Science.gov

Sample records for assistance supply experiment

  1. Two Computer-Assisted Experiments

    ERIC Educational Resources Information Center

    Kraftmakher, Yaakov

    2013-01-01

    Two computer-assisted experiments are described: (i) determination of the speed of ultrasound waves in water and (ii) measurement of the thermal expansion of an aluminum-based alloy. A new data-acquisition system developed by PASCO scientific is used. In both experiments, the "Keep" mode of recording data is employed: the data are…

  2. Neutrino horn power supply operational experience

    SciTech Connect

    Stillman, P.; Sandberg, J.; Carroll, A.S.; Leonhardt, W.; Monaghan, R.; Pearson, C.; Pendzich, A.; Ryan, G.; Sims, W.P.; Smith, G.A.

    1987-01-01

    The operational experiences required to run the 300 kA pulsed power supply at Brookhaven National Laboratory are given. Various interlocks and monitoring circuits are described and the impact on system reliability are discussed. The initial conditioning process of the power supply during startup is described.

  3. 42 CFR 405.2415 - Services and supplies incident to nurse practitioner and physician assistant services.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...) Furnished as an incidental, although integral part of professional services furnished by a nurse... 42 Public Health 2 2010-10-01 2010-10-01 false Services and supplies incident to nurse... Services and supplies incident to nurse practitioner and physician assistant services. (a) Services...

  4. 41 CFR 101-25.114 - Supply management surveys and assistance.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 41 Public Contracts and Property Management 2 2013-07-01 2012-07-01 true Supply management surveys and assistance. 101-25.114 Section 101-25.114 Public Contracts and Property Management Federal Property Management Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT...

  5. 41 CFR 101-25.114 - Supply management surveys and assistance.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 41 Public Contracts and Property Management 2 2014-07-01 2012-07-01 true Supply management surveys and assistance. 101-25.114 Section 101-25.114 Public Contracts and Property Management Federal Property Management Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT...

  6. 41 CFR 101-25.114 - Supply management surveys and assistance.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 41 Public Contracts and Property Management 2 2011-07-01 2007-07-01 true Supply management surveys and assistance. 101-25.114 Section 101-25.114 Public Contracts and Property Management Federal Property Management Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT...

  7. 41 CFR 101-25.114 - Supply management surveys and assistance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Supply management surveys and assistance. 101-25.114 Section 101-25.114 Public Contracts and Property Management Federal Property Management Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT...

  8. 41 CFR 101-25.114 - Supply management surveys and assistance.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 41 Public Contracts and Property Management 2 2012-07-01 2012-07-01 false Supply management surveys and assistance. 101-25.114 Section 101-25.114 Public Contracts and Property Management Federal Property Management Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT...

  9. The personal assistance workforce: trends in supply and demand.

    PubMed

    Kaye, H Stephen; Chapman, Susan; Newcomer, Robert J; Harrington, Charlene

    2006-01-01

    The workforce providing noninstitutional personal assistance and home health services tripled between 1989 and 2004, according to U.S. survey data, growing at a much faster rate than the population needing such services. During the same period, Medicaid spending for such services increased dramatically, while both workforce size and spending for similar services in institutional settings remained relatively stable. Low wage levels for personal assistance workers, which have fallen behind those of comparable occupations; scarce health benefits; and high job turnover rates highlight the need for greater attention to ensuring a stable and well-trained workforce to meet growing demand. PMID:16835193

  10. Cryogenic Supply for the Gerda Experiment

    NASA Astrophysics Data System (ADS)

    Haberstroh, Ch.

    2008-03-01

    In the GERDA experiment (GERmanium Detector Array for the search of neutrinoless double beta decay of 76Ge) germanium diodes are suspended in a superinsulated cryostat filled with 70 m3 of liquid argon. The cold medium is required since the diodes have to be operated at low temperatures, and furthermore for shielding against background radiation. For the same reason the whole experiment will be placed in the underground laboratories in the Gran Sasso mountains, Italy. In order to avoid any detrimental perturbation inside the dewar vessel, the liquid-argon (LAr) inventory in the main tank will be kept in a subcooled state at a working pressure of 0.12 MPa absolute at the surface. At the TU Dresden an appropriate cryogenic arrangement was designed to match these requirements. Liquid nitrogen (LN2) is used as a cooling fluid. Special care was taken to cope with the narrow temperature span between the LAr boiling temperature and triple point. In the proposed solution a subcooler located close to the cryostat neck provides a stable LAr convection inside the main tank. The working pressure is adjusted with a controlled, slightly elevated temperature level at the liquid-vapor interface.

  11. Experiments with an EVA Assistant Robot

    NASA Technical Reports Server (NTRS)

    Burridge, Robert R.; Graham, Jeffrey; Shillcutt, Kim; Hirsh, Robert; Kortenkamp, David

    2003-01-01

    Human missions to the Moon or Mars will likely be accompanied by many useful robots that will assist in all aspects of the mission, from construction to maintenance to surface exploration. Such robots might scout terrain, carry tools, take pictures, curate samples, or provide status information during a traverse. At NASA/JSC, the EVA Robotic Assistant (ERA) project has developed a robot testbed for exploring the issues of astronaut-robot interaction. Together with JSC's Advanced Spacesuit Lab, the ERA team has been developing robot capabilities and testing them with space-suited test subjects at planetary surface analog sites. In this paper, we describe the current state of the ERA testbed and two weeks of remote field tests in Arizona in September 2002. A number of teams with a broad range of interests participated in these experiments to explore different aspects of what must be done to develop a program for robotic assistance to surface EVA. Technologies explored in the field experiments included a fuel cell, new mobility platform and manipulator, novel software and communications infrastructure for multi-agent modeling and planning, a mobile science lab, an "InfoPak" for monitoring the spacesuit, and delayed satellite communication to a remote operations team. In this paper, we will describe this latest round of field tests in detail.

  12. Tokamak Physics Experiment (TPX) power supply design and development

    SciTech Connect

    Neumeyer, C.; Bronner, G.; Lu, E.; Ramakrishnan, S.

    1995-04-01

    The Tokamak Physics Experiment (TPX) is an advanced tokamak project aimed at the production of quasi-steady state plasmas with advanced shape, heating, and particle control. TPX is to be built at the Princeton Plasma Physics Laboratory (PPPL) using many of the facilities from the Tokamak Fusion Test Reactor (TFTR). TPX will be the first tokamak to utilize superconducting (SC) magnets in both the toroidal field (TF) and poloidal field (PF) systems. This new feature requires a departure from the traditional tokamak power supply schemes. This paper describes the plan for the adaptation of the PPPL/FTR power system facilities to supply TPX. Five major areas are addressed, namely the AC power system, the TF, PF and Fast Plasma Position Control (FPPC) power supplies, and quench protection for the TF and PF systems. Special emphasis is placed on the development of new power supply and protection schemes.

  13. The supply of pharmaceuticals in humanitarian assistance missions: implications for military operations.

    PubMed

    Mahmood, Maysaa; Riley, Kevin; Bennett, David; Anderson, Warner

    2011-01-01

    In this article, we provide an overview of key international guidelines governing the supply of pharmaceuticals during disasters and complex emergencies. We review the World Health Organization?s guidelines on pharmaceutical supply chain management and highlight their relevance for military humanitarian assistance missions. Given the important role of pharmaceuticals in addressing population health needs during humanitarian emergencies, a good understanding of how pharmaceuticals are supplied at the local level in different countries can help military health personnel identify the most appropriate supply options. Familiarity with international guidelines involved in cross-border movement of pharmaceuticals can improve the ability of military personnel to communicate more effectively with other actors involved in humanitarian and development spheres. Enhancing the knowledge base available to military personnel in terms of existing supply models and funding procedures can improve the effectiveness of humanitarian military operations and invite policy changes necessary to establish more flexible acquisition and funding regulations. PMID:22113725

  14. The supply of pharmaceuticals in humanitarian assistance missions: implications for military operations.

    PubMed

    Mahmood, Maysaa; Riley, Kevin; Bennett, David; Anderson, Warner

    2011-08-01

    In this article, we provide an overview of key international guidelines governing the supply of pharmaceuticals during disasters and complex emergencies. We review the World Health Organization's guidelines on pharmaceutical supply chain management and highlight their relevance for military humanitarian assistance missions. Given the important role of pharmaceuticals in addressing population health needs during humanitarian emergencies, a good understanding of how pharmaceuticals are supplied at the local level in different countries can help military health personnel identify the most appropriate supply options. Familiarity with international guidelines involved in cross-border movement of pharmaceuticals can improve the ability of military personnel to communicate more effectively with other actors involved in humanitarian and development spheres. Enhancing the knowledge base available to military personnel in terms of existing supply models and funding procedures can improve the effectiveness of humanitarian military operations and invite policy changes necessary to establish more flexible acquisition and funding regulations. PMID:21882772

  15. Power supplies and quench protection for the Tokamak Physics Experiment

    SciTech Connect

    Neumeyer, C.L.

    1994-07-01

    The Tokamak Physics Experiment (TPX) is an advanced tokamak project aimed at the production of quasi-steady state plasmas with advanced shape, heating, and particle control. TPX is to be built at the Princeton Plasma Physics Laboratory (PPPL) using many of the facilities from the Tokamak Fusion Test Reactor (TFTR). First plasma is scheduled for the year 2000. TPX will be the first tokamak to utilize superconducting (SC) magnets in both the toroidal field (TF) and poloidal field (PF) systems. This is a new feature which requires not only a departure from the traditional tokamak power supply schemes but also that ultra-reliable quench protection devices be used to rapidly discharge the stored energy from the magnets in the event of a quench. This paper describes the plan and basis for the adaptation and augmentation of the PPPL/TFTR power system facilities to supply TPX. Following a description of the basic operational requirements, four major areas are addressed, namely the AC power system, the TF power supply, the PF power supply, and quench protection for the TF and PF systems.

  16. 43 CFR 404.56 - If a financial assistance agreement is entered into for a rural water supply project that...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... entered into for a rural water supply project that benefits more than one Indian tribe, is the approval of... Lands BUREAU OF RECLAMATION, DEPARTMENT OF THE INTERIOR RECLAMATION RURAL WATER SUPPLY PROGRAM Miscellaneous § 404.56 If a financial assistance agreement is entered into for a rural water supply project...

  17. Wearable air supply for pneumatic artificial hearts and ventricular assist devices.

    PubMed

    Sipin, A J; Fabrey, W J; Smith, S H; Doussourd, J D; Olsen, D B

    1992-08-01

    An experimental wearable air supply for pneumatic artificial hearts and ventricular assist devices has been built and tested. The unit eliminates the need for tethering to a large, stationery driver. The miniaturized air supply is designed for ambulatory patients with implanted pulsatile pneumatic total artificial hearts (TAH) or pneumatic left-ventricular assist devices (LVAD), to permit mobility in clinical and home settings. The device has major short-term utility as a supply for pneumatic TAH or VAD bridges in patients awaiting heart transplants. The system design for the wearable driver includes a novel, fast rotary compressor, driven by a brushless direct current (DC) motor to supply air to the ventricle through an electromagnetically actuated directional valve, all controlled by a microcomputer. Stroke volume from 0 to 200 cc; pulse rate from 60 to 160 bpm, and duty cycle from 33% to 50% are selected on a keyboard, and the selected or measured parameters can be shown on a liquid crystal display. For control of delivery from a single ventricular assist device, stroke volume is controlled by variation of compressor speed. In the wearable air supply for a TAH, a single compressor drives both ventricles alternately through a double-acting directional valve. Air volume delivered to the left ventricle is adjusted by variation of compressor speed, and air volume to the right ventricle by variation of ejection time. The effect on blood flow rate of the lower impedance to the right ventricle is compensated by provision of a two-stage compressor, in which a single stage drives the right ventricle, and both stages connected in parallel drive the left ventricle. The overall dimensions of the prototype air supply for driving either a TAH or LVAD are 4.5 by 7.8 by 4.5 inches, including an emergency battery with a duration of 15 to 30 min depending on load. The weight is presently 5.5 lb, but this will be reduced in a production design and for a dedicated LVAD air supply

  18. The supply voltage apparatus of the CUORE experiment

    NASA Astrophysics Data System (ADS)

    Arnaboldi, C.; Baú, A.; Carniti, P.; Cassina, L.; Giachero, A.; Gotti, C.; Maino, M.; Passerini, A.; Pessina, G.

    2016-07-01

    The Electronics system of experiments for the study of rare decays, such as the neutrino-less double beta decay, must be very stable over very long expected runs. We introduce our solution for the power supply of such an experiment, CUORE. In this case the power supply chain consists of a series of ACDCs, followed by DCDCs and then Linear Regulators. We emphasize here our approach to the DCDC regulation system that was designed with a complete rejection of the switching noise, across 100 MHz bandwidth. In the experimental layout the DCDC will be located far from the very front-end, with long connecting cables (10 m). We introduced our very simple and safe solution to prevent huge over-voltages, due to the energy stored in the inductance of the cables, generated after the release of accidental short circuits, so avoiding destructive effects. Some micro-controllers are present on every board and take care of the DCDC operation. These micro-controllers are managed from the control room, via CAN BUS protocol coupled via optical fibres. CUORE is an array of 1000 cryogenic detectors that will need 30 of our DCDCs.

  19. 43 CFR 404.12 - Can Reclamation provide assistance with the construction of a rural water supply project under...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 1 2011-10-01 2011-10-01 false Can Reclamation provide assistance with the construction of a rural water supply project under this program? 404.12 Section 404.12 Public Lands: Interior Regulations Relating to Public Lands BUREAU OF RECLAMATION, DEPARTMENT OF THE INTERIOR RECLAMATION RURAL WATER SUPPLY PROGRAM Overview...

  20. 43 CFR 404.12 - Can Reclamation provide assistance with the construction of a rural water supply project under...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false Can Reclamation provide assistance with the construction of a rural water supply project under this program? 404.12 Section 404.12 Public Lands: Interior Regulations Relating to Public Lands BUREAU OF RECLAMATION, DEPARTMENT OF THE INTERIOR RECLAMATION RURAL WATER SUPPLY PROGRAM Overview...

  1. Lecture capturing assisted teaching and learning experience

    NASA Astrophysics Data System (ADS)

    Chen, Li

    2015-03-01

    When it comes to learning, a deep understanding of the material and a broadband of knowledge are equally important. However, provided limited amount of semester time, instructors often find themselves struggling to reach both aspects at the same time and are often forced to make a choice between the two. On one hand, we would like to spend much time to train our students, with demonstrations, step by step guidance and practice, to develop strong critical thinking skills and problem-solving skills. On the other hand, we also would like to cover a wide range of content topics to broaden our students' understanding. In this presentation, we propose a working scheme that may assist to achieve these two goals at the same time without sacrificing either one. With the help of recorded and pre-recorded lectures and other class materials, it allows instructors to spend more class time to focus on developing critical thinking skills and problem-solving skills, and to apply and connect principle knowledge with real life phenomena. It also allows our students to digest the material at a pace they are comfortable with by watching the recorded lectures over and over. Students now have something as a backup to refer to when they have random mistakes and/or missing spots on their notes, and hence take more ownership of their learning. Advanced technology have offered flexibility of how/when the content can be delivered, and have been assisting towards better teaching and learning strategies.

  2. Medical supply on contingency military operations: experience from Operation GRITROCK.

    PubMed

    Robinson, J P; Reeves, P

    2015-01-01

    Medical supply during military operations has the ability to affect the efficacy of the operation being undertaken, either negatively or positively. An appropriately-managed maritime platform with a robust medical supply chain during transit and on arrival in theatre is the main aim. A secure supply chain will reduce any implications that logistics may have with regard to capability, and negate the effects of deficiencies of short shelf life items occurring over time and during use in high tempo operations. PMID:26867409

  3. Cryogenic supply for accelerators and experiments at FAIR

    SciTech Connect

    Kauschke, M.; Xiang, Y.; Schroeder, C. H.; Streicher, B.; Kollmus, H.

    2014-01-29

    In the coming years the new international accelerator facility FAIR (Facility for Antiproton and Ion Research), one of the largest research projects worldwide, will be built at GSI. In the final construction FAIR consists of synchrotrons and storage rings with up to 1,100 meters in circumference, two linear accelerators and about 3.5 kilometers beam transfer lines. The existing GSI accelerators serve as pre-accelerators. Partly the new machines will consist of superconducting magnets and therefore require a reliable supply with liquid helium. As the requirements for the magnets is depending on the machine and have a high variety, the cooling system is different for each machine; two phase cooling, forced flow cooling and bath cooling respectively. In addition the cold mass of the individual magnets varies between less than 1t up to 80t and some magnets will cause a dynamic heat load due to ramping that is higher than the static loads. The full cryogenic system will be operated above atmospheric pressure. The refrigeration and liquefaction power will be provided by two main cryogenic plants of 8 and 25 kW at 4K and two smaller plants next to the experiments.

  4. Teaching Highs and Lows: Exploring University Teaching Assistants' Experiences

    ERIC Educational Resources Information Center

    Green, Jennifer L.

    2010-01-01

    Recent reforms in statistics education have initiated the need to prepare graduate teaching assistants (TAs) for these changes. A focus group study explored the experiences and perceptions of University of Nebraska-Lincoln TAs. The results reinforced the idea that content, pedagogy, and technology are central aspects for teaching an introductory…

  5. The Graduate Teaching Assistant (GTA): Lessons from North American Experience

    ERIC Educational Resources Information Center

    Park, Chris

    2004-01-01

    The employment of graduate students on a part-time basis to help with the teaching of undergraduates is growing in the UK and many higher education institutions are confronted with challenges about how best to do this. UK institutions have much to learn from North American experience of appointing graduate teaching assistants (GTAs), and this…

  6. The role of the assistant during robot-assisted partial nephrectomy: does experience matter?

    PubMed

    Potretzke, Aaron M; Knight, Brent A; Brockman, John A; Vetter, Joel; Figenshau, Robert S; Bhayani, Sam B; Benway, Brian M

    2016-06-01

    The objective of this study was to evaluate surgical outcomes with respect to the experience level of the bedside assistant during robot-assisted partial nephrectomy. A retrospective review was conducted of a prospectively maintained database of 414 consecutive robot-assisted laparoscopic partial nephrectomies performed by experienced robotic surgeons at our institution from April 2011 to September 2014. A senior-level assistant was defined as a resident in his or her post-graduate year (PGY) 4 or 5, or a fellow. Junior-level assistants were considered to be PGY-2, PGY-3, or a nurse first assistant. Multivariate analyses were performed using linear, Poisson, and logistic regression models. There were 115 junior-level cases and 299 senior-level cases. On univariate analysis, the experience level of the assistant had no impact on operative time (168 for junior level vs. 163 min for senior level, p = 0.656). Likewise, there were no differences between the junior- and senior-level groups with regard to warm ischemia time (21.3 vs. 20.9 min, p = 0.843), negative margin status (111/115 (96.5 %) vs. 280/299 (93.6 %), p = 0.340), or postoperative complications (17/115 (14.8 %) vs. 35/299 (11.7 %), p = 0.408). After multivariate analysis, operative time was associated with increased body mass index and tumor size (both p < 0.001), but not with resident experience level (p = 0.051). Estimated blood loss and postoperative complications were also not associated with the PGY of the assistant (p = 0.488 and p = 0.916, respectively). Despite common concern, the PGY status of a physician trainee serving as the bedside assistant does not appear to influence the outcomes of robot-assisted partial nephrectomy at a high-volume center. PMID:27039192

  7. Assisted Living and Residential Care in Oregon: Two Decades of State Policy, Supply, and Medicaid Participation Trends

    ERIC Educational Resources Information Center

    Hernandez, Mauro

    2007-01-01

    Purpose: The study describes Oregon state policy and supply developments for licensed long-term-care settings, particularly apartment-style assisted living facilities and more traditional residential care facilities. Design and Methods: Data came from a variety of sources, including state agency administrative records, other secondary data…

  8. 43 CFR 404.12 - Can Reclamation provide assistance with the construction of a rural water supply project under...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Can Reclamation provide assistance with the construction of a rural water supply project under this program? 404.12 Section 404.12 Public Lands: Interior Regulations Relating to Public Lands BUREAU OF RECLAMATION, DEPARTMENT OF THE...

  9. 43 CFR 404.56 - If a financial assistance agreement is entered into for a rural water supply project that...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false If a financial assistance agreement is entered into for a rural water supply project that benefits more than one Indian tribe, is the approval of each Indian tribe required? 404.56 Section 404.56 Public Lands: Interior Regulations Relating to Public Lands BUREAU OF RECLAMATION, DEPARTMENT...

  10. 76 FR 31356 - Notice of Proposed Information Collection for Public Comment; Technical Assistance Experience...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-31

    ... Experience, Expertise, and Awards Received Matrices AGENCY: Office of the Community Planning and Development... Assistance Experience, Expertise, and Awards Received Matrices. Description of the need for the information proposed: The Technical Assistance Experience, Expertise, and Awards Received Matrices will allow...

  11. A high voltage power supply for the AE-C and D low energy electron experiment

    NASA Technical Reports Server (NTRS)

    Gillis, J. A.

    1974-01-01

    A description is given of the electrical and mechanical design and operation of high voltage power supplies for space flight use. The supply was used to generate the spiraltron high voltage for low energy electron experiment on AE-C and D. Two versions of the supply were designed and built; one design is referred to as the low power version (AE-C) and the other as the high power version (AE-D). Performance is discussed under all operating conditions.

  12. Oxygen supply in rural africa: a personal experience.

    PubMed

    Schneider, G

    2001-06-01

    Oxygen is one of the essential medical supplies in any hospital setting. However, in some rural African settings without regular electricity and with logistical problems in the transport of oxygen cylinders, the delivery of oxygen can be difficult. This paper compares the costs incurred using oxygen cylinders with a solar operated oxygen concentrator in a rural Gambian setting. The paper shows that a solar operated system has a high capital investment initially, but that running costs and maintenance are minimal. The system becomes cost effective if a rural hospital needs more than 6 treatment days (1 l/min) of oxygen per month and can be considered in a setting where 6 hours of sunlight per day can be guaranteed. PMID:11409578

  13. 42 CFR 405.2415 - Services and supplies incident to nurse practitioner, physician assistant, certified nurse...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... practitioner, physician assistant, certified nurse midwife, clinical psychologist, or clinical social worker... nurse practitioner, physician assistant, certified nurse midwife, clinical psychologist, or clinical..., certified nurse midwife, clinical psychologist, or clinical social worker service are payable under...

  14. Initial clinical experience using a novel laparoscopy assistant.

    PubMed

    Mishra, Raineesh; Martínez, Arturo Minor; Lorias Espinoza, Daniel

    2011-05-01

    This article presents the first clinical and experimental experiences of the PMASS (Postural Mechatronic Assistance Solo Surgery) from a prospective study carried on on thirteen laparoscopic procedures. Also, their advantages and disadvantages are identified. The PMASS is a system with three articulations; two articulations are passive and one is active; this handles the optic in real time, reducing the latency time by spatial relocation. The surgeons assisted themselves visually in 13 surgical procedures, having direct and intuitive control in real time of the laparoscopic vision field using the PMASS. The surgical and delay time was documented for each surgery. The surgical procedures were: Laparoscopic appendicectomy, ovarian cystectomy and laparoscopic sterilization. In all procedures, surgeons were able to auto-navigate in real time and there was no visual tremor while using the system. The global average times taken to perform the self-assisted surgery with the PMASS for the laparoscopic appendicectomies were 45 ± 4.5 minutes, ovarian cystectomies 49 ± 3.5 minutes and for the laparoscopic sterilization 22 ± 2 minutes. The approximate set-up time of PMASS was one minute, and removal almost a minute (the time required by the surgeon to remove the harness after completing the surgery). The laparoscope itself disengages from the PMASS in a couple of seconds approximately. There were no transoperative or postoperative complications during the procedures. Thirteen laparoscopic procedures were performed, the design of the mechatronic assistance allowed the surgeon to self-assist visually in real time and in an autonomous way in the solo-surgery mode, without compromising the surgical performance and the morbidity. Additionally, the latency times are also reduced by space relocation and coupling of the telescope. PMID:21105849

  15. A new VME based high voltage power supply for large experiments

    SciTech Connect

    Ahn, S.C.; Angstadt, R.D.; Droege, T.F.; Johnson, M.E.; MacKinnon, B.A.; McNulty, S.E.; Shea, M.F.; Thompson, R.N.; Watson, M.M.; Franzini, P.; Jones, A.A.; Lopez, M.L.; Wimpenny, S.J.; Yang, M.J.

    1991-11-01

    A new VME based high voltage power supply has been developed for the D{O} experiment at Fermilab. There are three types of supplies delivering up to {plus_minus}5.6 kV at 1.0 mA or +2.0 kV at 3.0 mA with a set accuracy of 1.5 V and extremely low voltage ripples. Complete computer control has allowed many special features to be developed for the supply, including user-defined control land monitor groups, variable ramp rates, and advanced histogram and graphic functions. 3 refs.

  16. A new VME based high voltage power supply for large experiments

    SciTech Connect

    Ahn, S.C.; Angstadt, R.D.; Droege, T.F.; Johnson, M.E.; MacKinnon, B.A.; McNulty, S.E.; Shea, M.F.; Thompson, R.N.; Watson, M.M. ); Franzini, P. ); Jones, A.A. ); Lopez, M.L. ); Wimpenny, S.J.; Yang, M.J

    1991-11-01

    A new VME based high voltage power supply has been developed for the D{O} experiment at Fermilab. There are three types of supplies delivering up to {plus minus}5.6 kV at 1.0 mA or +2.0 kV at 3.0 mA with a set accuracy of 1.5 V and extremely low voltage ripples. Complete computer control has allowed many special features to be developed for the supply, including user-defined control land monitor groups, variable ramp rates, and advanced histogram and graphic functions. 3 refs.

  17. Video-assisted thoracoscopic thymectomy surgery: Tor Vergata experience.

    PubMed

    Mineo, Tommaso Claudio; Ambrogi, Vincenzo

    2015-04-01

    The therapeutic effect of thymectomy on myasthenia gravis is not completely understood. Several types of thymectomy varying in approach and extent have been performed. None of these disclosed a neat superiority over others. Patients desire thymectomy through small, painless, and cosmetically favorable operations. Video-assisted thoracoscopic surgery (VATS) thymectomy fits all these requests as well as that of the surgeon. Indeed, this approach allows for ample operative space, easy maneuverability, and extended thymectomy. No mortality, low morbidity, faster recovery, short hospital stay, and small economical costs are undoubtedly advantages of VATS over transsternal and transcervical thymectomy. In the near future, the introduction of robotic devices will lead to a new era in the surgery of the thymus. Herein we analyzed our comprehensive experience. PMID:25703636

  18. Understanding the learning assistant experience with physics identity

    NASA Astrophysics Data System (ADS)

    Close, Eleanor W.; Close, Hunter G.; Donnelly, David

    2013-01-01

    Learning Assistants (LAs) have been shown to have better conceptual understanding and more favorable beliefs about science than non-LAs, and are more likely to choose a career in K-12 science teaching [1]. We propose that connections between elements of identity, persistence, and participation in an LA program can be explained using the concept of the community of practice and its intimate relationship to identity [2]. In separate work, Hazari et al. found that physics identity was highly correlated to expressed career plans in physics [3]. We hypothesize that a thriving LA program has many features of a well-functioning community of practice and contributes to all four elements of physics identity: personal interest, student performance, competence, and recognition by others. We explore how this analysis of the LA experience might shape decisions and influence outcomes of adoption and adaptations of the LA model.

  19. Differences in Assisted Living Staff Perceptions, Experiences, and Attitudes

    PubMed Central

    Cohen, Lauren W.; Zimmerman, Sheryl; Gwyther, Lisa P.; Washington, Tiffany; Cagle, John C.; Reed, David

    2014-01-01

    Research within residential care/assisted living (RC/AL) settings has shown that the attitudes of personal care (PC) staff towards their organization, and its residents and families, can affect the quality of resident care. This paper describes the perceptions, experiences, and attitudes of PC staff and their supervisors and considers these data in the context of non-hierarchical staffing patterns – a philosophically expected, yet unproven tenet of RC/AL. Using data collected from 18 RC/AL communities, these analyses compared the characteristics, perceptions, experiences, and attitudes of PC staff (N=250) and supervisors (N=30). Compared to supervisors, PC staff reported greater burden, frustration, depersonalization, hassles, and feeling significantly more controlling of, and less in partnership with, families (p<0.05). Because the PC staff experience is crucial for their and resident outcomes, more work is needed to create a work environment where PC staff are less burdened and have better attitudes towards work and families. PMID:23937102

  20. The Freshman Experience and the Role of Student Assistants.

    ERIC Educational Resources Information Center

    Santa Rita, Emilio

    The Student Assistants' Program (SAP) was implemented at Bronx Community College (BCC) (New York) to reduce attrition between admission and the first day of classes. The principal objective of the program is to train presently enrolled students to provide individual assistance to entering freshmen. These student assistants help new students with…

  1. Teaching Marginal Cost, Supply, and Efficiency with an English-Auction Experiment.

    ERIC Educational Resources Information Center

    Bernard, John C.; Schulze, William

    2000-01-01

    Describes a computerized English-auction experiment that helps students to understand marginal cost and its interrelationships with supply and the efficiency of competitive markets. Explains that the English auction is in a market where there are many sellers (students) and one buyer (computer). States that this exercise offers a good introduction…

  2. Sexuality and Intimacy in Assisted Living: Residents’ Perspectives and Experiences

    PubMed Central

    Frankowski, Ann Christine; Clark, Leanne J.

    2014-01-01

    The assisted living industry provides residential, medical, nutritional, functional, and social services for approximately 1 million older adults in the United States. Despite their holistic approach to person-centered care and their emphasis on a consumer-empowered, social environment, assisted living providers pay scant attention to clients’ sexual needs. In this article, the authors discuss the realities of sex and intimacy in assisted living from the perspectives of residents, families, managers, and staff, exploring the discourse of sexuality, the impact of institutional structure and the role of oversight on sexual attitudes and behaviors, and the relationship of assisted living industry values to residents’ sexual expression. Also presented are practical recommendations and policy implications for addressing the sexual and intimacy needs of current and future cohorts of assisted living residents. Data for this article were drawn from 3 National Institute on Aging–funded ethnographic studies conducted in 13 assisted living settings over 9 years. PMID:25568640

  3. Food supply and seasonal variation in breeding success: an experiment in the European coot

    PubMed Central

    Brinkhof, M. W. G.; Cave, A. J.

    1997-01-01

    We investigated experimentally the seasonal role of food supply in brood survival of the European coot Fulica atra. For two breeding seasons, individual pairs were offered supplemental food the first ten days after their young hatched. Under natural conditions this period was largely responsible for the seasonal variation in brood survival. Our experiment tested three hypotheses: (1) food supply is not involved in breeding success at any date (other factors hypothesis), (2) food supply limits success independently of date (elevation hypothesis), and (3) food supply affects success seasonally and is responsible for the natural seasonal trend in success (date hypothesis). Experimental pairs with supplemental food raised heavier, larger and more chicks than control pairs. Consistent with the date hypothesis, food supplementation abolished seasonal variation in chick survival. Chick growth under supplemental food was in agreement with the elevation hypothesis. This discrepancy was probably due to the limited supply of additional food. We conclude that seasonal variation in offspring production was in essence the result of seasonal variation in food availability.

  4. Application of power-factor correction in the Tandem Mirror Experiment Upgrade magnet power supply

    SciTech Connect

    Corvin, W.C.

    1981-08-14

    The magnet power supply for the Tandem Mirror Experiment Upgrade (TMX Upgrade) contains 24 groups of dc rectifiers that feed the water-cooled magnets. Each group consists of five or less rectifiers, connected in series. All 24 are current-regulating, using phase-controlled bilateral thyristors in the rectifier transformer primaries. The electric utility system must furnish reactive power to these phase-controlled thyristors as well as to the cmmutating diodes in the rectifier bridges.

  5. Assisting people with dementia with their medicines: experiences of family carers

    PubMed Central

    Smith, Felicity; Grijseels, Madelon S; Ryan, Patricia; Tobiansky, Robert

    2015-01-01

    Objectives Many family carers provide assistance with medicines that is vital for optimal clinical outcomes. Medicines-related tasks are known to contribute to carer burden and stress. This study examined the experiences of family carers when providing medicines-related assistance for a person with dementia, to indicate how services could become more responsive to the specific needs of this group of carers. Methods Semi-structured interviews were undertaken with family carers and care-recipients identified though a memory clinic in north London and a local Alzheimer's Society. The interview guide, comprising open questions, was informed by previous studies and consultation with stakeholders. Qualitative procedures involving a framework approach were employed in the analysis. Key findings Fourteen interviews with carers and five with care-recipients were conducted. These highlighted the burden and challenges, surrounding medicines-management activities. As well as practical aspects that could be complex, carers were commonly making judgements about the need for and appropriateness of medicines. Although experiences were varied, carers reported difficulties in maintaining supplies, ensuring adherence to regimens and accessing health professionals; and they made some recommendations for service improvements. Carers’ difficulty in obtaining information and advice about medicines was compounded by their desire to allow the care-recipient to retain autonomy over their medicines as long as possible. Conclusion This study highlights the distinct needs and problems with regard to medicines-management when caring for a person with dementia. As the prevalence of dementia rises, interventions designed to address these specific aspects of reduce carer-burden should be a priority for health professionals. PMID:25351043

  6. Robot-assisted pancreatoduodenectomy with preservation of the vascular supply for autologous islet cell isolation and transplantation: a case report

    PubMed Central

    2012-01-01

    Introduction For patients with chronic pancreatitis presenting with medically intractable abdominal pain, surgical intervention may be the only treatment option. However, extensive pancreatic resections are typically performed open and are associated with a substantial amount of postoperative pain, wound complications and long recovery time. Minimally invasive surgery offers an avenue to improve results; however, current limitations of laparoscopic surgery render its application in the setting of chronic pancreatitis technically demanding. Additionally, pancreatic resections are associated with a high incidence of diabetes. Transplantation of islets isolated from the resected pancreas portion offers a way to prevent post-surgical diabetes; however, preservation of the vascular supply during pancreatic resection, which determines islet cell viability, is technically difficult using current laparoscopic approaches. With recent advances in the surgical field, robotic surgery now provides a means to overcome these obstacles to achieve the end goals of pain relief and preserved endocrine function. We present the first report of a novel, minimally invasive robotic approach for resection of the pancreatic head that preserves vascular supply and enables the isolation of a high yield of viable islets for transplantation. Case presentation A 35-year old Caucasian woman presented with intractable chronic abdominal pain secondary to chronic pancreatitis, with a stricture of her main pancreatic duct at the level of the ampulla of Vater and distal dilatation. She was offered a robotic-assisted pylorus-preserving pancreatoduodenectomy and subsequent islet transplantation, to both provide pain relief and preserve insulin-secretory reserves. Conclusion We present a novel, minimally invasive robotic approach for resection of the pancreatic head with complete preservation of the vascular supply, minimal warm ischemia time (less than three minutes) and excellent islet recovery (134

  7. Family members' experiences of personal assistance given to a relative with disabilities.

    PubMed

    Ahlström, Gerd; Wadensten, Barbro

    2011-11-01

    Personal assistance is a type of home care common to many countries even though entitlement and legislative framework may vary from country to country. At present, there exists no knowledge about the family members' experiences of such assistance; therefore, the aim of this study was to investigate family members' experiences of personal assistance given to a relative of working age with a functional disability. Twenty-five family members who had a relative with a severe neurological disease in Sweden were interviewed about the significance of personal assistance, and the qualitative interviews were subjected to qualitative latent content analysis. The overall findings verify the close connection between the family members' experiences and their perception of the quality of the caring relationship between the personal assistant and the person with disability. The main finding was an appreciation of the personal assistance on the part of the family members. However, in situations where the encounter between the assistant and the relative with disability was perceived negatively, the family members experienced great anxiety. The shortcomings were the inability to maintain a private life with assistance and the limitation of choice because of the shortage of personal assistants. Beyond these general findings, this study found that personal assistance was experienced by the family members in terms of dignity and empowering care. This theme was generated from seven subthemes: Insight into private life, Security through the close relation, Social life through freedom of movement, Influence over the organisation of assistance, Self-determination and understanding, Friendship and mutual respect and Adaption to the dependency on assistance. The findings indicate that responsible officials, work leaders and assistants need constantly to improve the implementation of the law. In such efforts, the experiences of family members described in this study are a source of knowledge

  8. Moral Behavior of Resident Assistants: A Lived Experience

    ERIC Educational Resources Information Center

    Stark, Rachael H.

    2013-01-01

    Resident Assistants (RAs) are traditionally upper-class students who are responsible for enforcing residence-hall policies (Heala, 2006). These undergraduate paraprofessional students are consistently asked to hold their peers accountable for their behavior, yet this task can be a struggle for those RAs who are unable to display consistently moral…

  9. Private Education and Disadvantage: The Experiences of Assisted Place Holders

    ERIC Educational Resources Information Center

    Power, Sally; Curtis, Andrew; Whitty, Geoff; Edwards, Tony

    2010-01-01

    It is now nearly thirty years since Margaret Thatcher and her Conservative administration introduced the Assisted Places Scheme (their first education policy) and over ten years since New Labour abolished it. The Scheme, which was designed to provide a ladder of opportunity for academically able students from poor backgrounds to attend private…

  10. Instructional Experiences of Graduate Assistants Implementing Explicit and Reflective Introductory Biology Laboratories

    NASA Astrophysics Data System (ADS)

    Uludag Bautista, Nazan; Schussler, Elisabeth E.; Rybczynski, Stephen M.

    2014-05-01

    Science education reform documents identify nature of science (NOS) as a critical component of scientific literacy and call for universities, colleges, and K-12 schools to explicitly integrate NOS learning into science curricula. In response to these calls, this study investigated the classroom practices of nine graduate assistants (GAs) who taught expository and inquiry laboratories that implemented an explicit and reflective (ER) pedagogy to teach NOS. The purpose of this qualitative study was to better understand the experiences that enabled or inhibited GA implementation of an ER strategy in a college setting. The findings revealed that achieving quality implementation in this setting was very difficult. Factors such as GAs' ability to foster meaningful classroom discussions, laboratory logistics (e.g. lack of time and supplies), and the value undergraduates and GAs saw in learning about NOS were identified by GAs and observed by the researchers as barriers to the technique maximizing its potential. Thus, for meaningful infusion of NOS into science curricula, pedagogical support for GAs to manage meaningful classroom discussions in support of NOS or other complex topics is recommended for an ER approach to NOS learning to be successful in college settings.

  11. Assistant Principals' Lived Experiences with Managerial Skills Needed for Promotion: A Phenomenological Study

    ERIC Educational Resources Information Center

    Flowers, Melnice

    2014-01-01

    The purpose of this qualitative, phenomenological study was to explore the lived experiences of assistant principals in what they deem to be the needed managerial skills for promotion to campus principal. The sample for the study included 20 assistant principals in an urban school district located in Texas. The process of phenomenological enquiry…

  12. Technohubs in Teacher Education: The Lived Experience of Assisting Peers with Instructional Technology Issues

    ERIC Educational Resources Information Center

    Rook, Michael Montalto

    2014-01-01

    This study examined prospective teachers' lived experiences of assisting peers with instructional technology issues. The study built upon one of ISTE's (2003) essential conditions for integrating technology in education: technical assistance for using technology. Through a review of relevant literature, an argument was made for the study based on…

  13. Learning Experiences in Robotic-Assisted Laparoscopic Surgery.

    PubMed

    Nezhat, Ceana; Lakhi, Nisha

    2016-08-01

    With the use and adoption of computer-assisted laparoscopic technology gaining more prominence, important issues pertaining to the learning process are raised. Several modalities can be incorporated into a training program for robotic surgical development. The role and utility of various methods, including didactic instruction, virtual reality simulators, dry and wet laboratories, bedside assistance, mentoring, as well as proctorship, are still in the process of being assessed and validated. Integration of robotic training in residency and fellowship programs as well as the formation of a structured didactic robotic curriculum continues to be a challenge. Finally, methods to assess competency of training and the process for credentialing robotic surgeons still require further structuring and codification. PMID:26707192

  14. Citric acid-assisted phytoextraction of lead: a field experiment.

    PubMed

    Freitas, Eriberto Vagner; Nascimento, Clístenes Williams; Souza, Adailson; Silva, Fernando Bruno

    2013-06-01

    Soil contamination with heavy metals has become a serious environmental problem that requires affordable strategies of remediation. This study was carried out to assess the performance of maize and vetiver in the phytoextraction of Pb from a soil contaminated by battery recycling activities. The species were planted with different spacings between rows (0.80, 0.65 and 0.50m). Citric acid (40mmolkg(-1)) was applied on each experimental plot on the 61st d of cultivation in order to solubilize the Pb and assist the phytoextraction. The results showed that the chelating agent promoted a 14-fold increase in the Pb concentration in maize shoots as compared to the control, which accumulated only 111mgkg(-1) of the metal. The citric acid induced a Pb concentration in vetiver shoots that was 7.2-6.7-fold higher than the control at both the 0.65 and 0.50m plant spacing, respectively. The use of citric acid increased substantially the uptake and translocation of Pb to the shoots, regardless of plant spacing. Citric acid was efficient in solubilizing Pb from the soil and inducing its uptake by both species. Environmentally-friendly and cost effective, commercial citric acid is recommended for assisting Pb-phytoextraction in the studied area. Due to the low natural solubility of Pb and a time frame needed of longer than 150yr to accomplish the clean-up, phytoextraction with no chelate assistance is not recommended for the area. PMID:23490185

  15. Building No. 1057, Experiment Station Assistant’s Residence, view of south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Building No. 1057, Experiment Station Assistant’s Residence, view of south elevation - Wind River Administrative Site, Building No. 1057, Chapman Road, near Lookout Mountain Road, Carson, Skamania County, WA

  16. Building No. 1057, Experiment Station Assistant’s Residence, view of west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Building No. 1057, Experiment Station Assistant’s Residence, view of west elevation - Wind River Administrative Site, Building No. 1057, Chapman Road, near Lookout Mountain Road, Carson, Skamania County, WA

  17. Building No. 1057, Experiment Station Assistant’s Residence, view of north ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Building No. 1057, Experiment Station Assistant’s Residence, view of north elevation - Wind River Administrative Site, Building No. 1057, Chapman Road, near Lookout Mountain Road, Carson, Skamania County, WA

  18. Building No. 1057, Experiment Station Assistant’s Residence, view of east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Building No. 1057, Experiment Station Assistant’s Residence, view of east elevation - Wind River Administrative Site, Building No. 1057, Chapman Road, near Lookout Mountain Road, Carson, Skamania County, WA

  19. Our experience with implantation of VentrAssist left ventricular assist device

    PubMed Central

    Jayanthkumar, Hiriyur Shivalingappa; Murugesan, Chinnamuthu; Rajkumar, John; Harish, Bandlapally Ramanjaneya Gupta; Muralidhar, Kanchi

    2013-01-01

    Perioperative anaesthetic management of the VentrAssist™ left ventricular assist device (LVAD) is a challenge for anaesthesiologists because patients presenting for this operation have long-standing cardiac failure and often have associated hepatic and renal impairment, which may significantly alter the pharmacokinetics of administered drugs and render the patients coagulopathic. The VentrAssist is implanted by midline sternotomy. A brief period of cardiopulmonary bypass (CPB) for apical cannulation of left ventricle is needed. The centrifugal pump, which produces non-pulsatile, continuous flow, is positioned in the left sub-diaphragmatic pocket. This LVAD is preload dependent and afterload sensitive. Transoesophageal echocardiography is an essential tool to rule out contraindications and to ensure proper inflow cannula position, and following the implantation of LVAD, to ensure right ventricular (RV) function. The anaesthesiologist should be prepared to manage cardiac decompensation and acute desaturation before initiation of CPB, as well as RV failure and severe coagulopathic bleeding after CPB. Three patients had undergone implantation of VentrAssist in our hospital. This pump provides flow of 5 l/min depending on preload, afterload and pump speed. All the patients were discharged after an average of 30 days. There was no perioperative mortality. PMID:23716768

  20. Low Income Students: Their Lived University Campus Experiences Pursuing Baccalaureate Degrees with Private Foundation Scholarship Assistance

    ERIC Educational Resources Information Center

    Arzy, Marsha Riley; Davies, Timothy Gray; Harbour, Clifford P.

    2006-01-01

    This qualitative study explored the Lived University Campus Experiences of Low Income Students Pursuing Baccalaureate Degrees with Private Foundation Scholarship Assistance. The findings emerged as the themes "Experiences of Affirmation, Cautious Engagement, Vulnerability, and Transformation." "Experiences of Affirmation" explained the positive…

  1. [AESOP 3000--computer-assisted surgery, personal experience].

    PubMed

    Kasalický, M A; Sváb, J; Fried, M; Melechovský, D

    2002-07-01

    At present the most widely used system of CAS is a vocally controlled manipulator of the laparoscope AESOP 3000 (Automated Endoscopic System for Optimal Positioning) which makes it possible to implement some operations without the assistance of another surgeon ("Solo-surgery"). Because of financial costs the so far little used equipment ZEUS or DA VINCI are already "master-slave" systems with several robot arms where the surgeon operates by means of manipulators in the controlling unit without direct contact with the patient. At the First Surgical Clinic, General Faculty Hospital and First Medical Faculty Charles Universitx the authors use the robot system AESOP 3000 since March 2000, in particular in laparoscopic gastric banding on account of obesity, in laparoscopic cholecystectomies, laparoscopic gastroenteroanastomoses and operations in the area if the hiatus. This system made it possible to reduce the number of assisting physicians. E.g. in gastric banding one assistant is sufficient, in laparoscopic cholecystectomy it is possible to operate only with a suture nurse. The application of AESOP is particularly useful in laparoscopic appendectomies and inguinal hernioplasties where it makes possible so-called "solo-surgery" or "one man surgery". No doubt, it is however necessary to have the possibility to call immediately another doctor to the operation theatre in case of necessary conversion of laparoscopy of laparotomy. The authors did not record any case of unwanted movement of the robot arm or another serious technical problem. As compared with a manually guided laparoscope during the use of AESOP the number of unwanted or inadequate shifts of the optical equipment or its angular rotation decreased considerably. PMID:12197168

  2. Experience with ISO quality control in assisted reproductive technology.

    PubMed

    Alper, Michael M

    2013-12-01

    Assisted reproductive technology (ART) programs are complex organizations requiring the integration of multiple disciplines. ISO 9001:2008 is a quality management system that is readily adaptable to an ART program. The value that ISO brings to the entire organization includes control of documents, clear delineation of responsibilities of staff members, documentation of the numerous processes and procedures, improvement in tracking and reducing errors, and overall better control of systems. A quality ART program sets quality objectives and monitors their progress. ISO provides a sense of transparency within the organization and clearer understanding of how service is provided to patients. Most importantly, ISO provides the framework to allow for continual improvement. PMID:24112531

  3. Armor Development from Decapitated Flash Flood Bores in Supply-Limited Flume Experiments

    NASA Astrophysics Data System (ADS)

    Goodwin, K.; Rhodes, R.; Johnson, J. P.

    2013-12-01

    In rivers assumed to have quasi-normal flow, three main processes have been used to explain bed surface armoring: i) selective entrainment and transport of smaller grains, ii) limited supply of smaller grain sizes, and iii) equal mobility of grains of different sizes, which develops through natural feedbacks such that larger, less mobile grains are enriched on the surface relative to smaller grains. Flash flood-dominated river channels in arid environments often completely lack surface armoring, yet it is unclear whether increased sediment supply or transport of all grain sizes prevents armor development. In order to examine armor development in an end-member case of non-normal flow, we conducted a series of laboratory experiments using flash flood bores. The flume is 33.5 m long, 0.5 m wide, 0.8 m tall, and capable of creating reproducible flood bores by raising a high-speed computerized lift gate and releasing impounded water. For each experiment, the gate was quickly lowered as soon as the flood bore traveled the length of the flume, 'decapitating' the bore from subsequent flow, to better isolate the effects of the bore alone on entrainment and transport. Sediment was not fed into the upstream end of the flume and only sourced from the gravel bed (2 mm to 40 mm), resulting in supply-limited experimental conditions. In response to repeated flood bores, the surface grain size distribution rapidly coarsened. We interpret that kinetic sieving was the dominant cause of surface armoring in these experiments. LiDAR scans of the bed topography from before and after each bore show increased surface roughness due to grain size changes, but small surface elevation changes due to relatively limited erosion. Digital gravelometry from photographs taken after each bore show increased armoring, while sediment transported out the downstream end of the flume tended to be as coarse or coarser than the bed surface. Travel distances of three sizes of RFID-tagged tracer clasts show

  4. Assisting Your Preservice Teacher to Be Successful during Field Experiences

    ERIC Educational Resources Information Center

    Brett, Christine

    2006-01-01

    Field experience (junior practicum and student teaching) is considered by many to be the most influential part of a teacher preparation program (Cruickshank & Aramalin, 1986; Tannehill & Zakrajsek, 1988). During field experiences, preservice teachers (hereafter referred to as PSTs) are guided by a cooperating teacher (hereafter referred to as a…

  5. Commercialization of Plasma-Assisted Technologies: The Indian Experience

    NASA Astrophysics Data System (ADS)

    John, P. I.

    The paper describes an initiative by the Institute for Plasma Research (IPR), India in establishing links with the Indian industry for developing and commercialising advanced plasma-based industrial technologies. This has culminated in the creation of a self-financing technology development, incubation, demonstration and delivery facility. A business plan for converting the knowledge base to commercially viable technologies conceived technology as a product and the industry as the market and addressed issues like resistance to new technologies, the key role of entrepreneur, thrust areas and the necessity of technology incubation and delivery. Success of this strategy is discussed in a few case studies. We conclude by identifying the cost, environmental, strategic and techno-economic aspects, which would be the prime drivers for plasma-assisted manufacturing technology in India.

  6. Initial experience of robot-assisted thoracoscopic surgery in China

    PubMed Central

    Huang, Jia; Luo, Qingquan; Tan, Qiang; Lin, Hao; Qian, Liqiang; Lin, Xu

    2014-01-01

    Background The objective of this study was to evaluate the safety and feasibility of robot-assisted thoracoscopic surgery (RATS). Methods From May 2009 to May 2013, 48 patients with intrathoracic lesions underwent RATS with the da Vinci® Surgical System was reported (11 lobectomies, 37 mediastinal tumour resections). Results RATS was successfully and safely completed in all 48 patients. Conversion of the operation to open surgery was not needed in any patient. The average operation time was 85.9 min, average blood loss 33 ml, and average hospital stay 3.9 days. No patient required blood transfusion. The only recognized adverse event was the development of a bronchopleural fistula in one patient. Conclusions RATS appears feasible and safe in thoracic surgery. More investigation will be needed in order to determine its possible long-term benefits and cost effectiveness. Copyright © 2014 John Wiley & Sons, Ltd. PMID:24782317

  7. The Operation of Magnetically Assisted Fluidized Bed in Microgravity and Variable Gravity: Experiment and Theory

    NASA Astrophysics Data System (ADS)

    Sornchamni, T.; Jovanovic, G.; Atwater, J.; Akse, J.; Wheeler, R.

    Typically, the operation of a conventional fluidized bed relies on the balance of gravitational, buoyancy, and drag forces. In the absence of normal gravity, or under microgravity and variable gravity conditions, the gravitational force must be replaced with an alternative force to restore fluidization. Our work has shown that, given a suitable variable magnetic field design, the resulting magnetic field gradient can create sufficient magnetic force acting upon the ferromagnetic particles to replace or supplement the gravitational force. Therefore, the ferromagnetic granular media can be fluidized in either microgravity or hypogravity. In this paper, we present our experimental and theoretical work leading to a) development of theoretical model based on fundamental principles for the design of the Gradient Magnetically Assisted Fluidized Bed (G-MAFB), and b) practical implementation of the G-MAFB in the filtration and destruction of solid biowaste particles from liquid streams. The G-MAFB system consists of a fluidization column and series of Helmholtz electromagnetic coils, with DC power supply. Each Helmholtz ring is powered and controlled separately. Experiments are performed in both 0g (on board NASA KC- 135) and 1g (laboratory) environments. The experiments in 0g are conducted in a two-dimensional, square cross-section, tapered fluidization column. The tapered shape is introduced to provide additional stability to the fluidization particles. The experiments in 0g prove that the magnetic force has a significant role in keeping the particles from extruding out of the bed. Without the magnetic force, it is impossible to have fluidization in space. Solid waste destruction technologies are needed to support long duration human habitation in space. The current technologies, including supercritical water oxidation (SCWO), microwave powered combustion and fluidized bed incineration, have been applied to the destruction of solid wastes, but none are compatible with

  8. Results in Assisted Peritoneal Dialysis: A Ten-Year Experience

    PubMed Central

    Querido, Sara; Branco, Patrícia Quadros; Costa, Elisabete; Pereira, Sara; Gaspar, Maria Augusta; Barata, José Diogo

    2015-01-01

    Background/Aims. Peritoneal dialysis is a successful renal replacement therapy (RRT) for old and dependent patients. We evaluated the clinical outcomes of an assisted peritoneal dialysis (aPD) program developed in a Portuguese center. Methods. Retrospective study based on 200 adult incident patients admitted during ten years to a PD program. We included all 17 patients who were under aPD and analysed various parameters, including complications with the technique, hospitalizations, and patient and technique survival. Results. The global peritonitis rate was lower in helped than in nonhelped patients: 0.4 versus 0.59 episodes/patient/year. The global hospitalization rate was higher in helped than in nonhelped patients: 0.67 versus 0.45 episodes/patient/year (p = NS). Technique survival in helped patients versus nonhelped patients was 92.3%, 92.3%, 83.1%, and 72.7% versus 91.9%, 81.7%, and 72.1%, and 68.3%, at 1, 2, 3, and 4 years, respectively (p = NS), and patient survival in helped patients versus nonhelped patients was 93.3%, 93.3%, 93.3%, and 74.7% versus 95.9% 93.7%, 89%, and 82% at 1, 2, 3, and 4 years, respectively (p = NS). Conclusions. aPD offers an opportune, reliable, and effective home care alternative for patients with no other RRT options. PMID:26600950

  9. Results in Assisted Peritoneal Dialysis: A Ten-Year Experience.

    PubMed

    Querido, Sara; Branco, Patrícia Quadros; Costa, Elisabete; Pereira, Sara; Gaspar, Maria Augusta; Barata, José Diogo

    2015-01-01

    Background/Aims. Peritoneal dialysis is a successful renal replacement therapy (RRT) for old and dependent patients. We evaluated the clinical outcomes of an assisted peritoneal dialysis (aPD) program developed in a Portuguese center. Methods. Retrospective study based on 200 adult incident patients admitted during ten years to a PD program. We included all 17 patients who were under aPD and analysed various parameters, including complications with the technique, hospitalizations, and patient and technique survival. Results. The global peritonitis rate was lower in helped than in nonhelped patients: 0.4 versus 0.59 episodes/patient/year. The global hospitalization rate was higher in helped than in nonhelped patients: 0.67 versus 0.45 episodes/patient/year (p = NS). Technique survival in helped patients versus nonhelped patients was 92.3%, 92.3%, 83.1%, and 72.7% versus 91.9%, 81.7%, and 72.1%, and 68.3%, at 1, 2, 3, and 4 years, respectively (p = NS), and patient survival in helped patients versus nonhelped patients was 93.3%, 93.3%, 93.3%, and 74.7% versus 95.9% 93.7%, 89%, and 82% at 1, 2, 3, and 4 years, respectively (p = NS). Conclusions. aPD offers an opportune, reliable, and effective home care alternative for patients with no other RRT options. PMID:26600950

  10. Excipient-assisted vinpocetine nanoparticles: experiments and molecular dynamic simulations.

    PubMed

    Li, Cai-Xia; Wang, Hao-Bo; Oppong, Daniel; Wang, Jie-Xin; Chen, Jian-Feng; Le, Yuan

    2014-11-01

    Hydrophilic excipients can be used to increase the solubility and bioavailability of poorly soluble drugs. In this work, the conventional water-soluble pharmaceutical excipients hydroxypropylmethylcellulose (HPMC), polyvinylpyrrolidone (PVP), and lactose (LAC) were used as solid supports to prevent drug nanoparticles from aggregation and enhance drug dissolution. Excipient-assisted vinpocetine (VIN) nanoparticles were prepared by reactive precipitation. The analysis results indicated that HPMC was a suitable excipient to prepare VIN nanoparticles. VIN/HPMC nanoparticles had a mean size of 130 nm within a narrow distribution. The dissolution rate of VIN nanoparticles was significantly faster than those of a physical mixture of VIN/HPMC and raw VIN. VIN/HPMC nanoparticles had a higher dissolution profile than VIN/PVP and VIN/LAC nanoparticles. Besides, molecular dynamics (MD) simulation was applied to investigate the molecular interactions between VIN and excipients. The calculated results revealed that VIN interacted with excipients by Coulomb and Lennard-Jones (LJ) interactions. Few hydrogen bonds were formed between VIN and excipients. The HPMC affording smaller particle size may be a result of the stronger interactions between VIN and HPMC (mainly LJ interaction) and the property of HPMC. These characteristics may greatly influence the adsorption behavior and may be the crucial parameter for the better performance of HPMC. PMID:25244002

  11. Married Couples in Assisted Living: Adult Children's Experiences Providing Support

    ERIC Educational Resources Information Center

    Kemp, Candace L.

    2012-01-01

    Being married in later life often prevents relocation to long-term care settings, but couples do relocate to these environments. Typically, this transition does not mark the end of support provided by families, especially adult children. Little is known about children's experiences providing support in care settings when both parents are involved.…

  12. Computer-Assisted Experiments with a Laser Diode

    ERIC Educational Resources Information Center

    Kraftmakher, Yaakov

    2011-01-01

    A laser diode from an inexpensive laser pen (laser pointer) is used in simple experiments. The radiant output power and efficiency of the laser are measured, and polarization of the light beam is shown. The "h/e" ratio is available from the threshold of spontaneous emission. The lasing threshold is found using several methods. With a…

  13. Computer Assisted Reading Instruction: New Tools for New Experiences.

    ERIC Educational Resources Information Center

    Sponder, Barry

    A Language Experience Approach (LEA) to reading is based on the premise that a child's thinking naturally leads to talking, writing, and eventually reading. Information technologies offer powerful support for learning, but teachers and parents must learn to use these technologies effectively. Three types of computer applications that are…

  14. Enjoying work or burdened by it? How personal assistants experience and handle stress at work.

    PubMed

    Ahlström, Gerd; Wadensten, Barbro

    2012-01-01

    A personal assistant has to promote equality in living conditions for persons with severe disabilities. The aim of this study was to explore how personal assistants experience their work and what strategies they employ to alleviate work-related stress. Thirty personal assistants were interviewed and latent content analysis was performed. The findings regarding the experiences of work-related stress could be brought together under the theme of "difficulties of being in a subordinate position," and those regarding management strategies could be brought together under the theme of "coming to terms with the work situation." There is a need to empower personal assistants through training programs including tailored education, working communities, and coaching. PMID:22630600

  15. Computer-Generated Ovaries to Assist Follicle Counting Experiments

    PubMed Central

    Skodras, Angelos; Marcelli, Gianluca

    2015-01-01

    Precise estimation of the number of follicles in ovaries is of key importance in the field of reproductive biology, both from a developmental point of view, where follicle numbers are determined at specific time points, as well as from a therapeutic perspective, determining the adverse effects of environmental toxins and cancer chemotherapeutics on the reproductive system. The two main factors affecting follicle number estimates are the sampling method and the variation in follicle numbers within animals of the same strain, due to biological variability. This study aims at assessing the effect of these two factors, when estimating ovarian follicle numbers of neonatal mice. We developed computer algorithms, which generate models of neonatal mouse ovaries (simulated ovaries), with characteristics derived from experimental measurements already available in the published literature. The simulated ovaries are used to reproduce in-silico counting experiments based on unbiased stereological techniques; the proposed approach provides the necessary number of ovaries and sampling frequency to be used in the experiments given a specific biological variability and a desirable degree of accuracy. The simulated ovary is a novel, versatile tool which can be used in the planning phase of experiments to estimate the expected number of animals and workload, ensuring appropriate statistical power of the resulting measurements. Moreover, the idea of the simulated ovary can be applied to other organs made up of large numbers of individual functional units. PMID:25812007

  16. Paradox of Modern Pregnancy: A Phenomenological Study of Women's Lived Experiences from Assisted Pregnancy.

    PubMed

    Ranjbar, Fahimeh; Akhondi, Mohammad-Mehdi; Borimnejad, Leili; Ghaffari, Saeed-Reza; Behboodi-Moghadam, Zahra

    2015-01-01

    The purpose of our study was describing the meaning of pregnancy through Assisted Reproductive Technologies (ARTs). A qualitative design with hermeneutic phenomenology approach was selected to carry out the research. Semistructured in-depth interviews were conducted with 12 women who experienced assisted pregnancy. Three themes emerged from women's experience including finding peace in life, paradoxical feelings, and struggling to realize a dream. We concluded that pregnancy is the beginning of a new and hard struggle for women with fertility problems. The findings of our study resulted in helpful implications for the health care professionals managing assisted pregnancies. PMID:26064687

  17. Paradox of Modern Pregnancy: A Phenomenological Study of Women's Lived Experiences from Assisted Pregnancy

    PubMed Central

    Ranjbar, Fahimeh; Akhondi, Mohammad-Mehdi; Borimnejad, Leili; Ghaffari, Saeed-Reza; Behboodi-Moghadam, Zahra

    2015-01-01

    The purpose of our study was describing the meaning of pregnancy through Assisted Reproductive Technologies (ARTs). A qualitative design with hermeneutic phenomenology approach was selected to carry out the research. Semistructured in-depth interviews were conducted with 12 women who experienced assisted pregnancy. Three themes emerged from women's experience including finding peace in life, paradoxical feelings, and struggling to realize a dream. We concluded that pregnancy is the beginning of a new and hard struggle for women with fertility problems. The findings of our study resulted in helpful implications for the health care professionals managing assisted pregnancies. PMID:26064687

  18. Young women’s perceptions and experiences with contraception supply in community pharmacies

    PubMed Central

    Fakih, Souhiela; Batra, Peter; Gatny, Heather H; Kusunoki, Yasamin; Barber, Jennifer S.; Farris, Karen B.

    2015-01-01

    Background Unintended pregnancy is a major public health problem in the United States.. Correct contraceptive use can reduce the rate of unintended pregnancy. Community pharmacies are well positioned to provide contraceptives and advise about contraception. Objectives (1) determine young women’s perceptions and experiences with contraception supply in community pharmacies and (2) identify whether very pharmacy characteristics predicted positive experiences. Design This study was comprised of two cross-sectional surveys including an online women’s pharmacy perceptions and experiences (PPE) survey and a faxed/observed survey of community pharmacies. Setting One County in Michigan, USA Participants Young women and community pharmacies Main outcome measure The two surveys were merged to explore pharmacy characteristics that may impact women’s perceptions and experiences with community pharmacies. Multiple logistic regression analysis was used to explore relationships between pharmacy characteristics and positive outcomes. Results The response rate for the PPE survey was 54% (n= 334/637). Data from all community pharmacies in the county was retrieved via fax (n= 41/94, 43.6%) or observation (n= 53/94, 56.4%). Women were included in this analysis if they indicated a regular (most commonly used) pharmacy in the county of interest (n=210). Over 50% of women (n= 125/210) visited a pharmacy more than once per month. Sixty percent of women were currently using something to prevent pregnancy (n=124/210, 60.8%). Thirty-five percent of women had a positive experience (n=73/210, 34.8%). In the multiple logistic regression, women who visited a chain pharmacy had almost 65% lower odds of an overall positive experience with their regular pharmacy, compared to women who visited a grocery or mass merchandise pharmacy (OR: 0.35, 95% CI: 0.16, 0.75). Conclusion Young women visit community pharmacies and use contraceptives frequently. Interventions need to be developed and

  19. Design and operating experience of a 40 MW, highly-stabilized power supply

    SciTech Connect

    Boenig, H.J.; Ferner, J.A.; Bogdan, F.; Morris, G.C.; Rumrill, R.S.

    1995-07-01

    Four 10 MW, highly-stabilized power supply modules have been installed at the National High Magnetic Field Laboratory in Tallahassee, FL, to energize water-cooled, resistive, high-field research magnets. The power supply modules achieve a long term current stability if 10 ppM over a 12 h period with a short term ripple and noise variation of <10 ppM over a time period of one cycle. The power supply modules can operate independently, feeding four separate magnets, or two, three or four modules can operate in parallel. Each power supply module consists of a 12.5 kV vacuum circuit breaker, two three-winding, step-down transformers, a 24-pulse rectifier with interphase reactors, and a passive and an active filter. Two different transformer tap settings allow rated dc supply output voltages of 400 and 500 V. The rated current of a supply module is 17 kA and each supply module has a one-hour overload capability of 20 kA. The isolated output terminals of each power supply module are connected to a reversing switch. An extensive high-current bus system allows the modules to be connected to 16 magnet cells. This paper presents the detailed design of the power supply components. Various test results taken during the commissioning phase with a 10 MW resistive load and results taken with the research magnets are shown. The effects of the modules on the electrical supply system and the operational behavior of the power factor correction/harmonic filters are described. Included also are results of a power supply module feeding a superconducting magnet during quench propagation tests. Problems with the power supply design and solutions are presented. Some suggestions on how to improve the performance of these supplies are outlined.

  20. Machine-learning-assisted materials discovery using failed experiments

    NASA Astrophysics Data System (ADS)

    Raccuglia, Paul; Elbert, Katherine C.; Adler, Philip D. F.; Falk, Casey; Wenny, Malia B.; Mollo, Aurelio; Zeller, Matthias; Friedler, Sorelle A.; Schrier, Joshua; Norquist, Alexander J.

    2016-05-01

    Inorganic–organic hybrid materials such as organically templated metal oxides, metal–organic frameworks (MOFs) and organohalide perovskites have been studied for decades, and hydrothermal and (non-aqueous) solvothermal syntheses have produced thousands of new materials that collectively contain nearly all the metals in the periodic table. Nevertheless, the formation of these compounds is not fully understood, and development of new compounds relies primarily on exploratory syntheses. Simulation- and data-driven approaches (promoted by efforts such as the Materials Genome Initiative) provide an alternative to experimental trial-and-error. Three major strategies are: simulation-based predictions of physical properties (for example, charge mobility, photovoltaic properties, gas adsorption capacity or lithium-ion intercalation) to identify promising target candidates for synthetic efforts; determination of the structure–property relationship from large bodies of experimental data, enabled by integration with high-throughput synthesis and measurement tools; and clustering on the basis of similar crystallographic structure (for example, zeolite structure classification or gas adsorption properties). Here we demonstrate an alternative approach that uses machine-learning algorithms trained on reaction data to predict reaction outcomes for the crystallization of templated vanadium selenites. We used information on ‘dark’ reactions—failed or unsuccessful hydrothermal syntheses—collected from archived laboratory notebooks from our laboratory, and added physicochemical property descriptions to the raw notebook information using cheminformatics techniques. We used the resulting data to train a machine-learning model to predict reaction success. When carrying out hydrothermal synthesis experiments using previously untested, commercially available organic building blocks, our machine-learning model outperformed traditional human strategies, and successfully

  1. Machine-learning-assisted materials discovery using failed experiments.

    PubMed

    Raccuglia, Paul; Elbert, Katherine C; Adler, Philip D F; Falk, Casey; Wenny, Malia B; Mollo, Aurelio; Zeller, Matthias; Friedler, Sorelle A; Schrier, Joshua; Norquist, Alexander J

    2016-05-01

    Inorganic-organic hybrid materials such as organically templated metal oxides, metal-organic frameworks (MOFs) and organohalide perovskites have been studied for decades, and hydrothermal and (non-aqueous) solvothermal syntheses have produced thousands of new materials that collectively contain nearly all the metals in the periodic table. Nevertheless, the formation of these compounds is not fully understood, and development of new compounds relies primarily on exploratory syntheses. Simulation- and data-driven approaches (promoted by efforts such as the Materials Genome Initiative) provide an alternative to experimental trial-and-error. Three major strategies are: simulation-based predictions of physical properties (for example, charge mobility, photovoltaic properties, gas adsorption capacity or lithium-ion intercalation) to identify promising target candidates for synthetic efforts; determination of the structure-property relationship from large bodies of experimental data, enabled by integration with high-throughput synthesis and measurement tools; and clustering on the basis of similar crystallographic structure (for example, zeolite structure classification or gas adsorption properties). Here we demonstrate an alternative approach that uses machine-learning algorithms trained on reaction data to predict reaction outcomes for the crystallization of templated vanadium selenites. We used information on 'dark' reactions--failed or unsuccessful hydrothermal syntheses--collected from archived laboratory notebooks from our laboratory, and added physicochemical property descriptions to the raw notebook information using cheminformatics techniques. We used the resulting data to train a machine-learning model to predict reaction success. When carrying out hydrothermal synthesis experiments using previously untested, commercially available organic building blocks, our machine-learning model outperformed traditional human strategies, and successfully predicted conditions

  2. The Undergraduate Teaching Assistant Experience Offers Opportunities Similar to the Undergraduate Research Experience†

    PubMed Central

    Schalk, Kelly A.; McGinnis, J. Randy; Harring, Jeffrey R.; Hendrickson, Amy; Smith, Ann C.

    2009-01-01

    There has been a growing concern in higher education about our failure to produce scientifically trained workers and scientifically literate citizens. Active-learning and research-oriented activities are posited as ways to give students a deeper understanding of science. We report on an undergraduate teaching assistant (UTA) experience and suggest that students who participate as a UTA obtain benefits analogous to those who participate as an undergraduate research assistant (URA). We examined the experiences of 24 undergraduates acting as UTAs in a general microbiology course. Self-reported gains by the UTAs were supported by observational data from undergraduates in the course who were mentored by the UTAs and by the graduate teaching assistants (GTAs) with whom the UTAs worked. Specifically, data from the UTAs’ journals and self-reported Likert scales and rubrics indicated that our teaching assistants developed professional characteristics such as self-confidence and communication and leadership skills, while they acquired knowledge of microbiology content and laboratory skills. Data from the undergraduate Likert scale as well as the pre- and post-GTA rubrics further confirmed our UTA’s data interpretations. These findings are significant because they offer empirical data to support the suggestion that the UTA experience is an effective option for developing skills and knowledge in undergraduates that are essential for careers in science. The UTA experience provides a valuable alternative to the URA experience. PMID:23653688

  3. Physics Teaching Assistants' Experiences in Teaching Nature of Science (NOS) in Physics Laboratories

    NASA Astrophysics Data System (ADS)

    Aydeniz, Mehmet; Yeter-Aydeniz, Kubra

    2014-03-01

    The purpose of this study is to investigate physics teaching assistants' experiences with teaching the nature of science to their students. The participants consist of 10 teaching assistants who had taught various undergraduate physics lab sections at least one semester. Data were collected through an open-ended questionnaire, one semi-structured interview and document analyses. The results show that majority of students have difficulty in appropriating the epistemic norms of science in their laboratory reports. The analyses of lab reports show that students fail to develop robust scientific explanations for the data they gather through experiments. The discussion focuses on enhancing teaching assistants' pedagogical content knowledge for promoting students' adequate understanding and use of NOS in their reports.

  4. Power supply design for the tracker detector of the AMS experiment

    SciTech Connect

    Menichelli, M.; Battiston, R.; Bizzarri, M.; Checcucci, B.

    1996-12-31

    The AMS experiment is devoted to the measurement of the antimatter component of cosmic rays in particular the detection of anti-nuclei. The apparatus will operate in space. A preliminary version will fly in 1998 on a Space shuttle mission. The complete system will be installed on the space station Alpha in 2001. The apparatus, in its complete version, will be composed of a magnetic spectrometer based on a microstrip silicon tracker and on a permanent magnet. This instrument will measure the momentum and the magnitude and sign of the charge of the incoming cosmic ray. A time-of-flight detector will be used as a trigger, for up-down rejection and for the measurement of velocity for low-energy particles. A threshold Cherenkov detector will provide further up-down discrimination. An anti-coincidence system, placed on the lateral inner wall of the magnet, will provide suppression of the background due to interaction of primary cosmic rays with the magnet. A transition radiation tracker will identify electrons. This paper describes the power supply system for the tracker detector giving also a short description of the tracker detector electronics to be powered. Results of preliminary tests and studies are also reported.

  5. The Impact of ICT on Work-Life Experiences among University Teaching Assistants

    ERIC Educational Resources Information Center

    Osterlund, Katherine; Robson, Karen

    2009-01-01

    Email is now commonplace in the university environment, but little research has addressed the impact of this technology on the work-life experiences of Teaching Assistants (TAs). These workers are of interest as they are typically responsible for most day-to-day, routine interaction with undergraduates, for ensuring students understand lectures…

  6. Teaching Assistants' Preparation for, Attitudes towards, and Experiences with Academic Dishonesty: Lessons Learned

    ERIC Educational Resources Information Center

    Seals, Michael; Hammons, James O.; Mamiseishvili, Ketevan

    2014-01-01

    This study examined teaching assistants' (TAs) preparation for, attitudes towards, and experiences with academic dishonesty at a public research university. Of 470 TAs, 184 (39%) completed the survey instrument. The major findings of the study were: (a) TAs were more satisfied with their informal than their formal preparation for dealing with…

  7. The Frustrated GTA: A Qualitative Investigation Identifying the Needs within the Graduate Teaching Assistant Experience.

    ERIC Educational Resources Information Center

    Worthen, Thomas K.

    This paper presents the results of a study to identify the specific needs graduate teaching assistants (GTAs) in speech communication have while teaching. Six GTAs completed a description of their experience as GTAs, maintained a day-by-day teaching log and participated in a group discussion. The paper uses a qualitative-phenomenological approach…

  8. International Teaching Assistants' Experiences in the U.S. Classrooms: Implications for Practice

    ERIC Educational Resources Information Center

    Ashavskaya, Ekaterina

    2015-01-01

    Recently, a number of studies have examined the lived experiences of the international teaching assistants (ITAs) in the U.S. classrooms. The findings show that the ITAs face many challenges such as classroom management, instructional, linguistic, cultural and social challenges. Following this line of research, this interview-based study examined…

  9. Collaboration Factors and Quality of Learning Experience on Interactive Mobile Assisted Social E-Learning

    ERIC Educational Resources Information Center

    Wang, Shengmei

    2014-01-01

    This study (n = 52) examined mobile assisted in-class course using collaborative learning theories over an 18-week semester in a college level course. A self-evaluation survey containing 50 closed-ended items with two open-ended questions about participants' collaboration experience through the mobile techs was conducted during the last week…

  10. Becoming Physics People: Development of Integrated Physics Identity through the Learning Assistant Experience

    ERIC Educational Resources Information Center

    Close, Eleanor W.; Conn, Jessica; Close, Hunter G.

    2016-01-01

    In this study, we analyze the experience of students in the Physics Learning Assistant (LA) program at Texas State University in terms of the existing theoretical frameworks of "community of practice" and "physics identity," and explore the implications suggested by these theories for LA program adoption and adaptation.…

  11. Computer-Related Assistive Technology: Satisfaction and Experiences among Users with Disabilities

    ERIC Educational Resources Information Center

    Burton, Mary; Nieuwenhuijsen, Els R.; Epstein, Marcy J.

    2008-01-01

    Many people with disabilities use assistive technology devices (ATDs) for computer access. The specific focus of this exploratory study was (a) to assess the experiences, opinions, and satisfaction levels of 24 individuals with disabilities using computer-related ATDs; (b) to investigate their awareness of health risk factors related to computer…

  12. An Experiment Using a Group Assisted Reading Strategy with Poor Readers.

    ERIC Educational Resources Information Center

    Eldredge, J. Lloyd

    Evidence from existing literature suggests that the decoding and reading comprehension skills of poor readers can be improved by assisting them to read material that is too difficult for them to read by themselves--especially when the reading experiences are focused on the content of the material rather than on the words. A study examined the…

  13. Assistant Principal Experiences that Contribute to Their Transformational Leadership Practices as New Principals

    ERIC Educational Resources Information Center

    DeVillier, Doug

    2009-01-01

    This qualitative research study used narrative inquiry to explore the assistant principal experiences that contribute to transformational leadership practices in new principals. Eight administrators, who were in their first or second year as a principal, participated in the study. The findings suggested that principals play an important role in…

  14. Euthanasia and physician-assisted suicide: knowledge, attitudes and experiences of nurses in Andalusia (Spain).

    PubMed

    Tamayo-Velázquez, María-Isabel; Simón-Lorda, Pablo; Cruz-Piqueras, Maite

    2012-09-01

    The aim of this study is to assess the knowledge, attitudes and experiences of Spanish nurses in relation to euthanasia and physician-assisted suicide. In an online questionnaire completed by 390 nurses from Andalusia, 59.1% adequately identified a euthanasia situation and 64.1% a situation involving physician-assisted suicide. Around 69% were aware that both practices were illegal in Spain, while 21.4% had received requests for euthanasia and a further 7.8% for assisted suicide. A total of 22.6% believed that cases of euthanasia had occurred in Spain and 11.4% believed the same for assisted suicide. There was greater support (70%) for legalisation of euthanasia than for assisted suicide (65%), combined with a greater predisposition towards carrying out euthanasia (54%), if it were to be legalised, than participating in assisted suicide (47.3%). Nurses in Andalusia should be offered more education about issues pertaining to the end of life, and extensive research into this area should be undertaken. PMID:22990427

  15. Early operating and reliability experience with the CEBAF DC magnet power supplies

    SciTech Connect

    Merz, W.; Flood, R.; Martin, E.J.; O'Sullivan, M.

    1996-08-01

    The CEBAF accelerator is a five pass, recirculating, CW electron linear accelerator. There are a total of nine recirculation arcs connecting the two linacs. Three experimental halls are serviced by the accelerator through separate transport channels. The magnet powering system for CEBAF consists of approximately 2000 independent control channels. About 1850 of these channels are low current, trim magnet power supplies. There are 28 higher power supplies used to energize the major bending elements. Over one hundred, 20 amp, active shunts are used to vary current in selected magnets in the major dipole strings. The majority of the magnetic elements are concentrated in the arcs and transport channels. The correction dipoles, quadrupoles and sextupoles are each powered individually be a dedicated trim power supply channel. The arc and extraction channel dipoles are powered in series strings by the high powered supplies, known locally at CEBAF as `box power supplies'. Arc loads consist of some 30--40 magnets in series. Transport channel, path length control doglegs and septa box power supplies have loads ranging from 1 to 10 magnets. Shunts are installed on virtually all loads where two or more magnets are in series. At this time, 95% of the power supplies are installed and commissioned. In the past twelve months, beginning in May 1994, approximately 1200 trim magnet power supplies have been checked out. During this same period approximately 22 box power supplies and 100 shunts have been made operational. Full operation of the equipment has only been under way since early 1995. While this operation is only just beginning, much has been learned based on the reliability performance seen so far. The remainder of this paper describes the systems mentioned, their reliability problems, the fixes implemented to date, and some plans for the future. 6 refs., 3 tabs.

  16. Early operating and reliability experience with the CEBAF DC magnet power supplies

    SciTech Connect

    Merz, W.; Flood, R.; Martin, E.J.; O`Sullivan, M.

    1996-08-01

    The CEBAF accelerator is a five pass, recirculating, CW electron linear accelerator. There are a total of nine recirculation arcs connecting the two linacs. Three experimental halls are serviced by the accelerator through separate transport channels. The magnet powering system for CEBAF consists of approximately 2000 independent control channels. About 1850 of these channels are low current, trim magnet power supplies. There are 28 higher power supplies used to energize the major bending elements. Over one hundred, 20 amp, active shunts are used to vary current in selected magnets in the major dipole strings. The majority of the magnetic elements are concentrated in the arcs and transport channels. The correction dipoles, quadrupoles and sextupoles are each powered individually be a dedicated trim power supply channel. The arc and extraction channel dipoles are powered in series strings by the high powered supplies, known locally at CEBAF as ``box power supplies``. Arc loads consist of some 30-40 magnets in series. Transport channel, path length control doglegs and septa box power supplies have loads ranging from 1 to 10 magnets. Shunts are installed on virtually all loads where two or more magnets are in series. At this time, 95{percent} of the power supplies are installed and commissioned. In the past twelve months, beginning in May 1994, approximately 1200 trim magnet power supplies have been checked out. During this same period approximately 22 box power supplies and 100 shunts have been made operational. Full operation of the equipment has only been under way since early 1995. While this operation is only just beginning, much has been learned based on the reliability performance seen so far. The remainder of this paper describes the systems mentioned, their reliability problems, the fixes implemented to date, and some plans for the future. 6 refs., 3 tabs.

  17. Experiences of Infertile Women Seeking Assisted Pregnancy in Iran: A Qualitative Study

    PubMed Central

    Ranjbar, Fahimeh; Behboodi-Moghadam, Zahra; Borimnejad, Leili; Ghaffari, Saeed Reza; Akhondi, Mohammad Mehdi

    2015-01-01

    Background: Assisted reproductive technologies (ARTs) are complicated and stressful techniques and the social and cultural norms are major obstacles against their use. Many qualitative studies have been done in the field of women’s experiences of infertility, but less is known about the experiences of infertile women seeking assisted pregnancy. The aim of this study was to understand and describe the experience of women who have used assisted reproductive technologies for their current pregnancy. Methods: This qualitative study was conducted based on a content analysis approach. With purposive sampling, 12 pregnant women who were using ART were recruited from Avicenna Fertility Center in Tehran. Women were selected purposefully and with maximum variation. Interviews were performed after a positive test of pregnancy and women were introduced to researchers in their first visit of pregnancy in the prenatal clinic. Interviews were recorded, transcribed verbatim and analyzed concurrently. Semi-structured interviews were coded, categorized and the themes were also identified. Results: Four main themes were uncovered which included struggle to achieve pregnancy, fear and uncertainty, escape from stigma and the pursuit to achieve husband satisfaction. Conclusion: It is essential for these women to be counseled and prepared by their health care providers after the use of ARTs. Distress can be reduced for infertile women seeking assisted pregnancy when they are prepared for possible failures, empowered to deal with stigma, and have their partners’ involvement in counseling sessions. PMID:27110521

  18. Power Supply System for the Atlas Experiment: Design Specifications, Implementation, Test and First Results

    NASA Astrophysics Data System (ADS)

    Lazzaroni, M.; Citterio, M.; Latorre, S.; Lanza, A.; Cova, P.; Delmonte, N.; Giuliani, F.

    2014-06-01

    The planned upgrade of instrumentation sensitivity in the ATLAS experiment of the Large Hadron Collider (LHC), at CERN, calls for a new type of power distribution architecture. Moreover, power supplies require DC-DC power converters able to work in very hostile environment and maintaining high level of Reliability, Availability, Maintainability and Safety (denoted as RAMS requirements) during the experimental activity. Two main issues need to be discussed: first, electronic devices and equipment must operate in very high background of both charged and neutral particles and high static magnetic field and, second, the increase of the radiation background and the requirements of new front-end electronics are indeed incompatible with the current capability of the actual distribution system. The APOLLO R&D collaboration, funded by the Italian Istituto Nazionale di Fisica Nucleare (INFN), aims to study dedicated topologies of both distribution system and DC-DC power converters and to design, build and test demonstrators, developing the needed technology for the industrialization phase. The collaboration has designed a 3kW, 280V-12V converter (MC) based on the Switch in Line architecture (SIL), a DC to DC phase-shifted converter characterized by a disposition in line of the MOSFETs with good soft switching performances, and in the last year many steps have been taken to enhance the power dissipation and the reliability and to improve the general features of the designed converter. In particular a new water heat sink was designed on the basis of TFD simulation accounting for the layout of the specific converter. Experimental activities in order to characterize both thermal and electrical features of the MC confirm the correctness of the adopted design criteria.

  19. The Relationship of Prior Training and Previous Teaching Experience to Self-Efficacy among Graduate Teaching Assistants.

    ERIC Educational Resources Information Center

    Prieto, Loreto R.; Altmaier, Elizabeth M.

    1994-01-01

    A study of 78 graduate teaching assistants (GTAs) found that those with exposure to prior training and higher amounts of teaching experience demonstrated higher self-efficacy than those with less training and experience. It is suggested that these factors may increase teaching assistant effectiveness and that both formal and on-the-job training of…

  20. Design and experiment on a multi-functioned and programmable piezoelectric ceramic power supply with high precision for speckle interferometry

    NASA Astrophysics Data System (ADS)

    Wang, Biao; Ye, Yan; Wang, Yong-hong; Yang, En-zhen

    2016-01-01

    Speckle interferometry is a method of measuring structure's tiny deformations which requires accurate phase information of interference fringes. The phase information is acquired by micro-displacement produced by piezoelectric ceramic (PZT). In order to drive the PZT micro-displacement actuator, a multi-functioned and programmable PZT power supply with high precision is designed. Calibration experiment has been done to the PZT micro-actuator in speckle interferometry. Some experiments were also done to test its relevant characteristics. The experiment results show that it has high linearity, repeatability, stability, low ripple and can meet the requirement of the reliability and displacement accuracy in speckle interferometry.

  1. Robot-Assisted Cardiac Surgery Using the Da Vinci Surgical System: A Single Center Experience

    PubMed Central

    Kim, Eung Re; Lim, Cheong; Kim, Dong Jin; Kim, Jun Sung; Park, Kay Hyun

    2015-01-01

    Background We report our initial experiences of robot-assisted cardiac surgery using the da Vinci Surgical System. Methods Between February 2010 and March 2014, 50 consecutive patients underwent minimally invasive robot-assisted cardiac surgery. Results Robot-assisted cardiac surgery was employed in two cases of minimally invasive direct coronary artery bypass, 17 cases of mitral valve repair, 10 cases of cardiac myxoma removal, 20 cases of atrial septal defect repair, and one isolated CryoMaze procedure. Average cardiopulmonary bypass time and average aorta cross-clamping time were 194.8±48.6 minutes and 126.1±22.6 minutes in mitral valve repair operations and 132.0±32.0 minutes and 76.1±23.1 minutes in myxoma removal operations, respectively. During atrial septal defect closure operations, the average cardiopulmonary bypass time was 128.3±43.1 minutes. The median length of stay was between five and seven days. The only complication was that one patient needed reoperation to address bleeding. There were no hospital mortalities. Conclusion Robot-assisted cardiac surgery is safe and effective for mitral valve repair, atrial septal defect closure, and cardiac myxoma removal surgery. Reducing operative time depends heavily on the experience of the entire robotic surgical team. PMID:25883892

  2. Effectiveness of an Expert System for Astronaut Assistance on a Sleep Experiment

    NASA Technical Reports Server (NTRS)

    Heher, Dennis; Callini, Gianluca; Essig, Susanne M.; Young, Laurence R.; Koga, Dennis (Technical Monitor)

    1998-01-01

    Principal Investigator-in-a-Box ([PI]) is an expert system designed to train and assist astronauts with the performance of an experiment outside their field of expertise, particularly when contact with the Principal Investigators on the ground is limited or impossible. In the current case, [PI] was designed to assist with the calibration and troubleshooting procedures of the Neurolab Sleep and Respiration Experiment during the pre-sleep period of no ground contact. It displays physiological signals in real time during the pre-sleep instrumentation period, and alerts the astronauts when a poor signal quality is detected. Results of the first study indicated a beneficial effect of [PI] and training in reducing anomaly detection time and the number of undetected anomalies. For the in-flight performance, excluding the saturated signals, the expert system had an 84.2% detection accuracy, and the questionnaires filled out by the astronauts showed positive crew reactions to the expert system.

  3. The first-year teaching assistant experience in a chemistry department

    NASA Astrophysics Data System (ADS)

    Hume, Nicole Lynn Cable

    The purpose of this qualitative study was to use an ethnomethodological perspective to investigate the experience of first-year teaching assistants as they make the transition from being a "new TAs" to "experienced TAs" in the Chemistry Department at Purdue University. Three areas were investigated. First, the impact of the graduate student orientation program on the first-year experience was examined and evaluated. Second, the socialization of the teaching assistants was investigated, including the development of social relationships with peers, how TAs learn the culture of the department, and how TAs learn the role of the TA within the department. Finally the professionalism of the teaching assistants was investigated. This area of the TA experience included their self-efficacy, their confidence, their thoughts about what constitutes a good TA, an examination of their perceived strengths and weaknesses, and a comparison of the TAs' ideas versus those of the faculty and staff. The TAs in this project encountered several difficulties or points of confusion during their first year, due in part to inadequate training or poor communication in the department or with the TAs.

  4. Drought and Water Supply. Implications of the Massachusetts Experience for Municipal Planning.

    ERIC Educational Resources Information Center

    Russell, Clifford S.; And Others

    This book uses the 1962-66 Massachusetts drought data as a base of information to build a planning model of water resources that is of interest to students and professionals involved with water management. Using a demand-supply ratio to measure the relative inadequacy of a given water system, the authors then project demand into the drought period…

  5. FERMI magnet power supplies: design strategies and five years of operational experience

    NASA Astrophysics Data System (ADS)

    Visintini, Roberto

    2015-05-01

    FERMI is the FEL-based light source in operation for external users since 2011 at the Elettra Research Center in Trieste, Italy. FERMI@Elettra is the name of the project for the construction and commissioning of this source. The design strategies adopted in the project had to consider the extremely close presence and the routine operation for users of the synchrotron-based source Elettra. There are more than 350 magnets and coils distributed along the linear accelerator, the two chains of undulators and the electron beam dump. Almost each magnetic element requires a dedicated DC power supply. Magnets, power supplies, and the connecting cables constitute a system, strongly interconnected with the remote control system, the machine and personnel safety system, and the infrastructure. All this has to fulfill the requirements from the particle physics specialists. We adopted a "systemic" approach in the design of new magnets and the re-use of the old ones, as well as the choice and the design of the associated power supplies. The commissioning of the systems started early 2010 and almost all magnet power supplies are in operation since then. During these 5 years, we introduced few minor upgrades and patches while the adopted solutions proved their soundness in terms of performance and reliability, causing very little downtime to the FERMI operations.

  6. Informed Practice: Students' Clinical Experiences in the Undergraduate Phase of an Accelerated Physician Assistant Program.

    PubMed

    Dereczyk, Amy; DeWitt, Rachel

    2016-06-01

    This qualitative study explored the clinical experiences of students in an accelerated physician assistant (PA) program. The participants were either certified nursing assistants (CNAs) or emergency medical technicians-basic (EMTs-B). The study was designed to elicit (1) how the participants perceived their older patients and (2) how the participants' experiences might affect their own future communications, bedside manner, and clinical preparedness as PAs. This study used a focus group to explore students' clinical experiences before the graduate phase of their accelerated PA program. Five female and 2 male PA students (N = 7) participated in the study. All participants were 23 years old and worked as either a CNA or an EMT-B. Results fell into 2 basic themes: informing practice and forming relationships. Regarding the first theme, participants felt that their experience as entry-level health care providers allowed them to improve their communication skills and bedside manner and to provide greater comfort to patients. Regarding the second theme, participants gained appreciation for older people and began to recognize the knowledge deficits and learning needs of their patients. The results suggested that a student's clinical experience as a CNA or an EMT-B before entering a PA program has a positive effect on the student's personal and professional development. The participants acquired greater appreciation and respect for older patients and members of the health care team. PMID:27123599

  7. EC assisted start-up experiments reproduction in FTU and AUG for simulations of the ITER case

    NASA Astrophysics Data System (ADS)

    Granucci, G.; Ricci, D.; Cavinato, M.; Farina, D.; Figini, L.; Mattei, M.; Stober, J.; Tudisco, O.

    2014-02-01

    The breakdown and plasma start-up in ITER are well known issues studied in the last few years in many tokamaks with the aid of calculation based on simplified modeling. The thickness of ITER metallic wall and the voltage limits of the Central Solenoid Power Supply strongly limit the maximum toroidal electric field achievable (0.3 V/m), well below the level used in the present generation of tokamaks. In order to have a safe and robust breakdown, the use of Electron Cyclotron Power to assist plasma formation and current rump up has been foreseen. This has raised attention on plasma formation phase in presence of EC wave, especially in order to predict the required power for a robust breakdown in ITER. Few detailed theory studies have been performed up to nowadays, due to the complexity of the problems. A simplified approach, extended from that proposed in ref[1] has been developed including a impurity multispecies distribution and an EC wave propagation and absorption based on GRAY code. This integrated model (BK0D) has been benchmarked on ohmic and EC assisted experiments on FTU and AUG, finding the key aspects for a good reproduction of data. On the basis of this, the simulation has been devoted to understand the best configuration for ITER case. The dependency of impurity distribution content and neutral gas pressure limits has been considered. As results of the analysis a reasonable amount of power (1 - 2 MW) seems to be enough to extend in a significant way the breakdown and current start up capability of ITER. The work reports the FTU data reproduction and the ITER case simulations.

  8. EC assisted start-up experiments reproduction in FTU and AUG for simulations of the ITER case

    SciTech Connect

    Granucci, G.; Ricci, D.; Farina, D.; Figini, L.; Cavinato, M.; Stober, J.; Tudisco, O.

    2014-02-12

    The breakdown and plasma start-up in ITER are well known issues studied in the last few years in many tokamaks with the aid of calculation based on simplified modeling. The thickness of ITER metallic wall and the voltage limits of the Central Solenoid Power Supply strongly limit the maximum toroidal electric field achievable (0.3 V/m), well below the level used in the present generation of tokamaks. In order to have a safe and robust breakdown, the use of Electron Cyclotron Power to assist plasma formation and current rump up has been foreseen. This has raised attention on plasma formation phase in presence of EC wave, especially in order to predict the required power for a robust breakdown in ITER. Few detailed theory studies have been performed up to nowadays, due to the complexity of the problems. A simplified approach, extended from that proposed in ref[1] has been developed including a impurity multispecies distribution and an EC wave propagation and absorption based on GRAY code. This integrated model (BK0D) has been benchmarked on ohmic and EC assisted experiments on FTU and AUG, finding the key aspects for a good reproduction of data. On the basis of this, the simulation has been devoted to understand the best configuration for ITER case. The dependency of impurity distribution content and neutral gas pressure limits has been considered. As results of the analysis a reasonable amount of power (1 - 2 MW) seems to be enough to extend in a significant way the breakdown and current start up capability of ITER. The work reports the FTU data reproduction and the ITER case simulations.

  9. Retroauricular Endoscope-Assisted Approach to the Neck: Early Experience in Latin America.

    PubMed

    Lira, Renan Bezerra; Chulam, Thiago Celestino; Koh, Yoon Woo Woo; Choi, Eun Chang Chang; Kowalski, Luiz Paulo

    2016-04-01

    Introduction There has been a significant increase in concern towards improving aesthetic and functional outcomes without compromising the oncologic effectiveness in head and neck surgery. In this subset, endoscope-assisted and robotic procedures allowed the development of new approaches to the neck, including the retroauricular access, which is now routinely used, especially in Korea. Objectives This study aims to provide a descriptive analysis of our initial experience with retroauricular endoscope-assisted approach assessing feasibility, safety, and aesthetic results. Methods Prospective analysis of the first 11 eligible patients submitted to retroauricular endoscope-assisted approach for neck procedures in the Head and Neck Surgery Department at AC Camargo Cancer Center. Results A total of 18 patients were included in this study, comprising 7 supraomohyoid neck dissections, 8 submandibular gland excisions, 3 thyroid lobectomies, and one paraganglioma excision. There was no significant local complications, surgical accident, or need for conversion into conventional open procedure in this series. Conclusion Our initial experience has shown us that this approach is feasible, safe, oncologically efficient, and applicable to selected cases, with a clear cosmetic benefit. PMID:27096018

  10. Retroauricular Endoscope-Assisted Approach to the Neck: Early Experience in Latin America

    PubMed Central

    Lira, Renan Bezerra; Chulam, Thiago Celestino; Koh, Yoon Woo Woo; Choi, Eun Chang Chang; Kowalski, Luiz Paulo

    2016-01-01

    Introduction There has been a significant increase in concern towards improving aesthetic and functional outcomes without compromising the oncologic effectiveness in head and neck surgery. In this subset, endoscope-assisted and robotic procedures allowed the development of new approaches to the neck, including the retroauricular access, which is now routinely used, especially in Korea. Objectives This study aims to provide a descriptive analysis of our initial experience with retroauricular endoscope-assisted approach assessing feasibility, safety, and aesthetic results. Methods Prospective analysis of the first 11 eligible patients submitted to retroauricular endoscope-assisted approach for neck procedures in the Head and Neck Surgery Department at AC Camargo Cancer Center. Results A total of 18 patients were included in this study, comprising 7 supraomohyoid neck dissections, 8 submandibular gland excisions, 3 thyroid lobectomies, and one paraganglioma excision. There was no significant local complications, surgical accident, or need for conversion into conventional open procedure in this series. Conclusion Our initial experience has shown us that this approach is feasible, safe, oncologically efficient, and applicable to selected cases, with a clear cosmetic benefit. PMID:27096018

  11. [Evaluation of 2 years' experience with assisted circulation by diastolic counterpulsation].

    PubMed

    Vernant, P; Lellouche, D; Bouillot, M; Loisance, D; Nitenberg, A

    1975-01-01

    The authors report their two years' experience of circulatory assistance by diastolic counter-pulsation with an intra-aortic balloon. This technique was used in 23 patients: 9 cases of cardiogenic shock due to acute myocardial infarction, 9 septal ruptures, 1 rupture of the papillary muscle of the mitral valve, 1 acute ventricular aneurysm, 2 high risk coronary arteriographies and 1 case of early post-infarction recurrent ischemia. It confirms the gravity of cardiogenic shock as, in spite of the frequent improvement in hemodynamic parameters under counter-pulsation, there was only one survivor. The efficacy is greater in cases of septal rupture, where the author obtained 3 survivors out of 6 operated cases. The security of the method and its innocuity permit one to carry out high risk coronary arteriography and extend the indications for circulatory assistance, to certain cases of unstable angina or early recurrent anginal following acute infarction. PMID:1229961

  12. Staff experiences of providing maternity services in rural southern Tanzania – a focus on equipment, drug and supply issues

    PubMed Central

    2013-01-01

    Background The poor maintenance of equipment and inadequate supplies of drugs and other items contribute to the low quality of maternity services often found in rural settings in low- and middle-income countries, and raise the risk of adverse patient outcomes through delaying care provision. We aim to describe staff experiences of providing maternal and neonatal care in rural health facilities in Southern Tanzania, focusing on issues related to equipment, drugs and supplies. Methods Focus group discussions and in-depth interviews were conducted with different staff cadres from all facility levels in order to explore experiences and views of providing maternity care in the context of poorly maintained equipment, and insufficient drugs and other supplies. A facility survey quantified the availability of relevant items. Results The facility survey, which found many missing or broken items and frequent stock outs, corroborated staff reports of providing care in the context of missing or broken care items. Staff reported increased workloads, reduced morale, difficulties in providing optimal maternity care, and carrying out procedures with potential health risks to themselves as a result. Conclusions Inadequately stocked and equipped facilities compromise the health system’s ability to reduce maternal and neonatal mortality and morbidity by affecting staff personally and professionally, which hinders the provision of timely and appropriate interventions. Improving stock control and maintaining equipment could benefit mothers and babies, not only through removing restrictions to the availability of care, but also through improving staff working conditions. PMID:23410228

  13. Code Sharing and Collaboration: Experiences from the Scientist's Expert Assistant Project and their Relevance to the Virtual Observatory

    NASA Technical Reports Server (NTRS)

    Jones, Jeremy; Grosvenor, Sandy; Wolf, Karl; Li, Connie; Koratkar, Anuradha; Powers, Edward I. (Technical Monitor)

    2001-01-01

    In the Virtual Observatory (VO), software tools will perform the functions that have traditionally been performed by physical observatories and their instruments. These tools will not be adjuncts to VO functionality but will make up the very core of the VO. Consequently, the tradition of observatory and system independent tools serving a small user base is not valid for the VO. For the VO to succeed, we must improve software collaboration and code sharing between projects and groups. A significant goal of the Scientist's Expert Assistant (SEA) project has been promoting effective collaboration and code sharing between groups. During the past three years, the SEA project has been developing prototypes for new observation planning software tools and strategies. Initially funded by the Next Generation Space Telescope, parts of the SEA code have since been adopted by the Space Telescope Science Institute. SEA has also supplied code for SOFIA, the SIRTF planning tools, and the JSky Open Source Java library. The potential benefits of sharing code are clear. The recipient gains functionality for considerably less cost. The provider gains additional developers working with their code. If enough users groups adopt a set of common code and tools, defacto standards can emerge (as demonstrated by the success of the FITS standard). Code sharing also raises a number of challenges related to the management of the code. In this talk, we will review our experiences with SEA - both successes and failures - and offer some lessons learned that may promote further successes in collaboration and re-use.

  14. The First Year Experience of a Peer Assisted Learning Program in Two Institutes of Technology in Ireland

    ERIC Educational Resources Information Center

    Ginty, Carina; Harding, Nuala

    2014-01-01

    This paper describes a collaborative action research study in which peer assisted learning was deployed simultaneously across a range of disciplines in two institutes of technology in Ireland. The aim of the research was to determine if peer assisted learning enhances the learning experience of first year participants. An action research approach…

  15. Initial experience with a juvenile sheep model for evaluation of the pediatric intracorporeal ventricular assist devices

    PubMed Central

    Wei, Xufeng; Li, Tieluo; Sanchez, Pablo; Watkins, Amelia; Li, Shuying; DeFilippi, Christopher; Wu, Zhongjun J.; Griffith, Bartley P

    2012-01-01

    Background There is a scarcity of source material available in animal models appropriate to test pediatric-size blood pump design for assisting the left ventricle. A juvenile ovine animal model was developed to evaluate two pediatric ventricular assist devices (VAD). The child size Jarvik 2000 and CircuLite VADs were tested with this model. The 33 in vivo experiments were retrospectively studied to evaluate the reliability of the animal model. Methods Dorset hybrid juvenile sheep (20~36 kg) were used for evaluation of the small pediatric VADs. Under general anesthesia, a left lateral thoracotomy was performed through the fifth intercostal space. The devices were implanted between the left ventricle apex and the descending aorta without cardiopulmonary bypass. Heparin was continuously infused for anticoagulation therapy. Results Support duration averaged 26.7±19.6 days. 75.7% (25/33) experiments were completed as intended. Animals were docile and did not require sitters beyond the immediate operative period. Complication includes leg injury, graft infection, gastrointestinal bleeding, intravenous line disconnection, weight loss, renal failure, red urine (1 for each) and pulmonary failure in two. The activated clotting time (ACT) was adjusted via continuous intravenous heparin to 150-200 second. Reliable hemodynamics and biocompability data were collected for evaluate the pediatric intracorporeal VADs in the animal model. Conclusion The juvenile sheep model is a reliable, reproducible, and translatable for testing the Pediatric VADs. These experiments provided vital information for improvement of the devices and for clinical application in the future. PMID:23254234

  16. Early experience of robotic-assisted inguinal lymphadenectomy: review of surgical outcomes relative to alternative approaches.

    PubMed

    Kharadjian, Talar B; Matin, Surena F; Pettaway, Curtis A

    2014-06-01

    Inguinal lymph node dissection is a diagnostic and potentially curative treatment for penile carcinoma, which has historically been associated with high morbidity rates. This review summarizes the initial outcomes of robotic-assisted inguinal lymphadenectomy (RAIL) compared with the outcomes of the standard open and endoscopic approaches. The early experience suggests that RAIL may yield comparable oncologic outcomes, although future prospective studies of RAIL with greater numbers of participants and long-term follow-up are needed to evaluate the incidence and severity of perioperative and postoperative complications. PMID:24756453

  17. Sustaining the benefits of rural water supply investments: Experience from Cochabamba and Chuquisaca, Bolivia

    NASA Astrophysics Data System (ADS)

    Davis, Jennifer; Lukacs, Heather; Jeuland, Marc; Alvestegui, Alfonso; Soto, Betty; LizáRraga, Gloria; Bakalian, Alex; Wakeman, Wendy

    2008-12-01

    Many rural water supply interventions in developing countries have been marked by a poor record of sustainability. Considerable progress has been made over the past several decades on the development of lower-cost technologies that are easier for communities in developing countries to maintain and also on improving project design and implementation to enhance sustainability of outcomes. Less attention has been given to the necessary and sufficient supports for water system maintenance in the postconstruction period. This study explores the contribution of various types of postconstruction support (PCS) to the sustainability of rural water supply systems in Bolivia. Using regression and matched pair statistical analyses, the effects of PCS on water system performance and user satisfaction with service are modeled. Communities that received management-oriented PCS visits from external agencies, and those whose system operators attended training workshops, had better performing systems than communities that received no such support. Engineering-oriented PCS visits to communities had no measurable impact on system functioning or user satisfaction.

  18. Chemistry Graduate Teaching Assistants' Experiences in Academic Laboratories and Development of a Teaching Self-image

    NASA Astrophysics Data System (ADS)

    Gatlin, Todd Adam

    Graduate teaching assistants (GTAs) play a prominent role in chemistry laboratory instruction at research based universities. They teach almost all undergraduate chemistry laboratory courses. However, their role in laboratory instruction has often been overlooked in educational research. Interest in chemistry GTAs has been placed on training and their perceived expectations, but less attention has been paid to their experiences or their potential benefits from teaching. This work was designed to investigate GTAs' experiences in and benefits from laboratory instructional environments. This dissertation includes three related studies on GTAs' experiences teaching in general chemistry laboratories. Qualitative methods were used for each study. First, phenomenological analysis was used to explore GTAs' experiences in an expository laboratory program. Post-teaching interviews were the primary data source. GTAs experiences were described in three dimensions: doing, knowing, and transferring. Gains available to GTAs revolved around general teaching skills. However, no gains specifically related to scientific development were found in this laboratory format. Case-study methods were used to explore and illustrate ways GTAs develop a GTA self-image---the way they see themselves as instructors. Two general chemistry laboratory programs that represent two very different instructional frameworks were chosen for the context of this study. The first program used a cooperative project-based approach. The second program used weekly, verification-type activities. End of the semester interviews were collected and served as the primary data source. A follow-up case study of a new cohort of GTAs in the cooperative problem-based laboratory was undertaken to investigate changes in GTAs' self-images over the course of one semester. Pre-semester and post-semester interviews served as the primary data source. Findings suggest that GTAs' construction of their self-image is shaped through the

  19. Robot-assisted ureterocalycostomy: A single centre contemporary experience in adults

    PubMed Central

    Chhabra, Jaspreet S.; Balaji Sudharsan, S.; Singh, Abhishek; Mishra, Shashikant; Ganpule, Arvind; Sabnis, Ravindra; Desai, Mahesh R.

    2016-01-01

    Objective To present our technique and experience of robot-assisted ureterocalycostomy (RAUC) in managing secondary pelvi-ureteric junction obstruction (PUJO) in adults. Patients and methods We retrospectively reviewed all patients from our centre who underwent RAUC, between 2011 and 2015, for secondary PUJO resulting from previous surgical intervention. Six procedures in five patients, including a bilateral RAUC were performed. The median (range) patient age was 33.7 (18–41) years. The outcome variables included operative time, duration of hospital stay, and objective evidence of unimpeded drainage on urography. Results The mean (range) operating time was 172 (144–260) min and estimated blood loss was 100 (50–250) mL. There were no conversions to open or laparoscopic surgery, and no intraoperative complications. Two patients had Clavien–Dindo Grade I complications that were managed conservatively and one patient had a Grade IIIb complication, which required balloon dilatation and re-stenting. After a median (range) follow-up of 11 (7–48) months, five of the six renal units had successful outcomes. Conclusion The robot-assisted approach appears to be ideally suited for redo cases demanding fine dissection with meticulous suturing. In our present series of adult patients, we could safely and successfully perform RAUC with minimal morbidity. However, a larger multi-institutional outcome analysis is required to substantiate the role of the robot-assisted approach in performing UC. PMID:26966590

  20. Hand-assisted laparoscopic nephrectomy and nephroureterectomy: our experience in Hospital Universiti Kebangsaan Malaysia.

    PubMed

    Ho, C C K; Zulkifli, M Z; Nazri, J; Sundram, M

    2008-03-01

    Hand-assisted laparoscopic nephrectomy (HAL-N) and nephroureterectomy (HAL-NU) were introduced to bridge the gap between open and laparoscopic surgery. This newer technique has the benefits of both laparoscopic and open surgical approaches but has a shorter learning curve and decreased operative time compared to laparoscopic surgery. A review of our 2-year experience showed that for the seventeen cases of HAL-N that was performed, the mean operative time was 187.8 minutes while the mean length of hospital stay was 4.1 days. For the two HAL-NU cases, the mean operative time was 415 minutes while the mean length of hospital stay was 5.5 days. Only one complication occurred and it was an incisional hernia at the hand-port site. There was no recurrence for the carcinoma cases. Our experience shows that this technique is feasible and safe. PMID:18935731

  1. Impact of Robotic Fellowship Experience on Perioperative Outcomes of Robotic-Assisted Laparoscopic Partial Nephrectomy

    PubMed Central

    Moriarty, Michael A.; Nepple, Kenneth G.; Tracy, Chad R.; Strigenz, Michael E.; Lee, Daniel K.; Brown, James A.

    2016-01-01

    Background We analyzed differences in patient selection and perioperative outcomes between robotic-fellowship trained and non-fellowship trained surgeons in their initial experience with robotic-assisted laparoscopic partial nephrectomy. Methods Data through surgeon case 10 was analyzed. Forty patients were identified from two fellowship trained surgeons (n = 20) and two non-fellowship trained surgeons (n = 20). Results Fellowship trained surgeons performed surgery on masses of higher nephrometry score (8.0 vs. 6.0, p = 0.007) and more posterior location (60 vs. 25%, p = 0.03). Retroperitoneal approach was more common (50 vs. 0%, p = 0.0003). Fellowship trained surgeons trended toward shorter warm ischemia time (25.5 vs. 31.0 min, p = 0.08). There was no significant difference in perioperative complications (35 vs. 35%, p = 0.45) or final positive margin rates (0 vs. 15%, p = 0.23). Conclusion Fellowship experience may allow for treating more challenging and posterior tumors in initial practice and significantly more comfort performing retroperitoneal robotic-assisted laparoscopic partial nephrectomy. PMID:26989366

  2. An expert system for fault management assistance on a space sleep experiment

    NASA Technical Reports Server (NTRS)

    Atamer, A.; Delaney, M.; Young, L. R.

    2002-01-01

    The expert system, Principal Investigator-in-a-box, or [PI], was designed to assist astronauts or other operators in performing experiments outside their expertise. Currently, the software helps astronauts calibrate instruments for a Sleep and Respiration Experiment without contact with the investigator on the ground. It flew on the Space Shuttle missions STS-90 and STS-95. [PI] displays electrophysiological signals in real time, alerts astronauts via the indicator lights when a poor signal quality is detected, and advises astronauts how to restore good signal quality. Thirty subjects received training on the sleep instrumentation and the [PI] interface. A beneficial effects of [PI] and training reduced troubleshooting time. [PI] benefited subjects on the most difficult scenarios, even though its lights were not 100% accurate. Further, questionnaires showed that most subjects preferred monitoring waveforms with [PI] assistance rather than monitoring waveforms alone. This study addresses problems of complex troubleshooting and the extended time between training and execution that is common to many human operator situations on earth such as in power plant operation, and marine exploration.

  3. Realization of an entanglement-assisted quantum delayed-choice experiment

    NASA Astrophysics Data System (ADS)

    Xin, Tao; Li, Hang; Wang, Bi-Xue; Long, Gui-Lu

    2015-08-01

    The puzzling properties of quantum mechanics, i.e., wave-particle duality, entanglement, and superposition, have been dissected experimentally over the past decades. However, hidden-variable (HV) models based on three classical assumptions of wave-particle objectivity, determinism, and independence strive to explain the same experiments or even defeat quantum mechanics. Meanwhile, the steady development of quantum technologies continues to enable us to test experimentally the predictions of quantum mechanics and HV theories. We report an experimental demonstration of an entanglement-assisted quantum delayed-choice scheme using a liquid nuclear magnetic resonance quantum-information processor. This experiment is based on the recently proposed scheme [R. Ionicioiu et al., Nat. Commun. 5. 3997 (2014), 10.1038/ncomms5997], which predicted different results for quantum mechanics and HV theories. In our experiments, the intensities and the visibilities of the interference are consistent with the theoretical predictions of quantum mechanics. The results show that a contradiction with the experiments is indeed appearing when all three assumptions of the HV models are combined, though any two of those assumptions are compatible with the experiments.

  4. Energy supply and environmental issues: The Los Alamos National Laboratory experience in regional and international programs

    SciTech Connect

    Goff, S.J.

    1995-12-31

    The Los Alamos National Laboratory, operated by the University of California, encompasses more than forty-three square miles of mesas and canyons in northern New Mexico. A Department of Energy national laboratory, Los Alamos is one of the largest multidisciplinary, multiprogram laboratories in the world. Our mission, to apply science and engineering capabilities to problems of national security, has expanded to include a broad array of programs. We conduct extensive research in energy, nuclear safeguards and security, biomedical science, computational science, environmental protection and cleanup, materials science, and other basic sciences. The Energy Technology Programs Office is responsible for overseeing and developing programs in three strategic areas: energy systems and the environment, transportation and infrastructure, and integrated chemicals and materials processing. Our programs focus on developing reliable, economic and environmentally sound technologies that can help ensure an adequate supply of energy for the nation. To meet these needs, we are involved in programs that range from new and enhanced oil recovery technologies and tapping renewable energy sources, through efforts in industrial processes, electric power systems, clean coal technologies, civilian radioactive waste, high temperature superconductivity, to studying the environmental effects of energy use.

  5. Simulation and experiment research on the proportional pressure control of water-assisted injection molding

    NASA Astrophysics Data System (ADS)

    Zhou, Hua; Chen, Yinglong; Zhang, Zengmeng; Yang, Huayong

    2012-05-01

    Water-assisted injection molding (WAIM), a newly developed fluid-assisted injection molding technology has drawn more and more attentions for the energy saving, short cooling circle time and high quality of products. Existing research for the process of WAIM has shown that the pressure control of the injecting water is mostly important for the WAIM. However, the proportional pressure control for the WAIM system is quite complex due to the existence of nonlinearities in the water hydraulic system. In order to achieve better pressure control performance of the injecting water to meet the requirements of the WAIM, the proportional pressure control of the WAIM system is investigated both numerically and experimentally. A newly designed water hydraulic system for WAIM is first modeled in AMEsim environment, the load characteristics and the nonlinearities of water hydraulic system are both considered, then the main factors affecting the injecting pressure and load flow rate are extensively studied. Meanwhile, an open-loop model-based compensation control strategy is employed to regulate the water injection pressure and a feedback proportional integrator controller is further adopted to achieve better control performance. In order to verify the AMEsim simulation results WAIM experiment for particular Acrylonitrile Butadiene Styrene (ABS) parts is implemented and the measured experimental data including injecting pressure and flow rate results are compared with the simulation. The good coincidence between experiment and simulation shows that the AMEsim model is accurate, and the tracking performance of the load pressure indicates that the proposed control strategy is effective for the proportional pressure control of the nonlinear WAIM system. The proposed proportional pressure control strategy and the conclusions drawn from simulation and experiment contribute to the application of water hydraulic proportional control and WAIM technology.

  6. Evaluation of negative pressure vacuum-assisted system in acute and chronic wounds closure: our experience.

    PubMed

    Chiummariello, S; Guarro, G; Pica, A; Alfano, C

    2012-10-01

    Negative-pressure therapy or vacuum-assisted closure (VAC) has been used in clinical applications since the 1940's and has increased in popularity over the past decade. This dressing technique consists of an open cell foam dressing put into the wound cavity, a vacuum pump produces a negative pressure and an adhesive drape. A controlled sub atmospheric pressure from 75 to 150 mmHg is applied. The vacuum-assisted closure has been applied by many clinicians to chronic wounds in humans; however it cannot be used as a replacement for surgical debridement. The initial treatment for every contaminated wound should be the necrosectomy. The VAC therapy has a complementary function and the range of its indications includes pressure sores, stasis ulcers, chronic wounds such as diabetic foot ulcers, post traumatic and post operative wounds, infected wounds such as necrotizing fasciitis or sternal wounds, soft-tissue injuries, bone exposed injuries, abdominal open wounds and for securing a skin graft. We describe our experience with the VAC dressing used to manage acute and chronic wounds in a series of 135 patients, with excellent results together with satisfaction of the patients. PMID:23095568

  7. Code Sharing and Collaboration: Experiences From the Scientist's Expert Assistant Project and Their Relevance to the Virtual Observatory

    NASA Technical Reports Server (NTRS)

    Korathkar, Anuradha; Grosvenor, Sandy; Jones, Jeremy; Li, Connie; Mackey, Jennifer; Neher, Ken; Obenschain, Arthur F. (Technical Monitor)

    2001-01-01

    In the Virtual Observatory (VO), software tools will perform the functions that have traditionally been performed by physical observatories and their instruments. These tools will not be adjuncts to VO functionality but will make up the very core of the VO. Consequently, the tradition of observatory and system independent tools serving a small user base is not valid for the VO. For the VO to succeed, we must improve software collaboration and code sharing between projects and groups. A significant goal of the Scientist's Expert Assistant (SEA) project has been promoting effective collaboration and code sharing among groups. During the past three years, the SEA project has been developing prototypes for new observation planning software tools and strategies. Initially funded by the Next Generation Space Telescope, parts of the SEA code have since been adopted by the Space Telescope Science Institute. SEA has also supplied code for the SIRTF (Space Infrared Telescope Facility) planning tools, and the JSky Open Source Java library. The potential benefits of sharing code are clear. The recipient gains functionality for considerably less cost. The provider gains additional developers working with their code. If enough users groups adopt a set of common code and tools, de facto standards can emerge (as demonstrated by the success of the FITS standard). Code sharing also raises a number of challenges related to the management of the code. In this talk, we will review our experiences with SEA--both successes and failures, and offer some lessons learned that might promote further successes in collaboration and re-use.

  8. Monte Carlo simulations of multiple scattering effects in laser assisted free-free scattering experiments

    NASA Astrophysics Data System (ADS)

    Deharak, B. A.; Savich, J. L.; Roberts, H. M.; Brown, E. G.; McGill, M. R.; Kim, B. N.; Weaver, C. M.; Martin, N. L. S.

    2016-05-01

    We have conducted a series of Monte Carlo simulations of laser assisted free-free scattering experiments. The simulations make use of Kroll-Watson approximation to account for the effects of the laser field on the scattering process. The parameters for these simulations are believed to mimic the experimental conditions of the work reported by Wallbank and Holmes, particularly the target number density. The simulations account for the effects multiple scattering (i.e., the scattering of a single incident electron from multiple target atoms). We present a comparison of the results of these simulations to the experimental results of Wallbank and Holmes. This work was supported by the National Science Foundation under Grants Nos. PHY-0855040 (NLSM) and PHY-1402899 (BAd).

  9. Experiments on Ball and Roller Bearings Under Conditions of High Speed and Small Oil Supply

    NASA Technical Reports Server (NTRS)

    Getzlaff, Gunter

    1940-01-01

    This report describes a testing machine on which 35 millimeter bearings (bore) can be run at speeds of the order of 21,000 rpm, while the following factors are recorded: 1) oil circulation through bearing and oil temperature. 2) maximum temperature of outer bearing ring, 3) radial and axial load on bearing, 4) radial, axial, and angular clearance of bearing, 5) power consumption of bearing. The experiments show that the lubrication was most reliable and oil consumption lowest when the oil was introduced through a hole in the outer or inner ring of the bearing.

  10. Effects of varied nitrate and phosphate supply on polysaccharidic and proteinaceous gel particle production during tropical phytoplankton bloom experiments

    NASA Astrophysics Data System (ADS)

    Engel, A.; Borchard, C.; Loginova, A.; Meyer, J.; Hauss, H.; Kiko, R.

    2015-10-01

    Gel particles such as the polysaccharidic transparent exopolymer particles (TEP) and the proteinaceous Coomassie stainable particles (CSP) play an important role in marine biogeochemical and ecological processes like particle aggregation and export, or microbial nutrition and growth. So far, effects of nutrient availability or of changes in nutrient ratios on gel particle production and fate are not well understood. The tropical ocean includes large oxygen minimum zones, where nitrogen losses due to anaerobic microbial activity result in a lower supply of nitrate relative to phosphate to the euphotic zone. Here, we report of two series of mesocosm experiments that were conducted with natural plankton communities collected from the eastern tropical North Atlantic (ETNA) close to Cape Verde in October 2012. The experiments were performed to investigate how different phosphate (experiment 1, Varied P: 0.15-1.58 μmol L-1) or nitrate (experiment 2, Varied N: 1.9-21.9 μmol L-1) concentrations affect the abundance and size distribution of TEP and CSP. In the days until the bloom peak was reached, a positive correlation between gel particle abundance and Chl a concentration was determined, linking the release of dissolved gel precursors and the subsequent formation of gel particles to autotrophic production. After the bloom peak, gel particle abundance remained stable or even increased, implying a continued partitioning of dissolved into particulate organic matter after biomass production itself ceased. During both experiments, differences between TEP and CSP dynamics were observed; TEP were generally more abundant than CSP. Changes in size distribution indicated aggregation of TEP after the bloom, while newly formed CSP decomposed. Abundance of gel particles clearly increased with nitrate concentration during the second experiment, suggesting that changes in [DIN] : [DIP] ratios can affect gel particle formation with potential consequences for carbon and nitrogen

  11. Responses of estuarine nematodes to an increase in nutrient supply: an in situ continuous addition experiment.

    PubMed

    Ferreira, R C; Nascimento-Junior, A B; Santos, P J P; Botter-Carvalho, M L; Pinto, T K

    2015-01-15

    An experiment was carried out on an estuarine mudflat to assess impacts of inorganic nutrients used to fertilize sugar-cane fields on the surrounding aquatic ecosystem, through changes in the nematode community structure. During 118 days, nine quadrats each 4m(2) were sampled six times after the beginning of fertilizer addition. The fertilizer was introduced weekly in six areas, at two different concentrations (low and high doses), and three areas were used as control. The introduction of nutrients modified key nematode community descriptors. In general, the nematodes were negatively affected over the study period. However, Comesa, Metachromadora, Metalinhomoeus, Spirinia and Terschellingia were considered tolerant, and other genera showed different degrees of sensitivity. Nutrient input also affect the availability and quality of food, changing the nematode trophic structure. The use of inorganic fertilizer should be evaluated with care because of the potential for damage to biological communities of coastal aquatic systems. PMID:25499965

  12. [Our experiences in the blood supply by means of a blood bank].

    PubMed

    Rajcić, E

    1975-01-01

    "GIVE US BLOOD TODAY, YOU'LL GET IT WHEN YOU NEED IT". Under this slogan the blood transfusion service gathers the blood donors offering, in return for the given blood the security that, any moment and in required quantities, the blood will be provided for every donor i.e. every member of any collective that acts on the request and "deposits" blood in so called blood banks", at least twice a year. Agitation among the prospective blood donors is completely confided to prominent people, social and medical workers, who do it permanently, and not from time to time, and who, if possible, are also blood donors, and owing to their own example, more convincing. The obligations between the blood transfusion service and "the investors" are regulated by oral agreement. It is noticed that the mutual moral obligation has more positive influence on the fulfillment of obligation than the administrative measure--a contract. According to this experience, individual work, a personal contact with prospective blood donors, and the feeling of personal security that is offered to them give the best results in motivating the people to become blood donors. PMID:1225312

  13. Becoming physics people: Development of integrated physics identity through the Learning Assistant experience

    NASA Astrophysics Data System (ADS)

    Close, Eleanor W.; Conn, Jessica; Close, Hunter G.

    2016-06-01

    [This paper is part of the Focused Collection on Preparing and Supporting University Physics Educators.] In this study, we analyze the experience of students in the Physics Learning Assistant (LA) program at Texas State University in terms of the existing theoretical frameworks of community of practice and physics identity, and explore the implications suggested by these theories for LA program adoption and adaptation. Regression models from physics identity studies show that the physics identity construct strongly predicts intended choice of a career in physics. The goal of our current project is to understand the details of the impacts of participation in the LA experience on participants' practice and self-concept, in order to identify critical elements of LA program structure that positively influence physics identity and physics career intentions for students. Our analysis suggests that participation in the LA program impacts LAs in ways that support both stronger "physics student" identity and stronger "physics instructor" identity, and that these identities are reconciled into a coherent integrated physics identity. Increased comfort in interactions with peers, near peers, and faculty seems to be an important component of this identity development and reconciliation, suggesting that a focus on supporting community membership is useful for effective program design.

  14. Trainees Can Safely Learn Video-Assisted Thoracic Surgery Lobectomy despite Limited Experience in Open Lobectomy

    PubMed Central

    Yu, Woo Sik; Lee, Chang Young; Lee, Seokkee; Kim, Do Jung; Chung, Kyung Young

    2015-01-01

    Background The aim of this study was to establish whether pulmonary lobectomy using video-assisted thoracic surgery (VATS) can be safely performed by trainees with limited experience with open lobectomy. Methods Data were retrospectively collected from 251 patients who underwent VATS lobectomy at a single institution between October 2007 and April 2011. The surgical outcomes of the procedures that were performed by three trainee surgeons were compared to the outcomes of procedures performed by a surgeon who had performed more than 150 VATS lobectomies. The cumulative failure graph of each trainee was used for quality assessment and learning curve analysis. Results The surgery time, estimated blood loss, final pathologic stage, thoracotomy conversion rate, chest tube duration, duration of hospital stay, complication rate, and mortality rate were comparable between the expert surgeon and each trainee. Cumulative failure graphs showed that the performance of each trainee was acceptable and that all trainees reached proficiency in performing VATS lobectomy after 40 cases. Conclusion This study shows that trainees with limited experience with open lobectomy can safely learn to perform VATS lobectomy for the treatment of lung cancer under expert supervision without compromising outcomes. PMID:25883893

  15. Minimally invasive video-assisted thyroidectomy: experience of 200 cases in a single center

    PubMed Central

    Jie, Xu; Lixin, Jiang

    2014-01-01

    Introduction Minimally invasive techniques in thyroid surgery including video-assisted technique originally described by Miccoli have been accepted in several continents for more than 10 years. Aim To analyze our preliminary results from minimally invasive video-assisted thyroidectomy (MIVAT) and to evaluate the feasibility and effects of this method in a general department over a 4-year period. Material and methods Initial experience was presented based on a series of 200 patients selected for MIVAT at the General Surgery Department of Yantai Yuhuangding Hospital affiliated with Qingdao University during the period from May 2008 to June 2012. The enrolling criteria were rigorously observed. An above sternal incision with average length of 2.5 cm (1.5–3.0 cm) was made. Clinicopathologic characteristics, postoperative pain, length of hospital stay, cosmetic results and complications were retrospectively analyzed. Results All patients received general anesthesia. Thyroid unilateral lobectomy was successfully accomplished in 108 cases, total thyroidectomy in 84, and partial lobectomy in 8. Conversion to standard conventional thyroidectomy was required in 6 patients (3%) because of thyroiditis and bleeding. The mean lymph node yield of the cancer specimens was 3.6 per patient. Permanent unilateral recurrent laryngeal nerve (RLN) palsy occurred in 1 case (0.5%), transient unilateral RLN palsy in 6 patients (3.0%, complete recovery after 1–6 months), and transient hypocalcemia in 7 patients (3.5%). No definitive hypocalcemia was observed. No postoperative hematomas occurred. Postoperative pain was endurable. The cosmetic result was excellent in most cases. Conclusions The MIVAT is feasible and safe in selected patients, with better results comparable to conventional thyroidectomy. The MIVAT can also be performed in a general surgery department. PMID:25337155

  16. Roles of National and Local Governments and the Dietetic Association in Nutrition Assistance Response to Natural Disasters: Systems and Experiences in Japan and the USA.

    PubMed

    Sudo, Noriko

    2015-01-01

    In the first half of this symposium, the disaster response system in Japan will be introduced. The ultimate aim of nutrition assistance is to keep people in disaster areas healthy. This is a task for the Ministry of Health, Labour and Welfare and the health departments of prefectural governments. Our first speaker, Dr. Yasuhiro Kanatani, National Institute of Public Health, will briefly overview the disaster response system in Japan and its related laws. He will also mention how the Ministry responded to the Great East Japan Earthquake. In the second presentation, I will play one chapter of DVD that we released in last September. In that chapter, Ms. Makiko Sawaguchi, a registered dietitian working for a public health center in the area affected by the Great East Japan Earthquake, talks about her experience in supporting disaster victims. As an employee of Iwate Prefectural Government, she helped affected municipal governments and coordinated outside support. One type of outside support was registered dietitians dispatched by the Japan Dietetic Association (JDA). Dr. Nobuyo Tsuboyama-Kasaoka will report what those dietitians did in the affected areas. She will also explain the aim and training of the JDA-Disaster Assistance Team. Provision of food is essential in nutrition assistance. This is a task for the Ministry of Agriculture, Forestry and Fisheries. Our fourth speaker, Mr. Kunihiro Doi, analyzed the government procurement data and will discuss the limitations of government emergency food supplies and lessons learned from the Great East Japan Earthquake. As for the systems and experiences in the US, we invited Ms. Toni Abernathy from the Office of Emergency Management, Food and Nutrition Service (FNS), United States Department of Agriculture. PMID:26598825

  17. Implant assisted-magnetic drug targeting: Comparison of in vitro experiments with theory

    NASA Astrophysics Data System (ADS)

    Avilés, Misael O.; Ebner, Armin D.; Ritter, James A.

    Implant assisted-magnetic drug targeting (IA-MDT) was studied both in vitro and theoretically, with extensive comparisons made between model and experiment. Magnetic drug carrier particles (MDCPs) comprised of magnetite encased in a polymer were collected magnetically using a ferromagnetic, coiled, wire stent as the implant and a NdFeB permanent magnet for the applied magnetic field. A 2-D mathematical model with no adjustable parameters was developed and compared to the 3-D experimental results. The effects of the fluid velocity, stent and MDCP properties, and magnetic field strength on the performance of the system were evaluated in terms of the capture efficiency (CE) of the MDCPs. In nearly all cases, the parametric trends predicted by the model were in good agreement with the experimental results: the CE always increased with decreasing velocity, increasing magnetic field strength, increasing MDCP size or magnetite content, or increasing wire size. The only exception was when experiments showed an increase in the CE with an increase in the number of loops in the wire, while the model showed no dependence. The discrepancies between experiment and theory were attributed to phenomena not accounted for by the model, such as 3-D to 2-D geometric and magnetic field orientation differences, and interparticle interactions between the MDCPs that lead to magnetic agglomeration and shearing force effects. Overall, this work showed the effectiveness of a stent-based IA-MDT system through both in vitro experimentation and corroborated theory, with the designs of the ferromagnetic wire and the MDCPs both being paramount to the CE.

  18. Effects of nitrogen supply on Pseudo-nitzschia calliantha and Pseudo-nitzschia cf. seriata: field and laboratory experiments.

    PubMed

    Melliti Ben Garali, Sondes; Sahraoui, Inès; de la Iglesia, Pablo; Chalghaf, Mohamed; Diogène, Jorge; Ksouri, Jamel; Sakka Hlaili, Asma

    2016-08-01

    The effects of inorganic and organic nitrogen supply on the growth and domoic acid (DA) production of Pseudo-nitzschia cf. seriata and Pseudo-nitzschia calliantha from Bizerte Lagoon (SW Mediterranean Sea) were studied during field and laboratory experiments. Nitrogen enrichments (40 µM NO3 (-); 10 µM NH4 (+); 20 µM CH4N2O) and a control, with no added N, were carried out in separate carboys with seawater collected from Bizerte Lagoon. In the field experiments, all N-enrichments resulted in significant increases in chlorophyll a concentration, and maintained exponential growth until the end of the experiment. The initial diatom community was dominated by a bloom of P. cf. seriata (9.3 × 10(5) cells l(-1)). After 6 days of incubation, the abundance of P. cf. seriata was greatest in the urea addition (1.52 × 10(6) cells l(-1)), compared to the ammonium treatment (0.47 × 10(6) cells l(-1)), nitrate treatment (0.70 × 10(6) cells l(-1)) and control (0.36 × 10(6) cells l(-1)). The specific growth rates, calculated from increases in chlorophyll a and cell abundance, were statistically different across all treatments, with the highest in the urea and nitrate additions. Similar results were obtained from the laboratory experiments. These were carried out with P. calliantha isolated from Bizerte Lagoon and grown in f/2 medium enriched with 40 µM nitrate, 10 µM ammonium and 20 µM urea. The exponential growth rate was significantly faster for the cells cultured with urea (1.50 d(-1)) compared to the nitrate (0.90 d(-1)) and ammonium (0.80 d(-1)) treatments and the control (0.40 d(-1)). Analysis of DA, performed at the beginning and the end of the both experiments in all treatments, revealed very low concentrations (below the limit of quantification, 0.02- 1.310(-7) pg cell(-1), respectively).The field and laboratory experiments demonstrate that P.cf. seriata and P. calliantha are able to grow efficiently on the three forms of N, but with a

  19. Children's experiences of food insecurity can assist in understanding its effect on their well-being.

    PubMed

    Connell, Carol L; Lofton, Kristi L; Yadrick, Kathy; Rehner, Timothy A

    2005-07-01

    An understanding of the experience of food insecurity by children is essential for better measurement and assessment of its effect on children's nutritional, physical, and mental health. Our qualitative study explored children's perceptions of household food insecurity to identify these perceptions and to use them to establish components of children's food insecurity experience. Children (n = 32; 11-16 y old) from after school programs and a middle school in low-income areas participated in individual semistructured in-depth interviews. Children as young as 11 y could describe behaviors associated with food insecurity if they had experienced it directly or indirectly. Using the constant comparative method of qualitative data analysis, children's descriptions of behaviors associated with food insecurity were categorized into components of quantity of food, quality of food, psychological aspects, and social aspects described in the household food insecurity literature. Aspects of quantity included eating less than usual and eating more or eating fast when food was available. Aspects of quality included use of a few kinds of low-cost foods. Psychological aspects included worry/anxiety/sadness about the family food supply, feelings of having no choice in the foods eaten, shame/fear of being labeled as poor, and attempts to shield children. Social aspects of food insecurity centered on using social networks to acquire food or money and social exclusion. These results provide valuable information in understanding the effect of food insecurity on children's well-being especially relative to the social and emotional aspects of well-being. PMID:15987850

  20. Lifelong Learning: Teaching Assistants' Experiences of Economic, Social and Cultural Change Following Completion of a Foundation Degree

    ERIC Educational Resources Information Center

    Woolhouse, Clare; Dunne, Linda; Goddard, Gill

    2009-01-01

    This paper stems from a longitudinal research project that explored the perceptions and experiences of teaching assistants (predominantly women) who have undertaken a foundation degree. It draws upon Bourdieu's notion of habitus and investigates shifts in economic, cultural and social capital for this particular group of educational professionals.…

  1. Toward Transformative Learning: An Inquiry into the Work and Subsequent Learning Experiences of Individuals Who Assisted Hurricane Katrina Evacuees

    ERIC Educational Resources Information Center

    Ficks, David B., II.

    2010-01-01

    The purpose of this multi-case study was to examine in depth the personal and learning experiences of helping professionals and volunteer helpers when challenged to assist adult Hurricane Katrina evacuees and victims in the aftermath of the disaster. The study contributes theoretically, practically and substantively to the adult education field.…

  2. Effects of varied nitrate and phosphate supply on polysaccharidic and proteinaceous gel particles production during tropical phytoplankton bloom experiments

    NASA Astrophysics Data System (ADS)

    Engel, A.; Borchard, C.; Loginova, A.; Meyer, J.; Hauss, H.; Kiko, R.

    2015-04-01

    It has been suggested that oxygen minimum zones (OMZ) will expand in the tropical oceans as a result of global change with potential consequences for marine element cycling, such as an increase in anaerobic nitrogen loss, resulting in a lower supply of nitrate relative to phosphate to the euphotic zone. So far, the effects of changes in nutrient ratios on organic matter recycling and export fluxes are not well understood. Here, were investigated how different phosphate (Varied P: 0.15-1.58 μmol L-1) or nitrate (Varied N: 1.9-21.9 μmol L-1) concentrations affect the abundance and size distribution of polysaccharidic transparent exopolymer particles (TEP), which are suggested to enhance particle aggregation and export fluxes, and on proteinaceous coomassie stainable particles (CSP), a supposedly good substrate for heterotrophic bacteria. Two series of mesocosm bloom experiments were conducted with natural plankton communities collected from the Eastern Tropical North Atlantic (ETNA) close to Cape Verde in October 2012. Until bloom peak, a positive correlation between gel particle abundance and Chl a concentration was determined, linking the release of dissolved gel precursors and the subsequent formation of gel particles to autotrophic production. After bloom peak, gel particle abundance remained stable or even increased, implying a continued partitioning of dissolved into particulate organic matter after biomass production itself ceased. During both experiments, differences between TEP and CSP dynamics were observed; TEP were generally more abundant than CSP. Changes in size distribution indicated aggregation of TEP during the bloom, while newly formed CSP decomposed. Abundance of gel particles clearly increased with nitrate concentration during the second experiment, suggesting that changes in [DIN]:[DIP] ratios can affect gel particle formation with potential consequences for carbon and nitrogen cycling as well as food web dynamics in tropical ecosystems.

  3. Hands-On Experiences in Deploying Cost-Effective Ambient-Assisted Living Systems

    PubMed Central

    Dasios, Athanasios; Gavalas, Damianos; Pantziou, Grammati; Konstantopoulos, Charalampos

    2015-01-01

    Older adults’ preferences to remain independent in their own homes along with the high costs of nursing home care have motivated the development of Ambient Assisted Living (AAL) technologies which aim at improving the safety, health conditions and wellness of the elderly. This paper reports hands-on experiences in designing, implementing and operating UbiCare, an AAL based prototype system for elderly home care monitoring. The monitoring is based on the recording of environmental parameters like temperature and light intensity as well as micro-level incidents which allows one to infer daily activities like moving, sitting, sleeping, usage of electrical appliances and plumbing components. The prototype is built upon inexpensive, off-the-shelf hardware (e.g., various sensors, Arduino microcontrollers, ZigBee-compatible wireless communication modules) and license-free software, thereby ensuring low system deployment costs. The network comprises nodes placed in a house’s main rooms or mounted on furniture, one wearable node, one actuator node and a centralized processing element (coordinator). Upon detecting significant deviations from the ordinary activity patterns of individuals and/or sudden falls, the system issues automated alarms which may be forwarded to authorized caregivers via a variety of communication channels. Furthermore, measured environmental parameters and activity incidents may be monitored through standard web interfaces. PMID:26094631

  4. Hands-On Experiences in Deploying Cost-Effective Ambient-Assisted Living Systems.

    PubMed

    Dasios, Athanasios; Gavalas, Damianos; Pantziou, Grammati; Konstantopoulos, Charalampos

    2015-01-01

    Older adults' preferences to remain independent in their own homes along with the high costs of nursing home care have motivated the development of Ambient Assisted Living (AAL) technologies which aim at improving the safety, health conditions and wellness of the elderly. This paper reports hands-on experiences in designing, implementing and operating UbiCare, an AAL based prototype system for elderly home care monitoring. The monitoring is based on the recording of environmental parameters like temperature and light intensity as well as micro-level incidents which allows one to infer daily activities like moving, sitting, sleeping, usage of electrical appliances and plumbing components. The prototype is built upon inexpensive, off-the-shelf hardware (e.g., various sensors, Arduino microcontrollers, ZigBee-compatible wireless communication modules) and license-free software, thereby ensuring low system deployment costs. The network comprises nodes placed in a house's main rooms or mounted on furniture, one wearable node, one actuator node and a centralized processing element (coordinator). Upon detecting significant deviations from the ordinary activity patterns of individuals and/or sudden falls, the system issues automated alarms which may be forwarded to authorized caregivers via a variety of communication channels. Furthermore, measured environmental parameters and activity incidents may be monitored through standard web interfaces. PMID:26094631

  5. Assessment of Initial Test Conditions for Experiments to Assess Irradiation Assisted Stress Corrosion Cracking Mechanisms

    SciTech Connect

    Busby, Jeremy T; Gussev, Maxim N

    2011-04-01

    Irradiation-assisted stress corrosion cracking is a key materials degradation issue in today s nuclear power reactor fleet and affects critical structural components within the reactor core. The effects of increased exposure to irradiation, stress, and/or coolant can substantially increase susceptibility to stress-corrosion cracking of austenitic steels in high-temperature water environments. . Despite 30 years of experience, the underlying mechanisms of IASCC are unknown. Extended service conditions will increase the exposure to irradiation, stress, and corrosive environment for all core internal components. The objective of this effort within the Light Water Reactor Sustainability program is to evaluate the response and mechanisms of IASCC in austenitic stainless steels with single variable experiments. A series of high-value irradiated specimens has been acquired from the past international research programs, providing a valuable opportunity to examine the mechanisms of IASCC. This batch of irradiated specimens has been received and inventoried. In addition, visual examination and sample cleaning has been completed. Microhardness testing has been performed on these specimens. All samples show evidence of hardening, as expected, although the degree of hardening has saturated and no trend with dose is observed. Further, the change in hardening can be converted to changes in mechanical properties. The calculated yield stress is consistent with previous data from light water reactor conditions. In addition, some evidence of changes in deformation mode was identified via examination of the microhardness indents. This analysis may provide further insights into the deformation mode under larger scale tests. Finally, swelling analysis was performed using immersion density methods. Most alloys showed some evidence of swelling, consistent with the expected trends for this class of alloy. The Hf-doped alloy showed densification rather than swelling. This observation may be

  6. A Peer-Assisted Learning Experience in Computer Programming Language Learning and Developing Computer Programming Skills

    ERIC Educational Resources Information Center

    Altintas, Tugba; Gunes, Ali; Sayan, Hamiyet

    2016-01-01

    Peer learning or, as commonly expressed, peer-assisted learning (PAL) involves school students who actively assist others to learn and in turn benefit from an effective learning environment. This research was designed to support students in becoming more autonomous in their learning, help them enhance their confidence level in tackling computer…

  7. Course Evaluation Matters: Improving Students' Learning Experiences with a Peer-Assisted Teaching Programme

    ERIC Educational Resources Information Center

    Carbone, Angela; Ross, Bella; Phelan, Liam; Lindsay, Katherine; Drew, Steve; Stoney, Sue; Cottman, Caroline

    2015-01-01

    In the rapidly changing global higher education sector, greater attention is being paid to the quality of university teaching. However, academics have traditionally not received formal teacher training. The peer-assisted teaching programme reported on in this paper provides a structured yet flexible approach for peers to assist each other in…

  8. Peer-Assisted Tutoring in a Chemical Engineering Curriculum: Tutee and Tutor Experiences

    ERIC Educational Resources Information Center

    Kieran, Patricia; O'Neill, Geraldine

    2009-01-01

    Peer-Assisted Tutorials (PATs), a form of Peer-Assisted Learning (PAL), were introduced to a conventional 4-year honours degree programme in Chemical Engineering. PATs were designed to support students in becoming more self-directed in their learning, to develop student confidence in tackling Chemical Engineering problems and to promote effective…

  9. Comparison and modeling of effects of normal and reduced precipitation supply in field experiment with spring barley

    NASA Astrophysics Data System (ADS)

    Pohanková, Eva; Orság, Matěj; Fischer, Milan; Hlavinka, Petr

    2015-04-01

    This paper evaluates two-year (2013 and 2014) results of field experiments with spring barley (cultivar Bojos) under reduced precipitation supply. The field experiments were carried out at the experimental station in Domanínek (Czech Republic; 49°31,470'N, 16°14,400'E, altitude 530 m a.s.l.) and conducted by Institute of Agrosystems and bioclimatology at Mendel Univerzity in Brno in cooperation with Global Change Research Centre AS CR. The field experiments consisted of small plots in two variants and three repetitions. The first variant was uncovered the second was partially covered to exclude rain through out the whole vegetation season. For the partial covering of the plot, a material which transmits solar radiation and diverts rainwater away from the percentage coverage of the plots was used. In 2013, the covered area of the experimental plot was 30%, and in 2014, it was 70%. The main aim was to determine whether there are any differences in the spring barley's development, growth and yield in the uncovered and the partially covered plots, and a comparison of the results. Firstly, differences of key parameters (seasonal dynamics of the leaf area index and above ground biomass, soil water content, yield components and yields) compared; secondly, the results of the field experiments served as input data for the crop growth model DAISY. Subsequently, the crop growth model' ability to simulate crop growth and crop development which were affected by the drought stress was explored. The results were assessed using the following statistical indexes: root mean square error (RMSE) and mean bias error (MBE). This study was funded by project "Building up a multidisciplinary scientific team focused on drought" No. CZ.1.07/2.3.00/20.0248, NAZV-JPI - project supported by Czech National Agency of Agricultural Research No. QJ1310123 "Crop modelling as a tool for increasing the production potential and food security of the Czech Republic under Climate Change" and project LD

  10. Robotic-assisted partial nephrectomy without using ureteral stent: a single center experience

    PubMed Central

    Özkan, Burak; Coşkuner, Enis Rauf; Yalçın, Veli

    2016-01-01

    Objective To share our results of robotic assisted partial nephrectomy (RAPN) we performed without using ureteral stent in a single center from Turkey. Material and methods Medical records of consecutive 45 patients (34 men and 11 women) who underwent RAPN for kidney lesions between March 2011 and December 2014 were retrieved, and evaluated. All the procedures were performed by a transperitoneal approach without using ureteral stent prior to surgery. Renal artery clamping was used in all cases and intraoperative ultrasonography was used in 2 cases. Results Patients undergoing RAPN had a mean tumor size of 4.42 cm (2–8) and a mean renal nephrometry score of 5.82 (4–11). The mean estimated blood loss was 250 mL (150–450 ml) and the mean operative time was 195 minutes (150–300). There was no statistical difference between the preoperative and postoperative serum creatinine levels at the first follow-up visit (0.9 vs. 0.95, p=0.087). Surgical margin positivity was not detected in any patient, and the mean surgical margin distance was calculated as 0.4 mm (0.2–10). In only 1 patient disease recurrence was detected at the 21st month of the the follow-up period, and no distant metastases was reported in our patients at a mean follow-up of 10 months (3–36 mos). Our complication rate was 11.1% and according to the Clavien system complications were as; grade 2 (3 patients), grade 3a (1 patient) and grade 3b (1 patient). Conclusion With appropriately selected patients and adequate surgical experience, RAPN performed without using ureteral stent is a safe and feasible method for localized renal tumors. PMID:27011873

  11. Preliminary Experience With Robot-Assisted Laparoscopic Staging of Gynecologic Malignancies

    PubMed Central

    Burke, William M.; Advincula, Arnold P.

    2005-01-01

    Objective: To evaluate the feasibility of integrating robot-assisted technology in the performance of laparoscopic staging of gynecologic malignancies. Methods: Seven patients underwent robot-assisted laparoscopic staging procedures for gynecologic cancers. Data were collected and analyzed as a retrospective case series analysis. Results: We attempted 7 robot-assisted laparoscopic staging procedures with no conversions to laparotomy. The median lymph node count for lymphadenectomy was 15 (range, 4 to 29). Mean operating time was 257 minutes (range, 174 to 345). The average estimated blood loss was 50 mL. One patient developed sinusitis and required intravenous antibiotics. The median hospital stay was 2 days. Conclusion: Robot-assisted laparoscopic staging is a feasible technique that may overcome the surgical limitations of conventional laparoscopy. PMID:15984701

  12. Holmium:YAG laser-assisted otolaryngologic surgery: Lahey Clinic experience

    NASA Astrophysics Data System (ADS)

    Shapshay, Stanley M.; Rebeiz, Elie E.; Pankratov, Michail M.

    1993-07-01

    The Holmium:YAG laser was used to assist in 36 rhinologic procedures including surgery for chronic sinus disease, chronic dacryocystitis, recurrent choanal stenosis, and a sphenoid sinus mucocele. There were no laser related complications. The laser permitted controlled ablation of bone and soft tissue in all cases with satisfactory results. The Ho:YAG laser can be used in otolaryngology to assist in cases where surgical access is difficult or when controlled, precise bone and soft tissue ablation is necessary.

  13. Outcome of MRI-guided vacuum-assisted breast biopsy – initial experience at Institute of Oncology Ljubljana, Slovenia

    PubMed Central

    Zebic-Sinkovec, Marta; Hertl, Kristijana; Kadivec, Maksimiljan; Cavlek, Mihael; Podobnik, Gasper; Snoj, Marko

    2012-01-01

    Background Like all breast imaging modalities MRI has limited specificity and the positive predictive value for lesions detected by MRI alone ranges between 15 and 50%. MRI guided procedures (needle biopsy, presurgical localisation) are mandatory for suspicious findings visible only at MRI, with potential influence on therapeutic decision. The aim of this retrospective study was to evaluate our initial clinical experience with MRI-guided vacuum-assisted breast biopsy as an alternative to surgical excision and to investigate the outcome of MRI-guided breast biopsy as a function of the MRI features of the lesions. Patients and methods. In 14 women (median age 51 years) with 14 MRI-detected lesions, MRI-guided vacuum-assisted breast biopsy was performed. We evaluated the MRI findings that led to biopsy and we investigated the core and postoperative histology results and follow-up data. Results The biopsy was technically successful in 14 (93%) of 15 women. Of 14 biopsies in 14 women, core histology revealed 6 malignant (6/14, 43%), 6 benign (6/14, 43%) and 2 high-risk (2/14, 14%) lesions. Among the 6 cancer 3 were invasive and 3 were ductal carcinoma in situ (DCIS). The probability of malignancy in our experience was higher for non-mass lesion type and for washout and plateau kinetics. Conclusions Our initial experience confirms that MRI-guided vacuum-assisted biopsy is fast, safe and accurate alternative to surgical biopsy for breast lesions detected at MRI only. PMID:23077445

  14. Single-port video-assisted thoracic surgery for early lung cancer: initial experience in Japan

    PubMed Central

    Takeuchi, Shingo; Usuda, Jitsuo

    2016-01-01

    Background Single-port video-assisted thoracic surgery (SPVATS) emerged several years ago as a new, minimally invasive surgery for diseases in the field of respiratory surgery, and is increasingly becoming a subject of interest for some thoracic surgeons in Europe and Asia. However, the adoption rate of this procedure in the United States and Japan remains low. We herein reviewed our experience of SPVATS for early lung cancer in our center, and evaluated the safety and minimal invasiveness of this technique. Methods We retrospectively analyzed patients who had undergone SPVATS for pathological stage I lung cancer in Nippon Medical School Chiba Hokusoh Hospital between September 2012 and October 2015. In SPVATS, an approximately 4-cm incision was made at the 4th or 5th intercostal space between the anterior and posterior axillary lines. A rib spreader was not used at the incision site, and surgical manipulation was performed very carefully in order to avoid contact between surgical instruments and the intercostal nerves. The same surgeon performed surgery on all patients, and analyzed laboratory data before and after surgery. Results Eighty-four patients underwent anatomical lung resection for postoperative pathological stage I lung cancer. The mean wound length was 4.2 cm. Eighty-four patients underwent lobectomy and segmentectomy, respectively. The mean preoperative forced expiratory volume in 1 second (FEV1%) was 1.85%±0.36%. Our patients consisted of 49 men (58.3%) and 35 women (41.7%), with 64, 18, 1, and 1 having adenocarcinoma, squamous cell carcinoma, adenosquamous carcinoma, and small-cell lung cancer, respectively. The mean operative time was 175±21 min, operative blood loss 92±18 mL, and duration of drain placement 1.9±0.6 days. The duration of the postoperative hospital stay was 7.1±1.7 days, numeric rating scale (NRS) 1 week after surgery 2.8±0.6, and occurrence rate of allodynia 1 month after surgery 10.7%. No patient developed serious

  15. Regenerative water supply for an interplanetary space station: The experience gained on the space stations “Salut”, “Mir”, ISS and development prospects

    NASA Astrophysics Data System (ADS)

    Bobe, Leonid; Samsonov, Nikoly; Gavrilov, Lev; Novikov, Vladimir; Tomashpolskiy, Mihail; Andreychuk, Peter; Protasov, Nikoly; Synjak, Yury; Skuratov, Vladimir

    2007-06-01

    Based on the experience in operation of Russian space stations Salut, Mir and International space station ISS the station's water balance data, parameters and characteristics of the systems for water recovery have been obtained. Using the data design analysis an integrated water supply system for an interplanetary space station has been performed. A packaged physical/chemical system for water supply is composed of an integrated system for water recovery from humidity condensate, green house condensate, water from carbon dioxide reduction system and condensate from urine system; a system for water reclamation from urine; hygiene water processing system and a water storage system. The take off mass of the packaged water supply system (including expendables, redundancy hardware, equivalent mass of power consumption and of thermal control) is appropriate for Mars missions. The international space station is indispensable for verifying innovative processes and new water recovery systems intended for missions to Mars.

  16. Availability of drugs and medical supplies for emergency obstetric care: experience of health facility managers in a rural District of Tanzania

    PubMed Central

    2014-01-01

    Background Provision of quality emergency obstetric care relies upon the presence of skilled health attendants working in an environment where drugs and medical supplies are available when needed and in adequate quantity and of assured quality. This study aimed to describe the experience of rural health facility managers in ensuring the timely availability of drugs and medical supplies for emergency obstetric care (EmOC). Methods In-depth interviews were conducted with a total of 17 health facility managers: 14 from dispensaries and three from health centers. Two members of the Council Health Management Team and one member of the Council Health Service Board were also interviewed. A survey of health facilities was conducted to supplement the data. All the materials were analysed using a qualitative thematic analysis approach. Results Participants reported on the unreliability of obtaining drugs and medical supplies for EmOC; this was supported by the absence of essential items observed during the facility survey. The unreliability of obtaining drugs and medical supplies was reported to result in the provision of untimely and suboptimal EmOC services. An insufficient budget for drugs from central government, lack of accountability within the supply system and a bureaucratic process of accessing the locally mobilized drug fund were reported to contribute to the current situation. Conclusion The unreliability of obtaining drugs and medical supplies compromises the timely provision of quality EmOC. Multiple approaches should be used to address challenges within the health system that prevent access to essential drugs and supplies for maternal health. There should be a special focus on improving the governance of the drug delivery system so that it promotes the accountability of key players, transparency in the handling of information and drug funds, and the participation of key stakeholders in decision making over the allocation of locally collected drug funds. PMID

  17. Robotic-assisted ureteral reimplantation with Boari flap and psoas hitch: a single-institution experience.

    PubMed

    Yang, Christopher; Jones, Loren; Rivera, Marcelino E; Verlee, Graham T; Deane, Leslie A

    2011-11-01

    Robotic-assisted ureteral reimplantations were performed on 3 patients at a single institution, 2 with Boari flap and psoas hitch and 1 with psoas hitch alone. These were for urothelial carcinoma of the distal ureter, ureteral obstruction caused by distal ureteral endometriosis, and ureteral transaction during gynecologic surgery. We used intraoperative ureteroscopy to confirm tumor margins as well as a simple technique for retrograde placement of transvesicle wire prior to ureteral anastomosis. Surgery and recovery were uneventful. This illustrates that robotic-assisted ureteral reimplantation with Boari flap and psoas hitch is a safe and viable approach for ureterovesicle reconstruction. PMID:21859340

  18. "Yes, but...": Rhetoric, Reality and Resistance in Teaching Assistants' Experiences of Inclusive Education

    ERIC Educational Resources Information Center

    Mackenzie, Suzanne

    2011-01-01

    This research examines the role of teaching assistants (TAs) working with children with special educational needs (SEN) in an increasingly complex and diverse context. The role of the TA has been given more attention recently, partly due to the increased focus on their effectiveness within an inclusive education system in a time of workforce…

  19. Experimenting with marker-assisted selection in confection sunflower germplasm enhancement

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This preliminary report describes the application of target region amplification polymorphism (TRAP) markers to marker-assisted selection (MAS) in sunflower. TRAP is a fairly new marker technique that takes the advantage of the existing DNA sequence information to generate polymorphic markers near t...

  20. Enhancing the Experience of Student Teams in Large Classes: Training Teaching Assistants to Be Coaches

    ERIC Educational Resources Information Center

    Sargent, Leisa D.; Allen, Belinda C.; Frahm, Jennifer A.; Morris, Gayle

    2009-01-01

    To address the increasing demand for mass undergraduate management education and, at the same time, a greater emphasis on student teamwork, this study outlines the development, delivery, and evaluation of a training intervention designed to build team-coaching skills in teaching assistants. Specifically, "practice-centered" and "problem-centered"…

  1. Respecting Tutorial Instructors' Beliefs and Experiences: A Case Study of a Physics Teaching Assistant

    ERIC Educational Resources Information Center

    Goertzen, Renee Michelle; Scherr, Rachel E.; Elby, Andrew

    2010-01-01

    Effective physics instruction benefits from respecting the physics ideas that introductory students bring into the classroom. We argue that it is similarly beneficial to respect the teaching ideas that novice physics instructors bring to their classrooms. We present a case study of a tutorial teaching assistant (TA), Alan. When we first examined…

  2. A Successful Transition from Mini- to Microcomputer-Assisted Instruction: The Norfolk Experience.

    ERIC Educational Resources Information Center

    Gull, Randall L.

    1980-01-01

    Reviews reasons for the decision to change from a timeshare minicomputer to microcomputers, financial considerations involved, the purchase of hardware, the problem posed by the lack of compatible software for the microcomputers, and the development of the Assisted Instructional Development System (AIDS) for adapting minicomputer software and…

  3. One Hospital's Successful 20-Year Experience with Physician Assistants in Graduate Medical Education.

    ERIC Educational Resources Information Center

    Russell, John C.; Kaplowe, Joseph; Heinrich, Jeffrey

    1999-01-01

    Describes a New Britain General Hospital (Connecticut) program that uses mid-level practitioners, including physician assistants (PAs), to augment diminished staffs of residents in surgical residencies. Topics discussed include program structure, efforts to reduce the potential for PA/resident conflict, protection of residency program integrity,…

  4. Quantitative Ultrasound-Assisted Extraction for Trace-Metal Determination: An Experiment for Analytical Chemistry

    ERIC Educational Resources Information Center

    Lavilla, Isela; Costas, Marta; Pena-Pereira, Francisco; Gil, Sandra; Bendicho, Carlos

    2011-01-01

    Ultrasound-assisted extraction (UAE) is introduced to upper-level analytical chemistry students as a simple strategy focused on sample preparation for trace-metal determination in biological tissues. Nickel extraction in seafood samples and quantification by electrothermal atomic absorption spectrometry (ETAAS) are carried out by a team of four…

  5. Assisted Suicide, Euthanasia, and Suicide Prevention: The Implications of the Dutch Experience.

    ERIC Educational Resources Information Center

    Hendin, Herbert

    1995-01-01

    A study illustrates how legal sanction promotes a culture that transforms suicide into assisted suicide and encourages choosing death when faced with serious illness. The question of extending legal euthanasia to those not physically ill complicates the issue. Also, doctors may feel they can end a terminally-ill patient's life without consent.…

  6. Chronotopic Thresholds, Reflection, and Transformation of Supervision Experiences for Preschool Assistants in Norwegian Preschools

    ERIC Educational Resources Information Center

    Gradovski, Mikhail; Løkken, Ingrid M.

    2015-01-01

    To maintain team learning for assistants in preschools, dialogue and group discussions are important. These dialogues and discussions can happen both as a part of spontaneous supervision and as a part of an organized process of supervision. Bakhtinian theory of understanding and its notion of dialogue could be used to organize supervision of…

  7. Telidon and Computer Assisted Learning - A Report on the First Experiment Using Telidon for CAL.

    ERIC Educational Resources Information Center

    Trueman, D.

    As part of the TV Ontario Telidon and Education Field Trials, a study was made of the application of the Telidon videotex systems to computer-assisted learning (CAL), including the future directions of these applications and differences in achievement between advanced and general-level students. Subjects were 129 middle- to upper-middle,…

  8. Instructional Experiences of Graduate Assistants Implementing Explicit and Reflective Introductory Biology Laboratories

    ERIC Educational Resources Information Center

    Bautista, Nazan Uludag; Schussler, Elisabeth E.; Rybczynski, Stephen M.

    2014-01-01

    Science education reform documents identify nature of science (NOS) as a critical component of scientific literacy and call for universities, colleges, and K-12 schools to explicitly integrate NOS learning into science curricula. In response to these calls, this study investigated the classroom practices of nine graduate assistants (GAs) who…

  9. Experiences of Resident Assistants with Potentially Suicidal Students: Identification, Referral, and Expectations

    ERIC Educational Resources Information Center

    Bender, Katherine M.

    2013-01-01

    Resident Assistants (RAs), living on campus and tasked with advising students while keeping them safe, are in a position to identify and refer students who may be at risk for suicide or other mental health issues. This study examined RA ability to identify students at risk for suicide, RA comfort in working with students at risk for suicide, RA…

  10. Teaching to Learn: Analyzing the Experiences of First-Time Physics Learning Assistants

    ERIC Educational Resources Information Center

    Gray, Kara Elizabeth

    2013-01-01

    The Colorado Learning Assistant (LA) Model has demonstrated that it is successful in helping to meet multiple goals including enhancing student learning in LA-supported courses, increasing conceptual understanding of physics among LAs, and improving the teaching practices of former LAs in K-12 schools. The research reported here investigated the…

  11. Assisting Beginning Teachers and School Communities to Grow through Extended and Collaborative Mentoring Experiences

    ERIC Educational Resources Information Center

    Long, Janette

    2009-01-01

    Mentoring as a strategy to assist and retain beginning teachers in the profession has been perceived as the panacea for reducing attrition rates. Whilst this may be true in many cases, mentoring alone has been unable to stem the flow of resignations. In this essay on scholarship and teaching, the author explores surrounding mentoring programs. New…

  12. Pond Life That "Know Their Place": Exploring Teaching and Learning Support Assistants' Experiences through Positioning Theory

    ERIC Educational Resources Information Center

    Watson, Debbie; Bayliss, Phil; Pratchett, Glynis

    2013-01-01

    Teaching and learning support assistants (TLSAs) are notoriously underpaid and undervalued as members of school workforces in England and elsewhere in the world, where the discourse of "support" has worked to legitimize their poor status. This article reports and explores empirical findings through the lens of positioning theory. This theoretical…

  13. Assistive Technology as an Evolving Resource for a Successful Employment Experience

    ERIC Educational Resources Information Center

    Murphy, Patricia M.

    2005-01-01

    Strategic pooling of assistive technology, human resources and funding options has made meaningful employment possible for the 25-year-old man with cerebral palsy who is the subject of this paper. Since graduating from high school four years ago, he has held a part-time job at the warehouse of a bookseller. To perform his job, which involves…

  14. Assisting a child with tuberous sclerosis complex (TSC): a qualitative deep analysis of parents’ experience and caring needs

    PubMed Central

    Graffigna, Guendalina; Bosio, Caterina; Cecchini, Isabella

    2013-01-01

    Objective This study was aimed to explore parents’ experience of assisting children affected by tuberous sclerosis complex (TSC) with subependymal giant-cell astrocytoma (SEGA) manifestation, in order to understand their caring needs and expectation of support. Setting and procedure The study was designed according to the qualitative method of interpretative description and implied two sequential phases of data collection. The first phase was based on in-depth interviews with 18 Italian caregivers of children living with TSC. The second phase of the research was based on an online forum with 30 caregivers of children living with TSC. Participants 48 Italian caregivers, assisting patients with TSC with SEGA manifestation have been involved in the study. Results When a TSC diagnosis is made, the whole family is affected psychologically. TSC has a great impact on families’ quality of life and on their ability to cope with the disease and support the child's ability to recover and reach an acceptable level of well-being. Caregivers report the experience of losing control and the feeling of loneliness and abandon from the healthcare system. Conclusion and practice implications Families of children affected by TSC need targeted psychosocial assistance in order to support patients and caregivers and facilitate their social integration. PMID:24319280

  15. How health professionals perceive and experience treating people on social assistance: a qualitative study among dentists in Montreal, Canada

    PubMed Central

    2013-01-01

    Background In Canada, the prevalence of oral diseases is very high among people on social assistance. Despite great need for dental treatment, many are reluctant to consult dental professionals, arguing that dentists do not welcome or value poor patients. The objective of this research was thus to better understand how dentists perceived and experienced treating people on social assistance. Methods This descriptive qualitative research was based on in-depth semi-structured interviews with 33 dentists practicing in Montreal, Canada. Generally organized in dentists’ offices, the interviews lasted 60 to 120 minutes; they were digitally recorded and later transcribed verbatim. The interview transcripts were coded with NVivo software, and data was displayed in analytic matrices. Three members of the research team interpreted the data displayed and wrote the results of this study. Results Dentists express high levels of frustration with people on social assistance as a consequence of negative experiences that fall into 3 categories: 1) Organizational issues (people on social assistance ostensibly make the organization of appointments and scheduling difficult); 2) Biomedical issues (dentists feel unable to provide them with adequate treatment and fail to improve their oral health); 3) Financial issues (they are not lucrative patients). To explain their stance, dentists blame people on social assistance for neglecting themselves, and the health care system for not providing adequate coverage and fees. Despite dentists’ willingness to treat all members of society, an accumulation of frustration leads to feelings of powerlessness and discouragement. Conclusions The current situation is unacceptable; we urge public health planners and governmental health agencies to ally themselves with the dental profession in order to implement concrete solutions. PMID:24192504

  16. Supply Management.

    ERIC Educational Resources Information Center

    Marine Corps Inst., Washington, DC.

    Developed as part of the Marine Corps Institute (MCI) correspondence training program, this course on supply management is designed to provide the supply chief with an understanding of the fundamental functions of supply management as it applies to a supply office. Introductory materials include specific information for MCI students, a course…

  17. Experiences in the Application of Project-Based Learning in a Switching-Mode Power Supplies Course

    ERIC Educational Resources Information Center

    Lamar, D. G.; Miaja, P. F.; Arias, M.; Rodriguez, A.; Rodriguez, M.; Vazquez, A.; Hernando, M. M.; Sebastian, J.

    2012-01-01

    This paper presents the introduction of problem-based learning (PBL) in a power electronics course at the University of Oviedo, Gijon, Spain, by means of two practical projects: the design and construction of a switching-mode power supply (SMPS) prototype and the static study of a dc-dc converter topology. The goal of this innovation was for…

  18. Anatomic pulmonary resection by video-assisted thoracoscopy: the Brazilian experience (VATS Brazil study)

    PubMed Central

    Terra, Ricardo Mingarini; Kazantzis, Thamara; Pinto-Filho, Darcy Ribeiro; Camargo, Spencer Marcantonio; Martins-Neto, Francisco; Guimarães, Anderson Nassar; Araújo, Carlos Alberto; Losso, Luis Carlos; Ghefter, Mario Claudio; de Lima, Nuno Ferreira; Gomes-Neto, Antero; Brito-Filho, Flávio; Haddad, Rui; Saueressig, Maurício Guidi; Lima, Alexandre Marcelo Rodrigues; de Siqueira, Rafael Pontes; Pinho, Astunaldo Júnior de Macedo e; Vannucci, Fernando

    2016-01-01

    ABSTRACT Objective: The objective of this study was to describe the results of anatomic pulmonary resections performed by video-assisted thoracoscopy in Brazil. Methods: Thoracic surgeons (members of the Brazilian Society of Thoracic Surgery) were invited, via e-mail, to participate in the study. Eighteen surgeons participated in the project by providing us with retrospective databases containing information related to anatomic pulmonary resections performed by video-assisted thoracoscopy. Demographic, surgical, and postoperative data were collected with a standardized instrument, after which they were compiled and analyzed. Results: The surgeons provided data related to a collective total of 786 patients (mean number of resections per surgeon, 43.6). However, 137 patients were excluded because some data were missing. Therefore, the study sample comprised 649 patients. The mean age of the patients was 61.7 years. Of the 649 patients, 295 (45.5%) were male. The majority-521 (89.8%)-had undergone surgery for neoplasia, which was most often classified as stage IA. The median duration of pleural drainage was 3 days, and the median hospital stay was 4 days. Of the 649 procedures evaluated, 598 (91.2%) were lobectomies. Conversion to thoracotomy was necessary in 30 cases (4.6%). Postoperative complications occurred in 124 patients (19.1%), the most common complications being pneumonia, prolonged air leaks, and atelectasis. The 30-day mortality rate was 2.0%, advanced age and diabetes being found to be predictors of mortality. Conclusions: Our analysis of this representative sample of patients undergoing pulmonary resection by video-assisted thoracoscopy in Brazil showed that the procedure is practicable and safe, as well as being comparable to those performed in other countries. PMID:27383936

  19. Robot-Assisted Middle Pancreatectomy for Elderly Patients: Our Initial Experience

    PubMed Central

    Zhang, Tian; Wang, Xinjing; Huo, Zhen; Wen, Chenlei; Wu, Zhichong; Zhan, Qian; Jin, Jiabin; Cheng, Dongfeng; Chen, Hao; Deng, Xiaxing; Shen, Baiyong; Peng, Chenghong

    2015-01-01

    Background The aim of this study was to evaluate the indications, safety, feasibility, and short- and long-term outcomes for elderly patients who underwent robot-assisted middle pancreatectomies (MPs). Material/Methods Ten patients (≥60 years) underwent robot-assisted middle pancreatectomies from 2012 to 2015. The perioperative data, including tumor size, operating time, rate of postoperative pancreatic fistula (POPF), postoperative morbidity, and other parameters, were analyzed. We collected and analyzed the follow-up information. Results The mean age of patients was 64.30 years (range, 60–73 years). The average tumor size was 2.61 cm. The 10 cases were all benign or low-grade malignant lesions. The mean operating time was 175.00 min. The mean blood loss was 113.00 ml with no blood transfusion needed. Postoperative fistulas developed in 5 patients; there were 2 Grade A fistulas and 3 grade B fistulas. There were 3 patients who underwent postoperative complications, including 2 Grade 1 or 2 complications and 1 Grade 3 complication. No reoperation and postoperative mortality occurred. The mean hospital stay was 19.91 days. After a median follow-up of 23 months, new onset of diabetes mellitus developed in 1 patient and none suffered from deterioration of previously diagnosed diabetes or exocrine insufficiency, and no tumor recurrence happened. Conclusions Robot-assisted middle pancreatectomy was safe and feasible for elderly people. It had low risk of exocrine or endocrine dysfunction and benefited patients’ long-term outcomes. Incidence of POPF was relatively high but we could prevent it from resulting in bad outcomes by scientific perioperative care and systemic treatment. PMID:26395335

  20. NURSING HOME PRACTICES FOLLOWING RESIDENT DEATH: THE EXPERIENCE OF CERTIFIED NURSING ASSISTANTS

    PubMed Central

    Barooah, Adrita; Boerner, Kathrin; van Riesenbeck, Isabelle; Burack, Orah R.

    2015-01-01

    This study examined certified nursing assistants’ (CNAs) experiences of nursing home practices following resident death. Participants were 140 CNAs who had experienced recent resident death. In semi-structured, in-person interviews, CNAs were asked about their experiences with the removal of the resident's body, filling the bed with a new resident, and how they were notified about the death. The facilities’ practice of filling the bed quickly was most often experienced as negative. Responses to body removal and staff notification varied, but negative experiences were reported by a substantial minority. Being notified prior to returning to work was associated with a more positive experience. Learning about the death by walking into a room to find the bed empty or already filled was the most negative experience. Study findings suggest that more mindful approaches to the transitions related to resident deaths would be valued by CNAs and could improve their work experience. PMID:25554351

  1. Positioning of the anaesthetised patient during robotically assisted laparoscopic surgery: perioperative staff experiences.

    PubMed

    Mangham, M

    2016-03-01

    Safe, patient centred care is a large part of our trust values at the Royal Wolverhampton NHS Trust. Robotic assisted laparoscopic surgery (RALS) is still in its infancy within our trust, and we decided to look at what we have learned so far regarding patient positioning during robotic surgery for gynae-oncology and uro-gynae procedures. We also considered what we believe needs to be achieved in order to deliver high standards of care in positioning patients during robotic surgery, not only now, but also for the future of robotic surgery. PMID:27149834

  2. Robot-assisted laparoscopic total extraperitoneal hernia repair during prostatectomy: technique and initial experience

    PubMed Central

    Qazi, Hasan A.R.; Do, Minh; Rewhorn, Matthew; Häfner, Tim; Liatsikos, Evangelos; Kallidonis, Panagiotis; Dietel, Anja; Stolzenburg, Jens Uwe

    2015-01-01

    Introduction To describe the technique of total extraperitoneal inguinal hernia repair performed during Robot-assisted Endoscopic Extraperitoneal Radical Prostatectomy (R-EERPE) and to present the initial outcomes. Material and methods 12 patients underwent inguinal hernia repair during 120 R-EERPEs performed between July 2011 and March 2012. All patients had a clinically palpable inguinal hernia preoperatively. The hernia was repaired using a Total Extraperitoneal Patch (TEP) at the end of the procedure. Results Sac dissection and mesh placement was simpler compared to conventional laparoscopy due to improved, magnified, 3-D vision along with 7° of movement, and better control of mesh placement. The median operating time was 185 minutes, with on average, an additional 12 minutes incurred per hernia repair. The median blood loss for the procedures was 250 ml, and the mean pathological prostate weight was 55 gm. No additional blood loss was noted and there were no postoperative complications. None of the patients had a recurrence at 12 months. We await long-term follow-up data. Conclusions Robot-assisted TEP is feasible and should be considered in patients with hernia at the time of R-EERPE. PMID:26251753

  3. Respecting tutorial instructors' beliefs and experiences: A case study of a physics teaching assistant

    NASA Astrophysics Data System (ADS)

    Goertzen, Renee Michelle; Scherr, Rachel E.; Elby, Andrew

    2010-07-01

    Effective physics instruction benefits from respecting the physics ideas that introductory students bring into the classroom. We argue that it is similarly beneficial to respect the teaching ideas that novice physics instructors bring to their classrooms. We present a case study of a tutorial teaching assistant (TA), Alan. When we first examined Alan’s teaching, we focused our attention on the mismatch between his actions and those advocated by the TA instructors. Further study showed us that Alan cared about helping his students and that his teaching was well integrated with his beliefs about how students learn physics and how teachers can best assist students. Learning about Alan’s beliefs and motivations changed our thinking about what might constitute effective professional development for Alan and other TAs. We advocate a new perspective on TA professional development: one in which TAs are seen as partners in the endeavor of educating students and one that seeks to find and build upon productive elements in their beliefs.

  4. Production, partitioning and stoichiometry of organic matter under variable nutrient supply during mesocosm experiments in the tropical Pacific and Atlantic Ocean

    NASA Astrophysics Data System (ADS)

    Franz, J. M. S.; Hauss, H.; Sommer, U.; Dittmar, T.; Riebesell, U.

    2012-11-01

    Oxygen-deficient waters in the ocean, generally referred to as oxygen minimum zones (OMZ), are expected to expand as a consequence of global climate change. Poor oxygenation is promoting microbial loss of inorganic nitrogen (N) and increasing release of sediment-bound phosphate (P) into the water column. These intermediate water masses, nutrient-loaded but with an N deficit relative to the canonical N:P Redfield ratio of 16:1, are transported via coastal upwelling into the euphotic zone. To test the impact of nutrient supply and nutrient stoichiometry on production, partitioning and elemental composition of dissolved (DOC, DON, DOP) and particulate (POC, PON, POP) organic matter, three nutrient enrichment experiments were conducted with natural microbial communities in shipboard mesocosms, during research cruises in the tropical waters of the southeast Pacific and the northeast Atlantic. Maximum accumulation of POC and PON was observed under high N supply conditions, indicating that primary production was controlled by N availability. The stoichiometry of microbial biomass was unaffected by nutrient N:P supply during exponential growth under nutrient saturation, while it was highly variable under conditions of nutrient limitation and closely correlated to the N:P supply ratio, although PON:POP of accumulated biomass generally exceeded the supply ratio. Microbial N:P composition was constrained by a general lower limit of 5:1. Channelling of assimilated P into DOP appears to be the mechanism responsible for the consistent offset of cellular stoichiometry relative to inorganic nutrient supply and nutrient drawdown, as DOP build-up was observed to intensify under decreasing N:P supply. Low nutrient N:P conditions in coastal upwelling areas overlying O2-deficient waters seem to represent a net source for DOP, which may stimulate growth of diazotrophic phytoplankton. These results demonstrate that microbial nutrient assimilation and partitioning of organic matter

  5. Production, partitioning and stoichiometry of organic matter under variable nutrient supply during mesocosm experiments in the tropical Pacific and Atlantic Ocean

    NASA Astrophysics Data System (ADS)

    Franz, J. M. S.; Hauss, H.; Sommer, U.; Dittmar, T.; Riebesell, U.

    2012-05-01

    Oxygen-deficient waters in the ocean, generally referred to as oxygen minimum zones (OMZ), are expected to expand as a consequence of global climate change. Poor oxygenation is promoting microbial loss of inorganic nitrogen (N) and increasing release of sediment-bound phosphate (P) into the water column. These intermediate water masses, nutrient-loaded but with an N deficit relative to the canonical N:P Redfield ratio of 16:1, are transported via coastal upwelling into the euphotic zone. To test the impact of nutrient supply and nutrient stoichiometry on production, partitioning and elemental composition of phytoplankton-derived dissolved (DOC, DON, DOP) and particulate (POC, PON, POP) organic matter, three nutrient enrichment experiments were conducted with natural phytoplankton communities in shipboard mesocosms, during research cruises in the tropical waters of the South East Pacific and the North East Atlantic. Maximum accumulation of POC and PON was observed under high N supply conditions, indicating that primary production was controlled by N availability. The stoichiometry of photoautotrophic biomass was unaffected by nutrient N:P supply during exponential growth under nutrient saturation, while it was highly variable under conditions of nutrient limitation and closely correlated to the N:P supply ratio, although PON:POP of accumulated phytoplankton generally exceeded the supply ratio. Phytoplankton N:P composition was constrained by a general lower limit of 5:1. Channelling of assimilated P into DOP appears to be the mechanism responsible for the consistent offset of cellular stoichiometry relative to inorganic nutrient supply and nutrient drawdown, as DOP build-up was observed to intensify under decreasing N:P supply. Low nutrient N:P conditions in coastal upwelling areas overlying O2-deficient waters seem to represent a net source for DOP, which may stimulate growth of diazotrophic phytoplankton. These results demonstrate that microalgal nutrient

  6. Experiments and modeling on FTU tokamak for EC assisted plasma start-up studies in ITER-like configuration

    NASA Astrophysics Data System (ADS)

    Granucci, G.; Garavaglia, S.; Ricci, D.; Artaserse, G.; Belli, F.; Bin, W.; Calabrò, G.; Cavinato, M.; Farina, D.; Figini, L.; Moro, A.; Ramogida, G.; Sozzi, C.; Tudisco, O.; FTU Team

    2015-09-01

    The intrinsic limited toroidal electric field (0.3 V m-1) in devices with superconducting poloidal coils (ITER, JT-60SA) requires additional heating, like electron cyclotron (EC) waves, to initiate plasma and to sustain it during the burn-through phase. The FTU tokamak has contributed to studying the perspective of EC assisted plasma breakdown. Afterward, a new experimental and modeling activity addressing the study of assisted plasma start-up in a configuration close to the ITER one (magnetic field, oblique injection, and polarization) has been performed and is presented here. These experiments have been supported by a 0D code, BKD0, developed to model the plasma start-up and linked to a beam tracing code computing, in a consistent way, EC absorption. The FTU results demonstrate the role of polarization conversion at the inner wall reflection. Dedicated experiments also showed the capability of EC power to sustain plasma start-up in the presence of strong error field (12 mT), with a null outside the vacuum vessel. The BKD0 code, applied to FTU data, has been used to determine the operational window of sustained breakdown as a function of toroidal electric field and neutral pressure. Experimental results in agreement with the BKD0 simulations support the use of the code to predict start-up in future tokamaks, like ITER and JT60SA.

  7. Simulation and experiment of cutting force in ultrasonic torsional vibration assisted micro-milling

    NASA Astrophysics Data System (ADS)

    Hu, Haijun; Sun, Yazhou; Lu, Zesheng

    2010-10-01

    A coupled thermo-mechanical model of Ultrasonic Torsional Vibration Assisted Micro-milling (UTVAM) was established with ABAQUS, the primary cause which leads to a decrease in cutting force after adding Ultrasonic Torsional Vibration (UTV) to micro-milling was analyzed. Micro-milling with and without UTV were both carried out on the self-designed UTVAM experimental system, using forged aluminum alloy. Single-factor method was used to analyze the influence rules of cutting parameters such as spindle speed, feed per tooth and depth of cut on cutting force. It was found that feed per tooth plays a more important role than other parameters, a smaller feed per tooth can have a better effects on reducing of cutting force in UTVAM.

  8. Operation of magnetically assisted fluidized beds in microgravity and variable gravity: experiment and theory

    NASA Astrophysics Data System (ADS)

    Sornchamni, T.; Jovanovic, G. N.; Reed, B. P.; Atwater, J. E.; Akse, J. R.; Wheeler, R. R.

    2004-01-01

    The conversion of solid waste into useful resources in support of long duration manned missions in space presents serious technological challenges. Several technologies, including supercritical water oxidation, microwave powered combustion and fluidized bed incineration, have been tested for the conversion of solid waste. However, none of these technologies are compatible with microgravity or hypogravity operating conditions. In this paper, we present the gradient magnetically assisted fluidized bed (G-MAFB) as a promising operating platform for fluidized bed operations in the space environment. Our experimental and theoretical work has resulted in both the development of a theoretical model based on fundamental principles for the design of the G-MAFB, and also the practical implementation of the G-MAFB in the filtration and destruction of solid biomass waste particles from liquid streams.

  9. Operation of magnetically assisted fluidized beds in microgravity and variable gravity: experiment and theory

    NASA Technical Reports Server (NTRS)

    Sornchamni, T.; Jovanovic, G. N.; Reed, B. P.; Atwater, J. E.; Akse, J. R.; Wheeler, R. R.

    2004-01-01

    The conversion of solid waste into useful resources in support of long duration manned missions in space presents serious technological challenges. Several technologies, including supercritical water oxidation, microwave powered combustion and fluidized bed incineration, have been tested for the conversion of solid waste. However, none of these technologies are compatible with microgravity or hypogravity operating conditions. In this paper, we present the gradient magnetically assisted fluidized bed (G-MAFB) as a promising operating platform for fluidized bed operations in the space environment. Our experimental and theoretical work has resulted in both the development of a theoretical model based on fundamental principles for the design of the G-MAFB, and also the practical implementation of the G-MAFB in the filtration and destruction of solid biomass waste particles from liquid streams. c2004 COSPAR. Published by Elsevier Ltd. All rights reserved.

  10. Fiber optic bronchoscopy-assisted percutaneous tracheostomy: a decade of experience at a university hospital

    PubMed Central

    Romero, Carlos M.; Cornejo, Rodrigo; Tobar, Eduardo; Gálvez, Ricardo; Luengo, Cecilia; Estuardo, Nivia; Neira, Rodolfo; Navarro, José Luis; Abarca, Osvaldo; Ruiz, Mauricio; Berasaín, María Angélica; Neira, Wilson; Arellano, Daniel; Llanos, Osvaldo

    2015-01-01

    Objective To evaluate the efficacy and safety of percutaneous tracheostomy by means of single-step dilation with fiber optic bronchoscopy assistance in critical care patients under mechanical ventilation. Methods Between the years 2004 and 2014, 512 patients with indication of tracheostomy according to clinical criteria, were prospectively and consecutively included in our study. One-third of them were high-risk patients. Demographic variables, APACHE II score, and days on mechanical ventilation prior to percutaneous tracheostomy were recorded. The efficacy of the procedure was evaluated according to an execution success rate and based on the necessity of switching to an open surgical technique. Safety was evaluated according to post-operative and operative complication rates. Results The mean age of the group was 64 ± 18 years (203 women and 309 males). The mean APACHE II score was 21 ± 3. Patients remained an average of 11 ± 3 days on mechanical ventilation before percutaneous tracheostomy was performed. All procedures were successfully completed without the need to switch to an open surgical technique. Eighteen patients (3.5%) presented procedure complications. Five patients experienced transient desaturation, 4 presented low blood pressure related to sedation, and 9 presented minor bleeding, but none required a transfusion. No serious complications or deaths associated with the procedure were recorded. Eleven patients (2.1%) presented post-operative complications. Seven presented minor and transitory bleeding of the percutaneous tracheostomy stoma, 2 suffered displacement of the tracheostomy cannula, and 2 developed a superficial infection of the stoma. Conclusion Percutaneous tracheostomy using the single-step dilation technique with fiber optic bronchoscopy assistance seems to be effective and safe in critically ill patients under mechanical ventilation when performed by experienced intensive care specialists using a standardized procedure. PMID:26340151

  11. Necessity and benefits of physician assistants' participation in international clinical experiences.

    PubMed

    Kibe, Lucy Wachera

    2012-01-01

    Several consultation stations have been set up in an unfinished stone building. My team is made up of a Kenyan physician assistant (called clinical officer), a Kenyan medical student, and me, a US physician assistant student. We are huddled around a small worn-out square table. A middle-aged woman and her two children, ages 2 and 6, approach the table. They have traveled 2 miles to the medical camp. The children, covered in dust, are emaciated with protruding abdomens, dry skin, and congested noses. The clinical officer (CO) conducts a brief interview in Swahili, the Kenyan national language. The mother explains that they have been coughing up thick yellow sputum for a week and have no appetite. They've also had diarrhea for a couple of weeks. I examine the children, who are obviously scared. Hot, moist skin. They are both running a fever. I listen to the lungs: reduced lung sounds. The protruding abdomens are rock hard. I report the findings to the team. The CO turns to the Kenyan medical student and me and quizzes us on differential diagnoses with rationale for each. We come up with malaria, pneumonia, TB, and worm infestation. Due to limited resources, medical diagnosis in Kenya relies heavily on history and physical exam. The CO explains that comorbid conditions are probable. Luckily, we have malaria-testing kits at the camp. They test negative for malaria. We decide to treat them for pneumonia. We also offer them a free hot meal, toothbrushes, T-shirts, coloring paper, and crayons. The children manage to smile. The mother is so grateful, she cries. PMID:23437625

  12. PI-in-a-box: Intelligent onboard assistance for spaceborne experiments in vestibular physiology

    NASA Technical Reports Server (NTRS)

    Colombano, Silvano; Young, Laurence; Wogrin, Nancy; Rosenthal, Don

    1988-01-01

    In construction is a knowledge-based system that will aid astronauts in the performance of vestibular experiments in two ways: it will provide real-time monitoring and control of signals and it will optimize the quality of the data obtained, by helping the mission specialists and payload specialists make decisions that are normally the province of a principal investigator, hence the name PI-in-a-box. An important and desirable side-effect of this tool will be to make the astronauts more productive and better integrated members of the scientific team. The vestibular experiments are planned by Prof. Larry Young of MIT, whose team has already performed similar experiments in Spacelab missions SL-1 and D-1, and has experiments planned for SLS-1 and SLS-2. The knowledge-based system development work, performed in collaboration with MIT, Stanford University, and the NASA-Ames Research Center, addresses six major related functions: (1) signal quality monitoring; (2) fault diagnosis; (3) signal analysis; (4) interesting-case detection; (5) experiment replanning; and (6) integration of all of these functions within a real-time data acquisition environment. Initial prototyping work has been done in functions (1) through (4).

  13. Cross-border-assisted reproduction: a qualitative account of UK travellers' experiences.

    PubMed

    Hudson, Nicky; Culley, Lorraine; Blyth, Eric; Norton, Wendy; Pacey, Allan; Rapport, Frances

    2016-06-01

    Surveys on patients' experiences of cross-border fertility treatment have reported a range of positive and challenging features. However, the number of such studies is limited, and there is no detailed qualitative account of the experiences of UK patients who travel overseas for fertility treatment. The present study used a cross-sectional, qualitative design and in-depth interviews. Fifty-one participants (41 women and 10 men, representing 41 treatment 'cases') participated in semi-structured interviews. The experiences reported were broadly positive with a large proportion of participants (39 cases, 95%) citing a favourable overall experience with only two cases (5%) reporting a more negative experience. Thematic analysis revealed 6 major categories and 20 sub-categories, which described the positive and challenging aspects of cross-border fertility travel. The positive aspects were represented by the categories: 'access', 'control' and 'care and respect'. The more challenging aspects were categorized as 'logistics and coordination of care', 'uncertainty' and 'cultural dissonance'. The study confirms findings from others that despite some challenges, there is a relatively high level of patient satisfaction with cross-border treatment with participants able to extend the boundaries of their fertility-seeking trajectories and in some cases, regain a sense of control over their treatment. PMID:27144511

  14. Assessment of medical imaging and computer-assist systems: lessons from recent experience.

    PubMed

    Wagner, Robert F; Beiden, Sergey V; Campbell, Gregory; Metz, Charles E; Sacks, William M

    2002-11-01

    In the last 2 decades major advances have been made in the field of assessment methods for medical imaging and computer-assist systems through the use of the paradigm of the receiver operating characteristic (ROC) curve. In the most recent decade this methodology was extended to embrace the complication of reader variability through advances in the multiple-reader, multiple-case (MRMC) ROC measurement and analysis paradigm. Although this approach has been widely adopted by the imaging research community, some investigators appear averse to it, possibly from concern that it could place a greater burden on the scarce resources of patient cases and readers compared to the requirements of alternative methods. The present communication argues, however, that the MRMC ROC approach to assessment in the context of reader variability may be the most resource-efficient approach available. Moreover, alternative approaches may also be statistically uninterpretable with regard to estimated summary measures of performance and their uncertainties. The authors propose that the MRMC ROC approach be considered even more widely by the larger community with responsibilities for the introduction and dissemination of medical imaging technologies to society. General principles of study design are reviewed, and important contemporary clinical trials are used as examples. PMID:12449359

  15. Video assisted thoracoscopic excision of mediastinal ectopic parathyroid adenomas: a UK regional experience

    PubMed Central

    Khan, Ali Zamir; Rew, David; Lagattolla, Nicholas; Singh, Neeta

    2015-01-01

    Background To report the first series of video-assisted thoracoscopic surgery (VATS) resection of mediastinal ectopic parathyroid adenomas (MEPAs) in the UK. Methods A case series of seven cases undergoing VATS between 2004 and 2009 to treat single gland hyperparathyroidism. Methylene blue (MB) was used in 5/7 cases immediately before exploration to identify the adenomas. Carbon dioxide (CO2) up to pressures of 10 mmHg was used safely to deflate the lung in two cases. Results There were five women and two men with a mean age of 53 years (range, 27-72 years). Histopathology confirmed successful resection of the parathyroid adenoma in 6/7 cases. There was one conversion to open thoracotomy due to bleeding from the azygos vein resulting from excessive traction. Despite marked MB uptake, this patient proved to have tuberculoid adenopathy and no parathyroid tissue was identified. Postoperative plasma calcium returned to normal in 6/7 patients and parathyroid hormone (PTH) level in 6/7 patients. The median hospital stay was 2 days and there was no mortality in this series. Conclusions MEPAs can be safely resected using VATS with minimal surgical morbidity, short drainage time and short hospital stay. CO2 insufflation and the intraoperative use of MB are safe and help to accurately localise the ectopic adenoma. VATS should be considered as the first-line approach for resection of MEPAs. PMID:26693148

  16. Early Experience in Da Vinci Robot-Assisted Partial Nephrectomy: An Australian Single Centre Series

    PubMed Central

    Ting, Francis; Savdie, Richard; Chopra, Sam; Yuen, Carlo; Brenner, Phillip

    2015-01-01

    Introduction and Objectives. To demonstrate the safety and efficacy of the robot-assisted partial nephrectomy (RAPN) technique in an Australian setting. Methods. Between November 2010 and July 2014, a total of 76 patients underwent 77 RAPN procedures using the Da Vinci Surgical System© at our institution. 58 of these procedures were performed primarily by the senior author (PB) and are described in this case series. Results. Median operative time was 4 hours (range 1.5–6) and median warm ischaemic time (WIT) was 8 minutes (range 0–30) including 11 cases with zero ischaemic time. All surgical margins were clear with the exception of one patient who had egress of intravascular microscopic tumour outside the capsule to the point of the resection margin. Complications were identified in 9 patients (15.8%). Major complications included conversion to open surgery due to significant venous bleeding (n = 1), reperfusion injury (n = 1), gluteal compartment syndrome (n = 1), DVT/PE (n = 1), and readmission for haematuria (n = 1). Conclusion. This series demonstrates the safety and efficacy of the RAPN technique in an Australian setting when performed by experienced laparoscopic surgeons in a dedicated high volume robotic centre. PMID:26167299

  17. Robot-Assisted Myomectomy for Large Uterine Myomas: A Single Center Experience

    PubMed Central

    Gunnala, Vinay; Setton, Robert; Pereira, Nigel; Huang, Jian Qun

    2016-01-01

    Objective. To determine if robot-assisted myomectomy (RAM) is feasible for women with large uterine myomas. Methods. Retrospective review of one gynecologic surgeon's RAM cases between May 2010 and July 2013. Large uterine myomas, defined as the largest myoma ≥9 cm by preoperative magnetic resonance imaging, was age- and time-matched to controls with the largest myoma <9 cm. Primary surgical outcomes compared were operative time and estimated blood loss (EBL). Results. 207 patients were included: 66 (32%) patients were in the ≥9 cm group, while 141 (68%) patients were in the <9 cm group. There was a statistically significant increase in the operative time (130 min versus 92 min) and EBL (100 mL versus 25 mL) for the ≥9 cm group compared to the <9 cm group. Ten (4.8%) patients had the largest myoma measuring ≥15 cm, and 11 (5.3%) patients had a specimen weight >900 gm, of which no major adverse outcomes were observed. All patients in the study cohort were discharged on the same day after surgery. Conclusion. RAM is a feasible surgical approach for patients with myomas ≥9 cm. Patients with large myomas undergoing RAM are also candidates for same-day discharge after surgery. PMID:27034828

  18. [Pulmonary resection using video-assisted thoracoscopic surgery--20 years experience].

    PubMed

    Baste, J-M; Orsini, B; Rinieri, P; Melki, J; Peillon, C

    2014-04-01

    Major lung resection using minimally invasive techniques - video-assisted thoracoscopic surgery (VATS) - was first described 20 years ago. However, its development has been slow in many countries because the value of this approach has been questioned. Different techniques and definitions of VATS are used and this can be confusing for physicians and surgeons. The benefit of minimally invasive thoracic surgery was not always apparent, while many surgeons pointed to suboptimal operative outcomes. Recently, technological advances (radiology, full HD monitor and new stapler devices) have improved VATS outcomes. The objectives of this review are to emphasize the accepted definition of VATS resection, outline the different techniques developed and their results including morbidity and mortality compared to conventional approaches. Minimally invasive thoracic surgery has not been proven to give superior survival (level one evidence) compared to thoracotomy. A slight advantage has been demonstrated for short-term outcomes. VATS is not a surgical revolution but rather an evolution of surgery. It should be considered together with the new medical environment including stereotactic radiotherapy and radiofrequency. VATS seems to be more accurate in the treatment of small lung lesions diagnosed with screening CT scan. In the academic field, VATS allows easier teaching and diffusion of techniques. PMID:24750952

  19. Impact of continuous and intermittent supply of electric assistance on high-strength 2,4-dichlorophenol (2,4-DCP) degradation in electro-microbial system.

    PubMed

    Cao, Zhanping; Zhang, Minghui; Zhang, Jingli; Zhang, Hongwei

    2016-07-01

    The high-strength 2,4-DCP, which exists in two states: dissolved and colloidal, was studied by a continuously electro-microbial system (CEMS) and an intermittently electro-microbial system (IEMS). The hydrolysis rate of colloidal 2,4-DCP in the IEMS without electric assistance was much higher than that in the CEMS. However, the degradation rate of the dissolved 2,4-DCP and the dissolved intermediates (2-chlorophenol and 4-chlorophenol) in the IEMS without electric assistance were much lower than that in the CEMS. By adjusting the intermittent operation mode, the degradation time of 2,4-DCP was shortened greatly. Microbial characteristics in the CEMS and the IEMS were different. The correlation analysis for the main factors affecting the hydrolysis was performed by SPSS, and it was found that the correlation coefficient (rp) was -0.912 for extracellular polymeric substances (EPS) content, 0.823 for zeta potential and 0.632 for relative hydrophobicity, respectively. PMID:27092992

  20. First Year Experience: How We Can Better Assist First-Year International Students in Higher Education

    ERIC Educational Resources Information Center

    Yan, Zi; Sendall, Patricia

    2016-01-01

    While many American colleges and universities are providing a First Year Experience (FYE) course or program for their first year students, those programs are not often customized to take into account international students' (IS) unique challenges. Using quantitative and qualitative methods, this study evaluated a FYE course that was customized for…

  1. An Analysis of Teaching Competencies of Junior Faculty with Different Levels of Graduate Teaching Assistant Experiences

    ERIC Educational Resources Information Center

    Thoron, Andrew C.; Myers, Brian E.; Harder, Amy; Stedman, Nicole; Roberts, T. Grady

    2012-01-01

    This casual-comparative study was conducted to determine the professional development needs of teaching faculty with fewer than 6 years of university teaching experience (n = 67). Faculty were compared on the level of teaching assistantship responsibility during their graduate degree program. The purpose of this article is to provide faculty…

  2. Survival on the Streets: Experiences of the Homeless Population and Constructive Suggestions for Assistance

    ERIC Educational Resources Information Center

    McBride, Rebecca G.

    2012-01-01

    This phenomenological study explored the experiences and needs of 11 individuals of the homeless population. Results revealed 5 themes: need for employment, perceptions of needs, perceptions of programs and shelters, coping mechanisms, and perceptions of treatment. Counseling implications for practice are discussed.

  3. Children's experiences of food insecurity can assist in understanding its effect on their well-being

    Technology Transfer Automated Retrieval System (TEKTRAN)

    An understanding of the experience of food insecurity by children is essential for better measurement and assessment of its effect on children's nutritional, physical, and mental health. Our qualitative study explored children's perceptions of household food insecurity to identify these perceptions ...

  4. Microwave-Assisted Esterification: A Discovery-Based Microscale Laboratory Experiment

    ERIC Educational Resources Information Center

    Reilly, Maureen K.; King, Ryan P.; Wagner, Alexander J.; King, Susan M.

    2014-01-01

    An undergraduate organic chemistry laboratory experiment has been developed that features a discovery-based microscale Fischer esterification utilizing a microwave reactor. Students individually synthesize a unique ester from known sets of alcohols and carboxylic acids. Each student identifies the best reaction conditions given their particular…

  5. 10 CFR 600.233 - Supplies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Supplies. 600.233 Section 600.233 Energy DEPARTMENT OF ENERGY (CONTINUED) ASSISTANCE REGULATIONS FINANCIAL ASSISTANCE RULES Uniform Administrative Requirements... supplies exceeding $5,000 in total aggregate fair market value upon termination or completion of the...

  6. Uniportal video-assisted thoracic surgery lobectomy in semiprone position: primary experience of 105 cases

    PubMed Central

    Lin, Zongwu; Xi, Junjie; Jiang, Wei; Wang, Lin; Wang, Qun

    2015-01-01

    Background Uniportal video-assisted thoracic surgery (VATS) is becoming popular, and uniportal lobectomy in semiprone position was reported in 2014. This study aimed to investigate the feasibility and safety of uniportal VATS in semiprone position. Methods From May 28, 2014 to October 19, 2015, we attempted uniportal VATS lobectomy in semiprone position in 105 cases. Forty-five patients were male, and 60 patients were female. Average age was 57.1±10.6 years (24–76 years). Perioperative parameters were documented. Results There were two conversions to three-port lobectomy, one conversion to double-port lobectomy, and three conversions to thoracotomy. Among the patients who received uniportal VATS in semiprone position, mean operation duration was 137.4±47.8 minutes. Mean estimated blood loss was 60.7±102.7 mL. Mean time of drainage was 3.0±2.1 days, and postoperative length of stay averaged 4.9±2.3 days. In the cases of primary lung cancer, the mean number of nodal stations explored was 7.2±1.3, with a mean of 20.8±6.3 lymph nodes resected. As to the mediastinal lymph node specifically, a mean of 4.4±1.0 nodal stations were explored, and the number of resected mediastinal lymph nodes averaged 12.8±5.1. No perioperative death or major complication occurred. Conclusions Uniportal VATS lobectomy in semiprone position is feasible and safe. PMID:26793366

  7. Balloon-assisted maturation for arteriovenous fistula maturation failure: an early period experience

    PubMed Central

    Park, Sun Cheol; Ko, Seung Yeon; Kim, Ji Il; Moon, In Sung

    2016-01-01

    Purpose Balloon-assisted maturation (BAM) is emerging as a salvage management for arteriovenous fistula maturation failure (AVF MF). However, BAM is a relatively new, yet controversial technique for AVF maturation. Therefore, we evaluated the effectiveness of BAM for AVF MF. Methods Between January 2012 and December 2014, 249 AVFs were created. The total MF rate was 24.8%. But, only 110 AVFs were enrolled, including 74 brachiocephalic (BC) AVFs and 36 radiocephalic (RC) AVFs. The follow-up period was 12 months. Among those, there were 42 MFs (22 BC AVFs and 20 RC AVFs) and 68 maturation successes (MS) (52 BC AVFs and 16 RC AVFs). BAM was involved in MF group. We compared the clinical characteristics, AVF flows, and AVF flow ratios of MF and MS groups. Also, we evaluated the etiology, management, and result of MF. Results There was no difference in clinical characteristics between MF and MS groups. In MF group, 39 balloon angioplasties (BAs) for 42 AVF MFs were performed. Number of BA was 1.45 ± 0.57 and duration of BA was 21.30 ± 21.24 weeks. BAM rate was 46.2%. For 1 year after AVF creation, AVF flows of MS group were significantly larger than those of MF group (P < 0.05) but there was no difference in AVF flow ratio between MF and MS groups (P > 0.05). Conclusion BA for AVF MF is a relatively applicable and effective modality. Although a large volume study is necessary, we suggest BAM is an effective salvage management for AVF MF. PMID:27186572

  8. Initial Experience with a Wireless Ultrasound-Guided Vacuum-Assisted Breast Biopsy Device

    PubMed Central

    Choi, E-Ryung; Han, Boo-Kyung; Ko, Eun Sook; Ko, Eun Young; Choi, Ji Soo; Cho, Eun Yoon; Nam, Seok Jin

    2015-01-01

    Objective To determine the imaging characteristic of frequent target lesions of wireless ultrasound (US)-guided, vacuum-assisted breast biopsy (Wi-UVAB) and to evaluate diagnostic yield, accuracy and complication of the device in indeterminate breast lesions. Materials and Methods From March 2013 to October 2014, 114 women (age range, 29–76 years; mean age, 50.0 years) underwent Wi-UVAB using a 13-gauge needle (Mammotome Elite®; Devicor Medical Products, Cincinnati, OH, USA). In 103 lesions of 96 women with surgical (n = 81) or follow-up (n = 22) data, complications, biopsy procedure, imaging findings of biopsy targets and histologic results were reviewed. Results Mean number of biopsy cores was 10 (range 4–25). Nine patients developed moderate bleeding. All lesions were suspicious on US, and included non-mass lesions (67.0%) and mass lesions (33.0%). Visible calcifications on US were evident in 57.3% of the target lesions. Most of the lesions (93.2%) were nonpalpable. Sixty-six (64.1%) were malignant [ductal carcinoma in situ (DCIS) rate, 61%] and 12 were high-risk lesions (11.7%). Histologic underestimation was identified in 11 of 40 (27.5%). DCIS cases and in 3 of 9 (33.3%) high-risk lesions necessitating surgery. There was no false-negative case. Conclusion Wi-UVAB is very handy and advantageous for US-unapparent non-mass lesions to diagnose DCIS, especially for calcification cases. Histologic underestimation is unavoidable; still, Wi-UVAB is safe and accurate to diagnose a malignancy. PMID:26630136

  9. Computer-assisted comparison of analysis and test results in transportation experiments

    SciTech Connect

    Knight, R.D.; Ammerman, D.J.; Koski, J.A.

    1998-05-10

    As a part of its ongoing research efforts, Sandia National Laboratories` Transportation Surety Center investigates the integrity of various containment methods for hazardous materials transport, subject to anomalous structural and thermal events such as free-fall impacts, collisions, and fires in both open and confined areas. Since it is not possible to conduct field experiments for every set of possible conditions under which an actual transportation accident might occur, accurate modeling methods must be developed which will yield reliable simulations of the effects of accident events under various scenarios. This requires computer software which is capable of assimilating and processing data from experiments performed as benchmarks, as well as data obtained from numerical models that simulate the experiment. Software tools which can present all of these results in a meaningful and useful way to the analyst are a critical aspect of this process. The purpose of this work is to provide software resources on a long term basis, and to ensure that the data visualization capabilities of the Center keep pace with advancing technology. This will provide leverage for its modeling and analysis abilities in a rapidly evolving hardware/software environment.

  10. A proposal to implement a quantum delayed choice experiment assisted by cavity QED

    NASA Astrophysics Data System (ADS)

    de Almeida, N. G.; Avelar, A. T.; Cardoso, W. B.

    2014-03-01

    We propose a scheme with current technology to implement a quantum delayed-choice experiment in the realm of cavity QED. Our scheme uses two-level atoms interacting on and off resonantly with a single mode of a high Q cavity. At the end of the protocol, the state of the cavity returns to its ground state, allowing new sequential operations. The particle and wave behavior, which are verified in a single experimental setup, are postselected after the atomic states are selectively detected.

  11. The Importance of Visual Experience, Gender, and Emotion in the Assessment of an Assistive Tactile Mouse.

    PubMed

    Brayda, Luca; Campus, Claudio; Memeo, Mariacarla; Lucagrossi, Laura

    2015-01-01

    Tactile maps are efficient tools to improve spatial understanding and mobility skills of visually impaired people. Their limited adaptability can be compensated with haptic devices which display graphical information, but their assessment is frequently limited to performance-based metrics only which can hide potential spatial abilities in O&M protocols. We assess a low-tech tactile mouse able to deliver three-dimensional content considering how performance, mental workload, behavior, and anxiety status vary with task difficulty and gender in congenitally blind, late blind, and sighted subjects. Results show that task difficulty coherently modulates the efficiency and difficulty to build mental maps, regardless of visual experience. Although exhibiting attitudes that were similar and gender-independent, the females had lower performance and higher cognitive load, especially when congenitally blind. All groups showed a significant decrease in anxiety after using the device. Tactile graphics with our device seems therefore to be applicable with different visual experiences, with no negative emotional consequences of mentally demanding spatial tasks. Going beyond performance-based assessment, our methodology can help with better targeting technological solutions in orientation and mobility protocols. PMID:25935047

  12. The lived experience of moral distress: nurses who assisted with elective abortions.

    PubMed

    Hanna, Debra R

    2005-01-01

    The concept of moral distress has been studied mainly as an occupational issue and has not been developed for use in clinical practice. This study was designed to bridge prior studies of occupational moral distress with future clinical investigations of moral distress. Study aims were to discover the essence, properties, and full content domain of the concept of moral distress in order to develop a universal definition of the concept. A modified phenomenological study of nurses' experience of a particular moral issue was conducted. A maximum variation sampling strategy was used to recruit a final sample of registered nurses (N = 10). Interior aversion is the essential act of moral distress. Five properties of the lived experience of moral distress were identified: perception, pain, valuing, altered participation, and perspective. Three types of moral distress identified in this study were: shocked, muted, and suppressed (persistent). Type of moral distress was related to situational conditions, recognition of moral ends, quality of coping processes, and temporal breadth. Negative outcomes of moral distress, which probably exist, were undetectable with this study design. The definition has been composed in universal terms, but remains tentative, since the full content domain of moral distress was largely but not definitively identified. PMID:15989169

  13. Thermal creep-assisted dust lifting on Mars: Wind tunnel experiments for the entrainment threshold velocity

    NASA Astrophysics Data System (ADS)

    Küpper, Markus; Wurm, Gerhard

    2015-07-01

    In this work we present laboratory measurements on the reduction of the threshold friction velocity necessary for lifting dust if the dust bed is illuminated. Insolation of a porous soil establishes a temperature gradient. At low ambient pressure this gradient leads to thermal creep gas flow within the soil. This flow leads to a subsurface overpressure which supports lift imposed by wind. The wind tunnel was run with Mojave Mars Simulant and air at 3, 6, and 9mbar, to cover most of the pressure range at Martian surface levels. Our first measurements imply that the insolation of the Martian surface can reduce the entrainment threshold velocity between 4% and 19% for the conditions sampled with our experiments. An insolation activated soil might therefore provide additional support for aeolian particle transport at low wind speeds.

  14. Coupled pot and lysimeter experiments assessing plant performance in microbially assisted phytoremediation.

    PubMed

    Nicoară, Andrei; Neagoe, Aurora; Stancu, Paula; de Giudici, Giovanni; Langella, Francesca; Sprocati, Anna Rosa; Iordache, Virgil; Kothe, Erika

    2014-01-01

    We performed an experiment at pot scale to assess the effect of plant growth-promoting bacteria (PGPB) on the development of five plant species grown on a tailing dam substrate. None of the species even germinated on inoculated unamended tailing material, prompting use of compost amendment. The effect of inoculation on the amended material was to increase soil respiration, and promote elements immobilisation at plant root surface. This was associated with a decrease in the concentrations of elements in the leaching water and an increase of plant biomass, statistically significant in the case of two species: Agrostis capillaris and Festuca rubra. The experiment was repeated at lysimeter scale with the species showing the best development at pot scale, A. capillaris, and the significant total biomass increase as a result of inoculation was confirmed. The patterns of element distribution in plants also changed (the concentrations of metals in the roots of A. capillaris and F. rubra significantly decreased in inoculated treatments, while phosphorus concentration significantly increased in roots of A. capillaris in inoculated treatment at lysimeter scale). Measured variables for plant oxidative stress did not change after inoculations. There were differences of A. capillaris plant-soil system response between experimental scales as a result of different substrate column structure and plant age at the sampling moment. Soil respiration was significantly larger at lysimeter scale than at pot scale. Leachate concentrations of As, Mn and Ni had significantly larger concentrations at lysimeter scale than at pot scale, while Zn concentrations were significantly smaller. Concentrations of several metals were significantly smaller in A. capillaris at lysimeter scale than at pot scale. From an applied perspective, a system A. capillaris-compost-PGPB selected from the rhizosphere of the tailing dam native plants can be an option for the phytostabilisation of tailing dams. Results

  15. Microneedle assisted micro-particle delivery from gene guns: experiments using skin-mimicking agarose gel.

    PubMed

    Zhang, Dongwei; Das, Diganta B; Rielly, Chris D

    2014-02-01

    A set of laboratory experiments has been carried out to determine if micro-needles (MNs) can enhance penetration depths of high-speed micro-particles delivered by a type of gene gun. The micro-particles were fired into a model target material, agarose gel, which was prepared to mimic the viscoelastic properties of porcine skin. The agarose gel was chosen as a model target as it can be prepared as a homogeneous and transparent medium with controllable and reproducible properties allowing accurate determination of penetration depths. Insertions of various MNs into gels have been analysed to show that the length of the holes increases with an increase in the agarose concentration. The penetration depths of micro-particle were analysed in relation to a number of variables, namely the operating pressure, the particle size, the size of a mesh used for particle separation and the MN dimensions. The results suggest that the penetration depths increase with an increase of the mesh pore size, because of the passage of large agglomerates. As these particles seem to damage the target surface, then smaller mesh sizes are recommended; here, a mesh with a pore size of 178 μm was used for the majority of the experiments. The operating pressure provides a positive effect on the penetration depth, that is it increases as pressure is increased. Further, as expected, an application of MNs maximises the micro-particle penetration depth. The maximum penetration depth is found to increase as the lengths of the MNs increase, for example it is found to be 1272 ± 42, 1009 ± 49 and 656 ± 85 μm at 4.5 bar pressure for spherical micro-particles of 18 ± 7 μm diameter when we used MNs of 1500, 1200 and 750 μm length, respectively. PMID:24399616

  16. Stratified community responses to methane and sulfate supplies in mud volcano deposits: insights from an in vitro experiment.

    PubMed

    Zhang, Yu; Maignien, Lois; Stadnitskaia, Alina; Boeckx, Pascal; Xiao, Xiang; Boon, Nico

    2014-01-01

    Numerous studies on marine prokaryotic communities have postulated that a process of anaerobic oxidation of methane (AOM) coupled with sulfate reduction (SR) is the main methane sink in the world's oceans. AOM has also been reported in the deep biosphere. But the responses of the primary microbial players in eliciting changes in geochemical environments, specifically in methane and sulfate supplies, have yet to be fully elucidated. Marine mud volcanoes (MVs) expel a complex fluid mixture of which methane is the primary component, forming an environment in which AOM is a common phenomenon. In this context, we attempted to identify how the prokaryotic community would respond to changes in methane and sulfate intensities, which often occur in MV environments in the form of eruptions, diffusions or seepage. We applied an integrated approach, including (i) biochemical surveys of pore water originated from MV, (ii) in vitro incubation of mud breccia, and (iii) prokaryotic community structure analysis. Two distinct AOM regions were clearly detected. One is related to the sulfate methane transition zone (SMTZ) at depth of 30-55 cm below the sea floor (bsf); the second is at 165-205 cm bsf with ten times higher rates of AOM and SR. This finding contrasts with the sulfide concentrations in pore waters and supports the suggestion that potential AOM activity below the SMTZ might be an important methane sink that is largely ignored or underestimated in oceanic methane budget calculations. Moreover, the incubation conditions below the SMTZ favor the growth of methanotrophic archaeal group ANME-2 compared to ANME-1, and promote the rapid growth and high diversity of bacterial communities. These incubation conditions also promote the increase of richness in bacterial communities. Our results provide direct evidence of the mechanisms by which deep AOM processes can affect carbon cycling in the deep biosphere and global methane biochemistry. PMID:25393146

  17. How do individuals' health behaviours respond to an increase in the supply of health care? Evidence from a natural experiment.

    PubMed

    Fichera, Eleonora; Gray, Ewan; Sutton, Matt

    2016-06-01

    The efficacy of the management of long-term conditions depends in part on whether healthcare and health behaviours are complements or substitutes in the health production function. On the one hand, individuals might believe that improved health care can raise the marginal productivity of their own health behaviour and decide to complement health care with additional effort in healthier behaviours. On the other hand, health care can lower the cost of unhealthy behaviours by compensating for their negative effects. Individuals may therefore reduce their effort in healthier lifestyles. Identifying which of these effects prevails is complicated by the endogenous nature of treatment decisions and individuals' behavioural responses. We explore whether the introduction in 2004 of the Quality and Outcomes Framework (QOF), a financial incentive for family doctors to improve the quality of healthcare, affected the population's weight, smoking and drinking behaviours by applying a sharp regression discontinuity design to a sample of 32,102 individuals in the Health Survey for England (1997-2009). We find that individuals with the targeted health conditions improved their lifestyle behaviours. This complementarity was only statistically significant for smoking, which reduced by 0.7 cigarettes per person per day, equal to 18% of the mean. We investigate whether this change was attributable to the QOF by testing for other discontinuity points, including the introduction of a smoking ban in 2007 and changes to the QOF in 2006. We also examine whether medication and smoking cessation advice are potential mechanisms and find no statistically significant discontinuities for these aspects of health care supply. Our results suggest that a general improvement in healthcare generated by provider incentives can have positive unplanned effects on patients' behaviours. PMID:27183132

  18. Stratified Community Responses to Methane and Sulfate Supplies in Mud Volcano Deposits: Insights from an In Vitro Experiment

    PubMed Central

    Zhang, Yu; Maignien, Lois; Stadnitskaia, Alina; Boeckx, Pascal; Xiao, Xiang; Boon, Nico

    2014-01-01

    Numerous studies on marine prokaryotic communities have postulated that a process of anaerobic oxidation of methane (AOM) coupled with sulfate reduction (SR) is the main methane sink in the world's oceans. AOM has also been reported in the deep biosphere. But the responses of the primary microbial players in eliciting changes in geochemical environments, specifically in methane and sulfate supplies, have yet to be fully elucidated. Marine mud volcanoes (MVs) expel a complex fluid mixture of which methane is the primary component, forming an environment in which AOM is a common phenomenon. In this context, we attempted to identify how the prokaryotic community would respond to changes in methane and sulfate intensities, which often occur in MV environments in the form of eruptions, diffusions or seepage. We applied an integrated approach, including (i) biochemical surveys of pore water originated from MV, (ii) in vitro incubation of mud breccia, and (iii) prokaryotic community structure analysis. Two distinct AOM regions were clearly detected. One is related to the sulfate methane transition zone (SMTZ) at depth of 30–55 cm below the sea floor (bsf); the second is at 165–205 cm bsf with ten times higher rates of AOM and SR. This finding contrasts with the sulfide concentrations in pore waters and supports the suggestion that potential AOM activity below the SMTZ might be an important methane sink that is largely ignored or underestimated in oceanic methane budget calculations. Moreover, the incubation conditions below the SMTZ favor the growth of methanotrophic archaeal group ANME-2 compared to ANME-1, and promote the rapid growth and high diversity of bacterial communities. These incubation conditions also promote the increase of richness in bacterial communities. Our results provide direct evidence of the mechanisms by which deep AOM processes can affect carbon cycling in the deep biosphere and global methane biochemistry. PMID:25393146

  19. Effects of trap-assisted tunneling on gate-induced drain leakage in silicon-germanium channel p-type FET for scaled supply voltages

    NASA Astrophysics Data System (ADS)

    Tiwari, Vishal A.; Divakaruni, Rama; Hook, Terence B.; Nair, Deleep R.

    2016-04-01

    Silicon-germanium is considered as an alternative channel material to silicon p-type FET (pFET) for the development of energy efficient high performance transistors for 28 nm and beyond in a high-k metal gate technology because of its lower threshold voltage and higher mobility. However, gate-induced drain leakage (GIDL) is a concern for high threshold voltage device design because of tunneling at reduced bandgap. In this work, the trap-assisted tunneling and band-to-band tunneling (BTBT) effects on GIDL is analyzed and modeled for SiGe pFETs. Experimental results and Monte Carlo simulation results reveal that the pre-halo germanium pre-amorphization implant used to contain the short channel effects contribute to GIDL at the drain sidewall in addition to GIDL due to BTBT in SiGe devices. The results are validated by comparing the experimental observations with the numerical simulation and a set of calibrated models are used to describe the GIDL mechanisms for various drain and gate bias.

  20. Effectiveness of different methods to control legionella in the water supply: ten-year experience in an Italian university hospital.

    PubMed

    Marchesi, I; Marchegiano, P; Bargellini, A; Cencetti, S; Frezza, G; Miselli, M; Borella, P

    2011-01-01

    We report our ten-year experience of hyperchlorination, thermal shock, chlorine dioxide, monochloramine, boilers and point-of-use filters for controlling legionella contamination in a hospital hot water distribution system. Shock disinfections were associated with a return to pre-treatment contamination levels within one or two months. We found that chlorine dioxide successfully maintained levels at <100 cfu/L, whilst preliminary experiments gave satisfactory results with monochloramine. No contamination was observed applying point-of-use filters and electric boilers at temperatures of >58°C and no cases of nosocomial legionellosis were detected in the ten-year observation period. Our performance ranking in reducing legionella contamination was filter, boiler, chlorine dioxide, hyperchlorination and thermal shock. Chlorine dioxide was the least expensive procedure followed by thermal shock, hyperchlorination, boiler and filter. We suggest adopting chlorine dioxide and electric boilers in parallel. PMID:21131100

  1. All-optical tuning of a nonlinear silicon microring assisted microwave photonic filter: theory and experiment.

    PubMed

    Long, Yun; Wang, Jian

    2015-07-13

    We propose and demonstrate an all-optical tuning mechanism to tune the response of a microwave photonic filter (MPF) based on a nonlinear silicon microring resonator (MRR). The tuning mechanism relies on the optical nonlinearities induced resonant wavelength shift in the silicon MRR, leading to the change of frequency difference between the optical carrier frequency and resonant frequency of the silicon MRR. A detailed theoretical model is established to describe the operation of the proposed all-optical tunable MPF. Two cases are studied in the experiment, i.e. the optical carrier frequency is located at the left or right side of the MRR resonant frequency. Both forward and backward pumping configurations in each case are demonstrated. Using the fabricated silicon MRR and exploiting light to control light, the central frequency of the notch MPF can be flexibly tuned by adjusting the pump light power. Moreover, the presented all-optical tuning mechanism might also facilitate interesting applications such as microwave switching and microwave modulation. PMID:26191838

  2. Sensomics-Assisted Elucidation of the Tastant Code of Cooked Crustaceans and Taste Reconstruction Experiments.

    PubMed

    Meyer, Stefanie; Dunkel, Andreas; Hofmann, Thomas

    2016-02-10

    Sensory-guided fractionation by means of ultrafiltration and cation-exchange chromatography, followed by MS/MS quantitation, and taste re-engineering experiments revealed the key taste molecules coining the characteristic taste profile of the cooked meat of king prawns. Furthermore, quantitative analysis demonstrated that the taste differences between crustaceans are due to quantitative differences in the combinatorial code of tastants, rather than to qualitative differences in the tastant composition. Besides the amino acids glycine, L-proline, and L-alanine, the characteristic seafood-like sweet profile was found to be due to the sweet modulatory action of quaternary ammonium compounds, among which betaine, homarine, stachydrin, and trimethylamine-N-oxide were found as the key contributors on the basis of dose-activity considerations. Knowledge of this combinatorial tastant code provides the foundation for the development of more sophisticated crustacean flavors that are lacking any heavy metal ions and allergenic proteins present when using crustacean extracts for food flavoring. PMID:26795370

  3. Considerations for clinics and practitioners treating foreign patients with assisted reproductive technology: lessons from experiences at Ghent University Hospital, Belgium.

    PubMed

    De Sutter, Petra

    2011-11-01

    Cross-border reproductive care (CBRC) is not a new concept, having been around since the beginning of assisted reproductive technology. Countries having taken the lead in developing new technologies have seen an influx of patients from other countries, because of legal limitations or the unavailability of good-quality care in their home country. This paper describes the experience of the Ghent University Hospital fertility centre with Dutch and French patients and tries to set out standards of care for CBRC patients. Dutch patients usually have longer histories, more complex pathology and are better informed, more outspoken and more financially secure. Thus, the care for these patients is challenging. The standards of care should be the same for local patients and CBRC patients; however, the nature of the complexity of the problems they come with will necessitate more time investment. Experience shows that many patients who have no access to treatment in their own country obtain reasonably good results. Some of them, however, are beyond possible help and these patients need a high standard of psychological care. All should be done to avoid that cross-border patients compromise the local care system. Special arrangements should be taken to manage possible complications following treatment. PMID:21945265

  4. Our experience of fibrin sealant-assisted implantation of Ahmed glaucoma valve

    PubMed Central

    Choudhari, Nikhil S; Neog, Aditya; Sharma, Anuj; Iyer, Geetha K; Srinivasan, Bhaskar

    2013-01-01

    Aim: To report our experience with the fibrin sealant as a suture substitute for securing the human scleral patch graft during implantation of Ahmed glaucoma valve (AGV). Materials and Methods: A retrospective, non-comparative study of 12 eyes of 12 patients who underwent an AGV implantation with fibrin sealant for part of the procedure during June 2009 to September 2010. Results: The mean patient age was 21.5 ± 20.6 years. Male: Female ratio was 2 : 1. Seven (58.3%) patients were monocular. The indications for AGV were varied. The mean number of intra-ocular surgeries prior to an implantation of AGV was 1.8. The mean follow-up duration was 24.5 ± 17.9 weeks. There was a statistically significant reduction in the mean IOP and in the mean number of anti-glaucoma medications at the final visit compared to the pre-operative values (P < 0.01, paired t test). Conjunctival retraction was seen in 1 (8.3%) case. The scleral patch graft was retracted posteriorly in another (8.3%) case. There was no case of AGV tube exposure, tube-cornea touch, or conjunctival erosion. Vision threatening complication viz. late post-operative rhegmatogenous retinal detachment, unlikely to be related to the use of the fibrin sealant, occurred in 2 (16.6%) eyes. Conclusion: The fibrin sealant offers the advantages of safety and convenience to the placement of a scleral patch graft during an AGV implantation. PMID:23275217

  5. Oncological and functional results of open, robot-assisted and laparoscopic radical prostatectomy: does surgical approach and surgical experience matter?

    PubMed

    Herrmann, T R; Rabenalt, R; Stolzenburg, J U; Liatsikos, E N; Imkamp, F; Tezval, H; Gross, A J; Jonas, U; Burchardt, M

    2007-04-01

    The treatment of prostate cancer has undergone a fundamental change in the last decade. New surgical and nonsurgical minimal invasive methods have evolved. As the methodology of the different treatments is commonly known to urologists, this article focuses on oncological and functional outcome of open retropubic (ORP), trans- or extraperitoneal endoscopical (LRP), and robot-assisted radical prostatectomy (RALP), based on personal experience and review of the literature. A MEDLINE search was performed to review the literature on LRP and RALP between 1982 and 2007 with special emphasis on oncological and functional results, technical considerations, comparison of LRP and RALP to ORP, laparoscopic training, historical aspects, and cost-efficiency of the techniques. Based on diligent training and proctoring programs, a continuous dissemination of laparoscopic techniques takes place. There is a trend towards the extraperitoneal access in most of the minimal invasive programs at least in the European community. Mid-term outcomes of LRP and short-term outcomes of RALP achieved equivalence to open surgery with regards to complications, oncologic and functional results. Distinct advantages of LRP include less postoperative pain, lower transfusion rates, shorter convalescence, and better cosmetics. In contrast to RALP, LRP reaches cost-equivalence with open surgery in selected centers. LRP and RALP reproduce the short-term results of open surgery while providing the advantages of a minimal access. Video-assisted teaching improves the transfer of anatomical knowledge and technical knowhow, but the discussion about the longer learning curve for laparoscopy handling remains. The future will show if European centers adopt the use of robots comparable to the United States. PMID:17354014

  6. The role of technical assistance in expanding access to Xpert(®) MTB/RIF: experience in sub-Saharan Africa.

    PubMed

    Umubyeyi, A N; Bonsu, F; Chimzizi, R; Jemal, S; Melese, M; Ruttoh, E; Mundy, C

    2016-03-21

    To improve tuberculosis (TB) diagnosis, many national TB programmes have committed to deploying Xpert(®) MTB/RIF. Implementation of this relatively new technology has suffered from a lack of comprehensive technical assistance, however, including the formulation of policies and plans to address operational issues. While providing technical assistance, we observed numerous operational challenges in the implementation and scale-up of Xpert in five sub-Saharan African countries: low coverage, poor laboratory infrastructure, limited access, poor linkages to treatment, inadequate data on outcomes, problems with specimen transport, diagnostic algorithms that are not aligned with updated World Health Organization recommendations on target patient groups and financing challenges. We recommend better country preparedness and training, laboratory information and quality systems, supply management and referral mechanisms. PMID:27051609

  7. Nursing Supplies

    MedlinePlus

    ... Stages Listen Español Text Size Email Print Share Nursing Supplies Page Content Article Body Throughout most of ... budget. (Nursing equipment also makes wonderful baby gifts.) Nursing Bras A well-made nursing bra that comfortably ...

  8. Power Supply

    NASA Technical Reports Server (NTRS)

    1991-01-01

    Maxwell Laboratories capacitor charging power supply is the first commercial spinoff from the NASA CCDS program - a consortia of industries and government establishments to accelerate development of ground and space based commercial applications of NASA technology. The power supply transforms and conditions large voltages to charge capacitors used in x-ray sources, medical accelerators, etc. It is lighter, more reliable, more compact and efficient. Originally developed for space lasers, its commercial potential was soon recognized.

  9. Students with Disabilities Experience in Higher Education Online Courses: An Exploratory Study of Self-Efficacy, Use of Assistive Technologies and Mobile Media

    ERIC Educational Resources Information Center

    Francis, Chandinie Devi Parasram

    2012-01-01

    The overarching aim of this mixed methods study was to explore the online experiences of students with disabilities, with particular focus on students' use of assistive technologies, mobile media and self-efficacy. Using a multifaceted an integrative approach, this study considered a framework of universal design, Scherer's Matching…

  10. 43 CFR 12.730 - Buy American Act-Supplies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 1 2013-10-01 2013-10-01 false Buy American Act-Supplies. 12.730 Section... REQUIREMENTS AND COST PRINCIPLES FOR ASSISTANCE PROGRAMS Buy American Requirements for Assistance Programs Buy American Act-Supplies § 12.730 Buy American Act—Supplies. As prescribed in § 12.725, insert the...

  11. 43 CFR 12.730 - Buy American Act-Supplies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 1 2011-10-01 2011-10-01 false Buy American Act-Supplies. 12.730 Section... REQUIREMENTS AND COST PRINCIPLES FOR ASSISTANCE PROGRAMS Buy American Requirements for Assistance Programs Buy American Act-Supplies § 12.730 Buy American Act—Supplies. As prescribed in § 12.725, insert the...

  12. 43 CFR 12.730 - Buy American Act-Supplies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Buy American Act-Supplies. 12.730 Section... REQUIREMENTS AND COST PRINCIPLES FOR ASSISTANCE PROGRAMS Buy American Requirements for Assistance Programs Buy American Act-Supplies § 12.730 Buy American Act—Supplies. As prescribed in § 12.725, insert the...

  13. 43 CFR 12.730 - Buy American Act-Supplies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 1 2012-10-01 2011-10-01 true Buy American Act-Supplies. 12.730 Section... REQUIREMENTS AND COST PRINCIPLES FOR ASSISTANCE PROGRAMS Buy American Requirements for Assistance Programs Buy American Act-Supplies § 12.730 Buy American Act—Supplies. As prescribed in § 12.725, insert the...

  14. 43 CFR 12.730 - Buy American Act-Supplies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false Buy American Act-Supplies. 12.730 Section... REQUIREMENTS AND COST PRINCIPLES FOR ASSISTANCE PROGRAMS Buy American Requirements for Assistance Programs Buy American Act-Supplies § 12.730 Buy American Act—Supplies. As prescribed in § 12.725, insert the...

  15. Trends in the Management of Patients With Left Ventricular Assist Devices Presenting for Noncardiac Surgery: A 10-Year Institutional Experience.

    PubMed

    Stone, Marc; Hinchey, Joseph; Sattler, Christopher; Evans, Adam

    2016-09-01

    In our institution, the vast majority of patients presenting for noncardiac surgery (NCS) while supported by a left ventricular assist device (LVAD) are now cared for by noncardiac-trained anesthesiologists as the result of a decade of educational intervention to effect this transition. This represents a significant departure from the published experiences of other institutions. With institutional review board approval, we queried the database of our anesthesia record keeping system (CompuRecord) to determine various aspects of the perioperative management of these patients from July 1, 2003, through June 30, 2013, during which time 271 NCS procedures were performed on adult patients supported by LVADs. Over the entire study period (2003-2013), anesthetic care was provided by a cardiac anesthesiologist 47% of the time and by a noncardiac anesthesiologist 53% of the time. However, by the time period 2012-2013, 88% of the NCS procedures were staffed by a noncardiac anesthesiologist. Despite the prevalence of continuous flow devices in this series, the use of invasive blood pressure monitoring decreased dramatically by the later years of the study. Vasoactive and inotropic medications were rarely required intraoperatively. No intraoperative cardiac arrests, thromboembolic complications, or device malfunctions occurred. Our conclusion is that NCS procedures on LVAD-supported patients can be safely managed by educated noncardiac anesthesiologists. PMID:26685184

  16. Ghost peaks observed after AP-MALDI experiment may disclose new ionization mechanism of matrix assisted hypersonic velocity impact ionization

    PubMed Central

    Moskovets, Eugene

    2015-01-01

    RATIONALE Understanding the mechanisms of MALDI promises improvements in the sensitivity and specificity of many established applications in the field of mass spectrometry. This paper reports a serendipitous observation of a significant ion yield in a post-ionization experiment conducted after the sample has been removed from a standard atmospheric pressure (AP)-MALDI source. This post-ionization is interpreted in terms of collisions of microparticles moving with a hypersonic velocity into a solid surface. Calculations show that the thermal energy released during such collisions is close to that absorbed by the top matrix layer in traditional MALDI. The microparticles, containing both the matrix and analytes, could be detached from a film produced inside the inlet capillary during the sample ablation and accelerated by the flow rushing through the capillary. These observations contribute some new perspective to ion formation in both laser and laserless matrix-assisted ionization. METHODS An AP-MALDI ion source hyphenated with a three-stage high-pressure ion funnel system was utilized for peptide mass analysis. After the laser was turned off and MALDI sample was removed, ions were detected during a gradual reduction of the background pressure in the first funnel. The constant-rate pressure reduction led to the reproducible appearance of different singly- and doubly-charged peptide peaks in mass spectra taken a few seconds after the end of the MALDI analysis of a dried-droplet spot. RESULTS The ion yield as well as the mass range of ions observed with a significant delay after a completion of the primary MALDI analysis depended primarily on the background pressure inside the first funnel. The production of ions in this post-ionization step was exclusively observed during the pressure drop. A lower matrix background and significant increase in relative yield of double-protonated ions are reported. CONCLUSIONS The observations were partially consistent with a model of

  17. Tuning magnet power supply

    SciTech Connect

    Han, B.M.; Karady, G.G.; Thiessen, H.A.

    1989-01-01

    The particles in a Rapid Cycling Accelerator are accelerated by rf cavities, which are tuned by dc biased ferrite cores. The tuning is achieved by the regulation of bias current, which is produced by a power supply. The tuning magnet power supply utilizes a bridge circuit, supplied by a three phase rectifier. During the rise of the current, when the particles are accelerated, the current is controlled with precision by the bridge which operates a power amplifier. During the fall of the current, the bridge operates in a switching mode and recovers the energy stored in the ferrites. The recovered energy is stored in a capacitor bank. The bridge circuit is built with 150 power transistors. The drive, protection and control circuit were designed and built from commercial component. The system will be used for a rf cavity experiment in Los Alamos and will serve as a prototype tuning power supply for future accelerators. 1 ref., 7 figs.

  18. Development of Power Assisting Suit

    NASA Astrophysics Data System (ADS)

    Yamamoto, Keijiro; Ishii, Mineo; Hyodo, Kazuhito; Yoshimitsu, Toshihiro; Matsuo, Takashi

    In order to realize a wearable power assisting suit for assisting a nurse to carry a patient in her arms, the power supply and control systems of the suit have to be miniaturized, and it has to be wireless and pipeline-less. The new wearable suit consists of shoulders, arms, back, waist and legs units to be fitted on the nurse's body. The arms, waist and legs have new pneumatic rotary actuators driven directly by micro air pumps supplied by portable Ni-Cd batteries. The muscle forces are sensed by a new muscle hardness sensor utilizing a sensing tip mounted on a force sensing film device. An embedded microcomputer is used for the calculations of control signals. The new wearable suit was applied practically to a human body and a series of movement experiments that weights in the arms were held and taken up and down was performed. Each unit of the suit could transmit assisting torque directly to each joint verifying its practicability.

  19. [Experience of medical assistance in the hosital of Plesetsk Cosmodrome under conditions of large patient load after explosion of a launch vehicle].

    PubMed

    Plekhanov, V N; Mel'nikov, O N; Shut', A D

    2013-11-01

    Military hospital of Plesetsk Cosmodrome was founded on 20 December 1958. The aims of the hospital were always connected with medical support of the cosmodrome, including emergency situations. On 18 March 1980 a Vostok-2M rocket exploded on its launch pad during a fuelling operation. Experience of medical assistance under conditions of large patient load showed the necessity of constant readiness to medical assistance to patients with combined pathology (burn injury, orthopedic trauma and thermochemical injury of the upper respiratory tract), expediency of compact patient accommodation along with the modern anaesthetic machine and readiness to frequent suction bronchoscopy. PMID:24611312

  20. Is the learning curve for video-assisted thoracoscopic lobectomy affected by prior experience in open lobectomy?

    PubMed

    Okyere, Sharon; Attia, Rizwan; Toufektzian, Levon; Routledge, Tom

    2015-07-01

    A best evidence topic was written according to a structured protocol. The question addressed is the learning curve for video-assisted thoracoscopic (VATS) lobectomy affected by prior experience in open lobectomy? Two hundred and two studies were identified of which seven presented the best evidence on the topic. The authors, date, journal, country of publication, study type, participating surgeon and relevant outcomes are tabulated. The studies presented discuss the learning experiences of surgeons with a range of proficiency in open lobectomy in performing VATS lobectomy. Four of the studies made direct comparisons between the outcomes achieved by trainees and fully qualified surgeons. Trainees performed a total of 154 VATS lobectomies and the consultants performed 714. The reported number of open lobectomies performed by trainees ranged 14-50. In one study, a qualified surgeon who had performed 100 open lobectomies achieved a statistically significant progression in his learning curve and was able to safely perform VATS lobectomies after 6 months. A trainee who had performed only 14 open lobectomies achieved a similar blood loss to his experienced supervisors (P = 0.79). Two trainee surgeons who had each performed at least 20 open lobectomies achieved similar mean intraoperative blood loss (P = 0.2) and complication rate (P = 0.4) to their experienced consultant when performing VATS lobectomy. Average duration of chest drainage was similar between consultant and trainee groups (P = 0.34) and was improved in favour of trainees in one group (P < 0.001); this might be due to the fact that they operated on more technically straightforward cases. Four trainee surgeons who had performed at least 50 open pulmonary resections each managed to achieve a similar mean operative time to their consultant in their first 46 cases, and a lower morbidity (26 vs 34.7%). There was no increase in mortality in the trainee groups. Surgeons with limited experience in open lobectomy can

  1. SUMA (Supply Management Project), a management tool for post-disaster relief supplies.

    PubMed

    de Ville de Goyet, C; Acosta, E; Sabbat, P; Pluut, E

    1996-01-01

    Frequently in the wake of disasters, large amounts of humanitarian supplies arrive from multiple sources within the country or from abroad. Only a portion of these donations actually responds to specific requests from the affected country. A significant part consists of unsolicited donations whose value--in terms of meeting immediate, life-threatening needs--is questioned by many disaster managers. In 1990, WHO initiated a supply management project, known as "SUMA", to provide national authorities with a management tool and the skills to sort and inventory large amounts of relief supplies in a short period of time. It is a technical cooperation programme to assist the local coordinating agency to get an accurate picture of what is potentially available in the affected area, and to sort the most valuable relief items from those of doubtful usefulness. National authorities have developed their SUMA teams in many situations, both in Latin America and the Caribbean; this article describes three of these experiences. A flood in Costa Rica, in 1995, where the Red Cross assumed national responsibility for managing relief supplies donated locally. The earthquake in Paéz, Colombia, also in 1995, where the National Disaster Committee activated SUMA for all supplies sent to the disaster area, with the exception of specialized health shipments channelled through the Ministry of Health. In Haiti, in 1994, a complex disaster was compounded by a tropical storm. All civilian supplies arriving at the airport were processed by the SUMA team which included customs officers among its members. The traditional problem of unsorted and inappropriate supplies, noted in most international disasters, seems to have been negligible, a trend which can perhaps be credited to 20 years of preparedness activities in Latin America and the Caribbean. The superficial analysis of the data underlines the potential for operational research on the standardized databases generated by SUMA. PMID:9170233

  2. Power supply

    DOEpatents

    Yakymyshyn, Christopher Paul; Hamilton, Pamela Jane; Brubaker, Michael Allen

    2007-12-04

    A modular, low weight impedance dropping power supply with battery backup is disclosed that can be connected to a high voltage AC source and provide electrical power at a lower voltage. The design can be scaled over a wide range of input voltages and over a wide range of output voltages and delivered power.

  3. Becoming physics people: Development of physics identity in self-concept and practice through the Learning Assistant experience

    NASA Astrophysics Data System (ADS)

    Close, Eleanor

    2016-03-01

    The physics department at Texas State University has implemented a Learning Assistant (LA) program with reform-based instructional changes in our introductory course sequences. We are interested in how participation in the LA program influences LAs' identity both as physics students and as physics teachers; in particular, how being part of the LA community changes participants' self-concepts and their day-to-day practice. We analyze video of weekly LA preparation sessions and interviews with LAs as well as written artifacts from program applications, pedagogy course reflections, and evaluations. Our analysis of self-concepts is informed by the identity framework developed by Hazari et al., and our analysis of practice is informed by Lave and Wenger's theory of Communities of Practice. Regression models from quantitative studies show that the physics identity construct strongly predicts intended choice of a career in physics; the goal of our current project is to understand the details of the impacts of participation in the LA experience on participants' practice and self-concept, in order to identify critical elements of LA program structure that positively influence physics identity and physics career intentions for students. Our analysis suggests that participation in the LA program impacts LAs in ways that support both stronger ``physics student'' identity and stronger ``physics instructor'' identity, and that these identities are reconciled into a coherent integrated physics identity. In addition to becoming more confident and competent in physics, LAs perceive themselves to have increased competence in communication and a stronger sense of belonging to a supportive and collaborative community; participation in the LA program also changes their ways of learning and of being students, both within and beyond physics. This research and the TXST LA program are supported by NSF DUE-1240036, NSF DUE-1431578, and the Halliburton Foundation.

  4. Effects of post-capture ventilation assistance and elevated water temperature on sockeye salmon in a simulated capture-and-release experiment

    PubMed Central

    Robinson, Kendra A.; Hinch, Scott G.; Gale, Marika K.; Clark, Timothy D.; Wilson, Samantha M.; Donaldson, Michael R.; Farrell, Anthony P.; Cooke, Steven J.; Patterson, David A.

    2013-01-01

    The live release of wild adult Pacific salmon (Oncorhynchus spp.) following capture is a management tactic often used in commercial, aboriginal, and recreational fisheries. Fisheries capture and handling can be both exhausting and stressful to fish, which can limit their ability to swim and survive after release. As a result, researchers have assessed methods intended to improve post-release survival by assisting the flow of water over the gills of fish prior to release. Such approaches use recovery bags or boxes that direct water over the gills of restrained fish. This study evaluated a method of assisting ventilation that mimics one often employed by recreational anglers (i.e. holding fish facing into a current). Under laboratory conditions, wild Fraser River sockeye salmon (Oncorhynchus nerka) either received manual ventilation assistance for 1 min using a jet of water focused at the mouth or were left to recover unassisted following a capture-and-release simulation. A control group consisted of fish that were not exposed to the simulation or ventilation assistance. The experiment was conducted at 16 and 21°C, average and peak summer water temperatures for the Fraser River, and fish survival was monitored for 33 days. At 21°C, all fish perished within 3 days after treatment in all experimental groups, highlighting the consequences of handling adult sockeye salmon during elevated migration temperatures. Survival was higher at 16°C, with fish surviving on average 15–20 days after treatment. At 16°C, the capture-and-release simulation and ventilation assistance did not affect the survival of males; however, female survival was poor after the ventilation assistance compared with the unassisted and control groups. Our results suggest that the method of ventilation assistance tested in this study may not enhance the post-release survival of adult Fraser River sockeye salmon migrating in fresh water. PMID:27293599

  5. Oncological and functional outcomes of 722 robot-assisted radical prostatectomy (RARP) cases: The largest Canadian 5-year experience

    PubMed Central

    Tholomier, Côme; Bienz, Marc; Hueber, Pierre-Alain; Trinh, Quoc Dien; Hakim, Assaad El; Alhathal, Naif; Lebeau, Thierry; Benayoun, Serge; Valdivieso, Roger; Liberman, Dan; Saad, Fred; Lattouf, Jean-Baptiste; Widmer, Hugues; Begin, Louis; Latour, Mathieu; Zorn, Kevin C.

    2014-01-01

    Introduction: While RARP (robotic-assisted radical prostatectomy) has become the predominant surgical approach to treat localized prostate cancer, there is little Canadian data on its oncological and functional outcomes. We describe the largest RARP experience in Canada. Methods: Data from 722 patients who underwent RARP performed by 7 surgeons (AEH performed 288, TH 69, JBL 23, SB 17, HW 15, QT 7, and KCZ 303 patients) were collected prospectively from October 2006 to December 2013. Preoperative characteristics, as well as postoperative surgical and pathological outcomes, were collected. Functional and oncological outcomes were also assessed up to 72 months postoperative. Results: The median follow-up (Q1–Q3) was 18 months (9–36). The D’Amico risk stratification distribution was 31% low, 58% intermediate and 11% high-risk. The median operative time was 178 minutes (142–205), blood loss was 200 mL (150–300) and the postoperative hospital stay was 1 day (1–23). The transfusion rate was only 1.0%. There were 0.7% major (Clavien III–IV) and 10.1% minor (Clavien I–II) postoperative complications, with no mortality. Pathologically, 445 men (70%) were stage pT2, of which 81 (18%) had a positive surgical margin (PSM). In addition, 189 patients (30%) were stage pT3 and 87 (46%) with PSM. Urinary continence (0-pads/day) returned at 3, 6, and 12 months for 68%, 80%, and 90% of patients, respectively. Overall, the potency rates (successful penetration) for all men at 6, 12, and 24 months were 37%, 52%, and 59%, respectively. Biochemical recurrence was observed in 28 patients (4.9%), and 14 patients (2.4%) were referred for early salvage radiotherapy. In total, 49 patients (8.4%) underwent radio-therapy and/or hormonal therapy. Conclusions: This study shows similar results compared to other high-volume RARP programs. Being the largest RARP experience in Canada, we report that RARP is safe with acceptable oncologic outcomes in a Canadian setting. PMID:25024790

  6. 43 CFR 12.720 - Excepted articles, materials, and supplies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... excepted articles, materials, and supplies in FAR 25.108 (48 CFR 25.108). ... 43 Public Lands: Interior 1 2012-10-01 2011-10-01 true Excepted articles, materials, and supplies... Assistance Programs Buy American Act-Supplies § 12.720 Excepted articles, materials, and supplies. (a)...

  7. 43 CFR 12.720 - Excepted articles, materials, and supplies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... excepted articles, materials, and supplies in FAR 25.108 (48 CFR 25.108). ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false Excepted articles, materials, and supplies... Assistance Programs Buy American Act-Supplies § 12.720 Excepted articles, materials, and supplies. (a)...

  8. 43 CFR 12.720 - Excepted articles, materials, and supplies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... excepted articles, materials, and supplies in FAR 25.108 (48 CFR 25.108). ... 43 Public Lands: Interior 1 2013-10-01 2013-10-01 false Excepted articles, materials, and supplies... Assistance Programs Buy American Act-Supplies § 12.720 Excepted articles, materials, and supplies. (a)...

  9. 43 CFR 12.720 - Excepted articles, materials, and supplies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... excepted articles, materials, and supplies in FAR 25.108 (48 CFR 25.108). ... 43 Public Lands: Interior 1 2011-10-01 2011-10-01 false Excepted articles, materials, and supplies... Assistance Programs Buy American Act-Supplies § 12.720 Excepted articles, materials, and supplies. (a)...

  10. 43 CFR 12.720 - Excepted articles, materials, and supplies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... excepted articles, materials, and supplies in FAR 25.108 (48 CFR 25.108). ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Excepted articles, materials, and supplies... Assistance Programs Buy American Act-Supplies § 12.720 Excepted articles, materials, and supplies. (a)...

  11. Drinking Water Supply Assistance Act of 2013

    THOMAS, 113th Congress

    Sen. Enzi, Michael B. [R-WY

    2013-12-13

    12/15/2013 Read the second time. Placed on Senate Legislative Calendar under General Orders. Calendar No. 261. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  12. POLLUTION PREVENTION ASSISTANCE IN AUTOMOTIVE SUPPLY CHAIN

    EPA Science Inventory

    The purpose of this project is to develop and demonstrate the methods and techniques necessary to successfully engage small and medium sized companies within a complex auto supplier network in a comprehensive program of continuous improvement focused on reducing wastes thro...

  13. Power supply

    DOEpatents

    Hart, Edward J.; Leeman, James E.; MacDougall, Hugh R.; Marron, John J.; Smith, Calvin C.

    1976-01-01

    An electric power supply employs a striking means to initiate ferroelectric elements which provide electrical energy output which subsequently initiates an explosive charge which initiates a second ferroelectric current generator to deliver current to the coil of a magnetic field current generator, creating a magnetic field around the coil. Continued detonation effects compression of the magnetic field and subsequent generation and delivery of a large output current to appropriate output loads.

  14. Supply Chain Coordination in Hospitals

    NASA Astrophysics Data System (ADS)

    Rego, Nazaré; de Sousa, Jorge Pinho

    This paper presents an innovative approach to support the definition of strategies for the design of alternative configurations of hospital supply chains. This approach was developed around a hybrid Tabu Search / Variable Neighbourhood Search metaheuristic, that uses several neighbourhood structures. The flexibility of the procedure allows its application to supply chains with different topologies and atypical cost characteristics. A preliminary computational experience shows the approach potential in solving large scale supply chain configuration problems. The future incorporation of this approach in a broader Decision Support System (DSS) will provide a tool that can significantly contribute to an increase of healthcare supply chains efficiency and encourage the establishment of collaborative partnerships between their members.

  15. Balancing Expectations for Employability and Family Responsibilities while on Social Assistance: Low-Income Mothers' Experiences in Three Canadian Provinces

    ERIC Educational Resources Information Center

    Gazso, Amber

    2007-01-01

    Drawing upon a discourse analysis of public-use policy documents and qualitative interview data, this paper explores how mothers on social assistance in three Canadian provinces balance actual or expected policy expectations of their employability (e.g., participation in welfare-to-work programming) with their caregiving responsibilities. The…

  16. A Healing Space: The Experiences of First Nations and Inuit Youth with Equine-Assisted Learning (EAL)

    ERIC Educational Resources Information Center

    Dell, Colleen Anne; Chalmers, Darlene; Bresette, Nora; Swain, Sue; Rankin, Deb; Hopkins, Carol

    2011-01-01

    The Nimkee NupiGawagan Healing Centre (NNHC) in Muncey, ON provides residential treatment to First Nations and Inuit youth who abuse solvents. As a complement to its culture-based programming, in 2008 the centre began offering weekly equine-assisted learning (EAL) curriculum to its clients in partnership with the Keystone Equine Centre and the…

  17. Teaching Experiences of Native and Nonnative English-Speaking Graduate Teaching Assistants and Their Perceptions of Preservice Teachers

    ERIC Educational Resources Information Center

    Ates, B.; Eslami, Z. R.

    2012-01-01

    The authors report on a qualitative multiple case study exploring the perceptions of nonnative English-speaking (NNES) and native English-speaking (NES) graduate teaching assistants (GTAs) toward undergraduate preservice teachers at a university located in the Southwestern United States. Three NNES GTAs and one NES GTA participated in the study.…

  18. Application of Theory to a Technical Assistance Experiment: Development Communication Theory and the Basic Village Education Project in Guatemala.

    ERIC Educational Resources Information Center

    Kelly, James D.

    This paper attempts to assess the influence of development communication theory on the planning and implementation of technical assistance projects in the Third World that utilize mass communication as an agent of change. Like political development theory, communication theory has often been applied in an ethnocentric manner in less developed…

  19. Teaching Assistants, Neuro-Linguistic Programming (NLP) and Special Educational Needs: "Reframing" the Learning Experience for Students with Mild SEN

    ERIC Educational Resources Information Center

    Kudliskis, Voldis

    2014-01-01

    This study examines how an understanding of two NLP concepts, the meta-model of language and the implementation of reframing, could be used to help teaching assistants enhance class-based interactions with students with mild SEN. Participants (students) completed a pre-intervention and a post-intervention "Beliefs About my Learning…

  20. The use of computer-assisted orthopaedic surgery in complex cases of hip and knee arthroplasty: experience from a developing country.

    PubMed

    Hafez, Mahmoud A

    2012-08-01

    The technology of computer-assisted orthopaedic surgery (CAOS) has been used in many developed countries for the last two decades. Initially, it was thought that CAOS would be the standard in surgical practice, but so far its clinical application has been limited due to the involved cost and complexity. The cost-effectiveness of CAOS techniques has also been questioned. Therefore, it is expected that the application of CAOS in developing countries would be more limited for the same reasons. Herein, the author presents a surgical experience of using different CAOS techniques in Egypt. Computer-assisted templating software was used in complex and neglected cases of hip arthritis and in cases of leg length discrepancy. Navigation techniques were employed in knee arthroplasty in patients with extraarticular deformities. Computer-assisted patient-specific instruments were used for bilateral simultaneous knee arthroplasty in medically unfit patients and in patients with severe articular deformities. Contrary to expectations, the experience proved that CAOS is more useful and possibly cost-effective when used in hip and knee arthroplasty for complex and neglected cases in developing countries. PMID:22752760

  1. Assisting the Assistant Principal

    ERIC Educational Resources Information Center

    Davis, James

    2008-01-01

    Retaining quality staff members is a hot topic in the public school arena. Although teachers are often the focus of concern, hiring and retaining quality assistant principals must be addressed as well. Interviewing and hiring the right assistant principal--and then ensuring that he or she remains on in a campus for several years--can do a great…

  2. Gravity-Assist Mechanical Simulator for Outreach

    NASA Technical Reports Server (NTRS)

    Doody, David F.; White, Victor E.; Schaff, Mitch D.

    2012-01-01

    There is no convenient way to demonstrate mechanically, as an outreach (or inreach) topic, the angular momentum trade-offs and the conservation of angular momentum associated with gravityassist interplanetary trajectories. The mechanical concepts that underlie gravity assist are often misunderstood or confused, possibly because there is no mechanical analog to it in everyday experience. The Gravity Assist Mech - anical Simulator is a hands-on solution to this longstanding technical communications challenge. Users intuitively grasp the concepts, meeting specific educational objectives. A manually spun wheel with high angular mass and low-friction bearings supplies momentum to an attached spherical neodymium magnet that represents a planet orbiting the Sun. A steel bearing ball following a trajectory across a glass plate above the wheel and magnet undergoes an elastic collision with the revolving magnet, illustrating the gravitational elastic collision between spacecraft and planet on a gravity-assist interplanetary trajectory. Manually supplying the angular momentum for the elastic collision, rather than observing an animation, intuitively conveys the concepts, meeting nine specific educational objectives. Many NASA and JPL interplanetary missions are enabled by the gravity-assist technique.

  3. Maintenance and supply options

    NASA Technical Reports Server (NTRS)

    1988-01-01

    The object of the Maintenance and Supply Option was to develop a high level operational philosophy related to maintenance and supply operations and incorporate these concepts into the Lunar Base Study. Specific products to be generated during this task were three trade studies and a conceptual design of the Logistic Supply Module. The crew size study was performed to evaluate crew sizes from the baseline size of four to a crew size of eight and determine the preferred crew size. The second trade study was to determine the impact of extending surface stay times and recommend a preferred duration of stay time as a function of crew, consumables, and equipment support capabilities. The third trade study was an evaluation of packaging and storage methods to determine the preferred logistics approach to support the lunar base. A modified scenario was developed and served as the basis of the individual trade studies. Assumptions and guidelines were also developed from experience with Apollo programs, Space Shuttle operations, and Space Station studies. With this information, the trade studies were performed and a conceptual design for the Logistic Supply Module was developed.

  4. Evaluation of combined matrix-assisted laser desorption/ionization time-of-flight and matrix-assisted laser desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry experiments for peptide mass fingerprinting analysis.

    PubMed

    da Silva, David; Wasselin, Thierry; Carré, Vincent; Chaimbault, Patrick; Bezdetnaya, Lina; Maunit, Benoît; Muller, Jean-François

    2011-07-15

    Peptide Mass Fingerprinting (PMF) is still of significant interest in proteomics because it allows a large number of complex samples to be rapidly screened and characterized. The main part of post-translational modifications is generally preserved. In some specific cases, PMF suffers from ambiguous or unsuccessful identification. In order to improve its reliability, a combined approach using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) and matrix-assisted laser desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry (MALDI-FTICRMS) was evaluated. The study was carried out on bovine serum albumin (BSA) digest. The influence of several important parameters (the matrix, the sample preparation method, the amount of the analyte) on the MOWSE score and the protein sequence coverage were evaluated to allow the identification of specific effects. A careful investigation of the sequence coverage obtained by each kind of experiment ensured the detection of specific peptides for each experimental condition. Results highlighted that DHB-FTICRMS and DHB- or CHCA-TOFMS are the most suited combinations of experimental conditions to achieve PMF analysis. The association (convolution) of the data obtained by each of these techniques ensured a significant increase in the MOWSE score and the protein sequence coverage. PMID:21638364

  5. Human-Supplied versus Computer-Supplied Feedback: An Empirical and Pragmatic Study.

    ERIC Educational Resources Information Center

    Croy, Marvin J.; And Others

    1994-01-01

    Reports on a study of 29 students of deductive logic that compared instructor-supplied and computer-supplied diagnostic feedback used with computer-assisted instruction programs. Dependent measures included exam performance, class attendance and responsiveness, and attitudes toward the instructor, computers, other students, and the course.…

  6. Patient-triggered synchronized assisted ventilation of newborns. Report of a preliminary study and three years' experience.

    PubMed

    Visveshwara, N; Freeman, B; Peck, M; Caliwag, W; Shook, S; Rajani, K B

    1991-12-01

    The safety, efficacy, and outcome of long-term patient-triggered synchronized assisted ventilation in infants (SAVI) was studied in very low birthweight infants (450 to 1250 g) with uncomplicated respiratory failure. Synchronization was accomplished by modified thoracic impedance technology using standard neonatal cardiorespiratory monitors with the output of the ventilation synchronizer triggering the exhalation solenoid of a standard neonatal respirator. In this nonrandomized study, the technique was found to be safe and reliable without any episodes of technical failure or adverse effects. The results indicated that in comparison with infants receiving conventional ventilation, infants receiving SAVI required (1) shorter duration of ventilation, (2) decreased duration of oxygen therapy, and (3) decreased progression of intraventricular hemorrhage to greater than or equal to grade III. Decreased duration of ventilation was statistically significant in infants weighing less than 850 g (P less than .02). These beneficial trends were ratified during a 3-year period in a total of 110 cases. PMID:1770392

  7. Treatment of lower extremity injuries due to antipersonnel mines: blast resuscitation and victim assistance team experiences in Cambodia.

    PubMed

    Parr, Reagan R; Providence, Bertram C; Burkhalter, William E; Smith, Allan C

    2003-07-01

    The two teams comprising the fiscal year 2001 Blast Resuscitation and Victim Assistance mission had the opportunity to learn from and practice mine injury treatment principles with experienced local and international war surgeons in Cambodia. Treatment principles were modifications of International Committee of the Red Cross recommendations. A total of 14 acute lower extremity mine injuries were treated. Surgery generally consisted of an open amputation or thorough irrigation and debridement using equipment readily available in any U.S. military field hospital. The surgical techniques will be described in detail. Delayed primary closure occurred 5 days later followed by prosthesis fitting (for amputees) in an International Committee of the Red Cross facility 12 weeks later. Other options and techniques will be discussed with an emphasis on applicability to U.S. military field surgery. PMID:12901462

  8. Experiments and models of general corrosion and flow-assisted corrosion of materials in nuclear reactor environments

    NASA Astrophysics Data System (ADS)

    Cook, William Gordon

    Corrosion and material degradation issues are of concern to all industries. However, the nuclear power industry must conform to more stringent construction, fabrication and operational guidelines due to the perceived additional risk of operating with radioactive components. Thus corrosion and material integrity are of considerable concern for the operators of nuclear power plants and the bodies that govern their operations. In order to keep corrosion low and maintain adequate material integrity, knowledge of the processes that govern the material's breakdown and failure in a given environment are essential. The work presented here details the current understanding of the general corrosion of stainless steel and carbon steel in nuclear reactor primary heat transport systems (PHTS) and examines the mechanisms and possible mitigation techniques for flow-assisted corrosion (FAC) in CANDU outlet feeder pipes. Mechanistic models have been developed based on first principles and a 'solution-pores' mechanism of metal corrosion. The models predict corrosion rates and material transport in the PHTS of a pressurized water reactor (PWR) and the influence of electrochemistry on the corrosion and flow-assisted corrosion of carbon steel in the CANDU outlet feeders. In-situ probes, based on an electrical resistance technique, were developed to measure the real-time corrosion rate of reactor materials in high-temperature water. The probes were used to evaluate the effects of coolant pH and flow on FAC of carbon steel as well as demonstrate of the use of titanium dioxide as a coolant additive to mitigated FAC in CANDU outlet feeder pipes.

  9. Diabetes Patients' Experiences With the Implementation of Insulin Therapy and Their Perceptions of Computer-Assisted Self-Management Systems for Insulin Therapy

    PubMed Central

    Gude, Wouter T; Holleman, Frits; Hoekstra, Joost BL; Peek, Niels

    2014-01-01

    Background Computer-assisted decision support is an emerging modality to assist patients with type 2 diabetes mellitus (T2DM) in insulin self-titration (ie, self-adjusting insulin dose according to daily blood glucose levels). Computer-assisted insulin self-titration systems mainly focus on helping patients overcome barriers related to the cognitive components of insulin titration. Yet other (eg, psychological or physical) barriers could still impede effective use of such systems. Objective Our primary aim was to identify experiences with and barriers to self-monitoring of blood glucose, insulin injection, and insulin titration among patients with T2DM. Our research team developed a computer-assisted insulin self-titration system, called PANDIT. The secondary aim of this study was to evaluate patients’ perceptions of computer-assisted insulin self-titration. We included patients who used PANDIT in a 4-week pilot study as well as patients who had never used such a system. Methods In-depth, semi-structured interviews were conducted individually with patients on insulin therapy who were randomly recruited from a university hospital and surrounding general practices in the Netherlands. The interviews were transcribed verbatim and analyzed qualitatively. To classify the textual remarks, we created a codebook during the analysis, in a bottom-up and iterative fashion. To support examination of the final coded data, we used three theories from the field of health psychology and the integrated model of user satisfaction and technology acceptance by Wixom and Todd. Results When starting insulin therapy, some patients feared a lifelong commitment to insulin therapy and disease progression. Also, many barriers arose when implementing insulin therapy (eg, some patients were embarrassed to inject insulin in public). Furthermore, patients had difficulties increasing the insulin dose because they fear hypoglycemia, they associate higher insulin doses with disease progression

  10. Assistive Devices

    MedlinePlus

    ... center provides information on VA benefits for assistive technology. Medicare − Benefits may include assistive devices, such as ... a Web site that provides information about assistive technology products. Go to the “Products” section to find ...

  11. 33 CFR 203.62 - Drought assistance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Drought assistance. 203.62... Supplies: Contaminated Water Sources and Drought Assistance § 203.62 Drought assistance. (a) Authority. The... political subdivisions, within areas determined to be drought-distressed. (b) General policy. (1) It is...

  12. 33 CFR 203.62 - Drought assistance.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Drought assistance. 203.62... Supplies: Contaminated Water Sources and Drought Assistance § 203.62 Drought assistance. (a) Authority. The... political subdivisions, within areas determined to be drought-distressed. (b) General policy. (1) It is...

  13. 33 CFR 203.62 - Drought assistance.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Drought assistance. 203.62... Supplies: Contaminated Water Sources and Drought Assistance § 203.62 Drought assistance. (a) Authority. The... political subdivisions, within areas determined to be drought-distressed. (b) General policy. (1) It is...

  14. 33 CFR 203.62 - Drought assistance.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Drought assistance. 203.62... Supplies: Contaminated Water Sources and Drought Assistance § 203.62 Drought assistance. (a) Authority. The... political subdivisions, within areas determined to be drought-distressed. (b) General policy. (1) It is...

  15. 33 CFR 203.62 - Drought assistance.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Drought assistance. 203.62... Supplies: Contaminated Water Sources and Drought Assistance § 203.62 Drought assistance. (a) Authority. The... political subdivisions, within areas determined to be drought-distressed. (b) General policy. (1) It is...

  16. A National Survey of Assisted Living Facilities

    ERIC Educational Resources Information Center

    Hawes, Catherine; Phillips, Charles D.; Rose, Miriam; Holan, Scott; Sherman, Michael

    2003-01-01

    Purpose: Throughout the 1990s, assisted living was the most rapidly growing form of senior housing. The purpose of this paper is to describe the existing supply of assisted living facilities (ALFs) and examine the extent to which they matched the philosophy of assisted living. Design and Methods: The study involved a multistage sample design to…

  17. Intelligent speed adaptation as an assistive device for drivers with acquired brain injury: a single-case field experiment.

    PubMed

    Klarborg, Brith; Lahrmann, Harry; NielsAgerholm; Tradisauskas, Nerius; Harms, Lisbeth

    2012-09-01

    Intelligent speed adaptation (ISA) was tested as an assistive device for drivers with an acquired brain injury (ABI). The study was part of the "Pay as You Speed" project (PAYS) and used the same equipment and technology as the main study (Lahrmann et al., in press-a, in press-b). Two drivers with ABI were recruited as subjects and had ISA equipment installed in their private vehicle. Their speed was logged with ISA equipment for a total of 30 weeks of which 12 weeks were with an active ISA user interface (6 weeks=Baseline 1; 12 weeks=ISA period; 12 weeks=Baseline 2). The subjects participated in two semi-structured interviews concerning their strategies for driving with ABI and for driving with ISA. Furthermore, they gave consent to have data from their clinical journals and be a part of the study. The two subjects did not report any instances of being distracted or confused by ISA, and in general they described driving with ISA as relaxed. ISA reduced the percentage of the total distance that was driven with a speed above the speed limit (PDA), but the subjects relapsed to their previous PDA level in Baseline 2. This suggests that ISA is more suited as a permanent assistive device (i.e. cognitive prosthesis) than as a temporary training device. As ABI is associated with a multitude of cognitive deficits, we developed a conceptual framework, which focused on the cognitive parameters that have been shown to relate to speeding behaviour, namely "intention to speed" and "inattention to speeding". The subjects' combined status on the two independent parameters made up their "speeding profile". A comparison of the speeding profiles and the speed logs indicated that ISA in the present study was more efficient in reducing inattention to speeding than affecting intention to speed. This finding suggests that ISA might be more suited for some neuropsychological profiles than for others, and that customisation of ISA for different neuropsychological profiles may be required

  18. Experience with Vacuum-Assisted Closure in the Management of Postpneumonectomy Empyema: An Analysis of Eight Cases.

    PubMed

    Karapinar, Kemal; Saydam, Özkan; Metin, Muzaffer; Erdogan, Sertan; Aker, Cemal; Arik, Burcu; Citak, Necati

    2016-04-01

    Background The treatment of postpneumonectomic empyema is challenging. The aim of this study was to test the efficacy of vacuum-assisted closure (VAC) in the treatment of patients with open window thoracostomy (OWT). Methods Between January 2010 and April 2014, eight patients developed empyema following pneumonectomy for malignant diseases in our department and then underwent an OWT with subsequent VAC therapy; their cases were retrospectively studied. Each session of VAC therapy lasted 72 hours, and therapy was completed after approximately 6 sessions. Results OWT in six patients resulted in either decreased size or complete closure after VAC treatment. Five patients had a bronchopleural fistula (BPF), which was closed either with a tracheal stent (three patients), primary suture, or omentoplasty. The BPF in one of these patients closed during VAC therapy. The treatment failed in two patients due to the microfistula becoming obvious in one and persistence of the fistula in the other. Conclusion We believe that the use of VAC in the treatment of postpneumonectomy empyema is effective, except for patients with BPF. PMID:25602849

  19. A Comparative Study Between Laparoscopically Assisted Vaginal Hysterectomy and Vaginal Hysterectomy: Experience in a Tertiary Diabetes Care Hospital in Bangladesh

    PubMed Central

    Jahan, Samsad; Das, Tripti; Mahmud, Nusrat; Khan, Masuda Islam; Akter, Latifa; Mondol, Samiron Kumar; Yasmin, Sharmin; Nahar, Nurun; Habib, Samira Humaira; Saha, Soma; Paul, Debashish; Joarder, Mahjabin

    2011-01-01

    Objective: The study was undertaken to compare the efficiency and outcome of Laparoscopic Assisted Vaginal Hysterectomy (LAVH) and Vaginal Hysterectomy (VH) in terms of operative time, cost, estimated blood loss, hospital stay, quantity of analgesia use, intra- and postoperative complication rates and patients recovery. Materials and Methods: A total of 500 diabetic patients were prospectively collected in the study period from January 2005 through January 2009. The performance of LAVH was compared with that of VH, in a tertiary care hospital. The procedures were performed by the same surgeon. Results: There was no significant difference in terms of age, parity, body weight or uterine weight. The mean estimated blood loss in LAVH was significantly lower when compared with the VH group (126.5±39.8 ml and 100±32.8 ml), respectively. As to postoperative pain, less diclofenac was required in the LAVH group compared to the VH group (70.38±13.45 mg and 75.18±16.45 mg), respectively. Conclusions: LAVH, is clinically and economically comparable to VH, with patient benefits of less estimated blood loss, lower quantity of analgesia use, lower rate of intra- and postoperative complications, less postoperative pain, rapid patient recovery, and shorter hospital stay. PMID:26085749

  20. Food and water supply

    NASA Technical Reports Server (NTRS)

    Popov, I. G.

    1975-01-01

    Supplying astronauts with adequate food and water on short and long-term space flights is discussed based on experiences gained in space flight. Food consumption, energy requirements, and suitability of the foodstuffs for space flight are among the factors considered. Physicochemical and biological methods of food production and regeneration of water from astronaut metabolic wastes, as well as wastes produced in a closed ecological system, or as a result of technical processes taking place in various spacecraft systems are suggested for long-term space flights.

  1. Graduate Students in Transition: Assisting Students through the First Year. The First-Year Experience Monograph Series No. 50

    ERIC Educational Resources Information Center

    Tokuno, Kenneth A. Ed.

    2008-01-01

    On many campuses, graduate students are a prized resource, supporting faculty research and the undergraduate instructional mission. Yet, attrition rates among master's and doctoral students are often alarmingly high. The 50th installment of The First-Year Experience Monograph Series describes the challenges associated with entry into graduate…

  2. Understanding Mothers' Experiences of Infant Daycare: A New Approach Using Computer-Assisted Analysis of Qualitative Data.

    ERIC Educational Resources Information Center

    Rolfe, Sharne; And Others

    This paper reports on a small-scale introductory study of Australian mothers' experiences of infant day care. Ten employed, middle- and lower-socioeconomic status women with an infant in center-based day care were interviewed. Brief narrative examples from the mothers' accounts are presented. Discussion then concentrates on a new approach to…

  3. Being the Wizard behind the Curtain: Teaching Experiences of Graduate Teaching Assistants with Disabilities at U.S. Universities

    ERIC Educational Resources Information Center

    Damiani, Michelle L.; Harbour, Wendy S.

    2015-01-01

    This study investigated the teaching experiences of graduate students with disabilities, using 12 semi-structured in-person and phone interviews. We selected participants using stratified random sampling representing diverse disabilities, degree programs, and regions of the United States. Findings suggest that students engage in complex…

  4. The Feasibility of Railgun Horizontal-Launch Assist

    NASA Technical Reports Server (NTRS)

    Youngquist, Robert C.; Cox, Robert B.

    2011-01-01

    Railguns typically operate for a few milliseconds, supplying thousands of G's of acceleration to a small projectile, resulting in exceptional speeds. This paper argues through analysis and experiment, that this "standard" technology can be modified to provide 2-3 G's acceleration to a relatively heavy launch vehicle for a time period exceeding several seconds, yielding a launch assist velocity in excess of Mach 1. The key insight here is that an efficient rail gun operates at a speed approximately given by the system resistance divided by the inductance gradient, which can be tailored because recent MOSFET and ultra-capacitor advances allow very low total power supply resistances with high capacitance and augmented railgun architectures provide a scalable inductance gradient. Consequently, it should now be possible to construct a horizontal launch assist system utilizing railgun based architecture.

  5. Robot-assisted thoracoscopic esophagectomy with extensive mediastinal lymphadenectomy: experience with 114 consecutive patients with intrathoracic esophageal cancer.

    PubMed

    Park, S Y; Kim, D J; Yu, W S; Jung, H S

    2016-05-01

    The study aims to report the operative outcomes of robot-assisted thoracoscopic esophagectomy (RATE) with extensive mediastinal lymphadenectomy (ML) for intrathoracic esophageal cancer. We analyzed a prospective database of 114 consecutive patients who underwent RATE with lymph node dissection along recurrent laryngeal nerve (RLN) followed by cervical esophagogastrostomy. The study included 104 men with a mean age of 63.1 ± 0.8 years. Of these, 110 (96.5%) had squamous cell carcinoma, and the location of the tumor was upper esophagus in 7 (6.1%), middle in 62 (54.4%), and lower in 45 (39.5%). Preoperative concurrent chemoradiation was performed in 15 patients (13.2%). All but one patient underwent successful RATE, and R0 resection was achieved in 111 patients (97.4%). Extended ML and total ML were performed in 24 (21.1%) and 90 (78.9%) patients, respectively. Total operation time was 419.6 ± 7.9 minutes, and robot console time was 206.6 ± 5.2 minutes. The mean number of total, mediastinal, and RLN nodes was 43.5 ± 1.4, 24.5 ± 1.0, and 9.7 ± 0.7, respectively. The most common complication was RLN palsy (30, 26.3%), followed by anastomotic leakage (17, 14.9%) and pulmonary complications (11, 9.6%). Median hospital stay was 16 days, and 90-day mortality was observed in three patients (2.5%). On multivariate analysis, preoperative concurrent chemoradiation was a risk factor for pulmonary complications (odds ratio 7.42, 95% confidence interval 1.91-28.8, P = 0.004). RATE with extensive ML could be performed safely with acceptable postoperative outcomes. Long-term survival data should be followed in the future to verify the oncological outcome of the procedure. PMID:25716873

  6. Lipid-assisted protein transport: A diffusion-reaction model supported by kinetic experiments and molecular dynamics simulations

    NASA Astrophysics Data System (ADS)

    La Rosa, Carmelo; Scalisi, Silvia; Lolicato, Fabio; Pannuzzo, Martina; Raudino, Antonio

    2016-05-01

    The protein transport inside a cell is a complex phenomenon that goes through several difficult steps. The facilitated transport requires sophisticated machineries involving protein assemblies. In this work, we developed a diffusion-reaction model to simulate co-transport kinetics of proteins and lipids. We assume the following: (a) there is always a small lipid concentration of order of the Critical Micellar Concentration (CMC) in equilibrium with the membrane; (b) the binding of lipids to proteins modulates the hydrophobicity of the complexes and, therefore, their ability to interact and merge with the bilayer; and (c) some lipids leave the bilayer to replenish those bound to proteins. The model leads to a pair of integral equations for the time-evolution of the adsorbed proteins in the lipid bilayer. Relationships between transport kinetics, CMC, and lipid-protein binding constants were found. Under particular conditions, a perturbation analysis suggests the onset of kinks in the protein adsorption kinetics. To validate our model, we performed leakage measurements of vesicles composed by either high or low CMC lipids interacting with Islet Amyloid PolyPeptide (IAPP) and Aβ (1-40) used as sample proteins. Since the lipid-protein complex stoichiometry is not easily accessible, molecular dynamics simulations were performed using monomeric IAPP interacting with an increasing number of phospholipids. Main results are the following: (a) 1:1 lipid-protein complexes generally show a faster insertion rate proportional to the complex hydrophobicity and inversely related to lipid CMC; (b) on increasing the number of bound lipids, the protein insertion rate decreases; and (c) at slow lipids desorption rate, the lipid-assisted proteins transport might exhibit a discontinuous behavior and does non-linearly depend on protein concentration.

  7. Texas Field Experiment Results: Performance of the Weatherization Assistance Program in Hot-Climate, Low-Income Homes

    SciTech Connect

    McCold, Lance Neil; Goeltz, Rick; Ternes, Mark P; Berry, Linda G

    2008-04-01

    A field test involving 35 houses was performed in Texas between 2000 and 2003 to study the response of low-income homes in hot climates to weatherization performed as part of the U.S Department of Energy Weatherization Assistance Program and to investigate certain methods to improve weatherization performance. The study found that improved Program designs and the use of advanced energy audits resulted in better weatherization measures being installed (use of blower doors to guide the infiltration work, more frequent installation of attic insulation, and installation of wall insulation) in the study homes, improved space-heating savings performance compared to the Program as implemented in the hot climates in 1989, and more comfortable indoor temperatures. Two key policy dilemmas for Texas and other hot-climate states were highlighted by the study; namely, how to balance expenditures between installing cost-effective weatherization measures and performing health, safety, and repair items, and that health, safety, and repair items can have an adverse impact on energy savings, which further complicates the weatherization decision process. Several occupant and equipment-related behaviors were observed in the field test homes that help explain why audits may over predict energy consumptions and savings and why air-conditioning electricity savings are difficult to measure. Based on this study, it is recommended that states in hot climates be encouraged to select from an expanded list of measures using advanced audits or other techniques, and further studies examining the benefits obtained from air conditioner measures should be performed. In addition, guidelines should be developed for the hot-climate states on how to (a) balance the objectives of saving energy, improving health and safety, and addressing repair issues, and (b) select repair items.

  8. Role of radiological-assisted cytology in intra-abdominal lesions: A 3 years’ experience in a tertiary care center

    PubMed Central

    Dosi, Shilpi; Gupta, Garima; Kawatra, Mallika; Chakrabarti, Preeti Rihal; Agrawal, Purti; Jain, Mukul Raj

    2016-01-01

    Background: Fine needle aspiration (FNA) with assistance of radiological tools such as ultrasonography (USG) and computed tomography (CT) is an effective and safe technique for diagnosing intra-abdominal neoplastic and nonneoplastic lesions. Aims and Objectives: (1) To assess the utility of image-guided cytology in the diagnosis of intra-abdominal lesions. (2) To categorize various intra-abdominal lesions according to their site of occurrence and study their cytomorphological features. Materials and Methods: A cross-sectional study was conducted in the Department of Pathology between January 2012 and January 2015. A total of 174 cases with intra-abdominal lesions were included in the study. Results: In our study, diagnostic yield was 84.5%. The mean age was found to be 52 years with M: F ratio 1.1:1. We found that 92 (52.87%) cases were in hepatobiliary region, 33 (18.96%) in adnexa, 13 (7.47%) in pancreatic-ampullary region, 14 (8.04%) in unknown abdominal lumps, 8 (4.6%) in lymph nodes, 6 (3.4%) in renal, 5 (2.87%) in retroperitoneum, 2 (1.1%) in omental nodules, and 1 (0.5%) in splenic mass. Of total 174 cases, 106 (61%) cases were malignant, 10 (5.7%) benign, 16 (9.1%) inflammatory, 27 (15.5%) inadequate, and 15 (8.7%) suspicious for malignancy. Conclusion: Ultrasound and CT-guided FNA cytology had a significant role in diagnosis of palpable and nonpalpable intra-abdominal lesions. Being a relatively quick and safe method, it also avoids invasive diagnostic procedures. PMID:27127738

  9. Our experience with transcanalicular laser-assisted endoscopic dacryocystorhinostomy (TCLADCR) in patients of chronic dacryocystitis with deviated nasal septum.

    PubMed

    Goel, Ruchi; Nagpal, Smriti; Kumar, Sushil; Kamal, Saurabh; Dangda, Sonal; Bodh, Sonam Angmo

    2015-12-01

    The purpose of this study is to study the operative difficulties and success rate of transcanalicular laser-assisted endoscopic dacryocystorhinostomy in patients of chronic dacryocystitis with deviated nasal septum (DNS). A prospective interventional clinical study of 36 consecutive patients suffering from chronic dacryocystitis with nasolacrimal duct obstruction with DNS undergoing primary TCLADCR from March to June 2011 was carried out. Diode laser was used to create a 16-mm(2) ostium which was enlarged to 64 mm(2) using Blakesley's forceps. Success was defined as anatomical patency and absence of symptoms at 12 months of follow-up. Out of the 36 patients, 25 were females with ages 20-72 years, and 19 were left sided. There were 12 high, 12 mid and 12 basal DNS towards the side of surgery, mild to moderate in severity. Intraoperatively there was difficulty in visualising the aiming beam in the nose, tedious manipulation of endoscope and excessive bleeding in 3 patients. Increased bleeding and failures were significantly higher in high DNS (Fisher exact test-2 tailed: 0.0045). The procedure was successful in 94.4 % cases with average ostium size of 21.94 mm(2) at 12 months and no statistically significant difference in success rates between mild and moderate DNS (Fisher exact test-2 tailed: 1.000). Also there was no difference in the complication rate between mild and moderate DNS (Fisher exact test-2 tailed: 0.0841). TCLADCR is an effective procedure in patients with mild to moderate mid and basal DNS and obviates the need for multiple procedures and a cutaneous scar. PMID:25702037

  10. Sponge-Like Dressings Based on the Association of Chitosan and Sericin for the Treatment of Chronic Skin Ulcers. I. Design of Experiments-Assisted Development.

    PubMed

    Mori, Michela; Rossi, Silvia; Ferrari, Franca; Bonferoni, Maria Cristina; Sandri, Giuseppina; Chlapanidas, Theodora; Torre, Maria Luisa; Caramella, Carla

    2016-03-01

    The aim of the present work was the development of sponge-like dressings based on chitosan glutamate (high molecular weight) and sericin for the treatment of chronic skin ulcers. Dressings were prepared by freeze-drying and glycine was added as cryoprotectant agent. Dressing development was assisted by design of experiments, using a simplex centroid design. Mechanical resistance, hydration propensity, viscous, and viscoelasticity properties of dressings were considered as response variables. The superimposition of the contour plots, calculated by the best fit model for each response variable, permitted to individuate a region of the factor space where the dressing of optimized quantitative composition was chosen. Such a dressing was able to absorb high amount of phosphate-buffered saline forming a gel characterized by rheological properties enabling both a lubricant and a protective effect. The optimized formulation was characterized by optimal mechanical properties and by cell proliferation and antioxidant activity on human fibroblast cell line. PMID:26886338

  11. A Search for Low-Mass Weakly Interacting Massive Particles Using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment

    SciTech Connect

    Agnese, R.; Anderson, A. J.; Asai, M.; Balakishiyeva, D.; Basu Thakur, R.; Bauer, D. A.; Billard, J.; Borgland, A.; Bowles, M. A.; Brandt, D.; Brink, P. L.; Bunker, R.; Cabrera, B.; Caldwell, D. O.; Cerdeno, D. G.; Chagani, H.; Cooley, J.; Cornell, B.; Crewdson, C. H.; Cushman, Priscilla B.; Daal, M.; Di Stefano, P. C.; Doughty, T.; Esteban, L.; Fallows, S.; Figueroa-Feliciano, E.; Godfrey, G. L.; Golwala, S. R.; Hall, Jeter C.; Harris, H. R.; Hertel, S. A.; Hofer, T.; Holmgren, D.; Hsu, L.; Huber, M. E.; Jastram, A.; Kamaev, O.; Kara, B.; Kelsey, M. H.; Kennedy, A.; Kiveni, M.; Koch, K.; Loer, B.; Lopez Asamar, E.; Mahapatra, R.; Mandic, V.; Martinez, C.; McCarthy, K. A.; Mirabolfathi, N.; Moffatt, R. A.; Moore, D. C.; Nadeau, P.; Nelson, R. H.; Page, K.; Partridge, R.; Pepin, M.; Phipps, A.; Prasad, K.; Pyle, M.; Qiu, H.; Rau, W.; Redi, P.; Reisetter, A.; Ricci, Y.; Saab, T.; Sadoulet, B.; Sander, J.; Schneck, K.; Schnee, Richard; Scorza, S.; Serfass, B.; Shank, B.; Speller, D.; Villano, A. N.; Welliver, B.; Wright, D. H.; Yellin, S.; Yen, J. J.; Young, B. A.; Zhang, J.

    2014-01-27

    SuperCDMS is an experiment designed to directly detect weakly interacting massive particles (WIMPs), a favored candidate for dark matter ubiquitous in the Universe. In this Letter, we present WIMP-search results using a calorimetric technique we call CDMSlite, which relies on voltage-assisted Luke-Neganov amplification of the ionization energy deposited by particle interactions. The data were collected with a single 0.6 kg germanium detector running for ten live days at the Soudan Underground Laboratory. A low energy threshold of (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6 GeV/c2.

  12. Search for Low-Mass Weakly Interacting Massive Particles Using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment

    NASA Astrophysics Data System (ADS)

    Agnese, R.; Anderson, A. J.; Asai, M.; Balakishiyeva, D.; Basu Thakur, R.; Bauer, D. A.; Billard, J.; Borgland, A.; Bowles, M. A.; Brandt, D.; Brink, P. L.; Bunker, R.; Cabrera, B.; Caldwell, D. O.; Cerdeno, D. G.; Chagani, H.; Cooley, J.; Cornell, B.; Crewdson, C. H.; Cushman, P.; Daal, M.; Di Stefano, P. C. F.; Doughty, T.; Esteban, L.; Fallows, S.; Figueroa-Feliciano, E.; Godfrey, G. L.; Golwala, S. R.; Hall, J.; Harris, H. R.; Hertel, S. A.; Hofer, T.; Holmgren, D.; Hsu, L.; Huber, M. E.; Jastram, A.; Kamaev, O.; Kara, B.; Kelsey, M. H.; Kennedy, A.; Kiveni, M.; Koch, K.; Loer, B.; Lopez Asamar, E.; Mahapatra, R.; Mandic, V.; Martinez, C.; McCarthy, K. A.; Mirabolfathi, N.; Moffatt, R. A.; Moore, D. C.; Nadeau, P.; Nelson, R. H.; Page, K.; Partridge, R.; Pepin, M.; Phipps, A.; Prasad, K.; Pyle, M.; Qiu, H.; Rau, W.; Redl, P.; Reisetter, A.; Ricci, Y.; Saab, T.; Sadoulet, B.; Sander, J.; Schneck, K.; Schnee, R. W.; Scorza, S.; Serfass, B.; Shank, B.; Speller, D.; Villano, A. N.; Welliver, B.; Wright, D. H.; Yellin, S.; Yen, J. J.; Young, B. A.; Zhang, J.; SuperCDMS Collaboration

    2014-01-01

    SuperCDMS is an experiment designed to directly detect weakly interacting massive particles (WIMPs), a favored candidate for dark matter ubiquitous in the Universe. In this Letter, we present WIMP-search results using a calorimetric technique we call CDMSlite, which relies on voltage-assisted Luke-Neganov amplification of the ionization energy deposited by particle interactions. The data were collected with a single 0.6 kg germanium detector running for ten live days at the Soudan Underground Laboratory. A low energy threshold of 170 eVee (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6 GeV /c2.

  13. Medical assistance during commercial airline flights: analysis of 11 years experience of the Paris Emergency Medical Service (SAMU) between 1989 and 1999.

    PubMed

    Szmajer, M; Rodriguez, P; Sauval, P; Charetteur, M P; Derossi, A; Carli, P

    2001-08-01

    Emergencies arising during commercial airline flights may have serious consequences. We report the experience of the Paris Emergency Medical Service (SAMU) in providing in-flight assistance to Air France between 1989 and 1999. During this period medical advice was sought 380 times during the carriage of about 350 million passengers. Analysis of the patient files suggests that serious emergencies were rare and that cardiopulmonary resuscitation was required only exceptionally. However the relative frequency of cardiac and neurological emergencies in our analysis supports the necessity of carrying adequate medical equipment and of having direct access to expert medical advice. The results suggest the requirement for a rigorous prospective epidemiological study of in-flight emergencies to evaluate the effectiveness of current practice and possible modifications of equipment and protocols for patient management. PMID:11719141

  14. Two-component co-injection and transfer molding and gas-assisted injection molding of polymers: Simulation and experiment

    NASA Astrophysics Data System (ADS)

    Li, Chengtao

    Two-component molding is a novel process for manufacturing polymer products with a sandwich structure or a hollow structure. Typically, two different materials are injected or transferred into a mold sequentially or simultaneously. The skin is generally a prime polymer with required surface and bulk properties for intended use. The core can be solid, foam or gas. Obtaining a uniform encapsulated structure is difficult and there are no science-based rules for optimization of process setup. Thus, a physical model and process simulations have been developed based on the kinematics and dynamics of a moving interface, and Hele-Shaw approximation. The model has incorporated temperature and shear rate dependences of viscosity of both skin and core component into the transient interface evolution. Based on the developed model, simulations have been carried out to study flow rate controlled simultaneous co-injection molding of thermoplastics, pressure-controlled sequential transfer molding of rubber compounds, and gas-assisted injection molding (GAIM). The simulation results were compared with the experimental data, and in general, good agreement was found between the predicted and experimentally measured interface distribution in moldings. For simultaneous co-injection molding, it is found that material pairs with a broad range of viscosities may be utilized. Breakthrough phenomena are mainly determined by the volume of melt of initial single phase injection and rheological properties of material combinations. When the core has a lower viscosity than the skin, or the volume of initial injection of skin melt is smaller, breakthrough is very likely. However, the breakthrough can be eliminated by controlling injection rate of the skin and core melts. For sequential transfer molding, it is found that the rubber distribution in moldings are dominated by the rheological properties of components and the volume fraction transferred, but independent of the gate pressure. When the

  15. The Benin experience: How computational modeling can assist major vaccine policy changes in low and middle income countries.

    PubMed

    Lee, Bruce Y; Schreiber, Benjamin; Wateska, Angela R; Connor, Diana L; Dicko, Hamadou M; Jaillard, Philippe; Mvundura, Mercy; Levin, Carol; Avella, Mélanie; Haidari, Leila A; Brown, Shawn T

    2015-06-01

    While scientific studies can show the need for vaccine policy or operations changes, translating scientific findings to action is a complex process that needs to be executed appropriately for change to occur. Our Benin experience provided key steps and lessons learned to help computational modeling inform and lead to major policy change. The key steps are: engagement of Ministry of Health, identifying in-country "champions," directed and efficient data collection, defining a finite set of realistic scenarios, making the study methodology transparent, presenting the results in a clear manner, and facilitating decision-making and advocacy. Generating scientific evidence is one component of policy change. Enabling change requires orchestration of a coordinated set of steps that heavily involve key stakeholders, earn their confidence, and provide them with relevant information. Our Benin EVM+CCEM+HERMES Process led to a decision to enact major changes and could serve as a template for similar approaches in other countries. PMID:25900134

  16. Health supply chain management.

    PubMed

    Zimmerman, Rolf; Gallagher, Pat

    2010-01-01

    This chapter gives an educational overview of: * The actual application of supply chain practice and disciplines required for service delivery improvement within the current health environment. * A rationale for the application of Supply Chain Management (SCM) approaches to the Health sector. * The tools and methods available for supply chain analysis and benchmarking. * Key supply chain success factors. PMID:20407173

  17. Engineering Knowledge for Assistive Living

    NASA Astrophysics Data System (ADS)

    Chen, Liming; Nugent, Chris

    This paper introduces a knowledge based approach to assistive living in smart homes. It proposes a system architecture that makes use of knowledge in the lifecycle of assistive living. The paper describes ontology based knowledge engineering practices and discusses mechanisms for exploiting knowledge for activity recognition and assistance. It presents system implementation and experiments, and discusses initial results.

  18. Different models for oral anticoagulation management may be applied provided that minimal assistance criteria are fulfilled: an Italian experience.

    PubMed

    Prisco, Domenico; Antonucci, Emilia; Grifoni, Elisa; Mazzaglia, Giampiero; Bellandi, Tommaso; Tartaglia, Riccardo; Poli, Daniela

    2009-09-01

    The efficacy of adjusted-dose oral anticoagulant therapy (OAT) in the prevention of thrombotic complications in various clinical conditions is well documented. Management of OAT requires a trained physician, an organized system of follow-up, reliable international normalized ratio monitoring, and good patient communication and education. Drug interactions with coumarins are a major cause of excessive anticoagulation and hence could be an important determinant of bleeding in patients on OAT. An analysis conducted in Toscana in 2005 found 31,221 patients persistently on OAT. During the same period, potential drug-drug interactions were detected in 11,778 of these patients (37.7%). Thus, the regional government enacted a specific law for the organization of OAT management to give all patients a minimal standard of quality of OAT. A specific educational campaign was promoted with the slogan "Written is better." Three possible models to follow individual patients were identified in relation to available resources and geographic characteristics of the living area: Anticoagulation Clinic (AC), General Practitioner (GP), or combined AC and GP management. This experience, although obtained in a limited geographic area, could help improve the efficacy and safety of OAT management. PMID:19787561

  19. Pioneering experiments on atomic-beam-assisted generation of drag currents in the Globus-M spherical tokamak

    NASA Astrophysics Data System (ADS)

    Shchegolev, P. B.; Bakharev, N. N.; Gusev, V. K.; Kurskiev, G. S.; Minaev, V. B.; Patrov, M. I.; Petrov, Yu. V.; Sakharov, N. V.

    2015-09-01

    Research data for drag currents in the Globus-M spherical tokamak are presented. The currents are generated by injecting atomic beams of hydrogen and deuterium. Experiments were carried out in the hydrogen and deuterium plasma of the tokamak. It has a divertor configuration with a lower X-point, a displacement along the larger radius from-1.0 to-2.5 cm, and a toroidal field of 0.4 T at a plasma current of 0.17-0.23 MA. The beam is injected into the tokamak in the equatorial plane tangentially to the magnetic axis of the plasma filament with an impact diameter of 32 cm. To provide a 28-keV 0.5-MW atomic beam with geometrical sizes of 4 × 20 cm (at a power level of 1/ e), an IPM-2 ion source is used. The generation of noninductive currents is detected from a rise in the loop current and a simultaneous dip of the loop voltage. The injection of the hydrogen and deuterium atomic beams into the deuterium plasma results in a noticeable and reproducible dip of the loop voltage (up to 0.5 V). Using the ASTRA transport code, a model is constructed that allows rapid calculation of noninductive currents. Calculations performed for a specific discharge confirm that the model adequately describes the effect of drag current generation.

  20. Experiences of General Practitioners and Practice Assistants during the Influenza A(H1N1) Pandemic in the Netherlands: A Cross-Sectional Survey

    PubMed Central

    van Dijk, Christel E.; Hooiveld, Mariette; Jentink, Anne; Isken, Leslie D.; Timen, Aura; Yzermans, C. Joris

    2015-01-01

    Objectives Since few pandemics have occurred since the Spanish influenza pandemic, we should learn from every (mild) pandemic that occurs. The objective of this study was to report on general practitioners’ and practice assistants’ acceptance of the chosen national policy, and experiences in the Netherlands during the influenza A(H1N1)pdm09 pandemic. Methods Data on experience and acceptance of the chosen national policy were obtained by structured questionnaires for general practitioners (n = 372) and practice assistants (n = 503) in April 2010. Results The primary policy chosen for general practice was not always accepted and complied with by general practitioners, although the communication (of changes) and collaboration with involved organisations were rated as positive. In particular, the advised personal protective measures were difficult to implement in daily work and thus not executed by 44% of general practitioners. Half of the general practitioners were not satisfied with the patient information provided by the government. The influenza A(H1N1) pandemic highly impacted on general practitioners’ and practice assistants’ workloads, which was not always deemed to be adequately compensated. Discussion Involvement of general practitioners in future infectious disease outbreaks is essential. This study addresses issues in the pandemic policy which might be critical in a more severe pandemic. PMID:26313147

  1. “Being Flexible and Creative”: A Qualitative Study on Maternity Care Assistants' Experiences with Non-Western Immigrant Women

    PubMed Central

    Boerleider, Agatha W.; Francke, Anneke L.; van de Reep, Merle; Manniën, Judith; Wiegers, Therese A.; Devillé, Walter L. J. M.

    2014-01-01

    Background Several studies conducted in developed countries have explored postnatal care professionals' experiences with non-western women. These studies reported different cultural practices, lack of knowledge of the maternity care system, communication difficulties, and the important role of the baby's grandmother as care-giver in the postnatal period. However, not much attention has been paid in existing literature to postnatal care professionals' approaches to these issues. Our main objective was to gain insight into how Dutch postnatal care providers - ‘maternity care assistants’ (MCA) - address issues encountered when providing care for non-western women. Methods A generic qualitative research approach was used. Two researchers interviewed fifteen MCAs individually, analysing the interview material separately and then comparing and discussing their results. Analytical codes were organised into main themes and subthemes. Results MCAs perceive caring for non-western women as interesting and challenging, but sometimes difficult too. To guarantee the health and safety of mother and baby, they have adopted flexible and creative approaches to address issues concerning traditional practices, socioeconomic status and communication. Furthermore, they employ several other strategies to establish relationships with non-western clients and their families, improve women's knowledge of the maternity care system and give health education. Conclusion Provision of postnatal care to non-western clients may require special skills and measures. The quality of care for non-western clients might be improved by including these skills in education and retraining programmes for postnatal care providers on top of factual knowledge about traditional practices. PMID:24622576

  2. Livelihood Experiences and Adherence to HIV Antiretroviral Therapy among Participants in a Food Assistance Pilot in Bolivia: A Qualitative Study

    PubMed Central

    Palar, Kartika; Martin, Alexis; Oropeza Camacho, Martha Lidia; Derose, Kathryn Pitkin

    2013-01-01

    Introduction Health and development organizations increasingly promote livelihood interventions to improve health and economic outcomes for people living with HIV (PLHIV) receiving treatment with antiretroviral therapy (ART). In-depth understanding about how PLHIV make labor decisions in the context of treatment for HIV – and treatment decisions in the context of their livelihoods – is essential to guiding intervention design and developing hypotheses for future research on livelihoods and ART. However, few studies have explored the perspectives of PLHIV regarding integration of livelihoods and ART in urban, resource-limited settings. Methods Qualitative interviews explored the livelihood experiences of food insecure ART patients in four Bolivian cities (n = 211). Topics included work-related barriers to ART adherence, HIV-related barriers to work, and economic coping mechanisms. Themes were identified using content coding procedures, with two coders to maximize reliability. Results Participants reported complex economic lives often characterized by multiple economic activities, including both formal and informal labor. They struggled to manage ART treatment and livelihoods simultaneously, and faced a range of interpersonal and structural barriers. In particular, lack of HIV status disclosure, stigma, and discrimination were highly salient issues for study participants and likely to be unique to people with HIV, leading to conflict around requesting time off for clinic visits, resentment from co-workers about time off, and difficulties adhering to medication schedules. In addition, health system issues such as limited clinic hours or drug shortages exacerbated the struggle to balance economic activities with HIV treatment adherence. Conclusions Improved policy-level efforts to enforce existing anti-discrimination laws, reduce HIV-related stigma, and expand health services accessibility could mitigate many of the barriers discussed by our participants

  3. 10 CFR 603.1330 - Supplies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 4 2012-01-01 2012-01-01 false Supplies. 603.1330 Section 603.1330 Energy DEPARTMENT OF ENERGY (CONTINUED) ASSISTANCE REGULATIONS TECHNOLOGY INVESTMENT AGREEMENTS Definitions of Terms Used in... a useful life of less than one year or an acquisition cost of less than $5,000 per unit....

  4. Assistive Technology

    MedlinePlus

    ... Page Resize Text Printer Friendly Online Chat Assistive Technology Assistive technology (AT) is any service or tool that helps ... be difficult or impossible. For older adults, such technology may be a walker to improve mobility or ...

  5. Assisted Living

    MedlinePlus

    ... but they don't need full-time nursing care. Some assisted living facilities are part of retirement ... change. Assisted living costs less than nursing home care. It is still fairly expensive. Older people or ...

  6. Virtual Reality Lab Assistant

    NASA Technical Reports Server (NTRS)

    Saha, Hrishikesh; Palmer, Timothy A.

    1996-01-01

    Virtual Reality Lab Assistant (VRLA) demonstration model is aligned for engineering and material science experiments to be performed by undergraduate and graduate students in the course as a pre-lab simulation experience. This will help students to get a preview of how to use the lab equipment and run experiments without using the lab hardware/software equipment. The quality of the time available for laboratory experiments can be significantly improved through the use of virtual reality technology.

  7. Assistive Technologies

    ERIC Educational Resources Information Center

    Auat Cheein, Fernando A., Ed.

    2012-01-01

    This book offers the reader new achievements within the Assistive Technology field made by worldwide experts, covering aspects such as assistive technology focused on teaching and education, mobility, communication and social interactivity, among others. Each chapter included in this book covers one particular aspect of Assistive Technology that…

  8. HIRFL-CSR power supply system

    NASA Astrophysics Data System (ADS)

    Gao, Daqing; Zhou, Zhongzu; Chen, Youxin; Wu, Rong; Shangguan, Jingbin; Bai, Zhen

    2001-12-01

    There are more than 200 power supplies will be employed in CSR power supply system. These power supplies provide DC and pulsed exciting current for all magnets in main ring (CSRm), experiment ring (CSRe), injection line of CSRm and RIB line. Six small-scale prototypes have been designed and made before formal manufacture. One thyristor rectifier pulsed converter was delivered to Lanzhou in January and all measurement has been finished in April. The result is satisfied.

  9. 44 CFR 206.6 - Donation or loan of Federal equipment and supplies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Donation or loan of Federal equipment and supplies. 206.6 Section 206.6 Emergency Management and Assistance FEDERAL EMERGENCY MANAGEMENT AGENCY, DEPARTMENT OF HOMELAND SECURITY DISASTER ASSISTANCE FEDERAL DISASTER ASSISTANCE General §...

  10. Feedstock Supply System Logistics

    SciTech Connect

    2006-06-01

    Feedstock supply is a significant cost component in the production of biobased fuels, products, and power. The uncertainty of the biomass feedstock supply chain and associated risks are major barriers to procuring capital funding for start-up biorefineries.

  11. Ecological assessments of activities of daily living and personal experiences with Mobus, an assistive technology for cognition: a pilot study in schizophrenia.

    PubMed

    Sablier, Juliette; Stip, Emmanuel; Jacquet, Pierre; Giroux, Sylvain; Pigot, Helene; Franck, Nicolas

    2012-01-01

    Mobus is a cognitive orthotic designed for people with difficulties managing Activities of Daily Living (ADL), as encountered in schizophrenia. It provides a schedule manager as well as the possibility to report occurrences of symptomatic experiences. Receiving this information by Internet, caregivers can assist the patient rehabilitation process. Our aim was to explore the use and satisfaction of Mobus by people with schizophrenia. Nine outpatients tested Mobus for 6 weeks. Indicators of cognitive functioning and autonomy were measured with the CAmbridge Neuropsychological Tests Automated Battery (CANTAB) and the Independant Living Skills Scale (ILSS). On average, 42.6% of the planned ADL were validated and more than 1 symptom per week were reported. Mainly because of technical breakdown, more than 50% of the outpatients evaluated the Mobus satisfaction below 1.7/5, nevertheless 3 participants appreciated it greatly. Some enhancements were found on subscales of CANTAB and ILSS and some participants reported that they acquired planning skills by using Mobus. To ensure ease of use, refinements are needed from rehabilitation and technical approaches, especially to personalize the device. Discussions on ethical and methodological issues lead to an improved version of Mobus that will be tested with a larger sample size. PMID:22876729

  12. Transition from multiple port to single port video-assisted thoracoscopic anatomic pulmonary resection: early experience and comparison of perioperative outcomes

    PubMed Central

    French, Daniel G.; Thompson, Calvin

    2016-01-01

    Background Single port thoracoscopy is an approach aimed at minimizing trauma to the chest wall during lung resection. The objectives of this study were to describe early experience in the transition from multiple port video-assisted thoracic surgery (VATS) to single port surgery (S-VATS) and to compare perioperative outcomes between approaches. Methods Consecutive anatomic lung resections using S-VATS were reviewed and compared to a historical, prospective cohort of multiple port VATS cases. Outcomes analysis was focused on the use of operating room resources and postoperative recovery. Results Over 12 months, 50 S-VATS procedures were completed by one surgeon and compared to an equal number of VATS patients. The groups were similar in age, gender, BMI, comorbidity, tumor size and pulmonary function. There was no statistically significant difference in operative time. All tumors were completely resected (R0) and the median number of lymph nodes evaluated pathologically was equivalent {S-VATS=7 [4-10]; VATS=7 [4-10]; P=0.92}. There was no significant difference in conversion rate {S-VATS=2 (4%); VATS=1 (2%); P=0.56}. The median length of stay was similar in both groups {S-VATS=4 [3-7]; VATS=4 [3-7]; P=0.99}. There was no mortality and no significant difference in the rate of major complications {S-VATS=10/50 [20%]; VATS=5/50 [10%]; P=0.26}. There was no difference in patient reported pain as measured by a visual analog scale at 24 hours {S-VATS=4 [2-5]; VATS=4 [3-5]; P=0.63}. Conclusions Early experience in the transition from multiple port VATS to S-VATS lung resection indicates that safety, efficiency and surgical quality are preserved. More long-term data are required. Alternative approaches to perform thoracoscopic lung resection should be carefully evaluated and compared to established minimally invasive techniques. PMID:27134834

  13. Silicone/graphite coating for on-target desalting and improved peptide mapping performance of matrix-assisted laser desorption/ionization-mass spectrometry targets in proteomic experiments.

    PubMed

    Li, Xinping; Wilm, Matthias; Franz, Thomas

    2005-04-01

    In two-dimensional gel electrophoresis-based proteomic experiments matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS) peptide mass fingerprinting is often the technique of choice in identifying proteins. Here, we present a novel surface coating technique for MALDI-MS targets that improves manual and automatic sample analysis. A mixture of silicone and graphite is spread in the form of a thin layer over the target. Due to the hydrophobicity of the coating, aqueous solutions can be applied to relatively small spots very precisely using a robotic system. At least four times more liquid can be concentrated on the same area compared to uncoated steel targets. alpha-cyano-4-hydrocinnamic acid crystallizes in form of very small crystals evenly distributed over the surface. The search for "hot spots" during the analysis is not necessary, which supports the automatic acquisition of data. The homogeneous crystal layer can be very effectively washed on-target without encountering major sample losses. This efficient washing and the focused application of aqueous samples replace expensive and time-consuming reversed phase micro column based sample clean-ups. When analyzing peptide mixtures, the signal intensities are up to five times higher than with preparations of the same un-desalted samples on steel targets, since four times more sample can be loaded. The mass resolution remains unaffected by the surface coating. After usage the coating can be removed, followed by a new coating avoiding any carry-over of sample to the next analysis. All these properties make the precoating of MALDI-MS targets with a silicone/graphite layer an ideal technique for routine analysis in large-scale proteomic experiments. PMID:15838907

  14. Robotic-assisted laparoscopic hysterectomy for women with endometrial cancer - complications, women´s experiences, quality of life and a health economic evaluation.

    PubMed

    Herling, Suzanne Forsyth

    2016-07-01

    This thesis contains four studies all focusing on women with endometrial cancer undergoing robotic-assisted laparoscopic hysterectomy (RALH). Women with endometrial cancer are typically elderly with co-morbidities. RALH is a relatively new treatment option which has been introduced and adopted over the last decade without randomised controlled trials (RCTs) to prove superiority over other surgical alternatives. The purpose of the thesis was to explore and describe patient and health economic outcomes of RALH for women with endometrial cancer using different research approaches. The first study was a retrospective descriptive cohort study with 235 women. The aim was to explore types and incidence of post-operative complications within 12 months after RALH reported with the Clavien-Dindo scale. We found that 6% had severe complications and that women with lymphadenectomy did not have an increased rate of complications. Urinary tract and port site infections were the most frequent complications. The second study was a qualitative interview study where we explored the experience of undergoing RALH. Using content analysis, we analysed semi-structured interviews with 12 women who had undergone RALH on average 12 weeks earlier. The women were positive towards the robotic approach and felt recovered shortly after. They expressed uncertainty with the normal course of bleeding and bowel movement post-operatively as well as with the new anatomy. The third study was an economic evaluation; an activity-based costing study including 360 women comparing total abdominal hysterectomy (TAH) to RALH. This study showed that for women with endometrial cancer, RALH was cheaper compared to TAH, mainly due to fewer complications and shorter length of stay (LOS) that counterbalanced the higher robotic expenses. When including all cost drivers the analysis showed that the RALH procedure was more than 9.000 Danish kroner (DKK) cheaper than the TAH. Increased age and Type 2 diabetes appeared

  15. Environmental Factors Influencing the Structural Dynamics of Soil Microbial Communities During Assisted Phytostabilization of Acid-Generating Mine Tailings: a Mesocosm Experiment

    PubMed Central

    Valentín-Vargas, Alexis; Root, Robert A.; Neilson, Julia W; Chorover, Jon; Maier, Raina M.

    2014-01-01

    Compost-assisted phytostabilization has recently emerged as a robust alternative for reclamation of metalliferous mine tailings. Previous studies suggest that root-associated microbes may be important for facilitating plant establishment on the tailings, yet little is known about the long-term dynamics of microbial communities during reclamation. A mechanistic understanding of microbial community dynamics in tailings ecosystems undergoing remediation is critical because these dynamics profoundly influence both the biogeochemical weathering of tailings and the sustainability of a plant cover. Here we monitor the dynamics of soil microbial communities (i.e. bacteria, fungi, archaea) during a 12-month mesocosm study that included 4 treatments: 2 unplanted controls (unamended and compost-amended tailings) and 2 compost-amended seeded tailings treatments. Bacterial, fungal and archaeal communities responded distinctively to the revegetation process and concurrent changes in environmental conditions and pore water chemistry. Compost addition significantly increased microbial diversity and had an immediate and relatively long-lasting buffering-effect on pH, allowing plants to germinate and thrive during the early stages of the experiment. However, the compost buffering capacity diminished after six months and acidification took over as the major factor affecting plant survival and microbial community structure. Immediate changes in bacterial communities were observed following plant establishment, whereas fungal communities showed a delayed response that apparently correlated with the pH decline. Fluctuations in cobalt pore water concentrations, in particular, had a significant effect on the structure of all three microbial groups, which may be linked to the role of cobalt in metal detoxification pathways. The present study represents, to our knowledge, the first documentation of the dynamics of the three major microbial groups during revegetation of compost

  16. A single institution experience using the LigaSure vessel sealing system in video-assisted thoracoscopic surgery for primary spontaneous pneumothorax

    PubMed Central

    Li, Zhi; Chen, Liang; Wang, Jun; Qin, Jianwei; Zhu, Quan; Zhang, Bin; Chen, Yijiang

    2014-01-01

    Abstract This study sought to report our 6-year experience with the LigaSure vessel sealing system (LVSS) in video-assisted thoracoscopic surgery (VATS) for primary spontaneous pneumothorax. A series of 180 consecutive patients with primary spontaneous pneumothorax were operated on in our institution from May 2005 to December 2010. Intraoperatively, large lesions (bullae or blebs) with a diameter more than 2 cm were resected by staplers, and the residual lesions were treated by LVSS. LVSS was also used to ablate the apical area when no lesions were found. Conventional apical pleural abrasion was done in all cases. All patients were successfully treated using VATS with minimal perioperative bleeding. The mean operating time was 76 minutes (range, 43–160 minutes) for single-side procedures and 169 minutes (range, 135–195 minutes) for bilateral procedures, the mean number of applied staples was 1.93 per patient (range, 0–8 days), the duration of drainage was 3.8 days (range, 2–15 days), and the duration of hospital stay was 5.8 days (range, 3–16 days). Postoperative complications included persistent air leak (> 5 days) in 11 cases (6.1%) and residual pneumothorax in 6 (3.3%). None required reoperation. The mean duration of follow-up was 57 months (range, 24–105 months). Recurrence was seen in three cases (1.7%), and all underwent another operation thereafter. None of the lesions in the relapse cases received ablation with LVSS in the first operation. LVSS can optimize VATS for primary spontaneous pneumothorax and reduces the use of single-use staples. The method is safe, easy to use, and cost-effective and produces satisfactory results. PMID:25469119

  17. Supply Current Diagnosis in VLSI

    NASA Technical Reports Server (NTRS)

    Frenzel, J. F.; Marinos, P. N.

    1990-01-01

    This paper presents a technique based upon the power supply current signature (cd) which allows for the testing of mixed-signal systems, in situ. Through experiments with a microprocessor, the cd is shown to contain important information concerning the operational status of the system which may be easily extracted using approaches based on statistical signal detection theory. The fault-detection performance of these techniques is compared to that achieved through auto-regressive modeling of the cd.

  18. Assisted Living

    MedlinePlus

    ... it, too. Back to top What is the Cost for Assisted Living? Although assisted living costs less than nursing home care, it is still ... of services an older person chooses, the price costs can range from less than $25,000 a ...

  19. Switching power supply filter

    NASA Technical Reports Server (NTRS)

    Kumar, Prithvi R. (Inventor); Abare, Wayne (Inventor)

    1989-01-01

    A filter for a switching power supply. The filter includes a common mode inductor with coil configurations allowing differential mode current from a dc source to pass through but attenuating common mode noise from the power supply so that the noise does not reach the dc source. The invention also includes the use of feed through capacitors at the switching power supply input terminals to provide further high-frequency noise attenuation.

  20. Penumatic-power supply

    NASA Technical Reports Server (NTRS)

    Kramer, R. C.

    1981-01-01

    Portable compressed air supply has two or more outputs at pressures from 20 to 100 psi. Applications include operating production equipment, spraying paint and lubricants, and pressurizing refrigeration systems. Supply filters air from standard high-pressure line, reduces it to working pressure, and adds lubricant when required. Regulator supplies low-pressure air to output channels. On channel lines, vernier-control valves select output pressures.

  1. INTERGRATING SOURCE WATER PROTECTION AND DRINKING WATER TREATMENT: U.S. ENVIRONMENTAL PROTECTION AGENCY'S WATER SUPPLY AND WATER RESOURCES DIVISION

    EPA Science Inventory

    The U.S. Environmental Protection Agency's (EPA) Water Supply and Water Resources Division (WSWRD) is an internationally recognized water research organization established to assist in responding to public health concerns related to drinking water supplies. WSWRD has evolved from...

  2. INTEGRATING SOURCE WATER PROTECTION AND DRINKING WATER TREATMENT: U.S. ENVIRONMENTAL PROTECTION AGENCY'S WATER SUPPLY AND WATER RESOURCES DIVISION

    EPA Science Inventory

    The U.S. Environmental Protection Agency's (EPA) Water Supply and Water Resources Division (WSWRD) is an internationally recognized water research organization established to assist in responding to public health concerns related to drinking water supplies. WSWRD has evolved from...

  3. Initial experience of single-port video-assisted thoracoscopic surgery sleeve lobectomy and systematic mediastinal lymphadenectomy for non-small-cell lung cancer

    PubMed Central

    Chen, Hao; Xu, Guobing; Zheng, Bin; Zheng, Wei; Zhu, Yong; Guo, Zhaohui

    2016-01-01

    Background In this study, we evaluate the feasibility and safety of single-port video-assisted thoracoscopic surgery (VATS) sleeve lobectomy (SL) and systematic mediastinal lymphadenectomy and summarize our surgical experience. Methods From October 2014 to December 2015, eight cases of single-port VATS SL [seven male patients and one female patient, median age 56.0 (range, 38–63) years] were performed by a single group of surgeons in Fujian Medical University Fujian Union Hospital. The median tumor size was 2.7 cm. Types of resection included four right upper, one right lower, and three left upper sleeve lobectomies. Systematic mediastinal lymphadenectomy was performed in all patients. A modified anastomosis technique developed by the author (Chen’s technique) was applied for bronchial anastomosis. Postoperative outcome and short-term follow-up data were recorded and analyzed. Results All eight operations were completed uneventfully with no conversion to thoracotomy or reoperation required. No perioperative death was observed. Major results (medians or percentages) were as follows: operative duration, 234.5 [185–345] min; bronchial anastomosis duration, 38.0 [30–43] min; blood loss, 65.0 [50–200] mL; number of lymph node dissected, 22.5 [18–37]. The postoperative complication rate was 37.5% (three of eight cases, including two pulmonary infections and one atrial fibrillation). All patients recovered and were discharged uneventfully with symptomatic therapy. Pathology showed squamous cell carcinoma in seven patients and adenocarcinoma in one patient; two patients were in TNM stage IB, three in stage IIA, one in stage IIB, and two in stage IIIA. The mean follow-up was 7.5 [2–15] months. There were no tumor recurrences or bronchial anastomotic complications. Conclusions Single-port VATS SL and mediastinal lymphadenectomy are safe and feasible. Improvements in operating procedures can help facilitate single-port VATS. The application of Chen’s technique

  4. Assisted Living

    MedlinePlus

    ... meals, medication management or assistance, bathing, dressing and transportation. Some residents may have memory disorders including Alzheimer's, ... served in a common dining area Housekeeping services Transportation 24-hour security Exercise and wellness programs Personal ...

  5. Financial Assistance

    MedlinePlus

    Health care can be costly. If you have health insurance, it usually pays at least part of your medical costs. If you don't have insurance or need help with costs that aren't covered, financial assistance ...

  6. Assisted Living

    MedlinePlus

    ... a resident's needs depends as much on the philosophy and services of the assisted living facility as ... the facility provide a written statement of its philosophy of care? Visit each facility more than once, ...

  7. Assisted Living

    MedlinePlus

    ... are part of retirement communities. Others are near nursing homes, so a person can move easily if needs change. Assisted living costs less than nursing home care. It is still fairly expensive. Older people ...

  8. Assisted Living

    MedlinePlus

    ... Recreational activities Security Transportation How to Choose a Facility A good match between a facility and a resident's needs depends as much on the philosophy and services of the assisted living facility as it does on the quality of care. ...

  9. Rapid Scaling Up of Insecticide-Treated Bed Net Coverage in Africa and Its Relationship with Development Assistance for Health: A Systematic Synthesis of Supply, Distribution, and Household Survey Data

    PubMed Central

    Flaxman, Abraham D.; Fullman, Nancy; Otten, Mac W.; Menon, Manoj; Cibulskis, Richard E.; Ng, Marie; Murray, Christopher J. L.; Lim, Stephen S.

    2010-01-01

    Background Development assistance for health (DAH) targeted at malaria has risen exponentially over the last 10 years, with a large fraction of these resources directed toward the distribution of insecticide-treated bed nets (ITNs). Identifying countries that have been successful in scaling up ITN coverage and understanding the role of DAH is critical for making progress in countries where coverage remains low. Sparse and inconsistent sources of data have prevented robust estimates of the coverage of ITNs over time. Methods and Principal Findings We combined data from manufacturer reports of ITN deliveries to countries, National Malaria Control Program (NMCP) reports of ITNs distributed to health facilities and operational partners, and household survey data using Bayesian inference on a deterministic compartmental model of ITN distribution. For 44 countries in Africa, we calculated (1) ITN ownership coverage, defined as the proportion of households that own at least one ITN, and (2) ITN use in children under 5 coverage, defined as the proportion of children under the age of 5 years who slept under an ITN. Using regression, we examined the relationship between cumulative DAH targeted at malaria between 2000 and 2008 and the change in national-level ITN coverage over the same time period. In 1999, assuming that all ITNs are owned and used in populations at risk of malaria, mean coverage of ITN ownership and use in children under 5 among populations at risk of malaria were 2.2% and 1.5%, respectively, and were uniformly low across all 44 countries. In 2003, coverage of ITN ownership and use in children under 5 was 5.1% (95% uncertainty interval 4.6% to 5.7%) and 3.7% (2.9% to 4.9%); in 2006 it was 17.5% (16.4% to 18.8%) and 12.9% (10.8% to 15.4%); and by 2008 it was 32.8% (31.4% to 34.4%) and 26.6% (22.3% to 30.9%), respectively. In 2008, four countries had ITN ownership coverage of 80% or greater; six countries were between 60% and 80%; nine countries were between

  10. Spatial Data Supply Chains

    NASA Astrophysics Data System (ADS)

    Varadharajulu, P.; Azeem Saqiq, M.; Yu, F.; McMeekin, D. A.; West, G.; Arnold, L.; Moncrieff, S.

    2015-06-01

    This paper describes current research into the supply of spatial data to the end user in as close to real time as possible via the World Wide Web. The Spatial Data Infrastructure paradigm has been discussed since the early 1990s. The concept has evolved significantly since then but has almost always examined data from the perspective of the supplier. It has been a supplier driven focus rather than a user driven focus. The current research being conducted is making a paradigm shift and looking at the supply of spatial data as a supply chain, similar to a manufacturing supply chain in which users play a significant part. A comprehensive consultation process took place within Australia and New Zealand incorporating a large number of stakeholders. Three research projects that have arisen from this consultation process are examining Spatial Data Supply Chains within Australia and New Zealand and are discussed within this paper.

  11. Power supply conditioning circuit

    NASA Technical Reports Server (NTRS)

    Primas, L. E.; Loveland, R.

    1987-01-01

    A power supply conditioning circuit that can reduce Periodic and Random Deviations (PARD) on the output voltages of dc power supplies to -150 dBV from dc to several KHz with no measurable periodic deviations is described. The PARD for a typical commercial low noise power supply is -74 dBV for frequencies above 20 Hz and is often much worse at frequencies below 20 Hz. The power supply conditioning circuit described here relies on the large differences in the dynamic impedances of a constant current diode and a zener diode to establish a dc voltage with low PARD. Power supplies with low PARD are especially important in circuitry involving ultrastable frequencies for the Deep Space Network.

  12. Assisted Ventilation.

    PubMed

    Dries, David J

    2016-01-01

    Controlled Mechanical Ventilation may be essential in the setting of severe respiratory failure but consequences to the patient including increased use of sedation and neuromuscular blockade may contribute to delirium, atelectasis, and diaphragm dysfunction. Assisted ventilation allows spontaneous breathing activity to restore physiological displacement of the diaphragm and recruit better perfused lung regions. Pressure Support Ventilation is the most frequently used mode of assisted mechanical ventilation. However, this mode continues to provide a monotonous pattern of support for respiration which is normally a dynamic process. Noisy Pressure Support Ventilation where tidal volume is varied randomly by the ventilator may improve ventilation and perfusion matching but the degree of support is still determined by the ventilator. Two more recent modes of ventilation, Proportional Assist Ventilation and Neurally Adjusted Ventilatory Assist (NAVA), allow patient determination of the pattern and depth of ventilation. Proposed advantages of Proportional Assist Ventilation and NAVA include decrease in patient ventilator asynchrony and improved adaptation of ventilator support to changing patient demand. Work of breathing can be normalized with these modes as well. To date, however, a clear pattern of clinical benefit has not been demonstrated. Existing challenges for both of the newer assist modes include monitoring patients with dynamic hyperinflation (auto-positive end expiratory pressure), obstructive lung disease, and air leaks in the ventilator system. NAVA is dependent on consistent transduction of diaphragm activity by an electrode system placed in the esophagus. Longevity of effective support with this technique is unclear. PMID:25501776

  13. Task Analysis for Health Occupations. Cluster: Dental Assisting. Occupation: Dental Assistant. Education for Employment Task Lists.

    ERIC Educational Resources Information Center

    Lathrop, Janice

    This document contains a task analysis for health occupations (dental assistant) in the dental assisting cluster. For each task listed, occupation, duty area, performance standard, steps, knowledge, attitudes, safety, equipment/supplies, source of analysis, and Illinois state goals for learning are listed. For the duty area of "providing…

  14. Automating power supply checkout

    SciTech Connect

    Laster, J.; Bruno, D.; D'Ottavio, T.; Drozd, J.; Marr, G.; Mi, C.

    2011-03-28

    Power Supply checkout is a necessary, pre-beam, time-critical function. At odds are the desire to decrease the amount of time to perform the checkout while at the same time maximizing the number and types of checks that can be performed and analyzing the results quickly (in case any problems exist that must be addressed). Controls and Power Supply Group personnel have worked together to develop tools to accomplish these goals. Power Supply checkouts are now accomplished in a time-frame of hours rather than days, reducing the number of person-hours needed to accomplish the checkout and making the system available more quickly for beam development. The goal of the Collider-Accelerator Department (CAD) at Brookhaven National Laboratory is to provide experimenters with collisions of heavy-ions and polarized protons. The Relativistic Heavy-Ion Collider (RHIC) magnets are controlled by 100's of varying types of power supplies. There is a concentrated effort to perform routine maintenance on the supplies during shutdown periods. There is an effort at RHIC to streamline the time needed for system checkout in order to quickly arrive at a period of beam operations for RHIC. This time-critical period is when the checkout of the power supplies is performed as the RHIC ring becomes cold and the supplies are connected to their physical magnets. The checkout process is used to identify problems in voltage and current regulation by examining data signals related to each for problems in settling and regulation (ripple).

  15. 44 CFR 208.37 - Reimbursement for equipment and supply costs incurred during Activation.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Reimbursement for equipment and supply costs incurred during Activation. 208.37 Section 208.37 Emergency Management and Assistance FEDERAL EMERGENCY MANAGEMENT AGENCY, DEPARTMENT OF HOMELAND SECURITY DISASTER ASSISTANCE NATIONAL...

  16. CONCEPTUAL DESIGN STUDY OF HORN POWER SUPPLY.

    SciTech Connect

    ZHANG,W.; SANDBERG,J.; WENG,W.T.

    2003-06-16

    A 250 kA pulsed power supply is required for the focusing horn of the proposed Brookhaven AGS Super Neutrino Beam Facility for long baseline neutrino oscillation experiment. It is expected to pulse at 2.5 Hz repetition rate. A preliminary study is being conducted to explore the key issues associated with the power supply system design. Advanced technologies used in similar systems as well as new ideas are being examined, simulated and evaluated. This power supply will be a very high stored energy, high average power, and high peak power system.

  17. Spacecraft high-voltage power supply construction

    NASA Technical Reports Server (NTRS)

    Sutton, J. F.; Stern, J. E.

    1975-01-01

    The design techniques, circuit components, fabrication techniques, and past experience used in successful high-voltage power supplies for spacecraft flight systems are described. A discussion of the basic physics of electrical discharges in gases is included and a design rationale for the prevention of electrical discharges is provided. Also included are typical examples of proven spacecraft high-voltage power supplies with typical specifications for design, fabrication, and testing.

  18. Analysis of Phospholipid Mixtures from Biological Tissues by Matrix-Assisted Laser Desorption and Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS): A Laboratory Experiment

    ERIC Educational Resources Information Center

    Eibisch, Mandy; Fuchs, Beate; Schiller, Jurgen; Sub, Rosmarie; Teuber, Kristin

    2011-01-01

    Matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI-TOF MS) is increasingly used to investigate the phospholipid (PL) compositions of tissues and body fluids, often without previous separation of the total mixture into the individual PL classes. Therefore, the questions of whether all PL classes are detectable…

  19. Project Outreach: An Assessment of Tribal Attitudes and Appraisal of the Extent of Tribal Council Experience in Administering Federal Assistance Programs, 1970.

    ERIC Educational Resources Information Center

    National Council on Indian Opportunity, Washington, DC.

    Project Outreach conducted a survey to assist the National Council on Indian Opportunity (NCIO) in fulfilling its obligations of coordination, appraisal, and innovation of various Federal programs affecting the Indian community. The report covers 49 reservations and Indian groups and is a synthesis of the original responses provided by Indian…

  20. A Collective Pursuit of Learning the Possibility to Be: The CAMP Experience Assisting Situationally Marginalized Mexican American Students to a Successful Student Identity

    ERIC Educational Resources Information Center

    Reyes, Reynaldo, III

    2007-01-01

    Many students of Mexican descent must learn how to be successful students. This study describes 5 students of Mexican descent from situationally marginalized lives who were a part of a support and retention scholarship program (College Assistance Migrant Program--CAMP). These case studies document how they perceived their learning and how they…

  1. Lifting BLS Power Supplies

    SciTech Connect

    Sarychev, Michael

    2007-08-01

    This note describes BLS power supplies lifting techniques and provides stress calculations for lifting plate and handles bolts. BLS power supply weight is about 120 Lbs, with the center of gravity shifted toward the right front side. A lifting plate is used to attach a power supply to a crane or a hoist. Stress calculations show that safety factors for lifting plate are 12.9 (vs. 5 required) for ultimate stress and 5.7 (vs. 3 required) for yield stress. Safety factor for shackle bolt thread shear load is 37, and safety factor for bolts that attach handles is 12.8.

  2. Supply and Demand

    MedlinePlus

    ... a good breastfeeding rhythm with your baby. In reality, the efficient supply-and-demand rhythm of normal ... is one reason it’s a good idea to alternate which breast you use to begin nursing. A ...

  3. Supply options. [hydrogen market

    NASA Technical Reports Server (NTRS)

    1975-01-01

    The use of captive hydrogen (produced and consumed on site) and merchant hydrogen (externally supplied) is considered. A low-merchant-captive ratio market and a high-merchant-captive ratio market are described and compared.

  4. Cleaning supplies and equipment

    MedlinePlus

    ... on any object the person touched or on equipment that was used during their care. Some germs ... why it is important to disinfect supplies and equipment. To disinfect something means to clean it to ...

  5. Hearing Assistive Technology

    MedlinePlus

    ... for the Public / Hearing and Balance Hearing Assistive Technology Hearing Assistive Technology: FM Systems | Infrared Systems | Induction ... Assistive Technology Systems Solutions What are hearing assistive technology systems (HATS)? Hearing assistive technology systems (HATS) are ...

  6. Design of low-thrust gravity-assist trajectories for cycler missions to Mars and for non-Newtonian physics experiments

    NASA Astrophysics Data System (ADS)

    Chen, Kuan-Hua

    We design and optimize low-thrust gravity-assist trajectories for several applications. For Earth-Mars cycling trajectories, we approach the problem by designing a low-thrust version of the well-known Aldrin cycler, and by "patching" together a series of ballistic semi-cyclers. These new cycler trajectories allow significant savings in terms of taxi rendezvous propellant expenditure over the original (nearly ballistic) Aldrin cycler and the semi-cyclers. Trade studies show that even though the propellant requirement on the low-thrust cycling vehicle is not insignificant, the overall architecture-level propellant cost savings is worthwhile. For the investigation of new physics, we design low-thrust trajectories that employ Jupiter gravity assists to reach a distance of 1000 AU from the Sun. Trajectories that allow close flybys of the Sun are also presented. In addition, we analyze the unexpected gamma-ray detection readings from the MESSENGER spacecraft, and the results may suggest interactions between spacecraft-Sun distance and radioactive decay rates. Besides these new trajectories for various applications, we also present a new design tool for low-thrust gravity-assist trajectories. This new design technique relies on an extension of the Tisser and graph, which tracks the changes in orbital shapes and energies from gravity assist maneuvers. Several simple low-thrust control schemes and their corresponding Tisserand graph curves are investigated and used to bridge gaps on the ballistic Tisserand graph (which could only be used for ballistic trajectories in its original formulation). We use the new low-thrust Tisserand graph to generate candidate (both direct and multi-flyby) rendezvous trajectories and show that the new tool can predict the mass-optimized DeltaV cost to within 15% in most cases.

  7. Dental Assistant.

    ERIC Educational Resources Information Center

    Michigan State Univ., East Lansing. Coll. of Agriculture and Natural Resources Education Inst.

    This curriculum guide, developed for use in dental assistant education programs in Michigan, describes a task-based curriculum that can help a teacher to develop a classroom management system where students learn by doing. It is based on task analysis and reflects the skills, knowledge, and attitudes that employers expect entry-level dental…

  8. Petroleum supply monthly

    SciTech Connect

    1995-10-01

    The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blends, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States.

  9. Petroleum Supply Monthly

    SciTech Connect

    1996-02-01

    The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major U.S. geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.

  10. Coal supply for California

    NASA Technical Reports Server (NTRS)

    Yancik, J. J.

    1978-01-01

    The potential sources and qualities of coals available for major utility and industrial consumers in California are examined and analyzed with respect to those factors that would affect the reliability of supplies. Other considerations, such as the requirements and assurances needed by the coal producers to enter into long-term contracts and dedicate large reserves of coal to these contracts are also discussed. Present and potential future mining contraints on coal mine operators are identified and analyzed with respect to their effect on availability of supply.

  11. Can a teaching assistant experience in a surgical anatomy course influence the learning curve for nontechnical skill development for surgical residents?

    PubMed

    Heidenreich, Mark J; Musonza, Tashinga; Pawlina, Wojciech; Lachman, Nirusha

    2016-01-01

    The foundation upon which surgical residents are trained to work comprises more than just critical cognitive, clinical, and technical skill. In an environment where the synchronous application of expertise is vital to patient outcomes, the expectation for optimal functioning within a multidisciplinary team is extremely high. Studies have shown that for most residents, one of the most difficult milestones in the path to achieving professional expertise in a surgical career is overcoming the learning curve. This view point commentary provides a reflection from the two senior medical students who have participated in the Student-as-Teacher program developed by the Department of Anatomy at Mayo Clinic, designed to prepare students for their teaching assistant (TA) role in anatomy courses. Both students participated as TAs in a six week surgical anatomy course for surgical first assistant students offered by the School of Health Sciences at Mayo Clinic. Development of teaching skills, nontechnical leadership, communication, and assessment skills, are discussed in relation to their benefits in preparing senior medical students for surgical residency. PMID:26126886

  12. Sialendoscopy and sialendoscopically-assisted operations in the treatment of lithiasis of the submandibular and parotid glands: our experience of 239 cases.

    PubMed

    Kopeć, Tomasz; Wierzbicka, Małgorzata; Kałużny, Jarosław; Młodkowska, Anna; Szyfter, Witold

    2016-09-01

    We present the results of treatment of sialolithiasis of the submandibular and parotid glands using sialendoscopy and sialendoscopy-assisted surgery. Between 2009-2013, 397 consecutive patients (mean (range) age 48 (18-76) years) were treated for obstructive diseases of the major salivary glands (sialolithiasis n=239, 175 submandibular and 64 parotid). In a total of 175 patients with 191 stones in the submandibular gland treated by endoscopic retrieval or surgical release, 149 patients (85%) were rendered free of stones (by sialendoscopy alone n=82, and sialendoscopy with operation n=67) Twenty patients (11%) had residual stones and 6 patients (4%) required excisionof the gland. Sixty-four patients had 71 stones removed from the parotid gland by endoscopic retrieval or surgical release and 43 (67%) were free of stones (by sialendoscopy alone n=25, and sialendoscopy with operation n=18). Twenty patients (31%) had residual stones and one (2%) required removal of the gland. In the group of patients whose stones were removed endoscopically, the effectiveness of sialendoscopy was 87% and 85%, respectively. We confirm that sialendoscopy and sialendoscopy-assisted removal is the current treatment of choice for stones in the submandibular and parotid glands. The indications for excision of the gland are becoming less common as first-line treatment, although it is still indispensable in some cases. PMID:27185233

  13. First experience using cultured epidermal autografts in Taiwan for burn victims of the Formosa Fun Coast Water Park explosion, as part of Japanese medical assistance.

    PubMed

    Matsumura, Hajime; Harunari, Nobuyuki; Ikeda, Hiroto

    2016-05-01

    On June 27, 2015, a flammable starch-based powder exploded at Formosa Fun Coast in Taipei, Taiwan, injuring 499 people, and more than 200 people were in critical condition with severe burns. Although a cultured epidermal autograft (CEA) was not approved or used in clinical practice, the Taiwan Food and Drug Administration requested a Japanese CEA manufacturer to donate CEA for the burn victims as part of international medical assistance. The authors cooperated in this project and participated in the patient selection, wound bed management for CEA, and technical assistance for CEA use. Here, we provide an overview of the project. Nine patients were enrolled, and two patients were excluded from the skin biopsy; seven skin biopsies were collected approximately 1 month after the disaster. The average TBSA% burned was 81.0%, and the mean age was 20.1 years. CEA was grafted in five patients; wound closure had been obtained in one patient, and one patient was severely ill at the time of grafting. The CEA was combined with a wide split auto mesh graft or patch graft. The mean re-epithelization rate at 4 weeks after the grafting was 84.2% by patient, and all of the patients survived. Although this project had many obstacles to overcome, CEA grafting was successful and contributed to wound closure and survival. PMID:26818956

  14. Supply-Chain Optimization Template

    NASA Technical Reports Server (NTRS)

    Quiett, William F.; Sealing, Scott L.

    2009-01-01

    The Supply-Chain Optimization Template (SCOT) is an instructional guide for identifying, evaluating, and optimizing (including re-engineering) aerospace- oriented supply chains. The SCOT was derived from the Supply Chain Council s Supply-Chain Operations Reference (SCC SCOR) Model, which is more generic and more oriented toward achieving a competitive advantage in business.

  15. Ethics of Information Supply.

    ERIC Educational Resources Information Center

    Oppenheim, Charles

    This discussion of the ethics of the information process provides a brief review of the process of information supply and flow, primarily in science and technology; looks at various points in the flow of information; and highlights particular ethical concerns. Facets of the process discussed in more detail include ways in which some scientists…

  16. Exploration Supply Chain Simulation

    NASA Technical Reports Server (NTRS)

    2008-01-01

    The Exploration Supply Chain Simulation project was chartered by the NASA Exploration Systems Mission Directorate to develop a software tool, with proper data, to quantitatively analyze supply chains for future program planning. This tool is a discrete-event simulation that uses the basic supply chain concepts of planning, sourcing, making, delivering, and returning. This supply chain perspective is combined with other discrete or continuous simulation factors. Discrete resource events (such as launch or delivery reviews) are represented as organizational functional units. Continuous resources (such as civil service or contractor program functions) are defined as enabling functional units. Concepts of fixed and variable costs are included in the model to allow the discrete events to interact with cost calculations. The definition file is intrinsic to the model, but a blank start can be initiated at any time. The current definition file is an Orion Ares I crew launch vehicle. Parameters stretch from Kennedy Space Center across and into other program entities (Michaud Assembly Facility, Aliant Techsystems, Stennis Space Center, Johnson Space Center, etc.) though these will only gain detail as the file continues to evolve. The Orion Ares I file definition in the tool continues to evolve, and analysis from this tool is expected in 2008. This is the first application of such business-driven modeling to a NASA/government-- aerospace contractor endeavor.

  17. Lightweight Regulated Power Supply

    NASA Technical Reports Server (NTRS)

    Mclyman, C. W.

    1985-01-01

    Power-supply circuit regulates output voltage by adjusting frequency of chopper circuit according to variations. Currently installed in battery charger for electric wheelchair, circuit is well suited to other uses in which light weight is important - for example, in portable computers, radios, and test instruments.

  18. Teleconnected food supply shocks

    NASA Astrophysics Data System (ADS)

    Bren d'Amour, Christopher; Wenz, Leonie; Kalkuhl, Matthias; Steckel, Jan Christoph; Creutzig, Felix

    2016-03-01

    The 2008-2010 food crisis might have been a harbinger of fundamental climate-induced food crises with geopolitical implications. Heat-wave-induced yield losses in Russia and resulting export restrictions led to increases in market prices for wheat across the Middle East, likely contributing to the Arab Spring. With ongoing climate change, temperatures and temperature variability will rise, leading to higher uncertainty in yields for major nutritional crops. Here we investigate which countries are most vulnerable to teleconnected supply-shocks, i.e. where diets strongly rely on the import of wheat, maize, or rice, and where a large share of the population is living in poverty. We find that the Middle East is most sensitive to teleconnected supply shocks in wheat, Central America to supply shocks in maize, and Western Africa to supply shocks in rice. Weighing with poverty levels, Sub-Saharan Africa is most affected. Altogether, a simultaneous 10% reduction in exports of wheat, rice, and maize would reduce caloric intake of 55 million people living in poverty by about 5%. Export bans in major producing regions would put up to 200 million people below the poverty line at risk, 90% of which live in Sub-Saharan Africa. Our results suggest that a region-specific combination of national increases in agricultural productivity and diversification of trade partners and diets can effectively decrease future food security risks.

  19. Teleconnected food supply shocks

    NASA Astrophysics Data System (ADS)

    Bren d’Amour, Christopher; Wenz, Leonie; Kalkuhl, Matthias; Steckel, Jan Christoph; Creutzig, Felix

    2016-03-01

    The 2008–2010 food crisis might have been a harbinger of fundamental climate-induced food crises with geopolitical implications. Heat-wave-induced yield losses in Russia and resulting export restrictions led to increases in market prices for wheat across the Middle East, likely contributing to the Arab Spring. With ongoing climate change, temperatures and temperature variability will rise, leading to higher uncertainty in yields for major nutritional crops. Here we investigate which countries are most vulnerable to teleconnected supply-shocks, i.e. where diets strongly rely on the import of wheat, maize, or rice, and where a large share of the population is living in poverty. We find that the Middle East is most sensitive to teleconnected supply shocks in wheat, Central America to supply shocks in maize, and Western Africa to supply shocks in rice. Weighing with poverty levels, Sub-Saharan Africa is most affected. Altogether, a simultaneous 10% reduction in exports of wheat, rice, and maize would reduce caloric intake of 55 million people living in poverty by about 5%. Export bans in major producing regions would put up to 200 million people below the poverty line at risk, 90% of which live in Sub-Saharan Africa. Our results suggest that a region-specific combination of national increases in agricultural productivity and diversification of trade partners and diets can effectively decrease future food security risks.

  20. APS power supply controls

    SciTech Connect

    Saunders, C.W.; Despe, O.D.

    1994-03-31

    The purpose of this document is to provide comprehensive coverage of the APS power supply control design. This includes application software, embedded controller software, networks, and hardware. The basic components will be introduced first, followed by the requirements driving the overall design. Subsequent sections will address each component of the design one by one. Latter sections will address specific applications.

  1. Power Supplies for Precooler Ring

    SciTech Connect

    Fuja, Raymond; Praeg, Walter

    1980-12-12

    Eight power supplies will energize the antiproton Precooler ring. there will be two series connected supplies per quadrant. These supplies will power 32 dipole and 19 quadrupole magnets. The resistance and inductance per quadrant is R = 1.4045 Ohms and L = 0.466. Each powr supply will have 12-phase series bridge rectifiers and will be energized from the 480 V 3-phase grid. The total of eight power supplies are numbered IA, IIA, IIIA, IVA, and IB, IIB, IIIB, and IVB. Each quadrant will contain one A and one B supply. A block diagram of the Precooler ring with its power supplies is shown in Figure 1.

  2. Activities in water supply and sanitation.

    PubMed

    1997-01-01

    The Economic and Social Council for Asia and the Pacific (ESCAP) held a regional workshop in Thailand in 1992 to demonstrate how women's involvement at all levels of environmentally sound and sustainable water supply and sanitation programs and projects could be made more effective, easier, and productive. Using the same modules, with the support of other organizations such as the Department of Development Support and Management Services, ESCAP conducted four more workshops in the Philippines, Lao People's Democratic Republic (PDR), Vietnam, and Thailand in 1995. In the Philippines, the National Commission on the Role of Filipino Women expressed its intention to adapt the modules for the country. In the Lao PDR, three project ideas were proposed which would assist the Lao Women Union in gaining knowledge on the planning, implementation, operation, and management of water supply and sanitation projects at the national, regional and project levels. In Vietnam, three main directions for action were identified for the promotion of close and active cooperation between the Rural Water Supply and Environmental Sanitation Centres and the system of the Women Union of Vietnam. In Thailand, the National Committee on Health and Environment of the National Commission on Women's Affairs expressed its willingness to seek budgetary allocation for the promotion of women's role in water supply and sanitation. PMID:12157800

  3. Career Paths of Female Elementary Assistant Principals

    ERIC Educational Resources Information Center

    Baier, Hope C.

    2013-01-01

    The purpose of this research was to explore the worklife experiences and personal issues of female elementary assistant principals and examine the influence of these factors on their intent to remain in their position or leave. The worklife experiences and perceptions of female elementary assistant principals were categorized as institutional or…

  4. Sample Computer Assisted Instruction Student Interactions.

    ERIC Educational Resources Information Center

    Hall, Keith A.; And Others

    To convey to those who have had no experience with computer-assisted instruction an impression of the experience that students have in a CAI course, this report presents in print the sequence of instruction that one student received from one chapter of the course, Computer Assisted Remedial Education (CARE 1): Introduction to the Education of…

  5. Left Ventricular Assist Devices

    PubMed Central

    2004-01-01

    Executive Summary Objective The objective of this health technology policy assessment was to determine the effectiveness and cost-effectiveness of using implantable ventricular assist devices in the treatment of end-stage heart failure. Heart Failure Heart failure is a complex syndrome that impairs the ability of the heart to maintain adequate blood circulation, resulting in multiorgan abnormalities and, eventually, death. In the period of 1994 to 1997, 38,702 individuals in Ontario had a first hospital admission for heart failure. Despite reported improvement in survival, the five-year mortality rate for heart failure is about 50%. For patients with end-stage heart failure that does not respond to medical therapy, surgical treatment or traditional circulatory assist devices, heart transplantation (in appropriate patients) is the only treatment that provides significant patient benefit. Heart Transplant in Ontario With a shortage in the supply of donor hearts, patients are waiting longer for a heart transplant and may die before a donor heart is available. From 1999 to 2003, 55 to 74 people received a heart transplant in Ontario each year. Another 12 to 21 people died while waiting for a suitable donor heart. Of these, 1 to 5 deaths occurred in people under 18 years old. The rate-limiting factor in heart transplant is the supply of donor hearts. Without an increase in available donor hearts, attempts at prolonging the life of some patients on the transplant wait list could have a harmful effect on other patients that are being pushed down the waiting list (knock on effect). LVAD Technology Ventricular assist devices [VADs] have been developed to provide circulatory assistance to patients with end-stage heart failure. These are small pumps that usually assist the damaged left ventricle [LVADs] and may be situated within the body (intracorporeal] or outside the body [extracorporeal). Some of these devices were designed for use in the right ventricle [RVAD] or both

  6. Medical treatment at Louis Armstrong New Orleans International Airport after hurricane Katrina: the experience of disaster medical assistance teams WA-1 and OR-2.

    PubMed

    Sanford, Christopher; Jui, Jonathan; Miller, Helen C; Jobe, Kathleen A

    2007-07-01

    In the week following Hurricane Katrina, over 3000 patients were evacuated by air from a triage and medical treatment station at the Louis Armstrong New Orleans International Airport. This represents the largest air evacuation in history. Over 24,000 additional evacuees were transported from the airport to shelters. Disaster Medical Assistance Teams (DMATs) from several US states were deployed to the Louis Armstrong New Orleans International Airport to provide medical care to those evacuated from New Orleans. Despite warning from the US National Weather Service of catastrophic damage to New Orleans, adequate medical staffing was not attained at the airport triage station until 6 days after the hurricane struck. Organizational lapses, including inadequate medical and operational planning, understaffing of medical personnel, and failure to utilize Incident Command System, diminished the effectiveness of the Hurricane Katrina New Orleans Medical Operation. PMID:17574144

  7. Accommodation Assisting Glasses for Presbyopia

    NASA Astrophysics Data System (ADS)

    Fujita, Toyomi; Idesawa, Masanori

    2002-10-01

    We have considered the important functions for developing accommodation-assistance glasses which can assist eye focusing for aged person with presbyopia.We focused on keys to realize small and lightweight variable focusing lens and gaze distance detection. We devised new variable focusing lenses with control and gaze distance detection with a tunnel light path device. A prototype of glasses with devised elements was manufactured experimentally. From the result of trial use of them and experiments for evaluating characteristics,it was confirmed that proposed technologies were useful for realization of accommodation-assistance glasses.

  8. Language Experience

    ERIC Educational Resources Information Center

    Bugh, Marylou

    1978-01-01

    When a child uses his words and his ideas in learning to read, he also assists in the normal integration of his personality. Starting with a method of language experience developed by Sylvia Ashton-Warner, the author, a reading consultant, describes a language experience-reading program which utilizes the student's own curiosity and interests. (RK)

  9. 24 CFR 3280.704 - Fuel supply systems.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 5 2011-04-01 2011-04-01 false Fuel supply systems. 3280.704 Section 3280.704 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR HOUSING-FEDERAL HOUSING COMMISSIONER, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT MANUFACTURED...

  10. 24 CFR 3285.605 - Fuel supply system.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Fuel supply system. 3285.605 Section 3285.605 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR HOUSING-FEDERAL HOUSING COMMISSIONER, DEPARTMENT OF HOUSING...

  11. Agricultural Supplies and Services. Program Planning Guide: Volume 2.

    ERIC Educational Resources Information Center

    Welton, Richard; Marks, Michael

    The program planning guide for agricultural supplies and services was written to assist Applied Biological and Agricultural Occupations (ABAO) teachers in enriching existing programs and/or to provide the basis for expansion of offerings to include additional materials for the cluster areas of agricultural chemicals, feeds, seeds, fertilizers, and…

  12. COURSE OUTLINE FOR AGRICULTURAL SUPPLY - SALES AND SERVICE OCCUPATIONS.

    ERIC Educational Resources Information Center

    BECKER, WILLIAM; LINTNER, J.H.

    TITLES OF MODULES, PURPOSES, TIME AND SUPPORTING EDUCATIONAL REQUIREMENTS, AND OPERATIONAL DETAILS OF A COURSE ARE GIVEN IN THIS PUBLICATION DESIGNED TO ASSIST STATE AND LOCAL VOCATIONAL EDUCATION LEADERS IN DEVELOPING PROGRAMS TO PREPARE HIGH SCHOOL STUDENTS FOR ENTRY AND ADVANCEMENT IN BUSINESSES WHICH SELL AGRICULTURAL SUPPLIES AND SERVICES TO…

  13. 10 CFR 603.695 - Requirements for supplies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Requirements for supplies. 603.695 Section 603.695 Energy DEPARTMENT OF ENERGY (CONTINUED) ASSISTANCE REGULATIONS TECHNOLOGY INVESTMENT AGREEMENTS Award Terms Affecting Participants' Financial, Property, and Purchasing Systems Property § 603.695 Requirements...

  14. 10 CFR 603.695 - Requirements for supplies.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 4 2011-01-01 2011-01-01 false Requirements for supplies. 603.695 Section 603.695 Energy DEPARTMENT OF ENERGY (CONTINUED) ASSISTANCE REGULATIONS TECHNOLOGY INVESTMENT AGREEMENTS Award Terms Affecting Participants' Financial, Property, and Purchasing Systems Property § 603.695 Requirements...

  15. Solar-Assisted Hemodialysis

    PubMed Central

    Agar, John W. M.; Perkins, Anthony; Tjipto, Alwie

    2012-01-01

    Summary Background and objectives Hemodialysis resource use—especially water and power, smarter processing and reuse of postdialysis waste, and improved ecosensitive building design, insulation, and space use—all need much closer attention. Regarding power, as supply diminishes and costs rise, alternative power augmentation for dialysis services becomes attractive. The first 12 months of a solar-assisted dialysis program in southeastern Australia is reported. Design, setting, participants, & measurements A 24-m2, 3-kWh rated solar array and inverter—total cost of A$16,219—has solar-assisted the dialysis-related power needs of a four-chair home hemodialysis training service. All array-created, grid-donated power and all grid-drawn power to the four hemodialysis machines and minireverse osmosis plant pairings are separately metered. After the grid-drawn and array-generated kilowatt hours have been billed and reimbursed at their respective commercial rates, financial viability, including capital repayment, can be assessed. Results From July of 2010 to July of 2011, the four combined equipment pairings used 4166.5 kWh, 9% more than the array-generated 3811.0 kWh. Power consumption at 26.7 c/kWh cost A$1145.79. Array-generated power reimbursements at 23.5 c/kWh were A$895.59. Power costs were, thus, reduced by 76.5%. As new reimbursement rates (60 c/kWh) take effect, system reimbursements will more than double, allowing both free power and potential capital pay down over 7.7 years. With expected array life of ∼30 years, free power and an income stream should accrue in the second and third operative decades. Conclusions Solar-assisted power is feasible and cost-effective. Dialysis services should assess their local solar conditions and determine whether this ecosensitive power option might suit their circumstance. PMID:22223614

  16. Graduate Assistants: Students or Staff, Policy or Practice? The Current Legal Employment Status of Graduate Assistants

    ERIC Educational Resources Information Center

    Flora, Bethany H.

    2007-01-01

    In the US, graduate assistants are an integral part of a university's educational and operational climate. Graduate assistants provide teaching, research or administrative services to the educational enterprise in exchange for professional experience and a financial stipend. Recent strikes of graduate teaching assistants at New York University…

  17. Operating procedures: Fusion Experiments Analysis Facility

    SciTech Connect

    Lerche, R.A.; Carey, R.W.

    1984-03-20

    The Fusion Experiments Analysis Facility (FEAF) is a computer facility based on a DEC VAX 11/780 computer. It became operational in late 1982. At that time two manuals were written to aid users and staff in their interactions with the facility. This manual is designed as a reference to assist the FEAF staff in carrying out their responsibilities. It is meant to supplement equipment and software manuals supplied by the vendors. Also this manual provides the FEAF staff with a set of consistent, written guidelines for the daily operation of the facility.

  18. High voltage power supply

    NASA Technical Reports Server (NTRS)

    Ruitberg, A. P.; Young, K. M. (Inventor)

    1985-01-01

    A high voltage power supply is formed by three discrete circuits energized by a battery to provide a plurality of concurrent output signals floating at a high output voltage on the order of several tens of kilovolts. In the first two circuits, the regulator stages are pulse width modulated and include adjustable ressistances for varying the duty cycles of pulse trains provided to corresponding oscillator stages while the third regulator stage includes an adjustable resistance for varying the amplitude of a steady signal provided to a third oscillator stage. In the first circuit, the oscillator, formed by a constant current drive network and a tuned resonant network included a step up transformer, is coupled to a second step up transformer which, in turn, supplies an amplified sinusoidal signal to a parallel pair of complementary poled rectifying, voltage multiplier stages to generate the high output voltage.

  19. Discontinuous Mode Power Supply

    NASA Technical Reports Server (NTRS)

    Lagadinos, John; Poulos, Ethel

    2012-01-01

    A document discusses the changes made to a standard push-pull inverter circuit to avoid saturation effects in the main inverter power supply. Typically, in a standard push-pull arrangement, the unsymmetrical primary excitation causes variations in the volt second integral of each half of the excitation cycle that could lead to the establishment of DC flux density in the magnetic core, which could eventually cause saturation of the main inverter transformer. The relocation of the filter reactor normally placed across the output of the power supply solves this problem. The filter reactor was placed in series with the primary circuit of the main inverter transformer, and is presented as impedance against the sudden changes on the input current. The reactor averaged the input current in the primary circuit, avoiding saturation of the main inverter transformer. Since the implementation of the described change, the above problem has not reoccurred, and failures in the main power transistors have been avoided.

  20. Streamlining the supply chain.

    PubMed

    Neumann, Lydon

    2003-07-01

    Effective management of the supply chain requires attention to: Product management--formulary development and maintenance, compliance, clinical involvement, standardization, and demand-matching. Sourcing and contracting--vendor consolidation, GPO portfolio management, price leveling, content management, and direct contracting Purchasing and payment-cycle--automatic placement, web enablement, centralization, evaluated receipts settlement, and invoice matching Inventory and distribution management--"unofficial" and "official" locations, vendor-managed inventory, automatic replenishment, and freight management. PMID:12866156

  1. Mobile Uninterruptible Power Supply

    NASA Technical Reports Server (NTRS)

    Mears, Robert L.

    1990-01-01

    Proposed mobile unit provides 20 kVA of uninterruptible power. Used with mobile secondary power-distribution centers to provide power to test equipment with minimal cabling, hazards, and obstacles. Wheeled close to test equipment and system being tested so only short cable connections needed. Quickly moved and set up in new location. Uninterruptible power supply intended for tests which data lost or equipment damaged during even transient power failure.

  2. 33 CFR 214.10 - Types of assistance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... distribution. (b) Procurement and distribution of bottled water. (c) Laying of temporary above ground water... DEFENSE EMERGENCY SUPPLIES OF DRINKING WATER § 214.10 Types of assistance. The temporary emergency supplies of clean drinking water may be provided through such actions as: (a) The use of water tank...

  3. 33 CFR 214.10 - Types of assistance.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... distribution. (b) Procurement and distribution of bottled water. (c) Laying of temporary above ground water... DEFENSE EMERGENCY SUPPLIES OF DRINKING WATER § 214.10 Types of assistance. The temporary emergency supplies of clean drinking water may be provided through such actions as: (a) The use of water tank...

  4. 33 CFR 214.10 - Types of assistance.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... distribution. (b) Procurement and distribution of bottled water. (c) Laying of temporary above ground water... DEFENSE EMERGENCY SUPPLIES OF DRINKING WATER § 214.10 Types of assistance. The temporary emergency supplies of clean drinking water may be provided through such actions as: (a) The use of water tank...

  5. 33 CFR 214.10 - Types of assistance.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... distribution. (b) Procurement and distribution of bottled water. (c) Laying of temporary above ground water... DEFENSE EMERGENCY SUPPLIES OF DRINKING WATER § 214.10 Types of assistance. The temporary emergency supplies of clean drinking water may be provided through such actions as: (a) The use of water tank...

  6. 33 CFR 214.10 - Types of assistance.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... distribution. (b) Procurement and distribution of bottled water. (c) Laying of temporary above ground water... DEFENSE EMERGENCY SUPPLIES OF DRINKING WATER § 214.10 Types of assistance. The temporary emergency supplies of clean drinking water may be provided through such actions as: (a) The use of water tank...

  7. 10 CFR 216.3 - Requests for assistance.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Requests for assistance. 216.3 Section 216.3 Energy DEPARTMENT OF ENERGY OIL MATERIALS ALLOCATION AND PRIORITY PERFORMANCE UNDER CONTRACTS OR ORDERS TO MAXIMIZE DOMESTIC ENERGY SUPPLIES § 216.3 Requests for assistance. (a) Persons who believe that they perform...

  8. 10 CFR 216.3 - Requests for assistance.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Requests for assistance. 216.3 Section 216.3 Energy DEPARTMENT OF ENERGY OIL MATERIALS ALLOCATION AND PRIORITY PERFORMANCE UNDER CONTRACTS OR ORDERS TO MAXIMIZE DOMESTIC ENERGY SUPPLIES § 216.3 Requests for assistance. (a) Persons who believe that they perform...

  9. 10 CFR 216.3 - Requests for assistance.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Requests for assistance. 216.3 Section 216.3 Energy DEPARTMENT OF ENERGY OIL MATERIALS ALLOCATION AND PRIORITY PERFORMANCE UNDER CONTRACTS OR ORDERS TO MAXIMIZE DOMESTIC ENERGY SUPPLIES § 216.3 Requests for assistance. (a) Persons who believe that they perform...

  10. 10 CFR 216.3 - Requests for assistance.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Requests for assistance. 216.3 Section 216.3 Energy DEPARTMENT OF ENERGY OIL MATERIALS ALLOCATION AND PRIORITY PERFORMANCE UNDER CONTRACTS OR ORDERS TO MAXIMIZE DOMESTIC ENERGY SUPPLIES § 216.3 Requests for assistance. (a) Persons who believe that they perform...

  11. The Restitution Experience in Youth Employment. A Monograph and Training Guide to Jobs Components. Restitution Education, Specialized Training and Technical Assistance Program.

    ERIC Educational Resources Information Center

    Bazemore, S. Gordon

    This document is a model curriculum for the development of employment components for juvenile restitution programs. It provides a practical discussion of the experiences of five restitution projects around the country, lists their job components, and presents an overview of the common features of successful employment components. A step-by-step…

  12. Screening Decisions for a Middle School Assistant Principalship: Effects of Principal's Sex, National Origin of Applicants, and Job Experience of Applicants

    ERIC Educational Resources Information Center

    Young, I. Phillip; Sever, Wesley Richard

    2011-01-01

    Screening decisions of female and male middle school principals were examined for applicants varying in national origin (Hispanic versus non-Hispanic) and type of job experience (direct versus indirect) for a middle school principalship. Principals' reactions were assessed according to perceived qualifications of applicants, probability of…

  13. Is Implantation of a Left Ventricular Assist Device in Patients With Critical or Impending Cardiogenic Shock an Absolute Contraindication? Looking Back at Our Past Experience Trying to Identify Contraindicative Risk Factors.

    PubMed

    Dell'Aquila, Angelo Maria; Schneider, Stefan R B; Risso, Paolo; Welp, Henryk; Glockner, David G; Alles, Sebastian; Sindermann, Jürgen R; Scherer, Mirela

    2015-12-01

    Poor survival has been demonstrated after ventricular assist device (VAD) implantation for Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) profile 1 and 2 patients compared with more stable levels. However, risk factors within this high-risk cohort have not been determined so far. The aim of the present study was to identify risk factors associated with this very high mortality rate. Between February 1993 and January 2013, 298 patients underwent VAD implantation in our institution. One hundred nine patients were in INTERMACS level 1 and 49 patients were in INTERMACS level 2 and were therefore defined as hemodynamically critical (overall 158 patients). Assist devices implanted were: HVAD HeartWare n = 18; Incor n = 11; VentrAssist n = 2; DeBakey n = 22; and pulsatile systems n = 105. After cumulative support duration of 815.35 months, Kaplan-Meier analysis revealed a survival of 63.9, 48.8, and 40.3% at 1, 6, and 12 months, respectively. Cox regression analyses identified age > 50 (P = 0.001, odds ratio [OR] 2.48), white blood cell count > 13.000/μL (P = 0.01, OR 2.06), preoperative renal replacement therapy (P = 0.001, OR 2.63), and postcardiotomy failure (P < 0.001, OR 2.79) as independent predictors of mortality. Of note, last generation VADs were not associated with significantly better 6-month survival (P = 0.59). Patients without the aforementioned risk factors could yield a survival of 79.2% at 6 months. This single-center experience shows that VAD implantation in hemodynamically unstable patients generally results in poor early outcome, even in third-generation pumps. However, avoiding the aforementioned risk factors could result in improved outcome. PMID:26011007

  14. Conducting Sanitary Surveys of Water Supply Systems. Student Workbook.

    ERIC Educational Resources Information Center

    1976

    This workbook is utilized in connection with a 40-hour course on sanitary surveys of water supply systems for biologists, chemists, and engineers with experience as a water supply evaluator. Practical training is provided in each of the 21 self-contained modules. Each module outlines the purpose, objectives and content for that section. The course…

  15. Tailoring through Technology: A Retrospective Review of a Single Surgeon's Experience with Implant-Based Breast Reconstruction before and after Implementation of Laser-Assisted Indocyanine Green Angiography.

    PubMed

    Harless, Christin A; Jacobson, Steven R

    2016-05-01

    Reported complication rates of implant-based breast reconstruction in the literature exceed 50%, with mastectomy skin flap necrosis reported to occur in up to 25% of cases. Laser-assisted indocyanine green angiography (LA-ICGA) technology allows the surgeon to optimize preservation of the mastectomy skin flap while avoiding skin necrosis. The purpose of this study was to determine if outcomes of breast reconstruction are beneficially affected by using LA-ICGA. A total 269 consecutive women (467 breast reconstructions) undergoing implant-based breast reconstruction from 2008 to 2013 were examined. The complication rates of those who underwent reconstruction prior to the implementation of LA-ICGA were compared with those who were reconstructed after implementation of LA-ICGA. A total of 254 consecutive breast reconstructions were performed prior to implementation of LA-ICGA, and 213 breasts were reconstructed with the use of LA-ICGA. After implementation of LA-ICGA System, the rate of mastectomy skin flap necrosis decreased by 86% (6.7% versus 0.9%, p = 0.02). The overall complication rate prior to LA-ICGA was 13.8% compared with 6.6% with the use of LA-ICGA (p = 0.01). After LA-ICGA was incorporated, the percentage of patients undergoing single-stage reconstruction increased from 12% to 32% (p = <0.001). Implementation of LA-ICGA provides the surgeon with an objective assessment of mastectomy flap perfusion resulting in a trend toward overall reduction in complications as well as an 86% decrease in the rate of subsequent skin necrosis. The objective assessment of mastectomy flap perfusion allows the surgeon to tailor breast reconstruction intraoperatively, in real-time, adjusting for the individual patient's mastectomy flap perfusion. PMID:26899399

  16. Concerns of Disaster Medical Assistance Team (DMAT) members about troubles at the nuclear power plant: experience from the Niigata Chuetsu-Oki earthquake, 16 July 2007, in Japan.

    PubMed

    Akashi, Makoto; Kumagaya, Ken; Kondo, Hisayoshi; Hirose, Yasuo

    2010-06-01

    An earthquake measuring 6.8 on the Richter scale struck the Niigata-Chuetsu region of Japan at 10:13 on 16 July 2007. The earthquake was followed by the sustained occurrence of numerous aftershocks, delaying the reconstruction of community lifelines. The earthquake affected the Kashiwazaki-Kariwa nuclear power plants (NPPs), the biggest NPP site in the world. The earthquake caused damage to NPPs, resulting in a small amount of radioactive materials being released into the air and the sea. However, no significant effects were detected in the public and the environment. As medical response to this earthquake, 42 Disaster Medical Assistance Teams (DMATs) were sent to hospitals and first-aid care centers at the NPP site. In order to evaluate the perceptions of the deployed DMAT personnel regarding concerns about the health effects of radiation and information about the damage to NPPs, questionnaires were sent to 40 facilities that dispatched DMATs to the earthquake area. Most of them were concerned with the effects of radiation, and adequate information about the problems at the NPPs was not communicated to them. This preliminary study suggests that communication of information is extremely important for DMAT members in the case of disasters, in particular if there exists a possibility of radiation exposure, since radiation cannot be detected by our senses. DMAT members are critical to any mass casualty incident, whether caused by humans or nature. We have learned from this earthquake that there is urgent need for an all-hazards approach, including a "combined disaster" strategy, which should be emphasized for current disaster planning and response. This is the first report on DMATs deployed to an earthquake site with damage to NPPs. PMID:20445385

  17. Factors predicting prolonged operative time for individual surgical steps of robot-assisted radical prostatectomy (RARP): A single surgeon’s experience

    PubMed Central

    Alenizi, Abdullah M.; Valdivieso, Roger; Rajih, Emad; Meskawi, Malek; Toarta, Cristian; Bienz, Marc; Azizi, Mounsif; Hueber, Pierre Alain; Lavigueur-Blouin, Hugo; Trudeau, Vincent; Trinh, Quoc-Dien; El-Hakim, Assaad; Zorn, Kevin C.

    2015-01-01

    Introduction: We evaluated the average time required to complete individual steps of robotic-assisted radical prostatectomy (RARP) by an expert RARP surgeon. The intent is to help establish a time-based benchmark to aim for during apprenticeship. In addition, we aimed to evaluate preoperative patient factors, which could prolong the operative time of these individual steps. Methods: We retrospectively identified 247 patients who underwent RARP, performed by an experienced robotic surgeon at our institution. Baseline patient characteristics and the duration of each step were recorded. Multivariate analysis was performed to predict factors of prolonged individual steps. Results: In multivariable analysis, obesity was a significant predictor of prolonged operative time of: docking (odds ratio [OR] 1.96), urethral division (OR 3.13), and vesico-urethral anastomosis (VUA) (OR 2.63). Prostate volume was also a significant predictor of longer operative time in dorsal vein complex ligation (OR 1.02), bladder neck division (OR 1.03), pedicle control (OR 1.04), urethral division (OR 1.02), and VUA (OR 1.03). A prolonged bladder neck division was predicted by the presence of a median lobe (OR 5.03). Only obesity (OR 2.56) and prostate volume (OR 1.04) were predictors of a longer overall operative time. Conclusions: Obesity and prostate volume are powerful predictors of longer overall operative time. Furthermore, both can predict prolonged time of several individual RARP steps. The presence of a median lobe is a strong predictor of a longer bladder neck division. These factors should be taken into consideration during RARP training. PMID:26279709

  18. Dental Education and Supply of Dentists: Policy Issues of the Eighties.

    ERIC Educational Resources Information Center

    Hebbeler, Evangeline L.

    Recent trends in dental education and the supply of dentists for the South are examined to assist state policymakers and school officials. The supply of dentists has increased faster than the population over the past decade and will continue to increase through 1990; in the south the rate of growth exceeded the national rate. At the same time, the…

  19. 33 CFR 203.61 - Emergency water supplies due to contaminated water source.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Water Act (see 40 CFR 141), is exceeded. (ii) The water supply has been identified as a source of... contaminated water source. 203.61 Section 203.61 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT... PROCEDURES Emergency Water Supplies: Contaminated Water Sources and Drought Assistance § 203.61...

  20. PETROLEUM AND PETROLEUM PRODUCTS SALES AND SERVICE. AGRICULTURAL SUPPLY - SALES AND SERVICE OCCUPATIONS, MODULE NUMBER 11.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. Center for Vocational and Technical Education.

    THE PURPOSE OF THIS GUIDE IS TO ASSIST TEACHERS IN PREPARING HIGH SCHOOL AND POST-HIGH SCHOOL STUDENTS FOR ENTRY AND ADVANCEMENT IN THE PETROLEUM PHASE OF AGRICULTURAL SUPPLY OCCUPATIONS. ONE OF A SERIES FOR AGRICULTURAL SUPPLY OCCUPATIONS, THIS MODULE WAS DEVELOPED BY A NATIONAL TASK FORCE ON THE BASIS OF DATA FROM STATE STUDIES. SECTIONS ARE (1)…

  1. Water Supply. Fire Service Certification Series. Unit FSCS-FF-9-80.

    ERIC Educational Resources Information Center

    Pribyl, Paul F.

    This training unit on water supply is part of a 17-unit course package written to aid instructors in the development, teaching, and evaluation of fire fighters in the Wisconsin Fire Service Certification Series. The purpose stated for the 4-hour unit is to assist the firefighter in the proper use of water supplies and the understanding of the…

  2. 44 CFR 208.38 - Reimbursement for re-supply and logistics costs incurred during Activation.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 44 Emergency Management and Assistance 1 2011-10-01 2011-10-01 false Reimbursement for re-supply... URBAN SEARCH AND RESCUE RESPONSE SYSTEM Response Cooperative Agreements § 208.38 Reimbursement for re... this subpart, DHS will not reimburse costs incurred for re-supply and logistical support...

  3. 44 CFR 208.38 - Reimbursement for re-supply and logistics costs incurred during Activation.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Reimbursement for re-supply and logistics costs incurred during Activation. 208.38 Section 208.38 Emergency Management and...-supply and logistics costs incurred during Activation. With the exception of emergency...

  4. Power-Supply-Conditioning Circuit

    NASA Technical Reports Server (NTRS)

    Primas, L. E.; Loveland, R. C.

    1989-01-01

    Fluctuations of voltage suppressed in power supplies for precise radio-frequency circuits. Circuit suppresses both periodic and random deviations of dc supply voltage from desired steady level. Highly-stable feedback voltage regulator, conditioner intended in conjunction with conventional power-supply circuit to provide constant voltage to atomic frequency standard or other precise oscillator. Without conditioners, outputs of most commercial power supplies contain fluctuations causing unacceptably-large phase and amplitude modulation of precise oscillators.

  5. IDATEN and G-SITENNO: GUI-assisted software for coherent X-ray diffraction imaging experiments and data analyses at SACLA.

    PubMed

    Sekiguchi, Yuki; Yamamoto, Masaki; Oroguchi, Tomotaka; Takayama, Yuki; Suzuki, Shigeyuki; Nakasako, Masayoshi

    2014-11-01

    Using our custom-made diffraction apparatus KOTOBUKI-1 and two multiport CCD detectors, cryogenic coherent X-ray diffraction imaging experiments have been undertaken at the SPring-8 Angstrom Compact free electron LAser (SACLA) facility. To efficiently perform experiments and data processing, two software suites with user-friendly graphical user interfaces have been developed. The first is a program suite named IDATEN, which was developed to easily conduct four procedures during experiments: aligning KOTOBUKI-1, loading a flash-cooled sample into the cryogenic goniometer stage inside the vacuum chamber of KOTOBUKI-1, adjusting the sample position with respect to the X-ray beam using a pair of telescopes, and collecting diffraction data by raster scanning the sample with X-ray pulses. Named G-SITENNO, the other suite is an automated version of the original SITENNO suite, which was designed for processing diffraction data. These user-friendly software suites are now indispensable for collecting a large number of diffraction patterns and for processing the diffraction patterns immediately after collecting data within a limited beam time. PMID:25343809

  6. Karst show caves - how DTN technology as used in space assists automatic environmental monitoring and tourist protection - experiment in Postojna cave

    NASA Astrophysics Data System (ADS)

    Gabrovšek, F.; Grašič, B.; Božnar, M. Z.; Mlakar, P.; Udén, M.; Davies, E.

    2013-10-01

    The paper presents an experiment demonstrating a novel and successful application of Delay- and Disruption-Tolerant Networking (DTN) technology for automatic data transfer in a karst cave Early Warning and Measuring System. The experiment took place inside the Postojna Cave in Slovenia, which is open to tourists. Several automatic meteorological measuring stations are set up inside the cave, as an adjunct to the surveillance infrastructure; the regular data transfer provided by the DTN technology allows the surveillance system to take on the role of an Early Warning System (EWS). One of the stations is set up alongside the railway tracks, which allows the tourist to travel inside the cave by train. The experiment was carried out by placing a DTN "data mule" (a DTN-enabled computer with WiFi connection) on the train and by upgrading the meteorological station with a DTN-enabled WiFi transmission system. When the data mule is in the wireless drive-by mode, it collects measurement data from the station over a period of several seconds as the train passes the stationary equipment, and delivers data at the final train station by the cave entrance. This paper describes an overview of the experimental equipment and organisation allowing the use of a DTN system for data collection and an EWS inside karst caves where there is a regular traffic of tourists and researchers.

  7. Karst show caves - how DTN technology as used in space assists automatic environmental monitoring and tourist protection - experiment in Postojna Cave

    NASA Astrophysics Data System (ADS)

    Gabrovšek, F.; Grašič, B.; Božnar, M. Z.; Mlakar, P.; Udén, M.; Davies, E.

    2014-02-01

    The paper presents an experiment demonstrating a novel and successful application of delay- and disruption-tolerant networking (DTN) technology for automatic data transfer in a karst cave early warning and measuring system. The experiment took place inside the Postojna Cave in Slovenia, which is open to tourists. Several automatic meteorological measuring stations are set up inside the cave, as an adjunct to the surveillance infrastructure; the regular data transfer provided by the DTN technology allows the surveillance system to take on the role of an early warning system (EWS). One of the stations is set up alongside the railway tracks, which allows the tourist to travel inside the cave by train. The experiment was carried out by placing a DTN "data mule" (a DTN-enabled computer with WiFi connection) on the train and by upgrading the meteorological station with a DTN-enabled WiFi transmission system. When the data mule is in the wireless drive-by mode, it collects measurement data from the station over a period of several seconds as the train without stopping passes the stationary equipment, and delivers data at the final train station by the cave entrance. This paper describes an overview of the experimental equipment and organization allowing the use of a DTN system for data collection and an EWS inside karst caves where there is regular traffic of tourists and researchers.

  8. M-ARIANE (Mirror-assisted Active Readout In A Neutron Environment): an x-ray imaging system for implosion experiments on the National Ignition Facility at ignition neutron yields

    NASA Astrophysics Data System (ADS)

    Smalyuk, V. A.; Ayers, J.; Bell, P. M.; Benedetti, L. R.; Bradley, D. K.; Cerjan, C.; Emig, J.; Felker, B.; Glenn, S. M.; Hagmann, C.; Holder, J.; Izumi, N.; Kilkenny, J. D.; Koch, J. A.; Landen, O. L.; Moody, J.; Piston, K.; Simanovskaia, N.; Walton, C.

    2013-09-01

    X-ray imaging diagnostics instruments will operate in a harsh ionizing radiation background environment during ignition experiments at the National Ignition Facility (NIF). This background consists of mostly neutrons and gamma rays produced by inelastic scattering of neutrons. An imaging system, M-ARIANE (Mirror-assisted Active Readout In A Neutron Environment), based on an x-ray framing camera with film, has been designed to operate in such a harsh neutron-induced background environment. Multilayer x-ray mirrors and a shielding enclosure are the key components of this imaging system which is designed to operate at ignition neutron yields of ~1e18 on NIF. Modeling of the neutronand gamma-induced backgrounds along with the signal and noise of the x-ray imaging system is presented that display the effectiveness of this design.

  9. Experiments in Magnetohydrodynamics

    ERIC Educational Resources Information Center

    Rayner, J. P.

    1970-01-01

    Describes three student experiments in magnetohydrodynamics (MHD). In these experiments, it was found that the electrical conductivity of the local water supply was sufficient to demonstrate effectively some of the features of MHD flowmeters, generators, and pumps. (LC)

  10. 7 CFR 1710.202 - Requirement to prepare a load forecast-power supply borrowers.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... and provide an approved load forecast in support of any request for RUS financial assistance. The... provide an approved load forecast in support of any request for RUS financial assistance. The member power... forecasting information in the approved load forecast of its power supply borrower. The approved...

  11. Future natural gas supplies

    NASA Astrophysics Data System (ADS)

    Despite recent optimism about the outlook for the future supply of domestic conventional natural gas, the Congressional Office of Technology Assessment (OTA) finds insufficient evidence to clearly justify either an optimistic or a pessimistic view. In a technical memorandum entitled “U.S. Natural Gas Availability: Conventional Gas Supply Through the Year 2000,” released recently by Rep. Philip R. Sharp (D-Ind,), chairman of the Subcommittee on Fossil and Synthetic Fuels of the Committee on Energy and Commerce, OTA concluded that substantial technical uncertainties prevented a reliable estimation of the likely natural gas production rates for later in this century. Even ignoring the potential for significant changes in gas prices and technology, OTA estimated that conventional gas production by the lower 48 states in the year 2000 could range from 9 to 19 trillion cubic feet (TCF) (0.25 to 0.53 trillion cubic meters), compared to 1982 production of 17.5 TCF. Similarly, production in the year 1990 could range from 13 to 20 TCF.

  12. Non-inductive current start-up assisted by energetic electrons in Q-shu University experiment with steady-state spherical tokamak

    SciTech Connect

    Ishiguro, Masaki; Liu Haiqing; Tashima, Saya; Hanada, Kazuaki; Zushi, Hideki; Nakamura, Kazuo; Fujisawa, Akihide; Idei, Hiroshi; Nagashima, Yoshihiko; Hasegawa, Makoto; Kawasaki, Shoji; Nakashima, Hisatoshi; Higashijima, Aki; Takase, Yuichi; Kishimoto, Yasuaki; Mitarai, Osamu

    2012-06-15

    After intensive discharge cleaning of the chamber wall, non-inductive current start-up experiments have been successfully performed in QUEST in moderate vertical fields of about 1.0-1.5 mT with positive n-index. Simultaneously, with increasing plasma current, an asymmetric toroidal flow of energetic electrons was observed and direct measurements of current driven by this asymmetric flow were taken with a newly developed Langmuir probe technique. A numerical study of the energetic electron orbits indicates that the total current is enough to play a dominant role in the formation of a closed flux surface in QUEST.

  13. Microwave-assisted synthesis of organics and nanomaterials

    EPA Science Inventory

    Microwave-assisted chemistry techniques and greener reaction media are dramatically reducing chemical waste and reaction times in several organic transformations and material synthesis. This presentation summarizes author’s own experience in developing MW-assisted chemical proces...

  14. Long-term ELBARA-II Assistance to SMOS Land Product and Algorithm Validation at the Valencia Anchor Station (MELBEX Experiment 2010-2013)

    NASA Astrophysics Data System (ADS)

    Lopez-Baeza, Ernesto; Wigneron, Jean-Pierre; Schwank, Mike; Miernecki, Maciej; Kerr, Yann; Casal, Tania; Delwart, Steven; Fernandez-Moran, Roberto; Mecklenburg, Susanne; Coll Pajaron, M. Amparo; Salgado Hernanz, Paula

    The main activity of the Valencia Anchor Station (VAS) is currently now to support the validation of SMOS (Soil Moisture and Ocean Salinity) Level 2 and 3 land products (soil moisture, SM, and vegetation optical depth, TAU). With this aim, the European Space Agency (ESA) has provided the Climatology from Satellites Group of the University of Valencia with an ELBARA-II microwave radiometer under a loan agreement since September 2009. During this time, brightness temperatures (TB) have continuously been acquired, except during normal maintenance or minor repair interruptions. ELBARA-II is an L-band dual-polarization radiometer with two channels (1400-1418 MHz, 1409-1427 MHz). It is continuously measuring over a vineyard field (El Renegado, Caudete de las Fuentes, Valencia) from a 15 m platform with a constant protocol for calibration and angular scanning measurements with the aim to assisting the validation of SMOS land products and the calibration of the L-MEB (L-Band Emission of the Biosphere) -basis for the SMOS Level 2 Land Processor- over the VAS validation site. One of the advantages of using the VAS site is the possibility of studying two different environmental conditions along the year. While the vine cycle extends mainly between April and October, during the rest of the year the area remains under bare soil conditions, adequate for the calibration of the soil model. The measurement protocol currently running has shown to be robust during the whole operation time and will be extended in time as much as possible to continue providing a long-term data set of ELBARA-II TB measurements and retrieved SM and TAU. This data set is also showing to be useful in support of SMOS scientific activities: the VAS area and, specifically the ELBARA-II site, offer good conditions to control the long-term evolution of SMOS Level 2 and Level 3 land products and interpret eventual anomalies that may obscure sensor hidden biases. In addition, SM and TAU that are currently

  15. NNSA TRITIUM SUPPLY CHAIN

    SciTech Connect

    Wyrick, Steven; Cordaro, Joseph; Founds, Nanette; Chambellan, Curtis

    2013-08-21

    Savannah River Site plays a critical role in the Tritium Production Supply Chain for the National Nuclear Security Administration (NNSA). The entire process includes: • Production of Tritium Producing Burnable Absorber Rods (TPBARs) at the Westinghouse WesDyne Nuclear Fuels Plant in Columbia, South Carolina • Production of unobligated Low Enriched Uranium (LEU) at the United States Enrichment Corporation (USEC) in Portsmouth, Ohio • Irradiation of TPBARs with the LEU at the Tennessee Valley Authority (TVA) Watts Bar Reactor • Extraction of tritium from the irradiated TPBARs at the Tritium Extraction Facility (TEF) at Savannah River Site • Processing the tritium at the Savannah River Site, which includes removal of nonhydrogen species and separation of the hydrogen isotopes of protium, deuterium and tritium.

  16. Switching power supply

    DOEpatents

    Mihalka, A.M.

    1984-06-05

    The invention is a repratable capacitor charging, switching power supply. A ferrite transformer steps up a dc input. The transformer primary is in a full bridge configuration utilizing power MOSFETs as the bridge switches. The transformer secondary is fed into a high voltage, full wave rectifier whose output is connected directly to the energy storage capacitor. The transformer is designed to provide adequate leakage inductance to limit capacitor current. The MOSFETs are switched to the variable frequency from 20 to 50 kHz to charge a capacitor from 0.6 kV. The peak current in a transformer primary and secondary is controlled by increasing the pulse width as the capacitor charges. A digital ripple counter counts pulses and after a preselected desired number is reached an up-counter is clocked.

  17. Sustainable Biomass Supply Systems

    SciTech Connect

    Erin Searcy; Dave Muth; Erin Wilkerson; Shahab Sokansanj; Bryan Jenkins; Peter Titman; Nathan Parker; Quinn Hart; Richard Nelson

    2009-04-01

    The U.S. Department of Energy (DOE) aims to displace 30% of the 2004 gasoline use (60 billion gal/yr) with biofuels by 2030 as outlined in the Energy Independence and Security Act of 2007, which will require 700 million tons of biomass to be sustainably delivered to biorefineries annually. Lignocellulosic biomass will make an important contribution towards meeting DOE’s ethanol production goals. For the biofuels industry to be an economically viable enterprise, the feedstock supply system (i.e., moving the biomass from the field to the refinery) cannot contribute more that 30% of the total cost of the biofuel production. The Idaho National Laboratory in collaboration with Oak Ridge National Laboratory, University of California, Davis and Kansas State University are developing a set of tools for identifying economical, sustainable feedstocks on a regional basis based on biorefinery siting.

  18. Power Supply Unit

    NASA Technical Reports Server (NTRS)

    1982-01-01

    The Cuk DC to DC Switching Converter was developed by Caltech Professors, Slobodan Cuk and R. D. Middlebrook. The converter changes unsuitable dc voltage into one or more voltages suitable for powering electronic equipment; it can also be used in converting dc current to ac and vice versa. It was named one of the 100 most significant technical advances of 1979. The Cuk converter is more efficient than previous conversion devices, simpler, smaller, lighter, cheaper and highly reliable. The first application of the technology is in the Compucorp 685 word/data processor, manufactured by Compucorp. NASA waived title rights; Caltech granted exclusive license to the inventors, who in turn, transferred their rights to a company they founded called TESLA Company, which sublicenses the converter design and related technology to companies making power supplies for use in their own products.

  19. Computer-Assisted Laboratory Stations.

    ERIC Educational Resources Information Center

    Snyder, William J., Hanyak, Michael E.

    1985-01-01

    Describes the advantages and features of computer-assisted laboratory stations for use in a chemical engineering program. Also describes a typical experiment at such a station: determining the response times of a solid state humidity sensor at various humidity conditions and developing an empirical model for the sensor. (JN)

  20. Radio-frequency power-assisted performance improvement of a magnetohydrodynamic power generator

    SciTech Connect

    Murakami, Tomoyuki; Okuno, Yoshihiro; Yamasaki, Hiroyuki

    2005-12-01

    We describe a radio-frequency (rf) electromagnetic-field-assisted magnetohydrodynamic power generation experiment, where an inductively coupled rf field (13.56 MHz, 5.2 kW) is continuously supplied to the disk generator. The rf power assists the precise plasma ignition, by which the otherwise irregular plasma behavior was stabilized. The rf heating suppresses the ionization instability in the plasma behavior and homogenizes the nonuniformity of the plasma structures. The power-generating performance is significantly improved with the aid of the rf power under wide seeding conditions: insufficient, optimum, and excessive seed fractions. The increment of the enthalpy extraction ratio of around 2% is significantly greater than the fraction of the net rf power, that is, 0.16%, to the thermal input.

  1. Oxygen supplies in disaster management.

    PubMed

    Blakeman, Thomas C; Branson, Richard D

    2013-01-01

    Mass casualty events and disasters, both natural and human-generated, occur frequently around the world and can generate scores of injured or ill victims in need of resources. Of the available medical supplies, oxygen remains the critical consumable resource in disaster management. Strategic management of oxygen supplies in disaster scenarios remains a priority. Hospitals have large supplies of liquid oxygen and a supply of compressed gas oxygen cylinders that allow several days of reserve, but a large influx of patients from a disaster can strain these resources. Most backup liquid oxygen supplies are attached to the main liquid system and supply line. In the event of damage to the main system, the reserve supply is rendered useless. The Strategic National Stockpile supplies medications, medical supplies, and equipment to disaster areas, but it does not supply oxygen. Contracted vendors can deliver oxygen to alternate care facilities in disaster areas, in the form of concentrators, compressed gas cylinders, and liquid oxygen. Planning for oxygen needs following a disaster still presents a substantial challenge, but alternate care facilities have proven to be valuable in relieving pressure from the mass influx of patients into hospitals, especially for those on home oxygen who require only an electrical source to power their oxygen concentrator. PMID:23271827

  2. Local electric utility assists pumping station rehabilitation

    SciTech Connect

    Roll, R. )

    1992-03-01

    Many wastewater treatment facilities, constructed with assistance from the Construction Grants Program, have been in service long enough to be facing replacement of major components that are approaching the end of their useful lives. The city of Niagara Falls, N.Y. is presently engaged in a pumping station rehabilitation project for which it will receive partial funding from the local electric utility. The assistance in the form of a one-time payment is possible because of the incorporation of energy-saving equipment in the station redesign. These kinds of incentives are available from many utilities throughout the country to assist customers who implement energy-saving projects within specific utility guidelines. The goal of these projects is to pursue cost-effective methods for balancing the supply and demand for electricity. Niagara Mohawk Power Corporation (NMPC) encourages the installation of high-efficiency and energy-saving equipment by offering assistance to reduce initial purchase costs.

  3. Web-Assisted and Online Learning.

    ERIC Educational Resources Information Center

    McEwen, Beryl C.

    2001-01-01

    Argues that distance learning technologies are tools. Offers the author's experiences of teaching web-assisted as well as online courses as examples of different approaches to distance learning, each with totally different dynamics. Concludes that meaningful learning took place in both classes, whether web-assisted traditional instruction or…

  4. Helping Schools Change: Ideas for Assistance Groups.

    ERIC Educational Resources Information Center

    Moore, Donald R.; Blair, Kathy A.

    Based on the experiences of six organizations, this manual aims to help assistance groups who work to change the way schools actually treat children. Assistance group members can include principal or teacher advisors, curriculum consultants, group process facilitators, dissemination or staff development specialists, parent trainers or organizers,…

  5. Optics Supply Planning System

    SciTech Connect

    Gaylord, J

    2009-04-30

    The purpose of this study is to specify the design for an initial optics supply planning system for NIF, and to present quality assurance and test plans for the construction of the system as specified. The National Ignition Facility (NIF) is a large laser facility that is just starting operations. Thousands of specialized optics are required to operate the laser, and must be exchanged over time based on the laser shot plan and predictions of damage. Careful planning and tracking of optic exchanges is necessary because of the tight inventory of spare optics, and the long lead times for optics procurements and production changes. Automated inventory forecasting and production planning tools are required to replace existing manual processes. The optics groups members who are expected to use the supply planning system are the stakeholders for this project, and are divided into three groups. Each of these groups participated in a requirements specification that was used to develop this design. (1) Optics Management--These are the top level stakeholdersk, and the final decision makers. This group is the interface to shot operations, is ultimately responsible for optics supply, and decides which exchanges will be made. (2) Work Center Managers--This group manages the on site optics processing work centers. They schedule the daily work center operations, and are responsible for developing long term processing, equipment, and staffing plans. (3) Component Engineers--This group manages the vendor contracts for the manufacture of new optics and the off site rework of existing optics. They are responsible for sourcing vendors, negotiating contracts, and managing vendor processes. The scope of this analysis is to describe the structure and design details of a system that will meet all requirements that were described by stakeholders and documented in the analysis model for this project. The design specifies the architecture, components, interfaces, and data stores of the system

  6. Developing sustainable food supply chains.

    PubMed

    Smith, B Gail

    2008-02-27

    This paper reviews the opportunities available for food businesses to encourage consumers to eat healthier and more nutritious diets, to invest in more sustainable manufacturing and distribution systems and to develop procurement systems based on more sustainable forms of agriculture. The important factors in developing more sustainable supply chains are identified as the type of supply chain involved and the individual business attitude to extending responsibility for product quality into social and environmental performance within their own supply chains. Interpersonal trust and working to standards are both important to build more sustainable local and many conserved food supply chains, but inadequate to transform mainstream agriculture and raw material supplies to the manufactured and commodity food markets. Cooperation among food manufacturers, retailers, NGOs, governmental and farmers' organizations is vital in order to raise standards for some supply chains and to enable farmers to adopt more sustainable agricultural practices. PMID:17766237

  7. Cholangiocytes and blood supply

    PubMed Central

    Gaudio, Eugenio; Franchitto, Antonio; Pannarale, Luigi; Carpino, Guido; Alpini, Gianfranco; Francis, Heather; Glaser, Shannon; Alvaro, Domenico; Onori, Paolo

    2006-01-01

    The microvascular supply of the biliary tree, the peribiliary plexus (PBP), stems from the hepatic artery branches and flows into the hepatic sinusoids. A detailed three-dimensional study of the PBP has been performed by using the Scanning Electron Microscopy vascular corrosion casts (SEMvcc) technique. Considering that the PBP plays a fundamental role in supporting the secretory and absorptive functions of the biliary epithelium, their organization in either normalcy and pathology is explored. The normal liver shows the PBP arranged around extra- and intrahepatic biliary tree. In the small portal tract PBP was characterized by a single layer of capillaries which progressively continued with the extrahepatic PBP where it showed a more complex vascular network. After common duct ligation (BDL), progressive modifications of bile duct and PBP proliferation are observed. The PBP presents a three-dimensional network arranged around many bile ducts and appears as bundles of vessels, composed by capillaries of homogeneous diameter with a typical round mesh structure. The PBP network is easily distinguishable from the sinusoidal network which appears normal. Considering the enormous extension of the PBP during BDL, the possible role played by the Vascular Endothelial Growth Factor (VEGF) is evaluated. VEGF-A, VEGF-C and their related receptors appeared highly immunopositive in proliferating cholangiocytes of BDL rats. The administration of anti-VEGF-A or anti-VEGF-C antibodies to BDL rats as well as hepatic artery ligation induced a reduced bile duct mass. The administration of rVEGF-A to BDL hepatic artery ligated rats prevented the decrease of cholangiocyte proliferation and VEGF-A expression as compared to BDL control rats. These data suggest the role of arterial blood supply of the biliary tree in conditions of cholangiocyte proliferation, such as it occurs during chronic cholestasis. On the other hand, the role played by VEGF as a tool of cross-talk between

  8. Reliability Estimates for Power Supplies

    SciTech Connect

    Lee C. Cadwallader; Peter I. Petersen

    2005-09-01

    Failure rates for large power supplies at a fusion facility are critical knowledge needed to estimate availability of the facility or to set priorties for repairs and spare components. A study of the "failure to operate on demand" and "failure to continue to operate" failure rates has been performed for the large power supplies at DIII-D, which provide power to the magnet coils, the neutral beam injectors, the electron cyclotron heating systems, and the fast wave systems. When one of the power supplies fails to operate, the research program has to be either temporarily changed or halted. If one of the power supplies for the toroidal or ohmic heating coils fails, the operations have to be suspended or the research is continued at de-rated parameters until a repair is completed. If one of the power supplies used in the auxiliary plasma heating systems fails the research is often temporarily changed until a repair is completed. The power supplies are operated remotely and repairs are only performed when the power supplies are off line, so that failure of a power supply does not cause any risk to personnel. The DIII-D Trouble Report database was used to determine the number of power supply faults (over 1,700 reports), and tokamak annual operations data supplied the number of shots, operating times, and power supply usage for the DIII-D operating campaigns between mid-1987 and 2004. Where possible, these power supply failure rates from DIII-D will be compared to similar work that has been performed for the Joint European Torus equipment. These independent data sets support validation of the fusion-specific failure rate values.

  9. Zapping the food supply

    SciTech Connect

    Louria, D.B. )

    1990-09-01

    The idea of exposing food to gamma radiation is over 30 years old, and in 1963 the Food and Drug Administration (FDA) began to permit the irradiation of wheat. Over the years, a few more foodstuffs such as spices and tea were added, but in 1984 the FDA started to approve irradiation of a much broader list of products which now includes meat, poultry, and fresh fruits and vegetables. Simultaneously the FDA has increased the levels of radiation that may be used. The FDA's recent willingness to allow most of the food supply to be irradiated - and at high doses - has triggered an acrimonious debate. The amount of radiation involved is substantial, with intensities millions of times greater than that of an ordinary chest X-ray. The announced goal of promoters of food irradiation is to obtain general approval for the use of up to one million rad. Irradiation does not make food radioactive, nor has alleged radioactivity been at issue in the debate. But there is concern that foods processed by irradiation may contain radiolytic products that could have toxic effects. 12 refs.

  10. Richard Gilbert, Reporter and Assistant City Editor.

    ERIC Educational Resources Information Center

    Bender, Larry

    1988-01-01

    Looks at the experiences of Richard Gilbert, reporter and assistant editor for "The Herald Telephone," a daily newspaper in Bloomington, Indiana, and discusses Gilbert's suggested guidelines for high school journalism advisers. (MS)

  11. Piezoelectrically assisted ultrafiltration

    SciTech Connect

    Ahner, N.; Gottschlich, D.; Narang, S.; Roberts, D.; Sharma, S.; Ventura, S.

    1993-01-01

    The authors have demonstrated the feasibility of using piezoelectrically assisted ultrafiltration to reduce membrane fouling and enhance the flux through ultrafiltration membranes. A preliminary economic evaluation, accounting for the power consumption of the piezoelectric driver and the extent of permeate flow rate enhancement, has also shown that piezoelectrically assisted ultrafiltration is cost effective and economically competitive in comparison with traditional separation processes. Piezoelectric transducers, such as a piezoelectric lead zirconate titanate (PZT) disc or a piezoelectric horn, driven by moderate power, significantly enhance the permeate flux on fouled membranes, presumably because they promote local turbulence. Several experiments were conducted on polysulfone and regenerated cellulose UF membranes fouled during filtration of model feed solutions. Solutions of poly(ethylene glycol) and of high-molecular weight dextran were used as models. The authors found that they could significantly increase the permeate flux by periodically driving the piezoelectric transducer, horn or PZT disc, by application of moderate power over short periods of time, from 20 to 90 seconds. Enhancements as high as a factor of 8 were recorded within a few seconds, and enhanced permeate fluxes were maintained over a prolonged period (up to 3 hours). The prolonged flux enhancement makes it feasible to drive the piezoelectric transducer intermittently, thereby reducing the power consumption of the piezoelectric driver. As piezoelectric drivers of sonically assisted ultrafiltration, PZT disc transducers are preferred over the piezoelectric horn because of their small size and ease of adaptability to ultrafiltration test cells. The horn transmits sonic energy to the UF membrane through a titanium element driven by a separate piezoelectric transducer, but a piezoelectric ceramic disc transmits energy directly to the UF membrane.

  12. Repetitive resonant railgun power supply

    DOEpatents

    Honig, E.M.; Nunnally, W.C.

    1985-06-19

    A repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. The supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capacitor and a magnetic switch to transfer energy between the resonant circuit and the pair of parallel rails for the propelling of projectiles.

  13. Repetitive resonant railgun power supply

    DOEpatents

    Honig, Emanuel M.; Nunnally, William C.

    1988-01-01

    A repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. The supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capacitor and a magnetic switch to transfer energy between the resonant circuit and the pair of parallel rails for the propelling of projectiles.

  14. [Circulatory assist devices in cardiology].

    PubMed

    Ferrari, M; Figulla, H R

    2005-03-24

    One out of 13 patients with an acute myocardial infarction is endangered of cardiogenic shock. In addition, acute valvular leakage, shunt vitiae, and acute myocarditis can lead to acute myocardial failure. As a therapeutic option, mechanical assist devices offer cardiac support and hemodynamic stabilization under these circumstances. The following minimal-invasive devices are used in cardiology and intensive care medicine: intra-aortic balloon pulsation (IABP), intra-vascular axial screw pumps, extra-corporal centrifugal pumps with and without additional membrane oxygenator. The IABP improves left ventricular function by a systolic reduction of the after-load, and an increase of diastolic blood pressure dependent on myocardial function. In contrast, axial screw pumps and centrifugal pumps can provide circulatory support independently of myocardial function. Mechanical assist devices can prevent irreversible damage not only by offering a reduction of myocardial work load, but also by improving organ perfusion in cardiogenic shock situations. Another indication for mechanical circulatory support depicts high-risk coronary angioplasty if the left ventricular ejection fraction is severely reduced or the target vessel supplies more than 50 % of vital myocardium. In case of irreversible heart failure, turbine pumps or centrifugal pumps offer a stabilization for the patient's transfer to a cardiac surgery center. They can also be used for bridging to heart transplantation in acute situations. Technical improvements will enhance the use of mechanical assist devices in the near future. Especially the development of portable emergency devices will enrich therapeutic possibilities in cardiology and intensive care medicine. PMID:15776348

  15. Robotically Assisted Endoscopic Ovarian Transposition

    PubMed Central

    Wedergren, June S.; Carlson, Mark A.

    2003-01-01

    Background: Ovarian transposition is the anatomical relocation of the ovaries from the pelvis to the abdomen. Transposition is beneficial in women who are to undergo pelvic radiation, because it allows maintenance of ovarian function and preservation of assisted reproductive capacity. Methods: The da Vinci surgical system (Intuitive Surgical™, Mountainview, CA, USA) was used to perform an endoscopic ovarian transposition. The ovaries were mobilized on their respective infundibulopelvic ligaments and sutured to the ipsilateral pericolic gutters. Results: A series of laboratory sessions using the da Vinci system was completed at our institution's training facility. Surgical experience included cadaveric pelvic dissection and abdominopelvic procedures on anesthetized porcine models. Additional didactic and laboratory training, including a certification examination, was obtained from Intuitive Surgical, Inc. The first clinical case of robotically assisted endoscopic ovarian transposition was performed. Conclusions: Robotically assisted endoscopy was successfully used for ovarian transposition. PMID:12723000

  16. Petroleum supply monthly, August 1993

    SciTech Connect

    Not Available

    1993-09-01

    This publication the Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report, (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. Data presented are divided into Summary Statistics and Detailed Statistics.

  17. Biofuel supply chain, market, and policy analysis

    NASA Astrophysics Data System (ADS)

    Zhang, Leilei

    that have complex ramifications and result in sophisticate interactions among multiple stakeholders. The third part of the dissertation investigates the impacts of flexible fuel vehicles (FFVs) market penetration levels on the market outcomes, including cellulosic biofuel production and price, blended fuel market price, and profitability of each stakeholder in the biofuel supply chain for imperfectly competitive biofuel markets. In this paper, I investigate the penetration levels of FFVs by incorporating the substitution among different fuels in blended fuel demand functions through "cross price elasticity" in a bottom-up equilibrium model framework. The complementarity based problem is solved by a Taylor expansion-based iterative procedure. At each step of the iteration, the highly nonlinear complementarity problems with constant elasticity of demand functions are linearized into linear complimentarity problems and solved until it converges. This model can be applied to investigate the interaction between the stakeholders in the biofuel market, and to assist decision making for both cellulosic biofuel investors and government.

  18. Fort Apache Timber Company wood fuel supply assessment

    SciTech Connect

    Whittier, J.; Haase, S.; Quinn, M.

    1994-12-31

    The Fort Apache Timber Company, owned and operated by the White Mountain Apache Tribe, is currently investigating the feasibility of building a cogeneration plant at its sawmill in Whiteriver, Arizona. As part of this effort, the U.S. Department of Energy`s Western Regional Biomass Energy Program provided technical assistance to the tribe to conduct a fuel supply study. The fuel supply study determined that 104,000 bone dry tons (BDT) of mill residue are available on an annual basis, at an average cost of $14/BDT. An additional 30,000 BDT/year would be available at an average delivered cost of $25/BDT if 25 percent of the in-forest logging residue is collected and transported to the plant site. Together, the mill and logging residues could supply a 14 megawatt power plant at an average delivered cost of $1.37 per million Btu.

  19. Power Supplies for High Energy Particle Accelerators

    NASA Astrophysics Data System (ADS)

    Dey, Pranab Kumar

    2016-06-01

    The on-going research and the development projects with Large Hadron Collider at CERN, Geneva, Switzerland has generated enormous enthusiasm and interest amongst all to know about the ultimate findings on `God's Particle'. This paper has made an attempt to unfold the power supply requirements and the methodology adopted to provide the stringent demand of such high energy particle accelerators during the initial stages of the search for the ultimate particles. An attempt has also been made to highlight the present status on the requirement of power supplies in some high energy accelerators with a view that, precautionary measures can be drawn during design and development from earlier experience which will be of help for the proposed third generation synchrotron to be installed in India at a huge cost.

  20. Power Supplies for High Energy Particle Accelerators

    NASA Astrophysics Data System (ADS)

    Dey, Pranab Kumar

    2015-05-01

    The on-going research and the development projects with Large Hadron Collider at CERN, Geneva, Switzerland has generated enormous enthusiasm and interest amongst all to know about the ultimate findings on `God's Particle'. This paper has made an attempt to unfold the power supply requirements and the methodology adopted to provide the stringent demand of such high energy particle accelerators during the initial stages of the search for the ultimate particles. An attempt has also been made to highlight the present status on the requirement of power supplies in some high energy accelerators with a view that, precautionary measures can be drawn during design and development from earlier experience which will be of help for the proposed third generation synchrotron to be installed in India at a huge cost.

  1. Veterans as physician assistants.

    PubMed

    Brock, Douglas; Evans, Timothy; Garcia, Drew; Bester, Vanessa; Gianola, F J

    2015-11-01

    The physician assistant (PA) profession emerged nearly 50 years ago to leverage the healthcare experience of Vietnam-era military trained medics and corpsmen to fill workforce shortages in medical care. In 2009, the American Recovery and Reinvestment Act Primary Care Training and Enhancement program was established to improve access to primary care. Training military veterans as PAs was again identified as a strategy to meet provider access shortages. However, fewer than 4% of veterans with military healthcare training are likely to apply to PA school and little is known regarding the factors that predict acceptance to training. In 2012, we surveyed all veteran applicants and a stratified random sample of nonveterans applying to PA training. We compare the similarities and differences between veteran and nonveteran applicants, application barriers, and the factors predicting acceptance. We conclude with a discussion of the link between modern veterans and the PA profession. PMID:26501578

  2. Computer-assisted navigation system in intranasal surgery

    NASA Astrophysics Data System (ADS)

    Rapiejko, Piotr; Wojdas, Andrzej; Wawrzyniak, Zbigniew M.; Jurkiewicz, Dariusz

    2005-02-01

    Due to anatomical variability and limited visibility of endoscopic image, endoscopic operations of nose and paranasal sinuses are ones of the most difficult surgical procedures. The field of operation often comprises anatomical structures, which often present anomalies. Computer-assisted navigational endoscopic surgery consists of routine tomography with the possibility of 3-axis projection allowing for localization of surgical instruments in proper relation to anatomic structures. This potential permits the surgeon to penetrate specific structures with surgical instruments and visualize their localization on computer tomography, which was earlier entered to the computer and projected. Projection of the images and endoscopic picture on the same monitor provides comfort to the operator and feeling of safety to the operated patient. The image analysis feature supplies a set of information necessary for safer and more effective procedure conduction and decreased number of complications. This technique may considerably contribute to training programs in endoscopic surgery. Computer-aided navigation in surgical procedures allows for precise biopsy specimen uptake for pathological examination, even in cases requiring precision up to 1 mm. The authors present an overview of surgical computer-aided navigation systems and their own experience in endoscopic ethmoid and maxillary sinus surgery performed with the use of computer-assisted navigation system.

  3. Electromagnetic Induction: A Computer-Assisted Experiment

    ERIC Educational Resources Information Center

    Fredrickson, J. E.; Moreland, L.

    1972-01-01

    By using minimal equipment it is possible to demonstrate Faraday's Law. An electronic desk calculator enables sophomore students to solve a difficult mathematical expression for the induced EMF. Polaroid pictures of the plot of induced EMF, together with the computer facility, enables students to make comparisons. (PS)

  4. Computer-Assisted Experiments with Oscillatory Circuits

    ERIC Educational Resources Information Center

    Fernandes, J. C.; Ferraz, A.; Rogalski, M. S.

    2010-01-01

    A basic setup for data acquisition and analysis from an oscillatory circuit is described, with focus on its application as either low-pass, high-pass, band-pass or band-reject frequency filter. A homemade board containing the "RLC" elements allows for the interchange of some of them, in particular, for the easy change of the "R" value, and this…

  5. The Anaesthesia Gas Supply System

    PubMed Central

    Das, Sabyasachi; Chattopadhyay, Subhrajyoti; Bose, Payel

    2013-01-01

    The anaesthesia gas supply system is designed to provide a safe, cost-effective and convenient system for the delivery of medical gases at the point of-use. The doctrine of the anaesthesia gas supply system is based on four essential principles: Identity, continuity, adequacy and quality. Knowledge about gas supply system is an integral component of safe anaesthetic practice. Mishaps involving the malfunction or misuse of medical gas supply to operating theatres have cost many lives. The medical gases used in anaesthesia and intensive care are oxygen, nitrous oxide, medical air, entonox, carbon dioxide and heliox. Oxygen is one of the most widely used gases for life-support and respiratory therapy besides anaesthetic procedures. In this article, an effort is made to describe the production, storage and delivery of anaesthetic gases. The design of anaesthesia equipment must take into account the local conditions such as climate, demand and power supply. The operational policy of the gas supply system should have a backup plan to cater to the emergency need of the hospital, in the event of the loss of the primary source of supply. PMID:24249882

  6. Water supply and demand in an energy supply model

    SciTech Connect

    Abbey, D; Loose, V

    1980-12-01

    This report describes a tool for water and energy-related policy analysis, the development of a water supply and demand sector in a linear programming model of energy supply in the United States. The model allows adjustments in the input mix and plant siting in response to water scarcity. Thus, on the demand side energy conversion facilities can substitute more costly dry cooling systems for conventional evaporative systems. On the supply side groundwater and water purchased from irrigators are available as more costly alternatives to unappropriated surface water. Water supply data is developed for 30 regions in 10 Western states. Preliminary results for a 1990 energy demand scenario suggest that, at this level of spatial analysis, water availability plays a minor role in plant siting. Future policy applications of the modeling system are discussed including the evaluation of alternative patterns of synthetic fuels development.

  7. First assisting in obstetrics: a primer for women's healthcare professionals.

    PubMed

    Tharpe, Nell

    2007-01-01

    As the cesarean rate rises nationwide, many maternity nurses, certified nurse-midwives, certified midwives, and other women's health nursing professionals are expanding their scope of practice to include first assisting with cesarean delivery. Becoming qualified to assist with cesarean section requires evaluation of facility, state, regulatory, and professional standards related to first assistants. First assisting education programs offer didactic education and clinical experience designed to ensure that surgical assistants are competent. Surgical first assistants for cesarean section are expected to be knowledgeable regarding the procedure, the relevant surgical anatomy, potential complications, and options for treatment. Acquiring clinical skills requires significant intraoperative experience under the tutelage of a knowledgeable mentor. In this article, the cesarean section procedure and the role and expectations of the surgical first assistant are described to provide the women's health nursing professional with the information needed to determine whether to include surgical first assisting with cesarean section as part of their professional practice. PMID:17301665

  8. Electric Transport Traction Power Supply System With Distributed Energy Sources

    NASA Astrophysics Data System (ADS)

    Abramov, E. Y.; Schurov, N. I.; Rozhkova, M. V.

    2016-04-01

    The paper states the problem of traction substation (TSS) leveling of daily-load curve for urban electric transport. The circuit of traction power supply system (TPSS) with distributed autonomous energy source (AES) based on photovoltaic (PV) and energy storage (ES) units is submitted here. The distribution algorithm of power flow for the daily traction load curve leveling is also introduced in this paper. In addition, it illustrates the implemented experiment model of power supply system.

  9. Petroleum supply monthly, April 1994

    SciTech Connect

    Not Available

    1994-04-01

    Data presented in the Petroleum Supply Monthly (PSM) describe the supply and disposition of petroleum products in the United States and major US geographical regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the US. The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the US.

  10. Petroleum supply monthly, February 1994

    SciTech Connect

    Not Available

    1994-03-01

    The Petroleum Supply Monthly presents data describing the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the US. The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders; operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. Data are divided into two sections: Summary statistics and Detailed statistics.

  11. Multiple resonant railgun power supply

    SciTech Connect

    Honig, E.M.; Nunnally, W.C.

    1985-06-19

    A multiple repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. A plurality of serially connected paired parallel rails are powered by similar power supplies. Each supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capacitor and a magnetic switch to transfer energy between the resonant circuit and the pair of parallel rails for the propelling of projectiles. The multiple serial operation permits relatively small energy components to deliver overall relatively large amounts of energy to the projectiles being propelled.

  12. Multiple resonant railgun power supply

    SciTech Connect

    Honig, Emanuel M.; Nunnally, William C.

    1988-01-01

    A multiple repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. A plurality of serially connected paired parallel rails are powered by similar power supplies. Each supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capacitor and a magnetic switch to transfer energy between the resonant circuit and the pair of parallel rails for the propelling of projectiles. The multiple serial operation permits relatively small energy components to deliver overall relatively large amounts of energy to the projectiles being propelled.

  13. Educating the Employee Assistance Professional: Cornell University's Employee Assistance Education and Research Program.

    ERIC Educational Resources Information Center

    Quick, R. C.; And Others

    1987-01-01

    Outlines Cornell University's Employee Assistance Education and Research Program, which uses an academic curriculum and field experience to further develop the Employee Assistance Program (EAP) profession. Addresses the dilemma of personnel executives in ensuring quality in EAP programs and staff. (JOW)

  14. Assisted Living Expansion and the Market for Nursing Home Care

    PubMed Central

    Grabowski, David C; Stevenson, David G; Cornell, Portia Y

    2012-01-01

    Objective To analyze the effect of market-level changes in assisted living supply on nursing home utilization and resident acuity. Data Sources Primary data on the supply of assisted living over time were collected from 13 states from 1993 through 2007 and merged with nursing home-level data from the Online Survey Certification and Reporting System and market-level information from the Area Resource File. Study Design Least squares regression specification incorporating market and time-fixed effects. Principal Findings A 10 percent increase in assisted living capacity led to a 1.4 percent decline in private-pay nursing home occupancy and a 0.2–0.6 percent increase in patient acuity. Conclusions Assisted living serves as a potential substitute for nursing home care for some healthier individuals with greater financial resources, suggesting implications for policy makers, providers, and consumers. PMID:22578039

  15. Assisted Living Community Profile

    MedlinePlus

    ... News & Media News Releases Media Resources AHCA/NCAL Gazette Publications Social Media Resources & Publications Currently selected Assisted ... News & Media News Releases Media Resources AHCA/NCAL Gazette Publications Social Media Resources & Publications Assisted Living Studies ...

  16. Assisted Vaginal Delivery

    MedlinePlus

    ... having a repeat assisted vaginal delivery in a future pregnancy? If you have had one assisted vaginal ... a vacuum device. Vacuum Device: A metal or plastic cup that is applied to the fetus’ head ...

  17. Partnership for Prescription Assistance

    MedlinePlus

    ... may use our name without our permission. The Partnership for Prescription Assistance will help you find the ... Us Blog Facebook Twitter Start living better. The Partnership for Prescription Assistance helps qualifying patients without prescription ...

  18. The 3He Supply Problem

    SciTech Connect

    Kouzes, Richard T.

    2009-05-01

    One of the main uses for 3He is in gas proportional counters for neutron detection. Radiation portal monitors deployed for homeland security and non-proliferation use such detectors. Other uses of 3He are for research detectors, commercial instruments, well logging detectors, dilution refrigerators, for targets or cooling in nuclear research, and for basic research in condensed matter physics. The US supply of 3He comes almost entirely from the decay of tritium used in nuclear weapons by the US and Russia. A few other countries contribute a small amount to the world’s 3He supply. Due to the large increase in use of 3He for homeland security, the supply has dwindled, and can no longer meet the demand. This white paper reviews the problems of supply, utilization, and alternatives.

  19. Predictive methodology for supply disruptions

    SciTech Connect

    Beller, M.; D'Acierno, J.

    1982-04-01

    Energy supply disruptions do not suddenly arise in a full-blown fashion. Lags in the energy system provide a time horizon which allows for the prediction of a possible supply problem. A simple model is described which can be used to provide a set of indicators for the possible onset of an energy emergency. The methodology was tested on the gasoline shortage of 1979, and the results are presented.

  20. ORION downconverter and power supply

    NASA Technical Reports Server (NTRS)

    Nishimura, H. G.

    1982-01-01

    The receiver subsystem supplies the front end assembly (downconverter) and power supply for the ORION Mobile Station. These assemblies are designed to withstand severe environmental conditions. The mechanical, electronic, environmental and maintenance design considerations encountered during the design phase of this project are discussed. The two channel S/X downconverter has a 400 MHz bandwidth channel. Phase stability of 2 and 7 deg at S- and X-bands, respectively, is achieved with a temperature stabilized first local oscillator.

  1. Advanced Vapor-Supply Manifold

    NASA Technical Reports Server (NTRS)

    Clark, I. O.; Debnam, William J., Jr.; Fripp, Archibald L., Jr.; Crouch, R. K.

    1986-01-01

    Advanced vapor-supply manifold solves problem of manifold purging. Design virtually eliminates dead gas volumes in manifold system. System incorporates special valve into manifold in way that leaks and contamination problems of previous systems, which use tees and three-port valves, are minimized or eliminated in both main manifold line and in supply line. Of considerable use in gas manifold systems where even small amounts of gaseous impurities constitute problem or where more than one gaseous material used in single system.

  2. TRANSISTOR HIGH VOLTAGE POWER SUPPLY

    DOEpatents

    Driver, G.E.

    1958-07-15

    High voltage, direct current power supplies are described for use with battery powered nuclear detection equipment. The particular advantages of the power supply described, are increased efficiency and reduced size and welght brought about by the use of transistors in the circuit. An important feature resides tn the employment of a pair of transistors in an alternatefiring oscillator circuit having a coupling transformer and other circuit components which are used for interconnecting the various electrodes of the transistors.

  3. [Power units of implanted artificial heart and assisted circulation system].

    PubMed

    Kiselev, Iu M; Kremnev, V A; Sadov, V V; Spiridonov, V A

    1976-01-01

    The existing and presently planned systems of power supply for an artificially implanted heart and assisted circulation devices are reviewed. A comparative analysis as to their conformability to biological, functional and technical demands placed on the implanted systems is given. In an implanted artificial heart and assisted circulation systems most promising is shown to be the use of nuclear fuel as a source of power and as converters -- that of thermal engines with gas and steam cycle. PMID:1025440

  4. Dental Assisting Program Guide.

    ERIC Educational Resources Information Center

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

    This program guide contains the standard dental assisting curriculum for technical institutes in Georgia. The curriculum encompasses the minimum competencies required for entry-level dental assistants, and includes job skills in the technical areas of preventive dentistry; four-handed dentistry; chairside assisting with emphasis in diagnostics,…

  5. Reinforcement learning in supply chains.

    PubMed

    Valluri, Annapurna; North, Michael J; Macal, Charles M

    2009-10-01

    Effective management of supply chains creates value and can strategically position companies. In practice, human beings have been found to be both surprisingly successful and disappointingly inept at managing supply chains. The related fields of cognitive psychology and artificial intelligence have postulated a variety of potential mechanisms to explain this behavior. One of the leading candidates is reinforcement learning. This paper applies agent-based modeling to investigate the comparative behavioral consequences of three simple reinforcement learning algorithms in a multi-stage supply chain. For the first time, our findings show that the specific algorithm that is employed can have dramatic effects on the results obtained. Reinforcement learning is found to be valuable in multi-stage supply chains with several learning agents, as independent agents can learn to coordinate their behavior. However, learning in multi-stage supply chains using these postulated approaches from cognitive psychology and artificial intelligence take extremely long time periods to achieve stability which raises questions about their ability to explain behavior in real supply chains. The fact that it takes thousands of periods for agents to learn in this simple multi-agent setting provides new evidence that real world decision makers are unlikely to be using strict reinforcement learning in practice. PMID:19885962

  6. Petroleum supply monthly, April 1990

    SciTech Connect

    1990-06-26

    The Petroleum Supply Monthly (PSM) is one of a family of three publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other two publications are the Weekly Petroleum Status Report (WPSR) and the Petroleum Supply Annual (PSA). Data presented in the Petroleum Supply Monthly describe (PSM) the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in Primary Supply.'' Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: (1) the Summary Statistics and (2) the Detailed Statistics.

  7. Soviet uranium supply capability

    SciTech Connect

    1990-02-01

    For many years, only limited information concerning uranium deposits in the USSR has been available from Soviet sources. The Soviet Union has, however, cooperated in some past efforts to promote interaction with the international scientific community. For example, in 1984 the Soviet Union hosted the 27th International Geological Congress (IGC). The uranium portion included 50 papers, primarily on uranium deposits in sandstone and metamorphic rocks, presented to about 300 members. The IGC sponsored almost 400 geology field trips, the most noteworthy of which was a five-day trip to the Krivoi Rog iron and uranium district in the south-central Ukraine, including visits to two open-pit iron mines and the underground Novaya uranium mine in Zholtye Vody. That conference was reported in detail on the October 1984 NUEXCO Monthly Report. Some other information that has been made available over the years is contained in the April 1985 Report discussion of uranium deposit classifications. Advanced processing technology, low-cost labor, by-product and co-product recovery, and the large existing production capacity enable MAEI to produce nuclear fuel at low cost. The Soviet Union`s reserve base, technological development, and production experience make it one of the world`s leading producers of nuclear fuel. As additional information is made available for publication, NUEXCO will present updated reports on the nuclear fuel cycle facilities in the Soviet Union.

  8. 43 CFR 404.14 - How will Reclamation provide notice of opportunities for assistance under the program?

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Relating to Public Lands BUREAU OF RECLAMATION, DEPARTMENT OF THE INTERIOR RECLAMATION RURAL WATER SUPPLY... Web site for announcement of Federal assistance opportunities. Opportunities for assistance will also... program? Notice of opportunities for assistance to conduct an appraisal investigation or a...

  9. 78 FR 3031 - Amended Certification Regarding Eligibility To Apply for Worker Adjustment Assistance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-15

    ... Register on October 5, 2012 (77 FR 194). Workers are engaged in activities related to the supply of new..., are eligible to apply for adjustment assistance under Chapter 2 of Title II of the Trade Act of...

  10. Flight control experiences

    NASA Technical Reports Server (NTRS)

    Musgrave, F. S.

    1977-01-01

    A multidisciplinary medical-management team at mission control provided Skylab crew support by monitoring health, retrieving and compiling experimental data, assisting in the development of flight plans, and by contributing to in-flight procedures and checklists. Real time computers assisted the flight crews in performing medical and other experiments.

  11. Principal Experiences of Succession

    ERIC Educational Resources Information Center

    Steele, Farla Gay

    2015-01-01

    This multiple case study explored the experiences of school principals and the usefulness of Peters' (2011) succession planning model. Ten purposefully selected principals from varying grade levels were interviewed; none reported a formal succession plan, and all had been assistant principals. The study concluded the assistant principal position…

  12. Assessing Graduate Assistant Teacher Communication Concerns.

    ERIC Educational Resources Information Center

    Feezel, Jerry D.; Myers, Scott A.

    1997-01-01

    Finds that graduate teaching assistants (GTAs) experience eight interrelated types of communication concern (self, task, impact, role conflict, teaching, area knowledge, procedural knowledge, and time management). Shows that GTA variables of expected duties, prior teaching experience, newness to area, foreign or domestic birth, and age are likely…

  13. Sources of population and family planning assistance.

    PubMed

    1983-01-01

    This document assesses the current status of population and family planning assistance throughout the world and provides brief sketches of the available sources including national governments, intergovernmental agencies such as the UNFPA and other UN entities, and nongovernmental funding, technical assistance, or funding and technical assistance organizations. The descriptions of aid-granting organizations describe their purposes, sources of funding, and activities, and give addresses where further information may be sought. At present about $100 million of the US $1 billion spent for family planning in developing countries each year comes from individuals paying for their own supplies and services, over $400 million is spent by national governments on their own programs, and about $450 million comes from developed country governments and private agencies. Over half of external assistance appears to be channeled through international agencies, and only a few countries provide a substantial proportion of aid bilaterally. In the past decade several governments, particularly in Asia, significantly increased the share of program costs they assumed themselves, and the most populous developing countries, China, India, and Indonesia, now contribute most of the funding for their own programs. Although at least 130 countries have provided population aid at some time, most is given by 12 industrialized countries. The US Agency for International Development (USAID) is the largest single donor, but the US share of population assistance has declined to 50% of all assistance in 1981 from 60% in the early 1970s. Governments of Communist bloc countries have made only small contributions to international population assistance. Most governmental asistance is in cash grant form, but loans, grants in kind, and technical assistance are also provided. Private organizations give assistance primarily to other private organizations in developing countries, and have been major innovators in

  14. Guidelines for Analysis of Pharmaceutical Supply System Planning in Developing Countries. Volume 7: Pharmaceutical Supply System Planning. International Health Planning Methods Series.

    ERIC Educational Resources Information Center

    Schaumann, Leif; And Others

    Intended to assist Agency for International Development (AID) officers, advisors, and health officials in incorporating health planning into national plans for economic development, this seventh of ten manuals in the Interational Health Planning Methods Series deals with pharmaceutical supply systems planning in developing countries. Following an…

  15. Dissolved iron supply limits early growth of estuarine mangroves.

    PubMed

    Alongi, Daniel M

    2010-11-01

    Three mesocosm experiments were performed in an outdoor facility to quantify the responses of five mangrove species grown from seedling to sapling stage to increasing rates of dissolved iron supply. Stem extension and biomass of mangroves were measured in the first two experiments, and in the third experiment, rates of microbial iron reduction were measured in relation to stem extension of two mangrove species. In all experiments, mangrove growth was enhanced by increasing iron supply, although some species showed iron toxicity at the higher supply rates. In the first two experiments, stem extension rates of Rhizophora apiculata, Bruguiera gymnorrhiza, and Xylocarpus moluccensis best fit Gaussian curves with maximal growth at supply rates of 50-60 mmol Fe x m(-2) x d(-1), whereas growth of Avicennia marina and Ceriops tagal increased to the highest rate (100 mmol Fe x m(-2) x d(-1)) of iron supply. Changes in leaf chlorophyll concentrations and iron content of roots mirrored the growth responses. In the third experiment, rates of microbial iron reduction were greater with R. apiculata and A. marina than in controls without plants; for both species, there was a positive relationship between stem extension and iron reduction. The rates of iron reduction and rates of iron supplied to the plants were well within the range of interstitial iron concentrations and rates of iron reduction found in the natural mangrove soils from which the seedlings were obtained. The responses of these species show that mangroves growing from seedling to sapling stage have a strong nutritional requirement for iron, and that there is a close relationship between plant roots and the activities of iron-reducing bacteria. These results suggest that mangrove growth may be limited in some natural forests by the rate at which iron is solubilized by iron-reducing bacteria. Such biogeochemical conditions have significant implications for successful recruitment, establishment, and early growth of

  16. Humanitarian assistance: technical assessment and public health support for coordinated relief in the former Yugoslavia.

    PubMed

    Leus, X; Watson, F; Forte, G

    1993-01-01

    Since July 1992, the WHO Regional Office for Europe has been using epidemiological and public health assessment techniques to guide its interventions in the crisis in the former Yugoslavia. WHO field operations have evolved into the largest emergency relief operation ever undertaken in the European Region. The WHO programme of humanitarian assistance focuses on five major areas: public health, equipment, supplies and logistic support, support to war victims, primary health care for refugees and rehabilitation of the health care system. The main thrust of the programme is to implement the public health measures required for survival. The first step is to provide health intelligence for international humanitarian assistance programmes through health and nutrition monitoring. This leads to targeted intervention. While involved in all aspects of relief, WHO clearly justifies its presence by its technical focus, bringing its network of expertise and experience to bear on the assessment of need and the coordination of intervention. Three examples of this approach are given: the nutrition programme, which includes emergency food aid and health and nutrition monitoring, the winter protection programme in Bosnia and Herzegovina, and the medical kit programme, involving the design and use of special kits to cover basic emergency needs for medical supplies to the maximum number of people. In the former Yugoslavia, the WHO Regional Office for Europe has concentrated on technical situation analysis and sound public health grounding to guide and direct intervention. PMID:8017078

  17. Policy initiatives for electric-utility load management in AID-assisted countries

    SciTech Connect

    Not Available

    1990-08-01

    The demand for electricity has been growing at a rate of over 7 percent per year, on average, for developing countries (in contrast, demand has been rising by less than 3% annually in the United States). While developing nations have traditionally relied on building new power plants to satisfy their increasing needs for electricity, the strategy has proven to be expensive, consuming over one-quarter of their development budgets and over a quarter of their foreign borrowings. Load management, whereby an electric utility modifies its customers' demand characteristics, offers developing countries an alternative for reducing the need to construct new generating capacity and for better utilizing their existing supply facilities. To mitigate the problems associated with high energy growth rates, especially in the power sector, the lack of investment capital for the electricity sector, and the growing concern for environmental hazards including global climate change, the Office of Energy promotes energy efficiency, the role of private power and other supply options to ensure sustainable development. In view of these objectives, the report examines the rationale for load management in the electricity sector and summarizes the positive U.S. experience with these techniques. Additionally, it recommends a strategy for achieving energy efficiency via load management. Lastly, it recommends to A.I.D. a method for identifying priority Agency-assisted countries as candidates for load management assistance.

  18. Towards a Personal Health Management Assistant.

    PubMed

    Ferguson, G; Quinn, J; Horwitz, C; Swift, M; Allen, J; Galescu, L

    2010-10-01

    We describe design and prototyping efforts for a Personal Health Management Assistant for heart failure patients as part of Project HealthDesign. An assistant is more than simply an application. An assistant understands what its users need to do, interacts naturally with them, reacts to what they say and do, and is proactive in helping them manage their health. In this project, we focused on heart failure, which is not only a prevalent and economically significant disease, but also one that is very amenable to self-care. Working with patients, and building on our prior experience with conversational assistants, we designed and developed a prototype system that helps heart failure patients record objective and subjective observations using spoken natural language conversation. Our experience suggests that it is feasible to build such systems and that patients would use them. The system is designed to support rapid application to other self-care settings. PMID:20937478

  19. How To Give Your Instructional Assistants an A+ Training Program.

    ERIC Educational Resources Information Center

    Russell, Ronald; Rommel, Barbara

    This program is an effort of the David Douglas School District (Oregon) to provide specific training experiences for classified employees who assist with instruction. The program is intended to ease the training burden on teachers, provide district wide continuity of training experiences, and communicate the importance of the assistant's job…

  20. Petroleum Supply Monthly, August 1990

    SciTech Connect

    Not Available

    1990-10-30

    The Petroleum Supply Monthly (PSM) is one of a family of three publications produced by the Petroleum Supply Division within the Energy Information administration (EIA) reflecting different levels of data timeliness and completeness. The other two publications are the Weekly Petroleum Status Report (WPSR) and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) district movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in Primary Supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections (1) the Summary Statistics and (2) the Detailed Statistics.

  1. Petroleum supply monthly, June 1994

    SciTech Connect

    Not Available

    1994-06-28

    The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.

  2. Petroleum supply monthly, May 1994

    SciTech Connect

    Not Available

    1994-05-27

    The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum supply annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.

  3. Petroleum supply monthly, September 1991

    SciTech Connect

    Not Available

    1991-09-30

    The Petroleum Supply Monthly (PSM) is one of a family of three publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other two publications are the Weekly Petroleum Status Report (WPSR) and the Petroleum Supply Annual (PSA). Data presented in PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administrations for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 states and the District of Columbia). The reporting universe includes those petroleum sectors in Primary Supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections (1) the Summary Statistics and (2) the Detailed Statistics. 65 tabs.

  4. Petroleum supply monthly, July 1994

    SciTech Connect

    Not Available

    1994-07-26

    The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.

  5. Petroleum supply monthly, October 1993

    SciTech Connect

    Not Available

    1993-10-26

    The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.

  6. Petroleum supply monthly, January 1996

    SciTech Connect

    1996-02-15

    The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.

  7. Laser-assisted solar cell metallization processing

    NASA Technical Reports Server (NTRS)

    Dutta, S.

    1984-01-01

    Laser assisted processing techniques utilized to produce the fine line, thin metal grid structures that are required to fabricate high efficiency solar cells are investigated. The tasks comprising these investigations are summarized. Metal deposition experiments are carried out utilizing laser assisted pyrolysis of a variety of metal bearing polymer films and metalloorganic inks spun onto silicon substrates. Laser decomposition of spun on silver neodecanoate ink yields very promising results. Solar cell comb metallization patterns are written using this technique.

  8. AGS Fast spin resonance jump, magnets and power supplies

    SciTech Connect

    Glenn,J.W.; Huang, H.; Liaw, C. J.; Marneris, I.; Meng, W.; Mi, J. L.; Rosas, P.; Sandberg, J.; Tuozzolo, J.; Zhang, A.

    2009-05-04

    In order to cross more rapidly the 82 weak spin resonances caused by the horizontal tune and the partial snakes, we plan to jump the horizontal tune 82 times during the acceleration of polarized protons. The current in the magnets creating this tune jump will rise in 100 {micro}s, hold flat for about 4 ms and fan to zero in 100 {micro}s. Laminated beam transport quadrupole magnets have been recycled by installing new two turn coils and longitudinal laminated pole tip shims that reduce inductance and power supply current. The power supply uses a high voltage capacitor discharge to raise the magnet current, which is then switched to a low voltage supply, and then the current is switched back to the high voltage capacitor to zero the current. The current in each of the magnet pulses must match the order of magnitude change in proton momentum during the acceleration cycle. The magnet, power supply and operational experience are described.

  9. Petroleum supply monthly, August 1994

    SciTech Connect

    Not Available

    1994-08-26

    Data presented in the Petroleum Supply Monthly (PSM) describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.

  10. International Oil Supplies and Demands

    SciTech Connect

    Not Available

    1991-09-01

    The eleventh Energy Modeling Forum (EMF) working group met four times over the 1989--90 period to compare alternative perspectives on international oil supplies and demands through 2010 and to discuss how alternative supply and demand trends influence the world's dependence upon Middle Eastern oil. Proprietors of eleven economic models of the world oil market used their respective models to simulate a dozen scenarios using standardized assumptions. From its inception, the study was not designed to focus on the short-run impacts of disruptions on oil markets. Nor did the working group attempt to provide a forecast or just a single view of the likely future path for oil prices. The model results guided the group's thinking about many important longer-run market relationships and helped to identify differences of opinion about future oil supplies, demands, and dependence.

  11. International Oil Supplies and Demands

    SciTech Connect

    Not Available

    1992-04-01

    The eleventh Energy Modeling Forum (EMF) working group met four times over the 1989--1990 period to compare alternative perspectives on international oil supplies and demands through 2010 and to discuss how alternative supply and demand trends influence the world's dependence upon Middle Eastern oil. Proprietors of eleven economic models of the world oil market used their respective models to simulate a dozen scenarios using standardized assumptions. From its inception, the study was not designed to focus on the short-run impacts of disruptions on oil markets. Nor did the working group attempt to provide a forecast or just a single view of the likely future path for oil prices. The model results guided the group's thinking about many important longer-run market relationships and helped to identify differences of opinion about future oil supplies, demands, and dependence.

  12. Petroleum supply monthly, July 1993

    SciTech Connect

    Not Available

    1993-07-29

    Data presented in the Petroleum Supply Monthly (PSM) describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: Petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States.

  13. Effect of haptic assistance on learning vehicle reverse parking skills.

    PubMed

    Hirokawa, Masakazu; Uesugi, Naohisa; Furugori, Satoru; Kitagawa, Tomoko; Suzuki, Kenji

    2014-01-01

    Compared to conventional visual- and auditory-based assisted driving technologies, haptic modality promises to be more effective and less disturbing assistance to the driver. However, in most previous studies, haptic assistance systems were evaluated from safety and stability viewpoints. Moreover, the effect of haptic assistance on human driving behavior has not been sufficiently discussed. In this paper, we introduce an assisted driving method based on haptic assistance for driver training in reverse parking, which is considered as an uncertain factor in conventional assisted driving systems. The proposed system assists the driver by applying a torque on the steering wheel to guide proper and well-timed steering. To design the appropriate assistance method, we conducted a measurement experiment to determine the qualitative reverse parking driver characteristics. Based on the determined characteristics, we propose a haptic assistance calculation method that utilizes the receding horizon control algorithm. For a simulation environment to assess the proposed assistance method, we also developed a scaled car simulator comprising a 1/10 scaled robot car and an omnidirectional camera. We used the scaled car simulator to conduct comparative experiments on subjects, and observed that the driving skills of the assisted subjects were significantly better than those of the control subjects. PMID:25248216

  14. Leading a supply chain turnaround.

    PubMed

    Slone, Reuben E

    2004-10-01

    Just five years ago, salespeople at Whirlpool were in the habit of referring to their supply chain organization as the "sales disablers." Now the company excels at getting products to the right place at the right time--while managing to keep inventories low. How did that happen? In this first-person account, Reuben Slone, Whirlpool's vice president of Global Supply Chain, describes how he and his colleagues devised the right supply chain strategy, sold it internally, and implemented it. Slone insisted that the right focal point for the strategy was the satisfaction of consumers at the end of the supply chain. Most supply chain initiatives do the opposite: They start with the realities of a company's manufacturing base and proceed from there. Through a series of interviews with trade customers large and small, his team identified 27 different capabilities that drove industry perceptions of Whirlpool's performance. Knowing it was infeasible to aim for world-class performance across all of them, Slone weighed the costs of excelling at each and found the combination of initiatives that would provide overall competitive advantage. A highly disciplined project management office and broad training in project management were key to keeping work on budget and on benefit. Slone set an intense pace--three "releases" of new capabilities every month--that the group maintains to this day. Lest this seem like a technology story, however, Slone insists it is just as much a "talent renaissance." People are proud today to be part of Whirlpool's supply chain organization, and its new generation of talent will give the company a competitive advantage for years to come. PMID:15559580

  15. Sediment Supply as a Control on Plant-Morphodynamic Interactions

    NASA Astrophysics Data System (ADS)

    Manners, R.; Wilcox, A. C.; Kui, L.; Stella, J. C.; Lightbody, A.; Sklar, L. S.

    2014-12-01

    The caliber and quantity of sediment delivered to a channel influences its size and shape, yet we know little about how the sediment supply affects rivers whose geomorphic form is influenced by riparian vegetation. We present results from flume experiments that test the impact of sediment supply on plant-morphodynamic interactions. We introduced two sediment supply conditions to a 28-meter long, sand bedded flume (60 cm wide and 71 cm deep) at the UC-Berkeley Richmond Field Station: equilibrium (balance between sediment transport and supply) and deficit (transport exceeds sediment supply). We conducted ten runs with different riparian seedling configurations (individual plants or patches) and species (tamarisk or cottonwood), and stem and leaf density (0.003-0.47 cm2/cm2), under both sediment supply conditions. Plant species, size, and configuration were important in predicting the topographic adjustments that occurred during our experiments. These influences may be attributed to differences in plant morphology; tamarisk is shrubby while cottonwood is more tree-like, with a single stem and leaves concentrated higher on the plant. The plant-morphodynamic relationship, however, differed for the two sediment supply conditions. During sediment equilibrium, only patches of cottonwood served as sediment sinks compared to an unvegetated bed, but tamarisk patches had no impact on the sediment mass balance. During sediment deficit, in contrast, tamarisk patches accumulated more sediment than unvegetated beds. Stem and leaf density also controlled changes in bed elevation. During equilibrium conditions, increasing the density of cottonwood stems and leaves resulted in greater bed degradation. Conversely, aggradation occurred with increases in the density of tamarisk. For sediment deficit conditions, the relationship between stem and leaf density and the rate of bed change was negative for both species (i.e., higher density resulted in faster rate of scour). The shifting

  16. US energy consumption and supply

    NASA Astrophysics Data System (ADS)

    Vanatta, C. M.

    1981-01-01

    Energy consumption and cost in 1978 and 1979 are discussed with emphasis on the effect of imported oil on the economy of the United States. Some of the international aspects of energy supply are described, and actions to meet the probability of a cutoff of oil imports from the Persian Gulf area are suggested. Short and long range strategies for ensuring energy self sufficiency are discussed. A rationale for major, long range dependence on fission and fusion power is given, and the possible advantages of a nearly all electric energy system are mentioned. Projection of energy consumption and supply to the year 2020 based upon economic and demographic models is discussed.

  17. Air supply distributor for fireplaces

    SciTech Connect

    Eberhardt, H.A.

    1984-09-18

    An air supply distributor for fireplaces having an opening in the hearth for the supply of relatively cold air is used in combination with means, such as a log holder or grate, for supporting combustible products and comprises a pair of side walls and a top cover. The distributor is adapted to be positioned under the log holder or grate to overlie the hearth opening so that relatively cold air passing through the hearth opening is directed toward the front opening of the fireplace from which it passes to the fire for supporting combustion thereof thereby minimizing the amount of air drawn from the room.

  18. Petroleum supply monthly, January 1994

    SciTech Connect

    Not Available

    1994-01-01

    Data presented describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States. The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States.

  19. 41 CFR 109-27.5106-5 - Assistance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Assistance. 109-27.5106-5 Section 109-27.5106-5 Public Contracts and Property Management Federal Property Management Regulations System (Continued) DEPARTMENT OF ENERGY PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT...

  20. 42 CFR 21.42 - Examinations; junior assistant, assistant, or senior assistant grade.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... senior assistant grade. 21.42 Section 21.42 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND..., assistant, or senior assistant grade. The examination for appointment to the junior assistant, assistant, or senior assistant grade in the Regular Corps shall consist of (a) a written professional...