WorldWideScience

Sample records for live line maintenance

  1. 49 CFR 192.745 - Valve maintenance: Transmission lines.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Valve maintenance: Transmission lines. 192.745... TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Maintenance § 192.745 Valve maintenance: Transmission lines. (a) Each transmission line valve that might be required during any...

  2. The Effect of Line Maintenance Activity on Airline Safety Quality

    Science.gov (United States)

    Rhoades, Dawna L.; Reynolds, Rosemarie; Waguespack, Blaise, Jr.; Williams, Michael

    2005-01-01

    One of the arguments against deregulation of the airline industry has been the possibility that financially troubled carriers would be tempted to lower line maintenance spending, thus lowering maintenance quality and decreasing the overall safety of the carrier. Given the financial crisis triggered by the events of 9/11: it appears to be a good time to revisit this issue. This paper examines the quality of airline line maintenance activity and examines the impact of maintenance spending on maintenance quality and overall safety. Findings indicate that increased maintenance spending is associated with increased line maintenance activity and increased overall safety quality for the major U.S. carriers.

  3. Semi-pervasive interface on a virtual reality based training system for live line maintenance activities on energy distribution networks; Interface semi-pervasiva em um sistema de treinamento baseado em realidade virtual para atividades de manutencao em linha viva em redes de distribuicao de energia

    Energy Technology Data Exchange (ETDEWEB)

    Geus, Klaus de; Otto Filho, Eduardo; Goulart, Jomar Centeno [Companhia Paranaense de Energia (COPEL), Curitiba, PR (Brazil)], Emails: klaus@copel.com, eduardo.otto@copel.com, jomarcg@copel.com; Scheer, Sergio; Buriol, Tiago Martinuzzi; Rosendo, Matheus [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil)], Emails: scheer@ufpr.br, tiagoburiol@gmail.com, matheusrosendo@gmail.com; Felsky Filho, Carlos Eduardo [Instituto de Tecnologia para o Desenvolvimento (LACTEC), Curitiba, PR (Brazil)], Email: felsky@latec.org.br

    2010-04-15

    Techniques for live-line maintenance are those performed on power distribution networks without interrupting the flow of energy. This practice net avoids costs, but it is considered high-risk. Thus the effectiveness of previous training is very important and, therefore, constant efforts are made to find resources in order to improve the knowledge retention and quality of information provided. This paper discusses the development of a semi-immersive VR system for training of live-line maintenance activities. Aspects of the development software, its characteristics and functional model, in addition to the interactive devices are presented and the choices justified. The goal is to describe an unprecedented platform which uses devices the Nintendo Wii to provide a novel model of interaction and navigation in professional activities. This model is focused on some principles of ubiquitous computing and tangible interaction. (author)

  4. Refractory Gunning Material for Inner Lining Maintenance of Blast Furnace

    Institute of Scientific and Technical Information of China (English)

    Yu Lingyan; Peng Xigao

    2010-01-01

    @@ 1 Scope This standard specifies the term and definition,classification, technical requirements, test methods,quality appraisal procedures, packing, marking, transportation, storage, and quality certificate of refractory gunning material for inner lining maintenance of blast furnace .

  5. Total productive maintenance on example of automated foundry lines

    Directory of Open Access Journals (Sweden)

    S. Kukla

    2009-07-01

    Full Text Available Within framework of the presented study one has performed analysis of stoppages in automatic foundry lines operation, and basing on assumptions from complex maintenance system has undertaken himself to develop a service maintenance schedule for machinery installed in the line. Moreover, one has presented general assumptions of TPM system operated in conditions of series and multi-series production of cast iron castings. One has constructed operational database and has elaborated a list of line stoppage causes within a year. One has proposed a possibility of implementation of manufacturing systems modeling and simulating technique in management of production machinery operation in a foundry shop. Within framework of the simulation experiment one has developed schedules of production, schedules of maintenance and has forecasted indices of general productivity of the machinery for a various scenarios of events on example of casting line having in-series structure of operational reliability. In course of the study there was implemented ARENA universal software package to modeling and simulation of the manufacturing systems.

  6. Second Line of Defense: Electronic Maintenance Reports, Local Maintenance Provider User Guide, Rev. 3

    Energy Technology Data Exchange (ETDEWEB)

    Leigh, Richard J.

    2012-09-01

    The Electronic Maintenance Report forms allow Local Maintenance Providers (LMP) and other program staff to enter maintenance information into a simple and secure system. This document describes the features and information required to complete the Maintenance Report forms. It is expected that all Corrective Maintenance Reports from LMPs will be submitted electronically into the SLD Portal. As an exception (e.g., when access to the SLD Portal is unavailable), Maintenance Reports can be submitted via a secure Adobe PDF form available through the Sustainability Manager assigned to each country.

  7. State-dependent physiological maintenance in a long-lived ectotherm, the painted turtle (Chrysemys picta).

    Science.gov (United States)

    Schwanz, Lisa; Warner, Daniel A; McGaugh, Suzanne; Di Terlizzi, Roberta; Bronikowski, Anne

    2011-01-01

    Energy allocation among somatic maintenance, reproduction and growth varies not only among species, but among individuals according to states such as age, sex and season. Little research has been conducted on the somatic (physiological) maintenance of long-lived organisms, particularly ectotherms such as reptiles. In this study, we examined sex differences and age- and season-related variation in immune function and DNA repair efficiency in a long-lived reptile, the painted turtle (Chrysemys picta). Immune components tended to be depressed during hibernation, in winter, compared with autumn or spring. Increased heterophil count during hibernation provided the only support for winter immunoenhancement. In juvenile and adult turtles, we found little evidence for senescence in physiological maintenance, consistent with predictions for long-lived organisms. Among immune components, swelling in response to phytohemagglutinin (PHA) and control injection increased with age, whereas basophil count decreased with age. Hatchling turtles had reduced basophil counts and natural antibodies, indicative of an immature immune system, but demonstrated higher DNA repair efficiency than older turtles. Reproductively mature turtles had reduced lymphocytes compared with juvenile turtles in the spring, presumably driven by a trade-off between maintenance and reproduction. Sex had little influence on physiological maintenance. These results suggest that components of physiological maintenance are modulated differentially according to individual state and highlight the need for more research on the multiple components of physiological maintenance in animals of variable states.

  8. Implementation Guideline for Maintenance Line Operations Safety Assessment (M-LOSA) and Ramp LOSA (R-LOSA) Programs

    Science.gov (United States)

    2012-08-01

    airlines and Maintenance Repair & Overhaul ( MROs ) communities. 53 Appendix A. Organizational Change Management – Stakeholder Strategy...Maintenance Line Operations Safety Audit MRO – Maintenance, Repair & Overhaul NOSS – Normal Operations Safety Survey QA – Quality Assurance RACI

  9. Capecitabine Maintenance Therapy after First-Line Chemotherapy in Patients with Metastatic Colorectal Cancer

    Institute of Scientific and Technical Information of China (English)

    Yan Li; Jing Li; Ming Lu; Xi-cheng Wang; Lin Shen

    2010-01-01

    Objective:To evaluate the efficacy and toxicity of capecitabine maintenance therapy in metastatic colorectal cancer(mCRC)patients.Methods:From June 2001 to November 2006,after they had achieved clinical response from first-line chemotherapy,patients with mCRC in our hospital received two different treatment strategies.Thirty-three patients non-maintenance group did not receive any further chemotherapy.Results:Patients in maintenance group and non-maintenance group both received FOLFOX,FOLFIRI and XELOX as first-line therapy.The median chemotherapy cycles the two groups received were the same(6 vs 6).The response rates of first-line chemotherapy were 33.3% in maintenance group and 32.7% in non-maintenance group.Patients in maintenance group received 3-9 cycles of capecitabine therapy(median cycle 4).29/33(87.9%)patients in maintenance group and 47/52(90.4%)in non-maintenance group received following second-line chemotherapy,and no patients underwent targeted therapy.The median survival time and TTP were 40.4 months(95%CI:24.2-56.6)and 9.0 months(95%CI:6.7-11.3)in maintenance group,as compared with 21.5 months(95%CI:14.9-28.0,P=0.015)and 6.5 months(95%CI:4.4-8.5,P=0.007)in non-maintenance group.No severe adverse event was observed in the capecitabine maintenance group.Conclusion:mCRC patients could benefit from capecitabine maintenance therapy by prolonging survival time and TTP.

  10. Development of Live-working Robot for Power Transmission Lines

    Science.gov (United States)

    Yan, Yu; Liu, Xiaqing; Ren, Chengxian; Li, Jinliang; Li, Hui

    2017-07-01

    Dream-I, the first reconfigurable live-working robot for power transmission lines successfully developed in China, has the functions of autonomous walking on lines and accurately positioning. This paper firstly described operation task and object of the robot; then designed a general platform, an insulator replacement end and a drainage plate bolt fastening end of the robot, presented a control system of the robot, and performed simulation analysis on operation plan of the robot; and finally completed electrical field withstand voltage tests in a high voltage hall as well as online test and trial on actual lines. Experimental results show that by replacing ends of manipulators, the robot can fulfill operation tasks of live replacement of suspension insulators and live drainage plate bolt fastening.

  11. Living and Working Safely Around High-Voltage Power Lines.

    Energy Technology Data Exchange (ETDEWEB)

    United States. Bonneville Power Administration.

    2001-06-01

    High-voltage transmission lines can be just as safe as the electrical wiring in the homes--or just as dangerous. The crucial factor is ourselves: they must learn to behave safely around them. This booklet is a basic safety guide for those who live and work around power lines. It deals primarily with nuisance shocks due to induced voltages, and with potential electric shock hazards from contact with high-voltage lines. References on possible long-term biological effects of transmission lines are shown. In preparing this booklet, the Bonneville Power Administration has drawn on more than 50 years of experience with high-voltage transmission. BPA operates one of the world`s largest networks of long-distance, high-voltage lines. This system has more than 400 substations and about 15,000 miles of transmission lines, almost 4,400 miles of which are operated at 500,000 volts.

  12. On the use of on-line detection for maintenance of gradually deteriorating systems

    Energy Technology Data Exchange (ETDEWEB)

    Fouladirad, Mitra [Institut Charles Delaunay, Universite de Technologie de Troyes, FRE CNRS 2848, LM2S 12 rue Marie Curie, 10010 Troyes (France); Grall, Antoine [Institut Charles Delaunay, Universite de Technologie de Troyes, FRE CNRS 2848, LM2S 12 rue Marie Curie, 10010 Troyes (France)], E-mail: antoine.grall@utt.fr; Dieulle, Laurence [Institut Charles Delaunay, Universite de Technologie de Troyes, FRE CNRS 2848, LM2S 12 rue Marie Curie, 10010 Troyes (France)

    2008-12-15

    This paper deals with condition-based maintenance and non-stationary degradation process due to sudden changes. This is an attempt to propose an adaptive maintenance policy based on the on-line change detection procedure which can help to detect switches from a nominal mode to an accelerated mode in a non-informative context about the change mode time.

  13. Second Line of Defense Help Desk: Electronic Maintenance Reports - Local Maintenance Provider User Guide Rev. 1

    Energy Technology Data Exchange (ETDEWEB)

    Leigh, Richard J.

    2011-12-14

    The Electronic Maintenance Report forms present a uniform dataset for analysis of Sustainability metrics. These forms collect readily minable data while allowing the attachment of site-specific checklists or other supporting files for review by the Sustainability Manager and Program Management.

  14. Innovative sub sea pipeline maintenance in line with emerging offshore trends and maintenance safety standards

    Energy Technology Data Exchange (ETDEWEB)

    Lim, George [T.D. Williamson, Inc., Tulsa, OK (United States)

    2012-07-01

    attached to the Sub sea 1200RC machine and operated from an on-board laptop. This results in a lightweight hot tap frame and total direct control of the cutting process. The machine has been designed, built, tested and successfully deployed on a recent sub sea tap for a pipeline operator in Asia. This technology promotes the 'separation of man and machine' proposition. It reduces risk by reducing diver exposure, enhances safety, provides direct control and visibility from a laptop and facilitates fast and accurate execution. Ultimately, the concept may be extended toward onshore hot tap applications in risky environments calling for remotely operated systems. The purpose of this paper is to demonstrate a major new contribution in terms of knowledge and expertise to the offshore pipeline maintenance environment. It will detail the process and procedures, as well as delve into a customer application and the results. Part of the details will include areas of testing of the equipment, conditions in which it is designed to perform and how the needs of the pipeline operators were incorporated into the execution of the project. The results of the operation are meant to demonstrate how technology is progressing in line with emerging offshore trends, especially offshore exploration in Brazil. (author)

  15. LINE-1 induces hTERT and ensures telomere maintenance in tumour cell lines.

    Science.gov (United States)

    Aschacher, T; Wolf, B; Enzmann, F; Kienzl, P; Messner, B; Sampl, S; Svoboda, M; Mechtcheriakova, D; Holzmann, K; Bergmann, M

    2016-01-01

    A hallmark of cancer cells is an activated telomere maintenance mechanism, which allows prolonged survival of the malignant cells. In more than 80% of tumours, telomeres are elongated by the enzyme telomerase, which adds de novo telomere repeats to the ends of chromosomes. Cancer cells are also characterized by expression of active LINE-1 elements (L1s, long interspersed nuclear elements-1). L1 elements are abundant retrotransposons in the eukaryotic genome that are primarily known for facilitating aberrant recombination. Using L1-knockdown (KD), we show for the first time that L1 is critical for telomere maintenance in telomerase-positive tumour cells. The reduced length of telomeres in the L1-KD-treated cells correlated with an increased rate of telomere dysfunction foci, a reduced expression of shelterin proteins and an increased rate of anaphase bridges. The decreased telomere length was associated with a decreased telomerase activity and decreased telomerase mRNA level; the latter was increased upon L1 overexpression. L1-KD also led to a decrease in mRNA and protein expression of cMyc and KLF-4, two main transcription factors of telomerase and altered mRNA levels of other stem-cell-associated proteins such as CD44 and hMyb, as well as a corresponding reduced growth of spheroids. The KD of KLF-4 or cMyc decreased the level of L1-ORF1 mRNA, suggesting a specific reciprocal regulation with L1. Thus, our findings contribute to the understanding of L1 as a pathogenicity factor in cancer cells. As L1 is only expressed in pathophysiological conditions, L1 now appears to be target in the rational treatment of telomerase-positive cancer.

  16. Computer vision-guided robotic system for electrical power lines maintenance

    Science.gov (United States)

    Tremblay, Jack; Laliberte, T.; Houde, Regis; Pelletier, Michel; Gosselin, Clement M.; Laurendeau, Denis

    1995-12-01

    The paper presents several modules of a computer vision assisted robotic system for the maintenance of live electrical power lines. The basic scene of interest is composed of generic components such as a crossarm, a power line and a porcelain insulator. The system is under the supervision of an operator which validates each subtask. The system uses a 3D range finder mounted at the end effector of a 6 dof manipulator for the acquisition of range data on the scene. Since more than one view is required to obtain enough information on the scene, a view integration procedure is applied to the data in order to merge the information in a single reference frame. A volumetric description of the scene, in this case an octree, is built using the range data. The octree is transformed into an occupancy grid which is used for avoiding collisions between the manipulator and the components of the scene during the line manipulation step. The collision avoidance module uses the occupancy grid to create a discrete electrostatic potential field representing the various goals (e.g. objects of interest) and obstacles in the scene. The algorithm takes into account the articular limits of the robot and uses a redundant manipulator to ensure that the collision avoidance constraints do not compete with the task which is to reach a given goal with the end-effector. A pose determination algorithm called Iterative Closest Point is presented. The algorithm allows to compute the pose of the various components of the scene and allows the robot to manipulate these components safely. The system has been tested on an actual scene. The manipulation was successfully implemented using a synchronized geometry range finder mounted on a PUMA 760 robot manipulator under the control of Cartool.

  17. Application of a power line maintenance information system using OPGW to the Nishi-Gunma UHV line

    Energy Technology Data Exchange (ETDEWEB)

    Ooura, K. [Tokyo Electric Power Co., Inc., Tokyo (Japan); Kanemaru, K.; Matsubara, R. [Hitachi Cable Ltd., Tokyo (Japan); Ibuki, S. [Furukawa Electric Co. Ltd., Tokyo (Japan)

    1995-01-01

    Tokyo Electric Power Company, Inc. began operation of the Nishi-Gunma UHV trunk line, the first 1,000 kV-designed power line in Japan, in April, 1992. This line is expected to be the key line in a major trunk-line system that is being developed. It traverses high-altitude mountainous areas subject to severe environmental and meteorological conditions for a long distance. A system using Composite Fiber-optic Overhead Ground Wire (OPGW) is constructed to obtain precise information on this line for maintenance purposes. This system comprises three major functions; (1) meteorological and facility`s monitoring for gathering meteorological data on such elements as winds, and icing and snow accretion, and for evaluating the corresponding reaction of the components such as conductor tension, and strain In the tower structure, (2) Industrial TV (ITV) monitoring for visual observation of weather, surrounding conditions and site facilities, and (3) fault section location for pinpointing faults quickly and determining the maintenance office that should respond to the faults. This Is done by estimating the fault section accurately around the boundaries of the maintenance jurisdictions. This paper describes the development of these functions and results obtained from practical operation.

  18. The Line Operations Safety Audit Program: Transitioning From Flight Operations to Maintenance and Ramp Operations

    Science.gov (United States)

    2011-09-01

    A Line Operations Safety Audit ( LOSA ) is a voluntary safety program that collects safety data during normal airline operations and was originally...maintenance and ramp operations. This report provides a review of the use of LOSA , discusses LOSA’s essential operating characteristics, lessons learned on...the flight deck, and describes the extension of LOSA to maintenance and ramp operations. The research team developed tools for airlines and

  19. Analysis of Safety Protection Measures for Maintenance Work of 500 kV Double-Circuit Transmission Lines on Same Tower

    Science.gov (United States)

    Yang, Qi; Zou, Dehua; Zhang, Jianjun; Li, Hui; Chen, Jianping; Li, Jinliang

    2017-05-01

    Four transmission lines on the same tower are widely used because of their obvious economic and social benefits. But it also has high power supply reliability, so the choice of reasonable maintenance mode is particularly important. In this paper, we deducted the maintenance influence of the energized line to non-energized line, calculated and analyzed protection measures of non-energized singular line of 500kV double-circuit transmission line on the same tower with ATP software, and calculated field intensity distribution of typical operating position of the energized double-circuit transmission line with the finite element software. The calculation shows that when using the outage maintenance method, hanging both ground current and personal security line can reduce the current flowing through the operator’s body effectively. When using the live maintenance method, the field intensity of operator body strengths up to 383.69kV/m, The operator needs to wear shielding cloth with at least 43.08 dB shielding efficiency, in order to meet the security requirements.

  20. 试论高压输电线路的维护技术%On the High-voltage Transmission Line Maintenance Technology

    Institute of Scientific and Technical Information of China (English)

    邹长江

    2014-01-01

    Transmission lines with people’s daily lives have close ties. Once the high-voltage transmission line failure, will cause inconvenience to people’s lives. Thus, high-voltage transmission lines should do maintenance work;vigorously develop related maintenance techniques to ensure safe operation of the transmission lines. By analyzing the main characteristics of high-voltage transmission line maintenance, propose effective measures to maintain the high-voltage transmission lines.%输电线路与人们的日常生活具有紧密的联系。一旦高压输电线路出现故障,必将给人们的生活带来不便。由此可见,应做好高压输电线路的维护工作,大力开发相关维护技术,保障输电线路的安全运行。通过分析高压输电线路维护的主要特点,提出了维护高压输电线路的有效措施。

  1. A maintenance concept for concrete tunnel linings in soft soil conditions

    NARCIS (Netherlands)

    Vervuurt, A.H.J.M.; Leegwater, G.; Polder, R.B.

    2008-01-01

    In the European project TUNCONSTRUCT a life cycle cost method for management and maintenance of underground structures is developed. Within the project TNO is concerned with the durability of the concrete lining. In this paper the concept is explained by means of a case of a bored road tunnel (in so

  2. A maintenance concept for concrete tunnel linings in soft soil conditions

    NARCIS (Netherlands)

    Vervuurt, A.H.J.M.; Leegwater, G.; Polder, R.B.

    2008-01-01

    In the European project TUNCONSTRUCT a life cycle cost method for management and maintenance of underground structures is developed. Within the project TNO is concerned with the durability of the concrete lining. In this paper the concept is explained by means of a case of a bored road tunnel (in

  3. 输电线路的运行与维护管理%Operation and maintenance management of transmission lines

    Institute of Scientific and Technical Information of China (English)

    徐英杰; 万强; 吴红石

    2016-01-01

    输电线路在运行过程中,有很多潜在的因素会对其安全性和稳定性造成巨大的威胁,在进行详细分析归类之后,应该采取具有针对性的措施,并由专门的监督和管理部门督促执行,这样,才能保证输电线路的安全稳定运行。输电线路的运行与维护管理对维护经济发展,提高居民生活水平等都有着十分重要的意义,因此,只有更好的执行输电线路的状态检测和状态检修工作,才能为输电线路的安全稳定提供保障。%During the operation of transmission line, there are many potential factors that can cause great threats to their security and stability, after carrying out a detailed analysis and classification, targeted measures should be implemented by management department, so as to ensure safe and stable operation of the transmission line. Operation and maintenance of transmission lines has a very important significance for maintaining economic growth and improving people's living standards. Therefore, only better execution of the detection and maintenance can provide protection for the security and stability of transmission line.

  4. Possibilities of joining techniques application at railway lines joining and maintenance

    Directory of Open Access Journals (Sweden)

    I. Samardžić

    2011-10-01

    Full Text Available This paper presents most important techniques which is possible to apply at joining of railway lines as well as maintenance procedure. Beside thermit welding as a older joint process for that job (since 1895. it is mentioned flash welding as a modern joining technique interesting from the point of cost efficiency. In a case of maintance tasks it is necessary to caunt arc welding processes and thermit welding, too. Authors gave some experimental date collected during investigation on railway lines joining techniques application.

  5. Dielectric strength test to protection elements for live lines works

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Pinto-Salamanca

    2017-06-01

    Full Text Available This paper presents the design and assembly of a system of tests of sustained voltage to elements and equipment used in live line maneuvers through tests on gloves and dielectric rods, as these are the first points of contact to ensure safe operations. It means an advance for the creation of a laboratory certified in this type of tests at Universidad Pedagógica y Tecnológica de Colombia (UPTC Faculty of Duitama, considering that currently there are not laboratories that provide this service in Boyacá and Casanare. Dielectric strength tests were performed on personal protection elements and equipment under the parameters of ASTM D120, ASTM F496, ISO 60903, ASTM-F711 and IEEE 978, developing an assembly for testing gloves and dielectric rods with voltage levels up to 15 kV. The results validate the proposed system to outlook of circuit design and implementation, where tests were performed to establish dielectric capacities, in operating under open circuit conditions, with resistive load or short circuit. The compliance with the regulations established under the test sequences of safety parameters for the system and the follow-up to the tests was verified through the use of a management system for the generation of concepts of approval or rejection of the tested elements.

  6. Accelerated second-line or maintenance chemotherapy versus treatment at disease progression in NSCLC.

    Science.gov (United States)

    Velez, Michel; Belalcazar, Astrid; Domingo, Gelenis; Blaya, Marcelo; Raez, Luis E; Santos, Edgardo S

    2010-04-01

    For many decades, the use of chemotherapy as second-line therapy in non-small-cell lung cancer relied upon disease progression. Several studies have shown that four to six cycles of chemotherapy administered as front-line therapy treatment offers a survival advantage to patients; however, further chemotherapy beyond this initial treatment was more associated with side effects and no benefit in survival. Until 2009, second-line treatment for lung cancer was well established for three therapeutic agents: docetaxel, pemetrexed and erlotinib. Currently, the timeframe to use these agents has been challenged by two large randomized clinical trials in which pemetrexed (JMEN trial) and erlotinib (Sequential Tarceva in Unresectable NSCLC [SATURN] trial) were used as 'maintenance' therapy and shown to impact progression-free survival and overall survival. This review focuses on the actual dilemma that medical oncologists face in clinical practice in terms of when and to whom maintenance therapy should be applied or if the 'watch and wait' approach prior to start second-line therapy is still advisable.

  7. Isolation and maintenance of Rickettsia raoultii in a Rhipicephalus sanguineus tick cell line.

    Science.gov (United States)

    Santibáñez, Sonia; Portillo, Aránzazu; Palomar, Ana M; Bell-Sakyi, Lesley; Romero, Lourdes; Oteo, José A

    2015-01-01

    Rickettsia raoultii, a member of the spotted fever group rickettsiae, has been implicated in cases of DEBONEL/TIBOLA/SENLAT, and has been detected in Dermacentor spp. and Rhipicephalus pumilio ticks by PCR. R. raoultii has been isolated in mammalian and tick cell lines. This study aimed to isolate R. raoultii from Spanish Dermacentor marginatus in tick cell lines. A single adult D. marginatus collected from vegetation in La Rioja (Northen Spain) in October 2012 was surface-sterilised, triturated and aliquots of the homogenate were inoculated into a panel of tick cell lines derived from embryonic Rhipicephalus sanguineus, Rhipicephalus evertsi and Ixodes ricinus. Cultures were maintained at 28 °C with weekly medium changes and checked by Gimenez stain for Rickettsia-like intracellular organisms. After 50 days of incubation, intracellular Rickettsia-like organisms were observed in the R. sanguineus cell line RML-RSE using Gimenez stain. PCR assays and sequencing of fragments of 16S RNA, ompB and ompA genes in DNA extracted from the culture suspension showed 100% identity with R. raoultii. Growth of intracellular microorganisms was not observed in preparations of the other tick cell lines. In conclusion, the tick cell line RML-RSE is a useful system for the isolation and maintenance of R. raoultii.

  8. Dialect and Cultural Contact, Shift and Maintenance among the Jordanians Living in Irbid City: A Sociolinguistic Study

    Science.gov (United States)

    Abushihab, Ibrahim

    2015-01-01

    The paper investigates the issue of dialect and cultural contact among Jordanians living in Irbid city in the north of Jordan. The objective of the paper is to find the extent of dialect and cultural shift and maintenance among them. The data are collected by means of interviews and observations. A sample of 100 participants has been selected on…

  9. Kidney transplant from a living monozygotic twin donor with no maintenance immunosuppression.

    Science.gov (United States)

    Sánchez-Escuredo, Ana; Barajas, Alberto; Revuelta, Ignacio; Blasco, Miquel; Cofan, Federic; Esforzado, Núria; Ricart, María José; Torregrosa, Vicens; Campistol, Josep Maria; Oppenheimer, Federic; Diekmann, Fritz

    2015-01-01

    From a theoretical point of view, an alloimmune response can not take place, still some type of standard immunosuppression is used in about 60% of patients receiving kidney grafts from their monozygotic twins. We aimed at assessing clinical response in patients receiving renal grafts from a living monozygotic twin donor when no immunosuppressive therapy is used. This is a retrospective observational study of patients receiving kidney grafts from their monozygotic twins from 1969 to 2013. The following data were recorded: age, renal graft recipient's primary disease, renal function, renal survival and overall survival. Immunosuppressive therapy included a single intraoperative dose of methylprednisolone 500 mg and no maintenance immunosuppression. Five patients with kidney grafts from their monozygotic twins were dentified in our centre. Mean age at transplantation was 33 years (27-39). One-year overall survival and graft survival were 100%. Mean creatinine level was 0.96 ± 0.2 one year after transplantation, and 1.2 ± 0.37 mg/dl at most recent follow-up. Two patients died with a functional graft more than 15 years after kidney transplantation (causes were melanoma and cardiovascular event respectively). Follow-up was lost in a patient one year after transplantation. Two patients are alive with a functioning graft at 18 months and 42.5 years after transplantation respectively. Kidney transplantation from a living monozygotic twin is associated to outstanding clinical outcomes. Immunossuppresive therapy to suppress alloimmune response in probably unnecessary 11 zygosity has been confirmed. Copyright © 2015 The Authors. Published by Elsevier España, S.L.U. All rights reserved.

  10. The role of art-making in identity maintenance: case studies of people living with cancer.

    Science.gov (United States)

    Reynolds, F; Prior, S

    2006-09-01

    The aim of this qualitative research was to understand why some people with cancer take up art as a leisure activity, and how visual art-making in daily life might support identity maintenance/reconstruction. The study forms part of a larger project with people who view art-making as a resource for living with chronic illness. In order to provide a detailed, holistic analysis, the paper focuses on the accounts and artwork of three participants, two women (aged 47 and 59 years) each with breast cancer, and a man (aged 51 years) with stomach and lung cancer. The participants turned to art after a process of reflection but did not necessarily reject their pre-illness lifestyles or selves. Rather, art-making afforded many opportunities to retain familiar personal and social identities, and to resist being dominated by labels related to their illness. A practical implication is that people coping with cancer may need not only cognitive and emotional support, but opportunities to find meaningful activities. Such activities can be understood to have a powerful role in maintaining a familiar, positive identity in cancer, and providing a resource for coping.

  11. Meta-analysis of first-line therapies with maintenance regimens for advanced non-small-cell lung cancer (NSCLC) in molecularly and clinically selected populations.

    Science.gov (United States)

    Tan, Pui San; Bilger, Marcel; de Lima Lopes, Gilberto; Acharyya, Sanchalika; Haaland, Benjamin

    2017-08-01

    Evidence has suggested survival benefits of maintenance for advanced NSCLC patients not progressing after first-line chemotherapy. Additionally, particular first-line targeted therapies have shown survival improvements in selected populations. Optimal first-line and maintenance therapies remain unclear. Here, currently available evidence was synthesized to elucidate optimal first-line and maintenance therapy within patient groups. Literature was searched for randomized trials evaluating first-line and maintenance regimens in advanced NSCLC patients. Bayesian network meta-analysis was performed within molecularly and clinically selected groups. The primary outcome was combined clinically meaningful OS and PFS benefits. A total of 87 records on 56 trials evaluating first-line treatments with maintenance were included. Results showed combined clinically meaningful OS and PFS benefits with particular first-line with maintenance treatments, (1) first-line intercalated chemotherapy+erlotinib, maintenance erlotinib in patients with EGFR mutations, (2) first-line afatinib, maintenance afatinib in patients with EGFR deletion 19, (3) first-line chemotherapy + bevacizumab, maintenance bevacizumab in EGFR wild-type patients, (4) chemotherapy+conatumumab, maintenance conatumumab in patients with squamous histology, (5) chemotherapy+cetuximab, maintenance cetuximab or chemotherapy + necitumumab, maintenance necitumumab in EGFR FISH-positive patients with squamous histology, and (6) first-line chemotherapy+bevacizumab, maintenance bevacizumab or first-line sequential chemotherapy+gefitinib, maintenance gefitinib in patients clinically enriched for EGFR mutations with nonsquamous histology. No treatment showed combined clinically meaningful OS and PFS benefits in patients with EGFR L858R or nonsquamous histology. Particular first-line with maintenance treatments show meaningful OS and PFS benefits in patients selected by EGFR mutation or histology. Further research is needed

  12. On-line separation of short-lived beryllium isotopes

    CERN Document Server

    Köster, U; Catherall, R; Fedosseev, V; Georg, U; Huber, G; Jading, Y; Jonsson, O; Koizumi, M; Kratz, K L; Kugler, E; Lettry, Jacques; Mishin, V I; Ravn, H L; Sebastian, V; Tamburella, C; Wöhr, A

    1998-01-01

    With the development of a new laser ionization scheme, it became possible to ionize beryllium efficiently in the hot cavity of the ISOLDE laser ion source. The high target and ion source temperatures enable the release of short-lived beryllium isotopes. Thus all particle-stable beryllium isotopes could be extracted from a standard uranium carbide/graphite target. For the first time the short-lived isotopes /sup 12/Be and /sup 14/Be could be identified at an ISOL facility, /sup 14/Be being among the most short-lived isotopes separated so far at ISOLDE. The release time from the UC/graphite target was studied with several beryllium isotopes. Profiting from the element selectivity of laser ionization, the strong and isotopically pure beam of /sup 12/Be allowed to determine the half- life to T/sub 1/2 /=21.34(23) ms and the probability of beta-delayed neutron emission to P/sub n/=0.48/sub -0.10//sup +0.12/(23 refs).

  13. Urban health: people living below the poverty line.

    Science.gov (United States)

    1998-01-01

    Available data indicate that levels of urban poverty in India are increasing, while rural poverty is decreasing. Given the difficulty of accurately estimating the size of the poor and slum populations residing in urban areas, it is also difficult to assess the health and nutritional status of such populations. In 1991, 28% of the estimated 20 million people living in 23 major metropolitan areas lived in slums. 39-43% of India's slum population is distributed between Calcutta, Mumbai, Delhi, and Chennai. India must rise to the challenge of providing primary health care to millions of slum dwellers. Based upon the current urban growth rate, the Task Force of the National Institute of Urban Affairs has projected that by 2000, 62-78 million people will reside in India's slums, of an estimated 310 million person urban population. The health status of the urban poor is influenced by urban economies, urbanization, and urban environments. These factors are discussed, followed by consideration of the major health problems among the urban poor, the urban health care delivery system, and recommendations for a better urban health.

  14. Disconnect switch mobile to live line services; Chave seccionadora movel para servicos em linha viva

    Energy Technology Data Exchange (ETDEWEB)

    Gontijo, Geraldo Magela; Franco, Edivaldo Moreira [Companhia Energetica de Minas Gerais (CEMIG), Belo Horizonte, MG (Brazil); Diniz, Wagner Eustaquio; Rodrigues, Tiago Santana; Goncalves Junior, Celio [Ritz, Betim, MG (Brazil); Lopes, Caio Fernandes; Cardoso, Alexandre Ribeiro [Areva (Brazil)

    2011-10-15

    To carry out most economical maintenance in lightning and capacitive potential capacitors, the project described here developed a disconnector with remote drive that mounted on a insulating modular scaffold, allow the realization of the work without the circuit shutdown keeping the line available and avoiding loss of revenue for the company.

  15. Application of Helicopter Line Inspection and Live Overhaul in EHV Transmission Lines%直升机作业在超高压输电线路巡视与带电检修中的应用

    Institute of Scientific and Technical Information of China (English)

    赵志刚; 梁利辉

    2013-01-01

    This paper focuses on the background of helicopter line inspection ,compares advantages and disadvantages be-tween the helicopter line inspection and the manual line in-spection ,analyzes the key requirements and maintenance technologies of helicopter line inspection and live overhaul in EHV transmission lines ,makes some precautions during hel-icopter line inspection .%介绍直升机巡视背景,结合国网河北省电力公司直升机巡视情况,比较直升机巡视和人工巡视的优缺点,分析直升机在超高压输电线路巡视与带电检修应用中的关键要求和维护技术,并提出直升机巡视的注意事项。

  16. A risk-based approach to maintenance planning utilizing in-line inspection data

    Energy Technology Data Exchange (ETDEWEB)

    Fenyvesi, L.L. [TransCanada PipeLines Ltd., Calgary, AB (Canada); Colquhoun, I.; Kania, R.; Gu, B. [GE Power Systems (Canada)

    2004-07-01

    The pipeline industry routinely performs in-line inspections (ILI) to manage external corrosion in pipelines. ILIs are followed by repairs of defects that fail a deterministic criterion. Re-inspection is then performed after a prescribed time interval has elapsed. However, due to uncertainties associated with magnetic flux leakage (MFL) defect sizing and corrosion growth rates, a deterministic repair and re-inspection may result in nonessential maintenance expenditure. In addition, critical features may sometimes remain unidentified. This paper suggested that in order to evaluate the sensitivity of a defect's failure probability more effectively, a better approach would be to evaluate corrosion defects by viewing the process as an analysis of a set of stochastic variables rather than deterministic values. Therefore, this paper outlined the proposed stochastic approach in which tool error and growth rate uncertainty were explicitly considered. Computer simulation was used along with a process for continuously improving the characterization of each variable through a feedback loop. In order to minimize analysis time, the paper also outlined alternative methods to Monte Carlo, such as Importance Sampling. The approach has been successfully applied in field situations. It was shown that the approach can incorporate new information through repeat inspections or field excavations. 6 refs., 10 figs.

  17. 660 kV直流输电线路带电作业研究%Research on the Live-line Operation of 660 kV DC Transmission Lines

    Institute of Scientific and Technical Information of China (English)

    张志峰; 王永豪

    2015-01-01

    根据我国直流输电线路特点以及银东直流输电线路山西段运行维护的实际情况,并结合我国及世界各国关于直流输电的研究成果及50余年来输电线路带电作业经验,对±660 kV直流超高压输电线路带电作业的基础研究、作业人员的安全防护、防护用具、作业方式、作业工具等进行了论述,指出了当前应开展的工作,以保证±660 kV直流输电线路的安全稳定运行。%According to the characteristics of China's DC transmission line and the operation and maintenance situation of Yindong DC transmission line in Shanxi, and combining with the research achievements on DC transmission home and abroad and the live-line working experience in recent 50 years, some issues concerning live-line operation of ±660 kV HVDC transmission lines are elaborated, including basic research about live-line operation, operators' safety protection, protective equipment, operation mode and live-line tools etc.. The work that should be carried out currently are pointed out to ensure the safe and stable operation of ± 660 kV DC transmission lines.

  18. Maintenance of a living understory enhances soil carbon sequestration in subtropical orchards.

    Science.gov (United States)

    Liu, Zhanfeng; Lin, Yongbiao; Lu, Hongfang; Ding, Mingmao; Tan, Yaowen; Xu, Shejin; Fu, Shenglei

    2013-01-01

    Orchard understory represents an important component of the orchards, performing numerous functions related to soil quality, water relations and microclimate, but little attention has been paid on its effect on soil C sequestration. In the face of global climate change, fruit producers also require techniques that increase carbon (C) sequestration in a cost-effective manner. Here we present a case study to compare the effects of understory management (sod culture vs. clean tillage) on soil C sequestration in four subtropical orchards. The results of a 10-year study indicated that the maintenance of sod significantly enhanced the soil C stock in the top 1 m of orchard soils. Relative to clean tillage, sod culture increased annual soil C sequestration by 2.85 t C ha(-1), suggesting that understory management based on sod culture offers promising potential for soil carbon sequestration. Considering that China has the largest area of orchards in the world and that few of these orchards currently have sod understories, the establishment and maintenance of sod in orchards can help China increase C sequestration and greatly contribute to achieving CO2 reduction targets at a regional scale and potentially at a national scale.

  19. Live-line insulator washing: Experimental investigation to assess safety and efficiency requirements

    Energy Technology Data Exchange (ETDEWEB)

    Perin, D.; Pigini, A.; Visintainer, I. [CESI, Milano (Italy); Channakeshava; Ramamoorty, M. [CPRI, Bangalore (India)

    1994-12-31

    A laboratory investigation was carried out to study live-line washing of insulators, with special attention to the two washing procedures which adopt hand-held nozzles or helicopter mounted nozzles. The aspects related to safety and those related to efficiency and reliability were considered. On the basis of the results, safe working distances and indications to define optimal washing procedures were derived.

  20. Live-line insulator washing: Experimental investigation to assess safety and efficiency requirements

    Energy Technology Data Exchange (ETDEWEB)

    Perin, D.; Pigini, A.; Visintainer, I. [CESI, Milano (Italy); Ramamoorty, C.M. [CPRI, Bangalore (India)

    1995-01-01

    A laboratory investigation was carried out to study live-line washing of insulators, with special attention to the two washing procedures which adopt hand-held jet nozzles and helicopter mounted nozzles. The aspects related to safety and those related to efficiency and reliability were considered. On the basis of the results, site working distances and indications to define optimal washing procedures were derived.

  1. Study on data transmission method for power line maintenance information system using OPGW. OPGW riyo sodensen hoshu joho system no denso hoshiki ni kansuru kento

    Energy Technology Data Exchange (ETDEWEB)

    Kanemaru, K.; Toyota, S. (Hitachi Cable, Ltd., Tokyo (Japan))

    1994-02-20

    Composite fiber-optic overhead ground wires (OPGWs) installed to the major power transmission lines are applied as the information transmission routs with large capacity. An effective system for the power line maintenance operation is able to be set up by using said OPGWs to collect and transmit various kinds of maintenance information on the power lines. However, since it is necessary for the whole equipment to meet the highest transmitting speed required by the system if a single transmission method is applied throughout the power lines for transmitting the maintenance information, the system loses its economy as a whole. In this paper, for the purpose of transmitting effectively the various maintenance information in power line maintenance information system using OPGWs, and considering the required transmission period as well as the types of the data occurrence, an optic fiber transmission system constituted hierarchically and composed of high-speed trunk line and low-speed local line is suggested. Especially, regarding the low-speed local lines, random transmission method shows the superior properties in the transmission efficiency and low power-consumption compared with the cyclic transmission method. 9 refs., 9 figs., 4 tabs.

  2. Live image profiling of neural crest lineages in zebrafish transgenic lines.

    Science.gov (United States)

    Kwak, Jina; Park, Ok Kyu; Jung, Yoo Jung; Hwang, Byung Joon; Kwon, Seung-Hae; Kee, Yun

    2013-03-01

    Zebrafish transgenic lines are important experimental tools for lineage tracing and imaging studies. It is crucial to precisely characterize the cell lineages labeled in transgenic lines to understand their limitations and thus properly interpret the data obtained from their use; only then can we confidently select a line appropriate for our particular research objectives. Here we profiled the cell lineages labeled in the closely related neural crest transgenic lines Tg(foxd3:GFP), Tg(sox10:eGFP) and Tg(sox10:mRFP). These fish were crossed to generate embryos, in which foxd3 and sox10 transgenic neural crest labeling could be directly compared at the cellular level using live confocal imaging. We have identified key differences in the cell lineages labeled in each line during early neural crest development and demonstrated that the most anterior cranial neural crest cells initially migrating out of neural tube at the level of forebrain and anterior midbrain express sox10:eGFP and sox10:mRFP, but not foxd3:GFP. This differential profile was robustly maintained in the differentiating progeny of the neural crest lineages until 3.5dpf. Our data will enable researchers to make an informed choice in selecting transgenic lines for future neural crest research.

  3. Role of erlotinib in first-line and maintenance treatment of advanced non-small-cell lung cancer

    Directory of Open Access Journals (Sweden)

    Noemí Reguart

    2010-06-01

    Full Text Available Noemí Reguart1, Andrés Felipe Cardona2, Rafael Rosell31Medical Oncology Service, ICMHO, Hospital Clinic Barcelona, Barcelona, Spain; 2Clinical and Translational Oncology Group, Institute of Oncology, Fundación Santa Fe de Bogotá, Bogotá, D.C., Colombia; 3Medical Oncology Service, Catalan Institute of Oncology, ICO, Hospital Germans Trias i Pujol, Badalona, Barcelona, SpainAbstract: Erlotinib hydrochloride (Tarceva® is a member of a class of small molecule inhibitors that targets the tyrosine kinase domain of the epidermal growth factor receptor (EGFR, with anti-tumor activity in preclinical models. Erlotinib represents a new-generation of agents known as “targeted therapies” designed to act upon cancer cells by interfering with aberrant specific activated pathways needed for tumor growth, angiogenesis and cell survival. Since its approval in November 2004 for the treatment of locally advanced or metastatic non-small cell lung cancer (NSCLC after the failure of at least one prior chemotherapy regimen and with a view to improving patients’ outcomes and prevent symptoms, the scientific community has evaluated the potential role of erlotinib in other scenarios such as in maintenance therapy and, in first-line setting for a selected population based on biological markers of response such as mutations of the EGFR. The convenient once-a-day pill administration and the good toxicity profile of erlotinib make it a reasonable candidate for testing in this context. This report provides a review of the role of erlotinib therapy in advanced NSCLC. It summarizes current data and perspectives of erlotinib in upfront treatment and maintenance for advanced NSCLC as well as looking at candidate biomarkers of response to these new targeted-agents.Keywords: erlotinib, tyrosine kinase inhibitors, first line, maintenance, non-small-cell lung cancer

  4. Percutaneous Balloon Dilatation and Catheter Maintenance Method in the Patients with Biliary Strictures after Living Donor Liver Transplantation

    Energy Technology Data Exchange (ETDEWEB)

    Park, Dae Hong; Byun, Sung Su; Kim, Jeong Ho; Kim, Keon Kuk; Hwang, Hee Young; Kim, Hyung Sik; Choi, Hye Young; Park, Jae Hyung [Dept. of Gachon University School of Medicine, Gil Hospital, Incheon (Korea, Republic of)

    2013-04-15

    The aim of this study was to evaluate the therapeutic efficacy of the percutaneous balloon dilatation and catheter maintenance (BDCM) method for postoperative biliary strictures following living donor liver transplantation (LDLT). Eighteen patients (14 duct-to-duct anastomosis and 4 hepaticojejunostomy) with post-LDLT biliary stricture were treated by the percutaneous BDCM method. A good response was defined as residual stricture over 3.5 mm after repetitive BDCM and refractory response as residual stricture below 3.5 mm. If they demonstrated good results on follow-up studies after catheter withdrawal, all the patients quit the therapy. We evaluated the technical and clinical success rates, major complication rate, mean total procedure time and mean follow-up duration. The percutaneous BDCM method was technically successful without major complication. Nine patients improved biliary stricture (good response, mean 5.5 mm), and the other 9 patients showed residual stricture with the diameter below 3.5 mm (refractory response, mean 2.5 mm). However, all the patients were improved clinically without significant complication. The total procedure time was 1-15 months (mean 7.3 months) and follow-up duration was 6-54 months (mean 24 months). The percutaneous BDCM method for post-LDLT biliary strictures was an effective therapy even in the patients showing a refractory response. It seemed that total procedure time could be reduced if the response was determined earlier.

  5. Software Maintenance.

    Science.gov (United States)

    Cannon, Glenn; Jobe, Holly

    Proper cleaning and storage of audiovisual aids is outlined in this brief guide. Materials and equipment needed for first line maintenance are listed, as well as maintenance procedures for records, audio and video tape, film, filmstrips, slides, realia, models, prints, graphics, maps, and overhead transparencies. A 15-item quiz on software…

  6. An integrated on-line irradiation and in situ live cell imaging system

    Science.gov (United States)

    Liang, Ying; Fu, Qibin; Wang, Weikang; Liu, Yu; Liu, Feng; Yang, Gen; Wang, Yugang

    2015-09-01

    Ionizing radiation poses a threat to genome integrity by introducing DNA damages, particularly DNA double-strand breaks (DSB) in cells. Understanding how cells react to DSB and maintain genome integrity is of major importance, since increasing evidences indicate the links of DSB with genome instability and cancer predispositions. However, tracking the dynamics of DNA damages and repair response to ionizing radiation in individual cell is difficult. Here we describe the development of an on-line irradiation and in situ live cell imaging system based on isotopic sources at Institute of Heavy Ion Physics, Peking University. The system was designed to irradiate cells and in situ observe the cellular responses to ionizing radiation in real time. On-line irradiation was achieved by mounting a metal framework that hold an isotopic γ source above the cell culture dish for γ irradiation; or by integrating an isotopic α source to an objective lens under the specialized cell culture dish for α irradiation. Live cell imaging was performed on a confocal microscope with an environmental chamber installed on the microscope stage. Culture conditions in the environment chamber such as CO2, O2 concentration as well as temperature are adjustable, which further extends the capacity of the system and allows more flexible experimental design. We demonstrate the use of this system by tracking the DSB foci formation and disappearance in individual cells after exposure to irradiation. On-line irradiation together with in situ live cell imaging in adjustable culture conditions, the system overall provides a powerful tool for investigation of cellular and subcellular response to ionizing radiation under different physiological conditions such as hyperthermia or hypoxia.

  7. An integrated on-line irradiation and in situ live cell imaging system

    Energy Technology Data Exchange (ETDEWEB)

    Liang, Ying; Fu, Qibin; Wang, Weikang; Liu, Yu; Liu, Feng; Yang, Gen, E-mail: gen.yang@pku.edu.cn; Wang, Yugang

    2015-09-01

    Ionizing radiation poses a threat to genome integrity by introducing DNA damages, particularly DNA double-strand breaks (DSB) in cells. Understanding how cells react to DSB and maintain genome integrity is of major importance, since increasing evidences indicate the links of DSB with genome instability and cancer predispositions. However, tracking the dynamics of DNA damages and repair response to ionizing radiation in individual cell is difficult. Here we describe the development of an on-line irradiation and in situ live cell imaging system based on isotopic sources at Institute of Heavy Ion Physics, Peking University. The system was designed to irradiate cells and in situ observe the cellular responses to ionizing radiation in real time. On-line irradiation was achieved by mounting a metal framework that hold an isotopic γ source above the cell culture dish for γ irradiation; or by integrating an isotopic α source to an objective lens under the specialized cell culture dish for α irradiation. Live cell imaging was performed on a confocal microscope with an environmental chamber installed on the microscope stage. Culture conditions in the environment chamber such as CO{sub 2}, O{sub 2} concentration as well as temperature are adjustable, which further extends the capacity of the system and allows more flexible experimental design. We demonstrate the use of this system by tracking the DSB foci formation and disappearance in individual cells after exposure to irradiation. On-line irradiation together with in situ live cell imaging in adjustable culture conditions, the system overall provides a powerful tool for investigation of cellular and subcellular response to ionizing radiation under different physiological conditions such as hyperthermia or hypoxia.

  8. Photobleaching of the resonance Raman lines of cytochromes in living yeast cells.

    Science.gov (United States)

    Okotrub, Konstantin A; Surovtsev, Nikolay V

    2014-12-01

    The photobleaching of the resonance cytochrome Raman lines in living Saccharomyces cerevisiae cells was studied. The photobleaching rate versus the irradiation power was described by square function plus a constant in contrast to the linear dependence of the photoinjury rate. This difference distinguishes the cytochrome photooxidation from other processes of the cell photodamage. The square dependence is associated with the reaction involving two photogenerated intermediates while the constant with the dark redox balance rates. This work demonstrates a potential of Raman spectroscopy to characterize the native cytochrome reaction rates and to study the cell photodamage precursors. Copyright © 2014 Elsevier B.V. All rights reserved.

  9. Generation, isolation, and maintenance of rodent mast cells and mast cell lines

    DEFF Research Database (Denmark)

    Jensen, Bettina M; Swindle, Emily J; Iwaki, Shoko;

    2006-01-01

    Antigen-mediated mast cell activation, with subsequent mediator release, is a major initiator of the inflammatory allergic response associated with such conditions as asthma. A comprehensive understanding of the principles involved in this process therefore is key to the development of novel...... therapies for the treatment of these disease states. In vitro models of mast cell function have allowed significant progress to be made in the recognition of the fundamental principles of mast cell activation via the high-affinity IgE receptor (FcvarepsilonRI) and, more recently, other receptors expressed...... on mast cells. In addition to human mast cells, the major cell culture systems employed to investigate these responses are rat and mouse peritoneal mast cells, mouse bone-marrow-derived mast cells, the rat basophilic leukemia cell line RBL-2H3, and the mouse MC/9 mast cell line. In this unit, we describe...

  10. Operation and Maintenance of Overhead Transmission Line%架空输电线路的运行维护

    Institute of Scientific and Technical Information of China (English)

    王刚

    2014-01-01

    架空输电线路是将不同地区的发电厂、变电站、负荷点连接起来,起输送或交换电能作用的线路。由于架空线路暴露在大气环境中,易受到雷电袭击、雨淋、湿雾以及自然和工业污秽等造成停电事故。因此,加强架空输电线路的运行维护具有重要的意义。%Overhead transmission line is connecting the power plant, transformer substation, load point in different regions, designed for conveyance or exchange of electric energy. Bec- ause the overhead line is exposed to the atmosphere, it is often caused blackouts due to lightning, rain, wet fog and natural and industrial polution. Therefore, it is of important significa- nce to strengthen the maintenance operation of overhead tran- smission lines.

  11. TOPS On-Line: Automating the Construction and Maintenance of HTML Pages

    Science.gov (United States)

    Jones, Kennie H.

    1994-01-01

    After the Technology Opportunities Showcase (TOPS), in October, 1993, Langley Research Center's (LaRC) Information Systems Division (ISD) accepted the challenge to preserve the investment in information assembled in the TOPS exhibits by establishing a data base. Following the lead of several people at LaRC and others around the world, the HyperText Transport Protocol (HTTP) server and Mosaic were the obvious tools of choice for implementation. Initially, some TOPS exhibitors began the conventional approach of constructing HyperText Markup Language (HTML) pages of their exhibits as input to Mosaic. Considering the number of pages to construct, a better approach was conceived that would automate the construction of pages. This approach allowed completion of the data base construction in a shorter period of time using fewer resources than would have been possible with the conventional approach. It also provided flexibility for the maintenance and enhancement of the data base. Since that time, this approach has been used to automate construction of other HTML data bases. Through these experiences, it is concluded that the most effective use of the HTTP/Mosaic technology will require better tools and techniques for creating, maintaining and managing the HTML pages. The development and use of these tools and techniques are the subject of this document.

  12. An off-line dual maximum resource bin packing model for solving the maintenance problem in the aviation industry

    Directory of Open Access Journals (Sweden)

    George Cristian Gruia

    2013-05-01

    Full Text Available In the aviation industry, propeller motor engines have a lifecycle of several thousand hours of flight and the maintenance is an important part of their lifecycle. The present article considers a multi-resource, priority-based case scheduling problem, which is applied in a Romanian manufacturing company, that repairs and maintains helicopter and airplane engines at a certain quality level imposed by the aviation standards. Given a reduced budget constraint, the management’s goal is to maximize the utilization of their resources (financial, material, space, workers, by maintaining a prior known priority rule. An Off-Line Dual Maximum Resource Bin Packing model, based on a Mixed Integer Programming model is thus presented. The obtained results show an increase with approx. 25% of the Just in Time shipping of the engines to the customers and approx. 12,5% increase in the utilization of the working area.

  13. Autonomous Inspection Robot for Power Transmission Lines Maintenance While Operating on the Overhead Ground Wires

    Directory of Open Access Journals (Sweden)

    Zheng Li

    2011-01-01

    Full Text Available This paper describes the development of a mobile robot capable of clearing such obstacles as counterweights, anchor clamps, and torsion tower. The mobile robot walks on overhead ground wires in 500KV power tower. Its ultimate purpose is to automate to inspect the defect of power transmission line. The robot with 13 motors is composed of two arms, two wheels, two claws, two wrists, etc. Each arm has 4 degree of freedom. Claws are also mounted on the arms. An embedded computer based on PC/104 is chosen as the core of control system. Visible light and thermal infrared cameras are installed to obtain the video and temperature information, and the communication system is based on wireless LAN TCP/IP protocol. A prototype robot was developed with careful considerations of mobility. The new sensor configuration is used for the claw to grasp the overhead ground wires. The bridge is installed in the torsion tower for the robot easy to cross obstacles. The new posture plan is proposed for obstacles cleaning in the torsion tower. Results of experiments demonstrate that the robot can be applied to execute the navigation and inspection tasks.

  14. Autonomous Inspection Robot for Power Transmission Lines Maintenance While Operating on the Overhead Ground Wires

    Directory of Open Access Journals (Sweden)

    Zheng Li

    2010-12-01

    Full Text Available This paper describes the development of a mobile robot capable of clearing such obstacles as counterweights, anchor clamps, and torsion tower. The mobile robot walks on overhead ground wires in 500KV power tower. Its ultimate purpose is to automate to inspect the defect of power transmission line. The robot with 13 motors is composed of two arms, two wheels, two claws, two wrists, etc. Each arm has 4 degree of freedom. Claws are also mounted on the arms. An embedded computer based on PC/104 is chosen as the core of control system. Visible light and thermal infrared cameras are installed to obtain the video and temperature information, and the communication system is based on wireless LAN TCP/IP protocol. A prototype robot was developed with careful considerations of mobility. The new sensor configuration is used for the claw to grasp the overhead ground wires. The bridge is installed in the torsion tower for the robot easy to cross obstacles. The new posture plan is proposed for obstacles cleaning in the torsion tower. Results of experiments demonstrate that the robot can be applied to execute the navigation and inspection tasks.

  15. 输电线路运维作业方法研究%Optimizing Method Study of Transmission Line Operation and Maintenance

    Institute of Scientific and Technical Information of China (English)

    吴正佳; 祝小琴; 罗月胜; 林攀

    2012-01-01

    针对目前电力企业输电线路运维作业中存在的线路护线人员单薄、效率低、成本高的问题,比较了采用传统运维方式和重点区域划分法运维方式对输电线路运维的优越性,最后提出了一种新的运维方式,即采用重点区域划分结合1+1运维模式,组织群众护线的运维优化方法,达到减少运维作业时间,提高运维作业效率,降低运维成本的目的.并以某输电公司的线路实际运维模式为例,验证了此方法的合理有效性,并指出该方法对提高输电线路运维效率的重要意义.%According to the present problems of protecting line personnel tenuity, low efficiency, high cost existing in transmission line operation and maintenance in China's electric power enterprises, the traditional operation and maintenance model and key region division operation and maintenance model are compared. And then, a new method of 1 +1 operation mode based on key region division is proposed; so that maintenance time is reduced; the lines operation efficiency is improved; the maintenance cost is lowered. Taking a certain practical line operation of some area for example, the rationality and effectiveness of this model have been verified, so as to make significance on improving the line operation and maintenance efficiency.

  16. Model and Solution for Single-group Maintenance Scheduling of Transmission Lines%输电线路单组检修计划模型及求解

    Institute of Scientific and Technical Information of China (English)

    于宏涛; 高立群; 李丽霞

    2012-01-01

    Aiming at the difficult problem of making transmission lines maintenance scheduling, a mode! Based on time restrains Travelling Salesman Problem(TSP) for transmission lines maintenance scheduling is presented. Taking account of importance of lines, and all line's maintenance time is in the range of its maintenance time-choice during the search, the target in searching for the best maintenance scheduling is the minimal economic loss that bases on failure rate. The scheduling is made by a novel improved ant colony algorithm, which can improve the ability of escaping from local optimal solution. Results show that the mode! And the algorithm are suitable for solving transmission lines maintenance problem.%为保证电力系统运行的安全性和可靠性,建立一种基于单组维修输电线路检修计划的时间约束旅行商问题模型.考虑线路重要性,同时保证线路检修时段始终控制在可选范围内,以可靠性理论中故障率为基础的经济损失风险最小为目标,设计出一种新的改进蚁群算法对模型进行求解,以便改善基本蚁群算法易于陷入局部最优解的缺点.实验结果表明,应用该算法的模型能够较好地解决输电线路检修计划的制定问题.

  17. On-line Excited-State Laser Spectroscopy of Trapped Short-Lived Ra$^+$ Ions

    CERN Document Server

    Versolato, O O; Wansbeek, L W; Berg, J E van den; van der Hoek, D J; Jungmann, K; Kruithof, W L; Onderwater, C J G; Sahoo, B K; Santra, B; Shidling, P D; Timmermans, R G E; Willmann, L; Wilschut, H W

    2010-01-01

    As an important step towards an atomic parity violation experiment in one single trapped Ra$^+$ ion, laser spectroscopy experiments were performed with on-line produced short-lived $^{212,213,214}$Ra$^+$ ions. The isotope shift of the $6\\,^2$D$_{3/2}$\\,-\\,$7\\,^2$P$_{1/2}$ and $6\\,^2$D$_{3/2}$\\,-\\,$7\\,^2$P$_{3/2}$ transitions and the hyperfine structure constant of the $7\\,^2$S$_{1/2}$ and $6\\,^2$D$_{3/2}$ states in $^{213}$Ra$^+$ were measured. These values provide a benchmark for the required atomic theory. A lower limit of $232(4)$ ms for the lifetime of the metastable $6\\,^2$D$_{5/2}$ state was measured by optical shelving.

  18. Chlorambucil plus rituximab with or without maintenance rituximab as first-line treatment for elderly chronic lymphocytic leukemia patients.

    Science.gov (United States)

    Foà, Robin; Del Giudice, Ilaria; Cuneo, Antonio; Del Poeta, Giovanni; Ciolli, Stefania; Di Raimondo, Francesco; Lauria, Francesco; Cencini, Emanuele; Rigolin, Gian Matteo; Cortelezzi, Agostino; Nobile, Francesco; Callea, Vincenzo; Brugiatelli, Maura; Massaia, Massimo; Molica, Stefano; Trentin, Livio; Rizzi, Rita; Specchia, Giorgina; Di Serio, Francesca; Orsucci, Lorella; Ambrosetti, Achille; Montillo, Marco; Zinzani, Pier Luigi; Ferrara, Felicetto; Morabito, Fortunato; Mura, Maria Angela; Soriani, Silvia; Peragine, Nadia; Tavolaro, Simona; Bonina, Silvia; Marinelli, Marilisa; De Propris, Maria Stefania; Starza, Irene Della; Piciocchi, Alfonso; Alietti, Alessandra; Runggaldier, Eva Josephine; Gamba, Enrica; Mauro, Francesca Romana; Chiaretti, Sabina; Guarini, Anna

    2014-05-01

    In a phase II trial, we evaluated chlorambucil and rituximab (CLB-R) as first-line induction treatment with or without R as maintenance for elderly chronic lymphocytic leukemia (CLL) patients. Treatment consisted of eight 28-day cycles of CLB (8 mg/m(2) /day, days 1-7) and R (day 1 of cycle 3, 375 mg/m(2) ; cycles 4-8, 500 mg/m(2) ). Responders were randomized to 12 8-week doses of R (375 mg/m(2) ) or observation. As per intention-to-treat analysis, 82.4% (95% CI, 74.25-90.46%) of 85 patients achieved an overall response (OR), 16.5% a complete response (CR), 2.4% a CR with incomplete bone marrow recovery. The OR was similar across Binet stages (A 86.4%, B 81.6%, and C 78.6%) and age categories (60-64 years, 92.3%; 65-69, 85.2%; 70-74, 75.0%; ≥75, 81.0%). CLB-R was well tolerated. After a median follow-up of 34.2 months, the median progression-free survival (PFS) was 34.7 months (95% CI, 33.1-39.5). TP53 abnormalities, complex karyotype, and low CD20 gene expression predicted lack of response; SF3B1 mutation and BIRC3 disruption low CR rates. IGHV mutations significantly predicted PFS. R maintenance tended towards a better PFS than observation and was safe and most beneficial for patients in partial response and for unmutated IGHV cases. CLB-R represents a promising option for elderly CLL patients. Copyright © 2014 Wiley Periodicals, Inc.

  19. Cross-market cost-effectiveness analysis of erlotinib as first-line maintenance treatment for patients with stable non-small cell lung cancer

    Directory of Open Access Journals (Sweden)

    Vergnenègre A

    2012-01-01

    Full Text Available Alain Vergnenègre1, Joshua A Ray2, Christos Chouaid3, Francesco Grossi4, Helge G Bischoff5, David F Heigener6, Stefan Walzer21Department of Pneumology, Hôpital du Cluzeau, Limoges, France; 2Global Health Economics and Strategic Pricing, F Hoffmann-La Roche Ltd, Basel, Switzerland; 3Respiratory Service, Hôpital Saint Antoine, Paris, France; 4Lung Cancer Unit, National Institute for Cancer Research, Genoa, Italy; 5Thoracic Oncology, Onkologie Thoraxklinik Heidelberg, Heidelberg, Germany; 6Department of Thoracic Oncology, Krankenhaus Großhansdorf, Großhansdorf, GermanyBackground: Platinum-doublet, first-line treatment of locally advanced or metastatic non-small cell lung cancer (NSCLC is limited to 4–6 cycles. An alternative strategy used to prolong the duration of first-line treatment and extend survival in metastatic NSCLC is first-line maintenance therapy. Erlotinib was approved for first-line maintenance in a stable disease population following results from a randomized, controlled Phase III trial comparing erlotinib with best supportive care. We aimed to estimate the incremental cost-effectiveness of erlotinib 150 mg/day versus best supportive care when used as first-line maintenance therapy for patients with locally advanced or metastatic NSCLC and stable disease.Methods: An economic decision model was developed using patient-level data for progression-free survival and overall survival from the SATURN (SequentiAl Tarceva in UnResectable NSCLC study. An area under the curve model was developed; all patients entered the model in the progression-free survival health state and, after each month, moved to progression or death. A time horizon of 5 years was used. The model was conducted from the perspective of national health care payers in France, Germany, and Italy. Probabilistic sensitivity analyses were performed.Results: Treatment with erlotinib in first-line maintenance resulted in a mean life expectancy of 1.39 years in all countries

  20. Studies Regarding the Development of Two Genetic Lines of Holstein Friesian Cows Differing in Mature Live Weight

    Directory of Open Access Journals (Sweden)

    Constantin Gavan

    2012-10-01

    Full Text Available To achieve optimal profitability in dairy production the type of cow farmed must be suitable for the productionsystem operated. Matching the right type of dairy cow to the dairying will become more important in the future asdairying systems became more diverse. This paper uses first results from current Simnic Holstein Friesiancomparison trial to project the type of cows that will best complement the systems that are developing today and inthe future. In 2004 the experimental herd of Holstein Friesian cows at ARDS Simnic Craiova provided thefoundation cows to develop two lines of cows differing in mature weight. Multiparous cows from the base herd wereblocked by parity, milk solids yield and live weight. Within each block, the heavier cows were inseminated withsemen material from bulls with higher breeding value for live weight, and the lighter cows were inseminated withsemen material from bulls with low breeding value for live weight. The 2 lines developed were „the genetic line ofSimnic Holstein Friesian with heavy live weight” (HF Simnic GVM and „the genetic line of Simnic HolsteinFriesian with light live weight” (HF Simnic GVm.

  1. Power line maintenance information system using low-power radio data transmission. Shodenryoku musen denso wo riyoshita sodensen hoshu joho system

    Energy Technology Data Exchange (ETDEWEB)

    Kanemaru, K.; Matsubara, R.; Kaito, J.; Toyota, S. (Hitachi Cable, Ltd., Tokyo (Japan))

    1994-05-20

    Currently in the major power transmission line, a composite fiber optic overhead ground wire (OPGW) is installed, and it is being made the best use as an information transmission line. When the various maintenance informations on the transmission lines can be collected and transmitted by utilizing this OPGW, there will be the benefits that an effective system for the maintenance work of the transmission lines can be constructed, the informations, which could not be obtained by a conventional patrol and tour inspection so far, could be all the time acquired highly accurately and more rapidly. In this report by considering a use of the radio transmission together with OPGW transmission, in order to solve the constraints on an information transmission in a power transmission line maintenance system by utilizing OPGW, the concrete radio transmission systems were proposed about each of interpolation method of the sensor signal transmission method and the OPGW data transmission system. Especially as for the sensor signal system, it was shown that, as a result of the quantitative investigation of a transmission efficiency taking account of the hidden terminal problems, an interpolating data transmission system through a low-power radio combined the slotted transmission timing with the carrier sensed multiple access (CSMA) system was superior. 8 refs., 7 figs., 6 tabs.

  2. Curecanti-Blue Mesa-Salida 115-kV transmission lines access roads rehabilitation, maintenance, and construction project. Environmental Assessment

    Energy Technology Data Exchange (ETDEWEB)

    1993-07-01

    Western Area Power Administration (Western) is a power marketing agency of the US Department of Energy, with jurisdiction in 15 western states. The Salt Lake City Area (SLCA) of Western performs the agency`s mission in parts of Colorado, New Mexico, Texas, Utah, Arizona, Wyoming, and Nevada. As part of its mission, Western owns, operates, and maintains a system of transmission lines for transmitting bulk electrical energy from points of generation to and between delivery points. Part of that system in southwestern Colorado includes the Blue Mesa-Curecanti and Blue Mesa-Salida 115-kV transmission lines. Western proposes to conduct maintenance and improve its access roads for these two transmission lines. This paper discusses the impacts to the existing environment as well as the environmental consequences resulting from the maintenance and construction that is proposed.

  3. Economic evaluation of first-line and maintenance treatments for advanced non-small cell lung cancer: a systematic review

    Directory of Open Access Journals (Sweden)

    Chouaïd C

    2014-12-01

    Full Text Available Christos Chouaïd,1 Perinne Crequit,2 Isabelle Borget,3 Alain Vergnenegre4 1Service de Pneumologie et de Pathologie Professionnelle, Centre Hospitalier Intercommunal Créteil et Université de Paris Est Créteil, Paris, France; 2Service de Pneumologie, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France; 3Service de Biostatistique et d’Epidémiologie, Institut Gustave Roussy, Villejuif, France; 4Unité d’Oncologie Thoracique et Cutanée, Centre Hospitalier Universitaire Limoges, Limoges, France Abstract: During these last years, there have been an increased number of new drugs for non-small cell lung cancer (NSCLC, with a growing financial effect on patients and society. The purpose of this article was to review the economics of first-line and maintenance NSCLC treatments. We reviewed economic analyses of NSCLC therapies published between 2004 and 2014. In first-line settings, in unselected patients with advanced NSCLC, the cisplatin gemcitabine doublet appears to be cost-saving compared with other platinum doublets. In patients with nonsquamous NSCLC, the incremental cost-effectiveness ratios (ICERs per life-year gained (LYG were $83,537, $178,613, and more than $300,000 for cisplatin-pemetrexed compared with, respectively, cisplatin-gemcitabine, cisplatin-carboplatin-paclitaxel, and carboplatin-paclitaxel-bevacizumab. For all primary chemotherapy agents, use of carboplatin is associated with slightly higher costs than cisplatin. In all the analysis, bevacizumab had an ICER greater than $150,000 per quality-adjusted life-year (QALY. In epidermal growth factor receptor mutated advanced NSCLC, compared with carboplatin-paclitaxel doublet, targeted therapy based on testing available tissue yielded an ICER of $110,644 per QALY, and the rebiopsy strategy yielded an ICER of $122,219 per QALY. Compared with the triplet carboplatin-paclitaxel-bevacizumab, testing and rebiopsy strategies had ICERs of $25,547 and $44,036 per QALY

  4. 基于蚁群算法输电线路检修计划的制定%Maintenance scheduling of transmission lines based on ant colony algorithm

    Institute of Scientific and Technical Information of China (English)

    于宏涛; 高立群; 李丽霞

    2011-01-01

    为了提高制定输电线路检修计划的工作效率,提出了一种输电线路检修计划模型.该模型为任务量均分的多旅行商问题模型,综合考虑了线路缺陷的严重程度和重要性,在保证线路检修时间始终控制在允许范围内,以可靠性理论中故障率为基础的经济损失风险最小为目标.应用了改进蚁群算法和基本蚁群算法对模型进行仿真比较,结果显示前者求解质量较好,这表明了改进蚁群算法能够改善基本蚁群算法易于陷入局部最优解的缺点.%In order to improve efficiency of making transmission lines maintenance scheduling, presented a model for transmission lines maintenance scheduling. The model based on a multiple traveling salesman problem of equal task, took account of defect severity and importance of lines. Treated the minimal economic loss based on failure rate as the target in searching for the best maintenance scheduling. Limited meanwhile all line' s maintenance time to the range of its maintenance time-choice during the search. Applied both an improved ant colony algorithm and conventional ant colony algorithm to the problem. By contrast, the improved ant colony algorithm was superior to conventional ant colony algorithm in quality. The simulation results show the improved ant colony algorithm can improve the ability of escaping from local optimal solution.

  5. 客运专线基础设施维修基地大机维修效率评价%Evaluation to maintenance efficiency of tamping machines in passenger special line infrastructure maintenance base

    Institute of Scientific and Technical Information of China (English)

    马良民; 王孟钧

    2011-01-01

    大型养路机械在我国铁路线路基础设施维修中的作用日益凸显,通过对大机维修效率内涵的界定,提炼出大机维修精干高效、经济适用和安全可靠的指导思想.进而建立客观全面的评价指标体系,采用数据包络分析法评价不同线路的大机维修效率.从业务管理、设备管理和现场管理3个方面找出效率损失的原因,提出相应对策建议,为客专维修基地提高大机维修效率探索新思路和新途径.%Tamping machines are playing a more and more important role in our country' s infrastructure maintenance in railway lines. Through the definition of its maintenance efficiency, an affordable, efficient, safe, and reliable guideline was obtained. An objective and comprehensive appraisal target system from which data enveloping analysis acceses different routes' maintenance efficiency was established. Some reasons of the loss of efficiency were found from three aspects of business management, equipment management and administration. Finally some corresponding measures and explore new ideas and new ways for maintenance base are proposed.

  6. Visual similarity is greater for line drawings of nonliving than living things: the importance of musical instruments and body parts.

    Science.gov (United States)

    Laws, Keith R; Gale, Tim M; Frank, Ray; Davey, Neil

    2002-01-01

    It has been argued that greater intra-category structural similarity for living things, and the subsequent "visual crowding," makes them more difficult to recognize and name for neurologically damaged individuals and normal subjects (Humphreys et al., 1988). Nevertheless, the precise meaning and quantification of structural similarity remains unclear, as does the rationale for why it necessarily should be greater for living things. We derived a new measure of visual overlap from the Snodgrass and Vanderwart corpus of line drawings: the degree of pixel overlap within subcategories (Euclidean distance: ED). Contrary to existing notions of visual crowding and extant measures of contour overlap, within-category ED indicated less within-category visual overlap for living things. Furthermore, musical instruments clustered with living things (having low overlap), while body parts clustered with nonliving things (having high overlap). These counter-intuitive findings accord with patient data and thus, provide evidence for the psychological reality and utility of ED.

  7. 特高压线路运行维护的问题分析%Problem Analysis of Uhv Line Operation Maintenance

    Institute of Scientific and Technical Information of China (English)

    任明凯

    2015-01-01

    对特高压输电线路运行维护特点进行分析,同时在此基础上对国内现阶段特高压线路的运行维护有关技术研究现状进行深入研究,制定相应的运行维护方案,有效提升国内电力系统特高压输电线路运行的可靠性与安全性,推动电力企业的进一步发展。%The paper analyzes the characteristics of uhv transmission line operation maintenance,at the same time,based on it,it deeply studies the operation of domestic uhv line current maintenance of the current related technology,and formu-lates corresponding operation maintenance plan,which effectively promotes the domestic power system the reliability and se-curity of the uhv transmission line operation and the further development of electric power enterprises.

  8. Live-Grid Operation and Maintenance of the 35 kV/121 MVA Superconducting Cable System

    Institute of Scientific and Technical Information of China (English)

    Huan-Huan Li; An-Lin Ren; Ying Xin; Hui Hong; Zhi-Li Chen; Lin-Na Shi

    2008-01-01

    A 33.5 m, 35 kV/121 MVA, three-phase, warm dielectric HTS power cable system was successfully installed and activated in China Southern Power Grid at the Puji substation in Kunming on April 19th of 2004, supplying electricity to four industrial customers (including two metallurgical refineries) and a residential population of about 100000. In this paper, we give an update on the operation and maintenance status of the system and comments on reliability issues. We conclude that the superconducting cable system is currently quite robust and feasible for particular utility applications, and it will be improved by advancement in cryogenic equipment and system technology.

  9. 220 kV同塔四回线路带电作业的探讨%Discussion of Live Work on 220 kV Same-tower-four-circuit Lines

    Institute of Scientific and Technical Information of China (English)

    胡伟; 李广帅

    2013-01-01

    With 220 kV same-tower-four-circuit HV transmission lines continuously put into operation in Hangzhou, the problems line maintenance by outage faces become increasingly visible. By investigation on safety distance for live work on 220 kV same-tower-four-circuit transmission lines, ways to enter into strong electric field,analysis on safety of live work, dangerous point and precautions,the paper discusses feasibility of live work on 220 kV same-tower-four-circuit transmission lines.%随着杭州地区220 kV同塔四回高压输电线路的不断投入运行,线路停电检修工作面临问题日益凸显。通过研究220 kV同塔架设四回输电线路带电作业的安全距离、进入强电场方法、带电作业安全性分析、危险点及预控措施分析等一系列关键问题,探讨了220 kV同塔架设四回输电线路带电作业的可行性。

  10. Group Maintenance Model of Automatic Production Line and Its Application%自动生产线的同步维修模型及实例研究

    Institute of Scientific and Technical Information of China (English)

    郑睿; 吕文元

    2011-01-01

    自动生产线故障停机时间长、停机费用高,其原因在于:设备种类多且相关联,存在各设备协同维修的难题.首先,寻求生产线故障时间和检查时间之间的平衡点,建立检查周期与总停机时间之间关系的目标函数.其次,借鉴同步维修的"对故障隐患集中式批处理,减少分散维修的停机时间"思想,以及时间延迟维修理论,建立生产线的同步维修模型,该模型利用生产线每天停机次数、每次停机时间及检查时发现的缺陷数,计算出合理的生产线检查周期,并以此为依据制定维修计划,实现"提高维修批量,减少生产线停机时间"的目标.最后,实例研究,收集某生产线近十年的故障记录数据,在分析生产流程、设备布局、各设备停机影响的基础上,提出对策指导生产线维修管理.%To solve the problem of long downtime and high cost of automatic production line, group maintenance model is put forward.Firstly, the target function is given, which describes the relation between inspection cycle and total downtime.Secondly, according to the delay time maintenance theory and the idea of group maintenance, namely reducing the total downtime by the means of batch maintenance, group maintenance model is established.Using data such as failure number occurred in production line, and the number of defects identified in PM, the established model can calculate the reasonable inspection cycle.Only with the calculated inspection cycle, the maintenance plan can be outlined, and the target of reducing total downtime by the means of maintenance batch will be realized.Finally, a case study is given.Failures record data in the past decade are collected.Some advices are presented, which is based on the analysis ofproduction flow, equipment layout, and the effect of equipments downtime as well.

  11. Transmission Line Construction Technology and Operational Management Maintenance Technology%输电线路施工技术和运行管理维护技术

    Institute of Scientific and Technical Information of China (English)

    王俊葳

    2015-01-01

    Transmission line construction project is an important part of power engineering, construction, and operation and maintenance of technical quality is directly related to the quality of the transmission line project, therefore, of great significance both for the security and stability of grid operation. Transmission Line Project construction techniques were analyzed and discussed the operational management and maintenance of the transmission line technology for the relevant officers.%输电线路施工工程是电力工程的重要组成部分,施工技术和运行维护质量直接关系到整个输电线路工程的质量,因此,二者对电网运行的安全和稳定具有十分重要的意义。对输电线路工程施工技术进行了分析,并探讨了输电线路运行管理维护技术,以供有关人员参考。

  12. The Maintenance Method of 500 kV and 220 kV Four-circuit Transmission Lines%500kV及220kV同塔四回线路检修作业方法

    Institute of Scientific and Technical Information of China (English)

    孙发国

    2011-01-01

    According to the higher tower, the more complex line arrangement, the more intense electric field distortion in four-circuit transmission lines, we measured the electric field and calculated induced voltage in maintained linesand researched the maintenance method on the four-circuit transmission lines. Living working and reparation in power cut is suggested, and corresponding protections are presented in this work.%针对同塔四回线路铁塔相对较高、导线布置相对复杂、电场畸变严重等实际情况,进行了电场测量和检修感应电压的计算,对其检修作业方法进行了研究,建议采用带电作业或者停电检修两种方式进行检修,提出了相应的保护措施。

  13. 天津地铁线路设备委外维修管理探讨%Discussion on Outsourcing Maintenance Management of Tianjin Subway Line Equipment

    Institute of Scientific and Technical Information of China (English)

    李金良; 莫佳琪

    2014-01-01

    针对天津地铁工务全委外维修体制,根据实际管理经验,系统阐述天津地铁线路轨道系统合同监管及技术检查管理重点。并结合管理经验,分析总结目前地铁工务委外维修体制的不足之处。%In view of the Tianjin Metro outsourcing maintenance system, according to the practical management experience, the paper elaborates the Tianjin subway line rail system check contract regulation and technical management. And combined with management experience, the deficiency of metro works outsourcing maintenance system is analyzed.

  14. Aircraft Ground Operation, Servicing, Fluid Lines and Fittings, Mechanics Privileges and Limitations, and Maintenance Publications, Forms and Records (Course Outline), Aviation Mechanics 1 (Power and Frame): 9073.02.

    Science.gov (United States)

    Dade County Public Schools, Miami, FL.

    The course outline consists of five instructional blocks of several units each: (1) Aircraft Ground Operation and Servicing; (2) Fluid Lines and Fittings; (3) Mechanics Requirements, Privileges and Limitations; (4) Maintenance Publications; and, (5) Maintenance forms and Records. It is a basic course of knowledge and skills necessary to any…

  15. Article 220 kv Transmission Line Maintenance Common Faults%探析220kV 输电线路检修常见故障

    Institute of Scientific and Technical Information of China (English)

    佘佳玺

    2015-01-01

    输电线路是电力输送的重要组成部分,在铺线过程中,因为铺线线路长、铺线范围广、高空架线等原因,存在着很多环境因素、气候因素以及外力因素等影响,容易发生一些故障。针对输电线路检修中发生的雷击故障、鸟害故障、天气灾害故障、污闪故障、外力破坏故障进行分析,提出了相应的处理方式,以保证输电线路正常的电力输送。%The transmission line is an important part of the electricity,in the process of spread line,because the lay lines long, wide range of shop line,on top,there are many environmental factors,climate factors and outside factors influence,some are prone to failure.Aiming at lightning failures happened in transmission line maintenance,failure of the sound,the weather disasters,pollution flashover failure,external force damage,failure analysis,put forward the corresponding treatment,so as to guarantee the normal electricity transmission lines.

  16. Discussion on operation and maintenance of cable TV cable line%有线电视光缆线路的运行维护工作探讨

    Institute of Scientific and Technical Information of China (English)

    余海

    2015-01-01

    Optical fiber optic cable transmission has excellent performance,which is widely used in cable TV signal transmission. With the devel-opment of China's cable TV,cable channel number also is increasing,its function has also been deep development and utilization,take what kind of measures to effectively carries on the maintenance of cable television cable lines,and become the relevant staff to ponder the question. In this paper, the author combined with their own many years engaged in cable TV cable line maintenance work experience,a brief discussion on how to do a good job of cable TV cable line maintenance work.%有线电视光缆的传输性能较好,近年来在广播电视信号传输中也得到了非常普遍的应用,随着当前我国广播电视事业的飞速发展,有线电视的相关的功能也有了进一步的开发与利用。那么,选择何种方式来对有线电视光缆线路进行维护,成为了摆在广电工作人员面前的一个重要课题。现结合笔者实际工作经验,就几种有线电视光缆线路的运行维护工作进行了探讨。

  17. Resistance to prooxidant agent paraquat in the short- and long-lived lines of the seed beetle (Acanthoscelides obtectus).

    Science.gov (United States)

    Lazarević, Jelica; Dorđević, Mirko; Stojković, Biljana; Tucić, Nikola

    2013-04-01

    In the present study we test whether variation in resistance to paraquat (PQ), a free radical generator, correlates with variation in longevity in two sets of seed beetles (Acanthoscelides obtectus) experimental lines that were selected either for early reproduction and short-life or late reproduction and long-life. Long-lived late reproduction lines (L) showed increased resistance to PQ, while opposite was true for short-lived early reproduction line (E). Striking outcome of the selection for early and late reproduction in A. obtectus is asymmetry of responses to alternate mating schedules. The intensity of response depended on selection regime, sex and PQ dose. Evolution of longevity and PQ resistance was faster in L than E selection regime, and in females than males. To understand how age-specific mortality rates are affected by PQ we decomposed post-stress mortality data (using Gompertz mortality model) into initial mortality rate, which reflects basal vulnerability to stresses and age-specific mortality rate, which concerns the rate of increase in stress vulnerability, i.e. the rate of senescence. By estimating the parameters of the Gompertz mortality model we have shown that longevity reduction caused by PQ was the consequence of the increased baseline mortality rather than a speed up of the rate of ageing.

  18. Simple Formula of β+-Decay Half-Lives of Nuclei Far From β-Stable Line

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    We generalize the formula of β+-decay half-lives [Phys. Rev. C 73 (2006) 014305] to include all available data of nuclei far from the β-stable line. Good agreement with experimental data is obtained by taking into account the even-odd (e-o) effect. It is shown that the e-o effect on β+-decay half-life is apparent for the allowed β+-transition,whereas it is not apparent for the first and second forbidden transitions. This demonstrates that the allowed β+-transition is more sensitive to the nuclear even-odd effect than the forbidden β+-transition. The underlying physics is discussed.This formula can be used to predict the β+-decay half-lives of the nuclei far from β-stability. It is useful to experimental physicists for analyzing the data of β+-decay.

  19. Maintenance of mixed mating after the loss of self-incompatibility in a long-lived perennial herb.

    Science.gov (United States)

    Voillemot, Marie; Pannell, John R

    2017-01-01

    Many hermaphroditic plants avoid self-fertilization by means of a molecular self-incompatibility (SI) system, a complex trait that is difficult to evolve but relatively easy to lose. Loss of SI is a prerequisite for an evolutionary transition from obligate outcrossing to self-fertilization, which may bring about rapid changes in the genetic diversity and structure of populations. Loss of SI is also often followed by the evolution of a 'selfing syndrome', with plants having small flowers, little nectar and few pollen grains per ovule. Here, we document the loss of SI in the long-lived Spanish toadflax Linaria cavanillesii, which has led to mixed mating rather than a transition to a high rate of selfing and in which an outcrossing syndrome has been maintained. We performed crosses within and among six populations of L. cavanillesii in the glasshouse, measured floral traits in a common-garden experiment, performed a pollen-limitation experiment in the field and conducted population genetic analyses using microsatellites markers. Controlled crosses revealed variation in SI from fully SI through intermediate SI to fully self-compatible (SC). Flowers of SC individuals showed no evidence of a selfing syndrome. Although the SC population of L. cavanillesii had lower within-population genetic diversity than SI populations, as expected, population differentiation among all populations was extreme and represents an FST outlier in the distribution for both selfing and outcrossing species of flowering plants. Together, our results suggest that the transition to SC in L. cavanillesii has probably been very recent, and may have been aided by selection during or following a colonization bottleneck rather than in the absence of pollinators. We find little indication that the transition to SC has been driven by selection for reproductive assurance under conditions currently prevailing in natural populations. © The Author 2016. Published by Oxford University Press on behalf of the

  20. Walking the line between the possible and the ideal: lived experiences of neonatal nurses

    DEFF Research Database (Denmark)

    Aagaard, Hanne; Hall, Elisabeth; Kronborg, Hanne

    2011-01-01

    . London, St. George Hospital Juni 2011 Objective: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse after developmental care is introduced in the unit. Methods: The study was designed as a qualitative interview study with a hermeneuticphenom...... and deserve to be included in nurses’ and nurse leaders’ discussion about developmental and family centred neonatal care........ London, St. George Hospital Juni 2011 Objective: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse after developmental care is introduced in the unit. Methods: The study was designed as a qualitative interview study...... with a hermeneuticphenomenological approach. Participants were seven neonatal nurses working in an 18-bed level 2 and 3 neonatal unit at a tertiary university hospital in Denmark. Developmental care was recently introduced in the unit, parents spend many hours a day with their baby and stay overnight in guestrooms at the hospital...

  1. Walking the line between the possible and the ideal: Lived experiences of neonatal nurses

    DEFF Research Database (Denmark)

    Aagaard, Hanne; Hall, Elisabeth; Kronborg, Hanne

    2012-01-01

    Middelfart, Børnesygeplejerskers Landskonference, Maj 2012 Objective: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse after developmental care is introduced in the unit. Methods: The study was designed as a qualitative interview study with ...... and deserve to be included in nurses’ and nurse leaders’ discussion about developmental and family centred neonatal care.......Middelfart, Børnesygeplejerskers Landskonference, Maj 2012 Objective: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse after developmental care is introduced in the unit. Methods: The study was designed as a qualitative interview study...... with a hermeneuticphenomenological approach. Participants were seven neonatal nurses working in an 18-bed level 2 and 3 neonatal unit at a tertiary university hospital in Denmark. Developmental care was recently introduced in the unit, parents spend many hours a day with their baby and stay overnight in guestrooms at the hospital...

  2. Walking the line between the possible and the ideal: lived experiences of neonatal nurses

    DEFF Research Database (Denmark)

    Aagaard, Hanne; Hall, Elisabeth; Kronborg, Hanne

    2011-01-01

    . London, St. George Hospital Juni 2011 Objective: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse after developmental care is introduced in the unit. Methods: The study was designed as a qualitative interview study with a hermeneuticphenom....... London, St. George Hospital Juni 2011 Objective: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse after developmental care is introduced in the unit. Methods: The study was designed as a qualitative interview study...... with a hermeneuticphenomenological approach. Participants were seven neonatal nurses working in an 18-bed level 2 and 3 neonatal unit at a tertiary university hospital in Denmark. Developmental care was recently introduced in the unit, parents spend many hours a day with their baby and stay overnight in guestrooms at the hospital...

  3. Calculation and Analysis on Steady-State Induced Voltage During Maintenance Operation of Multi Parallel Circuits of EHV/UHVDC/UHVAC Transmission Lines%并行多回交直流输电线路检修作业时稳态感应电压计算与分析

    Institute of Scientific and Technical Information of China (English)

    张文杰; 张弓达; 岳灵平; 张瑞; 楼平; 周沛洪; 张晓琴

    2014-01-01

    Erecting multi circuits of AC and DC transmission lines in the same corridor can save the land resources, however there are electrostatic and electromagnetic couplings among multi circuits of AC and DC transmission lines. It is favorable for the safety of maintenance operation of these transmission lines to research the steady-state induction voltage of transmission lines parallelly erected in the corridor. Through the calculation by electromagnetic transient program (EMTP), a computation model of six UHVAC and EHVDC/UHVDC transmission lines parallelly erected in the corridor located in Huzhou, Zhejiang province is established;the influence due to the coupling between UHVAC lines and EHVDC/UHVDC lines are calculated; the amplitudes and distributions of electrostatic induction voltages and electromagnetic induction voltages during the live-line overhaul and power-off maintenance under the combination of different operating modes of UHVAC and EHVDC/UHVDC lines are analyzed. Analysis results show that the influence of the steady-state induction voltage among parallelly erected multi circuits of AC and DC transmission line on the live-line overhaul and power-off maintenance modes and tools specified in current operating instruction can be neglected.%同走廊架设多回交直流输电线路可节约土地资源,但多回交直流输电线路相互之间存在静电和电磁耦合。研究并行走廊内各回线路稳态感应有利于线路检修作业安全。通过电磁暂态计算程序建立湖州多回并行走廊内的6条超、特高压交直流输电线路计算模型,计算了特高压交流线路与超、特高压直流线路之间的耦合影响,分析了带电和停电检修作业时在交直流线路不同运行方式组合下各检修线路静电和电磁感应电压的幅值和分布。结果表明,湖州地区并行多回交直流线路之间稳态感应电压对目前规程规定的带电和停电检修作业方式和工具的影响可以不予考虑。

  4. Walking the line between the possible and the ideal: Lived experiences of neonatal nurses

    DEFF Research Database (Denmark)

    Aagaard, Hanne; Hall, Elisabeth; Kronborg, Hanne

    2012-01-01

    Middelfart, Børnesygeplejerskers Landskonference, Maj 2012 Objective: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse after developmental care is introduced in the unit. Methods: The study was designed as a qualitative interview study...... with a hermeneuticphenomenological approach. Participants were seven neonatal nurses working in an 18-bed level 2 and 3 neonatal unit at a tertiary university hospital in Denmark. Developmental care was recently introduced in the unit, parents spend many hours a day with their baby and stay overnight in guestrooms at the hospital...

  5. Explore the Technical and Maintenance of Transmission Lines Lightning Protection Measures%输电线路防雷技术及维护措施探讨

    Institute of Scientific and Technical Information of China (English)

    郭志刚

    2014-01-01

    电力资源对社会的进步和发展起着非常大的促进作用。我国地域广阔,输电线路十分复杂,在对电力输电线路产生影响的诸多因素中,雷击是影响输电线路安全的关键。结合学习和工作实践经验,对输电线路防雷技术及其维护措施进行了分析,并提出了粗浅的建议。%Electric power resource of social progress and development plays a great role in promoting. China's vast, transmission lines is very complex, many factors have an impact on electricity transmission lines, and lightning is the key to safe power transmission line impact. Combining study and work experience, technology and transmission lines lightning maintenance measures were analyzed, and made superficial recommendations.

  6. BDNF-TrkB axis regulates migration of the lateral line primordium and modulates the maintenance of mechanoreceptor progenitors.

    Directory of Open Access Journals (Sweden)

    Eugene V Gasanov

    Full Text Available BDNF and its specialized receptor TrkB are expressed in the developing lateral line system of zebrafish, but their role in this organ is unknown. To tackle this problem in vivo, we used transgenic animals expressing fluorescent markers in different cell types of the lateral line and combined a BDNF gain-of-function approach by BDNF mRNA overexpression and by soaking embryos in a solution of BDNF, with a loss-of-function approach by injecting the antisence ntrk2b-morpholino and treating embryos with the specific Trk inhibitor K252a. Subsequent analysis demonstrated that the BDNF-TrkB axis regulates migration of the lateral line primordium. In particular, BDNF-TrkB influences the expression level of components of chemokine signaling including Cxcr4b, and the generation of progenitors of mechanoreceptors, at the level of expression of Atoh1a-Atp2b1a.

  7. Zebrafish transgenic line huORFZ is an effective living bioindicator for detecting environmental toxicants.

    Directory of Open Access Journals (Sweden)

    Hung-Chieh Lee

    Full Text Available Reliable animal models are invaluable for monitoring the extent of pollution in the aquatic environment. In this study, we demonstrated the potential of huORFZ, a novel transgenic zebrafish line that harbors a human upstream open reading frame of the chop gene fused with GFP reporter, as an animal model for monitoring environmental pollutants and stress-related cellular processes. When huORFZ embryos were kept under normal condition, no leaked GFP signal could be detected. When treated with hazardous chemicals, including heavy metals and endocrine-disrupting chemicals near their sublethal concentrations (LC50, huORFZ embryos exhibited different tissue-specific GFP expression patterns. For further analysis, copper (Cu2+, cadmium (Cd2+ and Chlorpyrifos were applied. Cu2+ triggered GFP responses in skin and muscle, whereas Cd2+ treatment triggered GFP responses in skin, olfactory epithelium and pronephric ducts. Moreover, fluorescence intensity, as exhibited by huORFZ embryos, was dose-dependent. After surviving treated embryos were returned to normal condition, survival rates, as well as TUNEL signals, returned to pretreatment levels with no significant morphological defects observed. Such results indicated the reversibility of treatment conditions used in this study, as long as embryos survived such conditions. Notably, GFP signals decreased along with recovery, suggesting that GFP signaling of huORFZ embryos likely reflected the overall physiological condition of the individual. To examine the performance of the huORFZ line under real-world conditions, we placed huORFZ embryos in different river water samples. We found that the huORFZ embryos correctly detected the presence of various kinds of pollutants. Based on these findings, we concluded that such uORFchop-based system can be integrated into a first-line water alarm system monitoring the discharge of hazardous pollutants.

  8. Wood pole overhead lines

    CERN Document Server

    Wareing, Brian

    2005-01-01

    This new book concentrates on the mechanical aspects of distribution wood pole lines, including live line working, environmental influences, climate change and international standards. Other topics include statutory requirements, safety, profiling, traditional and probabilistic design, weather loads, bare and covered conductors, different types of overhead systems, conductor choice, construction and maintenance. A section has also been devoted to the topic of lightning, which is one of the major sources of faults on overhead lines. The book focuses on the effects of this problem and the strate

  9. Isotope shift calculations for D lines of stable and short-lived lithium nuclei

    Science.gov (United States)

    Yu, Geng-Hua; Zhao, Peng-Yi; Xu, Bing-Ming; Yang, Wei; Zhu, Xiao-Ling

    2016-11-01

    The isotope shifts (ISs) for the 2s2S1/2 to 2p2P J (J = 1/2, 3/2) transitions of the lithium nuclei including the stable and short-lived isotopes are calculated based on the multi-configuration Dirac-Hartree-Fock method and the relativistic configuration interaction approach. The results are in good agreement with the previous theoretical and experimental results within a deviation less than 0.05%. The methods used here could be applied to the IS calculations for other heavier Li-like ions and few-electron systems. Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 11304093), the Fund of the Scientific Research Foundation of Sichuan Provincial Department of Education, China (Grant No. 15ZB0386), and the Fund of the 1315 Project of Chengdu University, China (Grant No. 2081915041).

  10. An On-Line Oxygen Forecasting System for Waterless Live Transportation of Flatfish Based on Feature Clustering

    Directory of Open Access Journals (Sweden)

    Yongjun Zhang

    2017-09-01

    Full Text Available Accurate prediction of forthcoming oxygen concentration during waterless live fish transportation plays a key role in reducing the abnormal occurrence, increasing the survival rate in delivery operations, and optimizing manufacturing costs. The most effective ambient monitoring techniques that are based on the analysis of historical process data when performing forecasting operations do not fully consider current ambient influence. This is likely lead to a greater deviation in on-line oxygen level forecasting in real situations. Therefore, it is not advisable for the system to perform early warning and on-line air adjustment in delivery. In this paper, we propose a hybrid method and its implementation system that combines a gray model (GM (1, 1 with least squares support vector machines (LSSVM that can be used effectively as a forecasting model to perform early warning effectively according to the dynamic changes of oxygen in a closed system. For accurately forecasting of the oxygen level, the fuzzy C-means clustering (FCM algorithm was utilized for classification according to the flatfish’s physical features—i.e., length and weight—for more pertinent training. The performance of the gray model-particle swarm optimization-least squares support vector machines (GM-PSO-LSSVM model was compared with the traditional modeling approaches of GM (1, 1 and LSSVM by applying it to predict on-line oxygen level, and the results showed that its predictions were more accurate than those of the LSSVM and grey model. Therefore, it is a suitable and effective method for abnormal condition forecasting and timely control in the waterless live transportation of flatfish.

  11. Cancer cluster among young Indian adults living near power transmission lines in Bom Jesus do Tocantins, Pará, Brazil

    Directory of Open Access Journals (Sweden)

    Sergio Koifman

    Full Text Available A case study was carried out to explore the occurrence of a cancer cluster in 1992 among young indian adults living in an Amazonian village near two 500 kV power transmission lines that began operating a decade ago. Current blood levels of DDT and organophosphorus pesticides and metal levels in hair samples were measured. Extremely low magnetic field exposure was determined during current daily activities carried out by the Indian villagers. Taking into account the cancer incidence rates in different Brazilian cities, the probability of the occurrence of this cluster by chance was considered remote (p< 0.003, Poisson distribution. High blood levels of p,p'-DDT (median levels ranging from 26 to 58 ppb were observed. As a whole, this community showed a pattern of low exposure to organophosphorus pesticides, and high recent exposure was only observed in a few blood samples. Continuous exposure to extremely low electromagnetic fields originated in the power transmission lines (which reached 95.0 mG under the lines was observed on several opportunities during daily activities carried out by Indian villagers. Further observational studies should evaluate the interaction between exposure to extremely low electromagnetic fields and prior exposure to tumor initiators in cancer development.

  12. Cancer cluster among young Indian adults living near power transmission lines in Bom Jesus do Tocantins, Pará, Brazil

    Directory of Open Access Journals (Sweden)

    Koifman Sergio

    1998-01-01

    Full Text Available A case study was carried out to explore the occurrence of a cancer cluster in 1992 among young indian adults living in an Amazonian village near two 500 kV power transmission lines that began operating a decade ago. Current blood levels of DDT and organophosphorus pesticides and metal levels in hair samples were measured. Extremely low magnetic field exposure was determined during current daily activities carried out by the Indian villagers. Taking into account the cancer incidence rates in different Brazilian cities, the probability of the occurrence of this cluster by chance was considered remote (p< 0.003, Poisson distribution. High blood levels of p,p'-DDT (median levels ranging from 26 to 58 ppb were observed. As a whole, this community showed a pattern of low exposure to organophosphorus pesticides, and high recent exposure was only observed in a few blood samples. Continuous exposure to extremely low electromagnetic fields originated in the power transmission lines (which reached 95.0 mG under the lines was observed on several opportunities during daily activities carried out by Indian villagers. Further observational studies should evaluate the interaction between exposure to extremely low electromagnetic fields and prior exposure to tumor initiators in cancer development.

  13. Walking the line between the possible and the ideal: lived experiences of neonatal nurses

    DEFF Research Database (Denmark)

    Aagaard, Hanne; Hall, Elisabeth; Kronborg, Hanne

    2010-01-01

    København, EAPS Conference Okt. 2010 Background: Nurses working in neonatal intensive care units (NICUs) meet a handful of professional challenges and are nursing ever smaller and more vulnerable infants using technological devices and in addition they have to integrate parents in the care. Desig......-infant dyads. The meaning of body, time, space, and relationships are decisive and should be included in nurses’ and nurse leaders’ discussion about developmental and family-centred neonatal care.......København, EAPS Conference Okt. 2010 Background: Nurses working in neonatal intensive care units (NICUs) meet a handful of professional challenges and are nursing ever smaller and more vulnerable infants using technological devices and in addition they have to integrate parents in the care. Design......: A qualitative interview study with a hermeneutic-phenomenological approach. Aims: To investigate the lived experiences of neonatal nurses, that is, what it is like to be a neonatal nurse at the time when developmental care is introduced in the unit. Setting: An 18 bed level II-III neonatal unit at a tertiary...

  14. 输电线路施工技术及运行管理维护探讨%Transmission Line Construction and Operation Management and Maintenance Techniques Discussed

    Institute of Scientific and Technical Information of China (English)

    黄财源

    2014-01-01

    The construction technology and operational management as a power grid construction and operation is an important part, its quality is directly related to the safe operation of the entire power grid could. Construction of the transmission line maintenance and operation management techniques are discussed, in order to promote the level of power grid construction and operation.%施工技术和运行管理作为电网建设、运营中的重要环节,其质量的好坏直接关系到整个电网能否安全运行。对输电线路施工技术和运行管理维护进行探讨,以促进电网建设和运营水平。

  15. The status maintenance for electrical insulator of high voltage power transmission lines%高压输电线路绝缘子状态检修的研究

    Institute of Scientific and Technical Information of China (English)

    刘玉; 饶雪

    2013-01-01

    随着供电技术装备水平和管理水平的提高,定期检修的不足之处越来越凸显出来,亟需一种新的检修制度来弥补这种不足,这种新的检修方式就是状态检修.本文结合我国输配电线路主设备状态检修的具体实际,介绍了输配线路状态检修的内容,重点介绍了绝缘子的状态检修.%With the power supply technology and equipment and management level,lack of regular maintenance of the more prominent place in urgent need of a new maintenance system to compensate for this Kinds of lack of maintenance of this new way to condition-based maintenance.In this paper,the main transmission lines of the specific conditions of state maintenance equipment,introduces the state of maintenance of the transmission line content,especially the status maintenance of insulator.

  16. Analysis of Transmission Line Operation, Maintenance Techniques and Basic Ideas%简析输电线路运行、检修技术和基本思路

    Institute of Scientific and Technical Information of China (English)

    郑炳煌

    2014-01-01

    Driven by the rapid economic development, the state implemented a grid renovation project, transmission line maintenance work on a higher requirement. Inadequate maintenance of transmission lines combined with traditional modes exists for transmission lines running maintenance techniques were analyzed and discussed.%在经济快速发展的带动下,国家实施了电网改造工程,对输电线路的检修工作提出了更高的要求。结合传统输电线路检修模式中存在的不足,对输电线路运行检修技术进行了分析和探讨。

  17. Research on Special Maintenance Tool of Straight Line Tower Ground and OPGW Cable in Overhead Transmission Line%线路直线塔地线及光缆金具维护

    Institute of Scientific and Technical Information of China (English)

    杨军

    2014-01-01

    本文在对架空输电线路直线塔地线支架和地线、 OPGW光缆金具组装方式及杆塔荷载的分析计算基础上,结合机械设计基础理论,确定了初步的专用工具研制方案。通过自行购买材料、零部件,在加工、装配和试用过程中不断完善后,成功研制出一套地线、 OPGW光缆金具维护的专用工具。该专用工具通过在不同电压等级线路、荷载情况下的4次现场试用,完全满足对35 kV~500 kV线路通用通用直线塔地线、 OPGW光缆金具的维护工作,而且与传统的作业方法相比明显提高了作业安全性和工作效率。%Based on the basis of the calculation,combining with the basic mechanical design theory, and analysis of straight wire bracket and a ground wire,OPGW cable for overhead power transmission line and tower load, the special maintenance tool is pre-liminary designed. Through the purchase of materials, parts, continuous improvement in processing, assembly and trial process,successfully developed a set of wire,OPGW cable maintenance special tool. The special tool is through the field test for 4 times in different voltage grade line,load conditions,to meet the needs of 35 kV-500 kV line general linear tower wire,OPGW cable main-tenance work,and compared with the traditional operating method significantly improves the operation safety and efficiency.

  18. On the Operation State and Maintenance Management of the Current Overhead Transmission Line%试论目前架空输电线路状态运行与维护管理

    Institute of Scientific and Technical Information of China (English)

    许金明

    2014-01-01

    This paper analyzes the operation state and maintenance management status of the current overhead transmission line and describes the improvement countermeasures to improve the overall efficiency of the operation state and maintenance management of the overhead transmission line.%文章分析目前架空输电线路状态运行与维护管理基本现状,介绍了架空输电线路状态运行与维护管理完善对策,以期提高该架空输电线路状态运行与维护管理整体效率。

  19. Genetic parameters of feeding behavior traits and their relationship with live performance traits in modern broiler lines.

    Science.gov (United States)

    Howie, J A; Avendano, S; Tolkamp, B J; Kyriazakis, I

    2011-06-01

    Current selection goals in broiler breeding focus on the improvement of live performance traits, such as feed intake, BW, and feed conversion ratio (FCR). The use of electronic feeders allows measurement of feed intake of individuals housed in groups as well as the identification of different feeding behaviors. Feed intake can thus be split into underlying feeding behavior traits, allowing the estimation of genetic correlations and assessment of the genetic consequences of selecting for performance traits on feeding behavior traits. To investigate the genetic relationships between performance traits and feeding behavior, data of visits to feeders by birds from 4 lines of broilers that differed in selection focus on growth and FCR were analyzed. Visits were recorded electronically and grouped into meals using an existing model for estimating meal criteria. Mean individual feeding behavior traits were then calculated across the entire test period (2 to 5 wk of age). Records were available for between 14,000 and 18,000 birds/line. Analyzed feeding behavior traits were meals per day, meal size, visits per meal, meal duration, nonfeeding time in meal, time feeding per day, proportion of meal spent feeding, feeding rate, and ADFI. Analyzed performance traits were 35-d BW, total feed intake over the entire test period, and FCR. All feeding behavior traits showed moderate to high heritabilities (0.24 to 0.57) but low genetic correlations with performance traits (-0.20 to 0.18), except for ADFI, which was moderately correlated with total intake on test (0.57) and highly correlated with FCR (0.91). The low genetic correlations indicate that the difference in selection intensity among lines for these performance traits has had limited effect on feeding behavior. Different feeding strategies that would result in favorable breeding values for FCR were identified, adding opportunities for further improvements in feed efficiency within and across environments.

  20. Research on High-voltage Transmission Line Operation and Maintenance Management%对高压输电线路运维管理的研究

    Institute of Scientific and Technical Information of China (English)

    刘子新

    2014-01-01

    With the development of economy and society, industrial electricity and electricity consumption are increasing;therefore, we must pay attention to the maintenance of high voltage transmission lines run management. Doing work related to the management, to ensure the normal operation of high voltage transmission lines, it is possible for the development of people's life, work and social economy to lay a good foundation.%随着经济社会的不断发展,工业用电和生活用电都在不断增加,所以,必须要重视高压输电线路的运行维护管理工作。做好相关的管理工作,确保高压输电线路的正常运行,能够为人们的生活、工作和社会经济的发展奠定良好的基础。

  1. Living near overhead high voltage transmission power lines as a risk factor for childhood acute lymphoblastic leukemia: a case-control study.

    Science.gov (United States)

    Sohrabi, Mohammad-Reza; Tarjoman, Termeh; Abadi, Alireza; Yavari, Parvin

    2010-01-01

    This study aimed to investigate association of living near high voltage power lines with occurrence of childhood acute lymphoblastic leukemia (ALL). Through a case-control study 300 children aged 1-18 years with confirmed ALL were selected from all referral teaching centers for cancer. They interviewed for history of living near overhead high voltage power lines during at least past two years and compared with 300 controls which were individually matched for sex and approximate age. Logistic regression, chi square and paired t-tests were used for analysis when appropriate. The case group were living significantly closer to power lines (Plines (Plines against more than 600 meters. This ratio estimated as 9.93 (95%CI: 3.47 to 28.5) for 123 KV, 10.78 (95%CI: 3.75 to 31) for 230 KV and 2.98 (95%CI: 0.93 to 9.54) for 400 KV lines. Odds of ALL decreased 0.61 for every 600 meters from the nearest power line. This study emphasizes that living close to high voltage power lines is a risk for ALL.

  2. LINES

    Directory of Open Access Journals (Sweden)

    Minas Bakalchev

    2015-10-01

    Full Text Available The perception of elements in a system often creates their interdependence, interconditionality, and suppression. The lines from a basic geometrical element have become the model of a reductive world based on isolation according to certain criteria such as function, structure, and social organization. Their traces are experienced in the contemporary world as fragments or ruins of a system of domination of an assumed hierarchical unity. How can one release oneself from such dependence or determinism? How can the lines become less “systematic” and forms more autonomous, and less reductive? How is a form released from modernistic determinism on the new controversial ground? How can these elements or forms of representation become forms of action in the present complex world? In this paper, the meaning of lines through the ideas of Le Corbusier, Leonidov, Picasso, and Hitchcock is presented. Spatial research was made through a series of examples arising from the projects of the architectural studio “Residential Transformations”, which was a backbone for mapping the possibilities ranging from playfulness to exactness, as tactics of transformation in the different contexts of the contemporary world.

  3. Optimizing Study of Transmission Line Operation and Maintenance Based on Evaluation Theory%基于测评理论的线路运维作业方式优化研究

    Institute of Scientific and Technical Information of China (English)

    吴正佳; 任芬芬; 张成; 祝小琴

    2011-01-01

    针对目前我国电力企业输电线路运维作业中人员配置不合理、运维效率低下等问题,提出一种优化的基于测评理论的线路运维作业方式.该方式采用统计学中的测评矩阵理论、机会成本理论和人力资源优化配置理论,并结合某电力公司现有运维作业方式,构建了一种基于测评矩阵的输电线路运维作业优化模型.该电力公司线路运维作业验证实例表明:模型合理有效,实现了实际线路运维配置个人利用率最高和系统整体利益最大化,极大地提高了输电线路的运维效率.该方法在输电线路运维、高校人员配置等方面具有潜在的应用价值.%For the problems of unreasonable staffing and low efficiency of transmission line operation and maintenance operations in most electric power enterprises in China recently, an optimized method of the transmission line operation and maintenance based on evaluation theory has been put forward. We have established an optimized model of the transmission line operation and maintenance with this method which has combined with evaluation matrix theory and opportunity cost theory and human resources optimization allocation based on the present transmission line operation and maintenance in a certain electric power enterprise. The validation examples of the transmission line operation and maintenance in this electric power enterprise show that this optimized model, which can realize the highest personal utilization rate and maximized profit of overall system, has advantages of not only rationality and effectiveness, but also a much higher efficiency of the transmission line operation and maintenance. It can be expected that this method will be of potential application value in various fields, such as transmission line operation and maintenance and college staff configuration.

  4. Long-term follow-up of rituximab plus first-line mitoxantrone, chlorambucil, prednisolone and interferon-alpha as maintenance therapy in follicular lymphoma.

    Science.gov (United States)

    Herold, Michael; Scholz, Christian W; Rothmann, Frank; Hirt, Carsten; Lakner, Volker; Naumann, Ralph

    2015-09-01

    The randomised, controlled OSHO#39 study showed promising results using first-line mitoxantrone, chlorambucil and prednisolone (MCP) chemotherapy plus rituximab in patients with advanced symptomatic follicular lymphoma (FL) in need of therapy. The aim of this long-term follow-up was to investigate whether clinical benefits are maintained after up to 9 years of observation. Following the 4-year follow-up of OSHO#39, 77 FL patients who received rituximab plus MCP (R-MCP) and 52 patients who received MCP (129 patients alive and not previously censored in total) were followed for 5 additional years in this prospective, non-interventional, observational study. For the efficacy analysis, data were jointly analysed with OSHO#39 data (FL intention-to-treat population: 105 patients R-MCP, 96 MCP). Patients not included in the 5-year follow-up were censored. For surviving patients, median follow-up was 102 months (R-MCP) and 87 months (MCP). Although median overall survival (OS) was not yet reached, OS was longer for patients with R-MCP compared with MCP (p = 0.0057), with 8-year-survival rates of 76.1 versus 55.9%. Further time-to-event data were substantially longer for the R-MCP group than for MCP alone: median progression-free survival (PFS) was 93.4 versus 34.9 months, and median event-free survival (EFS) 89.6 versus 26.5 months. Unplanned subanalyses of patients with and without interferon maintenance showed improved PFS and EFS without an impact on OS. The addition of rituximab to first-line MCP chemotherapy improves clinical outcomes in advanced FL patients and translates into long-term OS benefits. R-MCP remains a promising standard option for this patient group.

  5. Research for the Working Method of Live Replacing the L-type Insulator String on ±800kV DC Transmission Lines

    Science.gov (United States)

    Li, Jinliang; Wang, Zhigang; Lei, Dongyun; Yang, Miao; Xia, Zengming; Xiang, Yun; Yan, Yu; Liu, Zhiguo

    2017-07-01

    It would be hard to be repaired in the case of a power outage if the ±800kV ultra high voltage DC (UHVDC) transmission line was put into operation, so live working is the guarantee for its security and stability. Insulator strings of duplex L-type are widely used in UHVDC small angle towers. In the meantime, the tower structure and the insulator strings’ arrangement type is different than the V-type. In order to ensure the security and stability of the transmission line, this paper presents a method of live replacing the duplex L-type insulators based on the actual parameter of the UHVDC L tower type and develops apparatus as a complementary supporting by mechanics analysis. In order to ensure the safety of working staff, the safe distance and combined gap of the hanging basket method are checked. Safety precautions are also proposed in the paper by the calculation of body surface field strength of the persons doing live working in the finite element method. It is shown by the field application that the live working task of replacing the L-type insulator strings can be accomplished successfully by the method put forward in this paper, which provides reference for the following live working on the UHV transmission line.

  6. Weekly and every 2 weeks cetuximab maintenance therapy after platinum-based chemotherapy plus cetuximab as first-line treatment for non-small cell lung cancer: randomized non-comparative phase IIIb NEXT trial.

    Science.gov (United States)

    Heigener, David F; Pereira, José Rodrigues; Felip, Enriqueta; Mazal, Juraj; Manzyuk, Lyudmila; Tan, Eng Huat; Merimsky, Ofer; Sarholz, Barbara; Esser, Regina; Gatzemeier, Ulrich

    2015-06-01

    The First-Line Erbitux in Lung Cancer (FLEX) trial showed that the addition of cetuximab to chemotherapy followed by weekly cetuximab maintenance significantly improved survival in the first-line treatment of advanced non-small cell lung cancer (NSCLC). The phase IIIb NSCLC Erbitux Trial (NEXT) trial (NCT00820755) investigated the efficacy and safety of weekly and every 2 weeks cetuximab maintenance therapy in this setting. Patients were treated with platinum-based chemotherapy plus cetuximab, and those progression-free after four to six cycles were randomized to every 2 weeks (500 mg/m(2)) or weekly (250 mg/m(2)) cetuximab maintenance. Randomization was stratified for tumor histology and response status. The primary endpoint for a regimen would be reached if the lower boundary of the 95 % confidence interval (CI) for the 1-year survival rate exceeded 55 %. A planned 480 patients were to be randomized. However, enrollment was curtailed following a negative opinion from the European Medicines Agency with regard to the use of cetuximab in this setting. After combination therapy, 311/583 (53.3 %) patients without progression were randomized to maintenance therapy: 157 to every 2 weeks cetuximab and 154 to weekly cetuximab. Baseline characteristics were balanced between these groups and exposure to cetuximab was similar. The 1-year survival rate was 62.8 % (95 % CI, 54.7-70.0) for every 2 weeks cetuximab and 64.4 % (95 % CI, 56.2-71.4) for weekly cetuximab. Safety profiles were similar, manageable, and in line with expectations. Therefore, in patients with advanced NSCLC who were progression-free after four to six cycles of first-line chemotherapy plus cetuximab, weekly and every 2 weeks cetuximab maintenance therapy were associated with similar survival outcomes.

  7. Interval of Routine Maintenance and Maintenance Performance: A Literature Review

    Directory of Open Access Journals (Sweden)

    Au-Yong Cheong Peng

    2016-01-01

    Full Text Available In high-rise residential buildings, the quality of facilities management services is significant to the normal operation of the facilities. Unfortunately, lack of concern towards building maintenance, especially preventive maintenance, happens in domestic housing industry in Malaysia. Majority of the maintenance operations of condominiums suffer from lack of planning, lack of proactive maintenance plan, and lack of proper implementation. Thus, this paper reviews the implementation of preventive maintenance strategy, routine maintenance in specific. An extensive review of literature published in 1987 to 2014 is performed for the purpose of this research. The publications are sourced from journal articles, conference proceedings and books. The literature analysis confirms that the routine maintenance of facilities and building services is vital and it can be influential towards the maintenance performance. Subsequently, a theoretical framework is developed, which shows the relationship between routine maintenance of building facilities & services and maintenance performance. The building facilities & services are divided into two categories. They are essential facilities & services that ensure the safety, health, habitability, and operability of buildings; while value-added facilities & services deal with property value, return on investment, and quality living of buildings. Based on the findings, a future research is proposed, which aims to identify the appropriate routine of maintenance for the facilities and services in high-rise residential buildings to improve the maintenance performance.

  8. (Hydro-Quebec) Illustrated vocabulary representing power line transmission and distribution of electric power. 4, maintenance. (Hydro-Quebec) Vocabulaire illustre des lignes aeriennes de transport et de distribution d'electricite. Fascicule 4, entretien

    Energy Technology Data Exchange (ETDEWEB)

    1986-01-01

    This dictionary is intended to help standardize the terminology used among Hydro-Quebec personnel involved with power lines. This volume is concerned with words applicable to power line maintenance, and is arranged in six parts: poles and link sticks, adapters and related tools, safety devices, safety clothing and climbing equipment, measurement and control devices, and techniques. Virtually all of the terms are illustrated. English language equivalents are given, but these are not standardized terms and are included for informative purposes only. English and French indexes are included. 184 refs., 256 figs.

  9. 110 kV Overhead Transmission Line Operation and Maintenance Strategy%110kV架空输电线路运行的影响因素与运维策略

    Institute of Scientific and Technical Information of China (English)

    李志军

    2015-01-01

    This paper briefly analyzes the factors affecting the safe operation of 110 kV overhead transmission line, and puts forward the maintenance strategy to ensure the safe operation of 110 kV overhead transmission lines, in order to provide a reference for future work.%简要分析了影响110 kV架空输电线路安全运行的因素,并提出了保证110 kV架空输电线路安全运行的维护策略,以期为日后的相关工作提供参考.

  10. High rate of virological failure and low rate of switching to second-line treatment among adolescents and adults living with HIV on first-line ART in Myanmar, 2005-2015

    Science.gov (United States)

    Harries, Anthony D.; Kumar, Ajay M. V.; Oo, Myo Minn; Kyaw, Khine Wut Yee; Win, Than; Aung, Thet Ko; Min, Aung Chan; Oo, Htun Nyunt

    2017-01-01

    Background The number of people living with HIV on antiretroviral treatment (ART) in Myanmar has been increasing rapidly in recent years. This study aimed to estimate rates of virological failure on first-line ART and switching to second-line ART due to treatment failure at the Integrated HIV Care program (IHC). Methods Routinely collected data of all adolescent and adult patients living with HIV who were initiated on first-line ART at IHC between 2005 and 2015 were retrospectively analyzed. The cumulative hazard of virological failure on first-line ART and switching to second-line ART were estimated. Crude and adjusted hazard ratios were calculated using the Cox regression model to identify risk factors associated with the two outcomes. Results Of 23,248 adults and adolescents, 7,888 (34%) were tested for HIV viral load. The incidence rate of virological failure among those tested was 3.2 per 100 person-years follow-up and the rate of switching to second-line ART among all patients was 1.4 per 100 person-years follow-up. Factors associated with virological failure included: being adolescent; being lost to follow-up at least once; having WHO stage 3 and 4 at ART initiation; and having taken first-line ART elsewhere before coming to IHC. Of the 1032 patients who met virological failure criteria, 762 (74%) switched to second-line ART. Conclusions We found high rates of virological failure among one third of patients in the cohort who were tested for viral load. Of those failing virologically on first-line ART, about one quarter were not switched to second-line ART. Routine viral load monitoring, especially for those identified as having a higher risk of treatment failure, should be considered in this setting to detect all patients failing on first-line ART. Strategies also need to be put in place to prevent treatment failure and to treat more of those patients who are actually failing. PMID:28182786

  11. Application of Zinc Oxide Surge Arresters Live Test in Condition-based Maintenance Work%氧化锌避雷器带电检测在状态检修工作中的应用

    Institute of Scientific and Technical Information of China (English)

    闫尚斌; 唐领英

    2013-01-01

      随着电力系统的不断发展,对供电可靠性的要求越来越高,设备的试验由传统的定期试验转入状态检修试验。氧化锌避雷器在电网中有着重要的作用,它的带电测试,方法简单,数据准确,在状态检修中,发挥着重要的作用。本文主要介绍了氧化锌避雷器的带电测试原理,结合阳泉供电分公司实际应用,论证综合分析判断金属氧化锌避雷器带电测试数据。%With the continuous development of the electric power system, it has higher demand on the power supply reliability, so the test of the equipment is transferring from the traditional periodic tests to condition-based maintenance test. Zinc oxide surge arresters play an important role in the power grid. Because its live test method is simple and its data is accurate, it plays an important role in condition-based maintenance. This paper describes the principle of live test of zinc oxide surge arresters, combined with the practical application in Yangquan Electric Power Supply Branch, demonstrated and analyzed the live test data of the metal zinc oxide surge arresters.

  12. Application of New Yoke Plate Wire Grip for Transmission Line in Maintenance%输电线路用新型联板紧线器在检修工作中的应用

    Institute of Scientific and Technical Information of China (English)

    郑浩; 廖志斌; 李德波; 于启万

    2015-01-01

    Combined with the present situation of the maintenance of twin insulator strings of transmission line, the problems of the wire grip in the maintenance work are discussed , aiming at proposing a mainte-nance tactics to replace the twin insulator strings of 110kV and over transmission line tower , and resolving the problem of just using tool to fasten yoke plate , and a kind of wire grip which can fasten two yoke plates and string is researched .%结合输电线路双联串绝缘子检修现状,对输电线路检修工作中的紧线器存在的问题进行了探讨,旨在提出一种用于更换110千伏及以上输电线路杆塔双联串绝缘子的检修策略,解决使用工具单独固定联板的难题,并研究一种可以固定两个联板然后进行紧线的紧线器工具。

  13. Neonatal line as a linear evidence of live birth: Estimation of postnatal survival of a new born from primary tooth germs

    Directory of Open Access Journals (Sweden)

    Mahija Janardhanan

    2011-01-01

    Full Text Available Background: The presence of neonatal line indicates live birth and it is possible to estimate the exact period of survival of the infant in days by measuring the amount of postnatal hard tissue formation, and thus can be an evidence to the brutal act of infanticide. Materials and Methods: Primary tooth germs of both the arches were removed from the sockets of an infant who died few days after birth. Ground sections were made with hard tissue microtome. Decalcified sections were made from the crown of primary right mandibular canine and the sections were stained with hematoxylin and eosin. To visualize the neonatal line, the sections were subjected to light mocroscopy, polarized microscopy and scanning electron microscopy. A developing permanent molar from a one and a half year old boy and ten fully developed deciduous molars were used as controls. Results: The ground sections of all the developing tooth germs showed the presence of neonatal line and the analysis of enamel showed six distinct cross striations along the enamel rod length indicating the period of survival of the baby to be six days which was later confirmed with the hospital records. Conclusion: Neonatal line could be used as an evidence of infanticide. Accurate detection of neonatal line with advanced techniques could rewrite this supplementary evidence of infanticide into substantial evidence.

  14. 输电高压线路的检测与维护技术分析%Analysis on the Detection and Maintenance Technology of High Voltage Transmission Line

    Institute of Scientific and Technical Information of China (English)

    于洪召

    2015-01-01

    High-voltage transmission line, as an important component of the power grid, shoulders the responsibility of grid electricity transmission, so its health condition has an important influence to the safe and stable operation of power grid. In this paper, the content and techniques of the detection and maintenance of the high voltage transmission line are discussed, in order to provide reference for repair and maintenance of high voltage transmission lines.%输电高压线路作为电网的重要组成部分,担负着电网电能的传输重任,其健康状况对电网的安全稳定运行有着重要的影响。本文对输电高压线路检修与维护的内容和技术进行了探讨,以期为高压输电线路的检修与维护能够发挥积极的借鉴作用。

  15. Case Analysis of Maintenance for Optical Line Auto-Switching Protection System%光线路自动倒换保护系统维护案例分析

    Institute of Scientific and Technical Information of China (English)

    郑建春

    2013-01-01

    随着光线路自动倒换保护系统在各电信运营商干线传输网中的规模应用,如何跟进并有效地做好后期的维护成为需要探讨的新问题。介绍了光线路自动倒换保护系统的原理和组成,并着重结合实际情况对光线路自动倒换保护系统后期维护过程中遇到的一些典型案例进行了分析,分别给出了解决方案。%As optical line auto-switching protection systems are applied widely in the trunk transmission network of telecom operators, a new problem is caused about how to follow up and effectively make the later maintenance. Firstly, the principles of the optical line auto-switching protection system are introduced, and then combining with the actual situation, some typical cases in the later maintenance for optical line auto-switching protection system are analyzed, for which the solution is put forward.

  16. Induced Voltage and Current of 750kV Double Circuit Maintenance Transmission Line%750kV同塔双回线路检修线路感应电压、电流研究

    Institute of Scientific and Technical Information of China (English)

    曾林平; 文武; 阮江军; 张思寒

    2012-01-01

    Based on Lanzhou East-Pingliang 270km-long 750kV double circuit transmission line on the same tower, this paper researched the magnitude and distribution characteristics of the induced voltage of maintenance line and induced current of grounding wire in order to provide reference for the formulation of maintenance program and the selection of temporary grounding wire. The results earl also be applied in Pingliang-Qianxian 750kV double circuit transmission line.%以兰州东—平凉段270 km长的750 kV同塔双回输电线路为例,研究了检修线路的感应电压及临时接地线的感应电流的大小及分布特征,为检修方案的制定及临时接地线的选型提供参考,研究结果也可用于平凉—乾县段的750 kV同塔输电线路。

  17. Caenorhabditis elegans UNC-96 is a new component of M-lines that interacts with UNC-98 and paramyosin and is required in adult muscle for assembly and/or maintenance of thick filaments.

    Science.gov (United States)

    Mercer, Kristina B; Miller, Rachel K; Tinley, Tina L; Sheth, Seema; Qadota, Hiroshi; Benian, Guy M

    2006-09-01

    To gain further insight into the molecular architecture, assembly, and maintenance of the sarcomere, we have carried out a molecular analysis of the UNC-96 protein in the muscle of Caenorhabditis elegans. By polarized light microscopy of body wall muscle, unc-96 mutants display reduced myofibrillar organization and characteristic birefringent "needles." By immunofluorescent staining of known myofibril components, unc-96 mutants show major defects in the organization of M-lines and in the localization of a major thick filament component, paramyosin. In unc-96 mutants, the birefringent needles, which contain both UNC-98 and paramyosin, can be suppressed by starvation or by exposure to reduced temperature. UNC-96 is a novel approximately 47-kDa polypeptide that has no recognizable domains. Antibodies generated to UNC-96 localize the protein to the M-line, a region of the sarcomere in which thick filaments are cross-linked. By genetic and biochemical criteria, UNC-96 interacts with UNC-98, a previously described component of M-lines, and paramyosin. Additionally, UNC-96 copurifies with native thick filaments. A model is presented in which UNC-96 is required in adult muscle to promote thick filament assembly and/or maintenance.

  18. 3D Object Visual Tracking for the 220 kV/330 kV High-Voltage Live-Line Insulator Cleaning Robot

    Institute of Scientific and Technical Information of China (English)

    ZHANG Jian; YANG Ru-qing

    2009-01-01

    The 3D object visual tracking problem is studied for the robot vision system of the 220 kV/330 kV high-voltage live-line insulator cleaning robot. The SUSAN Edge based Scale Invariant Feature (SESIF) algorithm based 3D objects visual tracking is achieved in three stages: the first frame stage, tracking stage, and recovering stage. An SESIF based objects recognition algorithm is proposed to fred initial location at both the first frame stage and recovering stage. An SESIF and Lie group based visual tracking algorithm is used to track 3D object. Experiments verify the algorithm's robustness. This algorithm will be used in the second generation of the 220 kV/330 kV high-voltage five-line insulator cleaning robot.

  19. Research on on line monitoring and condition based maintenance technology of power primary equipment%电力一次设备的在线监测及其状态检修技术的研究

    Institute of Scientific and Technical Information of China (English)

    金兴武

    2016-01-01

    In this paper,the on-line monitoring and condition based maintenance technology of power primary equipment are studied,hoping that this research can promote the development of China's electric power industry to a certain extent.%本文就电力一次设备的在线监测及其状态检修技术进行了具体研究,希望这一研究能够在一定程度上推动我国电力事业的相关发展.

  20. SU-E-I-91: Quantitative Assessment of Early Hepatocellular Carcinoma and Cavernous Hemangioma of Live Using In-Line Phase-Contrast X-Ray Imaging

    Energy Technology Data Exchange (ETDEWEB)

    Duan, J [Department of Radiation Oncology, Shandong Tumor Hospital, Jinan (China)

    2015-06-15

    Purpose: To investigate the potential utility of in-line phase-contrast imaging (ILPCI) technique with synchrotron radiation in detecting early hepatocellular carcinoma and cavernous hemangioma of live using in vitro model system. Methods: Without contrast agents, three typical early hepatocellular carcinoma specimens and three typical cavernous hemangioma of live specimens were imaged using ILPCI. To quantitatively discriminate early hepatocellular carcinoma tissues and cavernous hemangioma tissues, the projection images texture feature based on gray level co-occurrence matrix (GLCM) were extracted. The texture parameters of energy, inertia, entropy, correlation, sum average, sum entropy, difference average, difference entropy and inverse difference moment, were obtained respectively. Results: In the ILPCI planar images of early hepatocellular carcinoma specimens, vessel trees were clearly visualized on the micrometer scale. Obvious distortion deformation was presented, and the vessel mostly appeared as a ‘dry stick’. Liver textures appeared not regularly. In the ILPCI planar images of cavernous hemangioma of live specimens, typical vessels had not been found compared with the early hepatocellular carcinoma planar images. The planar images of cavernous hemangioma of live specimens clearly displayed the dilated hepatic sinusoids with the diameter of less than 100 microns, but all of them were overlapped with each other. The texture parameters of energy, inertia, entropy, correlation, sum average, sum entropy, and difference average, showed a statistically significant between the two types specimens image (P<0.01), except the texture parameters of difference entropy and inverse difference moment(P>0.01). Conclusion: The results indicate that there are obvious changes in morphological levels including vessel structures and liver textures. The study proves that this imaging technique has a potential value in evaluating early hepatocellular carcinoma and cavernous

  1. Measurements of natural radiation exposure rates in various living environments. 4; Subway lines and underground shopping malls

    Energy Technology Data Exchange (ETDEWEB)

    Matsuda, Hideharu (Government Industrial Research Inst., Nagoya (Japan))

    1993-09-01

    The absorbed dose rates in air due to the terrestrial [gamma]-ray and the cosmic rays were measured on five subway lines in Nagoya City and in the underground shopping malls in Sakae and The Nagoya Station areas as the basic data to estimate the population dose. The mean values of the [gamma]-ray dose rates were 36.3 [+-] 7.3 nGy/h and 56.1 [+-] 6.4 nGy/h in the subway lines and in the underground shopping malls, respectively. It is inferred that the variation in the [gamma]-ray dose rate is mainly due to the difference in the concentration of natural radionuclides contained in the building materials of the subway tunnels and of the ceilings of the underground malls. The cosmic ray dose rates lay in the range of ca. 1/2-1/3 of the ground level value due to the shielding effect of the materials covering over the subway tunnels or the underground shopping malls. The mean value of the total dose rate for the gamma and the cosmic rays in the subway lines was about 50% and that in the underground shopping malls was about 20% lower than the value (87.3 nGy/h) on the ground in Nagoya City. (author).

  2. Paranal maintenance and CMMS experience

    Science.gov (United States)

    Montano, Nelson

    2004-10-01

    During the last four years of operations, low technical downtime has been one of the relevant records of the Paranal Observatory. From the beginning of the Very Large Telescope (VLT) project, European Southern Observatory (ESO) has considered the implementation of a proper maintenance strategy a fundamental point in order to ensure low technical down time and preserve the Observatory's assets. The implementation of the maintenance strategy was based on the following aspects: - Strong maintenance sense during the design stage. Line Replacement Unit (LRU) concept, standardization and modularity of the Observatory equipment - Creation of a dedicated team for Maintenance - The implementation of a Computerized Maintenance Management System After four operational years, the result of these aspects has exceeded the expectations; the Observatory has been operating with high availability under a sustainable strategy. The strengths of the maintenance strategy have been based on modern maintenance concepts applied by regular production companies, where any minute of down time involves high cost. The operation of the actual Paranal Maintenance System is based mainly on proactive activities, such as regular inspections, preventive maintenance (PM) and predictive maintenance (PdM) plans. Nevertheless, it has been necessary to implement a strong plan for corrective maintenance (CM). The Spare Parts Strategy has also been an important point linked to the Maintenance Strategy and CMMS implementation. At present, almost 4,000 items related to the Observatory spare parts are loaded into the CMMS database. Currently, we are studying the implementation of a Reliability Centered Maintenance (RCM) project in one of our critical systems The following document presents the actual status of the Paranal Maintenance Strategy and which have been the motivations to implement the established strategy.

  3. On-Line Real-Time Management Information Systems and Their Impact Upon User Personnel and Organizational Structure in Aviation Maintenance Activities.

    Science.gov (United States)

    1979-12-01

    AD-AO85 III NAVAL POSTGRADUATE SCHOOL MONTEREY CA F/6 15/7 ON-LINE REAL- TIME MANAGEMENT INFORMATION SYSTEMS AND THEIR IMPA--ETC(U) UNCLASSIIED N...34&’ 1111CIPENT’S CAT ALOG NUMS9m 14. TITLE (11141 ANIN~e. ON-LINE REAL- TIME MANAGEMENT INFORMATION Master’s Thesis SYSTEMS AND THEIR IMPACT UPON USER PER- p...9.GOO*g e,ft Or too#$ pasemabin. &-we. Approved for Public Release; Ditribution Unlimited ON-LINE REAL- TIME MANAGEMENT INFORMATION SYSTEMS AND THEIR

  4. Exploiting deterministic maintenance opportunity windows created by conservative engineering design rules that result in free time locked into large high-speed coupled production lines with finite buffers

    Directory of Open Access Journals (Sweden)

    Durandt, Casper

    2016-08-01

    Full Text Available Conservative engineering design rules for large serial coupled production processes result in machines having locked-in free time (also called ‘critical downtime’ or ‘maintenance opportunity windows’, which cause idle time if not used. Operators are not able to assess a large production process holistically, and so may not be aware that they form the current bottleneck – or that they have free time available due to interruptions elsewhere. A real-time method is developed to accurately calculate and display free time in location and magnitude, and efficiency improvements are demonstrated in large-scale production runs.

  5. Maintenance Therapy in IBD

    Science.gov (United States)

    ... Help Center Home > Resources > Maintenance Therapy Go Back Maintenance Therapy Email Print + Share The term "maintenance therapy" ... are referred to as "maintenance therapies." Why is Maintenance Therapy Needed in IBD? Both Crohn's disease and ...

  6. Maintenance Therapy in IBD

    Science.gov (United States)

    ... Help Center Home > Resources > Maintenance Therapy Go Back Maintenance Therapy Email Print + Share The term "maintenance therapy" ... are referred to as "maintenance therapies." Why is Maintenance Therapy Needed in IBD? Both Crohn's disease and ...

  7. SCR maintenance fundamentals

    Energy Technology Data Exchange (ETDEWEB)

    Wicker, K.; Staudt, J.

    2004-06-01

    The latest round of NOx emissions rules in the USA may afford power plant operators more flexibility in meeting air-quality standards. But complying with the rules can be somewhat confusing. Because a selective catalytic reduction (SCR) system is the first line of defence against excessive NOx emission, its proper maintenance is critical. This article explains how to monitor an SCR system for ammonia slip and manage its catalysts in a way that optimizes the system's performance. 9 figs.

  8. Centralized Analysis of Local Data, With Dollars and Lives on the Line: Lessons From The Home Radon Experience

    Energy Technology Data Exchange (ETDEWEB)

    Price, PhillipN.; Gelman, Andrew

    2014-11-24

    In this chapter we elucidate four main themes. The first is that modern data analyses, including "Big Data" analyses, often rely on data from different sources, which can present challenges in constructing statistical models that can make effective use of all of the data. The second theme is that although data analysis is usually centralized, frequently the final outcome is to provide information or allow decision-making for individuals. Third, data analyses often have multiple uses by design: the outcomes of the analysis are intended to be used by more than one person or group, for more than one purpose. Finally, issues of privacy and confidentiality can cause problems in more subtle ways than are usually considered; we will illustrate this point by discussing a case in which there is substantial and effective political opposition to simply acknowledging the geographic distribution of a health hazard. A researcher analyzes some data and learns something important. What happens next? What does it take for the results to make a difference in people's lives? In this chapter we tell a story - a true story - about a statistical analysis that should have changed government policy, but didn't. The project was a research success that did not make its way into policy, and we think it provides some useful insights into the interplay between locally-collected data, statistical analysis, and individual decision making.

  9. 220kV高压输电线路检修的危险点分析%220 kv High-voltage Transmission Line Maintenance of Dangerous Point Analysis

    Institute of Scientific and Technical Information of China (English)

    郭海涛

    2015-01-01

    在作业过程中危险可能存在的具体地点、具体方位及具体场所和具体动作称危险点。针对220kV高压输电线路中存在的危险点,对自然灾害、天气环境情况、线路自身缺陷、线路维修不善、输电线路铺设设计不合理等常见情况进行了科学分析,并提出了相应的预防控制办法。%In the process of operation risk the exact location of the possible,specific position and specific place and specific movement to call the danger point.In 220kv high-voltage transmission lines that exist in the dangerous points,to natural disasters,weather conditions,poor bird,line itself defects,line maintenance,violate compasses operation,artificial damage, transmission line laying design unreasonable,and other common situation has carried on the scientific analysis,and put forward the corresponding prevention and control measures.

  10. APPLICATION OF LASER THICKNESS MESUREMENT IN MAINTENANCE OF INNER LINING OF 150 t CONVERTER%激光测厚技术在 150 t转炉内衬维护中的应用

    Institute of Scientific and Technical Information of China (English)

    梁娟; 张响; 赵泽东; 胡庆利; 刘曙光

    2015-01-01

    The inner lining thickness of converter is one of the most important parameters to reflect if the con-verter works in a safe condition.The changing data of inner lining thickness of various part of No.2 converter during some one of campaigns is dynamically monitored with laser thickness gauge.According to the measur-ing data, some corresponding lining maintenance measures are adopted in different stages of the campaign, and after the campaign is over, the lining data of all part of converter all reaches over the limit thickness, the breakout accident is prevented.%转炉内衬厚度数据是反映转炉是否工作在安全状态的最重要参数之一. 通过激光测厚仪动态监测了2#转炉某一个炉役期内炉体各部位内衬厚度的变化数据,根据测量数据在炉役期的不同阶段采取相应措施进行炉衬维护,炉役结束后炉衬各部位的数据均达到极限厚度以上,防止了漏钢事故发生,满足了转炉冶炼要求,取得了较好的经济效益.

  11. Visual selection and maintenance of the cell lines with high plant regeneration ability and low ploidy level in Dianthus acicularis by monitoring with flow cytometry analysis.

    Science.gov (United States)

    Shiba, Tomonori; Mii, Masahiro

    2005-12-01

    Efficient plant regeneration system from cell suspension cultures was established in D. acicularis (2n=90) by monitoring ploidy level and visual selection of the cultures. The ploidy level of the cell cultures closely related to the shoot regeneration ability. The cell lines comprising original ploidy levels (2C+4C cells corresponding to DNA contents of G1 and G2 cells of diploid plant, respectively) showed high regeneration ability, whereas those containing the cells with 8C or higher DNA C-values showed low or no regeneration ability. The highly regenerable cell lines thus selected consisted of compact cell clumps with yellowish color and relatively moderate growth, suggesting that it is possible to select visually the highly regenerable cell lines with the original ploidy level. All the regenerated plantlets from the highly regenerable cell cultures exhibited normal phenotypes and no variations in ploidy level were observed by flow cytometry (FCM) analysis.

  12. A cost-effectiveness analysis of first-line induction and maintenance treatment sequences in patients with advanced nonsquamous non-small-cell lung cancer in France

    Directory of Open Access Journals (Sweden)

    Taipale K

    2017-08-01

    Full Text Available Kaisa Taipale,1 Katherine B Winfree,2 Mark Boye,2 Mickael Basson,3 Ghassan Sleilaty,4 James Eaton,5 Rachel Evans,5 Christos Chouaid6 1Global Patient Outcomes and Real World Evidence International, Oy Eli Lilly Finland AB, Helsinki, Finland; 2Global Patient Outcomes and Real World Evidence, Eli Lilly and Company, Indianapolis, IN, USA; 3Corporate Affairs, Lilly France, Neuilly-sur-Seine, 4Bio-Medicines Medical Affairs, Lilly France, Neuilly-sur-Seine, France; 5ICON Health Economics and Epidemiology, ICON Plc, Milton Park, UK; 6Thoracic Oncology, Service de Pneumologie, Centre Hospitalier Intercommunal Créteil, Créteil, France Background: Comparative effectiveness and cost-effectiveness data for induction–maintenance (I–M sequences for the treatment of patients with nonsquamous non-small-cell lung cancer (nsqNSCLC are limited because of a lack of direct evidence. This analysis aimed to compare the cost-effectiveness of I–M pemetrexed with those of other I–M regimens used for the treatment of patients with advanced nsqNSCLC in the French health-care setting. Materials and methods: A previously developed global partitioned survival model was adapted to the France-only setting by restricting treatment sequences to include 12 I–M regimens most relevant to France, and incorporating French costs and resource-use data. Following a systematic literature review, network meta-analyses were performed to obtain hazard ratios for progression-free survival (PFS and overall survival (OS relative to gemcitabine + cisplatin (induction sequences or best supportive care (BSC (maintenance sequences. Modeled health-care benefits were expressed as life-years (LYs and quality-adjusted LYs (QALYs (estimated using French EuroQol five-dimension questionnaire tariffs. The study was conducted from the payer perspective (National Health Insurance. Cost- and benefit-model inputs were discounted at an annual rate of 4%. Results: Base-case results showed pemetrexed

  13. AUTOMOTIVE DIESEL MAINTENANCE 1. UNIT XVII, I--MAINTAINING THE LUBRICATION SYSTEM--CUMMINS DIESEL ENGINE, II--UNIT INSTALLATION AND REMOVAL--DRIVE LINES.

    Science.gov (United States)

    Minnesota State Dept. of Education, St. Paul. Div. of Vocational and Technical Education.

    THIS MODULE OF A 30-MODULE COURSE IS DESIGNED TO DEVELOP AN UNDERSTANDING OF THE DIESEL ENGINE LUBRICATION SYSTEM AND THE PROCEDURES FOR REMOVAL AND INSTALLATION OF THE DRIVE LINE USED IN DIESEL ENGINE POWER DISTRIBUTION. TOPICS ARE (1) PROLONGING ENGINE LIFE, (2) FUNCTIONS OF THE LUBRICATING SYSTEM, (3) TRACING THE LUBRICANT FLOW, (4) DETERMINING…

  14. Maintenance-Ready Web Application Development

    Directory of Open Access Journals (Sweden)

    Ion IVAN

    2016-01-01

    Full Text Available The current paper tackles the subject of developing maintenance-ready web applications. Maintenance is presented as a core stage in a web application’s lifecycle. The concept of maintenance-ready is defined in the context of web application development. Web application maintenance tasks types are enunciated and suitable task types are identified for further analysis. The research hypothesis is formulated based on a direct link between tackling maintenance in the development stage and reducing overall maintenance costs. A live maintenance-ready web application is presented and maintenance related aspects are highlighted. The web application’s features, that render it maintenance-ready, are emphasize. The cost of designing and building the web-application to be maintenance-ready are disclosed. The savings in maintenance development effort facilitated by maintenance ready features are also disclosed. Maintenance data is collected from 40 projects implemented by a web development company. Homogeneity and diversity of collected data is evaluated. A data sample is presented and the size and comprehensive nature of the entire dataset is depicted. Research hypothesis are validated and conclusions are formulated on the topic of developing maintenance-ready web applications. The limits of the research process which represented the basis for the current paper are enunciated. Future research topics are submitted for debate.

  15. The Effectiveness of Various Attitude Indicator Display Sizes and Extended Horizon Lines on Attitude Maintenance in a Part-Task Simulation

    Science.gov (United States)

    Comstock, J. Raymond, Jr.; Jones, Leslie C.; Pope, Alan T.

    2003-01-01

    Spatial disorientation (SD) is a constant contributing factor to the rate of fatal aviation accidents. SD occurs as a result of perceptual errors that can be attributed in part to the inefficient presentation of synthetic orientation cues via the attitude indicator when external visual conditions are poor. Improvements in the design of the attitude indicator may help to eliminate instrumentation as a factor in the onset of SD. The goal of the present study was to explore several display concepts that may contribute to an improved attitude display. Specifically, the effectiveness of various display sizes, some that are used in current and some that are anticipated in future attitude displays that may incorporate Synthetic Vision Systems (SVS) concepts, was assessed. In addition, a concept known as an extended horizon line or Malcolm Horizon (MH) was applied and evaluated. Paired with the MH, the novel concept of a fixed reference line representing the central horizontal plane of the aircraft was also tested. Subjects performance on an attitude control task and secondary math workload task was measured across the various display sizes and conditions. The results, with regard to display size, confirmed the bigger is better concept, yielding better performance with the larger display sizes. A clear and significant improvement in attitude task performance was found with the addition of the extended horizon line. The extended or MH seemed to equalize attitude performance across display sizes, even for a central or foveal display as small as three inches in width.

  16. 浅谈高压输电线路的运行维护与防雷措施%On the Running Maintenance and Lightning Protection Measures of High-voltage Transmission Line

    Institute of Scientific and Technical Information of China (English)

    赵登

    2014-01-01

    高压输电线路是电力系统的重要组成部分。由于地形复杂、距离长,高压输电线路在运行过程中难免出现故障,本文针对高压输电线路常见的故障,提出了有效的故障诊断和处理方法,为线路故障的诊断和维护提供了依据,具有重要的理论和实用价值。%The high-voltage transmission line is an important part of the power system. Because of the complex terrain and long distance, high-voltage transmission line will inevitably fail during operation. Aiming at the common faults of high-voltage transmission line, this paper proposes effective fault diagnosis and treatment methods, which provide basis, for fault diagnosis and maintenance and has important theoretical and practical value.

  17. Optical Fiber Line Equipment Failures and Maintenance Measures%光纤线路设备故障分析及维护措施

    Institute of Scientific and Technical Information of China (English)

    王海

    2012-01-01

    近年来,随着科学技术的快速发展,光纤通信系统在各个行业领域中都有着较为广泛的应用.光纤通信技术的普及与发展为人们的生产与生活带了极大的便利,其逐步朝着智能化、数字化以及集成化的方向发展,在实际的光纤设备运行过程难免会出现各种各样的故障问题,这就需要采取相应的故障分析以及维护措施进行问题的有效解决.%In recent years, with the rapid development of science and technology, optical fiber communication systems in various industries have a relatively wide range of applications. Optical fiber communication technology popularization and development of production and life of people with a great convenience, gradually moving in the direction of intelligent, digital and integrated development of the actual fiber optic equipment is running, there will inevitably be a variety of failure problems, which need to take the corresponding fault analysis and maintenance of measures to effectively solve the problem.

  18. First-line XELOX plus bevacizumab followed by XELOX plus bevacizumab or single-agent bevacizumab as maintenance therapy in patients with metastatic colorectal cancer: the phase III MACRO TTD study.

    Science.gov (United States)

    Díaz-Rubio, Eduardo; Gómez-España, Auxiliadora; Massutí, Bartomeu; Sastre, Javier; Abad, Albert; Valladares, Manuel; Rivera, Fernando; Safont, Maria J; Martínez de Prado, Purificación; Gallén, Manuel; González, Encarnación; Marcuello, Eugenio; Benavides, Manuel; Fernández-Martos, Carlos; Losa, Ferrán; Escudero, Pilar; Arrivi, Antonio; Cervantes, Andrés; Dueñas, Rosario; López-Ladrón, Amelia; Lacasta, Adelaida; Llanos, Marta; Tabernero, Jose M; Antón, Antonio; Aranda, Enrique

    2012-01-01

    The aim of this phase III trial was to compare the efficacy and safety of bevacizumab alone with those of bevacizumab and capecitabine plus oxaliplatin (XELOX) as maintenance treatment following induction chemotherapy with XELOX plus bevacizumab in the first-line treatment of patients with metastatic colorectal cancer (mCRC). Patients were randomly assigned to receive six cycles of bevacizumab, capecitabine, and oxaliplatin every 3 weeks followed by XELOX plus bevacizumab or bevacizumab alone until progression. The primary endpoint was the progression-free survival (PFS) interval; secondary endpoints were the overall survival (OS) time, objective response rate (RR), time to response, duration of response, and safety. The intent-to-treat population comprised 480 patients (XELOX plus bevacizumab, n = 239; bevacizumab, n = 241); there were no significant differences in baseline characteristics. The median follow-up was 29.0 months (range, 0-53.2 months). There were no statistically significant differences in the median PFS or OS times or in the RR between the two arms. The most common grade 3 or 4 toxicities in the XELOX plus bevacizumab versus bevacizumab arms were diarrhea, hand-foot syndrome, and neuropathy. Although the noninferiority of bevacizumab versus XELOX plus bevacizumab cannot be confirmed, we can reliably exclude a median PFS detriment >3 weeks. This study suggests that maintenance therapy with single-agent bevacizumab may be an appropriate option following induction XELOX plus bevacizumab in mCRC patients.

  19. Opportune maintenance and predictive maintenance decision support

    OpenAIRE

    Thomas, Edouard; Levrat, Eric; Iung, Benoît; Cocheteux, Pierre

    2009-01-01

    International audience; Conventional maintenance strategies on a single component are being phased out in favour of more predictive maintenance actions. These new kinds of actions are performed in order to control the global performances of the whole industrial system. They are anticipative in nature, which allows a maintenance expert to consider non-already-planned maintenance actions. Two questions naturally emerge: when to perform a predictive maintenance action; how a maintenance expert c...

  20. Phase III, Double-Blind, Randomized Trial That Compared Maintenance Lapatinib Versus Placebo After First-Line Chemotherapy in Patients With Human Epidermal Growth Factor Receptor 1/2-Positive Metastatic Bladder Cancer.

    Science.gov (United States)

    Powles, Thomas; Huddart, Robert A; Elliott, Tony; Sarker, Shah-Jalal; Ackerman, Charlotte; Jones, Robert; Hussain, Syed; Crabb, Simon; Jagdev, Satinder; Chester, John; Hilman, Serena; Beresford, Mark; Macdonald, Graham; Santhanam, Sundar; Frew, John A; Stockdale, Andrew; Hughes, Simon; Berney, Daniel; Chowdhury, Simon

    2017-01-01

    Purpose To establish whether maintenance lapatinib after first-line chemotherapy is beneficial in human epidermal growth factor receptor (HER) 1/HER2-positive metastatic urothelial bladder cancer (UBC). Methods Patients with metastatic UBC were screened centrally for HER1/HER2 overexpression. Patients who screened positive for HER1/2 and who did not have progressive disease during chemotherapy (four to eight cycles) were randomly assigned one to one to lapatinib or placebo after completion of first-line/initial chemotherapy for metastatic disease. The primary end point was progression-free survival (PFS). Results Between 2007 and 2013, 446 patients with UBC were screened, and 232 with HER1- or HER2-positive disease were randomly assigned. The median PFS for lapatinib and placebo was 4.5 (95% CI, 2.8 to 5.4) and 5.1 (95% CI, 3.0 to 5.8) months, respectively (hazard ratio, 1.07; 95% CI, 0.81 to 1.43; P = .63). The overall survival for lapatinib and placebo was 12.6 (95% CI, 9.0 to 16.2) and 12.0 (95% CI, 10.5 to 14.9) months, respectively (hazard ratio, 0.96; 95% CI, 0.70 to 1.31; P = .80). Discontinuation due to adverse events were similar in both arms (6% lapatinib and 5% placebo). The rate of grade 3 to 4 adverse events for lapatinib and placebo was 8.6% versus 8.1% ( P = .82). Preplanned subset analysis of patients strongly positive for HER1/HER2 (3+ on immunohistochemistry; n = 111), patients positive for only HER1 (n = 102), and patients positive for only HER2 (n = 42) showed no significant benefit with lapatinib in terms of PFS and overall survival ( P > .05 for each). Conclusion This trial did not find significant improvements in outcome by the addition of maintenance lapatinib to standard of care.

  1. Evaluating lanreotide as maintenance therapy after first-line treatment in patients with non-resectable duodeno-pancreatic neuroendocrine tumours.

    Science.gov (United States)

    Lepage, Côme; Dahan, Laetitia; Bouarioua, Nadia; Toumpanakis, Christos; Legoux, Jean-Louis; Le Malicot, Karine; Guimbaud, Rosine; Smith, Denis; Tougeron, David; Lievre, Astrid; Cadiot, Guillaume; Di Fiore, Frédéric; Bouhier-Leporrier, Karine; Hentic, Olivia; Faroux, Roger; Pavel, Marianne; Borbath, Ivan; Valle, Juan W; Rinke, Anja; Scoazec, Jean-Yves; Ducreux, Michel; Walter, Thomas

    2017-05-01

    Patients with metastatic or locally advanced, non-resectable, grade 1 or 2 well-differentiated duodeno-pancreatic (WDDP) NETs are treated following European guidelines. Patients (Pts) with aggressive disease, i.e. progressive and/or symptomatic metastases and/or with significant hepatic invasion (>30-50%), and/or bone metastases, anti-tumour therapy should receive systemic combination of chemotherapy once disease control is obtained. The aim is to stop chemotherapy until progression. REMINET is an academic randomized, double-blind, placebo-controlled, phase II/III study designed to evaluate lanreotide (LAN) as maintenance treatment after L1 chemotherapy in G1-G2 WDDP NET. Main eligibility criteria: adults pts with a metastatic (synchronous or metachronous) or locally advanced, non-resectable, grade 1 or 2 WDDP NETs and documented control disease after L1 therapy at least 4 weeks prior to randomization. 222 patients will be randomly assigned in a 1:1 ratio to receive 120mg LAN or placebo, every 28 days, until disease progression or unacceptable toxicity. The aim of the phase II part is to demonstrate a 6-months PFS >45% in LAN arm. Secondary endpoints are PFS according to central review, overall survival, safety and quality of life. A bio-bank of frozen blood will be constituted. The study is currently open in France, Germany, Belgium, United Kingdom and Ireland. A total of 25 patients are randomized (NCT02288377). Copyright © 2017 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.

  2. Differential sensitivity of cerebellar purkinje neurons to ethanol in selectively outbred lines of mice: maintenance in vitro independent of synaptic transmission.

    Science.gov (United States)

    Basile, A; Hoffer, B; Dunwiddie, T

    1983-03-28

    The effects of ethanol on spontaneous firing of cerebellar Purkinje neurons were examined in outbred lines of mice (short-sleep, SS; and long-sleep, LS) which exhibit differential behavioral sensitivity to ethanol. In order to determine whether the differences in Purkinje cell ethanol sensitivity which are observed in situ reflect differences in intrinsic properties of Purkinje neurons, we developed an isolated in vitro preparation of mouse cerebellum. Even when synaptic transmission was largely inhibited by elevating Mg2+ and decreasing Ca2+ concentrations, Purkinje cells demonstrated stable long-term firing rates quite similar to those observed in vivo. Purkinje cells responded to superfusion of ethanol with both increases and decreases in firing rate. Inhibition of rate was more commonly observed, and was the only response which was demonstrably dose-dependent. The differential sensitivity to ethanol which we have previously reported in vivo was maintained even under under these conditions, with the LS mice being approximately 5 times more sensitive to the depressant effects of ethanol. In addition, it was shown that ethanol, at the concentrations used in these experiments, decreased the amplitude and increased the duration of single action potentials. Thus, taken together, these results suggest that the differential sensitivity of outbred lines to the soporific effects of ethanol are paralleled by differences in the sensitivity of Purkinje neurons in vitro to superfusion with ethanol. Because these differences can be observed even when synaptic transmission is largely suppressed, it would appear that these differences are intrinsic to the purkinje neurons themselves.

  3. Network maintenance

    CERN Multimedia

    GS Department

    2009-01-01

    A site-wide network maintenance operation has been scheduled for Saturday 28 February. Most of the network devices of the general purpose network will be upgraded to a newer software version, in order to improve our network monitoring capabilities. This will result in a series of short (2-5 minutes) random interruptions everywhere on the CERN sites throughout the day. This upgrade will not affect the Computer Centre itself, Building 613, the Technical Network and the LHC experiments, dedicated networks at the pits. For further details of this intervention, please contact Netops by phone 74927 or e-mail mailto:Netops@cern.ch. IT/CS Group

  4. Network maintenance

    CERN Multimedia

    IT Department

    2009-01-01

    A site wide network maintenance has been scheduled for Saturday 28 February. Most of the network devices of the General Purpose network will be upgraded to a newer software version, in order to improve our network monitoring capabilities. This will result in a series of short (2-5 minutes) random interruptions everywhere on the CERN sites along this day. This upgrade will not affect: the Computer centre itself, building 613, the Technical Network and the LHC experiments dedicated networks at the pits. Should you need more details on this intervention, please contact Netops by phone 74927 or email mailto:Netops@cern.ch. IT/CS Group

  5. Training system for the maintenance of power lines of the distribution network, ALEn3D; Sistema para la capacitacion y entrenamiento para el mantenimiento de lineas de la red de distribucion, ALEn3D

    Energy Technology Data Exchange (ETDEWEB)

    Galvan Bobadilla, Israel; Perez Ramirez, Miguel; Ayala Garcia, Andres; Munoz Roman, Jaime Javier; Rodriguez Gallegos, Eric; Salgado Martinez, Marco Antonio [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Sierra Rodriguez, Benjamin [Comision Federal de Electricidad (Mexico)

    2011-07-01

    The maintenance of power lines is a complex activity with many inherent risks. Therefore, training of personnel in this area is a priority for electric energy companies. This article presents a capacity-building system based on virtual reality developed by the Federal Electric Commission (CFE), called ALEn3D. This allows maintenance technicians to train in risk-free interactive 3D environments and to later use that knowledge with an actual installation. The work was validated by expert electricians and, therefore, the system represents a wealth of knowledge and best practices for the maintenance of distribution lines. ALEn3D was designed as a tool for self capacity-building for adults, and therefore includes usability and e-learning elements to facilitate learning and automate the students' ongoing progress. The system can be run by a personal computer, is low-cost, optimized and user friendly. It is being used in the 16 distribution divisions of the CFE. [Spanish] El mantenimiento en lineas energizadas es un actividad compleja y con muchos riesgos inherentes, por lo que la capacitacion del personal en esta area es una prioridad para las empresas de energia electrica. Este articulo presenta un sistema de capacitacion basado en realidad virtual desarrollado para la Comision Federal de Electricidad (CFE), denominado ALEn3D, el cual permite a los tecnicos de mantenimiento capacitarse en ambientes 3D interactivos libes de riesgos, para posteriormente usar esos conocimientos en una instalacion real. El trabajo fue validado por expertos electricistas, por lo tanto, el sistema es un acervo de conocimientos y mejores practicas del mantenimiento a lineas de distribucion. ALEn3D fue disenado como una herramienta de autocapacitacion para adultos, por lo que se incluyeron aspectos de usabilidad y e-learning que facilitan el aprendizaje y automatizan el seguimiento del estudiante. El sistema puede ser ejecutado en una computadora personal y es utilizado en las 16

  6. Maintenance capecitabine and bevacizumab versus bevacizumab alone after initial first-line bevacizumab and docetaxel for patients with HER2-negative metastatic breast cancer (IMELDA): a randomised, open-label, phase 3 trial.

    Science.gov (United States)

    Gligorov, Joseph; Doval, Dinesh; Bines, José; Alba, Emilio; Cortes, Paulo; Pierga, Jean-Yves; Gupta, Vineet; Costa, Rômulo; Srock, Stefanie; de Ducla, Sabine; Freudensprung, Ulrich; Mustacchi, Giorgio

    2014-11-01

    Longer duration of first-line chemotherapy for patients with metastatic breast cancer is associated with prolonged overall survival and improved progression-free survival. We investigated capecitabine added to maintenance bevacizumab after initial treatment with bevacizumab and docetaxel in this setting. We did this open-label randomised phase 3 trial at 54 hospitals in Brazil, China, Egypt, France, Hong Kong, India, Italy, Poland, Spain, and Turkey. We enrolled patients with HER2-negative measurable metastatic breast cancer; each received three to six cycles of first-line bevacizumab (15 mg/kg) and docetaxel (75-100 mg/m(2)) every 3 weeks. Progression-free patients were randomly assigned with an interactive voice-response system by block (size four) randomisation (1:1) to receive either bevacizumab and capecitabine or bevacizumab only (bevacizumab 15 mg/kg on day 1; capecitabine 1000 mg/m(2) twice per day on days 1-14, every 3 weeks) until progression, stratified by oestrogen receptor status (positive vs negative), visceral metastases (present vs absent), response status (stable disease vs response vs non-measurable), and lactate dehydrogenase concentration (≤1·5 vs >1·5 × upper limit of normal). Neither patients nor investigators were masked to allocation. The primary endpoint was progression-free survival (from randomisation) in the intention-to-treat population. This trial is registered with ClinicalTrials.gov, NCT00929240. Between July 16, 2009, and March 7, 2011 (when enrolment was prematurely terminated), 284 patients received initial bevacizumab and docetaxel; 185 (65%) were randomly assigned (91 to bevacizumab and capecitabine versus 94 to bevacizumab only). Progression-free survival was significantly longer in the bevacizumab and capecitabine group than in the bevacizumab only group (median 11·9 months [95% CI 9·8-15·4] vs 4·3 months [3·9-6·8]; stratified hazard ratio 0·38 [95% CI 0·27-0·55]; two-sided log-rank p<0·0001), as was overall

  7. Line-scanning particle image velocimetry: an optical approach for quantifying a wide range of blood flow speeds in live animals.

    Directory of Open Access Journals (Sweden)

    Tyson N Kim

    Full Text Available BACKGROUND: The ability to measure blood velocities is critical for studying vascular development, physiology, and pathology. A key challenge is to quantify a wide range of blood velocities in vessels deep within living specimens with concurrent diffraction-limited resolution imaging of vascular cells. Two-photon laser scanning microscopy (TPLSM has shown tremendous promise in analyzing blood velocities hundreds of micrometers deep in animals with cellular resolution. However, current analysis of TPLSM-based data is limited to the lower range of blood velocities and is not adequate to study faster velocities in many normal or disease conditions. METHODOLOGY/PRINCIPAL FINDINGS: We developed line-scanning particle image velocimetry (LS-PIV, which used TPLSM data to quantify peak blood velocities up to 84 mm/s in live mice harboring brain arteriovenous malformation, a disease characterized by high flow. With this method, we were able to accurately detect the elevated blood velocities and exaggerated pulsatility along the abnormal vascular network in these animals. LS-PIV robustly analyzed noisy data from vessels as deep as 850 µm below the brain surface. In addition to analyzing in vivo data, we validated the accuracy of LS-PIV up to 800 mm/s using simulations with known velocity and noise parameters. CONCLUSIONS/SIGNIFICANCE: To our knowledge, these blood velocity measurements are the fastest recorded with TPLSM. Partnered with transgenic mice carrying cell-specific fluorescent reporters, LS-PIV will also enable the direct in vivo correlation of cellular, biochemical, and hemodynamic parameters in high flow vascular development and diseases such as atherogenesis, arteriogenesis, and vascular anomalies.

  8. 输电线路运行中存在的主要问题与维护管理措施%The Main Problems that Exist in Transmission Lines Running and Maintenance of Management Measures

    Institute of Scientific and Technical Information of China (English)

    徐兴德

    2014-01-01

    As an important part of the power system, the transmission line is to ensure the safety of the power system, the basis and prerequisite for stable operation. However, in the course of its operation, is vulnerable to natural factors and human factors, and thus lead to a lot of security issues. This paper analyzes the process of transmission line problems in operation, and to explore appropriate maintenance and management measures.%作为电力系统的重要组成部分,输电线路是保证电力系统安全、稳定运行的基础和前提。但是,其在运行过程中,很容易受到自然因素和人为因素的影响,进而引发许多安全问题。分析输电线路运行过程中存在的问题,并探讨相应的维护、管理措施。

  9. Motorway maintenance work

    CERN Document Server

    2005-01-01

    Built 20 years ago, the airport section of the Geneva motorway bypass is now in need of maintenance work and alterations to bring it into line with the new standards. Two-lane traffic will be maintained in both directions during the work, which will be carried out in 2006 and 2007, but there will be various temporary special traffic arrangements in force. We should like to thank you in advance for your understanding. Civil Engineering Department, DAEL, State of Geneva More information: tel. 163 or www.autoroute-aeroport.ch Fewer cars, fewer traffic jams, with www.covoiturage.ch

  10. Living in Living Cities

    CERN Document Server

    Gershenson, Carlos

    2011-01-01

    This paper presents and overview of current and potential applications of living technology to urban problems. Living technology can be described as technology that exhibits the core features of living systems. These features can be useful to solve dynamic problems. In particular, urban problems concerning mobility, logistics, telecommunications, governance, safety, sustainability, and society and culture are presented, while solutions involving living technology are reviewed. Finally, the usefulness of describing cities as living systems is discussed.

  11. Clinical decision-making and health-related quality of life during first-line and maintenance therapy in patients with advanced non-small cell lung cancer (NSCLC): findings from a real-world setting.

    Science.gov (United States)

    Sztankay, Monika; Giesinger, Johannes Maria; Zabernigg, August; Krempler, Elisabeth; Pall, Georg; Hilbe, Wolfgang; Burghuber, Otto; Hochmair, Maximilian; Rumpold, Gerhard; Doering, Stephan; Holzner, Bernhard

    2017-08-23

    Maintenance therapy (MT) with pemetrexed has been shown to improve overall and progression-free survival of patients with non-squamous non-small cell lung cancer (NSCLC), without impairing patients' health-related quality of life (HRQOL) substantially. Comprehensive data on HRQOL under real-life conditions are necessary to enable informed decision-making. This study aims to (1) assess HRQOL during first-line chemotherapy and subsequent MT and (2) record patients' and physicians' reasons leading to clinical decisions on MT. Patients treated for NSCLC at three Austrian medical centres were included. HRQOL was assessed at every chemotherapy cycle using the EORTC QLQ-C30/+LC13 questionnaire. Semi-structured interviews were conducted before MT initiation and at the time of discontinuation to evaluate patients' and physicians' reasons for treatment decisions. Longitudinal QOL analysis was based on linear mixed models. Sixty-one (73%) out of 84 patients were considered for MT. Thirty-six patients (43%) received MT and 29 (35%) discontinued therapy. Decisions on MT initiation (in 20 cases by the physician vs 4 by the patient) and discontinuation (19 vs 10) were mainly voiced by the physician. Treatment toxicity of first-line chemotherapy was the main reason for rejection of MT in patients with stable disease and was more often indicated by patients than clinicians. HRQOL data were collected from 83 patients at 422 assessment time points and indicated significantly lower symptom severity during MT compared with first-line therapy for nausea and vomiting (p = 0.006), sleep disturbances (p loss (p = 0.043), constipation (p = 0.017) and chest pain (p = 0.022), and a deterioration in emotional functioning (p = 0.023) and cognitive functioning (p = 0.044) during MT. Our results indicate that HRQOL and symptom burden improve between first-line treatment to MT in some respects, although some late toxicity persists. Discrepancies between patients' and physicians

  12. Current transformer verification system for in situ, live line end-to-end calibration of medium and high voltage current transformers

    Energy Technology Data Exchange (ETDEWEB)

    Gunn, C.; Irwin, L.; Marr, D. [Schneider Electric Canada, Toronto, ON (Canada)

    2007-07-01

    IEC Instrument Transformer Standard 60044-1 was created in response to recent industrial and regulatory trends for improved metering performance. The accuracy of high voltage (HV) metering depends on the quality of the instrument transformer signals feeding the energy meters. The complete current transformer (CT) system, including the end-to-end interconnection and metering burden, must be routinely verified in order to claim ongoing compliance. However, utilities rarely perform routine verification and calibration of medium voltage (MV) and HV current instrument transformers because of the complexities associated with CT primary circuit removal and subsequent primary injection. In some cases, routine verification and calibration is not performed due to the belief that conventional CT performance is a constant that never changes. However, conventional CT accuracies may change over time due to transformer insulation breakdown, electric field effects, core magnetization, and burden wiring effects. In addition, CT secondary circuits may be shared with multiple metering and protection devices that present a complex burden to the CT. Changes in burden impedance can also have an effect on CT accuracy. This paper presented the Current Transformer Verification System (CTVS), which provides a unique and novel means to precisely characterize and verify the actual end-to-end performance of MV and HV current transformers while still energized. The CTVS system takes into account any voltage or specific installed site burden dependency that may be present. It provides the utility with the ability to verify CTs in-situ without system interruption through live-line deployment and to readily check the accuracy of metering systems to ensure compliance with industry requirements. 2 tabs., 9 figs.

  13. 高频逆变焊机用于钢轨及辙叉线上焊补与维护%Maintenance on Line to Rail with High Frequency Inverter DC Welding Machine

    Institute of Scientific and Technical Information of China (English)

    刘志刚; 汪至中

    2001-01-01

    The high frequency inverter DC welding machine for maintenance on line to rail is presented in this paper. The main technical criteria reach the level of the overseas products, which is verified by the test of the Pro ducts Q uality Detection Center of the Ministry of Railways Department in China. After w elding, the metal lurgical phase tests verify that the scheme is feasible and reasonable. Some inv olved welding technology is satisfactory through lots of experiments by the Beij ing Railroad Bureau.%从技术的角度论证了用于钢轨及辙叉线上焊补用高频逆变焊机的性能,经铁道部产品质量检测中心的测试,各项主要技术指标均已达到国外同类产品的水平.对辙叉焊补后的金相实验证明该方法科学合理;有关焊补工艺,大量现场实验说明取得了相当满意的结果.

  14. AIRCRAFT MAINTENANCE HANGAR

    National Research Council Canada - National Science Library

    GEAMBASU Gabriel George

    2017-01-01

    .... The first part of research describes the aircraft maintenance process that has to be done after an updated maintenance manual according with aircraft type, followed by a short introduction about maintenance hangar...

  15. Maintenance Business Plans.

    Science.gov (United States)

    Adams, Matt

    2002-01-01

    Discusses maintenance business plans, statements which provide accountability for facilities maintenance organizations' considerable budgets. Discusses the plan's components: statement of plan objectives, macro and detailed description of the facility assets, maintenance function descriptions, description of key performance indicators, milestone…

  16. VT Maintenance District Boundaries

    Data.gov (United States)

    Vermont Center for Geographic Information — Vermont has eight transportation maintenance districts which are responsible for all maintenance activities on state highways, and for providing technical assistance...

  17. 78 FR 20619 - Customer Account Registration and Maintenance

    Science.gov (United States)

    2013-04-05

    ... United States Patent and Trademark Office Customer Account Registration and Maintenance ACTION: Proposed... Maintenance'' in the subject line of the message. Mail: Susan K. Fawcett, Records Officer, Office of the Chief... Customer Profile Account Request and 12 minutes 5,000 1,000 Maintenance. Correspondence and...

  18. Analysis of Methods and Tools with Multi-circuit Transmission Lines on the Same Tower Live Working%同塔多回路输电线路带电作业的方法及工具分析

    Institute of Scientific and Technical Information of China (English)

    于德水

    2014-01-01

    In order to ensure the stability and reliability of power supply systems, power transmission lines in the repair process, the method to be used for live working as much as possible to reduce the frequency and duration of power outages. Combined with multi-loop transmission line tower features, analysis, discusses the methods and tools of its live operations.%为了保证电力系统的供电稳定性和可靠性,在检修电力输电线路的过程中,要采用带电作业的方法,尽可能减少停电次数和时间。结合同塔多回路输电线路的特点,分析、探讨了其带电作业的方法和工具。

  19. A Situational Maintenance Model

    DEFF Research Database (Denmark)

    Luxhoj, James T.; Thorsteinsson, Uffe; Riis, Jens Ove

    1997-01-01

    An overview of trend in maintenance management and presentation of a situational model and an analytical tools for identification of managerial efforts in maintenance.......An overview of trend in maintenance management and presentation of a situational model and an analytical tools for identification of managerial efforts in maintenance....

  20. A Situational Maintenance Model

    DEFF Research Database (Denmark)

    Luxhoj, James T.; Thorsteinsson, Uffe; Riis, Jens Ove

    1997-01-01

    An overview of trend in maintenance management and presentation of a situational model and an analytical tools for identification of managerial efforts in maintenance.......An overview of trend in maintenance management and presentation of a situational model and an analytical tools for identification of managerial efforts in maintenance....

  1. Maintenance and Condition-Based Maintenance

    Institute of Scientific and Technical Information of China (English)

    DING Jin-hua; WANG Xue-Jun; ZHOU Rong; LIN Min; Olsson Erland

    2005-01-01

    The evolution of maintenance management is briefly introduced in this paper, from corrective maintenance to preventive maintenance. First, a range of condition monitoring and fault diagnosis techniques developed in different industries are surveyed; Second, many methods of condition monitoring are presented; Third, mathematical methods used in condition monitoring are given; Then the merits and shortcomings are discussed.Efficient maintenance policies are of fundamental importance in system engineering because of their fallbacks into the safety and economics of plant operation. Applying condition-based maintenance to a system can reduce the cost and extend the availability of facilities. With the advent of personal computers as fast and cost effective machines for data acquisition and processing of multiple signals some shortcomings mentioned in condition monitoring could be solved or reduced to some extent. These PCs can be a solution as a condition monitoring based maintenance system.

  2. Positioning embedded software maintenance within industrial maintenance

    OpenAIRE

    Karim, Ramin; Kajko-Mattsson, Mira; Söderholm, Peter; Candell, Olov; Tyrbern, Tommy; Öhlund, Hans; Johansson, Jan

    2008-01-01

    Little is known about of how software embedded in complex industrial technical systems is maintained. In this paper, we identify industrial maintenance process steps and position software maintenance activities within them. We do this in the context of JAS 39 Gripen, a multi-role combat aircraft developed by Saab.

  3. Living with Parkinson's

    Science.gov (United States)

    ... are here Home / Living with Parkinson’s Living with Parkinson’s “Parkinson’s is a part of my life, but ... Tips from the Health Care Team Finding Resources Parkinson's HelpLine Learn More Educational Materials Do you want ...

  4. Maintenance Approaches for Different Production Methods

    Directory of Open Access Journals (Sweden)

    Mungani, Dzivhuluwani Simon

    2013-11-01

    Full Text Available Various production methods are used in industry to manufacture or produce a variety of products needed by industry and consumers. The nature of a product determines which production method is most suitable or cost-effective. A continuous process is typically used to produce large volumes of liquids or gases. Batch processing is often used for small volumes, such as pharmaceutical products. This paper discusses a research project to determine the relationship between maintenance approaches and production methods. A survey was done to determine to what extent three maintenance approaches reliability-centred maintenance (RCM, total productive maintenance (TPM, and business-centred maintenance (BCM are used for three different processing methods (continuous process, batch process, and a production line method.

  5. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    IT Department

    2011-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 20h00 and 2h00 on the 16 November. Fixed-line telephone and audio-conference services may be disrupted during this intervention. Nevertheless, the CCC and the fire brigade will be reachable at any time. Mobile telephony services (GSM) will not be affected by the maintenance work. IT/CS

  6. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    IT Department

    2011-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 20h00 and midnight on the 21st of February in order to apply the latest software patches. Fixed-line telephone and audio-conference services may be disrupted during this intervention. Nevertheless, the CCC and the fire brigade will be reachable at any time. Mobile telephony services (GSM) will not be affected by the maintenance work. CS Group

  7. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    IT Department

    2009-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 8h30 and 17h30 on Saturday 9 May. Fixed-line telephone and audio-conference services may be disrupted during this intervention. Nevertheless, the CCC and the fire brigade will be reachable at any time. Mobile telephony services (GSM) will not be affected by the maintenance work. IT/CS/CS

  8. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    IT Department

    2009-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 20h00 and midnight on the 29th of July in order to apply the latest software patches. Fixed-line telephone and audio-conference services may be disrupted during this intervention. Nevertheless, the CCC and the fire brigade will be reachable at any time. Mobile telephony services (GSM) will not be affected by the maintenance work. IT/CS/CS

  9. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    IT/CS

    2014-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 8 p.m. and 2 a.m. on 26 August.   Fixed-line telephone and audio-conference services may be disrupted during this intervention. Nevertheless, the CCC and the Fire Brigade will be reachable at any time. Mobile telephony services (GSM) will not be affected by the maintenance work.

  10. Rural road maintenance management

    OpenAIRE

    Johannessen, B.

    1999-01-01

    This manual summarizes relevant Cambodian government policies regarding rural road maintenance. Chapter 2 defines the various components of road maintenance and describes an effective strategy and organization which addresses the maintenance requirements of rural roads in Cambodia. Chapter 3 is a brief description of the planning, implementation and reporting cycle required in an effective road maintenance management system. Chapter 4 summarizes the contracts management procedures, and finall...

  11. Asphalt in Pavement Maintenance.

    Science.gov (United States)

    Asphalt Inst., College Park, MD.

    Maintenance methods that can be used equally well in all regions of the country have been developed for the use of asphalt in pavement maintenance. Specific information covering methods, equipment and terminology that applies to the use of asphalt in the maintenance of all types of pavement structures, including shoulders, is provided. In many…

  12. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    2007-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 8 p.m. and midnight on 20 November. Fixed-line telephone and audioconference services may be disrupted while the work is being carried out. However, the CCC and the fire brigade will be reachable at any time. Mobile telephony services (GSM) will not be affected by the maintenance work. For further details about the maintenance work, please contact the telephone switchboard on 76111 or by email. Telecom Section - IT/CS

  13. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    2007-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 8 p.m. and midnight on 20 November. Fixed-line telephone and audioconference services may be disrupted while the work is being carried out. However, the CCC and the fire brigade will be contactable at any time. Mobile telephony services (GSM) will not be affected by the maintenance work. For further details about the maintenance work, please contact the telephone switchboard on 76111 or by email to standard.telephone@cern.ch. Telecom Section IT/CS

  14. Designing a scrubber for maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Mahlmeister, M.E.; Baron, E.S. [New York State Electric and Gas Corp., Binghamton, NY (United States); Watts, J. [USDOE Pittsburgh Energy Technology Center, PA (United States)

    1996-12-01

    Under Round 4 of the U.S. Department of Energy`s (DOE) Clean Coal Technology program, New York State Electric & Gas Corporation (NYSEG), in partnership with Saarberg-Holter-Umwelttechnik (SHU), Consolidation Coal Company and Stebbins Engineering and Manufacturing Company, has retrofitted a formic acid enhanced forced oxidation wet limestone scrubber on Units I and 2 at the Milliken Steam Electric Station. Units I and 2 are 1950s vintage Combustion Engineering tangentially fired pulverized coal units, which are rated at nominal 150 MW each and operate in balanced draft mode. The Flue Gas Desulfurization (FGD) system for Unit 2 was placed into operation in January 1995 and the Unit I system in June 1995. The project incorporates several unique aspects: low pH operation; a ceramic tile-lined cocurrent/countercurrent, split module absorber; a wet stack supported on the roof of the FGD building; and closed loop, zero liquid discharge operation that produces commercial grade gypsum and calcium chloride brine. The project objectives include 98% SO{sub 2} removal efficiency while burning high sulfur coal, the production of marketable byproducts to minimize solid waste disposal, zero wastewater discharge, space-saving design, and minimization of maintenance requirements of a wet scrubber. The paper provides a brief overview of the project scrubber design relating to maintenance considerations. A discussion of the early results of the maintenance history is also provided. Repair techniques that have been developed and tested for ceramic tile lined modules are included. 1 fig.

  15. Algorithm for predictive control implementation on fiber optic transmission lines

    Science.gov (United States)

    Andreev, Vladimir A.; Burdin, Vladimir A.; Voronkov, Andrey A.

    2014-04-01

    This paper presents the algorithm for predictive control implementation on fiber-optic transmission lines. In order to improve the maintenance of fiber optic communication lines, the algorithm prediction uptime optic communication cables have been worked out. It considers the results of scheduled preventive maintenance and database of various works on the track cable line during maintenance.

  16. On-line analysis of penicillin blood levels in the live rat by combined microdialysis/fast-atom bombardment mass spectrometry.

    OpenAIRE

    Caprioli, R.M.; Lin, S. N.

    1990-01-01

    The combination of microdialysis and fast-atom bombardment mass spectrometry has been used to follow the pharmacokinetics of penicillin G directly in the blood-stream of a live rat. After the intramuscular injection of the antibiotic, the blood dialysate was allowed to flow into the mass spectrometer via the continuous-flow/fast-atom bombardment interface. Tandem mass spectrometry provided the means for isolating and recording the ion fragments produced from the drug as the dialysate was expo...

  17. Modern electronic maintenance principles

    CERN Document Server

    Garland, DJ

    2013-01-01

    Modern Electronic Maintenance Principles reviews the principles of maintaining modern, complex electronic equipment, with emphasis on preventive and corrective maintenance. Unfamiliar subjects such as the half-split method of fault location, functional diagrams, and fault finding guides are explained. This book consists of 12 chapters and begins by stressing the need for maintenance principles and discussing the problem of complexity as well as the requirements for a maintenance technician. The next chapter deals with the connection between reliability and maintenance and defines the terms fai

  18. AIRCRAFT MAINTENANCE HANGAR

    Directory of Open Access Journals (Sweden)

    GEAMBASU Gabriel George

    2017-05-01

    Full Text Available The paper presents the maintenance process that is done on an airplane, at a certain period of time, or after a number of flight hours or cycles and describes the checks performed behind each inspection. The first part of research describes the aircraft maintenance process that has to be done after an updated maintenance manual according with aircraft type, followed by a short introduction about maintenance hangar. The second part of the paper presents a hangar design with a foldable roof and walls, which can be folded or extended, over an airplane when a maintenance process is done, or depending on weather condition.

  19. Knowledge based maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Sturm, A. [Hamburgische Electacitaets-Werke AG Hamburg (Germany)

    1997-12-31

    The establishment of maintenance strategies is of crucial significance for the reliability of a plant and the economic efficiency of maintenance measures. Knowledge about the condition of components and plants from the technical and business management point of view therefore becomes one of the fundamental questions and the key to efficient management and maintenance. A new way to determine the maintenance strategy can be called: Knowledge Based Maintenance. A simple method for determining strategies while taking the technical condition of the components of the production process into account to the greatest possible degree which can be shown. A software with an algorithm for Knowledge Based Maintenance leads the user during complex work to the determination of maintenance strategies for this complex plant components. (orig.)

  20. Geometric database maintenance using CCTV cameras and overlay graphics

    Science.gov (United States)

    Oxenberg, Sheldon C.; Landell, B. Patrick; Kan, Edwin

    1988-01-01

    An interactive graphics system using closed circuit television (CCTV) cameras for remote verification and maintenance of a geometric world model database has been demonstrated in GE's telerobotics testbed. The database provides geometric models and locations of objects viewed by CCTV cameras and manipulated by telerobots. To update the database, an operator uses the interactive graphics system to superimpose a wireframe line drawing of an object with known dimensions on a live video scene containing that object. The methodology used is multipoint positioning to easily superimpose a wireframe graphic on the CCTV image of an object in the work scene. An enhanced version of GE's interactive graphics system will provide the object designation function for the operator control station of the Jet Propulsion Laboratory's telerobot demonstration system.

  1. Development of the insulator-replacing live working robot on transmission line%输电线路带电更换绝缘子串机器人的研制

    Institute of Scientific and Technical Information of China (English)

    刘兰兰; 刘夏清; 邹德华; 牛捷; 严宇; 李稳; 曾文远

    2016-01-01

    输电线路带电更换绝缘子串危险性大、事故率高。为便于带电更换,该文对等电位作业人员动作分解和模拟,设计可以取代等电位作业人员自主完成输电线路上绝缘子串更换作业的机器人。机器人包括非越障平台、控制平台和地面基地,其中非越障平台主要由机体、机械臂、机械手及执行末端等机构构成,控制平台由运动控制、通信、图像采集和电源管理系统组成,地面基站系统包含无线网卡和3 G上网卡的 PC机。地面基地通过无线网络对非越障平台和控制平台遥控。研制的机器人操作方便、灵活,通过了工频耐压试验、模拟线路作业试验及现场带电线路作业试验,满足110~220 kV输电线路上绝缘子串更换作业的需求,减轻了作业人员的劳动强度,提高了带电作业的安全系数。%Live replacement of the insulator string on the transmission line is dangerous and has a high accident rate.In order to solve this problem,it is necessary to decompose and simulate the operation process of the live working people.The insulator-replacing live working robot was re-searched to replace the live working people on transmission line in this paper.The designed robot was composed of a non-obstacle-surmounting platform,a control platform and a ground base sta-tion.The non-obstacle-surmounting platform was consisted of the robot body,two robot arms, two robot hands,and two end effectors.The control platform was consisted of a motion control system,a communication system,a video capture system and a power management system.The ground base included a PC which had the wireless card and the 3G card.The ground base station realized the remote control of the non-obstacle-surmounting platform and the control platform through the wireless network.The robot is easy to operate,which is passed through power-fre-quency withstand voltage test,simulated-operation test,and live-line working

  2. Robots for Aircraft Maintenance

    Science.gov (United States)

    1993-01-01

    Marshall Space Flight Center charged USBI (now Pratt & Whitney) with the task of developing an advanced stripping system based on hydroblasting to strip paint and thermal protection material from Space Shuttle solid rocket boosters. A robot, mounted on a transportable platform, controls the waterjet angle, water pressure and flow rate. This technology, now known as ARMS, has found commercial applications in the removal of coatings from jet engine components. The system is significantly faster than manual procedures and uses only minimal labor. Because the amount of "substrate" lost is minimal, the life of the component is extended. The need for toxic chemicals is reduced, as is waste disposal and human protection equipment. Users of the ARMS work cell include Delta Air Lines and the Air Force, which later contracted with USBI for development of a Large Aircraft Paint Stripping system (LARPS). LARPS' advantages are similar to ARMS, and it has enormous potential in military and civil aircraft maintenance. The technology may also be adapted to aircraft painting, aircraft inspection techniques and paint stripping of large objects like ships and railcars.

  3. Maintenance bevacizumab-pemetrexed after first-line cisplatin-pemetrexed-bevacizumab for advanced nonsquamous nonsmall-cell lung cancer : updated survival analysis of the AVAPERL (MO22089) randomized phase III trial

    NARCIS (Netherlands)

    Barlesi, F.; Scherpereel, A.; Gorbunova, V.; Gervais, R.; Vikstrom, A.; Chouaid, C.; Chella, A.; Kim, J. H.; Ahn, M. J.; Reck, M.; Pazzola, A.; Kim, H. T.; Aerts, J. G.; Morando, C.; Loundou, A.; Groen, H. J. M.; Rittmeyer, A.

    The randomized, phase III AVAPERL trial evaluated the safety and efficacy of bevacizumab maintenance with or without pemetrexed in nonsquamous nonsmall-cell lung cancer (nsNSCLC). Progression-free survival (PFS) was significantly prolonged with bevacizumab-pemetrexed, but overall survival (OS) data

  4. Studying the Advance Maintenance Practice & Computerised Maintenance

    Directory of Open Access Journals (Sweden)

    Eng Hamdy Ibrahim Mohamed Mahmoud

    2016-02-01

    Full Text Available Many companieѕ think of maintenance aѕ an inevitable ѕource of coѕt. For theѕe companieѕ maintenance operationѕ have a corrective function and are only executed in emergency conditionѕ. Today, thiѕ form of intervention iѕ no longer acceptable becauѕe of certain critical elementѕ ѕuch aѕ product quality, plant ѕafety, and the increaѕe in maintenance department coѕtѕ which can repreѕent from 15 to 70% of total production coѕtѕ. The managerѕ have to ѕelect the beѕt maintenance policy for each piece of equipment or ѕyѕtem from a ѕet of poѕѕible alternativeѕ. For example, corrective, preventive, opportuniѕtic, condition-baѕed and predictive maintenance policieѕ are conѕidered in thiѕ paper.

  5. Random maintenance policies

    CERN Document Server

    Nakagawa, Toshio

    2014-01-01

    Exploring random maintenance models, this book provides an introduction to the implementation of random maintenance, and it is one of the first books to be written on this subject.  It aims to help readers learn new techniques for applying random policies to actual reliability models, and it provides new theoretical analyses of various models including classical replacement, preventive maintenance and inspection policies. These policies are applied to scheduling problems, backup policies of database systems, maintenance policies of cumulative damage models, and reliability of random redundant systems. Reliability theory is a major concern for engineers and managers, and in light of Japan’s recent earthquake, the reliability of large-scale systems has increased in importance. This also highlights the need for a new notion of maintenance and reliability theory, and how this can practically be applied to systems. Providing an essential guide for engineers and managers specializing in reliability maintenance a...

  6. Framework for Maintenance Planning

    DEFF Research Database (Denmark)

    Soares, C. Guedes; Duarte, J. Caldeira; Garbatov, Y.;

    2010-01-01

    The present document presents a framework for maintenance planning. Maintenance plays a fundamental role in counteracting degradation effects, which are present in all infrastructure and industrial products. Therefore, maintenance planning is a very critical aspect to consider both during...... the design and during the whole life span of operational use, within an integrated framework founded on risk and reliability based techniques. The document addresses designers, decision makers and professionals responsible for or involved in establishing maintenance plans. The purpose of this document...... is to present maintenance as an integrated approach that needs to be planned, designed, engineered, and controlled by proper qualitative and quantitative techniques. This document outlines the basic premises for maintenance planning and provides the general philosophies that can be followed and points to a best...

  7. Framework for Maintenance Planning

    DEFF Research Database (Denmark)

    Duarte, J. Caldeira; Garbatov, Y.; Zio, E.

    2010-01-01

    The present document presents a framework for maintenance planning. Maintenance plays a fundamental role in counteracting degradation effects, which are present in all infrastructure and industrial products. Therefore, maintenance planning is a very critical aspect to consider both during...... the design and during the whole life span of operational use, within an integrated framework founded on risk and reliability based techniques. The document addresses designers, decision makers and professionals responsible for or involved in establishing maintenance plans. The purpose of this document...... is to present maintenance as an integrated approach that needs to be planned, designed, engineered, and controlled by proper qualitative and quantitative techniques. This document outlines the basic premises for maintenance planning and provides the general philosophies that can be followed and points to a best...

  8. A STUDY OF PEOPLE LIVING WITH HIV-AIDS [PLHA] ON FIRST LINE HIGHLY ACTIVE ANTIRETROVIRAL THERAPY [HAART] WITH IMMUNOLOGICAL FAILURE

    Directory of Open Access Journals (Sweden)

    Natarajan Kandasamy

    2016-07-01

    Full Text Available BACKGROUND Follow-up of patients with First line antiretroviral therapy, Cluster Differentiation (CD4 counts are done every 6 months. Viral load is not possible in resource poor settings like India. Non-Governmental Organisation (NGO’s, Human Immunodeficiency Virus (HIV treating physicians and international guidelines recommend viral load as the follow-up method for first line failure, so to study the impact of national program with immunological criteria and its sensitivity to identify virological failure is needed at this juncture. METHODS A total of 170 patients from northern districts of Tamilnadu referred to Government Hospital for Thoracic Medicine (GHTMTambaram Sanatorium State AIDS Clinical Expert Panel (SACEP committee with suspected first line ART failure were included in the study [after fulfilling the inclusion and exclusion criteria]. Viral load done for these patients were compared with Immunological criteria for concordance or discordance. RESULTS In our study we conclude that Virological discordance was noted in 51% of all cases. CD4 falling greater than 50% of on treatment peak value has the highest sensitivity to detect virological failure. The ODD’s ratio for immunological criteria CD4 falling more than 50% was three times more than other criteria with significant P-value 0.002. Immunological criteria CD4 persistently below 100 had highest specificity. CONCLUSION Immunological criteria CD4 falling more than 50% had highest sensitivity. 2. Immunological criteria CD4 persistently below 100 had had highest specificity. 3. The ODD’s ratio for immunological criteria CD4 falling more than 50% of on treatment peak value was three times more than other criteria with significant P-value 0.002. 4. Immunological and virological discordance was 51% of all cases. 5. Differences in age and duration of ART was not associated with virological failure between males and females. 6. An economical lab test with low cost to detect the viral

  9. Software evolution and maintenance

    CERN Document Server

    Tripathy, Priyadarshi

    2014-01-01

    Software Evolution and Maintenance: A Practitioner's Approach is an accessible textbook for students and professionals, which collates the advances in software development and provides the most current models and techniques in maintenance.Explains two maintenance standards: IEEE/EIA 1219 and ISO/IEC14764Discusses several commercial reverse and domain engineering toolkitsSlides for instructors are available onlineInformation is based on the IEEE SWEBOK (Software Engineering Body of Knowledge)

  10. Turbine maintenance and modernization

    Energy Technology Data Exchange (ETDEWEB)

    Unga, E. [Teollisuuden Voima Oy, Olkiluoto (Finland)

    1998-12-31

    The disturbance-free operation of the turbine plant plays an important role in reaching good production results. In the turbine maintenance of the Olkiluoto nuclear power plant the lifetime and efficiency of turbine components and the lifetime costs are taken into account in determining the turbine maintenance and modernization/improvement program. The turbine maintenance program and improvement/modernization measures taken in the plant units are described in this presentation. (orig.)

  11. Remote Maintenance Monitoring System -

    Data.gov (United States)

    Department of Transportation — The Remote Maintenance and Monitoring System (RMMS) is a collection of subsystems that includes telecommunication components, hardware, and software, which serve to...

  12. Examining maintenance responsibilities.

    Science.gov (United States)

    Lam, K C

    2001-06-01

    This paper has examined the important responsibilities of the two organisations involved in the provision of maintenance service for the vital building services in many of our highly serviced buildings. The issues raised could be put to beneficial use in both clients and maintenance providers. All in all, the clients should work closely with their maintenance providers. Engineering services in buildings will not perform satisfactorily and efficiently if both parties do not work together and understand the maintenance tasks based on a business partnering mode. Put forward is the view that the management of the activities involved in the operation and maintenance process is a "shared commitment/involvement" between the client and the maintenance provider. It is obvious that many factors can influence the continued effectiveness of a quality maintenance scheme set up by client and provider. Some of these factors are: Change in key personnel Updates in technology Amendments to engineering practice Implementation of legislative requirements Changes in operation by client or provider Change of use of building Passage of time These factors must be fully reviewed by both parties from time to time, and necessary actions taken. A cooperative team working relationship and improved communication should be fostered by the client and his provider for the best management of services maintenance. This arrangement will contribute to better building services systems with continuous improvement; improved value for clients and higher return for the maintenance provider.

  13. Software Maintenance Success Recipes

    CERN Document Server

    Reifer, Donald J

    2011-01-01

    Dispelling much of the folklore surrounding software maintenance, Software Maintenance Success Recipes identifies actionable formulas for success based on in-depth analysis of more than 200 real-world maintenance projects. It details the set of factors that are usually present when effective software maintenance teams do their work and instructs on the methods required to achieve success. Donald J. Reifer--an award winner for his contributions to the field of software engineering and whose experience includes managing the DoD Software Initiatives Office--provides step-by-step guidance on how t

  14. Undocumented Youth Living Between the Lines: Urban Governance, Social Policy, and the Boundaries of Legality in New York City and Paris

    Science.gov (United States)

    Ruszczyk, Stephen P.

    This dissertation compares the transition to adulthood of undocumented youth in New York and Paris, along with analysis of the construction of illegality in each city. In both the United States and France, national restrictions against undocumented immigrants increasingly take the form of deportations and limiting access to social rights. New York City and Paris, however, mitigate the national restrictions in important but different ways. They construct "illegality" differently, leading to different young adult outcomes and lived experiences of "illegality." This project uses seven years of multi-site ethnographic data to trace the effects of these mitigated "illegalities" on two dozen (male) youth. We can begin to understand the variation in these undocumented young men's social lives within and between cities by centering on (1) governance structure, the labyrinth of obtaining rights associated with citizenship, (2) citizenship, the possibility of gaining a legal status, steered in particular by civil society actors, and (3) identity, here centered on youths' negotiation of social mobility with the fear of enforcement. Biographical narratives show the shifts in social memberships as youth transition to new countries, new restrictions at adulthood, and new, limiting work. In New York, most social prospects are flattened as future possibilities are whittled down to ones focusing on family and wages. Undocumented status propels New York informants into an accelerated transition to adulthood, as they take on adult responsibilities of work, paying bills, and developing families. In Paris, youth experience more divergent processes of transitioning to adulthood. Those who are more socially integrated use a civil society actor to garner a (temporary) legal status, which does not lead to work opportunities. Those who are less socially integrated face isolation as they wait to gain status and access to better jobs. Paris undocumented youth are thus characterized by a

  15. Establishment of Master Cell Stock and Working Cell Bank of MDCK Lines and Selection and Evaluation of the Lines as Candidate Viral Substrates for Approval Production of Combinational Canine Attenuated-live Virus Vaccines

    Institute of Scientific and Technical Information of China (English)

    ZHANG De-li; FANG Fu-de; LI Liu-jin; XIA Geng-tian; HE Xu-yu; GAO Bu-xian; BAI Xiao-hong; HUANG Gao-sheng; LIU Shang-gao; YEN Lung-fei

    2002-01-01

    Under the prerequisite that the incidence of cancer or tumor in negative-control nude mice inoculated subcutaneously with primary feline or canine kidney cell cultures purified in vitro at passage 3 was 0(0/22) and 0 (0/10), respectively. The incidence of the progressively-growing malignant tumor(MT) in positive-control nude mice inoculated subcutaneously with Hela cell cultures of KB, X, or NM20/X strain was 10/10, 25/25 and 5/51, respectively. The results showed that the incidence of tumor in nude mice with di-and hyperploid YB strain of MDCK cell during 17 - 23 passages, with hyper- and hypoploid KA strain of MDCK cell during 6 - 8 passages, with hypoploid WB strain of MDCK cell on passage 6, with hyper-and hypopioid H strain of MDCK cell during 8 - 24 passages was 2/24, 6/10, 5/10 and 10/15, respectively. The chromosomal analysis results showed that the ratio of difference in the rate of modal chromosome number between high(mcs + n) and lowest (mcs)passages was not more than 5- 15% and the structure aberrations was generally 0-3%. These results proved that the genetic characteristics of chromosomal number of cell lines determines their tumorigenicity, but it is species-specific. MDCK line has tumorigenicity no matter what its chromosome karyotype is, at least it has very low tumorigenicity even when its modal chromosome number is hypoploid. It is thus evident that MDCK cell of WB or H strain can be approved as substrate for the preparation of attenuated viral vaccines, but MDCK cell of YB or KA strain can not be approved as substrate for the preparation of attenuated viral vaccines.

  16. Maintenance Trades Guidelines

    Science.gov (United States)

    Weidner, Theodore J.

    2008-01-01

    In 2002, APPA published "Maintenance Staffing Guidelines for Educational Facilities," the first building maintenance trades staffing guideline designed to assist educational facilities professionals with their staffing needs. addresses how facilities professionals can determine the appropriate size and mix of their organization. Contents…

  17. The Avoiding Cardiovascular events through COMbination therapy in Patients Living with Systolic Hypertension (ACCOMPLISH) trial: a comparison of first-line combination therapies.

    Science.gov (United States)

    Weder, Alan B

    2005-02-01

    Although multidrug therapy is required in order to achieve good blood pressure control in many hypertensives, there are no studies directly comparing fixed-dose combinations as initial therapy. The Avoiding Cardiovascular events through COMbination therapy in Patients Living with Systolic Hypertension (ACCOMPLISH) trial compares regimens of benazepril plus amlodipine versus benazepril plus hydrochlorothiazide, force-titrated to 40/10 and 40/25mg, respectively. A total of 12,600 high-risk hypertensives have been randomised and will be followed for 3 - 5years, during which cardiovascular events will be monitored. The investigators hypothesise that the benazepril plus amlodipine regimen will decrease cardiovascular events by 15% compared with benazepril plus hydrochlorothiazide. Recruitment began in 2003, and the trial is expected to end in 2008. The ACCOMPLISH trial shares important limitations with many other recent trials that will make it difficult to apply the results in clinical practice. These include the focus on high-risk hypertensive patients, in whom significant reductions in relative risk will translate into meaningful reductions in absolute risk: in lower-risk hypertensives with a low absolute risk, similar relative risk reductions may not be of great impact on the population disease burden. In ACCOMPLISH, as in most industry-sponsored clinical trials, the main goal appears to be market-driven: doses of drugs tested are not those available for clinical practice. The question asked, whether the combination of benazepril with either diuretic or dihydropyridine calcium channel blocker is more efficacious, is not a clinically compelling one. Finally, the univariate subgroup analyses proposed are unlikely to lead to an understanding of whether either combination has specific advantages for patients encountered clinically, most of whom have multiple risk factors. Thus, it appears that ACCOMPLISH, as with many recent pharmacological trials, will not greatly

  18. Maintenance Process Strategic Analysis

    Science.gov (United States)

    Jasiulewicz-Kaczmarek, M.; Stachowiak, A.

    2016-08-01

    The performance and competitiveness of manufacturing companies is dependent on the availability, reliability and productivity of their production facilities. Low productivity, downtime, and poor machine performance is often linked to inadequate plant maintenance, which in turn can lead to reduced production levels, increasing costs, lost market opportunities, and lower profits. These pressures have given firms worldwide the motivation to explore and embrace proactive maintenance strategies over the traditional reactive firefighting methods. The traditional view of maintenance has shifted into one of an overall view that encompasses Overall Equipment Efficiency, Stakeholders Management and Life Cycle assessment. From practical point of view it requires changes in approach to maintenance represented by managers and changes in actions performed within maintenance area. Managers have to understand that maintenance is not only about repairs and conservations of machines and devices, but also actions striving for more efficient resources management and care for safety and health of employees. The purpose of the work is to present strategic analysis based on SWOT analysis to identify the opportunities and strengths of maintenance process, to benefit from them as much as possible, as well as to identify weaknesses and threats, so that they could be eliminated or minimized.

  19. Preventive maintenance by vibratory analysis: case study

    Directory of Open Access Journals (Sweden)

    Amal Boukili,

    2015-08-01

    Full Text Available :The majority of the industrial machine components have to satisfy to the requirements of the high quality and incessantly increasing; so the machines maintaining in good state during the production has became a fundamental point for a product or a company success. Through the measure of the predictive maintenance, it is possible to satisfy these complex requirements with success and to reduce the costs of maintenance. However, an optimization of the maintenance is realized by a continued monitoring of degradation, by way of a control system on line “On Line”, which can respond to industrial imperatives and which provides to define just the necessary at the level of interventions, “The machine can’t be serviced except if only its state requires.”For an effective maintenance, it takes precise and reliable measures. Nevertheless, the experience has shown that the vibratory measure is the most reliable parameter that gives the precociously and with a best ways the deterioration state of a turnable machine. It provides to identify the efforts as soon as they appear, before of an irreversible damage, it also provides, after analysis, to deduce the origin and to estimate the breakdown risks.In this context, a study had done inside a workshop of a phosphoric office, which adopt a continued surveillance (On-Line, in the hope of doing an optimal process of a conditional maintenance which can be developed in time toward an idealized by a vibratory indicator accomplishing satisfactory results.

  20. Powerful drivers for maintenance.

    Science.gov (United States)

    Mason, Steve

    2013-10-01

    A UPS system is the central building block of a Power Continuity Plan in medical facilities, but such equipment requires careful maintenance to continue fulfilling its vital role in delivering power resilience, and avoid catastrophic downtime, and potentially tens of thousands of pounds in costs to rectify the issues caused by poor maintenance. In our latest technical guidance article, Steve Mason, MD at Bender UK, one of the leading providers of isolated power supplies, theatre control panels, UPS systems, and Steris surgical products, and a turnkey provider of solutions for safe handling of electrical power and advanced provision of critical care products, examines some of the issue surrounding UPS maintenance.

  1. Mobile network maintenance (GSM)

    CERN Multimedia

    IT Department

    2009-01-01

    Maintenance work will be carried out on the CERN mobile network infrastructure (GSM) on the 23 and 24 July from 6 p.m. to 6 a.m. in order to replace discontinued equipment and to increase the bandwidth capacity of the GSM mobile network. All CERN GSM emitters (40 units) will be moved one by one to the new infrastructure during the maintenance. The call of a user connected to an emitter at the time of its maintenance will be cut off. However, the general overlapping of the GSM radio coverage should mean that users are able immediately to call again should their call be interrupted. IT/CS/CS

  2. Health Maintenance Restaurant

    Institute of Scientific and Technical Information of China (English)

    JANE SHAW

    1994-01-01

    Arestaurant named "Health Maintenance Restaurant" which serves dishes cooked with traditional Chinese medicine recently opened at Xiyuan Hotel in western Beijing. Entering the restaurant, you’ll see the god of longevity on the

  3. Living Technology

    DEFF Research Database (Denmark)

    2010-01-01

    This book is aimed at anyone who is interested in learning more about living technology, whether coming from business, the government, policy centers, academia, or anywhere else. Its purpose is to help people to learn what living technology is, what it might develop into, and how it might impact...... our lives. The phrase 'living technology' was coined to refer to technology that is alive as well as technology that is useful because it shares the fundamental properties of living systems. In particular, the invention of this phrase was called for to describe the trend of our technology becoming...... increasingly life-like or literally alive. Still, the phrase has different interpretations depending on how one views what life is. This book presents nineteen perspectives on living technology. Taken together, the interviews convey the collective wisdom on living technology's power and promise, as well as its...

  4. Living Technology

    DEFF Research Database (Denmark)

    2010-01-01

    This book is aimed at anyone who is interested in learning more about living technology, whether coming from business, the government, policy centers, academia, or anywhere else. Its purpose is to help people to learn what living technology is, what it might develop into, and how it might impact...... our lives. The phrase 'living technology' was coined to refer to technology that is alive as well as technology that is useful because it shares the fundamental properties of living systems. In particular, the invention of this phrase was called for to describe the trend of our technology becoming...... increasingly life-like or literally alive. Still, the phrase has different interpretations depending on how one views what life is. This book presents nineteen perspectives on living technology. Taken together, the interviews convey the collective wisdom on living technology's power and promise, as well as its...

  5. Information use in colonial living.

    Science.gov (United States)

    Evans, Julian C; Votier, Stephen C; Dall, Sasha R X

    2016-08-01

    Despite the fact that many animals live in groups, there is still no clear consensus about the ecological or evolutionary mechanisms underlying colonial living. Recently, research has suggested that colonies may be important as sources of social information. The ready availability of information from conspecifics allows animals to make better decisions about avoiding predators, reducing brood parasitism, migratory phenology, mate choice, habitat choice and foraging. These choices can play a large part in the development and maintenance of colonies. Here we review the types of information provided by colonial animals and examine the different ways in which decision-making in colonies can be enhanced by social information. We discuss what roles information might take in the evolution, formation and maintenance of colonies. In the process, we illustrate that information use permeates all aspects of colonial living.

  6. [Cultivation of pathogenic free-living amoebae].

    Science.gov (United States)

    Peng, Heng; Zhu, Huai-Min

    2009-08-01

    The isolation and culture of pathogenic free-living amoebae are useful in the diagnosis and research. This review focuses on the methods of isolation and cultivation of pathogenic free-living amoebae, including sample treatment, culture conditions, passage culture, pathogen detection, and maintenance.

  7. Maintenance Chemotherapy of Stage Ⅲ Epithelial Ovarian Carcinoma-Focusing on Individualized Maintenance Chemotherapy

    Institute of Scientific and Technical Information of China (English)

    Xiaodong Zhao; Yi Zhang; Qiao Zhang

    2005-01-01

    OBJECTIVE To investigate the role of maintenance chemotherapy on stage Ⅲ ovarian carcinoma.METHODS A retrospective analysis was conducted of 47 stage Ⅲ ovarian carcinoma patients with clinical complete remission after first-line chemotherapy. Among these patients, 21 cases were treated with maintenance chemotherapy, while the other 26 cases were free of treatment until progression. The 2 groups were compared with respect to progression-free survival (PFS) and overall survival(OS).RESULTS The median PFS and OS were not significantly different between the 2 groups. For those patients, in a subgroup of suboptimal surgery (residual disease >2 cm), the median PFS was 110 weeks and 56 weeks and the median OS was 223 weeks and 157 weeks for the maintenance and non-treated respectively. Both PFS and OS values favoured the maintenance group, P=0.004 and P=0.015 respectively. In a subgroup of optimal surgery (residual disease ≤2 cm), the differences were not significant.CONCLUSION Patients with stage Ⅲ ovarian carcinoma with clinical complete remission may benefit from maintenance chemotherapy, if the residual disease is >2 cm. To those with a residual disease ≤2 cm, the maintenance chemotherapy maybe of no value. So "individualized maintenance chemotherapy" should be conducted in the clinical setting.

  8. 小型无人机在输电线路巡视及检修中的应用%Application of Transmission Line Patroling and Maintenance with Smal Unmanned Aerial Vehicle

    Institute of Scientific and Technical Information of China (English)

    肖重金; 孙双学

    2015-01-01

    in view of the transmission line complex geographical environment,the line work high labor intensity,low efficiency, small unmanned aerial vehicle for its convenient and flexible control performance,gradually in the overhead line patrol and inspection application promotion.This paper introduces the small unmanned aerial vehicle is mainly used in power transmission line inspection scope, through relevant engineering examples of its application status in this paper,and put forward the corresponding training system form.%针对输电线路地理环境复杂,线路高空作业劳动强度大、效率低等问题,小型无人机以其方便灵活的操控性能,在架空线路巡视与检修中得到逐步应用推广.本文介绍了小型无人机在输电线路巡检中的主要应用范围,通过相关工程实例对其应用现状做出了阐述,并针对性提出相应培训体系的构成.

  9. Differing antidepressant maintenance methodologies.

    Science.gov (United States)

    Safer, Daniel J

    2017-10-01

    The principle evidence that antidepressant medication (ADM) is an effective maintenance treatment for adults with major depressive disorder (MDD) is from placebo substitution trials. These trials enter responders from ADM efficacy trials into randomized, double-blind placebo-controlled (RDBPC) effectiveness trials to measure the rate of MDD relapse over time. However, other randomized maintenance trial methodologies merit consideration and comparison. A systematic review of ADM randomized maintenance trials included research reports from multiple databases. Relapse rate was the main effectiveness outcome assessed. Five ADM randomized maintenance methodologies for MDD responders are described and compared for outcome. These effectiveness trials include: placebo-substitution, ADM/placebo extension, ADM extension, ADM vs. psychotherapy, and treatment as usual. The placebo-substitution trials for those abruptly switched to placebo resulted in unusually high (46%) rates of relapse over 6-12months, twice the continuing ADM rate. These trials were characterized by selective screening, high attrition, an anxious anticipation of a switch to placebo, and a risk of drug withdrawal symptoms. Selectively screened ADM efficacy responders who entered into 4-12month extension trials experienced relapse rates averaging ~10% with a low attrition rate. Non-industry sponsored randomized trials of adults with multiple prior MDD episodes who were treated with ADM maintenance for 1-2years experienced relapse rates averaging 40%. Placebo substitution trial methodology represents only one approach to assess ADM maintenance. Antidepressant maintenance research for adults with MDD should be evaluated for industry sponsorship, attrition, the impact of the switch to placebo, and major relapse differences in MDD subpopulations. Copyright © 2017. Published by Elsevier Inc.

  10. Maintenance system improvement in cast iron foundry

    Directory of Open Access Journals (Sweden)

    S. Kukla

    2011-07-01

    Full Text Available The work presents the issue of technical equipment management in an iron foundry basing on the assumptions of the TPM system (Total Productive Maintenance. Exploitation analysis of automatic casting lines has been carried out and their work’s influence on the whole production system’s functioning has been researched. Within maintenance system improvement, implementation of autonomic service and planned lines’ review have been proposed in order to minimize the time of breakdown stoppages. The SMED method was used to optimize changeover time, and the OEE (Overall Equipment Effectiveness was applied to evaluate the level of resources usage before and after implementing changes. Further, the influence of the maintenance strategy of casting devices’ efficiency on own costs of casting manufac- ture was estimated.

  11. Flight control electronics reliability/maintenance study

    Science.gov (United States)

    Dade, W. W.; Edwards, R. H.; Katt, G. T.; Mcclellan, K. L.; Shomber, H. A.

    1977-01-01

    Collection and analysis of data are reported that concern the reliability and maintenance experience of flight control system electronics currently in use on passenger carrying jet aircraft. Two airlines B-747 airplane fleets were analyzed to assess the component reliability, system functional reliability, and achieved availability of the CAT II configuration flight control system. Also assessed were the costs generated by this system in the categories of spare equipment, schedule irregularity, and line and shop maintenance. The results indicate that although there is a marked difference in the geographic location and route pattern between the airlines studied, there is a close similarity in the reliability and the maintenance costs associated with the flight control electronics.

  12. Maintenance strategies after first-line oxaliplatin plus fluoropyrimidine plus bevacizumab for patients with metastatic colorectal cancer (AIO 0207): a randomised, non-inferiority, open-label, phase 3 trial.

    Science.gov (United States)

    Hegewisch-Becker, Susanna; Graeven, Ullrich; Lerchenmüller, Christian A; Killing, Birgitta; Depenbusch, Reinhard; Steffens, Claus-Christoph; Al-Batran, Salah-Eddin; Lange, Thoralf; Dietrich, Georg; Stoehlmacher, Jan; Tannapfel, Andrea; Reinacher-Schick, Anke; Quidde, Julia; Trarbach, Tanja; Hinke, Axel; Schmoll, Hans-Joachim; Arnold, Dirk

    2015-10-01

    The definition of a best maintenance strategy following combination chemotherapy plus bevacizumab in metastatic colorectal cancer is unclear. We investigated whether no continuation of therapy or bevacizumab alone are non-inferior to fluoropyrimidine plus bevacizumab, following induction treatment with a fluoropyrimidine plus oxaliplatin plus bevacizumab. In this open-label, non-inferiority, randomised phase 3 trial, we included patients aged 18 years or older with histologically confirmed, previously untreated metastatic colorectal cancer, Eastern Cooperative Oncology Group (ECOG) performance status of 0-2, adequate bone marrow, liver, and renal function, no pre-existing neuropathy greater than grade 1, and measurable disease, from 55 hospitals and 51 private practices in Germany. After 24 weeks of induction therapy with either fluorouracil plus leucovorin plus oxaliplatin or capecitabine plus oxaliplatin, both with bevacizumab, patients without disease progression were randomly assigned centrally by fax (1:1:1) to standard maintenance treatment with a fluoropyrimidine plus bevacizumab, bevacizumab alone, or no treatment. Both patients and investigators were aware of treatment assignment. Stratification criteria were response status, termination of oxaliplatin, previous adjuvant treatment with oxaliplatin, and ECOG performance status. At first progression, re-induction with all drugs of the induction treatment was a planned part of the protocol. Time to failure of strategy was the primary endpoint, defined as time from randomisation to second progression after maintenance (and if applicable re-induction), death, or initiation of further treatment including a new drug. Time to failure of strategy was equivalent to time to first progression for patients who did not receive re-induction (for any reason). The boundary for assessment of non-inferiority was upper limit of the one-sided 98·8% CI 1·43. Analyses were done by intention to treat. The study has completed

  13. Maintenance Therapy With Cetuximab Every Second Week in the First-Line Treatment of Metastatic Colorectal Cancer: The NORDIC-7.5 Study by the Nordic Colorectal Cancer Biomodulation Group.

    Science.gov (United States)

    Pfeiffer, Per; Sorbye, Hafdan; Qvortrup, Camilla; Karlberg, Mia; Kersten, Christian; Vistisen, Kirsten; Lindh, Birgitta; Bjerregaard, Jon Kroll; Glimelius, Bengt

    2015-09-01

    In the NORDIC-7.5 trial, how cetuximab might safely and conveniently be added to an intermittent treatment strategy in patients with prospectively selected Kirsten rat sarcoma viral oncogene homolog wild type (KRASwt) metastatic colorectal cancer (mCRC) was investigated. Patients were treated in a multicenter phase II trial with cetuximab in combination with the Nordic bolus FLOX (oxaliplatin, 5-fluorouracil, and folinic acid) for 4 months followed by maintenance cetuximab. Patients had KRASwt, nonresectable mCRC, no previous chemotherapy, and Eastern Cooperative Group performance status of 0 to 2. Patients received 8 courses of Nordic FLOX (oxaliplatin 85 mg/m(2) over 1 hour on day 1, and 5-fluorouracil 500 mg/m(2) as a bolus injection, followed 30 minutes later with bolus folinic acid 60 mg/m(2) on days 1 and 2). Cetuximab was administered every 2 weeks at a dose of 500 mg/m(2) for 16 weeks followed by cetuximab as maintenance therapy until disease progression. Between July 2008 and September 2010, 152 KRASwt patients were included. The response rate was 62% (95% confidence interval [CI], 54%-69%), median progression-free survival was 8.0 months (95% CI, 7.5-8.9) and median overall survival was 23.2 (95% CI, 18.1-27.4) months. Twenty-one patients (14%) had later R0-resection of metastasis. FLOX with cetuximab was reintroduced in 47 of 85 patients (55%). The most common Grade 3/4 nonhematologic adverse events were diarrhea in 14 patients (9%), skin rash in 13 patients (9%), infection without neutropenia in 11 patients (7%), and fatigue in 11 patients (7%). In a prospectively selected KRASwt population, biweekly cetuximab was safely integrated in an intermittent chemotherapy strategy and might have added to a longer chemotherapy-free interval. However, the combination of biweekly cetuximab with chemotherapy needs to be validated in trials using FOLFOX (oxaliplatin, fluorouracil, and leucovorin) or FOLFIRI (irinotecan, fluorouracil, and leucovorin). Copyright

  14. Operation and Maintenance of ± 660 kV Ningxia -Shandong Direct Current Transmission Line%±660kV银东直流输电线路的运行与维护

    Institute of Scientific and Technical Information of China (English)

    张景沛; 白小保; 张志峰

    2012-01-01

    Based on analysis of operation features of direct current line, the authors put forward that faults prevention of ± 660 kV direct current transmission line should be taken suggestions of taking shield failure, strengthening dirty monitoring,improving prevent pollution level, paying attention to infrared & ultra violet monitoring and selecting each monitoring data.%在分析直流线路的运行特性的基础上.提出±660kV直流输电线路的故障防治应以直流线路防雷保护以防绕击为主、加强污秽监测、提高防污水平、注重线路的红外紫外检测与各项监测数据收集等维护的建议、

  15. Reliability Centered Maintenance - Methodologies

    Science.gov (United States)

    Kammerer, Catherine C.

    2009-01-01

    Journal article about Reliability Centered Maintenance (RCM) methodologies used by United Space Alliance, LLC (USA) in support of the Space Shuttle Program at Kennedy Space Center. The USA Reliability Centered Maintenance program differs from traditional RCM programs because various methodologies are utilized to take advantage of their respective strengths for each application. Based on operational experience, USA has customized the traditional RCM methodology into a streamlined lean logic path and has implemented the use of statistical tools to drive the process. USA RCM has integrated many of the L6S tools into both RCM methodologies. The tools utilized in the Measure, Analyze, and Improve phases of a Lean Six Sigma project lend themselves to application in the RCM process. All USA RCM methodologies meet the requirements defined in SAE JA 1011, Evaluation Criteria for Reliability-Centered Maintenance (RCM) Processes. The proposed article explores these methodologies.

  16. PROACTIVE STRATEGY MAINTENANCE

    Directory of Open Access Journals (Sweden)

    Stanisław RADKOWSKI

    2014-03-01

    Full Text Available Given challenging competition of today service providers are required to be more proactive in satisfying the environmental conditions and customer needs. Proactive maintenance should start at the design stage with establishing the functions, functional failures and failure modes. The understanding the failure behavior, especially the relationship between potential failures, functional failures and diagnostic parameters is the most important task. In the next step the designer have to explore the maintenance activities as they have to apply to the design criteria. The models and frameworks have been presented in the paper also a comprehensive review of literature and some results of laboratory investigations.

  17. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    TS Department

    2008-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 8 p.m. and midnight on 3 December. During this time, the fixed-line telephone and audio-conference services may be disrupted. However, the CCC and the Fire Brigade will be reachable at all times. Mobile telephone services (GSM) will not be affected by this work. For further details please contact Netops@cern.ch.

  18. Maintenance of the CERN telephone exchanges

    CERN Multimedia

    TS Department

    2008-01-01

    Maintenance work will be carried out on the CERN telephone exchanges between 8 p.m. and midnight on 3 December. During this time, the fixed-line telephone and audio-conference services may be disrupted. However, the CCC and the Fire Brigade will be reachable at all times. Mobile telephone services (GSM) will not be affected by this work. For further details please contact mailto:Netops@cern.ch.

  19. Maintenance and hazardous substances

    NARCIS (Netherlands)

    Kuhl, K.; Terwoert, J.; Cabecas, J.J.M.

    2012-01-01

    Maintenance workers come into close contact with a broad variety of often hazardous chemicals. Depending on the specific type, these chemicals may not only cause diseases like skin sores or cancer, but many of them are highly flammable and explosive. This e-facts focuses on the specific risks relate

  20. Industrial Mechanical Maintenance.

    Science.gov (United States)

    Hendrix, Laborn J.

    This manual was developed to assist teachers in Oklahoma in preparing students for industrial mechanical maintenance. The materials in this teacher's guide are organized in 14 units of instruction covering the following four areas: receiving and setting equipment; equipment hookup and operation; equipment layout, anchoring, and setup; and…

  1. Maintenance: problem and solution

    CERN Multimedia

    CERN Bulletin

    2012-01-01

    Equipment that is often unique, machines that are as old as the Laboratory, continuous and demanding performance requirements: these are the challenges faced by CERN’s accelerator maintenance teams. There are some twenty such teams, attached to different departments. A new project aims to standardise their procedures to make their work easier, and you can be a part of it.   “For the past year or so, the Accelerator and Technologies Sector and the GS Department have been working together on identifying the needs of the different teams that perform maintenance on CERN’s equipment. We are now ready to provide computer support with detailed specifics about the processes that need to be set up,” explains Goran Perinić, one of the leaders in CERN’s new Maintenance Management project (MMP). Since the LHC entered operation, the responsibilities of the technical teams have been broadened to cover maintenance of the collider and that of its injectors...

  2. Operations and maintenance philosophy

    Energy Technology Data Exchange (ETDEWEB)

    DUNCAN, G.P.

    1999-10-28

    This Operations and Maintenance (O&M) Philosophy document is intended to establish a future O&M vision, with an increased focus on minimizing worker exposure, ensuring uninterrupted retrieval operations, and minimizing operation life-cycle cost. It is intended that this document would incorporate O&M lessons learned into on-going and future project upgrades.

  3. Telephone Exchange Maintenance

    CERN Multimedia

    2005-01-01

    Urgent maintenance work on CERN telephone exchanges will be performed on 24 March from 6 a.m. to 8 a.m. Telephone services may be disrupted or even interrupted during this time. For more details, please contact us by email at Standard.Telephone@cern.ch.

  4. Electrical Maintenance Technician.

    Science.gov (United States)

    Ohio State Univ., Columbus. Center on Education and Training for Employment.

    This document contains 30 units to consider for use in a tech prep competency profile for the occupation of electrical maintenance technician. All the units listed will not necessarily apply to every situation or tech prep consortium, nor will all the competencies within each unit be appropriate. Several units appear within each specific…

  5. Parallel Lines

    Directory of Open Access Journals (Sweden)

    James G. Worner

    2017-05-01

    Full Text Available James Worner is an Australian-based writer and scholar currently pursuing a PhD at the University of Technology Sydney. His research seeks to expose masculinities lost in the shadow of Australia’s Anzac hegemony while exploring new opportunities for contemporary historiography. He is the recipient of the Doctoral Scholarship in Historical Consciousness at the university’s Australian Centre of Public History and will be hosted by the University of Bologna during 2017 on a doctoral research writing scholarship.   ‘Parallel Lines’ is one of a collection of stories, The Shapes of Us, exploring liminal spaces of modern life: class, gender, sexuality, race, religion and education. It looks at lives, like lines, that do not meet but which travel in proximity, simultaneously attracted and repelled. James’ short stories have been published in various journals and anthologies.

  6. Maintenance in sustainable manufacturing

    Directory of Open Access Journals (Sweden)

    Vladimir Stuchly

    2014-09-01

    Full Text Available Background: Sustainable development is about reaching a balance between economic, social, and environmental goals, as well as people's participation in the planning process in order to gain their input and support. For a company, sustainable development means adoption of such business strategy and actions that contribute to satisfying present needs of company and stakeholders, as well as simultaneous protection, maintenance and strengthening of human and environmental potential which will be needed in the future. This new approach forces manufacturing companies to change their previous management paradigms. New management paradigm should include new issues and develop innovative methods, practices and technologies striving for solving problem of shortages of resources, softening environment overload and enabling development of environment-friendly lifecycle of products. Hence, its realization requires updating existing production models as they are based on previously accepted paradigm of unlimited resources and unlimited regeneration capabilities. Maintenance plays a crucial role because of its impact on availability, reliability, quality and life cycle cost, thus it should be one of the main pillars of new business running model.  Material and methods: The following paper is a result of research on the literature and observation of practices undertaken by a company within maintenance area. Results and conclusions: The main message is that considering sustainable manufacturing requires considerable expanding range of analysis and focusing on supporting processes. Maintenance offers numerous opportunities of decreasing influence of business processes on natural environment and more efficient resources utilization. The goal of maintenance processes realizing sustainable development strategy is increased profitability of exploitation and optimization of total lifecycle cost without disturbing safety and environmental issues. 

  7. Maintenance therapy with vinflunine plus best supportive care versus best supportive care alone in patients with advanced urothelial carcinoma with a response after first-line chemotherapy (MAJA; SOGUG 2011/02): a multicentre, randomised, controlled, open-label, phase 2 trial.

    Science.gov (United States)

    García-Donas, Jesus; Font, Albert; Pérez-Valderrama, Begoña; Virizuela, José Antonio; Climent, Miquel Ángel; Hernando-Polo, Susana; Arranz, José Ángel; Del Mar Llorente, Maria; Lainez, Nuria; Villa-Guzmán, José Carlos; Mellado, Begoña; Del Alba, Aránzazu González; Castellano, Daniel; Gallardo, Enrique; Anido, Urbano; Del Muro, Xavier García; Domènech, Montserrat; Puente, Javier; Morales-Barrera, Rafael; Pérez-Gracia, Jose Luis; Bellmunt, Joaquim

    2017-05-01

    Maintenance therapy improves outcomes in various tumour types, but cumulative toxic effects limit the choice of drugs. We investigated whether maintenance therapy with vinflunine would delay disease progression in patients with advanced urothelial carcinoma who had achieved disease control with first-line chemotherapy. We did a randomised, controlled, open-label, phase 2 trial in 21 Spanish hospitals. Eligible patients had locally advanced, surgically unresectable, or metastatic transitional-cell carcinoma of the urothelial tract, adequate organ function, and disease control after four to six cycles of cisplatin and gemcitabine (carboplatin allowed after cycle four). Patients were randomly assigned (1:1) to receive vinflunine or best supportive care until disease progression. We initially used block randomisation with a block size of six. Four lists were created for the two stratification factors of starting dose of vinflunine and presence of liver metastases. After a protocol amendment, number of cisplatin and gemcitabine cycles was added as a stratification factor, and eight lists were created, still with a block size of six. Finally, we changed to a minimisation procedure to reduce the risk of imbalance between groups. Vinflunine was given every 21 days as a 20 min intravenous infusion at 320 mg/m(2) or at 280 mg/m(2) in patients with an Eastern Cooperative Oncology Group performance status score of 1, age 75 years or older, previous pelvic radiotherapy, or creatinine clearance lower than 60 mL/min. The primary endpoint was median progression-free survival longer than 5·3 months in the vinflunine group, assessed by modified intention to treat. Comparison of progression-free survival between treatment groups was a secondary endpoint. This trial is registered with ClinicalTrials.gov, number NCT01529411. Between April 12, 2012, and Jan 29, 2015, we enrolled 88 patients, of whom 45 were assigned to receive vinflunine and 43 to receive best supportive care. One

  8. Assisted Living

    Science.gov (United States)

    ... term care and institutional living. Sheltered Housing Sheltered housing is often in a home that offers personal-care support, housekeeping services, and meals. Social work services and coordination for activities can be ...

  9. Assisted Living

    Science.gov (United States)

    ... if needs change. Assisted living costs less than nursing home care. It is still fairly expensive. Older people or their families usually pay for it. Health and long-term care insurance policies may cover ...

  10. Live Well

    Science.gov (United States)

    ... message, please visit this page: About CDC.gov . HIV Treatment Works Get In Care HIV 101 Locate a ... Sharing Your Status Stay In Care Understanding Care HIV Treatment Cost of HIV Treatment Related Health Conditions Live ...

  11. Scientific Opinion on the substantiation of a health claim related to fat-free yogurts and fermented milks with live yogurt cultures complying with the specifications ?fat free?, ?low in sugars?, ?high protein?, ?source of calcium? and ?source of vitamin D? for nutrition claims and maintenance of lean body mass in the context of an energy-restricted diet pursuant to Article 13.5 of Regulation (EC No 1924/2006

    Directory of Open Access Journals (Sweden)

    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA

    2015-01-01

    Full Text Available Following an application from Federación Nacional de Industrias Lácteas (FeNIL, submitted pursuant to Article 13.5 of Regulation (EC No 1924/2006 via the Competent Authority of Spain, the Panel on Dietetic Products, Nutrition and Allergies (NDA was asked to deliver an opinion on the scientific substantiation of a health claim related to fat-free yogurts and fermented milks with live yogurt cultures complying with the specifications “fat free”, “low in sugars”, “high protein”, “source of calcium” and “source of vitamin D” for nutrition claims and maintenance of lean body mass in the context of an energy-restricted diet. The Panel considers that the food that is the subject of the claim, fat-free yogurts and fermented milks complying with the specifications “fat free”, “low in sugars”, “high protein”, “source of calcium” and “source of vitamin D” for nutrition claims, is sufficiently characterised. The Panel considers that maintenance of lean body mass in the context of an energy-restricted diet is a beneficial physiological effect. No human intervention studies from which conclusions could be drawn for the scientific substantiation of the claim were provided. The Panel concludes that a cause and effect relationship has not been established between the consumption of fat-free yogurts and fermented milks with live yogurt cultures complying with the specifications “fat free”, “low in sugars”, “high protein”, “source of calcium” and “source of vitamin D” for nutrition claims and maintenance of lean body mass in the context of an energy-restricted diet.

  12. 哈大铁路客运专线高速无砟道岔工电联调常见问题解析及探讨%Approach to Common Problems in Integrated Commissioning of Ballastless Switches by Maintenance and Communication/signal Divisions on Harbin-Dalian Passenger Dedicated Line

    Institute of Scientific and Technical Information of China (English)

    李先明; 王基全; 张先军; 朱海城; 孙玉兰

    2012-01-01

    介绍哈大铁路客运专线高速无砟道岔在工电联调过程中常见的问题,对问题产生的原因进行探讨,针对验收问题和验收要求提出解决措施,并对道岔铺设工作提出建议,对哈大客运专线无砟高速道岔以及今后国产道岔的铺设和验收过程具有重要的指导和参考意义.%This paper introduces some common problems encountered during integrated commissioning of ballastless switches by maintenance and communication/signal divisions on Harbin - Dalian Passenger Dedicated Line, discusses the causes of the problems and solutions to the acceptance issues, and puts forward proposals for switch laying, which is significant to guide and serve the installation and acceptance of high speed ballastless switches on Harbin - Dalian Passenger Dedicated Line in particular and future domestic switches in General.

  13. Predictors of weight maintenance

    NARCIS (Netherlands)

    Pasman, W.J.; Saris, W.H.M.; Westerterp-Plantenga, M.S.

    1999-01-01

    Objective: To obtain predictors of weight maintenance after a weight-loss intervention. Research Methods and Procedures: An overall analysis of data from two-long intervention studies [n = 67 women; age: 37.9±1.0 years; body weight (BW): 87.0±1.2 kg; body mass index: 32.1±0.5 kg·m-2; % body fat: 42.

  14. Predictors of weight maintenance

    NARCIS (Netherlands)

    Pasman, W.J.; Saris, W.H.M.; Westerterp-Plantenga, M.S.

    1999-01-01

    Objective: To obtain predictors of weight maintenance after a weight-loss intervention. Research Methods and Procedures: An overall analysis of data from two-long intervention studies [n = 67 women; age: 37.9±1.0 years; body weight (BW): 87.0±1.2 kg; body mass index: 32.1±0.5 kg·m-2; % body fat: 42.

  15. Missile Maintenance Career Ladder

    Science.gov (United States)

    1994-01-01

    K696 INSPECT GENERAL PURPOSE EQUIPMENT 48 E176 LOCATE INFORMATION IN TOs 44 F235 PERFORM PREOPERATIONAL CHECKS ON MECHANICAL 42 MAINTENANCE SUPPORT...ON COLORIMETRIC GAS DETECTORS 24 27 TABLE 9 REPRESENTATIVE TASKS PERFORMED BY 2M052A PERSONNEL PERCENT MEMBERS PERFORMING TASKS (N=436) E176 LOCATE...AS STAFF MEETINGS, 67 BRIEFINGS, CONFERENCES, OR WORKSHOPS B30 CONDUCT PERFORMANCE FEEDBACK WORKSHEET SESSIONS 64 E176 LOCATE INFORMATION IN TOs 57

  16. Predictors of weight maintenance

    NARCIS (Netherlands)

    Pasman, W.J.; Saris, W.H.M.; Westerterp-Plantenga, M.S.

    1999-01-01

    Objective: To obtain predictors of weight maintenance after a weight-loss intervention. Research Methods and Procedures: An overall analysis of data from two-long intervention studies [n = 67 women; age: 37.9±1.0 years; body weight (BW): 87.0±1.2 kg; body mass index: 32.1±0.5 kg·m-2; % body fat:

  17. Maintenance Reliability Program as Essential Prerequisite of Flight Safety

    OpenAIRE

    Željko Marušić; Izidor Alfirević; Omer Pita

    2009-01-01

    This article is dealing with airline industry standards regarding reliability reporting and with practical aspects of reliability program deployment within an operator’s organization. Reliability program is a tool for monitoring the effectiveness of aircraft maintenance program. Apart from being an effective tool for maintenance program development, the reliability program can bring to light flaws in aircraft design, discrepant operational procedures, discrepancies in line and base maintenanc...

  18. Maintenance Reliability Program as Essential Prerequisite of Flight Safety

    OpenAIRE

    Željko Marušić; Izidor Alfirević; Omer Pita

    2009-01-01

    This article is dealing with airline industry standards regarding reliability reporting and with practical aspects of reliability program deployment within an operator’s organization. Reliability program is a tool for monitoring the effectiveness of aircraft maintenance program. Apart from being an effective tool for maintenance program development, the reliability program can bring to light flaws in aircraft design, discrepant operational procedures, discrepancies in line and base maintenanc...

  19. Global Outsourcing of Aircraft Maintenance

    OpenAIRE

    McFadden, Michael; Worrells, D. Scott

    2012-01-01

    Before the airlines were deregulated, the majority of air carriers conducted their maintenance in-house. After deregulation, with competitive pressures mounting and airlines failing and starting up seemingly simultaneously, the outsourcing of maintenance became more prevalent. Not restricted to U.S. airlines, outsourcing maintenance has become a global practice. Factors involved in the outsourcing decision range from a startup not having the capital to develop their own in-house maintenance p...

  20. Maintenance of transport pipeline systems; Instandhaltung von Transportleitungssystemen

    Energy Technology Data Exchange (ETDEWEB)

    Sorge, Hans-Christian; Christen, Thomas; Maelzer, Hans-Joachim [IWW Rheinisch-Westfaelisches Institut fuer Wasser, Regionalstandort Rhein-Main, Bibesheim am Rhein (Germany). Bereich Wassernetze; Kappler, Kathrein [Hessenwasser GmbH und Co. KG, Gross-Gerau (Germany)

    2012-05-15

    The authors of the contribution under consideration describe a multi-criteria approach for the evaluation the timing and location of appropriate maintenance measures as part of a maintenance strategy for long-distance water pipelines and taking into account technical and economic risks. The innovative core consists of a powerful combination for the lifetime prediction, static component calculation, condition assessment and detailed cost analysis. The approach described here provides a detailed risk assessment of any number of line segments. For operators of transport systems, the required maintenance measures are identified and together with the associated costs compiled in an action plan.

  1. Living language

    CERN Document Server

    Shuttleworth, John

    2008-01-01

    Living Language 3rd edition' has been devised to meet all the new specifications for AS and A level English Language. The best-selling previous edition has been comprehensively revised to ensure full assessment objectives coverage and fulfilment, and delivery of the new four-unit courses from 2008 onwards. 'Living Language 3rd edition' provides linguistic theory, information and ideas which are easily accessed via supported activities and investigations. The text will actively develop students' skills in reading, listening and responding to an extensive range of text genres and data. Building

  2. Present and future techniques for automated power facility maintenance. Maintenance techniques for power transmission facilities

    Energy Technology Data Exchange (ETDEWEB)

    Taneichi, Takeshi; Takada, Nobuyuki

    1988-09-15

    Present automated information acquisition system of the maintenance services for overhead transmission lines is outlined, and in addition, the fault localization system with optical fiber composite overhead ground wires (OPGW) and fault locators, automated ice or snow coating monitoring system, and transmission tower site monitoring system are presented. As maintenance equipment, the automatic fitting equipment of low-snow coating rings, and remote measuring with a helicopter are presented. More applications of OPGW and more uses of robots for the maintenance services are pointed out as future trends. Present automated maintenance services for underground transmission lines are outlined, and in addition, the communication system of the oil leakage information of OF cables or failure information of cooling facilities, the automatic operation and monitoring system for cooling facilities, and the duct monitoring system to collect and montor operation, failure and control imformation are presented. The use of inspection robots and a computerized total facility management system are pointed out as future trends. (7 figs, 3 tabs, 3 refs)

  3. Outdoor Living.

    Science.gov (United States)

    Cotter, Kathy

    Course objectives and learning activities are contained in this curriculum guide for a 16-week home economics course which teaches cooking and sewing skills applicable to outdoor living. The course goals include increasing male enrollment in the home economics program, developing students' self-confidence and ability to work in groups, and…

  4. A maintenance time prediction method considering ergonomics through virtual reality simulation.

    Science.gov (United States)

    Zhou, Dong; Zhou, Xin-Xin; Guo, Zi-Yue; Lv, Chuan

    2016-01-01

    Maintenance time is a critical quantitative index in maintainability prediction. An efficient maintenance time measurement methodology plays an important role in early stage of the maintainability design. While traditional way to measure the maintenance time ignores the differences between line production and maintenance action. This paper proposes a corrective MOD method considering several important ergonomics factors to predict the maintenance time. With the help of the DELMIA analysis tools, the influence coefficient of several factors are discussed to correct the MOD value and the designers can measure maintenance time by calculating the sum of the corrective MOD time of each maintenance therbligs. Finally a case study is introduced, by maintaining the virtual prototype of APU motor starter in DELMIA, designer obtains the actual maintenance time by the proposed method, and the result verifies the effectiveness and accuracy of the proposed method.

  5. Factors Influencing Army Maintenance

    Science.gov (United States)

    1989-01-01

    battle damage cannot be eliminated in the design process, but fault isolation and repair, as well as routine and preventive maintenance, can be...documentation does not meet thebe requirements, the efficiency of the xmaintainer’s performance will be reduced. It Is often the case that documentation...sustain battle damage of various levels of severity; and 3) systems experience relatively high ube latES I- Obat. C..L. LI= C 4LILCLr42 L C LI=%-t I- iC

  6. Living Lands

    DEFF Research Database (Denmark)

    Christensen, Suna Møller

    2014-01-01

    , hunters attended to questions like safe-journeying on ice or the role of natural surroundings in children’s education, in ways revealing a relational perception of ‘nature’ and dissolving culture-nature dualisms. Hunters’ experiences in living the land afforded children a dwelling position from which...... of the social world pushes questions about education and life, disregarding being educated as human control of nature....

  7. Veterans Crisis Line: 1-800-273-8255

    Science.gov (United States)

    ... Expect Resource Locator Veterans Live Chat Veterans Text Homeless Veterans Live Chat Military Live Chat Deaf - Hard of Hearing Contact Us About About the Veterans Crisis Line FAQs Veteran Suicide Welcome to the Veterans ...

  8. Veterans Crisis Line: Videos About Reaching out for Help

    Science.gov (United States)

    ... Expect Resource Locator Veterans Live Chat Veterans Text Homeless Veterans Live Chat Military Live Chat Deaf - Hard of Hearing Contact Us About About the Veterans Crisis Line FAQs Veteran Suicide Spread the Word Videos ...

  9. Veterans Crisis Line: Videos About Reaching out for Help

    Medline Plus

    Full Text Available ... Expect Resource Locator Veterans Live Chat Veterans Text Homeless Veterans Live Chat Military Live Chat Deaf - Hard of Hearing Contact Us About About the Veterans Crisis Line FAQs Veteran Suicide Spread the Word Videos ...

  10. A special issue on DNA damage responses and genome maintenance

    Institute of Scientific and Technical Information of China (English)

    GuoMin Li; David J Chen; Sankar Mitra; John J Turchi

    2008-01-01

    @@ There is nothing more fundamental than the genome for the existence and main-tenance of all living beings. The importance of the genome is increasingly appreciated as recent discoveries have revealed that changes in the human genome, regardless of being inherited or induced, can result in diseases that either significantly shorten lives (as seen in cancer) or dramatically affect the quality of lives (often seen in neurodegenerative diseases). Therefore, maintaining genome integrity is critical for not only the con-tinuation of a species in evolution (although mutations may be occasionally beneficial during evolution) but also for longevity and general health.

  11. Practice on Dot-Line-Plane Curriculum Construction to Facilities Management and Preventive Maintenance in Vocational Colleges%高职《设备管理与预防维修》课程点线面建设的实践

    Institute of Scientific and Technical Information of China (English)

    张映红; 韦林; 韦华南; 朱瑞丹

    2011-01-01

    This paper introduced how to made construction of the course of facilities management and preventive maintenance prime curriculum that oriented by work process.It innovate′ dot-line-plane-solid′ progressive study instance in course design.This curriculum implement the unique teach mode of′ two-hand of study and engineering,work with training in cross-fusion′,which could improve teaching quality.It is the reference for construction of other high vocational curriculums.%基于工作过程为导向,以《设备管理与预防维修》国家精品课程建设为例,创新课程设计"点线面体"渐进的学习情境,实施"工学双线共进,实战训练交叉融合"独特的教学模式,以提高高职课程教学质量,为高职高专课程的建设提供借鉴。

  12. Buildings Lean Maintenance Implementation Model

    Science.gov (United States)

    Abreu, Antonio; Calado, João; Requeijo, José

    2016-11-01

    Nowadays, companies in global markets have to achieve high levels of performance and competitiveness to stay "alive".Within this assumption, the building maintenance cannot be done in a casual and improvised way due to the costs related. Starting with some discussion about lean management and building maintenance, this paper introduces a model to support the Lean Building Maintenance (LBM) approach. Finally based on a real case study from a Portuguese company, the benefits, challenges and difficulties are presented and discussed.

  13. Entretian Model for Software Maintenance

    Directory of Open Access Journals (Sweden)

    Priya K Betala

    2013-10-01

    Full Text Available Maintenance refers to the act of modifying the software after putting in use in order to maintain its usability.[1]. In other words, Software maintenance can be defined as; it is the process of providing services to the customers after the delivery of the software. Despite the fact that maintaining software is very challenging, it is the most important routine that must be carried out in the development cycle. If the software is not maintained efficiently it may lead to the death of the software. Maintenance of software may be carried out in two ways. The first one is called „In-house maintenance‟ and the second one is called „Transition maintenance‟. The latter faces the drastic challenges when compared to former, as one team may not provide complete source code to the other, leading to unstructured code, lack of appropriate technique and knowledge about the functioning of the current software. There are a few aspects of software maintenance that set it apart from the other phases. Software maintenance cost comprises more than half of the total software development cost. Also, without software maintenance, it is impossible to change the problems within the product after its release, and many disasters can happen because of immature software. Recognising the importance of software maintenance, this paper proposes a model called “ENTRETIAN MODEL” (Entretian, a French word meaning Maintenance which consists of six basic steps to follow while maintaining software system. This model overcomes certain misconceptions about maintenance phase and it is highly beneficial to the Maintenance Support Team (MST to handle their maintenance activities systematically and efficiently. By employing the proposed model, the MST is able to overcome the technical and managerial issues that are faced earlier in the maintenance phase. The advantage of using “Entretian Model” is best illustrated in this paper with the help of the ERP package.

  14. Croatian Language Maintenance in Canada

    Directory of Open Access Journals (Sweden)

    Ivana Petrović

    2017-01-01

    factors to be examined concern the absolute number of community members, their geographical distribution, the number of Croatian language speakers, and the number of those with Croatian as their mother tongue. According to the 2011 census, there were 114 880 Canadians of Croatian origin, representing an increase of 3.5% over 2006. In 2006, 110 880 Canadian residents reported Croatian ancestry, representing a percentage change of 12.5% from 2001. In 2001, there were 97 050 Canadians who self-identified as being of Croatian origin, representing a percentage change of 13% from 1996, when there were 84 495 Canadians of Croatian origin. Furthermore, census data show that the percentage of Canadians of Croatian origin reporting multiple ethnicity increased over the period; in 1996, there were 65.5% single ethnic origin responses, compared to 60% in 2001, 50.9% in 2006, and only 45.1% in 2011. In terms of geographical distribution of members of Croatian community in Canada, almost two thirds of all Canadians of Croatian descent (74 020 live in the province Ontario, with significant numbers also in British Columbia (19 855 and Alberta (10 055. The largest Croatian community is in the Toronto area, where 35 115 Croatians live, with significant numbers also in Vancouver (13 025 and Hamilton (11 640. The census data presented here indicate that demographic factors that positively influence Croatian language maintenance are the size of the linguistic group and geographic concentration of the group. More precisely, the absolute number of people of Croatian descent living in Canada is on the rise and the population of Croatian origin is mostly concentrated in the province of Ontario and in major urban centers in other provinces. On the other hand, the rise in the percentage of Canadians of Croatian descent reporting more than one ancestry could be viewed as a factor that negatively affects Croatian language maintenance. It is provided by the evidence of gradually changing marriage

  15. Guidelines for safe process operations and maintenance

    CERN Document Server

    2010-01-01

    First-line managers have to maintain the integrity of facilities, control manufacturing processes, and handle unusual or emergency situations, as well as respond to the pressures of production demand. On a daily basis, they are closest to the operating personnel who may be injured by a process accident, and they are in the best position to spot problem conditions and to act to contain them. This book offers these managers ""how-to"" information on process safety management program execution in the operations and maintenance departments, recommending technical and administrative process safety

  16. DCSP hardware maintenance system

    Energy Technology Data Exchange (ETDEWEB)

    Pazmino, M.

    1995-11-01

    This paper discusses the necessary changes to be implemented on the hardware side of the DCSP database. DCSP is currently tracking hardware maintenance costs in six separate databases. The goal is to develop a system that combines all data and works off a single database. Some of the tasks that will be discussed in this paper include adding the capability for report generation, creating a help package and preparing a users guide, testing the executable file, and populating the new database with data taken from the old database. A brief description of the basic process used in developing the system will also be discussed. Conclusions about the future of the database and the delivery of the final product are then addressed, based on research and the desired use of the system.

  17. Is Maintenance Therapy for Everyone?

    Science.gov (United States)

    Nooka, Ajay K; Lonial, Sagar

    2016-08-01

    Although myeloma remains an incurable disease among majority of myeloma patients, the prognosis has significantly improved after the introduction of novel agents. While more agents are being explored for their anti-myeloma activity, the more familiar agents with a better tolerability profile have been tested in the maintenance arena. Lenalidomide and bortezomib so far have shown promise as effective maintenance agents in prolonging PFS, and also OS in some studies. The current review aims at describing the clinical data supporting various maintenance therapies and also at providing some clarity to a few concerns associated with maintenance therapies.

  18. Remote maintenance development for ITER

    Energy Technology Data Exchange (ETDEWEB)

    Tada, Eisuke [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Shibanuma, Kiyoshi

    1998-04-01

    This paper describes the overall ITER remote maintenance design concept developed mainly for in-vessel components such as diverters and blankets, and outlines the ITER R and D program to develop remote handling equipment and radiation hard components. Reactor structures inside the ITER cryostat must be maintained remotely due to DT operation, making remote handling technology basic to reactor design. The overall maintenance scenario and design concepts have been developed, and maintenance design feasibility, including fabrication and testing of full-scale in-vessel remote maintenance handling equipment and tool, is being verified. (author)

  19. Knowledge representation for integrated plant operation and maintenance

    DEFF Research Database (Denmark)

    Lind, Morten

    2010-01-01

    Integrated operation and maintenance of process plants has many advantages. One advantage is the improved economy obtained by reducing the number of plant shutdowns. Another is to increase reliability of operation by monitoring of risk levels during on-line maintenance. Integrated plant operation...... and maintenance require knowledge bases which can capture the interactions between the two plant activities. As an example, taking out a component or a subsystem for maintenance during operation will require a knowledge base representing the interactions between plant structure, functions, operating states...... and goals and incorporate knowledge about redundancy and reliability data. Multilevel Flow Modeling can be used build knowledge bases representing plant goals and functions and has been applied for fault diagnosis and supervisory control but currently it does not take into account structural information...

  20. Potential of Computerized Maintenance Management System in Facilities Management

    Directory of Open Access Journals (Sweden)

    Noor Farisya Azahar

    2014-07-01

    Full Text Available For some time it has been clear that managing buildings or estates has been carried out in the context of what has become known as facilities management. British Institute of Facilities Management defined facilities management is the integration of multi-disciplinary activities within the built environment and the management of their impact upon people and the workplace. Effective facilities management is vital to the success of an organisation by contributing to the delivery of its strategic and operational objectives. Maintenance of buildings should be given serious attention before (stage design, during and after a building is completed. But total involvement in building maintenance is after the building is completed and during its operations. Residents of and property owners require their building to look attractive, durable and have a peaceful indoor environment and efficient. The objective of the maintenance management system is to stream line the vast maintenance information system to improve the productivity of an industrial plant. a good maintenance management system makes equipment and facilities available. This paper will discuss the fundamental steps of maintenance management program and Computerized Maintenance Management System (CMMS

  1. Illinois Occupational Skill Standards: Industrial Maintenance General Maintenance Cluster.

    Science.gov (United States)

    Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

    These skill standards for the industrial maintenance general maintenance cluster are intended to be a guide to workforce preparation program providers in defining content for their programs and to employers to establish the skills and standards necessary for job acquisition. An introduction provides the Illinois perspective; Illinois Occupational…

  2. Condition based maintenance in the context of opportunistic maintenance

    NARCIS (Netherlands)

    Koochaki, Javid; Bokhorst, Jos A. C.; Wortmann, Hans; Klingenberg, Warse

    2012-01-01

    Condition based maintenance (CBM) uses the operating condition of a component to predict a failure event. Compared to age based replacement (ABR), CBM usually results in higher availability and lower maintenance costs, since it tries to prevent unplanned downtime and avoid unnecessary preventive mai

  3. Condition based maintenance in the context of opportunistic maintenance

    NARCIS (Netherlands)

    Koochaki, Javid; Bokhorst, Jos A. C.; Wortmann, Hans; Klingenberg, Warse

    2012-01-01

    Condition based maintenance (CBM) uses the operating condition of a component to predict a failure event. Compared to age based replacement (ABR), CBM usually results in higher availability and lower maintenance costs, since it tries to prevent unplanned downtime and avoid unnecessary preventive

  4. Maintenance performance improvement with System Dynamics: A Corrective Maintenance showcase

    NARCIS (Netherlands)

    Deenen, R.E.M.; Van Daalen, C.E.; Koene, E.G.C.

    2008-01-01

    This paper presents a case study of an analysis of a Corrective Maintenance process to realize performance improvement. The Corrective Maintenance process is supported by SAP, which has indicated the performance realisation problem. System Dynamics is used in a Group Model Building process to

  5. Living edge

    DEFF Research Database (Denmark)

    Earon, Ofri

    2014-01-01

    of the involved actors at the border. By doing so, the study underlines a forgotten, yet important, role of this edge zone – being a zone of commonality between the house and city, between indoors and outdoors, between the man at home and the man at the street. The city of Copenhagen promotes porous borders...... is a collection of material from the case study of an ongoing PhD study titled: LIVING EDGE - The Architectural and Urban Prospect of Domestic Borders. The paper includes a description of the problem analysis, research question, method, discussion and conclusion....

  6. Fatigue Solutions for Maintenance: From Science to Workplace Reality

    Science.gov (United States)

    2011-12-01

    Association are work- ing on a Line Operations Safety Assessment ( LOSA ) program for line and maintenance operations. This peer-to-peer safety...without the potential topic bias that might occur when acquiring specific event-related fatigue factors. LOSA is not triggered by an event or accident...Data collected via LOSA can provide a general indication of baseline fatigue hazards within the workforce. Workshop delegates encouraged assessment

  7. The Development and Deployment of a Maintenance Operations Safety Survey.

    Science.gov (United States)

    Langer, Marie; Braithwaite, Graham R

    2016-11-01

    Based on the line operations safety audit (LOSA), two studies were conducted to develop and deploy an equivalent tool for aircraft maintenance: the maintenance operations safety survey (MOSS). Safety in aircraft maintenance is currently measured reactively, based on the number of audit findings, reportable events, incidents, or accidents. Proactive safety tools designed for monitoring routine operations, such as flight data monitoring and LOSA, have been developed predominantly for flight operations. In Study 1, development of MOSS, 12 test peer-to-peer observations were collected to investigate the practicalities of this approach. In Study 2, deployment of MOSS, seven expert observers collected 56 peer-to-peer observations of line maintenance checks at four stations. Narrative data were coded and analyzed according to the threat and error management (TEM) framework. In Study 1, a line check was identified as a suitable unit of observation. Communication and third-party data management were the key factors in gaining maintainer trust. Study 2 identified that on average, maintainers experienced 7.8 threats (operational complexities) and committed 2.5 errors per observation. The majority of threats and errors were inconsequential. Links between specific threats and errors leading to 36 undesired states were established. This research demonstrates that observations of routine maintenance operations are feasible. TEM-based results highlight successful management strategies that maintainers employ on a day-to-day basis. MOSS is a novel approach for safety data collection and analysis. It helps practitioners understand the nature of maintenance errors, promote an informed culture, and support safety management systems in the maintenance domain. © 2016, Human Factors and Ergonomics Society.

  8. In sync. Benefits accrue through reliability-centered maintenance.

    Science.gov (United States)

    Waier, Phil

    2002-06-01

    Reliability-centered maintenance (RCM) programs establish best practices to determine the condition of equipment as well as find root causes that signal imminent system or product failures. The reliability-centered approach monitors the conditions of systems, limiting the frequency of inspections. The reduced labor can often lead to significant bottom-line cost savings.

  9. 49 CFR 192.605 - Procedural manual for operations, maintenance, and emergencies.

    Science.gov (United States)

    2010-10-01

    ... maintenance activities and for emergency response. For transmission lines, the manual must also include... control room management procedures required by § 192.631. (c) Abnormal operation. For transmission lines... gas distribution operators that are operating transmission lines in connection with their...

  10. Essential role of VIPP1 in chloroplast envelope maintenance in Arabidopsis.

    Science.gov (United States)

    Zhang, Lingang; Kato, Yusuke; Otters, Stephanie; Vothknecht, Ute C; Sakamoto, Wataru

    2012-09-01

    VESICLE-INDUCING PROTEIN IN PLASTIDS1 (VIPP1), proposed to play a role in thylakoid biogenesis, is conserved in photosynthetic organisms and is closely related to Phage Shock Protein A (PspA), which is involved in plasma membrane integrity in Escherichia coli. This study showed that chloroplasts/plastids in Arabidopsis thaliana vipp1 knockdown and knockout mutants exhibit a unique morphology, forming balloon-like structures. This altered morphology, as well as lethality of vipp1, was complemented by expression of VIPP1 fused to green fluorescent protein (VIPP1-GFP). Several lines of evidence show that the balloon chloroplasts result from chloroplast swelling related to osmotic stress, implicating VIPP1 in the maintenance of plastid envelopes. In support of this, Arabidopsis VIPP1 rescued defective proton leakage in an E. coli pspA mutant. Microscopy observation of VIPP1-GFP in transgenic Arabidopsis revealed that VIPP1 forms large macrostructures that are integrated into various morphologies along the envelopes. Furthermore, live imaging revealed that VIPP1-GFP is highly mobile when chloroplasts are subjected to osmotic stress. VIPP1-GFP showed dynamic movement in the transparent area of spherical chloroplasts, as the fluorescent molecules formed filament-like structures likely derived from disassembly of the large VIPP1 complex. Collectively, our data demonstrate that VIPP1 is a multifunctional protein in chloroplasts that is critically important for envelope maintenance.

  11. Achieving world class maintenance status

    Energy Technology Data Exchange (ETDEWEB)

    Tomlingson, P.D. [Paul D. Tomingson Associates (United States)

    2007-08-15

    The article written by a management consultant, discusses the art of successful planning and operation of maintenance in mines considering factors such as benchmaking, key performance indices (KPIs) and frequency of procedures which can help achieve 'world class maintenance'. 1 fig.

  12. The Nordic maintenance care program

    DEFF Research Database (Denmark)

    Myburgh, Corrie; Brandborg-Olsen, Dorthe; Albert, Hanne;

    2013-01-01

    To describe and interpret Danish Chiropractors' perspectives regarding the purpose and rationale for using MC (maintenance care), its content, course and patient characteristics.......To describe and interpret Danish Chiropractors' perspectives regarding the purpose and rationale for using MC (maintenance care), its content, course and patient characteristics....

  13. Truth Maintenance in Automatic Planning.

    Science.gov (United States)

    The objective of this project was to explore the usefulness of incorporating truth maintenance system (TMS) technology into the design of planning...in the report. The six appendices describe the underlying research contributing to the design of the prototype system. Keywords: Truth maintenance, Planning search, Replanning, Nonmonotonic reasoning, Defeasible reasoning.

  14. Recent Research on Language Maintenance.

    Science.gov (United States)

    Garcia, MaryEllen

    2003-01-01

    Describes recent research on language maintenance to provide broad, worldwide coverage of different language contact situations. Surveys various countries in which research within ethnic and minority language communities illuminates language maintenance or shift, or revitalization, for that group. (Author/VWL)

  15. Subcontracting Railway Maintenance

    DEFF Research Database (Denmark)

    Thommesen, Jacob

    2010-01-01

    In several European countries, national railway operators have been dismantled and partly privatized to create new contractual relations where operations originally performed internally are now outsourced to several companies. Breaking up work across several independent organizational and commerc......In several European countries, national railway operators have been dismantled and partly privatized to create new contractual relations where operations originally performed internally are now outsourced to several companies. Breaking up work across several independent organizational...... railway infrastructure manager (InfraMan), whichis subcontracting maintenance tasks to other companies. InfraMan has implemented various central elements in managing their subcontractors. The latter are required to present a safety plan as part of their bid, they must be approved if they are to be awarded...... a contract, and the competencies of their employees working on the railway are controlled and provided by InfraMan. However, this regime faces a number of further challenges, including uncertainties related to the safety plans, contested responsibility for the education program, difficulties in controlling...

  16. Construction, repair and maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Hinger, R. [Terasen Pipelines, Calgary, AB (Canada); Wong, P. [KC Integrity Corp., Calgary, AB (Canada); Yeomans, M.; Glover, A. [TransCanada PipeLines Ltd., Calgary, AB (Canada)

    2003-07-01

    The presentations by Working Group 4 focused on construction, repair and maintenance of pipelines with particular reference to high-strength steels and their applications for natural gas transmission pipelines. Discussions focused on how technology can be used to provide cost-effective design and construction solutions for long distance pipelines in a manner that does not compromise safety and reliability. The role that carbon plays in increasing the toughness of steel was also discussed. A few fundamental changes in steel production technology and a reduction in carbon content can result in a simultaneous increase in strength and toughness of steels. The cost impact of this technology was summarized. It was concluded that high strength steels offer effective solutions to deliver cost-effective pipelines to transport natural gas from northern basins. This session also presented pipeline routes that transport diluted bitumens from the Athabasca Oil Sands Project and the Muskeg River Mine to upgrader facilities in Alberta. Construction issues included design conservatism, water course crossings, winter construction, winter ditching, and public consultation. Examples of high strength steel pipe applications were also included with reference to experience gained by TransCanada and Corridor Pipeline. tabs., figs.

  17. Serviced Living

    Institute of Scientific and Technical Information of China (English)

    LIU BO

    2006-01-01

    @@ As recently as ten years ago,the term serviced apartment made no sense to most people living in Beijing and residing in hotels was the only options for foreign visitors. But since then, serviced apartments have begun to appear in big cities all around China. In Beijing alone, it is estimated that there are more than 30,000service apartments spread across dozens of properties occupying a space of more than I million square meters. Concentrating in the Financial Street, the Central Business District and Zhongguancun, also known as China's Silicon Valley, the explosion in service apartments in the city continues to be fueled by the influx of overseas and domestic business people.

  18. Live CMS

    CERN Document Server

    2017-01-01

    CMS live from Facebook. The Pixel Tracker (or Pixel Detector) is the innermost instrument in the very heart of the CMS apparatus, installed around the LHC beampipe. This is the very point where new particles, such as the Higgs boson, are produced by the energy of the proton proton collisions, and so the Pixel detector receives the largest particle-flux of any sub-component of CMS. The new component is made up of two “parts”: a central barrel region (called BPIX), made of two cylindrical halves, and forward discs on either side of the collision point (FPIX). The new BPIX was manufactured by a consortium of European institutes from Switzerland, Italy and Germany, supported by CERN. The new FPIX was manufactured by 14 institutes in the USA.

  19. Supporting Product Line Evolution with Framed Aspects

    DEFF Research Database (Denmark)

    Loughran, Neil; Rashid, Awais; Zhang, Weishan

    2004-01-01

    This paper discusses how evolution in software product lines can be supported using framed aspects: a combination of aspect-oriented programming and frame technology. Product line architectures and assets are subject to maintenance and evolution throughout their lifetime due to the emergence of n...

  20. Research on Selection of Equipment Maintenance Modes

    Institute of Scientific and Technical Information of China (English)

    SHANG Wen-li; SHI Hai-bo; HE Bai-tao

    2006-01-01

    The development of equipment maintenance management is introduced, and equipment maintenance concept is defined. Equipment maintenance modes are classified, analyzed and compared, which merits and demerits are pointed out. At last, a decision-making frame to select equipment maintenance modes is advanced, and steps to select and implement equipment maintenance are given.

  1. 75 FR 17913 - Maintenance and Vegetation Management Along Existing Western Area Power Administration...

    Science.gov (United States)

    2010-04-08

    ... Area Power Administration DEPARTMENT OF AGRICULTURE Forest Service Maintenance and Vegetation Management Along Existing Western Area Power Administration Transmission Line Rights of Way on National... Administration, DOE; Forest Service, USDA. ACTION: Notice of Intent to Prepare an Environmental Impact...

  2. Maintenance of family networks

    DEFF Research Database (Denmark)

    marsico, giuseppina; Chaudhary, N; Valsiner, Jaan

    2015-01-01

    Families are social units that expand in time (across generations) and space (as a geographically distributed sub-structures of wider kinship networks). Understanding of intergenerational family relations thus requires conceptualization of communication processes that take place within a small...... collective of persons linked with one another by a flexible social network. Within such networks, Peripheral Communication Patterns set the stage for direct everyday life activities within the family context. Peripheral Communication Patterns are conditions where one family network member (A) communicates...... manifestly with another member (B) with the aim of bringing the communicative message to the third member (C) who is present but is not explicitly designated as the manifest addressee of the intended message. Inclusion of physically non-present members of the family network (elders living elsewhere, deceased...

  3. 49 CFR 192.9 - What requirements apply to gathering lines?

    Science.gov (United States)

    2010-10-01

    ... gathering line must comply with requirements of this part applicable to transmission lines, except the... onshore gathering line must comply with the requirements of this part applicable to transmission lines... maintenance tasks. (d) Type B lines. An operator of a Type B regulated onshore gathering line must comply...

  4. 49 CFR 234.243 - Wire on pole line and aerial cable.

    Science.gov (United States)

    2010-10-01

    ... Maintenance, Inspection, and Testing Maintenance Standards § 234.243 Wire on pole line and aerial cable. Wire... transmission line operating at voltage of 750 volts or more shall be placed not less than 4 feet above the... 49 Transportation 4 2010-10-01 2010-10-01 false Wire on pole line and aerial cable....

  5. Measure Lines

    Science.gov (United States)

    Crissman, Sally

    2011-01-01

    One tool for enhancing students' work with data in the science classroom is the measure line. As a coteacher and curriculum developer for The Inquiry Project, the author has seen how measure lines--a number line in which the numbers refer to units of measure--help students not only represent data but also analyze it in ways that generate…

  6. On Problems of Multicomponent System Maintenance Modelling

    Institute of Scientific and Technical Information of China (English)

    Tomasz Nowakowski; Sylwia Werbinka

    2009-01-01

    We present an overview of some recent developments in the area of mathematical modeling of maintenance decisions for multi-unit systems. The emphasis is on three main groups of multicomponent maintenance optimization models: the block replacement models, group maintenance models, and opportunistic maintenance models. Moreover, an example of a two-unit system maintenance process is provided in order to compare various maintenance policies.

  7. Neonatal Bacteraemia Among 112,360 Live Births

    LENUS (Irish Health Repository)

    Huggard, D

    2016-10-01

    Our aims were to determine the incidence of bacteraemia in a cohort of neonatal patients over a 14 year period, to describe the organisms involved, and to establish the rates of sepsis with regard to both early onset sepsis (EOS) and late onset sepsis (LOS). Lastly, we investigated the trends of neonatal sepsis, to determine whether changes in clinical practice influenced the rate of blood culture positivity. With regards to EOS, GBS was the predominant pathogen, followed by E.coli, CoNS, and S. aureus . The overall mean EO rate per 1000 live births (LBs) was 1.19. Looking at LOS, S. aureus , CoNS , Enterococcus spp. were the most common bacteria cultured. The mean LOS rate was 1.88 per 1000 live births. The overall rate of EOS remained fairly steady. GBS remains the major pathogen in EOS; however its incidence has remained largely unchanged over time in relation to both EOS and LOS. Conversely the rate of LOS peaked from ’05-’09, mainly due to an increase in Staphylococcus aureus , CoNS and Enterococcus spp. cases, and then improved dramatically in the following years. This was likely due to a change in hospital policies in relation to hand hygiene and intravenous line placement and maintenance.

  8. Airline Maintenance Manpower Optimization from the De Novo Perspective

    Science.gov (United States)

    Liou, James J. H.; Tzeng, Gwo-Hshiung

    Human resource management (HRM) is an important issue for today’s competitive airline marketing. In this paper, we discuss a multi-objective model designed from the De Novo perspective to help airlines optimize their maintenance manpower portfolio. The effectiveness of the model and solution algorithm is demonstrated in an empirical study of the optimization of the human resources needed for airline line maintenance. Both De Novo and traditional multiple objective programming (MOP) methods are analyzed. A comparison of the results with those of traditional MOP indicates that the proposed model and solution algorithm does provide better performance and an improved human resource portfolio.

  9. Chromatin replication and epigenome maintenance

    DEFF Research Database (Denmark)

    Alabert, Constance; Groth, Anja

    2012-01-01

    initiates, whereas the replication process itself disrupts chromatin and challenges established patterns of genome regulation. Specialized replication-coupled mechanisms assemble new DNA into chromatin, but epigenome maintenance is a continuous process taking place throughout the cell cycle. If DNA...

  10. Chromatin replication and epigenome maintenance

    DEFF Research Database (Denmark)

    Alabert, Constance; Groth, Anja

    2012-01-01

    initiates, whereas the replication process itself disrupts chromatin and challenges established patterns of genome regulation. Specialized replication-coupled mechanisms assemble new DNA into chromatin, but epigenome maintenance is a continuous process taking place throughout the cell cycle. If DNA...

  11. Quality standard of aircraft maintenance

    Directory of Open Access Journals (Sweden)

    Боузаієнне Меккі бен Салем

    2005-01-01

    Full Text Available  The question of the account of operation conditions of an aeronautical engineering in airlines is considered at formation and a correcting of plans on aircrafts park maintenance.

  12. Avionics Maintenance Technology Program Standards.

    Science.gov (United States)

    Georgia Univ., Athens. Dept. of Vocational Education.

    This publication contains statewide standards for the avionics maintenance technology program in Georgia. The standards are divided into the following categories: foundations, diploma/degree (philosophy, purpose, goals, program objectives, availability, evaluation); admissions, diploma/degree (admission requirements, provisional admission…

  13. 33 CFR 127.401 - Maintenance: General.

    Science.gov (United States)

    2010-07-01

    ...) WATERFRONT FACILITIES WATERFRONT FACILITIES HANDLING LIQUEFIED NATURAL GAS AND LIQUEFIED HAZARDOUS GAS Waterfront Facilities Handling Liquefied Natural Gas Maintenance § 127.401 Maintenance: General. The...

  14. zebraflash transgenic lines for in vivo bioluminescence imaging of stem cells and regeneration in adult zebrafish.

    Science.gov (United States)

    Chen, Chen-Hui; Durand, Ellen; Wang, Jinhu; Zon, Leonard I; Poss, Kenneth D

    2013-12-01

    The zebrafish has become a standard model system for stem cell and tissue regeneration research, based on powerful genetics, high tissue regenerative capacity and low maintenance costs. Yet, these studies can be challenged by current limitations of tissue visualization techniques in adult animals. Here we describe new imaging methodology and present several ubiquitous and tissue-specific luciferase-based transgenic lines, which we have termed zebraflash, that facilitate the assessment of regeneration and engraftment in freely moving adult zebrafish. We show that luciferase-based live imaging reliably estimates muscle quantity in an internal organ, the heart, and can longitudinally follow cardiac regeneration in individual animals after major injury. Furthermore, luciferase-based detection enables visualization and quantification of engraftment in live recipients of transplanted hematopoietic stem cell progeny, with advantages in sensitivity and gross spatial resolution over fluorescence detection. Our findings present a versatile resource for monitoring and dissecting vertebrate stem cell and regeneration biology.

  15. Lupus flares in two established end-stage renal disease patients with on-line hemodiafiltration during pregnancy - case series.

    Science.gov (United States)

    Althaf, M M; Abdelsalam, M S; Alfurayh, O I

    2014-08-01

    Many patients with established end-stage renal disease on maintenance dialysis as a result of lupus nephritis are young females in their reproductive years. We report two such patients dialyzed with on-line hemodiafiltration who developed reactivation of lupus disease activity only when they conceived after initial systemic lupus erythematosus burnout. We believe that the flare was triggered by both efficient dialysis and hormonal changes during pregnancy. The flares were treated with oral corticosteroids with an excellent response. Both patients had live births but delivered preterm.

  16. Functional Status of Patients on Maintenance Hemodialysis

    Directory of Open Access Journals (Sweden)

    Akash Nabil

    1999-01-01

    Full Text Available Factors associated with physical well being were examined in adults with end-stage renal disease (ESRD in two large hemodialysis units of the Royal Medical Services in Jordan. Utilizing the Karnofski scale we measured the functional status of 200 Patients who had been on maintenance hemodialysis for at least 12 months. A Marnofski scale of less than 70 incidents frank disability (Inability to perform routine living activities without assistance, in addition current vocational status was assessed as well as any existing comorbid conditions. The mean age of the study group was 45.2 years (range 16 to 70 and included 108 (54% males and 92 (46% females, there were 39 (19.5% diabetic patients and 27 (13.5% patients were receiving erythropoietin (EPO. The mean hematocrit of the entire group was 27.8%. As measured by Karnofski scale, 64 (32% of the patients were unable to perform routine living activity without assistance; dependence on wheelchair was reported by 9 (4.5% patients. The mean comorbidity index of patients who scored less than 70 on the Karnofski scale was 1.5 compared to 0.7 for those who scored at least 70 on the same scale (p< 0.001. Analysis of factors showed that age and diabetes mellitus affected functional status. Of the laboratory variables measured, only serum albumin concentration correlated significant with Karnofski scale. Fourteen (21.8% of the patients who scored below 70, had serum albumin concentration above 40g/L compared to 66 (48.5% of the patients who scored at least 70 on the Karnofski scale (p< 0.001. We conclude that a significant proportion of patients on maintenance hemodialysis is functionally disabled. The elderly, diabetics, patients with high co-morbidity index and those with low serum albumin are most likely to have poor functional status.

  17. 基于ZigBee的高压带电体温度在线监测系统%ZigBee-based temperature monitoring on-line system of high-voltage live parts

    Institute of Scientific and Technical Information of China (English)

    滕志军; 屈银龙; 王中宝; 杨旭

    2011-01-01

    在现代电力系统中,高压带电体温度监测已经成为电气设备安全运行所面临的实际问题.本文提出了以zigBee无线传感器网络为核心,以以太网为骨干网,采用CC2430芯片为传感器控制核心的高压带电体温度测量方案.试验证明,系统能够实时监测高压带电体温度变化,工作稳定可靠、具有较高的实用性和市场价值.%In modern power system, the temperature monitoring of high-voltage live parts has become one of practical problems in the safe operation of electrical equipment. This paper proposes a high-voltage live parts temperature measurement that includes ZigBee wireless sensor networks as the core, Ethernet as the backbone and CC2430 chip as the sensor control core. ZigBee network of the system runs on 2.4GHz free frequency band. When tree topology is used to build system network, the maximum root depth is 5. The network can monitor the high-voltage live parts within 150m radius circular area in real time. The system network is scalable and can support up to 65,535 nodes. The system temperature monitoring range is -55℃ ~ + 125℃ with 14 bits resolution. When the range of monitoring temperature is - 10℃ ~ + 85℃, accuracy can be achieved within ± 0. 5℃. Through the experiment, the realtime temperature monitoring system of high-voltage live parts not only is stable and reliable but also has high availability and market value.

  18. Living Nanomachines

    Science.gov (United States)

    Carlier, M.-F.; Helfer, E.; Wade, R.; Haraux, F.

    The living cell is a kind of factory on the microscopic scale, in which an assembly of modular machines carries out, in a spatially and temporally coordinated way, a whole range of activities internal to the cell, including the synthesis of substances essential to its survival, intracellular traffic, waste disposal, and cell division, but also activities related to intercellular communication and exchanges with the outside world, i.e., the ability of the cell to change shape, to move within a tissue, or to organise its own defence against attack by pathogens, injury, and so on. These nanomachines are made up of macromolecular assemblies with varying degrees of complexity, forged by evolution, within which work is done as a result of changes in interactions between proteins, or between proteins and nucleic acids, or between proteins and membrane components. All these cell components measure a few nanometers across, so the mechanical activity of these nanomachines all happens on the nanometric scale. The directional nature of the work carried out by biological nanomachines is associated with a dissipation of energy. As examples of protein assemblies, one could mention the proteasome, which is responsible for the degradation of proteins, and linear molecular motors such as actomyosin, responsible for muscle contraction, the dynein-microtubule system, responsible for flagellar motility, and the kinesin-microtubule system, responsible for transport of vesicles, which transform chemical energy into motion. Nucleic acid-protein assemblies include the ribosome, responsible for synthesising proteins, polymerases, helicases, elongation factors, and the machinery of DNA replication and repair; the mitotic spindle is an integrated system involving several of these activities which drive chromosome segregation. The machinery coupling membranes and proteins includes systems involved in the energy metabolism, such as the ATP synthase rotary motor, signalling cascades, endocytosis

  19. The Kiosk Gets Friendlier: Weary travelers hate waiting in line, so Hertz adopted new kiosk technology that allows customers to interact with a live, remote agent to complete their transactions

    National Research Council Canada - National Science Library

    Stacy Collett

    2012-01-01

      Weary travelers don't like waiting in line to rent a car. In 2011, Hertz became the first car rental agency to let customers at airports and neighborhood locations rent cars through a video kiosk featuring face-to-face chat. The project...

  20. Simulation analysis of body surface electromagnetic field in live overhaul of 110 kV/220 kV four-parallel lines on same tower%110 kV/220 kV 同塔混压四回输电线路带电作业中人体体表场强仿真分析

    Institute of Scientific and Technical Information of China (English)

    刘夏清; 邹德华; 李稳; 牛捷; 李辉; 童诚

    2015-01-01

    Under live overhaul of transmission line,the electric field around the operator and field intensity on body surface are changing at all times.The accumulative charge on body surface will stimulate human body,causing security incidents.By utilizing the finite element method,electric field on body surface in the live overhaul of four-parallel lines on the same tower was calculated in this paper.The electric field distribution influences for each part of human body caused by various operation points and one loop line outage were investigated.The calculation results show that the surface field intensity close to the wire side is maximum under live working,and power outages is obviously affect electric field around foot.The simulation results provide important theoretical guidance to safeguard of live overhaul and improvements on the way of live overhaul.%线路带电检修作业时,作业人员周围电场及人体表面场强不断变化,在皮肤表面积聚的电荷对人体产生刺激,可能会引发安全事故。利用有限元法,对同塔四回输电线路带电作业时人体体表电场强度进行计算,研究不同作业点和一回线路停电对人体各部位电场分布的影响,计算结果表明:带电作业时的人体靠近导线侧体表的电场强度最大,停电对作业人员脚部场强影响最明显。研究结果对带电作业下采取有效的防护措施以及带电作业方式的改进具有重要的理论指导意义。

  1. Maintenance and ramp line operations safety assessment (M&R LOSA: using a tested approach for risk management and safety enhancement = Avaliação de segurança nas operações de linha em serviços de rampa e de manutenção (M&R LOSA: utilizando uma abordagem testada para gerenciamento de riscos e aumento da segurança

    Directory of Open Access Journals (Sweden)

    Ma, Jiao

    2012-01-01

    Full Text Available The aviation industry is maturing in its preference for proactive intervention over post-accident remediation in potentially hazardous circumstances. Line Operations Safety Audits (LOSA adopts a truly proactive and predictive strategy to address aviation safety. As a voluntary safety program, LOSA collects safety data during normal airline operations through peer observations in strict non-jeopardy conditions. Sponsored by the Federal Aviation Administration (FAA, an M&R LOSA project was launched in October 2008 to capitalize on the successes of flight deck LOSA and extend it to aviation maintenance and ramp operations. The project delivered an array of open source tools, including observation data collection forms, procedures, program manuals, scenario-based training, and databases. The M&R LOSA programs are expected to positively leverage peer pressure to enforce behavior change and allow subunits of an organization to build in some flexibility to address their key problems and assure the effectiveness of safety recommendations

  2. Maintenance of DNA methylation: Dnmt3b joins the dance.

    Science.gov (United States)

    Walton, Emma L; Francastel, Claire; Velasco, Guillaume

    2011-11-01

    DNA methylation mostly occurs within the context of CpG dinucleotides and is essential for embryonic development and gene repression. It is generally accepted that DNA methyltransferases carry out specific and non-overlapping functions, Dnmt3a and Dnmt3b being responsible for the establishment of methylation around the time of implantation and Dnmt1 ensuring that methylation is faithfully copied to daughter cells via what has come to be known as "maintenance methylation." This longstanding view has been challenged over the years with the observation that Dnmt1 alone is incapable of perfect maintenance methylation. A new model is emerging that takes into account a contribution of the de novo enzymes Dnmt3a and Dnmt3b in the maintenance of the DNA methylation. We recently showed that certain germ line genes are specific targets of Dnmt3b, and that Dnmt3b remains bound to their promoter regions in somatic cells via interaction with the transcriptional repressor E2F6. It is tempting to consider an ongoing role for Dnmt3b in the methylation of germ line genes in somatic cells. We propose here observations in support of the hypothesis that the maintenance of methylation and subsequent silencing of a handful of germ line genes requires Dnmt3b but not Dnmt1. In addition to suggesting a new role for Dnmt3b in the protection of somatic cells against the promiscuous expression of the germ line program, these observations are of particular interest in the field of carcinogenesis, given that the expression of catalytically inactive Dnmt3b isoforms and aberrant expression of germ line genes are commonly observed in cancer cells.

  3. Rotating Machinery Predictive Maintenance Through Expert System

    Directory of Open Access Journals (Sweden)

    M. Sarath Kumar

    2000-01-01

    Full Text Available Modern rotating machines such as turbomachines, either produce or absorb huge amount of power. Some of the common applications are: steam turbine-generator and gas turbine-compressor-generator trains produce power and machines, such as pumps, centrifugal compressors, motors, generators, machine tool spindles, etc., are being used in industrial applications. Condition-based maintenance of rotating machinery is a common practice where the machine's condition is monitored constantly, so that timely maintenance can be done. Since modern machines are complex and the amount of data to be interpreted is huge, we need precise and fast methods in order to arrive at the best recommendations to prevent catastrophic failure and to prolong the life of the equipment. In the present work using vibration characteristics of a rotor-bearing system, the condition of a rotating machinery (electrical rotor is predicted using an off-line expert system. The analysis of the problem is carried out in an Object Oriented Programming (OOP framework using the finite element method. The expert system which is also developed in an OOP paradigm gives the type of the malfunctions, suggestions and recommendations. The system is implemented in C++.

  4. Análise da confiabilidade humana via redes Bayesianas: uma aplicação à manuten��ão de linhas de transmissão Human analysis through Bayesian networks: an application in maintenance of transmission lines

    Directory of Open Access Journals (Sweden)

    Regilda da Costa Silva Menêzes

    2007-04-01

    Full Text Available A análise de confiabilidade humana (ACH estuda a execução das ações humanas em um determinado sistema, considerando suas limitações e os fatores que influenciam no seu desempenho. A literatura apresenta os modelos de ACH de primeira e segunda geração. Esses modelos apresentam algumas deficiências. Dentre elas, destacam-se suposições irreais de independência e simples representação binária de eventos. Diante disso, apresentam uma grande dificuldade na modelagem das ações humanas. Este artigo mostra que modelar ações humanas por redes Bayesianas (RBs proporciona uma maior flexibilidade às variáveis componentes de um determinado sistema, pois além de permitir uma representação mais realista da natureza dinâmica da interface homem-sistema, também representa a relação de dependência entre eventos e entre fatores de desempenho. Neste artigo, utilizam-se RBs para ACH em atividades de manutenção de linhas de transmissão.Human Reliability Analysis (HRA has been used to study the execution of human actions and their interactions with a system, taking into account its limitations and factors influencing the human performance. The HRA methods can be categorized into the first and second generation models. These models present some shortcomings such as unrealistic independence assumptions and simple binary representation of events. Therefore, they present a significant deficiency in modeling human actions. In this paper it is described a methodology for modeling human actions through Bayesian belief networks (BBN. The methodology provides a greater flexibility as not it only allows for a more realistic representation of the dynamic nature of man-system, but also allows for representation of the relationship of dependence among the events and performance shaping factors. This methodology is demonstrated in the context of human reliability in activities of maintenance of transmission line.

  5. 23 CFR 633.208 - Maintenance.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Maintenance. 633.208 Section 633.208 Highways FEDERAL... PROVISIONS Federal-Aid Contracts (Appalachian Contracts) § 633.208 Maintenance. Maintenance of all highway... responsibility of the State. The State may arrange for maintenance of such roads or portions thereof,...

  6. 18 CFR 367.81 - Maintenance.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Maintenance. 367.81... Expense Instructions § 367.81 Maintenance. (a) The cost of maintenance chargeable to the various operating... maintenance work. A list of work operations applicable generally to service company property is included...

  7. 46 CFR 185.702 - Maintenance.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Maintenance. 185.702 Section 185.702 Shipping COAST...) OPERATIONS Operational Readiness, Maintenance, and Inspection of Lifesaving Equipment § 185.702 Maintenance. (a) The manufacturer's instructions for onboard maintenance of survival craft, rescue boats,...

  8. 46 CFR 122.702 - Maintenance.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Maintenance. 122.702 Section 122.702 Shipping COAST..., Maintenance, and Inspection of Lifesaving Equipment § 122.702 Maintenance. (a) The manufacturer's instructions for onboard maintenance of survival craft, rescue boats, and launching appliances, manufactured on...

  9. Selective Maintenance Model Considering Time Uncertainty

    OpenAIRE

    Le Chen; Zhengping Shu; Yuan Li; Xuezhi Lv

    2012-01-01

    This study proposes a selective maintenance model for weapon system during mission interval. First, it gives relevant definitions and operational process of material support system. Then, it introduces current research on selective maintenance modeling. Finally, it establishes numerical model for selecting corrective and preventive maintenance tasks, considering time uncertainty brought by unpredictability of maintenance procedure, indetermination of downtime for spares and difference of skil...

  10. Design Support for Maintenance Tasks using TRIZ

    NARCIS (Netherlands)

    Vaneker, Thomas H.J.; van Diepen, T.

    2016-01-01

    Design for Maintenance is a method to optimize maintenance activities during the design process. To help maintenance engineers, the chair Maintenance Engineering at the University of Twente has set up a list of 37 guidelines. However, these guidelines only state the goal that should be achieved, but

  11. Lifetime oriented maintenance planning in the Netherlands

    NARCIS (Netherlands)

    Straub, A.

    2003-01-01

    In this paper we set up a framework for lifetime oriented maintenance planning as an outcome and input for strategic housing stock management. The maintenance planning holds maintenance activities and costs in the longer term. We consider the maintenance planning as a tool to calculate and implement

  12. Maintenance therapy in multiple myeloma

    Directory of Open Access Journals (Sweden)

    Jean-Luc Harousseau

    2009-08-01

    Full Text Available The treatment of multiple myeloma (MM has changed dramatically in the past twenty years with the introduction of high-dose therapy plus autologous stem-cell transplantation (ASCT in younger patients and, more recently, of three novel agents (thalidomide, bortezomib, and lenalidomide. When conventional chemotherapy was the only available possibility, complete responses (CR were very rare and the objective of maintenance was to prolong remission duration by continuing the same type of treatment that induced the initial response. With recent therapeutic improvements, CR achievement becomes a realistic goal that, in most cases, is significantly correlated with the outcome (1. Therefore, both the nature and the impact of maintenance therapy have changed. Maintenance therapy is based currently on novel agents, and its objective is not only to control the clone but also to further decrease the tumor burden and improve the quality of response. A number of randomized studies show a benefit from maintenance therapy with novel agents (until now, mostly thalidomide, at least in terms of response rate and progression-free survival (PFS. However, there is still a debate as concerns the impact on overall survival (OS and the optimal administration of maintenance therapy.

  13. An automated neutron monitor maintenance system

    Energy Technology Data Exchange (ETDEWEB)

    Moore, F.S.; Griffin, J.C.; Odell, D.M.C.

    1996-09-01

    Neutron detectors are commonly used by the nuclear materials processing industry to monitor fissile materials in process vessels and tanks. The proper functioning of these neutron monitors must be periodically evaluated. We have developed and placed in routine use a PC-based multichannel analyzer (MCA) system for on-line BF3 and He-3 gas-filled detector function testing. The automated system: 1) acquires spectral data from the monitor system, 2) analyzes the spectrum to determine the detector`s functionality, 3) makes suggestions for maintenance or repair, as required, and 4) saves the spectrum and results to disk for review. The operator interface has been designed to be user-friendly and to minimize the training requirements of the user. The system may also be easily customized for various applications

  14. Heidegger, lived experience and method.

    Science.gov (United States)

    Paley, John

    2014-07-01

    A discussion of the assumption that Heidegger's philosophy in Being And Time provides a warrant for the study of lived experience. It is generally assumed, in nursing as in other disciplines, that Heidegger's philosophy points, uncontroversially, to the study of lived experience. It is also assumed that studies of this type will take the form of qualitative interviews which seek to explore the respondent's experience of a particular phenomenon and to elicit the meanings which the individual concerned attaches to that experience. Being And Time; the philosophical literature on Heidegger since 1999; the literature of experimental social psychology, 1970-2012. According to Heidegger, there is no such thing as 'lived experience'. The concept is embedded in the subject-object dualism that he is attempting to dismantle. In Heideggerian terms, interviews intended to explore 'lived experience' can only reproduce the voice of das Man, the 'They', not the voice of unique individuals. Methods more in keeping with Heidegger's philosophy include observation, naturalistic experiments, some forms of discourse analysis and conceptually associated lines of enquiry involving vocabularies of motive, scripts and the performative aspects of language use. Nursing researchers who wish to embrace Heidegger's philosophy as a basis for their work should abandon 'lived experience' interviews and adopt one of the alternative methods suggested above. Nursing researchers who wish to continue with 'lived experience' interviews should seek an alternative philosophical or theoretical basis for their work. © 2013 John Wiley & Sons Ltd.

  15. 49 CFR 192.719 - Transmission lines: Testing of repairs.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Transmission lines: Testing of repairs. 192.719... TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Maintenance § 192.719 Transmission lines: Testing of repairs. (a) Testing of replacement pipe. If a segment of transmission line...

  16. Stochastic models in reliability and maintenance

    CERN Document Server

    2002-01-01

    Our daily lives can be maintained by the high-technology systems. Computer systems are typical examples of such systems. We can enjoy our modern lives by using many computer systems. Much more importantly, we have to maintain such systems without failure, but cannot predict when such systems will fail and how to fix such systems without delay. A stochastic process is a set of outcomes of a random experiment indexed by time, and is one of the key tools needed to analyze the future behavior quantitatively. Reliability and maintainability technologies are of great interest and importance to the maintenance of such systems. Many mathematical models have been and will be proposed to describe reliability and maintainability systems by using the stochastic processes. The theme of this book is "Stochastic Models in Reliability and Main­ tainability. " This book consists of 12 chapters on the theme above from the different viewpoints of stochastic modeling. Chapter 1 is devoted to "Renewal Processes," under which cla...

  17. A STEPPING STONE TOWARDS KNOWLEDGE BASED MAINTENANCE

    Directory of Open Access Journals (Sweden)

    G. Waeyenbergh

    2012-01-01

    Full Text Available Maintenance decision making becomes more and more a management concern. Some decades ago, maintenance was still often considered as an unavoidable side effect of production. The perception of maintenance has evolved considerably. One of the current issues is the maintenance concept, being the mix of maintenance interventions and the general framework for determining this mix. In this paper we describe a modular framework, called Knowledge Based Maintenance, for developing a customised maintenance concept. After describing the general framework and its decision support use, some case experiences are given. This experience covers some elements of the proposed framework.

  18. Sensitivities in Structural Maintenance Planning

    DEFF Research Database (Denmark)

    Faber, Michael Havbro; Kroon, I.B.; Sørensen, John Dalsgaard

    1996-01-01

    A general description of optimal inspection and maintenance planning based on the classical decision theory and the modern reliability theory is given. A number of simplifications to this description is given leading to more appropriate formulations for practical applications. Sensitivities of both...... optimal inspection and maintenance plans as well as the associated costs are given with respect to the assumptions on which the planning has been performed. These sensitivities indicate the significance of the individual assumptions and may be used as a decision tool to reject particular optimal...... inspection and maintenance plans showing too large sensitivity. An example from the offshore industry is given to indicate how the methodologies can be used in practical applications....

  19. Sensitivities in Structural Maintenance Planning

    DEFF Research Database (Denmark)

    Faber, Michael Havbro; Kroon, I.B.; Sørensen, John Dalsgaard

    1996-01-01

    A general description of optimal inspection and maintenance planning based on the classical decision theory and the modern reliability theory is given. A number of simplifications to this description is given leading to more appropriate formulations for practical applications. Sensitivities of both...... optimal inspection and maintenance plans as well as the associated costs are given with respect to the assumptions on which the planning has been performed. These sensitivities indicate the significance of the individual assumptions and may be used as a decision tool to reject particular optimal...... inspection and maintenance plans showing too large sensitivity. An example from the offshore industry is given to indicate how the methodologies can be used in practical applications....

  20. Diverless maintenance in deep water

    Energy Technology Data Exchange (ETDEWEB)

    Hals, B.E. [Oceaneering International Services, (United Kingdom)

    1996-12-31

    The topic of diverless maintenance will address subsea production facilities in this paper. The major factors that determine diverless maintainability are development economics, maintenance philosophy, subsea hardware design, subsea intervention hardware, and compatibility of subsea hardware and remote work capabilities. The opportunity for developing and implementing low cost diverless installable and maintenable subsea facilities exist. Designs, hardwares, and procedures exist althoughmany of these have been combined into powerful solutions. This paper addresses the issues that need to be considered and provides one set of solutions. There are a number of other solutions that can be combined in a different set to provide a parallel but different solution. The challenge is to establish a process that defines the requirement, identifies the resources/capabilities, executes the work. 3 refs., 10 figs.

  1. Total Productive Maintenance at Paccar INC

    OpenAIRE

    2010-01-01

    This paper reports the application of total productive maintenance method at Paccar Inc. truck’s plant in Victoria, Australia. The total productive maintenance method and total productive maintenance house are presented. The global equipment effectiveness is computed and exemplified. The production structure and organising maintenance are presented. Resultas of the variation of global equipment effectiveness and autonomous maintenance in a two weeks period of time are reported.

  2. Total Productive Maintenance at Paccar INC

    Directory of Open Access Journals (Sweden)

    Ştefan Farkas

    2010-06-01

    Full Text Available This paper reports the application of total productive maintenance method at Paccar Inc. truck’s plant in Victoria, Australia. The total productive maintenance method and total productive maintenance house are presented. The global equipment effectiveness is computed and exemplified. The production structure and organising maintenance are presented. Resultas of the variation of global equipment effectiveness and autonomous maintenance in a two weeks period of time are reported.

  3. Developing a comprehensive training curriculum for integrated predictive maintenance

    Science.gov (United States)

    Wurzbach, Richard N.

    2002-03-01

    On-line equipment condition monitoring is a critical component of the world-class production and safety histories of many successful nuclear plant operators. From addressing availability and operability concerns of nuclear safety-related equipment to increasing profitability through support system reliability and reduced maintenance costs, Predictive Maintenance programs have increasingly become a vital contribution to the maintenance and operation decisions of nuclear facilities. In recent years, significant advancements have been made in the quality and portability of many of the instruments being used, and software improvements have been made as well. However, the single most influential component of the success of these programs is the impact of a trained and experienced team of personnel putting this technology to work. Changes in the nature of the power generation industry brought on by competition, mergers, and acquisitions, has taken the historically stable personnel environment of power generation and created a very dynamic situation. As a result, many facilities have seen a significant turnover in personnel in key positions, including predictive maintenance personnel. It has become the challenge for many nuclear operators to maintain the consistent contribution of quality data and information from predictive maintenance that has become important in the overall equipment decision process. These challenges can be met through the implementation of quality training to predictive maintenance personnel and regular updating and re-certification of key technology holders. The use of data management tools and services aid in the sharing of information across sites within an operating company, and with experts who can contribute value-added data management and analysis. The overall effectiveness of predictive maintenance programs can be improved through the incorporation of newly developed comprehensive technology training courses. These courses address the use of

  4. Optimal interval for major maintenance actions in electricity distribution networks

    Energy Technology Data Exchange (ETDEWEB)

    Louit, Darko; Pascual, Rodrigo [Centro de Mineria, Pontificia Universidad Catolica de Chile, Av. Vicuna MacKenna, 4860 Santiago (Chile); Banjevic, Dragan [Centre for Maintenance Optimization and Reliability Engineering, University of Toronto, 5 King' s College Rd., Toronto, Ontario (Canada)

    2009-09-15

    Many systems require the periodic undertaking of major (preventive) maintenance actions (MMAs) such as overhauls in mechanical equipment, reconditioning of train lines, resurfacing of roads, etc. In the long term, these actions contribute to achieving a lower rate of occurrence of failures, though in many cases they increase the intensity of the failure process shortly after performed, resulting in a non-monotonic trend for failure intensity. Also, in the special case of distributed assets such as communications and energy networks, pipelines, etc., it is likely that the maintenance action takes place sequentially over an extended period of time, implying that different sections of the network underwent the MMAs at different periods. This forces the development of a model based on a relative time scale (i.e. time since last major maintenance event) and the combination of data from different sections of a grid, under a normalization scheme. Additionally, extended maintenance times and sequential execution of the MMAs make it difficult to identify failures occurring before and after the preventive maintenance action. This results in the loss of important information for the characterization of the failure process. A simple model is introduced to determine the optimal MMA interval considering such restrictions. Furthermore, a case study illustrates the optimal tree trimming interval around an electricity distribution network. (author)

  5. Living Expert System (LEXSYS). Volume 7

    Science.gov (United States)

    1989-05-15

    Partial contents: Army: LEXSYS--What Its All About; Summary of Team Meeting; How Can We Build a Non-Maintenance Intensive Expert Data Base; Cost Data for LEXSYS Prototype Issues; Search for the Perfect Rolodex; Reaching Decision Points in LEXSYS Subnets; An Architecture for a Prototype Net?; Helicopter FLOT Operations; Battlestaff Integration; Hardware Availability. Keywords: Dialogue; Conversation; LEXSYS (Living Expert System ); Decision making; Decision aids.

  6. Fault maintenance trees: reliability centered maintenance via statistical model checking

    NARCIS (Netherlands)

    Ruijters, Enno; Guck, Dennis; Drolenga, Peter; Stoelinga, Mariëlle

    2016-01-01

    The current trend in infrastructural asset management is towards risk-based (a.k.a. reliability centered) maintenance, promising better performance at lower cost. By maintaining crucial components more intensively than less important ones, dependability increases while costs decrease. This requires

  7. Fault maintenance trees: reliability centered maintenance via statistical model checking

    NARCIS (Netherlands)

    Ruijters, Enno Jozef Johannes; Guck, Dennis; Drolenga, Peter; Stoelinga, Mariëlle Ida Antoinette

    The current trend in infrastructural asset management is towards risk-based (a.k.a. reliability centered) maintenance, promising better performance at lower cost. By maintaining crucial components more intensively than less important ones, dependability increases while costs decrease. This requires

  8. Maintenance as a corporate strategy.

    Science.gov (United States)

    Clarke, D

    2000-11-01

    As we move towards the 21st century, those Manufacturing Industries that survive, will have changed their "efficiency" focus away from the conventional wisdom of "efficient individual tasks", to focus on the "effectiveness of a total manufacturing process". This seemingly insignificant change of emphasis, (from task to process) must include "the integration of process plant maintenance into the production process". Manufacturing companies, which do not include an effective plant maintenance strategy into their business strategy, will not survive the business environment of the 21st Century.

  9. PRIORITY DISPATCH SCHEDULING IN AN AUTOMOBILE REPAIR AND MAINTENANCE WORKSHOP

    Directory of Open Access Journals (Sweden)

    KOYEJO OYEBOLA T.

    2011-10-01

    Full Text Available This research work applied a simulation model in determining the optimal number of artisans to employ to carry out routine checks on vehicles on a waiting line. The waiting line under consideration is that of an automobile repair and maintenance workshop in South- Western Nigeria. The data collection was based on arrival pattern of vehicles and service pattern of artisans in the maintenance workshop. A discrete distribution was assumed for both the inter–arrival and service time patterns. An optimal number of 7 servers serving one queue were obtained as against 4 servers and 1 queue in the system in use. There was also a savings in cost of N2.45 Million per month when compared to the system in use. The results of this research work will be significant and important for decision making.

  10. Clinical observation of maintenance therapy with gefitinib after the first-line chemotherapy for patients with advanced non-small-cell lung cancer%一线化疗后吉非替尼维持治疗晚期非小细胞肺癌的临床观察

    Institute of Scientific and Technical Information of China (English)

    姜海英; 谢晓东; 朱梅

    2011-01-01

    Objective To evaluate RR,DCR,PFS,OS and toxicities in a population affected by NSCLC using gefitinib as maintenance therapy after the first line chemotherapy.Methods From January,2006 to January,2008,seventy-one patients were enrolled with stable disease or partial response after firstline chemotherapy.They were divided into the observing group and the control group.Gefitinib was administered at the dose of 250 mg in observing group;placebo was also administered everyday in control group.Results Of 71 assessable patients ,overall response rate was 36.1% (13/36) in observing group and 14.3 % (5/35) in control group respectively (x 2 = 4.633,P = 0.036),and one patient (2.8 %) was observed complete response (CR) in observing group.The disease control rate was 83.3 % (30/36) in observing group and 42.9 % (15/35) in control group,respectively,(x2 = 14.782,P < 0.001).The median PFS (progression free survival time) was 13 weeks in observing group and 11 weeks in control group respectively (x2 = 10.401,P =0.001).The median overall survival time (OS) was 13.2 months in observing group and 10.4 months in control group respectively (x2 = 7.696,P= 0.006).The median OS was 18.5 months in women and 11.2 months in men(x2 =22.864,P=0.011) .The median OS was 15.3 months in non-smokers and 10.3 months in smokers (x2 =10.389,P =0.007).The median OS was 16.0 months in adenocarcinoma and alveolar cell carcinoma patients and 10.2 months in squamous cell carcinoma patients (x 2 = 4.638,P = 0.001).The most common toxicity was rash ,diarrhea,fatigue and dry skin itching,and most of them were 1 or 2 grade.Conclusion Maintenance therapy with gefitinib after first-line chemotherapy may improve overall survival time and progression free survival time in patients with NSCLC,and it is effective and safe.%目的 评价晚期非小细胞肺癌(NSCLC)一线化疗获得部分缓解(PR)或稳定(SD)后予以吉非替尼单药维持治疗的临床疗效.方法 应用前瞻性随

  11. Pemetrexed in maintenance treatment of advanced non-squamous non-small-cell lung cancer

    Directory of Open Access Journals (Sweden)

    Minami S

    2015-01-01

    Full Text Available Seigo Minami,1 Takashi Kijima2 1Department of Respiratory Medicine, Osaka Police Hospital, 2Department of Respiratory Medicine, Allergy and Rheumatic Diseases, Osaka University Graduate School of Medicine, Osaka, Japan Abstract: Pemetrexed, a multitargeting antifolate cytotoxic drug, plays a leading role in front-line chemotherapy for patients with advanced non-squamous non-small-cell lung cancer (NSCLC. Following its approval as second-line monotherapy for locally advanced or metastatic non-squamous NSCLC, pemetrexed has established itself as the first-line regimen in combination with cisplatin, and its powerful antitumor effects and less cumulative toxicities were then taken advantage of in the JMEN and PARAMOUNT trials, respectively, to pioneer a new treatment strategy of switch and continuation maintenance monotherapy. These developments have brought about a marked paradigm shift, and made pemetrexed indispensable in the treatment for non-squamous NSCLC. So far, only three drugs have been approved for maintenance therapy; pemetrexed both by switch and continuation maintenance, erlotinib by switch maintenance, and bevacizumab by continuation maintenance. Compared with observation alone after defined cycles of the first-line chemotherapy, subsequent pemetrexed maintenance therapy has provided significantly longer survival and infrequent severe adverse events. The cost-effectiveness of pemetrexed maintenance therapy is controversial, as well as the other two maintenance drugs, bevacizumab and erlotinib. The latest attractive attention is a combination maintenance therapy. We may have to consider epidermal growth factor receptor (EGFR mutation status for selection of a combination pattern. A combination maintenance therapy of pemetrexed plus bevacizumab is potential for patients with wild-type EGFR status, while a EGFR tyrosine kinase inhibitor-containing combination is promising for patients with active EGFR mutation status. Pemetrexed will be

  12. 14 CFR 135.433 - Maintenance and preventive maintenance training program.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance and preventive maintenance training program. 135.433 Section 135.433 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... SUCH AIRCRAFT Maintenance, Preventive Maintenance, and Alterations § 135.433 Maintenance and...

  13. Financing of the category I and II state road maintenance in the Republic of Serbia

    OpenAIRE

    Borovac Života

    2015-01-01

    Investment in roads, apart from traffic benefits, has significant effect on development due to influence on overall commercial flows. Road maintenance works serve the purposes of built roads which are primarily to ensure safety of traffic flow, transport of population and goods, to connect people and to improve their living and working conditions. Maintenance works are required for protection of roads, as civil engineering structure, against damaging influe...

  14. Living Gluten Free

    Science.gov (United States)

    ... please turn JavaScript on. Feature: Celiac Disease Living Gluten Free Past Issues / Spring 2015 Table of Contents ... Learning to Live Well with Celiac Disease / Living Gluten-Free Spring 2015 Issue: Volume 10 Number 1 ...

  15. Hand Hygiene Saves Lives

    Medline Plus

    Full Text Available ... children, parents, and public health professionals. More > Hand Hygiene Saves Lives (5:10) Recommend on Facebook Tweet Share Compartir Hand Hygiene Saves Lives Hand Hygiene Saves Lives Transcript [28 KB, 2 pages] High ...

  16. Hand Hygiene Saves Lives

    Medline Plus

    Full Text Available ... including, children, parents, and public health professionals. More > Hand Hygiene Saves Lives (5:10) Recommend on Facebook Tweet Share Compartir Hand Hygiene Saves Lives Hand Hygiene Saves Lives Transcript [28 KB, 2 pages] High ...

  17. Hand Hygiene Saves Lives

    Science.gov (United States)

    ... including, children, parents, and public health professionals. More > Hand Hygiene Saves Lives (5:10) Recommend on Facebook Tweet Share Compartir Hand Hygiene Saves Lives Hand Hygiene Saves Lives Transcript [28 KB, 2 pages] High ...

  18. Living with endometriosis

    Science.gov (United States)

    Pelvic pain - living with endometriosis; Endometrial implant - living with endometriosis; Endometrioma - living with endometriosis ... counter pain relievers can reduce the pain of endometriosis. These include: Ibuprofen (Advil) Naproxen (Aleve) Acetaminophen (Tylenol) ...

  19. Living with an Arrhythmia

    Science.gov (United States)

    ... from the NHLBI on Twitter. Living With an Arrhythmia Many arrhythmias are harmless. It's common to have an occasional ... heartbeat or mild palpitations . People who have harmless arrhythmias can live healthy lives. They usually don't ...

  20. Analysis of Condition-Based Maintenance for High-Valtage Electric Power

    Institute of Scientific and Technical Information of China (English)

    HAO Jing-sheng

    2004-01-01

    The development process of high-voltage electric power equipment maintenance was introduced. It is pointed out that the trend of high-voltage electric power equipment maintenance is so called condition-based maintenance. With the development of computer technology and sensors, on-line monitoring of high-voltage electric power equipment has developed rapidly. By introducing the main principle of Schering bridge to measure tanδ, the way of on-line monitoring of high-voltage electric power equipment was explained. Difference methods of on-line monitoring of insulation parameters for 35 kV substation were discussed. Finally, the shortcomings as well as its tendency of on-line monitoring were analyzed.

  1. High Line

    DEFF Research Database (Denmark)

    Kiib, Hans

    2015-01-01

    At just over 10 meters above street level, the High Line extends three kilometers through three districts of Southwestern Manhattan in New York. It consists of simple steel construction, and previously served as an elevated rail line connection between Penn Station on 34th Street and the many....... The High Line project has been carried out as part of an open conversion strategy. The result is a remarkable urban architectural project, which works as a catalyst for the urban development of Western Manhattan. The greater project includes the restoration and reuse of many old industrial buildings...... in close proximity to the park bridge and new projects being added to fit the context. The outcome is a conglomeration of non-contemporary urban activities along the High Line, where mechanical workshops, small wholesale stores. etc. mix with new exclusive residential buildings, eminent cafés...

  2. High Line

    DEFF Research Database (Denmark)

    Kiib, Hans

    2015-01-01

    in close proximity to the park bridge and new projects being added to fit the context. The outcome is a conglomeration of non-contemporary urban activities along the High Line, where mechanical workshops, small wholesale stores. etc. mix with new exclusive residential buildings, eminent cafés......At just over 10 meters above street level, the High Line extends three kilometers through three districts of Southwestern Manhattan in New York. It consists of simple steel construction, and previously served as an elevated rail line connection between Penn Station on 34th Street and the many...... factories and warehouses on Gansevoort Street. Today the High Line is a beautiful park covered with new tiles, viewing platforms and smaller recreational areas. The park bridge has simple, uniform, urban fittings and features a variety of flowering plants, grasses, shrubs and trees from around the world...

  3. Improving industrial maintenance contract relationships

    NARCIS (Netherlands)

    De Jong, A.

    2010-01-01

    Unavailability of technical systems, such as aircraft, is expensive. Technical systems require maintenance to prevent and to remedy defects that cause unavailability. Users of technical systems usually bear the consequences of the risk of unavailability, in particular the loss of productivity. This

  4. Maintenance as a safety issue.

    Science.gov (United States)

    White, Jim

    2008-11-01

    Because safety is related to electrical power systems maintenance, it seems reasonable to assume there could be legal issues if maintenance is not performed. OSHA has not yet taken the stand that not performing maintenance as required by the manufacturer, NFPA 70B, or ANSI/NETA MTS-07 constitutes a willful violation. OSHA defines a willful citation as one where: "the employer knowingly commits with plain indifference to the law. The employer either knows that what he or she is doing constitutes a violation, or is aware that a hazardous condition existed and made no reasonable effort to eliminate it". However, NFPA 70E 2009 requires this maintenance, and OSHA has stated on its Web site that NFPA 70E is "a guide for meeting the requirements of the OSHA electrical regulations". In addition, federal courts have found that NFPA 70E is "standard industry practice." Once a company receives and accepts a willful citation, especially if received as the result of an accident investigation, its worker's compensation protection no longer shields it. One definition given by a trial attorney for a willful citation was that it is equal to negligent behavior. Be smart: Maintain that equipment and save yourself major problems, including unscheduled shutdowns and possible litigation.

  5. Computer-Assisted School Maintenance

    Science.gov (United States)

    Kennedy, Mike

    2012-01-01

    At thousands of schools and universities, years of economic troubles have led to repeated budget cuts. The reductions typically fall disproportionately on maintenance departments, where cuts are viewed as less critical than those that directly affect classroom instruction. And so nearly every facility manager at an education institution faces a…

  6. Laboratory Maintenance of Acinetobacter baumannii.

    Science.gov (United States)

    Jacobs, Anna C; Zurawski, Daniel V

    2014-11-03

    Acinetobacter baumannii has recently drawn great interest in the microbiology research community due to the increase in clinical antibiotic resistance of this organism, and persistence of this bacterial species in the hospital environment. This unit outlines protocols for the growth and maintenance of A. baumannii in the laboratory.

  7. Methadone Maintenance as Last Resort

    DEFF Research Database (Denmark)

    Järvinen, Margaretha; Miller, Gale

    2010-01-01

    Drawing on qualitative interviews with drug addicts in Copenhagen, Denmark, this article offers a phenomenological reading of a methadone maintenance program. The program is set within the principles of harm reduction, meaning that its aim is not to cure the participants’ addiction but to keep them...

  8. The Benefits of Health Maintenance.

    Science.gov (United States)

    Rosenstein, Alan H.

    1987-01-01

    The article focuses on the merits of a comprehensive, medically-oriented health maintenance/risk assessment program, and suggests that such conditions as heart disease, cancer, and arteriosclerosis can be prevented or postponed through proper nutrition, weight control, exercise, smoking cessation, and stress management. (Author/CB)

  9. Afrikaans Language Maintenance in Australia

    Science.gov (United States)

    Hatoss, Aniko; Starks, Donna; van Rensburg, Henriette Janse

    2011-01-01

    Changes in the political climate in the home country have resulted in the emigration of South Africans to English speaking countries such as Britain, Canada, Australia and New Zealand. Despite the scale of movement of the South African population, language maintenance in these diasporic contexts has received little consideration. This paper…

  10. Coastal maintenance in the Netherlands

    NARCIS (Netherlands)

    Verhagen, H.J.

    1991-01-01

    The government of The Netherlands has decided in the summer of 1990 to maintai.n the coastline at the position of 1990. This will be done mainly by artificial beach nourishment. The costs will be paid by the national government. The purpose of this coastal maintenance is to maintain a sufficient lev

  11. HVAC controls: Operation and maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Gupton, G.W. Jr.

    1987-01-01

    The introductory chapters review HVAC system processes and equipment, control system types and equipment, and equipment-to-control interactions. The succeeding chapters cover specific control systems functions, including electrical interlock and motor starting, electrical and electronic control system diagrams, pneumatic control system diagrams, air supply to pneumatic control systems, and control system maintenance.

  12. Computer-Assisted School Maintenance

    Science.gov (United States)

    Kennedy, Mike

    2012-01-01

    At thousands of schools and universities, years of economic troubles have led to repeated budget cuts. The reductions typically fall disproportionately on maintenance departments, where cuts are viewed as less critical than those that directly affect classroom instruction. And so nearly every facility manager at an education institution faces a…

  13. Methods to much improve maintenance.

    Science.gov (United States)

    Lam, K C

    2004-11-01

    The benefits to be gained from the application of both value engineering (VE) and quality systems--e.g. quality assurance (QA), and total quality management (TQM)--to the management of building services maintenance have yet to be realised by the building services industry. These concepts are particularly applicable to complex hospital engineering services.

  14. Improving industrial maintenance contract relationships

    NARCIS (Netherlands)

    De Jong, A.

    2010-01-01

    Unavailability of technical systems, such as aircraft, is expensive. Technical systems require maintenance to prevent and to remedy defects that cause unavailability. Users of technical systems usually bear the consequences of the risk of unavailability, in particular the loss of productivity. This

  15. Electrical Mechanical Maintenance. Instructor's Guide.

    Science.gov (United States)

    Santa Clara County Superintendent of Schools, San Jose, CA.

    This instructor's guide describes the development of a sixteen-week postsecondary course in electrical mechanical maintenance. Following introductory sections that provide background information and a course summary, the third section describes the instructional model used in the course. Section 4 presents an overview of instructional media used…

  16. Avionics Maintenance Technology Program Guide.

    Science.gov (United States)

    Georgia Univ., Athens. Dept. of Vocational Education.

    This program guide presents the avionics maintenance technology curriculum for technical institutes in Georgia. The general information section contains the following for both the diploma program and the associate degree program: purpose and objectives; program description, including admissions, typical job titles, and accreditation and…

  17. 14 CFR 43.9 - Content, form, and disposition of maintenance, preventive maintenance, rebuilding, and alteration...

    Science.gov (United States)

    2010-01-01

    ... Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Content, form, and disposition of maintenance, preventive maintenance, rebuilding, and alteration records (except inspections performed...

  18. Operations and maintenance - Safety challenges

    Energy Technology Data Exchange (ETDEWEB)

    Nielsen, Liv [Oljedirektoratet, Stavanger (Norway)

    1999-07-01

    With the unsteady oil prices and the possible consequences of the deregulation of the European energy markets one may expect further optimization of operating and maintenance costs. One may also expect extended use of various risk-based optimization techniques such as RCM (Reliability Centered Maintenance) and RBI (Risk Based Inspection). This presentation addresses the need for further research and development in this area. Maintenance work is necessary, but it can also create risk. The accident statistics show many examples of this. The Norwegian petroleum industry's ability to learn from previous incidents is questioned. Maintenance staff must be well trained and possess the necessary routines. Technical documentation must be updated. Uncertainties with respect to future oil and gas prices combined with the effect of the deregulation of the European energy markets will lead to even more focus on cost-effective operations and maintenance. The need for long-term research and development is stressed. Risk based techniques such as RCM and RBI are extensively used in the defence industry and the nuclear industry, but applying them to the petroleum industry requires improved risk models. Ageing effects such as corrosion, erosion, fatigue etc. can be expected, but the capability to predict, monitor and control them should be improved. At present, not even the most sophisticated risk analysis can model ageing effects. The importance of efficient use of information technology (IT) is stressed. Improving the product quality and safety often requires new technology and so research and development is important. Close cooperation with the industry is required.

  19. GRAPHICAL MODELS OF THE AIRCRAFT MAINTENANCE PROCESS

    Directory of Open Access Journals (Sweden)

    Stanislav Vladimirovich Daletskiy

    2017-01-01

    Full Text Available The aircraft maintenance is realized by a rapid sequence of maintenance organizational and technical states, its re- search and analysis are carried out by statistical methods. The maintenance process concludes aircraft technical states con- nected with the objective patterns of technical qualities changes of the aircraft as a maintenance object and organizational states which determine the subjective organization and planning process of aircraft using. The objective maintenance pro- cess is realized in Maintenance and Repair System which does not include maintenance organization and planning and is a set of related elements: aircraft, Maintenance and Repair measures, executors and documentation that sets rules of their interaction for maintaining of the aircraft reliability and readiness for flight. The aircraft organizational and technical states are considered, their characteristics and heuristic estimates of connection in knots and arcs of graphs and of aircraft organi- zational states during regular maintenance and at technical state failure are given. It is shown that in real conditions of air- craft maintenance, planned aircraft technical state control and maintenance control through it, is only defined by Mainte- nance and Repair conditions at a given Maintenance and Repair type and form structures, and correspondingly by setting principles of Maintenance and Repair work types to the execution, due to maintenance, by aircraft and all its units mainte- nance and reconstruction strategies. The realization of planned Maintenance and Repair process determines the one of the constant maintenance component. The proposed graphical models allow to reveal quantitative correlations between graph knots to improve maintenance processes by statistical research methods, what reduces manning, timetable and expenses for providing safe civil aviation aircraft maintenance.

  20. Development of A Maintenance Device for Bus-bar PT Voltage Air Switch

    Directory of Open Access Journals (Sweden)

    Zhang Xiang

    2017-01-01

    Full Text Available When PT breaks down, it takes long time of switching operation before maintenance, which seriously delays the restoration time. Based on the principle of multiple circuit, a live replacement maintenance device for PT voltage air switch is proposed. The following aspects are involved in the design of the device: the principle of device, component selection, device’s assembly and operation process. Through functional test in simulation substation and on-site installation, it is proved that the failed air switch can be lively replaced by the device without switching operation, which greatly reduces the risk on power grid caused by such faulted air switch.

  1. CONTEXT DRIVEN MAINTENANCE: AN eMAINTENANCE APPROACH

    Directory of Open Access Journals (Sweden)

    Diego GALAR

    2014-07-01

    Full Text Available All assets necessarily suffer wear and tear during operation. Prognostics can assess the current health of a system and predict its remaining life based on features capturing the gradual degradation of its operational capabilities. Prognostics are critical to improve safety, plan successful work, schedule maintenance, and reduce maintenance costs and down time. Prognosis is a relatively new area but has become an important part of Condition‐based Maintenance (CBM of systems. As there are many prognostic techniques, usage must be attuned to particular applications. Broadly stated, prognostic methods are either data‐driven, rule based, or model‐based. Each approach has advantages and disadvantages; consequently, they are often combined in hybrid applications. A hybrid model can combine some or all model types; thus, more complete information can be gathered, leading to more accurate recognition of the fault state. This approach is especially relevant in systems where the maintainer and operator know some of the failure mechanisms, but the sheer complexity of the assets precludes the development of a complete model‐based approach. The paper addresses the process of data aggregation into a contextual awareness hybrid model to get RUL values within logical confidence intervals so that the life cycle of assets can be managed and optimised.

  2. Live imaging of osteoclast inhibition by bisphosphonates in a medaka osteoporosis model

    Directory of Open Access Journals (Sweden)

    Tingsheng Yu

    2016-02-01

    Full Text Available Osteoclasts are bone-resorbing cells derived from the monocyte/macrophage lineage. Excess osteoclast activity leads to reduced bone mineral density, a hallmark of diseases such as osteoporosis. Processes that regulate osteoclast activity are therefore targeted in current osteoporosis therapies. To identify and characterize drugs for treatment of bone diseases, suitable in vivo models are needed to complement cell-culture assays. We have previously reported transgenic medaka lines expressing the osteoclast-inducing factor receptor activator of nuclear factor κB ligand (Rankl under control of a heat shock-inducible promoter. Forced Rankl expression resulted in ectopic osteoclast formation, as visualized by live imaging in fluorescent reporter lines. This led to increased bone resorption and a dramatic reduction of mineralized matrix similar to the situation in humans with osteoporosis. In an attempt to establish the medaka as an in vivo model for osteoporosis drug screening, we treated Rankl-expressing larvae with etidronate and alendronate, two bisphosphonates commonly used in human osteoporosis therapy. Using live imaging, we observed an efficient, dose-dependent inhibition of osteoclast activity, which resulted in the maintenance of bone integrity despite an excess of osteoclast formation. Strikingly, we also found that bone recovery was efficiently promoted after inhibition of osteoclast activity and that osteoblast distribution was altered, suggesting effects on osteoblast-osteoclast coupling. Our data show that transgenic medaka lines are suitable in vivo models for the characterization of antiresorptive or bone-anabolic compounds by live imaging and for screening of novel osteoporosis drugs.

  3. Extended longevity lines of Drosophila melanogaster: abundance of yolk protein gene mRNA in fat body and ovary.

    Science.gov (United States)

    Carlson, K A; Harshman, L G

    1999-04-01

    Lines of Drosophila melanogaster selected for late-life female reproduction typically exhibit correlated responses of reduced early fecundity and increased longevity. This relationship suggests a tradeoff between reproductive effort and somatic maintenance, which in turn, underlies some evolutionary theories of senescence. The mechanistic basis of the apparent tradeoff between increased longevity and reduced early-age fecundity has remained obscure. The present manuscript addresses the issues of whether the reduced early-age fecundity in selected lines corresponds to reduced yolk-protein mRNA production, and whether long-lived flies exhibit somatic maintenance in terms of relatively reduced yolk-protein mRNA production in the fat body. Yolk protein is one of the most abundant proteins used for female reproduction. By comparing a set of lines selected for late life reproduction with the corresponding control lines, we show that that yolk-protein gene mRNA relative abundance during the first four days posteclosion did not correspond to reduced early-life fecundity in the selected lines. In D. melanogaster, yolk protein is produced in the fat body and ovarian follicle cells. On the fourth day posteclosion, relatively more yolk-protein gene mRNA was present in the fat body. On day 1 posteclosion, supplemental yeast did not alter relative yolk-protein gene mRNA abundance. However, on day 4 posteclosion, supplemental yeast stimulated yolk-protein gene mRNA production in the fat body, which suggests an underlying mechanism for the nutrition-based phenotypic plasticity of fecundity previously documented in these lines. On medium without supplemental yeast, the relatively low abundance of fat body yolk-protein gene mRNA in the selected lines on day 4 posteclosion corresponds to a prediction derived from the disposable soma theory.

  4. Allergy, living and learning

    DEFF Research Database (Denmark)

    Chivato, T; Valovirta, E; Dahl, R;

    2012-01-01

    Allergy Living and Learning (ALL) is a European initiative designed to increase knowledge and understanding of people living with allergies in order to improve respiratory allergy care.......Allergy Living and Learning (ALL) is a European initiative designed to increase knowledge and understanding of people living with allergies in order to improve respiratory allergy care....

  5. ACSEPP On-Line Electronic Payment Protocol

    Institute of Scientific and Technical Information of China (English)

    WANG Shao-bin; ZHU Xian; HONG Fan

    2004-01-01

    With analyzing the existing on-line electronic payment protocols, this paper presents a new on-line electronic payment protocol named ACSEPP: Anonymous, Convenient and Secure Electronic Payment Protocol.Its aim is to design a practical electronic payment protocol which is both secure and convenient.Without using PKI_CA frame, it realized the anonymity of consumer and merchant, the convenient of handling, the low cost of maintenance and the security.

  6. Telomere reprogramming and maintenance in porcine iPS cells.

    Science.gov (United States)

    Ji, Guangzhen; Ruan, Weimin; Liu, Kai; Wang, Fang; Sakellariou, Despoina; Chen, Jijun; Yang, Yang; Okuka, Maja; Han, Jianyong; Liu, Zhonghua; Lai, Liangxue; Gagos, Sarantis; Xiao, Lei; Deng, Hongkui; Li, Ning; Liu, Lin

    2013-01-01

    Telomere reprogramming and silencing of exogenous genes have been demonstrated in mouse and human induced pluripotent stem cells (iPS cells). Pigs have the potential to provide xenotransplant for humans, and to model and test human diseases. We investigated the telomere length and maintenance in porcine iPS cells generated and cultured under various conditions. Telomere lengths vary among different porcine iPS cell lines, some with telomere elongation and maintenance, and others telomere shortening. Porcine iPS cells with sufficient telomere length maintenance show the ability to differentiate in vivo by teratoma formation test. IPS cells with short or dysfunctional telomeres exhibit reduced ability to form teratomas. Moreover, insufficient telomerase and incomplete telomere reprogramming and/or maintenance link to sustained activation of exogenous genes in porcine iPS cells. In contrast, porcine iPS cells with reduced expression of exogenous genes or partial exogene silencing exhibit insufficient activation of endogenous pluripotent genes and telomerase genes, accompanied by telomere shortening with increasing passages. Moreover, telomere doublets, telomere sister chromatid exchanges and t-circles that presumably are involved in telomere lengthening by recombination also are found in porcine iPS cells. These data suggest that both telomerase-dependent and telomerase-independent mechanisms are involved in telomere reprogramming during induction and passages of porcine iPS cells, but these are insufficient, resulting in increased telomere damage and shortening, and chromosomal instability. Active exogenes might compensate for insufficient activation of endogenous genes and incomplete telomere reprogramming and maintenance of porcine iPS cells. Further understanding of telomere reprogramming and maintenance may help improve the quality of porcine iPS cells.

  7. Machine maintenance: the rules of the game

    CERN Multimedia

    Antonella Del Rosso

    2013-01-01

    GCO, GMIO, GSPO – ever heard of them? These acronyms stand for the “roles” that best practices identify as vital to successful maintenance management. CERN’s Maintenance Management Project (MMP) team is working with the technical departments to ensure that they implement these procedures when they deal with the maintenance of the collider and its injectors and infrastructure.   The participants of the workshop on asset and maintenance management (AMMW2013), which took place at CERN in November. Since its creation in 2012, CERN’s Maintenance Framework Implementation Office (MFIO) has been promoting the deployment of harmonised maintenance management methods across the BE, GS, EN and TE Departments. “The definition and identification of the Group Coding Officers (GCO), Group Maintenance Information Officers (GMIO) and Group Spare Part Officers (GSPO) are one of the best practices that should be adopted each time a maintenance programme...

  8. Dynamic contracting mechanism for pavement maintenance management

    NARCIS (Netherlands)

    Demirel, H.C.; De Ridder, H.A.J.

    2013-01-01

    Technological advances, financial possibilities and changes of demands have increasingly affected the pavement maintenance environment for outsourcing in recent years. This induces complexity in the contracting methods of pavement maintenance activities. Despite the fact that current contracting pra

  9. The Nordic maintenance care program

    DEFF Research Database (Denmark)

    Malmqvist, Stefan; Leboeuf-Yde, Charlotte

    2009-01-01

    of maintenance care. Previous studies have identified chiropractors' choices of case management strategies in response to different case scenarios. However, the rationale for these management strategies is not known. In other words, when presented with both the case, and different management strategies......Maintenance care is a well known concept among chiropractors, although there is little knowledge about its exact definition, its indications and usefulness. As an initial step in a research program on this phenomenon, it was necessary to identify chiropractors' rationale for their use......, there was consensus on how to match these, but if only the management strategies were provided, would chiropractors be able to define the cases to fit these strategies? The objective with this study was to investigate if there is a common pattern in Finnish chiropractors' case management of patients with low back...

  10. Mining Surveillance and Maintenance Dollars

    Energy Technology Data Exchange (ETDEWEB)

    MARTINEZ, R.

    2000-02-01

    Accelerating site cleanup to reduce facility risks to the workers, the public and the environment during a time of declining federal budgets represents a significant technical and economic challenge to U.S. Department of Energy (DOE) Operations Offices and their respective contractors. A significant portion of a facility's recurring annual expenses are associated with routine, long-term surveillance and maintenance (S&M) activities. However, ongoing S&M activities do nothing to reduce risks and basically spend money that could be reallocated towards facility deactivation. This paper discusses the background around DOE efforts to reduce surveillance and maintenance costs, one approach used to perform cost reviews, lessons learned from field implementation and what assistance is available to assist DOE sites in performing these evaluations.

  11. Maintenance Chemotherapy for Advanced Non–Small-Cell Lung Cancer: New Life for an Old Idea

    Science.gov (United States)

    Gerber, David E.; Schiller, Joan H.

    2013-01-01

    Although well established for the treatment of certain hematologic malignancies, maintenance therapy has only recently become a treatment paradigm for advanced non–small-cell lung cancer. Maintenance therapy, which is designed to prolong a clinically favorable state after completion of a predefined number of induction chemotherapy cycles, has two principal paradigms. Continuation maintenance therapy entails the ongoing administration of a component of the initial chemotherapy regimen, generally the nonplatinum cytotoxic drug or a molecular targeted agent. With switch maintenance (also known as sequential therapy), a new and potentially non–cross-resistant agent is introduced immediately on completion of first-line chemotherapy. Potential rationales for maintenance therapy include increased exposure to effective therapies, decreasing chemotherapy resistance, optimizing efficacy of chemotherapeutic agents, antiangiogenic effects, and altering antitumor immunity. To date, switch maintenance therapy strategies with pemetrexed and erlotinib have demonstrated improved overall survival, resulting in US Food and Drug Administration approval for this indication. Recently, continuation maintenance with pemetrexed was found to prolong overall survival as well. Factors predicting benefit from maintenance chemotherapy include the degree of response to first-line therapy, performance status, the likelihood of receiving further therapy at the time of progression, and tumor histology and molecular characteristics. Several aspects of maintenance therapy have raised considerable debate in the thoracic oncology community, including clinical trial end points, the prevalence of second-line chemotherapy administration, the role of treatment-free intervals, quality of life, economic considerations, and whether progression-free survival is a worthy therapeutic goal in this disease setting. PMID:23401441

  12. Chromatin replication and epigenome maintenance

    DEFF Research Database (Denmark)

    Alabert, Constance; Groth, Anja

    2012-01-01

    Stability and function of eukaryotic genomes are closely linked to chromatin structure and organization. During cell division the entire genome must be accurately replicated and the chromatin landscape reproduced on new DNA. Chromatin and nuclear structure influence where and when DNA replication...... initiates, whereas the replication process itself disrupts chromatin and challenges established patterns of genome regulation. Specialized replication-coupled mechanisms assemble new DNA into chromatin, but epigenome maintenance is a continuous process taking place throughout the cell cycle. If DNA...

  13. Profitability Versus Construction Equipment Maintenance

    Science.gov (United States)

    2010-05-01

    E7(/(3+21(180%(5 ,QFOXGHDUHDFRGH XX-05-2010 Master’s Thesis DEC 2009 - MAY 2010 Profitability Versus Construction Equipment Maintenance...optimization of a perceived profit . This project recommends a decision support model that can be used by private and public entities alike to determine the...best fir acquisition method between rent-lease-buy and guidance for profitability optimization. Methods of life cycle cost estimating and decision

  14. MODERN MANAGEMENT METHODS FOR EQUIPMENT MAINTENANCE

    OpenAIRE

    Ioan Cucu; Ciprian Cucu

    2009-01-01

    The concept of maintenance in the field of complex equipment wasdeveloped in the USA being quickly adopted by European countries and Japan. TheAmerican maintenance concept has the significance of creating a support system forindustrial equipment functioning. Functional maintenance is one of the most frequentused methods in maintenance management for industrial enterprises. This paper tries topresent some aspects related to the systemic approach of the functional maintenancemodel, starting fro...

  15. Business case for industrial DSM maintenance

    OpenAIRE

    Groenewald, H.J.; Van Rensburg, J.F.; Marais, J.H.

    2014-01-01

    The performance of industrial DSM projects often deteriorates without proper maintenance. Underperforming DSM projects waste money and increase the demand for electricity from Eskom. A solution to this problem is dedicated maintenance on industrial DSM projects. This ensures maximum performance and maximum electricity cost savings. In this paper, the business case for industrial DSM maintenance is presented. Results show that the benefits significantly outweigh the cost of DSM maintenance ...

  16. On condition based maintenance policy

    Directory of Open Access Journals (Sweden)

    Jong-Ho Shin

    2015-04-01

    Full Text Available In the case of a high-valuable asset, the Operation and Maintenance (O&M phase requires heavy charges and more efforts than the installation (construction phase, because it has long usage life and any accident of an asset during this period causes catastrophic damage to an industry. Recently, with the advent of emerging Information Communication Technologies (ICTs, we can get the visibility of asset status information during its usage period. It gives us new challenging issues for improving the efficiency of asset operations. One issue is to implement the Condition-Based Maintenance (CBM approach that makes a diagnosis of the asset status based on wire or wireless monitored data, predicts the assets abnormality, and executes suitable maintenance actions such as repair and replacement before serious problems happen. In this study, we have addressed several aspects of CBM approach: definition, related international standards, procedure, and techniques with the introduction of some relevant case studies that we have carried out.

  17. Difference and Inheritance of the Sterility Maintenance of CMS in Indica Rice

    Institute of Scientific and Technical Information of China (English)

    XU Jian-hong; XUE Qing-zhong

    2002-01-01

    The inheritance of the sterility maintenance ability was studied for three types of CMS lines (Zhenshan97A, XieqingzaoA and Ⅱ-32A) and several lines in indica rice. The result showed that the abilities to keep the male sterility of the maintainer lines strengthened obviously with the progressive backcrossing. The critical stage to maintain the sterility of CMS lines happened usually in BC5-6 generation. The selection of the recurrent parent gave an obvious influence on the pollen fertility distribution of the later generations. The author has discussed ways of improving of the maintainer lines.

  18. Collaborative learning in condition based maintenance

    NARCIS (Netherlands)

    Koochaki, J.; Ao, SI; Gelman, L; Hukins, DWL; Hunter, A; Korsunsky, AM

    2009-01-01

    In recent years, the importance of reliable and consistent production equipments has increased. As a result, companies are shifting their maintenance policy from preventive maintenance towards Condition Based Maintenance (CBM). Despite the growing trend in this area and success stories of CBM implem

  19. 23 CFR 1.27 - Maintenance.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Maintenance. 1.27 Section 1.27 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION GENERAL MANAGEMENT AND ADMINISTRATION GENERAL § 1.27 Maintenance... maintenance of projects shall be carried out in accordance with policies and procedures issued by...

  20. 41 CFR 101-39.303 - Maintenance.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Maintenance. 101-39.303... Maintenance. In order to ensure uninterrupted operation of GSA Interagency Fleet Management System (IFMS) vehicles, safety and preventive maintenance inspections will be performed at regularly scheduled...

  1. 40 CFR 68.56 - Maintenance.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 15 2010-07-01 2010-07-01 false Maintenance. 68.56 Section 68.56... ACCIDENT PREVENTION PROVISIONS Program 2 Prevention Program § 68.56 Maintenance. (a) The owner or operator... maintenance procedures. (b) The owner or operator shall train or cause to be trained each employee involved...

  2. 14 CFR 145.217 - Contract maintenance.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Contract maintenance. 145.217 Section 145...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.217 Contract maintenance. (a) A certificated repair station may contract a maintenance function pertaining to an article to...

  3. 40 CFR 86.1725-99 - Maintenance.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 19 2010-07-01 2010-07-01 false Maintenance. 86.1725-99 Section 86....1725-99 Maintenance. The provisions of § 86.094-25 and subsequent model year provisions apply to this... are subject to the applicable Otto-cycle or diesel engine maintenance requirements of § 86.094-25...

  4. 49 CFR 195.420 - Valve maintenance.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Valve maintenance. 195.420 Section 195.420 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... PIPELINE Operation and Maintenance § 195.420 Valve maintenance. (a) Each operator shall maintain each...

  5. 40 CFR 86.001-25 - Maintenance.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Maintenance. 86.001-25 Section 86.001...-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.001-25 Maintenance. Section 86.001-25 includes text... engines. (2) Maintenance performed on vehicles, engines, subsystems, or components used to...

  6. 49 CFR 37.203 - Lift maintenance.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Lift maintenance. 37.203 Section 37.203... DISABILITIES (ADA) Over-the-Road Buses (OTRBs) § 37.203 Lift maintenance. (a) The entity shall establish a system of regular and frequent maintenance checks of lifts sufficient to determine if they are...

  7. 49 CFR 192.749 - Vault maintenance.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Vault maintenance. 192.749 Section 192.749 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Maintenance § 192.749 Vault maintenance. (a) Each...

  8. 47 CFR 80.96 - Maintenance tests.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Maintenance tests. 80.96 Section 80.96... MARITIME SERVICES Operating Requirements and Procedures Operating Procedures-General § 80.96 Maintenance tests. Stations are authorized to engage in test transmissions necessary for maintenance of the...

  9. 5 CFR 850.302 - Record maintenance.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Record maintenance. 850.302 Section 850... (CONTINUED) RETIREMENT SYSTEMS MODERNIZATION Records § 850.302 Record maintenance. (a) The retirement and..., for the initiation and maintenance of records, evidence, or other information described in this...

  10. 50 CFR 80.17 - Maintenance.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 6 2010-10-01 2010-10-01 false Maintenance. 80.17 Section 80.17 Wildlife... WILDLIFE RESTORATION AND DINGELL-JOHNSON SPORT FISH RESTORATION ACTS § 80.17 Maintenance. The State is responsible for maintenance of all capital improvements acquired or constructed with Wildlife and Sport...

  11. 47 CFR 87.69 - Maintenance tests.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Maintenance tests. 87.69 Section 87.69... Operating Requirements and Procedures Operating Requirements § 87.69 Maintenance tests. The licensee may make routine maintenance tests on equipment other than emergency locator transmitters if there is...

  12. 49 CFR 232.611 - Periodic maintenance.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Periodic maintenance. 232.611 Section 232.611 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... maintenance. (a) In addition to the maintenance requirements contained in § 232.303(b) through (d), a...

  13. Resurgence: The Unintended Maintenance of Problem Behavior

    Science.gov (United States)

    Ringdahl, Joel E.; St. Peter, Claire

    2017-01-01

    Researchers, teachers, practitioners, and parents are often concerned with how to program for and achieve the maintenance of appropriate behavior. The unintended maintenance of problem behavior is less often evaluated. This article describes a behavioral phenomenon, resurgence, that may result in the unintended maintenance of problem behavior.…

  14. Maintenance of NASTRAN (R) as a state-of-the-art computer program

    Science.gov (United States)

    Rogers, J. L., Jr.

    1980-01-01

    The maintenance requirements for a large, general purpose, finite element computer program are presented. The program is maintained as state-of-the-art on three computer systems (IBM, CDC, and UNIVAC) with respect to both finite element and computer technology. There are four primary areas involved in the maintenance effort: (1) error correction; (2) incorporation of advances in technology; (3) documentation; and (4) new level generation. The complexity of the maintenance effort is compounded by the sizes of the program (400,000 lines of code) and the documentation (7000 pages divided into seven manuals).

  15. Evaluation of the application of the triple bottom line. case study: caldeirão de SANTA CRUZ community (CEARÁ

    Directory of Open Access Journals (Sweden)

    Artur Gomes de Oliveira

    2016-04-01

    Full Text Available The Triple Bottom Line, composed by the Environmental, Social and Economic dimensions, has been widely accepted since its implementation will involve the maintenance or development of factors that lead to sustainability. When defining this concept, Elkington (2012 quoted the director of the Environmental Management Program at the University of Michigan, Stuart Hart, who said that large corporations would be the only organizations that could achieve sustainability. The aim of this work is to verify if sustainability, at a given site, can be achieved without the aid of large organizations. Specifically, the objective is to check the status of the Caldeirão de Santa Cruz Community, located in the state of Ceará / Brazil, in the period between 1926 and 1937. For this evaluation, it was used the Triple Bottom Line model proposed by Elkington (2012. The results indicated that the concept known as Triple Bottom Line was implied in the Caldeirão de Santa Cruz community’s way of living and that was achieved through the work carried out in the community, without the help of any organization. The results also showed that the behavior and the way of living and working of the community bothered some sectors of society.  Keywords: Sustainability; Triple Bottom Line; Caldeirão de Santa Cruz; Ceará.

  16. 14 CFR 135.425 - Maintenance, preventive maintenance, and alteration programs.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance, preventive maintenance, and alteration programs. 135.425 Section 135.425 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... ON BOARD SUCH AIRCRAFT Maintenance, Preventive Maintenance, and Alterations § 135.425...

  17. 14 CFR 91.407 - Operation after maintenance, preventive maintenance, rebuilding, or alteration.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Operation after maintenance, preventive maintenance, rebuilding, or alteration. 91.407 Section 91.407 Aeronautics and Space FEDERAL AVIATION... OPERATING AND FLIGHT RULES Maintenance, Preventive Maintenance, and Alterations § 91.407 Operation...

  18. 14 CFR 135.437 - Authority to perform and approve maintenance, preventive maintenance, and alterations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Authority to perform and approve maintenance, preventive maintenance, and alterations. 135.437 Section 135.437 Aeronautics and Space FEDERAL... AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Maintenance, Preventive Maintenance,...

  19. 14 CFR 135.423 - Maintenance, preventive maintenance, and alteration organization.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance, preventive maintenance, and alteration organization. 135.423 Section 135.423 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... ON BOARD SUCH AIRCRAFT Maintenance, Preventive Maintenance, and Alterations § 135.423...

  20. 14 CFR 43.3 - Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations. 43.3 Section 43.3 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING,...

  1. 14 CFR 121.379 - Authority to perform and approve maintenance, preventive maintenance, and alterations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Authority to perform and approve maintenance, preventive maintenance, and alterations. 121.379 Section 121.379 Aeronautics and Space FEDERAL... OPERATIONS Maintenance, Preventive Maintenance, and Alterations § 121.379 Authority to perform and...

  2. 75 FR 4099 - Maintenance Wage Rate Wage Recommendation and Maintenance Wage Survey; Report of Additional...

    Science.gov (United States)

    2010-01-26

    ... URBAN DEVELOPMENT Maintenance Wage Rate Wage Recommendation and Maintenance Wage Survey; Report of... adopt prevailing wage rates for maintenance laborers and mechanics, and to approve or refer to the U.S... lists the following information: Title of Proposal: Maintenance Wage Rate Wage Recommendation...

  3. 75 FR 37457 - Maintenance Wage Rate Wage Recommendation and Maintenance Wage Survey; Report of Additional...

    Science.gov (United States)

    2010-06-29

    ... URBAN DEVELOPMENT Maintenance Wage Rate Wage Recommendation and Maintenance Wage Survey; Report of... adopt prevailing wage rates for maintenance laborers and mechanics, and to approve or refer to the U.S... Lists the Following Information Title of Proposal: Maintenance Wage Rate Wage Recommendation...

  4. Performance Centered Maintenance as a Core Policy in Strategic Maintenance Control

    NARCIS (Netherlands)

    Apallius de Vos, Jack I.; van Dongen, Leonardus Adriana Maria

    2015-01-01

    Rolling stock maintenance in the Netherlands traditionally is performed on several levels of complexity and therefore on levels of non-availability and cost. The challenge in optimizing performance and cost of rolling stock maintenance is to integrate the policy on maintenance concepts, maintenance

  5. 14 CFR 91.1425 - CAMP: Maintenance, preventive maintenance, and alteration programs.

    Science.gov (United States)

    2010-01-01

    ... maintenance, and alteration programs. Each program manager who maintains program aircraft under a CAMP must..., preventive maintenance, or alterations; and (c) Each aircraft released to service is airworthy and has been... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false CAMP: Maintenance, preventive maintenance...

  6. Budesonide/formoterol maintenance plus reliever therapy

    DEFF Research Database (Denmark)

    Bisgaard, Hans; Le Roux, Pascal; Bjåmer, Ditlef;

    2006-01-01

    on ICS investigated whether a novel regimen using budesonide/formoterol for maintenance and reliever therapy (Symbicort maintenance and relief therapy [SMART]) [Symbicort; AstraZeneca R&D, Lund, Sweden] could reduce exacerbations. METHODS: Patients received SMART (budesonide/formoterol 80/4.5 microg qd...... maintenance plus additional inhalations for symptom relief), budesonide/formoterol 80/4.5 microg qd for maintenance (fixed combination), or higher-dose budesonide 320 microg qd (fixed-dose budesonide). Blinded as-needed medication (terbutaline 0.4 microg) was provided in both fixed-dose groups. RESULTS: SMART......, respectively; both p maintenance and as-needed symptom relief reduces the exacerbation...

  7. Analyzing machine noise for real time maintenance

    Science.gov (United States)

    Yamato, Yoji; Fukumoto, Yoshifumi; Kumazaki, Hiroki

    2017-02-01

    Recently, IoT technologies have been progressed and applications of maintenance area are expected. However, IoT maintenance applications are not spread in Japan yet because of one-off solution of sensing and analyzing for each case, high cost to collect sensing data and insufficient maintenance automation. This paper proposes a maintenance platform which analyzes sound data in edges, analyzes only anomaly data in cloud and orders maintenance automatically to resolve existing technology problems. We also implement a sample application and compare related work.

  8. Energy, control and DNA structure in the living cell

    DEFF Research Database (Denmark)

    Wijker, J.E.; Jensen, Peter Ruhdal; Gomes, A. Vaz

    1995-01-01

    Maintenance (let alone growth) of the highly ordered living cell is only possible through the continuous input of free energy. Coupling of energetically downhill processes (such as catabolic reactions) to uphill processes is essential to provide this free energy and is catalyzed by enzymes either...

  9. The Method of Mission Oriented Maintenance

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    In a real application, equipment in good condition sometimes have to be repairedbecause the equipment does not satisfy the requirements of the mission; However, it is notnecessary to repair some equipment with failures because the failures do not affect the mission completion. In these cases, maintenance activity guided by present maintenance methodsmay sometimes affect the mission completion in time or bring about extra maintenance. To overcome the shortage of present maintenance methods, we propose an idea and method of missionoriented maintenance (MOM) to deal with the maintenance policy on these kinds of problems. This method can work out different maintenance policies corresponding to differentmissions with full consideration of missions and mission requirements for the equipment.

  10. Development of blanket remote maintenance system

    Energy Technology Data Exchange (ETDEWEB)

    Kakudate, Satoshi; Nakahira, Masataka; Oka, Kiyoshi; Taguchi, Kou [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1998-04-01

    ITER in-vessel components such as blankets are scheduled maintenance components, including complete shield blanket replacement for breeding blankets. In-vessel components are activated by 14 MeV neutrons, so blanket maintenance requires remote handling equipment and tools able to handle heavy payloads of about 4 tons within a positioning accuracy of 2 mm under intense gamma radiation. To facilitate remote maintenance, blankets are segmented into 730 modules and rail-mounted vehicle remote maintenance was developed. According to the ITER R and D program, critical technology related to blanket maintenance was developed extensively through joint efforts of the Japan, EU, and U.S. home teams. This paper summarizes current blanket maintenance technology conducted by the Japan Home Team, including development of full-scale remote handling equipment and tools for blanket maintenance. (author)

  11. Development of divertor remote maintenance system

    Energy Technology Data Exchange (ETDEWEB)

    Takeda, Nobukazu; Oka, Kiyoshi; Akou, Kentaro; Takiguchi, Yuji [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1998-04-01

    The ITER divertor is categorized as a scheduled maintenance component because of extreme heat and particle loads it is exposed to by plasma. It is also highly activated by 14 MeV neutrons. Reliable remote handling equipment and tools are required for divertor maintenance under intense gamma radiation. To facilitate remote maintenance, the divertor is segmented into 60 cassettes, and each cassette weighing about 25 tons and maintained and replaced through four maintenance ports each 90 degrees. Divertor cassettes must be transported toroidally and radially for replacement through maintenance ports. Remote handling involving cassette movers and carriers for toroidal and radial transport has been developed. Under the ITER R and D program, technology critical to divertor cassette maintenance is being developed jointly by Japan, E.U., and U.S. home teams. This paper summarizes divertor remote maintenance design and the status of technology development by the Japan Home Team. (author)

  12. Lean thinking for a maintenance process

    Directory of Open Access Journals (Sweden)

    Sherif Mostafa

    2015-01-01

    Full Text Available The maintenance process shares significant operating costs in an organisation. Lean thinking can be incorporated into maintenance activities through applying its principles and practices/tools. Lean maintenance (LM is a prerequisite for lean manufacturing systems. This research proposes a new structure for LM process based on a systematic literature review of a significant number of related articles that were published on LM. The process structure is designed based on the five lean principles to guide and support organisations to pursue maintenance excellence. This study establishes a scheme for LM tools that are structured into 2 level 4 bundles and 26 lean practices/tools and develops a House of Waste (HoW to demonstrate the association between maintenance wastes and the LM tools. With a successful accomplishment of the proposed scheme, the performance of a maintenance department can create more improvement opportunities over time to reach the maintenance excellence status.

  13. Living with hearing loss

    Science.gov (United States)

    ... medlineplus.gov/ency/patientinstructions/000360.htm Living with hearing loss To use the sharing features on this page, please enable JavaScript. If you are living with hearing loss, you know that it takes extra effort to ...

  14. Living with Parkinson's

    Science.gov (United States)

    ... PD. Strategies for living well may include: Managing nutrition and medications – to maintain the highest quality of daily living with Parkinson's disease. Performing activities that may benefit you and your ...

  15. Living with Thalassemias

    Science.gov (United States)

    ... Public » Health Topics » Thalassemias » Living With Thalassemias Explore Thalassemias What Are... Other Names Causes Who Is at Risk Signs & Symptoms Diagnosis Treatments Prevention Living With Clinical Trials Links Related Topics Anemia ...

  16. Modelling live forensic acquisition

    CSIR Research Space (South Africa)

    Grobler, MM

    2009-06-01

    Full Text Available This paper discusses the development of a South African model for Live Forensic Acquisition - Liforac. The Liforac model is a comprehensive model that presents a range of aspects related to Live Forensic Acquisition. The model provides forensic...

  17. Living with Sarcoidosis

    Science.gov (United States)

    ... page from the NHLBI on Twitter. Living With Sarcoidosis Sarcoidosis has no cure, but you can take ... Content: NEXT >> Featured Video Living With and Managing Sarcoidosis 05/18/2011 This video—presented by the ...

  18. Administration for Community Living

    Science.gov (United States)

    ... Public Input Working Together, in Our Communities The Administration for Community Living was created around the fundamental ... Players U.S. Department of Health and Human Services, Administration for Community Living

  19. Living with Hemophilia

    Science.gov (United States)

    ... page from the NHLBI on Twitter. Living With Hemophilia If you or your child has hemophilia, you ... today is likely to live a normal lifespan. Hemophilia Treatment Centers The Federal Government funds a nationwide ...

  20. Peace maintenance and political messages

    DEFF Research Database (Denmark)

    McAtackney, Laura

    2011-01-01

    The role of wall murals – as both territorial markers and as a means of maintaining and reinforcing identity – has been a frequent subject of study as a way of understanding the recent conflict in Northern Ireland, euphemistically known as ‘the Troubles’ (c. 1969–c. 1998). Whilst the heightened p......-essentializing their existence. It is suggested that there is a need to contextualize and consider the current and potential role of walls in the maintenance of peace and facilitating a ‘new’ Northern Ireland....

  1. Proactive maintenance for mechanical systems

    CERN Document Server

    Fitch, EC

    1992-01-01

    Written by Dr. E.C. Fitch, the book contains over 340 double column pages which include 400 figures and tables, a comprehensive bibliography, and index. There is no root cause of mechanical failure, known to the author, that has been ignored or left out. Nowhere in the world is this information put together in such a concise and comprehensive manner, and the book will serve as a reference and guide to designers, practising engineers, maintenance technicians, plant managers and operators who must design, maintain and operate fluid-dependent mechanical systems.

  2. Language Maintenance and Language Shift: Dialect vs Italian Among Italo-Australians.

    Science.gov (United States)

    Bettoni, Camilla; Rubino, Antonia

    1998-01-01

    Presents data on patterns of language use by Italians living in Australia, focusing on the maintenance of Italian and Dialect under the impact of widespread shift to English. Data from self-report surveys suggest differences by gender, age, and region of origin and note that the position of Italian, though more limited, is somewhat more solid than…

  3. Investigation on Development of Condition-Based Maintenance in Power Supply System

    Institute of Scientific and Technical Information of China (English)

    Li Minghua; Yan Zhang; Liu Chunwen; Xue Suijing; Liu Xin; Wang Ben

    2006-01-01

    @@ To improve the operation reliability of power supply system in China, it is of great significance to know the status of condition-based maintenance (CBM) in the system and accumulate related experience in recent years. This paper analyzes the current modes of detection and repair,maintenance periods, the operation status of on-line monitoring devices equipped and the existing problems of them. The results show that there exists an urgent need in intensifying the quality control and inspection of on-line monitoring products at present.

  4. Reducing costs by clustering maintenance activities for multiple critical units

    NARCIS (Netherlands)

    de Jonge, Bram; Klingenberg, Warse; Teunter, Ruud; Tinga, Tiedo

    Advances in sensor technology have enabled companies to make significant progress towards achieving condition-based maintenance (CBM). CBM provides the opportunity to perform maintenance actions more effectively. However, scheduling maintenance at the unit level may imply a high maintenance

  5. Long-lived force patterns and deformation waves at repulsive epithelial boundaries

    Science.gov (United States)

    Rodríguez-Franco, Pilar; Brugués, Agustí; Marín-Llauradó, Ariadna; Conte, Vito; Solanas, Guiomar; Batlle, Eduard; Fredberg, Jeffrey J.; Roca-Cusachs, Pere; Sunyer, Raimon; Trepat, Xavier

    2017-10-01

    For an organism to develop and maintain homeostasis, cell types with distinct functions must often be separated by physical boundaries. The formation and maintenance of such boundaries are commonly attributed to mechanisms restricted to the cells lining the boundary. Here we show that, besides these local subcellular mechanisms, the formation and maintenance of tissue boundaries involves long-lived, long-ranged mechanical events. Following contact between two epithelial monolayers expressing, respectively, EphB2 and its ligand ephrinB1, both monolayers exhibit oscillatory patterns of traction forces and intercellular stresses that tend to pull cell-matrix adhesions away from the boundary. With time, monolayers jam, accompanied by the emergence of deformation waves that propagate away from the boundary. This phenomenon is not specific to EphB2/ephrinB1 repulsion but is also present during the formation of boundaries with an inert interface and during fusion of homotypic epithelial layers. Our findings thus unveil a global physical mechanism that sustains tissue separation independently of the biochemical and mechanical features of the local tissue boundary.

  6. Contribution to the Optimization of Strategy of Maintenance by Lean Six Sigma

    Science.gov (United States)

    Youssouf, Ayadi; Rachid, Chaib; Ion, Verzea

    The efficiency of the maintenance of the industrial systems is a major economic stake for their business concern. The main difficulties and the sources of ineffectiveness live in the choice of the actions of maintenance especially when the machine plays a vital role in the process of production. But as Algeria has embarked on major infrastructure projects in transport, housing, automobile, manufacturing industry and construction (factories, housing, highway, subway, tram, etc.) requiring new implications on maintenance strategies that meet industry requirements imposed by the exploitation. From then on and seen the importance of the maintenance on the economic market and sound impacts on the performances of the installations, methods of optimization were developed. For this purpose, to ensure the survival of businesses, be credible, contributing and competitive in the market, maintenance services must continually adapt to the progress of technical areas, technological and organizational even help maintenance managers to construct or to modify maintenance strategies, objective of this work. Our contribution in this work focuses on the optimization of maintenance for industrial systems by the use of Lean six Sigma bases. Lean Six Sigma is a method of improving the quality and profitability based on mastering statically of process and it is also a management style that based on a highly regulated organization dedicated to managing project. The method is based on five main steps summarized in the acronym (DMAIC): Define Measure, Analyze, Improve and Control. Application of the method on the maintenance processes with using maintenance methods during the five phases of the method will help to reduce costs and losses in order to strive for optimum results in terms of profit and quality.

  7. 49 CFR 192.705 - Transmission lines: Patrolling.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Transmission lines: Patrolling. 192.705 Section... NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Maintenance § 192.705 Transmission... adjacent to the transmission line right-of-way for indications of leaks, construction activity, and...

  8. 49 CFR 192.709 - Transmission lines: Record keeping.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Transmission lines: Record keeping. 192.709... TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Maintenance § 192.709 Transmission lines: Record keeping. Each operator shall maintain the following records for transmission...

  9. 30 CFR 57.4505 - Fuel lines to underground areas.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Fuel lines to underground areas. 57.4505... NONMETAL MINE SAFETY AND HEALTH SAFETY AND HEALTH STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Fire Prevention and Control Installation/construction/maintenance § 57.4505 Fuel lines to underground areas. Fuel...

  10. Formation and maintenance of the Golgi apparatus in plant cells.

    Science.gov (United States)

    Ito, Yoko; Uemura, Tomohiro; Nakano, Akihiko

    2014-01-01

    The Golgi apparatus plays essential roles in intracellular trafficking, protein and lipid modification, and polysaccharide synthesis in eukaryotic cells. It is well known for its unique stacked structure, which is conserved among most eukaryotes. However, the mechanisms of biogenesis and maintenance of the structure, which are deeply related to ER-Golgi and intra-Golgi transport systems, have long been mysterious. Now having extremely powerful microscopic technologies developed for live-cell imaging, the plant Golgi apparatus provides an ideal system to resolve the question. The plant Golgi apparatus has unique features that are not conserved in other kingdoms, which will also give new insights into the Golgi functions in plant life. In this review, we will summarize the features of the plant Golgi apparatus and transport mechanisms around it, with a focus on recent advances in Golgi biogenesis by live imaging of plants cells.

  11. Mitochondrial DNA maintenance: an appraisal.

    Science.gov (United States)

    Akhmedov, Alexander T; Marín-García, José

    2015-11-01

    Mitochondria play a crucial role in a variety of cellular processes ranging from energy metabolism, generation of reactive oxygen species (ROS), and Ca(2+) handling to stress responses, cell survival, and death. Malfunction of the organelle may contribute to the pathogenesis of neuromuscular disorders, cancer, premature aging, and cardiovascular diseases, including myocardial ischemia, cardiomyopathy, and heart failure. Mitochondria are unique as they contain their own genome organized into DNA-protein complexes, so-called mitochondrial nucleoids, along with multiprotein machineries, which promote mitochondrial DNA (mtDNA) replication, transcription, and repair. Although the organelle possesses almost all known nuclear DNA repair pathways, including base excision repair, mismatch repair, and recombinational repair, the proximity of mtDNA to the main sites of ROS production and the lack of protective histones may result in increased susceptibility to oxidative stress and other types of mtDNA damage. Defects in the components of these highly organized machineries, which mediate mtDNA maintenance (replication and repair), may result in accumulation of point mutations and/or deletions in mtDNA and decreased mtDNA copy number impairing mitochondrial function. This review will focus on the mechanisms of mtDNA maintenance with emphasis on the proteins implicated in these processes and their functional role in various disease conditions and aging.

  12. Ontology Maintenance using Textual Analysis

    Directory of Open Access Journals (Sweden)

    Yassine Gargouri

    2003-10-01

    Full Text Available Ontologies are continuously confronted to evolution problem. Due to the complexity of the changes to be made, a maintenance process, at least a semi-automatic one, is more and more necessary to facilitate this task and to ensure its reliability. In this paper, we propose a maintenance ontology model for a domain, whose originality is to be language independent and based on a sequence of text processing in order to extract highly related terms from corpus. Initially, we deploy the document classification technique using GRAMEXCO to generate classes of texts segments having a similar information type and identify their shared lexicon, agreed as highly related to a unique topic. This technique allows a first general and robust exploration of the corpus. Further, we apply the Latent Semantic Indexing method to extract from this shared lexicon, the most associated terms that has to be seriously considered by an expert to eventually confirm their relevance and thus updating the current ontology. Finally, we show how the complementarity between these two techniques, based on cognitive foundation, constitutes a powerful refinement process.

  13. Ontology Maintenance using Textual Analysis

    Directory of Open Access Journals (Sweden)

    Yassine Gargouri

    2003-10-01

    Full Text Available Ontologies are continuously confronted to evolution problem. Due to the complexity of the changes to be made, a maintenance process, at least a semi-automatic one, is more and more necessary to facilitate this task and to ensure its reliability. In this paper, we propose a maintenance ontology model for a domain, whose originality is to be language independent and based on a sequence of text processing in order to extract highly related terms from corpus. Initially, we deploy the document classification technique using GRAMEXCO to generate classes of texts segments having a similar information type and identify their shared lexicon, agreed as highly related to a unique topic. This technique allows a first general and robust exploration of the corpus. Further, we apply the Latent Semantic Indexing method to extract from this shared lexicon, the most associated terms that has to be seriously considered by an expert to eventually confirm their relevance and thus updating the current ontology. Finally, we show how the complementarity between these two techniques, based on cognitive foundation, constitutes a powerful refinement process.

  14. production lines

    Directory of Open Access Journals (Sweden)

    Jingshan Li

    2000-01-01

    Full Text Available In this work, serial production lines with finished goods buffers operating in the pull regime are considered. The machines are assumed to obey Bernoulli reliability model. The problem of satisfying customers demand is addressed. The level of demand satisfaction is quantified by the due-time performance (DTP, which is defined as the probability to ship to the customer a required number of parts during a fixed time interval. Within this scenario, the definitions of DTP bottlenecks are introduced and a method for their identification is developed.

  15. 222-S Laboratory maintenance implementation plan

    Energy Technology Data Exchange (ETDEWEB)

    Heinemann, J.L.

    1997-08-13

    This Maintenance Improvement Plan has been developed for maintenance functions associated with the 222-S Laboratory. This plan is developed from the guidelines presented by Department of Energy (DOE) Order 4330.4B, Maintenance Management Program (DOE 1994), Chapter 11. The objective of this plan is to provide information for establishing and identifying WMH conformance programs and policies applicable to implementation of DOE Order 4330.4B guidelines. In addition, this maintenance plan identifies the actions necessary to develop a cost effective and efficient maintenance program at 222-S Laboratory. Maintenance activities are mainly going to be performed by existing maintenance organizations within Waste Management Federal Services of Hanford (WMH). Most maintenance performed at 222-S Laboratory is performed by the 222-S Laboratory maintenance organization. This 222-S Laboratory Maintenance Implementation Plan provides the interface requirements and responsibilities as they apply specifically to 222-S Laboratory. This document provides an implementation schedule which has been developed for items considered to be deficient or in need of improvement. The discussion section as applied to 222-S Laboratory implementation has been developed from a review of programs and practices utilizing the graded approach. Biennial review and additional reviews are conducted as significant programmatic and mission changes are made. This document is revised as necessary to keep this document current and in compliance with DOE requirements.

  16. Estimating Maintenance Cost for Web Applications

    Directory of Open Access Journals (Sweden)

    Ion IVAN

    2016-01-01

    Full Text Available The current paper tackles the issue of determining a method for estimating maintenance costs for web applications. The current state of research in the field of web application maintenance is summarized and leading theories and results are highlighted. The cost of web maintenance is determined by the number of man-hours invested in maintenance tasks. Web maintenance tasks are categorized into content maintenance and technical maintenance. Research is centered on analyzing technical maintenance tasks. The research hypothesis is formulated on the assumption that the number of man-hours invested in maintenance tasks can be assessed based on the web application’s user interaction level, complexity and content update effort. Data regarding the costs of maintenance tasks is collected from 24 maintenance projects implemented by a web development company that tackles a wide area of web applications. Homogeneity and diversity of collected data is submitted for debate by presenting a sample of the data and depicting the overall size and comprehensive nature of the entire dataset. A set of metrics dedicated to estimating maintenance costs in web applications is defined based on conclusions formulated by analyzing the collected data and the theories and practices dominating the current state of research. Metrics are validated with regards to the initial research hypothesis. Research hypothesis are validated and conclusions are formulated on the topic of estimating the maintenance cost of web applications. The limits of the research process which represented the basis for the current paper are enunciated. Future research topics are submitted for debate.

  17. Maintenance Management in the ST Division

    CERN Document Server

    Rühl, I

    2001-01-01

    The Maintenance Manager Working Group was established in order to revise existing maintenance contracts and to provide comprehensive and applicable tools for the execution of maintenance activities in the ST Division. This was necessary mainly due to the fact that the maintenance plans in the Division have often evolved rather than being consciously set up and in respect to the change towards result orientated contracts. Also, because the decrease of CERN staff and the trend towards outsourcing, a tighter and well-organised maintenance management has to be established. In order to achieve the most realistic and applicable results the technical and commercial aspects must be considered by following the industrial approach. This document will outline the objectives of the working group and will show the progress that has been made by the implementation of already achieved results. Furthermore this paper will show a possible structure of future maintenance management.

  18. Reliability centered maintenance mini-seminar

    Energy Technology Data Exchange (ETDEWEB)

    Laakso, K.; Simola, K. (eds.) [VTT Automation, Espoo (Finland)

    2000-10-01

    In the Earlier NKS-project RAK-1 (1994-1997), the sub-project RAK-1.4, 'Maintenance Strategies and Ageing' focused on development of methodologies and tools for improving maintenance strategies. In the NKS/SOS-2 project (1998-2001), the maintenance related Nordic co-operation is continued. For exchange of information and as background and for discussions related to maintenance decisions in the NKS/SOS-2 project, a mini-seminar on maintenance strategies with an emphasis on reliability centred maintenance (RCM) approaches was arranged 14.10.1999. The report summarises the topics of the presentations and discussions at the seminar. The transparencies presented at the mini-seminar are enclosed in this report. (au)

  19. Maintenance Therapy for NSCLC: Consensus and Controversy

    Institute of Scientific and Technical Information of China (English)

    Shun Lu; Yong-feng Yu

    2011-01-01

    Nowadays,advanced non-small cell lung cancer (NSCLC) is still an incurable disease.However,recent researches on maintenance therapy have led to considerable progress.Recently,pemetrexed and erlotinib have been approved for maintenance chemotherapy by both the U.S.Food and Drug Administration and European Medicines Agency.However,there are not adequate data to support the maintenance therapy as the standard treatment for advanced NSCLC and there has been no conclusive predictor of who will get benefit from maintenance chemotherapy and what type of maintenance,continuation or switch,is preferred.This article reviews the main studies on maintenance therapy of advanced NSCLC and discusses the results available to date.

  20. 14 CFR 43.17 - Maintenance, preventive maintenance, and alterations performed on U.S. aeronautical products by...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Maintenance, preventive maintenance, and... Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION § 43.17 Maintenance, preventive maintenance,...

  1. Machinery prognostics and prognosis oriented maintenance management

    CERN Document Server

    Yan, Jihong

    2014-01-01

    This book gives a complete presentatin of the basic essentials of machinery prognostics and prognosis oriented maintenance management, and takes a look at the cutting-edge discipline of intelligent failure prognosis technologies for condition-based maintenance.  Latest research results and application methods are introduced for signal processing, reliability moelling, deterioration evaluation, residual life prediction and maintenance-optimization as well as applications of these methods.

  2. PFP MICON maintenance manual. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Silvan, G.R.

    1995-01-25

    This manual covers the use of maintenance displays, maintenance procedures, system alarms and common system failures. This manual is intended to supplement the MICON maintenance training not replace it. It also assumes that the user is familiar with the normal operation of the MICON A/S system. The MICON system is a distributed control computer and, among other things, controls the HVAC system for the Plutonium Finishing Plant.

  3. Software Maintenance Management Evaluation and Continuous Improvement

    CERN Document Server

    April, Alain

    2008-01-01

    This book explores the domain of software maintenance management and provides road maps for improving software maintenance organizations. It describes full maintenance maturity models organized by levels 1, 2, and 3, which allow for benchmarking and continuous improvement paths. Goals for each key practice area are also provided, and the model presented is fully aligned with the architecture and framework of software development maturity models of CMMI and ISO 15504. It is complete with case studies, figures, tables, and graphs.

  4. Trends and Perspective in Industrial Maintenance Management

    DEFF Research Database (Denmark)

    Luxhoj, James T.; Thorsteinsson, Uffe; Riis, Jens Ove

    1997-01-01

    With increased global competition for manufacturing, many companies are seeking ways to gain competitative advanges with respect to cost, service, quality and on-time deliveries. The role that effective maintenance management plays in contributing to overall organizational productivity has received...... increased attention. Trends and perspective in industrial maintenance are presented. The result of benchmarking studies from Scandinavia and United States are also presented and compared. Case studies that examine maintenance methods, knowledge, organization and information systems in three Danish...

  5. Trends and Perspective in Industrial Maintenance Management

    DEFF Research Database (Denmark)

    Luxhoj, James T.; Thorsteinsson, Uffe; Riis, Jens Ove

    1997-01-01

    With increased global competition for manufacturing, many companies are seeking ways to gain competitative advanges with respect to cost, service, quality and on-time deliveries. The role that effective maintenance management plays in contributing to overall organizational productivity has received...... increased attention. Trends and perspective in industrial maintenance are presented. The result of benchmarking studies from Scandinavia and United States are also presented and compared. Case studies that examine maintenance methods, knowledge, organization and information systems in three Danish...

  6. Need telomere maintenance? Call 911.

    Science.gov (United States)

    Francia, Sofia; Weiss, Robert S; d'Adda di Fagagna, Fabrizio

    2007-01-17

    "Natura non facit saltum" (nature makes no leap) the Latins used to say, meaning that nature does not like discontinuities. Cells make no exception and indeed any discontinuity in the DNA double helix is promptly detected, triggering an alteration of cell proliferation and an attempt to repair. Yet, linear chromosomes bear DNA ends that are compatible with normal cell proliferation and they escape, under normal conditions, any repair. How telomeres, the chromosomes tips, achieve that is not fully understood. We recently observed that the Rad9/Hus1/Rad1 (911) complex, previously known for its functions in DNA metabolism and DNA damage responses, is constitutively associated with telomeres and plays an important role in their maintenance. Here, we summarize the available data and discuss the potential mechanisms of 911 action at telomeres.

  7. Anesthetic Maintenance of Thyroid Surgery

    Directory of Open Access Journals (Sweden)

    A. A. Negovsky

    2008-01-01

    Full Text Available Thyroid diseases are most common in endocrinology. Thyrotoxicosis induces dysfunction of virtually all organs and systems, the blood circulatory system being subjected to considerable changes. Cardiovascular diseases affect not only the quality of life in a patient, but significantly increase a risk from surgery that is the only radical treatment. For this reason, most authors consider thyrotoxicosis to be a contraindication to elective surgical intervention. At the same time it is known that drug compensation of thyrotoxicosis may be attained in not all patients. In this case, the results of treatment and a patient’s safety during surgery depend on the type and quality of anesthetic protection. The capabilities of anesthetic maintenance of thyroid surgery have recently expanded substantially. The paper deals with the preparation of patients with thyrotoxicosis for surgical intervention and the perioperative management of these patients. Key words: thyroid, toxic goiter, thyrotoxicosis, premedication, anesthetic mode, sevoflurane, xenon.

  8. Offshore system maintenance; Kurs Offshore

    Energy Technology Data Exchange (ETDEWEB)

    Jensen, D.

    2003-12-01

    Offshore wind parks require maintenance and servicing as other wind parks do. Various wharves are currently attempting to cope with this challenge. One example is the SWATH technology (Small Waterplane Area Twin Hull). Ships of this type are commonly used as pilot boats. They have very small bearing surfaces. [German] Offshore-Parks brauchen schwimmende Teams fuer Wartungs- und Servicearbeiten. Und je oefter die Anlagen trotz Wind und Wetter erreichbar sind, desto besser. Verschiedene Werften bereiten sich auf die Herausforderung vor. So z.B. das mit der SWATH-Technik (Small Waterplane Area Twin Hull) konstruierte Tenderschiffe haben sich als wetterfester Zubringer fuer Lotsen bewaehrt SWATH-Schiffe haben kaum noch Auflageflaechen. (orig.)

  9. Myths and realities of electronics maintenance.

    Science.gov (United States)

    Harris, Douglas H

    2008-06-01

    The author presents and discusses discoveries and developments contributing to enhanced electronics maintenance performance. This body of research is viewed from the vantage point of Nick Bond's 1970 Ely Award-winning article in Human Factors, "Some Persistent Myths About Military Electronics Maintenance." Bond identified a set of myths and summarized research that not only produced information and techniques leading to demonstrably improved maintenance performance but also exploded many unfounded beliefs that were commonly held before the research had been conducted and the findings disseminated. The period from 1964 through 1986, as reflected by publications in the journal, was a productive period of research that led to greater understanding of human factors in electronics maintenance and to numerous advances that contributed, ultimately, to more effective maintenance performance. Technological advances, combined with what we learned about maintenance performance, have substantially reduced the maintenance burden and enhanced the maintenance of electronic systems. Some of the principal lessons learned from this research on electronics maintenance apply to understanding the effects of equipment complexity, providing an optimal role for automation, designing more appropriate on-the-job training, and enhancing troubleshooting skills.

  10. Maintenance planning and organisation at Appin Colliery

    Energy Technology Data Exchange (ETDEWEB)

    Dawkins, G.; O`Brien, B. [Appin Colliery, Appin, NSW (Australia)

    1994-12-31

    At the modern Appin Colliery 2.5 million tonnes are produced per year by 390 employees from one longwall and four development units. The maintenance organisation has both mechanical and electrical departments. Recent BHP Collieries improvement initiatives have benefitted the maintenance organisation at Appin in many ways, particularly with senior management support, an effective maintenance business plan and documented programme. With accent on skills and teamwork, maintenance times, and therefore costs have been reduced. Heightened communication has led to more acute condition monitoring.

  11. Maintenance management at La Silla Paranal Observatory

    Science.gov (United States)

    Montano, Nelson

    2008-07-01

    From the beginning of the VLT project, the European Southern Observatory (ESO) considered the application of a competent maintenance strategy a fundamental aspect for future operations of the Paranal Observatory. For that purpose, a special maintenance philosophy was developed during the project stage and applied during the initial years of operations. The merging of the La Silla and Paranal Observatories in 2005 added a new managerial challenge to the regular operational requirements (high availability and reliability) which motivated ESO Management to develop a stronger strategy for the operations of the new merged Observatory. Part of the new strategy considered the creation of a dedicated department for the management of all maintenance activities, separating this support from the traditional scheme where the Engineering Department had the responsibility for the entire technical support to operations. In order to keep a competent level of maintenance operations for the new unified Observatory, the La Silla Paranal (LSP) Maintenance Department has been using a well known maintenance management model used in various industrial applications as a guide. Today the operations of the Maintenance Department are concentrated on developing and implementing practices regarding concepts such as Maintenance Tactics, Planning, Data Management, Performance Indicators and Material Management. In addition to that, advances related to Reliability Analysis been taken in order to reach a superior level of excellence. The results achieved by the LSP Maintenance Department are reflected in a reduced rate of functional failures, allowing uninterrupted operations of the Observation sites.

  12. Conceptualization of an intellectual maintenance management system

    Energy Technology Data Exchange (ETDEWEB)

    Suda, Kazunori; Yonekawa, Tsuyoshi; Yoshikawa, Shinji; Ozawa, Kenji [Power Reactor and Nuclear Fuel Development Corp., Oarai, Ibaraki (Japan). Oarai Engineering Center

    1997-04-01

    It is studied in many research institute to enhance availability and safety of nuclear power plants operation and maintenance. On this account, development of autonomous plants has been carried out to replace the role of operators with artificial intelligence and autonomous robots. We have been developing an intellectual maintenance management system since 1994. As the first step, concept of an intellectual maintenance management system was constructed. The intellectual maintenance managerial system is in charge of maintenance function of an autonomous plant. The intellectual maintenance managerial system has three functions which is monitoring state and judging abnormal machine and deciding maintenance plan by autonomy. This system has an important role of indication and communication of the result to an autonomous operation system and autonomous robot. In this examination, we adopted the distributed and cooperative system technique by multi-agent of AI technology and examined a method to enforce problem solving by cooperation of sensor and actuator. In this report, we examined trouble detection and troubleshooting evaluation and maintenance plan decision function by the distributed and cooperative system technology, the distributed and cooperative system communication-function that these information releases functions was taken on. In conceptualization of the intellectual maintenance managerial system, we clarified of major functions to constitute this system and relation between autonomous operation system and autonomous robots. We clarified the information exchange scheme between this system and an outside system furthermore. In future, we will prototype each function and inspect the total system. (author)

  13. Fleet Aviation Maintenance Organic Support (FAMOS) Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — Purpose:The Fleet Aviation Maintenance Organic Support (FAMOS) Laboratory at the Naval Air Warfare Center Aircraft Division, Lakehurst, NJ provides rapid engineering...

  14. Retention Rate in Methadone Maintenance Therapy

    Directory of Open Access Journals (Sweden)

    G Dastjerdi

    2010-08-01

    Full Text Available Introduction: Methadone maintenance therapy is a well-known approach to the treatment of drug use disorders and harm reduction. But the main challenge is retention rate in MMT Methods: Through simple random sampling, 155 addicts aged between 18-60 years who referred to drug addiction center of university and underwent MMT were followed for at least one year and up to two and half years. Results: Of the total, 3.9% female, 62% married, 37.4% workers and 27.1% were jobless. 80% had education level of less than diploma, 43.2% abused marijuana, 54.2% abused alcohol and 49.7% were living in rented houses. 60% referred to this center because of economical problems, 15.5% because of legal issues and 67.7% because of family pressure. 31.6% were opium and opium resin addicts, 60% were heroin addicts, 8.4% were crack addicts and 21.9% were IV abusers. 76.8% had at least one high risk behavior. Average dose of methadone was 86.5+35 mg/day. Mean survival time was 80 weeks. Relapse rate was 3.3% in the first month, 13.9% in three months, 23.2% in six months, 31.7% in first year and 41. 7% was a total relapse rate. Survival rate had a direct significant statistical relationship with the age, type of drug and method of use. Conclusion: According to the results of the present study that indicate a survival rate of 68.2% in a year and 58.3% after a year and also considering the results of other studies, we can conclude that MMP could be an effective method in the treatment of opiate drug disorders.

  15. Putting Lives on the Line: The Fast Rope Glove Challenge

    Science.gov (United States)

    2012-06-01

    steel wire core which makes them cut resistant and are coated with a nitrile palm that may provide some thermal protection;6 • The HexArmor GGT5, which...tactical glove form factor and is constructed out of Nomex with an aluminized Carbon-X palm covered with Keratan to help insulate the hand and provide

  16. Application of Artificial Neural Networks in Aircraft Maintenance, Repair and Overhaul Solutions

    CERN Document Server

    Paul, Soumitra; Jasani, Devashish; Dudhwewala, Rachit; Gowda, Vijay Bore; Nair, T R Gopalakrishnan

    2010-01-01

    This paper reviews application of Artificial Neural Networks in Aircraft Maintenance, Repair and Overhaul (MRO). MRO solutions are designed to facilitate the authoring and delivery of maintenance and repair information to the line maintenance technicians who need to improve aircraft repair turn around time, optimize the efficiency and consistency of fleet maintenance and ensure regulatory compliance. The technical complexity of aircraft systems, especially in avionics, has increased to the point at which it poses a significant troubleshotting and repair challenge for MRO personnel. As per the existing scenario, the MRO systems in place are inefficient. In this paper, we propose the centralization and integration of the MRO database to increase its efficiency. Moreover the implementation of Artificial Neural Networks in this system can rid the system of many of its deficiencies. In order to make the system more efficient we propose to integrate all the modules so as to reduce the efficacy of repair.

  17. An Intelligent Fleet Condition-Based Maintenance Decision Making Method Based on Multi-Agent

    Directory of Open Access Journals (Sweden)

    Bo Sun

    2012-01-01

    Full Text Available According to the demand for condition-based maintenance online decision making among a mission oriented fleet, an intelligent maintenance decision making method based on Multi-agent and heuristic rules is proposed. The process of condition-based maintenance within an aircraft fleet (each containing one or more Line Replaceable Modules based on multiple maintenance thresholds is analyzed. Then the process is abstracted into a Multi-Agent Model, a 2-layer model structure containing host negotiation and independent negotiation is established, and the heuristic rules applied to global and local maintenance decision making is proposed. Based on Contract Net Protocol and the heuristic rules, the maintenance decision making algorithm is put forward. Finally, a fleet consisting of 10 aircrafts on a 3-wave continuous mission is illustrated to verify this method. Simulation results indicate that this method can improve the availability of the fleet, meet mission demands, rationalize the utilization of support resources and provide support for online maintenance decision making among a mission oriented fleet.

  18. Coordinated preventive maintenance scheduling of GENCO and TRANSCO in restructured power systems

    Energy Technology Data Exchange (ETDEWEB)

    Geetha, T.; Swarup, K. Shanti [Department of Electrical Engineering, Indian Institute of Technology, Madras, Chennai 600036 (India)

    2009-11-15

    Preventive maintenance of generating units and lines, in a competitive electric energy environment is proposed. Inclusion of transmission constraints and forced outage rates, over a specified operational period is considered. For generator maintenance the objective of the ISO is to maintain adequate level of reliability throughout the operational period, for which Bender's decomposition technique is used. The objective of the GENCO is to maximize profit or to minimize loss in profit, for which transmission constrained price based unit commitment (TCPBUC), based on Lagrangian relaxation method is used. Bender's decomposition technique is used for line maintenance, with adequate level of reliability. A coordinating technique using penalty factors is incorporated to obtain convergence of the conflicting objectives. The transmission constraints are modeled using dc sensitivity factors. Detailed case studies of six-bus systems and IEEE RTS system are presented and discussed. (author)

  19. [Support in living].

    Science.gov (United States)

    Krebs, H

    1993-06-01

    "Lebenshilfe" (help in living) is of crucial importance for the organization of live of persons with a handicap. This help in living, training and social integration, however, requires an image of the handicapped person that unrestrictedly recognizes her right to live and to be a human being with a handicap. But todays hedonistic and preference-utilitarian social trends make other, selecting value judgements. This article comments on these dubious ethical positions critically and develops a paradigmatic, positive point of view. This statement is partly based on the principles of 2 self-help organizations of the same name ("Lebenshilfe für geistig Behinderte") in Germany and in Austria.

  20. Living with Hepatitis

    Science.gov (United States)

    ... HFI Summits Newsletter Our Stories Calendar of Events Advertise RESOURCES Health Savings Card Links Webinars YOUR LIVER Overview Adults Children & Adolescents Nutrition & Health Lifestyle RESEARCH DVDs Overview Live- ...

  1. Hand Hygiene Saves Lives

    Medline Plus

    Full Text Available ... Center (EOC) 101 Emergency Operations Center CDC Laboratory Science: Mission Critical Saving Lives, Protecting People Environmental Health CDC Tracking Network Health Begins at Home ...

  2. Hand Hygiene Saves Lives

    Medline Plus

    Full Text Available ... Center (EOC) 101 Emergency Operations Center CDC Laboratory Science: Mission Critical Saving Lives, Protecting People Environmental Health CDC Tracking Network Health Begins at Home Smoke- ...

  3. Open software architecture for east articulated maintenance arm

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Jing, E-mail: wujing@ipp.ac.cn [Institute of Plasma Physics Chinese Academy of Sciences, 350 Shushanhu Rd Hefei Anhui (China); Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland); Wu, Huapeng [Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland); Song, Yuntao [Institute of Plasma Physics Chinese Academy of Sciences, 350 Shushanhu Rd Hefei Anhui (China); Li, Ming [Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland); Yang, Yang [Institute of Plasma Physics Chinese Academy of Sciences, 350 Shushanhu Rd Hefei Anhui (China); Alcina, Daniel A.M. [Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland)

    2016-11-01

    Highlights: • A software requirement of serial-articulated robot for EAST assembly and maintains is presented. • A open software architecture of the robot is developed. • A component-based model distribution system with real-time communication of the robot is constructed. - Abstract: For the inside inspection and the maintenance of vacuum vessel in the EAST, an articulated maintenance arm is developed. In this article, an open software architecture developed for the EAST articulated maintenance arm (EAMA) is described, which offers a robust and proper performance and easy-going experience based on standard open robotic platform OROCOS. The paper presents a component-based model software architecture using multi-layer structure: end layer, up layer, middle, and down layer. In the end layer the components are defined off-line in the task planner manner. The components in up layer complete the function of trajectory plan. The CORBA, as a communication framework, is adopted to exchange the data between the distributed components. The contributors use Real-Time Workshop from the MATLAB/Simulink to generate the components in the middle layer. Real-time Toolkit guarantees control applications running in the hard real-time mode. Ethernets and the CAN bus are used for data transfer in the down layer, where the components implement the hardware functions. The distributed architecture of control system associates each processing node with each joint, which is mapped to a component with all functioning features of the framework.

  4. 14 CFR 121.375 - Maintenance and preventive maintenance training program.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance and preventive maintenance training program. 121.375 Section 121.375 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... OPERATIONS OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Maintenance,...

  5. 14 CFR 125.245 - Organization required to perform maintenance, preventive maintenance, and alteration.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Organization required to perform maintenance, preventive maintenance, and alteration. 125.245 Section 125.245 Aeronautics and Space FEDERAL... GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Maintenance § 125.245 Organization required to perform...

  6. A Study on Maintenance Management and Maintenance Decision-Making Methods

    Institute of Scientific and Technical Information of China (English)

    ZHAO Song-zheng; XIAO Wei

    2004-01-01

    By comparing the advantages and disadvantages of the main popular maintenance modes,this paper analyses the relationship between maintenance modes, and gives a model of maintenance decision-making. The model can be used in enterprises to minimize life cycle cost (LCC).

  7. Relationship Maintenance on Facebook: Development of a Measure, Relationship to General Maintenance, and Relationship Satisfaction

    Science.gov (United States)

    Dainton, Marianne

    2013-01-01

    Previous research indicates that the primary reason college students use Facebook is for relationship maintenance. The present study sought to determine the relationship between Facebook maintenance and general maintenance efforts in college student romantic relationships, as well as the impacts of such behaviors on the relationship. Survey data…

  8. Managing Highway Maintenance: Maintenance Management--by Objectives, Unit 10, Level 2.

    Science.gov (United States)

    Federal Highway Administration (DOT), Washington, DC. Offices of Research and Development.

    Part of the series "Managing Highway Maintenance," the unit deals with management by objectives--its definition, how it works, and necessary steps for application. It is designed for maintenance supervisors who are familiar with maintenance management systems. The format is a programed, self-instructional approach in which questions are…

  9. Managing Highway Maintenance: Standards for Maintenance Work, Part 1, Unit 8, Level 2.

    Science.gov (United States)

    Federal Highway Administration (DOT), Washington, DC. Offices of Research and Development.

    Part of the series "Managing Highway Maintenance," the unit is about maintenance standards and is designed for superintendents and senior foremen who are responsible for scheduling and controlling routine maintenance. It describes different kinds of standards, why and how standards are developed, and how standards are to be used and…

  10. Towards Informed Maintenance Decision Making: Guiding the Application of Advanced Maintenance Analyses

    NARCIS (Netherlands)

    Tiddens, W.W.; Braaksma, A.J.J.; Tinga, T.

    2017-01-01

    Advanced maintenance techniques (AMTs) are practices that can help practitioners to make better-informed maintenance decisions, such as ensuring just-in-time maintenance, corporate business planning or lifetime extension of physical assets. These techniques take the current, but preferably also the

  11. The influence of condition-based maintenance on workforce planning and maintenance scheduling

    NARCIS (Netherlands)

    Koochaki, Javid; Bokhorst, Jos A. C.; Wortmann, Hans; Klingenberg, Warse

    2013-01-01

    Condition-based maintenance (CBM) is generally considered an attractive maintenance policy for a single component: it uses the operating condition of the component to predict a failure event and therefore tries to avoid any unplanned downtime and unnecessary maintenance activities. However,

  12. Relationship Maintenance on Facebook: Development of a Measure, Relationship to General Maintenance, and Relationship Satisfaction

    Science.gov (United States)

    Dainton, Marianne

    2013-01-01

    Previous research indicates that the primary reason college students use Facebook is for relationship maintenance. The present study sought to determine the relationship between Facebook maintenance and general maintenance efforts in college student romantic relationships, as well as the impacts of such behaviors on the relationship. Survey data…

  13. 14 CFR 91.1433 - CAMP: Maintenance and preventive maintenance training program.

    Science.gov (United States)

    2010-01-01

    ... maintenance training program. Each program manager who maintains program aircraft under a CAMP or a person... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false CAMP: Maintenance and preventive maintenance training program. 91.1433 Section 91.1433 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION...

  14. Condition-based maintenance for complex systems : Coordinating maintenance and logistics planning for the process industries

    NARCIS (Netherlands)

    Olde Keizer, Minou Catharina Anselma

    2016-01-01

    Maintenance planning in the process industries is extremely complex for various reasons. Plants often run nonstop, allowing little time for performing preventive maintenance. Failures should be prevented, however, as they can lead to system downtime and high losses of revenue. Corrective maintenance

  15. Maintenance of Electrical Services: Maintenance and Renewal in Educational Buildings. Building Bulletin 76.

    Science.gov (United States)

    Department for Education and Employment, London (England). Architects and Building Branch.

    This document provides guidance on the overall electrical services and maintenance strategy in educational facilities, the individual components of which are considered in the following sections: record documentation and systems; inspection and testing; condition appraisal; maintenance requirements; and maintenance works procedures. Other sections…

  16. Maintenance therapies for non small cell lung cancer

    Directory of Open Access Journals (Sweden)

    Normand eBlais

    2014-08-01

    Full Text Available Treatment of lung cancer had evolved during the last decade with the introduction of new chemotherapeutic regimens and targeted therapies. However, the maximum benefit reached after first line therapy is limited by the cumulative toxicity of platinum drugs and the subsequent deterioration in performance status in a high percentage of patients who end up receiving not more than one line of treatment. Maintenance therapy had been introduced and evaluated in many large randomized trials showing a delay in tumour progression and an improvement in overall survival. This effective strategy should be taken into account when discussing the initial treatment plan and tailored according to the preferences of both patients and physicians.

  17. Stick with a School Maintenance Plan

    Science.gov (United States)

    Kennedy, Mike

    2012-01-01

    The U.S. Department of Education's "Planning Guide for Maintaining School Facilities" states that a sound facilities maintenance plan serves as evidence that school facilities are, and will be, cared for appropriately. On the other hand, negligent facilities maintenance planning can cause real problems. Budget restraints and cuts in areas not…

  18. Quantitative techniques for medical equipment maintenance management

    NARCIS (Netherlands)

    Ben Houria, Zeineb; Masmoudi, Malek; Al Hanbali, Ahmad; Khatrouch, Ikram; Masmoudi, Faouzi

    2016-01-01

    The maintenance department in a hospital is responsible for ensuring the safety of medical equipment and their availability while keeping the operation costs minimal. The selection of the best maintenance strategy is a key decision to reduce the equipment downtime, increase the availability, and bri

  19. Simulation based comparison of predictive maintenance policies

    NARCIS (Netherlands)

    Tinga, T.; Janssen, R.H.P.; Steenbergen, R.; Van Gelder, P.

    2013-01-01

    When an asset is operated in variable conditions, its operational efficiency can be improved significantly when the maintenance is performed in a dynamic manner. This means that variations in usage and operating environment are taken into account when deciding on the length of the maintenance interv

  20. Standardized Curriculum for General Industrial Maintenance Trades.

    Science.gov (United States)

    Mississippi State Dept. of Education, Jackson. Office of Vocational, Technical and Adult Education.

    Standardized vocational education course titles and core contents for two courses in Mississippi are provided: general industrial maintenance trades I and II. The first course contains the following units: (1) orientation and leadership activities; (2) safety; (3) blueprint reading; (4) oxyacetylene cutting; (5) preventative maintenance; (6)…

  1. 14 CFR 91.417 - Maintenance records.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Maintenance records. 91.417 Section 91.417 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR TRAFFIC AND GENERAL OPERATING RULES GENERAL OPERATING AND FLIGHT RULES Maintenance, Preventive...

  2. 14 CFR 91.405 - Maintenance required.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Maintenance required. 91.405 Section 91.405 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR TRAFFIC AND GENERAL OPERATING RULES GENERAL OPERATING AND FLIGHT RULES Maintenance, Preventive...

  3. 40 CFR 86.007-25 - Maintenance.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Maintenance. 86.007-25 Section 86.007-25 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED...-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.007-25 Maintenance. Section 86.007-25 includes...

  4. Stick with a School Maintenance Plan

    Science.gov (United States)

    Kennedy, Mike

    2012-01-01

    The U.S. Department of Education's "Planning Guide for Maintaining School Facilities" states that a sound facilities maintenance plan serves as evidence that school facilities are, and will be, cared for appropriately. On the other hand, negligent facilities maintenance planning can cause real problems. Budget restraints and cuts in…

  5. 40 CFR 86.098-25 - Maintenance.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Maintenance. 86.098-25 Section 86.098-25 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED...-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.098-25 Maintenance. (a) (b)(1)-(2) (3)(i)-(v)...

  6. 30 CFR 56.9313 - Roadway maintenance.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Roadway maintenance. 56.9313 Section 56.9313 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... § 56.9313 Roadway maintenance. Water, debris, or spilled material on roadways which creates hazards...

  7. 7 CFR 1435.104 - Loan maintenance.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Loan maintenance. 1435.104 Section 1435.104 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT... Loan maintenance. (a) All processors receiving loans shall: (1) Abide by the terms and conditions...

  8. 30 CFR 57.9313 - Roadway maintenance.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Roadway maintenance. 57.9313 Section 57.9313 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... § 57.9313 Roadway maintenance. Water, debris, or spilled material on roadways which creates hazards...

  9. 49 CFR 399.211 - Maintenance.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false Maintenance. 399.211 Section 399.211 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL MOTOR CARRIER SAFETY... STANDARDS Step, Handhold, and Deck Requirements for Commercial Motor Vehicles § 399.211 Maintenance....

  10. 21 CFR 211.58 - Maintenance.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 4 2010-04-01 2010-04-01 false Maintenance. 211.58 Section 211.58 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS: GENERAL... Maintenance. Any building used in the manufacture, processing, packing, or holding of a drug product shall...

  11. 12 CFR 347.205 - Record maintenance.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Record maintenance. 347.205 Section 347.205 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.205 Record maintenance. The records of each insured branch shall...

  12. 47 CFR 101.1109 - Records maintenance.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Records maintenance. 101.1109 Section 101.1109 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Competitive Bidding Procedures for LMDS § 101.1109 Records maintenance. All winning...

  13. 7 CFR 772.5 - Security maintenance.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 7 2010-01-01 2010-01-01 false Security maintenance. 772.5 Section 772.5 Agriculture Regulations of the Department of Agriculture (Continued) FARM SERVICE AGENCY, DEPARTMENT OF AGRICULTURE SPECIAL PROGRAMS SERVICING MINOR PROGRAM LOANS § 772.5 Security maintenance. (a) General. Borrowers...

  14. 40 CFR 141.33 - Record maintenance.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Record maintenance. 141.33 Section 141.33 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) WATER PROGRAMS (CONTINUED) NATIONAL PRIMARY DRINKING WATER REGULATIONS Reporting and Recordkeeping § 141.33 Record maintenance....

  15. 23 CFR 660.115 - Maintenance.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Maintenance. 660.115 Section 660.115 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS SPECIAL PROGRAMS (DIRECT FEDERAL) Forest Highways § 660.115 Maintenance. The cooperator having jurisdiction over a FH...

  16. Information Technology Applications to Maintenance Management

    Institute of Scientific and Technical Information of China (English)

    Abdul Raouf S.I.

    2003-01-01

    Application of IT (Information Technology) to equipment management have not been ade-quately made. A system using Benefit Evaluation Ladder is described for evaluating the need for IT ap-plications to maintenance management. A systematic evaluation scheme for Computerized Maintenance Management System (CMMS) is presented.

  17. Planning for Recall of Maintenance Manpower

    Science.gov (United States)

    2015-09-01

    time between maintenance NTB nominal-the-best OSD/RA Office of the Assistant Secretary of Defense for Reserve Affairs RAM reliability , availability...RECALL OF MAINTENANCE MANPOWER by Yang Siang Kelvin Poh September 2015 Thesis Advisor: Gary O. Langford Second Reader: Mark Stevens THIS...

  18. Simulation based comparison of predictive maintenance policies

    NARCIS (Netherlands)

    Tinga, Tiedo; Janssen, R.H.P.; Steenbergen, R.; van Gelder, P.

    2013-01-01

    When an asset is operated in variable conditions, its operational efficiency can be improved significantly when the maintenance is performed in a dynamic manner. This means that variations in usage and operating environment are taken into account when deciding on the length of the maintenance

  19. Product Modelling for Model-Based Maintenance

    NARCIS (Netherlands)

    Houten, van F.J.A.M.; Tomiyama, T.; Salomons, O.W.

    1998-01-01

    The paper describes the fundamental concepts of maintenance and the role that information technology can play in the support of maintenance activities. Function-Behaviour-State modelling is used to describe faults and deterioration of mechanisms in terms of user perception and measurable quantities.

  20. Principles of machine operation and maintenance

    CERN Document Server

    Jeffrey, Dick

    2013-01-01

    This book explains how rotating machinery works, and the role of the maintenance engineer in ensuring its proper operation. Stress is laid on the need for the trainee engineer to develop skills in diagnosis and troubleshooting as well as practicalexpertise in maintenance procedures.