WorldWideScience

Sample records for technologically feasible mechanism

  1. Feasibility studies and technological innovation

    DEFF Research Database (Denmark)

    2004-01-01

    The chapter offers a tool to conduct feasibility studies and focuses on how to make feasibility studies in a situation with environmental concerns, in which technological innovation and institutional chnages are among the objectives.......The chapter offers a tool to conduct feasibility studies and focuses on how to make feasibility studies in a situation with environmental concerns, in which technological innovation and institutional chnages are among the objectives....

  2. Feasibility studies and technological innovation

    DEFF Research Database (Denmark)

    2004-01-01

    The chapter offers a tool to conduct feasibility studies and focuses on how to make feasibility studies in a situation with environmental concerns, in which technological innovation and institutional chnages are among the objectives.......The chapter offers a tool to conduct feasibility studies and focuses on how to make feasibility studies in a situation with environmental concerns, in which technological innovation and institutional chnages are among the objectives....

  3. Conceptual Thermal Treatment Technologies Feasibility Study

    Energy Technology Data Exchange (ETDEWEB)

    Suer, A.

    1996-02-28

    This report presents a conceptual Thermal Treatment Technologies Feasibility Study (FS) for the Savannah River Site (SRS) focusing exclusively on thermal treatment technologies for contaminated soil, sediment, or sludge remediation projects.

  4. Feasibility of using LODOX technology for mammography

    Science.gov (United States)

    Lease, Alyson; Vaughan, Christopher; Beningfield, Stephan; Potgieter, Herman; Booysen, Andre

    2002-05-01

    The LODOX (Low Dose X-ray) Scanner, created by De Beers, is currently being clinically tested at the Trauma Unit of Groote Schuur Hospital and the University of Cape Town in South Africa. High quality images with exceedingly low radiation suggest that the technology may also be used to identify breast cancer lesions and microcalcifications. The measured LODOX modulation transfer function averages 6 percent at 10 cycles per millimeter, while the detected quantum efficiency is approximately 25 percent at 1 cycle per millimeter. The mean glandular doses calculated for a breast thickness of 4 cm at various intensities -- ranging from 0.022 rad at 70mAs to 0.043 rad at 125mAs -- were approximately 10 times less than the value designated by the American College of Radiology (0.3 rad per breast image). At 40kV, LODOX exhibits an average half value layer of 1.59 mm of Al (compared to 0.3 to 0.4 mm recommended for mammography), illustrating the unfavorable higher penetration of LODOX X-rays. The extremely low radiation dose delivered by the LODOX suggests that the technology would be feasible for detecting and diagnosing cancers in the sensitive tissue of the breast, once adjustments to X-ray range and beam hardness had been accomplished.

  5. Feasibility study on the development of advanced LWR fuel technology

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Youn Ho; Sohn, D. S.; Jeong, Y. H.; Song, K. W.; Song, K. N.; Chun, T. H.; Bang, J. G.; Bae, K. K.; Kim, D. H. and others

    1997-07-01

    Worldwide R and D trends related to core technology of LWR fuels and status of patents have been surveyed for the feasibility study. In addition, various fuel cycle schemes have been studied to establish the target performance parameters. For the development of cladding material, establishment of long-term research plan for alloy development and optimization of melting process and manufacturing technology were conducted. A work which could characterize the effect of sintering additives on the microstructure of UO{sub 2} pellet has been experimentally undertaken, and major sintering variables and their ranges have been found in the sintering process of UO{sub 2}-Gd{sub 2}O{sub 3} burnable absorber pellet. The analysis of state of the art technology related to flow mixing device for spacer grid and debris filtering device for bottom nozzle and the investigation of the physical phenomena related to CHF enhancement and the establishment of the data base for thermal-hydraulic performance tests has been done in this study. In addition, survey on the documents of the up-to-date PWR fuel assemblies developed by foreign vendors have been carried out to understand their R and D trends and establish the direction of R and D for these structural components. And, to set the performance target of the new fuel, to be developed, fuel burnup and economy under the extended fuel cycle length scheme were estimated. A preliminary study on the failure mechanism of CANDU fuel, key technology and advanced coating has been performed. (author). 190 refs., 31 tabs., 129 figs.

  6. Evaluating the Feasibility of Using Remote Technology for Cochlear Implants

    Science.gov (United States)

    Goehring, Jenny L.; Hughes, Michelle L.; Baudhuin, Jacquelyn L.

    2012-01-01

    The use of remote technology to provide cochlear implant services has gained popularity in recent years. This article contains a review of research evaluating the feasibility of remote service delivery for recipients of cochlear implants. To date, published studies have determined that speech-processor programming levels and other objective tests…

  7. Vulnerabilities in GSM technology and feasibility of selected attacks

    Science.gov (United States)

    Voznak, M.; Prokes, M.; Sevcik, L.; Frnda, J.; Toral-Cruz, Homer; Jakovlev, Sergej; Fazio, Peppino; Mehic, M.; Mikulec, M.

    2015-05-01

    Global System for Mobile communication (GSM) is the most widespread technology for mobile communications in the world and serving over 7 billion users. Since first publication of system documentation there has been notified a potential safety problem's occurrence. Selected types of attacks, based on the analysis of the technical feasibility and the degree of risk of these weaknesses, were implemented and demonstrated in laboratory of the VSB-Technical University of Ostrava, Czech Republic. These vulnerabilities were analyzed and afterwards possible attacks were described. These attacks were implemented using open-source tools, software programmable radio USRP (Universal Software RadioPeripheral) and DVB-T (Digital Video Broadcasting - Terrestrial) receiver. GSM security architecture is being scrutinized since first public releases of its specification mainly pointing out weaknesses in authentication and ciphering mechanisms. This contribution also summarizes practically proofed and used scenarios that are performed using opensource software tools and variety of scripts mostly written in Python. Main goal of this paper is in analyzing security issues in GSM network and practical demonstration of selected attacks.

  8. A feasibility study for a manufacturing technology deployment center

    Energy Technology Data Exchange (ETDEWEB)

    1994-10-31

    The Automation & Robotics Research Institute (ARRI) and the Texas Engineering Extension Service (TEEX) were funded by the U.S. Department of Energy to determine the feasibility of a regional industrial technology institute to be located at the Superconducting Super Collider (SSC) Central Facility in Waxahachie, Texas. In response to this opportunity, ARRI and TEEX teamed with the DOE Kansas City Plant (managed by Allied Signal, Inc.), Los Alamos National Laboratory (managed by the University of California), Vought Aircraft Company, National Center for Manufacturing Sciences (NCMS), SSC Laboratory, KPMG Peat Marwick, Dallas County Community College, Navarro Community College, Texas Department of Commerce (TDOC), Texas Manufacturing Assistance Center (TMAC), Oklahoma Center for the Advancement of Science and Technology, Arkansas Science and Technology Authority, Louisiana Productivity Center, and the NASA Mid-Continent Technology Transfer Center (MCTTC) to develop a series of options, perform the feasibility analysis and secure industrial reviews of the selected concepts. The final report for this study is presented in three sections: Executive Summary, Business Plan, and Technical Plan. The results from the analysis of the proposed concept support the recommendation of creating a regional technology alliance formed by the states of Texas, New Mexico, Oklahoma, Arkansas and Louisiana through the conversion of the SSC Central facility into a Manufacturing Technology Deployment Center (MTDC).

  9. FEASIBILITY STUDY OF PRESSURE PULSING PIPELINE UNPLUGGING TECHNOLOGIES FOR HANFORD

    Energy Technology Data Exchange (ETDEWEB)

    Servin, M. A. [Washington River Protection Solutions, LLC, Richland, WA (United States); Garfield, J. S. [AEM Consulting, LLC (United States); Golcar, G. R. [AEM Consulting, LLC (United States)

    2012-12-20

    The ability to unplug key waste transfer routes is generally essential for successful tank farms operations. All transfer lines run the risk of plugging but the cross site transfer line poses increased risk due to its longer length. The loss of a transfer route needed to support the waste feed delivery mission impacts the cost and schedule of the Hanford clean up mission. This report addresses the engineering feasibility for two pressure pulse technologies, which are similar in concept, for pipeline unplugging.

  10. Mechanics for materials and technologies

    CERN Document Server

    Goldstein, Robert; Murashkin, Evgenii

    2017-01-01

    This book shows impressively how complex mathematical modeling of materials can be applied to technological problems. Top-class researchers present the theoretical approaches in modern mechanics and apply them to real-world problems in solid mechanics, creep, plasticity, fracture, impact, and friction. They show how they can be applied to technological challenges in various fields like aerospace technology, biological sciences and modern engineering materials.

  11. Material Identification Technology (MIT) concept technical feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    Jones, J.L.; Harker, Y.D.; Yoon, W.Y.; Johnson, L.O.

    1993-09-01

    The Idaho National Engineering Laboratory (INEL) has initiated the design and development of a novel pulsed accelerator-based, active interrogation concept. The proposed concept, referred to as the Material Identification Technology (MIT), enables rapid (between accelerator pulses), non-destructive, elemental composition analysis of both nuclear and non-nuclear materials. Applications of this technique include material monitoring in support of counter-proliferation activities, such as export controls (at domestic and international inspection locations), SNM controls, nuclear weapon dismantlement, and chemical weapon verification. Material Identification Technology combines a pulsed, X-ray source (an electron accelerator) and a gamma detection system. The accelerator must maximize neutron production (pulse width, beam current, beam energy, and repetition rate) and minimize photon dose to the object. Current available accelerator technology can meet these requirements. The detection system must include detectors which provide adequate gamma energy resolution capability, rapid recovery after the initial X-ray interrogation pulse, and multiple single gamma event detection between accelerator pulses. Further research is required to develop the detection system. This report provides the initial feasibility assessment of the MIT concept.

  12. Feasibility

    NARCIS (Netherlands)

    Bokdam, J.; Braeckel, van A.

    2002-01-01

    Extensive livestock farming, including hay making, seems the most feasible management strategy for open peatland. In the longer term, wilderness grazing may become more feasible. The loss of economic viability of traditional livestock farming and related haymaking may be reversed by innovation of

  13. Feasibility

    NARCIS (Netherlands)

    Bokdam, J.; Braeckel, van A.

    2002-01-01

    Extensive livestock farming, including hay making, seems the most feasible management strategy for open peatland. In the longer term, wilderness grazing may become more feasible. The loss of economic viability of traditional livestock farming and related haymaking may be reversed by innovation of ne

  14. Feasibility evaluation of downhole oil/water separator (DOWS) technology.

    Energy Technology Data Exchange (ETDEWEB)

    Veil, J. A.; Langhus, B. G.; Belieu, S.

    1999-01-31

    transferred to operators, particularly to small or medium-sized independent U.S. companies. One of the missions of the U.S. Department of Energy's (DOE's) National Petroleum Technology Office (NPTO) is to assess the feasibility of promising oil and gas technologies that offer improved operating performance, reduced operating costs, or greater environmental protection. To further this mission, the NPTO provided funding to a partnership of three organizations a DOE national laboratory (Argonne National Laboratory), a private-sector consulting firm (CH2M-Hill), and a state government agency (Nebraska Oil and Gas Conservation Commission) to assess the feasibility of DOWS. The purpose of this report is to provide general information to the industry on DOWS by describing the existing uses of simultaneous injection, summarizing the regulatory implications of simultaneous injection, and assessing the potential future uses of the technology. Chapter 2 provides a more detailed description of the two major types of DOWS. Chapter 3 summarizes the existing U.S. and Canadian installations of DOWS equipment, to the extent that operators have been willing to share their data. Data are provided on the location and geology of existing installations, production information before and after installation of the DOWS, and costs. Chapter 4 provides an overview of DOWS-specific regulatory requirements imposed by some state agencies and discusses the regulatory implications of handling produced water downhole, rather than pumping it to the surface and reinjecting it. Findings and conclusions are presented in Chapter 5 and a list of the references cited in the report is provided in Chapter 6. Appendix A presents detailed data on DOWS installations. This report presents the findings of Phase 1 of the simultaneous injection project, the feasibility assessment. Another activity of the Phase 1 investigation is to design a study plan for Phase 2 of the project, field pilot studies. The Phase 2

  15. R and D for the Feasibility Study of CLIC Technology

    CERN Document Server

    Braun, H; Geschonke, Günther; Guignard, Gilbert; Hübner, K; Wilson, Ian H

    2004-01-01

    An overview is given of the necessary R&D and particularly of the CLIC test facility CTF3 which is presently under construction for demonstrating the key issues related to the CLIC technology and to the two-beam scheme. The results concerning the commissioning of the injector and of the first part of the linac already built are summarized. The main R&D topics to be covered with this test infrastructure are described and the planned road-map in order to reach the pre-defined goals is indicated. The potential of CTF3 for checking the bunch-train recombination, testing RF accelerating structures, investigating the use of a drive-beam for RF power production, for bench-marking simulation codes and possibly making low-energy experiments related to linear collider R&D is presented. The activities required for the feasibility programme planned are given in the form of work packages, together with the needed but not available resources and the time schedule.

  16. Technological, economic, and political feasibility in OSHA's Air Contaminants Standard

    Energy Technology Data Exchange (ETDEWEB)

    Robinson, J.C.; Paxman, D.G. (Univ. of California, Berkeley (USA))

    In 1989, after almost two decades of substance-by-substance standard setting, the Occupational Safety and Health Administration (OSHA) promulgated its Air Contaminants Standard, imposing new exposure limits for 376 toxic substances encountered in U.S. industry. In marked contrast to earlier regulations, the Air Contaminants Standard has generated relatively little industry opposition. This paper analyzes the standard in the context of the twenty-year debate over the appropriate role for technological feasibility and economic compliance costs in occupational health policy. The political feasibility of the new standard is traced to OSHA's abandonment of technology forcing in favor of reliance on off-the-shelf technologies already in use in major firms. While important as an embodiment of OSHA's new generic approach to regulation, the Air Contaminants Standard cannot serve as a model for future occupational health policy, due to its reliance on informal, closed-door mechanisms for establishing regulatory priorities and permissible exposure limits. 20 refs.

  17. Feasibility of Jujube peeling using novel infrared radiation heating technology

    Science.gov (United States)

    Infrared (IR) radiation heating has a promising potential to be used as a sustainable and effective method to eliminate the use of water and chemicals in the jujube-peeling process and enhance the quality of peeled products. The objective of this study was to investigate the feasibility of use IR he...

  18. 76 FR 12944 - Children's Products Containing Lead; Technological Feasibility of 100 ppm for Lead Content...

    Science.gov (United States)

    2011-03-09

    ... of January 26, 2011 (76 FR 4641), we published a notice (``hearing notice'') announcing that the... COMMISSION Children's Products Containing Lead; Technological Feasibility of 100 ppm for Lead Content; Notice... feasibility of meeting the 100 ppm lead content limit for children's products and associated public...

  19. Feasibility Study of Integrating IDELIX’s Pliable Display Technology into the COPlanS Technology Demonstration Software

    Science.gov (United States)

    2005-03-31

    Feasibility Study of Integrating IDELIX’s Pliable Display Technology into the COPlanS Technology Demonstration Software Issue Number: Version 1... Technology Demonstration Software 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f...Collaborative Operations Planning System (COPlanS) technology demonstration software in the areas of collaboration and data visualization using IDELIX’s Pliable

  20. Proof of feasibility of the through casing resistivity technology

    Energy Technology Data Exchange (ETDEWEB)

    Vail, Dr. W. Banning; Momii, Steven T.

    2000-06-21

    This project is to definitely prove that the resistivity of geological formations can be measured from within cased wells and to license the relevant patents and technology to major wireline service companies.

  1. Technological Feasibility of a Nursing Clinical Information System

    Science.gov (United States)

    Jeddi, Fatemeh Rangraz; Hajbaghery, Mohsen Adib; Akbari, Hossein; Esmaili, Soheila

    2016-01-01

    Introduction A successful implementation of an information system is impossible without sufficient knowledge of available technical resources of an institute. The aim of this study was to determine technical feasibility of a nursing clinical information system (NCIS) in Mazandaran province, Iran, 2015. Methods This cross-sectional study was conducted in three steps. In the first step, a data gathering tool was developed through an unsystematic literature review. In the second step, a questionnaire was developed and validity of the tool was confirmed by receiving opinions of faculty members and calculating indices of Content Validity Index (CVI) and Content Validity Ratio (CVR). The questionnaire reliability was confirmed by calculating Cronbach’s alpha coefficient (α= 0.72). In the third step, the feasibility of implementation of NCIS was evaluated by forming a panel of IT experts (n= 30), and through a questionnaire. Data were collected by 5-point Likert scale, very low to very high (scoring 1–5). Scores of each item were calculated and score percentage was determined. Chi-square and Fisher Exact tests were used. Results Maximum possibility of implementing NCIS were in the hardware area, additional equipment (92.6%), in the area of software, financial software (99.4%), in the area of network equipment, the possibility of integration with other internal systems, (92.6%) and in the area of network security, the possibility of backup version for security purposes (97.4%). Type of employment was statistically significant according to IT experts’ opinions (p= 0.014) Conclusion Hardware and software infrastructures for implementation of NCIS were desirable. The provision of more portable computers, advanced equipment such as barcode scanner, Radio-frequency identification (RFID), some approaches for increase accessibility of the system and essential databases from other resources and also increase of network lines’ speed are necessary. PMID:27790348

  2. International Conference on Mechanical Engineering and Technology

    CERN Document Server

    Mechanical Engineering and Technology

    2012-01-01

    The volume includes a set of selected papers extended and revised from the 2011 International Conference on Mechanical Engineering and Technology, held on London, UK, November 24-25, 2011.   Mechanical engineering technology is the application of physical principles and current technological developments to the creation of useful machinery and operation design. Technologies such as solid models may be used as the basis for finite element analysis (FEA) and / or computational fluid dynamics (CFD) of the design. Through the application of computer-aided manufacturing (CAM), the models may also be used directly by software to create "instructions" for the manufacture of objects represented by the models, through computer numerically controlled (CNC) machining or other automated processes, without the need for intermediate drawings.   This volume covers the subject areas of mechanical engineering and technology, and also covers interdisciplinary subject areas of computers, communications, control and automation...

  3. Process and Economic Feasibility of Using Composting Technology to Treat Waste Nitrocellulose Fines

    Science.gov (United States)

    1991-03-31

    Clasification ) | NPROCESS AVND ECONOMIC FEASIBILITY OF USING COMPOSTING TECHNOLOGY TO TREAT WASTE NITROCELI,.JLOSE PINES . PERSONAL. AUT-1e)R(S) .. C...tons of high protein horse feed, 254 tons of sawdust, 1414 tons of sewage sludge, and 300 tons of alfalfa. The compost retention time required to destroy...operative. (b) High- protein horse feed, $240/ton quoted from same source as I alfalfa above. Composting Technology to U.S. Army Treat Waste NC Fines 3-19

  4. Creativity mechanism in technology development

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, M.R.

    1986-01-01

    By training and experience in engineering I am able to converse in a few technical areas such as control systems and microprocessors. Today the subject is people and my only claim to credibility is as a person in the technical work force, enlightened by a certain amount of enthusiasm, observation and study. The subject is as important as it is interesting, and is literally the key to our collective future. I want to explore the mechanism of human innovation - the creative process. I will discuss the complementary roles of man and machines to provide a perspective of where man can function best. The mechanism we call the human mind is then briefly described. But the main thrust is a summary of the identifiable steps in the human creative process. Finally, I conclude with a statement on the evolution of ideas and offer suggestions on providing a supportive environment.

  5. Entrepreneurial awareness and skills in mechanical technology ...

    African Journals Online (AJOL)

    ... in mechanical technology among technical education students in Tai Solarin University of Education. ... Journal Home > Vol 9, No 1 (2017) > ... The study applauded the management of the University for providing an enabling environment ...

  6. Feasibility Study for the Establishment of a Pharmacy Technology Program. Volume 11, Number 8.

    Science.gov (United States)

    Bourke, Patricia G.; And Others

    In December 1980, a study was conducted by William Rainey Harper College (WRHC) to determine the feasibility of establishing a pharmacy technology program. Professional Life Science and Human Services staff members telephoned 13 hospital pharmacies and four retail pharmacies in WRHC's service area. It was felt that if the 15 responding pharmacies…

  7. Determining the feasibility of objective adherence measurement with blister packaging smart technology

    NARCIS (Netherlands)

    Onzenoort, H.A. van; Neef, C.; Verberk, W.W.; Iperen, H.P. van; Leeuw, P.W. de; Kuy, P.H. van der

    2012-01-01

    PURPOSE: The results of a feasibility study of blister-pack smart technology for monitoring medication adherence are reported. METHODS: Research in the area of objective therapy compliance measurement has led to the development of microprocessor-driven systems that record the time a unit dose is

  8. Determining the feasibility of objective adherence measurement with blister packaging smart technology

    NARCIS (Netherlands)

    Onzenoort, H.A. van; Neef, C.; Verberk, W.W.; Iperen, H.P. van; Leeuw, P.W. de; Kuy, P.H. van der

    2012-01-01

    PURPOSE: The results of a feasibility study of blister-pack smart technology for monitoring medication adherence are reported. METHODS: Research in the area of objective therapy compliance measurement has led to the development of microprocessor-driven systems that record the time a unit dose is rem

  9. Feasibility Study of Analogue and Digital Temperature Sensors in Nanoscale CMOS Technologies

    NARCIS (Netherlands)

    Geljon, M.; Sill, F.; De Lima Monteiro, D.W.

    2009-01-01

    The downscaling of CMOS technology gives rise to a myriad of nanoscale effects. At the same time, power density and thus heat generation increases. The aim of this paper is to evaluate the feasibility of both analogue and digital temperature sensors in nanoscale CMOS using the Berkeley Predictive Te

  10. Tailored interventions to promote Active Ageing using mobile technology: a feasibility study

    NARCIS (Netherlands)

    Cabrita, M.; Melenk, J.; El Menshawy, N.; Tabak, Monique; Vollenbroek-Hutten, Miriam Marie Rosé

    2016-01-01

    Introduction: Mobile technologies facilitate innovative and ubiquitous interventions to promote Active Ageing in daily life. To ensure adoption, such interventions must be designed in co-operation with older adults. This work presents the results of a feasibility study of a system that monitors

  11. Short Message Service (SMS) Technology in Alcohol Research-A Feasibility Study

    NARCIS (Netherlands)

    Kuntsche, E.N.; Robert, B.

    2009-01-01

    Aim: The aim of this study was to describe the feasibility, advantages and limitations of the combined use of Internet and SMS technology to assess alcohol use, and to test whether an SMS sent in the evening (i.e. prior to a possible drinking event) changed the respondents' assessment, made on the

  12. Tailored interventions to promote Active Ageing using mobile technology: a feasibility study

    NARCIS (Netherlands)

    Cabrita, M.; Melenk, J.; El Menshawy, N.; Tabak, M.; Vollenbroek-Hutten, M.

    2016-01-01

    Introduction: Mobile technologies facilitate innovative and ubiquitous interventions to promote Active Ageing in daily life. To ensure adoption, such interventions must be designed in co-operation with older adults. This work presents the results of a feasibility study of a system that monitors phys

  13. Short Message Service (SMS) Technology in Alcohol Research-A Feasibility Study

    NARCIS (Netherlands)

    Kuntsche, E.N.; Robert, B.

    2009-01-01

    Aim: The aim of this study was to describe the feasibility, advantages and limitations of the combined use of Internet and SMS technology to assess alcohol use, and to test whether an SMS sent in the evening (i.e. prior to a possible drinking event) changed the respondents' assessment, made on the f

  14. 75 FR 43942 - Children's Products Containing Lead; Technological Feasibility of 100 ppm for Lead Content...

    Science.gov (United States)

    2010-07-27

    ... COMMISSION Children's Products Containing Lead; Technological Feasibility of 100 ppm for Lead Content... content limit for children's products. DATES: Written comments and submissions in response to this notice... for children 12 years old and younger, the total lead content limit by weight in any part of...

  15. Mechanical technology for higher engineering technicians

    CERN Document Server

    Black, Peter

    1972-01-01

    Mechanical Technology for Higher Engineering Technicians deals with the mechanics of machines, thermodynamics, and mechanics of fluids. This book presents discussions and examples that deal with the strength of materials, technology of machines, and techniques used by professional engineers. The book explains the strain energy of torsion, coil springs, and the effects of axial load. The author also discusses the forces that produce bending, shearing, and bending combined with direct stress, as well as beams subjected to a uniform bending moment or simply supported beams with concentrated non-c

  16. Department of Energy Small-Scale Hydropower Program: Feasibility assessment and technology development summary report

    Energy Technology Data Exchange (ETDEWEB)

    Rinehart, B.N.

    1991-06-01

    This report summarizes two subprograms under the US Department of Energy's Small-Scale Hydroelectric Power Program. These subprograms were part of the financial assistance activities and included the Program Research and Development Announcement (PRDA) feasibility assessments and the technology development projects. The other major subprograms included engineering research and development, legal and institutional aspects, and technology transfer. These other subprograms are covered in their respective summary reports. The problems of energy availability and increasing costs of energy led to a national effort to develop economical and environmental attractive alternative energy resources. One such alternative involved the utilization of existing dams with hydraulic heads of <65 ft and the capacity to generate hydroelectric power of 15 MW or less. Thus, the PRDA program was initiated along with the Technology Development program. The purpose of the PRDA feasibility studies was to encourage development of renewable hydroelectric resources by providing engineering, economic, environmental, safety, and institutional information. Fifty-five feasibility studies were completed under the PRDA. This report briefly summarizes each of those projects. Many of the PRDA projects went on to become technology development projects. 56 refs., 1 fig., 2 tabs.

  17. The Kyoto mechanisms and technological innovation

    DEFF Research Database (Denmark)

    Lund, Henrik

    2006-01-01

    Climate change response, including the implementation of the Kyoto targets as the first step, calls for technological innovation of future sustainable energy systems. Based on the Danish case, this paper evaluates the type of technological change necessary. During a period of 30 years, Denmark...... managed to stabilize primary energy supply, and CO2 emissions decreased by 10%, during a period of 20 years. However, after the introduction of the Kyoto Mechanisms, Denmark has changed its strategy. Instead of continuing the domestic CO2 emission controls, Denmark plans to buy CO2 reductions in other...... countries. Consequently, the innovative technological development has changed. This paper evaluates the character of such change and makes preliminary recommendations for policies to encourage the use of the Kyoto Mechanisms as an acceleration of the necessary technological innovation....

  18. The Kyoto Mechanisms and Technological Innovation

    DEFF Research Database (Denmark)

    Lund, Henrik

    2003-01-01

    Climate change response, including implementation of the Kyoto targets as the first step, calls for technological innovation of future sustainable energy systems. One of the important agreements in several declarations, including the Kyoto protocol, has been to promote and coordinate...... the collaboration between the countries in the necessary technological development. The paper encourage that the Kyoto mechanisms will be used for acceleration of the necessary technical innovation in Denmark....

  19. The feasibility of a unified role for NASA regional dissemination centers and technology application teams

    Science.gov (United States)

    1974-01-01

    Insights and recommendations arising from a study of the feasibility of combining the NASA Regional Dissemination Center (RDC) and Technology Application Team (Tateam) roles to form Regional Application Centers (RADC's) are presented. The apparent convergence of the functions of RDC's and Tateams is demonstrated and strongly supportive of the primary recommendation that an applications function be added to those already being performed by the RDC's. The basis of a national network for technology transfer and public and private sector problem solving is shown to exist, the skeleton of which is an interactive network of Regional Application Centers and NASA Field Centers. The feasibility of developing and extending this network is considered and the detailed ramifications of so doing are discussed and the imperatives emphasized. It is hypothesized that such a national network could become relatively independent of NASA funding within five years.

  20. Exploring healthy eating among ethnic minority students using mobile technology: Feasibility and adherence.

    Science.gov (United States)

    Rodgers, Rachel F; Franko, Debra L; Shiyko, Mariya; Intille, Stephen; Wilson, Kelcey; O'Carroll, Dympna; Lovering, Meghan; Matsumoto, Atsushi; Iannuccilli, Alyssa; Luk, Stephanie; Shoemaker, Helen

    2016-09-01

    Interventions aiming to help ethnically diverse emerging adults engage in healthy eating have had limited success. The aim of this study was to assess the feasibility of and adherence to an intervention capitalizing on mobile technology to improve healthy eating. Participants created an online photo food journal and received motivational text messages three times a day. Satisfaction with the intervention was assessed, as were control variables including depression and body dissatisfaction. In addition, weight and height were measured. Levels of adherence to the photo food journal were high with approximately two photos posted a day at baseline. However, adherence rates decreased over the course of the study. Body dissatisfaction positively predicted adherence, while body mass index negatively predicted study satisfaction. Mobile technology provides innovative avenues for healthy eating interventions. Such interventions appear acceptable and feasible for a short period; however, more work is required to evaluate their viability regarding long-term engagement.

  1. Feasibility assessment of anaerobic digestion technologies for household wastes in Vietnam

    OpenAIRE

    Rodolfo, Daniel Silva; Le, Huang Anh; Koch, Konrad

    2017-01-01

    Anaerobic digestion technologies have been utilized in Vietnam for more than 30 years with thousands of domestic small scale plants, mostly for agricultural and livestock wastes. For municipal solid waste (MSW) the development of biogas plants is far below the current high waste generation rates. The aim of this paper is to present the results of a feasibility assessment of implementing AD to treat the organic fraction of municipal solid waste (OFMSW) in Vietnam. For this purpose, an environm...

  2. Feasibility Analysis of a Type of Soft Firing Technology with Pneumatic Transmission

    Institute of Scientific and Technical Information of China (English)

    YANG Jun-rong; MI Liang-chuan; ZHAO Hua

    2006-01-01

    Aimed at solving the conflict between the requirements of reducing gun recoil and increasing muzzle velocity, a new type of soft firing technology with pneumatic transmission is put forward. By mathematical model and instance simulation, the feasibility analysis of this technique is made. The result shows that the soft firing technology with pneumatic transmission can reduce the maximum pressure on the breechblock by 27 % and increase the muzzle velocity by 20 %. The proposed new approach has the significance to the compatibility of power and flexibility.

  3. Governance Mechanisms in Information Technology Outsourcing

    Science.gov (United States)

    Ravindran, Kiron

    2010-01-01

    While the dominance of Information Technology Outsourcing (ITO) as a sourcing strategy would seem to indicate successful and well-informed practice, frequent examples of unraveled engagements highlight the associated risks. Successful instances of outsourcing suggest that governance mechanisms effectively manage the related risks. This…

  4. Governance Mechanisms in Information Technology Outsourcing

    Science.gov (United States)

    Ravindran, Kiron

    2010-01-01

    While the dominance of Information Technology Outsourcing (ITO) as a sourcing strategy would seem to indicate successful and well-informed practice, frequent examples of unraveled engagements highlight the associated risks. Successful instances of outsourcing suggest that governance mechanisms effectively manage the related risks. This…

  5. Quantum Mechanics Fundamentals and Applications to Technology

    CERN Document Server

    Singh, Jasprit

    1996-01-01

    Explore the relationship between quantum mechanics and information-age applications. This volume takes an altogether unique approach to quantum mechanics. Providing an in-depth exposition of quantum mechanics fundamentals, it shows how these concepts are applied to most of today's information technologies, whether they are electronic devices or materials. No other text makes this critical, essential leap from theory to real-world applications. The book's lively discussion of the mathematics involved fits right in with contemporary multidisciplinary trends in education: Once the basic formulati

  6. Accessing best practice resources using mobile technology in an undergraduate nursing program: a feasibility study.

    Science.gov (United States)

    Mann, Elizabeth G; Medves, Jennifer; Vandenkerkhof, Elizabeth G

    2015-03-01

    Mobile technology presents new opportunities for nursing education and ultimately the provision of nursing care. The aim of this study was to explore the utility of mobile technology in undergraduate nursing education. In this evaluation study, undergraduate nursing students were provided with iPod Touch devices containing best practice guidelines. Computer self-efficacy was assessed, and the Theory of Planned Behavior was used to identify potential predictors of the use of mobile technology. Questionnaires were completed at baseline (n = 33) and postimplementation (n = 23). Feedback on feasibility issues was recorded throughout the study period. Students generally found the devices useful, and few technical problems were identified; however, lack of skill in using the devices and lack of support from staff in the clinical setting were commonly identified issues. Self-efficacy scores were high throughout the study. Attitudes, perceptions of the desirability of use, perceived personal control over use, and intentions of using the device were lower postimplementation than at baseline. Attitude toward the technology predicted intention to use the device after graduation. Mobile technology may promote evidence-informed practice; however, supporting students' acquisition of related skills may optimize use. Successful integration of mobile technology into practice requires attention to factors that affect student attitudes.

  7. Feasibility Study of Cargo Airship Transportation Systems Powered by New Green Energy Technologies

    Science.gov (United States)

    Skuza, Jonathan R.; Park, Yeonjoon; Kim, Hyun Jung; Seaman, Shane T.; King, Glen C.; Choi, Sang H.; Song, Kyo D.; Yoon, Hargsoon; Lee, Kunik

    2014-01-01

    The development of transportation systems that use new and sustainable energy technologies is of utmost importance due to the possible future shortfalls that current transportation modes will encounter because of increased volume and costs. The introduction and further research and development of new transportation and energy systems by materials researchers at the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) and the Department of Transportation are discussed in this Technical Memorandum. In this preliminary study, airship concepts were assessed for cargo transportation using various green energy technologies capable of 24-hour operation (i.e., night and day). Two prototype airships were successfully constructed and tested at LaRC to demonstrate their feasibility: one with commercially available solar cells for operation during the daytime and one with microwave rectennas (i.e., rectifying antennas) developed in-house for night-time operation. The test results indicate the feasibility of a cargo transportation airship powered by new green energy sources and wireless power technology. Future applications will exploit new green energy sources that use materials and devices recently developed or are in the process of being developed at LaRC. These include quantum well SiGe solar cells; low, mid-, and high temperature thermoelectric modules; and wireless microwave and optical rectenna devices. This study examines the need and development of new energy sources for transportation, including the current status of research, materials, and potential applications.

  8. Idaho Nuclear Technology and Engineering Center Newly Generated Liquid Waste Demonstration Project Feasibility Study

    Energy Technology Data Exchange (ETDEWEB)

    Herbst, A.K.

    2000-02-01

    A research, development, and demonstration project for the grouting of newly generated liquid waste (NGLW) at the Idaho Nuclear Technology and Engineering Center is considered feasible. NGLW is expected from process equipment waste, decontamination waste, analytical laboratory waste, fuel storage basin waste water, and high-level liquid waste evaporator condensate. The potential grouted waste would be classed as mixed low-level waste, stabilized and immobilized to meet RCRA LDR disposal in a grouting process in the CPP-604 facility, and then transported to the state.

  9. DISSS/ET modernization feasibility of adapting existing software and hardware technologies

    Energy Technology Data Exchange (ETDEWEB)

    Strait, R.S.

    1993-09-30

    The Fission Energy and Systems Safety Program (FESSP) at LLNL was funded by the DOE Office of Safeguards and Security to develop an integrated system, hereafter referred to as the Security Clearance Electronic Processing, Transfer, Evaluation, and Recordkeeping (SCEPTER) System, for the electronic collection and transfer of personnel security data between clearance offices at contractor sites and DOE field offices and the Office of Personnel Management(OPM). This system will use existing software and hardware technologies where feasible. The project will consist of three phases. The first phase will investigate user needs, determine the feasibility of using existing technologies, and define project requirements. The second phase will be a pilot project to develop the computer systems and procedures required to automate the security clearance work flow within DOE and between DOE and OPM. Once the pilot system is implemented and tested, the decision to extend the system throughout DOE can be made. This third phase, the extension to a full production system, will require the investment of considerable funds in equipment and in the development of both a computer system and management infrastructure to support its successful operation. This investment will be undertaken only after the pilot system is operational and evaluated.

  10. BWR mechanics and materials technology update

    Energy Technology Data Exchange (ETDEWEB)

    Kiss, E.

    1983-05-01

    This paper discusses technical results obtained from a variety of important programs underway at General Electric's Nuclear Engineering Division. The principal objective of these programs is to qualify and improve BWR product related technologies that fall broadly under the disciplines of Applied Mechanics and Materials Engineering. The paper identifies and deals with current technical issues that are of general importance to the LWR industry albeit the specific focus is directed to the development and qualification of analytical predictive methods and criteria, and improved materials for use in the design of the BWR. In this paper, specific results and accomplishments are summarized to provide a braod perspective of technology advances. Results are presented in sections which discuss: dynamic analysis and modeling; fatigue and fracture evaluation; materials engineering advances; and flow induced vibration.

  11. Feasibility of electro-osmotic belt filter dewatering technology at pilot scale

    CSIR Research Space (South Africa)

    Snyman, HG

    2000-01-01

    Full Text Available -effective dewatering technologies, electro-osmotic belt filtering was developed by Smollen and Kafaar in 1995. The mechanical equipment resembles a belt filter press but the belts are stainless steel, woven belts, which act as the electrodes. In this study...

  12. The feasible strategies of technological and economic development of HIP Petrohemija

    Directory of Open Access Journals (Sweden)

    Adžić Slobodan

    2013-01-01

    Full Text Available In this paper authors have presented a case study of HIP Petrohemija company (Pančevo, Serbia with the aim of generating feasible strategies for technological and economic development. The research philosophy is based on the critical realism, while the research methodology is qualitative. The paper begins with the introduction to the history of HIP Petrohemija, followed by the SWOT (Strengths, Weaknesses, Opportunities, & Threats analysis, and the SWOT analysis results that were used to construct TOWS (Threats, Opportunities, Weaknesses, & Strengths matrix. This procedure generated two feasible strategies, both of which are subjected to further tests. The three portfolio models: Boston Consulting Group (BCG matrix, General Electric (GE matrix, and Nine specimen standardized strategies were used to describe the current situation of HIP Petrohemija, needed steps for the company to produce more finalized products, i.e., polymers, as well as the actions aimed at minimizing losses. This however did not provide sufficient data for determining the appropriate strategy for the company. The dilemma was solved with the help of Ansoff matrix, which showed that merging with, in its value chain, the distributor, not with to the supplier will be more profitable for the HIP Petrohemija. Contemporary Porter’s models - Five Forces and Value Chain Analysis, further confirmed the advantage of this strategy. The last model used in this paper is the Competitors Differentiation Iceberg Model that answers what the core competence of HIP Petrohemija is, with the results indicating the high quality of finalized products. Finally, the authors conclude that both strategies that were generated by the analysis are feasible - the merging with the supplier of raw material, as well as the merging with the large distributor of finalized products, with the latter being more profitable in the case of HIP Petrohemija.

  13. Feasibility of eye-tracking technology to quantify expertise in ultrasound-guided regional anesthesia.

    Science.gov (United States)

    Harrison, T Kyle; Kim, T Edward; Kou, Alex; Shum, Cynthia; Mariano, Edward R; Howard, Steven K

    2016-06-01

    Ultrasound-guided regional anesthesia (UGRA) requires an advanced procedural skill set that incorporates both sonographic knowledge of relevant anatomy as well as technical proficiency in needle manipulation in order to achieve a successful outcome. Understanding how to differentiate a novice from an expert in UGRA using a quantifiable tool may be useful for comparing educational interventions that could improve the rate at which one develops expertise. Exploring the gaze pattern of individuals performing a task has been used to evaluate expertise in many different disciplines, including medicine. However, the use of eye-tracking technology has not been previously applied to UGRA. The purpose of this preliminary study is to establish the feasibility of applying such technology as a measurement tool for comparing procedural expertise in UGRA. eye-tracking data were collected from one expert and one novice utilizing Tobii Glasses 2 while performing a simulated ultrasound-guided thoracic paravertebral block in a gel phantom model. Area of interest fixations were recorded and heat maps of gaze fixations were created. Results suggest a potential application of eye-tracking technology in the assessment of UGRA learning and performance.

  14. Situated learning: The feasibility of an experimental learning of information technology for academic nursing students

    Directory of Open Access Journals (Sweden)

    Ayala Gonen

    2016-12-01

    Full Text Available As part of the Bachelor’s degree of nursing education, nursing students are exposed to the increasingly complex world of Information Technology. Aim: To evaluate the feasibility of a situated learning approach for Information Technology course by assessing students’ perceptions at the end of the course. Methods: Course participants completed a pre and post-course survey describing their knowledge and perceptions of the course. Results and discussion: Results demonstrated increased knowledge and satisfaction with this new learning strategy, which was also apparent in their good final course grades. Students had considerably more knowledge after the course (comparing to pre course survey, with a positive correlation between students’ perception of the usefulness of the course and their knowledge after completion of the course. Therefore, enhancing learning using a simulated learning curriculum may allow students to be more aware of the challenges that nurses face in actual practice, and may provide a more contextualized understanding of the issues relating to Information Technology.

  15. Using Remote Communication Technology in Insulin Pump Training: A Feasibility Study.

    Science.gov (United States)

    Parks, Linda; Kim, Tae Youn

    2015-09-29

    This feasibility study was designed to examine if remote communication technology can be used in the technical training of an insulin pump in adults with diabetes who were familiar with insulin pump therapy. Surveys were emailed to 69 individuals who purchased an insulin pump and had been trained by the manufacturer's diabetes educators. In consultation with providers, participants were given the choice of receiving training in a face-to-face meeting or via remote communication technology. The survey consisted of 27 questions asking participants' characteristics, device proficiency, confidence, and their satisfaction with the insulin pump and the training method. Differences between the 2 groups were examined using bivariate analyses. There were 17 participants in the remote group and 20 participants in the face-to-face group. Participants had a mean age of 40.9 ± 14.3 years, had diabetes for 24.3 ± 13.8 years, and used an insulin pump for 9.8 ± 4.9 years. The participants in both groups were not statistically different in age, diabetes history, years on insulin pump, device proficiency, confidence, or satisfaction with the training method. The remote group reported less graduate-level education (P insulin pump training (P insulin pump therapy. Additional research is required to determine the effectiveness of the remote insulin pump training. © 2015 Diabetes Technology Society.

  16. Reviews on current carbon emission reduction technologies and projects and their feasibilities on ships

    Science.gov (United States)

    Wang, Haibin; Zhou, Peilin; Wang, Zhongcheng

    2017-06-01

    Concern about global climate change is growing, and many projects and researchers are committed to reducing greenhouse gases from all possible sources. International Maritime (IMO) has set a target of 20% CO2 reduction from shipping by 2020 and also presented a series of carbon emission reduction methods, which are known as Energy Efficiency Design Index (EEDI) and Energy Efficiency Operation Indicator (EEOI). Reviews on carbon emission reduction from all industries indicate that, Carbon Capture and Storage (CCS) is an excellent solution to global warming. In this paper, a comprehensive literature review of EEDI and EEOI and CCS is conducted and involves reviewing current policies, introducing common technologies, and considering their feasibilities for marine activities, mainly shipping. Current projects are also presented in this paper, thereby illustrating that carbon emission reduction has been the subject of attention from all over the world. Two case ship studies indicate the economic feasibility of carbon emission reduction and provide a guide for CCS system application and practical installation on ships.

  17. A Technological Innovation to Reduce Prescribing Errors Based on Implementation Intentions: The Acceptability and Feasibility of MyPrescribe.

    Science.gov (United States)

    Keyworth, Chris; Hart, Jo; Thoong, Hong; Ferguson, Jane; Tully, Mary

    2017-08-01

    "If-Then" plans for patient management. Technology, as opposed to other methods of learning (eg, traditional "paper based" learning), was seen as a positive advancement for continued learning. MyPrescribe was perceived as an acceptable and feasible learning tool for changing prescribing practices, with participants suggesting that it would make an important addition to medical prescribers' training in reflective practice. MyPrescribe is a novel theory-based technological innovation that provides the platform for doctors to create personalized implementation intentions. Applying the COM-B model allows for a more detailed understanding of the perceived mechanisms behind prescribing practices and the ways in which interventions aimed at changing professional practice can be implemented.

  18. Feasibility of water purification technology in rural areas of developing countries.

    Science.gov (United States)

    Johnson, Dana M; Hokanson, David R; Zhang, Qiong; Czupinski, Kevin D; Tang, Jinxian

    2008-08-01

    Water scarcity is threatening social and economic growth in rural areas of developing countries. There are potential markets for water purification technologies in these regions. The main focus of this article is to evaluate the social, economic and political feasibilities of providing water purification technologies to rural areas of developing countries. The findings of this research can serve as the basis for private investors interested in entering this market. Four representative regions were selected for the study. Economic, demographic, and environmental variables of each region were collected and analyzed along with domestic markets and political information. Rural areas of the developing world are populated with poor people unable to fulfill the basic needs for clean water and sanitation. These people represent an important group of potential users. Due to economic, social, and political risks in these areas, it is difficult to build a strong case for any business or organization focusing on immediate returns on capital investment. A plausible business strategy would be to approach the water purification market as a corporate responsibility and social investing in the short term. This would allow an organization to be well positioned once the economic ability of individuals, governments, and donor agencies are better aligned.

  19. Study into the feasibility of manufacturing liquid glass using resource-saving technology

    Directory of Open Access Journals (Sweden)

    Mizyuryaev Sergey

    2017-01-01

    Full Text Available The authors’ views on the problem of resource-saving in the production of building materials are outlined, with three main modes of resource-saving indicated: the use of cheap raw materials, a reduction in the production costs, and an increase in the efficiency of the produced materials and products. The research provides information on the production and use of liquid glass in industry, including the construction industry. The theoretical substantiation of the possibility of developing a resource-saving technology for the production of liquid glass for construction purposes is given. The work provides information on promising alternative raw material components - diatomite, natural rock and black ash, industrial waste. Their properties are given as well as the justification of their effective use as raw materials. The method of preparation of the components and their mixtures, the preparation of sodium silicate through roasting, and the identification of the suitability of the obtained product for the manufacture of efficient building materials are described. Conclusions are made in regards to the feasibility of producing liquid glass using resource-saving technology.

  20. Feasibility of Applying Clean Development Mechanism and GHGs Emission Reductions in the Gold Mining Industry: A Case of Thailand

    Science.gov (United States)

    Kittipongvises, Suthirat

    2015-12-01

    There is presently overwhelming scientific consensus that global climate change is indeed occurring, and that human activities are the primary driver. An increasingly resource and carbon constrained world will continue to pose formidable challenges to major industries, including mining. Understanding the implications of climate change mitigation for the mining industry, however, remains limited. This paper presents the results of a feasibility study on the implementation of a clean development mechanism and greenhouse gases (GHGs) emission reductions in the gold mining industry. It draws upon and extends the analysis of a case study conducted on gold mining operations in Thailand. The results from the case study indicated that total GHGs emissions by company A were approximately 36,886 tons carbon dioxide equivalents (tCO2e) per annual gold production capacity that meet the eligibility criteria for small-scaled clean development mechanism (CDM) projects. The electrostatic separation process was found to release the lowest amount of GHGs, whereas comminution (i.e. crushing and grinding) generated the highest GHGs emissions. By scope, the emission from purchased electricity (scope 2) is the most significant source. Opportunities for CDM projects implementation in the gold mining sector can be found in employing energy efficiency measures. Through innovation, some technical efficiency and technological development in gold processing (i.e. high pressure grinding rolls (HPGR), vertical roller mills (VRM), gravity pre-concentration and microwave heating technologies) that have the potential to reduce energy use and also lower carbon footprint of the gold mining were further discussed. The evidence reviews found that HPGR and VRM abatement technologies have shown energy and climate benefits as electricity savings and CO2 reduction of about 8-25.93 kWh/ton ore processed and 1.8-26.66 kgCO2/ton ore processed, respectively. Implications for further research and practice were

  1. Feasibility of Applying Clean Development Mechanism and GHGs Emission Reductions in the Gold Mining Industry: A Case of Thailand

    Directory of Open Access Journals (Sweden)

    Kittipongvises Suthirat

    2015-12-01

    Full Text Available There is presently overwhelming scientific consensus that global climate change is indeed occurring, and that human activities are the primary driver. An increasingly resource and carbon constrained world will continue to pose formidable challenges to major industries, including mining. Understanding the implications of climate change mitigation for the mining industry, however, remains limited. This paper presents the results of a feasibility study on the implementation of a clean development mechanism and greenhouse gases (GHGs emission reductions in the gold mining industry. It draws upon and extends the analysis of a case study conducted on gold mining operations in Thailand. The results from the case study indicated that total GHGs emissions by company A were approximately 36,886 tons carbon dioxide equivalents (tCO2e per annual gold production capacity that meet the eligibility criteria for small-scaled clean development mechanism (CDM projects. The electrostatic separation process was found to release the lowest amount of GHGs, whereas comminution (i.e. crushing and grinding generated the highest GHGs emissions. By scope, the emission from purchased electricity (scope 2 is the most significant source. Opportunities for CDM projects implementation in the gold mining sector can be found in employing energy efficiency measures. Through innovation, some technical efficiency and technological development in gold processing (i.e. high pressure grinding rolls (HPGR, vertical roller mills (VRM, gravity pre-concentration and microwave heating technologies that have the potential to reduce energy use and also lower carbon footprint of the gold mining were further discussed. The evidence reviews found that HPGR and VRM abatement technologies have shown energy and climate benefits as electricity savings and CO2 reduction of about 8-25.93 kWh/ton ore processed and 1.8-26.66 kgCO2/ton ore processed, respectively. Implications for further research and

  2. A TECHNOLOGY ASSESSMENT AND FEASIBILITY EVALUATION OF NATURAL GAS ENERGY FLOW MEASUREMENT ALTERNATIVES

    Energy Technology Data Exchange (ETDEWEB)

    Kendricks A. Behring II; Eric Kelner; Ali Minachi; Cecil R. Sparks; Thomas B. Morrow; Steven J. Svedeman

    1999-01-01

    Deregulation and open access in the natural gas pipeline industry has changed the gas business environment towards greater reliance on local energy flow rate measurement. What was once a large, stable, and well-defined source of natural gas is now a composite from many small suppliers with greatly varying gas compositions. Unfortunately, the traditional approach to energy flow measurement [using a gas chromatograph (GC) for composition assay in conjunction with a flow meter] is only cost effective for large capacity supplies (typically greater than 1 to 30 million scfd). A less costly approach will encourage more widespread use of energy measurement technology. In turn, the US will benefit from tighter gas inventory control, more efficient pipeline and industrial plant operations, and ultimately lower costs to the consumer. An assessment of the state and direction of technology for natural gas energy flow rate measurement is presented. The alternative technologies were ranked according to their potential to dramatically reduce capital and operating and maintenance (O and M) costs, while improving reliability and accuracy. The top-ranked technologies take an unconventional inference approach to the energy measurement problem. Because of that approach, they will not satisfy the fundamental need for composition assay, but have great potential to reduce industry reliance on the GC. Technological feasibility of the inference approach was demonstrated through the successful development of data correlations that relate energy measurement properties (molecular weight, mass-based heating value, standard density, molar ideal gross heating value, standard volumetric heating value, density, and volume-based heating value) to three inferential properties: standard sound speed, carbon dioxide concentration, and nitrogen concentration (temperature and pressure are also required for the last two). The key advantage of this approach is that inexpensive on-line sensors may be used

  3. A TECHNOLOGY ASSESSMENT AND FEASIBILITY EVALUATION OF NATURAL GAS ENERGY FLOW MEASUREMENT ALTERNATIVES

    Energy Technology Data Exchange (ETDEWEB)

    Kendricks A. Behring II; Eric Kelner; Ali Minachi; Cecil R. Sparks; Thomas B. Morrow; Steven J. Svedeman

    1999-01-01

    Deregulation and open access in the natural gas pipeline industry has changed the gas business environment towards greater reliance on local energy flow rate measurement. What was once a large, stable, and well-defined source of natural gas is now a composite from many small suppliers with greatly varying gas compositions. Unfortunately, the traditional approach to energy flow measurement [using a gas chromatograph (GC) for composition assay in conjunction with a flow meter] is only cost effective for large capacity supplies (typically greater than 1 to 30 million scfd). A less costly approach will encourage more widespread use of energy measurement technology. In turn, the US will benefit from tighter gas inventory control, more efficient pipeline and industrial plant operations, and ultimately lower costs to the consumer. An assessment of the state and direction of technology for natural gas energy flow rate measurement is presented. The alternative technologies were ranked according to their potential to dramatically reduce capital and operating and maintenance (O and M) costs, while improving reliability and accuracy. The top-ranked technologies take an unconventional inference approach to the energy measurement problem. Because of that approach, they will not satisfy the fundamental need for composition assay, but have great potential to reduce industry reliance on the GC. Technological feasibility of the inference approach was demonstrated through the successful development of data correlations that relate energy measurement properties (molecular weight, mass-based heating value, standard density, molar ideal gross heating value, standard volumetric heating value, density, and volume-based heating value) to three inferential properties: standard sound speed, carbon dioxide concentration, and nitrogen concentration (temperature and pressure are also required for the last two). The key advantage of this approach is that inexpensive on-line sensors may be used

  4. Carbon dioxide sequestration by mineral carbonation. Feasibility of enhanced natural weathering as a CO2 emission reduction technology

    Energy Technology Data Exchange (ETDEWEB)

    Huijgen, W.J.J. [ECN Biomass, Coal and Environmental Research, Petten (Netherlands)

    2007-07-01

    A possible technology that can contribute to the reduction of carbon dioxide emissions is CO2 sequestration by mineral carbonation. The basic concept behind mineral CO2 sequestration is the mimicking of natural weathering processes in which calcium or magnesium containing minerals react with gaseous CO2 and form solid calcium or magnesium carbonates. Potential advantages of mineral CO2 sequestration compared to, e.g., geological CO2 storage include (1) the permanent and inherently safe sequestration of CO2, due to the thermodynamic stability of the carbonate product formed and (2) the vast potential sequestration capacity, because of the widespread and abundant occurrence of suitable feedstock. In addition, carbonation is an exothermic process, which potentially limits the overall energy consumption and costs of CO2 emission reduction. However, weathering processes are slow, with timescales at natural conditions of thousands to millions of years. For industrial implementation, a reduction of the reaction time to the order of minutes has to be achieved by developing alternative process routes. The aim of this thesis is an investigation of the technical, energetic, and economic feasibility of CO2 sequestration by mineral carbonation. In Chapter 1 the literature published on CO2 sequestration by mineral carbonation is reviewed. Among the potentially suitable mineral feedstock for mineral CO2 sequestration, Ca-silicates, more particularly wollastonite (CaSiO3), a mineral ore, and steel slag, an industrial alkaline solid residue, are selected for further research. Alkaline Ca-rich residues seem particularly promising, since these materials are inexpensive and available near large industrial point sources of CO2. In addition, residues tend to react relatively rapidly with CO2 due to their (geo)chemical instability. Various process routes have been proposed for mineral carbonation, which often include a pre-treatment of the solid feedstock (e.g., size reduction and

  5. Object/Shape Recognition Technology: An Assessment of the Feasibility of Implementation at Defense Logistics Agency Disposition Services

    Science.gov (United States)

    2015-02-25

    IV.  ANALYSIS OF THE CURRENT PROPERTY PROCESS AT DEFENSE LOGISTICS AGENCY DISPOSITION SERVICES AND MATURITY ASSESSMENT OF OBJECT/SHAPE RECOGNITION...implement full automation with optical sorting and data mining that included sensors, laser, object/shape recognition technology on conveyor belt...the current state of object/shape recognition technology and assess the feasibility of implementing it at DLA DS. C. RESEARCH QUESTIONS, SCOPE AND

  6. Mechanisms and feasibility of prey capture in ambush-feeding zooplankton

    DEFF Research Database (Denmark)

    Kiørboe, Thomas; Andersen, Anders Peter; Langlois, Vincent

    2009-01-01

    Many marine zooplankters, particularly among copepods, are "ambush feeders" that passively wait for their prey and capture them by fast surprise attacks. This strategy must be very demanding in terms of muscle power and sensing capabilities, but the detailed mechanisms of the attacks are unknown....... Using high-speed video we describe how copepods perform spectacular attacks by precision maneuvering during a rapid jump. We show that the flow created by the attacking copepod is so small that the prey is not pushed away, and that the attacks are feasible because of their high velocity (approximate...... to 100 mm.s(-1)) and short duration (few ms), which leaves the prey no time for escape. Simulations and analytical estimates show that the viscous boundary layer that develops around the attacking copepod is thin at the time of prey capture and that the flow around the prey is small and remains potential...

  7. Compliance and technical feasibility of long-term health monitoring with wearable and ambient technologies.

    Science.gov (United States)

    Merilahti, Juho; Pärkkä, Juha; Antila, Kari; Paavilainen, Paula; Mattila, Elina; Malm, Esko-Juhani; Saarinen, Ari; Korhonen, Ilkka

    2009-01-01

    We developed a system consisting of both wearable and ambient technologies designed to monitor personal wellbeing for several months during daily life. The variables monitored included bodyweight, blood pressure, heart-rate variability and air temperature. Two different user groups were studied: there were 17 working-age subjects participating in a vocational rehabilitation programme and 19 elderly people living in an assisted living facility. The working-age subjects collected data for a total of 1406 days; the average participation period was 83 days (range 43-99). The elderly subjects collected data for a total of 1593 days; the average participation period was 84 days (range 19-107). Usage, technical feasibility and usability of the system were also studied. Some technical and practical problems appeared which we had not expected such as thunder storm damage to equipment in homes and scheduling differences between staff and the subjects. The users gave positive feedback in almost all their responses in a questionnaire. The study suggests that the data-collection rate is likely be 70-90% for typical health monitoring data.

  8. Feasibility of remotely manipulated welding in space. A step in the development of novel joining technologies

    Science.gov (United States)

    Masubuchi, K.; Agapakis, J. E.; Debiccari, A.; Vonalt, C.

    1983-01-01

    In order to establish permanent human presence in space technologies of constructing and repairing space stations and other space structures must be developed. Most construction jobs are performed on earth and the fabricated modules will then be delivered to space by the Space Shuttle. Only limited final assembly jobs, which are primarily mechanical fastening, will be performed on site in space. Such fabrication plans, however, limit the designs of these structures, because each module must fit inside the transport vehicle and must withstand launching stresses which are considerably high. Large-scale utilization of space necessitates more extensive construction work on site. Furthermore, continuous operations of space stations and other structures require maintenance and repairs of structural components as well as of tools and equipment on these space structures. Metal joining technologies, and especially high-quality welding, in space need developing.

  9. Neural mechanisms underlying transcranial direct current stimulation in aphasia: A feasibility study.

    Directory of Open Access Journals (Sweden)

    Lena eUlm

    2015-10-01

    Full Text Available Little is known about the neural mechanisms by which transcranial direct current stimulation (tDCS impacts on language processing in post-stroke aphasia. This was addressed in a proof-of-principle study that explored the effects of tDCS application in aphasia during simultaneous functional magnetic resonance imaging (fMRI. We employed a single subject, cross-over, sham-tDCS controlled design and the stimulation was administered to an individualized perilesional stimulation site that was identified by a baseline fMRI scan and a picture naming task. Peak activity during the baseline scan was located in the spared left inferior frontal gyrus (IFG and this area was stimulated during a subsequent cross-over phase. tDCS was successfully administered to the target region and anodal- vs. sham-tDCS resulted in selectively increased activity at the stimulation site. Our results thus demonstrate that it is feasible to precisely target an individualized stimulation site in aphasia patients during simultaneous fMRI which allows assessing the neural mechanisms underlying tDCS application. The functional imaging results of this case report highlight one possible mechanism that may have contributed to beneficial behavioural stimulation effects in previous clinical tDCS trials in aphasia. In the future, this approach will allow identifying distinct patterns of stimulation effects on neural processing in larger cohorts of patients. This may ultimately yield information about the variability of tDCS-effects on brain functions in aphasia.

  10. Neural Mechanisms Underlying Perilesional Transcranial Direct Current Stimulation in Aphasia: A Feasibility Study

    Science.gov (United States)

    Ulm, Lena; McMahon, Katie; Copland, David; de Zubicaray, Greig I.; Meinzer, Marcus

    2015-01-01

    Little is known about the neural mechanisms by which transcranial direct current stimulation (tDCS) impacts on language processing in post-stroke aphasia. This was addressed in a proof-of-principle study that explored the effects of tDCS application in aphasia during simultaneous functional magnetic resonance imaging (fMRI). We employed a single subject, cross-over, sham-tDCS controlled design, and the stimulation was administered to an individualized perilesional stimulation site that was identified by a baseline fMRI scan and a picture naming task. Peak activity during the baseline scan was located in the spared left inferior frontal gyrus and this area was stimulated during a subsequent cross-over phase. tDCS was successfully administered to the target region and anodal- vs. sham-tDCS resulted in selectively increased activity at the stimulation site. Our results thus demonstrate that it is feasible to precisely target an individualized stimulation site in aphasia patients during simultaneous fMRI, which allows assessing the neural mechanisms underlying tDCS application. The functional imaging results of this case report highlight one possible mechanism that may have contributed to beneficial behavioral stimulation effects in previous clinical tDCS trials in aphasia. In the future, this approach will allow identifying distinct patterns of stimulation effects on neural processing in larger cohorts of patients. This may ultimately yield information about the variability of tDCS effects on brain functions in aphasia. PMID:26500522

  11. Post-emplacement melt-flow as a feasible mechanism for reversed differentiation in tholeiitic sills

    Science.gov (United States)

    Aarnes, I.; Podladchikov, Y. Y.; Neumann, E.-R.; Galerne, C.

    2009-04-01

    This study provides a new explanation model for differentiation in sills, using a combination of geochemical data and field observations, numerical modeling and dimensional analysis. Geochemical data from a saucer-shaped dolerite sill intruded into the Karoo basin, South Africa reveal a process which causes reversed differentiation. The differentiation process is identified by D-shaped geochemical profiles. The notation is based on the vertical expression of whole-rock Mg-number (Mg# = 100*Mg/(Mg+Fetotal)) with the most primitive composition (i.e. high Mg#) in its center, and progressively more evolved composition (i.e. low Mg#) towards the upper and lower margins. Normal differentiation by fractional crystallization is known to produce C-shaped profiles (in terms of Mg# variations), as for example in the Skaergaard Intrusion. From a detailed field study of a saucer-shaped sill complex in the Karoo Basin, South Africa, we observe several different shapes (e.g. S, D and I) occurring within one sill. However, the C-shape is practically absent and hence fractional crystallization with double layer diffusion cannot be the main mechanism for differentiation in sheet intrusions. Several models have been proposed for the formation of D-shaped profiles, such as crystal settling and convection, multiple injections, flow differentiation, compositional convection, or Soret fractionation in combination with in situ crystallization. There is however no general agreement of one particular model, as they pose difficulties explaining all occurrences of D-shaped profiles. Based on numerical modeling we introduce post-emplacement flow as a feasible mechanism to explain the D-shaped profiles. A melt-flow can cause magmatic differentiation in the sill by transporting incompatible and less compatible elements associated with the melt phase (e.g. Zr and Fe) in an advective process through a stationary crystal network. Crystal networks of considerable strength are known to form in the

  12. Swingbed Amine Carbon Dioxide Removal Flight Experiment - Feasibility Study and Concept Development for Cost-Effective Exploration Technology Maturation on The International Space Station

    Science.gov (United States)

    Hodgson, Edward; Papale, William; Nalette, Timothy; Graf, John; Sweterlitsch, Jeffery; Hayley, Elizabeth; Williams, Antony; Button, Amy

    2011-01-01

    The completion of International Space Station Assembly and transition to a full six person crew has created the opportunity to create and implement flight experiments that will drive down the ultimate risks and cost for human space exploration by maturing exploration technologies in realistic space environments that are impossible or incredibly costly to duplicate in terrestrial laboratories. An early opportunity for such a technology maturation experiment was recognized in the amine swingbed technology baselined for carbon dioxide and humidity control on the Orion spacecraft and Constellation Spacesuit System. An experiment concept using an existing high fidelity laboratory swing bed prototype has been evaluated in a feasibility and concept definition study leading to the conclusion that the envisioned flight experiment can be both feasible and of significant value for NASA s space exploration technology development efforts. Based on the results of that study NASA has proceeded with detailed design and implementation for the flight experiment. The study effort included the evaluation of technology risks, the extent to which ISS provided unique opportunities to understand them, and the implications of the resulting targeted risks for the experiment design and operational parameters. Based on those objectives and characteristics, ISS safety and integration requirements were examined, experiment concepts developed to address them and their feasibility assessed. This paper will describe the analysis effort and conclusions and present the resulting flight experiment concept. The flight experiment, implemented by NASA and launched in two packages in January and August 2011, integrates the swing bed with supporting elements including electrical power and controls, sensors, cooling, heating, fans, air- and water-conserving functionality, and mechanical packaging structure. It is now on board the ISS awaiting installation and activation.

  13. Computerised mirror therapy with Augmented Reflection Technology for early stroke rehabilitation: clinical feasibility and integration as an adjunct therapy.

    Science.gov (United States)

    Hoermann, Simon; Ferreira Dos Santos, Luara; Morkisch, Nadine; Jettkowski, Katrin; Sillis, Moran; Devan, Hemakumar; Kanagasabai, Parimala S; Schmidt, Henning; Krüger, Jörg; Dohle, Christian; Regenbrecht, Holger; Hale, Leigh; Cutfield, Nicholas J

    2017-07-01

    New rehabilitation strategies for post-stroke upper limb rehabilitation employing visual stimulation show promising results, however, cost-efficient and clinically feasible ways to provide these interventions are still lacking. An integral step is to translate recent technological advances, such as in virtual and augmented reality, into therapeutic practice to improve outcomes for patients. This requires research on the adaptation of the technology for clinical use as well as on the appropriate guidelines and protocols for sustainable integration into therapeutic routines. Here, we present and evaluate a novel and affordable augmented reality system (Augmented Reflection Technology, ART) in combination with a validated mirror therapy protocol for upper limb rehabilitation after stroke. We evaluated components of the therapeutic intervention, from the patients' and the therapists' points of view in a clinical feasibility study at a rehabilitation centre. We also assessed the integration of ART as an adjunct therapy for the clinical rehabilitation of subacute patients at two different hospitals. The results showed that the combination and application of the Berlin Protocol for Mirror Therapy together with ART was feasible for clinical use. This combination was integrated into the therapeutic plan of subacute stroke patients at the two clinical locations where the second part of this research was conducted. Our findings pave the way for using technology to provide mirror therapy in clinical settings and show potential for the more effective use of inpatient time and enhanced recoveries for patients. Implications for Rehabilitation Computerised Mirror Therapy is feasible for clinical use Augmented Reflection Technology can be integrated as an adjunctive therapeutic intervention for subacute stroke patients in an inpatient setting Virtual Rehabilitation devices such as Augmented Reflection Technology have considerable potential to enhance stroke rehabilitation.

  14. Feasibility, limitation and possible solutions of RNAi-based technology for insect pest control

    Institute of Scientific and Technical Information of China (English)

    Hao Zhang; Hai-Chao Li; Xue-Xia Miao

    2013-01-01

    Numerous studies indicate that target gene silencing by RNA interference (RNAi)could lead to insect death.This phenomenon has been considered as a potential strategy for insect pest control,and it is termed RNAi-mediated crop protection.However,there are many limitations using RNAi-based technology for pest control,with the effectiveness target gene selection and reliable double-strand RNA(dsRNA)delivery being two of the major challenges.With respect to target gene selection,at present,the use of homologous genes and genome-scale high-throughput screening are the main strategies adopted by researchers.Once the target gene is identified,dsRNA can be delivered by micro-injection or by feeding as a dietary component.However,micro-injection,which is the most common method,can only be used in laboratory experiments.Expression of dsRNAs directed against insect genes in transgenic plants and spraying dsRNA reagents have been shown to induce RNAi effects on target insects.Hence,RNAi-mediated crop protection has been considered as a potential new-generation technology for pest control,or as a complementary method of existing pest control strategies;however,further development to improve the efficacy of protection and range of species affected is necessary.In this review,we have summarized current research on RNAi-based technology for pest insect management.Current progress has proven that RNAi technology has the potential to be a tool for designing a new generation of insect control measures.To accelerate its practical application in crop protection,further study on dsRNA uptake mechanisms based on the knowledge of insect physiology and biochemistry is needed.

  15. Feasibility, limitation and possible solutions of RNAi-based technology for insect pest control.

    Science.gov (United States)

    Zhang, Hao; Li, Hai-Chao; Miao, Xue-Xia

    2013-02-01

    Numerous studies indicate that target gene silencing by RNA interference (RNAi) could lead to insect death. This phenomenon has been considered as a potential strategy for insect pest control, and it is termed RNAi-mediated crop protection. However, there are many limitations using RNAi-based technology for pest control, with the effectiveness target gene selection and reliable double-strand RNA (dsRNA) delivery being two of the major challenges. With respect to target gene selection, at present, the use of homologous genes and genome-scale high-throughput screening are the main strategies adopted by researchers. Once the target gene is identified, dsRNA can be delivered by micro-injection or by feeding as a dietary component. However, micro-injection, which is the most common method, can only be used in laboratory experiments. Expression of dsRNAs directed against insect genes in transgenic plants and spraying dsRNA reagents have been shown to induce RNAi effects on target insects. Hence, RNAi-mediated crop protection has been considered as a potential new-generation technology for pest control, or as a complementary method of existing pest control strategies; however, further development to improve the efficacy of protection and range of species affected is necessary. In this review, we have summarized current research on RNAi-based technology for pest insect management. Current progress has proven that RNAi technology has the potential to be a tool for designing a new generation of insect control measures. To accelerate its practical application in crop protection, further study on dsRNA uptake mechanisms based on the knowledge of insect physiology and biochemistry is needed.

  16. Older patients' use of technology for a post-discharge nutritional intervention - A mixed-methods feasibility study

    DEFF Research Database (Denmark)

    Lindhardt Damsgaard, Tove; Nielsen, M H

    2017-01-01

    . This is a barrier for their access to many current and future health care offers. OBJECTIVES: To test the acceptability, feasibility and preliminary efficacy of technology-supported energy- and protein-enforced homedelivered meals for older patients discharged from hospital. DESIGN: Mixed method design including...... a quasi-experimental controlled feasibility trial and embedded qualitative interviews. PARTICIPANTS: Older medical patients (mean age 79.4 years; women 66.7%) at nutritional risk and discharged to own home were included consecutively to first the control group (n=18) and later the intervention group (n=18...... treated as usual. Data collection was done at baseline, and at six and 12 weeks follow-up. Feasibility evaluation focused on 1) inclusion and retention and 2) acceptability and functionality of the intervention. Efficacy primary endpoint: Muscle strength and BMI. Secondary: Health related quality of life...

  17. Fluid bed drying as upgrading technology for feasible treatment of Kolubara lignite

    Directory of Open Access Journals (Sweden)

    Erić Milić D.

    2016-01-01

    Full Text Available An overview of the current status of low-rank coal upgrading technologies is presented in the paper, particularly with respect to drying and dewatering procedures. In order to calculate the significant parameters of the moisture removal process, a model of convective coal drying in a fluid bed, based on the two-phase (bubbling fluidization model proposed by Kunii and Levenspiel, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium related to the particular coal variety addressed here (Kolubara lignite are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlünder is used to define heat transfer mechanisms occurring in the suspension phase of the fluid bed. A completely new set of experimental data obtained has been successfully used to validate the model additionally. [Projekat Ministarstva nauke Republike Srbije, br. TR33050 i III42010

  18. Aerospace Mechanisms and Tribology Technology: Case Study

    Science.gov (United States)

    Miyoshi, K.

    1999-01-01

    This paper focuses attention on tribology technology practice related to vacuum tribology. A case study describes an aspect of a real problem in sufficient detail for the engineer and scientist to understand the tribological situation and the failure. The nature of the problem is analyzed and the tribological properties are examined.

  19. Aerospace Mechanisms and Tribology Technology: Case Studies

    Science.gov (United States)

    Miyoshi, Kazuhisa

    1999-01-01

    This chapter focuses attention on tribology technology practice related to vacuum tribology and space tribology. Two case studies describe aspects of real problems in sufficient detail for the engineer and the scientist to understand the tribological situations and the failures. The nature of the problems is analyzed and the range of potential solutions is evaluated. Courses of action are recommended.

  20. Feasibility analysis of real-time physical modeling using WaveCore processor technology on FPGA

    NARCIS (Netherlands)

    Verstraelen, Math; Pfeifle, Florian; Bader, Rolf

    2015-01-01

    WaveCore is a scalable many-core processor technology. This technology is specifically developed and optimized for real-time acoustical modeling applications. The programmable WaveCore soft-core processor is silicon-technology independent and hence can be targeted to ASIC or FPGA technologies. The W

  1. Feasibility and usability of a home monitoring concept based on mobile phones and near field communication (NFC) technology.

    Science.gov (United States)

    Morak, Jürgen; Kollmann, Alexander; Schreier, Günter

    2007-01-01

    Utilization of mobile information and communication technologies in home monitoring applications is becoming more and more common. The mobile phone, acting as a patient terminal for patients suffering from chronic diseases, provides an active link to the caregiver to transmit health status information and receive feedback. In such a concept the usability is still limited by the necessity of entering the values via the mobile phone's small keypad. The near field communication technology (NFC), a touch-based wireless interface that became available recently, may improve the usability level of such applications significantly. The focus of this paper is to describe the development of a prototype application based on this technology embedded in a home monitoring system. The feasibility and usability of this approach are evaluated and compared with concepts used in previous approaches. The high quantifier with respect to overall usability indicates that NFC may be the technology of choice for some tasks in home monitoring applications.

  2. On SD-oriented mechanism of technological innovation

    Institute of Scientific and Technical Information of China (English)

    Yang Yuwen; Zhang Juyong

    2007-01-01

    If one enterprise just takes technological innovation as the way for economic profit but not the combinational profit of economy,society and ecology,it will never survive in this fierce competition market.Based on the relationship between technological innovation and sustainable development,this paper brings forward that technological innovation must take the sustainablel development of society as the fundamental goal.Technological innovation should be the real impulse for the development of society,economy and ecology.On the basis of the analysis on previous technologicalinnovation impetus mechanism,combined with the influential factors,this paper puts forward SD-oriented mechanism oftechnological innovation.

  3. Opto-acoustic image fusion technology for diagnostic breast imaging in a feasibility study

    Science.gov (United States)

    Zalev, Jason; Clingman, Bryan; Herzog, Don; Miller, Tom; Ulissey, Michael; Stavros, A. T.; Oraevsky, Alexander; Lavin, Philip; Kist, Kenneth; Dornbluth, N. C.; Otto, Pamela

    2015-03-01

    Functional opto-acoustic (OA) imaging was fused with gray-scale ultrasound acquired using a specialized duplex handheld probe. Feasibility Study findings indicated the potential to more accurately characterize breast masses for cancer than conventional diagnostic ultrasound (CDU). The Feasibility Study included OA imagery of 74 breast masses that were collected using the investigational Imagio® breast imaging system. Superior specificity and equal sensitivity to CDU was demonstrated, suggesting that OA fusion imaging may potentially obviate the need for negative biopsies without missing cancers in a certain percentage of breast masses. Preliminary results from a 100 subject Pilot Study are also discussed. A larger Pivotal Study (n=2,097 subjects) is underway to confirm the Feasibility Study and Pilot Study findings.

  4. Composite purification technology and mechanism of recycled aluminum alloys

    Institute of Scientific and Technical Information of China (English)

    房文斌; 耿耀宏; 安阁英; 叶荣茂

    2002-01-01

    Iron-rich inclusions in aluminum alloys can be effectively removed by composite purification of sedimentation and filtration technology.The results show that the purposed method has no negative effects on aluminum alloys and obviously improve their mechanical properties.

  5. Florida commercial space initiatives and technology transfer mechanisms

    Science.gov (United States)

    Moore, Roger L.

    1989-01-01

    This paper discusses commercial space policy for the State of Florida in the context of state initiatives for general technology and economic development. The paper also compares Florida's commercial space initiatives to national space policies and describes mechanisms for transferring space related technologies and research to Florida businesses for subsequent development and commercialization.

  6. Feasibility Study of Cryogenic Cutting Technology by Using a Computer Simulation and Manufacture of Main Components for Cryogenic Cutting System

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Sung Kyun; Lee, Dong Gyu; Lee, Kune Woo [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Song, Oh Seop [Chungnam National University, Deajeon (Korea, Republic of)

    2009-06-15

    Cryogenic cutting technology is one of the most suitable technologies for dismantling nuclear facilities due to the fact that a secondary waste is not generated during the cutting process. In this paper, the feasibility of cryogenic cutting technology was investigated by using a computer simulation. In the computer simulation, a hybrid method combined with the SPH (smoothed particle hydrodynamics) method and the FE (finite element) method was used. And also, a penetration depth equation, for the design of the cryogenic cutting system, was used and the design variables and operation conditions to cut a 10 mm thickness for steel were determined. Finally, the main components of the cryogenic cutting system were manufactures on the basis of the obtained design variables and operation conditions.

  7. Keep in Touch (KIT): feasibility of using internet-based communication and information technology in palliative care.

    Science.gov (United States)

    Guo, Qiaohong; Cann, Beverley; McClement, Susan; Thompson, Genevieve; Chochinov, Harvey Max

    2017-05-06

    Confinement to an in-patient hospital ward impairs patients' sense of social support and connectedness. Providing the means, through communication technology, for patients to maintain contact with friends and family can potentially improve well-being at the end of life by minimizing social isolation and facilitating social connection. This study aimed to explore the feasibility of introducing internet-based communication and information technologies for in-patients and their families and to describe their experience in using this technology. A cross-sectional survey design was used to describe patient and family member experiences in using internet-based communication technology and health care provider views of using such technology in palliative care. Participants included 13 palliative in-patients, 38 family members, and 14 health care providers. An iPad or a laptop computer with password-protected internet access was loaned to each patient and family member for about two weeks or they used their own electronic devices for the duration of the patient's stay. Quantitative and qualitative data were collected from patients, families, and health care providers to discern how patients and families used the technology, its ease of use and its impact. Descriptive statistics and paired sample t-tests were used to analyze quantitative data; qualitative data were analyzed using constant comparative techniques. Palliative patients and family members used the technology to keep in touch with family and friends, entertain themselves, look up information, or accomplish tasks. Most participants found the technology easy to use and reported that it helped them feel better overall, connected to others and calm. The availability of competent, respectful, and caring technical support personnel was highly valued by patients and families. Health care providers identified that computer technology helped patients and families keep others informed about the patient's condition, enabled

  8. Innovative mechanical technologies for agricultural and forest quality productions

    Directory of Open Access Journals (Sweden)

    Raffaele Cavalli

    2008-04-01

    Full Text Available The quality of agricultural and forest products are related to the productive process in which innovative mechanical technologies are used. The innovation should be considered at product, process and enterprise level, the last one being considered as changes into enterprise organization, included services diversification. In the field of machinery used for agricultural products, from soil tillage to harvesting and post-harvesting processes the innovation dealing with products, but also with energy use, environmental protection, work safety has been important due to the mechanical technology output. In the forest sector working systems in which operations are carried out in totally mechanized way, with small turn to semi-mechanized operations, are growing. They are innovations that should change the relationship with young generation which could consider the mechanical technologies attractive for a working activity until now evaluated not much desiderable.

  9. Innovative mechanical technologies for agricultural and forest quality productions

    Directory of Open Access Journals (Sweden)

    Raffaele Cavalli

    2011-02-01

    Full Text Available The quality of agricultural and forest products are related to the productive process in which innovative mechanical technologies are used. The innovation should be considered at product, process and enterprise level, the last one being considered as changes into enterprise organization, included services diversification. In the field of machinery used for agricultural products, from soil tillage to harvesting and post-harvesting processes the innovation dealing with products, but also with energy use, environmental protection, work safety has been important due to the mechanical technology output. In the forest sector working systems in which operations are carried out in totally mechanized way, with small turn to semi-mechanized operations, are growing. They are innovations that should change the relationship with young generation which could consider the mechanical technologies attractive for a working activity until now evaluated not much desiderable.

  10. JV Task 106 - Feasibility of CO2 Capture Technologies for Existing North Dakota Lignite-Fired Pulverized Coal Boilers

    Energy Technology Data Exchange (ETDEWEB)

    Michael L. Jones; Brandon M. Pavlish; Melanie D. Jensen

    2007-05-01

    The goal of this project is to provide a technical review and evaluation of various carbon dioxide (CO{sub 2}) capture technologies, with a focus on the applicability to lignite-fired facilities within North Dakota. The motivation for the project came from the Lignite Energy Council's (LEC's) need to identify the feasibility of CO{sub 2} capture technologies for existing North Dakota lignite-fired, pulverized coal (pc) power plants. A literature review was completed to determine the commercially available technologies as well as to identify emerging CO{sub 2} capture technologies that are currently in the research or demonstration phase. The literature review revealed few commercially available technologies for a coal-fired power plant. CO{sub 2} separation and capture using amine scrubbing have been performed for several years in industry and could be applied to an existing pc-fired power plant. Other promising technologies do exist, but many are still in the research and demonstration phases. Oxyfuel combustion, a technology that has been used in industry for several years to increase boiler efficiency, is in the process of being tailored for CO{sub 2} separation and capture. These two technologies were chosen for evaluation for CO{sub 2} separation and capture from coal-fired power plants. Although oxyfuel combustion is still in the pilot-scale demonstration phase, it was chosen to be evaluated at LEC's request because it is one of the most promising emerging technologies. As part of the evaluation of the two chosen technologies, a conceptual design, a mass and energy balance, and an economic evaluation were completed.

  11. Mechanics of materials an introduction to engineering technology

    CERN Document Server

    Ghavami, Parviz

    2015-01-01

    This book, framed in the processes of engineering analysis and design, presents concepts in mechanics of materials for students in two-year or four-year programs in engineering technology, architecture, and building construction, as well as for students in vocational schools and technical institutes. Using the principles and laws of mechanics, physics, and the fundamentals of engineering, Mechanics of Materials: An Introduction for Engineering Technology will help aspiring and practicing engineers and engineering technicians from across disciplines—mechanical, civil, chemical, and electrical—apply concepts of engineering mechanics for analysis and design of materials, structures, and machine components. The book is ideal for those seeking a rigorous, algebra/trigonometry-based text on the mechanics of materials. This book also: ·       Elucidates concepts of engineering mechanics in materials, including stress and strain, force systems on structures, moment of inertia, and shear and bending moments...

  12. Research on mechanism of technological diffusion in industry cluster

    Institute of Scientific and Technical Information of China (English)

    Wang Qin; Cheng Yong

    2006-01-01

    The main aim of the paper is to explain the reason and mechanism of technological diffusion in industry cluster. Following the idea showed in Zhou Qin's model, we further develop the theoretical analysis that how the technological gap between strong enterprises and weak enterprises determines the level and speed of technological diffusion. The bigger the technological disparity between strong enterprise and weak enterprise is, the quicker technology spreads and knowledge overflows; on the contrary, the smaller the technological disparity between strong enterprise and weak enterprise is, the slower technology spread and knowledge overflows. Therefore, this kind of mechanism is helpful for enterprises in an industry cluster to learn from each other and to enable each enterprise close to the "the average level" of technology or knowledge. As a result, we think that, there exists a close relation between technological gap and technological diffusion. The paper puts forward the way of knowledge overflows of the strong enterprises: imitation-demonstration effect, the longitudinal connection in the industrial chain, the labor force flow and transfer, informal exchange.

  13. Feasibility of mHealth and Near Field Communication technology based medication adherence monitoring.

    Science.gov (United States)

    Morak, Juergen; Schwarz, Mark; Hayn, Dieter; Schreier, Guenter

    2012-01-01

    Poor patients' adherence to intake of prescribed medication has been identified as a serious problem in the treatment of chronically ill patients. Technical solutions are needed to measure and - if necessary - to increase the patients' adherence. A telemonitoring solution was developed to record a patient's medication intake based on smart blisters and mobile phones with NFC functionality. The components allowed recording of drug type, timestamp, and dosage of pills taken. The system's usability and technical feasibility was evaluated in the course of an application study. Over a period of 13 months 59 patients suffering from diabetes were monitored. 1,760 blisters were handed out to these patients and 14,843 takeout events were recorded and transmitted via mobile phone. Results indicate the feasibility of this concept to monitor adherence. Although the system still needs to be optimized for routine use it shows the potential for targeting the problem of poor patient adherence by NFC enabled devices.

  14. Feasibility study of utilizing solar furnace technology in steel making industry

    Energy Technology Data Exchange (ETDEWEB)

    Abbaspoursani, K. [The Faculty of Mechanical Engineering, Takestan Islamic Azad University (Iran, Islamic Republic of)], Email: a.abbaspour@tiau.ac.ir; Tofigh, A.A.; Nahang Toudeshki, S.; Hadadian, A. [Department of Energy, Materials and Energy Research Center (Iran, Islamic Republic of)], Email: Ali.A.Tofigh@gmail.com, email: toudeshki@hotmail.com, email: Arash.Hadadian@gmail.com; Farahmandpour, B. [Iranian Fuel Conservation company (Iran, Islamic Republic of)], Email: farahmandpour@gmail.com

    2011-07-01

    In Iran, the casting industry consumes 33.6% of electricity production, and most of this electricity is used in the melting process. Currently, scrap preheating is done using electric arc furnaces and the aim of this study is to assess the feasibility of replacing electric arc furnaces with solar furnaces. The performance of solar furnaces in the Iran Alloy Steel Company under Yazd climate conditions was studied. It was found that the solar irradiation time and solar insulation are sufficient to operate a solar furnace with the capacity to preheat 250 thousand tons per year of scrap to 500 degrees celsius. Results showed that such a furnace would decrease energy consumption by 40 GWh per year and that it would take 5 years to return the investment. This study demonstrated that operating a solar furnace in the Iran Alloy Steel Company under Yazd climate conditions is feasible and would result in economic and environmental benefits.

  15. The feasibility of using technology to enhance the transition of palliative care for rural patients.

    Science.gov (United States)

    Holland, Diane E; Vanderboom, Catherine E; Ingram, Cory J; Dose, Ann Marie; Borkenhagen, Lynn S; Skadahl, Phyllis; Pacyna, Joel E; Austin, Christine M; Bowles, Kathryn H

    2014-06-01

    Palliative care services for patients with life-limiting conditions enhance their quality of life. Most palliative care services, however, are located in hospitals with limited transitional care for patients who live in distant locations. The long-term goal of this program of research is to use existing technology for virtual visits to provide transitional care for patients initially hospitalized in an urban setting by a nurse practitioner located closer to patients' homes in distant, rural settings. The purpose of this proof-of-concept study was to determine the resources needed to use the system (efficiency) and the quality of the audio and visual components (effectiveness) to conduct virtual visits between a clinician at an academic center and community-dwelling adults living in rural locations. Guided by the Technology Acceptance Model, a mixed-methods field design was used. Because of the burden of testing technology with patients with life-limiting conditions, the sample included eight healthy adults. Participant satisfaction and perceptions of the ease of using the technology were also measured. Virtual visits were conducted using a 3G-enabled Apple iPad, cellular phone data service, and a Web-based video conference service. Participants and clinicians perceived the technology as easy to use. Observations revealed the importance of the visual cues provided by the technology to enhance communication, engagement, and satisfaction. Findings from this study will inform a subsequent study of technology-enhanced transitional care with palliative care patients.

  16. Feasibility of solar technology (photovoltaic) adoption. A case study on Tennessee's poultry industry

    Energy Technology Data Exchange (ETDEWEB)

    Bazen, Ernest F.; Brown, Matthew A. [University of Tennessee, Department of Agricultural Economics, 2621 Morgan Circle, Knoxville, TN 37996 (United States)

    2009-03-15

    The advantages and limitations of solar photovoltaic (PV) systems for energy generation are reviewed under various physical efficiency limits and financial assistance programs. Recent increases in utility and fuel costs in poultry production as well as public awareness of and demand for green power or renewable energy sources have given renewed interest in alternative energy sources. This study seeks to investigate the impact of alternative energy programs, grants and other incentives on the feasibility of solar PV systems in several solar regions within Tennessee's poultry industry. Preliminary results show that incentives exceeding current levels before adoption of solar PV systems would be financially beneficial. (author)

  17. Feasibility study of flexible phased array ultrasonic technology using irregular surface specimen

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Seung Pyo; Moon, Yong Sik; Jung, Nam Du [NDE Performance Demonstration Team, Korea Hydro and Nuclear Power, Central Research Institute, Daejeon (Korea, Republic of)

    2015-02-15

    Nuclear power plant contain many dissimilar metal welds that connect carbon steel components with stainless steel pipes using alloy 600 welding materials. Primary water stress corrosion cracks at dissimilar metal welds have been continuously reported around the world. In periodic integrity evaluations, dissimilar metal welds are examined using a generic ultrasonic testing procedure, KPD-UT-10. In this procedure, the gap between the probe and examination surface is limited to 1/32 inch (0.8 mm). It is not easy to test some dissimilar metal welds in Korean plants applying ordinary technology because of their tapered shapes and irregular surface conditions. This paper introduces a method for applying a flexible phased array technology to improve the reliability of ultrasonic testing results for various shapes and surface conditions. The artificial flaws in specimens with irregular surfaces were completely detected using the flexible phased array ultrasonic technology. Therefore, it can be said that the technology is applicable to field examination.

  18. Maternal Obesity Management Using Mobile Technology: A Feasibility Study to Evaluate a Text Messaging Based Complex Intervention during Pregnancy

    Science.gov (United States)

    Soltani, Hora; Duxbury, Alexandra M. S.; Arden, Madelynne A.; Dearden, Andy; Furness, Penny J.; Garland, Carolyn

    2015-01-01

    Background. Maternal obesity and excessive gestational weight gain (GWG) are on the rise with negative impact on pregnancy and birth outcomes. Research into managing GWG using accessible technology is limited. The maternal obesity management using mobile technology (MOMTech) study aimed at evaluating the feasibility of text messaging based complex intervention designed to support obese women (BMI ≥ 30) with healthier lifestyles and limit GWG. Methods. Participants received two daily text messages, supported by four appointments with healthy lifestyle midwife, diet and activity goal setting, and self-monitoring diaries. The comparison group were obese mothers who declined to participate but consented for their routinely collected data to be used for comparison. Postnatal interviews and focus groups with participants and the comparison group explored the intervention's acceptability and suggested improvements. Results. Fourteen women completed the study which did not allow statistical analyses. However, participants had lower mean GWG than the comparison group (6.65 kg versus 9.74 kg) and few (28% versus 50%) exceeded the Institute of Medicine's upper limit of 9 kg GWG for obese women. Conclusions. MOMTech was feasible within clinical setting and acceptable intervention to support women to limit GWG. Before further trials, slight modifications are planned to recruitment, text messages, and the logistics of consultation visits. PMID:25960889

  19. Maternal Obesity Management Using Mobile Technology: A Feasibility Study to Evaluate a Text Messaging Based Complex Intervention during Pregnancy

    Directory of Open Access Journals (Sweden)

    Hora Soltani

    2015-01-01

    Full Text Available Background. Maternal obesity and excessive gestational weight gain (GWG are on the rise with negative impact on pregnancy and birth outcomes. Research into managing GWG using accessible technology is limited. The maternal obesity management using mobile technology (MOMTech study aimed at evaluating the feasibility of text messaging based complex intervention designed to support obese women (BMI ≥ 30 with healthier lifestyles and limit GWG. Methods. Participants received two daily text messages, supported by four appointments with healthy lifestyle midwife, diet and activity goal setting, and self-monitoring diaries. The comparison group were obese mothers who declined to participate but consented for their routinely collected data to be used for comparison. Postnatal interviews and focus groups with participants and the comparison group explored the intervention’s acceptability and suggested improvements. Results. Fourteen women completed the study which did not allow statistical analyses. However, participants had lower mean GWG than the comparison group (6.65 kg versus 9.74 kg and few (28% versus 50% exceeded the Institute of Medicine’s upper limit of 9 kg GWG for obese women. Conclusions. MOMTech was feasible within clinical setting and acceptable intervention to support women to limit GWG. Before further trials, slight modifications are planned to recruitment, text messages, and the logistics of consultation visits.

  20. ANALYSIS OF THE MECHANISM MODELS OF TECHNOLOGICAL INNOVATION DIFFUSION

    Institute of Scientific and Technical Information of China (English)

    XU Jiuping; HU Minan

    2004-01-01

    This paper analyzes the mechanism and principle of diffusion of technology diffusion on the basis of quantitative analysis. Then it sets up the diffusion model of innovation incorporating price, advertising and distribution, the diffusion model of innovation including various kinds of consumers, and the substitute model between the new technology and the old one applied systems dynamics, optimization method, probabilistic method and simulation method on computer. Finally this paper concludes with some practical observations from a case study.

  1. Feasibility of a multipurpose transceiver module for phased array radar and EW applications using RFIC technology

    Science.gov (United States)

    Al-Sarawi, Said; Hansen, Hedley; Zhu, Yingbo

    2007-12-01

    Phased array antennas have a large number of civilian and military applications. In this paper we briefly review common approaches to an integrated implementation of radar and electronic warfare digital phase array module and highlight features that are common to both of these applications. Then we discuss how the promising features of the radio frequency integrated circuit (RFIC)-based technology can be utilized in building a transceiver module that meets the requirements of both radar and electronic warfare applications with minimum number of external components. This is achieved by researching the pros and cons of the different receiver architectures and their performance from the targeted applications point of view. Then, we survey current RFIC technologies and highlight the pros and cons of these technologies and how they impact the performance of the discussed receiver architectures.

  2. The Feasibility of a Fully Miniaturized Magneto-Optical Trap for Portable Ultracold Quantum Technology

    CERN Document Server

    Rushton, Joseph; Himsworth, Matt

    2014-01-01

    Experiments using laser cooled atoms and ions show real promise for practical applications in quantum- enhanced metrology, timing, navigation, and sensing as well as exotic roles in quantum computing, networking and simulation. The heart of many of these experiments has been translated to microfabricated platforms known as atom chips whose construction readily lend themselves to integration with larger systems and future mass production. To truly make the jump from laboratory demonstrations to practical, rugged devices, the complex surrounding infrastructure (including vacuum systems, optics, and lasers) also needs to be miniatur- ized and integrated. In this paper we explore the feasibility of applying this approach to the Magneto-Optical Trap; incorporating the vacuum system, atom source and optical geometry into a permanently sealed micro- litre system capable of maintaining $10^{-10}$ mbar for more than 1000 days of operation with passive pumping alone. We demonstrate such an engineering challenge is achi...

  3. Subsidence monitoring system for offshore applications: technology scouting and feasibility studies

    Science.gov (United States)

    Miandro, R.; Dacome, C.; Mosconi, A.; Roncari, G.

    2015-11-01

    Because of concern about possible impacts of hydrocarbon production activities on coastal-area environments and infrastructures, new hydrocarbon offshore development projects in Italy must submit a monitoring plan to Italian authorities to measure and analyse real-time subsidence evolution. The general geological context, where the main offshore Adriatic fields are located, is represented by young unconsolidated terrigenous sediments. In such geological environments, sea floor subsidence, caused by hydrocarbon extraction, is quite probable. Though many tools are available for subsidence monitoring onshore, few are available for offshore monitoring. To fill the gap ENI (Ente Nazionale Idrocarburi) started a research program, principally in collaboration with three companies, to generate a monitoring system tool to measure seafloor subsidence. The tool, according to ENI design technical-specification, would be a robust long pipeline or cable, with a variable or constant outside diameter (less than or equal to 100 mm) and interval spaced measuring points. The design specifications for the first prototype were: to detect 1 mm altitude variation, to work up to 100 m water depth and investigation length of 3 km. Advanced feasibility studies have been carried out with: Fugro Geoservices B.V. (Netherlands), D'Appolonia (Italy), Agisco (Italy). Five design (using three fundamental measurements concepts and five measurement tools) were explored: cable shape changes measured by cable strain using fiber optics (Fugro); cable inclination measured using tiltmeters (D'Appolonia) and measured using fiber optics (Fugro); and internal cable altitude-dependent pressure changes measured using fiber optics (Fugro) and measured using pressure transducers at discrete intervals along the hydraulic system (Agisco). Each design tool was analysed and a rank ordering of preferences was performed. The third method (measurement of pressure changes), with the solution proposed by Agisco, was

  4. Teacher design of technology for emergent literacy: An explorative feasibility study

    NARCIS (Netherlands)

    McKenney-Jensh, Susan E.; Voogt, Joke

    2012-01-01

    The active participation of teachers in designing classroom learning experiences contributes to teacher abilities to facilitate learning. This paper reports on a case study of one Dutch teacher designing a technology-rich learning environment for emergent literacy. Data was collected to explore the

  5. Teacher Design of Technology for Emergent Literacy: An Explorative Feasibility Study

    Science.gov (United States)

    McKenney, Susan; Voogt, Joke

    2012-01-01

    The active participation of teachers in designing classroom learning experiences contributes to teacher abilities to facilitate learning. This paper reports on a case study of one Dutch teacher designing a technology-rich learning environment for emergent literacy. Data was collected to explore the design and implementation of the learning…

  6. Teacher design of technology for emergent literacy: An explorative feasibility study

    NARCIS (Netherlands)

    McKenney, Susan; Voogt, Joke

    2012-01-01

    The active participation of teachers in designing classroom learning experiences contributes to teacher abilities to facilitate learning. This paper reports on a case study of one Dutch teacher designing a technology-rich learning environment for emergent literacy. Data was collected to explore the

  7. Cashless ships: a feasiblity study

    OpenAIRE

    Manhertz, Carey M

    1997-01-01

    Approved for public release; distribution is unlimited The advent of mechanisms for facilitating electronic commerce has triggered widespread interest in several fields. However, research in electronic commerce to include Smart Card Technology has mainly focused on land-based transactions. This research investigates the role of Information Technology in facilitating electronic commerce at sea, aboard U.S. Navy ships. It determines the feasibility of replacing the current cash shipboard arc...

  8. Report of feasibility study on international-cooperation in high efficient energy conversion technology

    Science.gov (United States)

    1993-03-01

    With regard to accelerated introduction of high efficient energy conversion technology to developing countries, the paper investigates the countries' thoughts of the introduction of the technology and the status of the introduction bases. The countries for survey are the Philippines, Indonesia, Malaysia and Thailand. The Philippine government expects to develop cogeneration as well as large power sources and to widen effective use of natural energy. In Indonesia, they largely expect effective use of biomass energy using Stirling engines by international cooperation and the promoted local electrification using standalone distributed fuel cells. In Malaysia, they have great expectations of the introduction of air conditioning facilities using Stirling engines and the use of standalone distributed fuel cells for promotion of local electrification. Thailand hopes for the use of Stirling engines to air conditioning systems, and the development of solar Stirling generators with solar energy as a heat source and electric vehicles.

  9. Economic Feasibility and Market Readiness of Solar Technologies. Draft Final Report. Volume I.

    Energy Technology Data Exchange (ETDEWEB)

    Flaim, Silvio J.; Buchanan, Deborah L.; Christmas, Susan; Fellhauer, Cheryl; Glenn, Barbara; Ketels, Peter A.; Levary, Arnon; Mourning, Pete; Steggerda, Paul; Trivedi, Harit; Witholder, Robert E.

    1978-09-01

    Systems descriptions, costs, technical and market readiness assessments are reported for ten solar technologies: solar heating and cooling of buildings (SHACOB), passive, agricultural and industrial process heat (A/IPH), biomass, ocean thermal (OTEC), wind (WECS), solar thermal electric, photovoltaics, satellite power station (SPS), and solar total energy systems (STES). Study objectives, scope, and methods. are presented. of Joint Task The cost and market analyses portion 5213/6103 will be used to make commercialization assessments in the conclusions of. the final report.

  10. Computer Generated Imagery (CGI) Current Technology and Cost Measures Feasibility Study.

    Science.gov (United States)

    1980-09-26

    Commercial Airlines Organization ( ICAO ) publication. Academia offers another potential source of technology infor- mation, especially with respect to...as Computer Graphics World and the Inter- national Commercial Airlines Organization ( ICAO ) publication. In addition, the proceedings of conferences...and its viewing direction. Eyepoint In a CIG ATD, the eyepoint is the simulated single point location of the observer’s eye relative to a monocular

  11. Mechanization of Continuous Production of Powdered Cellulose Technology

    Science.gov (United States)

    Prosvirnikov, D. B.; Safin, R. G.; Akhmetshin, I. R.; Taimarov, M. A.; Timerbaev, N. F.

    2017-07-01

    The article presents the mechanization of the process for obtaining powdered cellulose using the technology of steam explosion treatment of lignocellulosic material. The presented unit combines the methods of steam explosion treatment and acid hydrolysis of cellulose-containing raw materials.

  12. Towards the feasibility of using ultrasound to determine mechanical properties of tissues in a bioreactor

    Science.gov (United States)

    Mansour, Joseph M.; Gu, Di-Win Marine; Chung, Chen-Yuan; Heebner, Joseph; Althans, Jake; Abdalian, Sarah; Schluchter, Mark D.; Liu, Yiying; Welter, Jean F.

    2016-01-01

    Introduction Our ultimate goal is to non-destructively evaluate mechanical properties of tissue-engineered (TE) cartilage using ultrasound (US). We used agarose gels as surrogates for TE cartilage. Previously, we showed that mechanical properties measured using conventional methods were related to those measured using US, which suggested a way to non-destructively predict mechanical properties of samples with known volume fractions. In this study, we sought to determine whether the mechanical properties of samples, with unknown volume fractions could be predicted by US. Methods Aggregate moduli were calculated for hydrogels as a function of SOS, based on concentration and density using a poroelastic model. The data were used to train a statistical model, which we then used to predict volume fractions and mechanical properties of unknown samples. Young's and storage moduli were measured mechanically. Results The statistical model generally predicted the Young's moduli in compression to within mechanically measured value. We defined positive linear correlations between the aggregate modulus predicted from US and both the storage and Young's moduli determined from mechanical tests. Conclusions Mechanical properties of hydrogels with unknown volume fractions can be predicted successfully from US measurements. This method has the potential to predict mechanical properties of TE cartilage non-destructively in a bioreactor. PMID:25092421

  13. Effectiveness and feasibility of utilizing E4D technology as a teaching tool in a preclinical dental education environment.

    Science.gov (United States)

    Callan, Richard S; Palladino, Christie L; Furness, Alan R; Bundy, Emily L; Ange, Brittany L

    2014-10-01

    Recent efforts have been directed towards utilizing CAD/CAM technology in the education of future dentists. The purpose of this pilot study was to investigate the feasibility of implementing CAD/CAM technology in instruction on preparing a tooth for restoration. Students at one dental school were assigned access to CAD/CAM technology vs. traditional preparation methods in a randomized, crossover design. In a convenience sample of a second-year class, seventy-six of the seventy-nine students volunteered to participate, for a response rate of 96 percent. Two analyses were performed on this pilot data: a primary effectiveness analysis comparing students' competency exam scores by intervention group (intention-to-treat analysis) and a secondary efficacy analysis comparing competency exam scores among students who reported using CAD/CAM versus those who did not. The effectiveness analysis showed no difference in outcomes by intervention group assignment. While student survey results indicated interest in utilizing the technology, the actual utilization rate was much less than one might anticipate, yielding a sample size that limited statistical power. The secondary analysis demonstrated higher mean competency exam scores for students reporting use of CAD/CAM compared to those who did not use the technology, but these results did not reach statistical significance (p=0.075). Prior research has investigated the efficacy of CAD/CAM in a controlled educational trial, but this study adds to the literature by investigating student use of CAD/CAM in a real-world, self-study fashion. Further studies should investigate ways in which to increase student utilization of CAD/CAM and whether or not increased utilization, with a larger sample size, would yield significant outcomes.

  14. Maintaining Cognitive Functioning in Healthy Seniors with a Technology-Based Foreign Language Program: A Pilot Feasibility Study.

    Science.gov (United States)

    Ware, Caitlin; Damnee, Souad; Djabelkhir, Leila; Cristancho, Victoria; Wu, Ya-Huei; Benovici, Judith; Pino, Maribel; Rigaud, Anne-Sophie

    2017-01-01

    Researchers have hypothesized that learning a foreign language could be beneficial for seniors, as language learning requires the use of extensive neural networks. We developed and qualitatively evaluated an English training program for older French adults; our principal objective was to determine whether a program integrating technology is feasible for this population. We conducted a 4-month pilot study (16, 2-h sessions) with 14 French participants, (nine women, five men, average age 75). Questionnaires were administered pre- and post-intervention to measure cognitive level and subjective feelings of loneliness or social isolation; however, these scores did not improve significantly. Post-intervention, semi-directive interviews were carried out with participants, and a content/theme analysis was performed. Five main themes were identified from the interviews: Associations with school, attitudes toward English, motivation for learning English, attitudes toward the program's organization, and social ties. The program was found to be feasible for this age group, yet perceived as quite difficult for participants who lacked experience with English. Nonetheless, most participants found the program to be stimulating and enjoyable. We discuss different suggestions for future programs and future directions for foreign-language learning as a therapeutic and cognitive intervention.

  15. Data Sharing of Mechanical Design Formulas Using Semantic Web Technology

    Science.gov (United States)

    Zhou, Jun; Watanuki, Keiichi

    Speed and efficiency are necessary in the field of mechanical design. CAD/CAM/CAE technologies have advanced and attention has also been paid to increasing the efficiency of data sharing and agent processes in the web environment. In this paper, Semantic Web technology is used to enable the sharing of metadata. The metadata consists of design documents and design formulas, with additional semantic information inserted. Mathematical information is expressed by adding metadata into conventional mechanical design formulas using a Resource Description Framework (RDF). The design formulas are later written in MathML (Mathematical Markup Language) for the sake of data sharing. In this way, data sharing and advanced searching is made easy, because the relevant information is made machine readable in the web environment. The calculation of design formulas is made possible using a mathematical processing system, thus increasing the efficiency of mechanical design.

  16. Assessment of technological options and economical feasibility for cyanophycin biopolymer and high-value amino acid production

    Science.gov (United States)

    Oosterhuis, Nico; Giuseppin, Marco; Toonen, Marcel; Franssen, Henk; Scott, Elinor; Sanders, Johan; Steinbüchel, Alexander

    2007-01-01

    Major transitions can be expected within the next few decades aiming at the reduction of pollution and global warming and at energy saving measures. For these purposes, new sustainable biorefinery concepts will be needed that will replace the traditional mineral oil-based synthesis of specialty and bulk chemicals. An important group of these chemicals are those that comprise N-functionalities. Many plant components contained in biomass rest or waste stream fractions contain these N-functionalities in proteins and free amino acids that can be used as starting materials for the synthesis of biopolymers and chemicals. This paper describes the economic and technological feasibility for cyanophycin production by fermentation of the potato waste stream Protamylasse™ or directly in plants and its subsequent conversion to a number of N-containing bulk chemicals. PMID:17876577

  17. A feasibility study on using inkjet technology, micropumps, and MEMs as fuel injectors for bipropellant rocket engines

    Science.gov (United States)

    Glynne-Jones, Peter; Coletti, M.; White, N. M.; Gabriel, S. B.; Bramanti, C.

    2010-07-01

    Control over drop size distributions, injection rates, and geometrical distribution of fuel and oxidizer sprays in bi-propellant rocket engines has the potential to produce more efficient, more stable, less polluting rocket engines. This control also offers the potential of an engine that can be throttled, working efficiently over a wide range of output thrusts. Inkjet printing technologies, MEMS fuel atomizers, and piezoelectric injectors similar in concept to those used in diesel engines are considered for their potential to yield a new, more active injection scheme for a rocket engine. Inkjets are found to be unable to pump at sufficient pressures, and have possibly dangerous failure modes. Active injection is found to be feasible if high pressure drop along the injector plate is used. A conceptual design is presented and its basic behavior assessed.

  18. RU OK? The acceptability and feasibility of remote technologies for follow-up after early medical abortion.

    Science.gov (United States)

    Bracken, Hillary; Lohr, Patricia A; Taylor, Jeanette; Morroni, Chelsea; Winikoff, Beverly

    2014-07-01

    We tested the effectiveness and feasibility of remote communication technologies to increase follow-up after early medical abortion. Women (n=999) were randomized to 'remote' follow-up incorporating a low-sensitivity pregnancy test and standardized symptom questionnaire administered online, by text message or telephone by a non-clinical call center operator 2 weeks after treatment, or to 'clinic-based' follow-up with ultrasound at 1 week. Women in the clinic-based group who could not return performed a high-sensitivity pregnancy test at 3 weeks and had a telephone call with clinic staff. The primary outcome was completion of follow-up. Rates of complications, acceptability and preferences were compared. The overall follow-up rate did not differ by group {clinic-based, 73% vs. remote, 69%; risk ratio (RR) 1.0 [95% confidence interval (CI) 0.9-1.2]}. In the clinic-based group, 83% did not return for an ultrasound scan and were followed up by phone. In the remote group, follow-up by phone or text was more successful than online (text: 75.4%; phone: 73.7%; online: 46.5%, pafter medical abortion using remote communication is feasible and, for most women, preferable to a clinic visit. Medical abortion protocols typically use follow-up visits to ensure early identification of complications. This study demonstrates that follow-up can be achieved using remote communication technologies. This model may reduce the burden of multiple clinic visits on patients and providers. Copyright © 2014 Elsevier Inc. All rights reserved.

  19. Development of a TenTorTube for blade tip mechanisms. Pt. 1: feasibility and material tests

    Energy Technology Data Exchange (ETDEWEB)

    Joosse, P.A. [Stork Product Engineering, Amsterdam (Netherlands); Berg, R.M. van der [Rotorline Blade Company, Heerhugowaard (Netherlands)

    1996-12-31

    For variable speed wind turbines it is possible to perform both a power control and a safety function using passive tips. A conventional tip mechanism, consisting of a metal screw cylinder and spring is heavy, expensive and maintenance critical. These problems can be solved with a TenTorTube: a long, slender tube made of composite material in which the anistropic behaviour of fibre reinforced material is used. The feasibility of such a tube made out of fibre reinforced plastic has been shown. To verify the assumptions and obtain reliable material design data static material properties have been measured of epoxy tubes, with different fibre reinforcements. Based on static test values an aramid-epoxy tube showed the highest potential. Following the static tests a torsion creep tests and fatigue tests are carried out with the aim of investigating how this behaviour would influence the feasibility. Present results indicate that an improvement of reliability and reduction of mass and costs of the mechanism is to be expected. (author)

  20. Experimental investigation on feasible bioreactor using mechanism of hydrogen oxidation of natural soil for detritiation system.

    Science.gov (United States)

    Edao, Yuki; Iwai, Yasunori; Sato, Katsumi; Hayashi, Takumi

    2016-08-01

    A passive reactor for tritium oxidation at room temperature has been widely studied in nuclear engineering especially for a detritiation system (DS) of a tritium process facility taking possible extraordinary situation severely into consideration. We have focused on bacterial oxidation of tritium by hydrogen-oxidizing bacteria in natural soil to realize the passive oxidation reactor. The purpose of this study was to examine the feasibility of a bioreactor with hydrogen-oxidizing bacteria in soil from a point of view of engineering. The efficiency of the bioreactor was evaluated by kinetics. The bioreactor packed with natural soil shows a relative high conversion rate of tritium under the saturated moisture condition at room temperature, which is obviously superior to that of a Pt/Al2O3 catalyst generally used for tritium oxidation in the existing tritium handling facilities. The order of reaction for tritium oxidation with soil was the pseudo-first order as assessed with Michaelis-Menten kinetics model. Our engineering suggestion to increase the reaction rate is the intentional addition of hydrogen at a small concentration in the feed gas on condition that the oxidation of tritium with soil is expressed by the Michaelis-Menten kinetics model.

  1. Deactivation mechanism and feasible regeneration approaches for the used commercial NH3-SCR catalysts.

    Science.gov (United States)

    Yu, Yanke; Meng, Xiaoran; Chen, Jinsheng; Yin, Liqian; Qiu, Tianxue; He, Chi

    2016-01-01

    The deactivation and regeneration of selective catalytic reduction catalysts which have been used for about 37,000 h in a coal power plant are studied. The formation of Al2(SO4)3, surface deposition of K, Mg and Ca are primary reasons for the deactivation of the studied Selective catalytic reduction catalysts. Other factors such as activated V valence alteration also contribute to the deactivation. Reactivation of used catalysts via environment-friendly and finance-feasibly approaches, that is, dilute acid or alkali solution washing, would be of great interest. Three regeneration pathways were studied in the present work, and dilute nitric acid or sodium hydroxide solution could remove most of the contaminants over the catalyst surface and partly recover the catalytic performance. Notably, the acid-alkali combination washing, namely, catalysts treated by dilute sodium hydroxide and nitric acid solutions orderly, was much more effective than single washing approach in recovering the activity, and NO conversion increased from 23.6% to 89.5% at 380°C. The higher removal efficiency of contaminants, the lower dissolution of activated V, and promoting the formation of polymeric vanadate should be the main reason for recovery of the activity.

  2. Feasibility study on a portable field pest classification system design based on DSP and 3G wireless communication technology.

    Science.gov (United States)

    Han, Ruizhen; He, Yong; Liu, Fei

    2012-01-01

    This paper presents a feasibility study on a real-time in field pest classification system design based on Blackfin DSP and 3G wireless communication technology. This prototype system is composed of remote on-line classification platform (ROCP), which uses a digital signal processor (DSP) as a core CPU, and a host control platform (HCP). The ROCP is in charge of acquiring the pest image, extracting image features and detecting the class of pest using an Artificial Neural Network (ANN) classifier. It sends the image data, which is encoded using JPEG 2000 in DSP, to the HCP through the 3G network at the same time for further identification. The image transmission and communication are accomplished using 3G technology. Our system transmits the data via a commercial base station. The system can work properly based on the effective coverage of base stations, no matter the distance from the ROCP to the HCP. In the HCP, the image data is decoded and the pest image displayed in real-time for further identification. Authentication and performance tests of the prototype system were conducted. The authentication test showed that the image data were transmitted correctly. Based on the performance test results on six classes of pests, the average accuracy is 82%. Considering the different live pests' pose and different field lighting conditions, the result is satisfactory. The proposed technique is well suited for implementation in field pest classification on-line for precision agriculture.

  3. Evaluation of the feasibility of security technologies in teleradiology as biometric fingerprint scanners for data exchange over a satellite WAN

    Science.gov (United States)

    Soegner, Peter I.; Helweg, Gernot; Holzer, Heimo; zur Nedden, Dieter

    2000-05-01

    We evaluated the feasibility of fingerprint-scanners in combination with smart cards for personal identification and transmission of encrypted TCP/IP-data-packages via satellite between the university-hospital of Innsbruck and the rural hospital of Reutte. The aim of our study was the proof of the userfriendliness of the SkymedTM technology for security purpose in teleradiology. We examined the time of the personal identification process, the time for the necessary training and the personal satisfaction. The images were sent from the local PACS in Reutte via a Data-Encryption-and-Transmission- Box via satellite from Reutte to Innsbruck. We used an asymmetric bandwidth of 512 kbit/s from Reutte to Innsbruck and 128 kbit/s in the opposite direction. Window NT 4.0- operating PCs were used for the electronical patient record, the medical inquiry of the referring physician and the final report of the radiologist. The images were reported on an UNIX-PACS viewing station. After identification through fingerprint-scanners in combination with the smart card the radiologist was able to open the electronic patient record (EPR) from Reutte and sign with his digital signature his confirmed final report before it was send back to Reutte. The used security technology enables encrypted communication over a WAN, which fulfill data-protection.

  4. Feasibility Study on a Portable Field Pest Classification System Design Based on DSP and 3G Wireless Communication Technology

    Directory of Open Access Journals (Sweden)

    Fei Liu

    2012-03-01

    Full Text Available This paper presents a feasibility study on a real-time in field pest classification system design based on Blackfin DSP and 3G wireless communication technology. This prototype system is composed of remote on-line classification platform (ROCP, which uses a digital signal processor (DSP as a core CPU, and a host control platform (HCP. The ROCP is in charge of acquiring the pest image, extracting image features and detecting the class of pest using an Artificial Neural Network (ANN classifier. It sends the image data, which is encoded using JPEG 2000 in DSP, to the HCP through the 3G network at the same time for further identification. The image transmission and communication are accomplished using 3G technology. Our system transmits the data via a commercial base station. The system can work properly based on the effective coverage of base stations, no matter the distance from the ROCP to the HCP. In the HCP, the image data is decoded and the pest image displayed in real-time for further identification. Authentication and performance tests of the prototype system were conducted. The authentication test showed that the image data were transmitted correctly. Based on the performance test results on six classes of pests, the average accuracy is 82%. Considering the different live pests’ pose and different field lighting conditions, the result is satisfactory. The proposed technique is well suited for implementation in field pest classification on-line for precision agriculture.

  5. Investigation of the available technologies and their feasibility for the conversion of food waste into fish feed in Hong Kong.

    Science.gov (United States)

    Cheng, Jack Y K; Lo, Irene M C

    2016-04-01

    Food waste is the largest constituent of municipal solid waste in Hong Kong, but food waste recycling is still in its infancy. With the imminent saturation of all landfill sites by 2020, multiple technologies are needed to boost up the food waste recycling rate in Hong Kong. Conversion of food waste into animal feeds is prevalent in Japan, South Korea, and Taiwan, treating over 40 % of their recycled food waste. This direction is worth exploring in Hong Kong once concerns over food safety are resolved. Fortunately, while feeding food waste to pigs and chickens poses threats to public health, feeding it to fish is considered low risk. In order to examine the feasibility of converting food waste into fish feed in Hong Kong, this paper investigates the market demand, technical viability, feed quality, regulatory hurdles, and potential contribution. The results show that a significant amount of food waste can be recycled by converting it into fish feed due to the enormous demand from feed factories in mainland China. Two conversion technologies, heat drying and black soldier fly bioconversion, are studied extensively. Black soldier fly bioconversion is preferable because the end-product, insect powder, is anticipated to gain import approval from mainland China. The authors suggest further research efforts to speed up its application for food waste recycling in urban cities.

  6. A technology-enabled adherence enhancement system for people with bipolar disorder: results from a feasibility and patient acceptance analysis

    Directory of Open Access Journals (Sweden)

    Sajatovic M

    2015-06-01

    Full Text Available Martha Sajatovic,1 Michael S Davis,2 Kristin A Cassidy,3 Joseph Nestor,2 Johnny Sams,3 Edna Fuentes-Casiano3 1Department of Psychiatry and Neurological and Behavioral Outcomes Center, Case Western Reserve University School of Medicine and University Hospitals Case Medical Center, Cleveland, OH, USA; 2MedicaSafe, New York, NY, USA; 3Department of Psychiatry, Case Western Reserve University School of Medicine, University Hospitals Case Medical Center, Cleveland, OH, USA Objective: As poor medication adherence is common in bipolar disorder (BD, technology-assisted approaches may help to monitor and enhance adherence. This study evaluated preliminary feasibility, patient satisfaction and effects on adherence, BD knowledge, and BD symptoms associated with the use of a multicomponent technology-assisted adherence enhancement system. Methods: This prospective study tested the system in five BD patients over a 15-day period. System components included: 1 an automated pill cap with remote monitoring sensor; 2 a multimedia adherence enhancement program; and 3 a treatment incentive program. This study evaluated system usability, patient satisfaction and effects on adherence (Morisky scale, knowledge (treatment knowledge test [TKT], and symptoms (internal state scale [ISS]. Results: Mean age of the sample was 62 years, 4/5 (80% Caucasian, and 4/5 (80% single/divorced or widowed. Most participants (4/5, 80% were on a single BD medication. Participants had BD for an average of 21 years. Challenges included attaching the pill sensor to standard pharmacy bottles for individuals using very large pill containers or those with multiday pill boxes. Three of five (60% individuals completed the full 15-day period. Usability scores were high overall. Mean Morisky scores improved. Means on all four subscales of the ISS were all in the direction of improvement. On the TKT, there was a 40% increase in mean scores. Conclusion: A multicomponent technology-assisted BD

  7. Balanced technology initiative on computational mechanics of materials

    Science.gov (United States)

    Asaro, Robert J.

    1993-04-01

    The goal of this project, which was part of the DARPA Balanced Technology Initiative on Computational Mechanics, was to develop a comprehensive approach to the numerical modeling of the mechanical behavior of materials. Particular areas for focus in the project were the inelastic deformation of highly anisotropic materials such as single crystals and textured polycrystals, as well as evolving microstructural damage in ceramics and ductile metals in both slow and high rate deformation processes. While the contract was awarded for a period of three years, it was actually funded only for the first year. Nonetheless, significant progress can be reported as a direct result of this project.

  8. Mechanical spring technology improves running economy in endurance runners

    OpenAIRE

    Riess, Kenneth James

    2014-01-01

    In recent years there has been an increase in participation in timed running events. With this increase, the motivation for individuals to run their best has motivated the running shoe industry to make design changes to traditional running foot wear in an effort to improve running economy (RE) and decrease running times. One such design change has been to incorporate mechanical springs (MS) into the midsole of the running shoe. Evaluation of this technology has yet to be performed. This study...

  9. Initiation of home mechanical ventilation at home : A randomised controlled trial of efficacy, feasibility and costs

    NARCIS (Netherlands)

    Hazenberg, A; Kerstjens, H A M; Prins, S C L; Vermeulen, K M; Wijkstra, P J

    Introduction: Home mechanical ventilation (HMV) in the Netherlands is normally initiated in hospital, but this is expensive and often a burden for the patient. In this randomised controlled study we investigated whether initiation of HMV at home in patients with chronic respiratory failure is

  10. Initiation of home mechanical ventilation at home: A randomised controlled trial of efficacy, feasibility and costs

    NARCIS (Netherlands)

    Hazenberg, A.; Kerstjens, H.A.M.; Prins, S.C.L.; Vermeulen, K.M.; Wijkstra, P.J.

    2014-01-01

    Introduction Home mechanical ventilation (HMV) in the Netherlands is normally initiated in hospital, but this is expensive and often a burden for the patient. In this randomised controlled study we investigated whether initiation of HMV at home in patients with chronic respiratory failure is

  11. Initiation of home mechanical ventilation at home : A randomised controlled trial of efficacy, feasibility and costs

    NARCIS (Netherlands)

    Hazenberg, A; Kerstjens, H A M; Prins, S C L; Vermeulen, K M; Wijkstra, P J

    2014-01-01

    Introduction: Home mechanical ventilation (HMV) in the Netherlands is normally initiated in hospital, but this is expensive and often a burden for the patient. In this randomised controlled study we investigated whether initiation of HMV at home in patients with chronic respiratory failure is non-in

  12. Exploring the feasibility of integrating barcode scanning technology into vaccine inventory recording in seasonal influenza vaccination clinics.

    Science.gov (United States)

    Pereira, Jennifer A; Quach, Susan; Hamid, Jemila S; Heidebrecht, Christine L; Quan, Sherman D; Nassif, Jane; Diniz, Amanda Jane; Van Exan, Robert; Malawski, Jeffrey; Gentry, Adrian; Finkelstein, Michael; Guay, Maryse; Buckeridge, David L; Bettinger, Julie A; Kalailieff, Donna; Kwong, Jeffrey C

    2012-01-17

    In response to the need for improved quality of vaccine inventory and client immunization records, barcodes containing a unique identifier and lot number will be placed on all vaccine vials in Canada. We conducted feasibility studies to examine integration of barcode scanning into inventory recording workflow for mass immunization clinics. During the 2010-2011 seasonal influenza vaccination campaign, Ontario public health units (PHUs) using an electronic immunization system were randomized to record clinic inventory data (including vaccine lot number and expiry date) through: (i) barcode scanning of vials; or (ii) drop-down menus. A third group of PHUs recording vaccine inventory on paper served as an observation arm. We visited a sample of clinics within each PHU to assess barcode readability, method efficiency and data quality. Clinic staff completed a survey examining method perceptions. We observed 20 clinics using barcode scanning to record inventory data (eight PHUs), 20 using drop-down menus (eight PHUs), and 21 using paper forms (five PHUs). Mean time spent recording data per vial was 4.3s using barcode scanners with 1.3 scan attempts per vial, 0.5s using drop-down menus, and 1.7s using paper. Few errors were observed. Sixty-four perception surveys were completed by inventory staff; barcode scanning users indicated fairly strong overall satisfaction with the method (74%), and the majority agreed that barcode scanning improved client safety (84%) and inventory record accuracy (77%). However, 38% of barcode scanning users felt that individually scanning vials took longer than the other approaches and 26% indicated that this increased time would discourage them from adopting the method. Our study demonstrated good readability of barcodes but scanning individual vials for high-volume clinics was time-consuming; modifying the process will improve feasibility to facilitate adoption in Canada, while serving as an example for other countries considering this

  13. Aerosciences, Aero-Propulsion and Flight Mechanics Technology Development for NASA's Next Generation Launch Technology Program

    Science.gov (United States)

    Cockrell, Charles E., Jr.

    2003-01-01

    The Next Generation Launch Technology (NGLT) program, Vehicle Systems Research and Technology (VSR&T) project is pursuing technology advancements in aerothermodynamics, aeropropulsion and flight mechanics to enable development of future reusable launch vehicle (RLV) systems. The current design trade space includes rocket-propelled, hypersonic airbreathing and hybrid systems in two-stage and single-stage configurations. Aerothermodynamics technologies include experimental and computational databases to evaluate stage separation of two-stage vehicles as well as computational and trajectory simulation tools for this problem. Additionally, advancements in high-fidelity computational tools and measurement techniques are being pursued along with the study of flow physics phenomena, such as boundary-layer transition. Aero-propulsion technology development includes scramjet flowpath development and integration, with a current emphasis on hypervelocity (Mach 10 and above) operation, as well as the study of aero-propulsive interactions and the impact on overall vehicle performance. Flight mechanics technology development is focused on advanced guidance, navigation and control (GN&C) algorithms and adaptive flight control systems for both rocket-propelled and airbreathing vehicles.

  14. e-Therapy to reduce emotional distress in women undergoing assisted reproductive technology (ART): a feasibility randomized controlled trial.

    Science.gov (United States)

    van Dongen, Angelique J C M; Nelen, Willianne L D M; IntHout, Joanna; Kremer, Jan A M; Verhaak, Christianne M

    2016-05-01

    Is it feasible to evaluate a personalized e-therapy program (Internet based) for women during fertility treatment aimed to reduce the chance of having clinically relevant symptoms of anxiety and/or depression after unsuccessful assisted reproductive technology (ART) treatment within a randomized controlled trial (RCT)? The evaluation of a personalized e-therapy program is feasible, reflected by good acceptability and integration within current guidelines, but adjustments to the e-therapy program and study design of the RCT have to be made to enhance demand, practicality and efficacy. Internet-based interventions are promising in reducing psychological distress, especially when treatment is personalized to specific risk profiles of patients. However in fertility care, the beneficial effects of personalized e-therapy on psychological distress and its implementation in daily clinical care still have to be evaluated. To evaluate the feasibility of a personalized e-therapy program, we conducted a two-arm, parallel group, single-blind feasibility randomized controlled trial with a 1:1 allocation. Feasibility was assessed in terms of demand, acceptability, practicality, implementation, integration and limited efficacy. Women were included between 1 February 2011 and 1 June 2013. Women in the control group received care as usual, whereas women in the intervention group received in addition to their usual care access to a personalized e-therapy program. Women were monitored until 3 months after the start of their first ART cycle. In a university hospital in the Netherlands women who were screened as at risk for emotional adjustment problems and intended to start their first ART cycle were invited, and of them 120 were randomized. Of these women, 48% in the intervention group were compliant to the intervention. Outcome measures associated with the feasibility to analyse this e-therapy program within an RCT were assessed. It is feasible to evaluate a personalized e

  15. Effective Information Technology Governance Mechanisms: An Australian Study

    Directory of Open Access Journals (Sweden)

    Syaiful Ali

    2006-01-01

    Full Text Available Growing importance of information technology (IT, as a strategic factor for organizations in achieving their objectives, have raised the concern of organizations in establishing and implementing effective IT governance. This study seeks to empirically examine the individual IT governance mechanisms that influence the overall effectiveness of IT governance. The data were obtained by using web based survey from 176 members of ISACA (Information Systems and Audit Control Association Australia. This study examines the influences of six proposed IT governance mechanisms on the overall effectiveness of IT governance. Using Factor Analysis and Multiple Regression techniques, the current study finds significant positive relationships between the overall level of effective IT governance and the following four IT governance mechanisms: the existence of ethics/ culture of compliance in IT, corporate communication systems, an IT strategy committee, and the involvement of senior management in IT.

  16. Teaching Nonlinear Mechanics: An Extensive Discussion of a Standard Example Feasible for Undergraduate Courses

    Science.gov (United States)

    Schneider, Patrick; Kienzler, Reinhold

    2014-03-01

    Most courses on mechanics of materials use a linearized (second-order) buckling analysis of a simple elastic system as an introductory example. We propose to start with a third-order buckling analysis instead, to enable the students to understand the crucial load-response diagrams from the beginning of the course. We present an extensive mathematical discussion of an extended standard introductory example, leading to an easy-to-implement plotting routine for load-response diagrams. The resulting diagrams are interpreted in physical terms. An implementation of the plotting algorithm using Maplesoft MapleTM is attached.

  17. Mechanical and thermo-mechanical analyses of the tapered plug for plugging of deposition tunnels. A feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    Faelth, Billy (Clay Technology AB, Lund (Sweden)); Gatter, Patrik (Vattenfall Power Consultant AB, Stockholm (Sweden))

    2009-09-15

    This report presents results from a study that was carried out in order to examine the applicability of the tapered plug concept for plugging of deposition tunnels in the deep repository for spent nuclear fuel. The report presents results from mechanical and thermo-mechanical models of the tapered plug. The models were analyzed with 3DEC. The models included a portion of a deposition tunnel and its intersection with a main tunnel. In the deposition tunnel, a tapered concrete plug was installed. The plug was subjected to the combined load from the swelling backfill material and from pore pressure inside the deposition tunnel. The thermo-mechanical effects due to the heat generation in the spent fuel were also included in the analyses. Generic material parameter values for the concrete were used. The following items were studied: - Stresses and displacements in the plug. - Shear stresses and shear displacements in the rock-concrete interface. - Stress additions in the rock due to the loads. The sensitivity of the results to changes of constitutive models, to changes of the plug geometry and to pore water pressure in the rock-concrete interface was examined. The results indicate that the displacements in the plug will be within reasonable ranges but the stresses may locally be high enough that they exceed acceptable levels. However, they can be reduced by choice of advantageous plug geometry and by having a good rock-concrete bond. The results also show that the stress additions in the rock due to the thermal load may yield stresses that locally exceed the spalling strength of the rock. At most locations, however, the rock stresses will amount at lower levels. It was concluded that, with choice of an appropriate design, the tapered plug seems to be an applicable concept for plugging of deposition tunnels. It was also concluded that further studies of the tapered plug concept should use material properties parameter values for low-pH concrete. Further, they should also

  18. Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

    Directory of Open Access Journals (Sweden)

    Hamid Farahani

    2014-04-01

    Full Text Available Humidity measurement is one of the most significant issues in various areas of applications such as instrumentation, automated systems, agriculture, climatology and GIS. Numerous sorts of humidity sensors fabricated and developed for industrial and laboratory applications are reviewed and presented in this article. The survey frequently concentrates on the RH sensors based upon their organic and inorganic functional materials, e.g., porous ceramics (semiconductors, polymers, ceramic/polymer and electrolytes, as well as conduction mechanism and fabrication technologies. A significant aim of this review is to provide a distinct categorization pursuant to state of the art humidity sensor types, principles of work, sensing substances, transduction mechanisms, and production technologies. Furthermore, performance characteristics of the different humidity sensors such as electrical and statistical data will be detailed and gives an added value to the report. By comparison of overall prospects of the sensors it was revealed that there are still drawbacks as to efficiency of sensing elements and conduction values. The flexibility offered by thick film and thin film processes either in the preparation of materials or in the choice of shape and size of the sensor structure provides advantages over other technologies. These ceramic sensors show faster response than other types.

  19. Development of mechanical design technology for integral reactor

    Energy Technology Data Exchange (ETDEWEB)

    Park, Keun Bae; Choi, Suhn; Kim, Kang Soo; Kim, Tae Wan; Jeong, Kyeong Hoon; Lee, Gyu Mahn

    1999-03-01

    While Korean nuclear reactor strategy seems to remain focused on the large capacity power generation, it is expected that demand of small and medium size reactor will arise for multi-purpose application such as small capacity power generation, co-generation and sea water desalination. With this in mind, an integral reactor SMART is under development. Design concepts, system layout and types of equipment of integral reactor are significantly different from those of loop type reactor. Conceptual design development of mechanical structures of integral reactor SMART is completed through the first stage of the project. Efforts were endeavored for the establishment of design basis and evaluation of applicable codes and standards. Design and functional requirements of major structural components were setup, and three dimensional structural modelling of SMART reactor vessel assembly was prepared. Also, maintenance and repair scheme as well as preliminary fabricability evaluation were carried out. Since small integral reactor technology includes sensitive technologies and know-how's, it is hard to achieve systematic and comprehensive technology transfer from nuclear-advanced countries. Thus, it is necessary to develop the related design technology and to verify the adopted methodologies through test and experiments in order to assure the structural integrity of reactor system. (author)

  20. A pilot study to assess the feasibility and accuracy of using haptic technology to occlude digital dental models.

    Science.gov (United States)

    Wu, Wen; Cen, Yuhai; Hong, Yang; Keeling, Andrew; Khambay, Balvinder

    2016-03-01

    The use of haptic technology as an adjunct to clinical teaching is well documented in medicine and dentistry. However its application in clinical patient care is less well documented. The aim of this pilot study was to determine the feasibility and accuracy of using a haptic device to determine the occlusion of virtual dental models. The non-occluded digital models of 20 pre-treatment individuals were chosen from the database of Faculty of Dentistry, The University of Hong Kong. Following minimal training with the haptic device (Geomagic(®) Touch™), the upper model was occluded with the lower model until a stable occlusion was achieved. Seven landmarks were placed on each of the corners of the original and haptically aligned upper model bases. The absolute distance between the landmarks was calculated. Intra- and inter-operator errors were assessed. The absolute distance between the 7 landmarks for each original and corresponding haptically aligned model was 0.54 ± 0.40 mm in the x-direction (lateral), 0.73 ± 0.63 mm in the y-direction (anterior-posterior) and 0.55 ± 0.48 mm in the z-direction (inferior-superior). Based on initial collision detection to prevent interpenetration of the upper and lower digital model surfaces, and contact form resistance during contact, it is possible to use a haptic device to occlude digital study models. The use of 3D digital study models is routine, but new problems arise, such as the lack of "touch" in a virtual environment. Occluding study models requires the sense of touch. For the first time, using haptic technology, it is possible to occlude digital study models in a virtual environment. Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. Microbial fuel cell coupled to biohydrogen reactor: a feasible technology to increase energy yield from cheese whey.

    Science.gov (United States)

    Wenzel, J; Fuentes, L; Cabezas, A; Etchebehere, C

    2017-02-20

    An important pollutant produced during the cheese making process is cheese whey which is a liquid by-product with high content of organic matter, composed mainly by lactose and proteins. Hydrogen can be produced from cheese whey by dark fermentation but, organic matter is not completely removed producing an effluent rich in volatile fatty acids. Here we demonstrate that this effluent can be further used to produce energy in microbial fuel cells. Moreover, current production was not feasible when using raw cheese whey directly to feed the microbial fuel cell. A maximal power density of 439 mW/m(2) was obtained from the reactor effluent which was 1000 times more than when using raw cheese whey as substrate. 16S rRNA gene amplicon sequencing showed that potential electroactive populations (Geobacter, Pseudomonas and Thauera) were enriched on anodes of MFCs fed with reactor effluent while fermentative populations (Clostridium and Lactobacillus) were predominant on the MFC anode fed directly with raw cheese whey. This result was further demonstrated using culture techniques. A total of 45 strains were isolated belonging to 10 different genera including known electrogenic populations like Geobacter (in MFC with reactor effluent) and known fermentative populations like Lactobacillus (in MFC with cheese whey). Our results show that microbial fuel cells are an attractive technology to gain extra energy from cheese whey as a second stage process during raw cheese whey treatment by dark fermentation process.

  2. A new telemonitoring system intended for chronic heart failure patients using mobile telephone technology--feasibility study.

    Science.gov (United States)

    Winkler, Sebastian; Schieber, Michael; Lücke, Stephanie; Heinze, Peter; Schweizer, Thomas; Wegertseder, Dominik; Scherf, Michael; Nettlau, Herbert; Henke, Sascha; Braecklein, Martin; Anker, Stefan D; Koehler, Friedrich

    2011-11-17

    Remote monitoring is one modality of structured care in chronic heart failure. The purpose of this study was to evaluate the feasibility of a new wireless telemonitoring system via a mobile phone network. Portable home devices for electrocardiogram, blood pressure, body weight and self-assessment measurements were connected (via Bluetooth) to a personal digital assistant (PDA) that performs automated encrypted transmission via mobile phone. Two telemedical centres were set-up. 30 healthy volunteers were enrolled and followed for 26 days. A total of 4002 single measurements were taken, 133 ± 37 per person. No data was lost or incorrectly allocated. 880 of 937 (94%) of the ECG recordings had sufficient diagnostic quality for rhythm analysis and single beat measurements. 50 continuous ECG-streams (312 min) without disruption were performed. Total system availability was 96.6%, including that of the mobile phone network. Mobile phone technology is suitable for continuous and secure medical data transmission. To evaluate the clinical use in chronic heart failure patients, a large multicentre randomized controlled trial (ClinicalTrials.gov Identifier: NCT00543881) was started. Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.

  3. Innovative Mechanical Engineering Technologies, Equipment and Materials-2013

    Science.gov (United States)

    Ilnaz Izailovich, Fayrushin; Nail Faikovich, Kashapov; Mahmut Mashutovich, Ganiev

    2014-12-01

    In the period from 25 to 27 September 2013 the city of Kazan hosted the International Scientific Conference "Innovative mechanical engineering technologies, equipment and materials - 2013" (IRTC "IMETEM - 2013"). The conference was held on the grounds of "Kazanskaya Yarmarka" (Kazan). The conference plenary meeting was held with the participation of the Republic of Tatarstan, breakout sessions, forum "Improving the competitiveness and efficiency of engineering enterprises in the WTO" and a number of round tables. Traditionally, the event was followed by the 13th International specialized exhibition "Engineering. Metalworking. Kazan ", in which were presented the development of innovative enterprises in the interests of the Russian Federation of Industry of Republic of Tatarstan, to support the "Foundation for Assistance to Small Innovative Enterprises in Science and Technology" and the 8th specialized exhibition "TechnoWelding". Kashapov Nail, D.Sc., professor (Kazan Federal University)

  4. FEASIBILITY AND FINANCIAL ISSUES OF CLEAN PROJECT DEVELOPMENT MECHANISM IN ARGENTINA

    Directory of Open Access Journals (Sweden)

    García Fronti, Inés

    2013-01-01

    Full Text Available The objective of the research is to determine the current status and perspectives presented in Argentina in 2011 for different stakeholders regarding the development, execution and implementation of projects of clean development mechanism (CDM under the Kioto Protocol, with emphasis on the analysis of accounting issues.In the Argentinean research there is an analysis of the accounting issues under discussion and -taking as theirtory the Brazilian study mentioned- has surveyed and interviewed stakeholders belonging to government agencies, professional bodies such as councils accounting professionals in economics from different jurisdictions, academics, consultants and companies that deal or CDM projects plan to address issues relating to general and their views on potential regulations from bodies of the accounting profession and/or governmental and motivation of business and accounting issues of CDM projects such as moments of recognition of accounting entries and the different forms of the same recognition. The results showed that knowledge on the subject of stakeholders is initial but is possible an important increase in the future, accompanied by the development in Argentina of such projects.

  5. Retrograde resonances in compact multi-planetary systems: a feasible stabilizing mechanism

    CERN Document Server

    Gayon, Julie

    2008-01-01

    Multi-planet systems detected until now are in most cases characterized by hot-Jupiters close to their central star as well as high eccentricities. As a consequence, from a dynamical point of view, compact multi-planetary systems form a variety of the general N-body problem (with N >= 3), whose solutions are not necessarily known. Extrasolar planets are up to now found in prograde (i.e. direct) orbital motions about their host star and often in mean-motion resonances (MMR). In the present paper, we investigate a theoretical alternative suitable for the stability of compact multi-planetary systems. When the outer planet moves on a retrograde orbit in MMR with respect to the inner planet, we find that the so-called retrograde resonances present fine and characteristic structures particularly relevant for dynamical stability. We show that retrograde resonances and their resources open a family of stabilizing mechanisms involving specific behaviors of apsidal precessions. We also point up that for particular orbi...

  6. End-stage heart failure and mechanical circulatory support: feasibility of discharge from hospital.

    Science.gov (United States)

    Oosterom, A; de Jonge, N; Kirkels, J H; Rodermans, B F M; Sukkel, E; Klöpping, C; Ramjankhan, F; Lahpor, J R

    2007-01-01

    BACKGROUND.: Due to the shortage of donor hearts, mechanical circulatory support is increasingly being used as a bridge to transplantation. In order to allow for more widespread use of ventricular assist devices it is mandatory that patients are not continuously hospitalised. We present the results of our experience with patients with end-stage heart failure, discharged from hospital after implantation of a ventricular assist device and followed in an outpatient setting. METHODS.: After an intensive training and education programme, focusing on the management of the percutaneous driveline and instructions on how to handle in case of an alarm or malfunction of the device, patients were discharged. They were followed in the outpatient department. All regular and unplanned visits were registered, including readmissions. RESULTS.: Twenty-seven patients treated with a ventricular assist device were discharged from hospital. There were 37 extra visits, of these, 27 were device related resulting in 21 readmissions (0.78/patient). We treated eight infectious episodes in four patients, all device related. Furthermore seven thromboembolic episodes occurred in four patients. One patient died because of multiorgan failure seven weeks after he was readmitted with an urosepsis. In our experience of 11.4 patient years at home while on the device, only 5% of the time was spent in hospital for complications. In comparison with patients on an assist device who stayed in hospital until transplantation, there were no more complications. CONCLUSION.: This study demonstrates that patients with end-stage heart failure, treated with a ventricular assist device, can be safely discharged from hospital, with an acceptable rate of readmissions. It results in a fair quality of life, with a high degree of independence of the patient. (Neth Heart J 2007;15:45-50.).

  7. Affect and technology acceptance: A test of two mechanisms

    DEFF Research Database (Denmark)

    Scholderer, Joachim; Grunert, Klaus G.; Søndergaard, Helle Alsted

    to strong changes in consumer attitudes (effect size d = .40). Furthermore, preferences for genetically modified products were found to be mainly dependent on the quality of the product participants had tried. Both effects were robust under contextual variations. Results are discussed in terms of theory...... GM organisms or their derivatives. In the absence of product experience, consumers tend to evaluate this technology by means of affective mechanisms, setting it in relation to other, even more abstract and general socio-political attitudes. Previous research has shown that these attitudes...

  8. The Shared Decision Making Frontier: a Feasibility and Usability Study for Managing Non-Critical Chronic Illness by Combining Behavioural & Decision Theory with Online Technology.

    Science.gov (United States)

    Russell, Amina; Van Woensel, William; Abidi, Samina Raza

    2015-01-01

    The objective of this study is to determine if shared decisions for managing non-critical chronic illness, made through an online biomedical technology intervention, us feasible and usable. The technology intervention incorporates behavioural and decision theories to increase patient engagement, and ultimately long term adherence to health behaviour change. We devised the iheart web intervention as a "proof of concept" in five phases. The implementation incorporates the Vaadin web application framework, Drools, EclipseLink and a MySQL database. Two-thirds of the study participants favoured the technology intervention, based on Likert-scale questions from a post-study questionnaire. Qualitative analysis of think aloud feedback, video screen captures and open-ended questions from the post-study questionnaire uncovered six main areas or themes for improvement. We conclude that online shared decisions for managing a non-critical chronic illness are feasible and usable through the iheart web intervention.

  9. Microfluidic Technology: Uncovering the Mechanisms of Nanocrystal Nucleation and Growth.

    Science.gov (United States)

    Lignos, Ioannis; Maceiczyk, Richard; deMello, Andrew J

    2017-05-16

    The controlled and reproducible formation of colloidal semiconductor nanocrystals (or quantum dots) is of central importance in nanoscale science and technology. The tunable size- and shape-dependent properties of such materials make them ideal candidates for the development of efficient and low-cost displays, solar cells, light-emitting devices, and catalysts. The formidable difficulties associated with the macroscale preparation of semiconductor nanocrystals (possessing bespoke optical and chemical properties) result from the fact that underlying reaction mechanisms are complex and that the reactive environment is difficult to control. Automated microfluidic reactors coupled with monitoring systems and optimization algorithms aim to elucidate complex reaction mechanisms that govern both nucleation and growth of nanocrystals. Such platforms are ideally suited for the efficient optimization of reaction parameters, assuring the reproducible synthesis of nanocrystals with user-defined properties. This Account aims to inform the nanomaterials community about how microfluidic technologies can supplement flask experimentation for the ensemble investigation of formation mechanisms and design of semiconductor nanocrystals. We present selected studies outlining the preparation of quantum dots using microfluidic systems with integrated analytics. Such microfluidic reaction systems leverage the ability to extract real-time information regarding optical, structural, and compositional characteristics of quantum dots during nucleation and growth stages. The Account further highlights our recent research activities focused on the development and application of droplet-based microfluidics with integrated optical detection systems for the efficient and rapid screening of reaction conditions and a better understanding of the mechanisms of quantum dot synthesis. We describe the features and operation of fully automated microfluidic reactors and their subsequent application to high

  10. A new mechanism for energy conservation technology services

    Energy Technology Data Exchange (ETDEWEB)

    Yan, Feng

    1996-12-31

    In the ninth-five year plan of China, the socialist market economy model will be developed. In the stage of transferring from planning economy to market economy, the energy conservation technology services industry in China has met new challenges. Over the past ten to fifteen years, there has developed a new mechanism for financing energy efficiency investments in market economies. The process is simple. After inspecting an enterprise or an entity for energy saving opportunities, an Energy Service Company (ESCO) which business aimed at making money will review the recommended energy conservation opportunities with the enterprise or the entity (user) and implement those measures acceptable to the user at no front end cost to the user. The ESCO then guarantees that the energy savings will cover the cost of the capital renovations using the Performance Contracting.

  11. Development of mechanical structure design technology for LMR

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, Bong; Lee, Jae Han; Joo, Young Sang [and others

    2000-05-01

    In this project, fundamentals for conceptual design of mechanical structure system for LMR are independently established. The research contents are as follow; at first, conceptual design for SSC, design integration of interfaces, design consistency to keep functions and interfaces by developing arrangement of reactor system and 3 dimensional concept drawings, development and revision of preliminary design requirements and structural design basis, and evaluation of structural integrity for SSC following structural design criteria to check the conceptual design to be proper, at second, development of high temperature structure design and analysis technology and establishment of high temperature structural analysis codes and scheme, development of seismic isolation design concept to reduce seismic design loads to SCC and establishment of seismic analysis codes and scheme.

  12. The technology of mobile robot with articulated crawler mechanism

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Seung Ho; Kim, Byung Soo; Kim, Chang Hoi; Hwang, Suk Yong; Suh, Yong Chil; Lee, Yung Kwang; Sin, Jae Ho [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1995-01-01

    The main application of a mobile robot are to do the inspection and maintenance tasks in the primary and auxiliary building, and to meet with the radiological emergency response in nuclear power plant. Our project to develop crawler-type mobile robot has been divided into 3 phases. In 1 st phase, the-state-of-the-arts of mobile robot technology were studied and analyzed. And then the technical report `development of mobile robot technology for the light work` was published on July, 1993. In current phase, the articulated crawler type mobile robot named as ANDROS Mark VI was purchased to evaluate deeply its mechanism and control system. Then we designed the autonomous track surface, to get the inclination angle of robot, and to control the front and rear auxiliary track autonomously during climbing up and down stairs. And also, the autonomous stair-climbing algorithm has been developed to going over stairs with high stability. For the final phase, the advanced model of articulated crawler type mobile robot is going to be developed. (Author) 13 refs., 30 figs., 12 tabs.

  13. Fluid Mechanics of Biological Surfaces and their Technological Application

    Science.gov (United States)

    Bechert, D. W.; Bruse, M.; Hage, W.; Meyer, R.

    A survey is given on fluid-dynamic effects caused by the structure and properties of biological surfaces. It is demonstrated that the results of investigations aiming at technological applications can also provide insights into biophysical phenomena. Techniques are described both for reducing wall shear stresses and for controlling boundary-layer separation. (a) Wall shear stress reduction was investigated experimentally for various riblet surfaces including a shark skin replica. The latter consists of 800 plastic model scales with compliant anchoring. Hairy surfaces are also considered, and surfaces in which the no-slip condition is modified. Self-cleaning surfaces such as that of lotus leaves represent an interesting option to avoid fluid-dynamic deterioration by the agglomeration of dirt. An example of technological implementation is discussed for riblets in long-range commercial aircraft. (b) Separation control is also an important issue in biology. After a few brief comments on vortex generators, the mechanism of separation control by bird feathers is described in detail. Self-activated movable flaps (=artificial bird feathers) represent a high-lift system enhancing the maximum lift of airfoils by about 20%. This is achieved without perceivable deleterious effects under cruise conditions. Finally, flight experiments on an aircraft with laminar wing and movable flaps are presented.

  14. A new telemonitoring system intended for chronic heart failure patients using mobile telephone technology--feasibility study

    National Research Council Canada - National Science Library

    Winkler, Sebastian; Schieber, Michael; Lücke, Stephanie; Heinze, Peter; Schweizer, Thomas; Wegertseder, Dominik; Scherf, Michael; Nettlau, Herbert; Henke, Sascha; Braecklein, Martin; Anker, Stefan D; Koehler, Friedrich

    Remote monitoring is one modality of structured care in chronic heart failure. The purpose of this study was to evaluate the feasibility of a new wireless telemonitoring system via a mobile phone network...

  15. Neurofeedback of slow cortical potentials: neural mechanisms and feasibility of a placebo-controlled design in healthy adults

    Directory of Open Access Journals (Sweden)

    Holger eGevensleben

    2014-12-01

    Full Text Available To elucidate basic mechanisms underlying neurofeedback we investigated neural mechanisms of training of slow cortical potentials by considering EEG- and fMRI. Additionally, we analyzed the feasibility of a double-blind, placebo-controlled design in NF research based on regulation performance during treatment sessions and self-assessment of the participants. Twenty healthy adults participated in 16 sessions of SCP training: 9 participants received regular SCP training, 11 participants received sham feedback. At three time points (pre, intermediate, post fMRI and EEG/ERP-measurements were conducted during a continuous performance test (CPT. Performance-data during the sessions (regulation performance in the treatment group and the placebo group were analyzed. Analysis of EEG-activity revealed in the SCP group a strong enhancement of the CNV (electrode Cz at the intermediate assessment, followed by a decrease back to baseline at the post-treatment assessment. In contrast, in the placebo group a continuous but smaller increase of the CNV could be obtained from pre to post assessment. The increase of the CNV in the SCP group at intermediate testing was superior to the enhancement in the placebo group. The changes of the CNV were accompanied by a continuous improvement in the test performance of the CPT from pre to intermediate to post assessment comparable in both groups. The change of the CNV in the SCP group is interpreted as an indicator of neural plasticity and efficiency while an increase of the CNV in the placebo group might reflect learning and improved timing due to the frequent task repetition.In the fMRI analysis evidence was obtained for neuronal plasticity. After regular SCP neurofeedback activation in the posterior parietal cortex decreased from the pre- to the intermediate measurement and increased again in the post measurement, inversely following the U-shaped increase and decrease of the tCNV EEG amplitude in the SCP-trained group

  16. A feasibility pilot study on the use of complementary therapies delivered via mobile technologies on Icelandic surgical patients’ reports of anxiety, pain, and self-efficacy in healing

    OpenAIRE

    Hansen, Margaret M

    2015-01-01

    Background Complementary therapies (CT), such as relaxation technique, massage, guided imagery, and accupuncture have shown to benefit patients undergoing surgery. The aim of this study was to determine the feasibility of using audio relaxation technique (ART), music intervention (MI), nature video application with music (NVAM), and nature video application without music (NVA) delivered via mobile technologies in a clinical setting. Secondary, the effects of ART, MI, NVAM and NVA on patients’...

  17. An Eco-Design and Innovation Feasibility Study of Low-Carbon Illumination Technologies for the Tertiary Sector in Denmark

    DEFF Research Database (Denmark)

    Bjarklev, Araceli

    at the same time, focusing on the structural and qualitative elements of the technologies. Thus, this analysis takes into consideration consumer preferences, policy instruments, and innovation system structural conditions as the material or hardware technological aspects to be considered when designing...... the product-service system, where the new technological improvements are assessed in relation to consumers’ needs and relevant technological and institutional capacity. Finally, this study uses a technological-innovation system perspective to assess existing conditions for the establishment, further...

  18. Feasibility of Cathode Surface Coating Technology for High-Energy Lithium-ion and Beyond-Lithium-ion Batteries.

    Science.gov (United States)

    Kalluri, Sujith; Yoon, Moonsu; Jo, Minki; Liu, Hua Kun; Dou, Shi Xue; Cho, Jaephil; Guo, Zaiping

    2017-03-02

    Cathode material degradation during cycling is one of the key obstacles to upgrading lithium-ion and beyond-lithium-ion batteries for high-energy and varied-temperature applications. Herein, we highlight recent progress in material surface-coating as the foremost solution to resist the surface phase-transitions and cracking in cathode particles in mono-valent (Li, Na, K) and multi-valent (Mg, Ca, Al) ion batteries under high-voltage and varied-temperature conditions. Importantly, we shed light on the future of materials surface-coating technology with possible research directions. In this regard, we provide our viewpoint on a novel hybrid surface-coating strategy, which has been successfully evaluated in LiCoO2 -based-Li-ion cells under adverse conditions with industrial specifications for customer-demanding applications. The proposed coating strategy includes a first surface-coating of the as-prepared cathode powders (by sol-gel) and then an ultra-thin ceramic-oxide coating on their electrodes (by atomic-layer deposition). What makes it appealing for industry applications is that such a coating strategy can effectively maintain the integrity of materials under electro-mechanical stress, at the cathode particle and electrode- levels. Furthermore, it leads to improved energy-density and voltage retention at 4.55 V and 45 °C with highly loaded electrodes (≈24 mg.cm(-2) ). Finally, the development of this coating technology for beyond-lithium-ion batteries could be a major research challenge, but one that is viable. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  19. The innovational mining technology of fully mechanized mining on thin coal seam

    Energy Technology Data Exchange (ETDEWEB)

    Sheng, G.; Sun, Q.; Song, H. [China Ocean University, Qingdao (China)

    2007-03-15

    The paper describes the innovational fully mechanized mining technology practised on thin coal seams in Tianchen coal mine. This mining technology combined fully mechanized mining and orthodox working face mining. The technology is suitable for mining of particularly thin coal seams. 7 refs., 1 fig., 1 tab.

  20. Exploring Technology Supported Collaborative and Cooperative Group Formation Mechanisms

    Science.gov (United States)

    Carapina, Mia; Boticki, Ivica

    2015-01-01

    This paper reflects on the systematic literature review paper (in progress), which analyzes technology enhanced collaborative and cooperative learning in elementary education worldwide from 2004 to 2015, focusing on the exploration of technology mediated group formation. The review paper reports on only a few cases of technology supported methods…

  1. A Feasibility Study of Sustainable Distributed Generation Technologies to Improve the electrical System on the Duck Valley Reservation

    Energy Technology Data Exchange (ETDEWEB)

    Herman Atkins, Shoshone-Paiute; Mark Hannifan, New West Technologies

    2005-06-30

    A range of sustainable energy options were assessed for feasibility in addressing chronic electric grid reliability problems at Duck Valley IR. Wind power and building energy efficiency were determined to have the most merit, with the Duck Valley Tribes now well positioned to pursue large scale wind power development for on- and off-reservation sales.

  2. Feasibility, Acceptability, and Preliminary Effectiveness of a Peer-Delivered and Technology Supported Self-Management Intervention for Older Adults with Serious Mental Illness.

    Science.gov (United States)

    Fortuna, Karen L; DiMilia, Peter R; Lohman, Matthew C; Bruce, Martha L; Zubritsky, Cynthia D; Halaby, Mitch R; Walker, Robert M; Brooks, Jessica M; Bartels, Stephen J

    2017-09-26

    To assess the feasibility, acceptability, and preliminary effectiveness of a peer-delivered and technology supported integrated medical and psychiatric self-management intervention for older adults with serious mental illness. Ten older adults with serious mental illness (i.e., schizophrenia, schizoaffective disorder, bipolar disorder, or major depressive disorder) and medical comorbidity (i.e., cardiovascular disease, obesity, diabetes, chronic obstructive pulmonary disease, hypertension, and/or high cholesterol) aged 60 years and older received the PeerTECH intervention in their homes. Three certified peer specialists were trained to deliver PeerTECH. Data were collected at baseline, one-month, and three-month. The pilot study demonstrated that a three-month, peer-delivered and technology-supported integrated medical and psychiatric self-management intervention ("PeerTECH") was experienced by peer specialists and participants as feasible and acceptable. PeerTECH was associated with statistically significant improvements in psychiatric self-management. In addition, pre/post, non-statistically significant improvements were observed in self-efficacy for managing chronic health conditions, hope, quality of life, medical self-management skills, and empowerment. This pre/post pilot study demonstrated it is possible to train peers to use technology to deliver an integrated psychiatric and medical self-management intervention in a home-based setting to older adults with serious mental illness with fidelity. These findings provide preliminary evidence that a peer-delivered and technology-supported intervention designed to improve medical and psychiatric self-management is feasible, acceptable, and is potentially associated with improvements in psychiatric self-management, self-efficacy for managing chronic health conditions, hope, quality of life, medical self-management skills, and empowerment with older adults with serious mental illness and chronic health conditions.

  3. A New Adaptive Home-based Exercise Technology among Older Adults Living in Nursing Home: A Pilot Study on Feasibility, Acceptability and Physical Performance.

    Science.gov (United States)

    Valiani, V; Lauzé, M; Martel, D; Pahor, M; Manini, T M; Anton, S; Aubertin-Leheudre, M

    2017-01-01

    To explore the feasibility and acceptability of a new home-based exercise technology among older adults and to evaluate its efficacy on physical performance measures. Longitudinal clinical trial. Oak Hammock at the University of Florida, a nursing home located in Gainesville, Florida. Twelve pre-disabled older adults (≥75 years) living in a nursing home with a Short Physical Performance Battery (SPPB) score between 6 and 9 and no diagnosis of dementia. Thirty minutes of light intensity exercise (aerobic, strength and balance) two times per week for four weeks using a home-based physical activity technology called Jintronix. Feasibility and acceptability were assessed through a 9-item self-administered questionnaire and by exploring the percentage of quality of movements and time performing exercise which was calculated automatically by Jintronix technology. Physical performance measures were assessed through the SPPB score at baseline, after 4 weeks of intervention and after 3 months from the completion of the intervention. Twelve older adults (80.5±4.2 years old) performed light intensity exercise with Jintronix for a total of 51.9±7.9 minutes per week. Participants reached 87% score of quality of movements in strength and balance exercises, a global appreciation score of 91.7% and a global difficulty score of 36%. Compared to baseline, there was a significant improvement in SPPB score at the end of the intervention and at 3 months following the completion of the exercise program (0.67±0.98 and 1.08±0.99 respectively, p-value technology is feasible and acceptable among pre-disabled older adults without dementia living in nursing home and is beneficial in improving their physical performance.

  4. Project to promote the development of global environmental industry technology. Feasibility study of research exchanges; Chikyu kankyo sangyo gijutsu kaihatsu suishin jigyo. Kenkyu koryu kanosei chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    In fiscal 1995, three teams were organized to study the following subjects: plant genetic and cellular engineering in relation to drought stress; simulation models of global environment for accurate assessment and prediction; the APEC Virtual Center for environmental technology exchange. The team studying plant genetic and cellular engineering in relation to drought stress visited the Department of Botany, Hebrew University of Jerusalem, Israel, the Jacob Blaustein Institute for Desert Research, Ben-Grunion University, Israel, the Department of Biochemistry and the Office of Arid Lands Studies, Arizona University, the U.S. to survey the present and future trend of the study and feasibility of research exchanges. The team studying simulation models of global environment for accurate assessment and prediction visited Yale University, Massachusetts Institute of Technology, Electric Power Research Institute, and Battle Research Institute in the U.S. to survey feasibility of research exchanges. The team studying the APEC Virtual Center for environmental technology exchange visited institutes in ASEAN countries to survey needs for the Virtual Center. 312 refs., 74 figs., 17 tabs.

  5. A Feasibility Study of Biogas Technology to Solving Peri-urban Sanitation Problems in Developing Countries. A Case for Harare, Zimbabwe

    Directory of Open Access Journals (Sweden)

    G Sibanda

    2013-06-01

    Full Text Available This study investigated the feasibility of converting organic waste into energy using biogas technology to address sanitation problems in peri-urban suburbs of Harare, Zimbabwe.These suburbs with an estimated population of 156.975 are unique in that they are not connected to the Harare main water sewer system. A baseline survey was conducted to determine the quantity of biodegradable human and kitchen waste (N=60. Biodigester sizing and costing was done for various scenarios mainly household standalone, single centralised suburb and combined suburbs centralised biogas models. In addition potential biogas conversion to electricity was done for single centralised suburb and combined suburbs centralised biogas models. This was followed by a cost benefit analysis of employing combined suburbs biogas technology. A combined suburbs centralised biogas model was found to be the most feasible scenario producing 7378 m3 of biogas per day with electricity production capacity of 384 kW .There was a potential of wood savings of 6129 tonnes/year, paraffin savings of 2.556 tonnes/year and greenhouse benefits of 980 tonnes of CO2 equivalent emissions/ year and which would attract U$2940 from carbon credits sales per year. The study recommended the adoption of the biogas technology because of its potential toaddress both economic and sanitation challenges being faced by local authorities in developing countries particularly, improved hygienic conditions, energy supply chronic epidemics and sewerreticulation.

  6. Soil and Sediment remediation, mechanisms, technologies and applications

    NARCIS (Netherlands)

    Lens, P.N.L.; Grotenhuis, J.T.C.; Malina, G.; Tabak, H.H.

    2005-01-01

    Technologies for the treatment of soils and sediments in-situ (landfarming, bioscreens, bioventing, nutrient injection, phytoremediation) and ex-situ (landfarming, bio-heap treatment, soil suspension reactor) will be discussed. The microbiological, process technological and socio-economical aspects

  7. Soil and Sediment remediation, mechanisms, technologies and applications

    NARCIS (Netherlands)

    Lens, P.N.L.; Grotenhuis, J.T.C.; Malina, G.; Tabak, H.H.

    2005-01-01

    Technologies for the treatment of soils and sediments in-situ (landfarming, bioscreens, bioventing, nutrient injection, phytoremediation) and ex-situ (landfarming, bio-heap treatment, soil suspension reactor) will be discussed. The microbiological, process technological and socio-economical aspects

  8. Surgical Navigation Technology Based on Augmented Reality and Integrated 3D Intraoperative Imaging: A Spine Cadaveric Feasibility and Accuracy Study.

    Science.gov (United States)

    Elmi-Terander, Adrian; Skulason, Halldor; Söderman, Michael; Racadio, John; Homan, Robert; Babic, Drazenko; van der Vaart, Nijs; Nachabe, Rami

    2016-11-01

    A cadaveric laboratory study. The aim of this study was to assess the feasibility and accuracy of thoracic pedicle screw placement using augmented reality surgical navigation (ARSN). Recent advances in spinal navigation have shown improved accuracy in lumbosacral pedicle screw placement but limited benefits in the thoracic spine. 3D intraoperative imaging and instrument navigation may allow improved accuracy in pedicle screw placement, without the use of x-ray fluoroscopy, and thus opens the route to image-guided minimally invasive therapy in the thoracic spine. ARSN encompasses a surgical table, a motorized flat detector C-arm with intraoperative 2D/3D capabilities, integrated optical cameras for augmented reality navigation, and noninvasive patient motion tracking. Two neurosurgeons placed 94 pedicle screws in the thoracic spine of four cadavers using ARSN on one side of the spine (47 screws) and free-hand technique on the contralateral side. X-ray fluoroscopy was not used for either technique. Four independent reviewers assessed the postoperative scans, using the Gertzbein grading. Morphometric measurements of the pedicles axial and sagittal widths and angles, as well as the vertebrae axial and sagittal rotations were performed to identify risk factors for breaches. ARSN was feasible and superior to free-hand technique with respect to overall accuracy (85% vs. 64%, P < 0.05), specifically significant increases of perfectly placed screws (51% vs. 30%, P < 0.05) and reductions in breaches beyond 4 mm (2% vs. 25%, P < 0.05). All morphometric dimensions, except for vertebral body axial rotation, were risk factors for larger breaches when performed with the free-hand method. ARSN without fluoroscopy was feasible and demonstrated higher accuracy than free-hand technique for thoracic pedicle screw placement. N/A.

  9. Microencapsulation: concepts, mechanisms, methods and some applications in food technology

    Directory of Open Access Journals (Sweden)

    Pablo Teixeira da Silva

    2014-07-01

    Full Text Available Microencapsulation is a process in which active substances are coated by extremely small capsules. It is a new technology that has been used in the cosmetics industry as well as in the pharmaceutical, agrochemical and food industries, being used in flavors, acids, oils, vitamins, microorganisms, among others. The success of this technology is due to the correct choice of the wall material, the core release form and the encapsulation method. Therefore, in this review, some relevant microencapsulation aspects, such as the capsule, wall material, core release forms, encapsulation methods and their use in food technology will be briefly discussed.

  10. Feasibility Study on Determining Focal Mechanism Solutions of Small Earthquakes Using the Velocity Amplitude Ratio of P-and S-Waves

    Institute of Scientific and Technical Information of China (English)

    Zhang Yongjiu; Cheng Wanzheng

    2008-01-01

    The focal mechanism parameters of small earthquakes are determined by the maximum velocity and displacement amplitude ratio of the direct P-and S-waves recorded by digital stations. The displacement is obtained from the velocity by emulation, and the two results are compared and analyzed. Results of the oretical analysis and practical measurement indicate that the two results of velocity and displacement are consistent, and it is feasible that the maximum displacement amplitude ratio be replaced by the maximum velocity amplitude ratio of the direct P-and S-waves recorded by regional seismic networks when determining focal mechanism solutions of small earthquakes.

  11. Feasibility of integrating other federal information systems into the Global Network of Environment and Technology, GNET{reg_sign}

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-05-01

    The Global Environment and Technology Enterprise (GETE) of the Global Environment and Technology Foundation (GETF) has been tasked by the US Department of Energy`s (DOE), Federal Energy Technology Center (FETC) to assist in reducing DOE`s cost for the Global Network of Environment and Technology (GNET{reg_sign}). As part of this task, GETE is seeking federal partners to invest in GNET{reg_sign}. The authors are also seeking FETC`s commitment to serve as GNET`s federal agency champion promoting the system to potential agency partners. This report assesses the benefits of partnering with GNET{reg_sign} and provides recommendations for identifying and integrating other federally funded (non-DOE) environmental information management systems into GNET{reg_sign}.

  12. Feasibility of Applying Clean Development Mechanism and GHGs Emission Reductions in the Gold Mining Industry: A Case of Thailand

    OpenAIRE

    2015-01-01

    There is presently overwhelming scientific consensus that global climate change is indeed occurring, and that human activities are the primary driver. An increasingly resource and carbon constrained world will continue to pose formidable challenges to major industries, including mining. Understanding the implications of climate change mitigation for the mining industry, however, remains limited. This paper presents the results of a feasibility study on the implementation of a clean developmen...

  13. PS2-17: Diabetes Social Support Feasibility Pilot Study: Utilizing Mobile Technology and Self-Identified Supporters to Enhance Self-Monitoring of Blood Glucose

    Science.gov (United States)

    Robinson, Brandi; Roblin, Douglas; Hipkens, James; Vupputuri, Suma; McMahon, Kevin

    2010-01-01

    Background and Aims: Self-monitoring of blood glucose (SMBG) is associated with improved glycemic control among patients with type 2 diabetes, however, the practice of daily self-monitoring is not optimal. Telecommunications technology may improve adherence to recommended self-management practices by remotely transmitting automated reminders to motivate patients, and utilizing social networking for peer support. The purpose of this pilot study is to demonstrate the feasibility and usability of mobile technology and the potential added value of social support to improve SMBG frequency and glycemic control among adults with type 2 diabetes. Methods: Adults 25–74 years of age with type 2 DM and an average HbA1c > 8.0% were recruited from Kaiser Permanente Georgia (KPGA) and Oakhurst Medical Center (OMC, a community health clinic) to participate in a 3-month study using wireless technology. Enrollment sessions with presentations on SMBG techniques, use of the wireless technology, and motivational coaching to enhance social support were conducted in November 2009. During the subsequent 3-months, both diabetes patients and their self-selected supporters will receive text messages to their cell phones summarizing a patient’s SMBG frequency and levels. Participants and their supporters will attend a disenrollment session in February 2010 when feasibility and usability will be assessed in focus groups. Results: 6 of 161 eligible diabetes patients at KPGA and 9 of 28 eligible diabetes patients at OMC, and their self-selected supporters, consented to participate. The average age of diabetes patients was 49.3 years. 86.7% (N=13) were African-American; and 33.3% (N=5) were male. Five days after enrollment, 60% (N=9) of patients had connected their wireless transmitters and had current blood glucose data. Follow-up phone calls will be made to ensure that all participants are connected to the wireless technology within 10 days of the enrollment session. Conclusion

  14. Feasibility of a Personal Health Technology-Based Psychological Intervention for Men with Stress and Mood Problems: Randomized Controlled Pilot Trial

    Science.gov (United States)

    Kaipainen, Kirsikka; Lappalainen, Raimo; Hoffrén, Henna; Myllymäki, Tero; Kinnunen, Marja-Liisa; Mattila, Elina; Happonen, Antti P; Rusko, Heikki; Korhonen, Ilkka

    2013-01-01

    Background Work-related stress is a significant problem for both people and organizations. It may lead to mental illnesses such as anxiety and depression, resulting in increased work absences and disabilities. Scalable interventions to prevent and manage harmful stress can be delivered with the help of technology tools to support self-observations and skills training. Objective The aim of this study was to assess the feasibility of the P4Well intervention in treatment of stress-related psychological problems. P4Well is a novel intervention which combines modern psychotherapy (the cognitive behavioral therapy and the acceptance and commitment therapy) with personal health technologies to deliver the intervention via multiple channels, includinggroup meetings, Internet/Web portal, mobile phone applications, and personal monitoring devices. Methods This pilot study design was a small-scale randomized controlled trial that compared the P4Well intervention with a waiting list control group. In addition to personal health technologies for self-assessment, the intervention consisted of 3 psychologist-assisted group meetings. Self-assessed psychological measures through questionnaires were collected offline pre- and post-intervention, and 6 months after the intervention for the intervention group. Acceptance and usage of technology tools were measured with user experience questionnaires and usage logs. Results A total of 24 subjects were randomized: 11 participants were followed up in the intervention group (1 was lost to follow-up) and 12 participants did not receive any intervention (control group). Depressive and psychological symptoms decreased and self-rated health and working ability increased. All participants reported they had benefited from the intervention. All technology tools had active users and 10/11 participants used at least 1 tool actively. Physiological measurements with personal feedback were considered the most useful intervention component. Conclusions

  15. The Mechanism for Organising and Propelling Educational Technology in China

    Science.gov (United States)

    Yongqian, Liu; Dongyuan, Cheng; Xinli, Liu

    2010-01-01

    Having started early in the 1920s as a spontaneously launched educational activity by civil organisations under the influence of American audio-visual theory and practice, Chinese educational technology was later put under governmental management. This paper is composed of five parts covering mainly the historical development of educational…

  16. An investigation into the feasibility of locating portable medical devices using radio frequency identification devices and technology.

    Science.gov (United States)

    Britton, J

    2007-01-01

    Portable medical devices represent an important resource for assisting healthcare delivery. The movement of portable devices often results in them being unavailable when needed. Tracking equipment using radiofrequency identification technology/devices (RFID) may provide a promising solution to the problems encountered in locating portable equipment. An RFID technology trial was undertaken at Royal Alexandra Hospital, Paisley. This involved the temporary installation of three active readers and attaching actively transmitting radio frequency tags to different portable medical devices. The active readers and computer system were linked using a bespoke data network. Tags and readers from two separate manufacturers were tested. Reliability difficulties were encountered when testing the technology from the first manufacturer, probably due to the casing of the medical device interfering with the signal from the tag. Improved results were obtained when using equipment from the second manufacturer with an overall error rate of 12.3%. Tags from this manufacturer were specifically designed to overcome problems observed with the first system tested. Findings from this proof of concept trial suggest that RFID technology could be used to track the location of equipment in a hospital.

  17. Randomness in Quantum Mechanics: Philosophy, Physics and Technology

    CERN Document Server

    Bera, Manabendra Nath; Kuś, Marek; Mitchell, Morgan; Lewenstein, Maciej

    2016-01-01

    This progress report covers recent developments in the area of quantum randomness, which is an extraordinarily interdisciplinary area that belongs not only to physics, but also to philosophy, mathematics, computer science, and technology. For this reason the article contains three parts that will be essentially devoted to different aspects of quantum randomness, and even directed, although not restricted, to various audiences: a philosophical part, a physical part, and a technological part. For these reasons the article is written on an elementary level, combining very elementary and non-technical descriptions with a concise review of more advanced results. In this way readers of various provenances will be able to gain while reading the article.

  18. The feasibility of using 'bring your own device' (BYOD) technology for electronic data capture in multicentre medical audit and research.

    Science.gov (United States)

    Faulds, M C; Bauchmuller, K; Miller, D; Rosser, J H; Shuker, K; Wrench, I; Wilson, P; Mills, G H

    2016-01-01

    Large-scale audit and research projects demand robust, efficient systems for accurate data collection, handling and analysis. We utilised a multiplatform 'bring your own device' (BYOD) electronic data collection app to capture observational audit data on theatre efficiency across seven hospital Trusts in South Yorkshire in June-August 2013. None of the participating hospitals had a dedicated information governance policy for bring your own device. Data were collected by 17 investigators for 392 individual theatre lists, capturing 14,148 individual data points, 12, 852 (91%) of which were transmitted to a central database on the day of collection without any loss of data. BYOD technology enabled accurate collection of a large volume of secure data across multiple NHS organisations over a short period of time. Bring your own device technology provides a method for collecting real-time audit, research and quality improvement data within healthcare systems without compromising patient data protection.

  19. A feasibility study on using inkjet technology, micropumps, and MEMs as fuel injectors for bipropellant rocket engines

    OpenAIRE

    Glynne-Jones, Peter; Coletti, Michele; White, Neil M.; Gabriel, Stephen; Bramanti, Cristina

    2010-01-01

    Control over drop size distributions, injection rates, and geometrical distribution of fuel and oxidizer sprays in bi-propellant rocket engines has the potential to produce more efficient, more stable, less polluting rocket engines. This control also offers the potential of an engine that can be throttled, working efficiently over a wide range of output thrusts. Inkjet printing technologies, MEMS fuel atomizers, and piezoelectric injectors similar in concept to those used in diesel engines ar...

  20. Feasibility of using social networking technologies for health research among men who have sex with men: a mixed methods study.

    Science.gov (United States)

    Young, Sean D; Jaganath, Devan

    2014-01-01

    This study aims to assess the feasibility and acceptability of using social networking as a health research platform among men who have sex with men (MSM). Fifty-five MSM (primarily African American and Latino) were invited to join a "secret" group on the social networking website, Facebook. Peer leaders, trained in health education, posted health-related content to groups. The study and analysis used mixed (qualitative and quantitative) methods. Facebook conversations were thematically analyzed. Latino and African American participants voluntarily used social networking to discuss health-related knowledge and personal topics (exercise, nutrition, mental health, disease prevention, and substance abuse) with other group participants (N=564 excerpts). Although Latinos comprised 60% of the sample and African Americans 25.5%, Latinos contributed 82% of conversations and African Americans contributed only 15% of all conversations. Twenty-four percent of posts from Latinos and 7% of posts from African Americans were related to health topics. Results suggest that Facebook is an acceptable and engaging platform for facilitating and documenting health discussions for mixed methods research among MSM. An understanding of population differences is needed for crafting effective online social health interventions.

  1. EXPERIMENTAL STUDY OF MECHANISM AND TECHNOLOGY OF DIRECTED CRACK BLASTING

    Institute of Scientific and Technical Information of China (English)

    杨永琦; 高全臣; 于慕松; 张奇; 单仁亮; 杨仁树; 贾云峰

    1995-01-01

    The dynamic stress-fields and their distribution characteristics around boreholes in the directed crack blasting were measured with the dynamic photo-elastic laser holography apparatus and the uitradymamic measurement system. The directed crack mechanism and its mechanical model have been analysed and expounded. Through the 43 production experiments using slotted cartridges and the double triangle center cut-holes for directed crack blasting in underground rock drift, the resuits of which the rates of half-hole marks and efficiency of borehole,and the nonsmooth grades of the cut contours are 96%, 98% and 10cm respectively have been achieved.

  2. Analysis on Technology and Economic Feasibility of Air Conditioner%天然气空调的技术经济分析

    Institute of Scientific and Technical Information of China (English)

    何于涛; 魏敦崧; 刘敏飞

    2001-01-01

    文章简述了天然气应用于空调机组的技术概况,通过办公室空调冷热源的四种方案比较,分析了以天然气为驱动能源的空调机组的经济性,此外文章还就以天然气为驱动能源的空调机组对环境的影响以及在小区集中供冷供热中的应用前景进行了讨论.%This article briefs on the technology of applying NG to air conditioner. with the comparison between 4proposals on cooling and warming resources for office air conditioner, the economic feasibility of NG as drivingenergy is analyzed. Furthermore, this article discusses the environmental impact of air conditioner using NG,

  3. Game Mechanics and Bodily Interactions: Designing Interactive Technologies for Sports Training

    DEFF Research Database (Denmark)

    Jensen, Mads Møller

    Advancements in wearable and ubiquitous computing technologies have radically increased the possibilities for designing full-body human-computer interactions. Among this multitude of new bodily interaction possibilities are sports training technologies and bodily games. In terms of sports training...... activity as a control mechanism or the core game mechanic. While sports training technologies and bodily games build upon similar technologies and emanate from sports, they do not share focus. One focuses on measuring, monitoring and skill acquisition, while the other focuses on motivation, engagement...... and enjoyment. Thus, despite being two coexisting research areas, they do not extend or contribute to one another per se. However, bridging this gap by combining skill acquisition knowledge from sports training technologies with motivational game mechanics from bodily games holds great potential for designing...

  4. Game Mechanics and Bodily Interactions: Designing Interactive Technologies for Sports Training

    DEFF Research Database (Denmark)

    Jensen, Mads Møller

    2016-01-01

    Advancements in wearable and ubiquitous computing technologies have radically increased the possibilities for designing full-body human-computer interactions. Among this multitude of new bodily interaction possibilities are sports training technologies and bodily games. In terms of sports training...... activity as a control mechanism or the core game mechanic. While sports training technologies and bodily games build upon similar technologies and emanate from sports, they do not share focus. One focuses on measuring, monitoring and skill acquisition, while the other focuses on motivation, engagement...... and enjoyment. Thus, despite being two coexisting research areas, they do not extend or contribute to one another per se. However, bridging this gap by combining skill acquisition knowledge from sports training technologies with motivational game mechanics from bodily games holds great potential for designing...

  5. A Novel Parallel Engraving Machine Based on 6-PUS Mechanism and Related Technologies

    OpenAIRE

    Ling-fu, Kong; Shi-hui, Zhang

    2005-01-01

    A novel parallel engraving machine is proposed and its some key technologies are studied in this paper. Based on the confirming of mechanism type, a group of mechanisms are obtained by changing the sizes of engraving machine. Performance indices are analyzed by considering both the first and the second order influence coefficient matrix of different sample point in every mechanism's workspace, then mechanism's sizes better for both kinematics and dynamics are achieved, so the theory basis for...

  6. Understanding natural moisturizing mechanisms: implications for moisturizer technology.

    Science.gov (United States)

    Chandar, Prem; Nole, Greg; Johnson, Anthony W

    2009-07-01

    Dry skin and moisturization are important topics because they impact the lives of many individuals. For most individuals, dry skin is not a notable concern and can be adequately managed with current moisturizing products. However, dry skin can affect the quality of life of some individuals because of the challenges of either harsh environmental conditions or impaired stratum corneum (SC) dry skin protection processes resulting from various common skin diseases. Dry skin protection processes of the SC, such as the development of natural moisturizing factor (NMF), are complex, carefully balanced, and easily perturbed. We discuss the importance of the filaggrin-NMF system and the composition of NMF in both healthy and dry skin, and also reveal new insights that suggest the properties required for a new generation of moisturizing technologies.

  7. Technology for noninvasive mechanical ventilation: looking into the black box

    Directory of Open Access Journals (Sweden)

    Ramon Farré

    2016-03-01

    Full Text Available Current devices for providing noninvasive respiratory support contain sensors and built-in intelligence for automatically modifying ventilation according to the patient's needs. These devices, including automatic continuous positive airway pressure devices and noninvasive ventilators, are technologically complex and offer a considerable number of different modes of ventilation and setting options, the details of which are sometimes difficult to capture by the user. Therefore, better predicting and interpreting the actual performance of these ventilation devices in clinical application requires understanding their functioning principles and assessing their performance under well controlled bench test conditions with simulated patients. This concise review presents an updated perspective of the theoretical basis of intelligent continuous positive airway pressure and noninvasive ventilation devices, and of the tools available for assessing how these devices respond under specific ventilation phenotypes in patients requiring breathing support.

  8. Mechanical technologies for PIGMI. [Pion Generator for Medical Irradiations

    Energy Technology Data Exchange (ETDEWEB)

    Hansborough, L.D.

    1979-01-01

    PIGMI (Pion Generator for Medical Irradiations) is a compact linear proton accelerator designed for a hospital environment. The prototype of the low energy section of PIGMI has been designed and is being fabricated at the Los Alamos Scientific Laboratory. It is an accelerator design which makes use of several advanced or innovative technologies. The PIGMI Prototype consists of a 250 keV injector, a double harmonic buncher, a tape-wound 13 KG solenoid magnet, and four accelerator tanks with a total of 63 drift tubes of which 18 contain strong focusing quadrupoles of permanent magnets. The accelerator tanks are mild steel, copper-plated using a bright acid leveling technique. Drift tubes are stainless steel, fabricated using electron beam welding, shaped in a lathe and then copper plated. Drift tubes loaded with permanent magnets are sealed using laser welding. The samarium cobalt magnets are shaped by cutting and grinding techniques developed at Los Alamos.

  9. Technology Survey to Support Revision to the Remedial Investigation/Feasibility Study Work Plan for the 200­-SW­-2 Operable Unit at the U.S. Department of Energy’s Hanford Site

    Energy Technology Data Exchange (ETDEWEB)

    Truex, Michael J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Johnson, Christian D. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Nimmons, Michael J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2007-09-01

    A survey of technologies was conducted to provide information for a Data Quality Objectives process being conducted to support revision of the Remedial Investigation/Feasibility Study Work Plan for the 200-SW-2 Operable Unit. The technology survey considered remediation and characterization technologies. This effort was conducted to address, in part, comments on the previous version of the Remedial Investigation/Feasibility Study Work Plan for the 200-SW-2 Operable Unit as documented in 200­SW­1 and 200­SW­2 Collaborative Workshops-Agreement, Completion Matrix, and Supporting Documentation. By providing a thorough survey of remediation and characterization options, this report is intended to enable the subsequent data quality objectives and work plan revision processes to consider the full range of potential alternatives for planning of the Remedial Investigation/Feasibility Study activities.

  10. Biodegradation Mechanism and Technology of Polycyclic Aromatic Hydrocarbons

    Institute of Scientific and Technical Information of China (English)

    DIAO Shuo; WANG Hong-qi; ZHENG Yi-nan; HUA Fei

    2016-01-01

    [Abstract]Polycyclic aromatic hydrocarbons are a class of potentially hazardous chemicals of environmental and health concern.PAHs are one of the most prevalent groups of contaminants found in soil.Biodegradation of complex hydrocarbon usually requires the cooperation of more than single specie.This paper reviews the existing screening methods of PAH-degrading bacteria.It studied the mechanism and technical applications of the co-metabolism in PAHs.Author gives the suggestions and prospects in Biodegradable trend of PHAs.

  11. An analysis of the feasibility of carbon management policies as a mechanism to influence water conservation using optimization methods.

    Science.gov (United States)

    Wright, Andrew; Hudson, Darren

    2014-10-01

    Studies of how carbon reduction policies would affect agricultural production have found that there is a connection between carbon emissions and irrigation. Using county level data we develop an optimization model that accounts for the gross carbon emitted during the production process to evaluate how carbon reducing policies applied to agriculture would affect the choices of what to plant and how much to irrigate by producers on the Texas High Plains. Carbon emissions were calculated using carbon equivalent (CE) calculations developed by researchers at the University of Arkansas. Carbon reduction was achieved in the model through a constraint, a tax, or a subsidy. Reducing carbon emissions by 15% resulted in a significant reduction in the amount of water applied to a crop; however, planted acreage changed very little due to a lack of feasible alternative crops. The results show that applying carbon restrictions to agriculture may have important implications for production choices in areas that depend on groundwater resources for agricultural production. Copyright © 2014 Elsevier Ltd. All rights reserved.

  12. Government/industry response to questionnaire on space mechanisms/tribology technology needs

    Science.gov (United States)

    Fusaro, Robert L.

    1991-01-01

    President Bush has proposed that the U.S. undertake an ambitious mission of manned and robotic exploration of the solar system. This mission will require advanced mechanical moving components, such as bearings, gears, seals, lubricants, etc. There has been concern in the NASA community that the current technology level in these mechanical component/tribology areas may not be adequate to meet the goals of such a mission. To attempt to answer this, NASA-Lewis has sent out a questionnaire to government and industry workers (who have been involved in space mechanism research, design, and implementation) to ask their opinion if the current space mechanisms technology (mechanical components/tribology) is adequate to meet future NASA Missions needs and goals. If they deemed that the technology base inadequate, they were asked to specify the areas of greatest need. The unedited remarks of those who responded to the survey are presented.

  13. Enhancing mHealth Technology in the Patient-Centered Medical Home Environment to Activate Patients With Type 2 Diabetes: A Multisite Feasibility Study Protocol

    Science.gov (United States)

    Shi, Lu; Williams, Joel E; Dye, Cheryl J; Chen, Liwei; Crawford, Paul; Shry, Eric A; Griffin, Sarah F; Jones, Karyn O; Sherrill, Windsor W; Truong, Khoa; Little, Jeanette R; Edwards, Karen W; Hing, Marie; Moss, Jennie B

    2017-01-01

    Background The potential of mHealth technologies in the care of patients with diabetes and other chronic conditions has captured the attention of clinicians and researchers. Efforts to date have incorporated a variety of tools and techniques, including Web-based portals, short message service (SMS) text messaging, remote collection of biometric data, electronic coaching, electronic-based health education, secure email communication between visits, and electronic collection of lifestyle and quality-of-life surveys. Each of these tools, used alone or in combination, have demonstrated varying degrees of effectiveness. Some of the more promising results have been demonstrated using regular collection of biometric devices, SMS text messaging, secure email communication with clinical teams, and regular reporting of quality-of-life variables. In this study, we seek to incorporate several of the most promising mHealth capabilities in a patient-centered medical home (PCMH) workflow. Objective We aim to address underlying technology needs and gaps related to the use of mHealth technology and the activation of patients living with type 2 diabetes. Stated differently, we enable supporting technologies while seeking to influence patient activation and self-care activities. Methods This is a multisite phased study, conducted within the US Military Health System, that includes a user-centered design phase and a PCMH-based feasibility trial. In phase 1, we will assess both patient and provider preferences regarding the enhancement of the enabling technology capabilities for type 2 diabetes chronic care management. Phase 2 research will be a single-blinded 12-month feasibility study that incorporates randomization principles. Phase 2 research will seek to improve patient activation and self-care activities through the use of the Mobile Health Care Environment with tailored behavioral messaging. The primary outcome measure is the Patient Activation Measure scores. Secondary outcome

  14. Mechanical Ventilation Weaning in Inclusion Body Myositis: Feasibility of Isokinetic Inspiratory Muscle Training as an Adjunct Therapy

    Directory of Open Access Journals (Sweden)

    Leonardo Cordeiro de Souza

    2014-01-01

    Full Text Available Inclusion body myositis is a rare myopathy associated with a high rate of respiratory complications. This condition usually requires prolonged mechanical ventilation and prolonged intensive care stay. The unsuccessful weaning is mainly related to respiratory muscle weakness that does not promptly respond to immunosuppressive therapy. We are reporting a case of a patient in whom the use of an inspiratory muscle-training program which started after a two-week period of mechanical ventilation was associated with a successful weaning in one week and hospital discharge after 2 subsequent weeks.

  15. Polyimide foam-like microstructures: technology and mechanical properties

    Science.gov (United States)

    Dobrzynska, J. A.; Joris, P.; Jiguet, S.; Renaud, P.; Gijs, M. A. M.

    2011-10-01

    We report a process for the realization of polyimide films with custom-designed microporosity based on the heat-induced depolymerization of polyimide-embedded polypropylene carbonate microstructures. The foam-like microstructures are up to 40 µm thick and incorporate air cavities with a width ranging from 20 to 200 µm, a length up to 5 mm and a height of 20 µm. We model the mechanical stress-strain properties of the microcavities using both analytical and numerical methods. The simulation data are in good agreement with the results of nanoindentation and microcompression experiments, which show the reduction of the effective Young's modulus from 5.77 ± 0.06 GPa for bulk polyimide to 2.51 ± 0.03 GPa for a foam-like layer.

  16. Infrastructure, Technology and Applications of Micro-Electro-Mechanical Systems (MEMS)

    Energy Technology Data Exchange (ETDEWEB)

    Allen, J.J.; Jakubczak, J.F.; Krygowski, T.W.; Miller, S.L.; Montague, S.; Rodgers, M.S.; Sniegowski, J.J.

    1999-07-09

    A review is made of the infrastructure, technology and capabilities of Sandia National Laboratories for the development of micromechanical systems. By incorporating advanced fabrication processes, such as chemical mechanical polishing, and several mechanical polysilicon levels, the range of micromechanical systems that can be fabricated in these technologies is virtually limitless. Representative applications include a micro-engine driven mirror, and a micromachined lock. Using a novel integrated MEMS/CMOS technology, a six degree-of-freedom accelerometer/gyroscope system has been designed by researchers at U.C. Berkeley and fabricated on the same silicon chip as the CMOS control circuits to produce an integrated micro-navigational unit.

  17. Finite Element Analysis of Flat Spiral Spring on Mechanical Elastic Energy Storage Technology

    Directory of Open Access Journals (Sweden)

    Jingqiu Tang

    2014-02-01

    Full Text Available Energy storage technology has become an effective way of storing energy and improving power output controllability in modern power grid. The mechanical elastic energy storage technology on flat spiral spring is a new energy storage technology. This study states the mechanical elastic energy storage technology, models the mechanical model. Aimed to three kinds of structure and size of flat spiral spring, the finite element model are modeled, modal analysis is completed and the natural frequencies and the first 10-order vibration modes of the spring are analyzed, the relationship of natural frequency and vibration mode of spiral spring and structure and size is analyzed. The research results can provide the reference for the structure design and dynamics analysis.

  18. Renewable energy support mechanisms in the Gulf Cooperation Council states: Analyzing the feasibility of feed-in tariffs and auction mechanisms

    NARCIS (Netherlands)

    Atalay, Yasemin; Kalfagianni, A.; Pattberg, Philipp

    2017-01-01

    Renewable energy will be a crucial ingredient in the transition to a more sustainable future. The renewable energy sector requires a variety of financial support mechanisms in order to further consolidate and expand. Currently, the most prominent renewable energy support mechanisms are feed-in

  19. Renewable energy support mechanisms in the Gulf Cooperation Council states: Analyzing the feasibility of feed-in tariffs and auction mechanisms

    NARCIS (Netherlands)

    Atalay, Yasemin; Kalfagianni, A.; Pattberg, Philipp

    2017-01-01

    Renewable energy will be a crucial ingredient in the transition to a more sustainable future. The renewable energy sector requires a variety of financial support mechanisms in order to further consolidate and expand. Currently, the most prominent renewable energy support mechanisms are feed-in tarif

  20. SOCIAL MECHANISMS AND TECHNOLOGIES OF MANIPULATIVE MANAGEMENT OF THE PERSON

    Directory of Open Access Journals (Sweden)

    N. G. Osipova

    2016-01-01

    Full Text Available The article analyzes the different points of view on individual and social conditioning of the individual exposure to manipulative influences. The special attention paid to broad social context of modern transformations when the increasing stream of the information and the new forms of its giving which literally has fallen upon the person. In last decades it conducts to the “incoherence” of sensations, when the confidence and the fixed standards were replaced by uncertainty, incite to superficial perception of things, to sensation of the feeling immediacy of life and to negation of historical regularities. Authors assert that in such situation activity of the organizations and the separate persons which purpose is influence rendering on people, submission to their specific private interests is especially stirred up. The main element of the manipulative influence is the ability to impose their own solutions of urgent problems or engage in manipulation of networks of people who are predisposed to it. This article analyzes the concepts that explain susceptibility to manipulative influences of congenital mental qualities of the person; discusses the theory of “patterns”, launched by domestic explorer V.V. Krasikov. Authors allocate concrete socially-psychological mechanisms which allow people to be subjected to manipulative management, as well as the proven fact of socially conditioned cultivation conformal thinking in a certain social, economic and political circumstances. 

  1. Innovative Agro-food Technologies Implementation through Instructional Communication Mechanisms

    Directory of Open Access Journals (Sweden)

    Gianita BLEOJU

    2012-04-01

    Full Text Available The current research represents the valorization of the dissemination the design framework of an interdisciplinary area of research, validated through SPAS European FP6 project and a national BIOSIG- PN2 and has as objective to channel communication on target market, through personalized solution of instructional communication mechanisms. The main objective of the national research grant being the implementation of innovative biotechnology on agro-food market, in order to improve the fish diet’s benefits, the prospects must be provided with valuable explicit information. This paper is about the commitment to embedding the actual consumer experience from PN2 fish market research and agro-food agents’ capitalization knowledge behavior from SPAS virtual platform, through designing the adequate communication framework, in order to support and accelerate the implementation of the innovation biotechnology, through improving the target market experience. The projected solution is mainly concerning to offer adequate solutions to insure against current consumers fragilities, but we also underline the vulnerabilities of the whole agro food value chain, in terms of communication strategy, which is lacking of adequate common interest coordination. The current research solution is regarding the rising awareness about the translation from consumer preferences to perceived detriment by integrating previous validated solution of agro food market analysis.

  2. An application of interactive computer graphics technology to the design of dispersal mechanisms

    Science.gov (United States)

    Richter, B. J.; Welch, B. H.

    1977-01-01

    Interactive computer graphics technology is combined with a general purpose mechanisms computer code to study the operational behavior of three guided bomb dispersal mechanism designs. These studies illustrate the use of computer graphics techniques to discover operational anomalies, to assess the effectiveness of design improvements, to reduce the time and cost of the modeling effort, and to provide the mechanism designer with a visual understanding of the physical operation of such systems.

  3. Northern gas fields and NGH technology. A feasibility study to develop natural gas hydrate technology for the international gas markets; Nordlige gassfelt and NGH-teknologi. En studie av muligheter for utvikling av naturgasshydratteknologi for det internasjonale gassmarked

    Energy Technology Data Exchange (ETDEWEB)

    Ramsland, Trond Ragnvald; Loy, Erik F.; Doesen, Sturle

    1997-12-31

    feasible alternative, LNG technology will practically always be inferior, while pipeline technology still remains very competitive for large projects. Unfortunately, the study has indicated that despite the superiority of NGH, marginal fields like Snoehvit are unlikely to be developed under the present market conditions. 11 figs., 33 graphs, 11 tabs., 29 refs

  4. Investigation of the feasibility of deep microborehole drilling

    Energy Technology Data Exchange (ETDEWEB)

    Dreesen, D.S. [Los Alamos National Lab., NM (United States); Cohen, J.H. [Maurer Engineering, Inc., Houston, TX (United States)

    1997-01-01

    Recent advances in sensor technology, microelectronics, and telemetry technology make it feasible to produce miniature wellbore logging tools and instrumentation. Microboreholes are proposed for subterranean telemetry installations, exploration, reservoir definition, and reservoir monitoring this assumes that very small diameter bores can be produced for significantly lower cost using very small rigs. A microborehole production concept based on small diameter hydraulic or pneumatic powered mechanical drilling, assemblies deployed on coiled tubing is introduced. The concept is evaluated using, basic mechanics and hydraulics, published theories on rock drilling, and commercial simulations. Small commercial drill bits and hydraulic motors were selected for laboratory scale demonstrations. The feasibility of drilling deep, directional, one to two-inch diameter microboreholes has not been challenged by the results to date. Shallow field testing of prototype systems is needed to continue the feasibility investigation.

  5. Let's push things forward: disruptive technologies and the mechanics of tissue assembly

    Science.gov (United States)

    Varner, Victor D.; Nelson, Celeste M.

    2013-01-01

    Although many of the molecular mechanisms that regulate tissue assembly in the embryo have been delineated, the physical forces that couple these mechanisms to actual changes in tissue form remain unclear. Qualitative studies suggest that mechanical loads play a regulatory role in development, but clear quantitative evidence has been lacking. This is partly owing to the complex nature of these problems – embryonic tissues typically undergo large deformations and exhibit evolving, highly viscoelastic material properties. Still, despite these challenges, new disruptive technologies are enabling study of the mechanics of tissue assembly in unprecedented detail. Here, we present novel experimental techniques that enable the study of each component of these physical problems: kinematics, forces, and constitutive properties. Specifically, we detail advances in light sheet microscopy, optical coherence tomography, traction force microscopy, fluorescence force spectroscopy, microrheology and micropatterning. Taken together, these technologies are helping elucidate a more quantitative understanding of the mechanics of tissue assembly. PMID:23907401

  6. A Novel Technology for Synthesizing Pentasil Zeolites Based on Solid-Solid Mass Transformation Mechanism

    Institute of Scientific and Technical Information of China (English)

    张瑛; 窦涛; 鲍晓军; 李玉平; 李晓峰

    2003-01-01

    A novel technology of preparing zeoliltes based on solid-solid mass transformation mechanism is developed for the first time. By employing this technology, three different types of highly crystallized pentasil zeolites,ZSM-35 (FER-type), Silicalite-l(MFI-type) and Mordenite(MOR-type), are successfully synthesized in the solid system. In terms of commercial production, the technology'could simplify synthesis procedure and make the continuous production of zeolites possible, so as to improve the productivity. Additionally, it is environmentally friendly because the crystallization occurs in solid phase where there exists no pollution caused by waste liquid. Therefore, this technique provides us with a new indusr, rial process for the clean and continuous production of zeolites.The characteristics in synthesis chemistry and the crystallization mechanism involved in the technology are also discussed.

  7. Mechanically-Deployed Hypersonic Decelerator and Conformal Ablator Technologies for Mars Missions

    Science.gov (United States)

    Venkatapathy, Ethiraj; Wercinski, Paul F.; Beck, Robin A. S.; Hamm, Kenneth R.; Yount, Bryan C.; Makino, A.; Smith, B.; Gage, P.; Prabhu, D.

    2012-01-01

    The concept of a mechanically deployable hypersonic decelerator, developed initially for high mass (40 MT) human Mars missions, is currently funded by OCT for technology maturation. The ADEPT (Adaptive, Deployable Entry and Placement Technology) project has broad, game-changing applicability to in situ science missions to Venus, Mars, and the Outer Planets. Combined with maturation of conformal ablator technology (another current OCT investment), the two technologies provide unique low mass mission enabling capabilities otherwise not achievable by current rigid aeroshell or by inflatables. If this abstract is accepted, we will present results that illustrate the mission enabling capabilities of the mechanically deployable architecture for: (1) robotic Mars (Discovery or New Frontiers class) in the near term; (2) alternate approaches to landing MSL-class payloads, without the need for supersonic parachute or lifting entry, in the mid-term; and (3) Heavy mass and human missions to Mars in the long term.

  8. Examination of incentive mechanisms for innovative technologies applicable to utility and nonutility power generators

    Energy Technology Data Exchange (ETDEWEB)

    McDermott, K.A. [Illinois Commerce Commission, Springfield, IL (United States); Bailey, K.A.; South, D.W. [Argonne National Lab., IL (United States). Environmental Assessment and Information Sciences Div.

    1993-08-01

    Innovative technologies, built by either utility or nonutility power generators, have the potential to lower costs with less environmental emissions than conventional technologies. However, the public-good nature of information, along with uncertain costs, performance, and reliability, discourages rapid adoption of these technologies. The effect of regulation of electricity production may also have an adverse impact on motivation to innovate. Slower penetration of cleaner, more efficient technologies could result in greater levels of pollution, higher electricity prices, and a reduction in international competitiveness. Regulatory incentives could encourage adoption and deployment of innovative technologies of all kinds, inducting clean coal technologies. Such incentives must be designed to offset risks inherent in innovative technology and encourage cost-effective behavior. To evaluate innovative and conventional technologies equally, the incremental cost of risk (ICR) of adopting the innovative technology must be determined. Through the ICR, the magnitude of incentive required to make a utility (or nonutility) power generator equally motivated to use either conventional or innovative technologies can be derived. Two technology risks are examined: A construction risk, represented by a 15% cost overrun, and an operating risk, represented by a increased forced outage rate (decreased capacity factor). Different incentive mechanisms and measurement criteria are used to assess the effects of these risks on ratepayers and shareholders. In most cases, a regulatory incentive could offset the perceived risks while encouraging cost-effective behavior by both utility and nonutility power generators. Not only would the required incentive be recouped, but the revenue requirements would be less for the innovative technology; also, less environmental pollution would be generated. In the long term, ratepayers and society would benefit from innovative technologies.

  9. Monitoring of Structures and Mechanical Systems Using Virtual Visual Sensors for Video Analysis: Fundamental Concept and Proof of Feasibility

    Directory of Open Access Journals (Sweden)

    Thomas Schumacher

    2013-12-01

    Full Text Available Structural health monitoring (SHM has become a viable tool to provide owners of structures and mechanical systems with quantitative and objective data for maintenance and repair. Traditionally, discrete contact sensors such as strain gages or accelerometers have been used for SHM. However, distributed remote sensors could be advantageous since they don’t require cabling and can cover an area rather than a limited number of discrete points. Along this line we propose a novel monitoring methodology based on video analysis. By employing commercially available digital cameras combined with efficient signal processing methods we can measure and compute the fundamental frequency of vibration of structural systems. The basic concept is that small changes in the intensity value of a monitored pixel with fixed coordinates caused by the vibration of structures can be captured by employing techniques such as the Fast Fourier Transform (FFT. In this paper we introduce the basic concept and mathematical theory of this proposed so-called virtual visual sensor (VVS, we present a set of initial laboratory experiments to demonstrate the accuracy of this approach, and provide a practical in-service monitoring example of an in-service bridge. Finally, we discuss further work to improve the current methodology.

  10. Impact of new computing systems on computational mechanics and flight-vehicle structures technology

    Science.gov (United States)

    Noor, A. K.; Storaasli, O. O.; Fulton, R. E.

    1984-01-01

    Advances in computer technology which may have an impact on computational mechanics and flight vehicle structures technology were reviewed. The characteristics of supersystems, highly parallel systems, and small systems are summarized. The interrelations of numerical algorithms and software with parallel architectures are discussed. A scenario for future hardware/software environment and engineering analysis systems is presented. Research areas with potential for improving the effectiveness of analysis methods in the new environment are identified.

  11. TryCYCLE: A Prospective Study of the Safety and Feasibility of Early In-Bed Cycling in Mechanically Ventilated Patients

    Science.gov (United States)

    Molloy, Alexander J.; Clarke, France J.; Ajami, Daana; McCaughan, Magda; Obrovac, Kristy; Murphy, Christina; Camposilvan, Laura; Herridge, Margaret S.; Koo, Karen K. Y.; Rudkowski, Jill; Seely, Andrew J. E.; Zanni, Jennifer M.; Mourtzakis, Marina; Piraino, Thomas; Cook, Deborah J.

    2016-01-01

    Introduction The objective of this study was to assess the safety and feasibility of in-bed cycling started within the first 4 days of mechanical ventilation (MV) to inform a future randomized clinical trial. Methods We conducted a 33-patient prospective cohort study in a 21-bed adult academic medical-surgical intensive care unit (ICU) in Hamilton, ON, Canada. We included adult patients (≥ 18 years) receiving MV who walked independently pre-ICU. Our intervention was 30 minutes of in-bed supine cycling 6 days/week in the ICU. Our primary outcome was Safety (termination), measured as events prompting cycling termination; secondary Safety (disconnection or dislodgement) outcomes included catheter/tube dislodgements. Feasibility was measured as consent rate and fidelity to intervention. For our primary outcome, we calculated the binary proportion and 95% confidence interval (CI). Results From 10/2013-8/2014, we obtained consent from 34 of 37 patients approached (91.9%), 33 of whom received in-bed cycling. Of those who cycled, 16(48.4%) were female, the mean (SD) age was 65.8(12.2) years, and APACHE II score was 24.3(6.7); 29(87.9%) had medical admitting diagnoses. Cycling termination was infrequent (2.0%, 95% CI: 0.8%-4.9%) and no device dislodgements occurred. Cycling began a median [IQR] of 3 [2, 4] days after ICU admission; patients received 5 [3, 8] cycling sessions with a median duration of 30.7 [21.6, 30.8] minutes per session. During 205 total cycling sessions, patients were receiving invasive MV (150 [73.1%]), vasopressors (6 [2.9%]), sedative or analgesic infusions (77 [37.6%]) and dialysis (4 [2.0%]). Conclusions Early cycling within the first 4 days of MV among hemodynamically stable patients is safe and feasible. Research to evaluate the effect of early cycling on patient function is warranted. Trial Registration Clinicaltrials.gov: NCT01885442 PMID:28030555

  12. Colombian cracker feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-09-06

    Colombia`s Promotora de Olefinas Aromaticos del Caribe will soon select a consulting group to develop a $500,000 feasibility study for an olefins plant at Mamonal, Cartagena. The project will involve investments of $1.2 billion and will be based on natural gas from the Cusiana field, being developed by Ecopetrol and BP. Several groups are competing for the study; SRI International, Japan Consulting Institute, Muse, Stancil, Chem Systems, and KBC Advanced Technologies.

  13. TECHNOLOGICAL METHODS FOR LASER HARDENING OF INTERNAL CONTACT SURFACES OF «BELARUS» TRACTOR BRAKE MECHANISMS

    Directory of Open Access Journals (Sweden)

    O. S. Kobjakov

    2008-01-01

    Full Text Available The paper considers pertaining to higher wear resistance of «Belarus» tractor brake mechanisms details are considered. Properties of ВЧ-50-cast iron are investigated due to laser hardening while using various technological methods.

  14. Micro-electro-mechanical systems (MEMS: Technology for the 21st century

    Directory of Open Access Journals (Sweden)

    Đakov Tatjana A.

    2014-01-01

    Full Text Available Micro-electro-mechanical systems (MEMS are miniturized devices that can sense the environment, process and analyze information, and respond with a variety of mechanical and electrical actuators. MEMS consists of mechanical elements, sensors, actuators, electrical and electronics devices on a common silicon substrate. Micro-electro-mechanical systems are becoming a vital technology for modern society. Some of the advantages of MEMS devices are: very small size, very low power consumption, low cost, easy to integrate into systems or modify, small thermal constant, high resistance to vibration, shock and radiation, batch fabricated in large arrays, improved thermal expansion tolerance. MEMS technology is increasingly penetrating into our lives and improving quality of life, similar to what we experienced in the microelectronics revolution. Commercial opportunities for MEMS are rapidly growing in broad application areas, including biomedical, telecommunication, security, entertainment, aerospace, and more in both the consumer and industrial sectors on a global scale. As a breakthrough technology, MEMS is building synergy between previously unrelated fields such as biology and microelectronics. Many new MEMS and nanotechnology applications will emerge, expanding beyond that which is currently identified or known. MEMS are definitely technology for 21st century.

  15. Fluid mechanics for mechanical engineering. Technology and examples; Stroemungslehre fuer den Maschinenbau. Technik und Beispiele

    Energy Technology Data Exchange (ETDEWEB)

    Siekmann, H.E. [Technische Univ. Berlin (Germany). Hermann-Foettinger-Institut fuer Stroemungsmechanik

    2001-07-01

    The book complements the established fluid mechanics textbook. It discusses the same subjects but goes into more detail and contains many practical examples. It addresses students of engineering, physics and practically oriented mathematics and can be used for independent studying or for a deeper understanding of subject matter treated in university lectures. [German] Der Band stellt als Ergaenzung zum eingefuehrten Grundlagenbuch Stroemungslehre eine tiefergehende Behandlung des Vorlesungsstoffes dar. Die Einteilung der Kapitel entspricht im wesentlichen der im Band Grundlagen: Hydrostatik, Kinematik, Impulssatz, NAVIER-Stokes-Bewegungsgleichung, Potential-, Wirbel- und Grenzschichtstroemung sowie turbulente Stroemung. Das Buch schliesst mit Darstellungen ueber Rohrstroemungen, Umstroemungen von Koerpern, Aehnlichkeitsgesetzen und numerische Stroemungsberechnung. Es enthaelt zahlreiche Praxisbeispiele. Geeignet fuer Studenten der Ingenieurwissenschaften, Physiker und praxisorientierte Mathematiker zum Selbststudium sowie zur Vorlesungsbegleitung. (orig.)

  16. MapMySmoke: feasibility of a new quit cigarette smoking mobile phone application using integrated geo-positioning technology, and motivational messaging within a primary care setting.

    Science.gov (United States)

    Schick, Robert S; Kelsey, Thomas W; Marston, John; Samson, Kay; Humphris, Gerald W

    2018-01-01

    Approximately 11,000 people die in Scotland each year as a result of smoking-related causes. Quitting smoking is relatively easy; maintaining a quit attempt is a very difficult task with success rates for unaided quit attempts stubbornly remaining in the single digits. Pharmaceutical treatment can improve these rates by lowering the overall reward factor of nicotine. However, these and related nicotine replacement therapies do not operate on, or address, the spatial and contextual aspects of smoking behaviour. With the ubiquity of smartphones that can log spatial, quantitative and qualitative data related to smoking behaviour, there exists a person-centred clinical opportunity to support smokers attempting to quit by first understanding their smoking behaviour and subsequently sending them dynamic messages to encourage health behaviour change within a situational context. We have built a smartphone app-MapMySmoke-that works on Android and iOS platforms. The deployment of this app within a clinical National Health Service (NHS) setting has two distinct phases: (1) a 2-week logging phase where pre-quit patients log all of their smoking and craving events; and (2) a post-quit phase where users receive dynamic support messages and can continue to log craving events, and should they occur, relapse events. Following the initial logging phase, patients consult with their general practitioner (GP) or healthcare provider to review their smoking patterns and to outline a precise, individualised quit attempt plan. Our feasibility study consists of assessment of an initial app version during and after use by eight patients recruited from an NHS Fife GP practice. In addition to evaluation of the app as a potential smoking cessation aid, we have assessed the user experience, technological requirements and security of the data flow. In an initial feasibility study, we have deployed the app for a small number of patients within one GP practice in NHS Fife. We recruited eight

  17. Problems and criteria of quality improvement in end face mechanical seal rings through technological methods

    Science.gov (United States)

    Tarelnik, V.; Belous, A.; Antoszewski, B.; Zukov, A.

    2017-08-01

    In this paper are presented the recommendations for material’s selections of the mechanical seals rings and basic productive and operating requirements. The system of a directional selection of technology that ensures the required quality of working surfaces of the mechanical seals rings covers their entire life cycle. The mathematical frictional model is proposed as an instrument for calculating a linear and weighing abrasion of the mechanical seals rings and helps to improve selection’s criteria and the most rational method of strengthening.

  18. Comparison and analysis of the main technological factors of influencing mechanical properties of scrimber and PSL

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The main mechanical properties of scrimber and Parallel Strand Lumber (PSL) were researched through technological test. Experimental materials of scrimber are small log of Aspen, Dahurian larch and Birch. Experimental materials of PSL come from fishtail veneer strips at plywood plant of Aspen and Birch. In the laboratory conditions low quality small log and wood residues can yield scrimber and PSL with high strength. After the technological conditions of scrimber were compared with that of PSL, the main factors of influencing their properties were separately pointed out and the reasons influencing properties have been analyzed in this paper. The results showed that the hot-pressing pressure is an important technological factor for scrimber. The ratio of veneer-strand length to thickness is a key technological factor for PSL.

  19. Characterization of the mechanisms affecting single-event transients in sub-100 nm technologies

    Science.gov (United States)

    Ahlbin, Jonathan Ragnar

    This dissertation uses both three-dimensional mixed-mode technology-computer-aided design (TCAD) simulations and experimental analysis at the 65 nm, 90 nm, and 130 nm technology nodes to fully characterize the mechanisms that affect single-event transient (SETs) in sub-100 nm bulk CMOS technologies. Chapter I introduces the motivation for this work. Chapter II presents background on single-event effects. Within the chapter, single-event effects are identified and explained in context to digital circuits. Chapter III then focuses on the specific single-event effect of SETs and the factors that influence them. In the second part of the chapter, the discussion focuses on common methods of experimental SET measurement and the typical target structures used. Chapter IV discusses the relationship between the parasitic bipolar and n-well contacts, and how it affects the pulse width of SETs. Chapter V then introduces the mechanism of pulse quenching by using TCAD simulations, heavy-ion data, and laser data, to identify pulse quenching in multiple technology nodes. Additionally the chapter explains in detail how the layout and circuit design can influence pulse quenching. Finally, Chapter VI presents simulation and experimental heavy-ion results that explain a new SET mechanism called DPSETs. Instead of a single ion strike creating a single pulse SET, a single ion strike can result in a DPSET. The research presented in this dissertation directly impacts the SEE circuit qualification and analysis techniques used in the radiation effects community. Simulations supported by experimental data illustrate how there are new mechanisms in sub-100 nm bulk CMOS that can affect SET pulse widths. These mechanisms can negate traditional RHBD solutions, but also can be used as new RHBD solutions. Designers and researchers can use this work to better analyze SET results, and they can predict how SET pulse width will be affected in future bulk CMOS technologies. (Abstract shortened by UMI.)

  20. Planning and leading of the technological processes by mechanical working with microsoft project

    Science.gov (United States)

    Nae, I.; Grigore, N.

    2016-08-01

    Nowadays, fabrication systems and methods are being modified; new processing technologies come up, flow sheets develop a minimum number of phases, the flexibility of the technologies grows up, new methods and instruments of monitoring and leading the processing operations also come up. The technological course (route, entry, scheme, guiding) referring to the series of the operation, putting and execution phases of a mark in order to obtain the final product from the blank is represented by a sequence of activities realized by a logic manner, on a well determined schedule, with a determined budget and resources. Also, a project can be defined as a series of specific activities, methodical structured which they aim to finish a specific objective, within a fixed schedule and budget. Within the homogeneity between the project and the technological course, this research is presenting the defining of the technological course of mechanical chip removing process using Microsoft Project. Under these circumstances, this research highlights the advantages of this method: the celerity using of other technological alternatives in order to pick the optimal process, the job scheduling being constrained by any kinds, the standardization of some processing technological operations.

  1. Fluorescence quenching studies on the interaction of catechin-quinone with CdTe quantum dots. Mechanism elucidation and feasibility studies.

    Science.gov (United States)

    Dwiecki, Krzysztof; Neunert, Grażyna; Nogala-Kałucka, Małgorzata; Polewski, Krzysztof

    2015-01-01

    Changes of the photoluminescent properties of QD in the presence of oxidized catechin (CQ) were investigated by absorption, steady-state fluorescence, fluorescence lifetime and dynamic light scattering measurements. Photoluminescence intensity and fluorescence lifetime was decreasing with increasing CQ concentration. Dynamic light scattering technique found the hydrodynamic diameter of QD suspension in water is in range of 45 nm, whereas in presence of CQ increased to mean values of 67 nm. Calculated from absorption peak position of excition band indicated on average QD size of 3.2 nm. Emission spectroscopy and time-resolved emission studies confirmed preservation of electronic band structure in QD-CQ aggregates. On basis of the presented results, the elucidated mechanism of QD fluorescence quenching is a result of the interaction between QD and CQ due to electron transfer and electrostatic attraction. The results of fluorescence quenching of water-soluble CdTe quantum dot (QD) capped with thiocarboxylic acid were used to implement a simple and fast method to determine the presence of native antioxidant quinones in aqueous solutions. Feasibility studies on this method carried out with oxidized catechin showed a linear relation between the QD emission and quencher concentration, in range from 1 up to 200 μM. The wide linear range of concentration dependence makes it possible to apply this method for the fast and sensitive detection of quinones in solutions.

  2. Role of advanced technology in mechanical engineering. Kikai kogaku ni okeru cho no yakuwari

    Energy Technology Data Exchange (ETDEWEB)

    Koda, T. (Mechanical Engineering Lab., Tsukuba, Ibaraki (Japan))

    1992-10-05

    Since technology prefixed with 'super' is ultra-technology in another word, two kinds of work are introduced, that are on-going in the ultra-technology section in Mechanical Engineering Lab., the Ministry of International Trade and Industry. It is noted therewith that in order to realize 'super', introduction of knowledge of unfamiliar fields to mechanical engineering is one of ways. The first is a research on ion-injection onto solid surfaces by introducing quantum mechanics to mechanical engineering. Possibility of rotating new materials and physical properties is under investigation using MeV ion injection equipment. The second is a research on named 'cozy machine'. This is an example of introduction of physiological knowledge and is based on the concept that an operator can handle his machine pleasantly if it is controlled with his proper biorhythm. The possibility to form 1/f sway related to being cozy is shown using electrocardiographic signals upon which the interval of an R wave showing the largest amplitude is determined. Rotating machines are controlled in proportion to the potential. 13 refs., 3 figs.

  3. On the application of banana stalk crushing return cropland mechanization technology in Guangxi%浅析香蕉秆粉碎还田机械化技术在广西的推广应用

    Institute of Scientific and Technical Information of China (English)

    韦承坤

    2011-01-01

    The necessity and feasibility of banana stalk crushing return cropland mechanization technology were analyzed from the basic situation of Guangxi banana production. And the technology status and difficulties, corresponding countermeasures and suggestions were displayed in the paper.%文章从广西香蕉生产的基本情况入手,阐述了香蕉秆粉碎还田机械化技术的必要性和可行性,分析了该技术的应用现状及面临的困难,并提出了相应的对策和建议。

  4. Techno-economical analysis of innovative technologies in electrical power systems. A feasibility study for a Russian distribution system operator; Wirtschaftlicher Einsatz von innovativen Technologien in Energieversorgungsnetzen. Machbarkeitsstudie am Beispiel eines russischen Verteilungsnetzes

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, Holger [Siemens-Division Energy Management, Erlangen (Germany). Bereich Transmission Solutions; Ettinger, Andreas [Siemens-Division Energy Management, Erlangen (Germany). Power Technologies International (PTI); Nikitina, Elena [Siemens-Division Energy Management, Moskau (Russian Federation). Power Technologies International (PTI); Makarov, Andrej [JSC Bashkir Power Grid Company, Ufa (Russian Federation)

    2015-07-01

    Since the liberalization of the energy market in Europe transmission and distribution system operators have been facing fundamentally new challenges when ensuring a safe and reliable power supply. In addition to purely technical criteria economical aspects have become increasingly important in the strategic planning and operation of power systems. As described in this contribution, the results of a feasibility study demonstrate how the use of innovative technologies can make a valuable contribution to improve the economical situation.

  5. Development of a body motion interactive system with a weight voting mechanism and computer vision technology

    Science.gov (United States)

    Lin, Chern-Sheng; Chen, Chia-Tse; Shei, Hung-Jung; Lay, Yun-Long; Chiu, Chuang-Chien

    2012-09-01

    This study develops a body motion interactive system with computer vision technology. This application combines interactive games, art performing, and exercise training system. Multiple image processing and computer vision technologies are used in this study. The system can calculate the characteristics of an object color, and then perform color segmentation. When there is a wrong action judgment, the system will avoid the error with a weight voting mechanism, which can set the condition score and weight value for the action judgment, and choose the best action judgment from the weight voting mechanism. Finally, this study estimated the reliability of the system in order to make improvements. The results showed that, this method has good effect on accuracy and stability during operations of the human-machine interface of the sports training system.

  6. MECHANICAL PROPERTIES OF PARTS OF MEDICAL PRODUCTS PRODUCED USING ADDITIVE MANUFACTURING TECHNOLOGIES

    Directory of Open Access Journals (Sweden)

    Filip Górski

    2017-06-01

    Full Text Available The paper presents results of tests conducted on the elements of medical devices - slings used with medical lifts - manufactured using additive technologies. Project assumptions were: to produce 100 samples of clips with varying design, material and orientation parameter. Samples were manufactured using FDM and SLA processes and then tested for mechanical strength, load transmission and functionality, using certified equipment. Paper shows full methodology and obtained test results.

  7. Analysis of Noise at Coal Face by Fully-Mechanized Coal Winning Technology

    Institute of Scientific and Technical Information of China (English)

    刘照鹏

    2003-01-01

    The noise level of coal face by full-mechanized coal winning technology was measured in a coal mine. And then it was analyzed and evaluated using environment science, ergonomics and fussy mathematics analysis. Basis of the statistics and analysis of the measured noise level some measures, such as applying the new materials and improving the construction of the equipment, were carried out. The resuts show that they can reduce the noise level, improve the working environment and enhance the work efficiency.

  8. Analysis of the Mechanism and the Current Situation of the Plasma Purification Technology for Diesel Exhaust

    Directory of Open Access Journals (Sweden)

    Xiuli Guo

    2013-06-01

    Full Text Available In this study, the mechanism and the current situation of the plasma purification technology for diesel exhaust is introduced. Research indicates that cleaning the diesel exhaust with the plasma produced by corona discharge or dielectric barrier discharge has too high energy consumption to direct use without catalyst. To solve this problem, the study gives some new ways about cleaning diesel exhaust with arc discharge.

  9. Quality-by-design: an integrated process analytical technology approach to determine the nucleation and growth mechanisms during a dynamic pharmaceutical coprecipitation process.

    Science.gov (United States)

    Wu, Huiquan; Khan, Mansoor A

    2011-05-01

    The objective of this study was to demonstrate the feasibility of using an integrated process analytical technology (PAT) approach to determine nucleation and growth mechanisms of a dynamic naproxen (drug)-Eudragit L100 (polymer) coprecipitation process. The influence of several thermodynamically important formulation and process variables (drug/polymer ratio, alcohol, and water usages) on coprecipitation process characteristics was investigated via real-time in situ focused beam reflectance measurement (FBRM) monitoring and near real-time particle vision microscopy measurement. The final products were characterized by near-infrared (NIR) spectroscopy and NIR chemical imaging microscopy. The coprecipitation nucleation induction time (t(ind) ) was measured by both FBRM trend statistics and process trajectory method, respectively. Furthermore, nucleation kinetics was evaluated based on t(ind) measurement and corresponding supersaturation ratio (S) estimated. It was found that plots of ln(t(ind) ) versus (ln(2) S)(-1) consist of two linear segments and are consistent with classical primary nucleation mechanisms. Apparently, the coprecipitation process is governed by heterogeneous primary nucleation mechanism at low S (14 ≤ S ≤ 503) and by homogeneous primary nucleation mechanism at high S (1216 ≤ S ≤ 3649). Off-line characterizations collectively supported this statement. Therefore, it demonstrated that integration real-time PAT process monitoring with first-principles modeling and off-line product characterization could enhance understanding to coprecipitation process dynamics and nucleation/growth mechanisms, which is impossible via off-line techniques alone.

  10. Mechanisms of Communicating Health Information Through Facebook: Implications for Consumer Health Information Technology Design.

    Science.gov (United States)

    Menefee, Hannah K; Thompson, Morgan J; Guterbock, Thomas M; Williams, Ishan C; Valdez, Rupa S

    2016-08-11

    Consumer health information technology (IT) solutions are designed to support patient health management and have the ability to facilitate patients' health information communication with their social networks. However, there is a need for consumer health IT solutions to align with patients' health management preferences for increased adoption of the technology. It may be possible to gain an understanding of patients' needs for consumer health IT supporting their health information communication with social networks by explicating how they have adopted and adapted social networking sites, such as Facebook, for this purpose. Our aim was to characterize patients' use of all communication mechanisms within Facebook for health information communication to provide insight into how consumer health IT solutions may be better designed to meet patients' communication needs and preferences. This study analyzed data about Facebook communication mechanisms use from a larger, three-phase, sequential, mixed-methods study. We report here on the results of the study's first phase: qualitative interviews (N=25). Participants were over 18, used Facebook, were residents or citizens of the United States, spoke English, and had a diagnosis consistent with type 2 diabetes. Participants were recruited through Facebook groups and pages. Participant interviews were conducted via Skype or telephone between July and September 2014. Data analysis was grounded in qualitative content analysis and the initial coding framework was informed by the findings of a previous study. Participants' rationales for the use or disuse of a particular Facebook mechanism to communicate health information reflected six broad themes: (1) characteristics and circumstances of the person, (2) characteristics and circumstances of the relationship, (3) structure and composition of the social network, (4) content of the information, (5) communication purpose, and (6) attributes of the technology. The results of this

  11. A new high shear degassing technology and mechanism for 7032 alloy

    Directory of Open Access Journals (Sweden)

    Yu-bo Zuo

    2015-07-01

    Full Text Available Degassing is very important for aluminum alloys especially for 7xxx series alloys. In the present study, a high shear technology was used to degas 7032 aluminum alloy in order to study its degassing efficiency. The experimental results showed that the high shear technology can significantly degas 7032 aluminum alloy. By applying intensive melt shearing and an Ar injection of 60 seconds, the density index, Di, was reduced from 13.25% to 0.28% and the hydrogen concentration was significantly reduced from 0.31 to 0.10 mL/100g Al. Compared with the conventional rotary degassing, high shear technology showed a much higher degassing efficiency, achieving a lower concentration of hydrogen in a shorter time. The water simulation experiment was used to study the mechanism of the high degassing efficiency. The small bubble size and the uniform distribution of Ar bubbles with the application of high shear technology are believed to be the main cause for the high degassing efficiency.

  12. Using RFID Positioning Technology to Construct an Automatic Rehabilitation Scheduling Mechanism.

    Science.gov (United States)

    Wang, Ching-Sheng; Hung, Lun-Ping; Yen, Neil Y

    2016-01-01

    Accurately and efficiently identifying the location of patients during the course of rehabilitation is an important issue. Wireless transmission technology can reach this goal. Tracking technologies such as RFID (Radio frequency identification) can support process improvement and improve efficiencies of rehabilitation. There are few published models or methods to solve the problem of positioning and apply this technology in the rehabilitation center. We propose a mechanism to enhance the accuracy of positioning technology and provide information about turns and obstacles on the path; and user-centered services based on location-aware to enhanced quality care in rehabilitation environment. This paper outlines the requirements and the role of RFID in assisting rehabilitation environment. A prototype RFID hospital support tool is established. It is designed to provide assistance for monitoring rehabilitation patients. It can simultaneously calculate the rehabilitant's location and the duration of treatment, and automatically record the rehabilitation course of the rehabilitant, so as to improve the management efficiency of the rehabilitation program.

  13. Joining technologies for the 1990s: Welding, brazing, soldering, mechanical, explosive, solid-state, adhesive

    Energy Technology Data Exchange (ETDEWEB)

    Buckley, J.D.; Stein, B.A.

    1986-01-01

    This book presents recent advances in joining technologies for the 1990s-welding, brazing, soldering, mechanical fastening, explosive welding, solid-state bonding, and adhesive bonding. A major consideration in the fabrication of any commercial, military, or space product is attachment systems which are safe and reliable. The subject matter covered includes technology developed in current research programs relevant to welding, bonding, and fastening of structural materials, for fabricating structures and mechanical systems use in the aerospace, automotive, and related industries. Specific topics include equipment, hardware and materials used when welding, brazing, and soldering; mechanical fastening; explosive welding; use of unique selected joining techniques; adhesive bonding; and nondestructive evaluation. ''The Factory of the Future'' is presented, followed by advanced welding techniques, automated equipment for welding, welding in a cryogenic atmosphere, blind fastening, stress corrosion resistant fasteners, fastening equipment, explosive welding of different configurations and materials, solid-state bonding, electron beam welding, new adhesives, effects of cryogenics on adhesives, and new techniques and equipment for adhesive bonding.

  14. Failure mechanism and stability control technology of rock surrounding a roadway in complex stress conditions

    Institute of Scientific and Technical Information of China (English)

    Yu Yang; Bai Jianbiao; Chen Ke; Wang Xiangyu; Xiao Tongqiang; Chen Yong

    2011-01-01

    To solve the problem of supporting three downhill coal structures in the Yongan Coal Mine of Shanxi Jincheng,we studied the regular development of stress and plastic zones and characteristics of deformation of rock surrounding roadway groups after a period of roadway driving,mining one side as well as mining both sides,we used FLAC3D for our numerical and theoretical analyses.Field test were carried out,where we revealed the deformation mechanism of roadways and its coal pillars in complex stress conditions.We proposed a roadway stability control technology using backwall grouting with high-water rapid hardening material and combined support with bolt and cable anchoring after mining both sides.Our field practices showed that deformation of rock surrounding roadways can be controlled with this technology.

  15. Mechanical modeling of self-expandable stent fabricated using braiding technology.

    Science.gov (United States)

    Kim, Ju Hyun; Kang, Tae Jin; Yu, Woong-Ryeol

    2008-11-14

    The mechanical behavior of a stent is one of the important factors involved in ensuring its opening within arterial conduits. This study aimed to develop a mechanical model for designing self-expandable stents fabricated using braiding technology. For this purpose, a finite element model was constructed by developing a preprocessing program for the three-dimensional geometrical modeling of the braiding structure inside stents, and validated for various stents with different braiding structures. The constituent wires (Nitinol) in the braided stents were assumed to be superelastic material and their mechanical behavior was incorporated into the finite element software through a user material subroutine (VUMAT in ABAQUS) employing a one-dimensional superelastic model. For the verification of the model, several braided stents were manufactured using an automated braiding machine and characterized focusing on their compressive behavior. It was observed that the braided stents showed a hysteresis between their loading and unloading behavior when a compressive load was applied to the braided tube. Through the finite element analysis, it was concluded that the current mechanical model can appropriately predict the mechanical behavior of braided stents including such hysteretic behavior, and that the hysteresis was caused by the slippage between the constituent wires and their superelastic property.

  16. The evolution of advanced mechanical defenses and potential technological applications of diatom shells.

    Science.gov (United States)

    Hamm, Christian E

    2005-01-01

    Diatoms are unicellular algae with silicified cell walls, which exhibit a high degree of symmetry and complexity. Their diversity is extraordinarily high; estimates suggest that about 10(5) marine and limnic species may exist. Recently, it was shown that diatom frustules are mechanically resilient, statically sophisticated structures made of a tough glass-like composite. Consequently, to break the frustules, predators have to generate large forces and invest large amounts of energy. In addition, they need feeding tools (e.g., mandibles or gastric mills) which are hard, tough, and resilient enough to resist high stress and wear, which are bound to occur when they feed on biomineralized objects such as diatoms or other biomineralized protists. Indeed, many copepods feeding on diatoms possess, in analogy to the enamelcoated teeth of mammals, amazingly complex, silica-laced mandibles. The highly developed adaptations both to protect and to break diatoms indicate that selection pressure is high to optimize material properties and the geometry of the shells to achieve mechanical strength of the overall structure. This paper discusses the mechanical challenges which force the development of mechanical defenses, and the structural components of the diatom frustules which indicate that evolutionary optimization has led to mechanically sophisticated structures. Understanding the diatom frustule from the nanometer scale up to the whole shell will provide new insights to advanced combinations of nanostructured composite ceramic materials and lightweight architecture for technological applications.

  17. The way to zeros: The future of semiconductor device and chemical mechanical polishing technologies

    Science.gov (United States)

    Tsujimura, Manabu

    2016-06-01

    For the last 60 years, the development of cutting-edge semiconductor devices has strongly emphasized scaling; the effort to scale down current CMOS devices may well achieve the target of 5 nm nodes by 2020. Planarization by chemical mechanical polishing (CMP), is one technology essential for supporting scaling. This paper summarizes the history of CMP transitions in the planarization process as well as the changing degree of planarity required, and, finally, introduces innovative technologies to meet the requirements. The use of CMP was triggered by the replacement of local oxidation of silicon (LOCOS) as the element isolation technology by shallow trench isolation (STI) in the 1980s. Then, CMP’s use expanded to improving embedability of aluminum wiring, tungsten (W) contacts, Cu wiring, and, more recently, to its adoption in high-k metal gate (HKMG) and FinFET (FF) processes. Initially, the required degree of planarity was 50 nm, but now 0 nm is required. Further, zero defects on a post-CMP wafer is now the goal, and it is possible that zero psi CMP loading pressure will be required going forward. Soon, it seems, everything will have to be “zero” and perfect. Although the process is also chemical in nature, the CMP process is actually mechanical with a load added using slurry particles several tens of nm in diameter. Zero load in the loading process, zero nm planarity with no trace of processing, and zero residual foreign material, including the very slurry particles used in the process, are all required. This article will provide an overview of how to achieve these new requirements and what technologies should be employed.

  18. Towards CLIC feasibility

    CERN Document Server

    Delahaye, Jean-Pierre

    2010-01-01

    The CLIC study is a site independent study exploring technological developments to extend linear colliders into the Multi-TeV colliding beam energy range at reasonable cost and power consumption. A conceptual design report (CDR) of an electron-positron Compact LInear Collider (CLIC) in the Multi-TeV energy range up to 3 TeV centre-of-mass colliding beam energy is being prepared including results of 25 years of R&D to address the feasibility of its novel and promising technology, especially in an ambitious Test Facility, CTF3. The R&D is performed by a multi-lateral CLIC/CTF3 collaboration strong of 38 volunteer institutes from 19 countries.

  19. 5-level polysilicon surface micromachine technology: Application to complex mechanical systems

    Energy Technology Data Exchange (ETDEWEB)

    Rodgers, M.S.; Sniegowski, J.J.

    1998-06-01

    The authors recently reported on the development of a 5-level poly-ilicon surface micromachine fabrication process consisting of four levels of mechanical poly plus an electrical interconnect layer. They are now reporting on the first components designed for and fabricated in this process. These are demonstration systems, which definitively show that five levels of polysilicon provide greater performance, reliability, and significantly increased functionality. This new technology makes it possible to realize levels of system complexity that have so far only existed on paper, while simultaneously adding to the robustness of many of the individual subassemblies.

  20. Research on the mechanical behaviour of an airplane component made by selective laser melting technology

    Directory of Open Access Journals (Sweden)

    Păcurar Răzvan

    2017-01-01

    Full Text Available The main objective of the presented research consists in the redesign of an airplane component to decrease its weight, without affecting the mechanical behaviour of the component, at the end. Femap NX Nastran and ANSYS FEA programs were used for the shape optimization and for the estimation of the mechanical behaviour of a fixing clamp that was used to sustain the hydraulic pipes that are passing through an airplane fuselage, taking into consideration two types of raw materials – Ti6Al4V and AlSi12 powder from which this component could be manufactured by using the selective laser melting (SLM technology. Based on the obtained results, the airplane component was finally manufactured from titanium alloy using the SLM 250 HL equipment that is available at SLM Solutions GmbH company from Luebeck, in Germany.

  1. Incentive Mechanism of Green Supply Chain to Promote Supplier’s Technology R&D

    Directory of Open Access Journals (Sweden)

    Jian Cao

    2013-03-01

    Full Text Available Based on the actual situation that the green market started to develop in China today, how to enhance the activity of supplier’s technology R&D is discussed in the study. According to a two-echelon supply chain system consists of a manufacturer and a supplier, under the asymmetric information of supplier’s R&D efforts level, the incentive mechanism for supplier to improve the green degree of intermediate goods is designed. The proposed incentive mechanism can stimulate the supplier’s R&D effort level at its maximum and achieve the system revenue as much as possible. The conclusion has a good practical guidance to operational decision-making of the members of green supply chain in the early green market.

  2. Processing Technology and Mechanical Properties of Die-Cast Magnesium Alloy AZ91D

    Institute of Scientific and Technical Information of China (English)

    LIU Yan'gai(刘艳改); LIU Wenhui(刘文辉); XIONG Shoumei(熊守美); LIU Baicheng(柳百成); Wang Gang (王罡); MATSUMOTO Yoshihide; MURAKAMI Masayuki

    2004-01-01

    The mechanical properties of magnesium die-casting components can be improved with improved die-casting processing technology. An orthogonal experiment with four factors and three levels (Lq, 34) was used to evaluate the effect of various die-casting processing parameters on the quality and mechanical properties of an AZ91D magnesium alloy cylinder head cover component. The results show that the injection speed and casting and die temperatures all influence the component quality, with the influence of the casting pressure being the smallest. The injection speed and casting pressure are the two most important factors influencing the tensile strength. The best die-casting parameters for the magnesium alloy cylinder head cover component were determined to be a casting temperature of 660℃, a die temperature of 200℃, an injection speed of 70 ms(1, and a casting pressure of 65 MPa. The porosity is one of the most important parameters influencing the casting strength.

  3. A proposal for a feasible quantum-optical scheme to test for the existence of superluminal signals via quantum mechanical entanglement

    CERN Document Server

    Kalamidas, Demetrios A

    2011-01-01

    Motivated by a proposal from Greenberger [Physica Scripta T76, p.57 (1998) ] for superluminal signaling, and inspired by an experiment from Mandel [Phys. Rev. Lett. 67, p.318 (1991) ] showing interference effects within multi-particle entanglement without coincidence detection, we propose a feasible quantum-optical scheme that purports to manifest the capacity for superluminal transfer of information between distant parties.

  4. FORMATION OF TECHNOPARK OF HIGH TECHNOLOGIES OF MECHANICAL ENGINEERING ON THE BASIS OF UMK "PUMORI-SIZ"

    Directory of Open Access Journals (Sweden)

    A.V. Lugovcov

    2007-09-01

    Full Text Available Necessity of development of innovative forms of the organization of business is proved. The concept of creation of technopark of high technologies of mechanical engineering on the basis of UMK "PUMORI-SIZ" is developed.

  5. Biological, mechanical, and technological considerations affecting the longevity of intracortical electrode recordings.

    Science.gov (United States)

    Harris, James P; Tyler, Dustin J

    2013-01-01

    Intracortical electrodes are important tools, with applications ranging from fundamental laboratory studies to potential solutions to intractable clinical applications. However, the longevity and reliability of the interfaces remain their major limitation to the wider implementation and adoption of this technology, especially in broader translational work. Accordingly, this review summarizes the most significant biological and technical factors influencing the long-term performance of intracortical electrodes. In a laboratory setting, intracortical electrodes have been used to study the normal and abnormal function of the brain. This improved understanding has led to valuable insights regarding many neurological conditions. Likewise, clinical applications of intracortical brain-machine interfaces offer the ability to improve the quality of life of many patients afflicted with high-level paralysis from spinal cord injury, brain stem stroke, amyotrophic lateral sclerosis, or other conditions. It is widely hypothesized that the tissue response to the electrodes, including inflammation, limits their longevity. Many studies have examined and modified the tissue response to intracortical electrodes to improve future intracortical electrode technologies. Overall, the relationship between biological, mechanical, and technological considerations are crucial for the fidelity of chronic electrode recordings and represent a presently active area of investigation in the field of neural engineering.

  6. TRANSFER OF TECHNOLOGYMECHANISM OF MODERN UNIVERSITY WITH COMMUNITY CONNECTION

    Directory of Open Access Journals (Sweden)

    Mihaela DIACONU

    2014-11-01

    Full Text Available This study presents, starting from the third mission of the university, a modern mechanismtechnology transfer, by which the university can effectively contribute to local and regional socio-economic development and may provide additional sources of income for the research and development work in terms of substantially reducing the financial support by the state. The study emphasizes the role of the office of technology transfer as a means of connection of the university with the business environment able to arrange joint efforts of both sides in economic development. The method used was that of thematic analysis of the content of data published on the websites of the best performing TTO`s on technology transfer and the literature referring to the third mission of the university. The study develops a methodology with the procedural approach and the steps that should followed so that the university could become more competitive with the help of TTO. The conclusion is that, in the current conditions of higher education market, the entrepreneurial spirit of the university valued through TTO brings important benefits to society.

  7. A mechanism for proven technology foresight for emerging fast reactor designs and concepts

    Science.gov (United States)

    Anuar, Nuraslinda; Muhamad Pauzi, Anas

    2016-01-01

    The assessment of emerging nuclear fast reactor designs and concepts viability requires a combination of foresight methods. A mechanism that allows for the comparison and quantification of the possibility of being a proven technology in the future, β for the existing fast reactor designs and concepts is proposed as one of the quantitative foresight method. The methodology starts with the identification at the national or regional level, of the factors that would affect β. The factors are then categorized into several groups; economic, social and technology elements. Each of the elements is proposed to be mathematically modelled before all of the elemental models can be combined. Once the overall β model is obtained, the βmin is determined to benchmark the acceptance as a candidate design or concept. The β values for all the available designs and concepts are then determined and compared with the βmin, resulting in a list of candidate designs that possess the β value that is larger than the βmin. The proposed methodology can also be applied to purposes other than technological foresight.

  8. Flippin' Fluid Mechanics - Using Online Technology to Enhance the In-Class Learning Experience

    Science.gov (United States)

    Webster, D. R.; Majerich, D. M.

    2013-11-01

    This study provides an empirical analysis of using online technologies and team problem solving sessions to shift an undergraduate fluid mechanics course from a traditional lecture format to a collaborative learning environment. Students were from two consecutive semesters of the same course taught by the same professor. One group used online technologies and solved problems in class and the other did not. Out of class, the treatment group watched 72 short (11 minutes, average) video lectures covering course topics and example problems being solved. Three times a week students worked in teams of two to solve problems on desktop whiteboard tablets while the instructor and graduate assistants provided ``just-in-time'' tutoring. The number of team problems assigned during the semester exceeded 100. Weekly online homework was assigned to reinforce topics. The WileyPlus online system generated unique problem parameters for each student. The control group received three-50 minute weekly lectures. Data include three midterms and a final exam. Regression results indicate that controlling for all of the entered variables, for every one more problem solving session the student attended, the final grade was raised by 0.327 points. Thus, if a student participated in all 25 of the team problem solving sessions, the final grade would have been 8.2 points higher, a difference of nearly a grade. Using online technologies and teamwork appeared to result in improved achievement, but more research is needed to support these findings.

  9. A mechanism for proven technology foresight for emerging fast reactor designs and concepts

    Energy Technology Data Exchange (ETDEWEB)

    Anuar, Nuraslinda, E-mail: nuraslinda@uniten.edu.my; Muhamad Pauzi, Anas, E-mail: anas@uniten.edu.my [College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor (Malaysia)

    2016-01-22

    The assessment of emerging nuclear fast reactor designs and concepts viability requires a combination of foresight methods. A mechanism that allows for the comparison and quantification of the possibility of being a proven technology in the future, β for the existing fast reactor designs and concepts is proposed as one of the quantitative foresight method. The methodology starts with the identification at the national or regional level, of the factors that would affect β. The factors are then categorized into several groups; economic, social and technology elements. Each of the elements is proposed to be mathematically modelled before all of the elemental models can be combined. Once the overall β model is obtained, the β{sub min} is determined to benchmark the acceptance as a candidate design or concept. The β values for all the available designs and concepts are then determined and compared with the β{sub min}, resulting in a list of candidate designs that possess the β value that is larger than the β{sub min}. The proposed methodology can also be applied to purposes other than technological foresight.

  10. Backfilling technology and strata behaviors in fully mechanized coal mining working face

    Institute of Scientific and Technical Information of China (English)

    Zhang Qiang; Zhang Jixiong; Huang Yanli; Ju Feng

    2012-01-01

    Based on the principle of fully mechanized backfilling and coal mining technology and combined with theXingtai Coal Mine conditions,we mainly optimized the coal mining equipment and adjusted the coal mining method in the Xingtai Coal Mine 7606 working face for implementation this technology,Firstly,we define the practical backfilling process as the "(from backfilling scraper conveyor's) head to tail backfilling,step by step swinging up of the tamping arm.gradual compacting,moving formed backfilling scraper conveyor when the second tamping arm cannot pass and connecting the immediate roof by back material push front material movement".Meanwhile,the stress changes of backfill body in coal mined out area was monitored by stress sensors,and the roof caving law was analyzed by monitoring the dynamic subsidence of -210 west roadway of this face.The site tests results show that using this new backfilling and coal mining integrated technology,the production capacity in the 7606 working face can reach to 283,000 ton a year,and 282,000 ton of solid materials (waste and fly ash) is backfilled,which meets the needs of high production and efficiency.The goaf was compactly backfilled with solid material and the strata behavior was quite desirable,with an actual maximum vertical stress of the backfill body of 5.5 MPa.Backfill body control the movement of overburden within a certain range,and there is no collapses of major areas in the overlying strata upon backfilled gob.The maximum subsidence and speed were 231 mm and 15.75 mm/d respectively,which proved the practical significance of this integrated technology.

  11. Feasibility Review of Laser Blasting Technology Used in Engineering Blasting%激光起爆技术在工程爆破中应用的可行性综述

    Institute of Scientific and Technical Information of China (English)

    占必文; 龙明喜

    2013-01-01

    Combined with the characteristics of engineering blasting technology,the laser initiation system was rede-fined.Then the key technologies in terms of the structure design and manufacture of laser detonator,selection and manufac-turing technology of chemicals,laser,optical transmission network,system connect and detecting method were discussed in detail.Combining laser blasting technology with industrial engineering blasting in the current laser initiation technology used in engineering blasting are practical and feasible from the aspects of technology and cost,and are worth of raising the safety technology level of the whole blasting technology in engineering blasting in the future.%文章结合工程爆破技术的特点,首先对激光起爆系统进行了重新划分,然后着重讨论了激光雷管结构设计制造、药剂选择及制造工艺、激光器、光能传输网络及系统连接与检测方式等关键技术。在当前的激光起爆技术水平下结合我国民用工程爆破特点,激光起爆技术运用在工程爆破领域,从技术和成本方面均具有实用性和可行性,并值得在未来的工程爆破中提升整个爆破技术的安全技术水平。

  12. Nanoscale Mechanics of Graphene and Graphene Oxide in Composites: A Scientific and Technological Perspective.

    Science.gov (United States)

    Palermo, Vincenzo; Kinloch, Ian A; Ligi, Simone; Pugno, Nicola M

    2016-08-01

    Graphene shows considerable promise in structural composite applications thanks to its unique combination of high tensile strength, Young's modulus and structural flexibility which arise due to its maximal chemical bond strength and minimal atomic thickness. However, the ultimate performance of graphene composites will depend, in addition to the properties of the matrix and interface, on the morphology of the graphene used, including the size and shape of the sheets and the number of chemical defects present. For example, whilst oxidized sp(3) carbon atoms and vacancies in a graphene sheet can degrade its mechanical strength, they can also increase its interaction with other materials such as the polymer matrix of a composite, thus maximizing stress transfer and leading to more efficient mechanical reinforcement. Herein, we present an overview of some recently published work on graphene mechanical properties and discuss a list of challenges that need to be overcome (notwithstanding the strong hype existing on this material) for the development of graphene-based materials into a successful technology.

  13. Mechanical Coupling Error Suppression Technology for an Improved Decoupled Dual-Mass Micro-Gyroscope

    Directory of Open Access Journals (Sweden)

    Bo Yang

    2016-04-01

    Full Text Available This paper presents technology for the suppression of the mechanical coupling errors for an improved decoupled dual-mass micro-gyroscope (DDMG. The improved micro-gyroscope structure decreases the moment arm of the drive decoupled torque, which benefits the suppression of the non-ideal decoupled error. Quadrature correction electrodes are added to eliminate the residual quadrature error. The structure principle and the quadrature error suppression means of the DDMG are described in detail. ANSYS software is used to simulate the micro-gyroscope structure to verify the mechanical coupling error suppression effect. Compared with the former structure, simulation results demonstrate that the rotational displacements of the sense frame in the improved structure are substantially suppressed in the drive mode. The improved DDMG structure chip is fabricated by the deep dry silicon on glass (DDSOG process. The feedback control circuits with quadrature control loops are designed to suppress the residual mechanical coupling error. Finally, the system performance of the DDMG prototype is tested. Compared with the former DDMG, the quadrature error in the improved dual-mass micro-gyroscope is decreased 9.66-fold, and the offset error is decreased 6.36-fold. Compared with the open loop sense, the feedback control circuits with quadrature control loop decrease the bias drift by 20.59-fold and the scale factor non-linearity by 2.81-fold in the ±400°/s range.

  14. Mechanical Coupling Error Suppression Technology for an Improved Decoupled Dual-Mass Micro-Gyroscope.

    Science.gov (United States)

    Yang, Bo; Wang, Xingjun; Deng, Yunpeng; Hu, Di

    2016-01-01

    This paper presents technology for the suppression of the mechanical coupling errors for an improved decoupled dual-mass micro-gyroscope (DDMG). The improved micro-gyroscope structure decreases the moment arm of the drive decoupled torque, which benefits the suppression of the non-ideal decoupled error. Quadrature correction electrodes are added to eliminate the residual quadrature error. The structure principle and the quadrature error suppression means of the DDMG are described in detail. ANSYS software is used to simulate the micro-gyroscope structure to verify the mechanical coupling error suppression effect. Compared with the former structure, simulation results demonstrate that the rotational displacements of the sense frame in the improved structure are substantially suppressed in the drive mode. The improved DDMG structure chip is fabricated by the deep dry silicon on glass (DDSOG) process. The feedback control circuits with quadrature control loops are designed to suppress the residual mechanical coupling error. Finally, the system performance of the DDMG prototype is tested. Compared with the former DDMG, the quadrature error in the improved dual-mass micro-gyroscope is decreased 9.66-fold, and the offset error is decreased 6.36-fold. Compared with the open loop sense, the feedback control circuits with quadrature control loop decrease the bias drift by 20.59-fold and the scale factor non-linearity by 2.81-fold in the ±400°/s range.

  15. Infusion of Emerging Technologies and New Teaching Methods into the Mechanical Engineering Curriculum at the City College of New York

    Science.gov (United States)

    Delale, Feridun; Liaw, Benjamin M.; Jiji, Latif M.; Voiculescu, Ioana; Yu, Honghui

    2011-01-01

    From October 2003 to April 2008 a systemic reform of the Mechanical Engineering program at The City College of New York was undertaken with the goal of incorporating emerging technologies (such as nanotechnology, biotechnology, Micro-Electro-Mechanical Systems (MEMS), intelligent systems) and new teaching methodologies (such as project based…

  16. Feasibility Study on HYSOL CSP

    DEFF Research Database (Denmark)

    Nielsen, Lars Henrik; Skytte, Klaus; Pérez, Cristian Hernán Cabrera

    2016-01-01

    integrated HYSOL concept, therefore, becomes a fully dispatchable (offering firm power) and fully renewable energy source (RES) based power supply alternative, offering CO2-free electricity in regions with sufficient solar resources. The economic feasibility of HYSOL configurations is addressed in this paper....... The CO2 free HYSOL alternative is discussed relative to conventional reference firm power generation technologies. In particular the HYSOL performance relative to new power plants based on natural gas (NG) such as open cycle or combined cycle gas turbines (OCGT or CCGT) are in focus. The feasibility...

  17. Parametric and mechanical characterization of linear low density polyethylene (LLDPE) using rotational moulding technology

    Indian Academy of Sciences (India)

    P L Ramkumar; D M Kulkarni; V V Chaudhari

    2014-06-01

    In this research work, extensive literature review of the rotational moulding process using linear low density polythene (LLDPE) has been carried out to summarize the present status of the characterization in order to maintain quality and reliability of the products.The present characterization of rotomoulded products using LLDPE is based on the mechanical properties which are being altered by changing process parameters. However, it is observed that in the majority of applications of the products made of LLDPE using rotational moulding technology are prone to cracking failure due to manufacturing defects at room temperature. Therefore, study of fracture characterization of the material is equally important in relation to quality and reliability. In this article, the present characterization of the rotational moulded products using different polymers is summarized in the form of review and the importance of evaluation of the fracture behaviour of rotomoulded products is emphasized.

  18. Cleaning mechanism of particle contaminants on large aperture optical components by using air knife sweeping technology

    Science.gov (United States)

    Niu, Longfei; Liu, Hao; Miao, Xinxiang; Lv, Haibing; Yuan, Xiaodong; Zhou, Hai; Yao, Caizhen; Zhou, Guorui; Li, Qin

    2017-05-01

    The cleaning mechanism of optical surface particle contaminants in the light pneumatic tube was simulated based on the static equations and JKR model. Cleaning verification experiment based on air knife sweeping system and on-line monitoring system in high power laser facility was set up in order to verify the simulated results. Results showed that the removal ratio is significantly influenced by sweeping velocity and angle. The removal ratio can reach to 94.3% by using higher input pressure of the air knife, demonstrating that the air knife sweeping technology is useful for maintaining the surface cleanliness of optical elements, and thus guaranteeing the long-term stable running of the high power laser facility.

  19. Hybrid Cleaning Technology for Enhanced Post-Cu/Low-Dielectric Constant Chemical Mechanical Planarization Cleaning Performance

    Science.gov (United States)

    Ramachandran, Manivannan; Cho, Byoung-Jun; Kwon, Tae-Young; Park, Jin-Goo

    2013-05-01

    During chemical mechanical planarization (CMP), a copper/low-k surface is often contaminated by abrasive particles, organic materials and other additives. These contaminants need to be removed in the subsequent cleaning process with minimum material loss. In this study, a dilute amine-based alkaline cleaning solution is used along with physical force in the form of megasonic energy to remove particles and organic contaminants. Tetramethylammonium hydroxide (TMAH) and monoethanolamine (MEA) are used as an organic base and complexing agent, respectively, in the proposed solution. Ethanolamine acts as a corrosion inhibitor in the solution. Organic residue removal was confirmed through contact angle measurements and X-ray photoelectron spectroscopy analysis. Electrochemical studies showed that the proposed solution increases protection against corrosion, and that the hybrid cleaning technology resulted in higher particle removal efficiency from both the copper and low-k surfaces.

  20. Report to the United States Congress clean coal technology export markets and financing mechanisms

    Energy Technology Data Exchange (ETDEWEB)

    1994-05-01

    This report responds to a Congressional Conference Report that requests that $625,000 in funding provided will be used by the Department to identify potential markets for clean coal technologies in developing countries and countries with economies in transition from nonmarket economies and to identify existing, or new, financial mechanisms or financial support to be provided by the Federal government that will enhance the ability of US industry to participate in these markets. The Energy Information Administration (EIA) expects world coal consumption to increase by 30 percent between 1990 and 2010, from 5.1 to 6.5 billion short tons. Five regions stand out as major foreign markets for the export of US clean coal technologies: China; The Pacific Rim (other than China); South Asia (primarily India); Transitional Economies (Central Europe and the Newly Independent States); and Other Markets (the Americas and Southern Africa). Nearly two-thirds of the expected worldwide growth in coal utilization will occur in China, one quarter in the United States. EIA forecasts nearly a billion tons per year of additional coal consumption in China between 1990 and 2010, a virtual doubling of that country`s coal consumption. A 30-percent increase in coal consumption is projected in other developing countries over that same period. This increase in coal consumption will be accompanied by an increase in demand for technologies for burning coal cost-effectively, efficiently and cleanly. In the Pacific Rim and South Asia, rapid economic growth coupled with substantial indigenous coal supplies combine to create a large potential market for CCTS. In Central Europe and the Newly Independent States, the challenge will be to correct the damage of decades of environmental neglect without adding to already-considerable economic disruption. Though the situation varies, all these countries share the basic need to use indigenous low-quality coal cleanly and efficiently.

  1. Instability mechanism and control technology of soft rock roadway affected by mining and high confined water

    Institute of Scientific and Technical Information of China (English)

    Li Guichen; Jiang Zuohan; Lv Chuangxin; Huang Chao; Chen Gui; Li Mingyuan

    2015-01-01

    Based on deformation and failure characteristics of the second belt conveyor roadway at level II of Zhuxianzhuang coal mine, laboratory experiments, numerical calculation and field test were adopted to analyze the composition and microstructure of mudstone, the law of mudstone hydration and its strength weakening induced by water, the characteristics of surrounding rock deformation and failure under the action of confined water. Results showed that montmorillonite clay minerals accounted for as much as 76% of mudstone, with a large number of pores existing in the microstructure. Besides, as the molecular structure of montmorillonite changed, mudstone microstructure damage occurred with the macroscopic manifestation of its rheological instability. Weakening degree of confined water on residual strength of mudstone was almost 50%. The instability mechanism of soft rock roadway caused by high confined water is that surrounding rock circulates the process of ‘fracture-seepage-mud ding-closed’ twice, which weakens its strength and leads to roadway instability. A combined support technology, namely the, ‘high-toughness sealing layer+hollow grouting cables+full-length anchoring bolts with deep borehole’ was proposed. Based on field observation, the soft rock roadway was controlled effectively, which also verified the effectiveness of new control technology for surrounding rock.

  2. Fostering a Renewable Energy Technology Industry: An InternationalComparison of Wind Industry Policy Support Mechanisms

    Energy Technology Data Exchange (ETDEWEB)

    Lewis, Joanna; Wiser, Ryan

    2005-11-15

    This article examines the importance of national and sub-national policies in supporting the development of successful global wind turbine manufacturing companies. We explore the motivations behind establishing a local wind power industry, and the paths that different countries have taken to develop indigenous large wind turbine manufacturing industries within their borders. This is done through a cross-country comparison of the policy support mechanisms that have been employed to directly and indirectly promote wind technology manufacturing in twelve countries. We find that in many instances there is a clear relationship between a manufacturer's success in its home country market and its eventual success in the global wind power market. Whether new wind turbine manufacturing entrants are able to succeed will likely depend in part on the utilization of their turbines in their own domestic market, which in turn will be influenced by the annual size and stability of that market. Consequently, policies that support a sizable, stable market for wind power, in conjunction with policies that specifically provide incentives for wind power technology to be manufactured locally, are most likely to result in the establishment of an internationally competitive wind industry.

  3. Hemocompatibility of Axial Versus Centrifugal Pump Technology in Mechanical Circulatory Support Devices.

    Science.gov (United States)

    Schibilsky, David; Lenglinger, Matthias; Avci-Adali, Meltem; Haller, Christoph; Walker, Tobias; Wendel, Hans Peter; Schlensak, Christian

    2015-08-01

    The hemocompatible properties of rotary blood pumps commonly used in mechanical circulatory support (MCS) are widely unknown regarding specific biocompatibility profiles of different pump technologies. Therefore, we analyzed the hemocompatibility indicating markers of an axial flow and a magnetically levitated centrifugal device within an in vitro mock loop. The HeartMate II (HM II; n = 3) device and a CentriMag (CM; n = 3) adult pump were investigated in a human whole blood mock loop for 360 min using the MCS devices as a driving component. Blood samples were analyzed by enzyme-linked immunosorbent assay for markers of coagulation, complement system, and inflammatory response. There was a time-dependent activation of the coagulation (thrombin-antithrombin complexes [TAT]), complement (SC5b-9), and inflammation system (polymorphonuclear [PMN] elastase) in both groups. The mean value of TAT (CM: 4.0 μg/L vs. 29.4 μg/L, P centrifugal CM device showed significantly lower activation of coagulation and inflammation than that of the HM II axial flow pump. Both HM II and CM have demonstrated an acceptable hemocompatibility profile in patients. However, there is a great opportunity to gain a clinical benefit by developing techniques to lower the blood surface interaction within both pump technologies and a magnetically levitated centrifugal pump design might be superior.

  4. Fostering a Renewable Energy Technology Industry: An InternationalComparison of Wind Industry Policy Support Mechanisms

    Energy Technology Data Exchange (ETDEWEB)

    Lewis, Joanna; Wiser, Ryan

    2005-11-15

    This article examines the importance of national and sub-national policies in supporting the development of successful global wind turbine manufacturing companies. We explore the motivations behind establishing a local wind power industry, and the paths that different countries have taken to develop indigenous large wind turbine manufacturing industries within their borders. This is done through a cross-country comparison of the policy support mechanisms that have been employed to directly and indirectly promote wind technology manufacturing in twelve countries. We find that in many instances there is a clear relationship between a manufacturer's success in its home country market and its eventual success in the global wind power market. Whether new wind turbine manufacturing entrants are able to succeed will likely depend in part on the utilization of their turbines in their own domestic market, which in turn will be influenced by the annual size and stability of that market. Consequently, policies that support a sizable, stable market for wind power, in conjunction with policies that specifically provide incentives for wind power technology to be manufactured locally, are most likely to result in the establishment of an internationally competitive wind industry.

  5. Can interactive educational technologies support the link between ultrasound theory and practice via feedback mechanisms?

    Science.gov (United States)

    Dickson, Diane

    2015-05-01

    Linking theory to practice is an area of concern for ultrasound students, clinical mentors and academic staff. The link between theory and practice requires a robust clinical mentorship scheme in addition to careful curricula design considerations to improve student outcomes. The introduction of interactive technology in education provides ripe opportunity to improve feedback to students to support the link between theory and practice. A series of three interactive learning and teaching activities were designed and delivered to a PostGraduate Ultrasound cohort, after which, evaluation was performed to answer the research question: Which interactive technologies support the link between theory and practice through improved feedback mechanisms? An action research methodology was adopted involving an enquiry based literature review, planning, design and action process. Data were collected following action of three interactive teaching and learning sessions within the Medical Ultrasound cohort of 2013/2014 at Glasgow Caledonian University via a paper based questionnaire. A 100% response rate was achieved (n = 14). All three interactive learning and teaching sessions were considered with 100% highest point agreement to support the link between ultrasound theory and practice via feedback. Students found all three designed and facilitated sessions valuable and relevant to their learning, which in turn provided positive experiences which were perceived to support the link between theory and practice through feedback. These activities can be considered valuable in Postgraduate Ultrasound education.

  6. Biometric Digital Health Technology for Measuring Motor Function in Parkinson’s Disease: Results from a Feasibility and Patient Satisfaction Study

    Directory of Open Access Journals (Sweden)

    Georgia Mitsi

    2017-06-01

    Full Text Available ObjectivesTo assess the feasibility, predictive value, and user satisfaction of objectively quantifying motor function in Parkinson’s disease (PD through a tablet-based application (iMotor using self-administered tests.MethodsPD and healthy controls (HCs performed finger tapping, hand pronation–supination and reaction time tasks using the iMotor application.ResultsThirty-eight participants (19 with PD and 17 HCs were recruited in the study. PD subjects were 53% male, with a mean age of 67.8 years (±8.8, mean disease duration of 6.5 years (±4.6, Movement Disorders Society version of the Unified Parkinson Disease Rating Scale III score 26.3 (±6.7, and Hoehn & Yahr stage 2. In the univariate analysis, most tapping variables were significantly different in PD compared to HC. Tap interval provided the highest predictive ability (90%. In the multivariable logistic regression model reaction time (reaction time test (p = 0.021 and total taps (two-target test (p = 0.026 were associated with PD. A combined model with two-target (total taps and accuracy and reaction time produced maximum discriminatory performance between HC and PD. The overall accuracy of the combined model was 0.98 (95% confidence interval: 0.93–1. iMotor use achieved high rates of patients’ satisfaction as evaluated by a patient satisfaction survey.ConclusioniMotor differentiated PD subjects from HCs using simple alternating tasks of motor function. Results of this feasibility study should be replicated in larger, longitudinal, appropriately designed, controlled studies. The impact on patient care of at-home iMotor-assisted remote monitoring also deserves further evaluation.

  7. Mechanical Thrombectomy in Patients With Acute Ischemic Stroke: A Health Technology Assessment

    Science.gov (United States)

    2016-01-01

    Background In Ontario, current treatment for eligible patients who have an acute ischemic stroke is intravenous thrombolysis (IVT). However, there are some limitations and contraindications to IVT, and outcomes may not be favourable for patients with stroke caused by a proximal intracranial occlusion. An alternative is mechanical thrombectomy with newer devices, and a number of recent studies have suggested that this treatment is more effective for improving functional independence and clinical outcomes. The objective of this health technology assessment was to evaluate the clinical effectiveness and cost-effectiveness of new-generation mechanical thrombectomy devices (with or without IVT) compared to IVT alone (if eligible) in patients with acute ischemic stroke. Methods We conducted a systematic review of the literature, limited to randomized controlled trials that examined the effectiveness of mechanical thrombectomy using stent retrievers and thromboaspiration devices for patients with acute ischemic stroke. We assessed the quality of the evidence using the GRADE approach. We developed a Markov decision-analytic model to assess the cost-effectiveness of mechanical thrombectomy (with or without IVT) versus IVT alone (if eligible), calculated incremental cost-effectiveness ratios using a 5-year time horizon, and conducted sensitivity analyses to examine the robustness of the estimates. Results There was a substantial, statistically significant difference in rate of functional independence (GRADE: high quality) between those who received mechanical thrombectomy (with or without IVT) and IVT alone (odds ratio [OR] 2.39, 95% confidence interval [CI] 1.88–3.04). We did not observe a difference in mortality (GRADE: moderate quality) (OR 0.80, 95% CI 0.60–1.07) or symptomatic intracerebral hemorrhage (GRADE: moderate quality) (OR 1.11, 95% CI 0.66–1.87). In the base-case cost-utility analysis, which had a 5 year time horizon, the costs and effectiveness for

  8. Creating new products in mechanical engineering. Evaluation of the Masina Technology Programme; Uusia tuotteita koneenrakennusalalle. Masina-teknologiaohjelman loppuarviointi

    Energy Technology Data Exchange (ETDEWEB)

    Syrjaenen, M.; Nikula, J.; Hiltunen, J.; Raivio, T.

    2008-07-01

    The Masina Technology Programme (2001- 2007) focused on developing Finnish mechanical engineering business and research through stimulating mechanical engineering expertise and research, increasing cooperation between enterprises and researchers as well as supporting product development and widening the business focus to service products. The programme aimed also at supporting applied research and broadening the technology platform towards ICT and material technology and service oriented technologies. The background motivation of the programme was to facilitate a transformation process from the traditional mechanical engineering industry to a modern business and research cluster. The programme included 89 corporate R and D projects and 26 public research project. The total volume of the programme was 114 million euro. In total, Tekes allocated 40.5 million to corporate projects and 11.2 million to research projects. It can be concluded that Masina Technology Programme was a successful but traditional programme. New product development was clearly emphasised as the concrete means for the renewal of the industry, and the programme succeeded in strengthening the competitive edge of Finnish mechanical engineering. The results related to new service business were moderate. The future role of technology programmes in the industry links to the new instrument called Strategic Centres for Science, Technology and Innovation. Majority of the Tekes programme funding is planned to be channeled through these centres in the future. The centres aim at promoting longer term strategic research activities in selected clusters and this would mean shifting the focus of programmes towards public research activities. At the same time the evaluation results underline the challenges in providing programme services for such a technology-wise fragmented and large audience as mechanical engineering industry

  9. 中小企业技术创新机制的力学模型研究%The Research on Mechanical Model of SMEs' Technology Innovation Mechanism

    Institute of Scientific and Technical Information of China (English)

    蔡瑞林; 孙洁

    2012-01-01

    中小企业的技术创新面对复杂的支持和约束系统.本文设计了中小企业技术创机制的力学模型,解释了模型维度以及竞争压力、成长动力、推动力、拉力、障碍力这五种变量,分析了技术创新机制的主客体系统及其协调机制.此外,还利用模型就中小企业的技术创新提出了三点对策建议.%Because SMEs have to face complex supported and restrained systems in technology innovation, the article de-signed " mechanical model " of technology innovation of SMEs, analyzed five kinds of forces, including competitive pres-sure , enterprise growth force, driving force, pull force and obstacle force in the process of technological innovation, and constructed a mechanical model of SMEs' technology innovation mechanism. In addition, based on the model, the article put forward three countermeasures for the technological innovation of SEMs.

  10. Joining technologies for the 1990s: welding, brazing, soldering, mechanical, explosive, solid-state, adhesive

    Energy Technology Data Exchange (ETDEWEB)

    Buckley, J.D.; Stein, B.A.

    1986-01-01

    A compilation of papers presented in a joint NASA, American Society for Metals, The George Washington University, American Welding Society, and Society of Manufacturing Engineers Conference on Welding, Bonding, and Fastening at Langley Research Center, Hampton, VA, on October 23 to 25, 1984 is given. Papers were presented on technology developed in current research programs relevant to welding, bonding, and fastening of structural materials required in fabricating structures and mechanical systems used in the aerospace, hydrospace, and automotive industries. Topics covered in the conference included equipment, hardware and materials used when welding, brazing, and soldering, mechanical fastening, explosive welding, use of unique selected joining techniques, adhesives bonding, and nondestructive evaluation. A concept of the factory of the future was presented, followed by advanced welding techniques, automated equipment for welding, welding in a cryogenic atmosphere, blind fastening, stress corrosion resistant fasteners, fastening equipment, explosive welding of different configurations and materials, solid-state bonding, electron beam welding, new adhesives, effects of cryogenics on adhesives, and new techniques and equipment for adhesive bonding. For individual titles see N86-11228 through N86-11255.

  11. Extracorporeal shock wave therapy (ESWT) for wound healing: technology, mechanisms, and clinical efficacy.

    Science.gov (United States)

    Mittermayr, Rainer; Antonic, Vlado; Hartinger, Joachim; Kaufmann, Hanna; Redl, Heinz; Téot, Luc; Stojadinovic, Alexander; Schaden, Wolfgang

    2012-01-01

    For almost 30 years, extracorporeal shock wave therapy has been clinically implemented as an effective treatment to disintegrate urinary stones. This technology has also emerged as an effective noninvasive treatment modality for several orthopedic and traumatic indications including problematic soft tissue wounds. Delayed/nonhealing or chronic wounds constitute a burden for each patient affected, significantly impairing quality of life. Intensive wound care is required, and this places an enormous burden on society in terms of lost productivity and healthcare costs. Therefore, cost-effective, noninvasive, and efficacious treatments are imperative to achieve both (accelerated and complete) healing of problematic wounds and reduce treatment-related costs. Several experimental and clinical studies show efficacy for extracorporeal shock wave therapy as means to accelerate tissue repair and regeneration in various wounds. However, the biomolecular mechanism by which this treatment modality exerts its therapeutic effects remains unclear. Potential mechanisms, which are discussed herein, include initial neovascularization with ensuing durable and functional angiogenesis. Furthermore, recruitment of mesenchymal stem cells, stimulated cell proliferation and differentiation, and anti-inflammatory and antimicrobial effects as well as suppression of nociception are considered important facets of the biological responses to therapeutic shock waves. This review aims to provide an overview of shock wave therapy, its history and development as well as its current place in clinical practice. Recent research advances are discussed emphasizing the role of extracorporeal shock wave therapy in soft tissue wound healing.

  12. Using technology to explore social networks and mechanisms underlying peer effects in classrooms.

    Science.gov (United States)

    Guryan, Jonathan; Jacob, Brian; Klopfer, Eric; Groff, Jennifer

    2008-03-01

    Peer interactions among children have long interested social scientists. Identifying causal peer effects is difficult, and a number of studies have used random assignment to produce evidence that peers affect each other's outcomes. This focus by sociologists and economists on whether peers affect each other has not been matched by direct evidence on how these effects operate. The authors argue that one reason for the small number of studies in sociology and economics on the mechanisms underlying peer effects is the difficulty of collecting data on microinteractions. They argue technology reduces data collection costs relative to direct observation and allows for realistic school activities with randomly assigned peers. The authors describe a novel strategy for collecting data on peer interactions and discuss how this approach might shed light on mechanisms underlying peer influence. The centerpiece of this strategy is the use of handheld computers by middle and high school students as part of interactive math and science lessons called the Discussion Game. The handhelds collect data on interactions between students and track how students' answers evolve as they interact with different peers.

  13. Joining technologies for the 1990s: Welding, brazing, soldering, mechanical, explosive, solid-state, adhesive

    Science.gov (United States)

    Buckley, John D. (Editor); Stein, Bland A. (Editor)

    1986-01-01

    A compilation of papers presented in a joint NASA, American Society for Metals, The George Washington University, American Welding Society, and Society of Manufacturing Engineers Conference on Welding, Bonding, and Fastening at Langley Research Center, Hampton, VA, on October 23 to 25, 1984 is given. Papers were presented on technology developed in current research programs relevant to welding, bonding, and fastening of structural materials required in fabricating structures and mechanical systems used in the aerospace, hydrospace, and automotive industries. Topics covered in the conference included equipment, hardware and materials used when welding, brazing, and soldering, mechanical fastening, explosive welding, use of unique selected joining techniques, adhesives bonding, and nondestructive evaluation. A concept of the factory of the future was presented, followed by advanced welding techniques, automated equipment for welding, welding in a cryogenic atmosphere, blind fastening, stress corrosion resistant fasteners, fastening equipment, explosive welding of different configurations and materials, solid-state bonding, electron beam welding, new adhesives, effects of cryogenics on adhesives, and new techniques and equipment for adhesive bonding.

  14. 提高农村卫生适宜诊断技术推广应用效果的方法研究%Study on approaches to popular application effect of the feasible medical technology in rural area

    Institute of Scientific and Technical Information of China (English)

    蒋海瑛; 徐云; 夏志俊; 吴林荣

    2009-01-01

    目的 总结和分析余杭区3项适宜诊断技术的推广应用效果,结合浙江省实际情况提出相应的推广应用方法和措施.方法采用集中面授形式进行技术培训,行政干预与课题组相结合的推广模式进行技术推广应用.结果3项技术的培训率均为100%,2006年技术应用率分别为心电图分析仪应用技术76.5%、骨碱性磷酸酶检测技术100.0%、弓形虫诊断技术88.2%,总使用人数40 526例.结论在满足技术适宜性的基础上,实施技术分类推广管理、加强技术服务、改善推广条件是现阶段提高农村卫生适宜技术推广应用效果的有效方法.%Objective Analysis of the applied effect on three kinds of feasible diagnosis techniques in the rural area of Yuhang.Methods First,we adopted the technology training through classroom teaching.and second the model of technology extension with combination of administrative interfering and research group studying was used to promote the popular application of these techniques.Results The total cases of used these techniques were 40526.During 2006 the training rate of these techniques was 100.0%.The applicative rates for ECG,NBAP and toxoplasmosis diagnostic technology were 76.5%,100.0%,and 88.2% respectively.Conclusions Nowadays it would be the effective approaches for improving technology extension of feasible diagnosis to implement the classified administration of the technology,to strengthen the technical services,and to impmve the conditions of the technology extension based on the technical usability.

  15. Feasibility investigations on a novel micro-manufacturing process for fabrication of fuel cell bipolar plates: Internal pressure-assisted embossing of micro-channels with in-die mechanical bonding

    Energy Technology Data Exchange (ETDEWEB)

    Koc, Muammer [NSF I/UCR Center for Precision Forming (CPF), Department of Mechanical Engineering, Virginia Commonwealth University (VCU), Richmond, VA (United States); Mahabunphachai, Sasawat [NSF I/UCR Center for Precision Forming (CPF), Department of Mechanical Engineering, Virginia Commonwealth University (VCU), Richmond, VA (United States); Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI (United States)

    2007-10-25

    In this paper, we present the results of our studies on conceptual design and feasibility experiments towards development of a novel hybrid manufacturing process to fabricate fuel cell bipolar plates that consists of multi-array micro-channels on a large surface area. The premises of this hybrid micro-manufacturing process stem from the use of an internal pressure-assisted embossing process (cold or warm) combined with mechanical bonding of double bipolar plates in a single-die and single-step operation. Such combined use of hydraulic and mechanical forming forces and in-process bonding will (a) enable integrated forming of micro-channels on both surfaces (as anode and cathode flow fields) and at the middle (as cooling channels), (b) reduce the process steps, (c) reduce variation in dimensional tolerances and surface finish, (d) increase the product quality, (e) increase the performance of fuel cell by optimizing flow-field designs and ensuring consistent contact resistance, and (f) reduce the overall stack cost. This paper explains two experimental investigations that were performed to characterize and evaluate the feasibility of the conceptualized manufacturing process. The first investigation involved hydroforming of micro-channels using thin sheet metals of SS304 with a thickness of 51 {mu}m. The width of the channels ranged from 0.46 to 1.33 mm and the height range was between 0.15 and 0.98 mm. Our feasibility experiments resulted in that different aspect ratios of micro-channels could be fabricated using internal pressure in a controllable manner although there is a limit to very sharp channel shapes (i.e., high aspect ratios with narrow channels). The second investigation was on the feasibility of mechanical bonding of thin sheet metal blanks. The effects of different process and material variables on the bond quality were studied. Successful bonding of various metal blanks (Ni201, Al3003, and SS304) was obtained. The experimental results from both

  16. Feasibility of laryngeal mask airway ventilation in mechanical rescue%医疗救援中喉罩通气的可行性研究

    Institute of Scientific and Technical Information of China (English)

    董兰; 雷志礼; 韩曙君; 李占军

    2013-01-01

    目的 分析喉罩的可操作性、安全性、通气参数及并发症,探讨其在灾害医疗救援中应用的可行性.方法 随机选择的择期全麻手术患者100例,随机均分为2组:初次使用组(A)和熟练使用组(B),分别由初次使用(使用喉罩10~20例)和熟练掌握(超过100例)喉罩的医生各10人放置喉罩.麻醉诱导待脑电双频指数值达到50时放置喉罩,位置满意后,接呼吸机控制呼吸,并根据潮气末二氧化碳(PETCO2)结果调整呼吸频率、潮气量,维持气道峰压(Ppeak) 10~30 cmH2O,PETCO233~55 mmHg,血氧饱和度(SpO2)≥96%.记录喉罩放置难易程度、安全性、气道最大密封压、通气相关参数和并发症.结果 两组患者均顺利完成机械通气,喉罩插入操作的难易程度和安全性无统计学差异(均P> 0.05).两组患者Ppeak在T3和T4时明显高于T2(均P< 0.05),其余各参数两组间差异无统计学意义(均P> 0.05).A、B组患者术后主诉咽喉轻度不适分别为4例和2例;A组有1例患者术后胃胀气;两组患者均未发生术中知晓.结论 喉罩可操作性强、安全有效,具有良好的气道耐受性和舒适性,可考虑在医疗救援中应用.%Objective To investigate the feasibility of using laryngeal mask airway (LMA) in medical rescue by analyzing the security, ventilation data and complications of laryngeal mask airway (LMA). Methods One hundred randomly selected patients undergoing elective surgery under general anesthesia were randomly divided into 2 equal groups: Group A undergoing insertion of LMA by 10 anesthesiologists, who had used LMA no more than 20 times and Group B undergoing insertion of LMA by 10 experienced anesthesiologists, who had used LMA more than 100 times. The LMA was inserted when the bispectral index reached 50, then controlled ventilation was performed. The frequency and tidal volume(VT) were adjusted according to the end-tidal carbon dioxide partial pressure (PETCO2). The peak

  17. Structures and Mechanisms Design Concepts for Adaptive Deployable Entry Placement Technology

    Science.gov (United States)

    Yount, Bryan C.; Arnold, James O.; Gage, Peter J.; Mockelman, Jeffrey; Venkatapathy, Ethiraj

    2012-01-01

    System studies have shown that large deployable aerodynamic decelerators such as the Adaptive Deployable Entry and Placement Technology (ADEPT) concept can revolutionize future robotic and human exploration missions involving atmospheric entry, descent and landing by significantly reducing the maximum heating rate, total heat load, and deceleration loads experienced by the spacecraft during entry [1-3]. ADEPT and the Hypersonic Inflatable Aerodynamic Decelerator (HIAD) [4] share the approach of stowing the entry system in the shroud of the launch vehicle and deploying it to a much larger diameter prior to entry. The ADEPT concept provides a low ballistic coefficient for planetary entry by employing an umbrella-like deployable structure consisting of ribs, struts and a fabric cover that form an aerodynamic decelerator capable of undergoing hypersonic flight. The ADEPT "skin" is a 3-D woven carbon cloth that serves as a thermal protection system (TPS) and as a structural surface that transfers aerodynamic forces to the underlying ribs [5]. This paper focuses on design activities associated with integrating ADEPT components (cloth, ribs, struts and mechanisms) into a system that can function across all configurations and environments of a typical mission concept: stowed during launch, in-space deployment, entry, descent, parachute deployment and separation from the landing payload. The baseline structures and mechanisms were selected via trade studies conducted during the summer and fall of 2012. They are now being incorporated into the design of a ground test article (GTA) that will be fabricated in 2013. It will be used to evaluate retention of the stowed configuration in a launch environment, mechanism operation for release, deployment and locking, and static strength of the deployed decelerator. Of particular interest are the carbon cloth interfaces, underlying hot structure, (Advanced Carbon- Carbon ribs) and other structural components (nose cap, struts, and

  18. Feasibility Study on Soilless Cultivation of Organic Ginseng

    Institute of Scientific and Technical Information of China (English)

    Yuji JIN; Hongyan ZHAO; Xiangguo LI; Renzhe PIAO

    2015-01-01

    Based on the present situation and problems concerning ginseng cultivation as well as soilless cultivation features,we analyze the growth indicators and input-output ratio of different ginseng cultivation patterns,and conform that the soilless cultivation technology for organic ginseng is feasible. And this technology provides theoretical basis and technological feasibility for the sustainable development of ginseng industry.

  19. CO2-Binding Organic Liquids Gas Capture with Polarity-Swing-Assisted Regeneration Full Technology Feasibility Study B1 - Solvent-based Systems

    Energy Technology Data Exchange (ETDEWEB)

    Heldebrant, David J

    2014-08-31

    PNNL, Fluor Corporation and Queens University (Kingston, ON) successfully completed a three year comprehensive study of the CO2BOL water-lean solvent platform with Polarity Swing Assisted Regeneration (PSAR). This study encompassed solvent synthesis, characterization, environmental toxicology, physical, thermodynamic and kinetic property measurements, Aspen Plus™ modeling and bench-scale testing of a candidate CO2BOL solvent molecule. Key Program Findings The key program findings are summarized as follows: • PSAR favorably reduced stripper duties and reboiler temperatures with little/no impact to absorption column • >90% CO2 capture was achievable at reasonable liquid-gas ratios in the absorber • High rich solvent viscosities (up to 600 cP) were successfully demonstrated in the bench-scale system. However, the projected impacts of high viscosity to capital cost and operational limits compromised the other levelized cost of electricity benefits. • Low thermal conductivity of organics significantly increased the required cross exchanger surface area, and potentially other heat exchange surfaces. • CO2BOL had low evaporative losses during bench-scale testing • There was no evidence of foaming during bench scale testing • Current CO2BOL formulation costs project to be $35/kg • Ecotoxicity (Water Daphnia) was comparable between CO2BOL and MEA (169.47 versus 103.63 mg/L) • Full dehydration of the flue gas was determined to not be economically feasible. However, modest refrigeration (13 MW for the 550 MW reference system) was determined to be potentially economically feasible, and still produce a water-lean condition for the CO2BOLs (5 wt% steady-state water loading). • CO2BOLs testing with 5 wt% water loading did not compromise anhydrous performance behavior, and showed actual enhancement of CO2 capture performance. • Mass transfer of CO2BOLs was not greatly impeded by viscosity • Facile separation of antisolvent from lean CO2BOL was

  20. The New Jersey Institute of Technology Robot-Assisted Virtual Rehabilitation (NJIT-RAVR system for children with cerebral palsy: a feasibility study

    Directory of Open Access Journals (Sweden)

    Kelly Donna

    2009-11-01

    Full Text Available Abstract Background We hypothesize that the integration of virtual reality (VR with robot assisted rehabilitation could be successful if applied to children with hemiparetic CP. The combined benefits of increased attention provided by VR and the larger training stimulus afforded by adaptive robotics may increase the beneficial effects of these two approaches synergistically. This paper will describe the NJIT-RAVR system, which combines adaptive robotics with complex VR simulations for the rehabilitation of upper extremity impairments and function in children with CP and examine the feasibility of this system in the context of a two subject training study. Methods The NJIT-RAVR system consists of the Haptic Master, a 6 degrees of freedom, admittance controlled robot and a suite of rehabilitation simulations that provide adaptive algorithms for the Haptic Master, allowing the user to interact with rich virtual environments. Two children, a ten year old boy and a seven year old girl, both with spastic hemiplegia secondary to Cerebral Palsy were recruited from the outpatient center of a comprehensive pediatric rehabilitation facility. Subjects performed a battery of clinical testing and kinematic measurements of reaching collected by the NJIT-RAVR system. Subjects trained with the NJIT-RAVR System for one hour, 3 days a week for three weeks. The subjects played a combination of four or five simulations depending on their therapeutic goals, tolerances and preferences. Games were modified to increase difficulty in order to challenge the subjects as their performance improved. The testing battery was repeated following the training period. Results Both participants completed 9 hours of training in 3 weeks. No untoward events occurred and no adverse responses to treatment or complaints of cyber sickness were reported. One participant showed improvements in overall performance on the functional aspects of the testing battery. The second subject made

  1. The New Jersey Institute of Technology Robot-Assisted Virtual Rehabilitation (NJIT-RAVR) system for children with cerebral palsy: a feasibility study.

    Science.gov (United States)

    Qiu, Qinyin; Ramirez, Diego A; Saleh, Soha; Fluet, Gerard G; Parikh, Heta D; Kelly, Donna; Adamovich, Sergei V

    2009-11-16

    We hypothesize that the integration of virtual reality (VR) with robot assisted rehabilitation could be successful if applied to children with hemiparetic CP. The combined benefits of increased attention provided by VR and the larger training stimulus afforded by adaptive robotics may increase the beneficial effects of these two approaches synergistically. This paper will describe the NJIT-RAVR system, which combines adaptive robotics with complex VR simulations for the rehabilitation of upper extremity impairments and function in children with CP and examine the feasibility of this system in the context of a two subject training study. The NJIT-RAVR system consists of the Haptic Master, a 6 degrees of freedom, admittance controlled robot and a suite of rehabilitation simulations that provide adaptive algorithms for the Haptic Master, allowing the user to interact with rich virtual environments. Two children, a ten year old boy and a seven year old girl, both with spastic hemiplegia secondary to Cerebral Palsy were recruited from the outpatient center of a comprehensive pediatric rehabilitation facility. Subjects performed a battery of clinical testing and kinematic measurements of reaching collected by the NJIT-RAVR system. Subjects trained with the NJIT-RAVR System for one hour, 3 days a week for three weeks. The subjects played a combination of four or five simulations depending on their therapeutic goals, tolerances and preferences. Games were modified to increase difficulty in order to challenge the subjects as their performance improved. The testing battery was repeated following the training period. Both participants completed 9 hours of training in 3 weeks. No untoward events occurred and no adverse responses to treatment or complaints of cyber sickness were reported. One participant showed improvements in overall performance on the functional aspects of the testing battery. The second subject made improvements in upper extremity active range of motion and

  2. Feasibility study on the demonstrative test on the hybrid mini hydroelectric power generation technology. 2; Hybrid gata mini suiryoku hatsuden gijutsu ni kakawaru jissho shiken kanosei chosa. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    A study was made for the purpose of electrification of unelectrified zones of the mountainous areas in developing countries using extremely small hydroelectric power facilities. The target for this project is a development of a micro hydroelectric power system with a size of about 5kW, which is estimated regarding that 1 village has 80 houses and each house needs electricity of 60W. In the study, the low-head system using a weir of irrigation channels in Subang pref. of West Java state was selected by the evaluation of access, stability of flow rate, natural conditions, etc. The hydroelectric power plant is of a flow-in method in which water is taken from the left bank and is injected/discharged to the downstream of the left bank. As the hybrid complementary power source, hybrid battery with a two-hour charging time at peak and a capacity of 3.5kWh was considered. When estimating the construction cost of the hybrid micro hydroelectric power system and equalizing by durable years, the operational cost per kW is 15 times higher than the benefits which local people receive. It was judged to be difficult to say that the micro hydroelectric power system is economically feasible. It was predicted that the financial profit during the demonstrative test is good, according to a trial calculation of income from power rates and the operational cost. 18 refs., 90 figs., 53 tabs.

  3. JPRS Report, Science & Technology, USSR: Materials Science, Mechanics and Technology of Metal and Metal Ceramic Composite Material Products

    Science.gov (United States)

    1990-09-27

    produced, their phase composition and bending strength, as well as investigation of the promise of adding niobium carbide NbC to these materials. The...time increases, NbC does not inhibit shrink- niobium carbide was the same — 3 %. This content of age, which is a technological advantage. NbC is

  4. Efficacy and mechanisms of murine norovirus inhibition by pulsed-light technology.

    Science.gov (United States)

    Vimont, Allison; Fliss, Ismaïl; Jean, Julie

    2015-04-01

    Pulsed light is a nonthermal processing technology recognized by the FDA for killing microorganisms on food surfaces, with cumulative fluences up to 12 J cm(-2). In this study, we investigated its efficacy for inactivating murine norovirus 1 (MNV-1) as a human norovirus surrogate in phosphate-buffered saline, hard water, mineral water, turbid water, and sewage treatment effluent and on food contact surfaces, including high-density polyethylene, polyvinyl chloride, and stainless steel, free or in an alginate matrix. The pulsed-light device emitted a broadband spectrum (200 to 1,000 nm) at a fluence of 0.67 J cm(-2) per pulse, with 2% UV at 8 cm beneath the lamp. Reductions in viral infectivity exceeded 3 log10 in less than 3 s (5 pulses; 3.45 J cm(-2)) in clear suspensions and on clean surfaces, even in the presence of alginate, and in 6 s (11 pulses; 7.60 J cm(-2)) on fouled surfaces except for stainless steel (2.6 log10). The presence of protein or bentonite interfered with viral inactivation. Analysis of the morphology, the viral proteins, and the RNA integrity of treated MNV-1 allowed us to elucidate the mechanisms involved in the antiviral activity of pulsed light. Pulsed light appeared to disrupt MNV-1 structure and degrade viral protein and RNA. The results suggest that pulsed-light technology could provide an effective alternative means of inactivating noroviruses in wastewaters, in clear beverages, in drinking water, or on food-handling surfaces in the presence or absence of biofilms. Copyright © 2015, American Society for Microbiology. All Rights Reserved.

  5. Study of technical feasibility and the payback period of the invested capital for the installation of a grid-connected photovoltaic system at the library of the Technological Federal University of Paraná

    Directory of Open Access Journals (Sweden)

    Henrique Marin Campos, Ana Katherine Rodríguez Manrique, Bruno Victor Kobiski, Eloy Fassi Casagrande Júnior, Jair Urbanetz Junior

    2014-01-01

    Full Text Available This article shows the technical feasibility, and the payback period of the capital invested to install a Grid-connected Photovoltaic (PV system on the rooftop of the library of the Technological Federal University of Parana (UTFPR, Curitiba campus. The rooftop has 897 square meters, and the photovoltaic modules will be used to supply electricity to four consumption scenarios. It is hoped that with the normative resolution 482 of the National Agency of Electric Energy (ANEEL, published in April 2012, the payback period on the initial investment of the PV system is shorter than when there was no such resolution. It is known that, although the resolution represents a breakthrough for inserting the Grid-connected Photovoltaic power generation, it is still not enough to expand this technology. The high tax of the PV equipment and the absence of incentives for this form of generation still prevent large-scale use. In addition, this article also shows the PV systems installed in Florianópolis (LABSOLAR / UFSC and Curitiba, such as the Green Office (GO, which is situated at the Technological Federal University of Parana.

  6. Discussion on the Feasibility of Public Service of Agricultural Science and Technology Information Services%我国农业科教信息服务公益化可行性探讨

    Institute of Scientific and Technical Information of China (English)

    白玉宝

    2011-01-01

    According to the development of agricultural science and education,information services and promotion,combined with the agricultural technology development plan of the State Science and Technology,Ministry of Agriculture,the strategy of providing agricultural science and technology information for the agriculture production engager in the new era was discussed.According to China's actual conditions,It was pointed out the urgency of improving the agricultural population quality,as well as the feasibility and necessity of providing the public agricultural information service.%针对目前我国农业科教信息服务发展和推广的现状,结合国家科委、农业部有关农业科技发展规划,探讨了新时期农业科教信息为一线农业提供服务的方式,根据我国的实际国情,提出了未来农业人口整体素质提高的迫切性,实现农业信息服务公益化的可行性和必要性。

  7. Development of Image Overlay and Knowledge Transfer Module Technologies Aimed at Enhancing Feasibility and External Validation of Magnetic Resonance Imaging-based Scoring Systems.

    Science.gov (United States)

    Jaremko, Jacob L; Pitts, Meaghan; Maksymowych, Walter P; Lambert, Robert G

    2016-01-01

    Semiquantitative arthritis scoring assesses disease burden by scoring presence/extent of features such as bone marrow lesion (BML) or effusion in multiple anatomic regions at a joint. An image overlay clarifying region borders may enhance feasibility and reliability of these scoring systems. To be scalable for use in large clinical trials, systematic computer-based user training is desirable. We developed an overlay and user training module for magnetic resonance imaging (MRI)-based scoring of hip osteoarthritis (OA). We designed a semitransparent 2-dimensional image overlay applied to individual MRI slices to facilitate hip OA scoring [HIMRISS (Hip Inflammation MRI Scoring System)], initially using freeware and then in a customized HTML Web browser environment. We developed a systematic knowledge translation package including instructional presentation, fully scored expert consensus cases, and video tutorials for training in the use of these scoring systems with the overlays. Three musculoskeletal radiologists who had not used this scoring system before each performed a scoring exercise with no overlay, then repeated this with overlays after completing the training module. Based on postexercise interviews and a reader survey, we identified and corrected problems in the module. The entire training process was then repeated using 3 new readers. Overlays were considered useful, particularly when integrated into a Web browser. The knowledge translation module was considered conceptually valuable, but as initially implemented was too lengthy and not sufficiently interactive. Semitransparent image overlays and standardized knowledge translation modules for reader training show promise to facilitate reader calibration using MRI-based scoring systems. Based on our experience, knowledge translation modules should emphasize close feedback evaluating performance and reader time efficiency.

  8. A research feasibility study proposal for conducting experimental research in curriculum sharing via Communications Technology Satellite among institutions having large minority enrollments

    Science.gov (United States)

    Williams, L., Jr.

    1978-01-01

    The applicability of the tele-conference method of curriculum sharing as well as the sharing of scientific research results between universities and industrial organizations was evaluated in relation to other techniques and methods. Ten universities cooperated with NC A&T State University in an effort to increase the number of minority scientists and engineers in the USA via the utilization of the communication features of satellites. Research activities, experiments and studies in curriculum sharing are described as well as the techniques, interconnections and equipment utilized. Suggested methods and recommendations for a continuation of innovative applications of satellite technology in higher education at NC A&T State University are included.

  9. Telepsychiatry: effectiveness and feasibility

    Directory of Open Access Journals (Sweden)

    Gajaria A

    2015-04-01

    Full Text Available Amy Gajaria,1 David K Conn,1,2 Robert Madan1,2 1Department of Psychiatry, University of Toronto, Toronto, ON, Canada; 2Department of Psychiatry, Baycrest Health Sciences, Toronto, ON, Canada Abstract: Providing psychiatric services by real-time videoconferencing has been increasingly adopted as a method of reaching hard-to-serve populations since the early 1990s. As the field has expanded, a growing body of research has developed investigating both how telepsychiatry compares to in-person psychiatric care and how effectively telepsychiatry can be implemented in routine clinical care. A narrative review was performed to consider the evidence that telepsychiatry is feasible and effective across a variety of patient populations and clinical settings. There is a growing body of evidence investigating the efficacy of telepsychiatry when used for psychiatric assessment and treatment in the adult, child, and geriatric populations. Though studies vary in quality, they generally demonstrate that telepsychiatry is effective across multiple age groups and clinical settings. Telepsychiatry is generally well accepted by patients and clinicians and is feasible to implement, with the suggestion that some patients may actually prefer telepsychiatry to in-person treatment. Issues to consider in the implementation of telepsychiatry services include funding and reimbursement, medico-legal issues when provision crosses legislative boundaries, incorporation into existing health systems, and crosscultural considerations. Future directions for research and practice include a need for higher-quality efficacy studies, consideration of data security, increased attention to low- and middle-income countries, and the introduction of novel technological approaches. Keywords: efficacy, service delivery, telemental health, videoconferencing 

  10. Research on the feasibility of moon base construction by 3d printing technology%3D打印月球基地可行性研究

    Institute of Scientific and Technical Information of China (English)

    宋靖华; 鲍明

    2015-01-01

    3D打印技术具有直接打印任意形状的建筑物和复杂结构体系的能力,在建筑界受到越来越多的关注.3D打印技术将惰性材料打印为建筑物,极大提高了建构太空空间可能.本文通过实验手段,验证了在月球恶劣的环境下,利用3D打印技术和月球土壤建设月球基地的可能性.%3D printing technology can construct arbitrary shape structure or complex structure system directly , which makes it draw more and more atention. 3 d printing is to print inert materials for building, and it greatly improve the possibility of the space construction. In this paper, experimental method was introduced , which was verified under the harsh environment of the moon, using 3 d printing technology and the possibility of lunar soil construction base on the moon.

  11. Fabrication of fiber-optic broadband ultrasound emitters by micro-opto-mechanical technology

    Science.gov (United States)

    Belsito, L.; Vannacci, E.; Mancarella, F.; Ferri, M.; Veronese, G. P.; Biagi, E.; Roncaglia, A.

    2014-08-01

    A micro-opto-mechanical system (MOMS) technology for the fabrication of fiber-optic optoacoustic emitters is presented. The described devices are based on the thermoelastic generation of ultrasonic waves from patterned carbon films obtained by the controlled pyrolysis of photoresist layers and fabricated on miniaturized single-crystal silicon frames used to mount the emitters on the tip of an optical fiber. Thanks to the micromachining process adopted, high miniaturization levels are reached in the fabrication of the emitters, and self-standing devices on optical fiber with diameter around 350 µm are demonstrated, potentially suited to minimally invasive medical applications. The functional testing of fiber-optic emitter prototypes in water performed by using a 1064 nm Q-switched Nd-YAG excitation laser source is also presented, yielding broadband emission spectra extended from low frequencies up to more than 40 MHz, and focused emission fields with a maximum peak-to-peak pressure level of about 1.2 MPa at a distance of 1 mm from the devices.

  12. Application of Omics Technologies for evaluation of antibacterial mechanisms of action of plant-derived products

    Directory of Open Access Journals (Sweden)

    Bruno Souza dos Santos

    2016-09-01

    Full Text Available In the face of increasing bacterial resistance to antibiotics currently in use, the search for new antimicrobial agents has received a boost in recent years, with natural products playing an important role in this field. In fact, several methods have been proposed to investigate the antibacterial activities of natural products. However, given that the ultimate aim is future therapeutic use as novel drugs, it is extremely necessary to elucidate their modes of action, stating the molecular effects in detail and identifying their targets in the bacterial cell. This review analyzes the application of omics technologies to understand the antibacterial mechanisms of bioactive natural products, to stimulate research interest in this area and promote scientific collaborations. Some studies have been specifically highlighted herein by examining their procedures and results (targeted proteins and metabolic pathways. These approaches have the potential to provide new insights into our comprehension of antimicrobial resistance/susceptibility, creating new perspectives for the struggle against bacteria, and leading to the development of novel products in the future.

  13. A study on using image serving technology for high precision mechanical positioning

    Science.gov (United States)

    Lin, Chuen-Horng; Hsiao, Muh-Don; Lai, Kuo-Jung

    2016-12-01

    This paper focused on using image server technology for high precision mechanical positioning. Rapid and precise positioning systems depend on the correct positions of CCD (Charge Coupled Device) video cameras, as well as on pattern matching modes. This study deals with four different positions captured by an automatic detection system employing a CCD video camera. According to a variety of hybrid image registration systems, this study proposes an entire set of methods for achieving optimal hybrid pattern matching. First, the four different position detections captured by the CCD video camera in low-resolution were examined. Next, the original position detection was carried out in high-resolution, in order to derive a precise set of CCD video camera positions. The fiducial mark (FM) was then divided into two types in the optimal option for pattern matching: the "fiducial mark" and "non-fiducial mark", which were then used for sampling. The automatic detection method is able to achieve the first pattern matching detection for recognized images. Unrecognized images or images that cannot have an FM were subjected to fine pattern matching detection. When it is not possible to find more than one FM after the proposed detection method, this suggests that the position of the CCD video camera should be reset. In this paper, the results of the experiment regarding the CCD camera precision location and the segmentation of fiducial patterns or insignificant fiducial patterns can detect and segment more unique areas and areas with unique features.

  14. [Screening of anti-aging active ingredients and mechanism analysis based on molecular docking technology].

    Science.gov (United States)

    Du, Ran-Feng; Zhang, Xiao-Hua; Ye, Xiao-Tong; Yu, Wen-Kang; Wang, Yun

    2016-07-01

    Dampness evil is the source of all diseases, which is easy to cause disease and promote aging, while aging could also promote the occurence and development of diseases. In this paper, the relationship between the dampness evil and aging would be discussed, to find the anti-aging active ingredients in traditional Chinese medicine (TCM), and analyze the anti-aging mechanism of dampness eliminating drug. Molecular docking technology was used, with aging-related mammalian target of rapamycin as the docking receptors, and chemical components of Fuling, Sangzhi, Mugua, Yiyiren and Houpo as the docking molecules, to preliminarily screen the anti-aging active ingredients in dampness eliminating drug. Through the comparison with active drugs already on the market (temsirolimus and everolimus), 12 kinds of potential anti-aging active ingredients were found, but their drug gability still needs further study. The docking results showed that various components in the dampness eliminating drug can play anti-aging activities by acting on mammalian target of rapamycin. This result provides a new thought and direction for the method of delaying aging by eliminating dampness. Copyright© by the Chinese Pharmaceutical Association.

  15. Study on mechanisms of different sulfuric acid leaching technologies of chromite

    Science.gov (United States)

    Shi, Pei-yang; Liu, Cheng-jun; Zhao, Qing; Shi, Hao-nan

    2017-09-01

    The extraction of chromate from chromite via the sulfuric acid leaching process has strong potential for practical use because it is a simple and environmentally friendly process. This paper aims to study the sulfuric acid leaching process using chromite as a raw material via either microwave irradiation or in the presence of an oxidizing agent. The results show that the main phases in Pakistan chromite are ferrichromspinel, chrompicotite, hortonolite, and silicate embedded around the spinel phases. Compared with the process with an oxidizing agent, the process involving microwaves has a higher leaching efficiency. When the mass fraction of sulfuric acid was 80% and the leaching time was 20 min, the efficiency could exceed 85%. In addition, the mechanisms of these two technologies fundamentally differ. When the leaching was processed in the presence of an oxidizing agent, the silicate was leached first and then expanded. By contrast, in the case of leaching under microwave irradiation, the chromite was dissolved layer by layer and numerous cracks appeared at the particle surface because of thermal shock. In addition, the silicate phase shrunk instead of expanding.

  16. Research on the denitration mechanism of fly ash catalysts modified by low-temperature plasma technology

    Directory of Open Access Journals (Sweden)

    Wen-jie Nie

    2017-08-01

    Full Text Available There are three different fly ashes mixed with bentonite respectively as raw material to preparation of denitration catalyst. Then the catalyst combined with the low temperature plasma for denitration. The different mixing ratio, drying temperature and drying time of catalyst preparation were studied. The denitration mechanism of fly ash catalyst modified with different gases (O2, N2, Ar, and hydrocarbon gas by low-temperature plasma technology was studied. The compositions of fly ash were detected by element analysis, ICP analysis, Boehm analysis, and Infrared spectral analysis which affected the denitration performance of fly ash catalyst. And we discussed the effect of denitration performance with different types of fly ash and plasma power. The results shown that: fly ash mixed with bentonite for 2:1, drying temperature is 100°C and drying time is 30 min are the optimal preparation conditions; The denitration performance is best of the catalyst which produced by circulating fluidized bed when the plasma power is 30 W. And Oxygen can be used as the modification gas for preparing the fly-ash catalyst. There are more basic functional groups on the surface of fly ash catalyst modified with oxygen atmosphere and the N=O plays a main role.

  17. Energy Saving Melting and Revert Reduction Technology (E-SMARRT): Mechanical Performance of Dies

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller, Principal Investigator; Kabiri-Bamoradian, Contributors: Khalil; Delgado-Garza, Abelardo; Murugesan, Karthik; Ragab, Adham

    2011-09-13

    As a net shape process, die casting is intrinsically efficient and improvements in energy efficiency are strongly dependent on design and process improvements that reduce scrap rates so that more of the total consumed energy goes into acceptable, usable castings. A casting that is distorted and fails to meet specified dimensional requirements is typically remelted but this still results in a decrease in process yield, lost productivity, and increased energy consumption. This work focuses on developing, and expanding the use of, computer modeling methods that can be used to improve the dimensional accuracy of die castings and produce die designs and machine/die setups that reduce rejection rates due to dimensional issues. A major factor contributing to the dimensional inaccuracy of the casting is the elastic deformations of the die cavity caused by the thermo mechanical loads the dies are subjected to during normal operation. Although thermal and die cavity filling simulation are widely used in the industry, structural modeling of the die, particularly for managing part distortion, is not yet widely practiced. This may be due in part to the need to have a thorough understanding of the physical phenomenon involved in die distortion and the mathematical theory employed in the numerical models to efficiently model the die distortion phenomenon. Therefore, two of the goals of this work are to assist in efforts to expand the use of structural modeling and related technologies in the die casting industry by 1) providing a detailed modeling guideline and tutorial for those interested in developing the necessary skills and capability and 2) by developing simple meta-models that capture the results and experience gained from several years of die distortion research and can be used to predict key distortion phenomena of relevance to a die caster with a minimum of background and without the need for simulations. These objectives were met. A detailed modeling tutorial was

  18. Local and Global Mechanical Behavior and Microstructure of Ti6Al4V Parts Built Using Electron Beam Melting Technology

    Science.gov (United States)

    Ladani, Leila

    2015-09-01

    Laser and electron beam melting are prime technologies in metallic powder bed additive manufacturing in which parts are built layer by layer using high energy source. The technology is at a level where each layer can be as thin as 50 µm. Melting and solidification of each powder layer is typically accompanied by some subsurface melting to assure adherence and fusion of layers. In addition to anisotropic mechanical behavior of material caused by layering phenomenon, it is expected that the local mechanical behavior and microstructure vary throughout each build. In this manuscript, local and global mechanical behavior of Ti6Al4V parts produced using electron beam melting technology is investigated using bulk scale mechanical testing and nanoindentation. Parts fabricated in different build orientation were tested at different strain rates at a large scale. The experiment showed that strength is minimal perpendicular to the build plate. Additionally, material exhibited different local mechanical properties relative to distance from base plate. Investigation of the microstructure indicated very distinguished variations in the grain size and alpha and beta phase formation of material in different locations of part relative to build plate. Strength reduction in perpendicular direction is examined and explained through understanding of the microstructure and plastic deformation mechanism in α phase and prior β grains.

  19. The Development of Productivity Practical Management Model at Automotive Mechanical Technology Skill Program in Semarang Vocational Schools, Indonesia

    Science.gov (United States)

    Hadromi; Rachman, Maman; Soesanto; Kartana, Tri Jaka

    2015-01-01

    The purpose of this research is to develop automotive Mechanical Technology Skill Program (TMO) in Vocational School. The Research and Development (R&D) object was done in SMK 1, 4 and 7 Semarang, Indonesia. The result was achieved productivity Practical Management Final Model at TMO skill Program in Vocational school named momanticproter.…

  20. Deformation mechanism of surrounding rocks and key control technology for a roadway driven along goaf in fully mechanized top-coal caving face

    Institute of Scientific and Technical Information of China (English)

    李学华

    2003-01-01

    The variation of the stress in the bolted surrounding rocks structure of the roadway driven along goaf in a fully mechanized top-coal caving face with moderate stable conditions are studied by using numerical calculation. The essential deformation characteristics of the surrounding rocks in this kind of roadway are obtained and the key technology of bolting support used under these conditions is put forward.

  1. Deformation mechanism of surrounding rocks and key control technology for a roadway driven along goaf in fully mechanized top-coal caving face

    Energy Technology Data Exchange (ETDEWEB)

    Li, X. [China University of Mining and Technology, Xuzhou (China). School of Energy Science and Engineering

    2003-06-01

    The variation of the stress in the bolted surrounding rocks structure of the roadway driven along the goaf in a fully mechanized top-coal caving face with moderate stable conditions are studied by using numerical calculation. The essential deformation characteristics of the surrounding rocks in this kind of roadway are obtained and the key technology of bolting support used under these conditions is put forward. 3 refs., 2 figs., 1 tab.

  2. Study of the feasibility of distributed cathodic arc as a plasma source for development of the technology for plasma separation of SNF and radioactive wastes

    Energy Technology Data Exchange (ETDEWEB)

    Amirov, R. Kh.; Vorona, N. A.; Gavrikov, A. V.; Liziakin, G. D.; Polistchook, V. P.; Samoylov, I. S.; Smirnov, V. P.; Usmanov, R. A., E-mail: ravus46@yandex.ru; Yartsev, I. M. [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)

    2015-12-15

    One of the key problems in the development of plasma separation technology is designing a plasma source which uses condensed spent nuclear fuel (SNF) or nuclear wastes as a raw material. This paper covers the experimental study of the evaporation and ionization of model materials (gadolinium, niobium oxide, and titanium oxide). For these purposes, a vacuum arc with a heated cathode on the studied material was initiated and its parameters in different regimes were studied. During the experiment, the cathode temperature, arc current, arc voltage, and plasma radiation spectra were measured, and also probe measurements were carried out. It was found that the increase in the cathode heating power leads to the decrease in the arc voltage (to 3 V). This fact makes it possible to reduce the electron energy and achieve singly ionized plasma with a high degree of ionization to fulfill one of the requirements for plasma separation of SNF. This finding is supported by the analysis of the plasma radiation spectrum and the results of the probe diagnostics.

  3. Feasibility analysis on detecting and tracking space target by laser illumination technology at the daytime%白天激光照明探测跟踪空间目标可行性分析

    Institute of Scientific and Technical Information of China (English)

    康文运; 宋小全

    2011-01-01

    In allusion to the difficult problem of detecting and tracking space target at the daytime,a type of laser illumination system for detecting and tracking space target is designed. Noise of sky background at the daytime,laser echo signal of space target and contrast of target and background are estimated,technology feasibility of detecting and tracking space target by laser illumination is analyzed. The basic technique request and key technology of detecting and tracking space target by laser illumination are generalized.%针对白天探测跟踪空间目标技术难题,从照明激光选取入手,设计了激光照明探测跟踪系统,估算了白天天空背景噪声、空间目标激光回波信号及目标与背景对比度,分析了白天激光照明探测跟踪空间目标的技术可行性,概括了实现白天激光照明探测跟踪空间目标的基本技术要求和需突破的关键技术.

  4. Research report for fiscal 1998. Research into the feasibility of exchange of studies for the development and promotion of global environment-related industrial technologies; 1998 nendo chikyu kankyo sangyo gijutsu kaihatsu suishin jigyo. Kenkyu koryu kanosei chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The above was conducted by Research Institute of Innovative Technology for the Earth (RITE). Worldwide collaboration is mandatory for the settlement of environmental problems for the earth, and RITE is positively promoting its interaction with research institutes abroad. In fiscal 1998, it sent research teams to government organizations and research institutes in Europe and America for studies there. A study in Europe involved the preparation of chemicals from CO2 by virtue of novel biotic reactions, and RITE's microbial molecular function laboratory plans to start a leading study in fiscal 1999. In relation with environmental impact reducing technologies using sunlight-aided photocatalysts, visits were paid to three research institutes in America. RITE itself has developed a powdered semiconductor catalyst and is engaged in the study of producing hydrogen by decomposition of water using solar energy. Concerning the production of saccharides out of farm wastes remaining unused, researches were made into the feasibility of joint studies with some advanced research institutes in America. Discussions were made about the performance- and stability-related improvement of enzymes usable for the decomposition of biomass, the analysis of biological environmental circumstances that substance yielding microbes find themselves in under anaerobic conditions, etc. (NEDO)

  5. Steel fiber reinforced concrete pipes: part 1: technological analysis of the mechanical behavior

    Directory of Open Access Journals (Sweden)

    A. D. de Figueiredo

    Full Text Available This paper is the first part of an extensive work focusing the technological development of steel fiber reinforced concrete pipes (FRCP. Here is presented and discussed the experimental campaign focusing the test procedure and the mechanical behavior obtained for each of the dosages of fiber used. In the second part ("Steel fiber reinforced concrete pipes. Part 2: Numerical model to simulate the crushing test", the aspects of FRCP numerical modeling are presented and analyzed using the same experimental results in order to be validated. This study was carried out trying to reduce some uncertainties related to FRCP performance and provide a better condition to the use of these components. In this respect, an experimental study was carried out using sewage concrete pipes in full scale as specimens. The diameter of the specimens was 600 mm, and they had a length of 2500 mm. The pipes were reinforced with traditional bars and different contents of steel fibers in order to compare their performance through the crushing test. Two test procedures were used in that sense. In the 1st Series, the diameter displacement was monitored by the use of two LVDTs positioned at both extremities of the pipes. In the 2nd Series, just one LVDT is positioned at the spigot. The results shown a more rigidity response of the pipe during tests when the displacements were measured at the enlarged section of the socket. The fiber reinforcement was very effective, especially when low level of displacement was imposed to the FRCP. At this condition, the steel fibers showed an equivalent performance to superior class pipes made with traditional reinforced. The fiber content of 40 kg/m3 provided a hardening behavior for the FRCP, and could be considered as equivalent to the critical volume in this condition.

  6. Feasibility Analysis of Technology on Storage Battery for Non-outage Maintenance in Distribution Network%以蓄电池作配电网不停电作业电源的技术可行性分析

    Institute of Scientific and Technical Information of China (English)

    唐龙江; 胡海琴; 汪宏华

    2013-01-01

      The development of portable power source technology is firstly introduced and a new power source technology based on storage battery for non-outage maintenance is presented. By analyzing the relationship of battery amount, power supply time and capacity, the applicable scope is then studied. The non-outage maintenance for outage accidents of Huangshan distribution grid are used to check the feasibility and economic efficiency of the technology presented preliminarily. The result shows that technology is useful for non-outage maintenance of distribution grid and, it has the advantage of wide application scope and flexibility. With the development of storage battery and electric vehicle technology, the technology presented will be more economical and practical in the near future.%  介绍了移动电源技术的发展情况,提出了一种以蓄电池作不停电作业电源的新技术,分析了电池组数与供电时间及供电容量的关系,研究了该技术的适用范围,并以黄山电网的两起典型配网停电事故的不停电检修作为算例,对蓄电池作配电网不停电检修电源技术的可行性及经济性进行了验证。结果表明:蓄电池作不停电作业电源技术适宜在配电网不停电检修中应用,且该技术适用范围广,灵活性优势明显。今后随着蓄电池和电动汽车技术的发展,该技术的应用将更为经济、实用。

  7. Product Development Partnerships: Case studies of a new mechanism for health technology innovation.

    Science.gov (United States)

    Mahoney, Richard T

    2011-08-26

    There is a continuing need for new health technologies to address the disease burdens of developing countries. In the last decade Product Development Partnerships (PDP) have emerged that are making important contributions to the development of these technologies. PDPs are a form of public private partnerships that focus on health technology development. PDPs reflect the current phase in the history of health technology development: the Era of Partnerships, in which the public and private sectors have found productive ways to collaborate. Successful innovation depends on addressing six determinants of innovation. We examine four case studies of PDPs and show how they have addressed the six determinants to achieve success.

  8. NGST Yardstick Integrated Science Instrument Module (ISIM) Feasibility Study

    Science.gov (United States)

    Greenhouse, M. A.; Dipirro, M.; Federline, B.; Gardner, Jonathan P.; Guy, P.; Hagopian, J.; Hein, J.; Jurotich, M.; Lawrence, J.; Martineau, B.; Mather, J. C.; Mentzell, E.; Satyapal, S.; Stanley, D.; Teplitz, H. I.; Travis, J.; Bely, P.; Petro, L. D.; Stockman, P.; Burg, R.; Bitzel, R.

    1998-12-01

    We display portions of the baseline design concept for the NGST Integrated Science Instrument Module (ISIM). This ISIM design is under ongoing development for integration with the "Yardstick" and other NGST 8 m architectures that are intended for packaging in an EELV or Ariane 5 meter class fairing. The goals of this activity are to: [1] demonstrate mission science feasibility, [2] identify ISIM technology challenge areas, [3] assess ISIM engineering and cost feasibility, [5] identify ISIM/NGST interface constraints, and [6] enable smart customer procurement of the ISIM. In this poster, we display a snap shot of work in progress including: optical design, opto-mechanical layout, thermal modeling, focal plane array design, and electronics design. Ongoing progress can be monitored via ISIM team web site: http://ngst.gsfc.nasa.gov/

  9. 高职院校科技协同创新长效机制新模式--以先进纺织工程技术中心为例%New Model of Long-term Mechanism of Scientific and Technological Synergy Innovation in Higher Vocational School---In Case of Advanced Textile Engineering Technology Center

    Institute of Scientific and Technical Information of China (English)

    马顺彬; 陈志华; 蔡永东

    2015-01-01

    Based on advanced textile engineering technology center,the urgency and feasibility of the development of scientific and technological synergy innovation in higher vocational school were disscussed.The mode of organization and management,the reforma-tion of system and mechanism as well as the system arrangement were summarized.%以先进纺织工程技术中心为例,探讨了高职院校开展科技协同创新的迫切性与可行性,总结了先进纺织工程中心的组织与管理模式,体制机制改革和制度安排。

  10. Exploration of PNF pull technology application in the opera legs flexible training feasibility%探索PNF牵拉技术应用于戏曲腿功柔韧素质训练的可行性

    Institute of Scientific and Technical Information of China (English)

    张秋海; 全明辉

    2012-01-01

      目的:探讨PNF牵拉技术应用于戏曲专业学生腿功柔韧性训练的可行性。方法:选取20名2010级戏曲专业武功班的男生,利用PNF牵拉技术进行柔韧性训练。结果:20名受试的学生,左腿的竖叉、横叉,右腿的竖叉、横叉在训练后都比训练前有了显著的提高,且较之前的训练方法,肌肉疼痛感有明显减轻。结论:PNF牵拉技术可以作为一种很好的训练手段,应用于戏曲专业腿功的柔韧素质训练。%  Objective:To study PNF traction technology applied to drama students flexibility training of leg power feasibility.Methods:a total of 20 grade 2010 drama professional martial arts class of boys, using PNF traction technology for flexible training.Results:20 subjects students, left leg vertical fork, cross fork, the right leg vertical fork, cross fork after the training than before training has been significantly improved, and compared to the previous methods of training, muscle pain have significantly reduced.Conclusion: PNF traction technology can be used as a good training method, applied to the professional opera legs flexible diathesis training.

  11. Usability and Feasibility of an mHealth Intervention for Monitoring and Managing Pain Symptoms in Sickle Cell Disease: The Sickle Cell Disease Mobile Application to Record Symptoms via Technology (SMART).

    Science.gov (United States)

    Jonassaint, Charles R; Shah, Nirmish; Jonassaint, Jude; De Castro, Laura

    2015-01-01

    Patients with sickle cell disease frequently experience severe pain events that lead to unplanned healthcare utilization. Mobile health tools (mHealth) may help prevent these events by providing remote monitoring and self-management support. This article describes the feasibility of the Sickle cell disease Mobile Application to Record symptoms via Technology (SMART), an mHealth app developed to help sickle cell disease patients monitor and manage their day-to-day symptoms. Fifteen patients recorded their pain intensity using a paper visual analog scale (VAS) and then repeated this measurement using an electronic VAS pain measure on SMART. Patients continued using SMART to record clinical symptoms, pain intensity, location and perceived severity, and treatment strategies for at least 28 days. Patient median age was 29 years (range 16-54); 60.0% were male. There was a high intraclass correlation between pain measurements entered on the paper VAS and SMART on the iPhone and the iPad We found a strong association between patient perceived pain severity and pain intensity entries using SMART (b = 1.71; p < 0.01). Daily compliance with SMART entries was a mean 75.0%, with a high of 85.7% in week 1 and low of 57.9% in week 4; however, one-third (n = 5) of the patients were 100.0% compliant even in week 4. Patients who were over age 35 or used an iPad for the study had the highest compliance rates. This study showed that SMART is a useable and feasible method for monitoring daily pain symptoms among adolescents and adults with sickle cell disease-related pain.

  12. Energy Saving Melting and Revert Reduction Technology (E-SMARRT): Mechanical Performance of Dies

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller, Principal Investigator; Kabiri-Bamoradian, Contributors: Khalil; Delgado-Garza, Abelardo; Murugesan, Karthik; Ragab, Adham

    2011-09-13

    As a net shape process, die casting is intrinsically efficient and improvements in energy efficiency are strongly dependent on design and process improvements that reduce scrap rates so that more of the total consumed energy goes into acceptable, usable castings. A casting that is distorted and fails to meet specified dimensional requirements is typically remelted but this still results in a decrease in process yield, lost productivity, and increased energy consumption. This work focuses on developing, and expanding the use of, computer modeling methods that can be used to improve the dimensional accuracy of die castings and produce die designs and machine/die setups that reduce rejection rates due to dimensional issues. A major factor contributing to the dimensional inaccuracy of the casting is the elastic deformations of the die cavity caused by the thermo mechanical loads the dies are subjected to during normal operation. Although thermal and die cavity filling simulation are widely used in the industry, structural modeling of the die, particularly for managing part distortion, is not yet widely practiced. This may be due in part to the need to have a thorough understanding of the physical phenomenon involved in die distortion and the mathematical theory employed in the numerical models to efficiently model the die distortion phenomenon. Therefore, two of the goals of this work are to assist in efforts to expand the use of structural modeling and related technologies in the die casting industry by 1) providing a detailed modeling guideline and tutorial for those interested in developing the necessary skills and capability and 2) by developing simple meta-models that capture the results and experience gained from several years of die distortion research and can be used to predict key distortion phenomena of relevance to a die caster with a minimum of background and without the need for simulations. These objectives were met. A detailed modeling tutorial was

  13. A feasibility assessment of magnetic bearings for free-piston Stirling space power converters

    Energy Technology Data Exchange (ETDEWEB)

    Curwen, P.W.; Rao, D.K.; Wilson, D.S. [Mechanical Technology Inc., Latham, NY (United States)

    1992-06-01

    This report describes work performed by Mechanical Technology Incorporated (MTI) under NASA Contract NAS3-26061, {open_quotes}A Feasibility Assessment of Magnetic Bearings for Free-Piston Stirling Space Engines.{close_quotes} The work was performed over the period from July 1990 through August 1991. The objective of the effort was to assess the feasibility and efficacy of applying magnetic bearings to free-piston Stirling-cycle power conversion machinery of the type currently being evaluated for possible use in future long-term space missions.

  14. Technology.

    Science.gov (United States)

    Online-Offline, 1998

    1998-01-01

    Focuses on technology, on advances in such areas as aeronautics, electronics, physics, the space sciences, as well as computers and the attendant progress in medicine, robotics, and artificial intelligence. Describes educational resources for elementary and middle school students, including Web sites, CD-ROMs and software, videotapes, books,…

  15. Analyzing Neutrophil Morphology, Mechanics, and Motility in Sepsis : Options and Challenges for Novel Bedside Technologies

    NARCIS (Netherlands)

    Zonneveld, Rens; Molema, Grietje; Plötz, Frans B

    Objective: Alterations in neutrophil morphology (size, shape, and composition), mechanics (deformability), and motility (chemotaxis and migration) have been observed during sepsis. We combine summarizing features of neutrophil morphology, mechanics, and motility that change during sepsis with an

  16. Fluid mechanics for mechanical engineering. Technology and examples. 2. ed.; Stroemungslehre fuer den Maschinenbau. Technik und Beispiele

    Energy Technology Data Exchange (ETDEWEB)

    Siekmann, Helmut E.; Thamsen, Paul Uwe [Technische Univ. Berlin (Germany). Fluidsystemtechnik - Stroemungstechnik in Maschinen und Anlagen

    2009-07-01

    Detailed information on turbomachinery; Practical examples as learning aids; Compact presentation with good text and picture quality; Ideal for self-studies and for university teaching. This practically oriented information on the fundamentals of fluid mechanics addresses engineers and students of the engineering sciences, physics, and application-oriented mathematics. The many practical examples are useful for producers and users of the fluid mechanics industry. The text is structured in the same manner as in the 'Grundlagen' volume: Hydrostatics, kinematics, momentum law, Navier-Stokes equation of motion, potential flow, eddy flow, boundary layer flow, turbulent flow. The book closes with information on tube flow, flow around bodies, similarity laws, and numeric flow calculation. This the second, revised and edited edition. (orig.) [German] - Fuer gruendliche Kenntnisse von Stroemungsmaschinen - Praxisbeispiele als Lernhilfen - Kompakte Darstellung in hoher Text- und Bildqualitaet - Ideal zum Selbststudium und fuer die Vorlesung Diese anwendungsbezogene Vertiefung der Themen aus den Grundlagen der Stroemunglehre wendet sich an Ingenieure und Studenten der Ingenieurwissenschaften, Physik und anwendungsorientierten Mathematik. Die zahlreichen Praxisbeispiele sind hilfreich fuer Hersteller und Anwender aus vorwiegend stroemungstechnischer Industrie. Die Einteilung der Kapitel entspricht im Wesentlichen der im Band Grundlagen: Hydrostatik, Kinematik, Impulssatz, NAVIER-STOKES-Bewegungsgleichung, Potential-, Wirbel- und Grenzschichtstroemung sowie turbulente Stroemung. Das Buch schliesst mit Darstellungen ueber Rohrstroemungen, Umstroemung von Koerpern, Aehnlichkeitsgesetzen und numerische Stroemungsberechnung. Die 2. Auflage wurde aktualisiert und korrigiert. (orig.)

  17. Theories and technologies of electronic-electrical-mechanical integrated(EEMI)transmission system

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ EEMI is one of the hot spots in cross-disciplinary research. The research in this topic was to discard the traditional mechanical gear reducer, integrate electrical motor with mechanical load, control the electrical motor by electrical power generated by microelectronics and electrical electronics; namely, form a EEMI transmission system in the mechanical equipments with low rotation rate and large rotation torque.

  18. The technology and mechanism of removal of plastic mulch and land preparation

    Institute of Scientific and Technical Information of China (English)

    ZHANG Huiyou; HOU Shulin; NA Mingjun; YANG Xiaoli; BAI Shengnan

    2007-01-01

    In this article ,the characteristic of the field plastic mulch, the craft for mechanization removal and land preparation of plastic mulch and the mechanism frequently used in the removal and land preparation of plastic mulch were introduced, which offered references for the design of removal mechanism and land preparation of plastic mulch and structural optimization combination of working components.

  19. Benefits of Precision Farming Technologies for Mechanical Weed Control in Soybean and Sugar Beet—Comparison of Precision Hoeing with Conventional Mechanical Weed Control

    Directory of Open Access Journals (Sweden)

    Christoph Kunz

    2015-04-01

    Full Text Available Weed infestations and associated yield losses require effective weed control measures in soybean and sugar beet. Besides chemical weed control, mechanical weeding plays an important role in integrated weed management systems. Field experiments were conducted at three locations for soybean in 2013 and 2014 and at four locations for sugar beet in 2014 to investigate if automatic steering technologies for inter-row weed hoeing using a camera or RTK-GNSS increase weed control efficacy, efficiency and crop yield. Treatments using precision farming technologies were compared with conventional weed control strategies. Weed densities in the experiments ranged from 15 to 154 plants m−2 with Chenopodium album, Polygonum convolvulus, Polygonum aviculare, Matricaria chamomilla and Lamium purpureum being the most abundant species. Weed hoeing using automatic steering technologies reduced weed densities in soybean by 89% and in sugar beet by 87% compared to 85% weed control efficacy in soybean and sugar beet with conventional weeding systems. Speed of weed hoeing could be increased from 4 km h−1 with conventional hoes to 7 and 10 km·h−1, when automatic steering systems were used. Precision hoeing technologies increased soybean yield by 23% and sugar beet yield by 37%. After conventional hoeing and harrowing, soybean yields were increased by 28% and sugar beet yield by 26%.

  20. Melt-compounded composites of ethylene vinyl acetate with magnesium sulfate as flexible EPR dosimeters: Mechanical properties, manufacturing process feasibility and dosimetric characteristics.

    Science.gov (United States)

    Suman, S K; Kadam, R M; Mondal, R K; Murali, S; Dubey, K A; Bhardwaj, Y K; Natarajan, V

    2017-03-01

    Novel polymeric composites for radiation dosimetry were developed. The composites were prepared by solvent-free melt compounding of ethylene vinyl acetate (EVA) (40% vinyl) and magnesium sulfate (MgSO4). Mechanical properties, melt flow characteristics and dosimetric properties were investigated. The composites with up to 50% (wt) of MgSO4 were flexible and capable of flow. The dose response of the EPR signal of the composites was studied in the dose range 3Gy-4kGy and found to be linear between 18Gy and 4kGy. The reproducibility of dose measurements was good. The signal fading rate and the energy dependence of the dose response were found to be acceptable.

  1. Mechanisms of Low-Temperature Nitridation Technology on a TaN Thin Film Resistor for Temperature Sensor Applications.

    Science.gov (United States)

    Chen, Huey-Ru; Chen, Ying-Chung; Chang, Ting-Chang; Chang, Kuan-Chang; Tsai, Tsung-Ming; Chu, Tian-Jian; Shih, Chih-Cheng; Chuang, Nai-Chuan; Wang, Kao-Yuan

    2016-12-01

    In this letter, we propose a novel low-temperature nitridation technology on a tantalum nitride (TaN) thin film resistor (TFR) through supercritical carbon dioxide (SCCO2) treatment for temperature sensor applications. We also found that the sensitivity of temperature of the TaN TFR was improved about 10.2 %, which can be demonstrated from measurement of temperature coefficient of resistance (TCR). In order to understand the mechanism of SCCO2 nitridation on the TaN TFR, the carrier conduction mechanism of the device was analyzed through current fitting. The current conduction mechanism of the TaN TFR changes from hopping to a Schottky emission after the low-temperature SCCO2 nitridation treatment. A model of vacancy passivation in TaN grains with nitrogen and by SCCO2 nitridation treatment is eventually proposed to increase the isolation ability in TaN TFR, which causes the transfer of current conduction mechanisms.

  2. 蒸发冷却空调与风光互补发电结合使用的可行性分析%The feasibility analysis of evaporative air conditioning technology combined with wind-light complementary technology

    Institute of Scientific and Technical Information of China (English)

    申长军; 黄翔; 宋祥龙; 张璐瑶; 董晓杰; 席德科

    2014-01-01

    夏季,为给户外场所降温并节约电能使用,提出利用蒸发冷却空调与风光互补发电相结合的方式。本文分别介绍了这两项技术的发展现状、原理及特点,并通过风洞模拟自然界风力带动风车发电,再与光伏板进行互补发电实验,得出其互补发电功率为166.4W,能够带动一台额定功率为170W的蒸发式冷风扇平稳运转。这两项技术的有效结合是一种绿色、低碳、环保的降温和能源利用方式。%In the summer, to solve the problem of cooling and the problem of its power , put forward using evaporative air conditioning technology and wind-light complementary technology combination of cooling and power supply. This paper introduces the present development situation of these two technologies, the principle and characteristics, Wind fan was driven by wind tunnel to simulation nature windmills and solar panels complementary to generation power by the experiment, it is concluded that the complementary power of 166.4 W will generate a rated power of 170 W ,evaporative cooling fan runs smoothly. Effective combination of these two technologies is a green, low carbon, environmental protection, for cooling and energy utilization way.

  3. Comprehensive understanding of dark count mechanisms of single-photon avalanche diodes fabricated in deep sub-micron CMOS technologies

    Science.gov (United States)

    Xu, Yux; Xiang, Ping; Xie, Xiaopeng

    2017-03-01

    The dark count noise mechanisms of single-photon avalanche diodes (SPADs) fabricated in deep sub-micron (DSM) CMOS technologies are investigated in depth. An electric field dependence of tunneling model combined with carrier thermal generation is established for dark count rate (DCR) prediction. Applying the crucial parameters provided by Geiger mode TCAD simulation such as avalanche triggering probability and electric field distribution in the SPAD avalanche region, the individual contribution of each noise source to DCR is calculated for several SPADs in DSM CMOS technologies. The model calculation results reveal that the trap-assisted tunneling is the main DCR generation source for these DSM CMOS SPADs. With the increase of doping levels in the device avalanche region, the band-to-band tunneling will be the dominant factor that could lead to the higher DCR in scaled DSM CMOS technologies.

  4. Rice transplanting technology of the mechanization%水稻机械化育插秧技术

    Institute of Scientific and Technical Information of China (English)

    邹鲭

    2013-01-01

    The mechanization of rice transplanting technology use the floppy disk cover membrane (non-woven). The semiarid or paddy seedlings and mechanical transplanting rice can improve production efficiency and reduce the labor cost and increase the yield per unit area.%  水稻生产机械化育插秧技术,采用软盘盖膜(无纺布)。半旱式或水田育秧,机械栽插,能提高水稻生产效率,降低劳动成本,提高单产。

  5. The design feasibility of college students entrepreneurship training platform based on cloud technology%基于云技术的大学生创业能力培养平台设计可行性

    Institute of Scientific and Technical Information of China (English)

    陈彩彦

    2015-01-01

    创业教育是指培养具有开创性的个人,目前美国大学不断进行教育创新,逐渐形成了独具特色的创新人才培养模式.本文通过对大学生创业能力培养的现状分析及存在的问题,试着提出一种基于网络共享技术的教学系统构建方案,并对方案的可行性进行了初步的探讨.%Entrepreneurship education is the cultivation of creative individuals, at present, the American University continues to carry out educational innovation, and gradually formed a unique innovative personnel training mode. Based on the analysis of the current situation and problems of the cultivation of College Students' entrepreneurship, this paper tries to put forward a scheme of constructing the teaching system based on network sharing technology, and discusses the feasibility of the scheme.

  6. Feasibility study for international collaboration on photovoltaic power generation and long-distance energy transmission technologies utilizing desert areas environment; Sabaku chiiki wo riyoshita taiyoko hatsuden chokyori yuso gijutsu ni kakawaru kokusai kyoryoku kanosei chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    A workshop was held at Tokyo in March, 1997 on the research and development and feasibility study for international collaboration on photovoltaic (PV) power generation and long-distance energy transmission technologies utilizing desert areas environment. Two speakers from the USA, one from Italy, and two from China were invited, and four speakers in Japan presented papers. A total of 48 persons participated. In the technical sessions, `World energy demand and PV system potential` by Prof. Kurokawa, `Long distance transmission of PV power` by Mr. A. Invenizzi, `Case studies of large scale PV systems distributed throughout desert areas of the world` by Mr. Hirasawa, `Linking renewable energy resources around the world` by Mr. P. Meisen, `Properties of large scale PV plant in the USA` by Mr. J. Benner, `Future prospect of PV electrification in China` by Mr. Kong Li, `Application of large-scale PV systems in deserts in China` by Mr. Isomura, and `Effects of large-scale PV power plant in a climatic desert areas` by Prof. Ihara were presented. 38 refs., 62 figs., 29 tabs.

  7. 鸡西地区采用煤泥烘干技术加工电力燃料的可行性分析%Feasibility Study of Processing Power Fuel With the Slime Oven Drying Technology in Jixi District

    Institute of Scientific and Technical Information of China (English)

    毕明涛

    2011-01-01

    煤炭洗选和火力发电是鸡西煤电基地建设中的两个重要产业项目。当前,在电力燃料紧俏的情况下,如果将滞销的煤炭洗选副产品"煤泥"加工成可用的电力燃料对两个产业均有利。阐述了开发煤泥用作电力燃料的可行性,提出了煤泥烘干技术的工艺方案并做了经济效益分析。%Coal washing and thermal power generation are two key industries in Jixi.Considering the shortage of the electric power fuel,the coal slime which is the by-product of coal washing can be turned into the electrical fuel which is benefit for the development of power generation and electrical fuel production.This paper study the feasibility to develop slime as power fuel and put forward a coal slime drying technological scheme.

  8. Technology

    Directory of Open Access Journals (Sweden)

    Xu Jing

    2016-01-01

    Full Text Available The traditional answer card reading method using OMR (Optical Mark Reader, most commonly, OMR special card special use, less versatile, high cost, aiming at the existing problems proposed a method based on pattern recognition of the answer card identification method. Using the method based on Line Segment Detector to detect the tilt of the image, the existence of tilt image rotation correction, and eventually achieve positioning and detection of answers to the answer sheet .Pattern recognition technology for automatic reading, high accuracy, detect faster

  9. Patient Outcomes as Transformative Mechanisms to Bring Health Information Technology Industry and Research Informatics Closer Together.

    Science.gov (United States)

    Krive, Jacob

    2015-01-01

    Despite the fast pace of recent innovation within the health information technology and research informatics domains, there remains a large gap between research and academia, while interest in translating research innovations into implementations in the patient care settings is lacking. This is due to absence of common outcomes and performance measurement targets, with health information technology industry employing financial and operational measures and academia focusing on patient outcome concerns. The paper introduces methodology for and roadmap to introduction of common objectives as a way to encourage better collaboration between industry and academia using patient outcomes as a composite measure of demonstrated success from health information systems investments. Along the way, the concept of economics of health informatics, or "infonomics," is introduced to define a new way of mapping future technology investments in accordance with projected clinical impact.

  10. Teaching Reform of Course Group Regarding Theory and Design of Mechanisms Based on MATLAB Technology

    Science.gov (United States)

    Shen, Yi; Yuan, Mingxin; Wang, Mingqiang

    2013-01-01

    Considering that the course group regarding theory and design of mechanisms is characterized by strong engineering application background and the students generally feel very boring and tedious during the learning process, some teaching reforms for the theory and design of mechanisms are carried out to improve the teaching effectiveness in this…

  11. Aptamers: A Feasible Technology in Cancer Immunotherapy

    Directory of Open Access Journals (Sweden)

    M. M. Soldevilla

    2016-01-01

    Full Text Available Aptamers are single-chained RNA or DNA oligonucleotides (ODNs with three-dimensional folding structures which allow them to bind to their targets with high specificity. Aptamers normally show affinities comparable to or higher than that of antibodies. They are chemically synthesized and therefore less expensive to manufacture and produce. A variety of aptamers described to date have been shown to be reliable in modulating immune responses against cancer by either blocking or activating immune receptors. Some of them have been conjugated to other molecules to target the immune system and reduce off-target side effects. Despite the success of first-line treatments against cancer, the elevated number of relapsing cases and the tremendous side effects shown by the commonly used agents hinder conventional treatments against cancer. The advantages provided by aptamers could enhance the therapeutic index of a given strategy and therefore enhance the antitumor effect. Here we recapitulate the provided benefits of aptamers with immunomodulatory activity described to date in cancer therapy and the benefits that aptamer-based immunotherapy could provide either alone or combined with first-line treatments in cancer therapy.

  12. Aptamers: A Feasible Technology in Cancer Immunotherapy.

    Science.gov (United States)

    Soldevilla, M M; Villanueva, H; Pastor, F

    2016-01-01

    Aptamers are single-chained RNA or DNA oligonucleotides (ODNs) with three-dimensional folding structures which allow them to bind to their targets with high specificity. Aptamers normally show affinities comparable to or higher than that of antibodies. They are chemically synthesized and therefore less expensive to manufacture and produce. A variety of aptamers described to date have been shown to be reliable in modulating immune responses against cancer by either blocking or activating immune receptors. Some of them have been conjugated to other molecules to target the immune system and reduce off-target side effects. Despite the success of first-line treatments against cancer, the elevated number of relapsing cases and the tremendous side effects shown by the commonly used agents hinder conventional treatments against cancer. The advantages provided by aptamers could enhance the therapeutic index of a given strategy and therefore enhance the antitumor effect. Here we recapitulate the provided benefits of aptamers with immunomodulatory activity described to date in cancer therapy and the benefits that aptamer-based immunotherapy could provide either alone or combined with first-line treatments in cancer therapy.

  13. Quantum communication between remote mechanical resonators

    Science.gov (United States)

    Felicetti, S.; Fedortchenko, S.; Rossi, R.; Ducci, S.; Favero, I.; Coudreau, T.; Milman, P.

    2017-02-01

    Mechanical resonators represent one of the most promising candidates to mediate the interaction between different quantum technologies, bridging the gap between efficient quantum computation and long-distance quantum communication. Here, we introduce an interferometric scheme where the interaction of a mechanical resonator with input-output quantum pulses is controlled by an independent classical drive. We design protocols for state teleportation and direct quantum state transfer, between distant mechanical resonators. The proposed device, feasible with state-of-the-art technology, can serve as a building block for the implementation of long-distance quantum networks of mechanical resonators.

  14. Bringing (Century-Old) Technology into the Classroom. Part I: Teaching Mechanics and Thermodynamics with Antiques

    Science.gov (United States)

    Jewett, John W., Jr.

    2015-01-01

    The notion of bringing technology into the classroom has been the subject of many recent presentations at conferences and papers in physics teaching journals. The use of devices such as laptops, smartphones, tablets, and clickers is rising in today's classrooms and laboratories. PhET simulations have been available online for over a decade. A…

  15. Developing Conceptual Understanding of Mechanical Advantage through the Use of Lego Robotic Technology

    Science.gov (United States)

    Chambers, Joan M.; Carbonaro, Mike; Murray, Hana

    2008-01-01

    Science educators advocate hands on experiences and the use of manipulatives as important for children's conceptual development. Consequently, the utilisation of "Lego" robotic technologies in teaching and learning has become more prevalent in school science classrooms. It is important to investigate their value as educational tools, particularly…

  16. Chemical Genomics and Emerging DNA Technologies in the Identification of Drug Mechanisms and Drug Targets

    DEFF Research Database (Denmark)

    Olsen, Louise Cathrine Braun; Færgeman, Nils J.

    2012-01-01

    critical roles in the genomic age of biological research and drug discovery. In the present review we discuss how simple biological model organisms can be used as screening platforms in combination with emerging genomic technologies to advance the identification of potential drugs and their molecular...

  17. 燃气轮机余热发电技术应用于输气管道的可行性%Application feasibility of gas-turbine waste heat power generation technology in gas pipeline

    Institute of Scientific and Technical Information of China (English)

    张鑫; 吴琼; 李荣光; 赵吉诗; 冯少广; 赵国星; 刘井会; 候宇

    2013-01-01

    A case taken from a compressor station in West-to-East Gas Pipeline is given to investigate the application feasibility of gas-vapor combined cycle power generation technology to improve the thermal efficiency of the generating unit. A field test was made to inspect the content of fuel gas components including the index parameters and calculate the exhaust enthalpy of gas turbine. The generated energy from united cycle generating sets was determined according to the average efficiency of the turbine generator set to demonstrate the feasibility and economy of using the gas-turbine waste heat power generation in electric driven compressor sets. The results showed that the generated energy of entire sets can meet the electricity demand of electric driven compressor sets up to 89.37%, featuring a four-year investment cost recovery period and a remarkable energy-saving effect, considerable long-running economic efficiency, and popularization and application value.%以西气东输某输气站为例,考察利用燃气蒸汽联合循环发电技术提高机组热效率的可行性.现场测试燃料气组分的含量以及各项指标参数,计算燃气轮机排烟热焓.按照汽轮机发电机组的平均效率,确定联合循环发电机组的发电量,论证燃气轮机余热发电用于驱动电驱压缩机组的可行性和经济性.结果表明:整个机组的发电量可以满足电驱压缩机组需求电量的89.37%,4年可回收投资成本,节能效果显著,长期运行经济效益可观,具有推广应用价值.

  18. The Effect of Technological Parameters on the Microstructure and Mechanical Properties of AlSi17Cu4 Alloy

    Directory of Open Access Journals (Sweden)

    Jaroslaw PIĄTKOWSKI

    2016-09-01

    Full Text Available The mechanical properties (HB, HV, R0.2, Rm and plastic properties (A5, Z of AlSi17Cu4 alloy when exposed to chosen technological processes, such as modification, overheating and rapid cooling, are presented in this paper. The best combination of properties was noticed in alloy overheated for 40 minutes at 920 oC and casted into a metallic mould submerged in liquid nitrogen. Moreover, the technological stability and homogeneity of alloys were evaluated based on spread of results, expressed by standard deviation. It was proven, based on microstructure analysis, that the best effect of refinement was achieved by intensive cooling of alloy preceded by its overheating. The XRD analysis indicated that the intermetallic phases, mainly θ(Al2Cu and γ1(Al4Cu9 caused hardening of the solution, improvement in mechanical properties and technological stability.DOI: http://dx.doi.org/10.5755/j01.ms.22.3.8490

  19. Development of Mechanical Sealing and Laser Welding Technology to Instrument Thermocouple for Nuclear Fuel Test Rod

    Energy Technology Data Exchange (ETDEWEB)

    Joung, Chang-Young; Ahn, Sung-Ho; Hong, Jin-Tae; Kim, Ka-Hye; Huh, Sung-Ho [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2015-05-15

    Zircaloy-4 of the nuclear fuel test rod, AISI 316L of the mechanical sealing parts, and the MI (mineral insulated) cable at a thermocouple instrumentation are hetero-metals, and are difficult to weld to dissimilar materials. Therefore, a mechanical sealing method to instrument the thermocouple should be conducted using two kinds of sealing process as follows: One is a mechanical sealing process using Swagelok, which is composed of sealing components that consists of an end-cap, a seal tube, a compression ring and a Swagelok nut. The other is a laser welding process used to join a seal tube, and an MI cable, which are made of the same material. The mechanical sealing process should be sealed up with the mechanical contact compressed by the strength forced between a seal tube and an end-cap, and the laser welding process should be conducted to have no defects on the sealing area between a seal tube and an MI cable. Therefore, the mechanical sealing and laser welding techniques need to be developed to accurately measure the centerline temperature of the nuclear fuel test rod in an experimental reactor. The mechanical sealing and laser welding tests were conducted to develop the thermocouple instrumentation techniques for the nuclear fuel test rod. The optimum torque value of a Swagelok nut to seal the mechanical sealing part between the end-cap and seal tube was established through various torque tests using a torque wrench. The optimum laser welding conditions to seal the welding part between a seal tube and an MI cable were obtained through various welding tests using a laser welding system.

  20. 14-plex Feasibility Report

    Energy Technology Data Exchange (ETDEWEB)

    Kotongan, Victoria Hazel [Native Village of Unalakleet

    2013-06-21

    The Native Village of Unalakleet project was a feasibility study for a retrofit of a “tribally owned” three story, 14 apartment complex located in Unalakleet, Alaska. The program objective and overall goal was to create a plan for retrofitting to include current appraised value and comparable costs of new construction to determine genuine feasibility as low-income multi-family housing for tribal members.

  1. Motivation Mechanism Prevents Adverse Selection in Industrial Technology Innovation Strategic Alliance

    Directory of Open Access Journals (Sweden)

    Mingxia Zhao

    2014-01-01

    Full Text Available Choosing proper partners is the key to the success of the alliance. Based on the analysis of the characters of the Industrial Technology Innovation Strategic Alliance, a new kind of cooperative organization occurred in China in recent years. The problem of “adverse selection” at the stage of the its establishment is discussed in this paper. The game model is built based on motivation theory and the principle-agent theory and then proved by examples. The conclusions can be got from the model. By setting the ranges of funds, preferential policy, and sharable profits and designing membership rules, the organizer of the Industrial Technology Innovation Strategic Alliance can motivate the risk neutral applicant to reveal his real capacity and the one with higher capacity to participate intothe alliance more actively and even can set capacity threshold for applicants implicitly.

  2. Bringing (Century-Old) Technology into the Classroom, Part I: Teaching Mechanics and Thermodynamics with Antiques

    Science.gov (United States)

    Jewett, John W.

    2015-10-01

    The notion of bringing technology into the classroom has been the subject of many recent presentations at conferences and papers in physics teaching journals. The use of devices such as laptops, smartphones, tablets, and clickers is rising in today's classrooms and laboratories. PhET simulations have been available online for over a decade. A column in The Physics Teacher, called "iPhysicsLabs," was begun in February of 2012 and describes experiments to be carried out with smartphones and tablets. Students have become familiar with the operation and application of such technology. But are they aware of the underlying physics necessary to make the devices and the online simulations work? Much of the physics is hidden at the microscopic level in tiny circuit chips or in the workings of a distant server.

  3. Efficacy and Mechanisms of Murine Norovirus Inhibition by Pulsed-Light Technology

    OpenAIRE

    Vimont, Allison; Fliss, Ismaïl; Jean, Julie

    2015-01-01

    Pulsed light is a nonthermal processing technology recognized by the FDA for killing microorganisms on food surfaces, with cumulative fluences up to 12 J cm−2. In this study, we investigated its efficacy for inactivating murine norovirus 1 (MNV-1) as a human norovirus surrogate in phosphate-buffered saline, hard water, mineral water, turbid water, and sewage treatment effluent and on food contact surfaces, including high-density polyethylene, polyvinyl chloride, and stainless steel, free or i...

  4. Physical Mechanism and Fundamental Performance Limits on Graphene Non-Volatile Memory Technologies

    OpenAIRE

    Song, Emil Beom

    2012-01-01

    Non–volatile memory (NVM) constitutes a vital portion in electronics to retain information for both archiving and data processing. Limitations encountered in flash technology upon increasing density and reducing cost by scaling necessitates alternative memory structures beyond complementary–metal–oxide–semiconductor (CMOS). The single atomic two–dimensional profile and the superior physical properties of graphene allow advancements in a variety of memory metrics ...

  5. Adaptive Opportunistic Cooperative Control Mechanism Based on Combination Forecasting and Multilevel Sensing Technology of Sensors for Mobile Internet of Things

    Directory of Open Access Journals (Sweden)

    Yong Jin

    2014-01-01

    Full Text Available In mobile Internet of Things, there are many challenges, including sensing technology of sensors, how and when to join cooperative transmission, and how to select the cooperative sensors. To address these problems, we studied the combination forecasting based on the multilevel sensing technology of sensors, building upon which we proposed the adaptive opportunistic cooperative control mechanism based on the threshold values such as activity probability, distance, transmitting power, and number of relay sensors, in consideration of signal to noise ratio and outage probability. More importantly, the relay sensors would do self-test real time in order to judge whether to join the cooperative transmission, for maintaining the optimal cooperative transmission state with high performance. The mathematical analyses results show that the proposed adaptive opportunistic cooperative control approach could perform better in terms of throughput ratio, packet error rate and delay, and energy efficiency, compared with the direct transmission and opportunistic cooperative approaches.

  6. Development and Prospect of Installation Technology of Electrical and Mechanical Equipment in Hydropower Construction

    Institute of Scientific and Technical Information of China (English)

    Fu Yuanchu

    2005-01-01

    The hydropower installed capacity in China exceeded 100 GW by the end of 2004. With the develop-ment of hydropower construction cause, the contingents of electrical and mechanical installation also grew steadily.The installation and debugging techniques made great strides in aspects of different conventional hydrogeneratorsets, reversible pumped-storage units and their rotor spiders, runners, bearings, penstocks as well as controlequipment, such as computerized governors, intelligent monitoring devices. Major technical innovations werebrought about in the electrical and mechanical installation. For an arduous task to construct hydropower projectsof over 50 GW confronts hydropower installation enterprises at the beginning of 21 st century, the installationtechnologies will certainly develop around the projects.

  7. Pulsed quantum interaction between two distant mechanical oscillators

    Science.gov (United States)

    Vostrosablin, Nikita; Rakhubovsky, Andrey A.; Filip, Radim

    2016-12-01

    Feasible setup for pulsed quantum nondemolition interaction between two distant mechanical oscillators through an optical or microwave mediator is proposed. The proposal uses homodyne measurement of the mediator and feedforward control of the mechanical oscillators to reach the interaction. To verify the quantum nature of the interaction, we investigate the Gaussian entanglement generated in the mechanical modes. We evaluate it under influence of mechanical bath and propagation loss for the mediator and propose ways to optimize the interaction. Finally, both currently available optomechanical and electromechanical platforms are numerically analyzed. The analysis shows that implementation is already feasible with current technology.

  8. Nuclear Technology. Course 30: Mechanical Inspection. Module 30-4, Piping Inspection.

    Science.gov (United States)

    Kinne, Bruce

    This fourth in a series of eight modules for a course titled Mechanical Inspection describes the classifications of pipe and fittings, the types of connections used in the installation of piping systems, the typical marking schemes, the preinstallation and installation verifications, and the tests of the completed installation. The module follows…

  9. Mechanism and Preventive Technology of the Thaumasite Form of Sulfate Attack on Cement Mortars

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The deterioration mechanism of thaumasite towards cement or concrete structure and the deterioration pattern of in-situ construction caused by the formation of thaumasite were studied in this paper. To improve the TSA (the thaumasite form of sulfate attack) resistance, the cement type, water to cement ratios, the mineral admixture and the circumstance factors should be taken into consideration.

  10. Nuclear Technology. Course 30: Mechanical Inspection. Module 30-7, Pressure Vessel Inspection.

    Science.gov (United States)

    Kupiec, Chet; Espy, John

    This seventh in a series of eight modules for a course titled Mechanical Inspection is devoted to the design and fabrication of the reactor pressure vessel. The module follows a typical format that includes the following sections: (1) introduction, (2) module prerequisites, (3) objectives, (4) notes to instructor/student, (5) subject matter, (6)…

  11. Nuclear Technology. Course 30: Mechanical Inspection. Module 30-3, Valve Inspection.

    Science.gov (United States)

    Wasil, Ed; Espy, John

    This third in a series of eight modules for a course titled Mechanical Inspection describes all the major types of valves utilized in a nuclear power plant and the purposes of the preinstallation and installation inspections; also describes the valve testing required for particular valves. The module follows a typical format that includes the…

  12. Nuclear Technology. Course 30: Mechanical Inspection. Module 30-5, Surface Cleaning Inspection.

    Science.gov (United States)

    Wasel, Ed; Espy, John

    This fifth in a series of eight modules for a course titled Mechanical Inspection describes cleaning activities which typically apply to construction, maintenance, and modification activities at the nuclear power plant site. The module follows a typical format that includes the following sections: (1) introduction, (2) module prerequisites, (3)…

  13. Nuclear Technology. Course 30: Mechanical Inspection. Module 30-2, Pump Functional Testing.

    Science.gov (United States)

    Wasel, Ed; Espy, John

    This second in a series of eight modules for a course titled Mechanical Inspection describes typical pump functional tests which are performed after pump installation and prior to release of the plant for unrestricted power operation. The module follows a typical format that includes the following sections: (1) introduction, (2) module…

  14. Nuclear Technology. Course 27: Metrology. Module 27-3, Gage Blocks, Mechanical Comparators and Electronic Comparators.

    Science.gov (United States)

    Selleck, Ben; Espy, John

    This third in a series of eight modules for a course titled Metrology describes gage blocks and mechanical and electronic comparators. The module follows a typical format that includes the following sections: (1) introduction, (2) module prerequisites, (3) objectives, (4) notes to instructor/student, (5) subject matter, (6) materials needed, (7)…

  15. The mechanics of bacterial cluster formation on plant leaf surfaces as revealed by bioreporter technology.

    Science.gov (United States)

    Tecon, Robin; Leveau, Johan H J

    2012-05-01

    Bacteria that colonize the leaves of terrestrial plants often occur in clusters whose size varies from a few to thousands of cells. For the formation of such bacterial clusters, two non-mutually exclusive but very different mechanisms may be proposed: aggregation of multiple cells or clonal reproduction of a single cell. Here we assessed the contribution of both mechanisms on the leaves of bean plants that were colonized by the bacterium Pantoea agglomerans. In one approach, we used a mixture of green and red fluorescent P. agglomerans cells to populate bean leaves. We observed that this resulted in clusters made up of only one colour as well as two-colour clusters, thus providing evidence for both mechanisms. Another P. agglomerans bioreporter, designed to quantify the reproductive success of bacterial colonizers by proxy to the rate at which green fluorescent protein is diluted from dividing cells, revealed that during the first hours on the leaf surface, many bacteria were dividing, but not staying together and forming clusters, which is suggestive of bacterial relocation. Together, these findings support a dynamic model of leaf surface colonization, where both aggregative and reproductive mechanisms take place. The bioreporter-based approach we employed here should be broadly applicable towards a more quantitative and mechanistic understanding of bacterial colonization of surfaces in general. © 2012 Society for Applied Microbiology and Blackwell Publishing Ltd.

  16. The mechanics of bacterial cluster formation on plant leaf surfaces as revealed by bioreporter technology

    NARCIS (Netherlands)

    Tecon, R.; Leveau, J.H.J.

    2012-01-01

    Bacteria that colonize the leaves of terrestrial plants often occur in clusters whose size varies from a few to thousands of cells. For the formation of such bacterial clusters, two non-mutually exclusive but very different mechanisms may be proposed: aggregation of multiple cells or clonal

  17. Neural Network Identification Model for Technology Selection of Fully-Mechanized Top-Coal Caving Mining

    Institute of Scientific and Technical Information of China (English)

    孟宪锐; 徐永勇; 汪进

    2001-01-01

    This paper mainly discusses the selection of the technical parameters of fully-mechanized top-coal caving mining using the neural network technique. The comparison between computing results and experiment data shows that the set-up neural network model has high accuracy and decision-making benefit.

  18. Effects of Technological Parameters on the Mechanical Performances of SAC-cementitious Materials

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A new type of SAC-cementitious material was manufactured by taking sulphoaluminate cement(SAC) as the basic material, polyvinyl alcohol(PVA) as the organic polymer and adding coupling agent(KH). Its flexural strength can reach 165 MPa, the compressive strength can be larger than 267 MPa.A set of fitable technological parameters of the material were gained through experiments. In addition, the flexural strength and toughness can be improved greatly by adding KH, whose values can be increased by 49.76% and 14.55%, respectively.

  19. Planning of designing and installation of mechanical elements at the gear speed reducer on the basis of the parameter technology

    Directory of Open Access Journals (Sweden)

    D. Letić

    2013-01-01

    Full Text Available The development and implementation of the computer methods at project managing in the part of the planning of designing and installation of mechanical elements with the fit (assembly block of the gear speed reducer is significant and at present irreplaceable engineering task if it has been realized by the modern parameter technology. There are multifunction uses of this organized group of activities, beginning from the quick changeability of elements still in the phase of designing and constructing, thanks to the characteristics of their associativity, still to the wide basis of standard elements that are incorporated in the very program package. Meanwhile, these activities are not simple, so their realization has to be planned from the stand - point of time, resource and cost of realization. For the very designing and constructing was used AutoCAD Mechanical, and for the design managing Microsoft Project.

  20. The influence of lubricant carrier and lubrication conditions on mechanical-technological properties of high carbon steel wires

    Directory of Open Access Journals (Sweden)

    M. Suliga

    2016-10-01

    Full Text Available In this paper the effect of the type of soap powder and lubricant carriers on lubrication conditions in multipass drawing process of high carbon steel wires has been determined. The wire drawing process was conducted in industrial conditions by means of a modern multi-die Koch drawing machine. For wires drawn on borax and phosphate lubricant carriers the mechanical-technological properties have been carried out, in which yield stress, tensile strength, uniform elongation, number of twists and number of bends were assessed. It has been proved that the application of phosphate lubricant carrier and also the rotary die in the first draft in an essential way improve the lubrication condition in high speed multipass drawing process and makes it possible to refine the mechanical properties of wires.

  1. Borehole camera technology for measuring the relaxation zone of surrounding rock: mechanism and application

    Energy Technology Data Exchange (ETDEWEB)

    Jing Hong-wen; Li Yuan-hai; Liang Jun-qi; Yu De-cheng [China University of Mining & Technology, Xuzhou (China). State Key Laboratory for Geomechanics & Deep Underground Engineering

    2009-05-15

    A panoramic borehole camera technology (BCT) and digital image processing method was developed by constructing a system composed of hardware and software. The technology was used for measuring the relaxation zone of surrounding rock with the borehole camera. The hardware consists of a mini CCD camera and a high-pressure sealed magnetic compass that is used for camera positioning. The software includes real-time image monitoring and a processing program that includes the procedure for analysis of the relaxation zone. The roundness of cracks in the boreholes is taken as the index for identifying the relaxation zone. The system was used to measure the relaxation zone of a deep roadway in the Qiwu coal mine of Shandong province. The distribution of the relaxation zone around the roadway was obtained. The results show that the thickness of the broken rock zone varies with the measuring position within a cross section of the roadway. The reliability of the measuring method was tested and verified by comparing the data from BCT with those measured by an ultrasonic method; the difference is less than 3.5%. The system provides a new method for the measurement of the relaxation zone when engineering deep underground. 6 refs., 11 figs., 2 tabs.

  2. Mechanical and thermal property characterization of poly-L-lactide (PLLA) scaffold developed using pressure-controllable green foaming technology

    Energy Technology Data Exchange (ETDEWEB)

    Sheng, Shen-Jun [Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023 (China); School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023 (China); Hu, Xiao [Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028 (United States); Department of Biomedical and Translational Sciences, Rowan University, Glassboro, NJ 08028 (United States); Wang, Fang, E-mail: wangfang@njnu.edu.cn [Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023 (China); Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028 (United States); Ma, Qing-Yu [Key Laboratory of Optoelectronics of Jiangsu Province, School of Physics and Technology, Nanjing Normal University, Nanjing 210023 (China); Gu, Min-Fen [Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023 (China)

    2015-04-01

    Poly-L-lactide (PLLA) is one of the most promising biological materials used for tissue engineering scaffolds (TES) because of their excellent biodegradability and tenability. Here, microcellular PLLA foams were fabricated by pressure-controllable green foaming technology. Scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), wide angle X-ray diffraction measurement (WAXRD), thermogravimetric (TG) analysis, reflection-Fourier transform infrared (FTIR) analysis, enzymatic degradation study and MTT assay were used to analyze the scaffolds' morphologies, structures and crystallinities, mechanical and biodegradation properties, as well as their cytotoxicity. The results showed that PLLA foams with pore sizes from 8 to 103 μm diameters were produced when the saturation pressure decreased from 7.0 to 4.0 MPa. Through a combination of StepScan DSC (SSDSC) and WAXRD approaches, it was observed in PLLA foams that the crystallinity, highly-oriented metastable state and rigid amorphous phase increased with the increasing foaming pressure. It was also found that both the glass transition temperature and apparent enthalpy of PLLA significantly increased after the foaming process, which suggested that the changes of microcellular structure could provide PLLA scaffolds better thermal stability and elasticity. Moreover, MTT assessments suggested that the smaller pore size should benefit cell attachment and growth in the scaffold. The results of current work will give us better understanding of the mechanisms involved in structure and property changes of PLLA at the molecular level, which enables more possibilities for the design of PLLA scaffold to satisfy various requirements in biomedical and green chemical applications. - Highlights: • Pressure-controllable green foaming technology is used. • The crystallinity and rigid amorphous fraction is calculated by using DSC and XRD. • We examine the changes of

  3. Feasible mathematics II

    CERN Document Server

    Remmel, Jeffrey

    1995-01-01

    Perspicuity is part of proof. If the process by means of which I get a result were not surveyable, I might indeed make a note that this number is what comes out - but what fact is this supposed to confirm for me? I don't know 'what is supposed to come out' . . . . 1 -L. Wittgenstein A feasible computation uses small resources on an abstract computa­ tion device, such as a 'lUring machine or boolean circuit. Feasible math­ ematics concerns the study of feasible computations, using combinatorics and logic, as well as the study of feasibly presented mathematical structures such as groups, algebras, and so on. This volume contains contributions to feasible mathematics in three areas: computational complexity theory, proof theory and algebra, with substantial overlap between different fields. In computational complexity theory, the polynomial time hierarchy is characterized without the introduction of runtime bounds by the closure of certain initial functions under safe composition, predicative recursion on nota...

  4. Development of the RIOT Web Service and Information Technologies to Enable Mechanism Reduction for HCCI Simulations

    Energy Technology Data Exchange (ETDEWEB)

    Schuchardt, K; Oluwole, O; Pitz, W J; Rahn, L; Green, W H; Leahy, D; Pancerella, C; Sj?berg, M; Dec, J

    2005-06-13

    New approaches are being explored to facilitate multidisciplinary collaborative research of Homogeneous Charge Compression Ignition (HCCI) combustion processes. In this paper, collaborative sharing of the Range Identification and Optimization Toolkit (RIOT) and related data and models is discussed. RIOT is a developmental approach to reduce the computational of detailed chemical kinetic mechanisms, enabling their use in modeling kinetically controlled combustion applications such as HCCI. These approaches are being developed and piloted as a part of the Collaboratory for Multiscale Chemical Sciences (CMCS) project. The capabilities of the RIOT code are shared through a portlet in the CMCS portal that allows easy specification and processing of RIOT inputs, remote execution of RIOT, tracking of data pedigree, and translation of RIOT outputs to a table view and to a commonly-used mechanism format.

  5. Technology and mechanism of a new protein-based core sand for aluminum casting

    Institute of Scientific and Technical Information of China (English)

    石晶玉; 黄天佑; 石红玉; 何镇明

    2001-01-01

    The protein-based binding material is from natural products, which is nontoxic and recyclable. This kind of green binder is earnestly needed by aluminum casting products. The new protein-based core possesses higher strength and easier shakeout. Its tensile strength is close to that of common resin sands. The micro-mechanism of protein binder was investigated by using infrared spectrum, chemical element analysis, SEM and thermal lost-mass analysis.

  6. Student collaboration, investigation problems, and technology use in an innovative university mechanics class

    Science.gov (United States)

    Kuech, Robert K.

    This study investigated the learning of a selected group of students within a calculus based, university physics course organized to incorporate strategies of effective learning and instruction including: collaborative grouping, authentic investigations, and easy access to technology tools. More than half the students' class time was spent engaged in the investigations with less than one-quarter of the time in lecture. A complementary study has shown that students had high conceptual gains during the course and this study reports similar gains for students in the selected group. This research examined student interactions during group investigations and the roles that may have been played by the problem types, the computer tools, and the behaviors of other students and instructors on conceptual learning. Data were collected from video tapes throughout all sessions of the class while the students worked together on the investigations. Field notes, pre and post-test data, and investigation reports provided contextual and assessment information. A detailed descriptive study was conducted and grounded theory guided the research methodology throughout the study. The research analyses focused especially on student-student student instructor; student-technology and student-problem interactions. Within these interactions the students in the group were observed to engage in important cognitive processes including: recall of previous knowledge that promoted familiarity, reflection on data and hypotheses that promoted intersubjectivity, and elaboration that promoted questioning. These processes appeared to be linked to modifications in the students' conceptual understanding. The instructors generally intended to act as facilitators and helped to guide the students through the investigations. Technology may have provided a means for the students to critically reflect on data collected or test and retest hypotheses, either by ``real time'' plotting of data or the rapid

  7. Nondestructive Methods to Characterize Rock Mechanical Properties at Low-Temperature: Applications for Asteroid Capture Technologies

    Science.gov (United States)

    Savage, Kara A.

    Recent government initiatives and commercial activities have targeted asteroids for in situ material characterization, manipulation, and possible resource extraction. Most of these activities and missions have proposed significant robotic components, given the risks and costs associated with manned missions. To successfully execute these robotic activities, detailed mechanical characteristics of the target space bodies must be known prior to contact, in order to appropriately plan and direct the autonomous robotic protocols. Unfortunately, current estimates of asteroid mechanical properties are based on limited direct information, and significant uncertainty remains specifically concerning internal structures, strengths, and elastic properties of asteroids. One proposed method to elucidate this information is through in situ, nondestructive testing of asteroid material immediately after contact, but prior to any manipulation or resource extraction activities. While numerous nondestructive rock characterization techniques have been widely deployed for terrestrial applications, these methods must be adapted to account for unique properties of asteroid material and environmental conditions of space. For example, asteroid surface temperatures may range from -100°C to 30°C due to diurnal cycling, and these low temperatures are especially noteworthy due to their deleterious influence on non-destructive testing. As a result, this thesis investigates the effect of low temperature on the mechanical characteristics and nondestructive technique responses of rock material. Initially, a novel method to produce low temperature rock samples was developed. Dry ice and methanol cooling baths of specific formulations were used to decrease rock to temperatures ranging from -60°C to 0°C. At these temperatures, shale, chalk, and limestone rock samples were exposed to several nondestructive and conventional mechanical tests, including Schmidt hammer, ultrasonic pulse velocity, point

  8. Modeling of temporomandibular joint function using MRI and jaw-tracking technologies--mechanics.

    Science.gov (United States)

    Gallo, Luigi M

    2005-01-01

    The study of mechanics of the temporomandibular joint (TMJ) is important because its dysfunction and breakdown could be, at least partially, of mechanical origin. The incongruity of the articular surfaces of the TMJ is compensated by a fibrocartilaginous articular disc. Its dislocation and failure seem to be closely related to the development of osteoarthritis of the TMJ. The analysis of mandibular kinematics permits the detection and assessment of irregularities of TMJ function due to internal obstacles such as a displaced articular disc. Furthermore, the measurement of the dynamic relationship between the articular surfaces of the TMJ is useful to determine the strains undergone by the disc that if too high might compromise its integrity. The development of our research in TMJ mechanics has evolved from the acquisition of the traces of single mandibular points to an accurate and compact description of mandibular motion, in which the mechanical advantage of jaw muscles, and forces and torques acting on the jaw are considered as well. The combination of three-dimensional software models of TMJ anatomies obtained from MRI and jaw tracking with six degrees of freedom permits a subject-specific dynamic analysis of the intra-articular space, providing insight into individual disc deformation during function and TMJ loading. Studies performed with this system indicate that both TMJs are loaded during chewing, the balancing more so than the working joint. In fact, during chewing, the intra-articular distance is smaller for hard than for soft food, on closing than on opening, on the balancing than on the working side. This last finding is confirmed by static biting experiments, in which the condyle-fossa distance decreases more on the side contralateral to the bite force, depending on its magnitude. Also studies on the dynamics of compression areas indicate that plowing can occur through the disc during function, especially mediolaterally, due to stress field translation

  9. Densification mechanism of chemical vapor infiltration technology for carbon/carbon composites

    Institute of Scientific and Technical Information of China (English)

    CHEN Jian-xun; XIONG Xiang; HUANG Qi-zhong; YI Mao-zhong; HUANG Bai-yun

    2007-01-01

    Carbon/carbon composites were fabricated using pressure-gradient chemical vapor infiltration(CVI) technology with propane (C3H6) as the carbon precursor gas and nitrogen (N2) as the carrier gas. The chemical process of deposition of pyrolytic carbon was deduced by analyzing the component of molecules in gas phase and observing the microstructure of deposition carbon. The results show that the process of deposition starts from the breakdown of C-C single bond of propene (C3H6), and forms two kinds of active groups in the heterogeneous gas phase reaction. Afterwards, these active groups form many stable bigger molecules and deposit on carbon fiber surface. At the same time, hydrogen atoms of the bigger molecules absorbed on carbon fiber surface are eliminated and the solid pyrolytic carbon matrix is formed in the heterogeneous reaction process.

  10. 第三代测序基本原理%The Mechanisms of the Third Generation Sequencing Technology

    Institute of Scientific and Technical Information of China (English)

    李明爽; 赵敏

    2012-01-01

    In this review, I describe the mechanisms and features of the third generation sequencing technology which is a new generation of single molecule sequencing technology, introduce the True Single Molecule Sequencing (tSMS? of Helicos, the Single Molecule Real Time (SMRT? DNA Sequencing of the Pacific Bioseience, and the single-molecule nanopore DNA sequencing of the Oxford Nanopore Technologies. The advantages compared with the second generation sequencing, the problems and its future perspectives will be discussed here.%文章阐述了以单分子实时测序和纳米孔技术为标志第三代测序的基本原理,介绍了Helicos的Heliscope单分子测序仪、Pacific Bioscience的SMRT技术和Oxford Nanopore Technologies公司正在研究的纳米孔单分子测序技术.与其他测序技术进行了简单的对比以并提出一些单分子测序仍需面对的问题以及对未来单分子测序的展望.

  11. 机械设备技改方法及分析%Technological transformation and analysis of mechanical equipment

    Institute of Scientific and Technical Information of China (English)

    陈奇峰

    2015-01-01

    Along with the continuous development of China's economy, the continuous improvement of the level of science and technology,various enterprises under the impact of the new situation,facing both great opportunities are also faced with severe challenges.Under the condition of market economy,the competition between enterprises increasingly deepened,facing the diversified demands of the market and high-end manufacturing technology, the enterprise for the number of mechanical equipment and technical renovation of equipment is an important task.An important aspect of improving the enterprise competitiveness is to improve the technological transformation of the equipment and increase the technical content of the equipment.This paper mainly expounds the contents of technological transformation of the mechanical equipment in China, and the evaluation and analysis of the technical innovation method, which is of great significance for improving the technological transformation of machinery and equipment.%随着我国经济的不断发展,科学技术水平的不断提高,各个企业在这种新形势的冲击下,既面临着重大的机遇同时也面临着严峻的挑战.市场经济条件下,企业之间的竞争日益加深,面对多样化的市场需求和高端的制造技术,企业对于机械设备数量和设备技改是一项重要的任务.提高企业竞争力的一个重要方面就是提高设备的技术改造,增加设备的技术含量.本文主要阐述了目前我国机械设备的技术改造的内容,并对设备技改方法进行了评价和分析,对提高机械设备技改有着重要的参考意义.

  12. Technology Development of Automated Rendezvous and Docking/Capture Sensors and Docking Mechanism for the Asteroid Redirect Crewed Mission

    Science.gov (United States)

    Hinkel, Heather; Strube, Matthew; Zipay, John J.; Cryan, Scott

    2016-01-01

    This paper will describe the technology development efforts NASA has underway for Automated Rendezvous and Docking/Capture (AR&D/C) sensors and a docking mechanism and the challenges involved. The paper will additionally address how these technologies will be extended to other missions requiring AR&D/C whether robotic or manned. NASA needs AR&D/C sensors for both the robotic and crewed segments of the Asteroid Redirect Mission (ARM). NASA recently conducted a commonality assessment of the concept of operations for the robotic Asteroid Redirect Vehicle (ARV) and the crewed mission segment using the Orion spacecraft. The commonality assessment also considered several future exploration and science missions requiring an AR&D/C capability. Missions considered were asteroid sample return, satellite servicing, and planetary entry, descent, and landing. This assessment determined that a common sensor suite consisting of one or more visible wavelength cameras, a three-dimensional LIDAR along with long-wavelength infrared cameras for robustness and situational awareness could be used on each mission to eliminate the cost of multiple sensor developments and qualifications. By choosing sensor parameters at build-time instead of at design-time and, without having to requalify flight hardware, a specific mission can design overlapping bearing, range, relative attitude, and position measurement availability to suit their mission requirements with minimal non-recurring engineering costs. The resulting common sensor specification provides the union of all performance requirements for each mission and represents an improvement over the current systems used for AR&D/C today. These sensor specifications are tightly coupled to the docking system capabilities and requirements for final docking conditions. The paper will describe NASA's efforts to develop a standard docking system for use across NASA human spaceflight missions to multiple destinations. It will describe the current

  13. 绿茶饮料沉淀机制及澄清技术%Progress of precipitation mechanism and clarifying technology of green tea beverage

    Institute of Scientific and Technical Information of China (English)

    马梦君; 罗理勇; 曾亮

    2015-01-01

    Keeping the color and aroma, and preventing it from deposit are the key issues of green tea beverage process to be resolved. The precipitation phenomenon of green tea beverage is one of the important factors restricting the development of its marketing. Green tea beverage would lose its stability and could not keep clear and transparent because of tea cream formation. It is necessary to prevent the forming of tea cream or eliminate tea cream during green tea beverage processing. Based on the main chemical components (tea polyphenols, protein, caffeine and metal ion) participated in tea cream, this review discussed the mechanism of polyphenols and protein, polyphenols and caffeine, and polyphenols and metal ion. What’s more, it made a comprehensive overview about the clarifying technology of green tea beverage from physical, chemical and biological aspects, and proposed feasible techniques on the basis of precipitation mechanism.%绿茶饮料的加工技术中仍存在保色、保香和防沉淀等关键问题有待解决,其中沉淀现象是目前制约绿茶市场发展的重要因素之一。由于冷后浑的形成,茶汤性状不稳定,不能保持清澈透明的饮料特征,或在储藏过程中会逐渐形成沉淀;在茶饮料生产过程中,需采用各种方法去除冷后浑或阻止冷后浑的形成,以保障产品的澄清透彻。本文从参与绿茶饮料沉淀的主要生化因子(茶多酚、蛋白质、咖啡碱、金属离子)出发,深入探讨了茶多酚与蛋白质、茶多酚与咖啡碱、茶多酚与金属离子之间的络合机制;从物理法、化学法和生物法三个方面综合概述了绿茶饮料当前主要采用的澄清技术,并根据沉淀机制对绿茶饮料可行的澄清技术提出展望。

  14. Fracture mechanics analysis on Smart-Cut technology. Part 2: Effect of bonding flaws

    Institute of Scientific and Technical Information of China (English)

    Bin Gu; Hongyuan Liu; Yiu-Wing Mai; Xi Qiao Feng; Shou Wen Yu

    2009-01-01

    In Part 2 of the paper on the Smart-Cut process,the effects of bonding flaws characterized by the size and internal pressure before and after splitting are studied by using fracture mechanics models. It is found that the bonding flaws with large size are prone to cause severe deviation of defect growth, leading to a non-transferred area of thin layer when splitting. In a practical Smart-Cut process where the internal pressure of bonding flaws is very small,large interfacial defects always promote defect growth in the splitting process. Meanwhile, increasing the internal pressure of the bonding flaws decreases the defect growth and its deviation before splitting. The mechanism of relaxation of stiffener constraint is proposed to clarify the effect of bonding flaws. Moreover, the progress of the splitting process is analyzed when bonding flaws are present. After splitting,those bonding flaws with large size and high internal pressure are vulnerable for the blistering of the thin film during high-temperature annealing.

  15. The adjusting mining technology of combining fully mechanized with individual prop, rotating, hilt, irregular form, and double unit face on thin coal seam of Tianchen Mine

    Institute of Scientific and Technical Information of China (English)

    SONG Hua-ling; WEN Guo-feng; LI Jin-ke

    2008-01-01

    Analyzed the situations and characteristics of thin coal seam mining and its mining technologies, and introduced the mining innovation technology used by Tianchen Coal Mine of Zhaozhuang Coal Company of China. This innovation technology combined the fully mechanized mining with individual props, and the working face of mining is over length, irregular form and double units. The rotational adjusting mining technology on thin coal seam is also practiced in this new mining technology. The detail technologies, such as outlays of working face and ways, mining methods, equipments of cutting, transporting and sporting, have been introduced. So that, using the synthetic and creative mining tech-nologies, Tianchen Coal Mine solves the mining problems of thin coal seam successfully.

  16. Development of the RIOT web service and information technologies to enable mechanism reduction for HCCI simulations

    Science.gov (United States)

    Schuchardt, Karen; Oluwole, Oluwayemisi; Pitz, William; Rahn, Larry A.; Green, William H., Jr.; Leahy, David; Pancerella, Carmen; Sjöberg, Magnus; Dec, John

    2005-01-01

    New approaches are being explored to facilitate multidisciplinary collaborative research of Homogenous Charge Compression Ignition (HCCI) combustion processes. In this paper, collaborative sharing of the Range Identification and Optimization Toolkit (RIOT) and related data and models is discussed. RIOT is a developmental approach to reduce the computational complexity of detailed chemical kinetic mechanisms, enabling their use in modeling kinetically controlled combustion applications such as HCCI. These approaches are being developed and piloted as a part of the Collaboratory for Multiscale Chemical Sciences (CMCS) project. The capabilities of the RIOT code are shared through a portlet in the CMCS portal that allows easy specification and processing of RIOT inputs, remote execution of RIOT, tracking of data pedigree, and translation of RIOT outputs to a table view and to a commonly-used chemical model format.

  17. Development and Testing of Mechanism Technology for Space Exploration in Extreme Environments

    Science.gov (United States)

    Tyler, Tony R.; Levanas, Greg; Mojarradi, Mohammad M.; Abel, Phillip B.

    2011-01-01

    The NASA Jet Propulsion Lab (JPL), Glenn Research Center (GRC), Langley Research Center (LaRC), and Aeroflex, Inc. have partnered to develop and test actuator hardware that will survive the stringent environment of the moon, and which can also be leveraged for other challenging space exploration missions. Prototype actuators have been built and tested in a unique low temperature test bed with motor interface temperatures as low as 14 degrees Kelvin. Several years of work have resulted in specialized electro-mechanical hardware to survive extreme space exploration environments, a test program that verifies and finds limitations of the designs at extreme temperatures, and a growing knowledge base that can be leveraged by future space exploration missions.

  18. [Intermediate experiment and mechanism analysis of flue gas desulfurization technology by circulating fluidized bed].

    Science.gov (United States)

    Zhao, Xudong; Wu, Shaohua; Ma, Chunyuan; Qin, Yukun

    2002-03-01

    A new Circulating Fluidized Bed was designed for intermediate experiment of flue gas desulphurization, in which the flue gas flow rate was 3500 m3/h. By using it, the basic experiments were carried out to study the influence of Ca/S and supersaturated temperature on desulphurization efficiency and the effect of the recycling solid particle in the sulfur removal column on desulphurization performance. The results showed when Ca/S = 1.2, the desulphurization efficiency was increased by 15% through the recycle of solid particle; the gas velocity inside the bed could be designed higher. The mechanism analysis were also studied and the method to increase effective resident time was introduced.

  19. Decoding the mechanisms of Antikythera astronomical device

    CERN Document Server

    Lin, Jian-Liang

    2016-01-01

    This book presents a systematic design methodology for decoding the interior structure of the Antikythera mechanism, an astronomical device from ancient Greece. The historical background, surviving evidence and reconstructions of the mechanism are introduced, and the historical development of astronomical achievements and various astronomical instruments are investigated. Pursuing an approach based on the conceptual design of modern mechanisms and bearing in mind the standards of science and technology at the time, all feasible designs of the six lost/incomplete/unclear subsystems are synthesized as illustrated examples, and 48 feasible designs of the complete interior structure are presented. This approach provides not only a logical tool for applying modern mechanical engineering knowledge to the reconstruction of the Antikythera mechanism, but also an innovative research direction for identifying the original structures of the mechanism in the future. In short, the book offers valuable new insights for all...

  20. Mechanics

    CERN Document Server

    Hartog, J P Den

    1961-01-01

    First published over 40 years ago, this work has achieved the status of a classic among introductory texts on mechanics. Den Hartog is known for his lively, discursive and often witty presentations of all the fundamental material of both statics and dynamics (and considerable more advanced material) in new, original ways that provide students with insights into mechanical relationships that other books do not always succeed in conveying. On the other hand, the work is so replete with engineering applications and actual design problems that it is as valuable as a reference to the practicing e

  1. Feasibility Study on HYSOL CSP

    DEFF Research Database (Denmark)

    Nielsen, Lars Henrik; Skytte, Klaus; Pérez, Cristian Hernán Cabrera

    2016-01-01

    salt can be stored and the stored heat can thus increase the load factor and the usability for a CSP plant, e.g. to cover evening peak demand. In the HYSOL concept (HYbrid SOLar) such configuration is extended further to include a gas turbine fuelled by upgraded biogas or natural gas. The optimised....... The CO2 free HYSOL alternative is discussed relative to conventional reference firm power generation technologies. In particular the HYSOL performance relative to new power plants based on natural gas (NG) such as open cycle or combined cycle gas turbines (OCGT or CCGT) are in focus. The feasibility......Concentrating Solar Power (CSP) plants utilize thermal conversion of direct solar irradiation. A trough or tower configuration focuses solar radiation and heats up oil or molten salt that subsequently in high temperature heat exchangers generate steam for power generation. High temperature molten...

  2. A Successful International Cooperation-Enhancing Oil Recovery Feasibility Study

    Institute of Scientific and Technical Information of China (English)

    Wang Dechen

    1994-01-01

    @@ In 1985 Yumen Petroleum Administration Bureau and Institute Francais du Petrole signed a science-technology cooperation agreement on surface active agent-polymer flood feasibility study in the reservoir L of Laojunmiao Oilfield.

  3. Chaos control of the micro-electro-mechanical resonator by using adaptive dynamic surface technology with extended state observer

    Directory of Open Access Journals (Sweden)

    Shaohua Luo

    2016-04-01

    Full Text Available This paper addresses chaos control of the micro-electro- mechanical resonator by using adaptive dynamic surface technology with extended state observer. To reveal the mechanism of the micro- electro-mechanical resonator, the phase diagrams and corresponding time histories are given to research the nonlinear dynamics and chaotic behavior, and Homoclinic and heteroclinic chaos which relate closely with the appearance of chaos are presented based on the potential function. To eliminate the effect of chaos, an adaptive dynamic surface control scheme with extended state observer is designed to convert random motion into regular motion without precise system model parameters and measured variables. Putting tracking differentiator into chaos controller solves the ‘explosion of complexity’ of backstepping and poor precision of the first-order filters. Meanwhile, to obtain high performance, a neural network with adaptive law is employed to approximate unknown nonlinear function in the process of controller design. The boundedness of all the signals of the closed-loop system is proved in theoretical analysis. Finally, numerical simulations are executed and extensive results illustrate effectiveness and robustness of the proposed scheme.

  4. Chaos control of the micro-electro-mechanical resonator by using adaptive dynamic surface technology with extended state observer

    Science.gov (United States)

    Luo, Shaohua; Sun, Quanping; Cheng, Wei

    2016-04-01

    This paper addresses chaos control of the micro-electro- mechanical resonator by using adaptive dynamic surface technology with extended state observer. To reveal the mechanism of the micro- electro-mechanical resonator, the phase diagrams and corresponding time histories are given to research the nonlinear dynamics and chaotic behavior, and Homoclinic and heteroclinic chaos which relate closely with the appearance of chaos are presented based on the potential function. To eliminate the effect of chaos, an adaptive dynamic surface control scheme with extended state observer is designed to convert random motion into regular motion without precise system model parameters and measured variables. Putting tracking differentiator into chaos controller solves the `explosion of complexity' of backstepping and poor precision of the first-order filters. Meanwhile, to obtain high performance, a neural network with adaptive law is employed to approximate unknown nonlinear function in the process of controller design. The boundedness of all the signals of the closed-loop system is proved in theoretical analysis. Finally, numerical simulations are executed and extensive results illustrate effectiveness and robustness of the proposed scheme.

  5. Deformation and Failure Mechanism of Roadway Sensitive to Stress Disturbance and Its Zonal Support Technology

    Directory of Open Access Journals (Sweden)

    Qiangling Yao

    2016-01-01

    Full Text Available The 6163 haulage roadway in the Qidong coal mine passes through a fault zone, which causes severe deformation in the surrounding rock, requiring repeated roadway repairs. Based on geological features in the fault area, we analyze the factors affecting roadway deformation and failure and propose the concept of roadway sensitive to stress disturbance (RSSD. We investigate the deformation and failure mechanism of the surrounding rocks of RSSD using field monitoring, theoretical analysis, and numerical simulation. The deformation of the surrounding rocks involves dilatation of shallow rocks and separation of deep rocks. Horizontal and longitudinal fissures evolve to bed separation and fracture zones; alternatively, fissures can evolve into fracture zones with new fissures extending to deeper rock. The fault affects the stress field of the surrounding rock to ~27 m radius. Its maximum impact is on the vertical stress of the rib rock mass and its minimum impact is on the vertical stress of the floor rock mass. Based on our results, we propose a zonal support system for a roadway passing through a fault. Engineering practice shows that the deformation of the surrounding rocks of the roadway can be effectively controlled to ensure normal and safe production in the mine.

  6. Application of Omics Technologies for Evaluation of Antibacterial Mechanisms of Action of Plant-Derived Products

    Science.gov (United States)

    dos Santos, Bruno S.; da Silva, Luís C. N.; da Silva, Túlio D.; Rodrigues, João F. S.; Grisotto, Marcos A. G.; Correia, Maria T. dos Santos; Napoleão, Thiago H.; da Silva, Márcia V.; Paiva, Patrícia M. G.

    2016-01-01

    In the face of increasing bacterial resistance to antibiotics currently in use, the search for new antimicrobial agents has received a boost in recent years, with natural products playing an important role in this field. In fact, several methods have been proposed to investigate the antibacterial activities of natural products. However, given that the ultimate aim is future therapeutic use as novel drugs, it is extremely necessary to elucidate their modes of action, stating the molecular effects in detail, and identifying their targets in the bacterial cell. This review analyzes the application of “omics technologies” to understand the antibacterial mechanisms of bioactive natural products, to stimulate research interest in this area and promote scientific collaborations. Some studies have been specifically highlighted herein by examining their procedures and results (targeted proteins and metabolic pathways). These approaches have the potential to provide new insights into our comprehension of antimicrobial resistance/susceptibility, creating new perspectives for the struggle against bacteria, and leading to the development of novel products in the future. PMID:27729901

  7. Feasibility Study on the Development of Proton Accelerator II

    Energy Technology Data Exchange (ETDEWEB)

    Whang, Ki Woong [Korea Accelerator and Plasma Research Association, Seoul (Korea, Republic of)

    1997-09-01

    Present status and research trend of KOMAC (Korea Multipurpose Accelerator Complex)-grade accelerator construction in Europe, Japan, America, and Russia are surveyed in view of basic nuclear technology study in 2nd feasibility study on the KOMAC. KOMAC can be applied to study the increasing of nuclear reactor safety, the Proto-plant of transmutation technology for low cost nuclear fuel, the nuclear data production, the life science, mechanical dynamics, the structure probe, the radioisotope production, the cancer therapy, and the defense industry etc. And also KOMAC structure selection is investigated in point of utilization aims referred from various proposal of LANL and ORNL in USA, Neutron Science Research program in Japan, Energy Amplifier in Europe, and Institute of Theoretical and Experimental physics in Russia. As a result of meeting, study team is approached to the conclusion the KOMAC should be constructed to get the nuclear transmutation technology and the world leadership in future nuclear industry. Member`s opinion of study team agreed new nuclear technology, such as Accelerator Driven Energy Amplifier will be possible to sustain a survival of human being in post 21c. 7 tabs., 10 figs. (author)

  8. [Mechanism and kinetics of phenol degradation by TiO2 photocatalytic combined technologies].

    Science.gov (United States)

    Zhang, Yi; Huang, Ruo-Nan; Wang, Xiao-Min; Wang, Qi; Cong, Yan-Qing

    2013-02-01

    The combination H2O2, or electrical catalytic (EC) system with TiO2 photbcatalytic system for phenol degradation was investigated. The catalytic systems of TiO2/UV, H2O2/UV, TiO2/UV/H2O2 and TiO2/UV/EC were compared to investigate the phenol degradation mechanism and kinetic model. The degradation of phenol in TiO2/UV/H2O2 and TiO2/UV/EC system is more effective than that in TiO2/UV system. With the solution pH of 6, TiO, concentration of 0.2 g.L-1, UV illumination of 2 h, the photocatalysis removal efficiency of phenol reaches to 86%, if the current density of 12 mA.cm-2 is added, the removal efficiency of phenol could reach to 100%. The energy utilization in different catalytic systems was also compared. When phenol is degraded in 15 min, in TiO2/UV/EC system the energy utilization is the highest of 0.0306 g.(kW. h)-1 with the energy consumption of 0.0640 kW.h-1. It indicates that much more energy is used in TiO2/UV/EC system for phenol degradation. During the analysis of intermediate products in different catalysis systems, the first-order kinetic model of phenol degradation and intermediate products such as hydroquinone, catechol and benzoquinone formation were established. The kinetic model is validated the phenol degradation pathway in different catalysis systems, and also indicates the TiO2/UV/EC system could enhance phenol and intermediate products degradation.

  9. An Optical Fiber Viscometer Based on Long-Period Fiber Grating Technology and Capillary Tube Mechanism

    Directory of Open Access Journals (Sweden)

    Jian-Neng Wang

    2010-12-01

    Full Text Available This work addresses the development and assessment of a fiber optical viscometer using a simple and low-cost long-period fiber grating (LPFG level sensor and a capillary tube mechanism. Previous studies of optical viscosity sensors were conducted by using different optical sensing methods. The proposed optical viscometer consists of an LPFG sensor, a temperature-controlled chamber, and a cone-shaped reservoir where gravitational force could cause fluid to flow through the capillary tube. We focused on the use of LPFGs as level sensors and the wavelength shifts were not used to quantify the viscosity values of asphalt binders. When the LPFG sensor was immersed in the constant volume (100 mL AC-20 asphalt binder, a wavelength shift was observed and acquired using LabVIEW software and GPIB controller. The time spent between empty and 100 mL was calculated to determine the discharge time. We simultaneously measured the LPFG-induced discharge time and the transmission spectra both in hot air and AC-20 asphalt binder at five different temperatures, 60, 80, 100, 135, and 170 Celsius. An electromechanical rotational viscometer was also used to measure the viscosities, 0.15–213.80 Pa·s, of the same asphalt binder at the above five temperatures. A non-linear regression analysis was performed to convert LPFG-induced discharge time into viscosities. Comparative analysis shows that the LPFG-induced discharge time agreed well with the viscosities obtained from the rotational viscometer.

  10. Suitable retention and recovery technology of floor coal at ends of fully mechanized face with great mining heights

    Institute of Scientific and Technical Information of China (English)

    Zhang Nenghu; WU Qi; Yuan Yong; Bai Qingsheng

    2011-01-01

    Gateways at faces of great mining heights are mostly driven along the roof of coal seams. For gateway height restrictions, a 1-3 m floor coal is retained, leaving a triangular floor coal at the face ends, causing a loss of coal. In order to improve coal recovery rates and to ensure efficiency of equipment at coal mining faces, we investigated suitable retention methods and recovery technology of floor coal at face ends. The upper floor coal can directly be recovered by a shearer with floor dinting. The lower floor coal is recovered by shearer with floor dinting after advanced floor dinting and retaining a step for protecting coal sides in a haulage gateway. Field practice shows that this method can improve the coal recovery rates at fully mechanized working faces with great mining heights.

  11. Economic feasibility study for phosphorus recovery processes.

    Science.gov (United States)

    Molinos-Senante, María; Hernández-Sancho, Francesc; Sala-Garrido, Ramón; Garrido-Baserba, Manel

    2011-06-01

    Phosphorus recovery from wastewater has become a necessity for sustainable development because phosphorus is a non-renewable essential resource, and its discharge into the environment causes serious negative impacts. There are no economic incentives for the implementation of phosphorus recovery technologies because the selling price of rock phosphate is lower than phosphorus recovered from sewage. The methodologies used to determine the feasibility of such projects are usually focused on internal costs without considering environmental externalities. This article shows a methodology to assess the economic feasibility of wastewater phosphorus recovery projects that takes into account internal and external impacts. The shadow price of phosphorus is estimated using the directional distance function to measure the environmental benefits obtained by preventing the discharge of phosphorus into the environment. The economic feasibility analysis taking into account the environmental benefits shows that the phosphorus recovery is viable not only from sustainable development but also from an economic point of view.

  12. Mechanisms for improving mass transfer in food with ultrasound technology: Describing the phenomena in two model cases.

    Science.gov (United States)

    Miano, Alberto Claudio; Ibarz, Albert; Augusto, Pedro Esteves Duarte

    2016-03-01

    The aim of this work was to demonstrate how ultrasound mechanisms (direct and indirect effects) improve the mass transfer phenomena in food processing, and which part of the process they are more effective in. Two model cases were evaluated: the hydration of sorghum grain (with two water activities) and the influx of a pigment into melon cylinders. Different treatments enabled us to evaluate and discriminate both direct (inertial flow and "sponge effect") and indirect effects (micro channel formation), alternating pre-treatments and treatments using an ultrasonic bath (20 kHz of frequency and 28 W/L of volumetric power) and a traditional water-bath. It was demonstrated that both the effects of ultrasound technology are more effective in food with higher water activity, the micro channels only forming in moist food. Moreover, micro channel formation could also be observed using agar gel cylinders, verifying the random formation of these due to cavitation. The direct effects were shown to be important in mass transfer enhancement not only in moist food, but also in dry food, this being improved by the micro channels formed and the porosity of the food. In conclusion, the improvement in mass transfer due to direct and indirect effects was firstly discriminated and described. It was proven that both phenomena are important for mass transfer in moist foods, while only the direct effects are important for dry foods. Based on these results, better processing using ultrasound technology can be obtained.

  13. Partitionable-space enhanced coagulation (PEC) reactor and its working mechanism: a new prospective chemical technology for phosphorus pollution control.

    Science.gov (United States)

    Zhang, Meng; Zheng, Ping; Abbas, Ghulam; Chen, Xiaoguang

    2014-02-01

    Phosphorus pollution control and phosphorus recycling, simultaneously, are focus of attention in the wastewater treatment. In this work, a novel reactor named partitionable-space enhanced coagulation (PEC) was invented for phosphorus control. The working performance and process mechanism of PEC reactor were investigated. The results showed that the PEC technology was highly efficient and cost-effective. The volumetric removal rate (VRR) reached up to 2.86 ± 0.04 kg P/(m(3) d) with a phosphorus removal rate of over 97%. The precipitant consumption was reduced to 2.60-2.76 kg Fe(II)/kg P with low operational cost of $ 0.632-0.673/kg P. The peak phosphorus content in precipitate was up to 30.44% by P2O5, which reveal the benefit of the recycling phosphorus resource. The excellent performance of PEC technology was mainly attributed to the partitionable-space and 'flocculation filter'. The partition limited the trans-regional back-mixing of reagents along the reactor, which promoted the precipitation reaction. The 'flocculation filter' retained the microflocs, enhancing the flocculation process.

  14. Triboelectric nanogenerators as new energy technology for self-powered systems and as active mechanical and chemical sensors.

    Science.gov (United States)

    Wang, Zhong Lin

    2013-11-26

    Triboelectrification is an effect that is known to each and every one probably since ancient Greek time, but it is usually taken as a negative effect and is avoided in many technologies. We have recently invented a triboelectric nanogenerator (TENG) that is used to convert mechanical energy into electricity by a conjunction of triboelectrification and electrostatic induction. As for this power generation unit, in the inner circuit, a potential is created by the triboelectric effect due to the charge transfer between two thin organic/inorganic films that exhibit opposite tribo-polarity; in the outer circuit, electrons are driven to flow between two electrodes attached on the back sides of the films in order to balance the potential. Since the most useful materials for TENG are organic, it is also named organic nanogenerator, which is the first using organic materials for harvesting mechanical energy. In this paper, we review the fundamentals of the TENG in the three basic operation modes: vertical contact-separation mode, in-plane sliding mode, and single-electrode mode. Ever since the first report of the TENG in January 2012, the output power density of TENG has been improved 5 orders of magnitude within 12 months. The area power density reaches 313 W/m(2), volume density reaches 490 kW/m(3), and a conversion efficiency of ∼60% has been demonstrated. The TENG can be applied to harvest all kinds of mechanical energy that is available but wasted in our daily life, such as human motion, walking, vibration, mechanical triggering, rotating tire, wind, flowing water, and more. Alternatively, TENG can also be used as a self-powered sensor for actively detecting the static and dynamic processes arising from mechanical agitation using the voltage and current output signals of the TENG, respectively, with potential applications for touch pad and smart skin technologies. To enhance the performance of the TENG, besides the vast choices of materials in the triboelectric

  15. Mechanical construction technology of ready-mixed mortar%预拌砂浆机械化施工技术

    Institute of Scientific and Technical Information of China (English)

    赵欣

    2012-01-01

    Based on the policies of "prohibiting the mixing of mortar at construction sites" and promoting the use of ready-mixed mortar, the ma- jor obstacles of the promotion of ready-mixed mortar were analyzed and the mechanical construction technology of ready-mixed mortar was intro- duced. It was showed that mechanical construction could effectively reduce the comprehensive cost of the construction project, solve the bottle- neck problem of the promotion of ready-mixed mortar.%在国家“禁现”、推广使用预拌砂浆的政策下,分析了预拌砂浆推广过程中的主要障碍,介绍了预拌砂浆机械化施工技术,结果表明,机械化施工的运用可有效降低建设工程综合成本,解决推广预拌砂浆的瓶颈问题。

  16. Education for hydraulics and pneumatics in Nippon Institute of Technology, Department of Mechanical Engineering; Nippon Kogyo Daigaku ni okeru yukuatsukyoiku

    Energy Technology Data Exchange (ETDEWEB)

    Terashima, Y. [Nippon Institute of Technology, Saitama (Japan)

    2000-03-15

    Described herein is education of hydraulics and pneumatics in Nippon Institute of Technology. Department of Mechanical Engineering has fluid dynamics, mechatronics II, air conditioning, heat transfer engineering, and facility and equipment engineering as the themes related to hydraulics and pneumatics. The control engineering courses have the pneumatics-related themes of supply of pneumatic pressure for a short time and methods for cutting off pneumatic pressure when the piston reaches the dead center, as the energy-saving type driving methods for pneumatic cylinders; measurement of frictional force by the experiments on low-friction cylinders; and researches on improvement of stiffness of pneumatic cylinder type actuators for control valves, among others. Students are directly involved in equipment designs, fabrication and experiments. Many machines and facilities are now easily handled, and operated according to manuals. To prepare graduation theses only by the aid of personal computers is not adequate for education of students in this age, when they have less chances for education through experiences in affluent environments. The mechanical engineering students are given chances for practical education through experiments and graduation thesis preparation. However, it is necessary for general engineering students to be more exposed to technical practices. (NEDO)

  17. Fracture mechanics analysis on Smart-Cut(R) technology. Part 1: Effects of stiffening wafer and defect interaction

    Institute of Scientific and Technical Information of China (English)

    Bin Gu; Hongyuan Liu; YiuWing Mai; Xi Qiao Feng; Shou Wen Yu

    2009-01-01

    In the present paper, continuum fracture mecha-nics is used to analyze the Smart-Cut process, a recently established ion cut technology which enables highly efficient fabrication of various silicon-on-insulator (SO1) wafers of high uniformity in thickness. Using integral transform and Cauchy singular integral equation methods, the mode-Ⅰ and mode-II stress intensity factors, energy release rate, and crack opening displacements are derived in order to examine seve-ral important fracture mechanisms involved in the Smart-Cut process. The effects of defect interaction and stiffening wafer on defect growth are investigated. The numerical results indi-cate that a stiffener/handle wafer can effectively prevent the donor wafer from blistering and exfoliation, but it slows down the defect growth by decreasing the magnitudes of SIF's. Defect interaction also plays an important role in the splitting process of SOI wafers, but its contribution depends strongly on the size, interval and internal pressure of defects. Finally, an analytical formula is derived to estimate the implantation dose required for splitting a SOI wafer.

  18. Mechanical and thermal property characterization of poly-l-lactide (PLLA) scaffold developed using pressure-controllable green foaming technology.

    Science.gov (United States)

    Sheng, Shen-Jun; Hu, Xiao; Wang, Fang; Ma, Qing-Yu; Gu, Min-Fen

    2015-04-01

    Poly-l-lactide (PLLA) is one of the most promising biological materials used for tissue engineering scaffolds (TES) because of their excellent biodegradability and tenability. Here, microcellular PLLA foams were fabricated by pressure-controllable green foaming technology. Scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), wide angle X-ray diffraction measurement (WAXRD), thermogravimetric (TG) analysis, reflection-Fourier transform infrared (FTIR) analysis, enzymatic degradation study and MTT assay were used to analyze the scaffolds' morphologies, structures and crystallinities, mechanical and biodegradation properties, as well as their cytotoxicity. The results showed that PLLA foams with pore sizes from 8 to 103μm diameters were produced when the saturation pressure decreased from 7.0 to 4.0MPa. Through a combination of StepScan DSC (SSDSC) and WAXRD approaches, it was observed in PLLA foams that the crystallinity, highly-oriented metastable state and rigid amorphous phase increased with the increasing foaming pressure. It was also found that both the glass transition temperature and apparent enthalpy of PLLA significantly increased after the foaming process, which suggested that the changes of microcellular structure could provide PLLA scaffolds better thermal stability and elasticity. Moreover, MTT assessments suggested that the smaller pore size should benefit cell attachment and growth in the scaffold. The results of current work will give us better understanding of the mechanisms involved in structure and property changes of PLLA at the molecular level, which enables more possibilities for the design of PLLA scaffold to satisfy various requirements in biomedical and green chemical applications.

  19. PWR decontamination feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    Silliman, P.L.

    1978-12-18

    The decontamination work which has been accomplished is reviewed and it is concluded that it is worthwhile to investigate further four methods for decontamination for future demonstration. These are: dilute chemical; single stage strong chemical; redox processes; and redox/chemical in combination. Laboratory work is recommended to define the agents and processes for demonstration and to determine the effect of the solvents on PWR materials. The feasibility of Indian Point 1 for decontamination demonstrations is discussed, and it is shown that the system components of Indian Point 1 are well suited for use in demonstrations.

  20. Feasibility Analysis of Crane Automation

    Institute of Scientific and Technical Information of China (English)

    DONG Ming-xiao; MEI Xue-song; JIANG Ge-dong; ZHANG Gui-qing

    2006-01-01

    This paper summarizes the modeling methods, open-loop control and closed-loop control techniques of various forms of cranes, worldwide, and discusses their feasibilities and limitations in engineering. Then the dynamic behaviors of cranes are analyzed. Finally, we propose applied modeling methods and feasible control techniques and demonstrate the feasibilities of crane automation.

  1. Mechanics

    CERN Document Server

    Chester, W

    1979-01-01

    When I began to write this book, I originally had in mind the needs of university students in their first year. May aim was to keep the mathematics simple. No advanced techniques are used and there are no complicated applications. The emphasis is on an understanding of the basic ideas and problems which require expertise but do not contribute to this understanding are not discussed. How­ ever, the presentation is more sophisticated than might be considered appropri­ ate for someone with no previous knowledge of the subject so that, although it is developed from the beginning, some previous acquaintance with the elements of the subject would be an advantage. In addition, some familiarity with element­ ary calculus is assumed but not with the elementary theory of differential equations, although knowledge of the latter would again be an advantage. It is my opinion that mechanics is best introduced through the motion of a particle, with rigid body problems left until the subject is more fully developed. Howev...

  2. The effect of time gaining on chemical composition and technological characteristics of mechanically separated turkey meat (MSM

    Directory of Open Access Journals (Sweden)

    Aneta Cegiełka

    2016-12-01

    Full Text Available Mechanically separated meat (MSM of poultry is a raw material widely used in the meat industry in Poland and most European Union countries. The manner and conditions for the production of this raw material cause, however, that it has limited technological usefulness. In this study the effect of time of obtaining turkey MSM produced by pressure separation on selected quality characteristics of this raw material: basic chemical composition, pH, thermal loss, water binding capacity and colour was determined. The experimental material consisted of MSM, which was collected directly from the machine after 1, 2 and 3 h of operation. The content of water, protein and fat in MSM was determined using a near infrared spectrometer. The instrumental measurement of colour parameters was performed in the CIE L*a*b* (1976 system. Determination of ash content in MSM and pH measurement were performed according to the requirements of Polish standards, and to determine other technological quality characteristics the methods described in the literature were used. It was found that the extension of working time of the pressure separator from 1 to 3 h resulted in a significant increase in the water content in turkey MSM. Furthermore, the MSM sample obtained after 3 h of operation of the device was characterized by a significantly lower thermal loss and higher water binding capacity than a similar material, but obtained after 1 and 2 h of operation of the device. Time of obtaining of turkey MOM had no significant effect on the content of protein, fat and ash, pH value and colour parameters (L*, a*, b* of the raw material.

  3. Research and Promotion of New Technology of Corn Mechanized Production%玉米全程机械化生产新技术研究与推广

    Institute of Scientific and Technical Information of China (English)

    勾峰; 赵振芳; 王晓峰

    2014-01-01

    文章通过对吉林省玉米全程机械化生产过程中科技推广效益的分析,进一步明确了玉米全程机械化生产新技术研究与推广的重要意义,具有广阔的推广前景。%This paper further defines the significance of research and promotion of new technology of corn mechanized production by analyzing the effectiveness of science and technology promotion in the process of corn mechanized production in Jilin province, which is of broad promotion prospect.

  4. Nuclear Power Feasibility 2007

    OpenAIRE

    Aragonés Beltrán, José María; Hill, Barrie Frederick; Kadak, Andrew C.; Shultz, Donald F.; Spitalnik, Jorge

    2008-01-01

    Nuclear power is a proven technology and has the potential to generate virtually limitless energy with no significant greenhouse gas emissions. Nuclear power can become one of the main options to contribute to substantial cuts in global greenhouse gas emissions. Modern development of nuclear power technology and the established framework of international agreements and conventions are responding to the major political, economic and environmental issues -high capital costs, the risks posed by ...

  5. Anticipatory precrash restraint sensor feasibility study: Final report

    Energy Technology Data Exchange (ETDEWEB)

    Kercel, S.W.; Dress, W.B.

    1995-08-01

    This report explores feasibility of an anticipatory precrash restraint sensor. The foundation principle is the anticipation mechanism found at a primitive level of biological intelligence and originally formalized by the mathematical biologist Robert Rosen. A system based on formal anticipatory principles should significantly outperform conventional technologies. It offers the prospect of high payoff in prevention of death and injury. Sensors and processes are available to provide a good, fast, and inexpensive description of the present dynamical state of the vehicle to the embedded system model in the anticipation engine. The experimental part of this study found that inexpensive radar in a real-world setting does return useful data on target dynamics. The data produced by a radar system can be converted to target dynamical information by good, fast and inexpensive signal-processing techniques. Not only is the anticipatory sensor feasible, but further development under the sponsorship of the National Highway Traffic Safety Administration is necessary and desirable. There are a number of possible lines of follow-on investigation. The level of effort and expected benefits of various alternatives are discussed.

  6. Fiscal 1998 research report. Study on the feasibility of microorganism biotechnology for effective use of environmental pollutants. Pt. 2; 1998 nendochosa hokokusho. Kankyo osen busshitsu no shigenka no tame no biseibutsu bio technology riyo kanosei ni kansuru chosa. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Study was made on the feasibility of microorganism biotechnology for effective use of environmental pollutants and unused resources. Microorganisms and microorganism enzymes for decomposing lignocellulose were viewed, and uses of hydrolysis products were summarized. Production of microorganisms applicable to fodder, composting, and production of energy sources (methane, hydrogen, ethanol) were studied. Use of vegetable fiber residues such as beer lees as fungus cultivation medium and conversion to valuable substances were also studied. Microorganisms treatment (MT) of wastes in fats and oils industry was summarized. Effective use of MT of protein waste from marine products was studied. MT of manures with the greatest impact on environment as livestock waste was summarized. The necessity of separate collection of domestic wastes, and composting and methane fermentation of kitchen garbage were reported. The feasibility of MT of plastic wastes, and decomposition of halogenated methane with high toxicity were also studied. (NEDO)

  7. Estimating the budget impact of new technologies added to the National List of Health Services in Israel: stakeholders' incentives for adopting a financial risk-sharing mechanism.

    Science.gov (United States)

    Hammerman, Ariel; Greenberg, Dan

    2009-01-01

    The Israeli National List of Health Services (NLHS) is updated annually according to a government allocated budget. The estimated annual cost of each new technology added to this list is based on budget-impact estimations provided by the HMOs and the manufacturers. The HMOs argue that once a new technology is reimbursed, extensive marketing efforts by industry expands demand and renders the allocated budget insufficient. Industry claims that HMOs, in order to secure a sufficient budget, tend to over-estimate the number of target patients. We provide a framework for a financial risk-sharing mechanism between HMOs and the industry, which may be able to balance these incentives and result in more accurate early budget-impact estimates. To explore the current stakeholders' incentives and behaviors under the existing process of updating the NLHS, and to examine the possible incentives for adopting a financial risk-sharing mechanism on early budget-impact estimations. According to the financial risk-sharing mechanism, HMOs will be partially compensated by the industry if actual use of a technology is substantially higher than what was projected. HMOs will partially refund the government for a budget that was not fully used. To maintain profits, we assume that the industry will present a more realistic budget-impact analysis. HMOs will be less apprehensive of technology promotion, as they would be compensated in case of budget under-estimation. In case of over-estimation of technology use, the budget re-allocated will be used to enlarge the NLHS which is in the best interest of the health technology industry. Our proposed risk-sharing mechanism is expected to counter balance incentives and disincentives that currently exist in adopting new health technologies in the Israeli healthcare system.

  8. Optical and mechanical properties of nanofibrillated cellulose: Toward a robust platform for next-generation green technologies.

    Science.gov (United States)

    Simão, Claudia D; Reparaz, Juan S; Wagner, Markus R; Graczykowski, Bartlomiej; Kreuzer, Martin; Ruiz-Blanco, Yasser B; García, Yamila; Malho, Jani-Markus; Goñi, Alejandro R; Ahopelto, Jouni; Sotomayor Torres, Clivia M

    2015-08-01

    Nanofibrillated cellulose, a polymer that can be obtained from one of the most abundant biopolymers in nature, is being increasingly explored due to its outstanding properties for packaging and device applications. Still, open challenges in engineering its intrinsic properties remain to address. To elucidate the optical and mechanical stability of nanofibrillated cellulose as a standalone platform, herein we report on three main findings: (i) for the first time an experimental determination of the optical bandgap of nanofibrillated cellulose, important for future modeling purposes, based on the onset of the optical bandgap of the nanofibrillated cellulose film at Eg≈275 nm (4.5 eV), obtained using absorption and cathodoluminescence measurements. In addition, comparing this result with ab-initio calculations of the electronic structure the exciton binding energy is estimated to be Eex≈800 meV; (ii) hydrostatic pressure experiments revealed that nanofibrillated cellulose is structurally stable at least up to 1.2 GPa; and (iii) surface elastic properties with repeatability better than 5% were observed under moisture cycles with changes of the Young modulus as large as 65%. The results obtained show the precise determination of significant properties as elastic properties and interactions that are compared with similar works and, moreover, demonstrate that nanofibrillated cellulose properties can be reversibly controlled, supporting the extended potential of nanofibrillated cellulose as a robust platform for green-technology applications.

  9. Standardization of seismic tomographic models and earthquake focal mechanisms data sets based on web technologies, visualization with keyhole markup language

    Science.gov (United States)

    Postpischl, Luca; Danecek, Peter; Morelli, Andrea; Pondrelli, Silvia

    2011-01-01

    We present two projects in seismology that have been ported to web technologies, which provide results in Keyhole Markup Language (KML) visualization layers. These use the Google Earth geo-browser as the flexible platform that can substitute specialized graphical tools to perform qualitative visual data analyses and comparisons. The Network of Research Infrastructures for European Seismology (NERIES) Tomographic Earth Model Repository contains data sets from over 20 models from the literature. A hierarchical structure of folders that represent the sets of depths for each model is implemented in KML, and this immediately results into an intuitive interface for users to navigate freely and to compare tomographic plots. The KML layer for the European-Mediterranean Regional Centroid-Moment Tensor Catalog displays the focal mechanism solutions or moderate-magnitude Earthquakes from 1997 to the present. Our aim in both projects was to also propose standard representations of scientific data sets. Here, the general semantic approach of an XML framework has an important impact that must be further explored, although we find the KML syntax to more emphasis on aspects of detailed visualization. We have thus used, and propose the use of, Javascript Object Notation (JSON), another semantic notation that stems from the web-development community that provides a compact, general-purpose, data-exchange format.

  10. XSS攻击机制及防御技术浅谈%Discussion on XSS attack mechanism and defense technology

    Institute of Scientific and Technical Information of China (English)

    葛强; 李俊; 胡永权

    2016-01-01

    跨站脚本攻击(XSS)是客户端Web安全的主要威胁。因跨站脚本攻击的多样性以及Web安全漏洞的隐蔽性,使得该类型的攻击很难彻底防御。介绍了跨站脚本攻击的基本概念,针对不同环境发生的跨站脚本攻击机制进行了分析,探讨了不同环境下如何防御跨站脚本攻击的具体技术。%Cross site scripting (XSS) attack is a major threat to the security of Web client. Because of the diversity of XSS attacks and Web security vulnerabilities hidden, this type of attack is very difficult to completely defense. This paper introduces the basic concept of XSS attacks, analyzes the XSS attack mechanisms of different environment, and discusses the specific technology to defense the XSS attacks of different environment.

  11. Computational algorithms dealing with the classical and statistical mechanics of celestial scale polymers in space elevator technology

    Science.gov (United States)

    Knudsen, Steven; Golubovic, Leonardo

    Prospects to build Space Elevator (SE) systems have become realistic with ultra-strong materials such as carbon nano-tubes and diamond nano-threads. At cosmic length-scales, space elevators can be modeled as polymer like floppy strings of tethered mass beads. A new venue in SE science has emerged with the introduction of the Rotating Space Elevator (RSE) concept supported by novel algorithms discussed in this presentation. An RSE is a loopy string reaching into outer space. Unlike the classical geostationary SE concepts of Tsiolkovsky, Artsutanov, and Pearson, our RSE exhibits an internal rotation. Thanks to this, objects sliding along the RSE loop spontaneously oscillate between two turning points, one of which is close to the Earth whereas the other one is in outer space. The RSE concept thus solves a major problem in SE technology which is how to supply energy to the climbers moving along space elevator strings. The investigation of the classical and statistical mechanics of a floppy string interacting with objects sliding along it required development of subtle computational algorithms described in this presentation

  12. Study on Clean Development Mechanism, Quantitative and Sustainable Mechanism

    Directory of Open Access Journals (Sweden)

    Donghai Yuan

    2015-01-01

    Full Text Available Aiming at the system and market problem of clean development mechanism (CDM, this study is carried out to establish the feasibility of certified emission reduction (CER quantitative evaluation method and reserve mechanism in host country at the United Nations Framework Convention on Climate Change (UNFCCC level. After the introduction of CER quantitative and sustainable mechanism, the amount of CER that can enter the market was cut to a quarter, which reduces about 75% of the expected CER supply. Market CER from the technology types of higher CER market share and lower support for sustainable development appears to have different degrees of reduction. As for the technology types of lower CER market share and higher support for sustainable development, the amount of market CER is maintained in line with prevailing scenario, and market CER supply becomes more balanced.

  13. Feasibility biopower; Mulighetsstudie biokraft

    Energy Technology Data Exchange (ETDEWEB)

    Norheim, Arnstein; Eikrem, Tor Olav; Bernhard, Peter; Sollesnes, Geir; Bugge, Lars

    2011-02-15

    The term biopower is used for electric power produced through the conversion of biomass in one or other power producing technology. Most biopower plants use steam turbines to produce electricity. Gas engine, gas turbine, steam engine, Stirling engine and the ORC are examples of other technologies used. Steam turbines represent robust and well-known technology and can achieve relatively high efficiency. Apart from waste incinerators, and landfill / biogas plant with virtually free gas, it is not profitable to build clean power plants based on biomass, with the price / cost ratio and other parameters that we have today. In practice, it is for industry players and for the establishment of central heating only necessary to build forest plants, with typically 5 - 25% produced electric power for heating. Market Potential for biopower in Norway until 2020 is described in the study. (AG)

  14. Fundamental Research on Percussion Drilling: Improved rock mechanics analysis, advanced simulation technology, and full-scale laboratory investigations

    Energy Technology Data Exchange (ETDEWEB)

    Michael S. Bruno

    2005-12-31

    drilling tests, as well as single impact tests, have been designed and executed. Both Berea sandstone and Mancos shale samples are used. In single impact tests, three impacts are sequentially loaded at the same rock location to investigate rock response to repetitive loadings. The crater depth and width are measured as well as the displacement and force in the rod and the force in the rock. Various pressure differences across the rock-indentor interface (i.e. bore pressure minus pore pressure) are used to investigate the pressure effect on rock penetration. For hammer drilling tests, an industrial fluid hammer is used to drill under both underbalanced and overbalanced conditions. Besides calibrating the modeling tool, the data and cuttings collected from the tests indicate several other important applications. For example, different rock penetrations during single impact tests may reveal why a fluid hammer behaves differently with diverse rock types and under various pressure conditions at the hole bottom. On the other hand, the shape of the cuttings from fluid hammer tests, comparing to those from traditional rotary drilling methods, may help to identify the dominant failure mechanism that percussion drilling relies on. If so, encouraging such a failure mechanism may improve hammer performance. The project is summarized in this report. Instead of compiling the information contained in the previous quarterly or other technical reports, this report focuses on the descriptions of tasks, findings, and conclusions, as well as the efforts on promoting percussion drilling technologies to industries including site visits, presentations, and publications. As a part of the final deliveries, the 3D numerical model for rock mechanics is also attached.

  15. Feasibility study of international cooperation on the chemical CO2 fixation and effective utilization technology in FY 1996; 1996 nendo kagakuteki CO2 koteika yuko riyo gijutsu ni kakawaru kokusai kyoryoku kanosei chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    In this survey, candidate organizations to cooperate internationally in the development of chemical CO2 fixation technologies have been selected, and possible forms of the cooperation each organization would participate in have been examined. The chemical CO2 fixation technology project of RITE (Research Institute of Innovation Technology for the Earth) involves the essential themes of CO2 separation membrane technology, catalytic hydrogenation reaction technology, and hydrogen production/supply technology, as well as the overall system. Through the arrangement, 19 international research institutes were selected as the potential candidates for international research cooperation. Either direct visit or questionnaire by mail was conducted to these institutes. The purposes of international cooperation in each of essential study theme are to review the possibility of improving technologies in each theme by introducing new technologies, and to review the possibilities of promoting practical implementation of chemical CO2 fixation system. The research institutes to be reviewed as partners for joint research are summarized. 10 figs., 16 tabs.

  16. Feasibility study of a railgun as a driver for impact fusion: Final report

    Energy Technology Data Exchange (ETDEWEB)

    Thio. Y.C.

    1986-06-01

    The feasibility of a railgun as a driver for impact fusion is studied through a series of theoretical and experimental investigations. The results of both the theoretical and experimental investigations presented here have helped to identify the potential problems of the railgun launcher to attain velocity in excess of 100 km/s. These include ablation, viscous drag, and secondary arc formation due to either armature dispersion (instability) or restrike. These problems are analyzed and examined experimentally. The behavior of the conventional open-plasma-armature driven railguns have been shown to be quite complex and not easily controllable in the domain of ultrahigh velocity (>6 km/s). Methods to overcome these problems are proposed, analyzed in regards to their technological feasibility, and tested experimentally wherever possible. Techniques for reducing radiative ablation, the concept of a mechanically controlled plasma armature, and the concept of achieving super high augmentation by the technique of trans-augmentation are presented.

  17. Muon muon collider: Feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-06-18

    A feasibility study is presented of a 2 + 2 TeV muon collider with a luminosity of L = 10{sup 35} cm{sup {minus}2} s{sup {minus}1}. The resulting design is not optimized for performance, and certainly not for cost; however, it does suffice--the authors believe--to allow them to make a credible case, that a muon collider is a serious possibility for particle physics and, therefore, worthy of R and D support so that the reality of, and interest in, a muon collider can be better assayed. The goal of this support would be to completely assess the physics potential and to evaluate the cost and development of the necessary technology. The muon collider complex consists of components which first produce copious pions, then capture the pions and the resulting muons from their decay; this is followed by an ionization cooling channel to reduce the longitudinal and transverse emittance of the muon beam. The next stage is to accelerate the muons and, finally, inject them into a collider ring which has a small beta function at the colliding point. This is the first attempt at a point design and it will require further study and optimization. Experimental work will be needed to verify the validity of diverse crucial elements in the design.

  18. Feasibility study: PASS computer environment

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-03-10

    The Policy Analysis Screening System (PASS) is a computerized information-retrieval system designed to provide analysts in the Department of Energy, Assistant Secretary for Environment, Office of Technology Impacts (DOE-ASEV-OTI) with automated access to articles, computer simulation outputs, energy-environmental statistics, and graphics. Although it is essential that PASS respond quickly to user queries, problems at the computer facility where it was originally installed seriously slowed PASS's operations. Users attempting to access the computer by telephone repeatedly encountered busy signals and, once logged on, experienced unsatisfactory delays in response to commands. Many of the problems stemmed from the system's facility manager having brought another large user onto the system shortly after PASS was implemented, thereby significantly oversubscribing the facility. Although in March 1980 Energy Information Administration (EIA) transferred operations to its own computer facility, OTI has expressed concern that any improvement in computer access time and response time may not be sufficient or permanent. Consequently, a study was undertaken to assess the current status of the system, to identify alternative computer environments, and to evaluate the feasibility of each alternative in terms of its cost and its ability to alleviate current problems.

  19. Effect of mechanically deboned poultry meat content on technological properties and sensory characteristics of lamb and mutton sausages.

    Science.gov (United States)

    Massingue, Armando Abel; Torres Filho, Robledo de Almeida; Fontes, Paulo Rogerio; Ramos, Alcinéia de Souza; Fontes, Edimar Aparecida Filomeno; Olalquiaga Perez, Juan Ramon; Ramos, Eduardo Mendes

    2017-09-18

    This study aimed to develop a value-added product concerning technological and sensory characteristics changes of the use of mechanically deboned poultry meat (MDPM) as meat replacer in lamb and mutton emulsion-type sausages (mortadella). Sausages were produced with lamb and mutton and with different contents of MDPM. Six treatments, using lamb or mutton and 0, 30% and 60% of MDPM in relation to the meat batter, were produced and analyzed for pH, proximal composition, calcium and residual nitrite content, water activity, TBA reactive substances (TBARS), instrumental color and texture profile. The sensory profile of the mortadella's was also evaluated by acceptance test and check-all-that-applies (CATA) analysis. The MDPM addition increased (P < 0.05) fat, residual nitrite and calcium content in the all sausage formulations, but mutton sausage had (P < 0.05) higher fat and lower moisture content than lamb sausage. The pH, water activity, TBARS index and color was not affected by MDPM additions, while the mutton sausages were significantly redder (higher a*, C* and lower h°) and darker (lower L*) than lamb sausages. Adding up to 60% of MDPM reduced (P < 0.05) sausages hardness and chewiness. Overall, the meat replacement by MDPM increased the sausages acceptance, but the mutton sausage with 30% of MDPM replacer were the most preferred. Consumers related that pink color, glossy appearance, poultry meat-like taste, soft texture, juicy and greasy mouth feel to all sausages contain MDPM according to CATA analysis. Mutton from culled ewes can be utilized for mortadella production with 30% replacement of lean mutton and fat by MDPM.

  20. Tribal Utility Feasibility Study

    Energy Technology Data Exchange (ETDEWEB)

    Engel, R. A.; Zoellick, J. J.

    2007-06-30

    The Schatz Energy Research Center (SERC) assisted the Yurok Tribe in investigating the feasibility of creating a permanent energy services program for the Tribe. The original purpose of the DOE grant that funded this project was to determine the feasibility of creating a full-blown Yurok Tribal electric utility to buy and sell electric power and own and maintain all electric power infrastructure on the Reservation. The original project consultant found this opportunity to be infeasible for the Tribe. When SERC took over as project consultant, we took a different approach. We explored opportunities for the Tribe to develop its own renewable energy resources for use on the Reservation and/or off-Reservation sales as a means of generating revenue for the Tribe. We also looked at ways the Tribe can provide energy services to its members and how to fund such efforts. We identified opportunities for the development of renewable energy resources and energy services on the Yurok Reservation that fall into five basic categories: • Demand-side management – This refers to efforts to reduce energy use through energy efficiency and conservation measures. • Off-grid, facility and household scale renewable energy systems – These systems can provide electricity to individual homes and Tribal facilities in areas of the Reservation that do not currently have access to the electric utility grid. • Village scale, micro-grid renewable energy systems - These are larger scale systems that can provide electricity to interconnected groups of homes and Tribal facilities in areas of the Reservation that do not have access to the conventional electric grid. This will require the development of miniature electric grids to serve these interconnected facilities. • Medium to large scale renewable energy development for sale to the grid – In areas where viable renewable energy resources exist and there is access to the conventional electric utility grid, these resources can be

  1. Battery energy storage market feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    Kraft, S. [Frost and Sullivan, Mountain View, CA (United States); Akhil, A. [Sandia National Labs., Albuquerque, NM (United States). Energy Storage Systems Analysis and Development Dept.

    1997-07-01

    Under the sponsorship of the Department of Energy`s Office of Utility Technologies, the Energy Storage Systems Analysis and Development Department at Sandia National Laboratories (SNL) contracted Frost and Sullivan to conduct a market feasibility study of energy storage systems. The study was designed specifically to quantify the energy storage market for utility applications. This study was based on the SNL Opportunities Analysis performed earlier. Many of the groups surveyed, which included electricity providers, battery energy storage vendors, regulators, consultants, and technology advocates, viewed energy storage as an important enabling technology to enable increased use of renewable energy and as a means to solve power quality and asset utilization issues. There are two versions of the document available, an expanded version (approximately 200 pages, SAND97-1275/2) and a short version (approximately 25 pages, SAND97-1275/1).

  2. Exoskeleton for Soldier Enhancement Systems Feasibility Study

    Energy Technology Data Exchange (ETDEWEB)

    Jansen, J.F.

    2000-09-28

    The development of a successful exoskeleton for human performance augmentation (EHPA) will require a multi-disciplinary systems approach based upon sound biomechanics, power generation and actuation systems, controls technology, and operator interfaces. The ability to integrate key components into a system that enhances performance without impeding operator mobility is essential. The purpose of this study and report are to address the issue of feasibility of building a fieldable EHPA. Previous efforts, while demonstrating progress and enhancing knowledge, have not approached the level required for a fully functional, fieldable system. It is doubtless that the technologies required for a successful exoskeleton have advanced, and some of them significantly. The question to be addressed in this report is have they advanced to the point of making a system feasible in the next three to five years? In this study, the key technologies required to successfully build an exoskeleton have been examined. The primary focus has been on the key technologies of power sources, actuators, and controls. Power sources, including internal combustion engines, fuel cells, batteries, super capacitors, and hybrid sources have been investigated and compared with respect to the exoskeleton application. Both conventional and non-conventional actuator technologies that could impact EHPA have been assessed. In addition to the current state of the art of actuators, the potential for near-term improvements using non-conventional actuators has also been addressed. Controls strategies, and their implication to the design approach, and the exoskeleton to soldier interface have also been investigated. In addition to these key subsystems and technologies, this report addresses technical concepts and issues relating to an integrated design. A recommended approach, based on the results of the study is also presented.

  3. Economic feasibility of biochemical processes for the upgrading of crudes and the removal of sulfur, nitrogen, and trace metals from crude oil -- Benchmark cost establishment of biochemical processes on the basis of conventional downstream technologies. Final report FY95

    Energy Technology Data Exchange (ETDEWEB)

    Premuzic, E.T.

    1996-08-01

    During the past several years, a considerable amount of work has been carried out showing that microbially enhanced oil recovery (MEOR) is promising and the resulting biotechnology may be deliverable. At Brookhaven National Laboratory (BNL), systematic studies have been conducted which dealt with the effects of thermophilic and thermoadapted bacteria on the chemical and physical properties of selected types of crude oils at elevated temperatures and pressures. Current studies indicate that during the biotreatment several chemical and physical properties of crude oils are affected. The oils are (1) emulsified; (2) acidified; (3) there is a qualitative and quantitative change in light and heavy fractions of the crudes; (4) there are chemical changes in fractions containing sulfur compounds; (5) there is an apparent reduction in the concentration of trace metals; and (6) the qualitative and quantitative changes appear to be microbial species dependent; and (7) there is a distinction between biodegraded and biotreated oils. The downstream biotechnological crude oil processing research performed thus far is of laboratory scale and has focused on demonstrating the technical feasibility of downstream processing with different types of biocatalysts under a variety of processing conditions. Quantitative economic analysis is the topic of the present project which investigates the economic feasibility of the various biochemical downstream processes which hold promise in upgrading of heavy crudes, such as those found in California, e.g., Monterey-type, Midway Sunset, Honda crudes, and others.

  4. The study of measuring technology on the dynamic mechanical properties of welded joint with high strain rate

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    In this paper, to meet the needs of studying work of dynamic mechanical properties of welded joint, the dynamic mechanical properties of welded joint were measured by means of SHPB(Split Hopkinson Pressure Bar).The dynamic mechanical property's curves of every part of welded joint were obtained. For studying the dynamic behavior of mechanical heterogeneity of welded joint, important data were offered. The method of test creates a new way of studying dynamic mechanical properties of welded joint.

  5. Technology Tiers

    DEFF Research Database (Denmark)

    Karlsson, Christer

    2015-01-01

    A technology tier is a level in a product system: final product, system, subsystem, component, or part. As a concept, it contrasts traditional “vertical” special technologies (for example, mechanics and electronics) and focuses “horizontal” feature technologies such as product characteristics...

  6. Technology Tiers

    DEFF Research Database (Denmark)

    Karlsson, Christer

    2015-01-01

    A technology tier is a level in a product system: final product, system, subsystem, component, or part. As a concept, it contrasts traditional “vertical” special technologies (for example, mechanics and electronics) and focuses “horizontal” feature technologies such as product characteristics...

  7. 科技信用缺失的治理机制研究%Research on Governance Mechanism of Credit Deficiency in Science and Technology

    Institute of Scientific and Technical Information of China (English)

    钟劲松

    2016-01-01

    科技信用的缺失会影响社会信用风气的形成、科研秩序的建立、自主创新活动的开展和我国科技竞争力的提升等方面。通过分析科技信用缺失的现实表现和产生科技信用缺失的原因,从诚信与职业道德教育、宣传舆论导向引导、科技信用协调联动机制建设、科技信用评价指标体系建设、失信行为惩戒机制建设等方面提出了完善科技信用治理机制的措施。%Loss of Credit in science and technology will affect the formation of the social credit culture,the establish-ment of the scientific research order,the practice of the independent innovation activities and the promotion of tech-nological competitiveness in our country.By analyzing the realistic endeavors of the credit deficiency in science and technology and its causes,the paper puts forward some measures,such as creating good faith and carrying out pro-fessional ethics education,guiding the direction of propaganda and public opinion,constructing the science and technology credit coordinative linkage mechanism and the credit evaluation index system of science and technology and establishing mechanism of disciplining dishonest behaviors,etc.,to perfect the credit in science and technolo-gy managerial mechanism.

  8. Virtual reality technology combined with the high school general feasibility test%虚拟现实与高中通用技术相结合可行性试探

    Institute of Scientific and Technical Information of China (English)

    李光雷

    2012-01-01

    With advances in technology and scientific development, virtual reality technology becomes more and more people' s daily lives, virtual reality technology in general high school education and teaching technical courses, will help solve the common problems faced by technical courses. This article is based on the status of the virtual reality technology and general technology courses to explore the combination of some.%随着技术的进步和科学的发展,虚拟现实技术越来越贴近人们的日常生活,将虚拟现实技术应用于高中通用技术课程的教育教学,将有助于解决目前通用技术课程面对的一些问题.基于这样的现状,将虚拟现实技术与通用技术课程相结合进行一些探究.

  9. Engineering Technology of Mechanical and Electrical Installation of Hydropower Station%水电站机电安装工程技术

    Institute of Scientific and Technical Information of China (English)

    韩进军

    2015-01-01

    我国近年来大力发展水电工程,机电安装工程技术是水电站机电安装工程中非常重要的一项技术.本文主要分析了机电安装工程技术与其存在的问题,并简单探讨了提高机电安装工程技术的方法,保证机电设备的稳定操作和保证机电设备安装质量,进而提供一个良好的基础.%Our country, in recent years, has been greatly developing the hydropower engineering, mechanical and electricalinstallation engineering technology is a very important technology in hydropower stationmechanical and electrical installation. This article mainly analyzes the mechanical and electrical installation engineering technologyand its existing problems, and simply discusses themethod to improve mechanical and electrical installation engineering technology, to ensure the steady operation of mechanical and electrical equipment and ensure the quality ofmechanical and electrical equipment installation, thus providing a good foundation.

  10. Fault Diagnosis Technology of Electromechanical Maintenance in Fully Mechanized Coal Mining%综采机电维修的故障诊断技术

    Institute of Scientific and Technical Information of China (English)

    陈彦青

    2016-01-01

    This paper mainly analyzes the current situation of the development of the fault diagnosis of electromechanical maintenance of fully mechanized, focuses on the electromechanical maintenance of fully mechanized mining process and to explain several mining electrical and mechanical maintenance and fault diagnosis, fully mechanized mining electrical and mechanical maintenance and fault diagnosis technology can not only discover the problems existing in the work of fully mechanized mining electromechanical, but also can raise the work efficiency of the fully mechanized mining electromechanical and ensure the smooth progress of coal mining. Through the research on the fault diagnosis technology of mechanized mining machinery maintenance, in order to ensure the smooth running of mechanical and electrical maintenance,timely solve the existing problems,thus obtaining the highest economic benefits.%主要分析了综采机电维修故障诊断的发展现状,重点介绍了综采机电维修的流程,对几种综采机电维修故障诊断进行了分析,综采机电维修故障诊断技术不仅能够及时发现综采机电工作中存在的问题,而且还能够提高综采机电工作效率,保证煤矿开采的顺利进行。通过对综采机电维修故障诊断技术的研究,以期保证综采机电维修的顺利进行,及时解决存在的故障,由此获得更高的经济效益。

  11. 3D 打印技术在大型铸锻件领域应用的可行性分析%Feasibility Analysis of 3 D Print Technology Applied in Heavy Casting and Forging

    Institute of Scientific and Technical Information of China (English)

    门正兴; 李其; 郑旭; 徐文金; 杜青泉

    2015-01-01

    根据目前3D打印技术在我国大型铸锻件行业的发展现状,对3D打印在大型铸锻件领域的发展方向进行了预测。分析了金属和非金属3D打印技术在各自领域应用的优点和存在的问题。%In accordance with the developing status of 3D print technology in the field of current heavy casting and forging industry in China, the development direction of 3D print technology in heavy casting and forging has been fore-casted.Meanwhile, the advantage and existed problems of 3D print technology for metal and non-metal applied in re-spective field have been analyzed.

  12. Ceramic Technology Project

    Energy Technology Data Exchange (ETDEWEB)

    1992-03-01

    The Ceramic Technology Project was developed by the USDOE Office of Transportation Systems (OTS) in Conservation and Renewable Energy. This project, part of the OTS's Materials Development Program, was developed to meet the ceramic technology requirements of the OTS's automotive technology programs. Significant accomplishments in fabricating ceramic components for the USDOE and NASA advanced heat engine programs have provided evidence that the operation of ceramic parts in high-temperature engine environments is feasible. These programs have also demonstrated that additional research is needed in materials and processing development, design methodology, and data base and life prediction before industry will have a sufficient technology base from which to produce reliable cost-effective ceramic engine components commercially. A five-year project plan was developed with extensive input from private industry. In July 1990 the original plan was updated through the estimated completion of development in 1993. The objective is to develop the industrial technology base required for reliable ceramics for application in advanced automotive heat engines. The project approach includes determining the mechanisms controlling reliability, improving processes for fabricating existing ceramics, developing new materials with increased reliability, and testing these materials in simulated engine environments to confirm reliability. Although this is a generic materials project, the focus is on the structural ceramics for advanced gas turbine and diesel engines, ceramic bearings and attachments, and ceramic coatings for thermal barrier and wear applications in these engines. To facilitate the rapid transfer of this technology to US industry, the major portion of the work is being done in the ceramic industry, with technological support from government laboratories, other industrial laboratories, and universities.

  13. Discussion on mechanical and electrical maintenance technology of coal mine%浅议煤矿机电设备维修技术

    Institute of Scientific and Technical Information of China (English)

    程燕妮

    2015-01-01

    该文从矿井在机电设备检测方面存在的问题谈起,阐述了矿井机电设备的维修技术、方法,重点论述矿井机电设备维修的改进,以保障煤矿机电设备维修管理工作的质量。%This paper discusses the problems of the mechanical and electrical equipment in the mine, and expounds the maintenance technology and method of the mechanical and electrical equipment, focus on the improvement of the mine mechanical and electrical equipment maintenance to protect the quality of the coal mine mechanical and electrical equipment maintenance.

  14. WERF MACT Feasibility Study Report

    Energy Technology Data Exchange (ETDEWEB)

    B. Bonnema; D. Moser; J. Riedesel; K. Kooda; K. Liekhus; K. Rebish; S. Poling

    1998-11-01

    This study was undertaken to determine the technical feasibility of upgrading the Waste Experimental Reduction Facility (WERF) at the Idaho National Engineering and Environmental Laboratory to meet the offgas emission limits proposed in the Maximum Achievable Control Technologies (MACT)rule. Four practicable offgas treatment processes were identified, which, if installed, would enable the WERF to meet the anticipated MACT emission limits for dioxins and furans (D/F), hydrochloric acid (HCI), and mercury (Hg). Due to the three-year time restraint for MACT compliance, any technology chosen for the upgrade must be performed within the general plant project funding limit of $5 M. The option selected consists of a partial-quench evaporative cooler with dry sorbent injection for HCI removal followed by a sulfur-impregnated activated carbon bed for Hg control. The planning cost estimate for implementing the option is $4.17 M (with 24% contingency). The total estimated cost includes capital costs, design and construction costs, and project management costs. Capital costs include the purchase of a new offgas evaporative cooler, a dry sorbent injection system with reagent storage, a new fabric filter baghouse, a fixed carbon bed absorber, and two offgas induced draft exhaust fans. It is estimated that 21 months will be required to complete the recommended modification to the WERF. The partial-quench cooler is designed to rapidly cool the offgas exiting the secondary combustion chamber to minimize D/F formation. Dry sorbent injection of an alkali reagent into the offgas is recommended. The alkali reacts with the HCI to form a salt, which is captured with the fly ash in the baghouse. A design HCI removal efficiency of 97.2% allows for the feeding 20 lbs/hr of chlorine to the WERF incinerator. The sorbent feed rate can be adjusted to achieve the desired HCI removal efficiency. A fixed bed of sulfur-impregnated carbon was conservatively sized for a total Hg removal capacity when

  15. BIM 技术在机电安装工程中的应用%Application of BIM technology in mechanical-electrical installation engineering

    Institute of Scientific and Technical Information of China (English)

    张兵

    2014-01-01

    简述了BIM技术的功能,结合劲松路2号院旧城改造项目,从BIM建模、设备管理、施工管理、运营维护管理方面阐述了BIM技术在机电安装工程中的实施方案,为BIM技术的推广应用提供了参考案例。%With a brief introduction of BIM technology functions,combining with old city transformation project on Jingsong road No. 2 court-yard,the paper describes BIM technology implementation scheme in mechanical-electrical installation engineering from aspects of BIM modeling, equipment management,construction management and operation maintenance management,which has provided some cases for BIM technology application.

  16. Causes, Effects of Stress and the Coping Mechanism of the Bachelor of Science in Information Technology Students in a Philippine University

    Directory of Open Access Journals (Sweden)

    Generoso N. Mazo

    2015-02-01

    Full Text Available The causes and levels of stress vary. The study of Information Technology is basically a rigorous one as it is designed to prepare students for the actual demands in the world of work. This study sought to determine the causes of stress, the effects of stress, and the stress coping mechanisms of Bachelor of Science in Information Technology students in the Leyte Normal University, Tacloban City. It tested some assumptions using the descriptive survey method with 51 respondents. Thesis writing/research and school requirements/projects were the most common causes of stress. Sleepless nights and irritable/moody feeling were the common effects of stress. There was disparity on the causes and effects of stress between the male and female respondents. The use of computer and praying to God were the common stress coping mechanisms. There was an observed disparity between the male and female responses.

  17. OPTIMIZATION OF TECHNOLOGY PERTAINING TO PROCESSING OF MECHANICALLY ALLOYED AND DISPERSIVELY HARDENED NICKEL-CHROMIUM COMPOSITIONS IN SEMI-FINISHED PRODUCTS

    Directory of Open Access Journals (Sweden)

    F. G. Lovshenko

    2010-01-01

    Full Text Available The paper investigates an influence of main technological factors pertaining to processing operations (annealing and hot-tempered  compaction of nano-structural mechanically alloyed granulated nickel-chromium compositions on the properties of highly strong compact semi-products with inter-metallide and oxide hardening. Optimization of the process, phase composition and structure of semi-products have been executed and investigated in the paper.

  18. Rock roadway complementary support technology in Fengfeng mining district

    Institute of Scientific and Technical Information of China (English)

    Zeng Xiantao; Jiang Yaodong; Jiang Cong; Ma Zhenqian; Zhan Shaojian; Zhang Kexue; He Changhai

    2014-01-01

    This paper takes No. 52 return uphill roadway of Yangquhe coal mine as a research project. Based on the research, especially its geological condition, indoor experiments, numerical simulation and theoretical analysis were employed to determine the difficult coefficients of Yangquhe project. By using these means, the difficult coefficients of the deep rock engineering were determined. From a study of the effects of crustal stress and the roof mechanism on roadway stability, the transformation mechanism in Yangquhe coal mine has been determined. As a result of this research, the interactive support technology of pre-stressed cable mesh was developed and the technology tested in mining engineering, which proved to be feasible.

  19. Engineering single-phonon number states of a mechanical oscillator via photon subtraction

    Science.gov (United States)

    Khan, M. Miskeen; Akram, M. Javed; Paternostro, M.; Saif, F.

    2016-12-01

    We introduce an optomechanical scheme for the probabilistic preparation of single-phonon Fock states of mechanical modes based on photosubtraction. The quality of the produced mechanical state is confirmed by a number of indicators, including phonon statistics and conditional fidelity. We assess the detrimental effect of parameters such as the temperature of the mechanical system and address the feasibility of the scheme with state-of-the-art technology.

  20. 金沙新区玉米全程机械化技术和玉米秸秆技术应用探讨%Application of full mechanization technology and corn straw technology in Jinsha new district

    Institute of Scientific and Technical Information of China (English)

    刘永兴

    2016-01-01

    In recent years, Jinsha has increased investments on corn harvesting machinery, introduced a variety of combine harvesters, and comprehensively promoted the management at all stages of corn planting and harvesting mechanization process, so as to ensure the completion of the job in the best period and improve the efficiency and effectiveness of corn production. This paper studied on main research methods and measures to promote corn straw returning technology in Jinsha new district through the level of technology, farm machinery and technology policy. Corn straw mechanized returning technology has characteristics of poor quality, poor quality of planting, nitrogen deficiency and pest disease, which should promote the development and application of corn straw returning technology.%近几年,金沙新区加大了玉米收获机械的投入力度,引进了多种联合收获机,全面推进了玉米种植各个阶段的管理及收获全程机械化进程,保证在最佳时期完成各项作业,提高了玉米生产的效率和效益。本文通过技术层面、农机具层面和技术政策层面,研究了金沙新区推进玉米秸秆还田技术的主要方法措施。玉米秸秆机械化还田存在还田质量差、播种质量差、争氮现象、病虫害严重等问题,应推进玉米秸秆还田技术的发展应用。

  1. Feasibility Research on Network Teaching of" Identification Technology of Chinese Medicine"%《中药鉴定技术》课程网络教学的可行性研究

    Institute of Scientific and Technical Information of China (English)

    贺媛媛

    2012-01-01

    "Identification Technology of Chinese Medicine" is a core course of the Chinese Medicine Specialty of our college. The main teaching goals is to make students have the abilities of using character-identification and microscopic-identification technology to identify the authenticity of pros and cons of the commonly-used Chinese Medicine and Pieces accurately. The paper pays attention to research of network teaching of the course on purpose to help students developing the abilities of character-identification and microscopic-identification technology, and facilitate the course teaching.%《中药鉴定技术》是我院中药专业一门核心专业课。课程教学的主要目标是使学生具备运用性状鉴定技术及显微鉴定技术快速准确地鉴定常用中药材及饮片的真伪优劣的能力。本文着重于课程的网络信息化教学的研究,主要是为了辅助学生性状鉴定及显微鉴定能力的培养,为《中药鉴定技术》的教学提供便利。

  2. 基于科技资源共享平台构建的几个关键问题探讨%Content,Channels,Coordination Mechanism,Motivation Mechanism and Influence Factors of Science and Technology Resources Sharing Platform

    Institute of Scientific and Technical Information of China (English)

    李莎

    2013-01-01

    科技共享资源的内容包括信息共享、设备及数据共享、人员流动共享和科研成果共享四类。现有的共享形式有知识网络平台及数据库、科技创新比赛和奖励、科技论坛和会议、地区或国际间科技合作和交流。共享的协调体系由共享主体和共享规则组成,共享的动力机制是构建科技资源共享体系的核心问题。成功推进共享实现的动力机制的关键在于合理解决共享的外部性问题和分担风险。管理体制、资金保障、信息渠道和人才管理均会影响共享效率。%Based on the scientific and technological resources sharing platform construction,technology sharing resources includes information sharing,equipment and data sharing,personnel flow and research results sharing. The form of sharing includes knowledge and database network platform,scientific and technological innovation competition and award,science and technology forums and conferences,regional or international science and technology cooperation and exchanges. The coordination of science and technology sharing system includes sharing subject analysis and sharing rules of construction.The core problem of promoting the science and technology resources sharing mechanism is to build momentum mechanism.The driving force of sharing mechanism is that the integrated use incentive devices to promote sharers share the benefits and bear the risk. The important influencing factors of sharing efficiency include management system,financial security,infor-mation channels and talent management.

  3. Enhancing mung bean hydration using the ultrasound technology: description of mechanisms and impact on its germination and main components

    Science.gov (United States)

    Miano, Alberto Claudio; Pereira, Jessica Da Costa; Castanha, Nanci; Júnior, Manoel Divino Da Matta; Augusto, Pedro Esteves Duarte

    2016-12-01

    The ultrasound technology was successfully used to improve the mass transfer processes on food. However, the study of this technology on the grain hydration and on its main components properties was still not appropriately described. This work studied the application of the ultrasound technology on the hydration process of mung beans (Vigna radiata). This grain showed sigmoidal hydration behavior with a specific water entrance pathway. The ultrasound reduced ~25% of the hydration process time. In addition, this technology caused acceleration of the seed germination – and some hypothesis for this enhancement were proposed. Moreover, it was demonstrated that the ultrasound did not change both structure and pasting properties of the bean starch. Finally, the flour rheological properties proved that the ultrasound increased its apparent viscosity, and as the starch was not modified, this alteration was attributed to the proteins. All these results are very desirable for industry since the ultrasound technology improves the hydration process without altering the starch properties, accelerates the germination process (that is important for the malting and sprouting process) and increases the flour apparent viscosity, which is desirable to produce bean-based products that need higher consistency.

  4. Enhancing mung bean hydration using the ultrasound technology: description of mechanisms and impact on its germination and main components.

    Science.gov (United States)

    Miano, Alberto Claudio; Pereira, Jessica da Costa; Castanha, Nanci; Júnior, Manoel Divino da Matta; Augusto, Pedro Esteves Duarte

    2016-12-19

    The ultrasound technology was successfully used to improve the mass transfer processes on food. However, the study of this technology on the grain hydration and on its main components properties was still not appropriately described. This work studied the application of the ultrasound technology on the hydration process of mung beans (Vigna radiata). This grain showed sigmoidal hydration behavior with a specific water entrance pathway. The ultrasound reduced ~25% of the hydration process time. In addition, this technology caused acceleration of the seed germination - and some hypothesis for this enhancement were proposed. Moreover, it was demonstrated that the ultrasound did not change both structure and pasting properties of the bean starch. Finally, the flour rheological properties proved that the ultrasound increased its apparent viscosity, and as the starch was not modified, this alteration was attributed to the proteins. All these results are very desirable for industry since the ultrasound technology improves the hydration process without altering the starch properties, accelerates the germination process (that is important for the malting and sprouting process) and increases the flour apparent viscosity, which is desirable to produce bean-based products that need higher consistency.

  5. Investigation of the feasibility of a small scale transmutation device

    Science.gov (United States)

    Sit, Roger Carson

    -lived fission products could result in an irradiation effective half-life of a few years with a three order magnitude increase in the on-target neutron flux accomplishable through a combination of technological enhancements to the source and system design optimization; (3) the transmutation of long-lived fission products requires a thermal-slow energy spectrum to prevent the generation of activation products with half-lives even longer than the original radionuclide; (4) there is no benefit in trying to transmute short-lived fission products due to the ineffectiveness of the transmutation process and the generation of a multiplicity of counterproductive activation products; (5) for actinides, irradiation effective half-lives of < 1 year can be achieved with a four orders magnitude increase in the on-target flux; (6) the ideal neutron energy spectra for transmuting actinides is highly dependent on the particular radionuclide and its fission-to-capture ratio as they determine the generationrate of other actinides; and (7) the methodology developed in this dissertation provides a mechanism that can be used for studying the feasibility of transmuting other radionuclides, and its application can be extended to studying the production of radionuclides of interest in a transmutation process. Although large-scale transmutation technology is presently being researched world-wide for spent fuel management applications, such technology will not be viable for a couple of decades. This dissertation investigated the concept of a small-scale transmutation device using present technology. The results of this research show that with reasonable enhancements, transmutation of specific radionuclides can be practical in the near term.

  6. Exploring Mechanisms for Effective Technology-Enhanced Simulation-based Education in Wilderness Medicine: A Systematic Review.

    Science.gov (United States)

    MacKinnon, Ralph; Aitken, Deborah; Humphries, Christopher

    2015-12-17

     Technology-enhanced simulation is well-established in healthcare teaching curricula, including those regarding wilderness medicine. Compellingly, the evidence base for the value of this educational modality to improve learner competencies and patient outcomes are increasing.  The aim was to systematically review the characteristics of technology-enhanced simulation presented in the wilderness medicine literature to date. Then, the secondary aim was to explore how this technology has been used and if the use of this technology has been associated with improved learner or patient outcomes.  EMBASE and MEDLINE were systematically searched from 1946 to 2014, for articles on the provision of technology-enhanced simulation to teach wilderness medicine. Working independently, the team evaluated the information on the criteria of learners, setting, instructional design, content, and outcomes.  From a pool of 37 articles, 11 publications were eligible for systematic review. The majority of learners in the included publications were medical students, settings included both indoors and outdoors, and the main focus clinical content was initial trauma management with some including leadership skills. The most prevalent instructional design components were clinical variation and cognitive interactivity, with learner satisfaction as the main outcome.  The results confirm that the current provision of wilderness medicine utilizing technology-enhanced simulation is aligned with instructional design characteristics that have been used to achieve effective learning. Future research should aim to demonstrate the translation of learning into the clinical field to produce improved learner outcomes and create improved patient outcomes.

  7. Flathead Renewable Energy Feasibility Study

    Energy Technology Data Exchange (ETDEWEB)

    Belvin Pete: Ed McCarthy; Krista Gordon; Chris Bergen; Rhett Good

    2006-10-03

    The study shall assess the feasibility of a commercial wind facility on lands selected and owned by the Salish and Kootenai Tribes and shall examine the potential for the development of solar and biomass resources located on Tribal Lands.

  8. The Analysis of Operating Mechanism Innovation in Science and Technology Museum%浅论科技博物馆运行机制的创新

    Institute of Scientific and Technical Information of China (English)

    许以则

    2013-01-01

    通过关注国内外科技博物馆的现状,以及世界科技博物馆的发展趋势,且从管理体制、运行经费筹建机制、人才使用机制、评估监督制度等诸方面阐述世界科技博物馆的运行机制,并借鉴发达国家的先进理念与成功经验,分析影响国内科技博物馆运行机制的关键问题,寻找存在的差距,寻求从中的启示,提出符合我国运行机制实况的对策建议。%By analyzing the current situation of the science and technology museum both in china and abroad ,and the trends of science technology museum all of the world, from management system ,funds, developing system, human re-sources, supervision system, to explain the operating mechanism of science and technology museum all of the world. As well as Learn from the advanced concept and experience of developed countries, discussing the question which affects operating mechanism of science and technology museum in China. Seeking the difference between the domestic and o-verseas and the revelation .to give suggestions for fitting the operating mechanism in our country.

  9. The mechanism of technological diversification promoting corporate performance%技术多元化促进企业绩效的机理研究

    Institute of Scientific and Technical Information of China (English)

    何郁冰

    2011-01-01

    技术多元化影响着企业产品创新战略的选择与绩效,但是既有文献并未对技术多元化影响企业绩效的机制进行研究,也较缺乏基于中国企业的实证分析.基于最新理论研究并结合实地调研结果,本研究从产品创新战略角度探讨了技术多元化对企业绩效的中介机制问题.研究结果发现,产品创新战略在技术多元化影响企业经营绩效过程中起完全中介作用,在技术多元化影响企业创新绩效过程中起部分中介作用.%Technological diversification has a impact on the choice of company' s product innovation strategy and its performance, however the existing literatures have not analyzed on how the mechanism of technological diversification impacts corporate performance; in the meantime, the relative empirical analysis based on Chinese companies are also lack.Based on the latest theoretical research and the results of on site research, the mediative mechanism betwee corporate technological diversification and its performance is studied from a angle of product innovation strategy.The empirical results suggest that poruct innovation strategy has completely played a mediative role in the impact of corporate technological diversification on its business performance, but only has played a partially mediative role in the impact of corporate technological diversification on its innovation performance.

  10. Multnomah County Hydrokinetic Feasibility Study: Final Feasibility Study Report

    Energy Technology Data Exchange (ETDEWEB)

    Spain, Stephen

    2012-03-15

    HDR has completed a study of the technical, regulatory, and economic feasibility of installing hydrokinetic turbines under the Morrison, Broadway, and Sellwood bridges. The primary objective of installing hydrokinetic turbines is a demonstration of in-stream hydrokinetic technologies for public education and outreach. Due to the low gradient of the Lower Willamette and the effects of the tide, velocities in the area in consideration are simply not high enough to economically support a commercial installation. While the velocities in the river may at times provide enough energy for a commercial turbine to reach capacity, the frequency and duration of high flow events which provide suitable velocities is not sufficient to support a commercial hydrokinetic installation. We have observed that over an 11 year period, daily average velocities in the Lower Willamette exceeded a nominal cut-in speed of 0.75 m/s only 20% of the time, leaving net zero power production for the remaining 80% of days. The Sellwood Bridge site was estimated to have the best hydrokinetic resource, with an estimated average annual production of about 9,000 kWh. The estimated production could range from 2,500 kWh to 15,000 kWh. Based on these energy estimates, the amount of revenue generated through either a power purchase agreement (PPA) or recovered through net metering is not sufficient to repay the project costs within the life of the turbine. The hydrokinetic resource at the Morrison and Broadway Bridges is slightly smaller than at the Sellwood Bridge. While the Broadway and Morrison Bridges have existing infrastructure that could be utilized, the project is not expected to generate enough revenue to repay the investment. Despite low velocities and energy production, the sites themselves are favorable for installation of a demonstration or experimental project. With high public interest in renewable energy, the possibility exists to develop a hydrokinetic test site which could provide

  11. Feasibility Study of Thin Film Thermocouple Piles

    Science.gov (United States)

    Sisk, R. C.

    2001-01-01

    Historically, thermopile detectors, generators, and refrigerators based on bulk materials have been used to measure temperature, generate power for spacecraft, and cool sensors for scientific investigations. New potential uses of small, low-power, thin film thermopiles are in the area of microelectromechanical systems since power requirements decrease as electrical and mechanical machines shrink in size. In this research activity, thin film thermopile devices are fabricated utilizing radio frequency sputter coating and photoresist lift-off techniques. Electrical characterizations are performed on two designs in order to investigate the feasibility of generating small amounts of power, utilizing any available waste heat as the energy source.

  12. Quantum Steering Inequality with Tolerance for Measurement-Setting Errors: Experimentally Feasible Signature of Unbounded Violation

    Science.gov (United States)

    Rutkowski, Adam; Buraczewski, Adam; Horodecki, Paweł; Stobińska, Magdalena

    2017-01-01

    Quantum steering is a relatively simple test for proving that the values of quantum-mechanical measurement outcomes come into being only in the act of measurement. By exploiting quantum correlations, Alice can influence—steer—Bob's physical system in a way that is impossible in classical mechanics, as shown by the violation of steering inequalities. Demonstrating this and similar quantum effects for systems of increasing size, approaching even the classical limit, is a long-standing challenging problem. Here, we prove an experimentally feasible unbounded violation of a steering inequality. We derive its universal form where tolerance for measurement-setting errors is explicitly built in by means of the Deutsch-Maassen-Uffink entropic uncertainty relation. Then, generalizing the mutual unbiasedness, we apply the inequality to the multisinglet and multiparticle bipartite Bell state. However, the method is general and opens the possibility of employing multiparticle bipartite steering for randomness certification and development of quantum technologies, e.g., random access codes.

  13. Men on the Move-Nashville: Feasibility and Acceptability of a Technology-Enhanced Physical Activity Pilot Intervention for Overweight and Obese Middle and Older Age African American Men.

    Science.gov (United States)

    Dean, Donnatesa A L; Griffith, Derek M; McKissic, Sydika A; Cornish, Emily K; Johnson-Lawrence, Vicki

    2016-04-19

    Men on the Move-Nashvillewas a quasi-experimental, 10-week pilot physical activity intervention. A total of 40 overweight or obese African American men ages 30 to 70 (mean age = 47) enrolled in the intervention. Participants attended 8 weekly, 90-minute small group sessions with a certified personal trainer. Each session consisted of discussions aimed to educate and motivate men to be more physically active, and an exercise component aimed to increase endurance, strength, and flexibility. Throughout each week, men used wearable activity trackers to promote self-monitoring and received informational and motivational SMS text messages. Of the 40 enrolled men, 85% completed the intervention, and 80% attended four or more small group sessions. Additionally, 70% of participants successfully used the activity tracker, but only 30% of men utilized their gym memberships. Participants benefited from both the small group discussions and activities through increasing social connection and guidance from their trainer and group members. These African American men reported being motivated to engage in physical activity through each of these technologies. Men reported that the activity trackers provided an important extension to their social network of physically active people. The intervention resulted in significant increases in men's self-reported levels of light, moderate, vigorous, and sports-related physical activities, and high-density lipoprotein cholesterol levels, and significant decreases in weight and body fat percentage with small, moderate and large effects shown. Including technology and didactic components in small group-based interventions holds promise in motivating African American men to increase their physical activity.

  14. The development of ShortWatch, a novel overtemperature or mechanical damage sensing technology for wires or cables. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Watkins, Ken; Morris, Jack; Wong, C.P.; Luo, Shijian

    2001-09-07

    'ShortWatch' is a patented technology which for the first time offers electrical wire/cable products providing real-time, 'in-situ' (1) condition monitoring that warns of insulation damage before an electrical fault occurs, (2) assessment of the ability to perform in a Design Basis event, (3) distributed sensor warning of overtemperature, and (4) insulation leakage measurement capability providing arc sensing and a reliable tool for wire age prediction.

  15. Business incubators as support mechanisms for the economic development: Case of Maringá's Technology Incubator

    Directory of Open Access Journals (Sweden)

    Fernanda Helen Mansano

    2016-04-01

    Full Text Available In an environment where competition is increasingly fierce, it is essential to create an innovation system, that ranges from basic research to the transfer of developments for the companies and the whole society. To verify this process, the most of the works are using the record number of patents as a proxy, given the difficulty of measuring new products, services and process for the market. Based in incubators of technology-based enterprises, in this article this problem was overcome, by measuring their products, services and processes. Thus, we developed this work with the main objective to assess whether there is interaction between the resident enterprises in technological incubator of Maringá, external companies and university.   The methodology includes a literature review on the subject, the development of variables related to incubator´s characteristics, the application of a questionnaire to the companies linked to Technological Incubator of Maringá, in order to verify the new products, services and process related to research that hit the market. The results point indicates the need for facilitating the process of innovation and interaction with university and industry by developed innovations.

  16. Feasibility of AmbulanCe-Based Telemedicine (FACT) Study : Safety, Feasibility and Reliability of Third Generation Ambulance Telemedicine

    NARCIS (Netherlands)

    Yperzeele, Laetitia; Van Hooff, Robbert-Jan; De Smedt, Ann; Espinoza, Alexis Valenzuela; Van Dyck, Rita; Van de Casseye, Rohny; Convents, Andre; Hubloue, Ives; Lauwaert, Door; De Keyser, Jacques; Brouns, Raf

    2014-01-01

    Background: Telemedicine is currently mainly applied as an in-hospital service, but this technology also holds potential to improve emergency care in the prehospital arena. We report on the safety, feasibility and reliability of in-ambulance teleconsultation using a telemedicine system of the third

  17. VIS-NIR spectroscopy as a process analytical technology for compositional characterization of film biopolymers and correlation with their mechanical properties.

    Science.gov (United States)

    Barbin, Douglas Fernandes; Valous, Nektarios A; Dias, Adriana Passos; Camisa, Jaqueline; Hirooka, Elisa Yoko; Yamashita, Fabio

    2015-11-01

    There is an increasing interest in the use of polysaccharides and proteins for the production of biodegradable films. Visible and near-infrared (VIS-NIR) spectroscopy is a reliable analytical tool for objective analyses of biological sample attributes. The objective is to investigate the potential of VIS-NIR spectroscopy as a process analytical technology for compositional characterization of biodegradable materials and correlation to their mechanical properties. Biofilms were produced by single-screw extrusion with different combinations of polybutylene adipate-co-terephthalate, whole oat flour, glycerol, magnesium stearate, and citric acid. Spectral data were recorded in the range of 400-2498nm at 2nm intervals. Partial least square regression was used to investigate the correlation between spectral information and mechanical properties. Results show that spectral information is influenced by the major constituent components, as they are clustered according to polybutylene adipate-co-terephthalate content. Results for regression models using the spectral information as predictor of tensile properties achieved satisfactory results, with coefficients of prediction (R(2)C) of 0.83, 0.88 and 0.92 (calibration models) for elongation, tensile strength, and Young's modulus, respectively. Results corroborate the correlation of NIR spectra with tensile properties, showing that NIR spectroscopy has potential as a rapid analytical technology for non-destructive assessment of the mechanical properties of the films.

  18. Resilient and Corrosion-proof Rolling Element Bearings Made from Ni-ti Alloys for Aerospace Mechanism Applications and the Ultimate Space Technology Development Platform

    Science.gov (United States)

    Dellacorte, Christopher

    2014-01-01

    The International Space Station provides a unique microgravity laboratory environment for research. The ISS also serves as an effective platform for the development of technologies and engineered solutions related to living and working in space. The space environment also challenges our capabilities related to lubrication and tribology. In this seminar, Dr. DellaCorte will review the basics of space mechanism tribology and the challenges of providing good lubrication and long-life in the harsh space environment. He will also discuss recent tribological challenges associated with the Solar Alpha Rotary Joint (SARJ) bearings and life support hardware that must operate under severe conditions that are literally out of this world. Each tribology challenge is unique and their solutions often result in new technologies that benefit the tribology community everywhere, even back on Earth

  19. Study on destressing technology for a roadway driven along goaf in a fully mechanized top-coal caving face

    Institute of Scientific and Technical Information of China (English)

    瞿群迪

    2003-01-01

    Based on the deformation characteristics of the roadways driven along goaf in fully mechanized top-coal caving faces, the author considers that it is the key to ensure the stability of surrounding rocks of roadway driven along goaf to control the deformation during the period affected by mining. Considering the characteristics of the roadway layout in fully mechanized top-coal caving faces, a technical scheme of destressing is put forward and the destressing effect is analyzed by using the software of Universal Distinct Element Code 3.0(UDEC 3.0).

  20. Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams

    Institute of Scientific and Technical Information of China (English)

    Jinhua Wang; Bin Yu; Hongpu Kang; Guofa Wang; Debing Mao; Yuntao Liang; Pengfei Jiang

    2015-01-01

    Thick and ultra-thick coal seams are main coal seams for high production rate and high efficiency in Chinese coal mines, which accounts for 44%of the total minable coal reserve. A fully mechanized top-coal caving mining method is a main underground coal extraction method for ultra-thick coal seams. The coal extraction technologies for coal seams less than 14 m thick were extensively used in China. However, for coal seams with thickness greater than 14 m, there have been no reported cases in the world for underground mechanical extraction with safe performance, high efficiency and high coal recovery ratio. To deal with this case, China Coal Technology&Engineering Group, Datong Coal Mine Group, and other 15 organizations in China launched a fundamental and big project to develop coal mining technologies and equipment for coal seams with thicknesses greater than 14 m. After the completion of the project, a coal extraction method was developed for top-coal caving with a large mining height, as well as a ground control theory for ultra-thick coal seams. In addition, the mining technology for top-coal caving with a large mining height, the ground support technology for roadway in coal seams with a large cross-section, and the prevention and control technology for gas and fire hazards were developed and applied. Furthermore, a hydraulic support with a mining height of 5.2 m, a shearer with high reliability, and auxiliary equipment were developed and manufactured. Practical implication on the technologies and equipment developed was successfully completed at the No. 8105 coal face in the Tashan coal mine, Datong, China. The major achievements of the project are summarized as follows:1. A top-coal caving method for ultra-thick coal seams is proposed with a cutting height of 5 m and a top-coal caving height of 15 m. A structural mechanical model of overlying strata called cantilever beam-articulated rock beam is established. Based on the model, the load resistance of the

  1. Report on the feasibility of construction and development of a flexible structure for the Lanaster wave power project

    Energy Technology Data Exchange (ETDEWEB)

    1979-09-01

    The report presented deals with the feasibility of manufacturing the 'Lancaster Loop' based on current technology and production facilities, and endeavours to assess the developments which can be anticipated and in some cases will be required in order to improve the integrity of the flexible structure and to facilitate its production. Characteristics leading to premature failure such as delamination and flex cracking have been thoroughly investigated and methods of improving life resulting from these investigations have been incorporated and proven on hovercraft. Methods of fabrication including bonding and mechanical joints have required intensive development to achieve the reliability necessary for commercial operation.

  2. Application of Automation Technology in Mechanical Manufacturing%自动化技术在机械制造方面的应用

    Institute of Scientific and Technical Information of China (English)

    周正

    2016-01-01

    自动化技术在机械制造方面应用十分广泛,已经成为工学机械类的一门学科,自动化技术对于提高机械制造的加工质量和生产效率具有重要作用。文章介绍了机械制造自动化的应用特征以及自动化技术应用的价值意义,重点介绍了现代化机械制造业中自动化技术的应用,包括:柔性自动化、集成化、虚拟化、智能化等。自动化技术将推动制造业和整个社会生产效率的提高,促进现代化加工和科学技术进步。%The automation technology is widely used in machinery manufacturing and has become a discipline of engineering machinery,which plays an important role in the improvement of machinery manufacturing processing quality and production effi-ciency.The article introduces the application of mechanical manufacturing automation features and application value of automation technology,the application of automation technology in modern machinery manufacturing industry,including:flexible automation, integration,virtualization,intelligent,etc.Automation technology will drive the manufacturing industry and production efficiency, and promote the modernization process and the progress of science and technology.

  3. Lower Sioux Wind Feasibility & Development

    Energy Technology Data Exchange (ETDEWEB)

    Minkel, Darin

    2012-04-01

    This report describes the process and findings of a Wind Energy Feasibility Study (Study) conducted by the Lower Sioux Indian Community (Community). The Community is evaluating the development of a wind energy project located on tribal land. The project scope was to analyze the critical issues in determining advantages and disadvantages of wind development within the Community. This analysis addresses both of the Community's wind energy development objectives: the single turbine project and the Commerical-scale multiple turbine project. The main tasks of the feasibility study are: land use and contraint analysis; wind resource evaluation; utility interconnection analysis; and project structure and economics.

  4. Normanskill Hydroelectric Facility Feasibility Assessment

    Energy Technology Data Exchange (ETDEWEB)

    Besha, J.A.

    1979-01-01

    A study was conducted to determine the feasibility of installing a hydroelectric generating facility at an existing dam of the Normanskill Reservoir in NY. Evaluation of the hydrologic, technical, economic, legal, instrumental and environmental factors led to the conclusion that the project is feasible and advantageous. The proposed project has a present worth net cost of $3,099,800. The benefit cost ratio is 2.36. It is estimated that the proposed hydroelectric generating facility at the French's Mills site, City of Watervliet Reservoir will replace approximately 6,000 barrels of foreign oil per year. (LCL)

  5. 有限元仿真在机械制造技术基础课程教学中的应用%Application of ifnite element simulation technology in teaching fundamentals of mechanical manufacturing technology

    Institute of Scientific and Technical Information of China (English)

    隋荣娟

    2014-01-01

    介绍了有限元软件ANSYS的基本功能和应用范围,以模拟金属的切削、挤压等过程为例,分析了有限元仿真模拟在机械制造技术基础课程教学中的应用。有限元仿真模拟应用于机械制造技术基础课程教学中,具有节约教学学时、提高教学质量等优点。%The basic function and application of the ifnite element software, ANSYS, is introduces. Taking the simulation of metal cutting and the extrusion process for example, the application of finite element simulation technology in teaching fundamentals of mechanical manufacturing technology is analyzed. The ifnite element simulation technology used in instruction can save the teaching hours, improve teaching quality, etc.

  6. EFFECT OF Fe2O3 ON WELDING TECHNOLOGY AND MECHANICAL PROPERTIES OF WELD METAL DEPOSITED BY SELF-SHIELDED FLUX CORED WIRE

    Institute of Scientific and Technical Information of China (English)

    Yu Ping; Pan Chuan; Xue Jin; Li Zhengbang

    2005-01-01

    Five experimental self-shielded flux cored wires are fabricated with different amount of Fe2O3 in the flux. The effect of Fe2O3 on welding technology and mechanical properties of weld metals deposited by these wires are studied. The results show that with the increase of Fe2O3 in the mix, the melting point of the pretreated mix is increased. LiBaF3 and BaFe12O19, which are very low in inherent moisture, are formed after the pretreatment. The mechanical properties are evaluated to the weld metals. The low temperature notch toughness of the weld metals is increased linearly with the Fe2O3 content in the flux due to the balance between Fe2O3 and residual Al in the weld metal. The optimum Fe2O3 content in flux is 2.5%~3.5 %.

  7. Cogeneration feasibility study in the Gulf States Utilities service area

    Energy Technology Data Exchange (ETDEWEB)

    1979-12-01

    Sites in the Gulf States Utilities service are considered for cogeneration feasibility studies. The sources of steam considered for the Orange, Texas and Geismar, Lake Charles, and North Baton Rouge, Louisiana sites include oil, coal, HTGR steamers, consolidated nuclear steam system, atmospheric fluidized-bed coal combustion, and coal gasification. Concepts concerning cogeneration fuel systems were categorized by technical applicability as: current technology (pulverized coal-fired boilers and fuel oil-fired boilers), advanced technology under development (HTGR steamers and the CNSS), and advanced technology for future development (atmospheric fluidized-bed boilers and coal gasification). In addition to providing data on cogeneration plant generally useful in the US, the study determined the technical and economic feasibility of steam and electric power cogeneration using coal and nuclear fuels for localized industrial complexes. Details on site selection, plant descriptions, cost estimates, economic analysis, and plant schedule and implementation. (MCW)

  8. Physico-mechanical and physico-chemical properties of synthesized cement based on plasma- and wet technologies

    Science.gov (United States)

    Sazonova, Natalya; Skripnikova, Nelli

    2016-01-01

    In this work we studied the influence of plasma-chemical technology of cement clinker synthesis under conditions of high-concentrated heat streams on the properties of cement on fixing such factors as raw-material type (chemical and mineralogical composition), fraction composition, homogenization and module characters of the raw-material mixture. In this connection the sludge of the cement plant in town Angarsk, based on which the cement clinker synthesis using the wet- and plasma-chemical technologies was performed, was used in the studies. The results of chemical X-ray-phase analysis, petrography of cement clinkers, differential scanning colorimetry of hardened cement paste are represented in this work. The analysis of building-technical properties of inorganic viscous substances was performed. It was found that in using the identical raw-material mixture the cement produced with temperature higher by 1650 °C than the traditional one may indicate the higher activity. The hardened cement paste compressive strength at the age of 28 days was higher than the strength of the reference samples by 40.8-41.4 %.

  9. Feasibility Study on a Microwave-Based Sensor for Measuring Hydration Level Using Human Skin Models.

    Directory of Open Access Journals (Sweden)

    Rico Brendtke

    Full Text Available Tissue dehydration results in three major types of exsiccosis--hyper-, hypo-, or isonatraemia. All three types entail alterations of salt concentrations leading to impaired biochemical processes, and can finally cause severe morbidity. The aim of our study was to demonstrate the feasibility of a microwave-based sensor technology for the non-invasive measurement of the hydration status. Electromagnetic waves at high frequencies interact with molecules, especially water. Hence, if a sample contains free water molecules, this can be detected in a reflected microwave signal. To develop the sensor system, human three-dimensional skin equivalents were instituted as a standardized test platform mimicking reproducible exsiccosis scenarios. Therefore, skin equivalents with a specific hydration and density of matrix components were generated and microwave measurements were performed. Hydration-specific spectra allowed deriving the hydration state of the skin models. A further advantage of the skin equivalents was the characterization of the impact of distinct skin components on the measured signals to investigate mechanisms of signal generation. The results demonstrate the feasibility of a non-invasive microwave-based hydration sensor technology. The sensor bears potential to be integrated in a wearable medical device for personal health monitoring.

  10. Geologic Features and Feasibility Test Technologies of Guizhou Qianbei Pinewood Molybdenum-Nickel Minerals%贵州黔北松林钼镍矿地质特征及可行性试验技术

    Institute of Scientific and Technical Information of China (English)

    沈大兴; 杨山福; 樊正烈; 王安科

    2015-01-01

    贵州松林钼镍矿主要产于下寒武统牛蹄塘组(∈1n)底部“磷块岩(上磷层)之上的金属层”,已有多年钼镍矿的开发历史,结合矿石的结构构造和矿石类型,采用镍钼矿→回转窖焙烧→碱浸→除杂→离子交换→酸沉→烘干→钼酸铵工艺生产钼酸铵产品,同时采用富镍渣→制粒→熔炼→低镍锍工艺处理浸出渣生产低镍锍,并使弃渣无害化,这对区内钼矿开发一定会取得良好的经济效益和社会效益。%The Guizhou Pinewood molybdenum-nickel minerals are chiefly generated on “a metal layer above the phosphorite (upper phosphor layer)” at the bottom of the lower Cambrian Niutitang formation (∈1n). It has many years of molybdenum-nickel minerals-developing history. Ammonium molybdate products are produced with such process as molybdenum minerals→rotary kiln roasting→alkaline leaching→decontamination→ion exchange→acid precipitation→drying-ammonium molybdate production technology and meantime low-nickel mattes are produced by dealing with the leaching residues through the process of preparing nickel-rich residues→pelletizing→smelting based on ore structures and types. In addition, the waste slag is made harmless. This will undoubtedly bring economic and social benefits to the exploration of molybdenum-nickel minerals.

  11. Feasibility analysis of recycling radioactive scrap steel

    Energy Technology Data Exchange (ETDEWEB)

    Nichols, F. [Manufacturing Sciences Corp., Woodland, WA (United States); Balhiser, B. [MSE, Inc., Butte, MT (United States); Cignetti, N. [Cignetti Associates, North Canton, OH (United States)] [and others

    1995-09-01

    The purpose of this study is to: (1) establish a conceptual design that integrates commercial steel mill technology with radioactive scrap metal (RSM) processing to produce carbon and stainless steel sheet and plate at a grade suitable for fabricating into radioactive waste containers; (2) determine the economic feasibility of building a micro-mill in the Western US to process 30,000 tons of RSM per year from both DOE and the nuclear utilities; and (3) provide recommendations for implementation. For purposes of defining the project, it is divided into phases: economic feasibility and conceptual design; preliminary design; detail design; construction; and operation. This study comprises the bulk of Phase 1. It is divided into four sections. Section 1 provides the reader with a complete overview extracting pertinent data, recommendations and conclusions from the remainder of the report. Section 2 defines the variables that impact the design requirements. These data form the baseline to create a preliminary conceptual design that is technically sound, economically viable, and capitalizes on economies of scale. Priorities governing the design activities are: (1) minimizing worker exposure to radionuclide hazards, (2) maximizing worker safety, (3) minimizing environmental contamination, (4) minimizing secondary wastes, and (5) establishing engineering controls to insure that the plant will be granted a license in the state selected for operation. Section 3 provides details of the preliminary conceptual design that was selected. The cost of project construction is estimated and the personnel needed to support the steel-making operation and radiological and environmental control are identified. Section 4 identifies the operational costs and supports the economic feasibility analysis. A detailed discussion of the resulting conclusions and recommendations is included in this section.

  12. Study of the mechanical stability and bioactivity of Bioglass(®) based glass-ceramic scaffolds produced via powder metallurgy-inspired technology.

    Science.gov (United States)

    Boccardi, Elena; Melli, Virginia; Catignoli, Gabriele; Altomare, Lina; Jahromi, Maryam Tavafoghi; Cerruti, Marta; Lefebvre, Louis-Philippe; De Nardo, Luigi

    2016-02-02

    Large bone defects are challenging to heal, and often require an osteoconductive and stable support to help the repair of damaged tissue. Bioglass-based scaffolds are particularly promising for this purpose due to their ability to stimulate bone regeneration. However, processing technologies adopted so far do not allow for the synthesis of scaffolds with suitable mechanical properties. Also, conventional sintering processes result in glass de-vitrification, which generates concerns about bioactivity. In this work, we studied the bioactivity and the mechanical properties of Bioglass(®) based scaffolds, produced via a powder technology inspired process. The scaffolds showed compressive strengths in the range of 5-40 MPa, i.e. in the upper range of values reported so far for these materials, had tunable porosity, in the range between 55 and 77%, and pore sizes that are optimal for bone tissue regeneration (100-500 μm). We immersed the scaffolds in simulated body fluid (SBF) for 28 d and analyzed the evolution of the scaffold mechanical properties and microstructure. Even if, after sintering, partial de-vitrification occurred, immersion in SBF caused ion release and the formation of a Ca-P coating within 2 d, which reached a thickness of 10-15 μm after 28 d. This coating contained both hydroxyapatite and an amorphous background, indicating microstructural amorphization of the base material. Scaffolds retained a good compressive strength and structural integrity also after 28 d of immersion (6 MPa compressive strength). The decrease in mechanical properties was mainly related to the increase in porosity, caused by its dissolution, rather than to the amorphization process and the formation of a Ca-P coating. These results suggest that Bioglass(®) based scaffolds produced via powder metallurgy-inspired technique are excellent candidates for bone regeneration applications.

  13. 公司科技体制机制改革问题探讨%Issues Related to Reform of Corporate Technological Structuring Mechanism

    Institute of Scientific and Technical Information of China (English)

    赵明

    2016-01-01

    The reform of structuring mechanism of the State-owned enterprises is now under the critical stage. From the angle of the State, the reform should be focused on classiifed management of enterprises, return to the economic nature, establishment of modern corporate system, adoption of mixed ownership and capital diversiifcation, and implementation of market-based corporate system for business management. The reform of technological restructuring mechanism should be focused on such areas as promoting marketization of technological sector, establishing the stimulation mechanism for innovation and increase of efifciency, and making full use of employees’ internal enthusiasm for innovation. The reform of restructuring mechanism of CNPC aims at further integration and restructuring of non-listed service businesses, such as engineering technology, engineering construction and equipment manufacturing, while striving for oil and gas industrial development. Those businesses will be brought under corporate system and mixed ownerships and listed on the stock market at an appropriate time for marketization. There are some options for the reform of corporate technological structuring mechanism, such as continual implementation of the two-way mixed management pattern, corporate management system suitable for the headquarters and service enterprises and establishment of the mechanism for operating technological research unit on a company basis.%国企体制机制改革进入关键时期,从国家层面看,改革重点是企业分类管理,回归经济本质,建立现代企业制度,走混合所有、资本多元化道路,实现市场化公司制经营管理;科技体制机制改革主要是推进科技领域市场化,建立搞活人才创新创效激励机制,充分发挥万众创新的内在积极性。中国石油天然气集团公司体制机制改革的重点方向,将是在努力发展油气产业同时,进一步对未上市的工程技术、工程建

  14. Mechanical properties of QFP micro-joints soldered with lead-free solders using diode laser soldering technology

    Institute of Scientific and Technical Information of China (English)

    HAN Zong-jie; XUE Song-bai; WANG Jian-xin; ZHANG Xin; ZHANG Liang; YU Sheng-lin; WANG Hui

    2008-01-01

    Soldering experiments of quad flat package(QFP) devices were carried out by means of diode laser soldering system with Sn-Ag-Cu and Sn-Cu-Ni lead-free solders, and competitive experiments were also carried out not only with Sn-Pb eutectic solders but also with infrared reflow soldering method. The results indicate that under the conditions of laser continuous scanning mode as well as the fixed laser soldering time, an optimal power exists, while the optimal mechanical properties of QFP micro-joints are gained. Mechanical properties of QFP micro-joints soldered with laser soldering system are better than those of QFP micro-joints soldered with IR reflow soldering method. Fracture morphologies of QFP micro-joints soldered with laser soldering system exhibit the characteristic of tough fracture, and homogeneous and fine dimples appear under the optimal laser output power.

  15. A Study of the Mechanism of Customer Value Creation Integrating Market Needs and Technological Seeds in Product Innovation

    OpenAIRE

    岩間, 仁

    2009-01-01

    Based upon in-depth case studies of pioneering products by Japanese manufactures including Japanese word processor as a pilot case and additional nine products, a new process model was introduced to better understand the mechanism of creating customer value integrating needs and seeds in product innovation. The process model revealed that the traditional needs-pull or seeds-push dichotomy as the driver of product innovation can be sublated by “customer value-driven”, and ambiguous concept of ...

  16. 7 CFR 4279.150 - Feasibility studies.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 15 2010-01-01 2010-01-01 false Feasibility studies. 4279.150 Section 4279.150... § 4279.150 Feasibility studies. A feasibility study by a qualified independent consultant may be required... affect the borrower's operations. An acceptable feasibility study should include, but not be limited...

  17. ON SOME FEASIBILITY CONDITIONS IN MPEC

    Institute of Scientific and Technical Information of China (English)

    Zhou Shuzi; Bai Minru

    2008-01-01

    This article discusses feasibility conditions in mathematical programs with equilibrium constraints (MPECs). The authors prove that two sufficient conditions guar- antee the feasibility of these MPECs. The authors show that the two feasibility conditions are different from the feasibility condition in [2,3], and show that the sufficient condition in [3] is stronger than that in [2].

  18. Exploring Transduction Mechanisms of Protein Transduction Domains (PTDs in Living Cells Utilizing Single-Quantum Dot Tracking (SQT Technology

    Directory of Open Access Journals (Sweden)

    Yasuhiro Suzuki

    2012-01-01

    Full Text Available Specific protein domains known as protein transduction domains (PTDs can permeate cell membranes and deliver proteins or bioactive materials into living cells. Various approaches have been applied for improving their transduction efficacy. It is, therefore, crucial to clarify the entry mechanisms and to identify the rate-limiting steps. Because of technical limitations for imaging PTD behavior on cells with conventional fluorescent-dyes, how PTDs enter the cells has been a topic of much debate. Utilizing quantum dots (QDs, we recently tracked the behavior of PTD that was derived from HIV-1 Tat (TatP in living cells at the single-molecule level with 7-nm special precision. In this review article, we initially summarize the controversy on TatP entry mechanisms; thereafter, we will focus on our recent findings on single-TatP-QD tracking (SQT, to identify the major sequential steps of intracellular delivery in living cells and to discuss how SQT can easily provide direct information on TatP entry mechanisms. As a primer for SQT study, we also discuss the latest findings on single particle tracking of various molecules on the plasma membrane. Finally, we discuss the problems of QDs and the challenges for the future in utilizing currently available QD probes for SQT. In conclusion, direct identification of the rate-limiting steps of PTD entry with SQT should dramatically improve the methods for enhancing transduction efficiency.

  19. Feasibility Assessment of Cesium Removal using Microaglae

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ilgook; Ryu, Byung-Gon; Seo, Bum-Kyoung; Moon, Jei Kwon; Choi, Jong-Won [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2016-10-15

    The aim of this work is to assess the feasibility of selected one of microalgae in the uptake of Cs+. The obtained results showed the maximum Cs+ removal by D. armatus SCK was 280μM indicating 70% removal efficiency. Also, D. armatus SCK could uptake Cs+ in the presence of K+, is particularly known to be transported into cells as an analog of Cs+ in freshwater condition. Recently, increased attention has been directed on the use of biological technologies for the removal of radionuclides as the cheap and eco-friendly alternative to the non-biological methods. Metal including radioactive compounds uptake by microorganisms can be occurred by metabolism –independent and/or -dependent processes. One involves biosorption based on the ability of microbial cells to bind dissolved metals; on the other involves bioaccumulation, which depends on the metabolic ability of cells to transport metals into the cytoplasm. The purpose of this work is to investigate the feasibility of microalgae in bioaccumulation system to remove cesium from solution. The effect of different environmental parameters on cesium removal was also examined.

  20. Enhancing agricultural mechanization level through information technology%信息技术提升农业机械化水平

    Institute of Scientific and Technical Information of China (English)

    罗锡文; 廖娟; 邹湘军; 张智刚; 周志艳; 臧英; 胡炼

    2016-01-01

    Since 1978, great progress has been achieved in Chinese agriculture. However, the problems still exist in the development process, such as low labor productivity, high production cost, low land productivity, low yield, low rate of resource utilization and lacking international competitiveness of agricultural products. One important reason for these problems lies in the low agricultural mechanization level in China. The informationization of agricultural machinery is a fundamental way to enhance agricultural mechanization level. In order to keep the sustained growth of agricultural mechanization level and accomplish the agricultural sustainable development in China, it is critical to take full advantages of advanced information technology to improve the design, manufacturing, operation and management of agricultural machinery, and then to enhance the level of agricultural mechanization. This paper mainly introduced: 1) The key information technologies for agricultural machinery design: parametric design, agricultural machinery product design based on knowledge engineering, and concurrent and collaborative design based on product data management; 2) The key information technologies for agricultural machinery manufacturing: flexible manufacturing, computer integrated manufacturing, and virtual and network manufacturing; 3) The key information technologies for agricultural machinery operation: agricultural information acquisition, agricultural machinery navigation, and field management; 4) The key information technologies for agricultural machinery management: agricultural machinery management, and agricultural machinery scheduling. The deficiencies of current information technologies were analyzed, the development trend was summarized for the countries all over the world, and the core issues of enhancing the agricultural mechanization level in China for present information technologies were proposed. In order to further enhance the level of agricultural mechanization

  1. Survey report of FY 1997 on the feasibility of microbial biotechnology for reuse of environmental pollutants; 1997 nendo chosa hokokusho (kankyo osen busshitsu no shigenka no tame no biseibutsu bio technology no riyo kanosei chi kansuru chosa)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    An investigation was conducted with the aim of elucidating the foundations for effective utilization of environmental pollutants or unused resources which are likely to be causal substances of environmental pollutants, as resources, using biotechnology. Composting of agricultural waste, production of microbial mycelium proteins and microbial fermentation materials were suggested as main examples of effective utilization of unused resources by microorganisms. Selection of active microorganisms in the livestock waste, clarification of the mechanism of action and the establishment of treatment conditions are essential to new developments in this field. In the field of marine products industry, it was pointed out that the recycling of waste using microorganisms and enzyme treatment is the most promising approach to the effective utilization of resources. In the field of food industry, applications as the culture media for mushrooms, for enzyme production and for the production of physiologically active materials as well as fuel were clarified. Was also pointed out the significance of studies on the microorganisms and enzymes in resources containing cellulose, hemicellulose and lignin, and the waste from these resources, lignocellulose. Were also proposed the composting of household waste, methane fermentation, and fermentative production of organic acid and hydrogen from waste. Possibility and significance of fermentative production of organic acid from sewage sludge were suggested. 314 refs., 46 figs., 33 tabs.

  2. 磁分离技术在水处理中的研究现状及开发钢渣磁种的可行性%Research Status of Magnetic Separation Technology in Water Treatment and the Feasibility of Developing Steel Slag as Magnetic Seed

    Institute of Scientific and Technical Information of China (English)

    汪玉娇; 高国才; 郭华

    2014-01-01

    简述磁分离技术的基本原理,总结国内磁分离技术在水处理中的研究现状,主要有含油废水、印染废水、含重金属离子废水以及含磷废水等,并指出磁种的选择在磁分离技术发展中的重要性,现有的新型磁种有炼钢厂排放的烟尘和气溶胶凝聚物、粉煤灰等,以此为基础分析了钢渣的磁性质以及作为新型廉价磁种的可行性。%The basic principle of magnetic separation technology was briefly described.The research sta-tus of magnetic separation technology in water treatment-including oil-bearing wastewater,printing and dyeing wastewater,heavy metal ion-bearing wastewater and phosphorus wastewater,etc,were summarized in the do-mestic.The importance of choosing magnetic seed in the development of magnetic separation technology was pointed out.Study on new magnetic seed such as soot and aerosols condensate emitted by steel plant,fly ash, etc.has exited,on basis of that the magnetic properties of the steel slag as well as the feasibility of the new low-priced magnetic seed were analyzed.

  3. Application of ANSYS Structure Optimization Technology in Mechanical Design%ANSYS结构优化技术在机械设计中的应用

    Institute of Scientific and Technical Information of China (English)

    曾志华; 虞伟建

    2011-01-01

    介绍了ANSYS优化设计模块,并针对机械结构优化设计给出了具体设计步骤.用实例研究了结构优化设计在ANSYS上实现的基本思想及主要步骤.证明了用ANSYS优化分析功能实现结构优化分析的可行性,从而为其他复杂结构的优化分析提供了新的方法和依据,为从事机械优化设计人员提供了新的方法和思路.%ANSYS optimization design model is introduced, and the concrete design steps for mechanical structure optimization are given out.Basic thought and key steps is introduced to realize structure optimization design on ANSYS with the instance, which proves the feasibility of ANSYS optimized analysis function to realize the structure optimization analysis.So that the new method is provided to the optimized analysis for the other complicated structures.New methods and thinking are provided for designer engaged in this aspect.

  4. Feasibility of Integrated Insulation in Rammed Earth

    Science.gov (United States)

    Stone, C.; Balintova, M.; Holub, M.

    2015-11-01

    Building Codes in Europe stipulate strict thermal performance criteria which any traditional rammed earth recipe cannot meet. This does not infer that the material itself is inferior; it has many other face saving attributes such as low embodied energy, high workability, sound insulation, fire resistance, aesthetics, high diffusivity and thermal accumulation properties. Integrated insulation is experimented with, to try achieve a 0.22 [W/(m2.K)] overall coefficient of heat transfer for walls required by 2015 Slovak standards, without using external insulation or using technologically complex interstitial insulation. This has the added aesthetic benefit of leaving the earth wall exposed to the external environment. Results evaluate the feasibility of this traditional approach.

  5. The CLIC feasibility demonstration in CTF3

    CERN Document Server

    Skowroński, P K; Bettoni, S; Constance, B; Corsini, R; Divall Csatari, M; Dabrowski, A E; Doebert, S; Dubrovskiy, A; Kononenko, O; Olvegaard, M; Persson, T; Rabiller, A; Tecker, F; Farabolini, W; Lillestol, R L; Adli, E; Palaia, A; Ruber, R

    2011-01-01

    The objective of the CLIC Test Facility CTF3 is to demonstrate the feasibility issues of the CLIC two-beam technology: the efficient generation of a very high current drive beam, used as the power source to accelerate the main beam to multi-TeV energies with gradients of over 100 MeV/m, and stable drive beam deceleration. Results of successful beam acceleration with over 100 MeV/m energy gain are shown. Measurements of drive beam deceleration over a chain of Power Extraction Structures (PETS) are presented. The achieved RF power levels, the stability of the power production and of the deceleration are discussed. Finally, we give an overview of the remaining issues to be addressed by the end of 2011.

  6. Feasibility study of a 200 ampere battery

    Science.gov (United States)

    Baldwin, A. R.

    1991-06-01

    The results of a Sandia National Laboratories program to design and develop a high-current thermal battery for the Hypersonic Weapons Technology Program are presented. The feasibility of a 200 A, 150 s, 12 Vdc primary battery was demonstrated under ambient conditions. New header feedthrough design concepts were used, and new internal current collectors and internal power leads were considered. The Li(Si)/LiBr-LiCl-LiF/FeS2 electrochemical system has shown exceptional performance at the high-current operation conditions. A high-rate Zinc/Silver Oxide secondary cell was also evaluated, and the results are presented in this report. These cells exhibited excellent high-rate discharge performance.

  7. [Agricultural products handling: methods of feasibility evaluation].

    Science.gov (United States)

    Scott, G J; Herrera, J E

    1993-06-01

    Post-harvest problems are important constraints to the expansion of production of food in many Latin American countries. Besides problems of bulkiness, perishability and seasonal production patterns, the necessity of reducing transportation costs, increasing rural employment, and finding new markets for processed products, requires the development of processing technologies. Possible processed products include a vast range of alternatives. Given limited time and resources, it is not always feasible to carry out detailed studies. Hence a practical, low-cost methodology is needed to evaluate the available options. This paper presents a series of methods to evaluate different processing possibilities. It describes in detail each method including a rapid initial assessment, market and consumer research, farm-oriented research, costs and returns analysis and finally, some marketing and promotion strategies.

  8. The Development Mechanism and the Technical Characteristics of the Modern Cutting Technology%现代切削技术的发展机制及技术特征

    Institute of Scientific and Technical Information of China (English)

    赵炳桢

    2006-01-01

    The development mechanism and mode and the new technical characteristics of the modern cutting technology are studied and analyzed. It is presented that to speed up the development of cutting technology and fully use the good-quality technical resource of cutting tool have the significant meaning for construction of powerful manufacturing industry of China.

  9. The feasibility of a permeable reactive barrier to treat acidic sulphate ...

    African Journals Online (AJOL)

    2006-04-02

    Apr 2, 2006 ... Treatment of this water is therefore necessary before discharge. In situ passive ... conventional treatment technologies for acidic groundwater. Feasibility criteria ..... 112 351-359. SRK (2001) Status Quo Report for Waste Sites.

  10. The influence of the cutting density on the magnetic properties of non-oriented electrical steels cut through mechanical punching and water jet technologies

    Science.gov (United States)

    Paltanea, V.; Paltanea, G.; Gavrila, H.; Popovici, D.; Jiga, G.

    2017-02-01

    The use of high quality non-oriented electrical steel and of an innovative design for the magnetic cores of the electrical machines are very important, in order to minimize the value of the total energy losses. The energy losses are strongly influenced by the cutting technologies, and the producers of the electrical machines want to minimize the deterioration of the magnetic properties during the manufacturing process. The influence of the cutting density on the magnetic permeability and energy losses was analyzed and one can notice that these magnetic properties are strongly influenced by the cutting technologies. There were tested sheet samples of M400-50A and M700-50A industrial steel grades (thickness of 0.50 mm), cut through mechanical and water jet technologies. All samples have the length equal to 300 mm and the width of 30, 15, 10, 7.5 and 5 mm. The magnetic characterization was performed using a laboratory single strip tester, which can make measurements on samples with an area of 300 × 30 mm2. In order to have the standard width of 30 mm, there were put together side by side 2, 3, 4 and 6 pieces with different widths. The magnetic properties were analyzed at 1000 mT in the frequency range 10 ÷ 400 Hz. It was observed that the processing conditions must be controlled and optimized, in order to maintain a low deterioration of the magnetic properties of the non-oriented steels. In the case of water jet technology an increase of the cutting speed will be useful for the introduction of this method in the large scale manufacturing of the electrical machines.

  11. 国际贸易技术溢出的机制分析%The Research on Mechanism of International trade's technology spillovers

    Institute of Scientific and Technical Information of China (English)

    李有

    2012-01-01

    深入分析了国际贸易技术溢出的具体机制。在短期,由于较低的机会成本和企业对技术、资本品和中间产品选择范围的扩大,技术引进、资本品和中间产品的进口可以立即带来生产率的增长。在长期,国际贸易主要通过两种类型的学习效应和竞争效应带来生产率的增长。完善的经济体制、国际贸易的规模、人力资本水平、技术差距是影响国际贸易技术溢出效应的主要因素。%This paper studies deeply the specific mechanism of international trade's technology spillovers.In the short term,because the lower opportunity cost and the expansion in either the variety or the quality of intermediate inputs,capital goods and technology,the imports of technology、capital goods and intermediate products may bring the growth of productivity immediately.In the long term,international trade promotes the growth of productivity mainly through the competition effect and two kinds of learning effects.The perfect economic system,the size of international trade,human capital and the technological gap are main influencing factors of international trade's technology spillovers.

  12. Recent technological advances in sound-based approaches to tinnitus treatment: a review of efficacy considered against putative physiological mechanisms.

    Science.gov (United States)

    Hoare, Derek J; Adjamian, Peyman; Sereda, Magdalena; Hall, Deborah A

    2013-01-01

    The past decade has seen an escalating enthusiasm to comprehend chronic tinnitus from the perspective of both scientific understanding and clinical management. At the same time, there is a significant interest and commercial investment in providing targeted and individualized approaches to care, which incorporate novel sound-based technologies, with standard audiological and psychological strategies. Commercially produced sound-based devices for the tinnitus market include Co-ordinated Reset Neuromodulation ® , Neuromonics © , Serenade ® , and Widex ® Zen. Additionally, experimental interventions such as those based on frequency-discrimination training are of current interest. Many of these interventions overtly claim to target the underlying neurological causes of tinnitus. Here, we briefly summarize current perspectives on the pathophysiology of tinnitus and evaluate claims made by the device supporters from a critical point of view. We provide an opinion on how future research in the field of individualized sound-based interventions might best provide a reliable evidence-base in this growing area of translational medicine.

  13. Recent technological advances in sound-based approaches to tinnitus treatment: A review of efficacy considered against putative physiological mechanisms

    Directory of Open Access Journals (Sweden)

    Derek J Hoare

    2013-01-01

    Full Text Available The past decade has seen an escalating enthusiasm to comprehend chronic tinnitus from the perspective of both scientific understanding and clinical management. At the same time, there is a significant interest and commercial investment in providing targeted and individualized approaches to care, which incorporate novel sound-based technologies, with standard audiological and psychological strategies. Commercially produced sound-based devices for the tinnitus market include Co-ordinated Reset Neuromodulation ® , Neuromonics © , Serenade ® , and Widex ® Zen. Additionally, experimental interventions such as those based on frequency-discrimination training are of current interest. Many of these interventions overtly claim to target the underlying neurological causes of tinnitus. Here, we briefly summarize current perspectives on the pathophysiology of tinnitus and evaluate claims made by the device supporters from a critical point of view. We provide an opinion on how future research in the field of individualized sound-based interventions might best provide a reliable evidence-base in this growing area of translational medicine.

  14. Synthesis of research and development in mechanical energy storage technologies. Progress report, September 1, 1979-May 31, 1980

    Energy Technology Data Exchange (ETDEWEB)

    Karadi, G M

    1980-05-31

    The proposed continuation project is restricted to underground energy storage and includes: underground pumped hydro storage (UPH); second generation compressed air energy storage (CAES); and seasonal aquifer thermal energy storage (SATES). In the economic assessment component of the proposed study superconducting magnetic energy storage (SMES) will also be included for the purposes of economic comparison only. Within the scope of the proposed effort the following specific objectives have been identified: continuation of extensive analysis of technical and economic information in the form of published and unpublished papers, reports and personal communication, synthesis and critical evaluation of the above information; continuation of the comprehensive analysis of Underground Energy Storage Project activities (updating results obtained in the first year of the project); updating and development of information to provide timely input on the progress to TMS staff for planning purposes; identification of major technical, economic and institutional issues having adverse effect on commercialization and advancement of strategy for resolution; and updating of economic analyses of various storage technologies by the modified method developed during the first years. Progress in each of these efforts is discussed.

  15. The New Technology of Composite Materials Repairing by Light Wave

    Institute of Scientific and Technical Information of China (English)

    ZHAO Zhi-min; CHEN Yu-ming; YU Xiao-lei; WANG Le-xin

    2004-01-01

    The repairing of damaged composite materials becomes a hot research subject in the late 1990s.In this paper a new technology of repairing composite materials is given on the basis of our previous research.The light wave of 675nm transmitted by optical fiber is used as repairing light source,special repairable adhesive which can be stimulated by the light is adopted.By comparing the stiffness of the composite material before and after being damaged,it can be concluded that the mechanical property will not be changed with the feasible repairing technology.

  16. Technology maturity and technology development

    Energy Technology Data Exchange (ETDEWEB)

    Underhill, Gary K.; Carlson, Ronald A.; Clendinning, William A.; Erdos, Jozsef; Gault, John; Hall, James W.; Jones, Robert L.; Michael, Herbert K.; Powell, Paul H.; Riemann, Carl F.; Rios-Castellon, Lorenzo; Shepherd, Burchard P.; Wilson, John S.

    1976-01-01

    All of the work reported in the preceding chapters was performed in order to assess the technical, economic, and energetic feasibility of proceeding with more detailed studies of the geopressured geothermal resource. The preliminary conceptual design and costing activities represented the prime activity for component by component review of the maturity of the technology available for resource utilization facilities. The economics and energetics studies focussed attentions on the areas of major capital and energy investment; these results comprise a useful guide for focussing design in order to reduce initial and operations and maintenance costs and/or investment. The following presents a discussion of the primary technical problems identified.

  17. Muon Muon Collider: Feasibility Study

    Energy Technology Data Exchange (ETDEWEB)

    Gallardo, J.C.; Palmer, R.B.; /Brookhaven; Tollestrup, A.V.; /Fermilab; Sessler, A.M.; /LBL, Berkeley; Skrinsky, A.N.; /Novosibirsk, IYF; Ankenbrandt, C.; Geer, S.; Griffin, J.; Johnstone, C.; Lebrun, P.; McInturff, A.; Mills, Frederick E.; Mokhov, N.; Moretti, A.; Neuffer, D.; Ng, K.Y.; Noble, R.; Novitski, I.; Popovic, M.; Qian, C.; Van Ginneken, A. /Fermilab /Brookhaven /Wisconsin U., Madison /Tel Aviv U. /Indiana U. /UCLA /LBL, Berkeley /SLAC /Argonne /Sobolev IM, Novosibirsk /UC, Davis /Munich, Tech. U. /Virginia U. /KEK, Tsukuba /DESY /Novosibirsk, IYF /Jefferson Lab /Mississippi U. /SUNY, Stony Brook /MIT /Columbia U. /Fairfield U. /UC, Berkeley

    2012-04-05

    A feasibility study is presented of a 2 + 2 TeV muon collider with a luminosity of L = 10{sup 35} cm{sup -2}s{sup -1}. The resulting design is not optimized for performance, and certainly not for cost; however, it does suffice - we believe - to allow us to make a credible case, that a muon collider is a serious possibility for particle physics and, therefore, worthy of R and D support so that the reality of, and interest in, a muon collider can be better assayed. The goal of this support would be to completely assess the physics potential and to evaluate the cost and development of the necessary technology. The muon collider complex consists of components which first produce copious pions, then capture the pions and the resulting muons from their decay; this is followed by an ionization cooling channel to reduce the longitudinal and transverse emittance of the muon beam. The next stage is to accelerate the muons and, finally, inject them into a collider ring wich has a small beta function at the colliding point. This is the first attempt at a point design and it will require further study and optimization. Experimental work will be needed to verify the validity of diverse crucial elements in the design. Muons because of their large mass compared to an electron, do not produce significant synchrotron radiation. As a result there is negligible beamstrahlung and high energy collisions are not limited by this phenomena. In addition, muons can be accelerated in circular devices which will be considerably smaller than two full-energy linacs as required in an e{sup +} - e{sup -} collider. A hadron collider would require a CM energy 5 to 10 times higher than 4 TeV to have an equivalent energy reach. Since the accelerator size is limited by the strength of bending magnets, the hadron collider for the same physics reach would have to be much larger than the muon collider. In addition, muon collisions should be cleaner than hadron collisions. There are many detailed particle

  18. The mechanically adaptive connective tissue of echinoderms: its potential for bio-innovation in applied technology and ecology.

    Science.gov (United States)

    Barbaglio, A; Tricarico, S; Ribeiro, A; Ribeiro, C; Sugni, M; Di Benedetto, C; Wilkie, I; Barbosa, M; Bonasoro, F; Candia Carnevali, M D

    2012-05-01

    Echinoderms possess unique connective tissues, called mutable collagenous tissues (MCTs), which undergo nervously mediated, drastic and reversible or irreversible changes in their mechanical properties. Connective tissue mutability influences all aspects of echinoderm biology and is a key-factor in the ecological success of the phylum. Due to their sensitivity to endogenous or exogenous agents, MCTs may be targets for a number of common pollutants, with potentially drastic effects on vital functions. Besides its ecological relevance, MCT represents a topic with relevance to several applied fields. A promising research route looks at MCTs as a source of inspiration for the development of novel biomaterials. This contribution presents a review of MCT biology, which incorporates recent ultrastructural, biomolecular and biochemical analyses carried out in a biotechnological context.

  19. Feasibility of Biomass Biodrying for Gasification Process

    Science.gov (United States)

    Hamidian, Arash

    and the pilot-scale continuous system was designed in 2010 to demonstrate the feasibility of mixed sludge biodrying for efficient combustion in biomass boilers. Mixed sludge was biodried in the reactor to 45% moisture level, which was the suitable level for boiler application. Techno-economic analysis also revealed the potential economic benefits for pulp and paper mills. However, considerable uncertainties existed in terms of feasibility of the biodrying technology for other types of biomass that are usually used in the gasification process, mainly because of low nutrient level of typical lignocellulosic biomass used as feedstock. Furthermore, the technology had not been shown to be economically viable in conjunction with gasification process at pulp and paper mills. In this work the feasibility of low-nutrient biomass biodrying was tested by experiments and techno-economic model was developed to identify the performance of biodrying process for commercial-scale application. In the economic analysis, a comprehensive approach for biodrying cost assessment was introduced that is based on the well-known approach widely used in the process industry and few sources of benefits were identified.

  20. Wireless Sensor Portal Technology Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Mobitrum Corporation has demonstrated the feasibility in the Phase I of " A Wireless Sensor Portal Technology" and proposes a Phase II effort to develop a wireless...