000 Nm{sup 3}/day in 2000, and 212,000 Nm{sup 3}/day in 2001 and thereafter. A gas supply center to collect gases recovered from each mine will be installed in the vicinity of the existing gas holder located about 2 km east of the Tiefa Mining Bureau. The Japanese side bears the cost of installing a gas compression and transportation facility for gas supply to the city of Tieling, a monitoring system, and devices for comprehensive surveillance system. This paper shows the overall plan drawings, the drain separator room building plan, the plans for arranging devices in the machine room, and the piping scheme. In addition, the piping plan around the gas holder, and the basic device plan are shown. Also appearing in the paper are the machine summary drawings, summarized flow charts, gas holder plan, de-humidifier plan, and electricity and instrumentation plans. The main body and supporting structure for the gas holder, and the foundation strength calculation sheets are also shown. Descriptions are given also on the facilities to deal with variation in demand quantity and supply quantity. (NEDO)

  8. Predicting glass-forming compositions in the Al-La and Al-La-Ni systems

    International Nuclear Information System (INIS)

    Gargarella, P.; de Oliveira, M.F.; Kiminami, C.S.; Pauly, S.; Kuehn, U.; Bolfarini, C.; Botta, W.J.; Eckert, J.

    2011-01-01

    Research highlights: → The glass-forming ability of the Al-La and Al-La-Ni systems was studied using the λ* and the λ.Δe criteria. → Both criteria predicted with just 1% at. of error the best glass-former verified so far in the Al-La system. → Four new glass-former compositions could be predicted in the Al-La-Ni system using the λ.Δe criterion. → The best glass-former reported so far in the Al-La-Ni system was found. - Abstract: In this work, a criterion considering the topological instability (λ) and the differences in the electronegativity of the constituent elements (Δe) was applied to the Al-La and Al-Ni-La systems in order to predict the best glass-forming compositions. The results were compared with literature data and with our own experimental data for the Al-La-Ni system. The alloy described in the literature as the best glass former in the Al-La system is located near the point with local maximum for the λ.Δe criterion. A good agreement was found between the predictions of the λ.Δe criterion and literature data in the Al-La-Ni system, with the region of the best glass-forming ability (GFA) and largest supercooled liquid region (ΔT x ) coinciding with the best compositional region for amorphization indicated by the λ.Δe criterion. Four new glassy compositions were found in the Al-La-Ni system, with the best predicted composition presenting the best glass-forming ability observed so far for this system. Although the λ.Δe criterion needs further refinements for completely describe the glass-forming ability in the Al-La and Al-La-Ni systems, the results demonstrated that this criterion is a good tool to predict new glass-forming compositions.

  9. Magnetic interactions in martensitic Ni-Mn based Heusler systems

    Energy Technology Data Exchange (ETDEWEB)

    Aksoy, Seda

    2010-04-22

    In this work, magnetic, magnetocaloric and structural properties are investigated in Ni-Mn-based martensitic Heusler alloys with the aim to tailor these properties as well as to understand in detail the magnetic interactions in the various crystallographic states of these alloys. We choose Ni{sub 50}Mn{sub 34}In{sub 16} as a prototype which undergoes a martensitic transformation and exhibits field-induced strain and the inverse magnetocaloric effect. Using the structural phase diagram of martensitic Ni-Mn-based Heusler alloys, we substitute gallium and tin for indium to carry these effects systematically closer to room temperature by shifting the martensitic transformation. A magneto-calorimeter is designed and built to measure adiabatically the magnetocaloric effect in these alloys. The temperature dependence of strain under an external magnetic field is studied in Ni{sub 50}Mn{sub 50-x}Z{sub x} (Z: Ga, Sn, In and Sb) and Ni{sub 50}Mn{sub 34}In{sub 16-x}Z{sub x} (Z: Ga and Sn). An argument based on the effect of the applied magnetic field on martensite nucleation is adopted to extract information on the direction of the magnetization easy axis in the martensitic unit cell in Heusler alloys. Parallel to these studies, the structure in the presence of an external field is also studied by powder neutron diffraction. It is demonstrated that martensite nucleation is influenced by cooling the sample under a magnetic field such that the austenite phase is arrested within the martensitic state. The magnetic interactions in Ni{sub 50}Mn{sub 37}Sn{sub 13} and Ni{sub 50}Mn{sub 40}Sb{sub 10} are characterized by using neutron polarization analysis. Below the martensitic transformation temperature, M{sub s}, an antiferromagnetically correlated state is found. Ferromagnetic resonance experiments are carried out on Ni{sub 50}Mn{sub 37}Sn{sub 13} and Ni{sub 50}Mn{sub 34}In{sub 16} to gain more detailed information on the nature of the magnetic interactions. The experimental

  10. First principles, thermal stability and thermodynamic assessment of the binary Ni-W system

    Energy Technology Data Exchange (ETDEWEB)

    Isomaeki, Iikka; Haemaelaeinen, Marko; Gasik, Michael [Aalto Univ., Espoo (Finland). School of Chemical Engineering; Braga, Maria H. [Porto Univ. (Portugal). CEMUC, Physics Engineering Dept.

    2017-12-15

    The Ni-W binary system was assessed using critically evaluated experimental data with assistance from first principles analysis and the CALPHAD method. The solution phases (liquid, fcc-A1 and bcc-A2) were modeled using the substitutional regular solution model. The recently discovered Ni{sub 8}W metastable phase was evaluated as Fe{sub 16}C{sub 2}- like martensite with three sublattices, and shown to be possibly stable according to first principles calculations. Ni{sub 8}W was also modeled as an interstitial compound, but the model is not good because the solubility of tungsten in nickel is very low, especially at low temperatures. There is no experimental evidence for such low solubility. The other binary compounds Ni{sub 4}W and Ni{sub 3}W were assessed as stoichiometric ones. Compared independent experimental and first principles data agree well with the calculated phase diagram using updated thermodynamic parameters.

  11. Thermodynamic properties of alloys and fusibility diagram of Fe-Ni-Mn system

    International Nuclear Information System (INIS)

    Danilenko, V.M.; Turkevich, V.Z.

    1987-01-01

    Thermodynamic calculation of the fusibility diagram of Fe-Ni-Mn system in the subregular solution approximation is performed. The calculated fusibility diagram fits the experimental one in kind and degree

  12. Experimental investigation of phase equilibria in the Co-Ni-Zr ternary system

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Xingjun; Yang, Shuiyuan; Yu, Wenjie; Wang, Cuiping [Xiamen Univ. (China). Fujian Key Laboratory of Materials Genome; Xiong, Huaping; Cheng, Yaoyong; Wu, Xin [Beijing Institute of Aeronautical Materials (China). Div. of Welding and Forging

    2016-10-15

    The phase equilibria of the Co-Ni-Zr ternary system at 1 000 C, 1 100 C and 1 200 C were experimentally investigated by means of back-scattered electron imaging, electron probe microanalysis and X-ray diffraction on the equilibrated ternary alloys. In this study, no ternary compound is found. The (αCo, Ni) phase region extends from the Ni-rich corner to the Co-rich corner with small solubility of Zr at three sections. At 1 000 C and 1 100 C, Ni{sub 5}Zr, Co{sub 2}Zr and Ni{sub 10}Zr{sub 7} phases have large solid solution ranges, but Ni{sub 10}Zr{sub 7} phase disappears at 1 200 C. The Ni{sub 7}Zr{sub 2}, NiZr, Co{sub 11}Zr{sub 2}, Co{sub 23}Zr{sub 6} and CoZr phases exhibit nearly linear compounds in the studied sections, and have large composition ranges. Additionally, some differences in phase relationship exist among the above three isothermal sections.

  13. Phase equilibria in the ternary In-Ni-Sn system at 700 °C.

    Science.gov (United States)

    Schmetterer, C; Zemanova, A; Flandorfer, H; Kroupa, A; Ipser, H

    2013-04-01

    The phase equilibria of the ternary system In-Ni-Sn were investigated experimentally at 700 °C using X-ray diffraction (XRD) and scanning electron microscopy (SEM) including electron micro probe analysis (EMPA) and energy dispersive X-ray spectroscopy (EDX). A corresponding isothermal section was established based on these results. This particular temperature was chosen because it allowed obtaining reliable results within reasonable time. The existence of the ternary phase InNi 6 Sn 5 was confirmed whereas the ternary compound In 2 NiSn, reported earlier in literature, was found to be part of a large solid solution field based on binary InNi. The ternary solubility of the binary phases was established, and continuous solid solutions were found between the isostructural phases Ni 3 Sn LT and InNi 3 as well as between Ni 3 Sn 2 HT and InNi 2 . In addition, this isothermal section could be well reproduced by CALPHAD modelling. The resulting calculated isotherm at 700 °C is presented, too, and compared with the experimental results.

  14. Determination of standard Ghibbs free energy of formation of NiW sub 2 B sub 2 and activity of Ni-W binary system by EMF measurement. Kidenryokuho ni yoru NiW sub 2 B sub 2 no hyojun seisei Gibbs jiyu energy to Ni-W 2 seibunkei no katsuryo no sokutei

    Energy Technology Data Exchange (ETDEWEB)

    Kayama, Koichiro; Hashimoto, Yasuhiko; Suzuki, Kenji; Matsuo, Hideki (Himeji Inst. of Tech., Hyogo (Japan) Fukushin Electric Co., Ltd., Hyogo (Japan))

    1989-12-25

    NiW {sub 2} B {sub 2} (M phase), existing in trinary Ni-W-B system, was measured in standard Gibbs free energy (GF) of formation in the temperature range from 1273K to 1423K by an electromotive force method (EMF) with use of solid oxide electrolyte. First, oxide phase in equilibrium with three-phase M-W-Ni solid solution region was confirmed to be B {sub 2} O {sub 3}. Binary Ni-W system solid solution in equilibrium with M phase and W phase is constant in composition with Ni-16.4mo1%W in the above temperature range. WO {sub 2} and WO {sub 2.72} were actually measured in GF. As Ni-W solid solution is in equilibrium with WO {sub 2} and WO {sub 2.72}, binary Ni-W system was measured in activity by the EMF, and Ni-16.4mo1%W solid solution was calculated in GF of mixing by use of the above measured GF of WO {sub 2} and WO {sub 2.72}. Finally with use of sample in M-W-Ni solid solution region, M phase was calculated in GF by the EMF. The result of those calculations were expressed with experimental formulas. 19 refs., 10 figs., 3 tabs.

  15. Ternary systems Sr-{Ni,Cu}-Si: Phase equilibria and crystal structure of ternary phases

    International Nuclear Information System (INIS)

    Nasir, Navida; Melnychenko-Koblyuk, Nataliya; Grytsiv, Andriy; Rogl, Peter; Giester, Gerald; Wosik, Jaroslaw; Nauer, Gerhard E.

    2010-01-01

    Phase relations were established in the Sr-poor part of the ternary systems Sr-Ni-Si (900 deg. C) and Sr-Cu-Si (800 deg. C) by light optical microscopy, electron probe microanalysis and X-ray diffraction on as cast and annealed alloys. Two new ternary compounds SrNiSi 3 (BaNiSn 3 -type) and SrNi 9-x Si 4+x (own-type) were found in the Sr-Ni-Si system along with previously reported Sr(Ni x Si 1-x ) 2 (AlB 2 -type). The crystal structure of SrNi 9-x Si 4+x (own-type, x=2.7, a=0.78998(3), c=1.1337(2) nm; space group P4/nbm) was determined from X-ray single crystal counter to be a low symmetry derivative of the cubic, parent NaZn 13 -type. At higher Si-content X-ray Rietveld refinements reveal the formation of a vacant site (□) corresponding to a formula SrNi 5.5 Si 6.5 □ 1.0 . Phase equilibria in the Sr-Cu-Si system are characterized by the compounds SrCu 2-x Si 2+x (ThCr 2 Si 2 -type), Sr(Cu x Si 1-x ) 2 (AlB 2 -type), SrCu 9-x Si 4+x (0≤x≤1.0; CeNi 8.5 Si 4.5 -type) and SrCu 13-x Si x (4≤x≤1.8; NaZn 13 -type). The latter two structure types appear within a continuous solid solution. Neither a type-I nor a type-IX clathrate compound was encountered in the Sr-{Cu,Ni}-Si systems. Structural details are furthermore given for about 14 new ternary compounds from related alloy systems with Ba. - Graphical abstract: The crystal structure of SrNi 9-x Si 4+x (own-type, x=2.7, a=0.78998(3), c=1.1337(2) nm; space group P4/nbm) was determined from X-ray single crystal counter to be a low symmetry derivative of the cubic, parent NaZn 13 -type and is related to CeNi 8.5 Si 4.5 -type.

  16. Sputtering Yields of Si and Ni from the Ni1-xSix System Studied by Rutherford Backscattering Spectrometry

    Science.gov (United States)

    Kim, Su Chol; Yamaguchi, Satoru; Kataoka, Yoshihide; Iwami, Motohiro; Hiraki, Akio; Satou, Mamoru; Fujimoto, Fuminori

    1982-01-01

    Sputtering yields of Si and Ni from thin layer films of Ni-Si compounds (Ni1-xSix), including the pure materials (Ni and Si), caused by 5 keV Ar+ ion bombardment were investigated using backscattering spectrometry. The sputtering yield for Si from Ni1-xSix increased with increasing Si concentration. However, there is an abrupt decrease in the yield for Si concentrations above NiSi2 to pure Si. This is in clear contrast to the sputtering yield of Ni from Ni1-xSix which increased with increasing Ni concentration monotonously. These results are discussed on the basis of both the difference in the atomic density and the electronic state of the alloy.

  17. Shape of growing crystals of primary phases in autectic alloys of Fe - Fe2B and Ni - Ni3B systems

    International Nuclear Information System (INIS)

    Tavadze, F.N.; Garibashvili, V.I.; Nakaidze, Sh.G.

    1983-01-01

    Shapes of Fe 2 B and Ni 3 B crystal growth in eutectic Fe-B and Ni-B system alloys are considered. Iron hemiboride primary crystals take the form of a plane-face phase boundary and inherit a tetragonal prismatic lattice. After the crystal attains the critical size the dendritic branching occurs resulting in formation of a typical sceleton dendrite. Comparison of data obtained with entropy of melting for Fe 2 B and Ni 3 B borides shows that FeB crystals during the growth should take the spherical form. It is stated that the shape of growing crystals in Fe-Fe 2 B and Ni-Ni 2 B eutectic colonies is determined by the shape of borides

  18. Hydrogen evolution in [NiFe] hydrogenases and related biomimetic systems: similarities and differences.

    Science.gov (United States)

    Das, Ranjita; Neese, Frank; van Gastel, Maurice

    2016-09-21

    In this work, a detailed quantum chemical study of the mechanism of [Ni(bdt)(dppf)] (Ni(II)L) catalyzed hydrogen formation [A. Gan, T. L. Groy, P. Tarakeshwar, S. K. S. Mazinani, J. Shearer, V. Mujica and A. K. Jones, J. Am. Chem. Soc., 2015, 137, 1109-1115] following an electro-chemical-electro-chemical (ECEC) pathway is reported. The complex exclusively catalyzes the reduction of protons to molecular hydrogen. The calculations suggest that the first one-electron reduction of the [Ni(II)L] catalyst is the rate limiting step of the catalytic cycle and hence, the buildup of detectable reaction intermediates is not expected. The catalytic activity of the [Ni(II)L] complex is facilitated by the flexibility of the ligand system, which allows the ligand framework to adapt to changes in the Ni oxidation state over the course of the reaction. Additionally, a comparison is made with the catalytic activity of [NiFe] hydrogenase. It is argued that the directionality of the reversible hydrogen formation reaction is controlled by the ligand field of the nickel ion and the possibility for side-on (η(2)) binding of H2: if the ligand framework does not allow for η(2) binding of H2, as is the case for [Ni(II)L], the catalyst irreversibly reduces protons. If the ligand field allows η(2) binding of H2, the catalyst can in principle work reversibly. The conditions for η(2) binding are discussed.

  19. Thermodynamic properties of liquid alloys systems Fe - Ni - O - Me - Si

    Directory of Open Access Journals (Sweden)

    Н.О. Шаркіна

    2008-01-01

    Full Text Available  In the isoperabelic calorimeter at 1870 are determined partial and integral enthalpies of mixture of liquid alloys of systems Fe – Ni – O - Me and Fe – Ni – O – Me – Si, where Me – IVb-, Vb-, VIb-metals. The basis of alloy was served invars with the contents of oxygen by 0,06 %. Established, that the melts of systems Fe – Ni – O – IVb- (Vb--metals are characterized by strong interparticle interplay. The components of the maiden portions IVb- (Vb--metals in Fe – Ni – O melts are accompanied by very large exothermal effects (from – 400 up to – 1000 kJ/mol, which one considerably surpass those in double melts Fe(Ni – Me. The subsequent portions IVb- (Vb--metals caused smaller allocation of a heat (in limits from – 100 up to – 30 kJ/mol, that is conditioned by a decrease of the contents of dissolved oxygen. The partial enthalpies of mixture of molybdenum and tungsten in melts Fe – Ni – O are close to those in a nickel, and for a chromium exceed them. Is rotined, that D` HSi in liquid alloys Fe – Ni – O – Mo (– 450 kJ/mol considerably surpass that are characteristic for a nickel (– 50 kJ/mol. It is explained by interplay of silicon with the stayed dissolved oxygen in initial melts of a system Fe – Ni – O – Mo.

  20. Study of highly efficient power generation system based on chemical-looping combustion; Chemical loop nenshoho ni yoru kokoritsu hatsuden system no kaihatsu ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Ishida, S; Suzuki, T; Yamamoto, M [Tokyo Institute of Technology, Tokyo (Japan). Research Laboratory of Resources Utilization

    1997-02-01

    This paper describes the research and development of power generation system by means of chemical-looping combustion. For this system, fuel flows in a reduction reactor and air flows in an oxidation reactor. These two flows are separated. As a result, recovery of CO2 without energy consumption, drastic improvement of power generation efficiency, and suppression of NOx emission are expected. To realize the above, two promising candidates, NiCoO2/YSZ and NiO2/NiAl2O4, have been found as recycle solid particles between the both reactors. These have excellent oxidation/reduction cycle characteristics. By these particles as well as the existing particle, NiO/YSZ, practical application of the chemical-looping combustion is realized. Besides LNG, coal and hydrogen were considered as fuels. When using coal or hydrogen, it was found that temperature of the reduction reactor should be increased the same as that of the oxidation reactor. This is a different point from a case using LNG as a fuel. 5 refs., 2 figs.

  1. Glass forming ability of the Al-Ce-Ni system; Avaliacao da capacidade de formacao vitrea do sistema Al-Ce-Ni

    Energy Technology Data Exchange (ETDEWEB)

    Triveno Rios, C. [Engenharia Mecanica, Universidade Federal de Mato Grosso, Rondonopolis, MT (Brazil)], e-mail: triveno@ufmt.br; Surinach, S.; Baro, M.D. [Departamento de Engenharia de Materiais - Universidade Federal de Sao Carlos, SP (Brazil); Bolfarini, C.; Botta, W.J.; Kiminami, C.S. [Departamento de Fisica da Universidade Autonoma de Barcelona, Bellaterra (Spain)

    2010-07-01

    In the present work, the glass forming ability (GFA) and its compositional dependence on Al-Ni-Ce system alloys were investigated in function of several thermal parameters. Rapidly quenched Al{sub 85}Ni{sub 15}-{sub X}Ce{sub X} (X=4,5,6,7,10), Al{sub 90}Ni{sub 5}Ce{sub 5}, Al{sub 89}Ni{sub 2}.{sub 4}Ce{sub 8}.{sub 6}, Al{sub 80}Ni{sub 15.6}Ce{sub 4}.{sub 4} and Al{sub 78}Ni{sub 18.5}Ce{sub 3.5} amorphous ribbons were produced by melt-spinning and the structural transformation during heating was studied using a combination of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results showed that the GFA and the thermal stability in the Al-rich corner of Al- Ni-Ce system alloys were enhanced by increasing the solute content and specifically the Ce content (author)

  2. Prospects for designing structural cast eutectic alloys on Al-Ce-Ni system base

    International Nuclear Information System (INIS)

    Belov, N.A.; Naumova, E.S.

    1996-01-01

    The phase diagram of Al-Ce-Ni system is built for an aluminium corner at component concentration up to 16 mass %Ce and 8 mass%Ni. A ternary eutectic reaction is established at 12%Ce, 5%Ni and 626 deg C. The ternary eutectic alloy is similar in structure to rapidly cooled Al base alloys with transition metals. The possibility to design new cast alloys based on three-phase (Al)+NiAl 3 +CeAl 4 eutectics is under consideration. Al-Zn-Mg-Cu, Al-Sc and Al-Zr base alloys can be used as (Al) constituent of the eutectics. The new alloys may be considered as heat resistant ones due to the fact that no structural changes are observed in castings on heating up to 350 deg C. 18 refs.; 4 figs.; 2 tabs

  3. Isothermal sections of the state diagram for the Pr-Ni-Ge system at 870 (0-0,5Pr) and 670 K (0,5-1Pr)

    International Nuclear Information System (INIS)

    Fedyna, M.F.; Pecharskij, V.K.; Bodak, O.I.

    1987-01-01

    Method of X-ray phase and microstructural analyses were used to study Pr-Ni-Ge ternary system at 870K (0-0.50 at.fractions of Pr) and 670K (0.50-1.00 at.fractions of Pr). 11 ternary compounds exist in the system: Pr 1-x (NiGe) 13 (x=0.24), PrNi 2 Ge 2 , Pr 2 Ni 3 Ge 5 , PrNiGe 3 , Pr 2 NiGe 6 , Pr 3 Ni 4 Ge 4 , PrNi (1-x) Ge 2 (x=0.33), PrNiGe, Pr(NiGe) 2-x (x=0.14), Pr 3 NiGe 2 , ∼Pr 5 NiGe 4 . Crystal structure was determined for seven ternary compounds

  4. Experimental investigation of phase equilibria in the Zr-Cu-Ni ternary system

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Mujin; Wang, Cuiping; Yang, Shuiyuan; Shi, Zhan; Han, Jiajia; Liu, Xingjun [Xiamen Univ. (China). College of Materials and Fujian Provincial Key Lab. of Materials Genome

    2017-08-15

    The phase equilibria in the Zr-Cu-Ni ternary system are investigated combined with X-ray diffraction, electron probe micro-analysis and differential scanning calorimetry. Two isothermal sections of the Zr-Cu-Ni ternary system at 1 000 C and 1 100 C are experimentally established. Most of the binary intermetallic compounds, e.g. Zr{sub 7}Ni{sub 10}, ZrNi, ZrNi{sub 5}, Zr{sub 14}Cu{sub 51}, and Zr{sub 2}Cu{sub 9}, show a remarkable ternary solubility. A new ternary compound named τ{sub 3} (Zr{sub 31.1-30.7} . Cu{sub 28.5-40.3}Ni{sub 40.4-29.0}) is detected at 1 000 C and dissolved at 1 020 C because the nearby large liquid phase field further expands. The newly determined phase equilibria will provide important information for both thermodynamic assessment and alloy design of Zr-based metallic glass.

  5. Fiscal 1999 achievement report on regional consortium research and development project. Regional consortium research on energy in its 2nd year (Research and development of high-precision self-propelled autonomous assistance system for large farmland); 1999 nendo daikibo nogyo muke seimitsu jiritsu soko sagyo shien system no kaihatsu kenkyu seika hokokusho. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Research and development is conducted to construct an autonomous system optimum for application to production agriculture. In the development of a mechanical vision-aided navigation sensor, a sensor system is developed and found to be fit for practical application. In the development of a No. 2 robot controller and an automatic steering unit, a controller equipped with a CAN (control area network) interface is built, and found to function normally. As for the navigation of tractors, algorithm for the control of autonomous self-propelled operation and a data transmission control system are developed, and tested. In the GPS (Global Positioning System)-aided mapping of the yields of wheat and potato, mapping algorithm is studied. A fertilizer distributor and a weeder which are operated by instructions from a tractor are tested for behavior, a sensor system is developed to do jobs on the farm, and a database system for farm-related information management is developed. (NEDO)

  6. Achievement report for fiscal 1999 on research and development of technologies for medical welfare equipment. Surgery support system for brain tumors and other conditions (Rationalization for energy profit); 1999 nendo iryo fukushi kiki gijutsu kenkyu kaihatsu seika hokokusho. Noshuyo nado shujutsu shien system (energy shiyo gorika)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-05-01

    In the second phase of experimental micro-manipulator fabrication, insertion parts equipped with three manipulators and operation input units are built and evaluated. The system comprises three input units and a console with a built-in controller etc., and the console is checked for shape and operability. A high resolution and high brightness stereoscopic viewer is developed for clinical use by surgical operators, and is examined for practicality. The positioning system for the intraoperative vision instrument are improved relative to its attachment method, accuracy, and sterilization tolerance. The result is evaluated, and then further improvement is made. Some functions are added to the surgical planning software program. Software programs are constructed for the real-time control and operation of the viewing system. For the micro-manipulator system to serve as a total system, the forceps are extended, tips are developed for the suction device and incision device, and their functions as members of the system are evaluated. (NEDO)

  7. Thermodynamic modeling and experimental investigation of the phase stability at the Ni-rich region of the Ni-Al-Cr-Ir system

    International Nuclear Information System (INIS)

    Zhang, C.; Zhang, F.; Chen, S.-L.; Cao, W.-S.; Chang, Y.A.

    2011-01-01

    The effect of adding 3 at.% Cr on the phase stability of the Ni-Al-Ir system was studied experimentally at 1250 deg. C. A thermodynamic description of the Ni-Al-Cr-Ir quaternary system in the Ni-rich region was then developed based on the microstructures, the crystal structures and the phase compositions determined by experiment for eight alloys in both as-cast and 1250 deg. C annealed states. The calculated isothermal section at 1250 deg. C using the obtained description was consistent with the phase-equilibrium data obtained in this study. The calculated two-dimensional section of liquidus projection was also in accordance with the primary phases of solidification observed from alloys in the as-cast state. The effects of Cr additions to the Ni-Al-Ir alloys on the as-cast and annealed microstructures were elucidated through Scheil simulation and phase-equilibrium calculation using Pandat.

  8. FY 2000 Immediate-effect type project for research and development for international standards supporting information technology industries. Standardization of the methods of electronic trading of the integrated systems from the designing to production; 2000 nendo joho sangyo shien sokkogata kokusai hyojun kaihatsu jigyo seika hokokusho. Sekkei kara seizo made no ikkan system no denshiteki torihiki hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    This project is aimed at standardization of, e.g., terminology for preparation of the dictionary of the measuring instruments manufactured by the Japan Electric Measuring Instruments Manufacturers' Association (JEMIMA) members, as the first step for realizing the e-Business of the related industry. The FY 2000 efforts are directed to the standardization of terms, classification, description of properties and basic semantic units (BSUs) for making the measuring instruments dictionary including flow meters, thermometers, level meters, meters, wattmeters, indicators, transducers, recorders, temperature transmitters, special instruments for steel making, and so on. Document type definition (DTD) is also standardized for flow meters, thermometers and level meters for information exchange by XML. The applications are also developed for electronic catalog creation support system, electronic catalog registration and revision support system, instrumentation selection support system, and instrumentation retrieval and viewing support system. They are installed in the clients' server systems, to implement the performance tests. Creation/registration and use of the electronic catalogs on the Internet are demonstrated for flow meter, thermometers and level meters. (NEDO)

  9. Crystal-field splitting in coadsorbate systems: c (2x2) CO/K/Ni (100)

    NARCIS (Netherlands)

    Hasselström, J.; Föhlisch, A.; Denecke, R.; Nilsson, A.; Groot, F.M.F. de

    2000-01-01

    It is demonstrated how the crystal field splitting (CFS) fine structure can be used to characterize a coadsor-bate system. We have applied K 2p x-ray absorption spectroscopy (XAS) to the c(2x2) CO/K/Ni(100) system. The CFS fine structure is shown to be sensitive to the the local atomic

  10. Experimental investigation and thermodynamic modeling of the Ni-Al-Ru ternary system

    International Nuclear Information System (INIS)

    Zhu, J.; Zhang, C.; Cao, W.; Yang, Y.; Zhang, F.; Chen, S.; Morgan, D.; Chang, Y.A.

    2009-01-01

    In this study, a thermodynamic description of the Ni-Al-Ru system was obtained in terms of experimental phase equilibrium data as well as first-principles-calculated energetics. The calculated isotherms and liquidus projection using this description are in accord with the experimental data obtained in the present study as well as those previously reported in the literature, and the model-calculated enthalpies of formation agree with subsequent first-principles-calculated values. During the thermodynamic modeling of the Ni-Al-Ru system, we encountered great challenges initially to account for one of the experimentally determined isotherms reported in the literature. To reconcile these discrepancies, additional experiments were carried out and the results obtained supported the phase equilibrium data reported in the literature. The model-calculated enthalpies agree with subsequent first-principles-calculated values. The approach adopted in this study using phase equilibrium data of Ni-Al-Ru and the descriptions of Ni-Al and Ni-Ru to identify errors in the enthalpy of AlRu could be a general tool that could be used for other systems

  11. Neutron diffraction determination of atomic mean-square displacements in cubic compounds of Ni-Al and Ni-Al-Cu systems

    International Nuclear Information System (INIS)

    Khidirov, I.; Mukhtarova, N.N.

    2002-01-01

    The atomic mean-square displacements (AMSD) are some of important characteristics of the solid and can be the main information for determination of a number of other characteristics of substances. In the work AMSD is determined for a number of cubic compounds of Ni-Al, Ni-Al-Cu systems immediately from intensities of neutron diffraction maxima. It is shown by the offered method that in all NiAl x and NiAlCu x compounds with the CsCl - type structure AMSD are near each other and they are practically constant. Therefore it is possible to assume that within the homogeneity region of these compounds the interatomic bond forces are changed insignificantly

  12. Improved properties of the catalytic model system Ni/Ru(0001)

    DEFF Research Database (Denmark)

    Egeberg, Rasmus; Chorkendorff, Ib

    2001-01-01

    ) illustrating the unique properties of metal-on-metal systems. The effect of enhanced reactivity is primarily ascribed to electronic effects induced by a straining of the Ni overlayer. The enhanced reactivity towards CH4 is accompanied by new features in the thermal desorption spectra of CO. The reactivity...... of the, system depends strongly on the annealing temperature. Molecular beam experiments at high translational energy are qualitatively different from thermal data showing a monotonic decrease of the CH4 sticking probability as Ni is added....

  13. Achievement report for fiscal 1998. Research and development project of regional consortiums (energy field in the regional consortiums / research and development of a precise autonomous operating system for large-scale farm use (the first year)); 1998 nendo chiiki consortium energy bun'ya. Daikibo nogyo muke seimitsu jiritsu soko sagyo shien system no kenkyu kaihatsu (dai 1 nendo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    A precise autonomous operating system is under development to commercialize new agricultural tractors that make possible the stable and safe food supply in Hokkaido in the future as the Japan's food base, and meet the regional needs. This paper describes the development achievements during fiscal 1998. A highly precise and robust automatic driving algorithm was developed by adopting RTK-GPS as a navigation sensor, optical fiber gyroscope and machine vision to have them perform active sensor fusion. Autonomous operation was possible with an error of about 15 cm at a speed as high as 3 m/s. Development and prototype fabrication were carried out on a prototype of the precision fertilizer application machine using GPS precise spatial mapping for farm fields, and a precision weeder. In developing the crawler type autonomous vehicle, the obstacle detecting method, the communication system between the base station and the mobile station, and the specifications of the working machine were established. A yield sensor, soil sensing and pasture sensing were discussed, and a method for collecting information required for precise work was proposed. Market size for agricultural machines in Hokkaido was investigated, and trends in America were analyzed. (NEDO)

  14. Achievement report for fiscal 1998. Research and development project of regional consortiums (energy field in the regional consortiums / research and development of a precise autonomous operating system for large-scale farm use (the first year)); 1998 nendo chiiki consortium energy bun'ya. Daikibo nogyo muke seimitsu jiritsu soko sagyo shien system no kenkyu kaihatsu (dai 1 nendo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    A precise autonomous operating system is under development to commercialize new agricultural tractors that make possible the stable and safe food supply in Hokkaido in the future as the Japan's food base, and meet the regional needs. This paper describes the development achievements during fiscal 1998. A highly precise and robust automatic driving algorithm was developed by adopting RTK-GPS as a navigation sensor, optical fiber gyroscope and machine vision to have them perform active sensor fusion. Autonomous operation was possible with an error of about 15 cm at a speed as high as 3 m/s. Development and prototype fabrication were carried out on a prototype of the precision fertilizer application machine using GPS precise spatial mapping for farm fields, and a precision weeder. In developing the crawler type autonomous vehicle, the obstacle detecting method, the communication system between the base station and the mobile station, and the specifications of the working machine were established. A yield sensor, soil sensing and pasture sensing were discussed, and a method for collecting information required for precise work was proposed. Market size for agricultural machines in Hokkaido was investigated, and trends in America were analyzed. (NEDO)

  15. Thermodynamic Modeling of Poorly Complexing Metals in Concentrated Electrolyte Solutions: An X-Ray Absorption and UV-Vis Spectroscopic Study of Ni(II) in the NiCl2-MgCl2-H2O System

    Science.gov (United States)

    Zhang, Ning; Brugger, Joël; Etschmann, Barbara; Ngothai, Yung; Zeng, Dewen

    2015-01-01

    Knowledge of the structure and speciation of aqueous Ni(II)-chloride complexes is important for understanding Ni behavior in hydrometallurgical extraction. The effect of concentration on the first-shell structure of Ni(II) in aqueous NiCl2 and NiCl2-MgCl2 solutions was investigated by Ni K edge X-ray absorption (XAS) and UV-Vis spectroscopy at ambient conditions. Both techniques show that no large structural change (e.g., transition from octahedral to tetrahedral-like configuration) occurs. Both methods confirm that the Ni(II) aqua ion (with six coordinated water molecules at R Ni-O = 2.07(2) Å) is the dominant species over the whole NiCl2 concentration range. However, XANES, EXAFS and UV-Vis data show subtle changes at high salinity (> 2 mol∙kg-1 NiCl2), which are consistent with the formation of small amounts of the NiCl+ complex (up to 0.44(23) Cl at a Ni-Cl distance of 2.35(2) Å in 5.05 mol∙kg-1 NiCl2) in the pure NiCl2 solutions. At high Cl:Ni ratio in the NiCl2-MgCl2-H2O solutions, small amounts of [NiCl2]0 are also present. We developed a speciation-based mixed-solvent electrolyte (MSE) model to describe activity-composition relationships in NiCl2-MgCl2-H2O solutions, and at the same time predict Ni(II) speciation that is consistent with our XAS and UV-Vis data and with existing literature data up to the solubility limit, resolving a long-standing uncertainty about the role of chloride complexing in this system. PMID:25885410

  16. Performance of magnetoelectric PZT/Ni multiferroic system for energy harvesting application

    Science.gov (United States)

    Gupta, Reema; Tomar, Monika; Kumar, Ashok; Gupta, Vinay

    2017-03-01

    Magnetoelectric (ME) coefficient of Lead Zirconium Titanate (PZT) thin films has been probed for possible energy harvesting applications. Single phase PZT thin films have been deposited on nickel substrate (PZT/Ni) using pulsed laser deposition (PLD) technique. The effect of PLD process parameters on the ME coupling coefficient in the prepared systems has been investigated. The as grown PZT films on Ni substrate were found to be polycrystalline with improved ferroelectric and ferromagnetic properties. The electrical switching behavior of the PZT thin films were verified using capacitance voltage measurements, where well defined butterfly loops were obtained. The ME coupling coefficient was estimated to be in the range of 94.5 V cm-1 Oe-1-130.5 V cm-1 Oe-1 for PZT/Ni system, which is large enough for harnessing electromagnetic energy for subsequent applications.

  17. Effect of separated layer thickness on magnetoresistance and magnetic properties of Co/Dy/Co and Ni/Dy/Ni film systems

    Science.gov (United States)

    Shabelnyk, T. M.; Shutylieva, O. V.; Vorobiov, S. I.; Pazukha, I. M.; Chornous, A. M.

    2018-01-01

    Co(5 nm)/Dy(tDy)/Co(20 nm)/S and Ni(5 nm)/Dy(tDy)/Ni(20 nm)/S trilayer films are prepared by electron-beam sputtering to investigate the influence of dysprosium layer thickness (tDy) and thermal annealing on the crystal structure, magnetoresistance (MR) and magnetic properties of thin films. The thickness of Dy layer changed in the range from 1 nm to 20 nm. The samples annealed for 20 min at 700 K. Electron diffraction patterns reveal that the as-deposited and annealed systems Co/Dy/Co and Ni/Dy/Ni had fcc-Co + hcp-Dy and fcc-Ni + hcp-Dy phase state, respectively. It is also shown that at the tDy = 15 nm the transition from amorphous to crystalline structures of Dy layer is observed. An increase in the Dy layer thickness results in changes in the MR and magnetic properties of the trilayer systems. It is shown that MR is most thermally stable against annealing to 700 K at tDy = 15 nm for Co/Dy/Co as well as for Ni/Dy/Ni. For tDy = 15 nm the, value of MR for both system increases by two times compared to those of pure ferromagnetic (FM) samples. The coercivity (Bc), remanent (Mr) and saturation (Ms) magnetization of the in-plain magnetization hysteresis loops are related to the Dy layer thickness too. The coercivity depends on the FM materials type and diffusion processes at the layer boundary. Accordingly, Mr and Ms are reduced with tDy increasing before and after annealing for both trilayer systems.

  18. Report on results concerning development of supermetal technology, R and D of offshore oil production supporting system, and development of technology for aluminum-based high-anticorrosive microstructured metallic material (FY2000); Super metal no gijutsu kaihatsu seika hokokusho (2000 nendo). Kaitei sekiyu seisan shien system kenkyu kaihatsu (Aluminium kei kotaishokusei bisai kozo seigyo kinzoku zairyo gijutsu kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    With the purpose of developing high strength and high-anticorrosive aluminum-based material through microstructure control, R and D was conducted, with fiscal 2000 results compiled. In the research of grain refinement mechanism, molten metal rolled stock was experimentally produced in which Mg content was varied 0-2.5 mass % with Al-2.5 mass % Mn as its base. As a result, a microstructure with an average grain size of about 3 {mu}m was obtained by processing the alloy through homogenization at 550 degrees C, cold rolling by 91% and the final treatment at 350 degrees C without Mg addition. Addition of Mg increased square grain boundaries in the microstructure, raising proof stress to about 180 MPa in Al-2.5%Mn-2.5%Mg alloy. In the research of development of the machining process, a rapid heating process was performed on a typical aluminum alloy, with the effect examined, by an alloy system or a plate thickness, on the electric power used and on the temperature reached. A rapidly heated aluminum alloy plate turned to have a microstructure with equi-axed grains of a uniform size, compared with a salt bath processed material heated at the same temperature. (NEDO)

  19. Features of Pd-Ni-Fe solder system for vacuum brazing of low alloy steels

    International Nuclear Information System (INIS)

    Radzievskij, V.N.; Kurochko, R.S.; Lotsmanov, S.N.; Rymar', V.I.

    1975-01-01

    The brazing solder of the Pd-Ni-Fe alloyed with copper and lithium, in order to decrease the melting point and provide for a better spreading, when soldered in vacuum ensures a uniform strength of soldered joints with the base metal of low-alloyed steels of 34KHNIM-type. The properties of low-alloyed steel joints brazed with the Pd-Ni-Fe-system solder little depend on the changes in the soldering parameters. The soldered joint keeps a homogeneous structure after all the stages of heat treatment (annealing, quenching and tempering)

  20. Phase Equilibria in the Sn-Rich Corner of the Ni-Sb-Sn System

    Czech Academy of Sciences Publication Activity Database

    Mishra, R.; Kroupa, Aleš; Zemanová, Adéla; Ipser, H.

    2013-01-01

    Roč. 42, č. 4 (2013), s. 646-653 ISSN 0361-5235 Institutional support: RVO:68081723 Keywords : lead-free solder * high-temperature solder * Ni-Sb-Sn system Subject RIV: BJ - Thermodynamics Impact factor: 1.675, year: 2013

  1. Nuclear reactions of the system 6 Li on 58 Ni near the Coulomb barrier

    International Nuclear Information System (INIS)

    Lizcano, D.; Aguilera, E.F.; Garcia M, H.; Martinez Q, E.

    2004-01-01

    Protons, alpha particles and deuterons coming from the reactions 6 Li + 58 Ni are detected to three different energy around the Coulomb barrier. The possible effects of the weakly bound character of the projectile are studied and the results are compared with previous data for the system 6 Li + 59 Co. (Author)

  2. Reduction of , -Unsaturated Ketones Using a Zn/NiCl System in ...

    African Journals Online (AJOL)

    NJD

    Reduction of , -Unsaturated Ketones Using a Zn/NiCl. 2. System in Aqueous Media in the Presence of Anionic and. Cationic Surfactants. Hocine Ilikti*, Tayeb Benabdallah, Kamel Bentayeb, Adil A. Othman and Zoubir Derriche. Organic Chemistry and Electrochemistry Laboratory, Department of Chemistry, Faculty of Science, ...

  3. NI Based System for Seu Testing of Memory Chips for Avionics

    Directory of Open Access Journals (Sweden)

    Boruzdina Anna

    2016-01-01

    Full Text Available This paper presents the results of implementation of National Instrument based system for Single Event Upset testing of memory chips into neutron generator experimental facility, which used for SEU tests for avionics purposes. Basic SEU testing algorithm with error correction and constant errors detection is presented. The issues of radiation shielding of NI based system are discussed and solved. The examples of experimental results show the applicability of the presented system for SEU memory testing under neutrons influence.

  4. Study of mechanical-magnetic and electromagnetic properties of PZT/Ni film systems by a novel bulge technique

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Q.; Zhou, W.; Ding, J.; Xiao, M. [School of Materials Science and Engineering, Xiangtan University, Hunan 411105 (China); Key Laboratory of Film Materials and Devices of Science and Technology Department of Hunan Province, Xiangtan University, Hunan 411105 (China); Yu, Z.J.; Xu, H. [State Key Lab for Turbulence and Complex Systems, Peking University, Beijing 100871 (China); Mao, W.G., E-mail: ssamao@126.com [School of Materials Science and Engineering, Xiangtan University, Hunan 411105 (China); Key Laboratory of Film Materials and Devices of Science and Technology Department of Hunan Province, Xiangtan University, Hunan 411105 (China); Pei, Y.M.; Li, F.X. [State Key Lab for Turbulence and Complex Systems, Peking University, Beijing 100871 (China); Feng, X. [AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084 (China); Fang, D.N., E-mail: fangdn@pku.edu.cn [State Key Lab for Turbulence and Complex Systems, Peking University, Beijing 100871 (China); Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081 (China)

    2017-02-01

    A novel multiple functional bulge apparatus was designed to study the mechanical-electronic-magnetic characteristics of electromagnetic materials. The elastic modulus difference effect of Ni thin film was observed and it was about 22.16% in the demagnetized and magnetization saturated states. The mechanical-magnetic behaviors of Ni and lead-titanate zirconate (PZT)/Ni films were in-situ measured by using the new bulge systems, respectively. The evolutions of three key material properties in hysteresis loop including saturation magnetization, remanent magnetization and coercive field were discussed in detail, respectively. The mechanisms of mechanical-magnetic coupled behaviors of Ni and PZT/Ni films were analyzed with the aid of the competitive relationship of stress and magnetization. Similarly, the electronic-magnetic characteristics of PZT/Ni films were in-situ measured by using this experimental system. The evolution of saturated magnetization, remanent magnetization and coercive field Kerr signals were discussed with the magneto-elastic anisotropy energy point. In this paper, a suitable mechanical-electronic-magnetic bulge measurement system was established, which would provide a good choice for further understanding the multi field coupling characteristics of electromagnetic film materials. - Highlights: • A novel bulge apparatus was designed to study electromagnetic materials. • The mechanical-magnetic features of Ni film were studied by this new apparatus. • The ΔE effect of Ni film was observed and analyzed. • The mechanical electronic-magnetic characteristics of PZT/Ni film were discussed.

  5. Fiscal 1998 survey report. Medical equipment (Development of fine sampling/analysis system for blood / Development of high-precision 3-D image diagnosis system / Development of low-invasion operation support system / Total development of artificial internal organ technologies); 1998 nendo chosa hokokusho. Iryo kiki (ketsuekinado biryo saishu, biryo bunseki system kaihatsu/koseido sanjigen eizo shindan system kaihatsu/teishinshu shujutsu shien system kaihatsu/jinko zoki gijutsu sogo kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    For efficient medical care supply systems, the R and D of advanced medical care technology and equipment largely contribute to productivity improvement for medical care services. Among them, a progress of medical care technology is becoming important for preparation of efficient and fair supply systems. MITI thus established 'Medical care and welfare equipment development project' in 1994, and has promoted the strategic long-term R and D project of medical care and welfare equipment as joint R and D project of NEDO and private enterprises. In fiscal 1998, on the development of the fine sampling/analysis system for blood, the high- precision 3-D image diagnosis system, the low-invasion operation support system, and the artificial internal organ technologies since fiscal 1996, this project clarified essential technical issues based on the future view, selected some themes to be newly developed in the future, and surveyed and evaluated the details of their R and D concretely. (NEDO)

  6. A study on the equilibrium relationships in the system Ni-U-O in air and in oxygen

    International Nuclear Information System (INIS)

    Elmasry, M.A.A.; Younis, S.S.

    1996-01-01

    The phase relationships for the ternary system Ni-U-O were established in air and in oxygen. Mixtures of Ni O and U 3 O 8 were found to oxidize to Ni U O 4 that was identical to that previously published for Ni U 3 O 1 0. The nickel uranate dissociates to Ni O, U 3 O 8 and oxygen at a temperature higher than that of the oxidation. The dissociation products go back to the uranate when they are cooled because of the difficulty of oxygen diffusion and uranate nucleation. Accordingly dissociation temperature. 966 degree C was taken to represent equilibrium and was used to calculate roughly H and S for the dissociation reaction. In presence of Ni O, U 3 O 8 melts partially at 1470 degree C and does not dissociate to the lower oxide. 4 figs

  7. Alloying effect on hardening of martensite stainless steels of the Fe-Cr-Ni and Fe-Cr-Co systems

    International Nuclear Information System (INIS)

    Fel'dgandler, Eh.G.; Savkina, L.Ya.

    1975-01-01

    The effect of alloying elements is considered on the γ → a-transformation and hardening of certain compositions of the ternary Fe-Cr-Ni- and Fe-Cr-Co alloy systems with the martensite structure. In martensite Fe-(10 to 14)% Cr base steels the elements Co, Cu, W, Ni, Mo, Si, Cr decrease, Mn, Si, Mo, Cu increase, and Cr, Ni, Co decrease the temperature of α → γ-transition. The tempering of martensite steels of the Fe-Cr-Ni- and Fe-Cr-Co-systems containing 10 to 14% Cr, 4 to 9% Ni, and 7 to 12% Co does not lead to hardening. Alloyage of the martensite Fe-Cr-Ni-, Fe-Cr-Co- and Fe-Cr-Ni-Co base separately with Mo, W, Si or Cu leads to a hardening during tempering, the hardening being the higher, the higher is the content of Ni and, especially, of Co. The increase in the content of Mo or Si produces the same effect as the increase in the Co content. In on Fe-Cr-Co or Fe-Cr-Ni-Co based steels alloyed with Mo or Si, two temperature ranges of ageing have been revealed which, evidently, have different hardening natures. The compositions studied could serve as the base material for producing maraging stainless steels having a complex variety of properties

  8. System approach on solar hydrogen generation and the gas utilization; Taiyo energy ni yoru suiso no seisei oyobi sono riyo system ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Fujii, I; Hirooka, N; Deguchi, Y; Narita, D [Meiji University, Tokyo (Japan)

    1997-11-25

    An apparatus is developed to establish a system which allows utilization of hydrogen safely and easily, and its applicability to a hydrogen system for domestic purposes is tested. The system converts solar energy by the photovoltaic cell unit into power, which is used to generate hydrogen by electrolysis of water at the hydrogen generator, stores hydrogen in a metal hydride , and sends stored hydrogen to the burner and fuel cell units. It is found that a hydrogen occluding alloy of LaNi4.8Al0.2 stores hydrogen to approximately 80% when cooled to 20 to 25degC, and releases it to 10% when heated to 40degC. The fuel cell uses a solid polymer as the electrolyte. The hydrogen gas burner is a catalytic combustion burner with a Pt catalyst carried by expanded Ni-Al alloy. The optimum distance between the burner and object to be heated is 22mm. High safety and fabrication simplicity are confirmed for use for domestic purposes. The system characteristics will be further investigated. 4 refs., 8 figs.

  9. Effects of Ni(2+) on aluminum hydroxide scale formation and transformation on a simulated drinking water distribution system.

    Science.gov (United States)

    Wang, Wendong; Song, Shan; Zhang, Xiaoni; Mitchell Spear, J; Wang, Xiaochang; Wang, Wen; Ding, Zhenzhen; Qiao, Zixia

    2014-07-01

    Observations of aluminum containing sediments/scales formed within the distribution pipes have been reported for several decades. In this study, the effect of Ni(2+) on the formation and transformation processes of aluminum hydroxide sediment in a simulated drinking water distribution system were investigated using X-ray diffraction spectrum (XRD), Fourier transform infrared spectrum (FT-IR), scanning electron microscope (SEM), and thermodynamic calculation methods. It was determined that the existence of Ni(2+) had notable effects on the formation of bayerite. In the system without Ni(2+) addition, there was no X-ray diffraction signal observed after 400 d of aging. The presence of Ni(2+), however, even when present in small amounts (Ni/Al=1:100) the formation of bayerite would occur in as little as 3d at pH 8.5. As the molar ratio of Ni/Al increase from 1:100 to 1:10, the amount of bayerite formed on the pipeline increased further; meanwhile, the specific area of the pipe scale decreased from 160 to 122 m(2)g(-1). In the system with Ni/Al molar ratio at 1:3, the diffraction spectrum strength of bayerite became weaker, and disappeared when Ni/Al molar ratios increased above 1:1. At these highs Ni/Al molar ratios, Ni5Al4O11⋅18H2O was determined to be the major component of the pipe scale. Further study indicated that the presence of Ni(2+) promoted the formation of bayerite and Ni5Al4O11⋅18H2O under basic conditions. At lower pH (6.5) however, the existence of Ni(2+) had little effect on the formation of bayerite and Ni5Al4O11⋅18H2O, rather the adsorption of amorphous Al(OH)3 for Ni(2+) promoted the formation of crystal Ni(OH)2. Copyright © 2013 Elsevier Ltd. All rights reserved.

  10. Potential of 57Ni/57Co generator system for radiolabelling proteins for imaging

    International Nuclear Information System (INIS)

    Du, T.; Smith, S.V.; Baker, T.

    1998-01-01

    Full text: There is increasing interest in the use of inert metal complexes for radiolabelling proteins. The present study involves an investigation into the use to the parent/daughter system 57 Ni/ 57 Co for PET and SPECT imaging. In order to assess the potential of the system for such applications it is important to examine whether the ligand chosen complexes with both 57 Ni and 57 Co. A selection of ligands with varying number of donor groups and open-chain and macrocyclic ligands were chosen; ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), 1,4,8,11 - tetraazocyclotetradecane-1 4,8,11-tetraacetic acid (TETA) and diaminohydroxyaryl - diethylenetriaminepentaacetic acid, (DAHA-EDTA). Complexation behaviour over a range of pH and temperatures was investigated. Results show that the ligands have strong complexation for 57 Ni however once 57 Ni decayed to 57 Co evidence ol chemical instability was noted. The DAHA-EDTA ligand (developed in house) was observed to be the most stable under conditions studied. lt was selected for use in radiolabelling B72.3 antibody and preliminary radiolabelling conditions were established

  11. Composition dependency of the glass forming ability (GFA) in Mg-Ni-Si system by mechanical alloying

    International Nuclear Information System (INIS)

    Xie Haowen; Lin Jianguo; Li Yuncang; Hodgson, Peter D.; Wen Cuie

    2007-01-01

    The pure elemental powder mixtures with the compositions of Mg 65 Ni x Si 35-x (x = 10, 20, 25, 33 at.%) were subject to high-energy ball mill, and the structures of the mixtures at different intervals of milling were characterised by X-ray diffraction (XRD). The compositional dependency of the glass forming ability (GFA) in Mg-Ni-Si system was evaluated based on the experimental results and the theoretical calculation. The compositional dependency of GFA in Mg-Ni-Si system can be understood well by comparing the enthalpies of the crystalline and amorphous phases based on the Miedema's theory for the formation enthalpy of alloys. Increasing the Ni/Mg ratio and/or decreasing Si content can improve the amorphous formability. The calculation results might be of great help in optimising the composition with high GFA in Mg-Ni-Si system

  12. Interfacial reactions in the Sb–Sn/(Cu, Ni) systems: Wetting experiments

    International Nuclear Information System (INIS)

    Novakovic, R.; Lanata, T.; Delsante, S.; Borzone, G.

    2012-01-01

    Interfacial reactions in the Sb–Sn/Cu and Sb–Sn/Ni systems have been investigated by means of wetting experiments. The wetting behaviour of two lead-free alloys, namely, Sb 2.5 Sn 97.5 and Sb 14.5 Sn 85.5 (at.%), in contact with Cu and Ni-substrates has been studied in view of possible applications as high-temperature solders in the electronics industry. The contact angle measurements on Cu and Ni plates were performed by using a sessile drop apparatus. The solder/substrate interface was characterised by the SEM-EDS analyses. -- Highlights: ► Sb–Sn alloys are used as high temperature lead-free solders. ► Sb–Sn alloys have good wetting properties on Cu and Ni substrates. ► Interfacial reactions and products are important for joint properties. ► Interfacial reactions/products data can be used to study the phase diagrams.

  13. A comprehensive study on photocatalytic activity of supported Ni/Pb sulfide and oxide systems onto natural zeolite nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Babaahamdi-Milani, Majid [Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan (Iran, Islamic Republic of); Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza (Iran, Islamic Republic of); Nezamzadeh-Ejhieh, Alireza, E-mail: arnezamzadeh@iaush.ac.ir [Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan (Iran, Islamic Republic of); Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza (Iran, Islamic Republic of); Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan (Iran, Islamic Republic of)

    2016-11-15

    Highlights: • Increase in photocatalytic activity of hybridized/supported PbO/NiO and PbS/NiS systems with respect to semiconductors alone. • Higher efficiency of PbO/NiO than PbS/NiS. • Positive role of p-n junction for enhancement of photocatalytic activity of the used semiconductors. - Abstract: The Ni(II)-Pb(II) exchanged clinoptilolite nanoparticles (NCP) were transformed to corresponding oxides and sulfides via calcination and sulfiding processes, respectively. The obtained catalysts were characterized by XRD, FT-IR, TEM and DRS and used in photodegradation of p-nitrophenol (4-NP) aqueous solution under Hg-lamp irradiation. Results showed considerable increase in activity of the coupled semiconductors with respect to monocomponent one. In NiO-PbO-NCP system, conduction band (CB) of NiO is enough negative for easily migration of photogenerated electrons to CB-PbO level, while such phenomena take place from more negative CB-PbS level to CB-NiS level in NiS-PbS-NCP. These phenomena significantly prevented from electron-hole recombination which increased photocatalytic activity of the coupled semiconductors. Best photodegradation activities obtained by NiO{sub 1.3%}–PbO{sub 14.7%}-NCP and NiS{sub 2.1%}–PbS{sub 10.0%}-NCP, confirming semiconductors' mass-ratio dependence of the photocatalytic process. The supported coupled semiconductors showed blue shifts in band gap energies with respect to the bulk semiconductors which confirm formation of semiconductors nanoparticles inside the zeolite framework. The highest degradation percentage of 4-NP was obtained at: 0.5 g L{sup −1} photocatalysts, 15 mg L{sup −1} 4-NP at pH 7.5.

  14. Highly efficient removal of chromium(VI) by Fe/Ni bimetallic nanoparticles in an ultrasound-assisted system.

    Science.gov (United States)

    Zhou, Xiaobin; Jing, Guohua; Lv, Bihong; Zhou, Zuoming; Zhu, Runliang

    2016-10-01

    Highly active Fe/Ni bimetallic nanocomposites were prepared by using the liquid-phase reduction method, and they were proven to be effective for Cr(VI) removal coupled with US irradiation. The US-assisted Fe/Ni bimetallic system could maintain a good performance for Cr(VI) removal at a wide pH range of 3-9. Based on the characterization of the Fe/Ni nanoparticles before and after reaction, the high efficiency of the mixed system could attribute to the synergistic effects of the catalysis of Ni(0) and US cavitation. Ni(0) could facilitate the Cr(VI) reduction through electron transfer and catalytic hydrogenation. Meanwhile, US could fluidize the Fe/Ni nanoparticles to increase the actual reactive surface area and clean off the co-precipitated Fe(III)-Cr(III) hydroxides to maintain the active sites on the surface of the Fe/Ni nanoparticles. Thus, compared with shaking, the US-assisted Fe/Ni system was more efficient on Cr(VI) removal, which achieved 94.7% removal efficiency of Cr(VI) within 10 min. The pseudo-first-order rate constant (kobs) in US-assisted Fe/Ni system (0.5075 min(-1)) was over 5 times higher than that under shaking (0.0972 min(-1)). Moreover, the Fe/Ni nanoparticles still have a good performance under US irradiation after 26 days aging as well as regeneration. Copyright © 2016 Elsevier Ltd. All rights reserved.

  15. Welding of heterogeneous 12Kh2MFSR steels with the Mn-Cr-Si-Ni system

    International Nuclear Information System (INIS)

    Smirnov, A.N.; Belogolov, E.I.

    1978-01-01

    The process of welding pipes of the 12Kh2MFSR pearlitic steels and austenitic steels of the Mn-Cr-Si-Ni system was studied. The filler materials were selected, and the working capacity of welded joints was examined in ageing and cyclic heatings. The microhardness of steels was measured, and the ultimate strength of welded joints was determined. The following has been established: the composite joints of steels of the Mn-Cr-Si-Ni system and 12Kh2MFSR steel are advisable to be welded on a coating layer welded by the EhA395/9 electrodes on the surface of a pipe of the 12Kh2MFSR pearlitic steel; this guarantees the sufficient working capacity of welded joints

  16. Thermodynamic properties over (Ni{sub 2}Te{sub 3}O{sub 8} + NiTe{sub 2}O{sub 5}) in the Ni-Te-O system. Transpiration thermogravimetric and Knudsen effusion mass spectrometric studies

    Energy Technology Data Exchange (ETDEWEB)

    Narasimhan, Tiruppatur Subramaniam Lakshmi; Nalini, Seshadreesan; Manikandan, Palraj; Trinadh, Vinjavarapu Venkata [Indira Gandhi Centre for Atomic Research, Kalpakkam (India). Fuel Chemistry Div.; Baba, Magapu Sai [Indira Gandhi Centre for Atomic Research, Kalpakkam (India). Resources Management Group

    2016-02-15

    Vaporisation studies over (Ni{sub 2}Te{sub 3}O{sub 8} + NiTe{sub 2}O{sub 5}) in the Ni-Te-O system were carried out by means of transpiration thermogravimetry (TTG) and Knudsen effusion mass spectrometry (KEMS) in the temperature ranges of 950 - 1 060 K and 850 - 950 K respectively. The transpiration measurements were performed for the first time. Comparison of total pressures obtained by TTG with that deduced using partial pressures of vaporising species from KEMS showed a good agreement providing reliable vapour pressures over this phase region. From vapour pressures, enthalpies of solid-gas and gas-phase equilibria and subsequently enthalpy and Gibbs free energies of formation of NiTe{sub 2}O{sub 5}(s) were derived. A thermochemical calculation was performed to assess the possibility of formation of the ternary NiTe{sub 2}O{sub 5}(s) phase on stainless steel clad of mixed-oxide fuelled fast breeder nuclear reactors.

  17. Thermochemical and phase diagram studies of the Sn-Zn-Ni system

    International Nuclear Information System (INIS)

    Gandova, V.D.; Broz, P.; Bursik, J.; Vassilev, G.P.

    2011-01-01

    Highlights: → Sn-Zn-Ni phase diagram in the vicinity of the Sn-Zn system. → Unidentified compositions (UX1-UX4) are repeatedly observed. → This indicates up to 6 ternary compounds in the system. → A ternary eutectic reaction at around 190 o C is found. - Abstract: The phase diagram Sn-Zn-Ni was studied by means of DSC and electron microprobe analysis. The samples were positioned in three isopleth sections with nickel contents of 0.04 (section 1), 0.08 (section 2) and 0.12 (section 3) mole fractions. The mole fractions of Sn corresponding to the particular sections were as follows: from 0.230 to 0.768 (section 1), from 0.230 to 0.736 (section 2); from 0.220 to 0.704 (section 3). Mixtures of pure metals were sealed under vacuum in quartz ampoules and annealed at 350 o C. The solid phases identified in the samples were: γ-(i.e. Ni 5 Zn 21 ), (Zn) and the ternary phase T1. Unidentified compositions were observed. One of them: UX1 (X Ni = 0.071 ± 0.005, X Sn = 0.439 ± 0.009 and X Zn = 0.490 ± 0.010) might indicate another (stable or metastable) ternary compound (T3) in the system Sn-Zn-Ni. Considering the data obtained by combining DSC with microstructure observations, the studied alloys could be divided in two groups (A and B). A ternary eutectic reaction at around 190 o C is common for the A-group alloys. The phases taking part in this reaction are, probably, Ni 5 Zn 21 , (Zn), (βSn) and liquid. B-group samples do not show ternary eutectic reaction and are also characterized by the presence of the ternary compound T1 (absent in the A-group alloys). Four other groups of thermal arrests were registered (TA 1 -TA 4 ). It was found that TA 2 peaks were characteristic for most of the A-group samples, while TA 1 peaks were registered with all B-group samples.

  18. Corrosion at system chimneys made of CrNi-steels

    Energy Technology Data Exchange (ETDEWEB)

    Pajonk, Gunther [Institute of Materials Testing of Northrhine-Westfalia, D-44285 Dortmund (Germany)

    2004-07-01

    Names like 'chimney' und 'funnel' usually identify flue gas devices made of bricks. Much less known is the fact that chimney elements are still manufactured from alloys. The following article describes the particular demands ruled by legislation on building pro-ducts, just as the consequences resulting from corrosion loads by flue gas condensates. Difficulties caused by manufacturing and construction are primarily discussed. Furthermore a test procedure is introduced that allows to catch and correlate corrosion loads and technical designs systematically to corrosion behaviour and service life of flue gas devices. For the first time a tool for active quality assurance has been given by this test rig allowing to recognize construction errors systematically. This way, manufacturers of system chimneys and flue liners are enabled to optimize their products applications going ahead to the respective requests of the market. (authors)

  19. Transport properties of the LiNi{sub 1-y}Co{sub y}O{sub 2} system

    Energy Technology Data Exchange (ETDEWEB)

    Molenda, J.; Wilk, P.; Marzec, J. [Department of Solid State Chemistry, Stanislaw Staszic University of Mining and Metallurgy, Al. A. Mickiewicza 30, 30-059 Cracow (Poland)

    1999-04-15

    In this paper results are presented concerning structure, electrical conductivity and thermoelectric power measurements of the LiNi{sub 1-y}Co{sub y}O{sub 2} system. It has been stated that holes are dominating carriers. It has been also found that cobalt worsens the transport properties of the LiNi{sub 1-y}Co{sub y}O{sub 2} system

  20. Elastic scattering and total reaction cross section for the 6He +58Ni system

    Science.gov (United States)

    Morcelle, V.; Lichtenthäler, R.; Lépine-Szily, A.; Guimarães, V.; Mendes, D. R., Jr.; Pires, K. C. C.; de Faria, P. N.; Barioni, A.; Gasques, L.; Morais, M. C.; Shorto, J. M. B.; Zamora, J. C.; Scarduelli, V.; Condori, R. Pampa; Leistenschneider, E.

    2014-11-01

    Elastic scattering measurements of 6He + 58Ni system have been performed at the laboratory energy of 21.7 MeV. The 6He secondary beam was produced by a transfer reaction 9Be (7Li , 6He ) and impinged on 58Ni and 197Au targets, using the Radioactive Ion Beam (RIB) facility, RIBRAS, installed in the Pelletron Laboratory of the Institute of Physics of the University of São Paulo, Brazil. The elastic angular distribution was obtained in the angular range from 15° to 80° in the center of mass frame. Optical model calculations have been performed using a hybrid potential to fit the experimental data. The total reaction cross section was derived.

  1. Research report of FY 1997 on the environmentally acceptable coal utilization system introduction support project. Demonstration project on simplified desulfurizers; 1997 nendo seika hokokusho. Kankyo chowagata sekitan riyo system donyu shien jigyo (kan`i datsuryu setsubi ni kakawaru jissho jigyo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    To reduce SOx with coal utilization, a desulfurizer is introduced in Thailand as diffusion activities in the demonstration program. The purpose is to reduce the environmental pollutants. For this desulfurizer, lime mud mainly composed of lime stone is used as an absorber. SO2 in the flue gas is absorbed by the slurry of lime mud, to form calcium sulfite. The calcium sulfite blown in the bottom of recycling tank is oxidized by oxygen in the air, to form gypsum. The gypsum is recovered as a by-product. In this fiscal year, a feeder of lime stone, spray nozzles, and various analysis apparatuses were supplied. Supervisors for electric instrumentation/control were also dispatched as well as for main body construction, to carry out the instrumentation setting works, check of sequences, and adjustment of apparatuses. After the test operation, supervisors for the demonstration operation were dispatched up to March 1998, to conduct the cooperation works between Japan and Thailand sides. Thus, successful and successive demonstration operation was confirmed. 21 figs., 6 tabs.

  2. Research report of FY 1997 on the environmentally acceptable coal utilization system introduction support project. Follow-up project on circulating fluidized bed boiler introduction (Calaca Batangas Thermal Power Station); 1997 nendo chosa hokokusho. Kankyo chowagata sekitan riyo system donyu shien jigyo (junkan ryudosho boiler ni kakawaru follow up jigyo (Calaca Batangas karyoku hatsudensho))

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    For the follow-up project, to promote the diffusion of results of the clean coal technology (CCT) model projects, experts of circulating fluidized bed boilers were dispatched, to guide and advise for the operation of facilities introduced in these projects. The purpose of these projects is to diffuse the CCTs, and to support the promotion of environmental measures. Some guidance and advice about operation processes, data processing, operation regulation, maintenance, and boiler maintenance works were provided to the Ministry of Energy and Electric Power Corporation of the Philippines. Semirara, Malangas, and Samar coals in the Philippines were used for the tests. The boiler facilities could be operated by Philippine operators themselves. Based on the guidance and advice about operation processes, combustion tests using various Philippine coals were also planned and conducted by themselves. The maintenance techniques were transferred to Philippine operators through the inspection, repair and advice. The Philippine side understood the technologies well, and the circulating fluidized bed boiler technology was independently educated in the Philippines. 23 figs., 16 tabs.

  3. NiCoBP-doped carbon nanotube hybrid: A novel oxidase mimetic system for highly efficient electrochemical immunoassay

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Bing; He, Yu; Liu, Bingqian; Tang, Dianping, E-mail: dianping.tang@fzu.edu.cn

    2014-12-03

    Highlights: • We report a new oxidase mimetic system for highly efficient electrochemical immunoassay. • NiCoBP-doped carbon nanotube hybrids were used as the nanocatalysts. • NiCoBP-doped carbon nanotube hybrids were used as the mimic oxidase. - Abstract: NiCoBP-doped multi-walled carbon nanotube (NiCoBP–MWCNT) was first synthesized by using induced electroless-plating method and functionalized with the biomolecules for highly efficient electrochemical immunoassay of prostate-specific antigen (PSA, used as a model analyte). We discovered that the as-synthesized NiCoBP–MWCNT had the ability to catalyze the glucose oxidization with a stable and well-defined redox peak. The catalytic current increased with the increment of the immobilized NiCoBP–MWCNT on the electrode. Transmission electron microscope (TEM) and energy dispersive X-ray spectrometry (EDX) were employed to characterize the as-prepared NiCoBP–MWCNT. Using the NiCoBP–MWCNT-conjugated anti-PSA antibody as the signal-transduction tag, a new enzyme-free electrochemical immunoassay protocol could be designed for the detection of target PSA on the capture antibody-functionalized immunosensing interface. Experimental results revealed that the designed immunoassay system could exhibit good electrochemical responses toward target PSA, and allowed the detection of PSA at a concentration as low as 0.035 ng mL{sup −1}. More importantly, the NiCoBP-MWCNT-based oxidase mimetic system could be further extended for the monitoring of other low-abundance proteins or disease-related biomarkers by tuning the target antibody.

  4. Phase relationships of the system Fe-Ni-S and structure of the high-pressure phase of (Fe1-xNix)3S2

    Science.gov (United States)

    Urakawa, Satoru; Kamuro, Ryota; Suzuki, Akio; Kikegawa, Takumi

    2018-04-01

    The phase relationships of the Fe-Ni-S system at 15 GPa were studied by high pressure quench experiments. The stability fields of (Fe,Ni)3S and (Fe,Ni)3S2 and the melting relationships of the Fe-Ni-S system were determined as a function of Ni content. The (Fe,Ni)3S solid solution is stable in the composition of Ni/(Fe + Ni) > 0.7 and melts incongruently into an Fe-Ni alloy + liquid. The (Fe,Ni)3S2 makes a complete solid solution and melts incongruently into (Fe,Ni)S + liquid, whose structure was determined to show Cmcm-orthorhombic symmetry by in situ synchrotron X-ray diffraction experiments. The eutectic contains about 30 at.% of S, and its temperature decreases with increasing Ni content with a rate of ∼5 K/at.% from 1175 K. The density of the Fe-FeS eutectic composition (Fe70S30) liquid is evaluated to be 6.93 ± 0.08 g/cm3 at 15 GPa and 1200 K based on the Clausius-Clapeyron relations and densities of subsolidus phases. The Fe-Ni-S liquids are a primary sulfur-bearing phase in the deep mantle with a reducing condition (250-660 km depth), and they would play a significant role in the carbon cycle as a carbon host as well as in the generation of diamond.

  5. A binomial truncation function proposed for the second-moment approximation of tight-binding potential and application in the ternary Ni-Hf-Ti system

    International Nuclear Information System (INIS)

    Li, J H; Dai, X D; Wang, T L; Liu, B X

    2007-01-01

    We propose a two-parameter binomial truncation function for the second-moment approximation of the tight-binding (TB-SMA) interatomic potential and illustrate in detail the procedure of constructing the potentials for binary and ternary transition metal systems. For the ternary Ni-Hf-Ti system, the lattice constants, cohesion energies, elastic constants and bulk moduli of six binary compounds, i.e. L1 2 Ni 3 Hf, NiHf 3 , Ni 3 Ti, NiTi 3 , Hf 3 Ti and HfTi 3 , are firstly acquired by ab initio calculations and then employed to derive the binomial-truncated TB-SMA Ni-Hf-Ti potential. Applying the ab initio derived Ni-Hf-Ti potential, the lattice constants, cohesive energy, elastic constants and bulk moduli of another six binary compounds, i.e. D0 3 NiHf 3 , NiTi 3 HfTi 3 , and B2 NiHf, NiTi, HfTi, and two ternary compounds, i.e. C1 b NiHfTi, L2 1 Ni 2 HfTi, are calculated, respectively. It is found that, for the eight binary compounds studied, the calculated lattice constants and cohesion energies are in excellent agreement with those directly acquired from ab initio calculations and that the elastic constants and bulk moduli calculated from the potential are also qualitatively consistent with the results from ab initio calculations

  6. Magnetic motion capture system using LC resonant magnetic marker composed of Ni-Zn ferrite core

    International Nuclear Information System (INIS)

    Hashi, S.; Toyoda, M.; Ohya, M.; Okazaki, Y.; Yabukami, S.; Ishiyama, K.; Arai, K. I.

    2006-01-01

    We have proposed a magnetic motion capture system using an LC resonant magnetic marker. The proposed system is composed of an exciting coil, an LC marker, and a 5x5-matrix search coil array (25 search coils). The LC marker is small and has a minimal circuit with no battery and can be driven wirelessly by the action of electromagnetic induction. It consists of a Ni-Zn ferrite core (3 mmφx10 mm) with a wound coil and a chip capacitor, forming an LC series circuit with a resonant frequency of 186 kHz. The relative position accuracy of the system is less than 1 mm within the area of 100 mm 3 up to 150 mm from the search coil array. Compared with dc magnetic systems, the proposed system is applicable for precision motion capture in optically isolated spaces without magnetic shielding because the system is not greatly influenced by earth field noise

  7. Determination of γ′+γ / γ Phase Boundary in Ni-Al-Cr System Using DTA Thermal Analysis

    Directory of Open Access Journals (Sweden)

    Maciąg T.

    2016-03-01

    Full Text Available Mechanical properties at elevated temperature, in modern alloys based on intermetallic phase Ni3Al are connected with phase composition, especially with proportion of ordered phase γ′ (L12 and disordered phase γ (A1. In this paper, analysis of one key systems for mentioned alloys - Ni-Al-Cr, is presented. A series of alloys with chemical composition originated from Ni-rich part of Ni-Al-Cr system was prepared. DTA thermal analysis was performed on all samples. Based on shape of obtained curves, characteristic for continuous order-disorder transition, places of course of phase boundaries γ′+γ / γ were determined. Moreover, temperature of melting and freezing of alloys were obtained. Results of DTA analysis concerning phase boundary γ′+γ / γ indicated agreement with results obtained by authors using calorimetric solution method.

  8. One-Pot Synthesis of Size- and Composition-Controlled Ni-Rich NiPt Alloy Nanoparticles in a Reverse Microemulsion System and Their Application

    KAUST Repository

    Biausque, Gregory

    2017-08-16

    Bimetallic nanoparticles have been the subject of numerous research studies in the nanotechnology field, in particular for catalytic applications. Control of the size, morphology, and composition has become a key challenge due to the relationship between these parameters and the catalytic behavior of the particles in terms of activity, selectivity, and stability. Here, we present a one-pot air synthesis of 2 nm NiPt nanoparticles with a narrow size distribution. Control of the size and composition of the alloy particles is achieved at ambient temperature, in the aqueous phase, by the simultaneous reduction of nickel and platinum precursors with hydrazine, using a reverse microemulsion system. After deposition on an alumina support, this Ni-rich nanoalloy exhibits unprecedented stability under the harsh conditions of methane dry reforming.

  9. One-Pot Synthesis of Size- and Composition-Controlled Ni-Rich NiPt Alloy Nanoparticles in a Reverse Microemulsion System and Their Application

    KAUST Repository

    Biausque, Gregory; Laveille, Paco; Anjum, Dalaver H.; Zhang, Bei; Zhang, Xixiang; Caps, Valerie; Basset, Jean-Marie

    2017-01-01

    Bimetallic nanoparticles have been the subject of numerous research studies in the nanotechnology field, in particular for catalytic applications. Control of the size, morphology, and composition has become a key challenge due to the relationship between these parameters and the catalytic behavior of the particles in terms of activity, selectivity, and stability. Here, we present a one-pot air synthesis of 2 nm NiPt nanoparticles with a narrow size distribution. Control of the size and composition of the alloy particles is achieved at ambient temperature, in the aqueous phase, by the simultaneous reduction of nickel and platinum precursors with hydrazine, using a reverse microemulsion system. After deposition on an alumina support, this Ni-rich nanoalloy exhibits unprecedented stability under the harsh conditions of methane dry reforming.

  10. Coarsening kinetics of γ' precipitates in the Ni-Al-Mo system

    International Nuclear Information System (INIS)

    Wang Tao; Sheng Guang; Liu Zikui; Chen Longqing

    2008-01-01

    The effect of Mo on the microstructure evolution and coarsening kinetics of γ' precipitates in the Ni-Al-Mo system is studied using phase-field simulations with inputs from thermodynamic, kinetic and lattice parameter databases. For alloys of different compositions, the precipitate morphology and the statistical information of precipitate sizes are predicted as a function of annealing time. It is observed that increasing Mo content leads to a change of the precipitate morphology from being cuboidal to spherical as well as a reduction in the coarsening rate. Comparison between simulated results and existing experimental microstructure morphologies and coarsening rates shows good agreements

  11. 57Fe Moessbauer studies on Ni-Mo system in the critical region

    International Nuclear Information System (INIS)

    Das, D.; Chintalapudi, S.N.; Mukhopadhyay, P.K.; Mookerjee, A.; Mukherjee, G.D.

    2001-01-01

    Disordered magnetic system NiMo is investigated in the critical region (Mo concentration 10 and 11 wt %) using Moessbauer spectroscopy as a local probe. 57 Co activity has been diffused in the alloy and is used at the source while stainless steel is used as standard absorber. Moessbauer spectrum of the alloy showed a sharp singlet at room temperature which indicates that 57 Co atoms have gone to the substitutional site. Below 200 K, Moessbauer spectra indicate complicated hyperfine interactions and more than one magnetic phase in the samples. Moessbauer results are corroborated by ac susceptibility, resistivity and positron annihilation Doppler broadening measurements. (author)

  12. FY 1999 report on the potential survey of the environmentally friendly type coal utilization system - Dispatch of engineers. A. Project for supporting the introduction of the environmentally friendly type coal utilization system (model project)/pre-survey for the potential survey; 1999 nendo kankyo chowa gata sekitan riyo system kanosei chosa. Senmomka haken A. kankyo chowa gata sekitan riyo system donyu shien jigyo (model jigyo) - Kanosei chosa no jizen chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    For the purpose of the improvement of coal utilization technology and environmental preservation, the paper conducted the pre-survey of the introduction of coke oven gas desulfurization facilities in China and pre-survey of potentiality of the environmentally friendly type coal utilization system in India. The pre-survey in China was made for Anyang Steel Group Co. Ltd. and Laiwu Steel Group Co. Ltd. to judge their adaptability as site for the demonstrative project on the introduction of coke oven gas desulfurization facilities. As a result, it was confirmed that the former satisfied the conditions on Japan side such as the space for installation and prospect for fund raising. However, the amount of COG treatment was larger than that planned at Japan side, and it was found that as to the recovered sulfur, the company wanted the solid sulfur different from the fused sulfur planned at Japan side. In the survey in India, explanations were made to India of CFBC and the fluidized bed cement sintering system, bio-briquette production facilities, facilities for environmental measures, coal reforming technology, etc. At the same time, the site survey was made to examine/analyze possibilities of spread/development of Japan's CCT. (NEDO)

  13. Characterization of NiTi Shape Memory Damping Elements designed for Automotive Safety Systems

    Science.gov (United States)

    Strittmatter, Joachim; Clipa, Victor; Gheorghita, Viorel; Gümpel, Paul

    2014-07-01

    Actuator elements made of NiTi shape memory material are more and more known in industry because of their unique properties. Due to the martensitic phase change, they can revert to their original shape by heating when subjected to an appropriate treatment. This thermal shape memory effect (SME) can show a significant shape change combined with a considerable force. Therefore such elements can be used to solve many technical tasks in the field of actuating elements and mechatronics and will play an increasing role in the next years, especially within the automotive technology, energy management, power, and mechanical engineering as well as medical technology. Beside this thermal SME, these materials also show a mechanical SME, characterized by a superelastic plateau with reversible elongations in the range of 8%. This behavior is based on the building of stress-induced martensite of loaded austenite material at constant temperature and facilitates a lot of applications especially in the medical field. Both SMEs are attended by energy dissipation during the martensitic phase change. This paper describes the first results obtained on different actuator and superelastic NiTi wires concerning their use as damping elements in automotive safety systems. In a first step, the damping behavior of small NiTi wires up to 0.5 mm diameter was examined at testing speeds varying between 0.1 and 50 mm/s upon an adapted tensile testing machine. In order to realize higher testing speeds, a drop impact testing machine was designed, which allows testing speeds up to 4000 mm/s. After introducing this new type of testing machine, the first results of vertical-shock tests of superelastic and electrically activated actuator wires are presented. The characterization of these high dynamic phase change parameters represents the basis for new applications for shape memory damping elements, especially in automotive safety systems.

  14. Sodium borohydride hydrogen generator using Co–P/Ni foam catalysts for 200 W proton exchange membrane fuel cell system

    International Nuclear Information System (INIS)

    Oh, Taek Hyun; Gang, Byeong Gyu; Kim, Hyuntak; Kwon, Sejin

    2015-01-01

    The response characteristics of electroless-deposited Co–P/Ni foam catalysts for sodium borohydride hydrolysis were investigated. The effect of nickel foam geometry on the properties of the catalysts was evaluated. As the PPI (pores per inch) of the nickel foam increased, the hydrogen generation rate per gram of the deposited catalyst increased due to an increase in surface area. The response characteristics of various catalysts were compared under real operating conditions. When a thin nickel foam with high PPI was used, the response characteristics of the catalyst improved due to an increase in the amount of the deposited catalyst and surface area. Finally, a 200 W PEMFC (proton exchange membrane fuel cell) system using electroless-deposited Co–P/Ni foam (110 PPI) catalyst was investigated. The response time to reach a hydrogen generation rate sufficient for a 200 W PEMFC was 71 s, and the energy density of a 200 W fuel cell system for producing 600 Wh was 252.1 Wh/kg. A fuel cell system using Co–P/Ni foam catalysts can be widely used as a power source for mobile applications due to fast response characteristics and high energy density. - Highlights: • Response characteristics of Co–P/Ni foam catalysts are investigated. • Catalytic activity is improved with increase in PPI (pores per inch) of Ni foam. • Co–P/Ni foam (110 PPI) catalyst has improved response characteristics. • The energy density of a 200 W PEMFC system for producing 600 Wh is 252.1 Wh/kg. • Co–P/Ni foam (110 PPI) catalyst is suitable for fuel cell system.

  15. Computer modeling of the process of self-propagating high-temperature synthesis in thin system Ni-Al

    International Nuclear Information System (INIS)

    Poletayev, G.M.; Starostenkov, M.D.; Denisova, N.F.; Skakov, M.K.

    2004-01-01

    Full text: The process of synthesis of thermal phases of the system Ni-Al is studied through the method of molecular dynamics. As the object of investigation was chosen two-dimensional crystal, that corresponds to atomic packing laying at the plane of volumetric fcc crystal. Clean Ni was taken as a matrix crystal. A particle of clean Al is packed in the center of matrix block. Beyond the bounds of calculated block crystal packing is repeated with the help of periodical border conditions. The interaction between different pairs of atoms is set by pair potential function of Morse, considering interatomic bonding of the point of the sixth coordinate sphere. The allocation of speeds of atomic function in the system is set through the Boltzmann factor, depending the temperature. When the bicrystal is represented by the ideal atom packing and there are no vacancies , the process of structural adjustment is only observed at the temperature, that is higher than melting point. At that, structural adjustment is observed in circular mechanism of atom allocation, also through the border between phases of clean Ni and Al. As a result, Al particle is transformed, at the border between metals, fields of positional disorder and embryos of intermetallide phases NiAl 2 , Ni 2 Al, Ni 3 Al. The introduction of of free volume through the creation of vacancies significantly lowers the temperature of the beginning of the synthesis process of intermetallide phases. The greatest decrease in temperature to the point of 300 K happens, when the vacancies are located in Ni field of bicrystal, the beginning of the thermo-activation is directly connected with the distance from interphase borders. As the process of thermo-activation continues, vacancies located in Ni matrix right up to seventh neighborhood relatively the border bicrystal. During thermo-activation Al particles enter the field and activate the synthesis process

  16. Separation of Cd and Ni from Ni-Cd batteries by an environmentally safe methodology employing aqueous two-phase systems

    Energy Technology Data Exchange (ETDEWEB)

    Lacerda, Vania Goncalves; Mageste, Aparecida Barbosa; Santos, Igor Jose Boggione; da Silva, Luis Henrique Mendes; da Silva, Maria do Carmo Hespanhol [Grupo de Quimica Verde Coloidal e Macromolecular, Departamento de Quimica, Centro de Ciencias e Tecnologicas, Universidade Federal de Vicosa, Av. P.H. Rolfs s/n, Campus da UFV, Vicosa, 36570-000 (Brazil)

    2009-09-05

    The separation of Cd and Ni from Ni-Cd batteries using an aqueous two-phase system (ATPS) composed of copolymer L35, Li{sub 2}SO{sub 4} and water is investigated. The extraction behavior of these metals from the bottom phase (BP) to the upper phase (UP) of the ATPS is affected by the amount of added extractant (potassium iodide), tie-line length (TLL), mass ratio between the phases of the ATPS, leaching and dilution factor of the battery samples. Maximum extraction of Cd (99.2 {+-} 3.1)% and Ni (10.6 {+-} 0.4)% is obtained when the batteries are leached with HCl, under the following conditions: 62.53% (w/w) TLL, concentration of KI equal to 50.00 mmol kg{sup -1}, mass ratio of the phases equal to 0.5 and a dilution factor of battery samples of 35. This novel methodology is efficient to separate the metals in question, with the advantage of being environmentally safe, since water is the main constituent of the ATPS, which is prepared with recyclable and biodegradable compounds. (author)

  17. Tuning antiferromagnetic exchange interaction for spontaneous exchange bias in MnNiSnSi system

    Science.gov (United States)

    Jia, Liyun; Shen, Jianlei; Li, Mengmeng; Wang, Xi; Ma, Li; Zhen, Congmian; Hou, Denglu; Liu, Enke; Wang, Wenhong; Wu, Guangheng

    2017-12-01

    Based on almost all the data from the literature on spontaneous exchange bias (SEB), it is expected that the system will show SEB if it meets two conditions simultaneously: (i) there are the coexistence and competition of antiferromagnetic (AFM) and ferromagnetic (FM) interactions and (ii) AFM interaction should dominate but not be too strong in this competition. In order to verify this view, a systematic study on SEB has been performed in this work. Mn50Ni40Sn10 with strong FM interaction and without SEB is chosen as the mother composition, and the negative chemical pressure is introduced by the substitution of Sn by Si to enhance AFM interaction. It is found that a long-range FM ordering window is closed, and a long-range AFM ordering window is opened. As a result, SEB is triggered and a continuous tuning of the spontaneous exchange bias field (HSEB) from 0 Oe to 1300 Oe has been realized in a Mn50Ni40Sn10-xSix system by the enhanced AFM interaction.

  18. Interface adjustment and exchange coupling in the IrMn/NiFe system

    Energy Technology Data Exchange (ETDEWEB)

    Spizzo, F.; Tamisari, M.; Chinni, F.; Bonfiglioli, E.; Del Bianco, L., E-mail: lucia.delbianco@unife.it

    2017-01-01

    The exchange bias effect was investigated, in the 5–300 K temperature range, in samples of IrMn [100 Å]/NiFe [50 Å] (set A) and in samples with inverted layer-stacking sequence (set B), produced at room temperature by DC magnetron sputtering in a static magnetic field of 400 Oe. The samples of each set differ for the nominal thickness (t{sub Cu}) of a Cu spacer, grown at the interface between the antiferromagnetic and ferromagnetic layers, which was varied between 0 and 2 Å. It has been found out that the Cu insertion reduces the values of the exchange field and of the coercivity and can also affect their thermal evolution, depending on the stack configuration. Indeed, the latter also determines a peculiar variation of the exchange bias properties with time, shown and discussed with reference to the samples without Cu of the two sets. The results have been explained considering that, in this system, the exchange coupling mechanism is ruled by the glassy magnetic behavior of the IrMn spins located at the interface with the NiFe layer. Varying the stack configuration and t{sub Cu} results in a modulation of the structural and magnetic features of the interface, which ultimately affects the spins dynamics of the glassy IrMn interfacial component. - Highlights: • Exchange bias effect in IrMn/NiFe samples with interfacial Cu spacer. • A variation of exchange bias with time is observed in as-deposited samples. • Magnetic modification of the interface by varying the stack sequence and Cu thickness. • Interface adjustment affects the dynamics of interfacial IrMn spins. • The exchange bias properties can be tuned by interface adjustment.

  19. Sputtering yields of Si and Ni from the Ni sub(1-x)Si sub(x) system studied by Rutherford backscattering spectrometry

    Energy Technology Data Exchange (ETDEWEB)

    Kim, S C; Yamaguchi, S; Kataoka, Y; Iwami, M; Hiraki, A [Osaka Univ., Suita (Japan). Faculty of Engineering; Satou, M; Fujimoto, F

    1982-01-01

    Sputtering yields of Si and Ni from thin layer films of Ni-Si compounds (Ni sub(1-x)Si sub(x)), including the pure materials (Ni and Si), caused by 5keV Ar/sup +/ ion bombardment were investigated using backscattering spectrometry. The sputtering yield for Si from Ni sub(1-x)Si sub(x) increased with increasing Si concentration. However, there is an abrupt decrease in the yield for Si concentrations above NiSi/sub 2/ to pure Si. This is in clear contrast to the sputtering yield of Ni from Ni sub(1-x)Si sub(x) which increased with increasing Ni concentration monotonously. These results are discussed on the basis of both the difference in the atomic density and the electronic state of the alloy.

  20. Geometric analysis of root canals prepared by four rotary NiTi shaping systems.

    Science.gov (United States)

    Hashem, Ahmed Abdel Rahman; Ghoneim, Angie Galal; Lutfy, Reem Ahmed; Foda, Manar Yehia; Omar, Gihan Abdel Fatah

    2012-07-01

    A great number of nickel-titanium (NiTi) rotary systems with noncutting tips, different cross-sections, superior resistance to torsional fracture, varying tapers, and manufacturing method have been introduced to the market. The purpose of this study was to evaluate and compare the effect of 4 rotary NiTi preparation systems, Revo-S (RS; Micro-Mega, Besancon Cedex, France), Twisted file (TF; SybronEndo, Amersfoort, The Netherlands), ProFile GT Series X (GTX; Dentsply, Tulsa Dental Specialties, Tulsa, OK), and ProTaper (PT; Dentsply Maillefer, Ballaigues, Switzerland), on volumetric changes and transportation of curved root canals. Forty mesiobuccal canals of mandibular molars with an angle of curvature ranging from 25° to 40° were divided according to the instrument used in canal preparation into 4 groups of 10 samples each: group RS, group TF, group GTX, and group PT. Canals were scanned using an i-CAT CBCT scanner (Imaging Science International, Hatfield, PA) before and after preparation to evaluate the volumetric changes. Root canal transportation and centering ratio were evaluated at 1.3, 2.6, 5.2, and 7.8 mm from the apex. The significance level was set at P ≤ .05. The PT system removed a significantly higher amount of dentin than the other systems (P = .025). At the 1.3-mm level, there was no significant difference in canal transportation and centering ratio among the groups. However, at the other levels, TF maintained the original canal curvature recording significantly the least degree of canal transportation as well as the highest mean centering ratio. The TF system showed superior shaping ability in curved canals. Revo-S and GTX were better than ProTaper regarding both canal transportation and centering ability. Copyright © 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  1. Investigations on Cu-Ni and Cu-Al systems with secondary ion mass spectrometry (SIMS)

    International Nuclear Information System (INIS)

    Rodriguez-Murcia, H.; Beske, H.E.

    1976-04-01

    The ratio of the ionization coefficients of secondary atomic ions emitted from the two component systems Cu-Ni and Cu-Al was investigated as a function of the concentration of the two components. In the low concentration range the ratio of the ionization coefficients is a constant. An influence of the phase composition on the ratio of the ionization coefficients was found in the Cu-Al system. In addition, the cluster ion emission was investigated as a function of the concentration and the phase composition of the samples. The secondary atomic ion intensity was influenced by the presence of cluster ions. The importance of the cluster ions in quantitative analysis and phase determination by means of secondary ion mass spectrometry are discussed. (orig.) [de

  2. Design and implementation of a general and automatic test platform base on NI PXI system

    Science.gov (United States)

    Shi, Long

    2018-05-01

    Aiming at some difficulties of test equipment such as the short product life, poor generality and high development cost, a general and automatic test platform base on NI PXI system is designed in this paper, which is able to meet most test requirements of circuit boards. The test platform is devided into 5 layers, every layer is introduced in detail except for the "Equipment Under Test" layer. An output board of a track-side equipment, which is an important part of high speed train control system, is taken as an example to make the functional circuit test by the test platform. The results show that the test platform is easy to realize add-on functions development, automatic test, wide compatibility and strong generality.

  3. Experimental study on thermophysical and kinetic properties of the LaNi5-H2 system

    International Nuclear Information System (INIS)

    Yoshida, A.; Naka, A.; Ohkita, T.

    1991-01-01

    This paper reports on thermophysical and kinetic properties of the LaNi 5 -H 2 system that were investigated for the practical utilization of hydriding alloys. Measurements of the thermophysical properties were carried out by a transient hot-wire method along the P-C isotherms. The effective thermal conductivities of the system increase not only with an increase of hydrogen gas pressure but also in the plateau region with an increase of composition of metal hydride. The specific heats of the metal hydride increase with an increase in composition. The kinetic properties were measured under both isobaric and isothermal conditions. The derived intrinsic chemical reaction rates indicate a difference in the reaction mechanism between the absorption and the desorption processes

  4. Bridging exchange bias effect in NiO and Ni(core)@NiO(shell) nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Rinaldi-Montes, Natalia, E-mail: nataliarin@gmail.com [Departamento de Física, Universidad de Oviedo, E-33007 Oviedo (Spain); Gorria, Pedro [Departamento de Física & IUTA, EPI, Universidad de Oviedo, E-33203 Gijón (Spain); Martínez-Blanco, David [Servicios Científico-Técnicos, Universidad de Oviedo, E-33006 Oviedo (Spain); Fuertes, Antonio B. [Instituto Nacional del Carbón, CSIC, E-33080 Oviedo (Spain); Fernández Barquín, Luis [CITIMAC, Facultad de Ciencias, Universidad de Cantabria, E-39005 Santander (Spain); Puente-Orench, Inés [Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza and Institut Laue-Langevin, BP 156, F-38042 Grenoble Cedex 9 (France); Blanco, Jesús A. [Departamento de Física, Universidad de Oviedo, E-33007 Oviedo (Spain)

    2016-02-15

    Among all bi-magnetic core(transition metal)@shell(transition metal oxide) nanoparticles (NPs), Ni@NiO ones show an onset temperature for the exchange bias (EB) effect far below the Néel temperature of bulk antiferromagnetic NiO. In this framework, the role played by the magnetism of NiO at the nanoscale is investigated by comparing the microstructure and magnetic properties of NiO and Ni@NiO NPs. With the aim of bridging the two systems, the diameter of the NiO NPs (~4 nm) is chosen to be comparable to the shell thickness of Ni@NiO ones (~2 nm). The EB effect in Ni@NiO NPs is attributed to the exchange coupling between the core and the shell, with an interfacial exchange energy of ΔE~0.06 erg cm{sup −2}, thus comparable to previous reports on Ni/NiO interfaces both in thin film and NP morphologies. In contrast, the EB detected in NiO NPs is explained in a picture where uncompensated spins located on a magnetically disordered surface shell are exchange coupled to the antiferromagnetic core. In all the studied NPs, the variation of the EB field as a function of temperature is described according to a negative exponential law with a similar decay constant, yielding a vanishing EB effect around T~40–50 K. In addition, the onset temperature for the EB effect in both NiO and Ni@NiO NPs seems to follow a universal dependence with the NiO crystallite size. - Highlights: • Comparison of the exchange bias effect in NiO and Ni(core)@NiO(shell) nanoparticles. • Universal temperature dependence of the exchange bias effect. • Suggested similar physical origin of the effect in both systems. • Size and crystallinity of the NiO shell hold the key for exchange bias properties.

  5. FY1995 study of highly efficient power generation system based on chemical-looping combustion; 1995 nendo chemical loop nenshoho ni yoru kokoritsu hatsuden system no kaihatsu ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    Synthesis of highly efficient and low emission power generation plant with chemical-looping combustion using various fuels such as natural gas, coal gas and hydrogen. Development of new looping materials with suitable reactivity, regenerative ability, and avoidance of carbon deposition. To obtain the design data for demo-plant by using the current experiment high- pressure fixed bed reactor. From the viewpoint of application of the proposed power generation system with chemical-looping combustion, the following main results were obtained. 1. New looping materials: NiO/NiAl{sub 2}O{sub 4}, CoO-NiO/YSZ, and Co{sub 3}O{sub 4}/CoAl{sub 2}O{sub 4}. These materials have high reactivity, repeatability, and avoidance of carbon deposition which play important roles in application of this new combustor. 2. NO{sub x} formation can be completely avoided; both fuel NO{sub x} in reduction reactor for coal gas as fuel and thermal NO{sub x} in oxidation reactor. 3. It is identified from the experiment using fixed bed reactor with the elevated pressure that NiO/NiAl{sub 2}O{sub 4} is a suitable material for coal gas or hydrogen. These promising results have provided valuable data for industrial application. (NEDO)

  6. Effects of electronic excitation in 150 keV Ni ion irradiation of metallic systems

    Science.gov (United States)

    Zarkadoula, Eva; Samolyuk, German; Weber, William J.

    2018-01-01

    We use the two-temperature model in molecular dynamic simulations of 150 keV Ni ion cascades in nickel and nickel-based alloys to investigate the effect of the energy exchange between the atomic and the electronic systems during the primary stages of radiation damage. We find that the electron-phonon interactions result in a smaller amount of defects and affect the cluster formation, resulting in smaller clusters. These results indicate that ignoring the local heating due to the electrons results in the overestimation of the amount of damage and the size of the defect clusters. A comparison of the average defect production to the Norgett-Robinson-Torrens (NRT) prediction over a range of energies is provided.

  7. Prototype tests on the ion source power supplies of the TEXTOR NI-system

    International Nuclear Information System (INIS)

    Goll, O.; Braunsberger, U.; Schwarz, U.

    1987-01-01

    The PINI ion source for the TEXTOR neutral injector is fed by a new modular transistorized power supply. All modules are located in a high voltage cage on 55 kV dc against ground. The normal operation of the injectors includes frequent grid breakdowns causing transient high voltage stresses on the ion source power supplies. These stresses must not disturb the safe operation of the power supplies. The paper describes the set up for extensive testing of a supply prototype module under the expected operating conditions. The main features of this test program are reviewed and the measures taken for a safe operation are discussed. As a result of the investigations, recommendations for the installation of the power supplies at the TEXTOR NI system are given

  8. High pressure phase transition in Zr–Ni binary system: A first principle study

    Energy Technology Data Exchange (ETDEWEB)

    Mukherjee, Debojyoti, E-mail: debojyoti@barc.gov.in; Sahoo, B.D.; Joshi, K.D.; Gupta, Satish C.

    2015-11-05

    Total energy calculations have been performed on zirconium–nickel (with 50% nickel by atom) binary system to examine its structural stability under high pressure. The evolutionary structure search method in conjunction with density functional theory based projector augmented wave (PAW) method suggested that at zero pressure an orthorhombic phase with space group symmetry Cmcm is the lowest enthalpy structure, in agreement with the experiments. Further, it has been predicted that upon compression at ∼10 GPa, this structure will transform to a lower symmetry triclinic phase (space group P-1) which will remain stable up to ∼50 GPa, the maximum pressure of the present calculations. To support the results of our static lattice calculations, we performed lattice dynamic calculations also on Cmcm and P-1 structures. Lattice dynamic calculations correctly showed that at ambient condition the Cmcm phase is dynamically stable. Further, these calculations carried around the Cmcm to P-1 transition pressure predicted that the Cmcm phase will become unstable dynamically due to failure of acoustic zone boundary phonons, suggesting that the Cmcm to P-1 transition is phonon driven. For P-1 phase our calculations showed that this structure is dynamically stable not only at high pressures but also at ambient condition, indicating that at pressure lower than 10 GPa this phase could be a metastable structure. Further, we have calculated the elastic constants for both the phase at various pressures. - Highlights: • Pressure induced phonon driven orthorhombic to triclinic phase transformations in Zr–Ni binary system at ∼10 GPa. • Elastic and lattice dynamic stability of orthorhombic and triclinic phase. • Exploitation of evolutionary structure searching method to explore high pressure phase of Zr–Ni material.

  9. FY 2000 Feasibility study on the environmentally-friendly coal utilization systems as part of the international project for coal utilization measures. Feasibility study on supporting introduction of the environmentally-friendly coal utilization systems in Vietnam (Model project for introduction of advanced coal preparation systems); 2000 nendo kokusai sekitan riyo taisaku jigyo chosa hokokusho. Kankyo chowagata sekitan riyo system kanosei chosa jigyo Vietnam ni okeru kankyo chowagata sekitan riyo system donyu shien jigyo (kodo sentan system donyu model jigyo kanosei chosa jigyo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-06-01

    The feasibility study was conducted on a model project in Vietnam, aimed at solving the environmental pollution problems resulting from use of coal by demonstrating and disseminating the Japan's environmental technologies in the Southeast Asian countries. The feasibility study was conducted for the Cua Ong Coal Preparation Enterprise, which has the largest coal preparation capacity in Vietnam and port facilities. It is treating raw coal from 10 coal mines for classification and preparation, and shipping coal of various types that meet the standards for domestic use and export. The survey results point out that unrecovered coal remains in waste water discharged from the coal preparation plants to pollute the sea area, and that quantity of the refuse increases because of the unrecovered coal it contains. The environmental technologies needed to introduce include modification to variable wave pattern type jigging separator, refuse height measuring instrument and automatic controller, circulating heavy medium gravimeter, highly functional settling pond, and flocculent facilities. (NEDO)

  10. Use of Ni63 Overvoltage Gap Switches in the Flight Termination Systems on Boosters Launched from U.S. Army Kwajalein Atoll (USAKA)

    Science.gov (United States)

    1990-05-01

    COMMAND AGENCY: United States Army Strategic Defense Command. ACTION: Use of Ni63 Overvoltage Gap Switches in the Flight Termination Systems on Boosters...SOURCE OF FUNDING NUMBERS PROGRAM PROJECT TASK WORK UNIT ELEMENT NO. NO. NO. ACCESSION NO. I TITLE (Include Security Claification) Use of Ni63 ...U) 1 PERSONAL AUTHOR(S) Ni63 Environmental Assessment Team, Mr. Randy Gallien (Chairman) 1𔄁. TYPE OF REPORT 13b. TIME COVERED 14. DATE OF REPORT

  11. Superconductivity and anomalous normal state in the CePd2Si2/CeNi2Ge2 system

    International Nuclear Information System (INIS)

    Grosche, F.M.; Lister, S.J.S.; Carter, F.V.; Saxena, S.S.; Haselwimmer, R.K.W.; Mathur, N.D.; Julian, S.R.; Lonzarich, G.G.

    1997-01-01

    The unconventional nonmagnetic metal CeNi 2 Ge 2 is characterised at ambient pressure by temperature dependences of the specific heat and of the resistivity which deviate strongly from standard Fermi-liquid predictions and are reminiscent of the behaviour observed in its sibling system CePd 2 Si 2 above the critical pressure at which magnetic order is suppressed. We have explored the CePd 2 Si 2 /CeNi 2 Ge 2 phase diagram in a series of resistivity measurements under high hydrostatic pressure, p. At p>15 kbar, a new superconducting transition appears below 220 mK in CeNi 2 Ge 2 and shifts to higher temperatures with increasing pressure, reaching ∝400 mK at p∝26 kbar. (orig.)

  12. Magnetic and transport behaviour in Pr3X(X=In,Sn,Ga,Ge,Ni,Co,Ru,Ir) systems

    International Nuclear Information System (INIS)

    Garde, C.S.; Ray, J.

    1998-01-01

    Magnetic and transport studies on Pr 3 X (X=In, Sn, Ga, Ge, Ni, Co, Ru, Ir) systems gave evidence for complex magnetic behaviour. All the systems, except X=Sn, exhibit ferromagnetic ordering. The X=Sn system exhibits antiferromagnetic ordering. For X=Ga and Sn, metamagnetic behaviour has been observed. Crystal field effects are found to play an important role in influencing magnetic behaviour. The strength of the crystal field term has also been estimated. (orig.)

  13. Experimental investigation and thermodynamic calculation of the Fe-Mg-Mn and Fe-Mg-Ni systems

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Peisheng; Zhao, Jingrui; Xu, Honghui; Liu, Shuhong; Ouyang, Hongwu [Central South Univ., Hunan (China). State Key Lab. of Powder Metallurgy; Du, Yong [Central South Univ., Hunan (China). State Key Lab. of Powder Metallurgy; Harbin Institute of Technology (China). State Key Lab. of Advanced Welding Production Technology; Gang, Tie; Fen, Jicai [Harbin Institute of Technology (China). State Key Lab. of Advanced Welding Production Technology; Zhang, Lijun [Central South Univ., Hunan (China). State Key Lab. of Powder Metallurgy; Bochum Univ. (Germany). ICAMS Inst.; He, Cuiyun [Guangxi Univ. (China). College of Physical Science and Technology

    2011-01-15

    Based on the thermodynamic calculations extrapolated from the corresponding binary sub-systems, four decisive alloys in the Fe-Mg-Mn system and three in the Fe-Mg-Ni system were selected and prepared using a powder metallurgy method to measure the isothermal sections at 500 C in both systems. The prepared samples were annealed at 500 C, and then subjected to X-ray diffraction, optical microscopy, scanning electron microscopy with energy-dispersive X-ray spectrometry as well as electron probe microanalysis. Taking into account the presently obtained experimental data and the experimental data available in the literature, thermodynamic modeling was performed for the above systems. It was found that a direct extrapolation from the corresponding three binary systems can well reproduce all the experimental data in the Fe-Mg-Mn system, while two thermodynamic parameters are needed in the Fe-Mg-Ni system to fit all the experimental data. The liquidus projections and reaction schemes for the Fe-Mg-Mn and Fe-Mg-Ni systems are also presented. (orig.)

  14. Effect of adding Si on shape memory effect in Co-Ni alloy system

    Energy Technology Data Exchange (ETDEWEB)

    Zhou Weimin [School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030 (China); Liu Yan [Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); Jiang Bohong [School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030 (China)]. E-mail: bhjiang@sjtu.edu.cn; Zhou Pingnan [School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030 (China)

    2006-11-25

    In this paper, the effect of adding Si to Co-31.5 mass% Ni alloys on fcc-hcp martensitic transformation is investigated. The Co-Ni-Si ternary alloys with different amount of Si from 1 to 5 mass% were prepared. The stacking fault probability of Co-Ni-Si polycrystalline alloys were determined by X-ray diffraction profile analysis and compared with the binary Co-Ni alloy. The results show that the stacking fault probability of the fcc phase of alloys increases with increasing Si content. The effect of Si on phase transformation and shape memory behavior is evaluated. The experimental results show that both the critical strength and the shape memory effect of the ternary alloys will increase by the addition of Si. The improvement mechanism of the shape memory effect by adding Si to binary Co-Ni alloys is discussed.

  15. Consistent analysis of peripheral reaction channels and fusion for the 16,18O+58Ni systems

    International Nuclear Information System (INIS)

    Alves, J.J.S.; Gomes, P.R.S.; Lubian, J.; Chamon, L.C.; Pereira, D.; Anjos, R.M.; Rossi, E.S.; Silva, C.P.; Alvarez, M.A.G.; Nobre, G.P.A.; Gasques, L.R.

    2005-01-01

    We have measured elastic scattering and peripheral reaction channel cross sections for the 16,18 O+ 58 Ni systems at ELab=46 MeV. The data were analyzed through extensive coupled-channel calculations. It was investigated the consistency of the present analysis with a previous one at sub-barrier energies. Experimental fusion cross sections for these systems are also compared with the corresponding predictions of the coupled-channel calculations

  16. FY 2000 report on the results of the regional consortium R and D project - Regional consortium energy field. Third year report. Development of precision farming system combined with the autonomous vehicle for large scale agriculture; 2000 nendo chiiki consortium kenkyu kaihatsu jigyo - chiiki consortium energy bun'ya. Daikibo nogyo muke seimitsu jiritsu soko sagyo shien system no kenkyu kaihatsu (dai 3 nendo) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    A farming supporting system that enables autonomous driving was developed from a viewpoint that the development of super manpower saving technology including automation helps sustainable development of the Japanese agriculture. The following were conducted: development of autonomous driving vehicle, development of automated operation unit, field space mapping for precision agriculture and development of groups of PF (precision farming) work machine (weeder, controller, fertilizer applicator, harvesting machine), development of groups of field work sensor (simple soil analytical system, crop growing sensor, glass yield sensor), development of field information managing database, development of work optimized application software. The operation test on the integration system was made at the model production field. The operation experiment using fertilizer applicator, controller and autonomous driving tractor was carried out at a beet field of 2ha in the farming zone in Tokachi, Hokkaido, and the results were obtained as expected. Further, as to the precision agriculture introduced with developmental equipment, etc., 20% of the energy consumption is expected to be reduced. (NEDO)

  17. FY 2000 report on the results of the regional consortium R and D project - Regional consortium energy field. Third year report. Development of precision farming system combined with the autonomous vehicle for large scale agriculture; 2000 nendo chiiki consortium kenkyu kaihatsu jigyo - chiiki consortium energy bun'ya. Daikibo nogyo muke seimitsu jiritsu soko sagyo shien system no kenkyu kaihatsu (dai 3 nendo) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    A farming supporting system that enables autonomous driving was developed from a viewpoint that the development of super manpower saving technology including automation helps sustainable development of the Japanese agriculture. The following were conducted: development of autonomous driving vehicle, development of automated operation unit, field space mapping for precision agriculture and development of groups of PF (precision farming) work machine (weeder, controller, fertilizer applicator, harvesting machine), development of groups of field work sensor (simple soil analytical system, crop growing sensor, glass yield sensor), development of field information managing database, development of work optimized application software. The operation test on the integration system was made at the model production field. The operation experiment using fertilizer applicator, controller and autonomous driving tractor was carried out at a beet field of 2ha in the farming zone in Tokachi, Hokkaido, and the results were obtained as expected. Further, as to the precision agriculture introduced with developmental equipment, etc., 20% of the energy consumption is expected to be reduced. (NEDO)

  18. Phase transformations in the reaction cell of TiNi-based sintered systems

    Science.gov (United States)

    Artyukhova, Nadezhda; Anikeev, Sergey; Yasenchuk, Yuriy; Chekalkin, Timofey; Gunther, Victor; Kaftaranova, Maria; Kang, Ji-Hoon; Kim, Ji-Soon

    2018-05-01

    The present work addresses the structural-phase state changes of porous TiNi-based compounds fabricated by reaction sintering (RS) of Ti and Ni powders with Co, Mo, and no additives introduced. The study also emphasizes the features of a reaction cell (RC) during the transition from the solid- to liquid-phase sintering. Mechanisms of phase transformations occurring in the solid phase, involving the low-melting Ti2Ni phase within the RC, have been highlighted. Also, the intermediate Ti2Ni phase had a crucial role to provide both the required RS behavior and modified phase composition of RS samples, and besides, it is found to be responsible for the near-equiatomic TiNi saturation of the melt. Both cobalt and molybdenum additives are shown to cause additional structuring of the transition zone (TZ) at the Ti2Ni‑TiNi interface and broadening of this zone. The impact of Co and Mo on the Ti2Ni phase is evident through fissuring of this phase layer, which is referred to solidified stresses increased in the layer due to post-alloying defects in the structure.

  19. Thermodynamic Description Of Ternary Fe-B-X Systems. Part 2: Fe-B-Ni

    Directory of Open Access Journals (Sweden)

    Miettinen J.

    2014-06-01

    Full Text Available Przedstawiono termodynamiczny opis trójskładnikowego układu Fe-B-Ni w kontekście nowej bazy danych dla układów Fe-B-X (X = Cr, Ni, Mn, Si, Ti, V, C. Parametry termodynamiczne dwuskładnikowych stopów Fe-B. Fe-Ni i B-Ni zostały są zaczerpnięte z wcześniejszych opracowań, przy tym opis B-Ni został nieznacznie zmodyfikowany. Parametry dla układu Fe-B-Ni zostały zoptymalizowane w tej pracy w oparciu o eksperymentalne równowagi fazowe i dane termodynamiczne zaczerpnięte z literatury. Roztwory stałe w układzie Fe-B-Ni opisano przy użyciu modelu roztworu substytucyjnego, a borki traktowane są jako fazy stechiometryczne lub półstechiometryczne typu (A.BpCq opisane przy użyciu modelu dwu podsieci.

  20. Simultaneous decomplexation in blended Cu(II)/Ni(II)-EDTA systems by electro-Fenton process using iron sacrificing electrodes.

    Science.gov (United States)

    Zhao, Zilong; Dong, Wenyi; Wang, Hongjie; Chen, Guanhan; Tang, Junyi; Wu, Yang

    2018-05-15

    This research explored the application of electro-Fenton (E-Fenton) technique for the simultaneous decomplexation in blended Cu(II)/Ni(II)-EDTA systems by using iron sacrificing electrodes. Standard discharge (0.3 mg L -1 for Cu and 0.1 mg L -1 for Ni in China) could be achieved after 30 min reaction under the optimum conditions (i.e. initial solution pH of 2.0, H 2 O 2 dosage of 6 mL L -1  h -1 , current density of 20 mA/cm 2 , inter-electrode distance of 2 cm, and sulfate electrolyte concentration of 2000 mg L -1 ). The distinct differences in apparent kinetic rate constants (k app ) and intermediate removal efficiencies corresponding to mere and blended systems indicated the mutual promotion effect toward the decomplexation between Cu(II) and Ni(II). Massive accumulation of Fe(Ⅲ) favored the further removal of Cu(II) and Ni(II) by metal ion substitution. Species distribution results demonstrated that the decomplexation of metal-EDTA in E-Fenton process was mainly contributed to the combination of various reactions, including Fenton reaction together with the anodic oxidation, electro-coagulation (E-coagulation) and electrodeposition. Unlike hypophosphite and citrate, the presence of chlorine ion displayed favorable effects on the removal efficiencies of Cu(II) and Ni(II) at low dosage, but facilitated the ammonia nitrogen (NH 4 + -N) removal only at high dosage. Copyright © 2018 Elsevier B.V. All rights reserved.

  1. Unusual Co moment reduction in the NiCoO/Co exchange bias system

    Energy Technology Data Exchange (ETDEWEB)

    Brueck, S. [Max-Planck-Institut fuer Metallforschung, Heisenbergstrasse 3, D-70569 Stuttgart (Germany)]. E-mail: brueck@mf.mpg.de; Goering, E. [Max-Planck-Institut fuer Metallforschung, Heisenbergstrasse 3, D-70569 Stuttgart (Germany); Tang, Y.J. [Center for Magnetic Recording Research, University of California at San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0401 (United States); Schuetz, G. [Max-Planck-Institut fuer Metallforschung, Heisenbergstrasse 3, D-70569 Stuttgart (Germany); Berkowitz, A.E. [Center for Magnetic Recording Research, University of California at San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0401 (United States); Department of Physics, University of California at San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0401 (United States)

    2007-03-15

    To answer the question on how the explicit mechanism of coupling in the antiferromagnetic alloy NiCoO is established when in close contact to a ferromagnetic Co layer, X-ray magnetic circular dichroism (XMCD) measurements have been performed. Precise XMCD spectra at the L{sub 2,3}-edge of Ni as well as Co have been obtained at room temperature and at 80K by measuring total electron yield X-ray absorption spectra. The Ni XMCD clearly shows the existence of free, rotatable magnetic Ni moments in the antiferromagnet. As for the Co, XMCD at room temperature shows an average magnetic moment comparable to bulk values. Cooling the sample to 80K decreases the average Co moment by 10%. This decrease is explained by a reduction of ferromagnetic cobalt moments related to antiferromagnetic coupling or pinning close to the interface.

  2. Investigation of structural and hydrogen absorption properties in the LaNi5-xPtx-H2 system

    International Nuclear Information System (INIS)

    Joubert, J.-M.; Charton, J.; Percheron-Guegan, A.

    2003-01-01

    The substitution of nickel by platinum in the binary LaNi 5 compound (CaCu 5 structure type, a=5.019(1) A, c=3.981(1) A, space group P6/mmm) and its effect on the hydrogenation properties was studied. The phase LaNi 5-x Pt x has a homogeneity domain ranging from x=0 to 5. For x 3. Contrary to what is observed in other systems, the hydrogen absorption plateau pressure was found to increase as a function of the cell volume. Powder neutron diffraction experiments were conducted for two deuterated compounds with x=0.25 and 0.75. Deuterium partial ordering occurs in the case of x=0.25 leading to a symmetry decrease to the space group P6mm (LaNi 4.75 Pt 0.25 D 5.23 , a=4.225(1) A, c=5.357(1) A, Z=1, R Bragg =3.3%). For x=0.75, an orthorhombic superstructure based on the CaCu 5 -type lattice was found (LaNi 4.25 Pt 0.75 D 2.61 , a orth =√3a hex =9.089(1) A, b orth =b hex =5.272(1) A, c orth =2c hex =8.145(1) A, Z=4, SG Ibam, R Bragg =6.1%)

  3. Bioleaching of spent Ni-Cd batteries by continuous flow system: Effect of hydraulic retention time and process load

    International Nuclear Information System (INIS)

    Zhao Ling; Yang Dong; Zhu Nanwen

    2008-01-01

    Spent Ni-Cd batteries bring a severe environmental problem that needs to be solved urgently. A novel continuous flow two-step leaching system based on bioleaching was introduced to dissolve heavy metals in batteries. It consists of an acidifying reactor which was used to culture indigenous thiobacilli and a leaching reactor which was used to leach metals from spent batteries. The indigenous acidophilic thiobacilli in sewage sludge was used as the microorganisms and the sludge itself as culture medium. Bioleaching tests at different hydraulic retention time (HRT) and process load in the leaching reactor were performed. The results showed that the longer the HRT (1, 3, 6, 9 and 15 days) was, the more time required to achieve the complete leaching of Ni, Cd and Co. The maximum dissolution of cadmium and cobalt was achieved at higher pH values (3.0-4.5) while the leaching of nickel hydroxide and nickel in metallic form (Ni 0 ) were obtained separately in different acidity (pH 2.5-3.5). It cost about 25, 30 and more than 40 days to remove all of the three heavy metals with the process load of two, four and eight Ni-Cd batteries under the conditions that the ingoing bio-sulphuric acid was 1 L d -1 and HRT was 3 days

  4. Bioleaching of spent Ni-Cd batteries by continuous flow system: effect of hydraulic retention time and process load.

    Science.gov (United States)

    Zhao, Ling; Yang, Dong; Zhu, Nan-Wen

    2008-12-30

    Spent Ni-Cd batteries bring a severe environmental problem that needs to be solved urgently. A novel continuous flow two-step leaching system based on bioleaching was introduced to dissolve heavy metals in batteries. It consists of an acidifying reactor which was used to culture indigenous thiobacilli and a leaching reactor which was used to leach metals from spent batteries. The indigenous acidophilic thiobacilli in sewage sludge was used as the microorganisms and the sludge itself as culture medium. Bioleaching tests at different hydraulic retention time (HRT) and process load in the leaching reactor were performed. The results showed that the longer the HRT (1, 3, 6, 9 and 15 days) was, the more time required to achieve the complete leaching of Ni, Cd and Co. The maximum dissolution of cadmium and cobalt was achieved at higher pH values (3.0-4.5) while the leaching of nickel hydroxide and nickel in metallic form (Ni0) were obtained separately in different acidity (pH 2.5-3.5). It cost about 25, 30 and more than 40 days to remove all of the three heavy metals with the process load of two, four and eight Ni-Cd batteries under the conditions that the ingoing bio-sulphuric acid was 1Ld(-1) and HRT was 3 days.

  5. Bioleaching of spent Ni-Cd batteries by continuous flow system: Effect of hydraulic retention time and process load

    Energy Technology Data Exchange (ETDEWEB)

    Zhao Ling; Yang Dong [School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240 (China); Zhu Nanwen [School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240 (China)], E-mail: nwzhu@sina.com

    2008-12-30

    Spent Ni-Cd batteries bring a severe environmental problem that needs to be solved urgently. A novel continuous flow two-step leaching system based on bioleaching was introduced to dissolve heavy metals in batteries. It consists of an acidifying reactor which was used to culture indigenous thiobacilli and a leaching reactor which was used to leach metals from spent batteries. The indigenous acidophilic thiobacilli in sewage sludge was used as the microorganisms and the sludge itself as culture medium. Bioleaching tests at different hydraulic retention time (HRT) and process load in the leaching reactor were performed. The results showed that the longer the HRT (1, 3, 6, 9 and 15 days) was, the more time required to achieve the complete leaching of Ni, Cd and Co. The maximum dissolution of cadmium and cobalt was achieved at higher pH values (3.0-4.5) while the leaching of nickel hydroxide and nickel in metallic form (Ni{sup 0}) were obtained separately in different acidity (pH 2.5-3.5). It cost about 25, 30 and more than 40 days to remove all of the three heavy metals with the process load of two, four and eight Ni-Cd batteries under the conditions that the ingoing bio-sulphuric acid was 1 L d{sup -1} and HRT was 3 days.

  6. Discovery of a thermally persistent h.c.p. solid-solution phase in the Ni-W system

    International Nuclear Information System (INIS)

    Kurz, S. J. B.; Leineweber, A.; Maisel, S. B.; Höfler, M.; Müller, S.; Mittemeijer, E. J.

    2014-01-01

    Although the accepted Ni-W phase diagram does not reveal the existence of h.c.p.-based phases, h.c.p.-like stacking sequences were observed in magnetron-co-sputtered Ni-W thin films at W contents of 20 to 25 at. %, by using transmission electron microscopy and X-ray diffraction. The occurrence of this h.c.p.-like solid-solution phase could be rationalized by first-principles calculations, showing that the vicinity of the system's ground-state line is populated with metastable h.c.p.-based superstructures in the intermediate concentration range from 20 to 50 at. % W. The h.c.p.-like stacking in Ni-W films was observed to be thermally persistent, up to temperatures as high as at least 850 K, as evidenced by extensive X-ray diffraction analyses on specimens before and after annealing treatments. The tendency of Ni-W for excessive planar faulting is discussed in the light of these new findings

  7. Analysis of phase formation in Ni-rich alloys of the Ni-Ta-W system by calorimetry, DTA, SEM, and TEM

    Energy Technology Data Exchange (ETDEWEB)

    Witusiewicz, V.T.; Hecht, U.; Warnken, N.; Fries, S.G. [Access e.V., Aachen (Germany); Hu Weiping [Inst. fuer Metallkunde und Metallphysik der RWTH Aachen (Germany)

    2006-04-15

    The partial enthalpies of dissolution of pure Ni, W and Ta in liquid ternary Ni-Ta-W alloys have been determined at (1773 {+-} 5) K using a high temperature isoperibolic calorimeter. Measurements were performed in Ni-rich alloys (from 80 to 100 at.% Ni) along sections with constant Ta:W atomic ratios 1:0, 2:1, 1:2, and 0:1. The partial enthalpies and thereby the integral enthalpy of mixing of these ternary alloys are calculated from the partial enthalpies of dissolution using SGTE Gibbs energies for pure elements as reference. The obtained thermochemical data confirm that in the investigated Ni-rich alloys the binary interactions between Ta and W as well as the ternary Ni-Ta-W interactions are negligibly small. Due to this the variation of the integral enthalpy of mixing of the ternary alloys is well described as linear combination of the constituent Ni-Ta and Ni-W binaries. Such behaviour of the ternary liquid alloys is related to a very low probability of new ternary stable phases to occur in solid state. This prediction is confirmed by differential thermal analysis, scanning electron microscopy, and transmission electron microscopy of the as-solidified and annealed samples obtained as last alloy compositions in the series of calorimetric dissolution. (orig.)

  8. Role of atomic bonding for compound and glass formation in Ni-Si, Pd-Si, and Ni-B systems

    Science.gov (United States)

    Tanaka, K.; Saito, T.; Suzuki, K.; Hasegawa, R.

    1985-11-01

    Valence electronic structures of crystalline compounds and glassy alloys of Ni silicides, Pd silicides, and Ni borides are studied by soft-x-ray spectroscopy over wide ranges of Si and B concentrations. The samples prepared include bulk compounds, glassy ribbons, and amorphous sputtered films. Silicon Kβ emissions of Ni and Pd silicides generally consist of a prominent peak fixed at ~=4.5 and ~=5.8 eV below the Fermi level EF, respectively, with a shoulder near EF which grows and shifts toward lower energy with increasing Si concentration. The former is identified as due to Si p-like states forming Si 3p-Ni 3d or Si 3p-Pd 4d bonding states while the latter as due to the corresponding antibonding states. Ni L3 and Pd L3 emissions of these silicides indicate that Ni 3d and Pd 4d states lie between the above two states. These local electronic configurations are consistent with partial-density-of-states (PDOS) calculations performed by Bisi and Calandra. Similar electronic configurations are suggested for Ni borides from B Kα and Ni L3 emissions. Differences of emission spectra between compounds and glasses of similar compositions are rather small, but some enhancement of the contribution of antibonding states to the PDOS near EF is suggested for certain glasses over that of the corresponding compounds. These features are discussed in connection with the compound stability and glass formability.

  9. Magnetoelectric coupling in the Haldane spin-chain system Dy2BaNiO5

    Science.gov (United States)

    Singh, Kiran; Basu, Tathamay; Chowki, S.; Mahapotra, N.; Iyer, Kartik K.; Paulose, P. L.; Sampathkumaran, E. V.

    2013-09-01

    We report the results of various measurements, namely magnetization, complex dielectric permittivity, and electric polarization (P), on Dy2BaNiO5 as a function of temperature (T) and magnetic field (H), apart from heat capacity (C), with the primary motivation of exploring the existence of magnetoelectric (ME) coupling among Haldane spin-chain systems. The M(T) and C(T) data establish long-range magnetic ordering at 58 K. The most noteworthy observations are: (i) Distinct anomalies are observed in the dielectric constant (ɛ') vs T and loss (tanδ) vs T at different temperatures (i.e., 12.5, 30, 50, and 58 K); at low temperatures, three magnetic-field-induced transitions are observed in ɛ' vs H at 6, 40, and 60 kOe. These transition temperatures and critical magnetic fields track those obtained from magnetization data, establishing the existence of strong magnetoelectric coupling in this compound. (ii) Correspondingly, electric polarization could be observed as a function of T and H in the magnetically ordered state, thereby indicating magnetism-induced ferroelectricity in this compound; this result suggests that this compound is a possible multiferroic material among spin =1 (nickel-containing) compounds, with successive magnetic transitions and strong magnetoelectric coupling.

  10. CIM overview. (2). ; Architecture, infrastructure, information technology. CIM soron. (2). ; Architecture, infra, joho riyo shien gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Seryo, K [IBM Japan Ltd., Tokyo (Japan)

    1991-12-10

    The materialization of computer integrated manufacturing (CIM) requires an establishment of its systematizing system, i.e., architecturer and planning of the infrastructure to support it and basic engineering to support the informational utilization. The CIM architecture is classified into management and system structure, strategic planning method, System development introduction method, etc. The infrastructure aims at epoch-makingly heightening the productivity and speed by integrating the production planning, engineering design, accounting, sales, general business and affairs, production engineering, production activities, and activities of suppliers and clients. The informational utilization support engineering comprises the management support tool, decision making support tool, application development tool, etc. What is important is to establish a system of systematizing engineering in order not to be behind the strategic activation era of information to come. 17 refs., 4 figs., 1 tab.

  11. The EFF-2 evaluation for the reaction systems n + 52Cr, 56Fe, 58Ni and 60Ni

    International Nuclear Information System (INIS)

    Uhl, M.; Gruppelaar, H.; Kamp, H.A.J. van der; Kopecky, J.; Nierop, D.

    1991-05-01

    The evaluated cross sections for incident energies between 1 and 20 MeV are essentially based on nuclear reaction model calculations. Model parameters were chosen so as to simultaneously reproduce many available experimental data. At low energies the cross sections were taken from other evaluations. Calculations consider the spherical optical model, the statistical compound nucleus model under consideration of angular momentum and parity, the exciton model for first change pre-equilibrium emission of particles and photons and a direct reaction model for in-elastic scattering. The exciton model employed accounted for angular momentum conservation. For each reaction system evaluation comprises the following cross sections: total, elastic, production of light reaction products (photons, neutrons, protons and alphas) and production of heavy reaction products (about 10 residual nuclei for each target). Furthermore included are the energy-angle distributions of the light reaction products and of the heavy reaction products (i.e. the double differential recoil spectra). (author). 34 refs.; 4 figs

  12. On cobalt effect on structural and phase transformations during tempering carbon-containing steels of Fe-Ni-Mo system

    International Nuclear Information System (INIS)

    Rakhshtadt, A.G.; Khovova, O.M.; Kan, A.V.; Perkas, M.D.; Kudryavtsev, A.N.; Rodionov, Yu.L.

    1990-01-01

    Methods of resistometry, colorimetry, X-ray diffraction chemical and electrochemical phase analyses, Moessbauer spectroscopy and field-ion mass spectrometry are used to study the nature of precipitation hardening of carbon containing Fe-Ni-Mo martensitic steels. Cobalt contribution to formation of phase composition and structural state of steels during tempering is analyzed. Realization conditions of effective combined (carbide-intermetallide) hardening of the investigated system steels are determined

  13. Atomistic modeling to investigate the favored composition for metallic glass formation in the Ca-Mg-Ni ternary system.

    Science.gov (United States)

    Zhao, S; Li, J H; An, S M; Li, S N; Liu, B X

    2017-05-17

    A realistic interatomic potential was first constructed for the Ca-Mg-Ni system and then applied to Monte Carlo simulations to predict the favored composition for metallic glass formation in the ternary system. The simulations not only predict a hexagonal composition region, within which the Ca-Mg-Ni metallic glass formation is energetically favored, but also pinpoint an optimized sub-region within which the amorphization driving force, i.e. the energy difference between the solid solution and disordered phase, is larger than that outside. The simulations further reveal that the physical origin of glass formation is the solid solution collapsing when the solute atom exceeds the critical solid solubility. Further structural analysis indicates that the pentagonal bi-pyramids dominate in the optimized sub-region. The large atomic size difference between Ca, Mg and Ni extends the short-range landscape and facilitates the development of a hybridized packing model in the medium-range, and eventually enhancing the glass formation in the system. The predictions are well supported by the experimental observations reported so far, and could be of help for designing the ternary glass formation.

  14. Mathematical structure of ocean container transport systems; Kaiyo container yuso system no suriteki kozo ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Shinkai, A [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Chikushi, Y [Nippon Telegraph and Telephone Corp., Tokyo (Japan)

    1997-10-01

    Mathematical structure of a vessel arrangement program was discussed in order to learn roles of container ships in ocean transport systems among China, NIES/ASEAN countries and Japan. Formulation is possible on a mathematical handling method for sailing route connection diagrams between ports, a transport network to indicate container movements, a service network to indicate sailing routes, and a network generalizing them. This paper describes an analysis made on the container transport system between Japan and China, taken as an example. Four ports were selected each from Japan and China, and the statistical database for fiscals 1996 and 1994 was utilized to set models for: (a) the liner network system with transshipment at the port of Shanghai and (b) the cruising route system going through the ports of Yokohama, Nagoya and Kobe. A hypothesis was set that a consortium (coordinated ship allocation) can be implemented ideally and completely. The transport network (a) is lower by 10% in total cost than the transport network (b), resulting in 1.6 times greater productivity. Actual service network is closer to the network (b), but the system can be utilized for discussing guidelines on vessel arrangement programs with which shipping companies pursue better management efficiency under a condition that the consortium can be formed. 10 refs., 6 figs., 2 tabs.

  15. Load averaging system for co-generation plant; Jikayo hatsuden setsubi ni okeru fuka heijunka system

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, Y. [Fuji Electric Co. Ltd., Tokyo (Japan)

    1995-07-30

    MAZDA Motor Corp. planed the construction of a 20.5MW co-generation plant in 1991 for responding to an increase in power demand due to expansion of the Hofu factory. On introduction of this co-generation plant, it was decided that the basic system would adopt the following. (1) A circulating fluidized bed boiler which can be operated by burning multiple kinds of fuels with minimum environmental pollution. (2) A heat accumulation system which can be operated through reception of a constant power from electric power company despite a sudden and wide range change in power demand. (3) A circulating-water exchange heat recovery system which recovers exhaust heat of the turbine plant as the hot water to be utilized for heating and air-conditioning of the factory mainly in winter. Power demand in MAZDA`s Hofu factory changes 15% per minute within a maximum range from 20MW to 8MW. This change is difficult to be followed even by an oil burning boiler excellent in load follow-up. The circulating Fluidized bed boiler employed this time is lower in the follow-up performance than the oil boiler. For the newly schemed plant, however, load averaging system named a heat accumulation system capable of responding fully to the above change has been developed. This co-generation plant satisfied the official inspection before commercial operation according the Ministerial Ordinance in 1993. Since then, with regard to the rapid load following, which was one of the initial targets, operation is now performed steadily. This paper introduces an outline of the system and operation conditions. 10 refs.

  16. Extractive separation of Al(III) and Ni(II) by Di-2-Ethylhexyl phosphoric acid-kerosene system from aqueous fluoride medium

    International Nuclear Information System (INIS)

    Islam, M.F.; Begum, D.A.; Rahman, M.; Rahman, M.S.

    2009-01-01

    In the study of the extractive separation of Al(III) and Ni(II) by di-2-ethylhexyl phosphoric acid D2EHPA-kerosene from aqueous fluoride medium, about 94% Al(III) and 2% Ni(II) were extracted with 0.3 M D2EHPA (pH 2.1 and temperature 30+-1 degree C). Extraction of Ni(II) decreased with increasing extractant concentration. D2EHPA-kerosene-fluoride system showed better extraction of Al(III) with higher extractant concentration and aqueous pH and vice versa for the extraction of Ni(II). The maximum separation factor (beta 1380) was obtained for Al(III) at 20 degree C and decreased to (beta 732) at 60 degree C. The separation of Al(III) from Ni(II) was favoured at normal temperature. Extraction followed the order Al(III), Ni(II). About 99% stripping of Al(III) was attained from the loaded 0.20 M D2EHPA. Much faster extraction of Al(III) compared to Ni(II) and preferential loading were shown by D2EHPA-kerosene in the presence of fluoride ion in the aqueous phase. Separation of Al(III) was the most outstanding from Ni-Al-F-complex solution. (author)

  17. Ab initio thermodynamic properties of stoichiometric phases in the Ni-Al system

    International Nuclear Information System (INIS)

    Arroyave, R.; Shin, D.; Liu, Z.-K.

    2005-01-01

    In this work the thermodynamic properties of Al, Ni, NiAl and Ni 3 Al were obtained through ab initio methods. Through the use of density functional theory within the generalized gradient approximation and projector augmented-wave (PAW) pseudopotentials, the 0 K energetics of the structures were calculated. The supercell method was used to calculate the vibrational contributions to the free energy. The contribution of electronic degrees of freedom to the total free energy was also included in the calculations. The resulting free energy was used to calculate the enthalpies and entropies of the structures investigated. The comparison with experimental data is satisfactory, and the calculations compare well with recent results using linear response theory

  18. Regularity in the formation of compounds in ternary R-Me-Sn systems, R - REM, Me - Fe, Co, Ni, Cu

    International Nuclear Information System (INIS)

    Skolozdra, R.V.; Komarovskaya, L.P.; Koretskaya, O.Eh.

    1992-01-01

    For the ternary alloy systems of (La, Y, Gd, Lu)-Fe-Sn, (Ce, Y, Gd)-Co-Sn, (Ce, Y, Gd, Lu)-Ni-Sn and (Pr, Gd, Lu)-Cu-Sn isothermal sections of phase diagrams were plotted within the range of 670 to 870 K. It was revealed that substitution of transition metal in the kFe-Co-Ni-Cu series led to changes both in a number of ternary stannides and their structural types. A tendency was observed in change of stannide numbers depending on quantity ratio of R and Me components. Crystallochemical analysis of compounds obtained showed that they could be treated as interstitial structures or lsuperstructures with respect to them. The results of magnetic properties measurements were used for explanation of structural features of ternary compounds considered

  19. Elastic scattering and total reaction cross section for the {sup 6}He+{sup 58}Ni system

    Energy Technology Data Exchange (ETDEWEB)

    Morcelle, V. [Instituto de Física - Universidade Federal Fluminense, 24210-346, Rio de Janeiro, Brazil and Universidade Federal de Itajubá, 35900-030, Itabira (Brazil); Lichtenthäler, R.; Lépine-Szily, A.; Guimarães, V.; Gasques, L.; Scarduelli, V.; Condori, R. Pampa; Leistenschneider, E. [Depto de Física Nuclear, Universidade de São Paulo, C.P. 66318, 05389-970, São Paulo (Brazil); Mendes Jr, D. R.; Faria, P. N. de [Instituto de Física - Universidade Federal Fluminense, 24210-346, Rio de Janeiro (Brazil); Pires, K. C. C. [Universidade Tecnológica Federal do Paraná, 86300-000, Cornélio Procópio (Brazil); Barioni, A. [Instituto de Física, Universidade Federal da Bahia, 40210-340, Bahia (Brazil); Morais, M. C. [Centro Brasileiro de Pesquisas Físicas, 22290-180, Rio de Janeiro (Brazil); Shorto, J. M. B. [Instituto de Pesquisas Energéticas e Nucleares- IPEN, 05508-000, São Paulo (Brazil); Zamora, J. C. [Departament of Physics, Technische Universität Darmstadt (Germany)

    2014-11-11

    Elastic scattering measurements of {sup 6}He + {sup 58}Ni system have been performed at the laboratory energy of 21.7 MeV. The {sup 6}He secondary beam was produced by a transfer reaction {sup 9}Be ({sup 7}Li, {sup 6}He) and impinged on {sup 58}Ni and {sup 197}Au targets, using the Radioactive Ion Beam (RIB) facility, RIBRAS, installed in the Pelletron Laboratory of the Institute of Physics of the University of São Paulo, Brazil. The elastic angular distribution was obtained in the angular range from 15° to 80° in the center of mass frame. Optical model calculations have been performed using a hybrid potential to fit the experimental data. The total reaction cross section was derived.

  20. Influence of the ion implantation on the nanoscale intermetallic phases formation in Ni-Ti system

    International Nuclear Information System (INIS)

    Kalashnikov, M.P.; Kurzina, I.A.; Bozhko, I.A.; Kozlov, E.V.; Fortuna, S.V.; Sivin, D.O.; Stepanov, I.B.; Sharkeev, Yu.P.

    2005-01-01

    Full text: The ion implantation at a high intensity mode is an effective method for modification of the surface properties of metals and alloys. Improvement of mechanical and tribological properties of irradiated materials using the high intensity implantation is connected with an element composition and microstructure modification of the surface and subsurface layers. One shows a great interest in intermetallic phase's synthesis by ion implantation, because of unique physical-mechanical properties of the intermetallic compounds. The influence of the irradiation conditions on the structural state and surface properties of implanted materials is not clear enough. The study of the factors influencing on the formation of the surface ion - alloyed layers of metal targets having the high tribological and mechanical properties by high intensity ion implantation is actual. The aim of the present work is a study of the microstructure, phase composition, physical and mechanical properties of the ion-alloyed Ni surfaces formed at high intensity implantation of Ti ions. The implantation Ti ions into Ni samples at high intensity mode was realized using ion source 'Raduga - 5'. The implantation Ti ions into Ni was carried out at accelerating voltage 20 kV for 2 h. The regimes were differed in the samples temperature (580 - 700 K), the distance from the ion implanted samples to the ion source (0.43-0.93 m) and the dose of irradiated ions (0.3·10 18 -2.9·10 18 ion/cm -2 ). The element composition of the implanted samples was analyzed by the electron spectroscopy. The structural-phase state of the Ni ion-modified layers was investigated by the transmission electron microscopy and X-ray diffraction methods. Additionally, the investigation of mechanical and tribological properties of the implanted Ni samples was carried out. It was established that the maximum thickness of the ion-alloyed nickel layers at high intensity mode allows forming the nanoscale intermetallic phases (Ni

  1. Study and development of NiAl intermetallic coating on hypo-eutectoid steel using highly activated composite granules of the Ni-Al system

    Energy Technology Data Exchange (ETDEWEB)

    Shahzad, Aamir; Zadorozhnyy, Vladislav Yu.; Pavlov, Mikhail D.; Semenov, Dmitri V.; Kaloshkin, Sergey D. [National Univ. of Science and Technology (MISIS), Moscow (Russian Federation)

    2018-01-15

    NiAl intermetallic coating thickness of about 50 μm was fabricated on hypo-eutectoid steel by mechanical alloying using pre-activated Ni-Al composite granules as coating material. First, Ni and Al powders were mixed with the composition of Ni-50 at.% Al and mechanically activated in a planetary ball mill, until the composite granules of this powder mixture, having maximum activity (9 cm sec{sup -1}), were formed after 120 min of milling at 200 rpm. The composite granules were then taken out from the planetary ball mill just before the critical time, i. e. the time at which these granules synthesize and convert to an intermetallic NiAl compound. The highly activated composite granules of Ni-Al were then put into the vial of a vibratory ball mill with the substrate on top of the chamber. After mechanical alloying for 60 min in the vibratory ball mill, the composite granules were synthesized fully and heat was produced during the synthesis which helped producing a thick and strong adhesive coating of NiAl intermetallic on the steel substrate. The main advantage of this technique is that not only is time saved but also there is no need for any post mechanical alloying process such as annealing or laser treatment etc. to get homogeneous, strongly bonded intermetallic coatings. X-ray diffraction analysis clearly indicates the formation of NiAl phase. Micro-hardness of the coating and substrate was also measured. The cross-sectional microstructure of the composite granules and the final coating were studied by scanning electron microscopy.

  2. Lifetime-determining spalling mechanisms of NiCoCrAlRe/EB-PVD zirconia TBC systems

    Energy Technology Data Exchange (ETDEWEB)

    Fritscher, K.; Schulz, U. [DLR - German Aerospace Center, Institute of Materials Research, 51170 Cologne (Germany); Leyens, C. [Technical University of Brandenburg (BTU) Cottbus, Chair of Physical Metallurgy and Materials Technology, 03046 Cottbus (Germany)

    2007-09-15

    The mechanisms that control the lifetime of thermal barrier coating (TBC) systems have been traced by two particular overlay bondcoats serving as model systems: superalloy pins (IN100, CMSX-4) with two alternative NiCoCrAlRE (RE: Hf, Y) bond coat compositions (i) NiCoCrAlY without and (ii) with co-dopants of silicon and hafnium. On top an electron-beam physical-vapor deposited (EB-PVD) yttria partially stabilized zirconia (YPSZ) TBC commonly mixed with 2 wt.% hafnia, or, rarely with 10 wt.%, was applied. The test pins were thermo-cycled at 1100 and 1150 C until failure. Identical lifetimes in cyclic tests on YPSZ TBCs with 2 (relatively high sintering rate) and 10 wt.% hafnia (relatively low sintering rate) preclude an effect of diffusion mechanisms of the YPSZ TBC on lifetime. The fit of lifetimes and test temperatures to Arrhenius-type relationships gives activation energies for failure. These energies agree with the activation energies for anion and cation diffusion in alumina for the respective bondcoat variant: (i) for the NiCoCrAlY/TBC system for O{sup 2-} diffusion in alumina, (ii) for the NiCoCrAlYSiHf/TBC system for Al{sup 3+} diffusion in alumina. SEM and EDS investigations of the thermally grown oxides (TGOs) confirm the mechanisms responsible for TBC failure as indicated by activation energies. Two categories of failure can be distinguished: (i) NiCoCrAlY coatings fail by an ''adhesive mode of failure'' along smooth bond coat/TGO interfaces driven by a critical TGO thickness. (ii) NiCoCrAlYSiHf coatings fail later and more reluctantly by a ''cohesive'' crack mode via de-cohesion at the TGO/TBC interface. In the latter case a quasi-integrity of the crack-affected TGO is lengthily maintained up to failure by a crack-pinning mechanism which runs via Al{sup 3+} supply from the bondcoat. (Abstract Copyright [2007], Wiley Periodicals, Inc.) [German] Die Mechanismen, welche die Lebensdauer von Waermedaemmschichtsystemen

  3. Study on a non-powered heat transporting system; Mudoryoku netsu hanso system ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kamiya, Y [Kanto Gakuin University, Yokohama (Japan)

    1997-11-25

    This paper proposes a non-powered heat transportation (HT) system. The system is composed of an evaporator, condenser, receiver, switching chamber (SC) and 3 check valves which are connected with each other by vapor and liquid tubes. Condensed liquid supercooled in the condenser exists in the receiver forming a saturated condition at a concerned temperature, and condensed liquid is lifted up from the condenser to the receiver by pressure difference between the evaporator and receiver. Generally evaporation pressure is higher by pressure difference between liquid levels in the condenser and receiver. The lifted up amount of condensed liquid increases with evaporation pressure, resulting in an increase in heating surface area of the condenser and amount of condensed liquid. A proper evaporator pressure is thus retained by reduction of evaporation pressure. SC is connected with the receiver and evaporator, and switches high- and low-pressure valves by motion of an inner float to transport heat from the evaporator to condenser. Reverse HT is possible as normal latent HT by installing a bypass. Some problems are also described. 2 refs., 8 figs.

  4. Hydrogen sorption properties of the Lasub(1-x)Casub(x)Ni5 and La(Nisub(1-x)Cusub(x))5 systems

    International Nuclear Information System (INIS)

    Shinar, J.; Shaltiel, D.; Davidov, D.; Grayevsky, A.

    1978-01-01

    The hydrogen sorption properties of the Lasub(1-x)Casub(x)Ni 5 and La(Nisub(1-x)Cusub(x)) 5 systems were investigated at various temperatures and at pressures up to 20 atm. It was found that initial substitution of La by Ca in LaNi 5 caused an increase in the hydrogen dissociation pressure, up to Casub(0.3)Lasub(0.7)Ni 5 . In the Casub(0.3)Lasub(0.7)Ni 5 -CaNi 5 range, the dissociation pressure decreased. The absorption capacity of CaNi 5 was dependent on the purity of the sample and increased significantly at low temperatures. The stability of La(Nisub(1-x)Cusub(x)) 5 hydrides increased linearly from LaNi 5 to LaCu 5 . These features are discussed in the light of existing models of ternary and pseudoternary hydride stability. Finally, the role of the measured change in entropy ΔS in determining the occupied interstitial sites in the hydride is outlined and discussed in relation to these systems. (Auth.)

  5. A new BODIPY/nanoparticle/Ni affinity system for binding of cytochrome c

    Energy Technology Data Exchange (ETDEWEB)

    Maltas, Esra, E-mail: maltasesra@gmail.com [Selcuk University, Faculty of Science, Department of Chemistry, 42075 Konya (Turkey); Selcuk University, Faculty of Science, Department of Biochemistry, 42075 Konya (Turkey); Kursunlu, Ahmed Nuri [Selcuk University, Faculty of Science, Department of Chemistry, 42075 Konya (Turkey); Arslan, Gulsin [Selcuk University, Faculty of Science, Department of Biochemistry, 42075 Konya (Turkey); Selcuk University, Advanced Research Technology and Application Center, 42075 Konya (Turkey); Ozmen, Mustafa [Selcuk University, Faculty of Science, Department of Chemistry, 42075 Konya (Turkey); Selcuk University, Advanced Research Technology and Application Center, 42075 Konya (Turkey)

    2015-09-15

    Highlights: • BODIPY was synthesized, and then attached to magnetic nanoparticles. • Ni(II) ions were chelated on prepared material. • The binding of cytochrome c to obtained material was studied. - Abstract: In this study, 3,5-{Bis[4,4-difluoro, 8-(2,6-diethyl, 1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene)]}benzoylchloride (BODIPY) was synthesized for the improving of a new immobilized metal affinity supporting material. Firstly, the synthesized BODIPY was immobilized on iron oxide superparamagnetic nanoparticles (SPIONs) and then, Ni(II) ions were chelated with the active terminals of BODIPY on nanoparticles surfaces to prepare an immobilized metal affinity (IMA) adsorbent for protein adsorption. The amount of BODIPY coated on SPIONs was about 29.7 μM at 10 mg nanoparticles. 738 μmol of Ni(II) ions were loaded to 10 mg of the SPIONs/BODIPY. The binding amount of cytochrome c was found to be 170 μg to the SPIONs/BODIPY/Ni at pH 7.4. The binding amount of the molecules on SPIONs was analyzed by using UV–vis, fluorescence and atomic absorption spectroscopy. The characterization of the prepared surfaces was performed by FT-IR, SEM and TEM.

  6. Thermochemical and phase diagram studies of the Sn–Zn–Ni system

    Czech Academy of Sciences Publication Activity Database

    Gandova, V.D.; Brož, P.; Buršík, Jiří; Vassilev, G.P.

    2011-01-01

    Roč. 524, 1-2 (2011), s. 47-55 ISSN 0040-6031 Institutional research plan: CEZ:AV0Z20410507 Keywords : DSC * solders * Sn-Zn-Ni phase diagram Subject RIV: BJ - Thermodynamics Impact factor: 1.805, year: 2011

  7. Electronic network modeling of rechargeable batteries: II: The NiCd system

    NARCIS (Netherlands)

    Notten, P.H.L.; Kruijt, W.S.; Bergveld, H.J.

    1998-01-01

    Based on the concept of a defined sealed rechargeable NiCd battery, the mathematics of the various electrochemical and physical processes occurring inside the battery are described. Subsequently, these sets of mathematical equations are clustered and converted into an electronic network model.

  8. Martensitic transformations in Ni-Mn-Ga system affected by external fields

    International Nuclear Information System (INIS)

    Chernenko, V.; Babii, O.; L'vov, V.; McCormick, P.G.

    2000-01-01

    The influence of hydrostatic pressure, uniaxial stress and magnetic field on the martensitic transformation temperatures for the ferromagnetic single crystalline Ni-Mn-Ga alloys is studied. It is shown that the experimental results are satisfactorily described by the Landau theory. Ni-Mn-Ga L2 1 -type ordered alloys exhibit a number of the first order and weak first order structural transformations in a ferromagnetic or paramagnetic parent phase depending on the alloy composition and being either thermally or stress activated. Most of these phase transformations are of the martensitic type, i.e., they are accompanied by the spontaneous elastic strains forming a multicomponent order parameter in the Landau expansion for the Gibbs potential. In this work we analyze the influence of the external fields (mechanical and magnetic) on the martensitic transformation (MT) from cubic parent phase (P) to five-layered martensitic one (5M-martensite) usually exhibited by the ferromagnetic ordered Ni-Mn-Ga alloys. In accordance with, we treat the 5M-martensite as a twinned tetragonal phase and, so, describe the experimental results in the framework of the theory of cubic-tetragonal MT. The original experimental data of high magnetic field influence on MT in near stoichiometric Ni 2 MnGa compound are presented to compare with the theoretical estimations. (orig.)

  9. Multiparticle states in the S = 1 chain system CsNiCl3

    DEFF Research Database (Denmark)

    Kenzelmann, M.; Cowley, R.A.; Buyers, W.J.L.

    2001-01-01

    A continuum of magnetic states has been observed by neutron scattering from the spin-1 chain compound CsNiCl3 in its disordered gapped one-dimensional phase. Results using both triple-axis and time-of-flight spectrometers show that around the antiferromagnetic point Q(c) = pi, the continuum lies...

  10. X-ray investigation of intermetallides and their hydrides under hydrogen pressure in H2-LaNi5 system

    International Nuclear Information System (INIS)

    Karonik, V.V.; Tsypin, M.I.; Prokof'ev, M.V.; Kazakov, D.N.

    1983-01-01

    X-ray phase analysis has been used to investigate phase composition of LaNi 5 -H 2 system; comparison of X-ray diffraction data with the results of plotting absorption and desorption isotherms is conducted. Technique of the X-ray diffraction study of intermetallide-hydrogen system using special X-ray chamber to diffractometer DRON-1.5 (GUR-5) is worked out. The parameters of elementary cell of the LaNisub(5)Hsub(6.2) hydride are determined: a=0.541(2) pm, c=0.430(2) nm, c/a=0.795, V=0.109 nm 3 (hexagonal syngony)

  11. Temperature dependence of the short-range order parameter and the concentration dependence of the order disorder temperature for Ni-Pt and Ni-Fe systems in the improved statistical pseudopotential approximation

    International Nuclear Information System (INIS)

    Khwaja, F.A.

    1980-08-01

    The calculations for the temperature dependence of the first shell short-range order (SRO) parameter for Ni 3 Fe using the cubic approximation of Tahir Kheli, and the concentration dependence of order-disorder temperature Tsub(c) for Ni-Fe and Ni-Pt systems using the linear approximation, have been carried out in the framework of pseudopotential theory. It is shown that the cubic approximation yields a good agreement between the theoretical prediction of the α 1 and the experimental data. Results for the concentration dependence of the Tsub(c) show that improvements in the statistical pseudo-potential approach are essential to achieve a good agreement with experiment. (author)

  12. Laser cutting system in bridge fabricating line; Kyoryo seisaku line ni okeru laser no setsudan system

    Energy Technology Data Exchange (ETDEWEB)

    Kitaguchi, Y.; Yokotani, K. [Hitachi Zosen Corp., Osaka (Japan)

    1994-11-01

    This paper describes the laser cutting system established at a new advanced plant that was constructed by Hitachi Shipbuilding and Engineering Co., Ltd. in 1993. At the plant, the cutting line consists of four NC cutting lines: the plasma cutting machine, gas cutting machine, frame planer, and laser cutting machine. The laser cutting machine is used to cut complex shapes of relatively thin (6 - 16 mm) materials with high accuracy. The machine consists of a 3 kW CO2 laser oscillator mounted gantry type NC cutter and a slat conveyor of about 30 m long, with the maximum cutting width of 3.6 m. The NC cutting machine is provided with the automatic printing function using NC data, marking function, scheduled operation function, steel plate detector, and coordinate rotation function, etc. These functions enable unattended operation of the machine to cut multiple materials. This NC laser cutting line has the same performance data collection function for data during the operating time as other production lines. Therefore, the NC laser cutting line can be subjected to the realtime centralized control together with the other lines. All these technologies have provided high accuracy and efficiency for production as well as an environment in which many female operators can successfully work. 10 figs., 4 tabs.

  13. Typical failures of CuNi 90/10 seawater tubing systems and how to avoid them

    Energy Technology Data Exchange (ETDEWEB)

    Schleich, Wilhelm [Technical Advisory Service, KM Europa Metal AG, Klosterstr. 29, 49074 Osnabrueck (Germany)

    2004-07-01

    For many decades, copper-nickel alloy CuNi 90/10 (UNS C70600) has extensively been used as a piping material for seawater systems in shipbuilding, offshore, and desalination industries. Attractive characteristics of this alloy combine excellent resistance to uniform corrosion, remarkable resistance to localised corrosion in chlorinated seawater, and higher erosion resistance than other copper alloys and steel. Furthermore, CuNi 90/10 is resistant to biofouling providing various economic benefits. In spite of the appropriate properties of the alloy, instances of failure have been experienced in practice. The reasons are mostly attributed to the composition and production of CuNi 90/10 products compounds, occurrence of erosion-corrosion and corrosion damage in polluted waters. This paper covers important areas which have to be considered to ensure successful application of the alloy for seawater tubing. For this purpose, the optimum and critical operating conditions are evaluated. It includes metallurgical, design and fabrication considerations. For the prevention of erosion-corrosion, the importance of hydrodynamics is demonstrated. In addition, commissioning, shut-down and start-up measures are compiled that are necessary for the establishment and re-establishment of the protective layer. (author)

  14. Ab initio study of the compound-energy modeling of multisublattice structures: The (hP6) Ni{sub 2}In-type intermetallics of the Ni–In–Sn system

    Energy Technology Data Exchange (ETDEWEB)

    Ramos de Debiaggi, S., E-mail: susana.ramos@fain.uncoma.edu.ar [Facultad de Ingeniería, Universidad Nacional del Comahue, Buenos Aires 1400, 8300 Neuquén (Argentina); Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas – CONICET-UNCo (Argentina); González Lemus, N.V. [Facultad de Ingeniería, Universidad Nacional del Comahue, Buenos Aires 1400, 8300 Neuquén (Argentina); Deluque Toro, C. [Grupo de Nuevos Materiales, Universidad de la Guajira, Riohacha (Colombia); Fernández Guillermet, A. [CONICET - Instituto Balseiro, Centro Atómico Bariloche, Avda. Bustillo 9500, 8400 Bariloche (Argentina)

    2015-01-15

    Highlights: • A DFT study of the compounds involved in CALPHAD modeling of the Ni–In–Sn (hP6) phase. • Several three-sublattice compounds of Ni, In, Sn and vacancies are studied ab initio. • Structural, cohesive and thermodynamic properties and the electronic DOS are reported. • Trends in calculated properties are correlated with changes in electronic structure. • A picture of the chemical bonding trends for these s-p/d type compounds is discussed. - Abstract: The thermodynamic modeling of non-stoichiometric, multisublattice intermetallic phases using the Compound-Energy Formalism (CEF) involves the determination of parameters representing the Gibbs energy (G{sub m}) of binary compounds, the so-called “end-member compounds” (EMCs), which are often metastable or hypothetical. In current CALPHAD (i.e., “Calculation of Phase Diagrams”) work, these quantities are treated as free parameters to be determined by searching for the best fit to the available information in the optimization procedure. The general purpose of this paper is to propose a theoretical approach to the study of the EMCs which makes use of density-functional-theory (DFT) ab initio calculations. The present method is applied to the EMCs involved in the CEF modeling of the non-stoichiometric (hP6) Ni{sub 2}In-structure type phase of the Ni–In and Ni–In–Sn systems using the three-sublattice models (Ni){sub 1}(Ni,Va){sub 1}(In,Ni){sub 1} and (Ni,Va){sub 1}(Ni,Va){sub 1}(In,Ni,Sn){sub 1}, respectively. By means of systematic ab initio projected augmented waves (PAW) calculations using the VASP code we study the EMCs involved in the CEF formulations of the G{sub m} for this phase in the binary and the ternary systems. Specifically, we study the twelve EMCs corresponding to the following sublattice occupations: (Ni){sub 1}(Ni){sub 1}(In){sub 1}, which is usually described as Ni:Ni:In (i.e., a compound with formula “Ni{sub 2}In”), Ni:Ni:Ni (i.e., “Ni{sub 3}”), Ni:Ni:Sn (“Ni

  15. Ab initio study of the compound-energy modeling of multisublattice structures: The (hP6) Ni2In-type intermetallics of the Ni–In–Sn system

    International Nuclear Information System (INIS)

    Ramos de Debiaggi, S.; González Lemus, N.V.; Deluque Toro, C.; Fernández Guillermet, A.

    2015-01-01

    Highlights: • A DFT study of the compounds involved in CALPHAD modeling of the Ni–In–Sn (hP6) phase. • Several three-sublattice compounds of Ni, In, Sn and vacancies are studied ab initio. • Structural, cohesive and thermodynamic properties and the electronic DOS are reported. • Trends in calculated properties are correlated with changes in electronic structure. • A picture of the chemical bonding trends for these s-p/d type compounds is discussed. - Abstract: The thermodynamic modeling of non-stoichiometric, multisublattice intermetallic phases using the Compound-Energy Formalism (CEF) involves the determination of parameters representing the Gibbs energy (G m ) of binary compounds, the so-called “end-member compounds” (EMCs), which are often metastable or hypothetical. In current CALPHAD (i.e., “Calculation of Phase Diagrams”) work, these quantities are treated as free parameters to be determined by searching for the best fit to the available information in the optimization procedure. The general purpose of this paper is to propose a theoretical approach to the study of the EMCs which makes use of density-functional-theory (DFT) ab initio calculations. The present method is applied to the EMCs involved in the CEF modeling of the non-stoichiometric (hP6) Ni 2 In-structure type phase of the Ni–In and Ni–In–Sn systems using the three-sublattice models (Ni) 1 (Ni,Va) 1 (In,Ni) 1 and (Ni,Va) 1 (Ni,Va) 1 (In,Ni,Sn) 1 , respectively. By means of systematic ab initio projected augmented waves (PAW) calculations using the VASP code we study the EMCs involved in the CEF formulations of the G m for this phase in the binary and the ternary systems. Specifically, we study the twelve EMCs corresponding to the following sublattice occupations: (Ni) 1 (Ni) 1 (In) 1 , which is usually described as Ni:Ni:In (i.e., a compound with formula “Ni 2 In”), Ni:Ni:Ni (i.e., “Ni 3 ”), Ni:Ni:Sn (“Ni 2 Sn”), Ni:Va:In (i.e., “NiIn”), Ni:Va:Ni (i

  16. Thermodynamic and topological instability approaches for forecasting glass-forming ability in the ternary Al-Ni-Y system

    International Nuclear Information System (INIS)

    Oliveira, M.F. de; Aliaga, L.C.R.; Bolfarini, C.; Botta, W.J.; Kiminami, C.S.

    2008-01-01

    A thermodynamic approach to predict bulk glass-forming compositions in binary metallic systems was recently proposed. In this approach, the parameter γ* = ΔH amor /(ΔH inter - ΔH amor ) indicates the glass-forming ability (GFA) from the standpoint of the driving force to form different competing phases, and ΔH amor and ΔH inter are the enthalpies for glass and intermetallic formation, respectively. Good glass-forming compositions should have a large negative enthalpy for glass formation and a very small difference for intermetallic formation, thus making the glassy phase easily reachable even under low cooling rates. The γ* parameter showed a good correlation with GFA experimental data in the Ni-Nb binary system. In this work, a simple extension of the γ* parameter is applied in the ternary Al-Ni-Y system. The calculated γ* isocontours in the ternary diagram are compared with experimental results of glass formation in that system. Despite some misfitting, the best glass formers are found quite close to the highest γ* values, leading to the conclusion that this thermodynamic approach can be extended to ternary systems, serving as a useful tool for the development of new glass-forming compositions. Finally the thermodynamic approach is compared with the topological instability criteria used to predict the thermal behavior of glassy Al alloys

  17. Ni-Based Catalysts for Low Temperature Methane Steam Reforming: Recent Results on Ni-Au and Comparison with Other Bi-Metallic Systems

    Directory of Open Access Journals (Sweden)

    Anna M. Venezia

    2013-06-01

    Full Text Available Steam reforming of light hydrocarbons provides a promising method for hydrogen production. Ni-based catalysts are so far the best and the most commonly used catalysts for steam reforming because of their acceptably high activity and significantly lower cost in comparison with alternative precious metal-based catalysts. However, nickel catalysts are susceptible to deactivation from the deposition of carbon, even when operating at steam-to-carbon ratios predicted to be thermodynamically outside of the carbon-forming regime. Reactivity and deactivation by carbon formation can be tuned by modifying Ni surfaces with a second metal, such as Au through alloy formation. In the present review, we summarize the very recent progress in the design, synthesis, and characterization of supported bimetallic Ni-based catalysts for steam reforming. The progress in the modification of Ni with noble metals (such as Au and Ag is discussed in terms of preparation, characterization and pretreatment methods. Moreover, the comparison with the effects of other metals (such as Sn, Cu, Co, Mo, Fe, Gd and B is addressed. The differences of catalytic activity, thermal stability and carbon species between bimetallic and monometallic Ni-based catalysts are also briefly shown.

  18. Influence of static and dynamic dipolar fields in bulk YIG/thin film NiFe systems probed via spin rectification effect

    Energy Technology Data Exchange (ETDEWEB)

    Soh, Wee Tee, E-mail: a0046479@u.nus.edu [Center for Superconducting and Magnetic Materials, Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117551 (Singapore); Tay, Z.J. [Center for Superconducting and Magnetic Materials, Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117551 (Singapore); Yakovlev, N.L. [Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602 (Singapore); Peng, Bin [State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054 (China); Ong, C.K. [Center for Superconducting and Magnetic Materials, Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117551 (Singapore); Temasek Laboratories, National University of Singapore, 5A Engineering Drive 2, Singapore 117411 (Singapore)

    2017-03-15

    The characteristics of the static and dynamic components of the dipolar fields originating from a bulk polycrystalline yttrium iron garnet (YIG) substrate are probed by depositing a NiFe (Permalloy) layer on it, which acts as a detector. By measuring dc voltages generated via spin rectification effect (SRE) within the NiFe layer under microwave excitation, we characterize the influence of dipolar fields from bulk YIG on the NiFe layer. It is found that the dynamic YIG dipolar fields modify the self-SRE of NiFe, driving its own rectification voltages within the NiFe layer, an effect we term as non-local SRE. This non-local SRE only occurs near the simultaneous resonance of both YIG and NiFe. On the other hand, the static dipolar field from YIG manifests itself as a negative anisotropy in the NiFe layer which shifts the latter’s ferromagnetic resonance frequency. - Highlights: • We demonstrate the quantification of both the static and dynamic components of the dipolar fields due to a YIG slab. • The detection and characterisation of such dipolar fields are important in many magnetic applications such as magnonics. • The dipolar fields can pose potential pitfalls if not properly considered in certain spin-electronics systems.

  19. Nuclear fragmentation in central collisions: Ni + Au from 32 to 90 A*MeV; Fragmentation dans les collisions centrales du systeme Ni + Au de 32 a 90 A MeV

    Energy Technology Data Exchange (ETDEWEB)

    Bellaize, N

    2000-11-03

    Heavy ion collisions are one of tools for studying nuclear system far away from its equilibrium state. This work concerns the most violent collisions in the Ni + Au system for incident energies ranging from 32 up to 90 AMeV. These events were detected with the multidetector INDRA and selected by the Principal Component Analysis (multidimensional analysis). This method classifies the events according their detection features and their degree of dissipation. We observed two deexcitation mechanisms: a fusion/fission - evaporation process and a multifragmentation process. Those two coexist from 32 to 52 AMeV whereas only one subsists at 90 AMeV. For those two mechanisms, an component was observed which seems to be linked to the initial phase of the reaction. The energy fluctuations of this component leads to variations in the energy deposit which determines the deexcitation of the system. The experimental multifragmentation data of the Ni + Au system (52 and 90 AMeV) were compared to the predictions of a statistical model and to the experimental data of the system Xe + Sn at 50 AMeV (also detected with INDRA). These comparisons show the lack of collective radial energy for fragments (Z{>=}10) in the Ni + Au system, and show that the degree of multifragmentation depends of the thermal excitation energy. Mean kinetic energies of particles and lights fragments (Z{>=}10) are larger in the Ni + Au system than the Xe + Sn system. This observation shows that these particles are more sensitive to the entrance channel for an asymmetric system than for a symmetric system (for the same number of nucleons). (author)

  20. Structural high-temperature and (βNiAl+γ)-alloys based on Ni-Al-Co-Me systems with an improved low-temperature ductility

    International Nuclear Information System (INIS)

    Povarova, K.B.; Kazanskaya, N.K.; Drozdov, A.A.; Lomberg, B.S.; Gerasimov, V.V.

    2001-01-01

    The βNiAl-based alloys (B2) have lower density higher resistance to oxidation, and higher melting temperature relative to those of Ni-superalloys or γ'Ni 3 Al-base alloys. An improved low-temperature ductility of advanced Ni-AI-Co-M β+γ alloys(El=9-16 % at 293-1173 K is achieved due to the formation γ-Ni solid solution intergranular interlayers of eutectic origin. Secondary γ and/or γ' precipitates form in the grains of the supersaturated β-solid solution upon heat treatment at 1473-1573 K and 1073-1173 K. The limiting contents of alloying elements (Ti, Hf, Nb, Ta, Cr, Mo) for the (β+γ) alloys Ni - (19-29) % AI - (22-35) % Co, are determined which allowed to avoid the formation of primary γ'-phase (decrease solidus temperature ≤1643 K) and hard phases of the types σ, η and δ (decrease ductility). Alloying affects the morphology of the secondary γ and γ' precipitates: globular equiaxed precipitates are formed in the alloys containing Cr, Mo, and needle precipitates are formed in alloys alloys containing γ'-forming elements Nb, Ta and, especially, Ti and Hf. After directional solidification, (β+γ')-alloys have directed columnar special structure with a low extension of transverse grain boundaries. This microstructure allows one to increase UTS, by a factor 1,5-2 and long-term strength (time to rupture increase by a factor of 5-10 at 1173 K). (author)

  1. Sustainability assessment and comparison of waste management systems: The Cities of Sofia and Niš case studies.

    Science.gov (United States)

    Milutinović, Biljana; Stefanović, Gordana; Kyoseva, Vanya; Yordanova, Dilyana; Dombalov, Ivan

    2016-09-01

    Sustainability assessment of a waste management system is a very complex problem for numerous reasons. Firstly, it is a problem of environmental assessment, economic viability and social acceptability, and also a choice of the most practical waste treatment technique, taking into account all the specific areas in which a waste management system is implemented. For these reasons, among others, it is very important to benchmark, cooperate and exchange experiences in areas with similar characteristics. In this study, a comparison of waste management scenarios in the Cities of Niš and Sofia was performed. Based on the amount and composition of municipal solid waste, and taking into account local specifics (economic conditions, social acceptance, etc.), different scenarios were developed: landfilling without energy recovery, landfilling with energy recovery, mechanical-biological treatment, anaerobic digestion with biogas utilization and incineration with energy recovery. Scenario ranking was done using multi-criteria analysis and 12 indicators were chosen as the criteria. The obtained results show that the most sustainable scenario in both case studies is the mechanical-biological treatment (recycling, composting and Refuse Derived Fuel production). Having in mind that this scenario is the current waste management system in Sofia, these results can help decision-makers in the City of Niš in choosing a successful and sustainable waste management system. © The Author(s) 2016.

  2. Electrochemical Impedance Spectroscopy Investigation of the Anodic Functionalities and Processes in LSCM-CGO-Ni Systems

    KAUST Repository

    Boulfrad, Samir

    2015-07-17

    Electrochemical impedance spectroscopy was used to characterize anode compositions made of (La0.75Sr0.25)0.97Cr0.5Mn0.5O3 (LSCM) and gadolinia doped ceria (CGO) with and without additional submicron Ni, or exsoluted Ni nanoparticles. In addition, the effects of the anode gas flow rate and the working temperature were investigated. Higher content of the ionic conductor leads to a decrease of the impedance in the frequency range from 100 Hz to 10 Hz. The effect of the catalyst component was investigated while keeping the electronic conductivity unchanged in the tested materials. Enhanced catalytic activity was demonstrated to considerably decrease the impedance especially in the frequency range between 100 Hz to 1 Hz. The change in the gas flow rate affects mainly the impedance bellow 1 Hz. © The Electrochemical Society.

  3. The Coulomb-nuclear force interference in the system 32S + 60Ni

    International Nuclear Information System (INIS)

    Dannhaeuser, G.

    1980-01-01

    For the reaction 60 Ni( 32 S, 32 S*) 60 Ni* using particle-γ-coincidences the excitation functions of 32 S(2 + 1 ) and 60 Ni(2 + 1 ) for projectile energies of 70-100 MeV as well as with Si single counters the angular distribution of the elastically and inelastically scattered 32 S ions for incident energies of 90, 95, and 100 MeV were measured. A comparison of the measurements with the results of different computer codes led to following results: 1.) At the determination of the static quadrupole moment Q 2 of 32 S using the reorientation effect the influence of the nuclear force can be neglected for projectile energies Esub(P) 32 S the value Q 2 = -0.18 +- 0.04 eb was found. (Hereby destructive interference with the virtual excitation of the 2 + 2 -state is assumed). 3.) For projectile energies Esub(P) >= 72 MeV at which the excitation by nuclear forces was small against the Coulomb excitation, an evaluation of the excitation function of 32 S(2 + 1 ) by the semiclassical code NCL, which regards the influence of the nuclear interaction approximatively, yielded values for the static quadrupole moment, which agree within the measurement errors with the above value. 4.) For the quantitative analysis of the measured angular distributions a quantum mechanical CC-code was required. 5.) Using the semiclassical CC-code NCL an illustrative and detailed interpretation of the excitation functions of 32 S(2 + 1 ) and 60 Ni(2 + 1 ) could be given. 6.) The code NCL allows the study of the influence of the Coulomb-nuclear force interference on the temporal behaviour of the excitation process. 7.) Using the code NCL the angular distribution of the decay γ quanta for a fixed particle-scattering angle theta approx. 0 in dependence on the incident energy was calculated. (orig.) [de

  4. Basic studies on computer aided concurrent engineering for hull structure design and piping design; Kakugi ittai wo koryoshita doji heikotekina sekkei no shien ni kansuru kisoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Aoyama, K.; Sawada, K. [The University of Tokyo, Tokyo (Japan)

    1996-12-31

    Considering integrated hull and piping design in shipbuilding industry as a good example for concurrent engineering (CE), discussions were given on a computer aided method to perform integrated hull and piping design smoothly. When CE aiding by means of a computer is considered, it is important to discuss a method for information management not only for `utilization of product models`, but also for `maintaining consistency between items of product information` and `concurrent utilization and production of product information` in concurrent designs. For the CE aided information management, utilization and production of the product information is effective if restrictive relationship between items of product information, and design functions are made clear. Definitions were given on the restrictive relationship between items of product information and `restrictive relationship information` that has `decision/provisional decision`, `date and time`, `designer` and `design functions`. Furthermore, `comprehensive relationship between items of product information` that can be produced from the restrictive relationship information was defined as a `restrictive network`. Utilizing the restrictive relationship between items of product information for CE aiding is effective. 9 refs., 14 figs.

  5. Basic studies on computer aided concurrent engineering for hull structure design and piping design; Kakugi ittai wo koryoshita doji heikotekina sekkei no shien ni kansuru kisoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Aoyama, K; Sawada, K [The University of Tokyo, Tokyo (Japan)

    1997-12-31

    Considering integrated hull and piping design in shipbuilding industry as a good example for concurrent engineering (CE), discussions were given on a computer aided method to perform integrated hull and piping design smoothly. When CE aiding by means of a computer is considered, it is important to discuss a method for information management not only for `utilization of product models`, but also for `maintaining consistency between items of product information` and `concurrent utilization and production of product information` in concurrent designs. For the CE aided information management, utilization and production of the product information is effective if restrictive relationship between items of product information, and design functions are made clear. Definitions were given on the restrictive relationship between items of product information and `restrictive relationship information` that has `decision/provisional decision`, `date and time`, `designer` and `design functions`. Furthermore, `comprehensive relationship between items of product information` that can be produced from the restrictive relationship information was defined as a `restrictive network`. Utilizing the restrictive relationship between items of product information for CE aiding is effective. 9 refs., 14 figs.

  6. Stability of an amorphous alloy of the Mm-Al-Ni-Cu system

    Directory of Open Access Journals (Sweden)

    Carlos Triveño Rios

    2012-10-01

    Full Text Available An investigation was made of the stability of melt-spun ribbons of Mm55Al25Ni10Cu10 (Mm = Mischmetal amorphous alloy. The structural transformations that occurred during heating were studied using a combination of X-ray diffraction (XRD and differential scanning calorimetry (DSC. Crystallization took place through a multi-stage process. The first stage of transformation corresponded to the formation of a metastable phase followed by cfc-Al precipitation, while in the second stage, exothermic transformations led to the formation of complex and unidentified Mm(Cu, Ni and MmAl(Cu, Ni phases. The transformation curves recorded from isothermal treatments at 226 °C and 232 °C indicated that crystallization occurred through nucleation and growth, with diffusion-controlled growth occurring in the first crystallization stage. The supercooled liquid region, ∆Tx, at 40 K/min was ~80 K. This value was obtained by the substitution of Mm (=Ce + La + Nd + Pr for La or Ce, saving chemical element-related costs.

  7. The influence of transfer reactions on the sub-barrier fusion enhancement in the systems {sup 58.64}Ni +, {sup 92,100}Mo

    Energy Technology Data Exchange (ETDEWEB)

    Rehm, K.E.; Jiang, C.L.; Esbensen, H. [and others

    1995-08-01

    High resolution experiments performed during the past few years demonstrated that the various reaction modes occurring in heavy ion collisions can strongly influence each other. This interrelation of the different reaction modes brings a nuclear structure dependence to the fusion and deep-inelastic channels that were previously described in the framework of pure statistical models. In order to fully understand the interrelation between these reaction channels, a complete set of measurements including elastic and inelastic scattering, few-nucleon transfer and fusion is required. In continuation of our earlier measurements of the fusion cross sections in the system {sup 58,64}Ni + {sup 92,100}Mo we finished the studies of the quasielastic process in these systems. The experiments were done in inverse reaction kinematics using the split-pole spectrograph with its hybrid focal-plane detector for particle identification. The experiments with {sup 100}Mo beams were performed previously. First test runs with {sup 92}Mo showed the possible interference with {sup 98}Mo ions which could be eliminated by using the 13{sup +} charge state from the ECR source. The data from these experiments were completely analyzed. The smallest transfer cross sections are observed for the systems {sup 64}Ni + {sup 100}Mo and {sup 58}Ni + {sup 92}Mo, i.e., the most neutron-rich and neutron-deficient systems, respectively. For the other systems, {sup 64}Ni + {sup 92}Mo and {sup 58}Ni + {sup 100}Mo, the transfer cross sections at energies close to the barrier are about of equal magnitude. This observation does not correlate with the deviation of the experimental fusion cross sections from the coupled-channels predictions. While for {sup 58}Ni + {sup 100}Mo discrepancies between the experimental and theoretical fusion cross sections are observed, the system {sup 64}Ni + {sup 92}Mo which shows about the same transfer yields, is quite well described by the coupled-channels calculations.

  8. Transport, Thermal, and Magnetic Properties of YbNi3X9 (X = Al, Ga): A Newly Synthesized Yb-Based Kondo Lattice System

    Science.gov (United States)

    Yamashita, Tetsuro; Miyazaki, Ryoichi; Aoki, Yuji; Ohara, Shigeo

    2012-03-01

    We have succeeded in synthesizing a new Yb-based Kondo lattice system, YbNi3X9 (X = Al, Ga). Our study reveals that YbNi3Al9 shows typical features of a heavy-fermion antiferromagnet with a Néel temperature of TN = 3.4 K. All of the properties reflect a competition between the Kondo effect and the crystalline electric field (CEF) effect. The moderate heavy-fermion state leads to an enhanced Sommerfeld coefficient of 100 mJ/(mol\\cdotK2), even if ordered antiferromagnetically. On the other hand, the isostructural gallide YbNi3Ga9 is an intermediate-valence system with a Kondo temperature of TK = 570 K. A large hybridization scale can overcome the CEF splitting energy, and a moderately heavy Fermi-liquid ground state with high local moment degeneracy should form at low temperatures. Note that the quality of single-crystalline YbNi3X9 is extremely high compared with those of other Yb-based Kondo lattice compounds. We conclude that YbNi3X9 is a suitable system for investigating the electronic structure of Yb-based Kondo lattice systems from a heavy-fermion system with an antiferromagnetically ordered ground state to an intermediate-valence system.

  9. Applicability of a dilute quaternary model in interpreting the thermodynamic properties of the Fe-Ni-Ta-N system

    International Nuclear Information System (INIS)

    Jayaganthan, R.; Hajra, J.P.

    1997-01-01

    Interaction parameter formalism is considered to be important for representation of the excess thermodynamic properties of multi-component systems. In the present article, the same method as adopted in their earlier article has been used for deducing the partials of the Quatenary System. The derivation of lnγ 1 , lnγ 2 , lnγ 3 and lnγ 4 of the quaternary system involves extensive summation of various infinite series pertaining to first order and quaternary parameters in order to preserve thermodynamic consistency. Although the derivation and consistency of the partials are described elsewhere, a brief outline of the latter with an emphasis of their applicability to the experimental data of the Fe-Ni-Ta-N system in the temperature range of 1,796--1,983K are presented

  10. Study of Nd:YAG laser annealing of electroless Ni-P film on spiegel-iron plate by Taguchi method and grey system theory

    Energy Technology Data Exchange (ETDEWEB)

    Liu, W.L. [Department of Materials Science and Engineering, National Formosa University, 64, Wunhua Road, Huwei, Yunlin 632, Taiwan (China); Chien, W.T.; Jiang, M.H. [Department of Mechanical Engineering, National Pingtung University of Science and Technology, 1, Shuehfu Road, Neipu, Pingtung 912, Taiwan (China); Chen, W.J., E-mail: chenwjau@yuntech.edu.t [Graduate School of Materials Science, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan (China)

    2010-04-09

    An electroless Ni-P film was first deposited on a spiegel-iron plate and then annealed by an Nd:YAG pulsed wave laser. In order to obtain the optimal laser annealing parameters for maximizing the hardness and minimizing the surface roughness of electroless Ni-P films, the Taguchi method and grey system theory were used to analyze the experimental data. The electroless Ni-P film was also characterized by scanning electron microscopy for the morphology, and transmission electron microscopy for the microstructure and crystal structure. The results showed that the hardness and the surface roughness of electroless Ni-P films can be, at the same time, improved to 50.8% and 68%, respectively, by the laser annealing with the optimal parameters.

  11. Study of Nd:YAG laser annealing of electroless Ni-P film on spiegel-iron plate by Taguchi method and grey system theory

    International Nuclear Information System (INIS)

    Liu, W.L.; Chien, W.T.; Jiang, M.H.; Chen, W.J.

    2010-01-01

    An electroless Ni-P film was first deposited on a spiegel-iron plate and then annealed by an Nd:YAG pulsed wave laser. In order to obtain the optimal laser annealing parameters for maximizing the hardness and minimizing the surface roughness of electroless Ni-P films, the Taguchi method and grey system theory were used to analyze the experimental data. The electroless Ni-P film was also characterized by scanning electron microscopy for the morphology, and transmission electron microscopy for the microstructure and crystal structure. The results showed that the hardness and the surface roughness of electroless Ni-P films can be, at the same time, improved to 50.8% and 68%, respectively, by the laser annealing with the optimal parameters.

  12. Successes and failures of Ni-Cr-Mo family alloys in FGD systems of coal-fired power plants

    International Nuclear Information System (INIS)

    Agarwal, D.C.

    1986-01-01

    At first glance, operation of a typical limestone FGD system seems deceptively simple. However, the first generation scrubbers of the early to mid 70's proved to be a financial and operational disaster due to metals corroding in a rather short time period and non-metallic linings failing by blistering, debonding, cracking, flaking and peeling. Extensive research programs at various institutions and utilities to find better construction materials led to higher alloys up the ladder of the Ni-Cr-Mo family, other materials and new non-metallic coatings. This paper describes case histories showing both success and failures of the various alloys in the Ni-Cr-Mo family. This information will not only be useful to the various scrubber system suppliers and A/E's, but should be of value to utility corrosion/scrubber engineers and maintenance personnel who, on a day-to-day basis, are involved in keeping their systems functional in a cost-effective manner

  13. Fabrication of steel matrix composites locally reinforced with different ratios of TiC/TiB2 particulates using SHS reactions of Ni-Ti-B4C and Ni-Ti-B4C-C systems during casting

    International Nuclear Information System (INIS)

    Yang Yafeng; Wang Huiyuan; Liang Yunhong; Zhao Ruyi; Jiang Qichuan

    2007-01-01

    Steel matrix composites locally reinforced with different molar ratios of in situ TiC/TiB 2 particulates (2:1, 1:1 and 1:2, respectively) have been fabricated successfully utilizing the self-propagating high-temperature synthesis (SHS) reactions of Ni-Ti-B 4 C and Ni-Ti-B 4 C-C systems during casting. Differential thermal analysis (DTA) and X-ray diffraction (XRD) results reveal that the exothermic reactions of the Ni-Ti-B 4 C and Ni-Ti-B 4 C-C systems proceed in such a way that Ni initially reacts with B 4 C and Ti to form Ni 2 B and Ti 2 Ni compounds, respectively, with heat evolution at 1037 deg. C; Subsequently, the external heat and the evolved heat from these exothermic reactions promote the reactions forming TiC and TiB 2 at 1133 deg. C. In the composites reinforced with 1:2 molar ratio of TiC/TiB 2 , almost all TiB 2 grains have clubbed structures, while TiC grains exhibit near-spherical morphologies. Furthermore, TiB 2 grain sizes decrease, with the increase of TiC content. In particular, in the composites reinforced with 2:1 molar ratio of TiC/TiB 2 , it is difficult to find the clubbed TiB 2 grains. Macro-pores and blowholes are absent in the local reinforcing region of the composites reinforced with 1:1 and 1:2 molar ratios of TiC/TiB 2 , while a few macro-pores can be observed in the composite reinforced with 2:1 molar ratio of TiC/TiB 2 . Moreover, the densities of the composites reinforced with 1:1 and 1:2 molar ratios of TiC/TiB 2 are higher than that of the composite reinforced with 2:1 molar ratio of TiC/TiB 2 . The composite reinforced with 1:2 molar ratio of TiC/TiB 2 has the highest hardness and the best wear resistance

  14. Solid-state amorphization in the Ni-Zr system investigated by positron lifetime spectroscopy

    International Nuclear Information System (INIS)

    Bernal, M.J.; De La Cruz, R.M.; Leguey, T.; Pareja, R.; Riveiro, J.M.

    1995-01-01

    The process of mechanical alloying and amorphization of Ni-Zr powders is investigated by positron lifetime spectroscopy, X-ray diffraction and differential scanning calorimetry. The short-lived component of the lifetime spectra is composition and milling-time dependent. The second lifetime component, found during the initial stages of the milling process, appears to be due to annihilation from states trapped at crystalline interface joints. The results indicate that the solid-state reactions induced by ball milling involve the transformation and disappearance of the crystalline interface joints in the powder particles. (orig.)

  15. Effect of C particle size on the mechanism of self-propagation high-temperature synthesis in the Ni-Ti-C system

    International Nuclear Information System (INIS)

    Yang, Y.F.; Wang, H.Y.; Wang, J.G.; Jiang, Q.C.

    2011-01-01

    Highlights: → We investigated the effect of C particle size on the self-propagating high temperature reaction mechanism. → Coarse C particle size (>38 μm) resulted in the formation of prior TiC x layer between Ti and C. → Prior TiC x layer control the whole reaction of Ni-Ti-C and domain the reaction kinetics. → The selection of C particle size is the most important factor to fabricate TiC/Ni composite using Ti, C and Ni mixtures. - Abstract: Effect of C particle size on the mechanism of self-propagation high-temperature synthesis (SHS) in the Ni-Ti-C system was investigated. Fine C particle resulted in a traditional mechanism of dissolution-precipitation while coarse C particle made the reaction be controlled by a mechanism of the diffusion of C through the TiC x layer. The whole process can be described: C atoms diffusing through the TiC x layer dissolved into the Ni-Ti liquid and TiC were formed once the liquid became supersaturated. Simultaneously, the heat generated from the TiC formation made the unstable TiC x layer break up. However, with the spread of Ti-Ni liquid, a new TiC x layer was formed again at the interface between spreading liquid and C particle. This process cannot stop until all the C particles are consumed completely.

  16. New amorphous and nanocrystalline alloys based on the Ni-Si-B system

    Energy Technology Data Exchange (ETDEWEB)

    Battezzati, L.; Rizzi, P.; Romussi, S. [Turin Univ. (Italy). Dipt. di Chimica

    1998-08-01

    The glass formation and crystallization of a Ni{sub 36}Fe{sub 32}Ta{sub 7}Si{sub 8}B{sub 17} alloy is reported. In its equilibrium state it has a complex constitution made of at least four phases. It starts melting at 1227 K and displays a liquidus at 1460 K, but it shows a tendency to undercool even on cooling at 10 K/min in a HTDSC cell. Amorphous ribbons were produced by melt spinning. In DSC experiments the crystallization of the amorphous alloy occurs with a primary reaction giving a peak skewed on the high temperature side with onset at 836 K using an heating rate of 40 K/min. XRD analysis and TEM observations demonstrate that crystals with size below 10 nm and lattice parameter close to that of Ni are formed during this transformation. The mechanism of crystallization is very sensitive to changes in composition. In fact, nanocrystals are not found in alloys easily amorphized as the present one but containing a different ratio of metallic elements. (orig.) 16 refs.

  17. Improvement of antiscuff properties and thermal stability of alloys of the Fe-Cr-Ni-Si system used for building-up of fittings

    International Nuclear Information System (INIS)

    Luzhanskij, I.B.; Runov, A.E.; Gel'man, A.S.; Stepin, V.S.

    1978-01-01

    Studied was the influence of the system and the degree of alloying of alloys of the Fe-Cr-Ni-Si system on their operational characteristics in the operation mode of the energy armature of superhigh parameters. The TsN18 alloy has been developed (containing 0.1 to 0.2% C; 3.5 to 6.0% Si; 0.5 to 3.0% Mn; 16 to 17% Cr; 10.5 to 12% Ni; 1.5 to 3% Mo; the balance being Fe), bombining a high resistance to scuffing with a fairly high heat resistance; the alloy lending itself to building up and to machining. The dependence of the wear resistance of the alloys of the Fe-Cr-Ni-Si system on two factors has been established; namely, - the antifriction characteristics of the film of secondary structures, and physico-mechanical properties of the alloy

  18. Study of the ternary alloy systems Al-Ni-Fe and Al-Cu-Ru with special regard to quasicrystalline phases

    International Nuclear Information System (INIS)

    Lemmerz, U.

    1996-07-01

    Two ternary alloy-systems, the Al-Ni-Fe system and the Al-Cu-Ru system were studied with special regard to quasicrystalline phases. Isothermal sections were established in both systems in the stoichiometric area of the quasicrystalline phase. In the Al-Ni-Fe system a new stable decagonal phase was found. Its stoichiometric range is very small around Al 71.6 Ni 23.0 Fe 5.4 . The temperature range in which it is stable lies between 847 and 930 C. The decagonal phase undergoes a eutectoid reaction to the three crystalline phases Al 3 Ni 2 , Al 3 Ni and Al 13 Fe 4 at 847 C. It melts peritectically at 930 C forming Al 13 Fe 4 , Al 3 Ni 2 and a liquid. The investigations in the Al-Cu-Ru system concentrated on the phase equilibria between the icosahedral phase and its neighbouring phases in a temperature range between 600 and 1000 C. The icosahedral phase was observed in the whole temperature range. The investigated stoichiometric area extends down to Al contents of 45%, which allows the fields of existence to be determined for the ternary phases α-AlCuRu, the icosahedral phase and Al 7 Cu 2 Ru. Binary phases were determined down to the upper (high Al content) border of AlRu. No hitherto unknown phase was observed in the investigated area. Rietveld analyses were carried out on α-AlCuRu and Al 7 Cu 2 Ru showing some discrepancies from the α-AlMnSi structure taken as a base for α-AlCuRu and confirming the Al 7 Cu 2 Fe structure for Al 7 Cu 2 Ru. (orig.)

  19. Fast Data Acquisition system based on NI-myRIO board with GPS time stamping capabilities for atmospheric electricity research

    International Nuclear Information System (INIS)

    Pokhsraryan, D.

    2016-01-01

    In the investigation of the fast physical processes, such as propagation of a lightning leader and detection of the correspondent radio emission waveforms, it is crucial to synchronize the corresponding signals in order to be able to create a model of the lightning initiation. Therefore, the DAQ system should be equipped with a GPS synchronization capability. In the presented report, we describe the DAQ system based on a NI-myRio board that provides detection of particle fluxes, the near-surface electric field disturbances and waveforms of radio signals from atmospheric discharges, all synchronized with an accuracy of tens of nanoseconds. The results of the first measurements made at Aragats high-altitude station of Yerevan Physics Institute in Summer-Autumn 2015 are presented and discussed. (author)

  20. On the muscle activity control in the hierarchy motor systems. Hierarchy undo system ni okeru kin no kassei seigyo ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Akiba, M.; Miyamoto, Y. (Osaka Industrial University, Osaka (Japan). Faculty of Engineering)

    1991-10-31

    Excitory impulses for motor systems are controlled by the psychophysiological nervous systems in the body either autonomically or voluntarily. Involved in the voluntary control loop are motor cortex, basal gangalia, thalamus, cerebellum, etc. The purpose of this study is to confirm whether it is possible to reduce or emphasize the muscle contraction voluntarily through electromyogram (EMG) feedback training. EMG can indicate the excitory impulses of motor units. In the experiments, electrodes were placed on the skin above muscles. A significant reduction effect was observed for subjects trained in relaxation of the forehead musculature through EMG feedback. Results of the experiments suggested that biofeedback training for relaxation of the forehead tensional muscle might be effective in eliminating muscle contraction, and that feedback training for activation of damaged muscles might be effective in emphasizing muscle contraction. 4 refs., 9 figs.

  1. Starting and stopping control on power conditioner in photovoltaic power system; Taiyoko hatsuden system ni okeru power conditioner no kido teishi seigyo ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Hirose, M.; Ishihara, Y.; Todaka, T.; Harada, K. [Doshisha University, Kyoto (Japan); Oshiro, H.; Nakamura, H. [Japan Quality Assurance Organization, Tokyo (Japan)

    1997-11-25

    Studies are made about the control of the power conditioner over the maximum power point tracking (MPPT) function in a photovoltaic power generation system. The analysis is conducted by means of computer simulation into the effect of a start/stop function added to the control of MPPT and the effect on the generation of power of the setting of parameters in the start/stop function. The reduction in output power due to difference between the actual operation point and the optimum operation point is evaluated by use of a load matching correction factor. In this simulation, it is assumed that the solar cell array consists of 13 rows in 5 parallel columns, is capable of a normal output of 3.149kW, has a panel tilted at 30 degrees, and faces due south. The power conditioner is assumed to be a system rated at 3kVA, equipped with system interconnection and back flow features. As a result, it is learned that the stop voltage should be set at 180V or lower and the steady voltage near 185.5V for a good result and that there is not much need after all for the start/stop technique. 2 refs., 8 figs., 2 tabs.

  2. Magnetic order and spin dynamics in the heavy Fermion system YbNi{sub 4}P{sub 2}

    Energy Technology Data Exchange (ETDEWEB)

    Spehling, Johannes; Guenther, Marco; Yeche, Nicholas; Klauss, Hans-Henning [Institut fuer Festkoerperphysik, TU Dresden (Germany); Luetkens, Hubertus; Baines, Chris [Laboratory for Muonm Spin Spectroscopy, Paul Scherrer Institut, Villigen (Switzerland); Krellner, Cornelius; Geibel, Christoph; Steglich, Frank [Max-Planck-Institut fuer Chemische Physik Fester Stoffe, Dresden (Germany)

    2012-07-01

    A longstanding question in the field of quantum criticality relates to the possible existence of a ferromagnetic (FM) quantum critical point (QCP). At a QCP, collective quantum fluctuations tune the system continuously from a magnetically ordered to a non-magnetic ground state. However, so far no 4f-material with a FM QCP is found. Recently, in the HF metal YbNi{sub 4}P{sub 2} with a quasi 1D-electronic structure, FM quantum criticality above a low FM transition temperature of T{sub C}=170 mK was suggested. Our zero field muon spin relaxation on YbNi{sub 4}P{sub 2} proves static magnetic order with a strongly reduced ordered Yb{sup 3+} moment below T{sub C}. Above T{sub C}, the muon asymmetry function P(t,B) is dominated by quasi homogeneous spin fluctuations and exhibits a time-field scaling relation P(t,B)=P(t/B{sup {gamma}}) indicating cooperative critical spin dynamics. At T=190 mK, slightly above T{sub C}, {gamma}=0.81(5) K suggesting time-scale invariant power-law behavior for the dynamic electronic spin-spin autocorrelation function. The results are discussed in comparison with the AFM compound YbRh{sub 2}Si{sub 2}.

  3. Study of fatigue and fracture behavior of NbCr{sub 2}-based alloys: Phase stability in Nb-Cr-Ni ternary system

    Energy Technology Data Exchange (ETDEWEB)

    Zhu, J.H.; Liaw, P.K. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Liu, C.T. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

    1997-12-01

    Phase stability in a ternary Nb-Cr-Ni Laves phase system was studied in this paper. Their previous study in NbCr{sub 2}-based transition-metal Laves phases has shown that the average electron concentration factor, e/a, is the dominating factor in controlling the phase stability of NbCr{sub 2}-based Laves phases when the atomic size ratios are kept identical. Since Ni has ten out-shell electrons, the substitution of Ni for Cr in NbCr{sub 2} will increase the average electron concentration of the alloy, thus leading to the change of the crystal structures from C15 to C14. In this paper, a number of pseudo-binary Nb(Cr,Ni){sub 2} alloys were prepared, and the crystal structures of the alloys after a long heat-treatment at 1000 C as a function of the Ni content were determined by the X-ray diffraction technique. The boundaries of the C15/C14 transition were determined and compared to their previous predictions. It was found that the electron concentration and phase stability correlation is obeyed in the Nb-Cr-Ni system. However, the e/a ratio corresponding to the C15/C14 phase transition was found to move to a higher value than the predicted one. The changes in the lattice constant, Vickers hardness and fracture toughness were also determined as a function of the Ni content, which were discussed in light of the phase stability difference of the alloys.

  4. Quality of Metal Deposited Flux Cored Wire With the System Fe-C-Si-Mn-Cr-Mo-Ni-V-Co

    Science.gov (United States)

    Gusev, Aleksander I.; Kozyrev, Nikolay A.; Osetkovskiy, Ivan V.; Kryukov, Roman E.; Kozyreva, Olga A.

    2017-10-01

    Studied the effect of the introduction of vanadium and cobalt into the charge powder fused wire system Fe-C-Si-Mn-Cr-Ni-Mo-V, used in cladding assemblies and equipment parts and mechanisms operating under abrasive and abrasive shock loads. the cored wires samples were manufactured in the laboratory conditions and using appropriate powder materials and as a carbonfluoride contained material were used the dust from gas purification of aluminum production, with the following components composition, %: Al2O3 = 21-46.23; F = 18-27; Na2O = 8-15; K2O = 0.4-6; CaO = 0.7-2.3; Si2O = 0.5-2.48; Fe2O3 = 2.1-3.27; C = 12.5-30.2; MnO = 0.07-0.9; MgO = 0.06-0.9; S = 0.09-0.19; P = 0.1-0.18. Surfacing was produced on the St3 metal plates in 6 layers under the AN-26C flux by welding truck ASAW-1250. Cutting and preparation of samples for research had been implemented. The chemical composition and the hydrogen content of the weld metal were determined by modern methods. The hardness and abrasion rate of weld metal had been measured. Conducted metallographic studies of weld metal: estimated microstructure, grain size, contamination of oxide non-metallic inclusions. Metallographic studies showed that the microstructure of the surfaced layer by cored wire system Fe-C-Si-Mn-Cr-Mo-Ni-V-Co is uniform, thin dendrite branches are observed. The microstructure consists of martensite, which is formed inside the borders of the former austenite grain retained austenite present in small amounts in the form of separate islands, and thin layers of δ-ferrite, which is located on the borders of the former austenite grains. Carried out an assessment the effect of the chemical composition of the deposited metal on the hardness and wear and hydrogen content. In consequence of multivariate correlation analysis, it was determined dependence to the hardness of the deposited layer and the wear resistance of the mass fraction of the elements included in the flux-cored wires of the system Fe-C-Si-Mn-Cr-Mo-Ni

  5. Phase equilibria and stability of the B2 phase in the Ni-Mn-Al and Co-Mn-Al systems

    International Nuclear Information System (INIS)

    Kainuma, R.; Ise, M.; Ishikawa, K.; Ohnuma, I.; Ishida, K.

    1998-01-01

    The phase equilibria and ordering reactions in the composition region up to 50 at.% Al have been investigated in the Ni-Mn-Al and Co-Mn-Al systems at temperatures in the interval 850-1200 C mainly by the diffusion couple method. The compositions of the γ (A1: fcc-Ni, -Co, γ-Mn), γ' (L1 2 : Ni 3 Al), β (B2: NiAl, CoAl, NiMn), β-Mn (A13: β-Mn type), δ-Mn (A2: bcc-Mn) and ε (A3: hcp-(Mn, Al)) phases in equilibrium and the critical boundaries of the A2/B2 continuous ordering transition in the bcc phase region have been determined. It is shown that in the Mn-rich portion of the ternary systems both continuous and discontinuous A2 to B2 ordering transitions exist. The A2+B2 two-phase region in the isothermal sections has a lenticular shape and exists over a wide temperature range. The phase equilibria between the γ, γ', β, β-Mn, δ-Mn and ε phases are presented and the stability of the ordered bcc aluminides is discussed. (orig.)

  6. Microprobe measurements to determine phase boundaries and diffusion paths in ternary phase diagrams taking a Cu-Ni-Al system as an example

    International Nuclear Information System (INIS)

    Rudolph, G.

    1983-01-01

    With the aid of quantitative microprobe tests, diffusion phenomena and phase formation in the ternary CuNiAl system at 600 - 900 0 C were investigated taking as an example the diffusion couple CuNi5Al5-nickel. The diffusion paths in the ternary system are dependent on temperature and assume an S-form in the copper corner of the phase diagram. In the copper corner, the curves swing away from the more rapid component aluminium towards the copper. Due to this non-linear course of the curves, the intermetallic theta-phase of the type (Ni,Cu) 3 Al can be observed as a layer at all temperatures in the boundary zone. At 800 0 C and to a lesser extend at 900 0 C the solubility of α-CuNi40 for aluminium, at around 5 mass-%, is higher than the value given by W.O. Alexander (1938). As far as it is possible with the diffusion couple under analysis, the microprobe measurements taken otherwise conform at 700 and 600 0 C the position of the phase boundary α-(Cu,Ni)/(α+theta)-miscibility gap indicated in W.O. Alexander (1938). (Author)

  7. Magnetic properties of the Kagome staircase mixed system (CoxNi1-x)3V2O8

    International Nuclear Information System (INIS)

    Qureshi, Navid

    2008-01-01

    The orthooxovanadates of the 3d transition metals M 3 V 2 O 8 , known as Kagome staircase systems, reveal interesting magnetic properties due to their crystal structure. Although these compounds are isostructural for M=Co,Ni,Mn,Cu, they differ considerably with respect to their magnetic phase transitions and magnetic structures. As the magnetic ions are situated on corners of cornersharing triangles, geometric frustration plays an important role in this system. This is not only confined to the fact, that the antiferromagnetic structures exhibit reduced magnetic moments, but apparently also to the ferromagnetic structure of Co 3 V 2 O 8 , which exhibits a strongly reduced Co moment of 1.54 Bohr magnetons. Within this work precisely this ferromagnetic structure has been investigated in detail and it could be shown that the relatively weak magnetic moment does not result from frustration, but is a consequence of the strong hybridization effects between the cobalt and oxygen orbitals. The pronounced covalent character of this Co ion leads to the fact that due to the charge transfer the oxygen ions significantly contribute to the bulk magnetization when applying an external magnetic field. The second part of the presented work deals with the systematic investigation of the mixed system (Co x Ni 1-x )3V 2 O 8 . A detailed magnetic phase diagram could be drawn, in which the temperature and composition dependent magnetic phase transitions have been pinpointed. Furthermore, an interesting magnetic structure of a chosen composition of x=0.5 has been observed, which differs considerably from those of the end members. (orig.)

  8. Measurements of fusion cross sections in the systems {sup 58,64}Ni +, {sup 78,86}Kr

    Energy Technology Data Exchange (ETDEWEB)

    Rehm, K.E.; Jiang, C.L.; Esbensen, H. [and others

    1995-08-01

    We investigated the nuclear structure dependence of the sub-barrier fusion enhancement in heavy-ion induced reactions by studying the systems {sup 58,64}Ni + {sup 78,86}Kr at energies in the vicinity of the Coulomb barrier. These {sup 78,86}Kr selected because, similar to the Mo case discussed isotopes were above, there are strong changes in nuclear structure as a function of the neutron number. However, contrary to Mo, where the {open_quotes}softness{close_quotes} of the nucleus increases with higher neutron number, the most collective nucleus for the Kr case is the neutron-deficient {sup 78}Kr. The experiment was performed with Kr beams from the positive-ion injector using enriched {sup 78,86}Kr gas in the ECR ion source. The separation of evaporation residues from the elastically-scattered particles was achieved by using their difference in time-of-flight and magnetic rigidity in the gas-filled spectrograph. The excitation functions for the four systems were compared to coupled-channels calculations including inelastic excitations of one- and two-phonon states in projectile and target. For systems involving {sup 86}Kr, good agreement between theory and experiment is obtained, while for {sup 78}Kr + {sup 58,64}Ni an additional enhancement of the cross sections persisted at the lowest energies. It was found that this fusion enhancement correlates with the nuclear structure of the individual nucleus. Characterizing the structure of vibrational even-even nuclei by their restoring force parameter C{sub 2}, which can be calculated from the energy of the lowest 2{sup +} state and the associated B(E2) value, one observes that nuclei with small C{sub 2} values exhibit a large sub-barrier fusion enhancement, while nuclei with high values of C{sub 2} (usually closed-shell nuclei), show smaller fusion yields.

  9. Research on adoption of graphic processing system into electric power facilities operation management. Denryoku setsubi kanri gyomu ni okeru zukei shori system no tekiyo ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Jitsubuchi, Yoshiyasu; Uryu, Kenji; Terasaki, Naoaki (Kyushu Electric Power Co., Inc., Fukuoka (Japan))

    1989-03-30

    In the technical department of electric power companies, there are innumerable single line diagram, machinery arrangement plan and other facilities drawings. Based on those drawings, facilities planning, work design, construction plan, maintenance and management data, etc. are made, for which making heightening is desired in efficiency of drawing filing management. Therefore, research was made on the adoption of CAD technology through modeling power transmission line, and power generating and transforming station operation management. First for the application of power transmission facilities, the power transmission line plan and facilities information were planned to be unified in management. Ie., the power transmission line plan and profile being shown on the display, symbols of steel towers, cable lines, etc. were further picked by mouth to easily substantiate the facilities. While image input and CAD of drawing were made in combined treatment. Then for the application to the power generating and transforming facilities, the single line diagram and facilities information were unified in management, together with demonstration of data interchangeability among different kinds of CAD system. 13 figs., 9 tabs.

  10. [Effect of heat treatment on the structure of a Cu-Zn-Al-Ni system dental alloy].

    Science.gov (United States)

    Guastaldi, A C; Adorno, A T; Beatrice, C R; Mondelli, J; Ishikiriama, A; Lacefield, W

    1990-01-01

    This article characterizes the structural phases present in the copper-based metallic alloy system "Cu-Zn-Al-Ni" developed for dental use, and relates those phases to other properties. The characterization was obtained after casting (using the lost wax process), and after heat treatment. In order to obtain better corrosion resistance by changing the microstructure, the castings were submitted to 30, 45 and 60 minutes of heat treatment at the following temperatures: 750 degrees C, 800 degrees C, and 850 degrees C. The various phases were analyzed using X-ray diffraction and scanning electron microscopy (SEM). The results after heat treatment showed a phase (probably Cu3Al), that could be responsible for the improvement in the alloy's resistance to corrosion as compared to the as-cast structure.

  11. Simple nonempirical calculations of the zero-field splitting in transition metal systems: I. The Ni(II)-water complexes

    International Nuclear Information System (INIS)

    Ribbing, C.; Odelius, M.; Laaksonen, A.; Kowalewski, J.; Roos, B.

    1990-01-01

    A simple nonempirical scheme is presented for calculating the splittings of ground state multiplets (the zero-field splitting) is transition metal complexes. The method employs single reference, single excitation CI calculations based on open-shell RHF. The spin-orbit coupling is described using an effective one-electron, one-center operators. The method is applied to the triplet state Ni(II) complexes with one to six water molecules. the validity of the second-order perturbation theory approach and of the spin-Hamiltonian formalism is found to be limited to slightly distorted octahedral systems. Generally, small changes in the geometries of the complexes are found to cause substantial variations of the splitting pattern

  12. Tuning metal–graphene interaction by non-metal intercalation: a case study of the graphene/oxygen/Ni (1 1 1) system

    International Nuclear Information System (INIS)

    Zhang, Wei-Bing; Chen, Chuan

    2015-01-01

    Epitaxial growth of graphene on transition metal surfaces has been proposed as one of the most promising methods for large-scale preparation of high-quality graphene. However, the presence of the substrate could significantly affect the intrinsic electronic structure of graphene and intercalation of metals is an established route for decoupling the graphene from the substrate. Taking a graphene/Ni(1 1 1) surface as an example, we suggest reactive oxygen as an effective intercalation element to recover the linear dispersion of graphene based on density functional theory calculation, in which vdW interactions are treated using the optB88-vdW functional. The possible intercalation configurations at different coverage are considered and the geometry and electronic structure are analyzed in detail. Our results indicate that the energy favorable structures change from top-fcc to bridge-top configuration after oxygen intercalation and the binding between the graphene and the O/Ni(1 1 1) substrate becomes stronger at high oxygen coverage even than pure Ni(1 1 1) substrate. Most interestingly, the electronic structure of pristine graphene is found to be almost restored, especially for the bridge-top configuration after oxygen intercalation, and the Dirac points move towards the high energy region relative to the Fermi level. A graphene/oxygen/Ni (1 1 1) system is thus suggested as a p-type doped strongly bound Dirac system. Detailed analysis using projected energy band and differential charge density indicates that the intercalated oxygen atoms react with the Ni (1 1 1) surface strongly, which not only blocks the strong interaction between Ni and graphene but also passivates oxygen 2p states. The intercalation mechanisms distinguished from the conventional metal intercalation will be useful to understand other complex intercalation systems. (paper)

  13. Reduction mechanism of Ni2+ into Ni nanoparticles prepared from ...

    Indian Academy of Sciences (India)

    journal of. March 2009 physics pp. 577–586. Reduction mechanism of Ni2+ into Ni ..... and at high field, no domain wall is available and hence, the system becomes a .... [23] J Ding, T Tsuzuki, P G McCormick and R Street, J. Phys. D: Appl.

  14. Ni-based electrocatalyst for water oxidation developed In-situ in a HCO3 -/CO2 system at near-neutral pH

    KAUST Repository

    Joya, Khurram Saleem

    2014-03-10

    Electrochemically generated NiOx nanoworms from a neutral bicarbonate system split water into dioxygen and protons with tremendous efficiency and stability. The NiOx electrocatalyst follows a pH-potential dependence, revealing a PCET (proton coupled electron transfer) mechanism of one electron and one proton oxidation. It does not require proton abstracting phosphate or borate buffers for electrogeneration and catalysis, and shows promising activity for anodic oxidation of water in phosphate, borate, and carbonate buffers. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. Ni-based electrocatalyst for water oxidation developed In-situ in a HCO3 -/CO2 system at near-neutral pH

    KAUST Repository

    Joya, Khurram Saleem; Joya, Yasir F.; De Groot, Huub J M

    2014-01-01

    Electrochemically generated NiOx nanoworms from a neutral bicarbonate system split water into dioxygen and protons with tremendous efficiency and stability. The NiOx electrocatalyst follows a pH-potential dependence, revealing a PCET (proton coupled electron transfer) mechanism of one electron and one proton oxidation. It does not require proton abstracting phosphate or borate buffers for electrogeneration and catalysis, and shows promising activity for anodic oxidation of water in phosphate, borate, and carbonate buffers. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  16. Thermodynamic stability of oxides in the Ni-Cr-Fe system and stress corrosion crack growth kinetics of alloy 600 in primary water

    International Nuclear Information System (INIS)

    Caron, D.; Cassagne, T.; Daret, J.; Santarini, G.; Mazille, H.

    1999-01-01

    In the framework of the study of stress corrosion of alloy-600, a thermodynamical study of stoichiometric simple and mixed oxides of Ni-Cr-Fe system has been performed. This theoretical work shows that the oxidation of alloy-600 is dependent on temperature and on the quantity of dissolved hydrogen

  17. Artificial neural networks as a multivariate calibration tool: modelling the Fe-Cr-Ni system in X-ray fluorescence spectroscopy

    NARCIS (Netherlands)

    Bos, A.; Bos, A.; Bos, M.; van der Linden, W.E.

    1993-01-01

    The performance of artificial neural networks (ANNs) for modeling the Cr---Ni---Fe system in quantitative x-ray fluorescence spectroscopy was compared with the classical Rasberry-Heinrich model and a previously published method applying the linear learning machine in combination with singular value

  18. Exchange bias in sputtered FeNi/FeMn systems: Effect of short low-temperature heat treatments

    Energy Technology Data Exchange (ETDEWEB)

    Savin, Peter, E-mail: peter.savin@urfu.ru [Department of Magnetism and Magnetic Nanomaterials, Laboratory of Magnetic Sensors, Ural Federal University, 620002 Ekaterinburg (Russian Federation); Guzmán, Jorge [Instituto de Ciencia de Materiales de Madrid-CSIC, 28049 Madrid (Spain); Lepalovskij, Vladimir [Department of Magnetism and Magnetic Nanomaterials, Laboratory of Magnetic Sensors, Ural Federal University, 620002 Ekaterinburg (Russian Federation); Svalov, Andrey; Kurlyandskaya, Galina [Department of Magnetism and Magnetic Nanomaterials, Laboratory of Magnetic Sensors, Ural Federal University, 620002 Ekaterinburg (Russian Federation); Departamento de Electricidad y Electrónica, Universidad del País Vasco (UPV/EHU), 48940 Leioa, Vizcaya (Spain); Asenjo, Agustina [Instituto de Ciencia de Materiales de Madrid-CSIC, 28049 Madrid (Spain); Vas’kovskiy, Vladimir [Department of Magnetism and Magnetic Nanomaterials, Laboratory of Magnetic Sensors, Ural Federal University, 620002 Ekaterinburg (Russian Federation); Vazquez, Manuel [Department of Magnetism and Magnetic Nanomaterials, Laboratory of Magnetic Sensors, Ural Federal University, 620002 Ekaterinburg (Russian Federation); Instituto de Ciencia de Materiales de Madrid-CSIC, 28049 Madrid (Spain)

    2016-03-15

    Short (5 min) post-deposition thermal treatments under magnetic field at low temperature (up to 200 °C) performed in exchange-coupled FeNi(40 nm)/FeMn(20 nm) bilayer thin films prepared by magnetron sputtering are shown to be effective to significantly modify their exchange field (from around 40 Oe down to 27 Oe) between FeNi and FeMn layers. A similar exchange field decrease was observed for the first deposited FeNi layer of the FeNi(40 nm)/FeMn(20 nm)/FeNi(40 nm) trilayer films after the same thermal treatments. The exchange field value for the second FeNi layer was not substantially changed. The X-ray diffraction patterns indicates that such a heat treatment has no effect on the grain size and crystalline texture of the films, while atomic force microscope studies reveal an increase of the surface roughness after the treatment which is more noticeable in the case of the trilayer film. Analysis of the experimental results leads us to conclude that the variations of the exchange field after heat treatment are likely caused by a modification of interfacial roughness and/or interfacial magnetic structure, but unlikely by the changes in the microstructure and/or changes of composition of the antiferromagnetic FeMn layer. - Highlights: • FeNi/FeMn bilayers and FeNi/FeMn/FeNi trilayers were prepared by magnetron sputtering. • Post-deposition heat treatments at the temperatures below 200 °C during 5 min were made. • Annealing reduces the exchange field for the first FeNi layer in trilayers. • The exchange field value for the second FeNi layer was not substantially changed. • Exchange field changes are most likely caused by a modification of interface roughness.

  19. Apically extruded debris in filling removal of curved canals using 3 NiTi systems and hand files.

    Science.gov (United States)

    Delai, Débora; Boijink, Daiana; Hoppe, Carolina Bender; Grecca, Abiana Soares; Kopper, Patrícia Maria Poli

    2018-01-01

    The aim of this study was to assess the amount of apically extruded debris during filling removal with WaveOne Gold (WOG), ProTaper Universal Retreatment (PTR), D-RaCe Retreatment (DRR) or hand files (HF), to compare the working time during filling removal, and to describe failures of NiTi instruments. Forty mesiobuccal roots of maxillary first molars were prepared with WOG Primary, obturated and divided into 4 groups (n=10), according to the instruments used: WOG, PTR, DRR or HF. Distilled water was used as irrigant and the extruded debris were collected in Eppendorf tubes and dried. The amount of extruded debris was determined by subtracting the final from the initial weight. The time of filling removal for each canal was recorded and the instruments used were analyzed pre and post-operatively by SEM. Kruskal-Wallis and Dunn's test analyzed extruded debris data and ANOVA, followed by Tukey's test, compared the working time data (a=0.05). Instrument deformation and fracture were described. WOG produced significantly less debris compared with HF and DRR (p0.05). HF, PTR and DRR showed no significant difference (p>0.05). Working time in HF group was significantly higher than others (p<0.05). SEM analyses showed, from the 18 instruments evaluated, 3 fractures and 10 deformations. All instruments tested caused debris extrusion. WOG was associated with less extrusion than DRR and HF. Filling removal with HF was slower than with the other instruments. All NiTi systems presented fracture and deformation.

  20. Influence of NiTi alloy on the root canal shaping capabilities of the ProTaper Universal and ProTaper Gold rotary instrument systems

    Directory of Open Access Journals (Sweden)

    Jussaro Alves DUQUE

    Full Text Available Abstract Objective This study aimed to evaluate the influence of the NiTi wire in Conventional NiTi (ProTaper Universal PTU and Controlled Memory NiTi (ProTaper Gold PTG instrument systems on the quality of root canal preparation. Material and Methods Twelve mandibular molars with separate mesial canals were scanned using a high-definition microcomputed tomography system. The PTU and PTG instruments were used to shape twelve mesial canals each. The canals were scanned after preparation with F2 and F3 instruments of the PTU and PTG systems. The analyzed parameters included the remaining dentin thickness at the apical and cervical levels, root canal volume and untouched canal walls. Data was analyzed for statistical significance by the Friedman and Dunn’s tests. For the comparison of data between groups, the Mann-Whitney test was used. Results In the pre-operative analysis, there were no statistically significant differences between the groups in terms of the area and volume of root canals (P>.05. There was also no statistically significant difference between the systems with respect to root canal volume after use of the F2 and F3 instruments. There was no statistical difference in the dentin thickness at the first apical level between, before and after instrumentation for both systems. At the 3 cervical levels, the PTG maintained centralization of the preparation on the transition between the F2 and F3 instruments, which did not occur with the PTU. Conclusion The Conventional NiTi (PTU and Controlled Memory NiTi (PTG instruments displayed comparable capabilities for shaping the straight mesial root canals of mandibular molars, although the PTG was better than the PTU at maintaining the centralization of the shape in the cervical portion.

  1. Influence of NiTi alloy on the root canal shaping capabilities of the ProTaper Universal and ProTaper Gold rotary instrument systems

    Science.gov (United States)

    DUQUE, Jussaro Alves; VIVAN, Rodrigo Ricci; CAVENAGO, Bruno Cavalini; AMOROSO-SILVA, Pablo Andrés; BERNARDES, Ricardo Affonso; de VASCONCELOS, Bruno Carvalho; DUARTE, Marco Antonio Hungaro

    2017-01-01

    Abstract Objective This study aimed to evaluate the influence of the NiTi wire in Conventional NiTi (ProTaper Universal PTU) and Controlled Memory NiTi (ProTaper Gold PTG) instrument systems on the quality of root canal preparation. Material and Methods Twelve mandibular molars with separate mesial canals were scanned using a high-definition microcomputed tomography system. The PTU and PTG instruments were used to shape twelve mesial canals each. The canals were scanned after preparation with F2 and F3 instruments of the PTU and PTG systems. The analyzed parameters included the remaining dentin thickness at the apical and cervical levels, root canal volume and untouched canal walls. Data was analyzed for statistical significance by the Friedman and Dunn’s tests. For the comparison of data between groups, the Mann-Whitney test was used. Results In the pre-operative analysis, there were no statistically significant differences between the groups in terms of the area and volume of root canals (P>.05). There was also no statistically significant difference between the systems with respect to root canal volume after use of the F2 and F3 instruments. There was no statistical difference in the dentin thickness at the first apical level between, before and after instrumentation for both systems. At the 3 cervical levels, the PTG maintained centralization of the preparation on the transition between the F2 and F3 instruments, which did not occur with the PTU. Conclusion The Conventional NiTi (PTU) and Controlled Memory NiTi (PTG) instruments displayed comparable capabilities for shaping the straight mesial root canals of mandibular molars, although the PTG was better than the PTU at maintaining the centralization of the shape in the cervical portion. PMID:28198973

  2. High temperature oxidation behavior of hafnium modified NiAl bond coat in EB-PVD thermal barrier coating system

    Energy Technology Data Exchange (ETDEWEB)

    Guo Hongbo; Sun Lidong; Li Hefei [Department of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, No.37 Xueyuan Road, Beijing 100083 (China); Gong Shengkai [Department of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, No.37 Xueyuan Road, Beijing 100083 (China)], E-mail: gongsk@buaa.edu.cn

    2008-06-30

    NiAl coatings doped with 0.5 at.% and 1.5 at.% Hf were produced by co-evaporation of NiAl and Hf ingots by electron beam physical vapor deposition (EB-PVD), respectively. The addition of 0.5 at.% Hf significantly improved the cyclic oxidation resistance of the NiAl coating. The TGO layer in the 1.5 at.% Hf doped NiAl coating is straight; while that in the 0.5 at.% Hf doped coating became undulated after thermal cycling. The doped NiAl thermal barrier coatings (TBCs) revealed improved thermal cycling lifetimes at 1423 K, compared to the undoped TBC. Failure of the 0.5 at.% Hf doped TBC occurred by cracking at the interface between YSZ topcoat and bond coat, while the 1.5 at.% Hf doped TBC cracked at the interface between bond coat and substrate.

  3. Copper-based alloys, crystallographic and crystallochemical parameters of alloys in binary systems Cu-Me (Me=Co, Rh, Ir, Cu, Ag, Au, Ni, Pd, Pt)

    Energy Technology Data Exchange (ETDEWEB)

    Porobova, Svetlana, E-mail: porobova.sveta@yandex.ru; Loskutov, Oleg, E-mail: lom58@mail.ru [Tomsk State University of Architecture and Building, Russia, Tomsk, 2 Solyanaya sq, Tomsk, 634003 (Russian Federation); Markova, Tat’jana, E-mail: patriot-rf@mail.ru [Siberian State Industrial University. 42 Kirov St., Novokuznetsk, 654007 (Russian Federation); Klopotov, Vladimir, E-mail: vdklopotov@mail.ru [Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050 (Russian Federation); Klopotov, Anatoliy, E-mail: klopotovaa@tsuab.ru [Tomsk State University of Architecture and Building, Russia, Tomsk, 2 Solyanaya sq, Tomsk, 634003 (Russian Federation); National Research Tomsk State University, 36, Lenin Ave., Tomsk, 634050 (Russian Federation); Vlasov, Viktor, E-mail: vik@tsuab.ru [Tomsk State University of Architecture and Building, Russia, Tomsk, 2 Solyanaya sq, Tomsk, 634003 (Russian Federation); Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050 (Russian Federation)

    2016-01-15

    The article presents the results of the analysis of phase equilibrium of ordered phases in binary systems based on copper Cu- Me (where Me - Co, Rh, Ir, Ag, Au, Ni, Pd, Pt) to find correlations of crystallochemical and crystallographic factors. It is established that the packing index in disordered solid solutions in binary systems based on copper is close to the value of 0.74 against the background of an insignificant deviation of atomic volumes from the Zen’s law.

  4. The Asian-Australian Monsoon and El Niño-Southern Oscillation in the NCAR Climate System Model*.

    Science.gov (United States)

    Meehl, Gerald A.; Arblaster, Julie M.

    1998-06-01

    Features associated with the Asian-Australian monsoon system and El Niño-Southern Oscillation (ENSO) are described in the National Center for Atmospheric Research (NCAR) global coupled Climate System Model (CSM). Simulation characteristics are compared with a version of the atmospheric component of the CSM, the NCAR CCM3, run with time-evolving SSTs from 1950 to 1994, and with observations. The CSM is shown to represent most major features of the monsoon system in terms of mean climatology, interannual variability, and connections to the tropical Pacific. This includes a representation of the Southern Oscillation links between strong Asian-Australian monsoons and associated negative SST anomalies in the eastern equatorial Pacific. The equatorial SST gradient across the Pacific in the CSM is shown to be similar to the observed with somewhat cooler mean SSTs across the entire Pacific by about 1°-2°C. The seasonal cycle of SSTs in the eastern equatorial Pacific has the characteristic signature seen in the observations of relatively warmer SSTs propagating westward in the first half of the year followed by the reestablishment of the cold tongue with relatively colder SSTs propagating westward in the second half of the year. Like other global coupled models, the propagation is similar to the observed but with the establishment of the relatively warmer water in the first half of the year occurring about 1-2 months later than observed. The seasonal cycle of precipitation in the tropical eastern Pacific is also similar to other global coupled models in that there is a tendency for a stronger-than-observed double ITCZ year round, particularly in northern spring, but with a well-reproduced annual maximum of ITCZ strength north of the equator in the second half of the year. Time series of area-averaged SSTs for the NINO3 region in the eastern equatorial Pacific show that the CSM is producing about 60% of the amplitude of the observed variability in that region, consistent

  5. The Role of Fe,Ni Metal and Fe,Ni Sulfide Nanoparticles in Catalytic Organic Synthesis in the Early Solar System: Evidence From Carbonaceous Chondrites.

    Science.gov (United States)

    Brearley, A. J.

    2008-12-01

    Numerous studies have shown that carbonaceous chondrites contain a wide variety of both soluble and insoluble organic compounds. These compounds formed in a variety of different astrophysical environments including the interstellar medium, the solar nebula and on asteroidal parent bodies. The solid or insoluble organic material (IOM) in carbonaceous chondrites is likely the complex end product of synthesis and processing in all of these environments. Although the bulk chemistry and structure of IOM in carbonaceous chondrites is well understood, important questions remain as to the exact spatial occurrence and distribution of organic material within carbonaceous chondrites. Such information may provide important insights into the possible mechanisms of formation of organic material at the grain scale. We have examined the matrices of three CM carbonaceous chondrites, Y791198, Murchison and ALH81002 using a range of different TEM techniques. Mineralogically, the matrices of these meteorites consist of phyllosilicates and/or amorphous materials associated with sulfides, oxides and carbides. Using energy filtered TEM several distinct occurrences of organic material have been identified, notably associations with nanoparticles of sulfide and carbide. Sulfides have grain sizes that are commonly <100 nm with thin layers of poorly graphitized C (<1 nm) on their surfaces. This carbonaceous layer often contains nitrogen suggesting that it is organic in character. In addition, nanoparticles of Fe,Ni carbides that occur either singly or in clusters are often embedded in carbonaceous material that is also N-bearing. These carbides have experienced partial oxidation to magnetite around their rims. The ubiquitous spatial association between sulfide and carbide nanoparticles and carbonaceous material indicates a genetic relation between these phases. This association can be most readily explained by Fischer-Tropsch-type (FTT) catalysis reactions involving catalytic hydrogenation

  6. Study on the optimal control of the ground thermal storage system in the greenhouse. Part 4; Onshitsu ni okeru taiyo energy dochu chikunetsu system ni okeru saiteki seigyo ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Zheng, M [Sanko Air Conditioning Co. Ltd., Osaka (Japan); Nakahara, N [Kanagawa University, Yokohama (Japan)

    1996-10-27

    Three types of weight in both energy saving and optimum room temperature environment were changed to obtain the optimal control solution of the ground thermal storage system in a greenhouse. The relation diagram between the optimal solution of a performance function, and the state constraints and control function constraints was created in consideration of the energy term in a control function value area and the room temperature environment. As a result, the whole image of the performance function could be grasped in consideration of the energy term with inequality constraints and the room temperature environmental term in this study. The rate of a weighting factor in the performance function significantly influences the optimal solution. The influence on the optimal solution also changes when the optimal room temperature schedule differs. The influence that three types of rising algorithm exert on the convergence and converging speed was investigated. Superiority or inferiority occurs according to the space properties of a performance function. A zigzag method is most disadvantageous. The constraints can be converged to the optimal solution using an SUMT outer point method irrespective of the initial value. 6 refs., 6 figs., 4 tabs.

  7. Mechanical intermixing of components in (CoMoNi)-based systems and the formation of (CoMoNi)/WC nanocomposite layers on Ti sheets under ball collisions

    Science.gov (United States)

    Romankov, S.; Park, Y. C.; Shchetinin, I. V.

    2017-11-01

    Cobalt (Co), molybdenum (Mo), and nickel (Ni) components were simultaneously introduced onto titanium (Ti) surfaces from a composed target using ball collisions. Tungsten carbide (WC) balls were selected for processing as the source of a cemented carbide reinforcement phase. During processing, ball collisions continuously introduced components from the target and the grinding media onto the Ti surface and induced mechanical intermixing of the elements, resulting in formation of a complex nanocomposite structure onto the Ti surface. The as-fabricated microstructure consisted of uniformly dispersed WC particles embedded within an integrated metallic matrix composed of an amorphous phase with nanocrystalline grains. The phase composition of the alloyed layers, atomic reactions, and the matrix grain sizes depended on the combination of components introduced onto the Ti surface during milling. The as-fabricated layer exhibited a very high hardness compared to industrial metallic alloys and tool steel materials. This approach could be used for the manufacture of both cemented carbides and amorphous matrix composite layers.

  8. Mechanical alloying in Fe2O3-MO (M: Zn, Ni, Cu, Mg) systems

    DEFF Research Database (Denmark)

    Jiang, Jianzhong; Gerward, Leif; Mørup, Steen

    1999-01-01

    of MFe2O4 ferrites are critically discussed. No significant with respect to ferrite formation rates was observed in open and closed containers used here. In the Fe2O3/ZnO system, a single ferrite phase can be synthesized but in other systems no significant amounts of ferrites are formed by high...

  9. Comparative evaluation of apically extruded debris during root canal instrumentation using two Ni-Ti single file rotary systems: An in vitro study.

    Science.gov (United States)

    Singbal, Kiran; Jain, Disha; Raja, Kranthi; Hoe, Tan Ming

    2017-01-01

    Apical extrusion of debris during instrumentation is detrimental to the patient. The aim of this study was to evaluate the apical extrusion of debris during root canal instrumentation using two single file rotary Ni-Ti systems. Thirty freshly extracted mandibular premolars with straight roots were sterilized and divided into two groups instrumented using: One Shape rotary Ni-Ti system with Endoflare orifice shaper (Group 1) and Neo-Niti rotary Ni-Ti system with C1 orifice shaper (Group 2). Preweighed Eppendorf tubes fitted for each tooth before instrumentation. During instrumentation, 1 mL of distilled water with a 30-gauge needle was used to irrigate after every instrument. Tips of the tooth were irrigated with 2 ml distilled water after removal from Eppendorf tubes. The total volume of irrigant in each group was the same 8 ml. All tubes were incubated at 68°C for 15 days and subsequently weighed. The difference between pre- and post-debris weights was calculated, and statistical analysis was performed using independent t -test and level of significance was set at 0.05. The difference between pre- and post-weights was significantly greater for the One Shape system. The Neolix Niti single file was associated with less extrusion compared to One Shape single file system.

  10. Systematic analysis on mooring systems of floating structures; Futai keiryuho ni kansuru keitoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, K; Suzuki, H; Ide, T [The University of Tokyo, Tokyo (Japan)

    1997-12-31

    Discussed herein are mooring performance requirements of the new types of marine structures now proposed, and characteristic ranges and future expansion potential of the existing mooring systems. The mooring systems studied for floating structures are catenary, single point (multi-leg and single-leg types), fixed structure with fender and tension leg mooring systems. The studied items include extraction of the elements that constitute rigidity of the spring for horizontal mooring, survey on and data collection for each element, determination of element ranges, programs for mooring analysis, assessment of mooring characteristic ranges, and potential development of the characteristic ranges. It is concluded that the existing systems with their current characteristic ranges and future possibility are insufficient for the future marine structures. It is therefore necessary to develop new mooring concepts, instead of expanding the current concepts, in order to meet the mooring performance requirements for the new marine structures. 14 refs., 9 figs., 11 tabs.

  11. Systematic analysis on mooring systems of floating structures; Futai keiryuho ni kansuru keitoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, K.; Suzuki, H.; Ide, T. [The University of Tokyo, Tokyo (Japan)

    1996-12-31

    Discussed herein are mooring performance requirements of the new types of marine structures now proposed, and characteristic ranges and future expansion potential of the existing mooring systems. The mooring systems studied for floating structures are catenary, single point (multi-leg and single-leg types), fixed structure with fender and tension leg mooring systems. The studied items include extraction of the elements that constitute rigidity of the spring for horizontal mooring, survey on and data collection for each element, determination of element ranges, programs for mooring analysis, assessment of mooring characteristic ranges, and potential development of the characteristic ranges. It is concluded that the existing systems with their current characteristic ranges and future possibility are insufficient for the future marine structures. It is therefore necessary to develop new mooring concepts, instead of expanding the current concepts, in order to meet the mooring performance requirements for the new marine structures. 14 refs., 9 figs., 11 tabs.

  12. Spectroscopic features of Ni(2+) ion in PbO-Bi2O3-SiO2 glass system.

    Science.gov (United States)

    Suresh, B; Srinivasa Reddy, M; Siva Sesha Reddy, A; Gandhi, Y; Ravi Kumar, V; Veeraiah, N

    2015-04-15

    Glasses of the composition (30-x)PbO-5Bi2O3-65SiO2: xNiO (with x ranging from 0 to 1.0 mol%) were synthesized. A variety of spectroscopic studies, viz., IR, Raman optical absorption and luminescence properties of these glasses have been carried out as a function of NiO concentration. The analysis of results of all these studies has indicated that the nickel ions occupy both octahedral and tetrahedral positions. However, with the increase of NiO concentration the octahedral occupancy of Ni(2+) ions prevailed over the tetrahedral ions. The luminescence spectra of these glasses have exhibited a broad NIR emission band in region 1100-1500 nm. This band is identified as being due to (3)T2(3F)→(3)A2(3F) octahedral transition of Ni(2+) ions. The luminescence efficiency and cross section have been found to be the highest for the glass containing the highest concentration of NiO. The reasons for such high luminescence efficiency have been discussed in the light of structural variations taking place in the host glass network. Copyright © 2015 Elsevier B.V. All rights reserved.

  13. Experimental and Thermodynamic Study of Selected in-Situ Composites from the Fe-Cr-Ni-Mo-C System

    Directory of Open Access Journals (Sweden)

    Wieczerzak K.

    2016-06-01

    Full Text Available The aim of the study was to synthesize and characterize the selected in-situ composites from the Fe-Cr-Ni-Mo-C system, additionally strengthened by intermetallic compounds. The project of the alloys was supported by thermodynamic simulations using Calculation of Phase Diagram approach via Thermo-Calc. Selected alloys were synthesized in an arc furnace in a high purity argon atmosphere using a suction casting unit. The studies involved a range of experimental techniques to characterize the alloys in the as-cast state, including optical emission spectrometry, light microscopy, scanning electron microscopy, electron microprobe analysis, X-ray diffraction and microhardness tests. These experimental studies were compared with the Thermo-Calc data and high resolution dilatometry. The results of investigations presented in this paper showed that there is a possibility to introduce intermetallic compounds, such as χ and σ, through modification of the chemical composition of the alloy with respect to Nieq and Creq. It was found that the place of intermetallic compounds precipitation strongly depends on matrix nature. Results presented in this paper may be successfully used to build a systematic knowledge about the group of alloys with a high volume fraction of complex carbides, and high physicochemical properties, additionally strengthened by intermetallic compounds.

  14. Revised design calculations of lift systems; Elevator no setsubi keikaku ni okeru kotsu keisan

    Energy Technology Data Exchange (ETDEWEB)

    Maeda, T.; Komaya, K. [Mitsubishi Electric Corp., Tokyo (Japan)

    1998-07-01

    For sufficient transportation capacity and passengers comfort and convenience, it is very important to design the suitable lift systems (e.g., the appropriate number of cages, velocity, capacity etc.) using a model which describes real elevator movements. The procedure used in conventional design calculations for office buildings is to determine the transportation capacity for the up-peak traffic situation using a simple passengers arrival model. This paper presents a new design calculations using balanced traffic model, which can deal with the elevator movements considering passengers arrival rate. As some performance indexes to evaluate the quality of service can be calculated by using this model, lift system designers can determine the appropriate lift facilities as to satisfy their goals. The validity of the proposed model is also shown by comparing with the measured data in real lift systems. 6 refs., 9 figs., 2 tabs.

  15. Solar-Driven Reduction of Aqueous Protons Coupled to Selective Alcohol Oxidation with a Carbon Nitride-Molecular Ni Catalyst System.

    Science.gov (United States)

    Kasap, Hatice; Caputo, Christine A; Martindale, Benjamin C M; Godin, Robert; Lau, Vincent Wing-Hei; Lotsch, Bettina V; Durrant, James R; Reisner, Erwin

    2016-07-27

    Solar water-splitting represents an important strategy toward production of the storable and renewable fuel hydrogen. The water oxidation half-reaction typically proceeds with poor efficiency and produces the unprofitable and often damaging product, O2. Herein, we demonstrate an alternative approach and couple solar H2 generation with value-added organic substrate oxidation. Solar irradiation of a cyanamide surface-functionalized melon-type carbon nitride ((NCN)CNx) and a molecular nickel(II) bis(diphosphine) H2-evolution catalyst (NiP) enabled the production of H2 with concomitant selective oxidation of benzylic alcohols to aldehydes in high yield under purely aqueous conditions, at room temperature and ambient pressure. This one-pot system maintained its activity over 24 h, generating products in 1:1 stoichiometry, separated in the gas and solution phases. The (NCN)CNx-NiP system showed an activity of 763 μmol (g CNx)(-1) h(-1) toward H2 and aldehyde production, a Ni-based turnover frequency of 76 h(-1), and an external quantum efficiency of 15% (λ = 360 ± 10 nm). This precious metal-free and nontoxic photocatalytic system displays better performance than an analogous system containing platinum instead of NiP. Transient absorption spectroscopy revealed that the photoactivity of (NCN)CNx is due to efficient substrate oxidation of the material, which outweighs possible charge recombination compared to the nonfunctionalized melon-type carbon nitride. Photoexcited (NCN)CNx in the presence of an organic substrate can accumulate ultralong-lived "trapped electrons", which allow for fuel generation in the dark. The artificial photosynthetic system thereby catalyzes a closed redox cycle showing 100% atom economy and generates two value-added products, a solar chemical, and solar fuel.

  16. Investigations on installation of the heat exchange system in geothermal wells; Chinetsu koseinai netsukokan system donyu ni kansuru chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    The heat exchange system in geothermal wells is a system that replaces the air source heat pump and uses underground beds or groundwater as a heat source to heat rooms by collecting underground heat in winter, and cool rooms in summer by operating a heat media circuit in reverse direction through the action of a reverse flow valve to discharge heat underground. This paper describes feasibility investigations on the system including its technical trend for introducing the system technology. Technological and economic discussions were given by classifying the intra-well heat exchange device in its installation direction (horizontal loop type and vertical installation type), underground heat exchange media (antifreeze solution/water cyclic system and direct expansion system), and underground heat transfer (heat conduction system and heat convection system). As a result of discussing each system, it was concluded that the following two systems are promising: A = vertical installation, antifreeze solution/water cyclic and heat conduction system, and B = vertical installation, antifreeze solution/water cyclic and heat convection system. Since the system B was found to have better efficiency and economy among both systems, it is necessary to verify an intra-well heat exchange system and operation methods that suit the system B effectively. 21 refs., 8 tabs.

  17. Apically extruded debris with three contemporary Ni-Ti instrumentation systems: an ex vivo comparative study.

    Science.gov (United States)

    Logani, Ajay; Shah, Naseem

    2008-01-01

    To comparatively evaluate the amount of apically extruded debris when ProTaper hand, ProTaper rotary and ProFile systems were used for the instrumentation of root canals. Thirty minimally curved, mature, human mandibular premolars with single canals were randomly divided into three groups of ten teeth each. Each group was instrumented using one of the three instrumentation systems: ProTaper hand, ProTaper rotary and ProFile. Five milliliters of sterile water were used as an irrigant. Debris extruded was collected in preweighed polyethylene vials and the extruded irrigant was evaporated. The weight of the dry extruded debris was established by comparing the pre- and postinstrumentation weight of polyethylene vials for each group. The Kruskal-Wallis nonparametric test and Mann-Whitney U test were applied to determine if significant differences existed among the groups ( PProTaper hand and ProFile system ( P > 0.05). Although ProTaper rotary extruded a relatively higher amount of debris, no statistically significant difference was observed between this type and the ProTaper hand instruments ( P > 0.05). The ProTaper rotary extruded significantly more amount of debris compared to the ProFile system ( PProTaper rotary extruded a significantly higher amount of debris than the ProFile.

  18. Alternative disinfection technology for water purification systems; Josui shori ni okeru enso daitai shodoku gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Aizawa, T. [The Institute of Public Health, Tokyo (Japan)

    1998-09-10

    This paper describes chlorination substituting disinfection technologies used in water purification systems. Chloramine treatment is regarded as effective in reducing trihalomethane (THM). Chlorine is injected in the initial stage in the form of free chlorine to disinfect pathogenic microorganisms in a short time, which is then added with ammonia to convert it into chloramine for further utilization. Chlorine dioxide has not been used in Japan, but introduced in Europe and America to treat THM. Ozone has the strongest oxidizing power, and is used for disinfection, virus inactivation, decomposition of THM precursors, and removal of fungus odor. The ozone treatment will produce aldehyde if an organic matter is present, but aldehyde can be removed by treatment using organismic activated carbon. Ultraviolet ray treatment has an advantage of being difficult of producing byproducts. This system was experimentally compared with free chlorine treatment on disinfection effect, mutagenicity, suppression of producing THM byproducts, and odor removal. In order to assure reliability of microorganismic and chemical safety in tap water supply systems, assurance by considering the entire system is important, not only by operating the disinfection units, but also combining such physical water purifying technologies as coagulation, sedimentation, filtration, and membrane treatment. The use of chlorine substituting disinfectants is also a part of the conception. 6 refs., 8 figs., 5 tabs.

  19. Ni foam-immobilized MIL-101(Cr) nanocrystals toward system integration for hydrogen storage

    CSIR Research Space (South Africa)

    Ren, Jianwei

    2015-10-01

    Full Text Available Metal–organic framework (MOF) materials are only obtained as loose powders with low packing density and thermal conductivity. To enable the developed MOF powdered materials to be utilized in a hydrogen storage system, in this study, MIL-101...

  20. Magnetic properties of spinels GeNi2-xCoxO4 systems: Green's function and high-temperature series expansions

    Science.gov (United States)

    El Grini, A.; Salmi, S.; Masrour, R.; Hamedoun, M.; Bouslykhane, K.; Marzouk, A.; Hourmatallah, A.; Benzakour, N.

    2018-06-01

    The Green's function theory and high-temperature series expansions technical have been developed for magnetic systems GeNi2-xCoxO4. We have applied the Green's function theory to evaluate thermal magnetization and magnetic susceptibility for different values of magnetic field and dilution x, considering all components of the magnetization when an external magnetic field is applied in (x,z)-plane. The second theory combined with the Padé approximants method for a randomly diluted Heisenberg magnet is used to deduce the magnetic phase diagram of GeNi2 - xCoxO4 systems. The critical exponents ? and ? and associated with the magnetic susceptibility ? and the correlation length ξ, respectively, have been deduced. The theoretical results are compared with those given by magnetic measurements.

  1. Mechanical behavior of Ti-Ta-based surface alloy fabricated on TiNi SMA by pulsed electron-beam melting of film/substrate system

    Science.gov (United States)

    Meisner, S. N.; Yakovlev, E. V.; Semin, V. O.; Meisner, L. L.; Rotshtein, V. P.; Neiman, A. A.; D'yachenko, F.

    2018-04-01

    The physical-mechanical properties of the Ti-Ta based surface alloy with thickness up to ∼2 μm fabricated through the multiple (up to 20 cycles) alternation of magnetron deposition of Ti70Ta30 (at.%) thin (50 nm) films and their liquid-phase mixing with the NiTi substrate by microsecond low-energy, high current pulsed electron beam (LEHCPEB: ≤15 keV, ∼2 J/cm2) are presented. Two types of NiTi substrates (differing in the methods of melting alloys) were pretreated with LEHCPEB to improve the adhesion of thin-film coating and to protect it from local delimitation because of the surface cratering under pulsed melting. The methods used in the research include nanoindentation, transmission electron microscopy, and depth profile analysis of nanohardness, Vickers hardness, elastic modulus, depth recovery ratio, and plasticity characteristic as a function of indentation depth. For comparison, similar measurements were carried out with NiTi substrates in the initial state and after LEHCPEB pretreatment, as well as on "Ti70Ta30(1 μm) coating/NiTi substrate" system. It was shown that the upper surface layer in both NiTi substrates is the same in properties after LEHCPEB pretreatment. Our data suggest that the type of multilayer surface structure correlates with its physical-mechanical properties. For NiTi with the Ti-Ta based surface alloy ∼1 μm thick, the highest elasticity falls on the upper submicrocrystalline layer measuring ∼0.2 μm and consisting of two Ti-Ta based phases: α‧‧ martensite (a = 0.475 nm, b = 0.323 nm, c = 0.464 nm) and β austenite (a = 0.327 nm). Beneath the upper layer there is an amorphous sublayer followed by underlayers with coarse (>20 nm) and fine (<20 nm) average grain sizes which provide a gradual transition of the mechanical parameters to the values of the NiTi substrate.

  2. Apically extruded debris with three contemporary Ni-Ti instrumentation systems: An ex vivo comparative study

    Directory of Open Access Journals (Sweden)

    Logani Ajay

    2008-01-01

    Full Text Available Aim: To comparatively evaluate the amount of apically extruded debris when ProTaper hand, ProTaper rotary and ProFile systems were used for the instrumentation of root canals. Materials and Methods: Thirty minimally curved, mature, human mandibular premolars with single canals were randomly divided into three groups of ten teeth each. Each group was instrumented using one of the three instrumentation systems: ProTaper hand, ProTaper rotary and ProFile. Five milliliters of sterile water were used as an irrigant. Debris extruded was collected in preweighed polyethylene vials and the extruded irrigant was evaporated. The weight of the dry extruded debris was established by comparing the pre- and postinstrumentation weight of polyethylene vials for each group. Statistical Analysis: The Kruskal-Wallis nonparametric test and Mann-Whitney U test were applied to determine if significant differences existed among the groups ( P < 0.05. Results: All instruments tested produced a measurable amount of debris. No statistically significant difference was observed between ProTaper hand and ProFile system ( P > 0.05. Although ProTaper rotary extruded a relatively higher amount of debris, no statistically significant difference was observed between this type and the ProTaper hand instruments ( P > 0.05. The ProTaper rotary extruded significantly more amount of debris compared to the ProFile system ( P < 0.05. Conclusion: Within the limitations of this study, it can be concluded that all instruments tested produced apical extrusion of debris. The ProTaper rotary extruded a significantly higher amount of debris than the ProFile.

  3. Microstructures and Dehydrogenation Properties of Ball-milled MgH2-K2Ti6O13-Ni Composite Systems

    Directory of Open Access Journals (Sweden)

    ZHANG Jian

    2016-11-01

    Full Text Available The K2Ti6O13 whisker separate-doped and K2Ti6O13 whisker and Ni powder multi-doped MgH2 hydrogen storage composite systems were prepared by mechanical milling method. The microstructures and dehydrogenation properties of the prepared samples were characterized by some testing methods such as X-ray diffraction (XRD, scanning electron microscope (SEM and differential scanning calorimeter (DSC. The results show that the K2Ti6O13 whisker not only plays the roles in refining the MgH2 crystalline grain, but also inhibit the agglomeration of MgH2 particles in K2Ti6O13 whisker separate-doped system, which results in the decreased dehydrogenation temperature of MgH2 matrix. When the mass ratio of K2Ti6O13 to MgH2 is 3:7, the improvement effect on dehydrogenation properties of MgH2 is the most remarkable. As compared with pure ball-milled MgH2, the dehydrogenation temperature of MgH2 in K2Ti6O13 whisker separate-doped system is decreased by nearly 75℃. For K2Ti6O13 whisker and Ni powder multi-dopedsystem, the dehydrogenation temperature of MgH2 matrix is further decreased compared to K2Ti6O13 whisker separate-doped one due to the dual effects of refined MgH2 crystalline grain by K2Ti6O13 whisker and destabilized MgH2 lattice by Ni solution. As compared with pure ball-milled MgH2, the dehydrogenation temperature of MgH2 in K2Ti6O13 whisker and Ni powder multi-doped system is decreased by nearly 87℃.

  4. Survey of energy load leveling system in Europe; Energy fuka heijunka taisaku ni kansuru Europe chosa

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Y. [Setsunan University, Osaka (Japan). Faculty of Engineering

    1998-05-05

    This paper describes the survey of energy load leveling systems in Europe. In Denmark, especially regional heating is remarkably diffused, and they have 350 plants. With extending the service areas, the energy load leveling has been promoted. For the cogeneration plants of SK Power, the largest electric power company, they have hot water heat storage tanks for regional heat supply with a total capacity 2,200 MWh. The regional heating system in Goeteborg City of Sweden supplies 80% of the total heat demand of the city. Unused energy sources derived from petroleum refining, sewage treatment, and garbage burning are utilized. In Uppsala, they have seasonal heat storage systems using solar heat. The Vienna Regional Heat Supply Corporation supplies heat equivalent to 5,000 GWh a year. Cogeneration plants and garbage burning plants are used as heat sources, and 25% of the total heating in the city is supplied. In Austria, they have an electric power demand with a peak in winter, and they have a pumped-storage power station in Kaprun for the annual load leveling using dump power in summer. This paper also introduces a compressed air storage gas turbine plant at Huntorf of Germany, and a large-scale underground natural gas storage of Gaz de France. 6 figs.

  5. Study of installation of PV systems at campus; Campus ni okeru taiyoko hatsuden donyu ni kansuru kenkyu (taiyo denchi nomi wo secchishita baai no yobi kento)

    Energy Technology Data Exchange (ETDEWEB)

    Tsuboi, N.; Tanaka, H.; Okumiya, M. [Nagoya University, Nagoya (Japan)

    1997-11-25

    In terms of energy consumption, environmentality and economical efficiency in the case of installing the photovoltaic power system on the rooftop of the university campus, a comparative study was conducted with other power generation systems. As objects to be comparatively studied, selected were the all-electric type centralized space heating/cooling system, cogeneration system, nighttime heat storage system and centralized system with solar cells installed. The panel area of the PV system is 10,000m{sup 2} on the rooftop and 7,000{sup 2} on the outer wall. About data on solar radiation, average values obtained in Nagoya were used. Assessment was made in terms of energy consumption amount at the time of operation, system COP, emission amounts of CO2, NOx and SOx at the time of manufacturing and operation, initial cost, running cost, etc. As a result of the study, an effect of reducing global warming gas was admitted in the PV system. However, the initial cost of the solar cell panel was high, and the life cycle cost of the PV system was lower than other systems. 1 ref., 7 figs., 3 tabs.

  6. Evaluation of apically extruded debris during root canal retreatment with several NiTi systems.

    Science.gov (United States)

    Dincer, A N; Er, O; Canakci, B C

    2015-12-01

    To compare the amount of debris extruded apically during root canal retreatment using ProTaper, Mtwo and Reciproc instruments with hand H-files. In total, 60 freshly extracted human mandibular incisor teeth were used. All root canals were prepared with a Reciproc R25 file than filled with Gutta-percha and AH Plus sealer using cold lateral condensation before being assigned randomly to four groups (n = 15 each). In group 1, root fillings were removed with the Protaper Universal retreatment system; ProTaper Universal F3 and F4 instruments were used for the final preparation. In group 2, root fillings were removed with the Mtwo retreatment system; Mtwo size 30, .06 taper, size 35, .06 taper and size 40, .06 taper files were used for the final preparation. In group 3, root fillings were removed with Reciproc R25 instruments; Reciproc R40 instruments were used for the final preparation. In group 4, the root fillings were removed with Gates Glidden burs and sizes 35, 30 and 25 H-files; for final preparation, a size 40 H-file was used. Glass vials were used for debris collection. The vials were weighed before and after Gutta-percha removal. Additionally, the times required for the retreatment procedures were recorded. Data were analysed statistically using one-way analysis of variance. The Reciproc system produced significantly smaller amounts of apical extruded debris than the other groups (P ProTaper groups. The ProTaper and Reciproc groups required significantly less time than the Mtwo and H-file groups (P hand filing. Use of the ProTaper and Reciproc instruments required less time for retreatment procedures than use of the Mtwo or H-file. © 2014 International Endodontic Journal. Published by John Wiley & Sons Ltd.

  7. Stability analyses of urban water supply systems with wastewater reuse; Toshi haisui no junkan riyo ni yoru mizu kyokyu anteika ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, H.; Zhang, S. [Meijo Univ., Nagoya (Japan); Okada, N. [Kyoto Univ., Kyoto (Japan). Disaster Prevention Research Inst.

    1995-10-20

    Wastewater reuse can be considered as a type of water resource development which is expected to improve the aquatic environment, as well as the stability and reliability of municipal water supply systems. To this extent, wastewater reuse has been taken into account in the planning of water supply systems in several Japanese cities. However, to date the effect of wastewater reuse on water supply system stabilization has not been discussed quantitatively, and the relation between waster water reuse rate and water supply system stability has not been analyzed. In this study, a stochastic model has been presented to evaluate the stability of water supply systems with optimal wastewater reuse rate. Some theoretical analyses and numerical studies were performed, and all of the results have shown that the model is reliable for not only basic studies on water supply system stability, but also for practical use as well. 5 refs., 5 figs., 3 tabs.

  8. Electrochemical performance of Ni/TiO{sub 2} hollow sphere in proton exchange membrane water electrolyzers system

    Energy Technology Data Exchange (ETDEWEB)

    Chattopadhyay, Jayeeta; Srivastava, Rohit; Srivastava, Prem Kumar [Birla Institute of Technology, Jharkhand (India)

    2013-08-15

    This work presents the electrocatalytic evaluation of Ni/TiO{sub 2} hollow sphere materials in PEM water electrolysis cell. All the electrocatalysts have shown remarkably enhanced electrocatalytic properties in comparison with their performance in aqueous electrolysis cell. According to cyclic voltammetric results, 0.36 A cm{sup −2} peak current density has been exhibited in hydrogen evolution reaction (HER) from 30 wt% Ni/TiO{sub 2} electrocatalyst. 15 wt% Ni-doped titania sample has shown the best result in oxygen evolution reaction (OER) with the anodic peak current density of 0.3 A cm{sup −2}. In the anodic polarization curves, the performance of 15 wt% Ni/TiO{sub 2} hollow sphere electrocatalyst was evaluated up to 140 mA cm{sup −2} at comparatively lower over-potential value. 20 wt% Ni/TiO{sub 2} hollow sphere electrocatalyst has also shown electrochemical stability in PEM water electrolyzer for 48 h long analysis. The comparative electrocatalytic behavior of hollow spherical materials with non-sphericals is also presented, which clearly shows the influence of hollow spherical structure in greater electrocatalytic activity of the materials. The physical characterization of all the hollow spherical materials is presented in this work, which has confirmed their better electrochemical behavior in PEM water electrolyzer.

  9. Magnetic properties of ZrNi{sub 5-x}In{sub x} (0{<=}x{<=}1) ternary system

    Energy Technology Data Exchange (ETDEWEB)

    Drulis, H. E-mail: drulis@int.pan.wroc.pl; Iwasieczko, W.; Zaremba, V

    2003-01-01

    Magnetisation was measured for the series of ZrNi{sub 5-x}In{sub x} (x=0, 0.25. 0.50, 0.75 and 1.0) alloys over the temperature range 1.75-700 K in applied field up to 50 kOe. All materials studied crystallise in the AuGe{sub 5}-type crystal structure. Alloys with x=0, 0.25 and 0.5 were found to be ferromagnets with relatively high transition temperatures, T{sub c}, dependent on the indium concentration (from T{sub c}=368 K for x=0.5 up to 647 K for x=0). The measured saturation magnetic moments are fully connected with nickel atom; the Zr and In moments are negligible. An environment-dependent model for the formation of Ni moments is suggested. The critical concentration of Ni for the onset of long-range ferromagnetic order in ZrNi{sub 5-x}In{sub x} is estimated as 4.5 atoms/f.u. (75 at%), approximately. The long-range magnetic order is determined by the number of the nearest neighbours of Ni atoms occupying 16(e) positions. Alloys with x=0.75 and 1.0 exhibit Pauli paramagnetism.

  10. Electrochemical performance of Ni/TiO_2 hollow sphere in proton exchange membrane water electrolyzers system

    International Nuclear Information System (INIS)

    Chattopadhyay, Jayeeta; Srivastava, Rohit; Srivastava, Prem Kumar

    2013-01-01

    This work presents the electrocatalytic evaluation of Ni/TiO_2 hollow sphere materials in PEM water electrolysis cell. All the electrocatalysts have shown remarkably enhanced electrocatalytic properties in comparison with their performance in aqueous electrolysis cell. According to cyclic voltammetric results, 0.36 A cm"−"2 peak current density has been exhibited in hydrogen evolution reaction (HER) from 30 wt% Ni/TiO_2 electrocatalyst. 15 wt% Ni-doped titania sample has shown the best result in oxygen evolution reaction (OER) with the anodic peak current density of 0.3 A cm"−"2. In the anodic polarization curves, the performance of 15 wt% Ni/TiO_2 hollow sphere electrocatalyst was evaluated up to 140 mA cm"−"2 at comparatively lower over-potential value. 20 wt% Ni/TiO_2 hollow sphere electrocatalyst has also shown electrochemical stability in PEM water electrolyzer for 48 h long analysis. The comparative electrocatalytic behavior of hollow spherical materials with non-sphericals is also presented, which clearly shows the influence of hollow spherical structure in greater electrocatalytic activity of the materials. The physical characterization of all the hollow spherical materials is presented in this work, which has confirmed their better electrochemical behavior in PEM water electrolyzer

  11. Electronic structure of graphene on Ni surfaces with different orientation

    International Nuclear Information System (INIS)

    Pudikov, D.A.; Zhizhin, E.V.; Rybkin, A.G.; Rybkina, A.A.; Zhukov, Y.M.; Vilkov, O. Yu.; Shikin, A.M.

    2016-01-01

    An experimental study of the graphene, synthesized by propylene cracking on Ni surfaces with different orientation: (100) and (111), using angle-resolved photoemission, has been performed. It has been shown that graphene on Ni(111) had a perfect lateral structure due to consistency of their lattices, whereas graphene/Ni(100) consisted of a lot of domains. For both systems electronic structure was quite similar and demonstrated a strong bonding of graphene to the underlying Ni surface. After Au intercalation the electronic structure of graphene in both systems was shifted to the Fermi level and became linear in the vicinity of the K point of the Brillouin zone. - Highlights: • Graphene on Ni(111) is well-ordered, whereas on Ni(100) – multi-domain. • Graphene on Ni(111) and Ni(100) is strongly bonded with substrate. • Intercalation of Au atoms restores the linearity in dispersion and makes graphene quasi-free on both Ni(100) and Ni(111).

  12. Direct Determination Of γ′ / γ′+γ / γ Phase Boundaries In Ni-Al-Cr System Based On Enthalpy Of Formation Results Obtained By Calorimetric Solution Method

    Directory of Open Access Journals (Sweden)

    Maciąg T.

    2015-09-01

    Full Text Available The work is a continuation of the research carried out on a high-temperature calorimeter solution type on alloys from Ni-Al-Cr system. Thanks to the construction innovation introduced by authors the device allows the determination of the formation enthalpy of alloys at ambient and elevated temperatures. Experiments described in this article were carried out at three temperatures: 873K, 996K and 1150K on the alloys of the chemical compositions from the Ni75Al25 ÷ Ni87Cr13 section of the Ni-Al-Cr system. On the basis of changes in the enthalpy of formation with increasing chromium content of the alloys, points corresponding to places of phase boundaries γ′ / γ′+γ / γ in Ni-Al-Cr system were determined. A similar relationship was observed in previous studies of alloys from Ni75Al25÷Ni75Cr25 section. For precise determination of these characteristic points a statistical model was applied

  13. Physico-chemical characterisations and catalytic performance of Ni-based catalyst systems for dry reforming of methane

    Energy Technology Data Exchange (ETDEWEB)

    Vlach, K.; Hoang, D.L.; Schneider, M.; Pohl, M.M.; Armbruster, U.; Martin, A. [Rostock Univ. (Germany). Leibniz-Institut fuer Katalyse e.V.

    2012-07-01

    In this study, ternary perovskite type oxides LaNi{sub x}Cu{sub 1-x}O{sub 3} (x = 0, 0.2, 0.5, 0.8, 1) were synthesized using NaOH and diethylenetriaminepentaacetic acid (H{sub 5}DTPA). The catalysts resulting from perovskite precursors exhibit catalytic activities for CO{sub 2} reforming of CH{sub 4} at 700 C that increase with a higher Ni content. Characterization methods showed that the activation led to formation of small metallic Ni/Cu particles. Methane and carbon dioxide conversions varied from 20 to 65% for CH{sub 4} and 3 to 58% for CO{sub 2}. Selectivities from 46 to 93% for CO and from 4 to 64% for H{sub 2} were obtained. (orig.)

  14. Framework of information system assessment based on function and quality; Kino to hinshitsu ni motozuku joho system hyoka no wakugumi

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, M.; Hishitani, J. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1996-03-01

    As for function and quality of information system, an assessment method of productivity at planning and at completion has been developed. In this method, functional size expressing the size of functional kinds provided by the system, value-added size expressing the size with corrected functional size in response to the quality level of each function, and production size expressing the size of products and processes under the given conditions were employed as indexes for evaluating the size of system. In addition, a method using the quality property tree has been developed. In this method, to evaluate the quality level which is essential for calculating the value-added size, users and providers evaluate the system quality from their own viewpoints. By this system, validity of user`s demand and validity/efficiency of realizing process can be evaluated for client/server type systems from the systematic viewpoint in a whole life cycle of systems from development planning to abandonment of systems. 24 refs., 5 figs., 3 tabs.

  15. Application of dual-anneal diffusion multiples to the effective study of phase diagrams and phase transformations in the Fe–Cr–Ni system

    International Nuclear Information System (INIS)

    Cao, Siwei; Zhao, Ji-Cheng

    2015-01-01

    A dual-anneal diffusion multiple (DADM) approach is developed for effective determination of intermediate-temperature phase diagrams that are critical to the establishment of reliable thermodynamic databases. A large amount of phase equilibrium data was obtained from DADMs to construct the Fe–Cr–Ni isothermal sections at 1200, 900, 800 and 700 °C. The DADM approach is also a systematic and effective way to study phase precipitation from wide ranges of compositions, thus generating rich atlases of microstructures induced by various transformations. The results from this study indicate that the body-centered cubic to sigma phase transformation in the Fe–Cr–Ni system took place initially through a massive transformation mechanism

  16. THE N.I. PIROGOV'S CONTRIBUTION TO THE SURGERY OF MUSCULOSKELETAL SYSTEM (ON THE OCCASION OF THE 200-th ANNIVERSARY OF THE BIRTH

    Directory of Open Access Journals (Sweden)

    R. M. Tikhilov

    2010-01-01

    Full Text Available Based on the analysis of the scientific heritage the authors presented the contribution of the great Russian surgeon N.I. Pirogov in the development of surgery of the locomotor system. Discussed in detail next lines of activity of N.I. Pirogov being of interest of trauma and orthopedic surgeons, in particular the: anatomical and physiological approach to studying the issues of surgery of extremities, development of scientific and organizational bases in the domestic military-field surgery, the Pirogov's ideas in the field of reconstructive surgery of the extremities, as well as its contribution to the reforming of surgical education in Russia and improvement of the domestic surgical instruments.

  17. Modelling of the solid state electrochromic system WO/sub 3//HSbO/sub 3/ x 2H/sub 2/O/Ni(OH)/sub 2/

    Energy Technology Data Exchange (ETDEWEB)

    Lagzdons, J L; Bajars, G E; Lusis, A R [AN Litovskoj SSR, Vilnyus. Inst. Fiziki Poluprovodnikov

    1984-08-16

    The problem of compatibility of electrochromic materials (ECM) with the solid electrolyte and the selection of solid electrolytes has been studied by means of modelling. The model electrochromic system (ECS) containing cathodically coloring ECM (WO/sub 3/), anodically coloring ECM (Ni(OH)/sub 2/), and a solid proton electrolyte (HSbO/sub 3/ x 2H/sub 2/O), as well as ECS containing H/sub x/WO/sub 3/ as counterelectrode has been investigated by the aid of cyclic voltammograms. Results show the compatibility of both the cathodic (WO/sub 3/) and anodic (Ni(OH)/sub 2/) ECM with solid proton electrolyte. Effective electrochromic devices can be worked out on their basis.

  18. Matching of wind turbine type and system scale to wind conditions; Chiten no fukyo ni taisuru furyoku turbine no keitai to sytem taikaku no seigosei ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Wakui, T. [Japan Society for the Promotion of Science, Tokyo (Japan); Tanzawa, Y. [Nippon Institute of Technology, Saitama (Japan); Ota, E. [Waseda University, Tokyo (Japan). School of Science and Engineering; Hashizume, T.

    2000-09-25

    The matching of the wind turbine type and system scale of the stand-alone wind turbine generator system to wind conditions is investigated using our dynamic simulation model. This paper examines three types of wind turbines: the Darrieus-Savonius hybrid wind turbine, the Darrieus turbine proper and the up-wind Propeller turbine. These systems are mainly operated at a constant tip speed ratio, which refers to a maximum power coefficient. As a computed result of the net extracting energy under fluctuations of wind speed and direction, the Darrieus turbine proper has little conformability to wind fluctuations because of its output characteristics. As for other wind turbines, large-scale systems do not always have advantages over small-scale systems as the effect of the dynamic characteristics. Furthermore, it is confirmed that the net extracting power of the Propeller turbine under wind direction fluctuations is much reduced when compared with that of the hybrid wind turbine. Thus, it is concluded that the appropriate wind turbine type and system scale exist for each wind condition. (author)

  19. Certain structural properties of the phase-binder of the alloys in W-Ni-Fe system

    International Nuclear Information System (INIS)

    Minakova, R.V.; Storchak, N.A.; Verkhovodov, P.A.; Bazhenova, L.G.; Poltoratskaya, V.L.

    1980-01-01

    The paper is concerned with effect of cooling conditions and subsequent heat treatment on grain size, lattice parameter and distribution of composing elements in the phase-binder of the W-Ni-Fe-alloy. The X-ray diffraction analysis was used to determine that the phase-binder structure depends on the heat treatment after liquid-phase sintering and consists of coarse grains with a diameter 3-8 mm for the annealed W-Ni-Fe-alloy decreasing to 40-100 μm at slow cooling. The determined change in solubility and of grain interface enrichment with tungsten in the phase-binder

  20. Report on an investigation into heat pumps in China in fiscal 1995; 1995 nendo Chugoku ni okeru heat pump system ni kansuru chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    The paper surveyed the present status, the status of spread, and the technical development of the technology of heat pumps for residential and industrial uses in China. Main examples of installation of heat pumps are cited below: steam drive absorption type refrigerators in Beijing; sea water heat source turbo heat pumps in Qingdao; hot water drive absorption type refrigerators in Beijing; oil-fueled absorption type water cooling and heating appliances in Beijing; ice latent heat storage airconditioning systems using electrically-driven screw chiller in Beijing; temperature rising systems using electrically-driven heat pump of the solar energy utilization warm water swimming pool in Guangdong Province; cooling water supply using waste heat utilization absorption type refrigerator of the alcohol plant in Shandong Province; timber drying systems using electrically-driven heat pump, and marine product cultivation systems in Quangdong Province; distillation systems using steam turbine heat pump in Jiangxi Province. The demand for heat pumps is expected to be 20 million units under the 9th 5-year plan, and the development of equipment is thought to go toward promotion of energy conservation, low noise, multi-type or multi-functional air conditioning equipment, and computer use. 137 figs., 40 tabs.

  1. The Al-rich region of the Al-Mn-Ni alloy system. Part II. Phase equilibria at 620-1000 oC

    International Nuclear Information System (INIS)

    Balanetskyy, S.; Meisterernst, G.; Grushko, B.; Feuerbacher, M.

    2011-01-01

    Research highlights: → Phase equilibria in the Al-rich region of the Al-Mn-Ni alloy system were studied at 1000, 950, 850, 750, 700, 645 and 620 deg. C by means of SEM, TEM, powder XRD and DTA. → Three ternary thermodynamically stable intermetallics, the φ-phase (Al 5 Co 2 -type, hP26, P63/mmc; a = 0.76632(16), c = 0.78296(15) nm), the κ-phase (κ-Al 14.4 Cr 3.4 Ni l.1 -type, hP227, P63/m; a = 1.7625(10), c = 1.2516(10) nm), and the O-phase (O-Al 77 Cr 14 Pd 9 -type, Pmmn, oP650,: a = 2.3316(16), b = 1.2424(15), c = 3.2648(14) nm), as well as three ternary metastable phases, the decagonal D 3 -phase with periodicity about 1.25 nm, the Al 9 (Mn,Ni) 2 -phase (Al 9 Co 2 -type, P1121/a, mP22; a = 0.8585(16), b = 0.6269(9), c = 0.6205(11) nm, β = 95.34(10) o ) and the O 1 -phase (basecentered orthorhombic, a ∼ 23.8, b ∼ 12.4, c ∼ 32.2 nm) were revealed. → The existence of a thermodynamically stable R-phase of stoichiometry Al 60 Mn 11 Ni 4 , reported earlier in literature, was not confirmed in the present study. - Abstract: Phase equilibria in the Al-rich region of the Al-Mn-Ni alloy system were studied at 1000, 950, 850, 750, 700, 645 and 620 o C. Three ternary thermodynamically stable intermetallics, the φ-phase (Al 5 Co 2 -type, hP26, P6 3 /mmc; a = 0.76632(16), c = 0.78296(15) nm), the κ-phase (κ-Al 14.4 Cr 3.4 Ni l.1 -type, hP227, P6 3 /m; a = 1.7625(10), c = 1.2516(10) nm), and the O-phase (O-Al 77 Cr 14 Pd 9 -type, Pmmn, oP650,: a = 2.3316(16), b = 1.2424(15), c = 3.2648(14) nm), as well as three ternary metastable phases, the decagonal D 3 -phase with periodicity about 1.25 nm, the Al 9 (Mn,Ni) 2 -phase (Al 9 Co 2 -type, P112 1 /a, mP22; a = 0.8585(16), b = 0.6269(9), c = 0.6205(11) nm, β = 95.34(10) o ) and the O 1 -phase (base-centered orthorhombic, a ∼ 23.8, b ∼ 12.4, c ∼ 32.2 nm) were revealed. Their physicochemical behaviour in the Al-Mn-Ni alloy system was studied.

  2. Studies on energy system for an energy-saving society; Sho energy gata shakai ni okeru energy system kento

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    The system to which new energy technology and energy saving technology were introduced was constructed for case studies of urban areas including core cities and the peripheral areas, and the quantitative analysis was conducted on environmental effects, etc. In the energy supply system model, the following element technologies were all considered: cogeneration system, sewage water heat, river water heat, the photovoltaic power generation, energy storage/heat storage/cold heat storage, adsorption type refrigerator, etc. Also considered were power interchange between clusters, system power buying/power selling, heat interchange or no heat interchange, etc. As a result, it was found that when constructing the energy system which synthetically takes into account thermoelectric ratios, rates of simultaneous loads, ratios of daytime/nighttime in the energy supply and demand in the urban area, the energy saving effect multiplicatively increases, and the energy system using cogeneration and unused energy such as refuse and sewage in the urban area and river water brings an energy saving effect of 32% especially in the concentrated cluster. 83 figs., 45 tabs.

  3. Water monitoring and its information management system in China; Chugoku ni okeru suishitsu monitoring to joho kanri system

    Energy Technology Data Exchange (ETDEWEB)

    Quan, H.

    1996-01-10

    This paper summarizes the water monitoring system (WMS) in China applied mainly to surface water and operated within the competence of the Environmental Protection Agency. The WMS consists of a national water monitoring network and a water information system that monitors surface water periodically. The WMS comprises water monitoring stations classified from class 1 to class 4, which are located in 2,222 locations. Stations from class 1 to class 3 are operated by using computers, but class 4 stations are still incapable to use floppy disks to perform information transmission. When an information management system is completed at the China-Japan Friendship Environmental Protection Center being constructed by gratis assistance from the Japanese Government, transmission of water quality data will become possible by means of the cable line system in addition to the table system and the floppy system. The water quality data are published to general people in the forms of Chinese gazette for the environmental conditions, the environment yearbook, and the reports on environmental quality. However, the more important is to publish more publications to make people aware of the actual state of water pollution and have them cooperate in environment preservation. 4 refs., 1 fig.

  4. The Thermodynamic Characterization of ZrCo–H, HfCo−H, HfNi−H and Zr{sub 1–x}HfxNi(Co) Alloy–H Systems

    Energy Technology Data Exchange (ETDEWEB)

    Flanagan, Ted B., E-mail: ted.flanagan@uvm.edu; Noh, Hak; Luo, Suifang

    2016-08-25

    ZrCo and HfCo intermetallic compounds have the same cubic (CsCl-type) structure and their ternary (Zr{sub 1−x}Hf{sub x})Co alloys are also cubic. ZrNi and HfNi intermetallic compounds have the orthorhombic structure (CrB-type) and the ternary (Zr{sub 1−x}Hf{sub x})Ni alloys also have this structure. Thermodynamic data for hydride formation and decomposition in ZrCo, HfCo and HfNi intermetallic compounds have been determined from reaction calorimetry and from pressure-composition isotherms. Thermodynamic data have been determined for the three ternary alloys: (Zr{sub 0.75}Hf{sub 0.25})Co, (Zr{sub 0.50}Hf{sub 0.50})Co, and (Zr{sub 0.25}Hf{sub 0.75})Co and the four ternary alloys: (Zr{sub 0.875}Hf{sub 0.125})Ni, (Zr{sub 0.75}Hf{sub 0.25})Ni, (Zr{sub 0.50}Hf{sub 0.50})Ni, and (Zr{sub 0.25}Hf{sub 0.75})Ni. This offers the opportunity to learn how the thermodynamic properties of the ternary alloy-H systems change with the stoichiometry of alloys with the same structure. - Highlights: • Calorimetric enthalpies determined for H absorption by ZrCo, HfCo, HfNi are determined. • Ternary alloys, e.g., Zr{sub 1−x}Hf{sub x}Ni, prepared and characterized by x-ray diffraction. • Isotherms for the ternary alloys give thermodynamic parameters for H solution.

  5. Results of photovoltaic power generation system operation in Tokyo Electric Power Company; Tokyo Denryoku ni okeru taiyoko hatsuden setsubi no unten jisseki ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Fukuda, H; Itokawa, K [Tokyo Electric Power Co. Inc., Tokyo (Japan)

    1996-10-27

    A report was made on the measurement of data and the results of the analysis at 14 sites of photovoltaic power generation facilities operated under system interconnection by Tokyo Electric Power Company. This type of system is provided in 40 sites as of the end of fiscal 1995, generating 479kw. The items measured were the generated electric energy at all 14 sites, and the quantity of solar radiation, outside air temperature, panel temperature, etc., at limited sites; and the capacity of each equipment, azimuth and inclination of the panel were also recorded simultaneously. Hourly values were used for the analysis. Five minute values were utilized, however, in the examination of the cause of lowered output and in the situation recognition of the influence of the shade or the change of weather. The utilization factor of the facilities was in the average 10.8% in fiscal 1994 and 10.7% in fiscal 1995. The factor decreased slightly unless the panel azimuth faced due south. The utilization factor at the panel inclination of 35 degrees and 45 degrees showed both 10.4% through the year making no difference. The system seemed to show no overwhelming possibilities in coping with electric power demand. The reason was that deviation existed for 2 hours or so in the peak and that reliability was low as basic power facilities. However, it was determined that the system be continuously examined in future. 9 figs., 1 tab.

  6. Study on fault diagnostic system using modularized knowledge; Mojuru gata chishiki wo mochiita ijo shindan system ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Shimada, Y.; Sayama, H.; Suzuki, K. [Okayama Univ. (Japan). Dept. of Industrial and Mechanical Engineering

    1997-08-15

    Recently, a fault diagnostic expert system was prosperously developed as an objective of chemical plants and nuclear power plants. In this paper, a fault diagnostic method using modularized knowledge was proposed, a fault diagnostic system was constructed for an experimental plant, and the effectiveness of this method was clarified by carrying out a fault diagnostic experiment. The characteristics of the proposed fault diagnostic system were as follows: The necessary knowledge for diagnosing faults was made into each process element. Based on this method, the revision and addition of a knowledge base could be carried out in each element, and the design change of a plant could be flexibly corresponded by only changing the related part of the process flow graph. The estimated results were stored into the working memory, not only faults of an element in which faults resulted could be estimated, but also the fault propagating path could be clarified. 8 refs., 6 figs., 3 tabs.

  7. Microfabrication of magnetostrictive beams based on NiFe film doped with B and Mo for integrated sensor systems

    KAUST Repository

    Alfadhel, Ahmed; Gianchandani, Y.; Kosel, Jü rgen

    2012-01-01

    This paper reports the development of integrated micro-sensors consisting of 1 -µm-thick magnetostrictive cantilevers or bridges with 500 µm in length and conducting interrogation elements. The thin films are fabricated by sputter deposition of Ni

  8. `Power storage system` dealing with leveling of electric power use; Denryoku riyo no heijunka ni kotaeru `denryoku chozo system`

    Energy Technology Data Exchange (ETDEWEB)

    Igarashi, M. [Meidensha Corp., Tokyo (Japan)

    1996-06-28

    An overview is given on the development situation of a Zn-Br battery as a power storage system. The system is aimed at storing excess power at night and supplying the on-load demand during daytime. The power storage technology requires a large output and capacity of MWh level, long term stability and durability, and cost as low as pumped storage power generation. Four kinds of batteries have been examined to cope with the conditions, in which development of Zn-Br batteries along with Na-S batteries is in progress towards practicability. As a power conversion method for this system, GTO has been employed for a large capacity unit and IGBT for a medium/small capacity unit. The reliability of the Zn-Br batteries against leakage was improved by laminating each cell by hot plate welding. The service life was improved by using a material with a high bromine resistance in place of the conventional electrode constituent material. Although the battery efficiency was influenced by each resistance of electrode, film and electrolytic solution, distance between electrodes, temperature, etc., these correlations were clarified so as to establish the simulation technology. At present, the system realizes 50kW and 40kWh/m{sup 3}. 1 ref., 8 figs.

  9. Demonstrative study for the wind and solar hybrid power system. 2; Furyoku taiyoko hybrid hatsuden system ni kansuru jissho kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kimura, Y; Sakuma, H; Ushiyama, I [Ashikaga Institute of Technology, Tochigi (Japan)

    1996-10-27

    In order to verify the complementary relationship between wind and solar energy, the long-term field test of the hybrid power system was conducted at the natural energy square of Ashikaga Institute of Technology. The solar cell blade windmill composed of a Savonius windmill and flexible solar cells applied to swept buckets was also prepared. As a result, the wind power generation was promising mainly in the winter period including the late fall and early spring, while solar one was stable all the year through although it was slightly poor in winter. Stable power generation was thus achieved by combining wind energy with solar energy. As the whole data of other wind and solar power generation systems at the square were analyzed for every month, the same conclusion as the solar cell blade windmill was obtained as follows: the wind power generation in Ashikaga area is promising in Nov.-March from the field test result for 16 months, solar power generation is stable all the year through, the hybrid power system is effective in Nov.-April, and the solar cell blade windmill is equivalent to the hybrid power system. 3 refs., 5 figs.

  10. Exclusive study of Ni+Ni and Ni+Au central collisions: phase coexistence and spinodal decomposition; Etude exclusive des collisions centrales Ni+Ni et Ni+Au: coexistence de phase et decomposition spinodale

    Energy Technology Data Exchange (ETDEWEB)

    Guiot, B

    2002-12-01

    The INDRA multidetector allowed us to study the Ni+Ni collisions at 32A MeV and the Ni+Au collisions at 52,4 MeV. Central collisions leading to 'quasi-fused' systems were isolated using multidimensional analysis techniques: the Discriminant Analysis and the Principal Component Analysis. Comparison with a statistical model shows that the selected events are compatible with thermodynamical equilibrium. The average thermal excitation energy is 5A MeV for both systems. Calculations of heat capacities show that the deexcitation of the hot sources are akin to a liquid-gas phase transition of nuclear matter. Indeed heat capacities exhibit a negative branch as expected for a phase transition of a finite system. The dynamics of this phase transition has been investigated by applying the charge correlation method. An enhanced production of events with equal-sized fragments has been evidenced for Ni+Au at 52A MeV. No signal was found for Ni+Ni at 32A MeV. Finally this method was improved by taking into account the total charge conservation. The signal is seen more clearly for Ni+Au at 52A MeV, but is ambiguous for Ni+Ni at 32A MeV. The path followed in the state diagram, or the involved time scales, seem to be different for these systems. (authors)

  11. Ni hombres ni mujeres providenciales

    OpenAIRE

    Montaño Virreira, Sonia

    2000-01-01

    Debo advertir a la y el lector de este texto que lo que a continuación se presenta no es, ni de lejos, una propuesta realista, si por ella entendemos la traducción, enclave mujer, de las actuales tendencias de liderazgo político vigentes en la región. Por el contrario, intento argumentaren favor de un liderazgo que supere el caudillismo como estilo y se aproxime al máximo hacia el respeto de las formas, entendiendo que sin ellas no es posible construir la democracia. Para hacerlo reviso rápid...

  12. Development of offroad unmanned dump truck navigation system. Dump truck mujin soko system no kaihatsu ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Horii, Z [Nittetsu Mining Co. Ltd., Tokyo (Japan)

    1992-08-25

    A large offroad unmanned dump truck navigation system has been developed, and is in practical operation mounted on dump trucks at Torigatayama Limestone Quarry of Nittetsu Mining Company. The system functions in a manual dump truck navigation mode, wireless navigation mode, and unmanned control mode. The unmanned control mode further includes a mode to navigate the truck on a predetermined course with its data having been input in a computer and a mode that when the truck was moved on a course under a wireless control, the computer learns the course and drives the truck autonomously thereafter. The safety measures are divided into the hardware safety function to detect abnormalities in brakes and other vehicle parts, and the software safety functions of data communications, sensor action check, and prevention of collision of trucks with each other. The system has resulted in a productivity of average one-way travel distance of 345 m, and average unmanned navigation cycle time of 9 minutes and 26 seconds for a transportation efficiency of 541 t/hour/truck, having reached at least the manned operation level. 4 figs., 1 tab.

  13. Role of ventilation systems in the prevention of hospital infection; Innai kansen boshi ni okeru kanki system no yakuwari

    Energy Technology Data Exchange (ETDEWEB)

    Ayliffe, G.

    1996-05-05

    This paper investigates and considers the actual state of hospital infection. The 80% or more of surgical wound infection is self-infection, for which the factor is the microorganisms that exist in a surgical wound at the completion of an operation. Airborne infection is generally due to staphylococcus aureus. There rarely is a bacteria carrier, and the germ is dispersed from him in some instances. Staphylococcus epidermis sticks to prosthesis, propagates and causes wound infection in rare occasions. Clostridium perfringens and escherichia coli also sometimes cause self-infection from wound. An ordinary plenum ventilation system is less effective for the prevention of wound infection. A remarkable example for reduction in infection is the employment of an ultra clean air system in joint replacement operations, showing reduction in joint septicemic infection from 1.5 to 0.3%. A vertical air flow system may be effectively employed in an operation room for the purpose of improving the air stream. No interrelation exists between the total number of indoor bacteria and infection without staphylococcus aureus. A person infected by methicillin-resistant staphylococcus has to be isolated into a unit. 13 refs., 1 fig., 1 tab.

  14. Exclusive study of Ni+Ni and Ni+Au central collisions: phase coexistence and spinodal decomposition

    International Nuclear Information System (INIS)

    Guiot, B.

    2002-12-01

    The INDRA multidetector allowed us to study the Ni+Ni collisions at 32A MeV and the Ni+Au collisions at 52,4 MeV. Central collisions leading to 'quasi-fused' systems were isolated using multidimensional analysis techniques: the Discriminant Analysis and the Principal Component Analysis. Comparison with a statistical model shows that the selected events are compatible with thermodynamical equilibrium. The average thermal excitation energy is 5A MeV for both systems. Calculations of heat capacities show that the deexcitation of the hot sources are akin to a liquid-gas phase transition of nuclear matter. Indeed heat capacities exhibit a negative branch as expected for a phase transition of a finite system. The dynamics of this phase transition has been investigated by applying the charge correlation method. An enhanced production of events with equal-sized fragments has been evidenced for Ni+Au at 52A MeV. No signal was found for Ni+Ni at 32A MeV. Finally this method was improved by taking into account the total charge conservation. The signal is seen more clearly for Ni+Au at 52A MeV, but is ambiguous for Ni+Ni at 32A MeV. The path followed in the state diagram, or the involved time scales, seem to be different for these systems. (authors)

  15. Preparation and characterization of a supported system of Ni2P/Ni12P5 nanoparticles and their use as the active phase in chemoselective hydrogenation of acetophenone

    Science.gov (United States)

    Costa, Dolly C.; Soldati, Analía L.; Pecchi, Gina; Bengoa, José Fernando; Marchetti, Sergio Gustavo; Vetere, Virginia

    2018-05-01

    Ni2P/Ni12P5 nanoparticles were obtained by thermal decomposition of nickel organometallic salt at low temperature. The use of different characterization techniques allowed us to determine that this process produced a mixture of two nickel phosphide phases: Ni2P and Ni12P5. These nickel phosphides nanoparticles, supported on mesoporous silica, showed activity and high selectivity for producing the hydrogenation of the acetophenone carbonyl group to obtain 1-phenylethanol. This is a first report that demonstrates the ability of supported Ni2P/Ni12P5 nanoparticles to produce the chemoselective hydrogenation of acetophenone. We attribute these special catalytic properties to the particular geometry of the Ni–P sites on the surface of the nanoparticles. This is an interesting result because the nickel phosphides have a wide composition range (from Ni3P to NiP3), with different crystallographic structures, therefore we think that different phases could be active and selective to hydrogenate many important molecules with more than one functional group.

  16. Moessbauer Study of the Ni/Ca0.8Sr0.2Ti1-xFexO3-α Catalyst System for Partial Oxidation of Methane to Synthesis Gas

    International Nuclear Information System (INIS)

    Homonnay, Z.; Nomura, K.; Hamakawa, S.; Hayakawa, T.; Juhasz, G.; Kuzmann, E.; Vertes, A.

    2002-01-01

    The Ni/Ca 0.8 Sr 0.2 TiO 3 catalyst system prepared by the citrate method shows high activity in partial oxidation of methane to synthesis gas. It is assumed that the interaction of Ni with the perovskite lattice may be responsible for the increased catalytic activity. 1% 57 Fe dopant substituted for Ti was used in order to see if the presence of Ni has any perturbation effect on the structure of the perovskite. One may expect systematic changes in the Moessbauer parameters of the substitutional Fe impurity as a function of the NiO content if the bulk properties of the perovskite are affected. Samples with different Ni/Ca 0.8 Sr 0.2 Ti 0.99 57 Fe 0.01 O 3-α ratios from 0:1 to 1:1, and others having Fe substitutions for Ti up to 30%, all prepared by the citrate method, have been investigated. The Moessbauer spectra contained doublets of paramagnetic Fe 3+ and Fe 4+ species as well as paramagnetically relaxed Fe 3+ . These species were assigned to the bulk perovskite, the perovskite surface and the NiO/perovskite interface. The perturbation of the perovskite structure by Ni could not be verified.

  17. Technology assessment on a hydrogen fueled aircraft system; 1980 nendo suiso nenryo kokuki system ni kansuru technology assissment

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1981-03-01

    This paper describes technology assessment on a hydrogen fueled aircraft system. Indispensable as technological assignments are structuring different safety systems including prevention of leakage and ignition, not to speak of developing an airframe structure that considers cryogenic and brittle nature of liquefied hydrogen. Operation related industries would be subjected to increased burdens, such as purchase and servicing of new implements and materials, but the liquefied hydrogen industry will have a chance of growing largely with wide repercussions. In the environmental aspect, the aircraft will have less CO and SOx emission in exhaust gas and lower noise than the conventional jet aircraft. Technological problems to be solved in the development include the safety of fuel tanks, safety assurance measures, and liquefied hydrogen of the required amount to be supplied easily and at low cost. To meet these requirements, noticeable progress is demanded in hydrogen manufacturing technologies. What is also required is explosion-proof safety that does not have to require crews to take special considerations in take-off and landing, not to speak of during flight. This also applies to fuel feeding and servicing on the ground. Considerations must be given that rise in operation cost should not be excessive. (NEDO)

  18. R and D contract management systems in the USA; Beikoku ni okeru R and D contract kanri system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-02-01

    Outlined herein are the US Government's R and D contract management, which is considered to have greatly contributed to promotion of innovation in the USA. The procedures for the R and D contracts are managed through the mechanisms of the (government procurement), following the FAR (Federal Acquisition Regulations) that govern the government procurement rules. The procedural flow includes planning, public announcement of inviting the application documents, examination of the applications, negotiations, granting the fund, project management, suspension of the project and completion of the project. The audition sometimes takes several years to complete. The staff managing the individual contract is fairly specialized, and a team consisting of several professionals is responsible for each project. The substantial lifetime training systems the contract officers can receive are established. The alternative contract system encourages the applications from consortiums, and private enterprises frequently tie up with academic organizations to apply for the funds. Granting the funds to consortiums have many advantages, e.g., cost sharing and technological transfer. (NEDO)

  19. Possibility of EV with solar cells on the new traffic system; Shinkotsu system ni okeru solar car no kanosei

    Energy Technology Data Exchange (ETDEWEB)

    Fujii, I; Kojima, S [Meiji University, Tokyo (Japan)

    1997-11-25

    A possibility of a new traffic system was studied for a solar car which is light in weight, small in size and low in speed (cruising speed: 20 km/h) and does not need so much power because of the use for short distance. In the new traffic system, people travel short distance in city by solar car, and use trains for travel between cities. By installing solar cells on roofs, etc. of houses and buildings such as garages around stations, power needed for solar car and incidentally required can be supplied. Assuming the short distance transportation, the car is for one person with a height of luggage space of 70cm, mean length of 165cm, and floor height of 50cm above the ground. In case that the power generation by solar cells (256.5W) is at maximum with no shading during travel on conditions of load weight of 10kg, personnel weight of 70kg, and total weight of 250kg, it was found that solar cells can supply 89% of the required output under test road travel at speed of 20 km/h. A viability of the solar car proposed here is great. A possibility at the time of mode road travel is also studied. 10 refs., 3 figs., 1 tab.

  20. Proposal on an automatic ship shell member arranging system; Sengai buzai jido seiri system no teian ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Yoshitomi, T; Azumi, N [Kyushu Kyoritsu University, Fukuoka (Japan)

    1996-04-10

    Based on an investigation on the current status of member sorting and on analysis on restrictions to automation of the ship shell process, this paper describes a basic plan for a system to automate sorting works for members. The system is intended for power saving in new fields, improvement in safety and hygiene, and prevention of errors in member sorting. The automation is intended on small bones that are large in number and tend to cause errors in sorting. The area of an elbow plate of 2,000 mm {times} 800 mm thought to be small bones of the largest class is 0.80 m{sup 2}, and the weight of the small bones is made almost constant at 80 kgf. Therefore, a robot working as a major component is selected from models that have a capability of carrying a weight of 100 kgf and are capable of numerical control. A robot body is mounted on a moving trolley to sort out members cut out from steel sheets. Because the data to operate the robot can be created automatically from the data base, sorting errors due to human mistakes decrease. Amount of the member finding and handling works also decrease in the assembly process. 4 figs.

  1. Load leveling by a battery system in an electric power system with a photovoltaic system; Taiyoko hatsuden system ga donyusareta denryoku keito no chikudenchi ni yoru fuka heijunka

    Energy Technology Data Exchange (ETDEWEB)

    Kenmoku, Y.; Sakakibara, T. [Toyohashi University of Technology, Aichi (Japan); Nakagawa, S. [Maizuru College of Technology, Kyoto (Japan); Kawamoto, T. [Shizuoka University, Shizuoka (Japan)

    1997-11-25

    Storage battery-aided load leveling system is introduced into a power system having a photovoltaic power generation (PV) system, and the effect of the introduction is examined. For this purpose, the resultant improvement on the load factor and reduction in the annual cost are evaluated. Used as the load factor in the studies are the hourly records of power transmitted and received by Chubu Electric Power Co., Inc., in 1995. The output of the PV system is calculated using weather data collected in Nagoya City in the same year. Findings as the result of the studies are stated below. The maximum power is suppressed but a little if it is only the PV system that is introduced into the system. That is, a 2GW PV system introduced into the system suppresses the maximum power only by 0.5GW or less. The maximum power is suppressed more effectively when a storage battery is added, and it decreases linearly with an increase in the storage battery capacity. As for reduction in the cost, the reducing effect is higher when the rate of storage battery capacity/introduced PV capacity is higher in the presence of an introduced PV capacity of 0.8GW or more. 2 refs., 7 figs., 3 tabs.

  2. Sputtering yields of Si and Ni from the I sub(1-x)Si sub(x) system studied by Rutherford backscattering spectrometry

    International Nuclear Information System (INIS)

    Kim, Su-Chol; Yamaguchi, Satoru; Kataoka, Yoshihide; Iwami, Motohiro; Hiraki, Akio; Satou, Mamoru; Fujimoto, Fuminori.

    1982-01-01

    Sputtering yields of Si and Ni from thin layer films of Ni-Si compounds (Ni sub(1-x)Si sub(x)), including the pure materials (Ni and Si), caused by 5keV Ar + ion bombardment were investigated using backscattering spectrometry. The sputtering yield for Si from Ni sub(1-x)Si sub(x) increased with increasing Si concentration. However, there is an abrupt decrease in the yield for Si concentrations above NiSi 2 to pure Si. This is in clear contrast to the sputtering yield of Ni from Ni sub(1-x)Si sub(x) which increased with increasing Ni concentration monotonously. These results are discussed on the basis of both the difference in the atomic density and the electronic state of the alloy. (author)

  3. Joining of Ni-TiC FGM and Ni-Al Intermetallics by Centrifugal Combustion Synthesis

    International Nuclear Information System (INIS)

    Ohmi, Tatsuya; Matsuura, Kiyotaka; Iguchi, Manabu; Mizuma, Kiminori

    2008-01-01

    A centrifugal combustion synthesis (CCS) process has been investigated to join a Ni-Al intermetallic compound and a Ni-TiC cermet. The cermet, a tubular graphite mold, and a green compact of reactants consisting of Al, Ni and NiO were set in a centrifugal caster. When the combustion synthesis reaction was induced in the centrifugal force field, a synthesized molten Ni-Al alloy flowed into the graphite mold and joined to the cermet. The soundness of the joint interface depended on the volume percentage of TiC phase in the cermet. A lot of defects were formed near the interface between the Ni-TiC cermet and the cast Ni-Al alloy when the volume percentage of TiC was 50% or higher. For this kind of cermet system, using a functionally graded cermet such as Ni-10 vol.%TiC/Ni-25 vol.%TiC/Ni-50 vol.%TiC overcame this difficulty. The four-point bending strength of the joined specimen consisting of the three-layered FGM cermet and cast Ni-29 mol%Al alloy was 1010 MPa which is close to the result for a Ni-29 mol%Al alloy specimen

  4. A micro-computed tomographic evaluation of dentinal microcrack alterations during root canal preparation using single-file Ni-Ti systems.

    Science.gov (United States)

    Li, Mei-Lin; Liao, Wei-Li; Cai, Hua-Xiong

    2018-01-01

    The aim of the present study was to evaluate the length of dentinal microcracks observed prior to and following root canal preparation with different single-file nickel-titanium (Ni-Ti) systems using micro-computed tomography (micro-CT) analysis. A total of 80 mesial roots of mandibular first molars presenting with type II Vertucci canal configurations were scanned at an isotropic resolution of 7.4 µm. The samples were randomly assigned into four groups (n=20 per group) according to the system used for root canal preparation, including the WaveOne (WO), OneShape (OS), Reciproc (RE) and control groups. A second micro-CT scan was conducted after the root canals were prepared with size 25 instruments. Pre- and postoperative cross-section images of the roots (n=237,760) were then screened to identify the lengths of the microcracks. The results indicated that the microcrack lengths were notably increased following root canal preparation (Pfiles. Among the single-file Ni-Ti systems, WO and RE were not observed to cause notable microcracks, while the OS system resulted in evident microcracks.

  5. 3D reconstruction and characterization of carbides in Ni-based high carbon alloy in a FIB-SEM system

    Energy Technology Data Exchange (ETDEWEB)

    Bala, Piotr [AGH Univ. of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow (Poland); AGH Univ. of Science and Technology, Academic Centre of Materials and Nanotechnology, Krakow (Poland); Tsyrulin, Katja; Jaksch, Heiner [Carl-Zeiss, Oberkochen (Germany); Stepien, Milena [AGH Univ. of Science and Technology, Academic Centre of Materials and Nanotechnology, Krakow (Poland)

    2015-07-15

    Dual beam focused ion beam scanning electron microscopes (FIB-SEMs) are well suited for characterizing micron and submicron size microstructural features in three dimensions throughout a serial-sectioning experiment. In this article, a FIB-SEM instrument was used to collect morphological, crystallographic, and chemical information for an Ni-Ta-Al-Cr alloy of high carbon content. The alloy has been designed to have excellent tribological properties at elevated temperatures. The morphology, spatial distribution, scale, and degree of interconnection of primary carbides in the Ni-Ta-Al-Cr-C alloy was assessed via serial sectioning in a casting cross-section. The 3D reconstructions showed that the primary carbides and dendrites were forming a dendrite surrounded by primary carbide network over the entire cross-section. Additionally, the morphology and spatial distribution of secondary carbides after heat treatment was determined.

  6. First-principles calculations for the elastic properties of Ni-base model superalloys: Ni/Ni3Al multilayers

    International Nuclear Information System (INIS)

    Yun-Jiang, Wang; Chong-Yu, Wang

    2009-01-01

    A model system consisting of Ni[001](100)/Ni 3 Al[001](100) multi-layers are studied using the density functional theory in order to explore the elastic properties of single crystal Ni-based superalloys. Simulation results are consistent with the experimental observation that rafted Ni-base superalloys virtually possess a cubic symmetry. The convergence of the elastic properties with respect to the thickness of the multilayers are tested by a series of multilayers from 2γ'+2γ to 10γ'+10γ atomic layers. The elastic properties are found to vary little with the increase of the multilayer's thickness. A Ni/Ni 3 Al multilayer with 10γ'+10γ atomic layers (3.54 nm) can be used to simulate the mechanical properties of Ni-base model superalloys. Our calculated elastic constants, bulk modulus, orientation-dependent shear modulus and Young's modulus, as well as the Zener anisotropy factor are all compatible with the measured results of Ni-base model superalloys R1 and the advanced commercial superalloys TMS-26, CMSX-4 at a low temperature. The mechanical properties as a function of the γ' phase volume fraction are calculated by varying the proportion of the γ and γ' phase in the multilayers. Besides, the mechanical properties of two-phase Ni/Ni 3 Al multilayer can be well predicted by the Voigt–Reuss–Hill rule of mixtures. (classical areas of phenomenology)

  7. Coating Properties of WC-Ni Cold Spray Coating for the Application in Secondary Piping System of Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Kim, JeongWon; Kim, Seunghyun; Kim, Ji Hyun [UNIST, Ulsan (Korea, Republic of)

    2015-10-15

    As a result of FAC(flow accelerated corrosion), severe accidents, failure of carbon steel like a Mihama Unit-3 occurred. Chemical composition change of carbon steel or coating to inner surface is one of methods to improve corrosion properties. Among them, thermal spray coating is convenient solution to apply at industry. Powder is melted at blast furnace and ejected to substrate. After adhesion, substrate and coating layer is cooled down and coated layer protects steel from corrosion finally. However high thermal energy is transferred to substrate and coating layer so it leads high thermal residual stress in coating procedure. Besides, high temperature for melting powder makes unexpected chemical reaction of powder like an oxidation or carburization. Whereas, cold spray uses low temperature comparing with other thermal spray. Thermal energy is used for not melting powder but high kinetic energy of powder and plastic deformation during collision. Therefore, fuel such as oxygen-acetylene gas is not needed. It needs carrier gas, compressed air, nitrogen or helium, to increase kinetic energy of powder and move powder to substrate. Comparing cold spray with high velocity oxy fuel (HVOF), one of thermal spray, cold spray coating layer contains only WC and Co. One of other problem about WC is brittleness during coating. To improve deformability of WC, binder metal is added. For example, Co, Cr, Ni, Cu, Al, Fe or etc. Additionally, binder metal lowering melting temperature of composite powder increases coating properties. Among them, Co which is widely used as binder metal maintains mechanical properties like a hardness and improves corrosion properties. Therefore Co is not suitable for binder metal of WC coating. In contrast, Ni has better corrosion resistance to alkaline environment and makes lower melting temperature. Moreover, in a view of cold spray, FCC structure has better deformability than BCC or HCP, and BCC has lowest deformability. WC is BCC structure so it

  8. Investigations on international standardization of environmental management systems. 3; Kankyo kanri system no kokusai hyojunka ni kansuru chosa. 3

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Japan as an ISO member country identifies the state of discussions in the environmental management standard deliberation committee at ISO. Investigations were performed on international standardization of environmental management systems for the purpose of participating and cooperating in preparing and establishing international standards related to environmental management, and playing part in working, solving and improving environmental problems. Under the circumstances that environmental problems are drawing worldwide interest, the International Organization for Standardization (ISO) has been carrying out since 1993 deliberations on environmental management standards to institutionalize environmental management rules to check effects of business activities on the environment. The International Organization for Standardization/Environmental Management Technical Committee (ISO/TC207) was installed, at which series number of 1400 order was allotted for environmental management related standards, and major standards have come to a final stage of standard formulation at the TC207 Oslo conference in June 1995. In Japan, the Ministry of International Trade and Industry has established an environmental management standard deliberation committee composed of people of experience or academic standing to advance discussions on how the environmental management should be in business entities through deliberations on ISO standards.

  9. Influence of material and testing parameters on the lifetime of TBC systems with MCrAlY and NiPtAl bondcoats

    Energy Technology Data Exchange (ETDEWEB)

    Song, Peng

    2012-08-31

    The oxidation behavior of the bond coat is an important factor determining the lifetime of thermal barrier coatings (TBC) in the advanced gas turbine components. In the present work, the effect of various testing parameters, such as hot/cold dwell time, heating/cooling rate, atmosphere composition on the bondcoat oxidation and associated TBC lifetime has been investigated. The range of coating systems included Electron Beam - Physical Vapor Deposited (EB-PVD) and Air Plasma Sprayed (APS) TBC's with MCrAlY (M = Ni, Co) and NiPtAl-bondcoats of various compositions. The effect of the testing parameters strongly depended on the type and properties of the studied system. The lifetime of EB-PVD TBC systems with conventional MCrAlY and NiPtAl bondcoats forming uniform, flat alumina scales was found to be limited by critical scale thickness, upon which a rapid crack propagation at the scale/bondcoat interface results in macroscopic failure. The lifetime of such systems was found to be affected by factors, which influence the scale growth rate and adherence (in particular by oxygen partial pressure (pO{sub 2}) and water vapor content in the test gas in the case of MCrAlY), whereas the temperature cyclic frequency showed no significant effect. NiPtAl bondcoats showed a superior behavior than the conventional MCrAlY-bondcoats due to slower scale growth rate and better scale adherence. For EB-PVD TBC systems with Zr-doped MCrAlYbondcoats the lifetime is mainly determined by the crack growth rate in the inhomogeneous inwardly growing oxide scales, whereas the lifetime is not dependent on the pO{sub 2} but rather on the cyclic frequency. For APS TBC systems the bondcoat oxidation is only one of several factors determining the ceramic topcoat lifetime. Therefore the oxide scale adherence is of less importance for lifetime of APS TBCs as compared to EBPVD TBCs. For the former systems, the cracks initiated at the convex asperities of the rough oxide scale / bondcoat interface

  10. FY1995 transduction method and CAD database systems for integrated design; 1995 nendo transduction ho to CAD database togo sekkei shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    Transduction method developed by the research coordinator and Prof. Muroga is one of the most popular methods to design large-scale integrated circuits, and thus used by major design tool companies in USA and Japan. The major objectives of the research is to improve capability and utilize its reusable property by combining with CAD databases. Major results of the project is as follows, (1) Improvement of Transduction method : Efficiency, capability and the maximum circuit size are improved. Error compensation method is also improved. (2) Applications to new logic elements : Transduction method is modified to cope with wired logic and FPGAs. (3) CAD databases : One of the major advantages of Transduction methods is 'reusability' of already designed circuits. It is suitable to combine with CAD databases. We design CAD databases suitable for cooperative design using Transduction method. (4) Program development : Programs for Windows95 and developed for distribution. (NEDO)

  11. FY1995 transduction method and CAD database systems for integrated design; 1995 nendo transduction ho to CAD database togo sekkei shien system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    Transduction method developed by the research coordinator and Prof. Muroga is one of the most popular methods to design large-scale integrated circuits, and thus used by major design tool companies in USA and Japan. The major objectives of the research is to improve capability and utilize its reusable property by combining with CAD databases. Major results of the project is as follows, (1) Improvement of Transduction method : Efficiency, capability and the maximum circuit size are improved. Error compensation method is also improved. (2) Applications to new logic elements : Transduction method is modified to cope with wired logic and FPGAs. (3) CAD databases : One of the major advantages of Transduction methods is 'reusability' of already designed circuits. It is suitable to combine with CAD databases. We design CAD databases suitable for cooperative design using Transduction method. (4) Program development : Programs for Windows95 and developed for distribution. (NEDO)

  12. Investigation on a Sensitive Chemiluminescence System Based on Ni(IV Complex to Determine Two β2-Agonist Drugs in Urine and Swine Feed and Their Mechanism

    Directory of Open Access Journals (Sweden)

    Xiao Dong

    2018-04-01

    Full Text Available Veterinary drug residues, particularly traces of β2-agonists, can cause various kinds of harmful impact to the environment and public health. Here, a sensitive chemiluminescence (CL method incorporated with a flow injection analysis is developed for the determination of two β2-agonists [i.e., salbutamol (SAL and terbutaline (TEB]. The system is based on the CL reaction of Ni(IV complex with luminol in alkaline solutions, whereas SAL and TEB can significantly enhance CL intensities. Under optimum conditions, CL intensities are proportional to the SAL and TEB concentration in the range of 1.0 × 10−9 M to 5.0 × 10−7 M and 1.0 × 10−9 M to 1.0 × 10−7 M, respectively. The limits of detection (3σ are 1.0 × 10−11 M for TEB, and 1.3 × 10−11 for SAL respectively. Relative standard deviations (n = 11 are less than 2% for 5.0 × 10−8 M SAL and TEB. Possible reaction mechanisms for the CL system are suggested based on the CL system spectra, Ni(IV complex oxidation characteristics, and electron spin resonance (ESR techniques. The proposed method has been applied to the analysis of urine and swine feed samples with satisfactory results.

  13. Constituent phase diagrams of the Al-Cu-Fe-Mg-Ni-Si system and their application to the analysis of aluminium piston alloys

    Energy Technology Data Exchange (ETDEWEB)

    Belov, N.A. [Moscow Institute of Steel and Alloys, Leninsky prosp. 4, Moscow 119049 (Russian Federation); Eskin, D.G. [Netherlands Institute for Metals Research, Rotterdamseweg 137, 2628AL Delft (Netherlands)]. E-mail: deskin@nimr.nl; Avxentieva, N.N. [Moscow Institute of Steel and Alloys, Leninsky prosp. 4, Moscow 119049 (Russian Federation)

    2005-10-15

    The evaluation of phase equilibria in quinary systems that constitute the commercially important Al-Cu-Fe-Mg-Ni-Si alloying system is performed in the compositional range of casting alloys by means of metallography, electron probe microanalysis, X-ray diffractometry, differential scanning calorimetry, and by the analysis of phase equilibria in the constituent systems of lesser dimensionality. Suggested phase equilibria are illustrated by bi-, mono- and invariant solidification reactions, polythermal diagrams of solidification, distributions of phase fields in the solid state, and isothermal and polythermal sections. Phase composition of as-cast alloys is analyzed in terms of non-equilibrium solidification. It is shown that the increase in copper concentration in piston Al-Si alloys results in the decrease in the equilibrium solidus from 540 to 505 deg C. Under non-equilibrium solidification conditions, piston alloys finish solidification at {approx}505 deg C. Iron is bound in the quaternary Al{sub 8}FeMg{sub 3}Si{sub 6} phase in low-iron alloys and in the ternary Al{sub 9}FeNi and Al{sub 5}FeSi phases in high-iron alloys.

  14. Microstructural evolution of the system Ni-ZrO{sub 2}-SiO{sub 2} synthesized by the sol-gel process

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Murillo, A., E-mail: angarciam@ipn.m [Instituto Politecnico Nacional, CICATA Unidad Altamira, Km. 14.5, Carretera Tampico-Puerto Industrial Altamira, C.P. 89600 Altamira, Tamaulipas (Mexico); Instituto Politecnico Nacional, CIITEC, Cerrada CECATI S/N Col. Sta. Catarina, Del. Azcapotzalco, Mexico D.F. 02250 (Mexico); Carrillo Romo, F. de J. [Instituto Politecnico Nacional, CICATA Unidad Altamira, Km. 14.5, Carretera Tampico-Puerto Industrial Altamira, C.P. 89600 Altamira, Tamaulipas (Mexico); Instituto Politecnico Nacional, CIITEC, Cerrada CECATI S/N Col. Sta. Catarina, Del. Azcapotzalco, Mexico D.F. 02250 (Mexico); Torres Huerta, A.M.; Dominguez Crespo, M.A.; Ramirez Meneses, E. [Instituto Politecnico Nacional, CICATA Unidad Altamira, Km. 14.5, Carretera Tampico-Puerto Industrial Altamira, C.P. 89600 Altamira, Tamaulipas (Mexico); Terrones, H. [Instituto Potosino de Investigacion Cientifica y Tecnologica, Camino a la Presa San Jose 2055. Colonia Lomas 4 seccion S.L.P. (Mexico); Flores Vela, A. [Instituto Politecnico Nacional, CICATA Unidad Altamira, Km. 14.5, Carretera Tampico-Puerto Industrial Altamira, C.P. 89600 Altamira, Tamaulipas (Mexico)

    2010-04-16

    The analysis of the structural changes corresponding with composition and temperature is fundamental for understanding the applications of ceramic glass. In particular, the system ZrO{sub 2}-SiO{sub 2} is commonly used in the ceramic industry due to the high chemical stability and superior resistance for dissolution during firing in glazes. This work is focused on the synthesis of Ni doped ZrO{sub 2}-SiO{sub 2} powders with different Zr:Si molar ratios (20:80, 50:50 and 70:30) by sol-gel process. For purposes of comparison, un-doped ZrO{sub 2}-SiO{sub 2} systems were also prepared. TEOS, zirconium propoxide and nickel chloride hexahydrate were used as precursors of the SiO{sub 2}, ZrO{sub 2} and ion dopant, respectively. The obtained xerogels were thermally treated from 300 to 1300 {sup o}C in order to follow their structural evolution. FT-IR results show the corresponding bands of the M-O bonds related to the formation of zircon at high temperatures, while XRD analyses display t-ZrO{sub 2} with traces of m-ZrO{sub 2} at the evaluated temperatures; also, between 1200 and 1300 {sup o}C, the zircon compound (ZrSiO{sub 4}) was detected. It was observed that inserting nickel as a dopant has a significant effect on the structural and morphological characteristics. From the comparison of the doped and un-doped specimens, we hypothesize that the presence of Ni and the heat treatment promote the stabilization and crystallization of the zircon phase at molar ratios higher than 50Zr:50Si, or Ni is incorporating into the ZrO{sub 2} phase, provoking oxygen vacancies and leading to tetragonal phase stabilization.

  15. Atomistic calculations of hydrogen interactions with Ni3Al grain boundaries and Ni/Ni3Al interfaces

    International Nuclear Information System (INIS)

    Baskes, M.I.; Angelo, J.E.; Moody, N.R.

    1995-01-01

    Embedded Atom Method (EAM) potentials have been developed for the Ni/Al/H system. The potentials have been fit to numerous properties of this system. For example, these potentials represent the structural and elastic properties of bulk Ni, Al, Ni 3 Al, and NiAl quite well. In addition the potentials describe the solution and migration behavior of hydrogen in both nickel and aluminum. A number of calculations using these potentials have been performed. It is found that hydrogen strongly prefers sites in Ni 3 Al that are surrounded by 6 Ni atoms. Calculations of the trapping of hydrogen to a number of grain boundaries in Ni 3 Al have been performed as a function of hydrogen chemical potential at room temperature. The failure of these bicrystals under tensile stress has been examined and will be compared to the failure of pure Ni 3 Al boundaries. Boundaries containing a preponderance of nickel are severely weakened by hydrogen. In order to investigate the potential embrittlement of γ/γ' alloys, trapping of hydrogen to a spherical Ni 3 Al precipate in nickel as a function of chemical potential at room temperature has been calculated. It appears that the boundary is not a strong trap for hydrogen, hence embrittlement in these alloys is not primarily due to interactions of hydrogen with the γ/γ interface

  16. Reaction-mechanism evolution for the system 20Ne + 60Ni at intermediate energies: from massive transfer to fragmentation

    International Nuclear Information System (INIS)

    Andreozzi, F.; Brondi, A.; D'Onofrio, A.; LaRana, G.; Moro, R.; Perillo, E.; Romano, M.; Terrasi, F.; Dayras, R.; Dumont, H.; Gadi, F.; Gomez del Campo, J.

    1993-01-01

    Mass and charge distributions for heavy residues in the reaction 20 Ne + 60 Ni at 50 MeV/nucleon were measured by in-beam and off-line γ-ray spectrometry. The stacked foil method was used to obtain information about the distribution of the velocity component parallel to the beam direction for target-like residues. The comparison of the data to the predictions of a participant-spectator model indicates that an 8% width for the dissipated energy distribution accounts for the observed projected ranges. (orig.)

  17. The Use of Austenitic Stainless Steel versus Monel (Ni-Cu) Alloy in Pressurized Gaseous Oxygen (GOX) Life Support Systems.

    Science.gov (United States)

    1985-03-01

    Carbon Steel AISI 1025 2. AISI 4140 3. Ductile Iron 4. 304 Stainless Steel 5. 17-4 PH Stainless Steel 6. 410 Stainless Steel 7. Lead Babbit 8. Tin Babbit...9. Inconel 718 i0. Aluminum 1100 30 6- AISI 4140 steel, all the results were negative (no ignitions). The single exception was with a sample of 4140 ...rates for austenitic stainless steel ( AISI 316), Monel (63% Ni - 34% Cu) and carbon steel (AMS 5050) tubing in this environment. 12 - 14-660 A 7

  18. Not in Traffic Surveillance (NiTS)

    Data.gov (United States)

    Department of Transportation — The Not-in-Traffic Surveillance (NiTS) system is a virtual data collection system designed to provide counts and details regarding fatalities and injuries that occur...

  19. Solubility Modeling of the Systems Ni(NO3)2–H2O and Fe(NO3)3–Ni(NO3)2–H2O with the Extended Universal Quasichemical (UNIQUAC) Model

    DEFF Research Database (Denmark)

    Arrad, Mouad; Kaddami, Mohammed; El Goundali, Bahija

    2017-01-01

    regressed simultaneously using the available databank but with additional experimental data recently published in the open literature. A revision for previously published parameters for the nickel ion, new parameters for the iron(III) nitrate system, and interaction parameters for the Ni2+–Fe3+ interaction...

  20. Nitriding behavior of Ni and Ni-based binary alloys

    Energy Technology Data Exchange (ETDEWEB)

    Fonovic, Matej

    2015-01-15

    precipitate-free microstructure known as expanded austenite or S-phase, which can enhance surface hardness, fatigue properties and corrosion properties.Nitriding of multicomponent Ni-based alloys is usually applied in the industry. Nevertheless, the understanding of nitriding is mostly based on phenomenological research and experience. Thereby there is still absence of complete understanding of nitriding of Ni-based alloys, which requires further detailed investigations. Since studying the nitrided multicomponent alloys is complicated, in this thesis fundamental investigations were performed on pure nickel and binary Ni-based model alloys.This thesis focuses on the nitriding behavior of pure nickel, which will result with an thermodynamic evaluation of the Ni-N system. Furthermore, deeper insights in the nitriding behavior of the binary Ni-based alloys is obtained upon nitriding Ni-4 wt.% Ti and Ni-2 wt.% Ti (Ni-5 at.% Ti and Ni-2.5 at.% Ti) alloys. Thereby, the development of large residual macrostresses parallel to the surface of the specimen is related with the N concentration gradient in the nitrided zone.

  1. Enthalpy of mixing of liquid Ni-Zr and Cu-Ni-Zr alloys

    International Nuclear Information System (INIS)

    Witusiewicz, V.T.; Sommer, F.

    2000-01-01

    Since the Al-Cu-Ni-Zr system is a basis for the production of bulk amorphous materials by rapid solidification techniques from the liquid state, it is of great scientific interest to determine the partial and the integral thermodynamic functions of liquid and undercooled liquid alloys. Such data, as was pointed out previously, are important in order to understand their extremely good glass-forming ability in multicomponent metallic systems as well as for processing improvements. In order to measure the thermodynamic properties of the Al-Cu-Ni-Zr quaternary, it is necessary to have reliable thermochemical data for its constituent canaries and ternaries first. In a series of articles, the authors have reported in detail the thermodynamic properties of liquid Al-Cu, Al-Ni, Cu-Ni, Cu-Zr, Al-Zr, Al-Cu-Ni, and Al-Cu-Zr alloys. This article deals with the direct calorimetric measurements of the partial and the integral enthalpies of mixing of liquid Ni-Zr and Cu-Ni-Zr alloys and the heat capacity of liquid Ni 26 Zr 74 . In a subsequent article, the authors will present similar data for the liquid ternary Al-Ni-Zr and for the liquid quaternary Al-Cu-Ni-Zr alloys

  2. Effects of PEG-Induced Water Deficit in Solanum nigrum on Zn and Ni Uptake and Translocation in Split Root Systems

    Directory of Open Access Journals (Sweden)

    Urs Feller

    2015-06-01

    Full Text Available Drought strongly influences root activities in crop plants and weeds. This paper is focused on the performance of the heavy metal accumulator Solanum nigrum, a plant which might be helpful for phytoremediation. The water potential in a split root system was decreased by the addition of polyethylene glycol (PEG 6000. Rubidium, strontium and radionuclides of heavy metals were used as markers to investigate the uptake into roots, the release to the shoot via the xylem, and finally the basipetal transport via the phloem to unlabeled roots. The uptake into the roots (total contents in the plant was for most makers more severely decreased than the transport to the shoot or the export from the shoot to the unlabeled roots via the phloem. Regardless of the water potential in the labeling solution, 63Ni and 65Zn were selectively redistributed within the plant. From autoradiographs, it became evident that 65Zn accumulated in root tips, in the apical shoot meristem and in axillary buds, while 63Ni accumulated in young expanded leaves and roots but not in the meristems. Since both radionuclides are mobile in the phloem and are, therefore, well redistributed within the plant, the unequal transfer to shoot and root apical meristems is most likely caused by differences in the cell-to-cell transport in differentiation zones without functional phloem (immature sieve tubes.

  3. Electronic structure of Ni-- and Ni2--ethylene cluster complexes

    International Nuclear Information System (INIS)

    Basch, H.; Newton, M.D.; Moskowitz, J.W.

    1978-01-01

    The electronic structure of metal cluster--ethylene complexes has been investigated by carrying out ab initio bonding pair-correlated, self-consistent field, and configuration interaction (CI) calculations on the NiC 2 H 4 and Ni 2 C 2 H 4 species. The π-NiC 2 H 4 and π-Ni 2 C 2 H 4 cluster complexes are found to be bound, the former only with CI, while disigma-Ni 2 C 2 H 4 has only a repulsive Ni 2 --C 2 H 4 ground state potential curve. The bonding in the π-type cluster complexes can be described as follows: The metal atom configuration is 3d 9 4s 1 with the 4s hybridized (by the metal 4p) away from the ethylene molecule, thereby allowing the π orbital to form a dative sigma bond with the metal atom. The bonding interaction is promoted by the presence of a second nickel atom behind the first one, leading to a 4s orbital electron deficiency of the bonded nickel atom and thus making this nickel atom a better electron acceptor. Back donation from the occupied metal 3d into the ethylene π* molecular orbital also takes place to some extent, and thus both features of the classical Dewar--Chatt--Duncanson model are observed. The π-Ni 2 C 2 H 4 species is analyzed in terms of the addition of a bare nickel atom to a π-NiC 2 H 4 cluster complex, with concomitant stabilization of the orbitals of the bonded nickel atom. A study of the excited electronic states of π-NiC 2 H 4 shows that low-lying 4s→π* and 3d→π* (M→L) charge transfer transitions are predicted. The former is not observed experimentally, probably due to the diffuse nature of the 4s orbital. The relationship between small cluster--ethylene complex systems and ethylene chemisorption on a nickel metal surface is discussed

  4. Microfabrication of magnetostrictive beams based on NiFe film doped with B and Mo for integrated sensor systems

    KAUST Repository

    Alfadhel, Ahmed

    2012-03-09

    This paper reports the development of integrated micro-sensors consisting of 1 -µm-thick magnetostrictive cantilevers or bridges with 500 µm in length and conducting interrogation elements. The thin films are fabricated by sputter deposition of NiFe doped with B and Mo, and the magnetic properties are enhanced by field annealing, resulting in a coercivity of 2.4 Oe. In operation, an alternating current applied to the interrogation elements magnetizes the magnetostrictive structures. The longitudinal resonant frequency is detected as an impedance change of the interrogation elements. The magnetostrictive micro-beams provide high resonant frequencies—2.95 MHz for the cantilever and 5.46 MHz for the bridge—which can be exploited to develop sensors of high sensitivity.

  5. Uva "Niágara Rosada" cultivada no sistema orgânico e armazenada em diferentes temperaturas "Niágara Rosada" grapes cultivated under organic system and stored at different temperatures

    Directory of Open Access Journals (Sweden)

    Alessandra M. Detoni

    2005-09-01

    Full Text Available O sistema de cultivo, as cultivares, as condições de colheita e pós-colheita têm efeito direto na conservação e qualidade das uvas. Diante disso, este trabalho objetivou avaliar o efeito do tempo (0, 7, 14, 21, 28 e 35 dias e da temperatura de armazenamento (1, 14 e 24ºC na qualidade pós-colheita da uva "Niágara Rosada" cultivada no sistema orgânico. O fator limitante para o armazenamento foi o elevado índice de degrana, porém, as uvas ainda possuíam qualidade para o consumo, por observar a manutenção do teor de sólidos solúveis totais, acidez total titulável e pH. Dentre as avaliações químicas, o teor de sólidos solúveis totais, a acidez total titulável e o teor de vitamina C foram as únicas variáveis que apresentaram diminuição acentuada para as frutas armazenadas a 24ºC, resultando em um curto período de armazenamento. As frutas armazenadas a 14ºC não apresentaram grandes variações nas características químicas, mantendo uma boa qualidade para o consumo por até 28 dias de armazenamento. A melhor temperatura para a conservação das frutas foi 1ºC, em que as uvas alcançaram 35 dias de armazenamento sem grande variação na qualidade para o consumo.The cultivation system, the cultivars, the crop conditions and post harvest, can effect the conservation and quality of the grapes. This work aimed the evaluation of the affect of the time of storage (0, 7, 14, 21, 28 and 35 days and the storage temperature (1, 14 and 24ºC in the quality of the grape "Niágara Rosada" pots harvest cultivated in the organic system. The limiting point for the storage was the high number of free berries observed, however the grapes still have quality for consumption, because observing without modification in the tenor of total soluble, the total titratable acidity and pH. Among the chemical assay, the determination of the tenor of total soluble solids, the total titratable acidity and the vitamin tenor C were the only ones which

  6. Magnetic properties of the Kagome staircase mixed system (Co{sub x}Ni{sub 1-x}){sub 3}V{sub 2}O{sub 8}

    Energy Technology Data Exchange (ETDEWEB)

    Qureshi, Navid

    2008-09-26

    The orthooxovanadates of the 3d transition metals M{sub 3}V{sub 2}O{sub 8}, known as Kagome staircase systems, reveal interesting magnetic properties due to their crystal structure. Although these compounds are isostructural for M=Co,Ni,Mn,Cu, they differ considerably with respect to their magnetic phase transitions and magnetic structures. As the magnetic ions are situated on corners of cornersharing triangles, geometric frustration plays an important role in this system. This is not only confined to the fact, that the antiferromagnetic structures exhibit reduced magnetic moments, but apparently also to the ferromagnetic structure of Co{sub 3}V{sub 2}O{sub 8}, which exhibits a strongly reduced Co moment of 1.54 Bohr magnetons. Within this work precisely this ferromagnetic structure has been investigated in detail and it could be shown that the relatively weak magnetic moment does not result from frustration, but is a consequence of the strong hybridization effects between the cobalt and oxygen orbitals. The pronounced covalent character of this Co ion leads to the fact that due to the charge transfer the oxygen ions significantly contribute to the bulk magnetization when applying an external magnetic field. The second part of the presented work deals with the systematic investigation of the mixed system (Co{sub x}Ni{sub 1-x})3V{sub 2}O{sub 8}. A detailed magnetic phase diagram could be drawn, in which the temperature and composition dependent magnetic phase transitions have been pinpointed. Furthermore, an interesting magnetic structure of a chosen composition of x=0.5 has been observed, which differs considerably from those of the end members. (orig.)

  7. Experiments on multi-nucleon transfer reactions with the systems {sup 58,64}Ni+{sup 207}Pb at SHIP

    Energy Technology Data Exchange (ETDEWEB)

    Fernandovich Comas Lijachev, Victor

    2012-07-01

    This work presents experimental results on multi-nucleon transfer reactions in the collision systems {sup 58}Ni+{sup 207}Pb and {sup 64}Ni+{sup 207}Pb which were measured at the velocity filter SHIP at GSI. The reactions were performed at beam energies below and up to 10% above the Coulomb barrier. The work was motivated by theoretical predictions to apply multi-nucleon transfer reactions in heavy systems to synthesize new neutron-rich isotopes in the region of superheavy nuclei with Z>100 and in the region of the closed neutron shell N=126. The expected cross-sections for the production of these nuclei in transfer reactions are small and reach typically nanobarn and below. Therefore, efficient separation techniques have to be applied and the detection system must allow for the identification of single nuclei. A dedicated experimental setup to study such rare transfer products does not exist presently. But already existing facilities which are used for the synthesis of superheavy fusion products meet the requirements for the detection of rare reaction products. In this context, the velocity filter SHIP offers the possibility to separate heavy target-like transfer products from projectiles and projectile-like reaction products before they reach the detection system where the particles are identified by their alpha-decay properties. At SHIP, a cross-section limit of 10 pb can be reached at usual beam intensities. In the present work on collisions of {sup 58,64}Ni+{sup 207}Pb the influence of the projectile neutron number on the cross-sections, isotopic distributions and excitation energies of the transfer products was studied. Especially with the more neutron-rich {sup 64}Ni projectiles a transfer of up to seven protons and eight neutrons to the target nucleus was observed. The largest cross-sections for the most neutron-rich isotopes were reached at the beam energies around the Coulomb barrier. The transfer was accompanied by the full dissipation of the available

  8. In situ synthesis of TiB2-TiC particulates locally reinforced medium carbon steel-matrix composites via the SHS reaction of Ni-Ti-B4C system during casting

    International Nuclear Information System (INIS)

    Wang, H.Y.; Huang, L.; Jiang, Q.C.

    2005-01-01

    The fabrication of medium carbon steel-matrix composites locally reinforced with in situ TiB 2 -TiC particulates using self-propagating high-temperature synthesis (SHS) reaction of Ni-Ti-B 4 C system during casting was investigated. X-ray diffraction (XRD) results reveal that the exotherm of 1042 deg. C initiated by heat release of the solid state reaction in the differential thermal analysis (DTA) curve is an incomplete reaction in Ni-Ti-B 4 C system. As-cast microstructures of the in situ processed composites reveal a relatively uniform distribution of TiB 2 -TiC particulates in the locally reinforced regions. Furthermore, the particulate size and micro-porosity in the locally reinforced regions are significantly decreased with the increasing of the Ni content in the preforms. For a Ni content of 30 and 40 wt.%, near fully dense composites locally reinforced with in situ TiB 2 and TiC particulates can be fabricated. Although most of fine TiB 2 and TiC particulates which form by the reaction-precipitation mechanism during SHS reaction are present in the locally reinforced region, some large particulates which form by the nucleation-growth mechanism during solidification are entrapped inside the Fe-rich region located in the reinforcing region or inside the matrix region nearby the interface between matrix and reinforcing region. The hardness of the reinforcing region in the composite is significantly higher than that of the unreinforced medium carbon steel. Furthermore, the hardness values of the composites synthesized from 30 to 40 wt.% Ni-Ti-B 4 C systems are higher than those of the composites synthesized from 10 to 20 wt.% Ni-Ti-B 4 C systems

  9. Anomalous decrease in X-ray diffraction intensities of Cu-Ni-Al-Co-Cr-Fe-Si alloy systems with multi-principal elements

    International Nuclear Information System (INIS)

    Yeh, J.-W.; Chang, S.-Y.; Hong, Y.-D.; Chen, S.-K.; Lin, S.-J.

    2007-01-01

    With an aim to understand the great reduction in the X-ray diffraction (XRD) intensities of high-entropy alloys, a series of Cu-Ni-Al-Co-Cr-Fe-Si alloys with systematic addition of principal elements from pure element to seven elements was investigated for quantitative analysis of XRD intensities. The variation of XRD peak intensities of the alloy system is similar to that caused by thermal effect, but the intensities further drop beyond the thermal effect with increasing number of incorporated principal elements. An intrinsic lattice distortion effect caused by the addition of multi-principal elements with different atomic sizes is expected for the anomalous decrease in XRD intensities. The mathematical factor of this distortion effect for the modification of XRD structure factor is formulated analogue to that of thermal effect

  10. Spectroscopic investigation of Ni speciation in hardened cement paste.

    Science.gov (United States)

    Vespa, M; Dähn, R; Grolimund, D; Wieland, E; Scheidegger, A M

    2006-04-01

    Cement-based materials play an important role in multi-barrier concepts developed worldwide for the safe disposal of hazardous and radioactive wastes. Cement is used to condition and stabilize the waste materials and to construct the engineered barrier systems (container, backfill, and liner materials) of repositories for radioactive waste. In this study, Ni uptake by hardened cement paste has been investigated with the aim of improving our understanding of the immobilization process of heavy metals in cement on the molecular level. X-ray absorption spectroscopy (XAS) coupled with diffuse reflectance spectroscopy (DRS) techniques were used to determine the local environment of Ni in cement systems. The Ni-doped samples were prepared at two different water/cement ratios (0.4, 1.3) and different hydration times (1 hour to 1 year) using a sulfate-resisting Portland cement. The metal loadings and the metal salts added to the system were varied (50 up to 5000 mg/kg; NO3(-), SO4(2-), Cl-). The XAS study showed that for all investigated systems Ni(ll) is predominantly immobilized in a layered double hydroxide (LDH) phase, which was corroborated by DRS measurements. Only a minor extent of Ni(ll) precipitates as Ni-hydroxides (alpha-Ni(OH)2 and beta-Ni(OH)2). This finding suggests that Ni-Al LDH, rather than Ni-hydroxides, is the solubility-limiting phase in the Ni-doped cement system.

  11. Fe-solubility of Ni7S6 and Ni9S8: Thermodynamic analysis

    International Nuclear Information System (INIS)

    Waldner, P.

    2011-01-01

    Experimental data on phase equilibria have been used for thermodynamic analysis of the iron solubility of the nickel sulfides Ni 7 S 6 and Ni 9 S 8 . For both compounds, a two-sublattice approach within the framework of the compound energy formalism has been applied to perform Gibbs free energy modelling at 0.1 MPa total pressure consistently embedded in recent thermodynamic assessment studies of other iron-nickel-sulfides. The predicted maxima of iron solubility around 3 at% of Ni 7 S 6 and 5.5 at% of Ni 9 S 8 are confirmed by experimental data. The calculations of complex ternary phase relations with Fe-bearing Ni 7 S 6 and Ni 9 S 8 gain further improvement. The first internally consistent description of all thermodynamically stable phases known in the literature for the iron-nickel-sulfur system is completed.

  12. Morphological control of Ni/NiO core/shell nanoparticles and production of hollow NiO nanostructures

    International Nuclear Information System (INIS)

    Chopra, Nitin; Claypoole, Leslie; Bachas, Leonidas G.

    2010-01-01

    Chemical synthesis coupled with a microwave irradiation process allowed for the control of size (6-40 nm), shape, and shell thickness of Ni/NiO core/shell nanoparticles. In this unique synthetic route, the size of Ni nanoparticles (NiNPs) was strongly influenced by the nickel salt-to-stabilizer ratio and the amount of the stabilizer. Interestingly, it was observed that the shape of the nanoparticles was altered by varying the reaction time, where longer reaction times resulted in annealing effects and rupture of the stabilizer micelle leading to distinct shapes of Ni/NiO core/shell nanostructures. Product cooling rate was another important parameter identified in this study that not only affected the shape, but also the crystal structure of the core/shell nanoparticles. In addition, a simple and cost-effective method of microwave irradiation of NiNPs led to the formation of distinctly shaped hollow NiO nanoparticles. These high surface area core/shell nanoparticles with well-controlled morphologies are important and can lead to significant advancement in the design of improved fuel cells, electrochromic display devices, and catalysis systems.

  13. Morphological control of Ni/NiO core/shell nanoparticles and production of hollow NiO nanostructures

    Energy Technology Data Exchange (ETDEWEB)

    Chopra, Nitin [University of Alabama, Department of Metallurgical and Materials Engineering, Center for Materials for Information Technology (MINT) (United States); Claypoole, Leslie [Fairmont State University (United States); Bachas, Leonidas G., E-mail: bachas@uky.ed [University of Kentucky, Department of Chemistry (United States)

    2010-10-15

    Chemical synthesis coupled with a microwave irradiation process allowed for the control of size (6-40 nm), shape, and shell thickness of Ni/NiO core/shell nanoparticles. In this unique synthetic route, the size of Ni nanoparticles (NiNPs) was strongly influenced by the nickel salt-to-stabilizer ratio and the amount of the stabilizer. Interestingly, it was observed that the shape of the nanoparticles was altered by varying the reaction time, where longer reaction times resulted in annealing effects and rupture of the stabilizer micelle leading to distinct shapes of Ni/NiO core/shell nanostructures. Product cooling rate was another important parameter identified in this study that not only affected the shape, but also the crystal structure of the core/shell nanoparticles. In addition, a simple and cost-effective method of microwave irradiation of NiNPs led to the formation of distinctly shaped hollow NiO nanoparticles. These high surface area core/shell nanoparticles with well-controlled morphologies are important and can lead to significant advancement in the design of improved fuel cells, electrochromic display devices, and catalysis systems.

  14. Large Scale DD Simulation Results for Crystal Plasticity Parameters in Fe-Cr And Fe-Ni Systems

    Energy Technology Data Exchange (ETDEWEB)

    Zbib, Hussein M.; Li, Dongsheng; Sun, Xin; Khaleel, Mohammad A.

    2012-04-30

    The development of viable nuclear energy source depends on ensuring structural materials integrity. Structural materials in nuclear reactors will operate in harsh radiation conditions coupled with high level hydrogen and helium production, as well as formation of high density of point defects and defect clusters, and thus will experience severe degradation of mechanical properties. Therefore, the main objective of this work is to develop a capability that predicts aging behavior and in-service lifetime of nuclear reactor components and, thus provide an instrumental tool for tailoring materials design and development for application in future nuclear reactor technologies. Towards this end goal, the long term effort is to develop a physically based multiscale modeling hierarchy, validated and verified, to address outstanding questions regarding the effects of irradiation on materials microstructure and mechanical properties during extended service in the fission and fusion environments. The focus of the current investigation is on modern steels for use in nuclear reactors including high strength ferritic-martensitic steels (Fe-Cr-Ni alloys). The effort is to develop a predicative capability for the influence of irradiation on mechanical behavior. Irradiation hardening is related to structural information crossing different length scales, such as composition, dislocation, and crystal orientation distribution. To predict effective hardening, the influence factors along different length scales should be considered. Therefore, a hierarchical upscaling methodology is implemented in this work in which relevant information is passed between models at three scales, namely, from molecular dynamics to dislocation dynamics to dislocation-based crystal plasticity. The molecular dynamics (MD) was used to predict the dislocation mobility in body centered cubic (bcc) Fe and its Ni and Cr alloys. The results are then passed on to dislocation dynamics to predict the critical resolved

  15. Thermal and x-ray crystallographic features of the binary system UO2(NO3)2.6H2O-Ni(NO3)2.6H2O at elevated temperatures

    International Nuclear Information System (INIS)

    Kalekar, B.B.; Rajagopalan, K.V.; Ravindran, P.V.

    2007-01-01

    Solid state reaction between uranyl nitrate hexahydrate and nickel nitrate hexahydrate of different compositions has been studied at higher temperatures. The binary system containing uranyl nitrate hexahydrate (UNH) and nickel nitrate hexahydrate is found to form eutectic corresponding to 53 mol% of uranyl nitrate hexahydrate at 40 degC. The overlap of evolution of nitric oxide and water vapour above 230 degC confirmed the presence of hydroxynitrates of uranium and nickel. Both the nitrates decomposed independently. NiO formed by the decomposition of nickel nitrate hexahydrate reacted with UO 3 formed by the initial decomposition of uranyl nitrate hexahydrate to form a double oxide, NiU 3 O 10 , in the case of mixtures containing 70 mol% uranyl nitrate hexahydrate. The compositions richer than 70 mol% in uranyl nitrate hexahydrate formed U 3 O 8 along with nickel uranate. With mixtures leaner in uranyl nitrate hexahydrate, NiO was observed along with NiU 3 O 10 and, further, the formation of NiU 3 O 10 was completed at a lower temperature. (author)

  16. Iron alloy Fischer-tropsch catalysts--1. Oxidation-reduction studies of the Fe-Ni system

    Energy Technology Data Exchange (ETDEWEB)

    Unmuth, E.E.; Schwartz, L.H.; Butt, J.B.

    1980-01-01

    Catalysts containing 5% iron, nickel, or 4:1 iron-nickel on silica were hydrogen-reduced at 425/sup 0/C for 12 or 24 hr, reoxidized in air for 2 or 4 hr, reduced again in hydrogen for 12 hr, and studied at each treatment step by Moessbauer spectroscopy, X-ray diffraction, and temperature-programed desorption. The nickel was reduced directly to the metal, redispersed during the oxidation, and gave 20% smaller particles in the second reduction than in the first reduction. The ..cap alpha..-Fe/sub 2/O/sub 3/ reduced via an Fe/sub 3/O/sub 4/ intermediate and yielded approx. 70% metallic iron and the second reduction produced about the same particle size as the first reduction. The alloy catalyst reduced into a mixture of two phases, a face-centered cubic phase containing approx. 37.5% Ni, i.e., the bulk equilibrium value, and a body-centered cubic phase, and the particle sizes obtained in the first and second reductions were similar. The activation energies for the reduction were determined.

  17. Comparison of working length control consistency between hand K-files and Mtwo NiTi rotary system.

    Science.gov (United States)

    Krajczár, Károly; Varga, Enikő; Marada, Gyula; Jeges, Sára; Tóth, Vilmos

    2016-04-01

    The purpose of this study was to investigate the consistency of working length control between hand instrumentation in comparison to engine driven Mtwo nickel-titanium rotary files. Forty extracted maxillary molars were selected and divided onto two parallel groups. The working lengths of the mesiobuccal root canals were estimated. The teeth were fixed in a phantom head. The root canal preparation was carried out group 1 (n=20) with hand K-files, (VDW, Munich, Germany) and group 2 (n=20) with Mtwo instruments (VDW, Munich, Germany). Vestibulo-oral and mesio-distal directional x-ray images were taken before the preparation with #10 K-file, inserted into the mesiobuccal root canal to the working length, and after preparation with #25, #30 and #40 files. Working lenght changes were detected with measurements between the radiological apex and the instrument tips. In the Mtwo group a difference in the working competency (protary files. Mtwo NiTi rotary file did therefore proved to be more accurate in comparison to the conventional hand instrumentation. Working length, Mtwo, nickel-titanium, hand preparation, engine driven preparation.

  18. Influence of magnetic field, chemical pressure and hydrostatic pressure on the structural and magnetocaloric properties of the Mn-Ni-Ge system

    Science.gov (United States)

    Taubel, Andreas; Gottschall, Tino; Fries, Maximilian; Faske, Tom; Skokov, Konstantin P.; Gutfleisch, Oliver

    2017-11-01

    The magnetic, structural and thermomagnetic properties of the MM’X material system of MnNiGe are evaluated with respect to their utilization in magnetocaloric refrigeration. The effects of separate and simultaneous substitution of Fe for Mn and Si on the Ge site are analysed in detail to highlight the benefits of the isostructural alloying method. A large range of compounds with precisely tunable structural and magnetic properties and the tuning of the phase transition by chemical pressure are compared to the effect of hydrostatic pressure on the martensitic transition. We obtained very large isothermal entropy changes Δ S_iso of up to -37.8 J kg-1 K-1 based on magnetic measurements for (Mn,Fe)NiGe in moderate fields of 2 T. The enhanced magnetocaloric properties for transitions around room temperature are demonstrated for samples with reduced Ge, a resource critical element. An adiabatic temperature change of 1.3 K in a magnetic field change of 1.93 T is observed upon direct measurement for a sample with Fe and Si substitution. However, the high volume change of 2.8% results in an embrittlement of large particles into several smaller fragments and leads to a sensitivity of the magnetocaloric properties towards sample shape and size. On the other hand, this large volume change enables to induce the phase transition with a large shift of the transition temperature by application of hydrostatic pressure (72 K GPa-1 ). Thus, the effect of 1.88 GPa is equivalent to a substitution of 10% Fe for Mn and can act as an additional stimulus to induce the phase transition and support the low magnetic field dependence of the phase transition temperature for multicaloric applications.

  19. Oxidation behaviour at 1123 K of AISI 304-Ni/Al-Al2O3/TiO2 multilayer system deposited by flame spray

    Directory of Open Access Journals (Sweden)

    Cervera, I.

    2011-04-01

    Full Text Available The oxidation behaviour of alumina/titania (97/3, 87/13 and 60/40 ceramic coatings using a Ni-Al coupling layer was studied in a thermobalance. Both layers were deposited on an AISI 304 stainless steel base metal by the flame spray technique. The coated steel was heated from room temperature to 1,123 K at 40 K min –1, oxidized in air for 50 h, and then cooled to room temperature at 40 K min–1. The mass gain was mainly attributed to the oxidation of Ni-Al coupling layer. Kinetic laws, DW·S –1 (mg.mm–2 vs. time (hours were close to a parabolic plot for each sample. Surface composition of ceramic top layer and the cross section of multilayer system were analysed using a wide range of experimental techniques including Scanning Electron Microscopy (SEM, equipped with a link energy dispersive X-Ray spectroscopy (EDX and X-Ray diffraction (XRD before and after the oxidation process. Coatings 97/3 and 87/13 presented a stable structure after flame spray deposition and they did not evolve with the oxidation process, while most of the 60/40 coating changed to a metastable structure after deposition and to a more stable structure after oxidation with high micro-cracks content. SEM and EDX microanalysis of the cross-sections showed that significant oxidation and a weak intergranular precipitation had been produced in the coupling layer and on the stainless steel base metal, respectively.El comportamiento a oxidación de recubrimientos cerámicos alúmina/titania (97/3, 87/13, 60/40 usando una capa de anclaje Ni-Al se ha estudiado mediante una termobalanza. Ambas capas se han depositado sobre un acero inoxidable AISI 304 utilizando la técnica de proyección llama (FS. El acero recubierto se ha calentado desde la temperatura ambiente hasta 1.123 K a 40 K min–1, se ha oxidado al aire durante 50 h, y luego se ha enfriado hasta la temperatura ambiente a 40 K min–1. La ganancia en masa se atribuye a la oxidación de la capa de enganche Ni-Al. La cin

  20. Solid-state reactions during mechanical alloying of ternary Fe-Al-X (X=Ni, Mn, Cu, Ti, Cr, B, Si) systems: A review

    Science.gov (United States)

    Hadef, Fatma

    2016-12-01

    The last decade has witnessed an intensive research in the field of nanocrystalline materials due to their enhanced properties. A lot of processing techniques were developed in order to synthesis these novel materials, among them mechanical alloying or high-energy ball milling. In fact, mechanical alloying is one of the most common operations in the processing of solids. It can be used to quickly and easily synthesize a variety of technologically useful materials which are very difficult to manufacture by other techniques. One advantage of MA over many other techniques is that is a solid state technique and consequently problems associated with melting and solidification are bypassed. Special attention is being paid to the synthesis of alloys through reactions mainly occurring in solid state in many metallic ternary Fe-Al-X systems, in order to improve mainly Fe-Al structural and mechanical properties. The results show that nanocrystallization is the common result occurring in all systems during MA process. The aim of this work is to illustrate the uniqueness of MA process to induce phase transformation in metallic Fe-Al-X (X=Ni, Mn, Cu, Ti, Cr, B, Si) systems.

  1. Solid-state reactions during mechanical alloying of ternary Fe–Al–X (X=Ni, Mn, Cu, Ti, Cr, B, Si) systems: A review

    Energy Technology Data Exchange (ETDEWEB)

    Hadef, Fatma, E-mail: hadef77@yahoo.fr [Laboratoire de Recherche sur la Physico-Chimie des Surfaces et Interfaces, LRPCSI, Université 20 Août 1955, BP 26, Route d’El-Haddaiek, Skikda 21000 (Algeria); Département de Physique, Faculté des Sciences, Université 20 Août 1955, BP 26, Route d’El-Haddaiek, Skikda 21000 (Algeria)

    2016-12-01

    The last decade has witnessed an intensive research in the field of nanocrystalline materials due to their enhanced properties. A lot of processing techniques were developed in order to synthesis these novel materials, among them mechanical alloying or high-energy ball milling. In fact, mechanical alloying is one of the most common operations in the processing of solids. It can be used to quickly and easily synthesize a variety of technologically useful materials which are very difficult to manufacture by other techniques. One advantage of MA over many other techniques is that is a solid state technique and consequently problems associated with melting and solidification are bypassed. Special attention is being paid to the synthesis of alloys through reactions mainly occurring in solid state in many metallic ternary Fe–Al–X systems, in order to improve mainly Fe–Al structural and mechanical properties. The results show that nanocrystallization is the common result occurring in all systems during MA process. The aim of this work is to illustrate the uniqueness of MA process to induce phase transformation in metallic Fe–Al–X (X=Ni, Mn, Cu, Ti, Cr, B, Si) systems. - Highlights: • A review of state of the art on binary Fe–Al alloys was presented. • Structural and microstructural properties of MA ternary Fe–Al–X alloys were summerized. • MA process is a powerful tool for producing metallic alloys at the nanometer scale.

  2. FY1995 dynamically up-gradable machine based on right quality control and its life cycle support; 1995 nendo tekisei hinshitsu seigyo ni motozuku doteki seicho kikai to sono lifecycle shien

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    A method for determining part re-use and recycling strategy in product design is considered for optimal design of total product life cycle based on the concept of Right Quality Products. For this purpose, it is important to be able to estimate part deterioration status under various product usage conditions. For supporting product designers' decision making about the product life cycle in preliminary design phase, the deterioration estimation is not required to be very exact, but to generate every possible deterioration modes qualitatively. Then, based on these deterioration modes, functional behaviour of target products is simulated, and possible product failure modes can be generated. By utilizing the FMEA (Failure Mode and Effect Analysis) method, the effects of failure modes are evaluated, and the results are fed back to product designers for confirming their design in terms of total product life cycle optimization. A basic methodology is considered, and case study has been done for a mechanical assembly of a one-time use camera. The assembly consists of injection molded parts. Various CAE methods have been used for predicting possible part failures due to initial residual stress, warp, fatigue, creep, and wear. Then kinematic and dynamic analysis of mechanical assembly has been done for detecting the effect of part deterioration on mechanism movements. Several critical failure modes have been detected, and the effects of those failures have been checked by the FMEA method. (NEDO)

  3. Report on investigation in fiscal 2000 of actual status of technological cooperation in foreign market entry supporting organizations in fiscal 2000; 2000 nendo kaigai shinshutsu shien kikan ni okeru gijutsu renkei jittai chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    With an objective to help improve the business creation supporting environment in Japan, investigations were performed on cases of advanced business creation supporting infrastructures, centering on the United States. The activity results were put into order in the following six fields: 1) creator support and incubators in the United States, 2) the current status of incubators in the United States, 3) support on creation by universities and research institutions, 4) advantages of industry-academia cooperation on creation support, 5) international cooperation in the state of Pennsylvania with other countries, and 6) conclusion. In Item 6), the evolution of the incubator concept in the United States, roles of incubators in areas in which general business creation infrastructures have matured, creator support by universities and education organizations, and matters expected on incubators were summarized. Based on the summarisation, four items were proposed, including structuring of the Japanese type business creation infrastructures to structure a fusion and circulation model for the Japanese type business creation support and economic development, and district economy development under the initiative of business communities. (NEDO)

  4. FY1995 dynamically up-gradable machine based on right quality control and its life cycle support; 1995 nendo tekisei hinshitsu seigyo ni motozuku doteki seicho kikai to sono lifecycle shien

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    A method for determining part re-use and recycling strategy in product design is considered for optimal design of total product life cycle based on the concept of Right Quality Products. For this purpose, it is important to be able to estimate part deterioration status under various product usage conditions. For supporting product designers' decision making about the product life cycle in preliminary design phase, the deterioration estimation is not required to be very exact, but to generate every possible deterioration modes qualitatively. Then, based on these deterioration modes, functional behaviour of target products is simulated, and possible product failure modes can be generated. By utilizing the FMEA (Failure Mode and Effect Analysis) method, the effects of failure modes are evaluated, and the results are fed back to product designers for confirming their design in terms of total product life cycle optimization. A basic methodology is considered, and case study has been done for a mechanical assembly of a one-time use camera. The assembly consists of injection molded parts. Various CAE methods have been used for predicting possible part failures due to initial residual stress, warp, fatigue, creep, and wear. Then kinematic and dynamic analysis of mechanical assembly has been done for detecting the effect of part deterioration on mechanism movements. Several critical failure modes have been detected, and the effects of those failures have been checked by the FMEA method. (NEDO)

  5. Neutron enrichment at midrapidity in 58Ni + 58Ni at 52 MeV/u

    International Nuclear Information System (INIS)

    Theriault, D.; Vallee, A.; Gingras, L.; Larochelle, Y.; Roy, R.; April, A.; Beaulieu, L.; Grenier, F.; Lemieux, F.; Moisan, J.; Samri, M.; Saint-Pierre, C.; Turbide, S.; Yennello, S.J.; Martin, E.; Winchester, E.

    2003-01-01

    By combining data from a charged particle 58 Ni + 58 Ni experiment at 52 MeV/u with an 36 Ar + 58 Ni experiment at 50 MeV/u for which free neutrons have been detected, an increase in the neutron to proton ratio of the whole nuclear material at midrapidity has been experimentally observed in the reaction 58 Ni + 58 Ni at 52 MeV/u. The neutron to proton ratio is measured above the initial neutron to proton ratio of the system. Neutron to proton ratio of the quasi-projectile emission is analysed for the same reactions and is seen to decrease below the ratio of the initial system. (authors)

  6. Phase relations in the pseudo ternary system In2O3-TiO2-BO (B: Zn, Co and Ni) at 1200 °C in air

    Science.gov (United States)

    Brown, Francisco; Jacobo-Herrera, Ivan Edmundo; Alvarez-Montaño, Victor Emmanuel; Kimizuka, Noboru; Hirano, Tomonosuke; Sekine, Ryotaro; Denholme, Saleem J.; Miyakawa, Nobuaki; Kudo, Akihiko; Iwase, Akihide; Michiue, Yuichi

    2018-02-01

    Phase relations in the pseudo ternary systems In2O3-TiO2-ZnO, In2O3-TiO2-CoO and In2O3-TiO2-NiO at 1200 °C in air were determined by means of a classic quenching method. In6Ti6BO22 (B: Zn, Co and Ni) which has the monoclinic In(Fe1/4Ti3/4)O27/8-type of structure with a 4-dimensional super space group exists in a stable form. There exist homologous phases In1+x(Ti1/2Zn1/2)1-xO3(ZnO)m (m: natural number, 0ternary system In2O3-TiO2-ZnO. All the ions are on the trigonal lattice points, the In(III) is in the octahedral coordination with the oxygen and the {Inx(Ti1/2Zn1/2)1-xZnm} is in the trigonalbipyramidal coordination with oxygen in the crystal structures of each homologous compound. They have R 3 bar m (No. 166) for m = odd or P63/mmc (No. 194) for m = even in space group. Lattice constants for each of the homologous compounds as a hexagonal setting and In6Ti6BO22 as the monoclinic system were determined by means of the powder X-ray diffraction method at room temperature. The temperature dependence of resistivity for In1+x(Ti1/2Zn1/2)1-x(ZnO)4 (0.15 ≤ x ≤ 1) showed semiconducting-like behavior for all samples examined at T(K) = 2-300. The resistivity increased systematically with decreasing x (0.7 ≤ x ≤ 1), and it was found that samples where x ≤ 0.7 became insulators. The optical band gap Eg (eV) of In1+x(Ti1/2Zn1/2)1-x(ZnO)4 has been estimated from the diffuse reflection spectra for the whole range of x (0.15 ≤ x ≤ 1). A minimum value of 2.0717 eV for x = 1 and a maximum one of 3.066 eV for x = 0.15 were observed. Dependence of the crystal structures of the InAO3(BO), In(Ti1/2B1/2)O3(B‧O) and stability of In6Ti6BO22 upon the constituent cations in the pseudo quaternary system In2O3-TiO2-A2O3-BO (A: Fe, Ga and Cr; B, B‧: Mg, Zn, Co, Ni, Ca and Sr) were discussed in terms of their ionic radii and site preference effects.

  7. Economical effect of introducing a photovoltaic system on future electric power system; Shorai no denryoku keito eno taiyoko hatsuden system donyu ni yoru keizaiteki eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Akata, N.; Kenmoku, Y.; Sakakibara, T. [Toyohashi University of Technology, Aichi (Japan); Kawamoto, T. [Shizuoka University, Shizuoka (Japan); Nakagawa, S. [Maizuru National College of Technology, Kyoto (Japan)

    1997-11-25

    Economic impact of introduction in the future of photovoltaic power generation (PV) systems into the commercial power system is discussed from the electric utilities` point of view. In the discussion, future demand for power is predicted from the demand for power in the base year, and the optimum power source configuration corresponding to the future demand and power generation curve are worked out by use of linear programming. Then, the fixed cost and variable cost are calculated for each of the power source components, and then the expected reduction in cost per unit of power generated is calculated. As the power sources, the hydroelectric, pumped storage, oil-fired, coal-fired, LNG-fired, combined cycle, and atomic technologies are considered. The conclusion is stated below. Upon introduction of PV power equivalent to 10% of the maximum demand power, the maximum power in the service area of Chubu Electric Power Co., Inc., will be reduced by 1.23GW in 2025, and the yearly demand power by 5472GWh. Since PV lowers the peak, an increased number of power sources low in variable cost will be used although such will be low in tracking capability. An increase in power demand will enhance the cost reducing effect of the PV system. 5 refs., 4 figs., 3 tabs.

  8. Study of substitution in the systems UNi5sub(-)sub(x)Msub(x) and ZrNi5sub(-)sub(x)Msub(x) (M = In, Sn, Zn)

    International Nuclear Information System (INIS)

    Blazina, Z.; Drasner, A.; Ban, Z.; Zagreb Univ.

    1981-01-01

    X-ray powder diffraction studies and metallographic examinations in the systems UNi 5 sub(-)sub(x)Msub(x) and ZrNi 5 sub(-)sub(x)Msub(x) (M = In, Sn, Zn) revealed the existence of single phase regions up to the composition 1 : 4 : 1, i.e. up to UNi 4 M and ZrNi 4 M, respectively. Comparison between calculated and observed intensity values showed that nickel atoms, in the crystallographic positions 4(c) of the isostructural binary compounds UNi 5 or ZrNi 5 (UNi 5 -type, S.G. F43m), are substituted by M atoms. Vegard's rule is obeyed in the single phase regions of all investigated systems. The crystal structures of UNi 4 M and ZrNi 4 M are superlattice structures of the MgSnCu 4 -type (S.G. F43m). Structural correlations of these phases with corresponding binary prototypes are made in terms of stacking sequences. (orig.)

  9. Hard x-ray photoemission study of the temperature-induced valence transition system EuNi2(Si1-xGex) 2

    Science.gov (United States)

    Ichiki, Katsuya; Mimura, Kojiro; Anzai, Hiroaki; Uozumi, Takayuki; Sato, Hitoshi; Utsumi, Yuki; Ueda, Shigenori; Mitsuda, Akihiro; Wada, Hirofumi; Taguchi, Yukihiro; Shimada, Kenya; Namatame, Hirofumi; Taniguchi, Masaki

    2017-07-01

    We investigated the bulk-derived electronic structure of the temperature-induced valence transition system EuNi2(Si1 -xGex )2 (x =0.70 , 0.79, and 0.82) by means of hard x-ray photoemission spectroscopy (HAXPES). The HAXPES spectra clearly show distinct temperature dependencies in the spectral intensities of the Eu2 + and Eu3 +3 d components. For x =0.70 , the changes in the Eu2 + and Eu3 +3 d spectral components with temperature reflect a continuous valence transition, whereas the sudden changes for x =0.79 and 0.82 reflect first-order valence transitions. The Eu 3 d spectral shapes for all x and particularly the drastic changes in the Eu3 +3 d feature with temperature are validated by a theoretical calculation based on the single-impurity Anderson model (SIAM). SIAM analysis reveals that the valence transition for each x is controlled by the c -f hybridization strength and the charge-transfer energy. Furthermore, the c -f hybridization strength governs the valence transition of this system, which is either first order or continuous, consistent with Kondo volume collapse.

  10. Influence of the alloying effect on nickel K-shell fluorescence yield in Ni Si alloys

    Science.gov (United States)

    Kalayci, Y.; Agus, Y.; Ozgur, S.; Efe, N.; Zararsiz, A.; Arikan, P.; Mutlu, R. H.

    2005-02-01

    Alloying effects on the K-shell fluorescence yield ωK of nickel in Ni-Si binary alloy system have been studied by energy dispersive X-ray fluorescence. It is found that ωK increases from pure Ni to Ni 2Si and then decreases from Ni 2Si to NiSi. These results are discussed in terms of d-occupation number on the Ni site and it is concluded that electronic configuration as a result of p-d hybridization explain qualitatively the observed variation of ωK in Ni-Si alloys.

  11. In situ NiTi/Nb(Ti) composite

    International Nuclear Information System (INIS)

    Jiang, Daqiang; Cui, Lishan; Jiang, Jiang; Zheng, Yanjun

    2013-01-01

    Graphical abstract: - Highlights: • In situ NiTi/Nb(Ti) composites were fabricated. • The transformation temperature was affected by the mixing Ti:Ni atomic ratios. • The NiTi component became micron-scale lamella after forging and rolling. • The composite exhibited high strength and high damping capacity. - Abstract: This paper reports on the creation of a series of in situ NiTi/Nb(Ti) composites with controllable transformation temperatures based on the pseudo-binary hypereutectic transformation of NiTi–Nb system. The composite constituent morphology was controlled by forging and rolling. It is found that the thickness of the NiTi lamella in the composite reached micron level after the hot-forging and cold-rolling. The NiTi/Nb(Ti) composite exhibited high damping capacity as well as high yield strength

  12. Annual cycle solar energy utilization with seasonal storage. Part 8. Study on periodic steady state of the annual cycle energy system at a practical operation; Kisetsukan chikunetsu ni yoru nenkan cycle taiyo energy riyo system ni kansuru kenkyu. 8

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, H; Okumiya, M [Nagoya University, Nagoya (Japan)

    1997-11-25

    A study was made of the periodic steady state of the annual cycle solar energy system with seasonal heat storage at a practical operation. Cold heat in winter and warm heat in summer are stored in the seasonal storage tank, and these are each used in shift until when demand for cold/warm heat appears. Moreover, gap in quantity of cold/warm heat going in/out of the heat storage tank during a year is filled by natural energy such as solar energy, so that the system can be operated in annual cycles. Studies were conducted of the periodic unsteady term and the problem on lowering of performance during the term such as the periodic unsteady term of water temperature inside the seasonal heat storage tank and temperature of the soil around the storage tank, and the level of lowering of performance during the term, necessity of additional operation/control at the start of operation and aged deterioration of the system. Within the assumption, even if starting operation in any time of the year, the system could show the performance almost expected from the first operation year with no additional system operation and control required only at the start of operation. It is thought that the heat source selection control of heat pump largely contributes to this. 4 refs., 5 figs., 3 tabs.

  13. Study of the central collisions in the reactions Ni + Al and Ni + Ni at 28 A.MeV; Etude des collisions centrales dans les reactions Ni + Al et Ni + Ni a 28 A.MeV

    Energy Technology Data Exchange (ETDEWEB)

    Lebreton, L.

    1995-12-01

    The work is in characterisation of mechanisms in the energy range of onset of multifragmentation (excitation energy of composed nucleus around 4 - 5 AMeV). This work focused on an experiment performed at the SARA facility, in Grenoble, using the AMPHORA multi detection array. I have been particularly interested in central collisions in the Ni + Al and Ni + Ni systems. The possibility to detect complete events for Ni + Al, and quasi-complete events for the Ni + Ni case, is the reason of this choice. Furthermore Ni + Ni presents the interest of a symmetrical system, for which the excitation energy per nucleon is maximum. The study of these reactions has been focused on the quasi-complete events (events for which at least 80 % of the total charge has been detected). Heavy ions produced in peripheral collisions are very likely emitted along the beam line or stopped in the plastic detectors, energy thresholds are too high for the quasi-target products detection, consequently by requiring complete or quasi-complete measurement of the total charge, we are able to detect mostly central events. The knowledge of informations like charge, energy or detection angles allows to isolate the source(s) and to reconstruct the size and the excitation energy of the source(s). Comparisons with simulations like sequential emission (GEMINI code), very deep inelastic collision or instantaneous emission (Berliner code) allows to characterise the first stage of the collision (binary collisions or central collisions) and the type of deexcitation of the source(s). Some calculations was also performed with the statistical model code MODGAN. Indeed azimuthal correlations seem to be a good tool in getting more information about involved reaction mechanisms. Comparisons with MODGAN provide information about angular momentum of the source and time delay between emissions of the two particles (separation between sequential or instantaneous process). (author). 69 refs.

  14. The Effect of Ar/O2 Ratio on Electrochromic Response Time of Ni Oxides Grown Using an RF Sputtering System

    Science.gov (United States)

    Ahn, Kwang-Soon; Nah, Yoon-Chae; Yum, Jun-Ho; Sung, Yung-Eun

    2002-02-01

    The effect of Ar:O2 ratio on the electrochromic properties and the response time of NiO grown by RF sputtering were investigated by in situ transmittance measurements with continuous potential cycling and pulse potential cycling. The transmittance difference, coloration efficiency, memory effect, and cycling stability were all found to be independent of the Ar:O2 ratio. However, the transmittance of the as-deposited NiO as well as the response time were significantly affected. This may be attributed to the excess of oxygen occupied interstitial sites in the sputtered NiO that could result in the generation of Ni3+ ions and interference with proton intercalation/deintercalation.

  15. The effect of small 4th element alloying additions on the calculated phase stability in the Fe-Cr-Ni system

    International Nuclear Information System (INIS)

    Watkin, J.S.

    1979-01-01

    Recent studies into the void swelling of Fe-Cr-Ni alloys have revealed that the magnitude of swelling depends upon alloy constitution and this together with the fact that minor element additions also play a major role in swelling necessitate a detailed knowledge of the influence of small 4th element additions on phase stability. In this paper the effects of additions of Nb, Ti, Al, Mo, Co and C to the Fe-Cr-Ni ternary are assessed by calculation. They confirm the ferritising tendencies of Nb, Ti and Al and the strong austenitising effect of C. Confirmation is also found for the scaling factors in the equivalent Ni and Cr equations in common usage and the paper presents Fe-Cr-Ni ternary sections at 400, 550 and 700 0 C modified for 1 at.% addition of each of the above elements. (orig.) [de

  16. Decay of 57Ni

    International Nuclear Information System (INIS)

    Santos Scardino, A.M. dos.

    1987-01-01

    The decay of 57 Ni to 57 Co was studied by gamma ray spectroscopy using both singles and coincidence spectra. The sources were obtained with the 58 Ni (Y,n) 57 Ni reaction. Natural metallic nickel was irradiated in the bremsstrahluhng beam of the linear accelerator of the Instituto de Fisica da Universidade de Sao Paulo with 30 MeV electrons. The singles espectra were taken with 104 cc HPGe detector and the coincidences espectra with 27 and 53cc Ge(Li) and 104 cc. HPGe detectors. The energies of transitions that follow the 57 Ni decay were measured using 56 Co as standard (which was obtained by (Y,np) reaction in 58 Ni) and taking into account the cascade cross-over relations. (author) [pt

  17. CLASSICAL AREAS OF PHENOMENOLOGY: First-principles calculations for the elastic properties of Ni-base model superalloys: Ni/Ni3Al multilayers

    Science.gov (United States)

    Wang, Yun-Jiang; Wang, Chong-Yu

    2009-10-01

    A model system consisting of Ni[001](100)/Ni3Al[001](100) multi-layers are studied using the density functional theory in order to explore the elastic properties of single crystal Ni-based superalloys. Simulation results are consistent with the experimental observation that rafted Ni-base superalloys virtually possess a cubic symmetry. The convergence of the elastic properties with respect to the thickness of the multilayers are tested by a series of multilayers from 2γ'+2γ to 10γ'+10γ atomic layers. The elastic properties are found to vary little with the increase of the multilayer's thickness. A Ni/Ni3Al multilayer with 10γ'+10γ atomic layers (3.54 nm) can be used to simulate the mechanical properties of Ni-base model superalloys. Our calculated elastic constants, bulk modulus, orientation-dependent shear modulus and Young's modulus, as well as the Zener anisotropy factor are all compatible with the measured results of Ni-base model superalloys R1 and the advanced commercial superalloys TMS-26, CMSX-4 at a low temperature. The mechanical properties as a function of the γ' phase volume fraction are calculated by varying the proportion of the γ and γ' phase in the multilayers. Besides, the mechanical properties of two-phase Ni/Ni3Al multilayer can be well predicted by the Voigt-Reuss-Hill rule of mixtures.

  18. Role of natural nanoparticles on the speciation of Ni in andosols of la Reunion

    Science.gov (United States)

    Levard, Clément; Doelsch, Emmanuel; Rose, Jérôme; Masion, Armand; Basile-Doelsch, Isabelle; Proux, Olivier; Hazemann, Jean-Louis; Borschneck, Daniel; Bottero, Jean-Yves

    2009-08-01

    Andosols on the island of Réunion have high nickel (Ni) concentrations due to the natural pedo-geochemical background. Enhanced knowledge of Ni speciation is necessary to predict the bioavailability and potential toxicity of this element. Ni speciation in these andosols, marked by the presence of high amounts of natural aluminosilicate nanoparticles, was investigated in two complementary systems: (i) In a soil sample—densimetric fractionation was first performed in order to separate the potential bearing phases, prior to Ni speciation characterization. (ii) In a synthetic sample—Ni reactivity with synthetic aluminosilicate nanoparticle analogs were studied. In both cases, Ni speciation was determined using X-ray absorption spectroscopy (XAS). The results revealed that Ni had the same local environment in both systems (natural and synthetic systems), and Ni was chemically linked to natural short-range ordered aluminosilicates or analogs. This complex represented about 75% of the total Ni in the studied soil.

  19. Enhanced Electrocatalytic Activity for Water Splitting on NiO/Ni/Carbon Fiber Paper

    Directory of Open Access Journals (Sweden)

    Ruoyu Zhang

    2016-12-01

    Full Text Available Large-scale growth of low-cost, efficient, and durable non-noble metal-based electrocatalysts for water splitting is crucial for future renewable energy systems. Atomic layer deposition (ALD provides a promising route for depositing uniform thin coatings of electrocatalysts, which are useful in many technologies, including the splitting of water. In this communication, we report the growth of a NiO/Ni catalyst directly on carbon fiber paper by atomic layer deposition and report subsequent reduction and oxidation annealing treatments. The 10–20 nm NiO/Ni nanoparticle catalysts can reach a current density of 10 mA·cm−2 at an overpotential of 189 mV for hydrogen evolution reactions and 257 mV for oxygen evolution reactions with high stability. We further successfully achieved a water splitting current density of 10 mA·cm−2 at 1.78 V using a typical NiO/Ni coated carbon fiber paper two-electrode setup. The results suggest that nanoparticulate NiO/Ni is an active, stable, and noble-metal-free electrocatalyst, which facilitates a method for future water splitting applications.

  20. Determination of As, Cd, and Pb in Tap Water and Bottled Water Samples by Using Optimized GFAAS System with Pd-Mg and Ni as Matrix Modifiers

    Directory of Open Access Journals (Sweden)

    Sezgin Bakırdere

    2013-01-01

    Full Text Available Arsenic, lead, and cadmium were determined in tap and bottled water samples consumed in the west part of Turkey at trace levels. Graphite furnace atomic absorption spectrometry (GFAAS was used in all detections. All of the system parameters for each element were optimized to increase sensitivity. Pd-Mg mixture was selected as the best matrix modifier for As, while the highest signals were obtained for Pb and Cd in the case of Ni used as matrix modifier. Detection limits for As, Cd, and Pb were found to be 2.0, 0.036, and 0.25 ng/mL, respectively. 78 tap water and 17 different brands of bottled water samples were analyzed for their As, Cd, and Pb contents under the optimized conditions. In all water samples, concentration of cadmium was found to be lower than detection limits. Lead concentration in the samples analyzed varied between N.D. and 12.66 ± 0.68 ng/mL. The highest concentration of arsenic was determined as 11.54 ± 2.79 ng/mL. Accuracy of the methods was verified by using a certified reference material, namely, Trace Element in Water, 1643e. Results found for As, Cd, and Pb in reference materials were in satisfactory agreement with the certified values.

  1. Calorimetric and magnetic study for Ni{sub 50}Mn{sub 36}In{sub 14} and relative cooling power in paramagnetic inverse magnetocaloric systems

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Jing-Han, E-mail: jhchen@tamu.edu [Department of Physics and Astronomy, Texas A and M University, College Station, Texas 77843 (United States); Bruno, Nickolaus M. [Department of Mechanical Engineering, Texas A and M University, College Station, Texas 77843 (United States); Karaman, Ibrahim [Department of Mechanical Engineering, Texas A and M University, College Station, Texas 77843 (United States); Department of Materials Science and Engineering, Texas A and M University, College Station, Texas 77843 (United States); Huang, Yujin; Li, Jianguo [School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240 (China); Ross, Joseph H. [Department of Physics and Astronomy, Texas A and M University, College Station, Texas 77843 (United States); Department of Materials Science and Engineering, Texas A and M University, College Station, Texas 77843 (United States)

    2014-11-28

    The non-stoichiometric Heusler alloy Ni{sub 50}Mn{sub 36}In{sub 14} undergoes a martensitic phase transformation in the vicinity of 345 K, with the high temperature austenite phase exhibiting paramagnetic rather than ferromagnetic behavior, as shown in similar alloys with lower-temperature transformations. Suitably prepared samples are shown to exhibit a sharp transformation, a relatively small thermal hysteresis, and a large field-induced entropy change. We analyzed the magnetocaloric behavior both through magnetization and direct field-dependent calorimetry measurements. For measurements passing through the first-order transformation, an improved method for heat-pulse relaxation calorimetry was designed. The results provide a firm basis for the analytic evaluation of field-induced entropy changes in related materials. An analysis of the relative cooling power (RCP), based on the integrated field-induced entropy change and magnetizing behavior of the Mn spin system with ferromagnetic correlations, shows that a significant RCP may be obtained in these materials by tuning the magnetic and structural transformation temperatures through minor compositional changes or local order changes.

  2. Phase Equilibrium Experiments on Potential Lunar Core Compositions: Extension of Current Knowledge to Multi-Component (Fe-Ni-Si-S-C) Systems

    Science.gov (United States)

    Righter, K.; Pando, K.; Danielson, L.

    2014-01-01

    Numerous geophysical and geochemical studies have suggested the existence of a small metallic lunar core, but the composition of that core is not known. Knowledge of the composition can have a large impact on the thermal evolution of the core, its possible early dynamo creation, and its overall size and fraction of solid and liquid. Thermal models predict that the current temperature at the core-mantle boundary of the Moon is near 1650 K. Re-evaluation of Apollo seismic data has highlighted the need for new data in a broader range of bulk core compositions in the PT range of the lunar core. Geochemical measurements have suggested a more volatile-rich Moon than previously thought. And GRAIL mission data may allow much better constraints on the physical nature of the lunar core. All of these factors have led us to determine new phase equilibria experimental studies in the Fe-Ni-S-C-Si system in the relevant PT range of the lunar core that will help constrain the composition of Moon's core.

  3. Effects of multiple root canal usage on the surface topography and fracture of two different Ni-Ti rotary file systems.

    Science.gov (United States)

    Kottoor, Jojo; Velmurugan, Natanasabapathy; Gopikrishna, Velayutham; Krithikadatta, Jogikalmat

    2013-01-01

    The purpose of this study was to evaluate the effect of multiple root canal usage on the surface topography and fracture of Twisted File (TF) and ProTaper (PT) rotary Ni-Ti file systems, using scanning electron microscope (SEM). Ten sets of PT and TF instruments were used to prepare the mesial canals of mandibular first molars. TF 25, 0.06 taper and PT F1 instruments were analyzed by SEM when new and thereafter every three root canal usages. This sequence was repeated for both the TF and PT groups until 12 uses. Two images of the instrument were recorded, one of the instrument tip and the other 5 mm from the tip, both at × 100 magnification. The sequential use was continued till the instrument fractured and the number of root canal usages for the file to fracture was noted. All fracture surfaces were examined under the SEM. Fresh TF instruments showed no surface wear when compared to PT instruments (P 0.05), while at the 9 th usage TF showed a steep increase in the spiral distortion score when compared to PT (P < 0.05). PT instruments fractured at a mean root canal usage of 17.4, while TF instruments showed a mean root canal usage of 11.8. Fractographically, all the TF instruments failed due to torsion, while all the PT instruments failed because of cyclic fatigue. PT instruments showed more resistance to fracture than TF instruments.

  4. High-field magnetostriction in CeNiSn{sub 1-x}Ge{sub x} (0<=x<=1) strongly correlated systems

    Energy Technology Data Exchange (ETDEWEB)

    Moral, A. del, E-mail: delmoral@unizar.e [Laboratorio de Magnetismo de Solidos, Departamento de Fisica de Materia Condensada and ICMA, Universidad de Zaragoza and CSIC, 50009 Zaragoza (Spain); Fuente, C. de la [Laboratorio de Magnetismo de Solidos, Departamento de Fisica de Materia Condensada and ICMA, Universidad de Zaragoza and CSIC, 50009 Zaragoza (Spain)

    2010-05-15

    Magnetization (down to 1.8 K and up to 9 T) and magnetostriction (down to 4.2 K and up to 30 T) measurements have been performed in the series of polycrystalline intermetallics CeNiSn{sub 1-x}Ge{sub x} (0<=x<=1), which show a crossover from Kondo-lattice to fluctuating valence behaviors with x increase. Magnetostriction observed can be denominated as 'colossal' for a paramagnet (up to 0.68% at 150 K and 30 T), with no sign of saturation. Field, H, induced metamagnetic transitions associated to a change in Ce valence are observed. Three kinds of analysis of magnetostriction have been performed to ascertain the magnetostriction origin. At relatively low field and low temperatures these systems follow well the standard theory of magnetostriction (STM), revealing single-ion crystal field and exchange origins, and a determination of the alpha-symmetry microscopic magnetoelastic parameters have been performed. The valence transition is well explained in terms of the interconfigurational model, which needs an extension up to power H{sup 4}. Application of the scaling (thermodynamics corresponding low states) allows the obtainment of the Grueneisen constant, which increases with x. Needed elastic constants measurements are also reported.

  5. Study on automatic tuning of ship`s PID regulators; Hakuyo seigyo system no gain jido chosei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Nakatani, T. [Toyama Mercantile Marine College, Toyama (Japan); Otsu, K.; Moriyoshi, N. [Tokyo Univ. of Mercantile Marine, Tokyo (Japan); Okazaki, T. [Nagoya Institute of Technology, Nagoya (Japan)

    1996-12-31

    Proportional, integral and derivative (PID) controls are used for a steering system and a main engine control unit installed in a vessel. Among them, this paper describes effectiveness of a PID gain tuning method using a limit cycle by means of relay control which is safer and simpler than conventional limit sensitivity methods. The present method was applied to an actual marine control system to conduct an actual vessel experiment. As a result of applying the method to a bow azimuth control system using a rudder, a new azimuth setting was set with an overshoot of 1.6 degrees in a ten-degree azimuth changing experiment. With respect to direction maintaining steering performance, the present method was capable of controlling the direction at a speed loss to about 80% of the ship`s autopilot. As a result of applying the method to a bow azimuth control system using a bow thruster, direction maintaining and changing control was realized in a low speed range in which rudder effect is lost. As a result of applying it to a main engine governor system and performing control of main engine rotation speed, it was found possible to derive control gains in a safe state without applying an excessive load to the main engine both under load and no load conditions. 14 refs., 8 figs., 11 tabs.

  6. Study on automatic tuning of ship`s PID regulators; Hakuyo seigyo system no gain jido chosei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Nakatani, T [Toyama Mercantile Marine College, Toyama (Japan); Otsu, K; Moriyoshi, N [Tokyo Univ. of Mercantile Marine, Tokyo (Japan); Okazaki, T [Nagoya Institute of Technology, Nagoya (Japan)

    1997-12-31

    Proportional, integral and derivative (PID) controls are used for a steering system and a main engine control unit installed in a vessel. Among them, this paper describes effectiveness of a PID gain tuning method using a limit cycle by means of relay control which is safer and simpler than conventional limit sensitivity methods. The present method was applied to an actual marine control system to conduct an actual vessel experiment. As a result of applying the method to a bow azimuth control system using a rudder, a new azimuth setting was set with an overshoot of 1.6 degrees in a ten-degree azimuth changing experiment. With respect to direction maintaining steering performance, the present method was capable of controlling the direction at a speed loss to about 80% of the ship`s autopilot. As a result of applying the method to a bow azimuth control system using a bow thruster, direction maintaining and changing control was realized in a low speed range in which rudder effect is lost. As a result of applying it to a main engine governor system and performing control of main engine rotation speed, it was found possible to derive control gains in a safe state without applying an excessive load to the main engine both under load and no load conditions. 14 refs., 8 figs., 11 tabs.

  7. Visual communication system among underwater robots and divers. Kaichu robot ya diver kan no shikaku ni yoru tsushin

    Energy Technology Data Exchange (ETDEWEB)

    Chiba, H. (East Japan Railway Co., Tokyo (Japan)); Ura, T.; Fujii, T. (The University of Tokyo, Tokyo (Japan). Institute of Industrial Science)

    1993-07-01

    Performing coordinated works between underwater robots and divers, often called undersea agents, requires communication means to promote mutual understanding. This paper describes a system to make visual communications as a communication means used under sea, and discusses elementary technologies to realize mutual communications between the agents. The visual communication system comprises a device to indicate command patterns that correspond to intentions to be communicated using five electroluminescence (EL) panels, a CCD camera, and a transponder. Discussions were given on image processing to recognize the command patterns, EL panel positions, and communication protocols. As a result of experiments assuming underwater communications between divers and robots, using a water tank, it was found that the command patterns can be recognized if illuminance in the water tank is 100 lux or lower. Validity of the system was verified in the experiments. 4 refs., 9 figs., 1 tab.

  8. Effect of small in-plane anisotropy in the large-D phase systems based on Ni{sup 2+} (S=1) ions in Heisenberg antiferromagnetic chains

    Energy Technology Data Exchange (ETDEWEB)

    Rudowicz, Czesław, E-mail: crudowicz@zut.edu.pl

    2014-03-01

    Heisenberg antiferromagnetic chains based on Ni{sup 2+} ions with integer spin S=1 exhibit intriguing behavior, e.g. the Haldane gap phase and the large-D phase. The predicted transitions between the two phases and the Neel phase has generated search for real candidate systems. Crucial to this search is the interplay between the ‘in-plane anisotropy’, i.e. the rhombic zero-field splitting (ZFS) E-term, and the ‘planar anisotropy’, i.e. the axial ZFS D-term. This paper clarifies intricate properties of orthorhombic ZFS Hamiltonians (H{sub ZFS}) and inconsistencies revealed by critical survey of pertinent studies. Reporting the non-standard (D, E) sets with λ=E/D out of the standard range (0, 1/3) alongside the standard sets with λ∝(0, 1/3) indicates that these properties are not recognized. We show that direct comparisons of the non-standard and standard sets are meaningless and lead to incorrect conclusions on the strength of the ‘in-plane anisotropy’ (E) as compared with the ‘planar anisotropy’ (D). To remedy such problems, the ZFSP sets reported for the large-D phase candidate systems are reanalyzed using orthorhombic standardization. The six physically equivalent ZFSP sets are determined in the conventional (D, E) and Stevens (b{sub 2}{sup 0}, b{sub 2}{sup 2}) notation. These considerations help understanding intricacies inherent in orthorhombic H{sub ZFS} and provide consistent data for future modeling of ZFS parameters in the large-D phase and Haldane gap systems.

  9. Heterospin systems constructed from [Cu2Ln]3+ and [Ni(mnt)2]1-,2- Tectons: First 3p-3d-4f complexes (mnt = maleonitriledithiolato).

    Science.gov (United States)

    Madalan, Augustin M; Avarvari, Narcis; Fourmigué, Marc; Clérac, Rodolphe; Chibotaru, Liviu F; Clima, Sergiu; Andruh, Marius

    2008-02-04

    New heterospin complexes have been obtained by combining the binuclear complexes [{Cu(H(2)O)L(1)}Ln(O(2)NO)(3)] or [{CuL(2)}Ln(O(2)NO)(3)] (L(1) = N,N'-propylene-di(3-methoxysalicylideneiminato); L(2) = N,N'-ethylene-di(3-methoxysalicylideneiminato); Ln = Gd(3+), Sm(3+), Tb(3+)), with the mononuclear [CuL(1)(2)] and the nickel dithiolene complexes [Ni(mnt)(2)](q)- (q = 1, 2; mnt = maleonitriledithiolate), as follows: (1)infinity[{CuL(1)}(2)Ln(O(2)NO){Ni(mnt)(2)}].Solv.CH(3)CN (Ln = Gd(3+), Solv = CH(3)OH (1), Ln = Sm(3+), Solv = CH(3)CN (2)) and [{(CH(3)OH)CuL(2)}(2)Sm(O(2)NO)][Ni(mnt)(2)] (3) with [Ni(mnt)2]2-, [{(CH(3)CN)CuL(1)}(2)Ln(H(2)O)][Ni(mnt)(2)]3.2CH(3)CN (Ln = Gd(3+) (4), Sm(3+) (5), Tb(3+) (6)), and [{(CH(3)OH)CuL(2)}{CuL(2)}Gd(O(2)NO){Ni(mnt)(2)}][Ni(mnt)(2)].CH(2)Cl(2) (7) with [Ni(mnt))(2]*-. Trinuclear, almost linear, [CuLnCu] motifs are found in all the compounds. In the isostructural 1 and 2, two trans cyano groups from a [Ni(mnt)2]2- unit bridge two trimetallic nodes through axial coordination to the Cu centers, thus leading to the establishment of infinite chains. 3 is an ionic compound, containing discrete [{(CH(3)OH)CuL(2)}(2)Sm(O(2)NO)](2+) cations and [Ni(mnt)(2)](2-) anions. Within the series 4-6, layers of discrete [CuLnCu](3+) motifs alternate with stacks of interacting [Ni(mnt)(2)](*-) radical anions, for which two overlap modes, providing two different types of stacks, can be disclosed. The strength of the intermolecular interactions between the open-shell species is estimated through extended Hückel calculations. In compound 7, [Ni(mnt)(2)](*-) radical anions coordinate group one of the Cu centers of a trinuclear [Cu(2)Gd] motif through a CN, while discrete [Ni(mnt)(2)](*-) units are also present, overlapping in between, but also with the coordinated ones. Furthermore, the [Cu(2)Gd] moieties dimerize each other upon linkage by two nitrato groups, both acting as chelate toward the gadolinium ion from one unit and monodentate toward a

  10. Apically extruded debris with three contemporary Ni-Ti instrumentation systems: An ex vivo comparative study

    OpenAIRE

    Logani Ajay; Shah Naseem

    2008-01-01

    Aim: To comparatively evaluate the amount of apically extruded debris when ProTaper hand, ProTaper rotary and ProFile systems were used for the instrumentation of root canals. Materials and Methods: Thirty minimally curved, mature, human mandibular premolars with single canals were randomly divided into three groups of ten teeth each. Each group was instrumented using one of the three instrumentation systems: ProTaper hand, ProTaper rotary and ProFile. Five milliliters of sterile water wer...

  11. Researches regarding a constructing problem of a PV system. Part 1. Conscious investigation by means of a questionnaire survey; Taiyoko hatsuden system ni okeru kenchikuteki shomondai no kenkyu. 1. Anketo chosa ni yoru ishiki chosa

    Energy Technology Data Exchange (ETDEWEB)

    Nakajima, Y; Yamazaki, R; Kuroki, T [Kogakuin University, Tokyo (Japan)

    1996-10-27

    The installation and introduction of photovoltaic power generation systems (PVS) in buildings are growingly expected in the construction field from now, coupled with the marketing of a solar cell module as a product for a construction material in the form of an external wall or a roof material for example. For this purpose, it is necessary at first to summarize problems that may arise at the time of or after the installation of PVS as a product. This paper examines an opinion poll, degree of recognition, current problems, etc., of PVS as a result of a questionnaire survey given to engineers and architects engaged in the actual construction business. The degree of recognition and interest was very high. Consultation or request for PVS installation was much more than predicted in numbers. Roughly 50% of the respondents reacted positively for the future installation request of PVS and, combined with the respondents who answered to look into the installation tentatively, not less than 90% were of a forward-looking opinion. The 85% of the respondents was not aware of the monitor business system for residential PVS. Further, the survey clearly brought out the importance of cost problems. 1 ref., 11 figs., 3 tabs.

  12. OAM system based on TMN for utility telecommunication network. Proposal of modeling method about managed objects; TMN ni motozuku denryoku tsushinmo no un`yo kanri system. Kanri object no sekkei shuho ni kansuru kento

    Energy Technology Data Exchange (ETDEWEB)

    Hirozawa, T.; Yusa, H.; Otani, T. [Central Research Institute of Electric Power Industry, Tokyo (Japan); Okamura, K. [Tokyo Electric Power Co. Inc., Tokyo (Japan)

    1996-03-01

    To construct an advanced operation and management system for utility telecommunications management network (TMN), this paper proposes a modeling method of managed objects (MOs) required for managing and managed systems, such as an asynchronous transmission mode (ATM) exchanger. Flexible line setting and path switching control are required for the advanced TMN, which must cope with the extension and modification of functions, flexibly. Assignment of roles of managing sides and managed sides was determined. Then, structures of objects such as facilities and logic data, and their interaction were modeled. Common management functions and objects of each function were classified. Based on the TMN standard and MOs of the existing design peculiar to utility, new MOs peculiar to utility were defined in response to the models. The existing MOs can be effectively utilized, and the optimum MOs to be incorporated can be expected. The MOs peculiar to utility are added to the common specification of electric power industry. Since they can be reused for the extension and modification of functions, the cost can be reduced. The MOs applicable to path switching control of utility were designed as a trial. 9 refs., 16 figs., 10 tabs.

  13. Study on heat collector of the solar system utilizing outdoor air. Experimental results in cases of cold and warm regions; Gaiki donyushiki solar system no shunetsubu ni kansuru kenkyu. Kanreichi to ondanchi ni okeru shunetsu jikken to kosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Komano, S; Ebara, Y [OM Solar Association, Shizuoka (Japan); Wada, H [Wada Building Constructors Co. Ltd., Hokkaido (Japan)

    1996-10-27

    An experiment on heat collection was made in the heat collector of a solar system utilizing outdoor air in cold and warm regions. In this system, outdoor air is heated by the air circulation layer on the roof exposed to solar radiation. The heated air is supplied to the object space for heating and ventilation. In the experiment in a cold region, the heat collection characteristics can be adjusted by putting a baffle plate in the air duct according to the experiment of a glass heat collector. The heat collecting air layer on only the iron roof may leak or freeze in the region subject to coldness or heavy snowfall. Therefore, preheat forms the space of a garret, and the preheat temperature comparatively becomes low. The data in which the heat collection characteristics can be adjusted using only a glass heat collector is required corresponding to the regional situation. In the experiment in a warm region, an experiment was made inclusive of the preheat for which outdoor air is absorbed at the eaves. As a result, the heat collection characteristics of preheat were improved. Moreover, a heat collection temperature of about 60{degree}C was obtained on the heat collection surface including the preheat. 1 ref., 12 figs., 3 tabs.

  14. Creating a Magnetic Imaging System for Diagnosing Infant Brain Activity Based on NI PXI and LabVIEW

    Directory of Open Access Journals (Sweden)

    Christopher G. Atwood

    2006-11-01

    Full Text Available Developing a noninvasive magnetic imaging system to spatially and temporally map the magnetic fields generated by brain activity in infants at severe risk of developing cerebral palsy and epilepsy, so that medical doctors can intervene at an early stage.

  15. Effects of Bond Coating on NiCrBSi-Mo Composite Functional Coating Properties in Plasma Spraying NiCrBSi-Mo/Ni Coating

    OpenAIRE

    DU Ji-yu; LI Fang-yi; LU Hai-yang; SHANG Jian-tong; LI Zhen

    2017-01-01

    Nickel-based bond coating and composite functional coating were sprayed on leaf blade steel material FV520B successively by using air plasma spraying system. NiCrBSi-Mo powder deposition rate, coating porosity, bonding strength and surface hardness were tested. The results indicate that, for the NiCrBSi-Mo/Ni coating, bond coating with 180-220μm thickness can improve NiCrBSi-Mo powder deposition rate while the surface coating with lower porosity, higher bonding strength and high hardness is p...

  16. CVD Graphene/Ni Interface Evolution in Sulfuric Electrolyte

    DEFF Research Database (Denmark)

    Yivlialin, Rossella; Bussetti, Gianlorenzo; Duò, Lamberto

    2018-01-01

    Systems comprising single and multilayer graphene deposited on metals and immersed in acid environments have been investigated, with the aim of elucidating the mechanisms involved, for instance, in hydrogen production or metal protection from corrosion. In this work, a relevant system, namely...... chemical vapor deposited (CVD) multilayer graphene/Ni (MLGr/Ni), is studied when immersed in a diluted sulfuric electrolyte. The MLGr/Ni electrochemical and morphological properties are studied in situ and interpreted in light of the highly oriented pyrolytic graphite (HOPG) electrode behavior, when...... immersed in the same electrolyte. Following this interpretative framework, the dominant role of the Ni substrate in hydrogen production is clarified....

  17. Hexagonal perovskites with cationic vacancies. 22. Polymorphism of the rhombohedral 12 L stacking polytypes in the system Sr/sub 4-x/Ba/sub x/NiRe/sub 2/vacantO/sub 12/

    Energy Technology Data Exchange (ETDEWEB)

    Herrmann, M; Kemmler-Sack, S [Tuebingen Univ. (Germany, F.R.). Lehrstuhl fuer Anorganische Chemie 2

    1980-10-01

    In the system Sr/sub 4-x/Ba/sub x/NiRe/sub 2/vacantO/sub 12/ two different stacking polytypes of the rhombohedral 12 L type are present. Both crystallize in the space group R-3m with the same sequence of the close packed AO/sub 3/ sheets: (3)(1) = (hhcc)/sub 3/. Accordingly the octahedral net consists of groups of three face connected octahedra which are linked by another through single corner sharing octahedra. In the strontium compound, Sr/sub 4/NiRe/sub 2/vacantO/sub 12/, the occupation of the octahedral holes is the same as in other rhombohedral 12 L perovskites of type A/sub 4/(B, M)/sub 3/vacantO/sub 12/ (The two outer octahedra are occupied by rhenium, the center is vacant and the nickel is located in the single octahedron). In the barium stacking polytype, Ba/sub 4/NiRe/sub 2/vacantO/sub 12/, the distribution is completely altered: The rhenium atoms occupy the central position in the block of three face connected octahedra and the single octahedron, the nickel atom and the vacancy are distributed statistically over the two outer positions in the block of three octahedra. Intensity calculations on powder data gave the intensity related R' value of 7.2% for Sr/sub 4/NiRe/sub 2/vacantO/sub 12/ and 6.2% for Ba/sub 4/NiRe/sub 2/vacantO/sub 12/.

  18. FY1995 study of feedback type gait training system; 1995 nendo feedback gata hoko kuren sochi ni kansuru kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The purpose of this project is to develop and demonstrate the utility of feedback type gait training equipment designed for the measurement and evaluation by a walking training of the aged or patient. As similar concepts of walking training, a locomotion in the water for the aged is applied in rehabilitation. Our development of this study established the system of a suspending mechanism which revolves around the prop, and a walking on the circular type force plate by the aged or patient. It is possible to detect a walking reaction force of several patients from force plate simultaneously. And then, the data from force plate makes feedback signal to put up the patient like a buoyancy in the water. Concerning the evaluations of walking pattern a step range, a hanging ratio and a walking speed, etc. are acquired for each patient by the acknowledgment base. This system is actively able to perform a walking training continuously compared with conventional passive gait equipment. (NEDO)

  19. Remote reference processing in MT survey using GPS clock; MT ho ni okeru GPS wo mochiita jikoku doki system

    Energy Technology Data Exchange (ETDEWEB)

    Yamane, K; Inoue, J; Takasugi, S [Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan); Kosuge, S [DRICO Co. Ltd., Tokyo (Japan)

    1996-05-01

    A report is given about the application of a synchronizing system using clock signals from GPS satellites to a remote reference method which is a technique to reject noise from the MT method. This system uses the C/A code out of the L1 band waves from NAVSTAR/GPS satellites. The new system was operated in MT method-using investigations conducted at China Peninsula, Aichi Prefecture, and Izu Peninsula, Shizuoka Prefecture, with the reference points placed several 100km away in Iwate Prefecture on both occasions. It was found as the result that it is basically possible to catch signals from the GPS at any place, that the signals are accurate enough to be applied to time synchronization for the MT method, and that the signals assure a far remote reference method with a separation of several 100km between the sites involved. The referencing process at high frequencies whose feasibility had been doubted proved a success when highly correlated signals were exchanged between two stations over a distance of several 100km. 5 refs., 9 figs.

  20. OpenNI cookbook

    CERN Document Server

    Falahati, Soroush

    2013-01-01

    This is a Cookbook with plenty of practical recipes enriched with explained code and relevant screenshots to ease your learning curve. If you are a beginner or a professional in NIUI and want to write serious applications or games, then this book is for you. Even OpenNI 1 and OpenNI 1.x programmers who want to move to new versions of OpenNI can use this book as a starting point. This book uses C++ as the primary language but there are some examples in C# and Java too, so you need to have about a basic working knowledge of C or C++ for most cases.

  1. Magnetoresistance of nanogranular Ni/NiO controlled by exchange anisotropy

    International Nuclear Information System (INIS)

    Del Bianco, L.; Spizzo, F.; Tamisari, M.; Allia, P.

    2013-01-01

    A link between exchange anisotropy and magnetoresistance has been found to occur in a Ni/NiO sample consisting of Ni nanocrystallites (mean size ∼13 nm, Ni content ∼33 vol%) dispersed in a NiO matrix. This material shows metallic-type electric conduction and isotropic spin-dependent magnetoresistance as well as exchange bias effect. The latter is the outcome of an exchange anisotropy arising from the contact interaction between the Ni phase and the NiO matrix. Combined analysis of magnetization M(H) and magnetoresistance MR(H) loops measured in the 5–250 K temperature range after zero-field-cooling (ZFC) and after field-cooling (FC) from 300 K reveals that the magnetoresistance is influenced by exchange anisotropy, which is triggered by the FC process and can be modified in strength by varying the temperature. Compared to the ZFC case, the exchange anisotropy produces a horizontal shift of the FC MR(H) loop along with a reduction of the MR response associated to the reorientation of the Ni moments. A strict connection between magnetoresistance and remanent magnetization of FC loops on one side and the exchange field on the other, ruled by exchange anisotropy, is indicated. - Highlights: • Nanogranular Ni/NiO with giant magnetoresistance (MR) and exchange bias effect. • Exchange anisotropy produces a shift of the field-cooled MR(H) loop and reduces MR. • MR, remanence of field-cooled loops and exchange field are three correlated quantities. • It is possible to control MR of nanogranular systems through the exchange anisotropy

  2. Ferromagnetic resonance study of sputtered NiFe/V/NiFe heterostructures

    Energy Technology Data Exchange (ETDEWEB)

    Alayo, W., E-mail: willian.rodriguez@ufpel.edu.br [Departamento de Física – IFM, Universidade Federal de Pelotas, 96010-900 Rio Grande do Sul (Brazil); Pelegrini, F. [Instituto de Física, Universidade Federal de Goiás, Goiânia, 74001-970 (Brazil); Baggio-Saitovitch, E. [Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, RJ, 22290-180 (Brazil)

    2015-03-01

    The Ni{sub 81}Fe{sub 19}/V/Ni{sub 81}Fe{sub 19} heterostructures has been produced by magnetron sputtering and analyzed by ferromagnetic resonance. Two systems were investigated: the non symmetrical NiFe(50 Å)/V(t)/NiFe(30 Å) trilayers and the symmetrical NiFe(80 Å)/V(t)/NiFe(80 Å) trilayers, with variable ultrathin V thickness t. Ferromagnetic exchange coupling was evidenced for t below 10 Å by the excitation of the optic mode, in the case of the non symmetrical samples, and by the observation of a single resonance mode for the symmetrical trilayers. For larger V thickness, all samples exhibited two modes, which were attributed to the resonance of the individual NiFe layers with different effective magnetizations. The analysis with the equilibrium and resonance conditions provided the exchange coupling constants and effective magnetizations. - Highlights: • We present a study of symmetrical and non symmetrical NiFe/V/NiFe trilayers deposited on Si single crystals by ferromagnetic resonance (FMR) at room temperature. • For the non symmetrical trilayers, the FMR spectra show the optic and acoustic modes for samples with very thin V layer thicknesses, evidencing ferromagnetic exchange coupling, whereas, for larger V thickness, the spectra exhibited two well resolved modes associated to each independent NiFe layer. For the symmetrical trilayers, strong ferromagnetic exchange coupling is evidenced by the observation of a single resonance mode. • The analysis with the equilibrium condition and dispersion relation provides the exchange coupling constants and effective magnetizations.

  3. Processing and Mechanical Properties of NiAl-Based In-Situ Composites. Ph.D. Thesis Final Report

    Science.gov (United States)

    Johnson, David Ray

    1994-01-01

    In-situ composites based on the NiAl-Cr eutectic system were successfully produced by containerless processing and evaluated. The NiAl-Cr alloys had a fibrous microstructure while the NiAl-(Cr,Mo) alloys containing 1 at. percent or more molybdenum exhibited a lamellar structure. The NiAl-28Cr-6Mo eutectic displays promising high temperature strength while still maintaining a reasonable room temperature fracture toughness when compared to other NiAl-based materials. The Laves phase NiAlTa was used to strengthen NiAl and very promising creep strengths were found for the directionally solidified NiAl-NiAlTa eutectic. The eutectic composition was found to be near NiAl-15.5Ta (at. percent) and well aligned microstructures were produced at this composition. An off-eutectic composition of NiAl-14.5Ta was also processed, consisting of NiAl dendrites surrounded by aligned eutectic regions. The room temperature toughness of these two phase alloys was similar to that of polycrystalline NiAl even with the presence of the brittle Laves phase NiAlTa. Polyphase in-situ composites were generated by directional solidification of ternary eutectics. The systems investigated were the Ni-Al-Ta-X (X=Cr, Mo, or V) alloys. Ternary eutectics were found in each of these systems and both the eutectic composition and temperature were determined. Of these ternary eutectics, the one in the NiAl-Ta-Cr system was found to be the most promising. The fracture toughness of the NiAl-(Cr,Al)NiTa-Cr eutectic was intermediate between those of the NiAl-NiAlTa eutectic and the NiAl-Cr eutectic. The creep strength of this ternary eutectic was similar to or greater than that of the NiAl-Cr eutectic.

  4. Comparative study of NiW, NiMo and MoW prepared by mechanical alloying

    International Nuclear Information System (INIS)

    Gonzalez, G.; Sagarzazu, A.; Villalba, R.; Ochoa, J.

    2007-01-01

    The present work concern the amorphisation process induced by mechanical alloying in the NiW, NiMo and MoW systems. The alloys chosen combine a group of transition elements varying from very similar atomic radius and electronic valences (MoW) to different ones (NiW and NiMo). The three systems achieved an amorphous state after 50 h of milling. The mechanism of amorphisation proposed for NiW and NiMo was the combined effect of an excess concentration of the solute atoms entering into the structure of one of the elements and a critical concentration of defects. Continuous formation of an amorphous phase at the interface of the crystalline phase was observed during the process. MoW seems to amorphize by continuous reduction of grain size down to a critical value where the amorphisation takes place

  5. Fundamental characteristics on electric system of solar electric vehicle; Solar car no denki keito ni kansuru kiso tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Fujita, S; Sasaki, M; Kaga, T; Koyama, N [Hachinohe Institute of Technology, Aomori (Japan)

    1996-10-27

    The electric system of a solar vehicle was removed and the fundamental characteristics examined in order to carry out a basic experiment on the electric system. Using a basic circuit with panels, batteries and loads connected, the voltage and current were measured in the presence/absence of the trackers, batteries, etc., and then, their effects were examined. Simultaneously, the quantity of solar radiation was also measured. The lowering of the output voltage was somewhat relaxed with the use of the trackers. Further, with the trackers used, the output voltage of the panel was small in spite of a large quantity of solar radiation compared to the case without the trackers, which was due to the restriction of the output voltage by the trackers. When measured without batteries, the output voltage of the panel was such that the load current was also influenced by the variation of insolation, so that, with a large decrease in insolation, the load current was decreased with the supply of current suspended from the panel. 7 figs., 1 tab.

  6. Feasibility study on introducing new energy systems into Asian villages; Asia sonraku ni okeru shin energy donyu kanosei chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    For improvement of living standards in unelectrified areas of Asia, the feasibility of new energy power generation systems was surveyed. The degree of electrification of local areas is different every country, and Thailand is ahead of other countries, while Laos and Cambodia are most unelectrified. Power supply of 100W/house seems to be adequate for local areas because of weather condition, housing situation and life-style. Economic support and education on electricity are necessary for poor areas. Although needs for new energy is increasing, the priority is given to industrial and urbanized areas because of cost and investment effects, and remote areas are dependent on grant- in-aid. Resources of photovoltaic, wind power and micro- hydraulic energies are abundant, however, selection of energy and verification of its usability are important, and the local energy density maps were thus prepared. In introduction of new energy, after selection of energy suitable for an area concerned, such geographical and social conditions should be surveyed as road condition, water rights, land utilization, economic support system, policy and intention of inhabitants. 76 refs., 68 figs., 91 tabs.

  7. Positron annihilation studies in CeNiIn and LaNiIn

    International Nuclear Information System (INIS)

    Ray, R.; Giri, S.; Sen, M.; Nambissan, P.M.G.; Ghoshray, K.; Ghoshray, A.; Sen, P.

    1997-01-01

    Doppler broadened positron annihilation spectral lineshape (DBPAS) and positron lifetime measurements in the temperature range 18-280 K have been performed in CeNiIn and LaNiIn systems. The nature of the temperature variations of the lifetime in both systems is almost similar in the whole temperature range studied, whereas the nature of the temperature variation of the S parameter in CeNiIn is similar to that in LaNiIn except in the temperature region 18-40 K. For the former system there is a dip around 20 K in the S parameter versus temperature curve. The lifetime versus T curve in both systems could be explained by the thermal expansion of the lattice. The S parameter versus T curve in LaNiIn could also be attributed to the thermal expansion of the lattice, whereas in CeNiIn the above mentioned dip seems an extra feature of the thermal expansion of the lattice. To understand this low temperature behaviour other results on the same system have been discussed. (orig.)

  8. Design and model experiments on thruster assisted mooring system; Futaishiki kaiyo kozobutsu no thruster ni yoru choshuki doyo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, M; Koterayama, W [Kyushu Univ., Fukuoka (Japan). Research Inst. for Applied Mechanics; Kajiwara, H [Kyushu Institute of Technology, Kitakyushu (Japan). Faculty of Computer Science and System Engineering; Hyakudome, T [Kyushu University, Fukuoka (Japan)

    1997-12-31

    Described herein are dynamics and model experiments of the system in which positioning of a floating marine structure by mooring is combined with thruster-controlled positioning. Coefficients of dynamic forces acting on a floating structure model are determined experimentally and by the three-dimensional singularity distribution method, and the controller is designed by the PID, LQI and H{infinity} control theories. A model having a scale ratio of 1/100 was used for the experiments, where 2 thrusters were arranged in a diagonal line, one on the X-axis. It is found that the LQI and H{infinity} controllers of the thruster can control long-cycle rolling of the floating structure. They allow thruster control which is insensitive to wave cycle motion, and efficiently reduce positioning energy. The H{infinity} control regulates frequency characteristics of a closed loop more finely than the LQI control, and exhibits better controllability. 25 refs., 25 figs.

  9. Design and model experiments on thruster assisted mooring system; Futaishiki kaiyo kozobutsu no thruster ni yoru choshuki doyo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, M.; Koterayama, W. [Kyushu Univ., Fukuoka (Japan). Research Inst. for Applied Mechanics; Kajiwara, H. [Kyushu Institute of Technology, Kitakyushu (Japan). Faculty of Computer Science and System Engineering; Hyakudome, T. [Kyushu University, Fukuoka (Japan)

    1996-12-31

    Described herein are dynamics and model experiments of the system in which positioning of a floating marine structure by mooring is combined with thruster-controlled positioning. Coefficients of dynamic forces acting on a floating structure model are determined experimentally and by the three-dimensional singularity distribution method, and the controller is designed by the PID, LQI and H{infinity} control theories. A model having a scale ratio of 1/100 was used for the experiments, where 2 thrusters were arranged in a diagonal line, one on the X-axis. It is found that the LQI and H{infinity} controllers of the thruster can control long-cycle rolling of the floating structure. They allow thruster control which is insensitive to wave cycle motion, and efficiently reduce positioning energy. The H{infinity} control regulates frequency characteristics of a closed loop more finely than the LQI control, and exhibits better controllability. 25 refs., 25 figs.

  10. Structure of Ni-rich Ni--Cr--B--Si coating alloys

    International Nuclear Information System (INIS)

    Knotek, O.; Lugscheider, E.; Reimann, H.

    1975-01-01

    The structures of quaternary, nickel-rich Ni--Cr--B--Si alloys were analyzed at a constant boron content of 10 at. percent and a temperature of 850 0 C. The composition range for silicide formation was determined. In these quaternary alloys, known binary nickel silicides, nickel and chromium borides, and the ternary silico-boride Ni 6 Si 2 B were confirmed. A new composition for the W 5 Si 3 -type phase in the Ni--B--Si system was proposed. (U.S.)

  11. A study on FlexMaster : a Ni-Ti rotary engine driven system for root canal preparation.

    Science.gov (United States)

    Alam, M S; Bashar, A K; Begumr, J A; Kinoshita, J I

    2006-07-01

    In the present study, the effectiveness of recently introduced rotary Nickel Titanium FlexMaster engine driven system was evaluated for cleaning and shaping of root canals in extracted human teeth and compared with that done by the Nickel Titanium Flexofile hand instruments. A total of 40 root canals from 36 extracted mandibular and maxillary teeth with curvature ranging between 20 and 30 degree were divided into two groups, consisting 20 canals in each. FlexMaster instrumentation was done in 20 canals, using crown-down technique and manual filing with Flexofile was done in other 20 canals, using conventional and step-back techniques. 5.25% sodium hypochlorite (NaOCl) solution and 17% ethelene di-amine tetra-acetic acid (EDTA) were used alternatively for irrigation after canal preparation by each instrument size. Time needed for canal preparation of individual canal was recorded. A procedural error such as instrument breakage was also noted. After preparation, all the roots were cut longitudinally by using diamond burs in turbine handpiece and examined under scanning electron microscope. Apical region was quantified for debris and smear layer based on a 5-score numerical evaluation scale. The data established for scoring the debris and smear layer and preparation time of individual canal were analyzed statistically using the Mann-Whitney U test. Completely cleaned root canals were not found with any of the two instruments and none of the instruments maintained the original canal uniformity and regular dentine surface. Because significantly less debris was found in the apical region using the manual filing technique (p< 0.05). Thus the flexmaster system was found to produce less cleaner root canal walls than manual technique. Only one FlexMaster finishing file sized 30 was separated in the apical region during preparation of 30 degree curved canal. The time taken by FlexMaster was significantly better (p< 0.01) than that of hand instruments.

  12. Composição de bagas de 'Niágara Rosada' e 'Folha-de-Figo' relacionadas ao sistema de condução Fruit composition of 'Niágara Rosada' and 'Folha-de-Figo' grapevines under different training systems

    Directory of Open Access Journals (Sweden)

    Renata Vieira da Mota

    2010-12-01

    Full Text Available RESUMO Este trabalho teve como objetivo avaliar a influência do sistema de condução na qualidade de bagas de uvas 'Niágara Rosada' e 'Folha-de-Figo' cultivadas em Caldas-MG. Foram avaliados a produção por planta, o diâmetro, a massa, o teor de potássio e a temperatura das bagas, pH, teor de sólidos solúveis, açúcares redutores, acidez total e ácidos orgânicos do mosto, compostos fenólicos nas cascas e sementes, e antocianinas. As plantas foram conduzidas em espaldeira, lira, latada ou cordão simples, e os frutos, avaliados nas safras de 2006 e 2007. As videiras de 'Niágara Rosada' cultivadas em latada e 'Folha-de-Figo' em lira apresentaram produção significativamente superior aos demais sistemas de condução. Em todos os casos, as bagas apresentaram temperatura inferior à ambiente, indicando sombreamento completo ou parcial dos cachos. No sistema latada, houve menor acúmulo de sólidos solúveis e açúcares redutores nas duas cultivares. Estes resultados preliminares indicam que a composição das bagas foi pouco influenciada pelo sistema de condução.ABSTRACT This work aimed on evaluating the influence of training systems in berries composition of 'Niágara Rosada' and 'Folha-de-Figo' grapevines grown in Caldas, MG. Yield per plant; diameter, weight, temperature and potassium content of the berries; pH, soluble solids, reducing sugars, total acidity and organic acids of the must; anthocyanins and phenolic compounds of the skins and phenolic compounds of the seeds were evaluated in grapevines training in vertical shoot position, lyre trellis, pergola Veronese or simple string in 2006 and 2007 seasons. 'Niágara Rosada' and 'Folha-de-Figo' grapevines training in pergola Veronese and lyre trellis, respectively, showed higher yield than the other training systems under study. Berries grown under the four different training systems were cooler than ambient temperature, resulting from partial or deep shade clusters. Berries

  13. Hydride Reactivity of Ni-II-X-Ni-II Entities : Mixed-Valent Hydrido Complexes and Reversible Metal Reduction

    NARCIS (Netherlands)

    Gehring, Henrike; Metzinger, Ramona; Herwig, Christian; Intemann, Julia; Harder, Sjoerd; Limberg, Christian

    After the lithiation of PYR-H2 (PYR2-=[{NC(Me)C(H)C(Me)NC6H3(iPr)2}2(C5H3N)]2-), which is the precursor of an expanded beta-diketiminato ligand system with two binding pockets, its reaction with [NiBr2(dme)] led to a dinuclear nickel(II)bromide complex, [(PYR)Ni(mu-Br)NiBr] (1). The bridging bromide

  14. Study on molecular controlled mining system of methane hydrate; Methane hydrate no bunshi seigyo mining ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kuriyagawa, M; Saito, T; Kobayashi, H; Karasawa, H; Kiyono, F; Nagaoki, R; Yamamoto, Y; Komai, T; Haneda, H; Takahashi, Y [National Institute for Resources and Environment, Tsukuba (Japan); Nada, H [Science and Technology Agency, Tokyo (Japan)

    1997-02-01

    Basic studies are conducted for the collection of methane from the methane hydrate that exists at levels deeper than 500m in the sea. The relationship between the hydrate generation mechanism and water cluster structure is examined by use of mass spectronomy. It is found that, among the stable liquid phase clusters, the (H2O)21H{sup +} cluster is the most stable. Stable hydrate clusters are in presence in quantities, and participate in the formation of hydrate crystal nuclei. For the elucidation of the nucleus formation mechanism, a kinetic simulation is conducted of molecules in the cohesion system consisting of water and methane molecules. Water molecules that array near methane molecules at the normal pressure is disarrayed under a higher pressure for rearray into a hydrate structure. Hydrate formation and breakdown in the three-phase equilibrium state of H2O, CH4, and CO2 at a low temperature and high pressure are tested, which discloses that supercooling is required for formation, that it is possible to extract CH4 first for replacement by guest molecule CO2 since CO2 is stabler than CH4 at a lower pressure or higher temperature, and that formation is easier to take place when the grain diameter is larger at the formation point since larger grain diameters result in a higher formation temperature. 3 figs.

  15. Effects of multiple root canal usage on the surface topography and fracture of two different Ni-Ti rotary file systems

    Directory of Open Access Journals (Sweden)

    Jojo Kottoor

    2013-01-01

    Full Text Available Aim: The purpose of this study was to evaluate the effect of multiple root canal usage on the surface topography and fracture of Twisted File (TF and ProTaper (PT rotary Ni-Ti file systems, using scanning electron microscope (SEM. Materials and Methods: Ten sets of PT and TF instruments were used to prepare the mesial canals of mandibular first molars. TF 25, 0.06 taper and PT F1 instruments were analyzed by SEM when new and thereafter every three root canal usages. This sequence was repeated for both the TF and PT groups until 12 uses. Two images of the instrument were recorded, one of the instrument tip and the other 5 mm from the tip, both at ×100 magnification. The sequential use was continued till the instrument fractured and the number of root canal usages for the file to fracture was noted. All fracture surfaces were examined under the SEM. Results: Fresh TF instruments showed no surface wear when compared to PT instruments (P 0.05, while at the 9 th usage TF showed a steep increase in the spiral distortion score when compared to PT (P < 0.05. PT instruments fractured at a mean root canal usage of 17.4, while TF instruments showed a mean root canal usage of 11.8. Fractographically, all the TF instruments failed due to torsion, while all the PT instruments failed because of cyclic fatigue. Conclusion: PT instruments showed more resistance to fracture than TF instruments.

  16. Comparison of performance between a parallel and a series solar-heat pump system; Solar heat pump system ni okeru heiretsu setsuzoku no seino hikaku

    Energy Technology Data Exchange (ETDEWEB)

    Kanayama, K; Zhao, J; Baba, H; Endo, N [Kitami Institute of Technology, Hokkaido (Japan)

    1997-11-25

    In a solar heat pump system, a single-tank system was fabricated, in which a heat pump is installed in series between a heat collecting tank and a heat storage tank. At the same time, a double-tank system was also fabricated, in which two tanks are assembled into one to which a solar system and a heat pump are connected in parallel. Performance of both systems was analyzed by using measured values and estimated values. Heat collecting efficiency in the double-tank system is higher by about 13 points than in the single-tank system. Nevertheless, the coefficient of performance for the single-tank system is 1.03 to 1.51 times greater than that of the double-tank system. Dependency of the single-tank system on natural energy is higher by 0.3 to 3 points than the double-tank system. Putting the above facts together, it may be said that the single-tank system connecting the solar system and the heat pump in parallel is superior in performance to the double-tank system of the series connection. 3 refs., 5 figs., 2 tabs.

  17. A new approach to establish both stable and metastable phase equilibria for fcc ordered/disordered phase transition: application to the Al–Ni and Ni–Si systems

    International Nuclear Information System (INIS)

    Yuan Xiaoming; Zhang Lijun; Du Yong; Xiong Wei; Tang Ying; Wang Aijun; Liu Shuhong

    2012-01-01

    Both two-sublattice (2SL) and four-sublattice (4SL) models in the framework of the compound energy formalism can be used to describe the fcc ordered/disordered transitions. When transferring the parameters of 2SL disregarding the metastable ordered states into those of 4SL, inconsistence in either stable or metastable phase diagrams could appear, as detected in both Al–Ni and Ni–Si systems. To avoid such a kind of drawback, this behavior was analyzed and investigated in the Ni–Si and Al–Ni systems with the aid of first–principle calculations. Furthermore, a new approach considering both the stable and metastable fcc ordered phase equilibria deduced from the first–principles calculations was proposed to perform a reliable thermodynamic modeling for the fcc ordered/disordered transition. The Ni–Si system was then thermodynamically assessed using the presently proposed approach. The good agreement between the calculation and experiments demonstrates the reliability of the proposed approach. It is expected that the approach is valid for other systems showing complex ordered/disordered transitions. - Highlights: ► We discuss the drawbacks of order/disorder modeling in the Ni–Si and Al–Ni systems. ► We perform ab initio calculation of thermodynamic properties in the Ni–Si system. ► A CALPHAD–type approach is proposed to model the fcc ordered/disordered transition. ► The Ni–Si system was thermodynamically assessed using the new approach.

  18. Crystalline, Optical and Electrical Properties of NiZnO Thin Films Fabricated by MOCVD

    International Nuclear Information System (INIS)

    Wang Jin; Wang Hui; Zhao Wang; Ma Yan; Li Wan-Cheng; Shi Zhi-Feng; Zhao Long; Zhang Bao-Lin; Dong Xin; Du Guo-Tong; Xia Xiao-Chuan

    2011-01-01

    NiZnO thin films are grown on c-plane sapphire substrates by using a photo-assisted metal organic chemical vapor deposition (MOCVD) system. The effect of the Ni content on the crystalline, optical and electrical properties of the films are researched in detail. The NiZnO films could retain a basic wurtzite structure when the Ni content is less than 0.18. As Ni content increases, crystal quality degradation could be observed in the x-ray diffraction patterns and a clear red shift of the absorption edge can be observed in the transmittance spectrum. Furthermore, the donor defects in the NiZnO film can be compensated for effectively by increasing the Ni content. The change of Ni content has an important effect on the properties of NiZnO films. (condensed matter: electronic structure, electrical, magnetic, and optical properties)

  19. Effect of Ni interlayer on diffusion bonding of a W alloy and a Ta alloy

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Jian; Liu, Ruxia; Wei, Qinqin; Luo, Guoqiang; Shen, Qiang; Zhang, Lianmeng [Wuhan Univ. of Technology (China). The State Key Lab. of Advanced Technology for Materials Synthesis and Processing

    2017-11-01

    The combination of W and Ta is expected to be highly beneficial for many applications from aerospace, weapons, military and nuclear industry. In this paper, W and Ta alloys were successfully diffusion bonded with Ni interlayer. The process of the formation of W/Ni/Ta diffusion bonded joints was investigated by means of scanning electron microscopy, X-ray diffraction system, electron probe micro-analyzer, energy dispersive spectrometry and shear strength measurement. The results show that the shear strength increases when the bonding temperature increases and exhibits a maximum value of 244 MPa at 930 C. The bonding of W/Ni can be attributed to the bonding of Ni to tungsten grains and the bonding of Ni to a Ni-Fe-binder mainly by elemental diffusion. The fracture takes place in the Ni/Ta interface and Ni{sub 3}Ta and Ni{sub 2}Ta intermetallic compounds are formed on the fracture surfaces.

  20. Insulation diagnosis of rotating machines for elevators by an expert system based on fuzzy inference. Fuzzy suiron wo donyushita expert system ni yoru shokokiyo kaitenki no zetsuen shindan

    Energy Technology Data Exchange (ETDEWEB)

    Kaneko, K.; Oshima, H. (Tokai Univ., Tokyo (Japan)); Yamada, N.; Iijima, T. (Mitsubishi Electric Building Techno-Service Co. Ltd., Tokyo (Japan))

    1992-11-20

    Using the data measured with the insulation deterioration diagnostic system for rotating machines for elevators, which is newly developed utilizing the past experience, an expert system which enables insulation deterioration diagnosis even by field maintenance engineers to some extent. In this system, the knowledge and experience of specialists are loaded in a personal computer as the rule for insulation deterioration diagnosis to perform insulation deterioration diagnosis by fuzzy inference and 'hypothesis-verification' type backward reasoning inference. The structured expert system is outlined. The result of insulation diagnosis by this system s compared with that made by specialists to evaluate the effectiveness of the diagnosed result of this system, and shows 84% agreement with the results obtained by specialists. It is, therefore, considered to be a highly practical expert system. 10 refs., 7 figs., 1 tab.

  1. Phase separation and antisite defects in the thermoelectric TiNiSn half-Heusler alloys

    International Nuclear Information System (INIS)

    Kirievsky, K.; Gelbstein, Y.; Fuks, D.

    2013-01-01

    The half-Heusler TiNiSn alloys have recently gained an attention as promising candidates for thermoelectric applications. Improvement of these alloys for such applications can be obtained by both electronic and compositional optimizations. The latter can result in a miscibility gap, allowing a phase separation in the nano-scale and consequently a thermal conductivity reduction. Combination of ab initio calculations and statistical thermodynamics was applied for studying the relative stability of a number of superstructures in TiNiSn based alloys. The quasi-binary phase diagram beyond T=0 K for TiNiSn–TiNi 2 Sn solid solutions was calculated using energy parameters extracted from the total energy calculations for ordered structures in the Ni sublattice. We demonstrated that a decomposition of the off-stoichiometric Ni-rich half-Heusler alloy into the stoichiometric TiNiSn phase and into Ni deficient Heusler TiNi 2 Sn phase occurs at elevated temperatures—an effect which recently had been observed experimentally. Furthermore, favorable energetic conditions for antisite defects formation were deduced, based on calculations of the energy of formation, an effect which was explained as a cooperative process of partial disordering on the Ni sublattice. The influence of these two effects on improvement of the thermoelectric performance of TiNiSn based half Heusler compounds is discussed. - Graphical abstract: Phase separation and antisite defects in the thermoelectric TiNiSn alloy, are covered as methods for nanostructuring and thereby enhancement of the thermoelectric potential. - Highlights: • Ab initio calculations/statistical thermodynamics was applied for studying the TiNiSn system. • The phase diagram for TiNiSn–TiNi 2 Sn solid solutions was calculated. • Decomposition of the Ni-rich HH into TiNiSn and Ni deficient TiNi 2 Sn phases was observed. • Favorable energetic conditions for antisite defects formation were deduced

  2. Application of photovoltaic generating system to electric power in large ship; Taiyoko hatsuden system no ogata senpaku eno oyo ni kansuru kento

    Energy Technology Data Exchange (ETDEWEB)

    Katagi, T; Ogawa, S; Nishikawa, E; Hashimoto, T [Kobe University of Mercantile Marine, Kobe (Japan); Ishida, K

    1996-10-27

    This paper describes the design of electric power system in a ship with photovoltaic power generating system, to examine applicability of the photovoltaic power generating system to the inboard power source. It also discusses effectiveness of the system for sea environment. At first, the actual route of a car carrier, meteorological data, and quantity of power consumption were picked up from the deck logbook and engine logbook. Then, the installation area of photovoltaic arrays, the quantity of photovoltaic power generation derived from the quantity of solar radiation, and the capacities of batteries and inverters were calculated, to design the electric power system in the ship with photovoltaic power generation system. Moreover, the NOx and SOx emissions were compared between the present power system and the usual power system using diesel power generator, to discuss the effectiveness of the present system for sea environment. Consequently, it was found that the emission of NOx was reduced by about 33% and the emission of SOx was reduced by about 28% compared to the usual power system. The effectiveness for sea environment was confirmed. 9 refs., 5 figs., 4 tabs.

  3. Evaluation report on research and development of a subsea petroleum production system; Kaitei sekiyu seisan system no kenkyu kaihatsu ni kansuru hyoka hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-03-01

    In order to assure stable supply of oil and natural gas resources, and achieve enhancement in ocean development technologies in general, development has been made on the subsea petroleum production system (SBPPS), which is effective in ocean floor petroleum production from oil fields at great depths (300 m or deeper), and can be applicable to continental shelves and continental slopes around Japan. The SBPPS consists of four sub-systems of shafts, pipelines, manifolds, and riser and oil storage, whose basic development targets were established for the total system. The system was given a conceptual design for the total system, and the above four sub-systems were designed according to the conceptual design. The experimenting devices of each system were fabricated on a trial basis while fundamental studies are being made on component technologies, and experiments were performed to verify basic functions of the sub-systems. Developments were made on such operation technologies as the system operation technology, production control technology, safety control technology, and maintenance and repair technology required to operate the SBPPS. On-shore and general off-shore experiments were carried out to verify the functions of the experimenting devices of each system, the comprehensive functions and the operation technology. Comprehensive evaluation was given on the above achievements from the technical, economic and social viewpoints. (NEDO)

  4. Triple differential cross section for angle, atomic number and energy (or angular momentum transfer) calculated for the 280MeV 40Ar+58Ni (or 365 MeV 63Cu+197Au) system in a simple model

    International Nuclear Information System (INIS)

    Berlanger, M.; Grange, P.; Richert, J.; Hofmann, H.; Ngo, C.

    1978-01-01

    A dynamical model including both dissipation and statistical fluctuations is applied to the computation of triple differential cross sections for deep inelastic reactions. It is seen that for different Z values the overall pattern of the cross section (calculated, for the 280 MeV 40 Ar+ 58 Ni system) as a function of E and theta is fairly well reproduced - the mean angular momentum transfer for the 365MeV 63 Cu+ 197 Au system is calculated and compared with γ-multiplicity measurements. In both applications, possible implications of the remaining discrepancies are discussed

  5. FY 1998 annual summary report on shared product life-cycle total information system. 3; 1998 nendo joho kyoyugata product lifecycle system ni kansuru chosa hokokusho. 3

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Recycling resources is gaining importance increasingly to correspond to global environmental problems. In urban areas, in particular, it is important to efficiently recover and recycle used large-size consumer products, e.g., home electric appliances and automobiles, which are discharged in large quantities. This study proposes a shared product life-cycle total information system, based on recognition that material recycling systems, encompassing stock materials, product production, consumption, and disposal and recycling of wastes, are essential. This system corresponds a material to information, in an attempt to realize more efficient recycling of products. The study for this fiscal year was focused on use of information modules attached to products and their members, product recycling systems using these modules, necessity for and problems involved in thermal recycle systems, problems involved in recycling home electric appliances and extraction of the data for their recycling, and material recycling process systems for home electric appliances and automobiles. (NEDO)

  6. Achievement report on research and development of optics-aided measurement/control system; Hikari oyo keisoku seigyo system no kenkyu kaihatsu ni kansuru hyoka hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1986-03-01

    The project aims to establish technologies for putting the above-named system to practical use. Such a system will measure, transmit, and control, with safety and stability by use of optical technologies, industrial process related information to be generated in certain areas such as industrial complexes and very large plants, the information including images, temperatures, flow rates, constituents, etc. Total system evaluation was performed in demonstration tests for appropriateness conducted for 32 systems in fiscal 1980 and 10 systems in fiscal 1981. Studied in the development of element technologies are opto-electronic integrated circuits (OEIC), semiconductor laser devices, light-intercepting devices, optical transmission paths, dielectric light switches, and optical sensors. For OEIC, in particular, since it is believed to be the nucleus of an optical application system, an optical technology joint research office is established, where efforts center on the substrate crystal growth technology, process technology, and crystal/process evaluation technology. (NEDO)

  7. Internal carbonitriding behavior of Ni-V, Ni-Cr, and Ni-3Nb alloys

    International Nuclear Information System (INIS)

    Allen, A.T.; Douglass, D.L.

    1999-01-01

    Ni-2V, Ni-5V, Ni-12V, Ni-10Cr, Ni-20Cr, and Ni-3Nb alloys were carbonitrided in C 3 H 6 and NH 3 gas mixtures (bal H 2 ) over the range 700--1,000 C. Carbonitridation of Ni-12V and Ni-20Cr in C 3 H 6 /NH 3 /H 2 (1.5/1.5/97 v/o) and (1.5/10/88.5 v/o) produced duplex subscales consisting of near-surface nitrides with underlying carbides. Growth of each zone obeyed the parabolic rate law under most conditions. The presence of carbon generally did not effect the depth of the nitride zones compared to nitriding the alloys in NH 3 /H 2 (10/90 v/o). However, at 700 C, the nitride zones were deeper in the carbonitrided Ni-V alloys and Ni-20Cr. The presence of nitrogen generally increased the depth of the carbide zones in Ni-12V and Ni-20Cr compared to carburizing these alloys in C 3 H 6 /H 2 (1.5/98.5 v/o). VN, CrN, and NbN formed in Ni-V, Ni-Cr, and Ni-Nb alloys, respectively, whereas the underlying carbide layers contained V 4 C 3 in Ni-12V, Cr 3 C 2 above a zone of Cr 7 C 3 in Ni-20Cr, and NbC in Ni-3Nb. The solubilities and diffusivities of nitrogen and carbon in nickel were determined. Nitrogen and carbon each exhibited retrograde solubility with temperature in pure Ni in both carbonitriding environments. Nitrogen diffusion in nickel was generally lower in each carbonitriding mixture compared to nitrogen diffusion in a nitriding environment, except at 700 C when nitrogen diffusion was higher. Carbon diffusion in nickel was generally higher in the carbonitriding environments compared to carbon diffusion in a carburizing environment

  8. Dye-sensitized MIL-101 metal organic frameworks loaded with Ni/NiO{sub x} nanoparticles for efficient visible-light-driven hydrogen generation

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Xin-Ling; Wang, Rong; Yuan, Yu-Peng, E-mail: yupengyuan@ahu.edu.cn, E-mail: cxue@ntu.edu.sg [School of Chemistry and Chemical Engineering, and Innovation Lab for Clean Energy and Green Catalysis, Anhui University, Hefei 230036 (China); Zhang, Ming-Yi [Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025 (China); Xue, Can, E-mail: yupengyuan@ahu.edu.cn, E-mail: cxue@ntu.edu.sg [Solar Fuels Lab, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

    2015-10-01

    The Ni/NiO{sub x} particles were in situ photodeposited on MIL-101 metal organic frameworks as catalysts for boosting H{sub 2} generation from Erythrosin B dye sensitization under visible-light irradiation. The highest H{sub 2} production rate of 125 μmol h{sup −1} was achieved from the system containing 5 wt. % Ni-loaded MIL-101 (20 mg) and 30 mg Erythrosin B dye. Moreover, the Ni/NiO{sub x} catalysts show excellent stability for long-term photocatalytic reaction. The enhancement on H{sub 2} generation is attributed to the efficient charge transfer from photoexcited dye to the Ni catalyst via MIL-101. Our results demonstrate that the economical Ni/NiO{sub x} particles are durable and active catalysts for photocatalytic H{sub 2} generation.

  9. Dye-sensitized MIL-101 metal organic frameworks loaded with Ni/NiOx nanoparticles for efficient visible-light-driven hydrogen generation

    Directory of Open Access Journals (Sweden)

    Xin-Ling Liu

    2015-10-01

    Full Text Available The Ni/NiOx particles were in situ photodeposited on MIL-101 metal organic frameworks as catalysts for boosting H2 generation from Erythrosin B dye sensitization under visible-light irradiation. The highest H2 production rate of 125 μmol h−1 was achieved from the system containing 5 wt. % Ni-loaded MIL-101 (20 mg and 30 mg Erythrosin B dye. Moreover, the Ni/NiOx catalysts show excellent stability for long-term photocatalytic reaction. The enhancement on H2 generation is attributed to the efficient charge transfer from photoexcited dye to the Ni catalyst via MIL-101. Our results demonstrate that the economical Ni/NiOx particles are durable and active catalysts for photocatalytic H2 generation.

  10. Evaluation of the performance in the solar assisted heat pump system; Taiyonetsu riyo heat pump system no seino hyoka ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Saito, Y [Osaka Institute of Technology, Osaka (Japan)

    1996-10-27

    Performance of a solar heating system with a hydrothermal source heat pump was evaluated and compared with that of a direct solar heating system. The sun-dependency rates ({Sigma}D and {Sigma}H)of the direct system and heat pump (HP)-provided system were expressed as a function of the rate ({alpha}) of the auxiliary heat against the collected heat and as a function of the performance coefficient and {alpha}, respectively. When the sun-dependency rates are compared, it is found that the HP-provided system is the more advantageous when {Sigma}H/{Sigma}D>1. The relationship between the {alpha}`s of the two systems was clarified and computation was performed to compare the sun-dependency rates on condition that the two are equal in the heat collecting area. Although the sun-dependence rate cannot be elevated to 100% in the HP-provided system, it achieves a sun-dependency rate higher than that of the direct system even when the heat collecting area is small. In cases where the building is economically limited, for instance, with respect to the area for solar collector installation, it is advantageous to employ the HP-provided system. 5 figs., 1 tab.

  11. Formation, thermal stability and mechanical properties of bulk glassy alloys with a diameter of 20 mm in Zr-(Ti,Nb)-Al-Ni-Cu system

    International Nuclear Information System (INIS)

    Inoue, A.; Zhang, Q.S.; Zhang, W.; Yubuta, K.; Son, K.S.; Wang, X.M.

    2009-01-01

    Bulk glassy alloy rods with a diameter of 20 mm were produced for Zr 61 Ti 2 Nb 2 Al 7.5 Ni 10 Cu 17.5 and Zr 60 Ti 2 Nb 2 Al 7.5 Ni 10 Cu 18.5 by a tilt casting method. The replacement of Zr by a small amount of Ti and Nb caused a distinct increase in the maximum diameter from 16 mm for Zr 65 Al 7.5 Ni 10 Cu 17.5 to 20 mm, accompanying the decrease in liquidus temperature and the increase in reduced glass transition temperature. The primary precipitation phase from supercooled liquid also shows a distinct change, i.e., from coexistent Zr 2 Cu, Zr 2 Ni and Zr 6 NiAl 2 phases for the 65%Zr alloy to an icosahedral phase for the 61%Zr and 60%Zr alloys. These results allow us to presume that the enhancement of the glass-forming ability is due to an increase in the stability of supercooled liquid against crystallization caused by the development of icosahedral short-range ordered atomic configurations. The 60%Zr specimens taken from the central and near-surface regions in the transverse cross section at the site which is 15 mm away from the bottom surface of the cast glassy rod with a diameter of 20 mm exhibit good mechanical properties under a compressive deformation mode, i.e., Young's modulus of 81 GPa, large elastic strain of 0.02, high yield strength of 1610 MPa and distinct plastic strain of 0.012. Besides, a number of shear bands are observed along the maximum shear stress plane on the peripheral surface near the final fracture site. The finding of producing the large scale Zr-based bulk glassy alloys exhibiting reliable mechanical properties is encouraging for future advancement of bulk glassy alloys as a new type of functional material. (author)

  12. Tunable Twin Matching Frequency (fm1/fm2) Behavior of Ni1−xZnxFe2O4/NBR Composites over 2–12.4 GHz: A Strategic Material System for Stealth Applications

    Science.gov (United States)

    Saini, Lokesh; Patra, Manoj Kumar; Jani, Raj Kumar; Gupta, Goutam Kumar; Dixit, Ambesh; Vadera, Sampat Raj

    2017-01-01

    The gel to carbonate precipitate route has been used for the synthesis of Ni1−xZnxFe2O4 (x = 0, 0.25, 0.5 and 0.75) bulk inverse spinel ferrite powder samples. The optimal zinc (50%) substitution has shown the maximum saturation magnetic moment and resulted into the maximum magnetic loss tangent (tanδm) > −1.2 over the entire 2–10 GHz frequency range with an optimum value ~−1.75 at 6 GHz. Ni0.5Zn0.5Fe2O4- Acrylo-Nitrile Butadiene Rubber (NBR) composite samples are prepared at different weight percentage (wt%) of ferrite loading fractions in rubber for microwave absorption evaluation. The 80 wt% loaded Ni0.5Zn0.5Fe2O4/NBR composite (FMAR80) sample has shown two reflection loss (RL) peaks at 5 and 10 GHz. Interestingly, a single peak at 10 GHz for 3.25 mm thickness, can be scaled down to 5 GHz by increasing the thickness up to 4.6 mm. The onset of such twin matching frequencies in FMAR80 composite sample is attributed to the spin resonance relaxation at ~5 GHz (fm1) and destructive interference at λm/4 matched thickness near ~10 GHz (fm2) in these composite systems. These studies suggest the potential of tuning the twin frequencies in Ni0.5Zn0.5Fe2O4/NBR composite samples for possible microwave absorption applications. PMID:28294151

  13. Tunable Twin Matching Frequency (fm1/fm2) Behavior of Ni1-xZnxFe2O4/NBR Composites over 2-12.4 GHz: A Strategic Material System for Stealth Applications

    Science.gov (United States)

    Saini, Lokesh; Patra, Manoj Kumar; Jani, Raj Kumar; Gupta, Goutam Kumar; Dixit, Ambesh; Vadera, Sampat Raj

    2017-03-01

    The gel to carbonate precipitate route has been used for the synthesis of Ni1-xZnxFe2O4 (x = 0, 0.25, 0.5 and 0.75) bulk inverse spinel ferrite powder samples. The optimal zinc (50%) substitution has shown the maximum saturation magnetic moment and resulted into the maximum magnetic loss tangent (tanδm) > -1.2 over the entire 2-10 GHz frequency range with an optimum value ~-1.75 at 6 GHz. Ni0.5Zn0.5Fe2O4- Acrylo-Nitrile Butadiene Rubber (NBR) composite samples are prepared at different weight percentage (wt%) of ferrite loading fractions in rubber for microwave absorption evaluation. The 80 wt% loaded Ni0.5Zn0.5Fe2O4/NBR composite (FMAR80) sample has shown two reflection loss (RL) peaks at 5 and 10 GHz. Interestingly, a single peak at 10 GHz for 3.25 mm thickness, can be scaled down to 5 GHz by increasing the thickness up to 4.6 mm. The onset of such twin matching frequencies in FMAR80 composite sample is attributed to the spin resonance relaxation at ~5 GHz (fm1) and destructive interference at λm/4 matched thickness near ~10 GHz (fm2) in these composite systems. These studies suggest the potential of tuning the twin frequencies in Ni0.5Zn0.5Fe2O4/NBR composite samples for possible microwave absorption applications.

  14. Surface properties of nanostructured NiO undergoing electrochemical oxidation in 3-methoxy-propionitrile

    Science.gov (United States)

    Bonomo, Matteo; Marrani, Andrea Giacomo; Novelli, Vittoria; Awais, Muhammad; Dowling, Denis P.; Vos, Johannes G.; Dini, Danilo

    2017-05-01

    Nanostructured nickel oxide (NiO) was deposited in the configuration of thin film (thickness, l = 2-6 μm) onto fluorine-doped tin oxide (FTO) substrates via plasma-assisted rapid discharge sintering (RDS). Electrochemical cycling of RDS NiO in 3-methoxy-propionitrile (3-MPN) revealed two characteristic peaks of NiO oxidation which were associated to the surface-confined redox processes Ni(II) → Ni(III) and Ni(III) → Ni(IV). Grazing angle X-ray photoelectron spectroscopy (XPS) was conducted ex-situ on NiO electrodes in both pristine and oxidized states. Oxidized NiO samples for XPS experiments were obtained in the potentiostatic mode through the polarization of NiO at its two characteristic potentials of oxidation. The XPS analysis allowed to ascertain the electronic structure of the nanoporous NiO framework, and verify the adsorption of perchlorate and chloride anions onto NiO surface due to the compensation of the charge stored in oxidized NiO. XPS also revealed that the spectrum within the region characteristic of Ni 2p ionization does not vary considerably with the state of charge of the nickel centres. This finding is in evident contrast to what has been observed for the same system when it undergoes electrochemical oxidation in aqueous electrolyte.

  15. Improvement of diesel engine performance by hydraulically powered electronic control (mechatronics) system. Hakuyo diesel kikan no mechatronics system ni yoru seino kojo

    Energy Technology Data Exchange (ETDEWEB)

    Sonoda, K.; Nakamura, Y.; Kajima, T.; Sato, S.; Fujii, T.; Tobe, Y. (Kawasaki Heavy Industries, Ltd., Tokyo (Japan))

    1992-07-20

    This paper describes new hydraulically-actuated mechanisms for both fuel injection and inlet/exhaust valve operation of diesel engines through solenoid valves, which obviate the conventional cam-driven system. These mechanisms were integrated with an electronic control unit also developed in this study and they were mounted as a mechatronics system'' on a power-increased single-cylinder engine. This mechatronics system was mainly composed of an injection control. boost and accumulation component, an inlet and exhaust valve control component, a solenoid valve, an electronic control equipment, a hydraulic power unit, and a maneuvering unit. The verification test was carried out for the improvement of diesel engine performance by the hydraulically powered mechatronics system. As a result, it was proved not only that these mechanisms provide stable operating characteristics over a wide range of conditions, but also that the electronic control system allows accurate, smooth response. 3 refs., 23 figs., 2 tabs.

  16. Survey on the life cycle system of a product with shared information; Joho kyoyugata product life cycle system ni kansuru chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    This report provides and proposes new concept and optimization technology on the life cycle system of product for emission minimum. For the proposed life cycle system of product with shared information, the global emission minimum is realized by considering the final emission, the information is given to the product and shared in all the life cycle system, the information sending function is considered from the product, and the information necessary for material processing are actively used. For this life cycle system of product, development of the information model for the system, development of the technology of data saving, renewing, searching and sending, development of sensing and re-using technologies of the product for life cycle, development of the technology attaching information in the product for emission minimum, design of the guidelines of material composition, and research and development of materials for emission minimum are extracted and provided as tasks. 26 refs., 69 figs., 8 tabs.

  17. The process of Ni-63 production and measurement of beta radiation of irradiated Ni-63

    International Nuclear Information System (INIS)

    Kim, Jin Joo; Uhma, Young Rang; Kim, Jong Bum; Choi, Sang Mu; Son, Kwang Jae; Hong, Jin Tae; Park, Jong Han

    2016-01-01

    It has the following characteristics: long service lifetime, high energy density, easy small-scale fabrication, and minimum maintenance. For this reasons, betavoltaic batteries are widely used in many low-power applications such as medical applications and power sources for micro electro-mechanical system (MEMS) because they can operate effectively at extreme environments. Proper selection of radioisotope is a critical factor in the design of a betavoltaic battery. The important factors affecting the performance of a betavoltaic battery are specific activity, half-life, and toxicity. In this study, a target for irradiation was produced using 99% Ni-62 metal power concentrate. Ni-62 target of 1 g was irradiated in MARIA reactor operated in Poland for 470 hours, and estimated production of Ni- 63 was calculated. Irradiated Ni-63 pellets were dissolved in HCl solution, and its beta radiation was measured by Liquid Scintillation Counter (LSC).

  18. Evaluation report on the research and development of automatic sewing systems; 'Jido hosei system' no kenkyu kaihatsu ni kansuru hyoka hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-03-01

    A comprehensive evaluation is made upon completion of the automatic sewing system research and development project. The project aims to achieve a 50% increase in productivity through effective use of a multiple-product/small-amount production scheme in small and medium sewing industries. The intelligent cloth inspecting machine (prior to sewing) in a laser-aided cutting system is as competent as the currently used sewing mill inspection system, and the resultant data are effectively utilized in the cutting process. As for the cutter, it is demonstrated that it is more than two times higher in cutting speed than a currently used laser cutting system; that it is sufficiently accurate in avoiding parts with flaws and in pattern matching; and that it is reliable in complying with process information provided. As for the flexible sewing system, it is acknowledged that it correctly recognizes information attached to cut parts and that it joins them with flexibility in response to changes in the material, pattern, or size. As for the high-technology assembling system, satisfaction is found in its automated 3-dimensional sewing of parts received from the previous stage and in its flow of production. As for the 3-dimensional flexible press, the quality after finish is found satisfying. The said systems are integratedly operated, and it is found that the goal of the research and development has been achieved. (NEDO)

  19. Evaluation report on the research and development of automatic sewing systems; 'Jido hosei system' no kenkyu kaihatsu ni kansuru hyoka hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-03-01

    A comprehensive evaluation is made upon completion of the automatic sewing system research and development project. The project aims to achieve a 50% increase in productivity through effective use of a multiple-product/small-amount production scheme in small and medium sewing industries. The intelligent cloth inspecting machine (prior to sewing) in a laser-aided cutting system is as competent as the currently used sewing mill inspection system, and the resultant data are effectively utilized in the cutting process. As for the cutter, it is demonstrated that it is more than two times higher in cutting speed than a currently used laser cutting system; that it is sufficiently accurate in avoiding parts with flaws and in pattern matching; and that it is reliable in complying with process information provided. As for the flexible sewing system, it is acknowledged that it correctly recognizes information attached to cut parts and that it joins them with flexibility in response to changes in the material, pattern, or size. As for the high-technology assembling system, satisfaction is found in its automated 3-dimensional sewing of parts received from the previous stage and in its flow of production. As for the 3-dimensional flexible press, the quality after finish is found satisfying. The said systems are integratedly operated, and it is found that the goal of the research and development has been achieved. (NEDO)

  20. Deflection control system for prestressed concrete bridges by CCD camera. CCD camera ni yoru prestressed concrete kyo no tawami kanri system

    Energy Technology Data Exchange (ETDEWEB)

    Noda, Y.; Nakayama, Y.; Arai, T. (Kawada Construction Co. Ltd., Tokyo (Japan))

    1994-03-15

    For the long-span prestressed concrete bridge (continuous box girder and cable stayed bridge), the design and construction control becomes increasingly complicated as construction proceeds because of its cyclic works. This paper describes the method and operation of an automatic levelling module using CCD camera and the experimental results by this system. For this automatic levelling system, the altitude can be automatically measured by measuring the center location of gravity of the target on the bridge surface using CCD camera. The present deflection control system developed compares the measured value by the automatic levelling system with the design value obtained by the design calculation system, and manages them. From the real-time continuous measurement for the long term, in which the CCD camera was set on the bridge surface, it was found that the stable measurement accuracy can be obtained. Successful application of this system demonstrates that the system is an effective and efficient construction aid. 11 refs., 19 figs., 1 tab.

  1. Calculation of Gibbs energy of Zr-Al-Ni, Zr-Al-Cu, Al-Ni-Cu and Zr-Al-Ni-Cu liquid alloys based on quasiregular solution model

    International Nuclear Information System (INIS)

    Li, H.Q.; Yang, Y.S.; Tong, W.H.; Wang, Z.Y.

    2007-01-01

    With the effects of electronic structure and atomic size being introduced, the mixing enthalpy as well as the Gibbs energy of the ternary Zr-Al-Cu, Ni-Al-Cu, Zr-Ni-Al and quaternary Zr-Al-Ni-Cu systems are calculated based on quasiregular solution model. The computed results agree well with the experimental data. The sequence of Gibbs energies of different systems is: G Zr-Al-Ni-Cu Zr-Al-Ni Zr-Al-Cu Cu-Al-Ni . To Zr-Al-Cu, Ni-Al-Cu and Zr-Ni-Al, the lowest Gibbs energy locates in the composition range of X Zr 0.39-0.61, X Al = 0.38-0.61; X Ni = 0.39-0.61, X Al = 0.38-0.60 and X Zr = 0.32-0.67, X Al = 0.32-0.66, respectively. And to the Zr-Ni-Al-Cu system with 66.67% Zr, the lowest Gibbs energy is obtained in the region of X Al = 0.63-0.80, X Ni = 0.14-0.24

  2. Coal structure construction system with construction knowledge and partial energy evaluation; Kochiku chishiki to bubunteki energy hyoka ni yoru sekitan bunshi kozo kochiku system

    Energy Technology Data Exchange (ETDEWEB)

    Okawa, T.; Sasai, T.; Komoda, N. [Osaka University, Osaka (Japan). Faculty of Engineering

    1996-10-28

    The computer aided coal structure construction system is proposed, and a computational construction example is presented. The coal structure construction engine of this system fabricates molecular structure by connecting fragments sequentially inputted through a user interface. The best structure candidate is determined using construction knowledge and partial energy evaluation every addition of one fragment, and this process is subsequently repeated. The structure evaluation engine analyzes the 3-D conformation candidate by molecular dynamics, and evaluates the conformation by determining the energy value of an optimum structure. As an example, this system was applied to construction of coal molecular structure based on the actual data of partial structure composed of 26 structures from 2l kinds of aromatic cluster structures, 27 bonds from 2 kinds of bridged bonds, and 16 groups from 2 kinds of terminal substitutional groups. As a result, this system could construct a superior structure according to expert knowledge from the viewpoint of energy. 6 refs., 5 figs., 2 tabs.

  3. R and D contract management systems in the USA (Attachment); Beikoku ni okeru R and D contract kanri system (tenpu shiryohen)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-02-01

    Presented herein is the attachment for 'R and D contract management systems in the USA'. The major contents include regulations governing the R and D contracts, procedures for the R and D contracts, financial procedures for the R and D contracts, procedures for the alternative R and D contracts, financial management of the R and D contracts, and activities for the management of the contract processes by electronic systems. (NEDO)

  4. R and D contract management systems in the USA (Attachment); Beikoku ni okeru R and D contract kanri system (tenpu shiryohen)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-02-01

    Presented herein is the attachment for 'R and D contract management systems in the USA'. The major contents include regulations governing the R and D contracts, procedures for the R and D contracts, financial procedures for the R and D contracts, procedures for the alternative R and D contracts, financial management of the R and D contracts, and activities for the management of the contract processes by electronic systems. (NEDO)

  5. Elementary martensitic transformation processes in Ni-rich NiTi single crystals with Ni4Ti3 precipitates

    International Nuclear Information System (INIS)

    Michutta, J.; Somsen, Ch.; Yawny, A.; Dlouhy, A.; Eggeler, G.

    2006-01-01

    The present study shows that multiple-step martensitic transformations can be observed in aged Ni-rich NiTi single crystals. Ageing of solution-annealed and water-quenched Ni-rich NiTi single crystals results in a homogeneous precipitation of coherent Ni 4 Ti 3 particles. When the interparticle spacing reaches a critical value (order of magnitude: 200 nm), three distinct transformation processes are observed on cooling from the high-temperature phase using differential scanning calorimetry and in situ transmission electron microscopy. The transformation sequence begins with the formation of R-phase starting from all precipitate/matrix interfaces (first step). The transformation continues with the formation of B19' and its subsequent growth along all precipitate/matrix interfaces (second step). Finally, the matrix in between the precipitates transforms to B19' (third step). Elementary transformation mechanisms which account for two- and three-step transformations in a system with small-scale microstructural heterogeneities were identified

  6. Report on evaluation of research and development of resources recycling/reutilization systems. Phase 2; Shigen saisei riyo gijutsu system no kenkyu kaihatsu (dainiki) ni kansuru hyoka hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1983-08-01

    Described herein are the final evaluation results obtained by the 7-year R and D project, beginning in the FY 1976, established by the national project system for developing the techniques for treating urban solid wastes. This project has developed a semi-wet type selective crushing/sorting unit for sorting the wastes, and established the elementary techniques for recycling the wastes into various products, e.g., compost, pulp, combustible gases, aggregates, methane gas, or fuel oil. Two types of total treating systems, in which these elementary techniques are integrated, have been developed; one is to recover materials and the other energy. They can comprehensively, efficiently treat the wastes, adapting themselves to various situations. Pyrolysis which discharges reduced quantities of flue gases is adopted. Waste water is treated, mainly by biological treatment which is supported by the conventional methods, e.g., coagulation and adsorption. The cost estimation results indicate that the total system developed by this project can compare favorably with the conventional incineration system under general conditions, at a capacity of 300 t/d or more, when taking into consideration the secondary effects brought by the recycling/reutilization. This system is commercially feasible, when it meets with local characteristics, e.g., garbage collecting systems, market values of recycled resources, treatment/disposal conditions, and natural and social environments. This project has sufficiently achieved the original objectives. (NEDO)

  7. Optimal operation by dynamic programming in a solar/electric hot-water system; Taiyonetsu/denryoku kyuto system no doteki keikakuho ni yoru saiteki un`yo

    Energy Technology Data Exchange (ETDEWEB)

    Edo, S; Kenmoku, Y; Sakakibara, T [Toyohashi University of Technology, Aichi (Japan); Nakagawa, S [Maizuru College of Technology, Kyoto (Japan); Kawamoto, T [Shizuoka University, Shizuoka (Japan)

    1997-11-25

    With regard to utilization of a solar/electric hot-water system, a discussion was given by using a dynamic programming method on operation of a system which minimizes power charge. The discussed system is an installation in a welfare facility accommodating 100 persons, where solar heat is stored in a heat storage tank from a heat collector, and utilized for hot water supply. If the solar heat is insufficient for required hot water quantity, the water is heated by using an electric heater. The discussion compared the system operation using the dynamic programming method with the following two systems: the operation method 1, which does not utilize insolation forecast and the operation method 2, in which insolation forecast is utilized and late-night electric power is utilized for heating water in shortage. As a result of the calculation, the operation using the dynamic programming method conducts heat storage by utilizing the late-night power even if insolation is sufficient in winter in order to suppress heating by utilizing late-night power for days with less insolation. Thus, suppression is given on excessive utilization of day-time power and on rise in annual maximum power demand. It was found that the present system reduces power consumption by 37.7% when compared with the operation method 1, and 22.7% when compared even with the operation method 2. 3 refs., 5 figs., 3 tabs.

  8. Evaluation report on research and development of 'the comprehensive water recycling and utilization systems'; 'Mizu sogo saisei riyo system' no kenkyu kaihatsu ni kansuru hyoka hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-08-01

    This research and development project is aimed at treatment of sewage, industrial waste water and the like at lower cost for reutilization, while efficiently producing methane or the like by the systems annexed to the water treatment systems with high-concentration bio-reactor systems incorporating separation membranes. The waste water types studied to be treated by these systems include sewage discharged in large quantities and waste water containing oil/fat and protein (low-concentration waste water), and starch-, alcohol and paper/pulp-containing waste water, and excrements (medium-concentration waste water). The project has found the optimum systems, by adequately configuring the separation membrane modules, and combining dissolution of suspended solid with methane fermentation reactors for selective treatment of organic substances; improved efficiencies of removing organic substances and producing methane by fermentation, and realized reduction in quantities of discharged sludge; and thereby established the bases for the new waste water treatment techniques. The reactor systems developed for water treatment are those based on biological removal of nitrogen. They greatly reduce treatment time to produce treated water of high quality. For treatment of sludge, the techniques have been developed to convert sludge into oil. These results are well applicable to various areas, e.g., sewage treatment, and food and pulp industries. (NEDO)

  9. Three-dimensional electrode of Ni/Co layered double hydroxides@NiCo2S4@graphene@Ni foam for supercapacitors with outstanding electrochemical performance

    International Nuclear Information System (INIS)

    Tao, Yan; Ruiyi, Li; Lin, Zhou; Chenyang, Ma; Zaijun, Li

    2015-01-01

    -electrodes test system and two-electrodes test system, respectively. The 3D electrode exhibits high specific capacitance (2001.2 F g −1 ), big areal capacitance (15.21 F cm −2 ), high rate capability (1645.6 F g −1 at the current density of 8 A g −1 ) and prominent synergetic effect (more than 1.6-fold that of the theoretical capacitance) in a three-electrode test system with 3 M KOH electrolyte. Interestingly, the addition of K 3 Fe(CN) 6 into the KOH electrolyte further enhances the pseudocapacitance via both directly contributing pseudocapacitance to the Ni/Co-LDH@NiCo 2 S 4 @G and promoting electron gain and loss of Co and Ni ions. The specific capacitance increases to 6282.6 F g −1 at the current density of 6 A g −1 . The asymmetric supercapacitor of Ni/Co-LDH@NiCo 2 S 4 @G/activated carbon provides the energy density of 102.8 W h kg −1 at the power density of 800 W kg −1 in the two-electrodes test system, which is close to that of lithium ion battery. Such a large capacitive performance make it can be used as promising electrode materials for next-generation high-performance supercapacitors

  10. Surface properties of nanostructured NiO undergoing electrochemical oxidation in 3-methoxy-propionitrile

    Energy Technology Data Exchange (ETDEWEB)

    Bonomo, Matteo [Department of Chemistry, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome (Italy); Marrani, Andrea Giacomo, E-mail: andrea.marrani@uniroma1.it [Department of Chemistry, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome (Italy); Novelli, Vittoria [Department of Chemistry, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome (Italy); Awais, Muhammad [Department of Industrial Engineering, “King Abdulaziz” University, Rabigh (Saudi Arabia); Solar Energy Conversion Strategic Research Cluster, University College Dublin (UCD), Belfield, Dublin 4 (Ireland); Dowling, Denis P. [Solar Energy Conversion Strategic Research Cluster, University College Dublin (UCD), Belfield, Dublin 4 (Ireland); School of Mechanical and Materials Engineering, University College Dublin (UCD), Belfield, Dublin 4 (Ireland); Vos, Johannes G. [School of Chemical Sciences, Dublin City University (DCU), Glasnevin, Dublin 9 (Ireland); Dini, Danilo [Department of Chemistry, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome (Italy); Solar Energy Conversion Strategic Research Cluster, University College Dublin (UCD), Belfield, Dublin 4 (Ireland)

    2017-05-01

    Highlights: • NiO porous thin films were prepared via RDS technique. • NiO electrodes were characterized in a nitrile based electrochemical cell. • NiO electrodes were studied by means of XPS. • The XP spectra excluded the formation of phases other than NiO. • The presence of ClO{sub 4}{sup −} as charge balancing species was evidenced. - Abstract: Nanostructured nickel oxide (NiO) was deposited in the configuration of thin film (thickness, l = 2–6 μm) onto fluorine-doped tin oxide (FTO) substrates via plasma-assisted rapid discharge sintering (RDS). Electrochemical cycling of RDS NiO in 3-methoxy-propionitrile (3-MPN) revealed two characteristic peaks of NiO oxidation which were associated to the surface-confined redox processes Ni(II) → Ni(III) and Ni(III) → Ni(IV). Grazing angle X-ray photoelectron spectroscopy (XPS) was conducted ex-situ on NiO electrodes in both pristine and oxidized states. Oxidized NiO samples for XPS experiments were obtained in the potentiostatic mode through the polarization of NiO at its two characteristic potentials of oxidation. The XPS analysis allowed to ascertain the electronic structure of the nanoporous NiO framework, and verify the adsorption of perchlorate and chloride anions onto NiO surface due to the compensation of the charge stored in oxidized NiO. XPS also revealed that the spectrum within the region characteristic of Ni 2p ionization does not vary considerably with the state of charge of the nickel centres. This finding is in evident contrast to what has been observed for the same system when it undergoes electrochemical oxidation in aqueous electrolyte.

  11. Surface properties of nanostructured NiO undergoing electrochemical oxidation in 3-methoxy-propionitrile

    International Nuclear Information System (INIS)

    Bonomo, Matteo; Marrani, Andrea Giacomo; Novelli, Vittoria; Awais, Muhammad; Dowling, Denis P.; Vos, Johannes G.; Dini, Danilo

    2017-01-01

    Highlights: • NiO porous thin films were prepared via RDS technique. • NiO electrodes were characterized in a nitrile based electrochemical cell. • NiO electrodes were studied by means of XPS. • The XP spectra excluded the formation of phases other than NiO. • The presence of ClO 4 − as charge balancing species was evidenced. - Abstract: Nanostructured nickel oxide (NiO) was deposited in the configuration of thin film (thickness, l = 2–6 μm) onto fluorine-doped tin oxide (FTO) substrates via plasma-assisted rapid discharge sintering (RDS). Electrochemical cycling of RDS NiO in 3-methoxy-propionitrile (3-MPN) revealed two characteristic peaks of NiO oxidation which were associated to the surface-confined redox processes Ni(II) → Ni(III) and Ni(III) → Ni(IV). Grazing angle X-ray photoelectron spectroscopy (XPS) was conducted ex-situ on NiO electrodes in both pristine and oxidized states. Oxidized NiO samples for XPS experiments were obtained in the potentiostatic mode through the polarization of NiO at its two characteristic potentials of oxidation. The XPS analysis allowed to ascertain the electronic structure of the nanoporous NiO framework, and verify the adsorption of perchlorate and chloride anions onto NiO surface due to the compensation of the charge stored in oxidized NiO. XPS also revealed that the spectrum within the region characteristic of Ni 2p ionization does not vary considerably with the state of charge of the nickel centres. This finding is in evident contrast to what has been observed for the same system when it undergoes electrochemical oxidation in aqueous electrolyte.

  12. 61Ni synchrotron radiation-based Mössbauer spectroscopy of nickel-based nanoparticles with hexagonal structure

    Science.gov (United States)

    Masuda, Ryo; Kobayashi, Yasuhiro; Kitao, Shinji; Kurokuzu, Masayuki; Saito, Makina; Yoda, Yoshitaka; Mitsui, Takaya; Hosoi, Kohei; Kobayashi, Hirokazu; Kitagawa, Hiroshi; Seto, Makoto

    2016-01-01

    We measured the synchrotron-radiation (SR)-based Mössbauer spectra of Ni-based nanoparticles with a hexagonal structure that were synthesised by chemical reduction. To obtain Mössbauer spectra of the nanoparticles without 61Ni enrichment, we developed a measurement system for 61Ni SR-based Mössbauer absorption spectroscopy without X-ray windows between the 61Ni84V16 standard energy alloy and detector. The counting rate of the 61Ni nuclear resonant scattering in the system was enhanced by the detection of internal conversion electrons and the close proximity between the energy standard and the detector. The spectrum measured at 4 K revealed the internal magnetic field of the nanoparticles was 3.4 ± 0.9 T, corresponding to a Ni atomic magnetic moment of 0.3 Bohr magneton. This differs from the value of Ni3C and the theoretically predicted value of hexagonal-close-packed (hcp)-Ni and suggested the nanoparticle possessed intermediate carbon content between hcp-Ni and Ni3C of approximately 10 atomic % of Ni. The improved 61Ni Mössbauer absorption measurement system is also applicable to various Ni materials without 61Ni enrichment, such as Ni hydride nanoparticles. PMID:26883185

  13. Nipah Virus (NiV)

    Science.gov (United States)

    ... Form Controls Cancel Submit Search the CDC Nipah Virus (NiV) Note: Javascript is disabled or is not ... gov . Recommend on Facebook Tweet Share Compartir Nipah virus (NiV) is a member of the family Paramyxoviridae , ...

  14. Hear recovery properties from fuel cell system for telecommunications use; Tsushin`yo nenryo denchi system no fuirudotesuto ni okeru hainetsu kaishu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ishizawa, M.; Iida, S.; Abe, I.; Amanuma, H. [NTT Integrated Information and Energy Systems Laboratories Tokyo (Japan); Uekusa, T.; Waragai, S. [NTT Power and Building Eacilities Inc., Tokyo (Japan)

    1997-12-20

    NTT is developing a phosphoric acid fuel cell energy system for telecommunication co-generation systems to reduce energy costs and help preserve the environment. Fuel cells are used to provide electrical power to telecommunication equipment and the heat energy that is generated is used by the absorption refrigerator to cool the telecommunication rooms throughout the year. We fieldtested this fuel cell energy system in a telephone office for three years. Heat recovered water from fuel cell stack coolant was supplied to the absorption refrigerator and further extra-heat was recovered by a heat exchanger. The toral heat recovery amount was about 86000 kca/h (the heat recovery efficiency was 20%) under 200kW operation. The absorption refrigerator was supplied about 49000kcal/h of heat and operated with 0.7 of coefficient of performance throughtout the year. The electrical efficiency was maintained more than 38% after 13000h operation. 12 refs., 10 figs., 3 tabs.

  15. Learning model of eye movement system based on anatomical structure; Kaibogakuteki kozo ni motozuita gakushu kino wo motsu gankyu undo system to sono tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, X.; Wakamatsu, H. [Tokyo Medical and Dental University, Tokyo (Japan)

    1998-07-01

    A learning system is proposed to explain the adaptive function of an eye movement consisting of compensatory and optokinetic reflex, and pursuit movements based on the brain anatomy and physiology. Thereby, the learning system is synthesized as an artificial neural network based on the structure and function of the biological neural network of flocculus. The role of neural paths into flocculus from stretch receptors of ocular muscles are discussed in detail from the viewpoint of system control engineering. The mathematical learning process is also shown taking into account the adaptive mechanism and the anatomical structure of vestibular nuclei. The experimental results through simulation confirm the validity of the hypothesis and the appropriateness of the inference process in connection with the proposed mathematical model. 18 refs., 11 figs.

  16. FABRICATION OF Cu-Al-Ni SHAPE MEMORY THIN FILM BY THERMAL EVOPRATION

    OpenAIRE

    Özkul, İskender; Canbay, Canan Aksu; Tekataş, Ayşe

    2017-01-01

    Among the functional, materials shape memory alloysare important because of their unique properties. So, these materials haveattracted more attention to be used in micro/nano electronic andelectromechanic systems. In this work, thermal evaporation method has been usedto produce CuAlNi shape memory alloy thin film. The produced CuAlNi thin filmhas been characterized and the presence of the martensite phase wasinvestigated and compared with the CuAlNi alloy sample. CuAlNi shape memoryalloy thin...

  17. Magnetovolume effects and magnetic transitions in the invar systems Fe65Ni35 and Er2Fe14B at high hydrostatic pressure

    International Nuclear Information System (INIS)

    Sidorov, V.A.; Khvostantsev, L.G.

    1994-01-01

    The relative volume change and the initial ac-susceptibility have been measured for Fe 65 Ni 35 and Er 2 Fe 14 B under hydrostatic pressure up to 8.5 GPa at room temperature. The bulk modulus of Fe 65 Ni 35 begins to rise and the susceptibility begins to drop at 3.5-4 GPa, indicating the continuous disappearance of ferromagnetism at high pressure. The transition from ferromagnetic to paramagnetic state in Er 2 Fe 14 B at 5.7 GPa is more abrupt and the giant (order of magnitude) softening of the bulk modulus is observed before this transition. The spin reorientation (SR) transition in Er 2 Fe 14 B shifts under pressure to lower temperatures (dT SR /dP = -19 K/GPa). (orig.)

  18. FY 1997 survey report on information sharing product life-cycle systems. 2; 1997 nendo joho kyoyugata product life cycle system ni kansuru chosa hokokusho. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    Highly value-added products considering a total life-cycle of products by integrating both production and consumption activities are much in demand, and each information corresponding to each product should be realized by concept integrating both information and product as common element. Survey was made on what a social system integrating production and consumption should be, a product information model, and technology integrating both information and product for raw material, industrial machine and household appliance as examples. An information model shared by the whole production and consumption activities was first prepared. Based on this model, data storage, update, retrieval and dispatch technologies were surveyed and developed for life-cycle systems. Degradation and life sensing technology was surveyed for maintenance, repair and disposal activities using proper unstable information of each product. A support system for use of shared information was developed to promote a new highly value-added function. Total evaluation was made on information sharing product life-cycle systems. 10 refs., 23 figs., 7 tabs.

  19. Survey on university governance system in U.S.A. Case study in Stanford University; Beikoku ni okeru daigaku governance system no chosa. Stanford daigaku no case study

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    In order to provide reference for the university reformation policy of Japan, the features and strength of the U.S. university management and operation systems were put into order and analyzed through a case study in Stamford University in the United States. In the U.S. research universities, it is not only how high the quality is in the faculties and researchers, but also how far the structuring has been advanced in the systems to manage and operate them efficiently, which supports the infrastructures of research activities. The 'research management and operation staff' is knowledgeable in the system to manage the inside of a university and the system to procure research funds from the government and foundations. The staff enhances the productivity of research activities by professionally handling various operations taking place in research laboratories. In association with increase of the size of research projects, those who have been experienced in industries, or those who have acquired the doctor's degree exist in a large number in the projects as the research management staff. In Japanese universities, management staff posts with high specialty to undertake the research management do not exist. This facts results in young researchers consuming a great amount of time for this work. (NEDO)

  20. Investigation of the simulation for the solar DHW system by TRNSYS; TRNSYS ni yoru kaihogata tank wo mochiita solar kyuto system no simulation chosa

    Energy Technology Data Exchange (ETDEWEB)

    Oishi, M; Noguchi, T [Japan Quality Assurance Organization, Tokyo (Japan); Okumiya, M [Nagoya University, Nagoya (Japan)

    1997-11-25

    With an objective of establishing a method for evaluating performance of a photovoltaic hot water supply system, a discussion was given on utilization of the simulation program, TRANSYS. The discussion was addressed on a photovoltaic hot water supply system of forcible circulation type using commercially available open-type heat storage tanks. An experiment was performed as an indoor test using an artificial solar light source. The TRANSYS makes available a type 04 which handles each node as a complete mixture by fixing and dividing the heat storage tank, and a type 38 which expresses heat transfer between temperature layers by means of piston flow as a heat transfer coefficient. Both types were subjected to calculation. The result of the discussion may be summarized as follows: both types provided values close to the experimental values of quantity of heat derived by utilizing solar heat; however, with the type 04, heat transfer cannot be modeled if the system is left still with temperature difference in the heat storage tank being large; and with the type 38, modeling is possible when the system is left still with temperature difference in the heat storage tank being large, but temperature gradient is difficult to be modeled during heat collection and when hot water is supplied. 1 ref., 7 figs., 5 tabs.

  1. Report on a feasibility survey of the cold accumulated heat use energy system in Hokkaido; Hokkaido ni okeru reichikunetsu riyo energy system no kanosei chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    A survey was conducted of various systems which use in summer cold heat from the snow stored in winter. A model of the cold accumulated heat system of the type which has a high possibility of the introduction was built to study a possibility of the realization. Types of the model system were selected assuming the utilization of cold heat energy of snow in Sapporo, a typical large city in the cold heavy-snow area. Studies were made on each model of urban type commercial facilities, urban type offices, suburban type shopping center, and suburban type hospitals. For each model, more than one systems were studied according to types and forms of the storage tank, and heat recovery methods. As a result, it was found that cold heat energy of snow can be utilized almost effectively by making an appropriate study of the energy balance like the possible supply of cold heat exceeded the demand in two models of an urban type office building and an suburban type hospital. Further, operating expenses of typical models were roughly calculated. 51 figs., 20 figs.

  2. Adoption of CO2 laser cutting system for bridge factory. Kyoryo kojo ni okeru CO2 laser setsudan system no tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Hata, A.; Ogaya, S.; Tamaoki, N. (NKK Corp., Tokyo (Japan))

    1994-05-01

    This paper describes a cutting process structured for an objective of accuracy improvement and high-speed automation of cutting processes for thin sheet steels used for bridge building. Objects of the cutting process are such thin sheet steels as lateral ribs (with a thickness of about 9 mm to 14 mm) with complex shapes and a large number of edges to be cut. The process lines consist of two lines for large member and small member cutting. The paper details the numerical controls including the chart system, 'BRISTLAN' that has been developed previously, a CAM information preparing system, and a C