Science.gov

Sample records for portable power emerging

  1. Emerging Power/Energy Technologies for Portable Electronics for SOCOM

    DTIC Science & Technology

    2008-02-29

    The same is true of portable engines (e.g. Stirling ), and their lower “technology readiness level” can explain inconsistencies between tests. The...thus should be adopted should it meet military standards. Many different types of fuel cell systems are in development for 20 W operation, but, as...energy management for each soldier and operator. • Many different types of fuel cell systems are in development, and many show significant weight

  2. Compact portable electric power sources

    SciTech Connect

    Fry, D.N.; Holcomb, D.E.; Munro, J.K.; Oakes, L.C.; Matson, M.J.

    1997-02-01

    This report provides an overview of recent advances in portable electric power source (PEPS) technology and an assessment of emerging PEPS technologies that may meet US Special Operations Command`s (SOCOM) needs in the next 1--2- and 3--5-year time frames. The assessment was performed through a literature search and interviews with experts in various laboratories and companies. Nineteen PEPS technologies were reviewed and characterized as (1) PEPSs that meet SOCOM requirements; (2) PEPSs that could fulfill requirements for special field conditions and locations; (3) potentially high-payoff sources that require additional R and D; and (4) sources unlikely to meet present SOCOM requirements. 6 figs., 10 tabs.

  3. Portable instruments for emergency response

    NASA Astrophysics Data System (ADS)

    Swinth, K. L.

    1985-05-01

    The selection and use of instruments for emergency response is complicated by lack of specific guidance, the diversity of potential conditions, and the variable performance of available instruments. The user must examine the projected radiological conditions during an accident and the environmental extremes that could exist. This should assist in determining requirements that the instruments must meet during an emergency. Due to the variable performance of available instrumentation, critical parameters (temperature dependence) should be tested prior to use to assure adequate measurements. Although it is tempting to stock emergency kits with inexpensive monitoring equipment, one should carefully consider the possible conditions (environmental, radiological) and equipment performance since inaccurate measurements could be very costly in terms of decisions regarding lifesaving and evacuation during an emergency.

  4. Portable Power And Digital-Communication Units

    NASA Technical Reports Server (NTRS)

    Levin, Richard R.; Henry, Paul K.; Rosenberg, Leigh S.

    1992-01-01

    Conceptual network of electronic-equipment modules provides electrical power and digital radio communications at multiple sites not served by cables. System includes central communication unit and portable units powered by solar photovoltaic arrays. Useful to serve equipment that must be set up quickly at remote sites or buildings that cannot be modified to provide cable connections.

  5. Portable Water-Saving Shower For Emergencies

    NASA Technical Reports Server (NTRS)

    Grenier, Francis E.

    1991-01-01

    Stowable compact unit sprays from many directions. Proposed portable emergency fogging shower rinses harmful chemicals from person. Includes double-walled transparent, approximately cylindrical curtain containing sets of interior nozzles on regularly spaced loops. Sealed at top and bottom. Victim of contamination enters through longitudinal zippered opening. Pressurized mixture of air and water flows through selected nozzles, creating foglike spray scrubbing contaminants from skin and clothing. Intended for use on Space Station, also used in laboratories and factories on Earth, or for routine shower bathing in areas with limited water supplies.

  6. Experimental evaluation of a portable powered ankle-foot orthosis.

    PubMed

    Shorter, Kenneth A; Li, Yifan; Morris, Emily A; Kogler, Géza F; Hsiao-Wecksler, Elizabeth T

    2011-01-01

    Ankle-foot orthoses (AFOs) ameliorate the impact of impairments to the lower limb neuromuscular motor system that affect gait. Emerging technologies provide a vision for fully powered, untethered AFOs. The portable powered AFO (PPAFO) provides both plantarflexor and dorsiflexor torque assistance via a bi-directional pneumatic rotary actuator. The system uses a portable pneumatic power source (bottle of compressed CO(2)) and embedded electronics to control foot motion during level walking. Experimental data were collected to demonstrate functionality from two subjects with bilateral impairments to the lower legs. These data demonstrated the PPAFO's ability to provide functional assistance during gait. The stringent design requirements of light weight, small size, high efficiency and low noise make the creation of daily wear assist devices challenging; but once such devices appear, they will present new opportunities for clinical treatment of gait abnormalities.

  7. Portable Television for Recording Emergency Treatment - Phase II

    ERIC Educational Resources Information Center

    Howze, William C.; Audette, Louis G.

    1970-01-01

    Describes a study conducted jointly by the Yale University School of Medicine and the City of New Haven on the uses of portable television for the evaluation and improvement of emergency first aid services." (Author/AA)

  8. Design of a portable powered seat lift

    NASA Technical Reports Server (NTRS)

    Weddendorf, Bruce

    1993-01-01

    People suffering from degenerative hip or knee joints find sitting and rising from a seated position very difficult. These people can rely on large stationary chairs at home, but must ask others for assistance when rising from any other chair. An orthopedic surgeon identified to the MSFC Technology Utilization Office the need for development of a portable device that could perform a similar function to the stationary lift chairs. The MSFC Structural Development Branch answered the Technology Utilization Office's request for design of a portable powered seat lift. The device is a seat cushion that opens under power, lifting the user to near-standing positions. The largest challenge was developing a mechanism to provide a stable lift over the large range of motion needed, and fold flat enough to be comfortable to sit on. CAD 3-D modeling was used to generate complete drawings for the prototype, and a full-scale working model of the Seat lift was made based on the drawings. The working model is of low strength, but proves the function of the mechanism and the concept.

  9. Power Saving Control for Battery-Powered Portable WLAN APs

    NASA Astrophysics Data System (ADS)

    Ogawa, Masakatsu; Hiraguri, Takefumi

    This paper proposes a power saving control function for battery-powered portable wireless LAN (WLAN) access points (APs) to extend the battery life. The IEEE802.11 standard does not support power saving control for APs. To enable a sleep state for an AP, the AP forces the stations (STAs) to refrain from transmitting frames using the network allocation vector (NAV) while the AP is sleeping. Thus the sleep state for the AP can be employed without causing frame loss at the STAs. Numerical analysis and computer simulation reveal that the newly proposed control technique conserves power compared to the conventional control.

  10. Portable thermo-photovoltaic power source

    DOEpatents

    Zuppero, Anthony C.; Krawetz, Barton; Barklund, C. Rodger; Seifert, Gary D.

    1997-01-14

    A miniature thermo-photovoltaic (TPV) device for generation of electrical power for use in portable electronic devices. A TPV power source is constructed to provide a heat source chemical reactor capable of using various fuels, such as liquid hydrocarbons, including but not limited to propane, LPG, butane, alcohols, oils and diesel fuels to generate a source of photons. A reflector dish guides misdirected photon energy from the photon source toward a photovoltaic array. A thin transparent protector sheet is disposed between the photon source and the array to reflect back thermal energy that cannot be converted to electricity, and protect the array from thermal damage. A microlens disposed between the protector sheet and the array further focuses the tailored band of photon energy from the photon source onto an array of photovoltaic cells, whereby the photon energy is converted to electrical power. A heat recuperator removes thermal energy from reactor chamber exhaust gases, preferably using mini- or micro-bellows to force air and fuel past the exhaust gases, and uses the energy to preheat the fuel and oxidant before it reaches the reactor, increasing system efficiency. Mini- or micro-bellows force ambient air through the system both to supply oxidant and to provide cooling. Finally, an insulator, which is preferably a super insulator, is disposed around the TPV power source to reduce fuel consumption, and to keep the TPV power source cool to the touch so it can be used in hand-held devices.

  11. Portable wireless power transmission system for video capsule endoscopy.

    PubMed

    Zhiwei, Jia; Guozheng, Yan; Bingquan, Zhu

    2014-10-01

    Wireless power transmission is considered a practical way of overcoming the power shortage of wireless capsule endoscopy (VCE). However, most patients cannot tolerate the long hours of lying in a fixed transmitting coil during diagnosis. To develop a portable wireless power transmission system for VCE, a compact transmitting coil and a portable inverter circuit driven by rechargeable batteries are proposed. The couple coils, optimized considering the stability and safety conditions, are 28 turns of transmitting coil and six strands of receiving coil. The driven circuit is designed according to the portable principle. Experiments show that the integrated system could continuously supply power to a dual-head VCE for more than 8 h at a frame rate of 30 frames per second with resolution of 320 × 240. The portable VCE exhibits potential for clinical applications, but requires further improvement and tests.

  12. Portable Neutron Sensors for Emergency Response Operations

    SciTech Connect

    ,

    2012-06-24

    This article presents the experimental work performed in the area of neutron detector development at the Remote Sensing Laboratory–Andrews Operations (RSL-AO) sponsored by the U.S. Department of Energy, National Nuclear Security Administration (NNSA) in the last four years. During the 1950s neutron detectors were developed mostly to characterize nuclear reactors where the neutron flux is high. Due to the indirect nature of neutron detection via interaction with other particles, neutron counting and neutron energy measurements have never been as precise as gamma-ray counting measurements and gamma-ray spectroscopy. This indirect nature is intrinsic to all neutron measurement endeavors (except perhaps for neutron spin-related experiments, viz. neutron spin-echo measurements where one obtains μeV energy resolution). In emergency response situations generally the count rates are low, and neutrons may be scattered around in inhomogeneous intervening materials. It is also true that neutron sensors are most efficient for the lowest energy neutrons, so it is not as easy to detect and count energetic neutrons. Most of the emergency response neutron detectors are offshoots of nuclear device diagnostics tools and special nuclear materials characterization equipment, because that is what is available commercially. These instruments mostly are laboratory equipment, and not field-deployable gear suited for mobile teams. Our goal is to design and prototype field-deployable, ruggedized, lightweight, efficient neutron detectors.

  13. Electrical power systems (Colombia). Portable/stationary electrical power generators, April 1992. Export trade information

    SciTech Connect

    Not Available

    1992-04-01

    The Colombian electric power sector is confronting a critical situation due to poor planning and administration, labor problems, a very high foreign debt, lack of maintenance of the thermoelectric generation system, and a longer than expected nation wide drought. The unusual circumstances which Colombia is facing have sparked an extraordinary demand for portable and stationary electric power generation sets of all types (mainly gasoline and diesel) and emergency lighting systems. Imports of this type of equipment are expected to increase by 150 percent in 1992 in relation to the US $36.9 million imported in 1991.

  14. Portable Power Generation via Integrated Catalytic Microcombustion-Thermoelectric Devices

    DTIC Science & Technology

    2004-12-01

    PORTABLE POWER GENERATION VIA INTEGRATED CATALYTIC MICROCOMBUSTION-THERMOELECTRIC DEVICES D. G. Norton, K. W. Voit, T. Brüggemann, and D. G...resulting in electrical power generation from catalytic microcombustion with a thermal efficiency of ~1%. 1. INTRODUCTION Advances in soldier...environmental burdens. Power generation utilizing hydrocarbons offers a promising alternative to traditional batteries. The energy density of

  15. A portable wireless power transmission system for video capsule endoscopes.

    PubMed

    Shi, Yu; Yan, Guozheng; Zhu, Bingquan; Liu, Gang

    2015-01-01

    Wireless power transmission (WPT) technology can solve the energy shortage problem of the video capsule endoscope (VCE) powered by button batteries, but the fixed platform limited its clinical application. This paper presents a portable WPT system for VCE. Besides portability, power transfer efficiency and stability are considered as the main indexes of optimization design of the system, which consists of the transmitting coil structure, portable control box, operating frequency, magnetic core and winding of receiving coil. Upon the above principles, the correlation parameters are measured, compared and chosen. Finally, through experiments on the platform, the methods are tested and evaluated. In the gastrointestinal tract of small pig, the VCE is supplied with sufficient energy by the WPT system, and the energy conversion efficiency is 2.8%. The video obtained is clear with a resolution of 320×240 and a frame rate of 30 frames per second. The experiments verify the feasibility of design scheme, and further improvement direction is discussed.

  16. Electric power emergency handbook

    SciTech Connect

    Labadie, J.R.

    1980-09-01

    The Emergency Electric Power Administration's Emergency Operations Handbook is designed to provide guidance to the EEPA organization. It defines responsibilities and describes actions performed by the government and electric utilities in planning for, and in operations during, national emergencies. The EEPA Handbook is reissued periodically to describe organizational changes, to assign new duties and responsibilities, and to clarify the responsibilities of the government to direct and coordinate the operations of the electric utility industry under emergencies declared by the President. This Handbook is consistent with the assumptions, policies, and procedures contained in the National Plan for Emergency Preparedness. Claimancy and restoration, communications and warning, and effects of nuclear weapons are subjects covered in the appendices.

  17. Polymer electrolyte fuel cell mini power unit for portable application

    NASA Astrophysics Data System (ADS)

    Urbani, F.; Squadrito, G.; Barbera, O.; Giacoppo, G.; Passalacqua, E.; Zerbinati, O.

    This paper describes the design, realisation and test of a power unit based on a polymer electrolyte fuel cell, operating at room temperature, for portable application. The device is composed of an home made air breathing fuel cell stack, a metal hydride tank for H 2 supply, a dc-dc converter for power output control and a fan for stack cooling. The stack is composed by 10 cells with an active surface of 25 cm 2 and produces a rated power of 15 W at 6 V and 2 A. The stack successfully runs with end-off fed hydrogen without appreciable performance degradation during the time. The final assembled system is able to generate 12 W at 9.5 V, and power a portable DVD player for 3 h in continuous. The power unit has collected about 100 h of operation without maintenance.

  18. 29 CFR 1910.243 - Guarding of portable powered tools.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... circular saws. (i) All portable, power-driven circular saws having a blade diameter greater than 2 in... saw to the depth of the teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower guard shall cover the saw to the depth of the teeth, except for the minimum...

  19. 29 CFR 1910.243 - Guarding of portable powered tools.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... circular saws. (i) All portable, power-driven circular saws having a blade diameter greater than 2 in... saw to the depth of the teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower guard shall cover the saw to the depth of the teeth, except for the minimum...

  20. Fuel cell systems for personal and portable power applications

    SciTech Connect

    Fateen, S. A.

    2001-01-01

    Fuel cells are devices that electrochemically convert fuel, usually hydrogen gas, to directly produce electricity. Fuel cells were initially developed for use in the space program to provide electricity and drinking water for astronauts. Fuel cells are under development for use in the automobile industry to power cars and buses with the advantage of lower emissions and higher efficiency than internal combustion engines. Fuel cells also have great potential to be used in portable consumer products like cellular phones and laptop computers, as well as military applications. In fact, any products that use batteries can be powered by fuel cells. In this project, we examine fuel cell system trade-offs between fuel cell type and energy storage/hydrogen production for portable power generation. The types of fuel cells being examined include stored hydrogen PEM (polymer electrolyte), direct methanol fuel cells (DMFC) and indirect methanol fuel cells, where methanol is reformed producing hydrogen. These fuel cells systems can operate at or near ambient conditions, which make them potentially optimal for use in manned personal power applications. The expected power production for these systems is in the range of milliwatts to 500 watts of electrical power for either personal or soldier field use. The fuel cell system trade-offs examine hydrogen storage by metal hydrides, carbon nanotubes, and compressed hydrogen tanks. We examine the weights each system, volume, fuel storage, system costs, system peripherals, power output, and fuel cell feasibility in portable devices.

  1. National Emergency Powers

    DTIC Science & Technology

    2007-11-02

    Virginia, and the Carolinas began forcefully opposing the collection of a federal excise tax on whiskey . Anticipating rebellious activity, Congress...On August 17, 1794 , President Washington issued such a proclamation. The insurgency continued. The President then took command of the forces...organized to put down the rebellion .18 Here was the beginning of a pattern of policy expression and implementation regarding emergency powers. Congress

  2. A portable high power microwave source with permanent magnets

    SciTech Connect

    Li, Wei; Zhang, Jun; Li, Zhi-qiang; Yang, Jian-Hua

    2016-06-15

    A high power microwave source with permanent magnets is proposed in this paper. The source has the length 330 mm, maximum diameter 350 mm, and total weight 50 kg, including 25 kg of permanent magnets. 1 GW of microwave power with Gaussian radiation pattern and 24% of microwave power generation efficiency in a pulse duration of 75 ns are obtained in the experiment. Operating frequency of the source is 2.32 GHz. Such a small size, light weight, and highly stable in operation source will be used in portable repetitive high power microwave generation systems.

  3. 29 CFR 1910.242 - Hand and portable powered tools and equipment, general.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 5 2010-07-01 2010-07-01 false Hand and portable powered tools and equipment, general... HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other Hand-Held Equipment § 1910.242 Hand and portable powered tools and equipment...

  4. 29 CFR 1910.242 - Hand and portable powered tools and equipment, general.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 5 2013-07-01 2013-07-01 false Hand and portable powered tools and equipment, general... HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other Hand-Held Equipment § 1910.242 Hand and portable powered tools and equipment...

  5. 29 CFR 1910.242 - Hand and portable powered tools and equipment, general.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 5 2012-07-01 2012-07-01 false Hand and portable powered tools and equipment, general... HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other Hand-Held Equipment § 1910.242 Hand and portable powered tools and equipment...

  6. 29 CFR 1910.242 - Hand and portable powered tools and equipment, general.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 5 2014-07-01 2014-07-01 false Hand and portable powered tools and equipment, general... HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other Hand-Held Equipment § 1910.242 Hand and portable powered tools and equipment...

  7. 29 CFR 1910.242 - Hand and portable powered tools and equipment, general.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 5 2011-07-01 2011-07-01 false Hand and portable powered tools and equipment, general... HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other Hand-Held Equipment § 1910.242 Hand and portable powered tools and equipment...

  8. Fuel Cells for Portable Power: 1. Introduction to DMFCs; 2. Advanced Materials and Concepts for Portable Power Fuel Cells

    SciTech Connect

    Zelenay, Piotr

    2012-07-16

    Thanks to generally less stringent cost constraints, portable power fuel cells, the direct methanol fuel cell (DMFC) in particular, promise earlier market penetration than higher power polymer electrolyte fuel cells (PEFCs) for the automotive and stationary applications. However, a large-scale commercialization of DMFC-based power systems beyond niche applications already targeted by developers will depend on improvements to fuel cell performance and performance durability as well as on the reduction in cost, especially of the portable systems on the higher end of the power spectrum (100-250 W). In this part of the webinar, we will focus on the development of advanced materials (catalysts, membranes, electrode structures, and membrane electrode assemblies) and fuel cell operating concepts capable of fulfilling two key targets for portable power systems: the system cost of $5/W and overall fuel conversion efficiency of 2.0-2.5 kWh/L. Presented research will concentrate on the development of new methanol oxidation catalysts, hydrocarbon membranes with reduced methanol crossover, and improvements to component durability. Time permitted, we will also present a few highlights from the development of electrocatalysts for the oxidation of two alternative fuels for the direct-feed fuel cells: ethanol and dimethyl ether.

  9. A portable powered ankle-foot orthosis for rehabilitation.

    PubMed

    Shorter, K Alex; Kogler, Géza F; Loth, Eric; Durfee, William K; Hsiao-Wecksler, Elizabeth T

    2011-01-01

    Innovative technological advancements in the field of orthotics, such as portable powered orthotic systems, could create new treatment modalities to improve the functional out come of rehabilitation. In this article, we present a novel portable powered ankle-foot orthosis (PPAFO) to provide untethered assistance during gait. The PPAFO provides both plantar flexor and dorsiflexor torque assistance by way of a bidirectional pneumatic rotary actuator. The system uses a portable pneumatic power source (compressed carbon dioxide bottle) and embedded electronics to control the actuation of the foot. We collected pilot experimental data from one impaired and three nondisabled subjects to demonstrate design functionality. The impaired subject had bilateral impairment of the lower legs due to cauda equina syndrome. We found that data from nondisabled walkers demonstrated the PPAFO's capability to provide correctly timed plantar flexor and dorsiflexor assistance during gait. Reduced activation of the tibialis anterior during stance and swing was also seen during assisted nondisabled walking trials. An increase in the vertical ground reaction force during the second half of stance was present during assisted trials for the impaired subject. Data from nondisabled walkers demonstrated functionality, and data from an impaired walker demonstrated the ability to provide functional plantar flexor assistance.

  10. Portable power supply for continuous mechanical ventilation during intrahospital transport of critically ill patients with ARDS.

    PubMed

    Barton, A C; Tuttle-Newhall, J E; Szalados, J E

    1997-08-01

    Patients with respiratory failure and poor pulmonary compliance requiring high levels of positive pressure ventilation are at high risk during intrahospital transportation. Most ICU ventilators currently do not have a built-in power supply. Manual bag-valve ventilation frequently is used but often without optimum mean airway pressures or minute ventilation guarantees. Transport ventilators also are limited in their ability to provide high positive end-expiratory pressure, variable inspiratory-expiratory ratios, or pressure-controlled ventilation. The 3M SARNS HELP (Hospital Emergency Limited Power) 115, a portable battery, provides continuous power to ICU ventilators and eliminates ventilator circuit interruption for the critical period of patient transportation.

  11. Work-related electrocutions involving portable power tools and appliances.

    PubMed

    Suruda, A; Smith, L

    1992-09-01

    Portable power tools and appliances can be identified as the source of injury in approximately 9% of occupational electrocutions. A search of fatality records for 1984 through 1986 in National Institute for Occupational Safety and Health (NIOSH) and Occupational Safety and Health Administration (OSHA) data bases identified 102 electrocutions involving portable appliances and tools that used 110-volt AC and 33 deaths involving welding equipment, which usually operates on 220-volt AC or higher. Of these 102 deaths, 51 occurred in the construction industry, 13 in services, 13 in manufacturing, and 25 in other industries. Plumbing contractors (Standard Industrial Classification [SIC] 1711) had the largest number of deaths (15) in construction. Powered hand-tools were involved in 58 deaths, with electric drills (23) and saws (13) the two largest classes. Proper provision of ground-fault circuit interrupter protection, particularly at temporary work sites, could have prevented most of the deaths from 110-volt AC. Engineering controls for preventing electrocution from portable arc-welding equipment should be evaluated.

  12. Development of a heavy duty portable variable power supply (HPVPS)

    NASA Astrophysics Data System (ADS)

    Musa, Ahmad Zulfadli Bin; Lung, Chong Man; Abidin, Wan'Amirah Basyarah Binti Zainol

    2017-08-01

    This paper covers the innovation of a Heavy Duty Portable Variable Power Supply (HPVPS) in Jabatan Kejuruteraan Elektrik (JKE), Politeknik Mukah, Sarawak (PMU). This project consists of variable power supply which can vary the output from 1.2 V to 11.6V, AC pure wave inverter to convert DC to AC for the operation of low power home appliances and also used Li-on rechargeable batteries to store the electrical energy and additional feature that can be used to jump-start the batteries of the car. The main objective of this project is to make the user can operate the electronic devices anywhere whenever if no electricity while doing their lab activities. Most of the regulated power supply in JKE lab aged 9-10 years old and need periodical maintenance and need cost and also the unit can be used is not enough to support the whole class during lab activities. As a result, the P&P process will be facing the major problem in order to make the lab activities running smoothly. By development of the portable variable power supply, the P&P process is more efficient and very helpful.

  13. A portable power system using PEM fuel cells

    SciTech Connect

    Long, E.

    1997-12-31

    Ball has developed a proof-of-concept, small, lightweight, portable power system. The power system uses a proton exchange membrane (PEM) fuel cell stack, stored hydrogen, and atmospheric oxygen as the oxidant to generate electrical power. Electronics monitor the system performance to control cooling air and oxidant flow, and automatically do corrective measures to maintain performance. With the controller monitoring the system health, the system can operate in an ambient environment from 0 C to +50 C. The paper describes system testing, including load testing, thermal and humidity testing, vibration and shock testing, field testing, destructive testing of high-pressure gas tanks, and test results on the fuel cell power system, metal hydride hydrogen storage, high-pressure hydrogen gas storage, and chemical hydride hydrogen storage.

  14. Portable triboelectric based wind energy harvester for low power applications

    NASA Astrophysics Data System (ADS)

    Azad, Puneet; Vaish, Rahul

    2017-06-01

    This article presents conversion of rotational motion into electrical energy using triboelectricity. For this purpose, aluminium and fluorinated ethylene propylene (FEP) films are selected for generating charges during rotational motion. Energy density and power are computed by optimizing various resistors and capacitors. The maximum energy density is found to be 2560 μJ/cm3 across 33 μF. The maximum power is found to be 6.5 μW across 1 MΩ resistor after 400 s. With the availability of such commercially available materials, it is possible to generate a lot of energy, which depends on the size of the system and type of materials. Such portable systems can be used for harvesting wind energy for low power electronic devices.

  15. Analysis of heat transfer in portable power supply

    NASA Astrophysics Data System (ADS)

    Abdullah, Mohd Azman; Ali, Ahmad Nazrin

    2016-03-01

    Portable power supply (PPS) is developed based on the necessity in supplying instant power to support domestic appliances during power shortage or in remote area. In this paper, the heat transfer inside the PPS is analyzed and demonstrated by temperature change during battery charging and discharging. The computational fluid dynamic (CFD) model of the PPS battery and housing are developed. The heat flow inside the PPS is studied at different conditions of battery and air flows. The increment of the temperature inside the PPS could cause the PPS system to damage and unsafe. Few elements are manipulated for the study, such as battery positions, holedimensions and fan models in order toimprove the design of PPS. Experimental approach is also conducted to validate the temperature and heat transfer in the PPS.

  16. A portable approach for PIC on emerging architectures

    NASA Astrophysics Data System (ADS)

    Decyk, Viktor

    2016-03-01

    A portable approach for designing Particle-in-Cell (PIC) algorithms on emerging exascale computers, is based on the recognition that 3 distinct programming paradigms are needed. They are: low level vector (SIMD) processing, middle level shared memory parallel programing, and high level distributed memory programming. In addition, there is a memory hierarchy associated with each level. Such algorithms can be initially developed using vectorizing compilers, OpenMP, and MPI. This is the approach recommended by Intel for the Phi processor. These algorithms can then be translated and possibly specialized to other programming models and languages, as needed. For example, the vector processing and shared memory programming might be done with CUDA instead of vectorizing compilers and OpenMP, but generally the algorithm itself is not greatly changed. The UCLA PICKSC web site at http://www.idre.ucla.edu/ contains example open source skeleton codes (mini-apps) illustrating each of these three programming models, individually and in combination. Fortran2003 now supports abstract data types, and design patterns can be used to support a variety of implementations within the same code base. Fortran2003 also supports interoperability with C so that implementations in C languages are also easy to use. Finally, main codes can be translated into dynamic environments such as Python, while still taking advantage of high performing compiled languages. Parallel languages are still evolving with interesting developments in co-Array Fortran, UPC, and OpenACC, among others, and these can also be supported within the same software architecture. Work supported by NSF and DOE Grants.

  17. The use of solar energy for powering a portable autoclave.

    PubMed

    Dravid, M N; Chandak, A; Phute, S U; Khadse, R K; Adchitre, H R; Kulkarni, S D

    2012-04-01

    Climate change and the depletion of fossil fuels have forced the developed world to look for clean energy alternatives. Solar cooking is developing in Asian and African countries blessed with ample sun, but is still at an early stage. A portable autoclave was developed in India using this technology. The Prince-40 Concentrator provided adequate capacity to autoclave culture media and treat biomedical waste in a small laboratory set-up, and could save electricity worth Rs. 15,000 (188.10 GBP)/year or LPG worth Rs. 37,500 (470.25 GBP)/year. This technology would be of immense use in health centres in rural areas with frequent power cuts or no power supply. Copyright © 2012 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.

  18. Lithium Carbon Monofluoride: The Next Primary Chemistry for Soldier Portable Power Sources

    DTIC Science & Technology

    2006-11-01

    LITHIUM CARBON MONOFLUORIDE: THE NEXT PRIMARY CHEMISTRY FOR SOLDIER PORTABLE POWER SOURCES Arek Suszko RDECOM, CERDEC, Army Power Division...4. TITLE AND SUBTITLE Lithium Carbon Monofluoride: The Next Primary Chemistry For Soldier Portable Power Sources 5a. CONTRACT NUMBER 5b

  19. Portable self-contained solar powered water purifier

    SciTech Connect

    Sherman, M.

    1991-10-22

    This patent describes a portable self-contained solar powered water purifier. It comprises housing means for buoyantly supporting the purifier; solar cell means supported by the housing means above water to be treated; purification means depending from the housing means so as to be positioned in water to be treated and including sacrificial anode means providing ionized metallic ions for purifying the water and cathode means providing abstraction of electrons to facilitate the release of oxygen into the water; means for electrically connecting the solar cell means to the electrolytic purification means to enable the electrolytic purification means to purify water when the purifier is placed therein; and diode means for preventing reverse current flow between the anode means and cathode means.

  20. 500 Watt Diesel Fueled TPV Portable Power Supply

    NASA Astrophysics Data System (ADS)

    Horne, W. E.; Morgan, M. D.; Sundaram, V. S.; Butcher, T.

    2003-01-01

    A test-bed 500 watt diesel fueled thermophotovoltaic (TPV) portable power supply is described. The goal of the design is a compact, rugged field portable unit weighing less than 15 pounds without fuel. The conversion efficiency goal is set at 15% fuel energy to electric energy delivered to an external load at 24 volts. A burner/recuperator system has been developed to meet the objectives of high combustion air preheat temperatures with a compact heat exchanger, low excess air operation, and high convective heat transfer rates to the silicon carbide emitter surface. The burner incorporates a air blast atomizer with 100% of the combustion air passing through the nozzle. Designed firing rate of 2900 watts at 0.07 gallons of oil per hour. This incorporates a single air supply dc motor/fan set and avoids the need for a system air compressor. The recuperator consists of three annular, concentric laminar flow passages. Heat from the combustion of the diesel fuel is both radiantly and convectively coupled to the inside wall of a cylindrical silicon carbide emitter. The outer wall of the emitter then radiates blackbody energy at the design temperature of 1400°C. The cylindrical emitter is enclosed in a quartz envelope that separates it from the photovoltaic (PV) cells. Spectral control is accomplished by a resonant mesh IR band-pass filter placed between the emitter and the PV array. The narrow band of energy transmitted by the filter is intercepted and converted to electricity by an array of GaSb PV cells. The array consists of 216 1-cm × 1-cm GaSb cells arranged into series and parallel arrays. An array of heat pipes couple the PV cell arrays to a heat exchanger which is cooled by forced air convection. A brief status of the key TPV technologies is presented followed by data characterizing the performance of the 500 watt TPV system.

  1. Emerging Space Nuclear Power Needs

    NASA Technical Reports Server (NTRS)

    Redd, F. J.; Fornoles, E. V.

    1984-01-01

    Growing interest in new classes of military and civil space systems which demand substantial increases in power over current satellites is generating a renewed interest in space qualified nuclear power systems. Indeed, one can say that power is a limiting technology to the achievement of many future goals in space. The speed of nuclear power system development is currently limited by the lack of a clear distinct definition of system requirements. Emerging system requirements are discussed for the following fields: robust surveillance systems, survivable communication systems with anti-jam capabilities, electric propulsion systems, and weapons applications.

  2. Emerging Space Nuclear Power Needs

    NASA Technical Reports Server (NTRS)

    Redd, F. J.; Fornoles, E. V.

    1984-01-01

    Growing interest in new classes of military and civil space systems which demand substantial increases in power over current satellites is generating a renewed interest in space qualified nuclear power systems. Indeed, one can say that power is a limiting technology to the achievement of many future goals in space. The speed of nuclear power system development is currently limited by the lack of a clear distinct definition of system requirements. Emerging system requirements are discussed for the following fields: robust surveillance systems, survivable communication systems with anti-jam capabilities, electric propulsion systems, and weapons applications.

  3. 30 CFR 75.812 - Movement of high-voltage power centers and portable transformers; permit.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... portable transformers; permit. 75.812 Section 75.812 Mineral Resources MINE SAFETY AND HEALTH... transformers; permit. Power centers and portable transformers shall be deenergized before they are moved from... transformers is not available, the Secretary may permit such centers and transformers to be moved...

  4. 30 CFR 75.812 - Movement of high-voltage power centers and portable transformers; permit.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... portable transformers; permit. 75.812 Section 75.812 Mineral Resources MINE SAFETY AND HEALTH... transformers; permit. Power centers and portable transformers shall be deenergized before they are moved from... transformers is not available, the Secretary may permit such centers and transformers to be moved...

  5. 30 CFR 75.812 - Movement of high-voltage power centers and portable transformers; permit.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... portable transformers; permit. 75.812 Section 75.812 Mineral Resources MINE SAFETY AND HEALTH... transformers; permit. Power centers and portable transformers shall be deenergized before they are moved from... transformers is not available, the Secretary may permit such centers and transformers to be moved...

  6. 30 CFR 75.812 - Movement of high-voltage power centers and portable transformers; permit.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... portable transformers; permit. 75.812 Section 75.812 Mineral Resources MINE SAFETY AND HEALTH... transformers; permit. Power centers and portable transformers shall be deenergized before they are moved from... transformers is not available, the Secretary may permit such centers and transformers to be moved while...

  7. 30 CFR 75.812 - Movement of high-voltage power centers and portable transformers; permit.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... portable transformers; permit. 75.812 Section 75.812 Mineral Resources MINE SAFETY AND HEALTH... transformers; permit. Power centers and portable transformers shall be deenergized before they are moved from... transformers is not available, the Secretary may permit such centers and transformers to be moved while...

  8. Design of Instantaneous High Power Supply System with power distribution management for portable military devices

    NASA Astrophysics Data System (ADS)

    Kwak, Kiho; Kwak, Dongmin; Yoon, Joohong

    2015-08-01

    A design of an Instantaneous High Power Supply System (IHPSS) with a power distribution management (PDM) for portable military devices is newly addressed. The system includes a power board and a hybrid battery that can not only supply instantaneous high power but also maintain stable operation at critical low temperature (-30 °C). The power leakage and battery overcharge are effectively prevented by the optimal PDM. The performance of the proposed system under the required pulse loads and the operating conditions of a Korean Advanced Combat Rifle employed in the battlefield is modeled with simulations and verified experimentally. The system with the IHPSS charged the fuse setter with 1.7 times higher voltage (8.6 V) than the one without (5.4 V) under the pulse discharging rate (1 A at 0.5 duty, 1 ms) for 500 ms.

  9. Applications for Compact Portable Pulsed Power: Rocket Science, Cancer Therapy, and the Movies

    DTIC Science & Technology

    2006-05-01

    C. Brophy, J. Hoke, F. Schauer, J. Corrigan , J. Yu, E. Barbour, and R. K. Hanson, “Transient Plasma Ignition for Delay Reduction in Pulse Detonation...Applications for Compact Portable Pulsed Power: Rocket Science, Cancer Therapy, and the Movies Martin Gundersen University of Southern...research into Compact Portable Pulsed Power, and to toss out a few ideas, looking ahead. The MURI was led by USC, with collaborators from the U. Missouri

  10. Portable power tool machines weld joints in field

    NASA Technical Reports Server (NTRS)

    Spier, R. A.

    1966-01-01

    Portable routing machine for cutting precise weld joints required by nonstandard pipe sections used in the field for transfer of cryogenic fluids. This tool is adaptable for various sizes of pipes and has a selection of router bits for different joint configurations.

  11. 29 CFR 1910.243 - Guarding of portable powered tools.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... to which they are subjected. (c) Portable abrasive wheels—(1) General requirements. Abrasive wheels..., 11, 27, and 28 abrasive wheels, cutting off wheels, and tuck pointing wheels. (2) Cup wheels. Cup... abrasive wheels. (i) Immediately before mounting, all wheels shall be closely inspected and sounded by...

  12. 29 CFR 1910.243 - Guarding of portable powered tools.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... to which they are subjected. (c) Portable abrasive wheels—(1) General requirements. Abrasive wheels..., 11, 27, and 28 abrasive wheels, cutting off wheels, and tuck pointing wheels. (2) Cup wheels. Cup... abrasive wheels. (i) Immediately before mounting, all wheels shall be closely inspected and sounded by...

  13. 29 CFR 1910.243 - Guarding of portable powered tools.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... to which they are subjected. (c) Portable abrasive wheels—(1) General requirements. Abrasive wheels..., 11, 27, and 28 abrasive wheels, cutting off wheels, and tuck pointing wheels. (2) Cup wheels. Cup... abrasive wheels. (i) Immediately before mounting, all wheels shall be closely inspected and sounded by...

  14. Controlling power systems during emergencies

    SciTech Connect

    Kirschen, D.S.; Wollenberg, B.F.; Irisarri, G.D.; Bann, J.J.; Miller, B.N.

    1989-04-01

    Economic and social factors in many parts of the world now require power systems to be operated at less generation reserve and closer to transmission flow and contingency voltage limits than formerly practiced. The result has been an increase in the complexity of power systems operations. The installation of computerized Energy Management Systems (EMS) has helped alleviate some of these difficulties: Supervisory Control And Data-Acquisition (SCADA) systems have made possible the centralization of the decision-making process. Advanced applications such as optimal power flow and security analysis have helped operators maintain the system in a secure and optimal state. Expert system technology is now being implemented in EMS installations to provide operators with the tools necessary to meet the needs just described. This article explores some applications of expert systems to power system control and shows how they can be used to alleviate the burden on the operators during emergency periods. To this end, the design and implementation of two applications are presented: An intelligent alarm processor (IAP); and A program for the diagnosis of system faults (DSF).

  15. Army Science Conference 2006 TECHNOLOGY ASSESSMENT OF SOLDIER & MAN PORTABLE FUEL CELL POWER

    DTIC Science & Technology

    2006-11-27

    Research Development Engineering Center (CERDEC) Fuel Cell Technology Team initiated several development contracts to address multiple areas where fuel cell technologies... fuel cell technology focuses specifically on Soldier worn power equipment, mainly from the sub to 100 Watt range. Man Portable Power fuel cell technology

  16. Emergency Power For Critical Items

    NASA Astrophysics Data System (ADS)

    Young, William R.

    2009-07-01

    Natural disasters, such as hurricanes, floods, tornados, and tsunami, are becoming a greater problem as climate change impacts our environment. Disasters, whether natural or man made, destroy lives, homes, businesses and the natural environment. Such disasters can happen with little or no warning, leaving hundreds or even thousands of people without medical services, potable water, sanitation, communications and electrical services for up to several weeks. In our modern world, the need for electricity has become a necessity. Modern building codes and new disaster resistant building practices are reducing the damage to homes and businesses. Emergency gasoline and diesel generators are becoming common place for power outages. Generators need fuel, which may not be available after a disaster, but Photovoltaic (solar-electric) systems supply electricity without petroleum fuel as they are powered by the sun. Photovoltaic (PV) systems can provide electrical power for a home or business. PV systems can operate as utility interactive or stand-alone with battery backup. Determining your critical load items and sizing the photovoltaic system for those critical items, guarantees their operation in a disaster.

  17. Microbial fuel cells as discontinuous portable power sources: syntropic interactions with anode-respiring bacteria.

    PubMed

    Gao, Yaohuan; An, Junyeong; Ryu, Hodon; Lee, Hyung-Sool

    2014-04-01

    For microbial fuel cells (MFCs) to work as portable power sources used in a discontinuous manner, anode-respiring bacteria (ARB) should survive for at least several days in the absence of exogenous electron donors, and immediately generate current upon addition of an electron donor. Here, we proved that biopolymer-accumulating bacteria provide substrate (fuel) for ARB to generate current in lack of exogenous electron donor in 4 days, which allows MFCs to be used as portable power sources. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  18. 46 CFR 154.1020 - Emergency power.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Emergency power. 154.1020 Section 154.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS... § 154.1020 Emergency power. The emergency generator must be designed to allow operation at the...

  19. 46 CFR 154.1020 - Emergency power.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Emergency power. 154.1020 Section 154.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS... § 154.1020 Emergency power. The emergency generator must be designed to allow operation at the...

  20. 46 CFR 154.1020 - Emergency power.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Emergency power. 154.1020 Section 154.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS... § 154.1020 Emergency power. The emergency generator must be designed to allow operation at the...

  1. 46 CFR 154.1020 - Emergency power.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Emergency power. 154.1020 Section 154.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS... § 154.1020 Emergency power. The emergency generator must be designed to allow operation at the...

  2. 46 CFR 154.1020 - Emergency power.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Emergency power. 154.1020 Section 154.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS... § 154.1020 Emergency power. The emergency generator must be designed to allow operation at the...

  3. Portable Welder

    NASA Technical Reports Server (NTRS)

    1984-01-01

    A low cost, low power, self-contained portable welding gun designed for joining thermoplastics which become soft when heated and harden when cooled was developed originally by NASA's Langley Research Center for repairing helicopter windshields. Welder has a broad range of applications for joining both thermoplastic materials in the aerospace, automotive, appliance, and construction industries. Welders portability and low power requirement allow its use on-site in any type of climate, with power supplied by a variety of portable sources.

  4. A Low-Power and Portable Biomedical Device for Respiratory Monitoring with a Stable Power Source.

    PubMed

    Yang, Jiachen; Chen, Bobo; Zhou, Jianxiong; Lv, Zhihan

    2015-08-11

    Continuous respiratory monitoring is an important tool for clinical monitoring. Associated with the development of biomedical technology, it has become more and more important, especially in the measuring of gas flow and CO2 concentration, which can reflect the status of the patient. In this paper, a new type of biomedical device is presented, which uses low-power sensors with a piezoresistive silicon differential pressure sensor to measure gas flow and with a pyroelectric sensor to measure CO2 concentration simultaneously. For the portability of the biomedical device, the sensors and low-power measurement circuits are integrated together, and the airway tube also needs to be miniaturized. Circuits are designed to ensure the stability of the power source and to filter out the existing noise. Modulation technology is used to eliminate the fluctuations at the trough of the waveform of the CO2 concentration signal. Statistical analysis with the coefficient of variation was performed to find out the optimal driving voltage of the pressure transducer. Through targeted experiments, the biomedical device showed a high accuracy, with a measuring precision of 0.23 mmHg, and it worked continuously and stably, thus realizing the real-time monitoring of the status of patients.

  5. A Low-Power and Portable Biomedical Device for Respiratory Monitoring with a Stable Power Source

    PubMed Central

    Yang, Jiachen; Chen, Bobo; Zhou, Jianxiong; Lv, Zhihan

    2015-01-01

    Continuous respiratory monitoring is an important tool for clinical monitoring. Associated with the development of biomedical technology, it has become more and more important, especially in the measuring of gas flow and CO2 concentration, which can reflect the status of the patient. In this paper, a new type of biomedical device is presented, which uses low-power sensors with a piezoresistive silicon differential pressure sensor to measure gas flow and with a pyroelectric sensor to measure CO2 concentration simultaneously. For the portability of the biomedical device, the sensors and low-power measurement circuits are integrated together, and the airway tube also needs to be miniaturized. Circuits are designed to ensure the stability of the power source and to filter out the existing noise. Modulation technology is used to eliminate the fluctuations at the trough of the waveform of the CO2 concentration signal. Statistical analysis with the coefficient of variation was performed to find out the optimal driving voltage of the pressure transducer. Through targeted experiments, the biomedical device showed a high accuracy, with a measuring precision of 0.23 mmHg, and it worked continuously and stably, thus realizing the real-time monitoring of the status of patients. PMID:26270665

  6. PowerCore{trademark}, NiMH production prototype for portable electronics. Quarterly report R02

    SciTech Connect

    Lyman, P.C.

    1998-01-30

    The objective of this project is to build a production prototype of Power Core structural battery for applications as a hard case for portable electronic devices. The reports summarizes the work completed since the last report. It briefly describes the problems that were experienced. It also gives details of progress versus statement of work task definitions.

  7. A Portable Low-Power Harmonic Radar System and Conformal Tag for Insect Tracking

    USDA-ARS?s Scientific Manuscript database

    Harmonic radar systems provide an effective modality for tracking insect behavior. This paper presents a harmonic radar system proposed to track the migration of the Emerald Ash Borer (EAB). The system offers a unique combination of portability, low power and small tag design. It is comprised of a...

  8. Safety with Hand and Portable Power Tools. Module SH-14. Safety and Health.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This student module on safety with hand and portable power tools is one of 50 modules concerned with job safety and health. This module discusses the proper use and maintenance of tools, including the need for protective equipment for the worker. Following the introduction, 16 objectives (each keyed to a page in the text) the student is expected…

  9. Design, integration and demonstration of a 50 W JP8/kerosene fueled portable SOFC power generator

    NASA Astrophysics Data System (ADS)

    Cheekatamarla, Praveen K.; Finnerty, Caine M.; Robinson, Charles R.; Andrews, Stanley M.; Brodie, Jonathan A.; Lu, Y.; DeWald, Paul G.

    A man-portable solid oxide fuel cell (SOFC) system integrated with desulfurized JP8 partial oxidation (POX) reformer was demonstrated to supply a continuous power output of 50 W. This paper discusses some of the design paths chosen and challenges faced during the thermal integration of the stack and reformer in aiding the system startup and shutdown along with balance of plant and power management solutions. The package design, system capabilities, and test results of the prototype unit are presented.

  10. Analysis of DMFC/battery hybrid power system for portable applications

    NASA Astrophysics Data System (ADS)

    Lee, Bong-Do; Jung, Doo-Hwan; Ko, Young-Ho

    This study was carried out to develop a direct methanol fuel cell (DMFC)/battery hybrid power system used in portable applications. For a portable power system, the DMFC was applied for the main power source at average load and the battery was applied for auxiliary power at overload. Load share characteristics of hybrid power source were analyzed by computational simulation. The connection apparatus between the DMFC and the battery was set and investigated in the real system. Voltages and currents of the load, the battery and the DMFC were measured according to fuel, air and load changes. The relationship between load share characteristic and battery capacity was surveyed. The relationship was also studied in abnormal operation. A DMFC stack was manufactured for this experiment. For the study of the connection characteristics to the fuel cell Pb-acid, Ni-Cd and Ni-MH batteries were tested. The results of this study can be applied to design the interface module of the fuel cell/battery hybrid system and to determine the design requirement in the fuel cell stack for portable applications.

  11. Portable Wind Energy Harvesters for Low-Power Applications: A Survey.

    PubMed

    Nabavi, Seyedfakhreddin; Zhang, Lihong

    2016-07-16

    Energy harvesting has become an increasingly important topic thanks to the advantages in renewability and environmental friendliness. In this paper, a comprehensive study on contemporary portable wind energy harvesters has been conducted. The electrical power generation methods of portable wind energy harvesters are surveyed in three major groups, piezoelectric-, electromagnetic-, and electrostatic-based generators. The paper also takes another view of this area by gauging the required mechanisms for trapping wind flow from ambient environment. In this regard, rotational and aeroelastic mechanisms are analyzed for the portable wind energy harvesting devices. The comparison between both mechanisms shows that the aeroelastic mechanism has promising potential in producing an energy harvester in smaller scale although how to maintain the resonator perpendicular to wind flow for collecting the maximum vibration is still a major challenge to overcome for this mechanism. Furthermore, this paper categorizes the previously published portable wind energy harvesters to macro and micro scales in terms of their physical dimensions. The power management systems are also surveyed to explore the possibility of improving energy conversion efficiency. Finally some insights and research trends are pointed out based on an overall analysis of the previously published works along the historical timeline.

  12. Portable Wind Energy Harvesters for Low-Power Applications: A Survey

    PubMed Central

    Nabavi, Seyedfakhreddin; Zhang, Lihong

    2016-01-01

    Energy harvesting has become an increasingly important topic thanks to the advantages in renewability and environmental friendliness. In this paper, a comprehensive study on contemporary portable wind energy harvesters has been conducted. The electrical power generation methods of portable wind energy harvesters are surveyed in three major groups, piezoelectric-, electromagnetic-, and electrostatic-based generators. The paper also takes another view of this area by gauging the required mechanisms for trapping wind flow from ambient environment. In this regard, rotational and aeroelastic mechanisms are analyzed for the portable wind energy harvesting devices. The comparison between both mechanisms shows that the aeroelastic mechanism has promising potential in producing an energy harvester in smaller scale although how to maintain the resonator perpendicular to wind flow for collecting the maximum vibration is still a major challenge to overcome for this mechanism. Furthermore, this paper categorizes the previously published portable wind energy harvesters to macro and micro scales in terms of their physical dimensions. The power management systems are also surveyed to explore the possibility of improving energy conversion efficiency. Finally some insights and research trends are pointed out based on an overall analysis of the previously published works along the historical timeline. PMID:27438834

  13. Wearable Triboelectric Generator for Powering the Portable Electronic Devices.

    PubMed

    Cui, Nuanyang; Liu, Jinmei; Gu, Long; Bai, Suo; Chen, Xiaobo; Qin, Yong

    2015-08-26

    A cloth-base wearable triboelectric nanogenerator made of nylon and Dacron fabric was fabricated for harvesting body motion energy. Through the friction between forearm and human body, the generator can turn the mechanical energy of an arm swing into electric energy and power an electroluminescent tubelike lamp easily. The maximum output current and voltage of the generator reach up to 0.2 mA and 2 kV. Furthermore, this generator can be easily folded, kneaded, and cleaned like a common garment.

  14. Fuel-Flexible Engines for Portable-Power Applications

    DTIC Science & Technology

    2009-05-31

    BioEthanol C2-H6-O (CH5- OH) 0.789 365 9 TA1 BioButanol 0.805 343 11.1 TA1 Butanol C4-H10-O 0.805 343 11.1 TA1 JP8 n/a 0.8 240 15 TA1 Kerosene C13-H28... Production As can be seen from Figure 7 to Figure 10, the engine generated a range of output mechanical power for three different fuels...designing and developing products for the market leader in wafer test products . • John Réville – GRADUATED MAY 2009 - A 2nd year graduate student

  15. A miniaturized high-voltage integrated power supply for portable microfluidic applications.

    PubMed

    Erickson, David; Sinton, David; Li, Dongqing

    2004-04-01

    In this work a portable microfluidic device with a reusable integrated high voltage power supply is presented, which allows for quick exchange of inexpensive disposable poly(dimethylsiloxane)(PDMS) microfluidic chips on a carrier only slightly larger than a microscope slide. The device is powered by an onboard MN21 cell battery (5 mm radius, 30 mm long) and is demonstrated through the rapid and controlled transport of a fluorescent dye through an expansion chamber geometry. Power consumption experiments demonstrate the device's ability to complete over 40 dispense-flushing cycles on a single battery.

  16. 46 CFR 112.01-20 - Final emergency power source.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-20 Final emergency power source. A final emergency power source is one that functions after the temporary emergency power... 46 Shipping 4 2014-10-01 2014-10-01 false Final emergency power source. 112.01-20 Section 112.01...

  17. 46 CFR 112.01-20 - Final emergency power source.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-20 Final emergency power source. A final emergency power source is one that functions after the temporary emergency power... 46 Shipping 4 2013-10-01 2013-10-01 false Final emergency power source. 112.01-20 Section 112.01...

  18. 46 CFR 112.01-20 - Final emergency power source.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-20 Final emergency power source. A final emergency power source is one that functions after the temporary emergency power... 46 Shipping 4 2012-10-01 2012-10-01 false Final emergency power source. 112.01-20 Section 112.01...

  19. 46 CFR 112.01-20 - Final emergency power source.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-20 Final emergency power source. A final emergency power source is one that functions after the temporary emergency power... 46 Shipping 4 2011-10-01 2011-10-01 false Final emergency power source. 112.01-20 Section 112.01...

  20. 46 CFR 112.01-20 - Final emergency power source.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-20 Final emergency power source. A final emergency power source is one that functions after the temporary emergency power... 46 Shipping 4 2010-10-01 2010-10-01 false Final emergency power source. 112.01-20 Section 112.01...

  1. Battery powered portable vapor compression cycle system with PCM condenser

    NASA Astrophysics Data System (ADS)

    DeNardo, Nicholas M.

    Additive manufacturing, or 3D printing, encompasses manufacturing processes that construct a geometry by depositing or solidifying material only where it is needed in the absence of a mold. The ability to manufacture complex geometries on demand directly from a digital file, as well as the decreasing equipment costs due to increased competition in the market, have resulted in the AM industry experiencing rapid growth in the past decade. Many companies have emerged with novel technologies well suited to improve products and/or save costs in various industries. Until recently, the applications of polymer additive manufacturing have been mainly limited to prototyping. This can be attributed to multiple factors, namely the high cost of the machines and materials, long print times, and anisotropy of printed parts. In addition, the low unit cost and cycle time of competing processes such as injection molding further skew the economics in favor of other processes. The addition of fiber-reinforcement into polymers used in additive manufacturing processes significantly increases the strength of parts, and also allows larger parts to be manufactured. In 2014, large-scale additive manufacturing of fiber-reinforced polymers was pioneered, and has generated significant attention from both academia and industry. Commercial machines that incorporate high throughput extruders on gantry systems are now available. New applications that require high temperature polymers with low coefficients of thermal expansion and high stiffness are being targeted, for example tooling used in the manufacturing of composite components. The state of the art of this new paradigm in additive manufacturing as well as the target applications will be discussed in detail. Many new challenges arise as AM scales and reinforced polymers are incorporated. One of the most notable challenges is the presence of large temperature gradients induced in parts during the manufacturing process, which lead to residual

  2. Portable emergency telemedicine system over wireless broadband and 3G networks.

    PubMed

    Hong, SungHye; Kim, SangYong; Kim, JungChae; Lim, DongKyu; Jung, SeokMyung; Kim, DongKeun; Yoo, Sun K

    2009-01-01

    The telemedicine system aims at monitoring patients remotely without limit in time and space. However the existing telemedicine systems exchange medical information simply in a specified location. Due to increasing speed in processing data and expanding bandwidth of wireless networks, it is possible to perform telemedicine services on personal digital assistants (PDA). In this paper, a telemedicine system on PDA was developed using wideband mobile networks such as Wi-Fi, HSDPA, and WiBro for high speed bandwidths. This system enables to utilize and exchange variety and reliable patient information of video, biosignals, chatting messages, and triage data. By measuring bandwidths of individual data of the system over wireless networks, and evaluating the performance of this system using PDA, we demonstrated the feasibility of the designed portable emergency telemedicine system.

  3. Emergent Power Hierarchies and Group Performance.

    PubMed

    Frauendorfer, Denise; Schmid Mast, Marianne; Sanchez-Cortes, Dairazalia; Gatica-Perez, Daniel

    2015-10-01

    In newly formed groups, informal hierarchies emerge automatically and readily. In this study, we argue that emergent group hierarchies enhance group performance (Hypothesis 1) and we assume that the more the power hierarchy within a group corresponds to the task-competence differences of the individual group members, the better the group performs (Hypothesis 2). Twelve three-person groups and 28 four-person groups were investigated while solving the Winter Survival Task. Results show that emerging power hierarchies positively impact group performance but the alignment between task-competence and power hierarchy did not affect group performance. Thus, emergent power hierarchies are beneficial for group performance and although they were on average created around individual group members' competence, this correspondence was not a prerequisite for better group performance.

  4. 46 CFR 112.01-15 - Temporary emergency power source.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-15 Temporary emergency power source. A temporary emergency power source is one of limited capacity that carries... 46 Shipping 4 2014-10-01 2014-10-01 false Temporary emergency power source. 112.01-15 Section 112...

  5. 46 CFR 112.01-15 - Temporary emergency power source.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-15 Temporary emergency power source. A temporary emergency power source is one of limited capacity that carries... 46 Shipping 4 2011-10-01 2011-10-01 false Temporary emergency power source. 112.01-15 Section 112...

  6. 46 CFR 112.01-15 - Temporary emergency power source.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-15 Temporary emergency power source. A temporary emergency power source is one of limited capacity that carries... 46 Shipping 4 2012-10-01 2012-10-01 false Temporary emergency power source. 112.01-15 Section 112...

  7. 46 CFR 112.01-15 - Temporary emergency power source.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-15 Temporary emergency power source. A temporary emergency power source is one of limited capacity that carries... 46 Shipping 4 2010-10-01 2010-10-01 false Temporary emergency power source. 112.01-15 Section 112...

  8. 46 CFR 112.01-15 - Temporary emergency power source.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-15 Temporary emergency power source. A temporary emergency power source is one of limited capacity that carries... 46 Shipping 4 2013-10-01 2013-10-01 false Temporary emergency power source. 112.01-15 Section 112...

  9. Development and Applications of Portable Gas Chromatography-Mass Spectrometry for Emergency Responders, the Military, and Law-Enforcement Organizations.

    PubMed

    Leary, Pauline E; Dobson, Gareth S; Reffner, John A

    2016-05-01

    Portable gas chromatography-mass spectrometry (GC-MS) systems are being deployed for field use, and are designed with this goal in mind. Performance characteristics of instruments that are successful in the field are different from those of equivalent technologies that are successful in a laboratory setting. These field-portable systems are extending the capabilities of the field user, providing investigative leads and confirmatory identifications in real time. Many different types of users benefit from the availability of this technology including emergency responders, the military, and law-enforcement organizations. This manuscript describes performance characteristics that are important for field-portable instruments, especially field-portable GC-MS systems, and demonstrates the value of this equipment to the disciplines of explosives investigations, fire investigations, and counterfeit-drug detection. This paper describes the current state of portable GC-MS technology, including a review of the development of portable GC-MS, as well as a demonstration of the value of this capability using different examples.

  10. Micro solid oxide fuel cells: a new generation of micro-power sources for portable applications

    NASA Astrophysics Data System (ADS)

    Chiabrera, Francesco; Garbayo, Iñigo; Alayo, Nerea; Tarancón, Albert

    2017-06-01

    Portable electronic devices are already an indispensable part of our daily life; and their increasing number and demand for higher performance is becoming a challenge for the research community. In particular, a major concern is the way to efficiently power these energy-demanding devices, assuring long grid independency with high efficiency, sustainability and cheap production. In this context, technologies beyond Li-ion are receiving increasing attention, among which the development of micro solid oxide fuel cells (μSOFC) stands out. In particular, μSOFC provides a high energy density, high efficiency and opens the possibility to the use of different fuels, such as hydrocarbons. Yet, its high operating temperature has typically hindered its application as miniaturized portable device. Recent advances have however set a completely new range of lower operating temperatures, i.e. 350-450°C, as compared to the typical <900°C needed for classical bulk SOFC systems. In this work, a comprehensive review of the status of the technology is presented. The main achievements, as well as the most important challenges still pending are discussed, regarding (i.) the cell design and microfabrication, and (ii.) the integration of functional electrolyte and electrode materials. To conclude, the different strategies foreseen for a wide deployment of the technology as new portable power source are underlined.

  11. HYDROGEN STORAGE SOLUTIONS IN SUPPORT OF DOD WARFIGHTER PORTABLE POWER APPLICATIONS

    SciTech Connect

    Motyka, T.

    2009-01-06

    From Personal Digital Assistants (PDAs) to cell phones our high-tech world, today, is demanding smaller, lighter weight and higher capacity portable power devices. Nowhere has this personal power surge been more evident than in today's U.S Warfighter. The modern Warfighter is estimated to carry from 65 to 95 pounds of supplies in the field with over 30 pounds of this dedicated to portable power devices. These devices include computer displays, infrared sights, Global Positioning Systems (GPS), night vision and a variety of other sensor technologies. Over 80% of the energy needed to power these devices comes from primary (disposable) batteries. It is estimated that a brigade will consume as much as 7 tons of batteries in a 72 hour mission at a cost of $700,000. A recent comprehensive study on the energy needs of the future warrior published by the National Academy of Science in 2004 made a variety of recommendations for average power systems from 20 to 1,000 watts. For lower power systems recommendations included pursuing science and technology initiatives focused on: (1) 300 watt-hours per kilogram (Wh/kg) secondary battery technologies; (2) smart hybrids; and (3) fuel cells (with greater than 6 wt% hydrogen storage). Improved secondary (rechargeable) batteries may be the ideal solution for military power systems due to their ease of use and public acceptance. However, a 3X improvement in their specific energy density is not likely anytime soon. Today's Lithium Ion batteries, at about 150 Wh/kg, fall well short of the energy density that is required. Future battery technology may not be the answer since many experts do not predict more than a 2X improvement in Lithium battery systems over the next 10 years. That is why most auto companies have abandoned all electric vehicles in favor of fuel cells and hybrid vehicles. Fuel cells have very high specific energy densities but achieving high energy values will depend on the energy density and the storage method of its

  12. Ultra-Portable Solar-Powered 3D Printers for Onsite Manufacturing of Medical Resources.

    PubMed

    Wong, Julielynn Y

    2015-09-01

    The first space-based fused deposition modeling (FDM) 3D printer is powered by solar photovoltaics. This study seeks to demonstrate the feasibility of using solar energy to power a FDM 3D printer to manufacture medical resources at the Mars Desert Research Station and to design an ultra-portable solar-powered 3D printer for off-grid environments. Six solar panels in a 3×2 configuration, a voltage regulator/capacitor improvised from a power adapter, and two 12V batteries in series were connected to power a FDM 3D printer. Three designs were printed onsite and evaluated by experts post analogue mission. A solar-powered 3D printer composed of off-the-shelf components was designed to be transported in airline carry-on luggage. During the analogue mission, the solar-powered printer could only be operated for <1 h/d, but was able to fabricate a functional dental tool, scalpel handle, and customized mallet splint over 2 d. Post analogue mission, an ultra-portable plug-and-play solar-powered 3D printer was designed that could print an estimated 16 dental tools or 8 mallet finger splints or 7 scalpel handles on one fully charged 12V 150Wh battery with a 110V AC converter. It is feasible to use solar energy to power a 3D printer to manufacture functional and personalized medical resources at a Mars analogue research station. Based on these findings, a solar-powered suitcase 3D printing system containing solar panels, 12V battery with charge controller and AC inverter, and back-up solar charge controller and inverter was designed for transport to and use in off-grid communities.

  13. Solar Photovoltaic Technology Assessment for Soldier-Portable and Mobile Power

    DTIC Science & Technology

    2010-06-16

    S ol di er -P or ta bl e an d M ob ile P ow er Solar Photovoltaic Technology Assessment for Soldier-Portable and Mobile Power Cao Chung, US...21005 DESTRUCTION NOTICE- Destroy by any method that will prevent disclosure of contents or reconstruction of the document. PTAE - TR – 10 – 01...NUMBER 6. AUTHOR( S ) Cao Chung 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME( S ) AND ADDRESS(ES) U.S

  14. A portable and power-free microfluidic device for rapid and sensitive lead (Pb2+) detection.

    PubMed

    Fan, Chunhui; He, Shijiang; Liu, Gang; Wang, Lianhui; Song, Shiping

    2012-01-01

    A portable and power-free microfluidic device was designed for rapid and sensitive detection of lead (Pb(2+)). 11-mercaptoundecanoic acid (MUA)-functionalized gold nanoparticles (MUA-AuNPs) aggregated in the presence of Pb(2+) for the chelation mechanism. When we performed this analysis on a polydimethylsiloxane (PDMS) microfluidic chip, the aggregations deposited onto the surface of chip and formed dark lines along the laminar flows in the zigzag microchannels. This visual result can be observed by the naked eye through a microscope or just a drop of water as a magnifier. Ten μM Pb(2+) was successfully detected.

  15. Reliability of emergency ac power systems at nuclear power plants

    SciTech Connect

    Battle, R E; Campbell, D J

    1983-07-01

    Reliability of emergency onsite ac power systems at nuclear power plants has been questioned within the Nuclear Regulatory Commission (NRC) because of the number of diesel generator failures reported by nuclear plant licensees and the reactor core damage that could result from diesel failure during an emergency. This report contains the results of a reliability analysis of the onsite ac power system, and it uses the results of a separate analysis of offsite power systems to calculate the expected frequency of station blackout. Included is a design and operating experience review. Eighteen plants representative of typical onsite ac power systems and ten generic designs were selected to be modeled by fault trees. Operating experience data were collected from the NRC files and from nuclear plant licensee responses to a questionnaire sent out for this project.

  16. [A manually operated portable cardiopulmonary bypass circuit for emergency and its hydrokinetics].

    PubMed

    Tajiri, A; Terasaki, H; Morioka, T

    1993-09-01

    We developed a manually operated portable cardiopulmonary bypass circuit for emergency. The priming volume of the circuit is about 300 ml, including the self-inflating reservoir-pump of 120 ml in capacity. The self-inflating reservoir-pump with two one-way valves can drain venous blood via the femoral vein without a water head, and return the blood into the femoral artery through a membrane lung. Bypass flow under various conditions was measured with an electromagnetic flowmeter. Pressure resistance of the artificial lung was also measured. When a DLP 21 Fr size catheter was used as a venous drainage catheter and DLP 17 Fr size for arterial infusion, bypass flow was 0.8-1.2l.min-1 without a water head for venous drainage, or 1.4-1.7l.min-1 with a 60 cm water head, respectively. One investigator could repeat squeezing the reservoir-pump for two hours under each condition. The bypass flow rates of the circuit depend upon the height of the water head and the internal diameters of the venous drainage catheter. The diameter of the arterial catheter affects the squeezing pressure, but it is overcome by manual force and has no influence on the flow rate. The lung had no significant resistance either to blood flow or insufflation gases.

  17. Ultralight Cut-Paper-Based Self-Charging Power Unit for Self-Powered Portable Electronic and Medical Systems.

    PubMed

    Guo, Hengyu; Yeh, Min-Hsin; Zi, Yunlong; Wen, Zhen; Chen, Jie; Liu, Guanlin; Hu, Chenguo; Wang, Zhong Lin

    2017-04-12

    The development of lightweight, superportable, and sustainable power sources has become an urgent need for most modern personal electronics. Here, we report a cut-paper-based self-charging power unit (PC-SCPU) that is capable of simultaneously harvesting and storing energy from body movement by combining a paper-based triboelectric nanogenerator (TENG) and a supercapacitor (SC), respectively. Utilizing the paper as the substrate with an assembled cut-paper architecture, an ultralight rhombic-shaped TENG is achieved with highly specific mass/volume charge output (82 nC g(-1)/75 nC cm(-3)) compared with the traditional acrylic-based TENG (5.7 nC g(-1)/5.8 nC cm(-3)), which can effectively charge the SC (∼1 mF) to ∼1 V in minutes. This wallet-contained PC-SCPU is then demonstrated as a sustainable power source for driving wearable and portable electronic devices such as a wireless remote control, electric watch, or temperature sensor. This study presents a potential paper-based portable SCPU for practical and medical applications.

  18. Battery-powered portable instrument system for single-cell trapping, impedance measurements, and modeling analyses.

    PubMed

    Tsai, Sung-Lin; Chiang, Yang; Wang, Min-Haw; Chen, Ming-Kun; Jang, Ling-Sheng

    2014-08-01

    A battery-powered portable instrument system for the single-HeLa-cell trapping and analyses is developed. A method of alternating current electrothermal (ACET) and DEP are employed for the cell trapping and the method of impedance spectroscopy is employed for cell characterizations. The proposed instrument (160 mm × 170 mm × 110 mm, 1269 g) equips with a highly efficient energy-saving design that promises approximately 120 h of use. It includes an impedance analyzer performing an excitation voltage of 0.2-2 Vpp and a frequency sweep of 11-101 kHz, function generator with the sine wave output at an operating voltage of 1-50 Vpp with a frequency of 4-12 MHz, cell-trapping biochip, microscope, and input/output interface. The biochip for the single cell trapping is designed and simulated based on a combination of ACET and DEP forces. In order to improve measurement accuracy, the curve fitting method is adopted to calibrate the proposed impedance spectroscopy. Measurement results from the proposed system are compared with results from a precision impedance analyzer. The trapped cell can be modeled for numerical analyses. Many advantages are offered in the proposed instrument such as the small volume, real-time monitoring, rapid analysis, low cost, low-power consumption, and portable application. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  19. An ultra-low-power ambient light sensor for portable devices

    NASA Astrophysics Data System (ADS)

    Cho, Soon-Ik; Kim, Yun-Jeong; Lee, Jong-Ho; Baek, Kwang-Hyun; Kim, Suki

    2009-02-01

    Power management is one of the most important issues in portable electronics like cell phone, PDA, UMPC, GPS, MP3 player and laptop computer. Ambient Light Sensors are getting popular as a most effective solution to extend battery lifetime for these devices. This paper provides basic information about ambient light sensors on a general level and introduces an ultra low-power ambient light sensor for portable electronics. The implemented ambient light sensor converts light illuminance to 5-digital codes every 300ms which can measure illuminance from 10 to 1000 Lux consuming only 5uA. An IR-reject optical filter and a built-in integrating analog-to-digital converter reduce influences of infrared ray and 50Hz/60Hz noise from artificial light sources respectively. The ambient light sensor is fabricated in a standard CMOS 0.5-um process technology. Test results show that the implemented ambient light sensor has incandescent/fluorescent light sensitivity ratio around 2.3.

  20. DOE FUEL CELL R&D ACTIVITIES: TRANSPORTATION, STATIONARY, AND PORTABLE POWER APPLICATIONS

    SciTech Connect

    Payne, Terry L; Garland, Nancy

    2009-01-01

    Fuel Cell R&D Activities: Transportation, Stationary, and Portable Power Applications Terry Payne, PhD, PE, Technology development Manager; and Nancy Garland, PhD, Acting Fuel Cell Team Leader, Office of Hydrogen, Fuel Cells and Infrastructure Technologies, U.S. Department of Energy* In 2007, the Department of Energy s Hydrogen Program initiated new research and development projects aimed at reducing component cost and increasing stack durability and performance of transportation and stationary fuel cells. Updated progress in the Program including highlights from the new projects includes operation of a membrane electrode assembly over 7300 with voltage cycling. Market transformation activities in the Program such as forklifts for distribution centers and fuel cells for backup power will be discussed.

  1. The Epidemiology of Emergency Department-Treated Burn Injuries Associated with Portable Heaters in the United States, 2003-2013.

    PubMed

    Brooks, Raina D; McGwin, Gerald

    The purpose of this study is to examine the epidemiology of portable space heater-related burn injuries among an emergency department nationally representative population of the United States. The data analyzed in this study were collected from the Consumer Products Safety Commission's 2003-2013 National Electronic Injury Surveillance System. There were approximately 53,636 space heater-related thermal burn injuries attributed to portable space heaters from 2003 to 2013. The rate of injuries was relatively constant during the 10-year span. The number of burn injuries was highest during winter months. Young children, older adults, males, and Blacks had the highest rates of injury. The body part most commonly injured was the hand, which accounted for 33.3% of all burn injuries. It is important to understand the characteristics of persons who have an increased risk of portable space heater burn and trip/fall injuries, so that preventative methods and awareness strategies can be used to help reduce the number of annual portable space heater injuries.

  2. Skylab IMSS checklist application study for emergency medical care. [emergency medical care operations involving the use and operation of the portable ambulance module

    NASA Technical Reports Server (NTRS)

    Carl, J. G.; Furukawa, S.

    1975-01-01

    A manual is presented that provides basic technical documentation to support the operation and utilization of the Portable Ambulance Module (PAM) in the field. The PAM is designed to be used for emergency resuscitation and victim monitoring. The functions of all the controls, displays, and stowed equipment of the unit are defined. Supportive medical and physiological data in those areas directly related to the uses of the PAM unit are presented.

  3. A dynamic isotope power system portable generator for the moon or Mars

    NASA Technical Reports Server (NTRS)

    Johnson, Richard A.; Hunt, Maribeth E.; Pepping, Richard E.; Mason, Lee S.

    1991-01-01

    The dynamic isotope power systems (DIPS) demonstration program is focused on a standardized 2.5 kWe portable generator for multiple uses on the lunar or Martian surface. A variety of potential remote or mobile applications has been identified by NASA. These applications include remote power to science packages, surface rovers for both short and extended duration missions, and backup to central base power. Reviews conducted on alternative power sources for these applications are described. These include the comparison of DIPS to regenerative fuel cells (RFCs). Recent work is presented refining the 2.5 kWe design to assure compatibility with the Martian environment while imposing only a minor mass penalty on lunar operations. This was accomplished by limiting temperatures, except in the heat source unit (HSU), to the nonrefractory materials regime and protecting the necessary refractories in the HSU from the environment. Design changes to the HSU are described. Work related to recent concerns regarding astronaut radiation doses is described. This work includes the bases for the calculations to determine the necessary shielding or operational limitations.

  4. Nanoscale triboelectric-effect-enabled energy conversion for sustainably powering portable electronics.

    PubMed

    Wang, Sihong; Lin, Long; Wang, Zhong Lin

    2012-12-12

    Harvesting energy from our living environment is an effective approach for sustainable, maintenance-free, and green power source for wireless, portable, or implanted electronics. Mechanical energy scavenging based on triboelectric effect has been proven to be simple, cost-effective, and robust. However, its output is still insufficient for sustainably driving electronic devices/systems. Here, we demonstrated a rationally designed arch-shaped triboelectric nanogenerator (TENG) by utilizing the contact electrification between a polymer thin film and a metal thin foil. The working mechanism of the TENG was studied by finite element simulation. The output voltage, current density, and energy volume density reached 230 V, 15.5 μA/cm(2), and 128 mW/cm(3), respectively, and an energy conversion efficiency as high as 10-39% has been demonstrated. The TENG was systematically studied and demonstrated as a sustainable power source that can not only drive instantaneous operation of light-emitting diodes (LEDs) but also charge a lithium ion battery as a regulated power module for powering a wireless sensor system and a commercial cell phone, which is the first demonstration of the nanogenerator for driving personal mobile electronics, opening the chapter of impacting general people's life by nanogenerators.

  5. Finger-powered electrophoretic transport of discrete droplets for portable digital microfluidics.

    PubMed

    Peng, Cheng; Wang, Yide; Sungtaek Ju, Y

    2016-07-07

    We report a finger-powered digital microfluidic device based on the electrophoretic transport of discrete droplets (EPD). An array of piezoelectric elements is connected in parallel to metal electrodes immersed in dielectric fluids. When deflected in a controlled sequence via human finger power, the piezoelectric elements charge and actuate droplets across each electrode pair through electrophoretic force. Successful droplet transportation requires the piezoelectric elements to provide both sufficient charge and voltage pulse duration. We quantify these requirements using numerical models to predict the electrical charges induced on the droplets and the corresponding electrophoretic forces. The models are experimentally validated by comparing the predicted and measured droplet translational velocities. We successfully demonstrated transport and merging of aqueous droplets over a range of droplet radii (0.6-0.9 mm). We further showed direct manipulation of body fluids, including droplets of saliva and urine, using our finger-powered EPD device. To facilitate practical implementation of multistep assays based on the approach, a hand/finger-rotated drum system with a programmable pattern of protrusions is designed to induce deflections of multiple piezoelectric elements and demonstrate programmable fluidic functions. An electrode-to-piezoelectric element connection scheme to minimize the number of piezoelectric elements necessary for a sequence of microfluidic functions is also explored. The present work establishes an engineering foundation to enable design and implementation of finger-powered portable EPD microfluidic devices.

  6. Market survey of fuel cells in Mexico: Niche for low power portable systems

    NASA Astrophysics Data System (ADS)

    Ramírez-Salgado, Joel; Domínguez-Aguilar, Marco A.

    This work provides an overview of the potential market in Mexico for portable electronic devices to be potentially powered by direct methanol fuel cells. An extrapolation method based on data published in Mexico and abroad served to complete this market survey. A review of electronics consumption set the basis for the future forecast and technology assimilation. The potential market for fuel cells for mobile phones in Mexico will be around 5.5 billion USD by 2013, considering a cost of 41 USD per cell in a market of 135 million mobile phones. Likewise, the market for notebook computers, PDAs and other electronic devices will likely grow in the future, with a combined consumption of fuel cell technology equivalent to 1.6 billion USD by 2014.

  7. Progress Towards an Optimization Methodology for Combustion-Driven Portable Thermoelectric Power Generation Systems

    NASA Astrophysics Data System (ADS)

    Krishnan, Shankar; Karri, Naveen K.; Gogna, Pawan K.; Chase, Jordan R.; Fleurial, Jean-Pierre; Hendricks, Terry J.

    2012-06-01

    There is enormous military and commercial interest in developing quiet, lightweight, and compact thermoelectric (TE) power generation systems. This paper investigates design integration and analysis of an advanced TE power generation system implementing JP-8 fueled combustion and thermal recuperation. In the design and development of this portable TE power system using a JP-8 combustor as a high-temperature heat source, optimal process flows depend on efficient heat generation, transfer, and recovery within the system. The combustor performance and TE subsystem performance were coupled directly through combustor exhaust temperatures, fuel and air mass flow rates, heat exchanger performance, subsequent hot-side temperatures, and cold-side cooling techniques and temperatures. Systematic investigation and design optimization of this TE power system relied on accurate thermodynamic modeling of complex, high-temperature combustion processes concomitantly with detailed TE converter thermal/mechanical modeling. To this end, this paper reports integration of system-level process flow simulations using CHEMCAD™ commercial software with in-house TE converter and module optimization, and heat exchanger analyses using COMSOL™ software. High-performance, high-temperature TE materials and segmented TE element designs are incorporated in coupled design analyses to achieve predicted TE subsystem-level conversion efficiencies exceeding 10%. These TE advances are integrated with a high-performance microtechnology combustion reactor based on recent advances at Pacific Northwest National Laboratory (PNNL). Predictions from this coupled simulation approach lead directly to system efficiency-power maps defining potentially available optimal system operating conditions and regimes. Further, it is shown that, for a given fuel flow rate, there exists a combination of recuperative effectiveness and hot-side heat exchanger effectiveness that provides a higher specific power output from

  8. Thermal batteries for aircraft emergency power

    NASA Astrophysics Data System (ADS)

    Ryan, David M.

    1993-02-01

    Thermal batteries are being proposed for the Emergency Power System for aircraft. Thermal batteries are a reserve type battery which is essentially inert until activated. Thermal batteries can generate full power in several seconds and nominally produce 20 WHr/Ib and operate over a temperature range of -65 deg to 165 deg. Thermal batteries have a proven field storage life exceeding 25 years. They contain no liquids, can be maintained at any attitude, operate at any altitude, and do not leak any toxic or noxious materials. Expended thermal batteries contain no lead or cadmium and do not represent a significant disposal or environmental problem. Thermal batteries have a thirty year history of excellent performance providing on-board power for missiles and other weapons and have a proven safety record with no field injuries ever. Thermal batteries have a relatively low cost of initial ownership and require no maintenance.

  9. 46 CFR 112.05-5 - Emergency power source.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... AND POWER SYSTEMS General § 112.05-5 Emergency power source. (a) The emergency power source must meet... 46 Shipping 4 2011-10-01 2011-10-01 false Emergency power source. 112.05-5 Section 112.05-5... with § 112.05-1(c). Table 112.05-5(a) Size of vessel and service Type of emergency power source or...

  10. 46 CFR 112.05-5 - Emergency power source.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... AND POWER SYSTEMS General § 112.05-5 Emergency power source. (a) The emergency power source must meet... 46 Shipping 4 2014-10-01 2014-10-01 false Emergency power source. 112.05-5 Section 112.05-5... with § 112.05-1(c). Table 112.05-5(a) Size of vessel and service Type of emergency power source or...

  11. 46 CFR 112.05-5 - Emergency power source.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... AND POWER SYSTEMS General § 112.05-5 Emergency power source. (a) The emergency power source must meet... 46 Shipping 4 2013-10-01 2013-10-01 false Emergency power source. 112.05-5 Section 112.05-5... with § 112.05-1(c). Table 112.05-5(a) Size of vessel and service Type of emergency power source or...

  12. 46 CFR 112.05-5 - Emergency power source.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... AND POWER SYSTEMS General § 112.05-5 Emergency power source. (a) The emergency power source must meet... 46 Shipping 4 2012-10-01 2012-10-01 false Emergency power source. 112.05-5 Section 112.05-5... with § 112.05-1(c). Table 112.05-5(a) Size of vessel and service Type of emergency power source or...

  13. Research of high power and stable laser in portable Raman spectrometer based on SHINERS technology

    NASA Astrophysics Data System (ADS)

    Cui, Yongsheng; Yin, Yu; Wu, Yulin; Ni, Xuxiang; Zhang, Xiuda; Yan, Huimin

    2013-08-01

    The intensity of Raman light is very weak, which is only from 10-12 to 10-6 of the incident light. In order to obtain the required sensitivity, the traditional Raman spectrometer tends to be heavy weight and large volume, so it is often used as indoor test device. Based on the Shell-Isolated Nanoparticle-Enhanced Raman Spectroscopy (SHINERS) method, Raman optical spectrum signal can be enhanced significantly and the portable Raman spectrometer combined with SHINERS method will be widely used in various fields. The laser source must be stable enough and able to output monochromatic narrow band laser with stable power in the portable Raman spectrometer based on the SHINERS method. When the laser is working, the change of temperature can induce wavelength drift, thus the power stability of excitation light will be affected, so we need to strictly control the working temperature of the laser, In order to ensure the stability of laser power and output current, this paper adopts the WLD3343 laser constant current driver chip of Wavelength Electronics company and MCU P89LPC935 to drive LML - 785.0 BF - XX laser diode(LD). Using this scheme, the Raman spectrometer can be small in size and the drive current can be constant. At the same time, we can achieve functions such as slow start, over-current protection, over-voltage protection, etc. Continuous adjustable output can be realized under control, and the requirement of high power output can be satisfied. Max1968 chip is adopted to realize the accurate control of the laser's temperature. In this way, it can meet the demand of miniaturization. In term of temperature control, integral truncation effect of traditional PID algorithm is big, which is easy to cause static difference. Each output of incremental PID algorithm has nothing to do with the current position, and we can control the output coefficients to avoid full dose output and immoderate adjustment, then the speed of balance will be improved observably. Variable

  14. 300 WATT PORTABLE THERMOELECTRIC GENERATOR.

    DTIC Science & Technology

    THERMOELECTRICITY, POWER SUPPLIES), (* GENERATORS , THERMOELECTRICITY), (*ELECTRIC POWER PRODUCTION, THERMOELECTRICITY), PORTABLE EQUIPMENT, THERMOCOUPLES, ENERGY CONVERSION, HEAT EXCHANGERS, WIRING DIAGRAMS

  15. Propagation issues for emerging mobile and portable communications: A systems perspective

    NASA Technical Reports Server (NTRS)

    Golshan, Nasser

    1993-01-01

    The viewpoint of a system engineer regarding the format of propagation information and models suitable for the design of mobile and portable satellite communications systems for the following services: audio broadcast, two way voice, and packet data is presented. Topics covered include: propagation impairments for portable indoor reception in satellite communications systems; propagation impairments and mitigation techniques for mobile satellite communications systems; characterization of mobile satellite communications channels in the presence of roadside blockage when interleaving and FEC coding are implemented; characterization of short-term mobile satellite signal variations; and characterization of long-term signal variations.

  16. A configurable and low-power mixed signal SoC for portable ECG monitoring applications.

    PubMed

    Kim, Hyejung; Kim, Sunyoung; Van Helleputte, Nick; Artes, Antonio; Konijnenburg, Mario; Huisken, Jos; Van Hoof, Chris; Yazicioglu, Refet Firat

    2014-04-01

    This paper describes a mixed-signal ECG System-on-Chip (SoC) that is capable of implementing configurable functionality with low-power consumption for portable ECG monitoring applications. A low-voltage and high performance analog front-end extracts 3-channel ECG signals and single channel electrode-tissue-impedance (ETI) measurement with high signal quality. This can be used to evaluate the quality of the ECG measurement and to filter motion artifacts. A custom digital signal processor consisting of 4-way SIMD processor provides the configurability and advanced functionality like motion artifact removal and R peak detection. A built-in 12-bit analog-to-digital converter (ADC) is capable of adaptive sampling achieving a compression ratio of up to 7, and loop buffer integration reduces the power consumption for on-chip memory access. The SoC is implemented in 0.18 μm CMOS process and consumes 32 μ W from a 1.2 V while heart beat detection application is running, and integrated in a wireless ECG monitoring system with Bluetooth protocol. Thanks to the ECG SoC, the overall system power consumption can be reduced significantly.

  17. The Imperative Military Need for Portable Power and the Critical Problems With Power Today

    DTIC Science & Technology

    2011-04-01

    cadmium by rechargeable lithium ), or (2) it is considered a “use as is” technology (i.e., alkaline or lithium thionyl chloride batteries ). For...of the investment changes. For example, the non-rechargeable lithium air battery is currently “red” meaning that the investment needs to be in...vehicles, communications, sensors, and displays. The price for this technology is power and the requirement for batteries and other sources of power

  18. Design of a Compact, Portable Test System for Thermoelectric Power Generator Modules

    NASA Astrophysics Data System (ADS)

    Faraji, Amir Yadollah; Akbarzadeh, Aliakbar

    2013-07-01

    Measurement of fundamental parameters of a thermoelectric generator (TEG) module, including efficiency, internal electrical resistance, thermal resistance, power output, Seebeck coefficient, and figure of merit ( Z), is necessary in order to design a thermoelectric-based power generation system. This paper presents a new design for a compact, standalone, portable test system that enables measurement of the main parameters of a TEG over a wide range of temperature differences and compression pressures for a 40 mm × 40 mm specimen. The Seebeck coefficient and figure of merit can also be calculated from the information obtained. In the proposed system, the temperature of each side of the TEG can be set at the desired temperature—the hot side as high as 380°C and the cold side as low as 5°C, with 0.5°C accuracy—utilizing an electrical heating system and a thermoelectric-based compact chilling system. Heating and cooling procedures are under control of two proportional-integral-derivative (PID) temperature controllers. Using a monitored pressure mechanism, the TEG specimen is compressed between a pair of hot and cold aluminum cubes, which maintain the temperature difference across the two sides of the TEG. The compressive load can be varied from 0 kPa to 800 kPa. External electrical loading is applied in the form of a direct-current (DC) electronic load. Data collection and processing are through an Agilent 34972A data logger, a computer, and BenchLink software, with results available as computer output. The input power comes from a 240-V general-purpose power point, and the only sound-generating component is a 4-W cooling fan. Total calculated uncertainty in results is approximately 7%. Comparison between experimental data and the manufacturer's published datasheet for a commercially available specimen shows good agreement. These results obtained from a preliminary experimental setup serve as a good guide for the design of a fully automatic portable test system

  19. Progress towards an Optimization Methodology for Combustion-Driven Portable Thermoelectric Power Generation Systems

    SciTech Connect

    Krishnan, Shankar; Karri, Naveen K.; Gogna, Pawan K.; Chase, Jordan R.; Fleurial, Jean-Pierre; Hendricks, Terry J.

    2012-03-13

    Enormous military and commercial interests exist in developing quiet, lightweight, and compact thermoelectric (TE) power generation systems. This paper investigates design integration and analysis of an advanced TE power generation system implementing JP-8 fueled combustion and thermal recuperation. Design and development of a portable TE power system using a JP-8 combustor as a high temperature heat source and optimal process flows depend on efficient heat generation, transfer, and recovery within the system are explored. Design optimization of the system required considering the combustion system efficiency and TE conversion efficiency simultaneously. The combustor performance and TE sub-system performance were coupled directly through exhaust temperatures, fuel and air mass flow rates, heat exchanger performance, subsequent hot-side temperatures, and cold-side cooling techniques and temperatures. Systematic investigation of this system relied on accurate thermodynamic modeling of complex, high-temperature combustion processes concomitantly with detailed thermoelectric converter thermal/mechanical modeling. To this end, this work reports on design integration of systemlevel process flow simulations using commercial software CHEMCADTM with in-house thermoelectric converter and module optimization, and heat exchanger analyses using COMSOLTM software. High-performance, high-temperature TE materials and segmented TE element designs are incorporated in coupled design analyses to achieve predicted TE subsystem level conversion efficiencies exceeding 10%. These TE advances are integrated with a high performance microtechnology combustion reactor based on recent advances at the Pacific Northwest National Laboratory (PNNL). Predictions from this coupled simulation established a basis for optimal selection of fuel and air flow rates, thermoelectric module design and operating conditions, and microtechnology heat-exchanger design criteria. This paper will discuss this

  20. A portable needle-free jet injector based on a custom high power-density voice-coil actuator.

    PubMed

    Taberner, Andrew J; Ball, Nathan B; Hogan, N Catherine; Hunter, Ian W

    2006-01-01

    We have constructed a portable needle-free drug injection (NFI) device based upon a custom voice-coil linear actuator. Our actuator is optimized to provide high instantaneous force (>200 N) and power (4 kW) while still allowing a total stroke of 25 mm. The actuator is relatively inexpensive, compact, and lightweight, allowing it to serve as the force generator in a portable, reusable, handheld NFI system. The actuator is capable of accelerating liquid drug in quantities of up to 250 microL to a speed of more than 200 ms(-1). The repeatability of a 50 microL volume ejection is better than +/-1 microL.

  1. Quality and operations of portable X-ray examination procedures in the emergency room: queuing theory at work.

    PubMed

    Abujudeh, Hani; Vuong, Bill; Baker, Stephen R

    2005-07-01

    The objective of this study was to evaluate the operation of the portable X-ray machine in relation to examinations ordered by the Emergency Department at the University of Medicine and Dentistry of New Jersey, as well as to identify any bottlenecks hindering the performance of the aforementioned system. To do so, the activity of the portable X-ray was monitored in the period from 8 June 2004 to 24 June 2004, as well as from 6 July 2004 to 12 July 2004, yielding 11 days of data and 116 individual X-ray examinations. During observation times was noted for various checkpoints in the procedure. Using the data gathered, the average input, output, processing times, and variance were calculated. In turn, these values were used to calculate the response times for the Ordering Phase (5.502 min), traveling (2.483 min), Examination Phase (4.453 min), returning (3.855 min), Order Processing Phase (2.962 min), and the Development Phase (3.437 min). These phases were combined for a total of 22.721 min from the time the examination was placed to the time the X-ray films were uploaded to the PACS computer network. Based on these calculations, the Ordering Phase was determined to be the single largest bottleneck in the portable X-ray system. The Examination Phase also represented the second largest bottleneck for a combined total of 44% of the total response time.

  2. Autonomous portable pulsed-periodical generator of high-power radiofrequency-pulses based on gas discharge with hollow cathode.

    PubMed

    Bulychev, Sergey V; Dubinov, Alexander E; L'vov, Igor L; Popolev, Vyacheslav L; Sadovoy, Sergey A; Sadchikov, Eugeny A; Selemir, Victor D; Valiulina, Valeria K; Vyalykh, Dmitry V; Zhdanov, Victor S

    2016-05-01

    Portable autonomous generator of high-power RF-pulses based on the gas discharge with hollow cathode has been designed, fabricated, and tested. Input and output characteristics are the following: discharge current amplitude is 800 A, duration of generated RF-pulses is 350 ns, carrier frequency is ∼90 MHz, power in RF-pulse is 0.5 MW, pulse repetition rate is 0.5 kHz, and device efficiency is ∼25%.

  3. An integrated MEMS infrastructure for fuel processing: hydrogen generation and separation for portable power generation

    NASA Astrophysics Data System (ADS)

    Varady, M. J.; McLeod, L.; Meacham, J. M.; Degertekin, F. L.; Fedorov, A. G.

    2007-09-01

    Portable fuel cells are an enabling technology for high efficiency and ultra-high density distributed power generation, which is essential for many terrestrial and aerospace applications. A key element of fuel cell power sources is the fuel processor, which should have the capability to efficiently reform liquid fuels and produce high purity hydrogen that is consumed by the fuel cells. To this end, we are reporting on the development of two novel MEMS hydrogen generators with improved functionality achieved through an innovative process organization and system integration approach that exploits the advantages of transport and catalysis on the micro/nano scale. One fuel processor design utilizes transient, reverse-flow operation of an autothermal MEMS microreactor with an intimately integrated, micromachined ultrasonic fuel atomizer and a Pd/Ag membrane for in situ hydrogen separation from the product stream. The other design features a simpler, more compact planar structure with the atomized fuel ejected directly onto the catalyst layer, which is coupled to an integrated hydrogen selective membrane.

  4. Reliability and availability analysis of low power portable direct methanol fuel cells

    NASA Astrophysics Data System (ADS)

    Sisworahardjo, N. S.; Alam, M. S.; Aydinli, G.

    This paper presents a methodology for modeling and calculating the reliability and availability of low power portable direct methanol fuel cells (DMFCs). System reliability and availability are critical factors for improving market acceptance and for determining the competitiveness of the low power DMFC. Two techniques have been used for analyzing the system reliability and availability requirements for various system components. Reliability block diagram (RBD) is formed based on the failure rates of irreparable system components. A state-space method is developed to calculate system availability using the Markov model (MM). The state-space method incorporates three different states-operational, derated, and fully faulted states. Since most system components spend their lifetime in performing normal functional task, this research is focused mainly on this operational period. The failure and repair rates for repairable DMFC systems are estimated on the basis of a homogeneous Poisson process (HPP) and exponential distribution. Extensive analytical modeling and simulation study has been performed to verify the effectiveness of the proposed technique.

  5. 46 CFR 169.829 - Emergency lighting and power systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Emergency lighting and power systems. 169.829 Section... SCHOOL VESSELS Operations Tests, Drills, and Inspections § 169.829 Emergency lighting and power systems. (a) Where fitted, the master shall have the emergency lighting and power systems operated and...

  6. 78 FR 36278 - Fuel Oil Systems for Emergency Power Supplies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-17

    ... COMMISSION Fuel Oil Systems for Emergency Power Supplies AGENCY: Nuclear Regulatory Commission. ACTION... Regulatory Guide (RG) 1.137, ``Fuel Oil Systems for Emergency Power Supplies.'' Revision 2 of RG 1.137... systems for emergency diesel generators used in nuclear power plants. The methods described in ANSI/ANS 59...

  7. 46 CFR 169.829 - Emergency lighting and power systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Emergency lighting and power systems. 169.829 Section... SCHOOL VESSELS Operations Tests, Drills, and Inspections § 169.829 Emergency lighting and power systems. (a) Where fitted, the master shall have the emergency lighting and power systems operated and...

  8. 46 CFR 169.829 - Emergency lighting and power systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Emergency lighting and power systems. 169.829 Section... SCHOOL VESSELS Operations Tests, Drills, and Inspections § 169.829 Emergency lighting and power systems. (a) Where fitted, the master shall have the emergency lighting and power systems operated and...

  9. 46 CFR 169.829 - Emergency lighting and power systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Emergency lighting and power systems. 169.829 Section... SCHOOL VESSELS Operations Tests, Drills, and Inspections § 169.829 Emergency lighting and power systems. (a) Where fitted, the master shall have the emergency lighting and power systems operated and...

  10. 46 CFR 169.829 - Emergency lighting and power systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Emergency lighting and power systems. 169.829 Section... SCHOOL VESSELS Operations Tests, Drills, and Inspections § 169.829 Emergency lighting and power systems. (a) Where fitted, the master shall have the emergency lighting and power systems operated and...

  11. 46 CFR 131.525 - Emergency lighting and power.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Emergency lighting and power. 131.525 Section 131.525..., Drills, and Inspections § 131.525 Emergency lighting and power. (a) The master of each vessel shall ensure that the emergency lighting and power systems are tested at least once each week that the vessel...

  12. 46 CFR 131.525 - Emergency lighting and power.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Emergency lighting and power. 131.525 Section 131.525..., Drills, and Inspections § 131.525 Emergency lighting and power. (a) The master of each vessel shall ensure that the emergency lighting and power systems are tested at least once each week that the vessel...

  13. 46 CFR 131.525 - Emergency lighting and power.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Emergency lighting and power. 131.525 Section 131.525..., Drills, and Inspections § 131.525 Emergency lighting and power. (a) The master of each vessel shall ensure that the emergency lighting and power systems are tested at least once each week that the vessel...

  14. 46 CFR 131.525 - Emergency lighting and power.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Emergency lighting and power. 131.525 Section 131.525..., Drills, and Inspections § 131.525 Emergency lighting and power. (a) The master of each vessel shall ensure that the emergency lighting and power systems are tested at least once each week that the vessel...

  15. 46 CFR 131.525 - Emergency lighting and power.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Emergency lighting and power. 131.525 Section 131.525..., Drills, and Inspections § 131.525 Emergency lighting and power. (a) The master of each vessel shall ensure that the emergency lighting and power systems are tested at least once each week that the vessel...

  16. 46 CFR 28.870 - Emergency source of electrical power.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Emergency source of electrical power. 28.870 Section 28... COMMERCIAL FISHING INDUSTRY VESSELS Aleutian Trade Act Vessels § 28.870 Emergency source of electrical power. (a) The following electrical loads must be connected to an independent emergency source of power...

  17. 46 CFR 28.870 - Emergency source of electrical power.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Emergency source of electrical power. 28.870 Section 28... COMMERCIAL FISHING INDUSTRY VESSELS Aleutian Trade Act Vessels § 28.870 Emergency source of electrical power. (a) The following electrical loads must be connected to an independent emergency source of power...

  18. Portable, lightweight, low power, ion chromatographic system with open tubular capillary columns.

    PubMed

    Kiplagat, Isaac K; Kubán, Petr; Pelcová, Pavlína; Kubán, Vlastimil

    2010-07-30

    Basic operation principles of a lightweight, low power, low cost, portable ion chromatograph utilizing open tubular ion chromatography in capillary columns coated with multi-layer polymeric stationary phases are demonstrated. A minimalistic configuration of a portable IC instrument was developed that does not require any chromatographic eluent delivery system, nor sample injection device as it uses gravity-based eluent flow and hydrodynamic sample injection adopted from capillary electrophoresis. As a detection device, an inexpensive commercially available capacitance sensor is used that has been shown to be a suitable substitute for contactless conductivity detection in capillary separation systems. The built-in temperature sensor allows for baseline drift correction typically encountered in conductivity/capacitance measurements without thermostating device. The whole instrument does not require any power supply for its operation, except the detection and data acquisition part that is provided by a USB port of a Netbook computer. It is extremely lightweight, its total weight including the Netbook computer is less than 2.5kg and it can be continuously operated for more than 8h. Several parameters of the instrument, such as detection cell design, eluent delivery systems and data treatment were optimized as well as the composition of eluent for non-suppressed ion chromatographic analysis of common inorganic cations (Na(+), NH(4)(+), K(+), Cs(+), Ca(2+), Mg(2+), transition metals). Low conductivity eluents based on weakly complexing organic acids such as tartaric, oxalic or pyridine-2,6-dicarboxylic acids were used with contactless capacitance detection for simultaneous separation of mono- and divalent cations. Separation of Na(+) and NH(4)(+) cations was optimized by addition of 18-crown-6 to the eluent. The best separation of 6 metal cations commonly present in various environmental samples was accomplished in less than 30min using a 1.75mM pyridine-2,6-dicarboxylic

  19. Development of a portable life support system and emergency life support pack

    NASA Technical Reports Server (NTRS)

    1970-01-01

    The design, development, and fabrication of a feasibility model of a breathing bag life support system for extravehicular activity are discussed. The breathing vest and back pack portable life support system contains connectors which allow external water and gas supply. At a metabolic rate of 2000 BTU per hour, the two low pressure bottles provide 27 minutes of breathing gas for a total filled system weight of 30.5 pounds.

  20. Low-voltage and low-power circuit design for mixed analog/digital systems in portable equipment

    NASA Astrophysics Data System (ADS)

    Matsuzawa, Akira

    1994-04-01

    This paper describes low-voltage and low-power (LV/LP) circuit design for both analog LSI's and digital LSI's which are used in mixed analog/digital systems in portable equipment. We review some LV/LP circuits used in digital LSI's, such as general logic gate, DSP, and DRAM, and others used in analog LSI's, such as operational amplifiers, video-signal processing circuits, A/D and D/A converters, filters, and RF circuits, along with a wide range of items used in recently developed LSI's. Since analog circuits have fundamental difficulties for reducing the operating voltage and the power consumption, in spite of recent progress in LV/LP circuit techniques, these difficulties will be a major issue for decreasing the total power consumption of some mixed analog/digital systems used in portable equipment.

  1. 46 CFR 28.375 - Emergency source of electrical power.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Emergency source of electrical power. 28.375 Section 28... power. (a) Each vessel must have an emergency source of electrical power which is independent of the main sources of electrical power and which is located outside the main machinery space. (b)...

  2. 46 CFR 28.375 - Emergency source of electrical power.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Emergency source of electrical power. 28.375 Section 28... power. (a) Each vessel must have an emergency source of electrical power which is independent of the main sources of electrical power and which is located outside the main machinery space. (b)...

  3. 46 CFR 28.375 - Emergency source of electrical power.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Emergency source of electrical power. 28.375 Section 28... power. (a) Each vessel must have an emergency source of electrical power which is independent of the main sources of electrical power and which is located outside the main machinery space. (b)...

  4. Power sources for portable electronics and hybrid cars: lithium batteries and fuel cells.

    PubMed

    Scrosati, Bruno

    2005-01-01

    The activities in progress in our laboratory for the development of batteries and fuel cells for portable electronics and hybrid car applications are reviewed and discussed. In the case of lithium batteries, the research has been mainly focused on the characterization of new electrode and electrolyte materials. Results related to disordered carbon anodes and improved, solvent-free, as well as gel-type, polymer electrolytes are particularly stressed. It is shown that the use of proper gel electrolytes, in combination with suitable electrode couples, allows the development of new types of safe, reliable, and low-cost lithium ion batteries which appear to be very promising power sources for hybrid vehicles. Some of the technologies proven to be successful in the lithium battery area are readapted for use in fuel cells. In particular, this approach has been followed for the preparation of low-cost and stable protonic membranes to be proposed as an alternative to the expensive, perfluorosulfonic membranes presently used in polymer electrolyte membrane fuel cells (PEMFCs). Copyright 2005 The Japan Chemical Journal Forum and Wiley Periodicals, Inc

  5. A low-power portable ECG sensor interface with dry electrodes

    NASA Astrophysics Data System (ADS)

    Xiaofei, Pu; Lei, Wan; Hui, Zhang; Yajie, Qin; Zhiliang, Hong

    2013-05-01

    This paper describes a low-power portable sensor interface dedicated to sensing and processing electrocardiogram (ECG) signals. Dry electrodes were employed in this ECG sensor, which eliminates the need of conductive gel and avoids complicated and mandatory skin preparation before electrode attachment. This ECG sensor system consists of two ICs, an analog front-end (AFE) and a successive approximation register analog-to-digital converter (SAR ADC) containing a relaxation oscillator. This proposed design was fabricated in a 0.18 μm 1P6M standard CMOS process. The AFE for extracting the biopotential signals is essential in this ECG sensor. In measurements, the AFE obtains a mid-band gain of 45 dB, a bandwidth from 0.6 to 160 Hz, and a total input referred noise of 2.8 μV rms while consuming 1 μW from the 1.8 V supply. The noise efficiency factor (NEF) of our design is 3.4. After conditioning, the amplified ECG signal is digitized by a 12-bit SAR ADC with 61.8 dB SNDR and 220 fJ/conversion-step. Finally, a complete ECG sensor interface with three dry copper electrodes is demonstrated in real-word setting, showing successful recordings of a capture ECG waveform.

  6. A low-power bio-potential acquisition system with flexible PDMS dry electrodes for portable ubiquitous healthcare applications.

    PubMed

    Chen, Chih-Yuan; Chang, Chia-Lin; Chang, Chih-Wei; Lai, Shin-Chi; Chien, Tsung-Fu; Huang, Hong-Yi; Chiou, Jin-Chern; Luo, Ching-Hsing

    2013-03-04

    This work describes a bio-potential acquisition system for portable ubiquitous healthcare applications using flexible polydimethylsiloxane dry electrodes (FPDEs) and a low-power recording circuit. This novel FPDE used Au as the skin contact layer, which was made using a CO2 laser and replica method technology. The FPDE was revised from a commercial bio-potential electrode with a conductive snap using dry electrodes rather than wet electrodes that proposed reliable and robust attachment for the purpose of measurement, and attaching velcro made it wearable on the forearm for bio-potential applications. Furthermore, this study proposes a recording device to store bio-potential signal data and provides portability and low-power consumption for the proposed acquisition system. To acquire differential bio-potentials, such as electrocardiogram (ECG) signals, the proposed recording device includes a low-power front-end acquisition chip fabricated using a complementary metal-oxide-semiconductor (CMOS) process, a commercial microcontroller (MSP430F149), and a secure digital (SD) card for portable healthcare applications. The proposed system can obtain ECG signals efficiently and are comfortable to the skin. The power consumption of the system is about 85 mW for continuous working over a 3 day period with two AA batteries. It can also be used as a compact Holter ECG system.

  7. Modulation of anticipatory postural adjustments of gait using a portable powered ankle-foot orthosis.

    PubMed

    Petrucci, Matthew N; MacKinnon, Colum D; Hsiao-Wecksler, Elizabeth T

    2013-06-01

    Prior to taking a step, properly coordinated anticipatory postural adjustments (APAs) are generated to control posture and balance as the body is propelled forward. External cues (audio, visual, somatosensory) have been shown to facilitate gait initiation by improving the magnitude and timing of APAs in Parkinson's disease (PD), but the efficacy of these cueing strategies has been limited by their inability to produce the forces required to generate an appropriate APA. To date, mechanical cueing paradigms have been relatively underexplored. Using healthy young adults, we investigated the use of a portable powered ankle-foot orthosis (PPAFO) to provide a modest torque at the ankle as a mechanical cue to initiate gait. Subjects were instructed to initiate gait in five test conditions: (1) self-initiated in running shoes [baseline-shoe], (2) self-initiated trial in unpowered passive PPAFO [baseline-passive], (3) with acoustic go-cue in passive PPAFO [acoustic-passive], (4) acoustic go-cue and simultaneous mechanical assist from powered PPAFO [acoustic-assist], and (5) mechanical assist cue only [assist]. APA characteristics were quantified using ground reaction force (GRF), center of pressure (COP), and electromyography (EMG) data. Mechanical cueing significantly increased medial-lateral COP and GRF peak amplitude, and decreased GRF time to peak amplitude, COP and GRF onset times, and time to toe off. Mechanical cueing conditions also demonstrated consistent bimodal EMG behaviors across all subjects. Overall, these data suggest that the mechanical assist from the PPAFO can significantly improve APA timing parameters and increase APA force production in healthy young adults.

  8. Satellite sound broadcasting system, portable reception

    NASA Technical Reports Server (NTRS)

    Golshan, Nasser; Vaisnys, Arvydas

    1990-01-01

    Studies are underway at JPL in the emerging area of Satellite Sound Broadcast Service (SSBS) for direct reception by low cost portable, semi portable, mobile and fixed radio receivers. This paper addresses the portable reception of digital broadcasting of monophonic audio with source material band limited to 5 KHz (source audio comparable to commercial AM broadcasting). The proposed system provides transmission robustness, uniformity of performance over the coverage area and excellent frequency reuse. Propagation problems associated with indoor portable reception are considered in detail and innovative antenna concepts are suggested to mitigate these problems. It is shown that, with the marriage of proper technologies a single medium power satellite can provide substantial direct satellite audio broadcast capability to CONUS in UHF or L Bands, for high quality portable indoor reception by low cost radio receivers.

  9. 21 CFR 868.5925 - Powered emergency ventilator.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...) Identification. A powered emergency ventilator is a demand valve or inhalator intended to provide emergency respiratory support by means of a face mask or a tube inserted into a patient's airway. (b) Classification...

  10. A Portable Low-Power Acquisition System with a Urease Bioelectrochemical Sensor for Potentiometric Detection of Urea Concentrations

    PubMed Central

    Ma, Wei-Jhe; Luo, Ching-Hsing; Lin, Jiun-Ling; Chou, Sin-Houng; Chen, Ping-Hung; Syu, Mei-Jywan; Kuo, Shin-Hung; Lai, Shin-Chi

    2016-01-01

    This paper presents a portable low-power battery-driven bioelectrochemical signal acquisition system for urea detection. The proposed design has several advantages, including high performance, low cost, low-power consumption, and high portability. A LT1789-1 low-supply-voltage instrumentation amplifier (IA) was used to measure and amplify the open-circuit potential (OCP) between the working and reference electrodes. An MSP430 micro-controller was programmed to process and transduce the signals to the custom-developed software by ZigBee RF module in wireless mode and UART in able mode. The immobilized urease sensor was prepared by embedding urease into the polymer (aniline-co-o-phenylenediamine) polymeric matrix and then coating/depositing it onto a MEMS-fabricated Au working electrode. The linear correlation established between the urea concentration and the potentiometric change is in the urea concentrations range of 3.16 × 10−4 to 3.16 × 10−2 M with a sensitivity of 31.12 mV/log [M] and a precision of 0.995 (R2 = 0.995). This portable device not only detects urea concentrations, but can also operate continuously with a 3.7 V rechargeab-le lithium-ion battery (500 mA·h) for at least four days. Accordingly, its use is feasible and even promising for home-care applications. PMID:27049390

  11. A Portable Low-Power Acquisition System with a Urease Bioelectrochemical Sensor for Potentiometric Detection of Urea Concentrations.

    PubMed

    Ma, Wei-Jhe; Luo, Ching-Hsing; Lin, Jiun-Ling; Chou, Sin-Houng; Chen, Ping-Hung; Syu, Mei-Jywan; Kuo, Shin-Hung; Lai, Shin-Chi

    2016-04-02

    This paper presents a portable low-power battery-driven bioelectrochemical signal acquisition system for urea detection. The proposed design has several advantages, including high performance, low cost, low-power consumption, and high portability. A LT1789-1 low-supply-voltage instrumentation amplifier (IA) was used to measure and amplify the open-circuit potential (OCP) between the working and reference electrodes. An MSP430 micro-controller was programmed to process and transduce the signals to the custom-developed software by ZigBee RF module in wireless mode and UART in able mode. The immobilized urease sensor was prepared by embedding urease into the polymer (aniline-co-o-phenylenediamine) polymeric matrix and then coating/depositing it onto a MEMS-fabricated Au working electrode. The linear correlation established between the urea concentration and the potentiometric change is in the urea concentrations range of 3.16 × 10(-4) to 3.16 × 10(-2) M with a sensitivity of 31.12 mV/log [M] and a precision of 0.995 (R² = 0.995). This portable device not only detects urea concentrations, but can also operate continuously with a 3.7 V rechargeab-le lithium-ion battery (500 mA·h) for at least four days. Accordingly, its use is feasible and even promising for home-care applications.

  12. Architectural innovation foresight of thermoelectric generator charger integrated portable power supply for portable consumer electronic device in metropolitan market: The case study of Thailand

    NASA Astrophysics Data System (ADS)

    Maolikul, S.; Kiatgamolchai, S.; Chavarnakul, T.

    2012-06-01

    In the context of information and communication technology (ICT) trend for worldwide individuals, social life becomes digital and portable consumer electronic devices (PCED) powered by conventional power supply from batteries have been evolving through miniaturization and various function integration. Thermoelectric generators (TEG) were hypothesized for its potential role of battery charger to serve the shining PCED market. Hence, this paper, mainly focusing at the metropolitan market in Thailand, aimed to conduct architectural innovation foresight and to develop scenarios on potential exploitation approach of PCED battery power supply with TEG charger converting power from ambient heat source adjacent to individual's daily life. After technical review and assessment for TEG potential and battery aspect, the business research was conducted to analyze PCED consumer behavior for their PCED utilization pattern, power supply lack problems, and encountering heat sources/sinks in 3 modes: daily life, work, and leisure hobbies. Based on the secondary data analysis from literature and National Statistical Office of Thailand, quantitative analysis was applied using the cluster probability sampling methodology, statistically, with the sample size of 400 at 0.05 level of significance. In addition, the qualitative analysis was conducted to emphasize the rationale of consumer's behavior using in-depth qualitative interview. Scenario planning technique was also used to generate technological and market trend foresight. Innovation field and potential scenario for matching technology with market was proposed in this paper. The ingredient for successful commercialization of battery power supply with TEG charger for PCED market consists of 5 factors as follows: (1) PCED characteristic, (2) potential ambient heat sources/sinks, (3) battery module, (4) power management module, and the final jigsaw (5) characteristic and adequate arrangement of TEG modules. The foresight outcome for

  13. Embedded ensemble propagation for improving performance, portability, and scalability of uncertainty quantification on emerging computational architectures

    DOE PAGES

    Phipps, Eric T.; D'Elia, Marta; Edwards, Harold C.; ...

    2017-04-18

    In this study, quantifying simulation uncertainties is a critical component of rigorous predictive simulation. A key component of this is forward propagation of uncertainties in simulation input data to output quantities of interest. Typical approaches involve repeated sampling of the simulation over the uncertain input data, and can require numerous samples when accurately propagating uncertainties from large numbers of sources. Often simulation processes from sample to sample are similar and much of the data generated from each sample evaluation could be reused. We explore a new method for implementing sampling methods that simultaneously propagates groups of samples together in anmore » embedded fashion, which we call embedded ensemble propagation. We show how this approach takes advantage of properties of modern computer architectures to improve performance by enabling reuse between samples, reducing memory bandwidth requirements, improving memory access patterns, improving opportunities for fine-grained parallelization, and reducing communication costs. We describe a software technique for implementing embedded ensemble propagation based on the use of C++ templates and describe its integration with various scientific computing libraries within Trilinos. We demonstrate improved performance, portability and scalability for the approach applied to the simulation of partial differential equations on a variety of CPU, GPU, and accelerator architectures, including up to 131,072 cores on a Cray XK7 (Titan).« less

  14. 77 FR 48177 - Fuel Oil Systems for Emergency Power Supplies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-13

    ... COMMISSION Fuel Oil Systems for Emergency Power Supplies AGENCY: Nuclear Regulatory Commission. ACTION: Draft... Regulatory Commission (NRC or the Commission) issued Draft Regulatory Guide, DG- 1282, ``Fuel Oil Systems for Emergency Power Supplies,'' in the Federal Register for a 60 day public comment period. The NRC is extending...

  15. 46 CFR 28.870 - Emergency source of electrical power.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Emergency source of electrical power. 28.870 Section 28.870 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY UNINSPECTED VESSELS REQUIREMENTS FOR COMMERCIAL FISHING INDUSTRY VESSELS Aleutian Trade Act Vessels § 28.870 Emergency source of electrical power...

  16. Optimizing membrane electrode assembly of direct methanol fuel cells for portable power

    NASA Astrophysics Data System (ADS)

    Liu, Fuqiang

    Direct methanol fuel cells (DMFCs) for portable power applications require high power density, high-energy conversion efficiency and compactness. These requirements translate to fundamental properties of high methanol oxidation and oxygen reduction kinetics, as well as low methanol and water crossover. In this thesis a novel membrane electrode assembly (MEA) for direct methanol fuel cells has been developed, aiming to improve these fundamental properties. Firstly, methanol oxidation kinetics has been enhanced and methanol crossover has been minimized by proper control of ionomer crystallinity and its swelling in the anode catalyst layer through heat-treatment. Heat-treatment has a major impact on anode characteristics. The short-cured anode has low ionomer crystallinity, and thus swells easily when in contact with methanol solution to create a much denser anode structure, giving rise to higher methanol transport resistance than the long-cured anode. Variations in interfacial properties in the anode catalyst layer (CL) during cell conditioning were also characterized, and enhanced kinetics of methanol oxidation and severe limiting current phenomenon were found to be caused by a combination of interfacial property variations and swelling of ionomer over time. Secondly, much effort has been expended to develop a cathode CL suitable for operation under low air stoichiometry. The effects of fabrication procedure, ionomer content, and porosity distribution on the microstructure and cathode performance under low air stoichiometry are investigated using electrochemical and surface morphology characterizations to reveal the correlation between microstructure and electrochemical behavior. At the same time, computational fluid dynamics (CFD) models of DMFC cathodes have been developed to theoretically interpret the experimental results, to investigate two-phase transport, and to elucidate mechanism of cathode mixed potential due to methanol crossover. Thirdly, a MEA with low

  17. Portable Simulator for On-Board International Space Station Emergency Training

    NASA Technical Reports Server (NTRS)

    Bolt, Kathy; Root, Michael

    2014-01-01

    The crew on-board the International Space Station (ISS) have to be prepared for any possible emergency. The emergencies of most concern are a fire, depressurization or a toxic atmosphere. The crew members train on the ground before launch but also need to practice their emergency response skills while they are on orbit for 6 months. On-Board Training (OBT) events for emergency response proficiency used to require the crew and ground teams to use paper "scripts" that showed the path through the emergency procedures. This was not very realistic since the participants could read ahead and never deviate from this scripted path. The new OBT emergency simulator allows the crew to view dynamic information on an iPad only when it would become available during an event. The simulator interface allows the crew member to indicate hatch closures, don and doff masks, read pressures, and sample smoke or atmosphere levels. As the crew executes their actions using the on-board simulator, the ground teams are able to monitor those actions via ground display data flowing through the ISS Ku Band communication system which syncs the on-board simulator software with a ground simulator which is accessible in all the control centers. The OBT Working Group (OBT WG), led by the Chief Training Office (CTO) at Johnson Space center is a Multilateral working group with partners in Russia, Japan, Germany and U.S.A. The OBTWG worked together to create a simulator based on these principles: (a) Create a dynamic simulation that gives real-time data feedback; (b) Maintain real-time interface between Mission Control Centers and crew during OBTs; (c) Provide flexibility for decision making during drill execution; (d) Materially reduce Instructor and Flight Control Team man-hour costs involved with developing, updating, and maintaining emergency OBT cases/scenarios; and (e) Introduce an element of surprise to emergency scenarios so the team can't tell the outcome of the case by reading ahead in a

  18. 300 WATT PORTABLE THERMOELECTRIC GENERATOR.

    DTIC Science & Technology

    GENERATORS , *ELECTRIC POWER PRODUCTION, POWER SUPPLIES, THERMOELECTRICITY, THERMOELECTRICITY, PORTABLE EQUIPMENT, THERMOCOUPLES, ENERGY CONVERSION, LIFE EXPECTANCY(SERVICE LIFE), HEAT TRANSFER, VOLTAGE REGULATORS.

  19. 46 CFR 112.05-5 - Emergency power source.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... with § 112.05-1(c). Table 112.05-5(a) Size of vessel and service Type of emergency power source or... power source (automatically connected storage battery or an automatically started generator) 36 hours.1... power source (automatically connected storage battery or an automatically started generator) 8 hours or...

  20. Portable raman explosives detection

    SciTech Connect

    Moore, David Steven; Scharff, Robert J

    2008-01-01

    Recent advances in portable Raman instruments have dramatically increased their application to emergency response and forensics, as well as homeland defense. This paper reviews the relevant attributes and disadvantages of portable Raman spectroscopy, both essentially and instrumentally, to the task of explosives detection in the field.

  1. A portable, low-power, wireless two-lead EKG system.

    PubMed

    Fulford-Jones, Thaddeus R F; Wei, Gu-Yeon; Welsh, Matt

    2004-01-01

    Sensor devices ("motes") which integrate an embedded microprocessor, low-power radio and a limited amount of storage have the potential to significantly enhance the provision of emergency medical care. Wearable vital sign sensors can wirelessly monitor patient condition, alerting healthcare providers to changes in status while simultaneously delivering data to a backend archival system for longer-term storage. As part of the CodeBlue initiative at Harvard University, we previously developed a mote-based pulse oximetry module which gathers data from a noninvasive finger sensor and transmits it wirelessly to a base station. To expand the capabilities of the mote for healthcare applications we now introduce EKG on Mica2, the first custom-designed electrocardiograph sensor board to interface with this platform. We additionally present VitalEKG, a collection of software components which allow the capture and wireless transmission of heart activity traces. We present preliminary test results which validate our approach and suggest the feasibility of future enhancements.

  2. A small, portable, battery-powered brain-computer interface system for motor rehabilitation.

    PubMed

    McCrimmon, Colin M; Ming Wang; Silva Lopes, Lucas; Wang, Po T; Karimi-Bidhendi, Alireza; Liu, Charles Y; Heydari, Payam; Nenadic, Zoran; Do, An H

    2016-08-01

    Motor rehabilitation using brain-computer interface (BCI) systems may facilitate functional recovery in individuals after stroke or spinal cord injury. Nevertheless, these systems are typically ill-suited for widespread adoption due to their size, cost, and complexity. In this paper, a small, portable, and extremely cost-efficient (<;$200) BCI system has been developed using a custom electroencephalographic (EEG) amplifier array, and a commercial microcontroller and touchscreen. The system's performance was tested using a movement-related BCI task in 3 able-bodied subjects with minimal previous BCI experience. Specifically, subjects were instructed to alternate between relaxing and dorsiflexing their right foot, while their EEG was acquired and analyzed in real-time by the BCI system to decode their underlying movement state. The EEG signals acquired by the custom amplifier array were similar to those acquired by a commercial amplifier (maximum correlation coefficient ρ=0.85). During real-time BCI operation, the average correlation between instructional cues and decoded BCI states across all subjects (ρ=0.70) was comparable to that of full-size BCI systems. Small, portable, and inexpensive BCI systems such as the one reported here may promote a widespread adoption of BCI-based movement rehabilitation devices in stroke and spinal cord injury populations.

  3. Portable seat lift

    NASA Technical Reports Server (NTRS)

    Weddendorf, Bruce (Inventor)

    1994-01-01

    A portable seat lift that can help individuals either (1) lower themselves to a sitting position or (2) raise themselves to a standing position is presented. The portable seat lift consists of a seat mounted on a base with two levers, which are powered by a drive unit.

  4. 46 CFR 112.01-10 - Automatic emergency lighting and power system.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Automatic emergency lighting and power system. 112.01-10... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-10 Automatic emergency lighting and power system. An automatic emergency lighting and power system is one in...

  5. 46 CFR 112.01-5 - Manual emergency lighting and power system.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Manual emergency lighting and power system. 112.01-5... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-5 Manual emergency lighting and power system. A manual emergency lighting and power system is one in which a single...

  6. 46 CFR 112.01-10 - Automatic emergency lighting and power system.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Automatic emergency lighting and power system. 112.01-10... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-10 Automatic emergency lighting and power system. An automatic emergency lighting and power system is one in...

  7. 46 CFR 112.01-5 - Manual emergency lighting and power system.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Manual emergency lighting and power system. 112.01-5... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-5 Manual emergency lighting and power system. A manual emergency lighting and power system is one in which a single...

  8. 46 CFR 112.01-10 - Automatic emergency lighting and power system.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Automatic emergency lighting and power system. 112.01-10... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-10 Automatic emergency lighting and power system. An automatic emergency lighting and power system is one in...

  9. 46 CFR 112.01-5 - Manual emergency lighting and power system.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Manual emergency lighting and power system. 112.01-5... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-5 Manual emergency lighting and power system. A manual emergency lighting and power system is one in which a single...

  10. 46 CFR 112.01-5 - Manual emergency lighting and power system.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Manual emergency lighting and power system. 112.01-5... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-5 Manual emergency lighting and power system. A manual emergency lighting and power system is one in which a single...

  11. 46 CFR 112.01-10 - Automatic emergency lighting and power system.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Automatic emergency lighting and power system. 112.01-10... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-10 Automatic emergency lighting and power system. An automatic emergency lighting and power system is one in...

  12. 46 CFR 112.01-5 - Manual emergency lighting and power system.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Manual emergency lighting and power system. 112.01-5... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-5 Manual emergency lighting and power system. A manual emergency lighting and power system is one in which a single...

  13. 46 CFR 112.01-10 - Automatic emergency lighting and power system.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Automatic emergency lighting and power system. 112.01-10... EMERGENCY LIGHTING AND POWER SYSTEMS Definitions of Emergency Lighting and Power Systems § 112.01-10 Automatic emergency lighting and power system. An automatic emergency lighting and power system is one in...

  14. A portable battery powered microfluidic impedance cytometer with smartphone readout: towards personal health monitoring.

    PubMed

    Talukder, Niloy; Furniturewalla, Abbas; Le, Tuan; Chan, Matthew; Hirday, Shreyas; Cao, Xinnan; Xie, Pengfei; Lin, Zhongtian; Gholizadeh, Azam; Orbine, Steve; Javanmard, Mehdi

    2017-06-01

    We present a portable system for personalized blood cell counting consisting of a microfluidic impedance cytometer and portable analog readout electronics, feeding into an analog-to-digital converter (ADC), and being transmitted via Bluetooth to a user-accessible mobile application. We fabricated a microfluidic impedance cytometer with a novel portable analog readout. The novel design of the analog readout, which consists of a lock-in-amplifier followed by a high-pass filter stage for subtraction of drift and DC offset, and a post-subtraction high gain stage, enables detection of particles and cells as small as 1 μm in diameter, despite using a low-end 8-bit ADC. The lock-in-amplifier and the ADC were set up to receive and transmit data from a Bluetooth module. In order to initiate the system, as well as to transmit all of the data, a user friendly mobile application was developed, and a proof-of-concept trial was run on a blood sample. Applications such as personalized health monitoring require robust device operation and resilience to clogging. It is desirable to avoid using channels comparable in size to the particles being detected thus requiring high levels of sensitivity. Despite using low-end off-the-shelf hardware, our sensing platform was capable of detecting changes in impedance as small as 0.032%, allowing detection of 3 μm diameter particles in a 300 μm wide channel. The sensitivity of our system is comparable to that of a high-end bench-top impedance spectrometer when tested using the same sensors. The novel analog design allowed for an instrument with a footprint of less than 80 cm(2). The aim of this work is to demonstrate the potential of using microfluidic impedance spectroscopy for low cost health monitoring. We demonstrated the utility of the platform technology towards cell counting, however, our platform is broadly applicable to assaying wide panels of biomarkers including proteins, nucleic acids, and various cell types.

  15. 46 CFR 112.15-10 - Loads on systems without a temporary emergency power source.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Loads on systems without a temporary emergency power...) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Loads § 112.15-10 Loads on systems without a temporary emergency power source. If there is no temporary emergency power source, the loads...

  16. 46 CFR 112.20-10 - Diesel or gas turbine driven emergency power source.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary and a Final Emergency Power Source § 112.20-10 Diesel or gas turbine driven emergency power source. Simultaneously with the... 46 Shipping 4 2012-10-01 2012-10-01 false Diesel or gas turbine driven emergency power source. 112...

  17. 46 CFR 112.20-10 - Diesel or gas turbine driven emergency power source.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary and a Final Emergency Power Source § 112.20-10 Diesel or gas turbine driven emergency power source. Simultaneously with the... 46 Shipping 4 2011-10-01 2011-10-01 false Diesel or gas turbine driven emergency power source. 112...

  18. 46 CFR 112.15-10 - Loads on systems without a temporary emergency power source.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Loads on systems without a temporary emergency power...) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Loads § 112.15-10 Loads on systems without a temporary emergency power source. If there is no temporary emergency power source, the loads...

  19. 46 CFR 112.20-10 - Diesel or gas turbine driven emergency power source.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary and a Final Emergency Power Source § 112.20-10 Diesel or gas turbine driven emergency power source. Simultaneously with the... 46 Shipping 4 2014-10-01 2014-10-01 false Diesel or gas turbine driven emergency power source. 112...

  20. 46 CFR 112.15-10 - Loads on systems without a temporary emergency power source.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Loads on systems without a temporary emergency power...) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Loads § 112.15-10 Loads on systems without a temporary emergency power source. If there is no temporary emergency power source, the loads...

  1. 46 CFR 112.20-10 - Diesel or gas turbine driven emergency power source.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary and a Final Emergency Power Source § 112.20-10 Diesel or gas turbine driven emergency power source. Simultaneously with the... 46 Shipping 4 2013-10-01 2013-10-01 false Diesel or gas turbine driven emergency power source. 112...

  2. 46 CFR 112.15-10 - Loads on systems without a temporary emergency power source.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Loads on systems without a temporary emergency power...) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Loads § 112.15-10 Loads on systems without a temporary emergency power source. If there is no temporary emergency power source, the loads...

  3. 46 CFR 112.20-10 - Diesel or gas turbine driven emergency power source.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary and a Final Emergency Power Source § 112.20-10 Diesel or gas turbine driven emergency power source. Simultaneously with the... 46 Shipping 4 2010-10-01 2010-10-01 false Diesel or gas turbine driven emergency power source. 112...

  4. 46 CFR 112.15-10 - Loads on systems without a temporary emergency power source.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Loads on systems without a temporary emergency power...) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Loads § 112.15-10 Loads on systems without a temporary emergency power source. If there is no temporary emergency power source, the loads...

  5. A Portable, Low-Power Analyzer and Automated Soil Flux Chamber System for Measuring Wetland GHG Emissions

    NASA Astrophysics Data System (ADS)

    Nickerson, Nick; Kim-Hak, David; McArthur, Gordon

    2017-04-01

    Preservation and restoration of wetlands has the potential to help sequester large amounts of carbon due to the naturally high primary productivity and slow turnover of stored soil carbon. However, the anoxic environmental conditions present in wetland soils are also the largest natural contributor to global methane emissions. While it is well known that wetlands are net carbon sinks over long time scales, given the high global warming potential of methane, the short-term balances between C uptake and storage and loss as CO2 and CH4 need to be carefully considered when evaluating the climate effects of land-use change. It is relatively difficult to measure methane emissions from wetlands with currently available techniques given the temporally and spatially sporadic nature of the processes involved (methanogenesis, methane oxidation, ebullition, etc.). For example, using manual soil flux chambers can often only capture a portion of either the spatial or temporal variability, and often have other disadvantages associated with soil atmosphere disturbance during deployment in these relatively compressible wetland soils. Automated chamber systems offer the advantage of collecting high-resolution time series of gaseous fluxes while reducing some human and method induced biases. Additionally, new laser-based analyzers that can be used in situ alongside automated chambers offer a greater minimum detectable flux than can be achieved using alternative methods such as Gas Chromatography. Until recently these types of automated measurements were limited to areas that had good power coverage, as laser based systems were power intensive and could not easily be supplemented with power from field-available sources such as solar. Recent advances in laser technology has reduced the power needed and made these systems less power intensive and more field portable in the process. Here we present data using an automated chamber system coupled to a portable laser based greenhouse gas

  6. Silicon-based reflective polymer-dispersed LC display for portable low-power applications

    NASA Astrophysics Data System (ADS)

    Van Doorselaer, Geert P. S.; Carchon, Nadine; Van den Steen, Jean; Cuypers, Dieter; Vanfleteren, Jan M.; De Smet, Herbert; Van Calster, Andre

    1999-03-01

    Recently LCOS microdisplays are becoming available for personal IT applications, despite some problems which are less critical in poly silicon or amorphous silicon based displays. The most common problems which must be encountered are the polarization of the pixels and the light shielding of the silicon substrate. In this paper a methods proposed which solves the light shielding and pixel flatness problem. A non-critical back-end processing which can be applied outside the silicon foundry has been developed. The effectiveness of the light shielding on a working demonstrator display is shown. To avoid light losses caused by a polarization filter, a polymer dispersed LC has been chosen. By decreasing the cell gap we made the PDLC voltage compatible with a standard 3 micrometers CMOS process and its response fast enough to be used for video applications. It is shown that this choice is very suited in direct view and portable applications. The realized prototype has 3 bit grey levels and is video compatible and can be used in a number of applications, such as personal viewers, PDAs and data displays.

  7. Validation of a Portable Low-power Deep Brain Stimulation Device through Anxiolytic Effects in a Laboratory Rat Model.

    PubMed

    Kouzani, Abbas Z; Kale, Rajas P; Zarate-Garza, Pablo Patricio; Berk, Michael; Walder, Ken; Tye, Susannah J

    2016-11-15

    Deep brain stimulation (DBS) devices deliver electrical pulses to neural tissue through an electrode. To study the mechanisms and therapeutic benefits of deep brain stimulation, murine preclinical research is necessary. However, conducting naturalistic long-term, uninterrupted animal behavioral experiments can be difficult with bench-top systems. The reduction of size, weight, power consumption, portability, and cost of DBS devices can assist the progress of this research in animal studies. A low power, low weight, miniature DBS device is presented in this paper. This device consists of electronic hardware and software components including a low-power microcontroller, an adjustable current source, an n-channel metal-oxide-semiconductor field-effect transistor, a coin-cell battery, electrode wires and a software program to operate the device. Evaluation of the performance of the device in terms of battery lifetime and device functionality through bench and in vivo tests was conducted. The bench test revealed that this device can deliver continuous stimulation current pulses of strength 200 μA, width 90 μs, and frequency 130 Hz for 22.75 days. The in vivo tests demonstrated that chronic stimulation of the nucleus accumbens (NAc) with this device significantly increased psychomotor activity, together with a dramatic reduction in anxiety-like behavior in the elevated zero-maze test.

  8. A portable thermoelectric-power-generating module composed of oxide devices

    NASA Astrophysics Data System (ADS)

    Funahashi, R.; Mikami, M.; Mihara, T.; Urata, S.; Ando, N.

    2006-03-01

    High power density is a strong point of thermoelectric generation. Exploitation of this salient characteristic would make thermoelectric modules promising candidates for mobile power applications. Here we show how power can be generated using a small thermoelectric module composed of 140 pairs of oxide thermoelectric unicouples. The module weighs 19.8 g and its dimensions are 53 mm long, 32 mm wide, and 5.0 mm thick. The hot-pressed thermoelectric oxide bulk materials used were connected with a Ag paste, incorporating oxide powder, and Ag electrodes. The module's open circuit voltage increases with increasing hot-side temperature (TH) and reaches 4.5 V at a TH of 1072 K in air. No deterioration in output power was seen when power generation was carried out ten times at a TH of 723 K with intermediate cooling to room temperature. The module was successfully used to charge a lithium-ion battery in a mobile phone.

  9. Portable Medical System

    NASA Technical Reports Server (NTRS)

    1982-01-01

    Portable Medical Status and Treatment System (PMSTS) is designed for use in remote areas where considerable time may elapse before a patient can be transported to a hospital. First units were delivered to the Department of Transportation last year and tested in two types of medical emergency environments: one in a rural Pennsylvania community and another aboard a U.S. Coast Guard rescue helicopter operating along Florida's Gulf Coast. The system has the capability to transmit vital signs to a distantly located physician, who can perform diagnosis and relay treatment instructions to the attendant at the scene. The battery powered PMSTS includes a vital signs monitor and a defibrillator. Narco has also developed a companion system, called Porta-Fib III designed for use in a hospital environment with modifications accordingly. Both systems are offshoots of an earlier NASA project known as the Physician's Black Bag developed by Telecare, Inc., a company now acquired by NARCO.

  10. Development of a Portable AC/DC Welding Power Supply Module

    DTIC Science & Technology

    1975-03-01

    proper time sequence to the SCR contactor ( SCR1 to SCR3, Drawing NO . 1001, Figure IV-A). The zero crossover detector consists of a power supply (JR5...as far as circuit operation is concerned. The voltage on the anode of SCR1 then rises to a positive value as the line voltage crosses zero. When the...pulse to the gate of SCR1 C34 then rapidly d i s c h a r g e s . The power supply is a critical part of the circuit operation. The input power comes

  11. Bio-power, Agamben, and emerging nursing knowledge.

    PubMed

    Georges, Jane M

    2008-01-01

    This philosophical article posits that an emerging theme in contemporary nursing epistemology is bio-power and proposes the use of philosopher Giorgio Agamben's perspectives as a useful approach for the future investigation of bio-power in nursing knowledge. Building upon Meleis' characterization of diversity as the most recent "milestone" of contemporary theoretical development of the nursing discipline, selected recent texts from the nursing literature are analyzed, and implications for future nursing knowledge in the context of Agamben's work are explored.

  12. Fuel sensor-less control of a liquid feed fuel cell under dynamic loading conditions for portable power sources (II)

    NASA Astrophysics Data System (ADS)

    Chang, C. L.; Chen, C. Y.; Sung, C. C.; Liou, D. H.; Chang, C. Y.; Cha, H. C.

    This work presents a new fuel sensor-less control scheme for liquid feed fuel cells that is able to control the supply to a fuel cell system for operation under dynamic loading conditions. The control scheme uses cell-operating characteristics, such as potential, current, and power, to regulate the fuel concentration of a liquid feed fuel cell without the need for a fuel concentration sensor. A current integral technique has been developed to calculate the quantity of fuel required at each monitoring cycle, which can be combined with the concentration regulating process to control the fuel supply for stable operation. As verified by systematic experiments, this scheme can effectively control the fuel supply of a liquid feed fuel cell with reduced response time, even under conditions where the membrane electrolyte assembly (MEA) deteriorates gradually. This advance will aid the commercialization of liquid feed fuel cells and make them more adaptable for use in portable and automotive power units such as laptops, e-bikes, and handicap cars.

  13. Emerging US Space Launch, Trends and Space Solar Power

    NASA Technical Reports Server (NTRS)

    Zapata, Edgar

    2015-01-01

    Reviews the state of the art of emerging US space launch and spacecraft. Reviews the NASA budget ascontext, while providing example scenarios. Connects what has been learned in space systems commercial partnershipsto a potential path for consideration by the space solar power community.

  14. System Study: Emergency Power System 1998-2014

    SciTech Connect

    Schroeder, John Alton

    2015-12-01

    This report presents an unreliability evaluation of the emergency power system (EPS) at 104 U.S. commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2014 for selected components were obtained from the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The unreliability results are trended for the most recent 10 year period while yearly estimates for system unreliability are provided for the entire active period. An extremely statistically significant increasing trend was observed for EPS system unreliability for an 8-hour mission. A statistically significant increasing trend was observed for EPS system start-only unreliability.

  15. System Study: Emergency Power System 1998–2013

    SciTech Connect

    Schroeder, John Alton

    2015-02-01

    This report presents an unreliability evaluation of the emergency power system (EPS) at 104 U.S. commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2013 for selected components were obtained from the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The unreliability results are trended for the most recent 10-year period, while yearly estimates for system unreliability are provided for the entire active period. No statistically significant trends were identified in the EPS results.

  16. Portable ammonia-borane-based H2 power-pack for unmanned aerial vehicles

    NASA Astrophysics Data System (ADS)

    Seo, Jung-Eun; Kim, Yujong; Kim, Yongmin; Kim, Kibeom; Lee, Jin Hee; Lee, Dae Hyung; Kim, Yeongcheon; Shin, Seock Jae; Kim, Dong-Min; Kim, Sung-Yug; Kim, Taegyu; Yoon, Chang Won; Nam, Suk Woo

    2014-05-01

    An advanced ammonia borane (AB)-based H2 power-pack is designed to continually drive an unmanned aerial vehicle (UAV) for 57 min using a 200-We polymer electrolyte membrane fuel cell (PEMFC). In a flight test with the UAV platform integrated with the developed power-pack, pure hydrogen with an average flow rate of 3.8 L(H2) min-1 is generated by autothermal H2-release from AB with tetraethylene glycol dimethylether (T4EGDE) as a promoter. During take-off, a hybridized power management system (PMS) consisting of the fuel cell and an auxiliary lithium-ion battery supplies 500 We at full power simultaneously, while the fuel cell alone provides 150-200 We and further recharges the auxiliary battery upon cruising. Gaseous byproducts identified by in situ Fourier transform infrared (FT-IR) spectroscopy during AB dehydrogenation are sequestrated using a mixed absorbent in an H2 purification system. In addition, a real-time monitoring system is employed to determine the remaining filter capacity of the purifier at a ground control system for rapidly responding unpredictable circumstances during flight. Separate experiments are conducted to screen potential materials and methods for enhancing filter capacity in the current H2 refining system. A prospective reactor concept for long-term fuel cell applications is proposed based on the results.

  17. 33 CFR 150.519 - What are the requirements for emergency lighting and power systems?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... emergency lighting and power systems? 150.519 Section 150.519 Navigation and Navigable Waters COAST GUARD... Specialty Equipment Emergency Lighting and Power Systems § 150.519 What are the requirements for emergency lighting and power systems? (a) The operator must test and inspect the emergency lighting and power systems...

  18. 33 CFR 150.519 - What are the requirements for emergency lighting and power systems?

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... emergency lighting and power systems? 150.519 Section 150.519 Navigation and Navigable Waters COAST GUARD... Specialty Equipment Emergency Lighting and Power Systems § 150.519 What are the requirements for emergency lighting and power systems? (a) The operator must test and inspect the emergency lighting and power systems...

  19. 33 CFR 150.519 - What are the requirements for emergency lighting and power systems?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... emergency lighting and power systems? 150.519 Section 150.519 Navigation and Navigable Waters COAST GUARD... Specialty Equipment Emergency Lighting and Power Systems § 150.519 What are the requirements for emergency lighting and power systems? (a) The operator must test and inspect the emergency lighting and power systems...

  20. 33 CFR 150.519 - What are the requirements for emergency lighting and power systems?

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... emergency lighting and power systems? 150.519 Section 150.519 Navigation and Navigable Waters COAST GUARD... Specialty Equipment Emergency Lighting and Power Systems § 150.519 What are the requirements for emergency lighting and power systems? (a) The operator must test and inspect the emergency lighting and power systems...

  1. 33 CFR 150.519 - What are the requirements for emergency lighting and power systems?

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... emergency lighting and power systems? 150.519 Section 150.519 Navigation and Navigable Waters COAST GUARD... Specialty Equipment Emergency Lighting and Power Systems § 150.519 What are the requirements for emergency lighting and power systems? (a) The operator must test and inspect the emergency lighting and power systems...

  2. Comparison of Man-Portable Power Generation Alternatives Based on Fuel-Cell Systems

    DTIC Science & Technology

    2004-12-01

    drocarbons, as well as fuel processing for hydrogen or syngas generation and subsequent oxidation of these intermediates in a fuel cell. Micro power...high temper- atures, under water operation. 4 ALTERNATIVES CONSIDERED As possible fuel/chemicals we consider hydrocar- bons, methanol, ammonia and...production from ammonia decomposition on ruthenium. In- dustrial and Engineering Chemistry Research, 43, 2986–2999. [Douglas(1988)] Douglas, J. M., 1988

  3. Is it possible to design a portable power generator based on micro-solid oxide fuel cells? A finite volume analysis

    NASA Astrophysics Data System (ADS)

    Pla, D.; Sánchez-González, A.; Garbayo, I.; Salleras, M.; Morata, A.; Tarancón, A.

    2015-10-01

    The inherent limited capacity of current battery technology is not sufficient for covering the increasing power requirements of widely extended portable devices. Among other promising alternatives, recent advances in the field of micro-Solid Oxide Fuel Cells (μ-SOFCs) converted this disruptive technology into a serious candidate to power next generations of portable devices. However, the implementation of single cells in real devices, i.e. μ-SOFC stacks coupled to the required balance-of-plant elements like fuel reformers or post combustors, still remains unexplored. This work aims addressing this system-level research by proposing a new compact design of a vertically stacked device fuelled with ethanol. The feasibility and design optimization for achieving a thermally self-sustained regime and a rapid and low-power consuming start-up is studied by finite volume analysis. An optimal thermal insulation strategy is defined to maintain the steady-state operation temperature of the μ-SOFC at 973 K and an external temperature lower than 323 K. A hybrid start-up procedure, based on heaters embedded in the μ-SOFCs and heat released by chemical reactions in the post-combustion unit, is analyzed allowing start-up times below 1 min and energy consumption under 500 J. These results clearly demonstrate the feasibility of high temperature μ-SOFC power systems fuelled with hydrocarbons for portable applications, therefore, anticipating a new family of mobile and uninterrupted power generators.

  4. Portable Dental System

    NASA Technical Reports Server (NTRS)

    1980-01-01

    Portable dental system provides dental care in isolated communities. System includes a patient's chair and a dentist's stool, an X-ray machine and a power unit, all of which fold into compact packages. A large yellow "pumpkin" is a collapsible compressed air tank. Portable system has been used successfully in South America in out of the way communities with this back-packable system, and in American nursing homes. This product is no longer manufactured.

  5. Portable, low-power diagnostics based on integrated photonics and responsive materials

    NASA Astrophysics Data System (ADS)

    Armani, Andrea M.; Amchin, Daniel; Diep, Vinh; Fang, Lea; Gungor, Eda; Hudnut, Alexa; Hudnut, Brock; Lee, Michele; McBirney, Sam; Soltani, Soheil

    2016-09-01

    Responsive or reactive materials offer the possibility for the development of low-power diagnostics for preventative healthcare. We have synthesized and characterized a functional polymeric material which irreversibly cleaves upon exposure to UV light. Because this cleavage is selective to UV wavelength, it could form the foundation of a UV indicator strip, allowing patients healthy and unhealthy populations to monitor their exposure. In a complementary project, we developed an all-fiber polarimetric elastography system for characterizing the mechanical properties of visco-elastic materials, such a tissue, and for correlating this signal with cellular/molecular-level markers.

  6. Reliability of the emergency ac-power system at nuclear power plants

    SciTech Connect

    Battle, R.E.; Campbell, D.J.; Baranowsky, P.W.

    1982-08-19

    The reliability of the emergency ac-power systems typical of several nuclear power plants was estimated, the costs of several possible improvements was estimated. Fault trees were constructed based on a detailed design review of the emergency ac-power systems of 18 nuclear plants. The failure probabilities used in the fault trees were calculated from extensive historical data collected from Licensee Event Reports (LERs) and from operating experience information obtained from nuclear plant licensees. It was found that there are not one or two improvements that can be made at all plants to significantly increase the industry-average emergency ac-power-system reliability, but the improvements are varied and plant-specific. Estimates of the improvements in reliability and the associated cost are estimated using plant-specific designs and failure probabilities.

  7. A Universal Portable Appliance for Stellarator W7-X Power Supply Controlling

    NASA Astrophysics Data System (ADS)

    Xu, Wei-hua; Wolfgang, Foerster; Guenter, Mueller

    2001-06-01

    In the project Wendelstein 7-X (W7-X), the popular fieldbus Profibus has been determined as a uniform connection between the central control system and all the subordinate systems. A universal embedded control system has been developed for W7-X power supply controlling. Siemens 80C167CR microcontroller is used as the central control unit of the system. With a user-defined printed circuit board (PCB) several control buses, i.e., Profibus, CAN, IEEE 488, RS485 and RS 232 have been connected to the microcontroller. The corresponding hardware interfaces for the control buses have been designed. A graphic liquid crystal display(LCD) and a user-defined keyboard are used as user interface. The control software will be developed with a C-like language, i.e., C166 for the controller.

  8. Hydrogen production by reforming of liquid hydrocarbons in a membrane reactor for portable power generation-Model simulations

    NASA Astrophysics Data System (ADS)

    Damle, Ashok S.

    One of the most promising technologies for lightweight, compact, portable power generation is proton exchange membrane (PEM) fuel cells. PEM fuel cells, however, require a source of pure hydrogen. Steam reforming of hydrocarbons in an integrated membrane reactor has potential to provide pure hydrogen in a compact system. In a membrane reactor process, the thermal energy needed for the endothermic hydrocarbon reforming may be provided by combustion of the membrane reject gas. The energy efficiency of the overall hydrogen generation is maximized by controlling the hydrogen product yield such that the heat value of the membrane reject gas is sufficient to provide all of the heat necessary for the integrated process. Optimization of the system temperature, pressure and operating parameters such as net hydrogen recovery is necessary to realize an efficient integrated membrane reformer suitable for compact portable hydrogen generation. This paper presents results of theoretical model simulations of the integrated membrane reformer concept elucidating the effect of operating parameters on the extent of fuel conversion to hydrogen and hydrogen product yield. Model simulations indicate that the net possible hydrogen product yield is strongly influenced by the efficiency of heat recovery from the combustion of membrane reject gas and from the hot exhaust gases. When butane is used as a fuel, a net hydrogen recovery of 68% of that stoichiometrically possible may be achieved with membrane reformer operation at 600 °C (873 K) temperature and 100 psig (0.791 MPa) pressure provided 90% of available combustion and exhaust gas heat is recovered. Operation at a greater pressure or temperature provides a marginal improvement in the performance whereas operation at a significantly lower temperature or pressure will not be able to achieve the optimal hydrogen yield. Slightly higher, up to 76%, net hydrogen recovery is possible when methanol is used as a fuel due to the lower heat

  9. System Study: Emergency Power System 1998–2012

    SciTech Connect

    T. E. Wierman

    2013-10-01

    This report presents an unreliability evaluation of the emergency power system (EPS) at 104 U.S. commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2012 for selected components were obtained from the Equipment Performance and Information Exchange (EPIX). The unreliability results are trended for the most recent 10 year period while yearly estimates for system unreliability are provided for the entire active period. A statistically significant increasing trend was identified for unreliability (8 hour model) as a function of fiscal year. No statistically significant decreasing trend was identified in the EPS results.

  10. Crew emergency return vehicle - Electrical power system design study

    NASA Technical Reports Server (NTRS)

    Darcy, E. C.; Barrera, T. P.

    1989-01-01

    A crew emergency return vehicle (CERV) is proposed to perform the lifeboat function for the manned Space Station Freedom. This escape module will be permanently docked to Freedom and, on demand, will be capable of safely returning the crew to earth. The unique requirements that the CERV imposes on its power source are presented, power source options are examined, and a baseline system is selected. It consists of an active Li-BCX DD-cell modular battery system and was chosen for the maturity of its man-rated design and its low development costs.

  11. Emergency Preparedness in the 10-Mile Emergency Planning Zone Surrounding Nuclear Power Plants.

    PubMed

    Adalja, Amesh A; Sell, Tara Kirk; Ravi, Sanjana J; Minton, Katie; Morhard, Ryan

    2014-12-01

    Each of the nuclear power plants in the US is encircled by an Emergency Planning Zone (EPZ). Within each EPZ, government officials, utility professionals, emergency managers, and public health practitioners collectively conduct extensive planning, exercises, and outreach to better protect their communities in the event of a nuclear accident. Our objective was to conduct a cross-sectional study of off-site public health preparedness within EPZs to better understand the dynamics of nuclear preparedness and uncover lessons for all-hazards preparedness. Using a qualitative, interview-based method, we consulted 120 county emergency managers, state health preparedness officers, state radiation health officials, and industry officials from 17 EPZs in ten different states. Interviewees reflected that EPZ emergency preparedness is generally robust, results from strong public-private partnership between nuclear plants and emergency management agencies, and enhances all-hazard preparedness. However, there exist a few areas which merit further study and improvement. These areas include cross-state coordination, digital public communication, and optimizing the level of public education within EPZs. This first-of-its-kind study provides a cross-sectional snapshot of emergency preparedness in the 10-mile EPZ surrounding nuclear power plants.

  12. Emergency Preparedness in the 10-Mile Emergency Planning Zone Surrounding Nuclear Power Plants

    PubMed Central

    Adalja, Amesh A.; Sell, Tara Kirk; Ravi, Sanjana J.; Minton, Katie; Morhard, Ryan

    2015-01-01

    Objectives Each of the nuclear power plants in the US is encircled by an Emergency Planning Zone (EPZ). Within each EPZ, government officials, utility professionals, emergency managers, and public health practitioners collectively conduct extensive planning, exercises, and outreach to better protect their communities in the event of a nuclear accident. Our objective was to conduct a cross-sectional study of off-site public health preparedness within EPZs to better understand the dynamics of nuclear preparedness and uncover lessons for all-hazards preparedness. Methods Using a qualitative, interview-based method, we consulted 120 county emergency managers, state health preparedness officers, state radiation health officials, and industry officials from 17 EPZs in ten different states. Results Interviewees reflected that EPZ emergency preparedness is generally robust, results from strong public-private partnership between nuclear plants and emergency management agencies, and enhances all-hazard preparedness. However, there exist a few areas which merit further study and improvement. These areas include cross-state coordination, digital public communication, and optimizing the level of public education within EPZs. Conclusions This first-of-its-kind study provides a cross-sectional snapshot of emergency preparedness in the 10-mile EPZ surrounding nuclear power plants. PMID:26692825

  13. 46 CFR 112.20-5 - Failure of power from the normal source or final emergency power source.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... (CONTINUED) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary.... (b) For systems in which a reduction of frequency of the normal source or final emergency power... 46 Shipping 4 2013-10-01 2013-10-01 false Failure of power from the normal source or final...

  14. 46 CFR 112.20-5 - Failure of power from the normal source or final emergency power source.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... (CONTINUED) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary.... (b) For systems in which a reduction of frequency of the normal source or final emergency power... 46 Shipping 4 2011-10-01 2011-10-01 false Failure of power from the normal source or final...

  15. 46 CFR 112.20-5 - Failure of power from the normal source or final emergency power source.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... (CONTINUED) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary.... (b) For systems in which a reduction of frequency of the normal source or final emergency power... 46 Shipping 4 2014-10-01 2014-10-01 false Failure of power from the normal source or final...

  16. 46 CFR 112.20-5 - Failure of power from the normal source or final emergency power source.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... (CONTINUED) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary.... (b) For systems in which a reduction of frequency of the normal source or final emergency power... 46 Shipping 4 2010-10-01 2010-10-01 false Failure of power from the normal source or final...

  17. 46 CFR 112.20-5 - Failure of power from the normal source or final emergency power source.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... (CONTINUED) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS Emergency Systems Having a Temporary.... (b) For systems in which a reduction of frequency of the normal source or final emergency power... 46 Shipping 4 2012-10-01 2012-10-01 false Failure of power from the normal source or final...

  18. A low power low noise analog front end for portable healthcare system

    NASA Astrophysics Data System (ADS)

    Yanchao, Wang; Keren, Ke; Wenhui, Qin; Yajie, Qin; Ting, Yi; Zhiliang, Hong

    2015-10-01

    The presented analog front end (AFE) used to process human bio-signals consists of chopping instrument amplifier (IA), chopping spikes filter and programmable gain and bandwidth amplifier. The capacitor-coupling input of AFE can reject the DC electrode offset. The power consumption of current-feedback based IA is reduced by adopting capacitor divider in the input and feedback network. Besides, IA's input thermal noise is decreased by utilizing complementary CMOS input pairs which can offer higher transconductance. Fabricated in Global Foundry 0.35 μm CMOS technology, the chip consumes 3.96 μA from 3.3 V supply. The measured input noise is 0.85 μVrms (0.5-100 Hz) and the achieved noise efficient factor is 6.48. Project supported by the Science and Technology Commission of Shanghai Municipality (No. 13511501100), the State Key Laboratory Project of China (No. 11MS002), and the State Key Laboratory of ASIC & System, Fudan University.

  19. 46 CFR 35.10-15 - Emergency lighting and power systems-T/ALL.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Emergency lighting and power systems-T/ALL. 35.10-15... Emergency Requirements § 35.10-15 Emergency lighting and power systems—T/ALL. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems are tested and inspected...

  20. 46 CFR 109.211 - Testing of emergency lighting and power systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Testing of emergency lighting and power systems. 109.211... emergency power system is tested at least once each week; (2) Each emergency generator is tested at least... emergency lighting and power systems is tested every six months under actual connected load for a period of...

  1. 46 CFR 109.211 - Testing of emergency lighting and power systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Testing of emergency lighting and power systems. 109.211... emergency power system is tested at least once each week; (2) Each emergency generator is tested at least... emergency lighting and power systems is tested every six months under actual connected load for a period of...

  2. 46 CFR 109.211 - Testing of emergency lighting and power systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Testing of emergency lighting and power systems. 109.211... emergency power system is tested at least once each week; (2) Each emergency generator is tested at least... emergency lighting and power systems is tested every six months under actual connected load for a period of...

  3. 46 CFR 35.10-15 - Emergency lighting and power systems-T/ALL.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Emergency lighting and power systems-T/ALL. 35.10-15... Emergency Requirements § 35.10-15 Emergency lighting and power systems—T/ALL. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems are tested and inspected...

  4. 46 CFR 109.211 - Testing of emergency lighting and power systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Testing of emergency lighting and power systems. 109.211... emergency power system is tested at least once each week; (2) Each emergency generator is tested at least... emergency lighting and power systems is tested every six months under actual connected load for a period of...

  5. 46 CFR 35.10-15 - Emergency lighting and power systems-T/ALL.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Emergency lighting and power systems-T/ALL. 35.10-15... Emergency Requirements § 35.10-15 Emergency lighting and power systems—T/ALL. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems are tested and inspected...

  6. 46 CFR 35.10-15 - Emergency lighting and power systems-T/ALL.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Emergency lighting and power systems-T/ALL. 35.10-15... Emergency Requirements § 35.10-15 Emergency lighting and power systems—T/ALL. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems are tested and inspected...

  7. 46 CFR 35.10-15 - Emergency lighting and power systems-T/ALL.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Emergency lighting and power systems-T/ALL. 35.10-15... Emergency Requirements § 35.10-15 Emergency lighting and power systems—T/ALL. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems are tested and inspected...

  8. 46 CFR 109.211 - Testing of emergency lighting and power systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Testing of emergency lighting and power systems. 109.211... emergency power system is tested at least once each week; (2) Each emergency generator is tested at least... emergency lighting and power systems is tested every six months under actual connected load for a period of...

  9. Wind power project siting workshop: emerging issues and technologies

    SciTech Connect

    anon.

    2004-12-01

    With wind power development extending more broadly across the various regions of the United States, and with new participants entering the wind development business, AWEA developed a workshop on the various ways in which wind power projects affect--and don't affect--elements of the human and natural environment. Over 180 people gathered in Portland, OR on October 13-14, 2004 to participate in a day and a half of presentations by 20 leading industry specialists. Their presentations covered emerging issues of project siting, such as bat interactions and wildlife survey techniques, and methods of generating local support for wind projects. Workshop topics included: Avian and Bat Research Updates; Wildlife Survey Technologies & Techniques; Technical Issues such as Noise, Aesthetics, and Lighting; National Environmental Policy Act (NEPA) Scenarios and Federal Land Policies; Tribal & Community Relations; Federal & State Permitting Process; and Bureau of Land Management Wind Power Developments.

  10. Courseware Portability.

    ERIC Educational Resources Information Center

    Fletcher, J. D.

    Portability enables interactive courseware (ICW) and associated application programs to operate on computer-based systems other than the ones on which they are developed. Courseware portability will increase sharing of ICW across a range of instructional settings within military services and across internationally allied military services. The…

  11. Emergency ac power systems operating experience at US nuclear power plants, 1976 through 1983. [Diesel generator

    SciTech Connect

    Battle, R.E.

    1985-01-01

    Success and failure data of test and emergency starts of emergency ac power sources (diesel generators) at US nuclear power plants were collected and evaluated to estimate diesel generator reliability parameters. A regression analysis of the estimates of the probability of failure to start based on surveillance test data from 1976 through 1983 indicates that the probability of failure to start has been decreasing. However, the reliability of diesel generator performance during losses of off-site power for 1981 through 1983 was less than expected based on the test data estimates. The failures that occurred during losses of off-site power were reviewed to determine why the calculated failure to start was greater than expected, and possible explanations for this high value are presented. The subsystems involved in diesel generator subsystem failures were categorized to determine whether there were any dominant failure modes. The results indicate that further significant improvement in diesel generator reliability will require improvement of many subsystems.

  12. Hydrogen production by reforming of liquid hydrocarbons in a membrane reactor for portable power generation-Experimental studies

    NASA Astrophysics Data System (ADS)

    Damle, Ashok S.

    One of the most promising technologies for lightweight, compact, portable power generation is proton exchange membrane (PEM) fuel cells. PEM fuel cells, however, require a source of pure hydrogen. Steam reforming of hydrocarbons in an integrated membrane reactor has potential to provide pure hydrogen in a compact system. Continuous separation of product hydrogen from the reforming gas mixture is expected to increase the yield of hydrogen significantly as predicted by model simulations. In the laboratory-scale experimental studies reported here steam reforming of liquid hydrocarbon fuels, butane, methanol and Clearlite ® was conducted to produce pure hydrogen in a single step membrane reformer using commercially available Pd-Ag foil membranes and reforming/WGS catalysts. All of the experimental results demonstrated increase in hydrocarbon conversion due to hydrogen separation when compared with the hydrocarbon conversion without any hydrogen separation. Increase in hydrogen recovery was also shown to result in corresponding increase in hydrocarbon conversion in these studies demonstrating the basic concept. The experiments also provided insight into the effect of individual variables such as pressure, temperature, gas space velocity, and steam to carbon ratio. Steam reforming of butane was found to be limited by reaction kinetics for the experimental conditions used: catalysts used, average gas space velocity, and the reactor characteristics of surface area to volume ratio. Steam reforming of methanol in the presence of only WGS catalyst on the other hand indicated that the membrane reactor performance was limited by membrane permeation, especially at lower temperatures and lower feed pressures due to slower reconstitution of CO and H 2 into methane thus maintaining high hydrogen partial pressures in the reacting gas mixture. The limited amount of data collected with steam reforming of Clearlite ® indicated very good match between theoretical predictions and

  13. Portable nanosecond pulsed air plasma jet

    SciTech Connect

    Walsh, J. L.; Kong, M. G.

    2011-08-22

    Low-temperature atmospheric pressure plasmas are of great importance in many emerging biomedical and materials processing applications. The redundancy of a vacuum system opens the gateway for highly portable plasma systems, for which air ideally becomes the plasma-forming gas and remote plasma processing is preferred to ensure electrical safety. Typically, the gas temperature observed in air plasma greatly exceeds that suitable for the processing of thermally liable materials; a large plasma-sample distance offers a potential solution but suffers from a diluted downstream plasma chemistry. This Letter reports a highly portable air plasma jet system which delivers enhanced downstream chemistry without compromising the low temperature nature of the discharge, thus forming the basis of a powerful tool for emerging mobile plasma applications.

  14. Research requirements for emergency power to permit hover-one-engine-inoperative helicopter operation

    NASA Technical Reports Server (NTRS)

    Yost, J. H.

    1976-01-01

    The research and technology demonstration requirements to achieve emergency-power capability for a civil helicopter are documented. The goal for emergency power is the ability to hover with one engine inoperative, transition to minimum-power forward flight, and continue to a safe landing where emergency power may or may not be required. The best method to obtain emergency power is to augment the basic engine power by increasing the engine's speed and turbine-inlet temperature, combined with water-alcohol injection at the engine inlet. Other methods, including turbine boost power and flywheel energy, offer potential for obtaining emergency power for minimum time durations. Costs and schedules are estimated for a research and development program to bring emergency power through a hardware-demonstration test. Interaction of engine emergency-power capability with other helicopter systems is examined.

  15. Portable Electromyograph

    NASA Technical Reports Server (NTRS)

    De Luca, Gianluca; De Luca, Carlo J.; Bergman, Per

    2004-01-01

    A portable electronic apparatus records electromyographic (EMG) signals in as many as 16 channels at a sampling rate of 1,024 Hz in each channel. The apparatus (see figure) includes 16 differential EMG electrodes (each electrode corresponding to one channel) with cables and attachment hardware, reference electrodes, an input/output-and-power-adapter unit, a 16-bit analog-to-digital converter, and a hand-held computer that contains a removable 256-MB flash memory card. When all 16 EMG electrodes are in use, full-bandwidth data can be recorded in each channel for as long as 8 hours. The apparatus is powered by a battery and is small enough that it can be carried in a waist pouch. The computer is equipped with a small screen that can be used to display the incoming signals on each channel. Amplitude and time adjustments of this display can be made easily by use of touch buttons on the screen. The user can also set up a data-acquisition schedule to conform to experimental protocols or to manage battery energy and memory efficiently. Once the EMG data have been recorded, the flash memory card is removed from the EMG apparatus and placed in a flash-memory- card-reading external drive unit connected to a personal computer (PC). The PC can then read the data recorded in the 16 channels. Preferably, before further analysis, the data should be stored in the hard drive of the PC. The data files are opened and viewed on the PC by use of special- purpose software. The software for operation of the apparatus resides in a random-access memory (RAM), with backup power supplied by a small internal lithium cell. A backup copy of this software resides on the flash memory card. In the event of loss of both main and backup battery power and consequent loss of this software, the backup copy can be used to restore the RAM copy after power has been restored. Accessories for this device are also available. These include goniometers, accelerometers, foot switches, and force gauges.

  16. Portable Breathing Assembly

    NASA Image and Video Library

    2017-06-12

    In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, Jacobs Test and Operations Support Contract, or TOSC, technicians fill portable breathing apparatuses, or PBAS. The PBAs are to be use on board the International Space Staton to provide astronauts with breathable air in the event of a fire or other emergency situation.

  17. Portable Breathing Assembly

    NASA Image and Video Library

    2017-06-12

    In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, Jacobs Test and Operations Support Contract, or TOSC, technician Rod Ostgrard helps fill portable breathing apparatuses, or PBAS. The PBAs are to be use on board the International Space Staton to provide astronauts with breathable air in the event of a fire or other emergency situation.

  18. Portable Breathing Assembly

    NASA Image and Video Library

    2017-06-12

    In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, Jacobs Test and Operations Support Contract, or TOSC, technician John Thompson helps fill portable breathing apparatuses, or PBAS. The PBAs are to be use on board the International Space Staton to provide astronauts with breathable air in the event of a fire or other emergency situation.

  19. Portable Planetarium.

    ERIC Educational Resources Information Center

    Stockdale, Dennis L.

    1997-01-01

    Describes a method that students can use to build portable planetariums. After building the models, students are familiar with the names of constellations and major stars and are able to share their projects with other students. (DDR)

  20. 46 CFR 78.17-45 - Emergency lighting and power systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 3 2014-10-01 2014-10-01 false Emergency lighting and power systems. 78.17-45 Section... OPERATIONS Tests, Drills, and Inspections § 78.17-45 Emergency lighting and power systems. (a) It shall be the duty of the master to see that the emergency lighting and power systems are operated and inspected...

  1. 46 CFR 196.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Emergency lighting and power systems. 196.15-30 Section... VESSELS OPERATIONS Test, Drills, and Inspections § 196.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  2. 46 CFR 97.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Emergency lighting and power systems. 97.15-30 Section... VESSELS OPERATIONS Tests, Drills, and Inspections § 97.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  3. 46 CFR 196.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Emergency lighting and power systems. 196.15-30 Section... VESSELS OPERATIONS Test, Drills, and Inspections § 196.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  4. 46 CFR 196.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Emergency lighting and power systems. 196.15-30 Section... VESSELS OPERATIONS Test, Drills, and Inspections § 196.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  5. 46 CFR 78.17-45 - Emergency lighting and power systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 3 2010-10-01 2010-10-01 false Emergency lighting and power systems. 78.17-45 Section... OPERATIONS Tests, Drills, and Inspections § 78.17-45 Emergency lighting and power systems. (a) It shall be the duty of the master to see that the emergency lighting and power systems are operated and inspected...

  6. 46 CFR 196.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Emergency lighting and power systems. 196.15-30 Section... VESSELS OPERATIONS Test, Drills, and Inspections § 196.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  7. 46 CFR 97.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Emergency lighting and power systems. 97.15-30 Section... VESSELS OPERATIONS Tests, Drills, and Inspections § 97.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  8. 46 CFR 78.17-45 - Emergency lighting and power systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 3 2011-10-01 2011-10-01 false Emergency lighting and power systems. 78.17-45 Section... OPERATIONS Tests, Drills, and Inspections § 78.17-45 Emergency lighting and power systems. (a) It shall be the duty of the master to see that the emergency lighting and power systems are operated and inspected...

  9. 46 CFR 196.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Emergency lighting and power systems. 196.15-30 Section... VESSELS OPERATIONS Test, Drills, and Inspections § 196.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  10. 46 CFR 78.17-45 - Emergency lighting and power systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 3 2013-10-01 2013-10-01 false Emergency lighting and power systems. 78.17-45 Section... OPERATIONS Tests, Drills, and Inspections § 78.17-45 Emergency lighting and power systems. (a) It shall be the duty of the master to see that the emergency lighting and power systems are operated and inspected...

  11. 46 CFR 78.17-45 - Emergency lighting and power systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 3 2012-10-01 2012-10-01 false Emergency lighting and power systems. 78.17-45 Section... OPERATIONS Tests, Drills, and Inspections § 78.17-45 Emergency lighting and power systems. (a) It shall be the duty of the master to see that the emergency lighting and power systems are operated and inspected...

  12. 46 CFR 97.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Emergency lighting and power systems. 97.15-30 Section... VESSELS OPERATIONS Tests, Drills, and Inspections § 97.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  13. 46 CFR 97.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Emergency lighting and power systems. 97.15-30 Section... VESSELS OPERATIONS Tests, Drills, and Inspections § 97.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  14. 46 CFR 97.15-30 - Emergency lighting and power systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Emergency lighting and power systems. 97.15-30 Section... VESSELS OPERATIONS Tests, Drills, and Inspections § 97.15-30 Emergency lighting and power systems. (a) Where fitted, it shall be the duty of the master to see that the emergency lighting and power systems...

  15. 46 CFR 108.139 - Boundary bulkheads and decks of a space containing emergency power.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... bulkhead and deck of a space containing an emergency electric power source or components of an emergency electric power source must be an A class bulkhead and A class deck respectively. When separate but... emergency power. 108.139 Section 108.139 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)...

  16. Portable Chamfering Tool

    NASA Technical Reports Server (NTRS)

    Berson, Leo A.

    1987-01-01

    Portable machine tool precisely cuts chamfer on valve seat. With tool, delicate machining operation done without removing part to machine shop. Taken to part and used wherever pressurized air and electric power available. Plug and bushing nest in bore chamfered. They guide steady cutter rod as it cuts 15 degrees chamfer on top edge of bore.

  17. Portable headset microphone checker

    NASA Technical Reports Server (NTRS)

    Davenport, J.; Foster, J. A.; Langley, W. R.

    1975-01-01

    Simple and reliable test system gives go/no-go indication of output level of headset microphones. Portable system has its own internal battery power supply and can be used in field or in laboratory with wide variety of headset types.

  18. Portable Chamfering Tool

    NASA Technical Reports Server (NTRS)

    Berson, Leo A.

    1987-01-01

    Portable machine tool precisely cuts chamfer on valve seat. With tool, delicate machining operation done without removing part to machine shop. Taken to part and used wherever pressurized air and electric power available. Plug and bushing nest in bore chamfered. They guide steady cutter rod as it cuts 15 degrees chamfer on top edge of bore.

  19. Emerging Two-Phase Cooling Technologies for Power Electronic Inverters

    SciTech Connect

    Hsu, J.S.

    2005-08-17

    In order to meet the Department of Energy's (DOE's) FreedomCAR and Vehicle Technologies (FVCT) goals for volume, weight, efficiency, reliability, and cost, the cooling of the power electronic devices, traction motors, and generators is critical. Currently the power electronic devices, traction motors, and generators in a hybrid electric vehicle (HEV) are primarily cooled by water-ethylene glycol (WEG) mixture. The cooling fluid operates as a single-phase coolant as the liquid phase of the WEG does not change to its vapor phase during the cooling process. In these single-phase systems, two cooling loops of WEG produce a low temperature (around 70 C) cooling loop for the power electronics and motor/generator, and higher temperature loop (around 105 C) for the internal combustion engine. There is another coolant option currently available in automobiles. It is possible to use the transmission oil as a coolant. The oil temperature exists at approximately 85 C which can be utilized to cool the power electronic and electrical devices. Because heat flux is proportional to the temperature difference between the device's hot surface and the coolant, a device that can tolerate higher temperatures enables the device to be smaller while dissipating the same amount of heat. Presently, new silicon carbide (SiC) devices and high temperature direct current (dc)-link capacitors, such as Teflon capacitors, are available but at significantly higher costs. Higher junction temperature (175 C) silicon (Si) dies are gradually emerging in the market, which will eventually help to lower hardware costs for cooling. The development of high-temperature devices is not the only way to reduce device size. Two-phase cooling that utilizes the vaporization of the liquid to dissipate heat is expected to be a very effective cooling method. Among two-phase cooling methods, different technologies such as spray, jet impingement, pool boiling and submersion, etc. are being developed. The Oak Ridge

  20. Portable reflectance spectrometer

    NASA Technical Reports Server (NTRS)

    Goetz, A. F. H.; Graham, R. A.; Ozawa, T. (Inventor)

    1977-01-01

    A portable reflectance spectrometer is disclosed. The spectrometer essentially includes an optical unit and an electronic recording unit. The optical unit includes a pair of thermoelectrically-cooled detectors, for detecting total radiance and selected radiance projected through a circular variable filter wheel, and is capable of operating to provide spectral data in the range 0.4 to 2.5 micrometers without requiring coventional substitution of filter elements. The electronic recording unit includes power supplies, amplifiers, and digital recording electronics designed to permit recordation of data on tape casettes. Both the optical unit and electronic recording unit are packaged to be manually portable.

  1. Leadership in Mammalian Societies: Emergence, Distribution, Power, and Payoff.

    PubMed

    Smith, Jennifer E; Gavrilets, Sergey; Mulder, Monique Borgerhoff; Hooper, Paul L; El Mouden, Claire; Nettle, Daniel; Hauert, Christoph; Hill, Kim; Perry, Susan; Pusey, Anne E; van Vugt, Mark; Smith, Eric Alden

    2016-01-01

    Leadership is an active area of research in both the biological and social sciences. This review provides a transdisciplinary synthesis of biological and social-science views of leadership from an evolutionary perspective, and examines patterns of leadership in a set of small-scale human and non-human mammalian societies. We review empirical and theoretical work on leadership in four domains: movement, food acquisition, within-group conflict mediation, and between-group interactions. We categorize patterns of variation in leadership in five dimensions: distribution (across individuals), emergence (achieved versus inherited), power, relative payoff to leadership, and generality (across domains). We find that human leadership exhibits commonalities with and differences from the broader mammalian pattern, raising interesting theoretical and empirical issues.

  2. Reciprocity and the Emergence of Power Laws in Social Networks

    NASA Astrophysics Data System (ADS)

    Schnegg, Michael

    Research in network science has shown that many naturally occurring and technologically constructed networks are scale free, that means a power law degree distribution emerges from a growth model in which each new node attaches to the existing network with a probability proportional to its number of links (= degree). Little is known about whether the same principles of local attachment and global properties apply to societies as well. Empirical evidence from six ethnographic case studies shows that complex social networks have significantly lower scaling exponents γ ~ 1 than have been assumed in the past. Apparently humans do not only look for the most prominent players to play with. Moreover cooperation in humans is characterized through reciprocity, the tendency to give to those from whom one has received in the past. Both variables — reciprocity and the scaling exponent — are negatively correlated (r = -0.767, sig = 0.075). If we include this effect in simulations of growing networks, degree distributions emerge that are much closer to those empirically observed. While the proportion of nodes with small degrees decreases drastically as we introduce reciprocity, the scaling exponent is more robust and changes only when a relatively large proportion of attachment decisions follow this rule. If social networks are less scale free than previously assumed this has far reaching implications for policy makers, public health programs and marketing alike.

  3. Deflectometry using portable devices

    NASA Astrophysics Data System (ADS)

    Butel, Guillaume P.; Smith, Greg A.; Burge, James H.

    2015-02-01

    Deflectometry is a powerful metrology technique that uses off-the-shelf equipment to achieve nanometer-level accuracy surface measurements. However, there is no portable device to quickly measure eyeglasses, lenses, or mirrors. We present an entirely portable new deflectometry technique that runs on any Android™ smartphone with a front-facing camera. Our technique overcomes some specific issues of portable devices like screen nonlinearity and automatic gain control. We demonstrate our application by measuring an amateur telescope mirror and simulating a measurement of the faulty Hubble Space Telescope primary mirror. Our technique can, in less than 1 min, measure surface errors with accuracy up to 50 nm RMS, simply using a smartphone.

  4. Emerging Environmental Justice Issues in Nuclear Power and Radioactive Contamination.

    PubMed

    Kyne, Dean; Bolin, Bob

    2016-07-12

    Nuclear hazards, linked to both U.S. weapons programs and civilian nuclear power, pose substantial environment justice issues. Nuclear power plant (NPP) reactors produce low-level ionizing radiation, high level nuclear waste, and are subject to catastrophic contamination events. Justice concerns include plant locations and the large potentially exposed populations, as well as issues in siting, nuclear safety, and barriers to public participation. Other justice issues relate to extensive contamination in the U.S. nuclear weapons complex, and the mining and processing industries that have supported it. To approach the topic, first we discuss distributional justice issues of NPP sites in the U.S. and related procedural injustices in siting, operation, and emergency preparedness. Then we discuss justice concerns involving the U.S. nuclear weapons complex and the ways that uranium mining, processing, and weapons development have affected those living downwind, including a substantial American Indian population. Next we examine the problem of high-level nuclear waste and the risk implications of the lack of secure long-term storage. The handling and deposition of toxic nuclear wastes pose new transgenerational justice issues of unprecedented duration, in comparison to any other industry. Finally, we discuss the persistent risks of nuclear technologies and renewable energy alternatives.

  5. Emerging Environmental Justice Issues in Nuclear Power and Radioactive Contamination

    PubMed Central

    Kyne, Dean; Bolin, Bob

    2016-01-01

    Nuclear hazards, linked to both U.S. weapons programs and civilian nuclear power, pose substantial environment justice issues. Nuclear power plant (NPP) reactors produce low-level ionizing radiation, high level nuclear waste, and are subject to catastrophic contamination events. Justice concerns include plant locations and the large potentially exposed populations, as well as issues in siting, nuclear safety, and barriers to public participation. Other justice issues relate to extensive contamination in the U.S. nuclear weapons complex, and the mining and processing industries that have supported it. To approach the topic, first we discuss distributional justice issues of NPP sites in the U.S. and related procedural injustices in siting, operation, and emergency preparedness. Then we discuss justice concerns involving the U.S. nuclear weapons complex and the ways that uranium mining, processing, and weapons development have affected those living downwind, including a substantial American Indian population. Next we examine the problem of high-level nuclear waste and the risk implications of the lack of secure long-term storage. The handling and deposition of toxic nuclear wastes pose new transgenerational justice issues of unprecedented duration, in comparison to any other industry. Finally, we discuss the persistent risks of nuclear technologies and renewable energy alternatives. PMID:27420080

  6. 46 CFR 196.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Portable magazine chests. 196.37-47 Section 196.37-47... Markings for Fire and Emergency Equipment, etc. § 196.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: PORTABLE MAGAZINE CHEST — FLAMMABLE —...

  7. 46 CFR 78.47-70 - Portable magazine chests.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 3 2013-10-01 2013-10-01 false Portable magazine chests. 78.47-70 Section 78.47-70... Fire and Emergency Equipment, Etc. § 78.47-70 Portable magazine chests. (a) Portable magazine chest shall be marked in letters of at least 3 inches high “PORTABLE MAGAZINE CHEST—FLAMMABLE—KEEP LIGHTS...

  8. 46 CFR 196.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Portable magazine chests. 196.37-47 Section 196.37-47... Markings for Fire and Emergency Equipment, etc. § 196.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: PORTABLE MAGAZINE CHEST — FLAMMABLE —...

  9. 46 CFR 97.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Portable magazine chests. 97.37-47 Section 97.37-47... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: “PORTABLE MAGAZINE...

  10. 46 CFR 97.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Portable magazine chests. 97.37-47 Section 97.37-47... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: “PORTABLE MAGAZINE...

  11. 46 CFR 78.47-70 - Portable magazine chests.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 3 2011-10-01 2011-10-01 false Portable magazine chests. 78.47-70 Section 78.47-70... Fire and Emergency Equipment, Etc. § 78.47-70 Portable magazine chests. (a) Portable magazine chest shall be marked in letters of at least 3 inches high “PORTABLE MAGAZINE CHEST—FLAMMABLE—KEEP LIGHTS...

  12. 46 CFR 196.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Portable magazine chests. 196.37-47 Section 196.37-47... Markings for Fire and Emergency Equipment, etc. § 196.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: PORTABLE MAGAZINE CHEST — FLAMMABLE —...

  13. 46 CFR 196.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Portable magazine chests. 196.37-47 Section 196.37-47... Markings for Fire and Emergency Equipment, etc. § 196.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: PORTABLE MAGAZINE CHEST — FLAMMABLE —...

  14. 46 CFR 78.47-70 - Portable magazine chests.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 3 2012-10-01 2012-10-01 false Portable magazine chests. 78.47-70 Section 78.47-70... Fire and Emergency Equipment, Etc. § 78.47-70 Portable magazine chests. (a) Portable magazine chest shall be marked in letters of at least 3 inches high “PORTABLE MAGAZINE CHEST—FLAMMABLE—KEEP LIGHTS...

  15. 46 CFR 97.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Portable magazine chests. 97.37-47 Section 97.37-47... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: “PORTABLE MAGAZINE...

  16. 46 CFR 78.47-70 - Portable magazine chests.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 3 2014-10-01 2014-10-01 false Portable magazine chests. 78.47-70 Section 78.47-70... Fire and Emergency Equipment, Etc. § 78.47-70 Portable magazine chests. (a) Portable magazine chest shall be marked in letters of at least 3 inches high “PORTABLE MAGAZINE CHEST—FLAMMABLE—KEEP LIGHTS...

  17. 46 CFR 97.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Portable magazine chests. 97.37-47 Section 97.37-47... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: “PORTABLE MAGAZINE...

  18. 46 CFR 196.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Portable magazine chests. 196.37-47 Section 196.37-47... Markings for Fire and Emergency Equipment, etc. § 196.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: PORTABLE MAGAZINE CHEST — FLAMMABLE —...

  19. 46 CFR 97.37-47 - Portable magazine chests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Portable magazine chests. 97.37-47 Section 97.37-47... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-47 Portable magazine chests. (a) Portable magazine chests shall be marked in letters at least 3 inches high: “PORTABLE MAGAZINE CHEST—FLAMMABLE—KEEP...

  20. 46 CFR 78.47-70 - Portable magazine chests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 3 2010-10-01 2010-10-01 false Portable magazine chests. 78.47-70 Section 78.47-70... Fire and Emergency Equipment, Etc. § 78.47-70 Portable magazine chests. (a) Portable magazine chest shall be marked in letters of at least 3 inches high “PORTABLE MAGAZINE CHEST—FLAMMABLE—KEEP LIGHTS AND...

  1. Portable direct methanol fuel cell systems

    NASA Technical Reports Server (NTRS)

    Narayanan, S. R.; Valdez, T. I.

    2002-01-01

    This article includes discussion of the specific power and power density requirements for various portable system applications, the status of stack technology, progress in the implementation of balance-of-plant designs, and a summary of the characteristics of various DMFC portable power source demonstrations.

  2. 46 CFR 190.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... electric power. 190.05-15 Section 190.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Segregation of spaces containing the emergency source of electric power. (a) When a compartment containing the emergency source of electric power, or vital components thereof, adjoins a space containing either the...

  3. 46 CFR 92.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... electric power. 92.05-15 Section 92.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Segregation of spaces containing the emergency source of electric power. (a) The provisions of this section... the emergency source of electric power, or vital components thereof, adjoins a space containing...

  4. 46 CFR 92.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... electric power. 92.05-15 Section 92.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Segregation of spaces containing the emergency source of electric power. (a) The provisions of this section... the emergency source of electric power, or vital components thereof, adjoins a space containing...

  5. 46 CFR 190.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... electric power. 190.05-15 Section 190.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Segregation of spaces containing the emergency source of electric power. (a) When a compartment containing the emergency source of electric power, or vital components thereof, adjoins a space containing either the...

  6. 46 CFR 92.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... electric power. 92.05-15 Section 92.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Segregation of spaces containing the emergency source of electric power. (a) The provisions of this section... the emergency source of electric power, or vital components thereof, adjoins a space containing...

  7. 46 CFR 92.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... electric power. 92.05-15 Section 92.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Segregation of spaces containing the emergency source of electric power. (a) The provisions of this section... the emergency source of electric power, or vital components thereof, adjoins a space containing...

  8. A portable battery-powered flow injection monitor for the in situ analysis of nitrate in natural waters

    PubMed Central

    Blundell, N. J.; Hopkins, A.; Worsfold, P. J.; Casey, H.

    1993-01-01

    The design and performance of a portable, automated flow injection (FI)-based photometric monitor are described. The system is controlled by an in-house microcomputer system that enables the monitor (including a solid state detector) to operate from a 12 V battery supply. The monitor uses the cadmium reduction/diazotization method to analyse for nitrate with a linear range of 0 to 12 mg l-1 and a limit of detection of 0.05 mg l-1 (NO3-N). The hardware and software design, monitor performance and results obtained during unattended operation are presented. PMID:18924971

  9. U.S. SOCOM Grand Challenge #3: NREL Technical Roadmap for a Man-Portable Power Supply System for TALOS

    SciTech Connect

    Ainsworth, Nathan; Heaps, Colton; Symko-Davies, Martha; Cale, James

    2016-06-01

    The purpose of this report is to propose a technical roadmap for power supply technology to power the Tactical Assault Light Operator Suit (TALOS), an armored, powered exoskeleton currently in development for U.S. Special Operations Command operators. TALOS' power supply system must meet size targets similar to the size of a large backpack while providing significant electrical power for an entire mission cycle without resupply. This report proposes a staged development path based on three fundamental technical approaches.

  10. 33 CFR 149.660 - What are the requirements for emergency power?

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false What are the requirements for... Equipment Emergency Power § 149.660 What are the requirements for emergency power? (a) Each pumping platform... equipment; (4) Radar equipment; (5) Alarm systems; (6) Electrically operated fire pumps; and (7)...

  11. 33 CFR 149.660 - What are the requirements for emergency power?

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false What are the requirements for... Equipment Emergency Power § 149.660 What are the requirements for emergency power? (a) Each pumping platform...; (4) Radar equipment; (5) Alarm systems; (6) Electrically operated fire pumps; and (7)...

  12. 76 FR 74630 - Making Changes to Emergency Plans for Nuclear Power Reactors

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-01

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION 10 CFR Parts 50 and 52 RIN 3150-AI10 Making Changes to Emergency Plans for Nuclear Power Reactors... Emergency Plans for Nuclear Power Reactors.'' This guide describes a method that the NRC staff considers...

  13. A hand-powered, portable, low-cost centrifuge for diagnosing anemia in low-resource settings.

    PubMed

    Brown, Jocelyn; Theis, Lauren; Kerr, Lila; Zakhidova, Nazima; O'Connor, Kelly; Uthman, Margaret; Oden, Z Maria; Richards-Kortum, Rebecca

    2011-08-01

    This report describes the development of a hand-powered centrifuge to determine hematocrit values in low-resource settings. A hand-powered centrifuge was constructed by using a salad spinner. Hematocrit values were measured by using the hand-powered device, and results were compared with those of a benchtop centrifuge. The packed cell volume (PCV) measured with the hand-powered device correlated linearly with results obtained with a benchtop centrifuge (r = 0.986, P < 0.001). The PCVs measured with the hand-powered centrifuge were consistently 1.14 times higher than those measured with the benchtop system. The 14% increase in PCV measured with the hand-powered centrifuge is caused by increased plasma trapped in the cell column. The reader card was adjusted to compensate for trapped plasma. A hand-powered centrifuge and calibrated reader card can be constructed for U.S. $35 and can accurately determine hematocrit values. It is suitable for use in low-resource settings because it is mechanically-powered, inexpensive, and accurate.

  14. A Hand-Powered, Portable, Low-Cost Centrifuge for Diagnosing Anemia in Low-Resource Settings

    PubMed Central

    Brown, Jocelyn; Theis, Lauren; Kerr, Lila; Zakhidova, Nazima; O'Connor, Kelly; Uthman, Margaret; Oden, Z. Maria; Richards-Kortum, Rebecca

    2011-01-01

    This report describes the development of a hand-powered centrifuge to determine hematocrit values in low-resource settings. A hand-powered centrifuge was constructed by using a salad spinner. Hematocrit values were measured by using the hand-powered device, and results were compared with those of a benchtop centrifuge. The packed cell volume (PCV) measured with the hand-powered device correlated linearly with results obtained with a benchtop centrifuge (r = 0.986, P < 0.001). The PCVs measured with the hand-powered centrifuge were consistently 1.14 times higher than those measured with the benchtop system. The 14% increase in PCV measured with the hand-powered centrifuge is caused by increased plasma trapped in the cell column. The reader card was adjusted to compensate for trapped plasma. A hand-powered centrifuge and calibrated reader card can be constructed for U.S. $35 and can accurately determine hematocrit values. It is suitable for use in low-resource settings because it is mechanically-powered, inexpensive, and accurate. PMID:21813855

  15. Social Studies: Emergence of America as a World Power.

    ERIC Educational Resources Information Center

    McCormick, Jackie

    The quinmester American studies elective course for grades seven through nine focuses on the development of the United States as a world power from 1898 when conditions and influential groups of expansionists contributed to the United States, changing from an isolationist nation to the present world power. Emphasis is on the concept of national…

  16. High-power, micro-integrated diode laser modules at 767 and 780 nm for portable quantum gas experiments.

    PubMed

    Schiemangk, Max; Lampmann, Kai; Dinkelaker, Aline; Kohfeldt, Anja; Krutzik, Markus; Kürbis, Christian; Sahm, Alexander; Spießberger, Stefan; Wicht, Andreas; Erbert, Götz; Tränkle, Günther; Peters, Achim

    2015-06-10

    We present micro-integrated diode laser modules operating at wavelengths of 767 and 780 nm for cold quantum gas experiments on potassium and rubidium. The master-oscillator-power-amplifier concept provides both narrow linewidth emission and high optical output power. With a linewidth (10 μs) below 1 MHz and an output power of up to 3 W, these modules are specifically suited for quantum optics experiments and feature the robustness required for operation at a drop tower or on-board a sounding rocket. This technology development hence paves the way toward precision quantum optics experiments in space.

  17. HEMP emergency planning and operating procedures for electric power systems

    SciTech Connect

    Reddoch, T.W.; Markel, L.C. )

    1991-01-01

    Investigations of the impact of high-altitude electromagnetic pulse (HEMP) on electric power systems and electrical equipment have revealed that HEMP creates both misoperation and failures. These events result from both the early time E[sub 1] (steep-front pulse) component and the late time E[sub 3] (geomagnetic perturbations) component of HEMP. In this report a HEMP event is viewed in terms of its marginal impact over classical power system disturbances by considering the unique properties and consequences of HEMP. This report focuses on system-wide electrical component failures and their potential consequences from HEMP. In particular, the effectiveness of planning and operating procedures for electric systems is evaluated while under the influence of HEMP. This assessment relies on published data and characterizes utilities using the North American Electric Reliability Council's regions and guidelines to model electric power system planning and operations. Key issues addressed by the report include how electric power systems are affected by HEMP and what actions electric utilities can initiate to reduce the consequences of HEMP. The report also reviews the salient features of earlier HEMP studies and projects, examines technology trends in the electric power industry which are affected by HEMP, characterizes the vulnerability of power systems to HEMP, and explores the capability of electric systems to recover from a HEMP event.

  18. Soft Power and Cultural Diplomacy: Emerging Education Hubs in Asia

    ERIC Educational Resources Information Center

    Lee, Jack T.

    2015-01-01

    Several education hubs have emerged in Asia and the Middle East in recent years with a specific focus on cross-border higher education. Through considerable efforts in policy planning and generous funding, these hubs aim to transform a country or city into an eminent destination for education, research, and training. The inherent design of these…

  19. 77 FR 39745 - Fuel Oil Systems for Emergency Power Supplies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-05

    ... Commission's requirements regarding fuel oil systems for safety-related emergency diesel generators and oil-fueled gas turbine generators, including assurance of adequate fuel oil quality. DATES: Submit comments... Diesel Generators'' dated April 1979. This guide describes a method that the NRC staff considers...

  20. Soft Power and Cultural Diplomacy: Emerging Education Hubs in Asia

    ERIC Educational Resources Information Center

    Lee, Jack T.

    2015-01-01

    Several education hubs have emerged in Asia and the Middle East in recent years with a specific focus on cross-border higher education. Through considerable efforts in policy planning and generous funding, these hubs aim to transform a country or city into an eminent destination for education, research, and training. The inherent design of these…

  1. Geographic information system (GIS) simulation of emergency power production from disaster debris in a combined heat and power (CHP) system

    NASA Astrophysics Data System (ADS)

    Ryals, Christopher Shannon

    The objective of this study is to determine a predicted energy capacity of disaster debris for the production of emergency power using a combined heat and power (CHP) unit. A prediction simulation using geographic information systems (GIS) will use data from past storms to calculate an estimated amount of debris along with an estimated energy potential of said debris. Rather than the expense and burden of transporting woody debris such as downed trees and wood framing materials offsite, they can be processed (sorting and chipping) to provide an onsite energy source to provide power to emergency management facilities such as shelters in schools and hospitals. A CHP unit can simultaneously produce heat, cooling effects and electrical power using various biomass sources. This study surveys the quantity and composition of debris produced for a given classification of disaster and location. A comparison of power efficiency estimates for various disasters is conducted.

  2. Smart portable rehabilitation devices.

    PubMed

    Mavroidis, Constantinos; Nikitczuk, Jason; Weinberg, Brian; Danaher, Gil; Jensen, Katherine; Pelletier, Philip; Prugnarola, Jennifer; Stuart, Ryan; Arango, Roberto; Leahey, Matt; Pavone, Robert; Provo, Andrew; Yasevac, Dan

    2005-07-12

    The majority of current portable orthotic devices and rehabilitative braces provide stability, apply precise pressure, or help maintain alignment of the joints with out the capability for real time monitoring of the patient's motions and forces and without the ability for real time adjustments of the applied forces and motions. Improved technology has allowed for advancements where these devices can be designed to apply a form of tension to resist motion of the joint. These devices induce quicker recovery and are more effective at restoring proper biomechanics and improving muscle function. However, their shortcoming is in their inability to be adjusted in real-time, which is the most ideal form of a device for rehabilitation. This introduces a second class of devices beyond passive orthotics. It is comprised of "active" or powered devices, and although more complicated in design, they are definitely the most versatile. An active or powered orthotic, usually employs some type of actuator(s). In this paper we present several new advancements in the area of smart rehabilitation devices that have been developed by the Northeastern University Robotics and Mechatronics Laboratory. They are all compact, wearable and portable devices and boast re-programmable, real time computer controlled functions as the central theme behind their operation. The sensory information and computer control of the three described devices make for highly efficient and versatile systems that represent a whole new breed in wearable rehabilitation devices. Their applications range from active-assistive rehabilitation to resistance exercise and even have applications in gait training. The three devices described are: a transportable continuous passive motion elbow device, a wearable electro-rheological fluid based knee resistance device, and a wearable electrical stimulation and biofeedback knee device. Laboratory tests of the devices demonstrated that they were able to meet their design

  3. Smart portable rehabilitation devices

    PubMed Central

    Mavroidis, Constantinos; Nikitczuk, Jason; Weinberg, Brian; Danaher, Gil; Jensen, Katherine; Pelletier, Philip; Prugnarola, Jennifer; Stuart, Ryan; Arango, Roberto; Leahey, Matt; Pavone, Robert; Provo, Andrew; Yasevac, Dan

    2005-01-01

    Background The majority of current portable orthotic devices and rehabilitative braces provide stability, apply precise pressure, or help maintain alignment of the joints with out the capability for real time monitoring of the patient's motions and forces and without the ability for real time adjustments of the applied forces and motions. Improved technology has allowed for advancements where these devices can be designed to apply a form of tension to resist motion of the joint. These devices induce quicker recovery and are more effective at restoring proper biomechanics and improving muscle function. However, their shortcoming is in their inability to be adjusted in real-time, which is the most ideal form of a device for rehabilitation. This introduces a second class of devices beyond passive orthotics. It is comprised of "active" or powered devices, and although more complicated in design, they are definitely the most versatile. An active or powered orthotic, usually employs some type of actuator(s). Methods In this paper we present several new advancements in the area of smart rehabilitation devices that have been developed by the Northeastern University Robotics and Mechatronics Laboratory. They are all compact, wearable and portable devices and boast re-programmable, real time computer controlled functions as the central theme behind their operation. The sensory information and computer control of the three described devices make for highly efficient and versatile systems that represent a whole new breed in wearable rehabilitation devices. Their applications range from active-assistive rehabilitation to resistance exercise and even have applications in gait training. The three devices described are: a transportable continuous passive motion elbow device, a wearable electro-rheological fluid based knee resistance device, and a wearable electrical stimulation and biofeedback knee device. Results Laboratory tests of the devices demonstrated that they were able to

  4. Method and system for conserving power in a telecommunications network during emergency situations

    DOEpatents

    Conrad, Stephen H [Algodones, NM; O'Reilly, Gerard P [Manalapan, NJ

    2011-10-11

    Disclosed is a method and apparatus for conserving power in a telecommunications network during emergency situations. A permissible number list of emergency and/or priority numbers is stored in the telecommunications network. In the event of an emergency or power failure, input digits of a call to the telecommunications network are compared to the permissible number list. The call is processed in the telecommunications network and routed to its destination if the input digits match an entry in the permissible number list. The call is dropped without any further processing if the input digits do not match an entry in the permissible number list. Thus, power can be conserved in emergency situations by only allowing emergency and/or priority calls.

  5. 46 CFR 97.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Hand portable fire extinguishers. 97.37-23 Section 97.37... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where stowed shall...

  6. 46 CFR 78.47-30 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 3 2014-10-01 2014-10-01 false Hand portable fire extinguishers. 78.47-30 Section 78.47... Markings for Fire and Emergency Equipment, Etc. § 78.47-30 Hand portable fire extinguishers. (a) Each hand... a corresponding number at least 1/2 inch high. Where only one type and size of hand portable fire...

  7. 46 CFR 97.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Hand portable fire extinguishers. 97.37-23 Section 97.37... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where stowed shall...

  8. 46 CFR 97.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Hand portable fire extinguishers. 97.37-23 Section 97.37... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where stowed shall...

  9. 46 CFR 78.47-30 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 3 2011-10-01 2011-10-01 false Hand portable fire extinguishers. 78.47-30 Section 78.47... Markings for Fire and Emergency Equipment, Etc. § 78.47-30 Hand portable fire extinguishers. (a) Each hand... a corresponding number at least 1/2 inch high. Where only one type and size of hand portable fire...

  10. 46 CFR 78.47-30 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 3 2013-10-01 2013-10-01 false Hand portable fire extinguishers. 78.47-30 Section 78.47... Markings for Fire and Emergency Equipment, Etc. § 78.47-30 Hand portable fire extinguishers. (a) Each hand... a corresponding number at least 1/2 inch high. Where only one type and size of hand portable fire...

  11. 46 CFR 97.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Hand portable fire extinguishers. 97.37-23 Section 97.37... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where stowed shall...

  12. 46 CFR 196.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Hand portable fire extinguishers. 196.37-23 Section 196... VESSELS OPERATIONS Markings for Fire and Emergency Equipment, etc. § 196.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where...

  13. 46 CFR 97.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Hand portable fire extinguishers. 97.37-23 Section 97.37... OPERATIONS Markings for Fire and Emergency Equipment, Etc. § 97.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where stowed shall...

  14. 46 CFR 78.47-30 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 3 2010-10-01 2010-10-01 false Hand portable fire extinguishers. 78.47-30 Section 78.47... Markings for Fire and Emergency Equipment, Etc. § 78.47-30 Hand portable fire extinguishers. (a) Each hand... a corresponding number at least 1/2 inch high. Where only one type and size of hand portable fire...

  15. 46 CFR 196.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Hand portable fire extinguishers. 196.37-23 Section 196... VESSELS OPERATIONS Markings for Fire and Emergency Equipment, etc. § 196.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where...

  16. 46 CFR 196.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Hand portable fire extinguishers. 196.37-23 Section 196... VESSELS OPERATIONS Markings for Fire and Emergency Equipment, etc. § 196.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where...

  17. 46 CFR 196.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Hand portable fire extinguishers. 196.37-23 Section 196... VESSELS OPERATIONS Markings for Fire and Emergency Equipment, etc. § 196.37-23 Hand portable fire extinguishers. (a) Each hand portable fire extinguisher shall be marked with a number and the location where...

  18. 46 CFR 78.47-30 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 3 2012-10-01 2012-10-01 false Hand portable fire extinguishers. 78.47-30 Section 78.47... Markings for Fire and Emergency Equipment, Etc. § 78.47-30 Hand portable fire extinguishers. (a) Each hand... a corresponding number at least 1/2 inch high. Where only one type and size of hand portable fire...

  19. 76 FR 75771 - Emergency Planning Guidance for Nuclear Power Plants

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-05

    ... Regulatory Commission (NRC) is issuing Supplement 3, ``Guidance for Protective Action Strategies,'' to NUREG... Evacuation Time Estimate Studies;'' all dated November, 2011. These documents update implementation guidance...) studies. This document provides guidance for addressing new EP requirements for nuclear power plants based...

  20. Empirical Data and Emerging Power Critiques: Lessons Learned

    ERIC Educational Resources Information Center

    Stockman, Caroline

    2016-01-01

    This paper evidences the importance of maintaining a dynamic interpretive stance in e-learning research. In particular, it shows how a rigorous methodology, tailored to the research question, overlooked the importance of power and knowledge in technology acceptance research for education. It was perhaps the affordance of the mixed methods design,…

  1. Reserve, thin form-factor, hypochlorite-based cells for powering portable systems: Manufacture (including MEMS processes), performance and characterization

    NASA Astrophysics Data System (ADS)

    Cardenas-Valencia, Andres M.; Biver, Carl J.; Langebrake, Larry

    This work focuses on fabrication routes and performance evaluation of thin form-factors, reserve cells, as a powering alternative for expendable and/or remotely operated systems. The catalytic decomposition of sodium hypochlorite solutions is revisited herein with two cost-effective anodes: zinc and aluminum. Aluminum, even though the most expensive of the utilized anodes, constituted cells with double the energy content (up to 55 Wh kg -1) than those fabricated with zinc. Even though the hypochlorite concentration in the solution limits the cells' operational life, attractive performances (1.0 V with a current of 10 mA) for the manufactured cells are obtained. It is shown that micro fabrication processes, allowing for close electrodes interspacing, provided high faradic and columbic efficiencies of up to 70 and 100%, respectively. Obtained specific energies (50-120 Wh kg -1) are in the same order of magnitude than batteries currently used for powering deployable systems. Experimental results show that a simple model that linearly relates over potentials and the electrical load, adequately describe all the cell designs. A mathematical model based on a kinetic-mechanistic scheme that relates the current output as a function of time agrees fairly well with results obtained activating cells with various concentrations of NaOCl solutions.

  2. Semi-real time electrochemical monitoring for influenza virus RNA by reverse transcription loop-mediated isothermal amplification using a USB powered portable potentiostat.

    PubMed

    Nagatani, Naoki; Yamanaka, Keiichiro; Saito, Masato; Koketsu, Ritsuko; Sasaki, Tadahiro; Ikuta, Kazuyoshi; Miyahara, Toshiro; Tamiya, Eiichi

    2011-12-21

    In this paper, the semi-real time electrochemical monitoring method using a screen-printed electrode, which employs reverse transcription loop-mediated isothermal amplification (RT-LAMP) for influenza virus RNA, is presented. The amplified DNA combined with methylene blue (MB), which was used as an electroactive DNA intercalator, and the electrochemical signal was monitored using square wave voltammetry in the presence of RT-LAMP reagent components. MB molecules binding to amplified DNA caused the reduction of the peak current due to the slow diffusion of MB-amplified DNA complex to the electrode surface. We successfully monitored the amplification process of DNA on the basis of RT-LAMP by measuring and analyzing the electrochemical signal of MB with only one screen-printed electrode that connected with a USB powered portable potentiostat. The peak height of the current was related to the extent of amplification of DNA and the amount of input RNA. Since laborious probe immobilization is not required and both the amplification and the monitoring are possible in a single tube, our method does not suffer from potential cross-contamination. Furthermore, our method provides a new rote for the development of electrochemical hand held biosensors.

  3. COMPUTERIZATION OF NUCLEAR POWER PLANT EMERGENCY OPERATING PROCEDURES.

    SciTech Connect

    OHARA,J.M.; HIGGINS,J.; STUBLER,W.

    2000-07-30

    Emergency operating procedures (EOPs) in nuclear plants guide operators in handling significant process disturbances. Historically these procedures have been paper-based. More recently, computer-based procedure (CBP) systems have been developed to improve the usability of EOPs. The objective of this study was to establish human factors review guidance for CBP systems based on a technically valid methodology. First, a characterization of CBPs was developed for describing their key design features, including both procedure representation and functionality. Then, the research on CBPs and related areas was reviewed. This information provided the technical basis on which the guidelines were developed. For some aspects of CBPs the technical basis was insufficient to develop guidance; these aspects were identified as issues to be addressed in future research.

  4. Portable File Format (PFF) specifications

    SciTech Connect

    Dolan, Daniel H.

    2015-02-01

    Created at Sandia National Laboratories, the Portable File Format (PFF) allows binary data transfer across computer platforms. Although this capability is supported by many other formats, PFF files are still in use at Sandia, particularly in pulsed power research. This report provides detailed PFF specifications for accessing data without relying on legacy code.

  5. The TOMAS software system for approximate analysis of emergency situations at nuclear power stations

    NASA Astrophysics Data System (ADS)

    Zhukavin, A. P.

    2009-05-01

    The TOMAS software system for carrying out prompt analysis of different emergency situations in power units of nuclear power stations equipped with VVER-1000 and RBMK-1000 reactors is described. This software system can be used by experts of crisis centers for evaluating various situations, as well as for teaching students in higher schools specializing in the appropriate disciplines.

  6. TOPICAL REVIEW: Powering MEMS portable devices—a review of non-regenerative and regenerative power supply systems with special emphasis on piezoelectric energy harvesting systems

    NASA Astrophysics Data System (ADS)

    Cook-Chennault, K. A.; Thambi, N.; Sastry, A. M.

    2008-08-01

    Power consumption is forecast by the International Technology Roadmap of Semiconductors (ITRS) to pose long-term technical challenges for the semiconductor industry. The purpose of this paper is threefold: (1) to provide an overview of strategies for powering MEMS via non-regenerative and regenerative power supplies; (2) to review the fundamentals of piezoelectric energy harvesting, along with recent advancements, and (3) to discuss future trends and applications for piezoelectric energy harvesting technology. The paper concludes with a discussion of research needs that are critical for the enhancement of piezoelectric energy harvesting devices.

  7. Portable low power cavity ring-down spectrometer for precise measurement of carbon dioxide, methane and water vapor

    NASA Astrophysics Data System (ADS)

    Fleck, Derek; Hoffnagle, John; Tan, Sze; He, Yonggang

    2016-05-01

    The necessity for monitoring of changing levels of greenhouse gases (GHGs) is clearly evident now more than ever. This has led to large deployments of analytical devices to most remote locations as well as the most densely populated regions around the world. Both large and small scale projects have forced new and old technologies to be pushed to their limits to obtain the highest performing measurements while maintaining a cost effective way to remotely monitor changes in atmospheric concentrations. In order to accomplish these strict guidelines, we present a low-power cavity ring-down spectrometer that measures Carbon Dioxide, Methane and water vapor which can achieve measurements with precisions lower than 20ppb of CO2 and 50ppt of CH4. Comparing to hundreds of watts needed in conventional CRDS design, we demonstrate that the high performance can be achieved with less than 25W. Stability of these measurements has allowed for averaging times of up to 3hr, yielding measurements of methane concentrations with precisions down to 40ppt. This is accomplished utilizing an FSR based frequency scale to determine an absolute frequency scale for these absorption features. Taking advantage of this faster, and less costly measurement technique of CRDS shows future promise with applications spanning scientific and industrial analyses, from isotopes to trace gases.

  8. Durability patch and damage dosimeter: a portable battery-powered data acquisition computer and durability patch design process

    NASA Astrophysics Data System (ADS)

    Haugse, Eric D.; Johnson, Patrick E.; Smith, David L.; Rogers, Lynn C.

    2000-05-01

    Repairs of secondary structure can be accomplished by restoring structural integrity at the damaged area and increasing the structure's damping in the repair region. Increased damping leads to a reduction in resonant response and a repair that will survive for the life of the aircraft. In order to design a repair with effective damping properties, the in-service structural strains and temperatures must be known. A rugged, small and lightweight data acquisition unit called the Damage Dosimeter has been developed to accomplish this task with minimal impact to the aircraft system. Running autonomously off of battery power, the Damage Dosimeter measures three channels of strain at sample rates as high as 15 kilo-samples per second and a single channel of temperature. It merges the functionality of both analog signal conditioning and a digital single board computer on one 3.5 by 5 inch card. The Damage Dosimeter allows an engineer to easily instrument an in-service aircraft to assess the structural response characteristics necessary to properly select damping materials. This information in conjunction with analysis and design procedures can be used to design a repair with optimum effectiveness. This paper will present the motivation behind the development of the Damage Dosimeter along with an overview of its functional capabilities and design. In-service flight data and analysis results will be discussed for two applications. The paper will also describe how the Damage Dosimeter is used to enable the Durability Patch design process.

  9. A 6.45 μW Self-Powered SoC With Integrated Energy-Harvesting Power Management and ULP Asymmetric Radios for Portable Biomedical Systems.

    PubMed

    Roy, Abhishek; Klinefelter, Alicia; Yahya, Farah B; Chen, Xing; Gonzalez-Guerrero, Luisa Patricia; Lukas, Christopher J; Kamakshi, Divya Akella; Boley, James; Craig, Kyle; Faisal, Muhammad; Oh, Seunghyun; Roberts, Nathan E; Shakhsheer, Yousef; Shrivastava, Aatmesh; Vasudevan, Dilip P; Wentzloff, David D; Calhoun, Benton H

    2015-12-01

    This paper presents a batteryless system-on-chip (SoC) that operates off energy harvested from indoor solar cells and/or thermoelectric generators (TEGs) on the body. Fabricated in a commercial 0.13 μW process, this SoC sensing platform consists of an integrated energy harvesting and power management unit (EH-PMU) with maximum power point tracking, multiple sensing modalities, programmable core and a low power microcontroller with several hardware accelerators to enable energy-efficient digital signal processing, ultra-low-power (ULP) asymmetric radios for wireless transmission, and a 100 nW wake-up radio. The EH-PMU achieves a peak end-to-end efficiency of 75% delivering power to a 100 μA load. In an example motion detection application, the SoC reads data from an accelerometer through SPI, processes it, and sends it over the radio. The SPI and digital processing consume only 2.27 μW, while the integrated radio consumes 4.18 μW when transmitting at 187.5 kbps for a total of 6.45 μW.

  10. Portable multiplicity counter

    DOEpatents

    Newell, Matthew R.; Jones, David Carl

    2009-09-01

    A portable multiplicity counter has signal input circuitry, processing circuitry and a user/computer interface disposed in a housing. The processing circuitry, which can comprise a microcontroller integrated circuit operably coupled to shift register circuitry implemented in a field programmable gate array, is configured to be operable via the user/computer interface to count input signal pluses receivable at said signal input circuitry and record time correlations thereof in a total counting mode, coincidence counting mode and/or a multiplicity counting mode. The user/computer interface can be for example an LCD display/keypad and/or a USB interface. The counter can include a battery pack for powering the counter and low/high voltage power supplies for biasing external detectors so that the counter can be configured as a hand-held device for counting neutron events.

  11. The Portable War Room Research Project

    NASA Technical Reports Server (NTRS)

    Govers, Francis X., III; Fry, Mark

    1997-01-01

    The Portable War Room is an internal TASC project to research and develop a visualization and simulation environment to provide for decision makers the power to review the past, understand the present, and peer into the future.

  12. The Portable War Room Research Project

    NASA Technical Reports Server (NTRS)

    Govers, Francis X., III; Fry, Mark

    1997-01-01

    The Portable War Room is an internal TASC project to research and develop a visualization and simulation environment to provide for decision makers the power to review the past, understand the present, and peer into the future.

  13. [Portable instrument for arteriosclerosis assessment].

    PubMed

    Cao, Shuai; Chen, Xiang

    2014-01-01

    A portable instrument for arteriosclerosis assessment containing sensor module, acquisition board and embedded module was developed for home care in this paper. The sensor module consists of one ECG module and three pulse wave extraction modules, synchronously acquiring human ECG and pulse wave signal of carotid, radial, and dorsal, respectively. The acquisition board converts the sensor module's analog output signals into digital signals and transmits them to the embedded module. The embedded module realizes the functions including signal display, storage and the calculation and output of pulse wave velocity. The structure of the proposed portable instrument is simple, easy to use, and easy to expand. Small size, low cost, and low power consumption are also the advantages of this device. Experimental results demonstrated that the proposed portable instrument for arteriosclerosis assessment has high accuracy, good repeatability and can assess the degree of atherosclerosis appropriately.

  14. Portable MRI

    SciTech Connect

    Espy, Michelle A.

    2012-06-29

    This project proposes to: (1) provide the power of MRI to situations where it presently isn't available; (2) perform the engineering required to move from lab to a functional prototype; and (3) leverage significant existing infrastructure and capability in ultra-low field MRI. The reasons for doing this: (1) MRI is the most powerful tool for imaging soft-tissue (e.g. brain); (2) Billions don't have access due to cost or safety issues; (3) metal will heat/move in high magnetic fields; (4) Millions of cases of traumatic brain injury in US alone; (5) even more of non-traumatic brain injury; (6) (e.g. stroke, infection, chemical exposure); (7) Need for early diagnostic; (8) 'Signature' wound of recent conflicts; (9) 22% of injuries; (10) Implications for post-traumatic stress disorder; and (11) chronic traumatic encephalopathy.

  15. Portable Powerhouses.

    ERIC Educational Resources Information Center

    Myslewski, Rik; Garcia, Nathan

    1998-01-01

    Reviews and compares the following nine laptop computers, focusing on their capabilities for multimedia presentations: Apple Macintosh PowerBook G3, Chem USA ChemBook 9780, Compaq Armada 7792DMT, Dell Inspiron 3000 mZ66xT, Hewlett-Packard OmniBook 3000CTX, IBM ThinkPad 770, Micro Express NP8233MMX, NEC Versa 6260, and Panasonic CF-63. Evaluation…

  16. Portable Powerhouses.

    ERIC Educational Resources Information Center

    Myslewski, Rik; Garcia, Nathan

    1998-01-01

    Reviews and compares the following nine laptop computers, focusing on their capabilities for multimedia presentations: Apple Macintosh PowerBook G3, Chem USA ChemBook 9780, Compaq Armada 7792DMT, Dell Inspiron 3000 mZ66xT, Hewlett-Packard OmniBook 3000CTX, IBM ThinkPad 770, Micro Express NP8233MMX, NEC Versa 6260, and Panasonic CF-63. Evaluation…

  17. 14 CFR 121.309 - Emergency equipment.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Emergency equipment. 121.309 Section 121.309 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED...) Megaphones. Each passenger-carrying airplane must have a portable battery-powered megaphone or...

  18. HEMP emergency planning and operating procedures for electric power systems. Power Systems Technology Program

    SciTech Connect

    Reddoch, T.W.; Markel, L.C.

    1991-12-31

    Investigations of the impact of high-altitude electromagnetic pulse (HEMP) on electric power systems and electrical equipment have revealed that HEMP creates both misoperation and failures. These events result from both the early time E{sub 1} (steep-front pulse) component and the late time E{sub 3} (geomagnetic perturbations) component of HEMP. In this report a HEMP event is viewed in terms of its marginal impact over classical power system disturbances by considering the unique properties and consequences of HEMP. This report focuses on system-wide electrical component failures and their potential consequences from HEMP. In particular, the effectiveness of planning and operating procedures for electric systems is evaluated while under the influence of HEMP. This assessment relies on published data and characterizes utilities using the North American Electric Reliability Council`s regions and guidelines to model electric power system planning and operations. Key issues addressed by the report include how electric power systems are affected by HEMP and what actions electric utilities can initiate to reduce the consequences of HEMP. The report also reviews the salient features of earlier HEMP studies and projects, examines technology trends in the electric power industry which are affected by HEMP, characterizes the vulnerability of power systems to HEMP, and explores the capability of electric systems to recover from a HEMP event.

  19. Compact, Portable Pulsed-Power

    DTIC Science & Technology

    2006-08-31

    The idea of replacing the charging resistor chain in a pseudospark Marx generator with HV diodes was simulated with MOSFET switches. The MOSFET Marx...stage diode-chain isolated MOSFET Marx generator circuit. .MOFET :÷Ouzp I ° . ,,, Figure 2. The output of the first two stages of the MOSFET Marx...pseudospark trigger suffered from intermittent failure due to the sensitive MOSFETs used in the circuit. The trigger circuit has since been redesigned with

  20. Laser power beaming: an emerging technology for power transmission and propulsion in space

    NASA Astrophysics Data System (ADS)

    Bennett, Harold E.

    1997-05-01

    A ground based laser beam transmitted to space can be used as an electric utility for satellites. It can significantly increase the electric power available to operate a satellite or to transport it from low earth orbit (LEO) to mid earth or geosynchronous orbits. The increase in electrical power compared to that obtainable from the sun is as much as 1000% for the same size solar panels. An increase in satellite electric power is needed to meet the increasing demands for power caused by the advent of 'direct to home TV,' for increased telecommunications, or for other demands made by the burgeoning 'space highway.' Monetary savings as compared to putting up multiple satellites in the same 'slot' can be over half a billion dollars. To obtain propulsion, the laser power can be beamed through the atmosphere to an 'orbit transfer vehicle' (OTV) satellite which travels back and forth between LEO and higher earth orbits. The OTV will transport the satellite into orbit as does a rocket but does not require the heavy fuel load needed if rocket propulsion is used. Monetary savings of 300% or more in launch costs are predicted. Key elements in the proposed concept are a 100 to 200 kW free- electron laser operating at 0.84 m in the photographic infrared region of the spectrum and a novel adaptive optic telescope.

  1. Portable Cooler/Warmers

    NASA Technical Reports Server (NTRS)

    1994-01-01

    Early in the space program, NASA recognized the need to replace bulky coils, compressers, and motors for refrigeration purposes by looking at existing thermoelectric technology. This effort resulted in the development of miniaturized thermoelectric components and packaging to accommodate tight confines of spacecraft. Koolatron's portable electronic refrigerators incorporate this NASA technology. Each of the cooler/warmers employs one or two miniaturized thermoelectric modules. Although each module is only the size of a book of matches, it delivers the cooling power of a 10-pound block of ice. In some models, the cooler can be converted to a warmer. There are no moving parts. The Koolatrons can be plugged into auto cigarette lighters, recreational vehicles, boats or motel outlets.

  2. Real-time 3D adaptive filtering for portable imaging systems

    NASA Astrophysics Data System (ADS)

    Bockenbach, Olivier; Ali, Murtaza; Wainwright, Ian; Nadeski, Mark

    2015-03-01

    Portable imaging devices have proven valuable for emergency medical services both in the field and hospital environments and are becoming more prevalent in clinical settings where the use of larger imaging machines is impractical. 3D adaptive filtering is one of the most advanced techniques aimed at noise reduction and feature enhancement, but is computationally very demanding and hence often not able to run with sufficient performance on a portable platform. In recent years, advanced multicore DSPs have been introduced that attain high processing performance while maintaining low levels of power dissipation. These processors enable the implementation of complex algorithms like 3D adaptive filtering, improving the image quality of portable medical imaging devices. In this study, the performance of a 3D adaptive filtering algorithm on a digital signal processor (DSP) is investigated. The performance is assessed by filtering a volume of size 512x256x128 voxels sampled at a pace of 10 MVoxels/sec.

  3. 33 CFR 149.660 - What are the requirements for emergency power?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false What are the requirements for emergency power? 149.660 Section 149.660 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DEEPWATER PORTS DEEPWATER PORTS: DESIGN, CONSTRUCTION, AND EQUIPMENT Design...

  4. Solar Power Generation for ICT and Sustainable Development in Emerging Economies

    ERIC Educational Resources Information Center

    Paul, Damasen I.; Uhomoibhi, James

    2012-01-01

    Purpose: The purpose of this paper is to systematically examine and draw attention to the potential benefits of solar power generation for access to and use of information and communication technologies (ICT) aimed at sustainable development in emerging economies. Design/methodology/approach: Electricity plays a crucial role in the development and…

  5. Solar Power Generation for ICT and Sustainable Development in Emerging Economies

    ERIC Educational Resources Information Center

    Paul, Damasen I.; Uhomoibhi, James

    2012-01-01

    Purpose: The purpose of this paper is to systematically examine and draw attention to the potential benefits of solar power generation for access to and use of information and communication technologies (ICT) aimed at sustainable development in emerging economies. Design/methodology/approach: Electricity plays a crucial role in the development and…

  6. 46 CFR 108.139 - Boundary bulkheads and decks of a space containing emergency power.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Boundary bulkheads and decks of a space containing emergency power. 108.139 Section 108.139 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Structural Fire Protection § 108.139 Boundary bulkheads and deck...

  7. 46 CFR 190.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Segregation of spaces containing the emergency source of electric power. 190.05-15 Section 190.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS CONSTRUCTION AND ARRANGEMENT General Fire Protection § 190.05-15 Segregation of spaces containing the...

  8. 46 CFR 92.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Segregation of spaces containing the emergency source of electric power. 92.05-15 Section 92.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS CONSTRUCTION AND ARRANGEMENT General Fire Protection § 92.05-15 Segregation of spaces containing the...

  9. 46 CFR 190.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Segregation of spaces containing the emergency source of electric power. 190.05-15 Section 190.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS CONSTRUCTION AND ARRANGEMENT General Fire Protection § 190.05-15 Segregation of spaces containing the...

  10. 46 CFR 190.05-15 - Segregation of spaces containing the emergency source of electric power.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Segregation of spaces containing the emergency source of electric power. 190.05-15 Section 190.05-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS CONSTRUCTION AND ARRANGEMENT General Fire Protection § 190.05-15 Segregation of spaces containing the...

  11. THE FLUID POWER INSTITUTES TESTED PROCEDURES FOR INTRODUCING EMERGING TECHNOLOGIES, 1966.

    ERIC Educational Resources Information Center

    BAYSINGER, GERALD

    TO EXPLORE NEW WAYS OF INTRODUCING EMERGING TECHNOLOGIES INTO SCHOOLS, FLUID POWER INSTITUTES WERE HELD IN 1964 AND 1965, AND THE SUCCESSFUL PROCEDURES FROM THE TWO WERE THE BASIS FOR PLANNING THE 1966 INSTITUTES HELD IN FIVE INSTITUTIONS HAVING TEACHER EDUCATION PROGRAMS. SEVENTY-FIVE HIGH SCHOOL OR COLLEGE LEVEL TEACHERS FROM 25 STATES…

  12. 46 CFR 108.139 - Boundary bulkheads and decks of a space containing emergency power.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Boundary bulkheads and decks of a space containing emergency power. 108.139 Section 108.139 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Structural Fire...

  13. 46 CFR 108.139 - Boundary bulkheads and decks of a space containing emergency power.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Boundary bulkheads and decks of a space containing emergency power. 108.139 Section 108.139 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Structural...

  14. 46 CFR 108.139 - Boundary bulkheads and decks of a space containing emergency power.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Boundary bulkheads and decks of a space containing emergency power. 108.139 Section 108.139 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Structural...

  15. The radiological emergency plan to the Laguna Verde Nuclear Power Plant

    SciTech Connect

    Villard, M.M.; Magana, R.O. )

    1992-01-01

    In this paper, it is described the main characteristics of the area surrounding the Laguna Verde Nuclear Power Plant, in terms of population, main economic activities, housing and infrastructure. Based on those factors, the most important features of the Radiological Emergency Plan are described.

  16. [Practices of power in the Mobile Emergency Medical Service of Belo Horizonte].

    PubMed

    Veloso, Isabela Silva Cancio; Araujo, Meiriele Tavares; Alves, Marília

    2012-12-01

    The work of Mobile Emergency Medical Service (SAMU) involves the participation of several professionals that meet the demands of different levels of complexity in a huge geographic territory, with planning different of services with exclusively fixed structures. The aim of this study was to analyze the configuration of practices of power in the daily work of professionals of the SAMU. It was a qualitative case study which had been set in the SAMU of Belo Horizonte, Minas Gerais, Brazil. The sample was composed by 31 workers and data were collected using semi-structured interview and than submitted to discourse analysis. In the context of struggles and power relations in SAMU, stands out 'the power of zero vacancy' and the 'uniform bodies and images of power in the SAMU'. It was possible to observe that power in SAMU is present as social practice, with its centrality moving according to lived situations and to interests in question.

  17. Emergency and backup power supplies at Department of Energy facilities: Augmented Evaluation Team -- Final report

    SciTech Connect

    Not Available

    1993-11-01

    This report documents the results of the Defense Programs (DP) Augmented Evaluation Team (AET) review of emergency and backup power supplies (i.e., generator, uninterruptible power supply, and battery systems) at DP facilities. The review was conducted in response to concerns expressed by former Secretary of Energy James D. Watkins over the number of incidents where backup power sources failed to provide electrical power during tests or actual demands. The AET conducted a series of on-site reviews for the purpose of understanding the design, operation, maintenance, and safety significance of emergency and backup power (E&BP) supplies. The AET found that the quality of programs related to maintenance of backup power systems varies greatly among the sites visited, and often among facilities at the same site. No major safety issues were identified. However, there are areas where the AET believes the reliability of emergency and backup power systems can and should be improved. Recommendations for improving the performance of E&BP systems are provided in this report. The report also discusses progress made by Management and Operating (M&O) contractors to improve the reliability of backup sources used in safety significant applications. One area that requires further attention is the analysis and understanding of the safety implications of backup power equipment. This understanding is needed for proper graded-approach implementation of Department of Energy (DOE) Orders, and to help ensure that equipment important to the safety of DOE workers, the public, and the environment is identified, classified, recognized, and treated as such by designers, users, and maintainers. Another area considered important for improving E&BP system performance is the assignment of overall ownership responsibility and authority for ensuring that E&BP equipment performs adequately and that reliability and availability are maintained at acceptable levels.

  18. Architecture for portable direct liquid fuel cells

    NASA Astrophysics Data System (ADS)

    Qian, Weimin; Wilkinson, David P.; Shen, Jun; Wang, Haijiang; Zhang, Jiujun

    Direct fuel cells (DFCs) are receiving increased interest for portable power applications. Cell and stack architecture is a vital technical issue for portable DFCs. The architecture of a DFC not only has to meet particular application requirements such as a compact size and easy handling, but also has to ensure desired performance, reliability and fabrication costs. In this paper, the most recent advances related to portable DFCs and their architecture are reviewed. The current status of system architecture, stack/unit cell architecture, flow-field designs and MEA morphology strategies along with analysis are surveyed. In addition, promising methods of passive fuel delivery are also presented.

  19. Indian Point Nuclear Power Station: verification analysis of County Radiological Emergency-Response Plans

    SciTech Connect

    Nagle, J.; Whitfield, R.

    1983-05-01

    This report was developed as a management tool for use by the Federal Emergency Management Agency (FEMA) Region II staff. The analysis summarized in this report was undertaken to verify the extent to which procedures, training programs, and resources set forth in the County Radiological Emergency Response Plans (CRERPs) for Orange, Putnam, and Westchester counties in New York had been realized prior to the March 9, 1983, exercise of the Indian Point Nuclear Power Station near Buchanan, New York. To this end, a telephone survey of county emergency response organizations was conducted between January 19 and February 22, 1983. This report presents the results of responses obtained from this survey of county emergency response organizations.

  20. Community emergency response to nuclear power plant accidents: A selected and partially annotated bibliography

    SciTech Connect

    Youngen, G.

    1988-10-01

    The role of responding to emergencies at nuclear power plants is often considered the responsibility of the personnel onsite. This is true for most, if not all, of the incidents that may happen during the course of the plant`s operating lifetime. There is however, the possibility of a major accident occurring at anytime. Major nuclear accidents at Chernobyl and Three Mile Island have taught their respective countries and communities a significant lesson in local emergency preparedness and response. Through these accidents, the rest of the world can also learn a great deal about planning, preparing and responding to the emergencies unique to nuclear power. This bibliography contains books, journal articles, conference papers and government reports on emergency response to nuclear power plant accidents. It does not contain citations for ``onsite`` response or planning, nor does it cover the areas of radiation releases from transportation accidents. The compiler has attempted to bring together a sampling of the world`s collective written experience on dealing with nuclear reactor accidents on the sate, local and community levels. Since the accidents at Three Mile Island and Chernobyl, that written experience has grown enormously.

  1. Israeli emergency department nurses' attitudes to an extension of their role and powers.

    PubMed

    Azuri, Pazit; Haron, Yafa; Riba, Shoshana

    2014-01-01

    To investigate the opinions of Israeli ED nurses as to (1) an expansion of their powers and autonomy in treating commonly presenting ED conditions, (2) whether nurses or physicians should be responsible for giving ED patients necessary information and (3) whether ED nurses should perform triage. The development of the new emergency nurse practitioner role has relieved the pressure on emergency departments, reduced patient waiting times and raised patient satisfaction. Israel has yet to introduce either this role or the triage approach into its emergency departments. This investigation was designed as a cross-sectional study by self-administered questionnaire. The researchers distributed a questionnaire they had developed and validated to 270 registered nurses working in 18 general hospital emergency departments. The responses were analysed by chi-square and t-tests and anova. Of respondents 60-90% agreed that they should be granted 10 out of a list of 12 new powers, and a large majority thought nurses should be responsible for performing triage. They wanted to increase the information they gave to patients, both on general ED functioning and on specific medically related matters. The contribution of this study is the positive response of a large representative sample of ED nurses to extending their powers. It will be necessary to establish postregistration training courses and draw up new regulations reshaping the delivery of emergency medicine. The study demonstrates that ED nurses are convinced that they need the authority to diagnose and treat commonly presenting ED conditions and perform triage and discharge in order for their department to optimally exploit the resources available to it. The study should promote the development of the emergency nurse practitioner role in Israel and so reduce patient waiting times. © 2013 John Wiley & Sons Ltd.

  2. An Effective Electrical Throughput from PANI Supplement ZnS Nanorods and PDMS-Based Flexible Piezoelectric Nanogenerator for Power up Portable Electronic Devices: An Alternative of MWCNT Filler.

    PubMed

    Sultana, Ayesha; Alam, Md Mehebub; Garain, Samiran; Sinha, Tridib Kumar; Middya, Tapas Ranjan; Mandal, Dipankar

    2015-09-02

    We demonstrate the requirement of electrical poling can be avoided in flexible piezoelectric nanogenerators (FPNGs) made of low-temperature hydrothermally grown wurtzite zinc sulfide nanorods (ZnS-NRs) blended with polydimethylsiloxane (PDMS). It has been found that conductive fillers, such as polyaniline (PANI) and multiwall carbon nanotubes (MWCNTs), can subsequently improve the overall performance of FPNG. A large electrical throughput (open circuit voltage ∼35 V with power density ∼2.43 μW/cm(3)) from PANI supplement added nanogenerator (PZP-FPNG) indicates that it is an effective means to replace the MWCNTs filler. The time constant (τ) estimated from the transient response of the capacitor charging curves signifying that the FPNGs are very much capable to charge the capacitors in very short time span (e.g., 3 V is accomplished in 50 s) and thus expected to be perfectly suitable in portable, wearable and flexible electronics devices. We demonstrate that FPNG can instantly lit up several commercial Light Emitting Diodes (LEDs) (15 red, 25 green, and 55 blue, individually) and power up several portable electronic gadgets, for example, wrist watch, calculator, and LCD screen. Thus, a realization of potential use of PANI in low-temperature-synthesized ZnS-NRs comprising piezoelectric based nanogenerator fabrication is experimentally verified so as to acquire a potential impact in sustainable energy applications. Beside this, wireless piezoelectric signal detection possibility is also worked out where a concept of self-powered smart sensor is introduced.

  3. High performance 3D adaptive filtering for DSP based portable medical imaging systems

    NASA Astrophysics Data System (ADS)

    Bockenbach, Olivier; Ali, Murtaza; Wainwright, Ian; Nadeski, Mark

    2015-03-01

    Portable medical imaging devices have proven valuable for emergency medical services both in the field and hospital environments and are becoming more prevalent in clinical settings where the use of larger imaging machines is impractical. Despite their constraints on power, size and cost, portable imaging devices must still deliver high quality images. 3D adaptive filtering is one of the most advanced techniques aimed at noise reduction and feature enhancement, but is computationally very demanding and hence often cannot be run with sufficient performance on a portable platform. In recent years, advanced multicore digital signal processors (DSP) have been developed that attain high processing performance while maintaining low levels of power dissipation. These processors enable the implementation of complex algorithms on a portable platform. In this study, the performance of a 3D adaptive filtering algorithm on a DSP is investigated. The performance is assessed by filtering a volume of size 512x256x128 voxels sampled at a pace of 10 MVoxels/sec with an Ultrasound 3D probe. Relative performance and power is addressed between a reference PC (Quad Core CPU) and a TMS320C6678 DSP from Texas Instruments.

  4. Dose-projection considerations for emergency conditions at nuclear power plants

    SciTech Connect

    Stoetzel, G.A.; Ramsdell, J.V.; Poeton, R.W.; Powell, D.C.; Desrosiers, A.E.

    1983-05-01

    The purpose of this report is to review the problems and issues associated with making environmental radiation-dose projections during emergencies at nuclear power plants. The review is divided into three areas: source-term development, characterization of atmospheric dispersion and selection of appropriate dispersion models, and development of dosimetry calculations for determining thyroid dose and whole-body dose for ground-level and elevated releases. A discussion of uncertainties associated with these areas is also provided.

  5. Evaluation of the emergency warning system at the Fort St. Vrain nuclear power plant

    SciTech Connect

    Sorensen, J.H.

    1982-11-01

    The Fort St. Vrain power plant is the only high-temperature gas-cooled reactor (HTGR) in commercial operation in the United States. All commercial reactors, regardless of technology, must conform to Nuclear Regulatory Commission emergency planning regulations developed in light of Clarification of TMI Action Plan Requirements (NUREG-0737). This report analyzes the applicability of warning-related planning requirements to HTGRs and evaluates the strengths and weaknesses of warning procedures at Fort St. Vrain.

  6. Computer study of emergency shutdowns of a 60-kilowatt reactor Brayton space power system

    NASA Technical Reports Server (NTRS)

    Tew, R. C.; Jefferies, K. S.

    1974-01-01

    A digital computer study of emergency shutdowns of a 60-kWe reactor Brayton power system was conducted. Malfunctions considered were (1) loss of reactor coolant flow, (2) loss of Brayton system gas flow, (3)turbine overspeed, and (4) a reactivity insertion error. Loss of reactor coolant flow was the most serious malfunction for the reactor. Methods for moderating the reactor transients due to this malfunction are considered.

  7. Self-Powered Safety Helmet Based on Hybridized Nanogenerator for Emergency.

    PubMed

    Jin, Long; Chen, Jun; Zhang, Binbin; Deng, Weili; Zhang, Lei; Zhang, Haitao; Huang, Xi; Zhu, Minhao; Yang, Weiqing; Wang, Zhong Lin

    2016-08-23

    The rapid development of Internet of Things and the related sensor technology requires sustainable power sources for their continuous operation. Scavenging and utilizing the ambient environmental energy could be a superior solution. Here, we report a self-powered helmet for emergency, which was powered by the energy converted from ambient mechanical vibration via a hybridized nanogenerator that consists of a triboelectric nanogenerator (TENG) and an electromagnetic generator (EMG). Integrating with transformers and rectifiers, the hybridized nanogenerator can deliver a power density up to 167.22 W/m(3), which was demonstrated to light up 1000 commercial light-emitting diodes (LEDs) instantaneously. By wearing the developed safety helmet, equipped with rationally designed hybridized nanogenerator, the harvested vibration energy from natural human motion is also capable of powering a wireless pedometer for real-time transmitting data reporting to a personal cell phone. Without adding much extra weight to a commercial one, the developed wearing helmet can be a superior sustainable power source for explorers, engineers, mine-workers under well, as well as and disaster-relief workers, especially in remote areas. This work not only presents a significant step toward energy harvesting from human biomechanical movement, but also greatly expands the applicability of TENGs as power sources for self-sustained electronics.

  8. [Medical emergency planning in case of severe nuclear power plant accidents].

    PubMed

    Ohlenschläger, L

    1980-08-21

    This paper is an attempt to discuss a three-step-plan on medical emergency planning in case of severe accidents at nuclear power plants on the basis of own experiences in the regional area as well as on the basis of recommendations of the Federal Minister of the Interior. The medical considerations take account of the severity and extension of an accident whereby the current definitions used in nuclear engineering for accident situations are taken as basis. A comparison between obligatory and actual state is made on the possibilities of medical emergency planning, taking all capacities of staff, facilities, and equipment available in the Federal Republic of Germany into account. To assure a useful and quick utilization of the existing infra-structure as well as nation-wide uniform training of physicians and medical assistants in the field of medical emergency in case of a nuclear catastrophe, a federal law for health protection is regarded urgently necessary.

  9. Configurations of power relations in the Brazilian emergency care system: analyzing a context of visible practices.

    PubMed

    Velloso, Isabela; Ceci, Christine; Alves, Marilia

    2013-09-01

    In this paper, we make explicit the changing configurations of power relations that currently characterize the Brazilian Emergency Care System (SAMU) team in Belo Horizonte, Brazil. The SAMU is a recent innovation in Brazilian healthcare service delivery. A qualitative case study methodology was used to explore SAMU's current organizational arrangements, specifically the power relations that have developed and that demonstrate internal team struggles over space and defense of particular occupational interests. The argument advanced in this paper is that these professionals are developing their work in conditions of exposure, that is, they are always being observed by someone, and that such observational exposure provides the conditions whereby everyday emergency care practices are enacted such that practice is shaped by, as well as shapes, particular, yet recognizable power relationships. Data were collected through the observation of the SAMU's work processes and through semi-structured interviews. Research materials were analyzed using discourse analysis. In the emergency care process of work, visibility is actually embedded in the disciplinary context and can thus be analyzed as a technique applied to produce disciplined individuals through the simple mechanisms elaborated by Foucault such as hierarchical surveillance, normalizing judgment, and the examination. © 2012 John Wiley & Sons Ltd.

  10. Portable liquid collection electrostatic precipitator

    DOEpatents

    Carlson, Duane C.; DeGange, John J.; Halverson, Justin E.

    2005-10-18

    A portable liquid collection electrostatic collection precipitator for analyzing air is provided which is a relatively small, self-contained device. The device has a tubular collection electrode, a reservoir for a liquid, and a pump. The pump pumps the liquid into the collection electrode such that the liquid flows down the exterior of the collection electrode and is recirculated to the reservoir. An air intake is provided such that air to be analyzed flows through an ionization section to ionize analytes in the air, and then flows near the collection electrode where ionized analytes are collected. A portable power source is connected to the air intake and the collection electrode. Ionizable constituents in the air are ionized, attracted to the collection electrode, and precipitated in the liquid. The precipitator may also have an analyzer for the liquid and may have a transceiver allowing remote operation and data collection.

  11. Portable modular detection system

    DOEpatents

    Brennan, James S.; Singh, Anup; Throckmorton, Daniel J.; Stamps, James F.

    2009-10-13

    Disclosed herein are portable and modular detection devices and systems for detecting electromagnetic radiation, such as fluorescence, from an analyte which comprises at least one optical element removably attached to at least one alignment rail. Also disclosed are modular detection devices and systems having an integrated lock-in amplifier and spatial filter and assay methods using the portable and modular detection devices.

  12. Software Engineering for Portability.

    ERIC Educational Resources Information Center

    Stanchev, Ivan

    1990-01-01

    Discussion of the portability of educational software focuses on the software design and development process. Topics discussed include levels of portability; the user-computer dialog; software engineering principles; design techniques for student performance records; techniques of courseware programing; and suggestions for further research and…

  13. 46 CFR 196.37-23 - Hand portable fire extinguishers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Hand portable fire extinguishers. 196.37-23 Section 196.37-23 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS OPERATIONS Markings for Fire and Emergency Equipment, etc. § 196.37-23 Hand portable fire...

  14. 14 CFR 121.333 - Supplemental oxygen for emergency descent and for first aid; turbine engine powered airplanes...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... and for first aid; turbine engine powered airplanes with pressurized cabins. 121.333 Section 121.333... for emergency descent and for first aid; turbine engine powered airplanes with pressurized cabins. (a) General. When operating a turbine engine powered airplane with a pressurized cabin, the certificate holder...

  15. 14 CFR 121.333 - Supplemental oxygen for emergency descent and for first aid; turbine engine powered airplanes...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... and for first aid; turbine engine powered airplanes with pressurized cabins. 121.333 Section 121.333... for emergency descent and for first aid; turbine engine powered airplanes with pressurized cabins. (a) General. When operating a turbine engine powered airplane with a pressurized cabin, the certificate holder...

  16. 46 CFR 32.60-45 - Segregation of spaces containing the emergency source of electric power-TB/ALL.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... electric power-TB/ALL. 32.60-45 Section 32.60-45 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK... October 1, 1958. (b) When a compartment containing the emergency source of electric power, or vital... source of electric power, or vital components thereof, for a period of at least one hour in the event...

  17. 46 CFR 32.60-45 - Segregation of spaces containing the emergency source of electric power-TB/ALL.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... electric power-TB/ALL. 32.60-45 Section 32.60-45 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK... October 1, 1958. (b) When a compartment containing the emergency source of electric power, or vital... source of electric power, or vital components thereof, for a period of at least one hour in the event...

  18. 46 CFR 32.60-45 - Segregation of spaces containing the emergency source of electric power-TB/ALL.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... electric power-TB/ALL. 32.60-45 Section 32.60-45 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK... October 1, 1958. (b) When a compartment containing the emergency source of electric power, or vital... source of electric power, or vital components thereof, for a period of at least one hour in the event...

  19. 46 CFR 32.60-45 - Segregation of spaces containing the emergency source of electric power-TB/ALL.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... electric power-TB/ALL. 32.60-45 Section 32.60-45 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK... October 1, 1958. (b) When a compartment containing the emergency source of electric power, or vital... source of electric power, or vital components thereof, for a period of at least one hour in the event...

  20. 46 CFR 32.60-45 - Segregation of spaces containing the emergency source of electric power-TB/ALL.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... electric power-TB/ALL. 32.60-45 Section 32.60-45 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK... October 1, 1958. (b) When a compartment containing the emergency source of electric power, or vital... source of electric power, or vital components thereof, for a period of at least one hour in the event...

  1. Emergency/disaster medical support in the restoration project for the Fukushima nuclear power plant accident.

    PubMed

    Morimura, Naoto; Asari, Yasushi; Yamaguchi, Yoshihiro; Asanuma, Kazunari; Tase, Choichiro; Sakamoto, Tetsuya; Aruga, Tohru

    2013-12-01

    The Fukushima Daiichi Nuclear Power Plant (1F) suffered a series of radiation accidents after the Great East Japan Earthquake on 11 March 2011. In a situation where halting or delaying restoration work was thought to translate directly into a very serious risk for the entire country, it was of the utmost importance to strengthen the emergency and disaster medical system in addition to radiation emergency medical care for staff at the frontlines working in an environment that posed a risk of radiation exposure and a large-scale secondary disaster. The Japanese Association for Acute Medicine (JAAM) launched the 'Emergency Task Force on the Fukushima Nuclear Power Plant Accident' and sent physicians to the local response headquarters. Thirty-four physicians were dispatched as disaster medical advisors, response guidelines in the event of multitudinous injury victims were created and revised and, along with execution of drills, coordination and advice was given on transport of patients. Forty-nine physicians acted as directing physicians, taking on the tasks of triage, initial treatment and decontamination. A total of 261 patients were attended to by the dispatched physicians. None of the eight patients with external contamination developed acute radiation syndrome. In an environment where the collaboration between organisations in the framework of a vertically bound government and multiple agencies and institutions was certainly not seamless, the participation of the JAAM as the medical academic organisation in the local system presented the opportunity to laterally integrate the physicians affiliated with the respective organisations from the perspective of specialisation.

  2. Developing a taxonomy of coordination behaviours in nuclear power plant control rooms during emergencies.

    PubMed

    Wang, Dunxing; Gao, Qin; Li, Zhizhong; Song, Fei; Ma, Liang

    2017-05-19

    This study aims to develop a taxonomy of coordination behaviours during emergencies in nuclear power plants (NPPs). We summarised basic coordination behaviours from literature in aviation, health care and nuclear field and identified coordination behaviours specific to the nuclear domain by interviewing and surveying control crew operators. The established taxonomy includes 7 workflow stages and 24 basic coordination behaviours. To evaluate the reliability and feasibility of the taxonomy, we analysed 12 videos of operators' training sessions by coding coordination behaviours with the taxonomy and the inter-rater reliability was acceptable. Further analysis of the frequency, the duration and the direction of the coordination behaviours revealed four coordination problems. This taxonomy provides a foundation of systematic observation of coordination behaviours among NPP crews, advances researchers' understanding of the coordination mechanism during emergencies in NPPs and facilitate the possibility to deepen the understanding of the relationships between coordination behaviours and team performance. Practitioner Summary: A taxonomy of coordination behaviours during emergencies in nuclear power plants was developed. Reliability and feasibility of the taxonomy was verified through the analysis of 12 training sessions. The taxonomy can serve as an observation system for analysis of coordination behaviours and help to identify coordination problems of control crews.

  3. Mental workload measurement for emergency operating procedures in digital nuclear power plants.

    PubMed

    Gao, Qin; Wang, Yang; Song, Fei; Li, Zhizhong; Dong, Xiaolu

    2013-01-01

    Mental workload is a major consideration for the design of emergency operation procedures (EOPs) in nuclear power plants. Continuous and objective measures are desired. This paper compares seven mental workload measurement methods (pupil size, blink rate, blink duration, heart rate variability, parasympathetic/sympathetic ratio, total power and (Goals, Operations, Methods, and Section Rules)-(Keystroke Level Model) GOMS-KLM-based workload index) with regard to sensitivity, validity and intrusiveness. Eighteen participants performed two computerised EOPs of different complexity levels, and mental workload measures were collected during the experiment. The results show that the blink rate is sensitive to both the difference in the overall task complexity and changes in peak complexity within EOPs, that the error rate is sensitive to the level of arousal and correlate to the step error rate and that blink duration increases over the task period in both low and high complexity EOPs. Cardiac measures were able to distinguish tasks with different overall complexity. The intrusiveness of the physiological instruments is acceptable. Finally, the six physiological measures were integrated using group method of data handling to predict perceived overall mental workload. The study compared seven measures for evaluating the mental workload with emergency operation procedure in nuclear power plants. An experiment with simulated procedures was carried out, and the results show that eye response measures are useful for assessing temporal changes of workload whereas cardiac measures are useful for evaluating the overall workload.

  4. Human portable preconcentrator system

    DOEpatents

    Linker, Kevin L.; Bouchier, Francis A.; Hannum, David W.; Rhykerd, Jr., Charles L.

    2003-01-01

    A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon heating, to release those chemicals into the chamber. Chemicals captured and then released in this fashion are then carried to a portable chemical detection device such as a portable ion mobility spectrometer. In the preferred embodiment, the means for drawing sample into the chamber comprises a reversible fan which, when operated in reverse direction, creates a backpressure that facilitates evolution of captured target chemicals into the chamber when the screen is heated.

  5. A methanol/oxygen burning combustor for an aircraft auxiliary emergency power unit

    SciTech Connect

    Carr, E.; Todd, H. , Burnley, Lancashire )

    1989-01-01

    The development of advanced single-engine aircraft with reduced stability and Fly-by-Wire control systems requires the provision of emergency hydraulic and electrical power from a stored energy system. The desire to achieve this objective using readily available fluids of low toxicity has led to the development of a methanol/oxygen burning combustor to provide a hot gas stream to drive a small turbine. The paper describes the performance of a 300 kW output combustor, which is cooled by the methanol consumed.

  6. Trial application of reliability technology to emergency diesel generators at the Trojan Nuclear Power Plant

    SciTech Connect

    Wong, S.M.; Boccio, J.L.; Karimian, S.; Azarm, M.A.; Carbonaro, J.; DeMoss, G.

    1986-01-01

    In this paper, a trial application of reliability technology to the emergency diesel generator system at the Trojan Nuclear Power Plant is presented. An approach for formulating a reliability program plan for this system is being developed. The trial application has shown that a reliability program process, using risk- and reliability-based techniques, can be interwoven into current plant operational activities to help in controlling, analyzing, and predicting faults that can challenge safety systems. With the cooperation of the utility, Portland General Electric Co., this reliability program can eventually be implemented at Trojan to track its effectiveness.

  7. Portable X-Ray Device

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Portable x-ray instrument developed by NASA now being produced commercially as an industrial tool may soon find further utility as a medical system. The instrument is Lixiscope - Low Intensity X-Ray Imaging Scope -- a self-contained, battery-powered fluoroscope that produces an instant image through use of a small amount of radioactive isotope. Originally developed by Goddard Space Flight Center, Lixiscope is now being produced by Lixi, Inc. which has an exclusive NASA license for one version of the device.

  8. Portable receiver for radar detection

    DOEpatents

    Lopes, Christopher D.; Kotter, Dale K.

    2008-10-14

    Various embodiments are described relating to a portable antenna-equipped device for multi-band radar detection. The detection device includes a plurality of antennas on a flexible substrate, a detection-and-control circuit, an indicator and a power source. The antenna may include one or more planar lithographic antennas that may be fabricated on a thin-film substrate. Each antenna may be tuned to a different selection frequency or band. The antennas may include a bolometer for radar detection. Each antenna may include a frequency selective surface for tuning to the selection frequency.

  9. 29 CFR 1910.244 - Other portable tools and equipment.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 5 2012-07-01 2012-07-01 false Other portable tools and equipment. 1910.244 Section 1910.244 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other...

  10. 29 CFR 1910.244 - Other portable tools and equipment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 5 2010-07-01 2010-07-01 false Other portable tools and equipment. 1910.244 Section 1910.244 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other...

  11. 29 CFR 1910.244 - Other portable tools and equipment.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 5 2011-07-01 2011-07-01 false Other portable tools and equipment. 1910.244 Section 1910.244 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Hand and Portable Powered Tools and Other...

  12. Inexpensive portable drug detector

    NASA Technical Reports Server (NTRS)

    Dimeff, J.; Heimbuch, A. H.; Parker, J. A.

    1977-01-01

    Inexpensive, easy-to-use, self-scanning, self-calibrating, portable unit automatically graphs fluorescence spectrum of drug sample. Device also measures rate of movement through chromatographic column for forensic and medical testing.

  13. Inexpensive portable drug detector

    NASA Technical Reports Server (NTRS)

    Dimeff, J.; Heimbuch, A. H.; Parker, J. A.

    1977-01-01

    Inexpensive, easy-to-use, self-scanning, self-calibrating, portable unit automatically graphs fluorescence spectrum of drug sample. Device also measures rate of movement through chromatographic column for forensic and medical testing.

  14. Portable Microfiche Readers.

    ERIC Educational Resources Information Center

    Zybura, Edward L.

    1980-01-01

    Provides an introduction to use of three types of portable microfiche readers: hand-held readers, briefcase readers, and self-contained mobile readers. Features described include image quality, method of operation, product history, and optimal environments for utilization. (SW)

  15. Portable treatment systems study

    SciTech Connect

    Sherick, M.J.; Schwinkendorf, W.E.; Bechtold, T.E.; Cole, L.T.

    1997-03-01

    In developing their Site Treatment Plans (STPs), many of the Department of Energy installations identified some form of portable treatment, to facilitate compliant disposition of select mixed low-level wastestreams. The Environmental Management Office of Science and Technology requested that a systems study be performed to better define the potential role of portable treatment with respect to mixed low-level waste, highlight obstacles to implementation, and identify opportunities for future research and development emphasis. The study was performed by first establishing a representative set of mixed waste, then formulating portable treatment system concepts to meet the required processing needs for these wastes. The portable systems that were conceptualized were evaluated and compared to a fixed centralized treatment alternative. The system evaluations include a life-cycle cost analysis and an assessment of regulatory, institutional, and technical issues associated with the potential use of portable systems. The results of this study show that when all costs are included, there are no significant cost differences between portable systems and fixed systems. However, it is also emphasized that many uncertainties exist that could impact the cost of implementing portable treatment systems. Portable treatment could be made more attractive through private sector implementation, although there is little economic incentive for a commercial vendor to develop small, specialized treatment capabilities with limited applicability. Alternatively, there may also be valid reasons why fixed units cannot be used for some problematic wastestreams. In any event, there are some site-specific problems that still need to be addressed, and there may be some opportunity for research and development to make a positive impact in these areas.

  16. A pilot study of a portable hand washing station for recently displaced refugees during an acute emergency in Benishangul-Gumuz Regional State, Ethiopia.

    PubMed

    Husain, Farah; Hardy, Colleen; Zekele, Lemlem; Clatworthy, David; Blanton, Curtis; Handzel, Thomas

    2015-01-01

    Diarrheal disease is a common cause of morbidity and mortality. Displaced populations are especially vulnerable due to overcrowded camps and limited access to water and sanitation facilities, increasing the risk for outbreaks. Hand washing with soap is effective against disease transmission, and studies suggest access to a convenient hand washing station may be the key to increasing hand washing behavior. This pilot study evaluated the acceptability, durability and use of a novel hand washing bag (HWB) at the household level among Sudanese refugees immediately following an acute emergency. We distributed one HWB to every household (n = 874) in Adamazin Transit Center in western Ethiopia. The evaluation consisted of baseline and endline surveys, three monthly monitoring visits and focus group discussions (FGDs) over a six month period. FGD data were analyzed using the Risk, Attitudes, Norms, Abilities, and Self-Regulatory model. Survey and monitoring data were analyzed using SPSS. Note: Residents were resettled to Bambasi Refugee Camp during the study period where the endline survey was conducted. Baseline data suggested water quantity and availability of soap were below SPHERE standards, however participants responded positively to the HWB. At the end of the monitoring period, 73.9 % of the same households retained their original HWBs and 66.7 % of bags had water at the time of the visit. The mean lifespan of the HWB during the monitoring period was 2.73 months. From a new sample of households selected for the endline evaluation, 93.0 % had an original HWB, but only 39.4 % had water in the bag. Endline FGD participants felt the HWB was useful, but reported insufficient soap and hygiene messaging. The HWB performed well during the early phases of the emergency, however longer term results in this setting are unclear. The low levels of reported use measured by proxy indicators at six months indicated decreasing acceptability over time or a reflection of

  17. Are Older Adults Prepared to Ensure Food Safety during Extended Power Outages and Other Emergencies?: Findings from a National Survey

    ERIC Educational Resources Information Center

    Kosa, Katherine M.; Cates, Sheryl C.; Karns, Shawn; Godwin, Sandria L.; Coppings, Richard J.

    2012-01-01

    Natural disasters and other emergencies can cause an increased risk of foodborne illness. We conducted a nationally representative survey to understand consumers' knowledge and use of recommended practices during/after extended power outages and other emergencies. Because older adults are at an increased risk for foodborne illness, this paper…

  18. Are Older Adults Prepared to Ensure Food Safety during Extended Power Outages and Other Emergencies?: Findings from a National Survey

    ERIC Educational Resources Information Center

    Kosa, Katherine M.; Cates, Sheryl C.; Karns, Shawn; Godwin, Sandria L.; Coppings, Richard J.

    2012-01-01

    Natural disasters and other emergencies can cause an increased risk of foodborne illness. We conducted a nationally representative survey to understand consumers' knowledge and use of recommended practices during/after extended power outages and other emergencies. Because older adults are at an increased risk for foodborne illness, this paper…

  19. Analysis of Emergency Diesel Generators Failure Incidents in Nuclear Power Plants

    NASA Astrophysics Data System (ADS)

    Hunt, Ronderio LaDavis

    In early years of operation, emergency diesel generators have had a minimal rate of demand failures. Emergency diesel generators are designed to operate as a backup when the main source of electricity has been disrupted. As of late, EDGs (emergency diesel generators) have been failing at NPPs (nuclear power plants) around the United States causing either station blackouts or loss of onsite and offsite power. These failures occurred from a specific type called demand failures. This thesis evaluated the current problem that raised concern in the nuclear industry which was averaging 1 EDG demand failure/year in 1997 to having an excessive event of 4 EDG demand failure year which occurred in 2011. To determine the next occurrence of the extreme event and possible cause to an event of such happening, two analyses were conducted, the statistical and root cause analysis. Considering the statistical analysis in which an extreme event probability approach was applied to determine the next occurrence year of an excessive event as well as, the probability of that excessive event occurring. Using the root cause analysis in which the potential causes of the excessive event occurred by evaluating, the EDG manufacturers, aging, policy changes/ maintenance practices and failure components. The root cause analysis investigated the correlation between demand failure data and historical data. Final results from the statistical analysis showed expectations of an excessive event occurring in a fixed range of probability and a wider range of probability from the extreme event probability approach. The root-cause analysis of the demand failure data followed historical statistics for the EDG manufacturer, aging and policy changes/ maintenance practices but, indicated a possible cause regarding the excessive event with the failure components. Conclusions showed the next excessive demand failure year, prediction of the probability and the next occurrence year of such failures, with an

  20. Portable sensor for hazardous waste

    SciTech Connect

    Piper, L.G.; Hunter, A.J.R.; Fraser, M.E.; Davis, S.J.

    1996-12-31

    We are part-way through the second phase of a 4-year program designed to develop a portable monitor for sensitive hazardous waste detection. The ultimate goal of the program is to develop our concept to the prototype instrument level. Our monitor will be a compact, portable instrument that will allow real-time, in situ, monitoring of hazardous wastes. This instrument will be able to provide the means for rapid field screening of hazardous waste sites to map the areas of greatest contamination. Remediation efforts can then focus on these areas. Our analysis approach is to excite atomic and molecular fluorescence by the technique of active nitrogen energy transfer (ANET). The active nitrogen is made in a dielectric-barrier (D-B) discharge in nitrogen at atmospheric pressure. Only a few emission lines or bands are excited for each hazardous species, so spectral resolution requirements are greatly simplified over those of other spectroscopic techniques. The D-B discharge is compact, 1 to 2 cm in diameter and 1 to 10 cm long. Furthermore, the discharge power requirements are quite modest, so that the unit can be powered by batteries. Thus an instrument based on ANET can readily be made portable. Our results indicate that ANET is a very sensitive technique for monitoring heavy metals and chlorinated hydrocarbons. We have demonstrated an overall detection sensitivity for most species that is at or below ppb levels. ANET alone, however, appears to be most successful in treating hazardous species that have been atomized. We are therefore developing a hybrid technique which combines a miniature, solid-state laser for sample collection and vaporization with ANET for subsequent detection. This approach requires no special sample preparation, can operate continuously, and lends itself well to compact packaging.

  1. Emergency/disaster medical support in the restoration project for the Fukushima nuclear power plant accident

    PubMed Central

    Morimura, Naoto; Asari, Yasushi; Yamaguchi, Yoshihiro; Asanuma, Kazunari; Tase, Choichiro; Sakamoto, Tetsuya; Aruga, Tohru

    2013-01-01

    The Fukushima Daiichi Nuclear Power Plant (1F) suffered a series of radiation accidents after the Great East Japan Earthquake on 11 March 2011. In a situation where halting or delaying restoration work was thought to translate directly into a very serious risk for the entire country, it was of the utmost importance to strengthen the emergency and disaster medical system in addition to radiation emergency medical care for staff at the frontlines working in an environment that posed a risk of radiation exposure and a large-scale secondary disaster. The Japanese Association for Acute Medicine (JAAM) launched the ‘Emergency Task Force on the Fukushima Nuclear Power Plant Accident’ and sent physicians to the local response headquarters. Thirty-four physicians were dispatched as disaster medical advisors, response guidelines in the event of multitudinous injury victims were created and revised and, along with execution of drills, coordination and advice was given on transport of patients. Forty-nine physicians acted as directing physicians, taking on the tasks of triage, initial treatment and decontamination. A total of 261 patients were attended to by the dispatched physicians. None of the eight patients with external contamination developed acute radiation syndrome. In an environment where the collaboration between organisations in the framework of a vertically bound government and multiple agencies and institutions was certainly not seamless, the participation of the JAAM as the medical academic organisation in the local system presented the opportunity to laterally integrate the physicians affiliated with the respective organisations from the perspective of specialisation. PMID:23184925

  2. A microcontroller-based portable electrocardiograph recorder.

    PubMed

    Segura-Juárez, José J; Cuesta-Frau, David; Samblas-Pena, Luis; Aboy, Mateo

    2004-09-01

    We describe a low cost portable Holter design that can be implemented with off-the-shelf components. The recorder is battery powered and includes a graphical display and keyboard. The recorder is capable of acquiring up to 48 hours of continuous electrocardiogram data at a sample rate of up to 250 Hz.

  3. Portable Linear Sled (PLS) for biomedical research

    NASA Technical Reports Server (NTRS)

    Vallotton, Will; Matsuhiro, Dennis; Wynn, Tom; Temple, John

    1993-01-01

    The PLS is a portable linear motion generating device conceived by researchers at Ames Research Center's Vestibular Research Facility and designed by engineers at Ames for the study of motion sickness in space. It is an extremely smooth apparatus, powered by linear motors and suspended on air bearings which ride on precision ground ceramic ways.

  4. Portable medical status and treatment system

    NASA Technical Reports Server (NTRS)

    1981-01-01

    A portable medical status and treatment system is discussed. The vital signs monitor includes electrocardiogram, respiration, temperature, blood pressure, alarm, and power subsystems, which are described. A DC defibrillator module, a radio module, and their packaging are also described. These subsystems were evaluated and the results and recommendations are presented.

  5. Emergent inequality and self-organized social classes in a network of power and frustration.

    PubMed

    Mahault, Benoit; Saxena, Avadh; Nisoli, Cristiano

    2017-01-01

    We propose a simple agent-based model on a network to conceptualize the allocation of limited wealth among more abundant expectations at the interplay of power, frustration, and initiative. Concepts imported from the statistical physics of frustrated systems in and out of equilibrium allow us to compare subjective measures of frustration and satisfaction to collective measures of fairness in wealth distribution, such as the Lorenz curve and the Gini index. We find that a completely libertarian, law-of-the-jungle setting, where every agent can acquire wealth from or lose wealth to anybody else invariably leads to a complete polarization of the distribution of wealth vs. opportunity. This picture is however dramatically ameliorated when hard constraints are imposed over agents in the form of a limiting network of transactions. There, an out of equilibrium dynamics of the networks, based on a competition between power and frustration in the decision-making of agents, leads to network coevolution. The ratio of power and frustration controls different dynamical regimes separated by kinetic transitions and characterized by drastically different values of equality. It also leads, for proper values of social initiative, to the emergence of three self-organized social classes, lower, middle, and upper class. Their dynamics, which appears mostly controlled by the middle class, drives a cyclical regime of dramatic social changes.

  6. Emergence of flagellar beating from the collective behavior of individual ATP-powered dyneins

    NASA Astrophysics Data System (ADS)

    Namdeo, S.; Onck, P. R.

    2016-10-01

    Flagella are hair-like projections from the surface of eukaryotic cells, and they play an important role in many cellular functions, such as cell-motility. The beating of flagella is enabled by their internal architecture, the axoneme, and is powered by a dense distribution of motor proteins, dyneins. The dyneins deliver the required mechanical work through the hydrolysis of ATP. Although the dynein-ATP cycle, the axoneme microstructure, and the flagellar-beating kinematics are well studied, their integration into a coherent picture of ATP-powered flagellar beating is still lacking. Here we show that a time-delayed negative-work-based switching mechanism is able to convert the individual sliding action of hundreds of dyneins into a regular overall beating pattern leading to propulsion. We developed a computational model based on a minimal representation of the axoneme consisting of two representative doublet microtubules connected by nexin links. The relative sliding of the microtubules is incorporated by modeling two groups of ATP-powered dyneins, each responsible for sliding in opposite directions. A time-delayed switching mechanism is postulated, which is key in converting the local individual sliding action of multiple dyneins into global beating. Our results demonstrate that an overall nonreciprocal beating pattern can emerge with time due to the spatial and temporal coordination of the individual dyneins. These findings provide insights in the fundamental working mechanism of axonemal dyneins and could possibly open new research directions in the field of flagellar motility.

  7. Emergent inequality and self-organized social classes in a network of power and frustration

    PubMed Central

    Mahault, Benoit; Saxena, Avadh

    2017-01-01

    We propose a simple agent-based model on a network to conceptualize the allocation of limited wealth among more abundant expectations at the interplay of power, frustration, and initiative. Concepts imported from the statistical physics of frustrated systems in and out of equilibrium allow us to compare subjective measures of frustration and satisfaction to collective measures of fairness in wealth distribution, such as the Lorenz curve and the Gini index. We find that a completely libertarian, law-of-the-jungle setting, where every agent can acquire wealth from or lose wealth to anybody else invariably leads to a complete polarization of the distribution of wealth vs. opportunity. This picture is however dramatically ameliorated when hard constraints are imposed over agents in the form of a limiting network of transactions. There, an out of equilibrium dynamics of the networks, based on a competition between power and frustration in the decision-making of agents, leads to network coevolution. The ratio of power and frustration controls different dynamical regimes separated by kinetic transitions and characterized by drastically different values of equality. It also leads, for proper values of social initiative, to the emergence of three self-organized social classes, lower, middle, and upper class. Their dynamics, which appears mostly controlled by the middle class, drives a cyclical regime of dramatic social changes. PMID:28212440

  8. More Opportunities than Wealth: Inequality and Emergent Social Classes in a Network of Power and Frustration

    NASA Astrophysics Data System (ADS)

    Nisoli, Cristiano; Mahault, Benoit; Saxena, Avadh

    We introduce a minimal agent-based model to qualitatively conceptualize the allocation of limited wealth among more abundant opportunities. There the interplay of power, satisfaction and frustration determines the distribution, concentration, and inequality of wealth. Our framework allows us to compare subjective measures of frustration and satisfaction to collective measures of fairness in wealth distribution, such as the Lorenz curve and the Gini index. We find that a completely libertarian, law-of-the-jungle setting, where every agent can acquire wealth from, or lose wealth to, anybody else invariably leads to large inequality. The picture is however dramatically modified when hard constraints are imposed over agents, and they are limited to share wealth with neighbors on a network. We address dynamical societies via an out of equilibrium coevolution of the network, driven by a competition between power and frustration. The ratio between power and frustration controls different dynamical regimes separated by kinetic transitions and characterized by drastically different values of the indices of equality. In particular, it leads to the emergence of three self-organized social classes, lower, middle, and upper class, whose interactions drive a cyclical regime.

  9. Emergent inequality and self-organized social classes in a network of power and frustration

    DOE PAGES

    Mahault, Benoit; Saxena, Avadh; Nisoli, Cristiano

    2017-02-17

    We propose a simple agent-based model on a network to conceptualize the allocation of limited wealth among more abundant expectations at the interplay of power, frustration, and initiative. Concepts imported from the statistical physics of frustrated systems in and out of equilibrium allow us to compare subjective measures of frustration and satisfaction to collective measures of fairness in wealth distribution, such as the Lorenz curve and the Gini index. We find that a completely libertarian, law-of-the-jungle setting, where every agent can acquire wealth from or lose wealth to anybody else invariably leads to a complete polarization of the distribution ofmore » wealth vs. opportunity. This picture is however dramatically ameliorated when hard constraints are imposed over agents in the form of a limiting network of transactions. There, an out of equilibrium dynamics of the networks, based on a competition between power and frustration in the decision-making of agents, leads to network coevolution. The ratio of power and frustration controls different dynamical regimes separated by kinetic transitions and characterized by drastically different values of equality. It also leads, for proper values of social initiative, to the emergence of three self-organized social classes, lower, middle, and upper class. Their dynamics, which appears mostly controlled by the middle class, drives a cyclical regime of dramatic social changes.« less

  10. Green Propellant Demonstration with Hydrazine Catalyst of F-16 Emergency Power Unit

    NASA Technical Reports Server (NTRS)

    Robinson, Joel W.; Brechbill, Shawn

    2015-01-01

    Some space vehicle and aircraft Auxiliary Power Units (APUs) use hydrazine propellant for generating power. Hydrazine is a toxic, hazardous fuel which requires special safety equipment and processes for handling and loading. In recent years, there has been development of two green propellants that could enable their use in APU's: the Swedish LMP-103S and the Air Force Research Laboratory (AFRL) AF-M315E. While there has been work on development of these propellants for thruster applications (Prisma and Green Propulsion Infusion Mission, respectively), there has been less focus on the application to power units. Beginning in 2012, an effort was started by the Marshall Space Flight Center (MSFC) on the APU application. The MSFC plan was to demonstrate green propellants with residual Space Shuttle hardware. The principal investigator was able to acquire a Solid Rocket Booster gas generator and an Orbiter APU. Since these test assets were limited in number, an Air Force equivalent asset was identified: the F-16 Emergency Power Unit (EPU). In June 2013, two EPU's were acquired from retired aircraft located at Davis Monthan Air Force Base. A gas generator from one of these EPU's was taken out of an assembly and configured for testing with a version of the USAF propellant with a higher water content (AF-M315EM) to reduce decomposition temperatures. Testing in November 2014 has shown that this green propellant is reactive with the Hydrazine catalyst (Shell 405) generating 300 psi of pressure with the existing F-16 EPU configuration. This paper will highlight the results of MSFC testing in collaboration with AFRL.

  11. Portable biochip scanner device

    DOEpatents

    Perov, Alexander; Sharonov, Alexei; Mirzabekov, Andrei D.

    2002-01-01

    A portable biochip scanner device used to detect and acquire fluorescence signal data from biological microchips (biochips) is provided. The portable biochip scanner device employs a laser for emitting an excitation beam. An optical fiber delivers the laser beam to a portable biochip scanner. A lens collimates the laser beam, the collimated laser beam is deflected by a dichroic mirror and focused by an objective lens onto a biochip. The fluorescence light from the biochip is collected and collimated by the objective lens. The fluorescence light is delivered to a photomultiplier tube (PMT) via an emission filter and a focusing lens. The focusing lens focuses the fluorescence light into a pinhole. A signal output of the PMT is processed and displayed.

  12. Human portable preconcentrator system

    DOEpatents

    Linker, Kevin L.; Brusseau, Charles A.; Hannum, David W.; Puissant, James G.; Varley, Nathan R.

    2003-08-12

    A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon heating, to release those chemicals into the chamber. Chemicals captured and then released in this fashion are then carried to a portable chemical detection device such as a portable ion mobility spectrometer. In the preferred embodiment, the means for drawing sample into the chamber comprises a reversible fan which, when operated in reverse direction, creates a backpressure that facilitates evolution of captured target chemicals into the chamber when the screen is heated. The screen can be positioned directly in front of the detector prior to heating to improve detection capability.

  13. Survey and documentation of emerging technologies for the Satellite Power System (SPS)

    NASA Technical Reports Server (NTRS)

    Glaser, P.; Chapman, P.

    1981-01-01

    The genesis of the solar power satellite (SPS) concept is reviewed historically and the original assumptions and guidelines which led to development of the SPS reference system design concept are discussed. Some guidelines are applicable to almost any SPS design, but others can be changed, leading to new and perhaps preferable systems. In order to stimulate new SPS concepts and to facilitate comparative assessment of emerging SPS technologies, one useful approach is to break the overall system into functional parts. The system functions which must be performed by any SPS concept and the interrelations between them are discussed and a systematic framework is presented for assessing the wide variety of system concepts and subsystem technologies which have been proposed. About 80 alternative SPS technologies are reviewed.

  14. The Emerging Interdependence of the Electric Power Grid & Information and Communication Technology

    SciTech Connect

    Taft, Jeffrey D.; Becker-Dippmann, Angela S.

    2015-08-01

    This paper examines the implications of emerging interdependencies between the electric power grid and Information and Communication Technology (ICT). Over the past two decades, electricity and ICT infrastructure have become increasingly interdependent, driven by a combination of factors including advances in sensor, network and software technologies and progress in their deployment, the need to provide increasing levels of wide-area situational awareness regarding grid conditions, and the promise of enhanced operational efficiencies. Grid operators’ ability to utilize new and closer-to-real-time data generated by sensors throughout the system is providing early returns, particularly with respect to management of the transmission system for purposes of reliability, coordination, congestion management, and integration of variable electricity resources such as wind generation.

  15. Emerging spectra of singular correlation matrices under small power-map deformations

    NASA Astrophysics Data System (ADS)

    Vinayak; Schäfer, Rudi; Seligman, Thomas H.

    2013-09-01

    Correlation matrices are a standard tool in the analysis of the time evolution of complex systems in general and financial markets in particular. Yet most analysis assume stationarity of the underlying time series. This tends to be an assumption of varying and often dubious validity. The validity of the assumption improves as shorter time series are used. If many time series are used, this implies an analysis of highly singular correlation matrices. We attack this problem by using the so-called power map, which was introduced to reduce noise. Its nonlinearity breaks the degeneracy of the zero eigenvalues and we analyze the sensitivity of the so-emerging spectra to correlations. This sensitivity will be demonstrated for uncorrelated and correlated Wishart ensembles.

  16. Issues in Energy Economics Led by Emerging Linkages between the Natural Gas and Power Sectors

    SciTech Connect

    Platt, Jeremy B.

    2007-09-15

    Fuel prices in 2006 continued at record levels, with uranium continuing upward unabated and coal, SO{sub 2} emission allowances, and natural gas all softening. This softening did not continue for natural gas, however, whose prices rose, fell and rose again, first following weather influences and, by the second quarter of 2007, continuing at high levels without any support from fundamentals. This article reviews these trends and describes the remarkable increases in fuel expenses for power generation. By the end of 2005, natural gas claimed 55% of annual power sector fuel expenses, even though it was used for only 19% of electric generation. Although natural gas is enormously important to the power sector, the sector also is an important driver of the natural gas market-growing to over 28% of the market even as total use has declined. The article proceeds to discuss globalization, natural gas price risk, and technology developments. Forces of globalization are poised to affect the energy markets in new ways-new in not being only about oil. Of particular interest in the growth of intermodal traffic and its a little-understood impacts on rail traffic patterns and transportation costs, and expected rapidly expanding LNG imports toward the end of the decade. Two aspects of natural gas price risk are discussed: how understanding the use of gas in the power sector helps define price ceilings and floors for natural gas, and how the recent increase in the natural gas production after years of record drilling could alter the supply-demand balance for the better. The article cautions, however, that escalation in natural gas finding and development costs is countering the more positive developments that emerged during 2006. Regarding technology, the exploitation of unconventional natural gas was one highlight. So too was the queuing up of coal-fired power plants for the post-2010 period, a phenomenon that has come under great pressure with many consequences including increased

  17. Hospital emergency department visits for carbon monoxide poisoning following an October 2006 snowstorm in western New York.

    PubMed

    Muscatiello, Neil A; Babcock, Gwen; Jones, Rena; Horn, Edward; Hwang, Syni-An

    2010-01-01

    Following an October 2006 snowstorm that caused widespread power outages in western New York State, hospital emergency department (ED) visits for carbon monoxide (CO) poisoning increased. Overall, 264 people representing 155 households were diagnosed with CO poisoning during the power outages. Telephone interviews were conducted with a subset of these individuals. Respondents provided information about exposure sources, CO alarms, and awareness of CO warnings. In many households, portable generators were operated in an enclosed area. Awareness of CO warnings may have contributed to knowledge about locating portable generators outside. When operated outside, however, portable generators were generally located too close to the home. Gas kitchen ranges were used for heat by numerous households. In the short term, CO education and improved clarity of CO warning information is important for increasing awareness about power outage-related CO risks. Improvements in the combustion efficiency of portable generators should be a long-term goal.

  18. Survey and documentation of emerging technologies for the satellite power system (SPS)

    SciTech Connect

    Glaser, P.; Chapman, P.

    1981-04-01

    The purpose of this study is to survey emerging technologies and new concepts which may offer advantages over those selected for the SPS Reference System. A brief historical overview of the genesis of the Solar Power Satellite (SPS) concept is presented leading to a discussion of the assumptions and guidelines which were originally established and which led to development of the SPS Reference System design concept. Some of these guidelines are applicable to almost any SPS design, but others could be changed, leading to new and perhaps preferable systems. Moreover, while some of the guidelines are based on solid data, some are little more than arbitrary assumptions which were adopted only to proceed with a concrete point design which then could be assessed in the DOE/NASA Concept Development and Evaluation Program. In order to stimulate new SPS concepts and to facilitate comparative assessment of emerging SPS technologies, one useful approach is to break the overall system into functional parts. The system functions which must be performed by any SPS concept and the interrelations between them are discussed and a systematic framework is presented for assessment of the wide variety of system concepts and subsystem technologies which have been proposed. About 80 alternative SPS technologies are reviewed.

  19. [Portable peristaltic perfusion pumps].

    PubMed

    Magallón Pedrera, I; Soto Torres, I

    1999-11-01

    Portable peristaltic perfusion pumps allow one to administer pharmaceuticals in hospitals as well as in primary health care centers and furthermore these pumps present multiple advantages for patients and their families since they make it possible to carry out treatment in a patient's home while at the same time lowering the costs involved. The authors analyze the most out standing aspects of portable peristaltic perfusion pumps along with their characteristics, installation, programming, and how to turn them on; in addition, the authors list the maintenance care which these pumps require.

  20. Overview and Evaluation of Bluetooth Low Energy: An Emerging Low-Power Wireless Technology

    PubMed Central

    Gomez, Carles; Oller, Joaquim; Paradells, Josep

    2012-01-01

    Bluetooth Low Energy (BLE) is an emerging low-power wireless technology developed for short-range control and monitoring applications that is expected to be incorporated into billions of devices in the next few years. This paper describes the main features of BLE, explores its potential applications, and investigates the impact of various critical parameters on its performance. BLE represents a trade-off between energy consumption, latency, piconet size, and throughput that mainly depends on parameters such as connInterval and connSlaveLatency. According to theoretical results, the lifetime of a BLE device powered by a coin cell battery ranges between 2.0 days and 14.1 years. The number of simultaneous slaves per master ranges between 2 and 5,917. The minimum latency for a master to obtain a sensor reading is 676 μs, although simulation results show that, under high bit error rate, average latency increases by up to three orders of magnitude. The paper provides experimental results that complement the theoretical and simulation findings, and indicates implementation constraints that may reduce BLE performance.

  1. The emerging roles of energy storage in a competitive power market: Summary of a DOE Workshop

    SciTech Connect

    Gordon, S.P.; Falcone, P.K.

    1995-06-01

    This report contains a summary of the workshop, {open_quotes}The Emerging Roles of Energy Storage in a Competitive Power Market,{close_quotes} which was sponsored by the U.S. Department of Energy and Sandia National Laboratories and was held in Pleasanton, California on December 6-7, 1994. More than 70 people attended, representing government agencies, national laboratories, equipment vendors, electric utilities and other energy providers, venture capital interests, and consultants. Many types of energy storage were discussed, including electrical (batteries and superconducting magnets), mechanical (flywheels and pumped hydro), hydrogen, compressed air, and thermal energy storage. The objectives of the workshop were to communicate within the energy storage community regarding the costs, benefits, and technical status of various technology options; to explore and elucidate the evolving roles of energy storage in a more dynamic and competitive power and energy marketplace; and to discuss the optimum federal role in this area. The goals of the workshop were fully realized through knowledgeable and insightful presentations and vigorous discussion, which are summarized.

  2. Applications of nuclear magnetic resonance in lipid analyses: An emerging powerful tool for lipidomics studies.

    PubMed

    Li, Jingbo; Vosegaard, Thomas; Guo, Zheng

    2017-09-11

    The role of lipids in cell, tissue, and organ physiology is crucial; as many diseases, including cancer, diabetes, neurodegenerative, and infectious diseases, are closely related to absorption and metabolism of lipids. Mass spectrometry (MS) based methods are the most developed powerful tools to study the synthetic pathways and metabolic networks of cellular lipids in biological systems; leading to the birth of an emerging subject lipidomics, which has been extensively reviewed. Nuclear magnetic resonance (NMR), another powerful analytical tool, which allows the visualization of single atoms and molecules, is receiving increasing attention in lipidomics analyses. However, very little work focusing on lipidomic studies using NMR has been critically reviewed. This paper presents a first comprehensive summary of application of (1)H, (13)C &(31)P NMR in lipids and lipidomics analyses. The scientific basis, principles and characteristic diagnostic peaks assigned to specific atoms/molecular structures of lipids are presented. Applications of 2D NMR in mapping and monitoring of the components and their changes in complex lipids systems, as well as alteration of lipid profiling over disease development are also reviewed. The applications of NMR lipidomics in diseases diagnosis and food adulteration are exemplified. Copyright © 2017 Elsevier Ltd. All rights reserved.

  3. Default operational intervention levels (OILs) for severe nuclear power plant or spent fuel pool emergencies.

    PubMed

    McKenna, T; Kutkov, V; Vilar Welter, P; Dodd, B; Buglova, E

    2013-05-01

    Experience and studies show that for an emergency at a nuclear power plant involving severe core damage or damage to the fuel in spent fuel pools, the following actions may need to be taken in order to prevent severe deterministic health effects and reduce stochastic health effects: (1) precautionary protective actions and other response actions for those near the facility (i.e., within the zones identified by the International Atomic Energy Agency) taken immediately upon detection of facility conditions indicating possible severe damage to the fuel in the core or in the spent fuel pool; and (2) protective actions and other response actions taken based on environmental monitoring and sampling results following a release. This paper addresses the second item by providing default operational intervention levels [OILs, which are similar to the U.S. derived response levels (DRLs)] for promptly assessing radioactive material deposition, as well as skin, food, milk and drinking water contamination, following a major release of fission products from the core or spent fuel pool of a light water reactor (LWR) or a high power channel reactor (RBMK), based on the International Atomic Energy Agency's guidance.

  4. Fixed Facts about Portable Classrooms.

    ERIC Educational Resources Information Center

    Sturgeon, Julie

    1998-01-01

    Discusses the easing of overcrowded schools through the use of portable classrooms and provides an example from Elk Grove Unified School District (California) which has opened entire elementary schools using only portables. Fifteen tips for installing relocatables are highlighted. (GR)

  5. Fixed Facts about Portable Classrooms.

    ERIC Educational Resources Information Center

    Sturgeon, Julie

    1998-01-01

    Discusses the easing of overcrowded schools through the use of portable classrooms and provides an example from Elk Grove Unified School District (California) which has opened entire elementary schools using only portables. Fifteen tips for installing relocatables are highlighted. (GR)

  6. Portable electronic endoscopic imaging system

    NASA Astrophysics Data System (ADS)

    Du, Lihui; Wang, Liqiang; Ye, Bin; Duan, Huilong

    2010-11-01

    The paper presents a low-power, inexpensive and portable endoscopic imaging system. A 1.3 million pixels CMOS sensor is considered as an image capture. The sensor and the lens system are designed to minify the cannula diameter of the endoscope and therefore minimize the incision size for insertion. LVDS is used for image data transmission between the sensor and CPU to realize a long distance, high speed and low noise system. An ARM 920T based microcontroller is employed as the control core for the image transmission module, display module and other modules. The camera interface and LCD controller are integrated in the microcontroller and both have a dedicated DMA supports to transmit image data though AHB to or from frame buffer located in system memory without CPU intervention. The image is displayed on an 8 inch LCD screen with 800 × 600 resolution and 16 bits of color depth. With the maximum capture and display rate of 15 fps, this system can provide a clear image enough for laparoscopy or industrial application. And with integrated camera, light source and video display function, it can also be used as a portable, miniature and inexpensive endoscope.

  7. Portable Aerosol Contaminant Extractor

    DOEpatents

    Carlson, Duane C.; DeGange, John J.; Cable-Dunlap, Paula

    2005-11-15

    A compact, portable, aerosol contaminant extractor having ionization and collection sections through which ambient air may be drawn at a nominal rate so that aerosol particles ionized in the ionization section may be collected on charged plate in the collection section, the charged plate being readily removed for analyses of the particles collected thereon.

  8. Portable Lifting Seat

    NASA Technical Reports Server (NTRS)

    Weddendorf, Bruce

    1993-01-01

    Portable lifting machine assists user in rising from seated position to standing position, or in sitting down. Small and light enough to be carried like briefcase. Used on variety of chairs and benches. Upholstered aluminum box houses mechanism of lifting seat. Springs on outer shaft-and-arm subassembly counterbalance part of user's weight to assist motor.

  9. Portable dynamic fundus instrument

    NASA Technical Reports Server (NTRS)

    Taylor, Gerald R. (Inventor); Meehan, Richard T. (Inventor); Hunter, Norwood R. (Inventor); Caputo, Michael P. (Inventor); Gibson, C. Robert (Inventor)

    1992-01-01

    A portable diagnostic image analysis instrument is disclosed for retinal funduscopy in which an eye fundus image is optically processed by a lens system to a charge coupled device (CCD) which produces recordable and viewable output data and is simultaneously viewable on an electronic view finder. The fundus image is processed to develop a representation of the vessel or vessels from the output data.

  10. Portable Suction Lysimeter

    DOEpatents

    Hubbell, Joel M.; Sisson, James B.

    2004-07-13

    A portable lysimeter including a collection vessel having an inflatable bladder and a semi-permeable member assembly at least partially movable in response to inflation of the bladder, a sample conduit in fluid communication with the semi-permeable member and a reservoir in fluid communication with the sample conduit.

  11. Portable COHB Analyzer.

    DTIC Science & Technology

    A portable spectrophotometric apparatus and method therefore for measuring the percentage of carboxyhemoglobin ( COHb ) in blood. The apparatus...comprises a spectrophotometer and wavelength selection filters for testing a reference sample having a hemolizing agent and sodium hyposulfite and a treated...blood sample with the hemolizing agent and sodium hyposulfite and providing a two component COHb -Hb system for determining relative absorbance values

  12. Portable Weld Tester.

    ERIC Educational Resources Information Center

    Eckert, Douglas

    This training manual, which was developed for employees of an automotive plant, is designed to teach trainees to operate a portable weld tester (Miyachi MM-315). In chapter 1, the weld tester's components are illustrated and described, and the procedure for charging its batteries is explained. Chapter 2 illustrates the weld tester's parts,…

  13. Portable Weld Tester.

    ERIC Educational Resources Information Center

    Eckert, Douglas

    This training manual, which was developed for employees of an automotive plant, is designed to teach trainees to operate a portable weld tester (Miyachi MM-315). In chapter 1, the weld tester's components are illustrated and described, and the procedure for charging its batteries is explained. Chapter 2 illustrates the weld tester's parts,…

  14. Portable Lifting Seat

    NASA Technical Reports Server (NTRS)

    Weddendorf, Bruce

    1993-01-01

    Portable lifting machine assists user in rising from seated position to standing position, or in sitting down. Small and light enough to be carried like briefcase. Used on variety of chairs and benches. Upholstered aluminum box houses mechanism of lifting seat. Springs on outer shaft-and-arm subassembly counterbalance part of user's weight to assist motor.

  15. PORTABLE SOURCE OF RADIOACTIVITY

    DOEpatents

    Goertz, R.C.; Ferguson, K.R.; Rylander, E.W.; Safranski, L.M.

    1959-06-16

    A portable source for radiogiaphy or radiotherapy is described. It consists of a Tl/sup 170/ or Co/sup 60/ source mounted in a rotatable tungsten alloy plug. The plug rotates within a brass body to positions of safety or exposure. Provision is made for reloading and carrying the device safely. (T.R.H.)

  16. Portable oven air circulator

    DOEpatents

    Jorgensen, Jorgen A.; Nygren, Donald W.

    1983-01-01

    A portable air circulating apparatus for use in cooking ovens which is used to create air currents in the oven which transfer heat to cooking foodstuffs to promote more rapid and more uniform cooking or baking, the apparatus including a motor, fan blade and housing of metallic materials selected from a class of heat resistant materials.

  17. Portable exothermal energy source for disaster relief operations

    NASA Astrophysics Data System (ADS)

    Zimbeck, Walter R.

    1994-03-01

    This manuscript describes an example of transfer technology from a U.S. Government Laboratory to commercial products that meet national needs in the public safety and health care sectors. Funded by the U.S. Army, the first project is the development of a portable, non-powered food warming device for serving meals to soldiers in the field. The second project is being funded by the National Institutes of Health for development of a heat therapy device for relief from rheumatoid arthritis discomfort in the hands and other affected joints. Both of these heating devices are portable, reusable heat pack products that can be regenerated in a microwave oven or in boiling water. The knowledge developed during these two projects will be applied to many other related products. Applications in support of natural and manmade disaster relief include food warming heat packs for food service to victims and rescue workers in sustained black-out conditions, and heat pack warming blankets for emergency medical situations in which patients are in traumatic shock and the onset of hypothermia is imminent.

  18. Implementation of IP Telemetry in Support of Portable Deployments for Earthquake Response

    NASA Astrophysics Data System (ADS)

    Edwards, N.; Torrisi, J.; Austin, W.; Smith, K. D.; Biasi, G.; Anooshehpoor, R.; Slater, D.

    2008-12-01

    IP spread spectrum radios have revolutionized the operation of remote seismic networks. In two separate deployments this year, the Nevada Seismological Laboratory implemented 900 MHz point-to-multipoint IP radio systems for portable seismographs in response to two important Nevada earthquake sequences: the Mw 6.0 event that struck Wells on February 21, 2008; and an energetic earthquake swarm in urban Reno that began in mid-February (mainshock Mw 5.0, April 26, 2008, 06:40 UTC). In cooperation with the USGS, ten portable stations were deployed in the Wells area response. Also, 10 IRIS RAMP instruments were included in the urban Reno deployment. These instruments were outfitted with Motorola Canopy radios and integrated with the regional telemetry infrastructure. As configured, these radios will support a large deployment, high sample rate dataloggers, and a flexible network topology with a working range of at least 30 miles. Real time IP telemetry can improve portable network performance in the following areas: 1. Simplified data flow- Real-time data from portable deployments is integrated with the regional and national networks. Portable instrument data does not have to be retrieved from the field, extracted from mass storage, and separately incorporated into data archives. The need to reanalyze events as locally-recorded portable data becomes available is eliminated. 2. Improved real-time products- Real-time data from portable stations can be used to improve the precision and timeliness of data products (e.g., ShakeMap) for the public, the local and national media, and emergency managers. 3. State-of-health monitoring- Systems (power, memory, etc.) can be monitored, allowing for less frequent and better targeted maintenance visits. The monitoring of these parameters can then be assumed by software packages such as Nagios or SeisNetWatch. 4. Remote management- Datalogger parameters can be managed remotely. The radios can also be remotely managed, allowing for

  19. Performance Portability for Unstructured Mesh Physics

    SciTech Connect

    Keasler, J A

    2012-03-23

    ASC legacy software must be ported to emerging hardware architectures. This paper notes that many programming models used by DOE applications are similar, and suggests that constructing a common terminology across these models could reveal a performance portable programming model. The paper then highlights how the LULESH mini-app is used to explore new programming models with outside solution providers. Finally, we suggest better tools to identify parallelism in software, and give suggestions for enhancing the co-design process with vendors.

  20. Portable vapor diffusion coefficient meter

    DOEpatents

    Ho, Clifford K.

    2007-06-12

    An apparatus for measuring the effective vapor diffusion coefficient of a test vapor diffusing through a sample of porous media contained within a test chamber. A chemical sensor measures the time-varying concentration of vapor that has diffused a known distance through the porous media. A data processor contained within the apparatus compares the measured sensor data with analytical predictions of the response curve based on the transient diffusion equation using Fick's Law, iterating on the choice of an effective vapor diffusion coefficient until the difference between the predicted and measured curves is minimized. Optionally, a purge fluid can forced through the porous media, permitting the apparatus to also measure a gas-phase permeability. The apparatus can be made lightweight, self-powered, and portable for use in the field.

  1. NARAC Modeling During the Response to the Fukushima Dai-ichi Nuclear Power Plant Emergency

    SciTech Connect

    Sugiyama, G; Nasstrom, J S; Probanz, B; Foster, K T; Simpson, M; Vogt, P; Aluzzi, F; Dillon, M; Homann, S

    2012-02-14

    This paper summarizes the activities of the National Atmospheric Release Advisory Center (NARAC) during the Fukushima Dai-ichi nuclear power plant crisis. NARAC provided a wide range of products and analyses as part of its support including: (1) Daily Japanese weather forecasts and hypothetical release (generic source term) dispersion predictions to provide situational awareness and inform planning for U.S. measurement data collection and field operations; (2) Estimates of potential dose in Japan for hypothetical scenarios developed by the Nuclear Regulatory Commission (NRC) to inform federal government considerations of possible actions that might be needed to protect U.S. citizens in Japan; (3) Estimates of possible plume arrival times and dose for U.S. locations; and (4) Plume model refinement and source estimation based on meteorological analyses and available field data. The Department of Energy/National Nuclear Security Administration (DOE/NNSA) deployed personnel to Japan and stood up 'home team' assets across the DOE complex to aid in assessing the consequences of the releases from the Fukushima Dai-ichi Nuclear Power Plant. The DOE Nuclear Incident Team (NIT) coordinated response activities, while DOE personnel provided predictive modeling, air and ground monitoring, sample collection, laboratory analysis, and data assessment and interpretation. DOE deployed the Aerial Measuring System (AMS), Radiological Assistance Program (RAP) personnel, and the Consequence Management Response Team (CMRT) to Japan. DOE/NNSA home team assets included the Consequence Management Home Team (CMHT); National Atmospheric Release Advisory Center (NARAC); Radiation Emergency Assistance Center/Training Site (REAC/TS); and Radiological Triage. NARAC was activated by the DOE/NNSA on March 11, shortly after the Tohoku earthquake and tsunami occurred. The center remained on active operations through late May when DOE ended its deployment to Japan. Over 32 NARAC staff members

  2. Emergence of power-law scalings in shock-driven mixing transition

    NASA Astrophysics Data System (ADS)

    Vorobieff, Peter; Wayne, Patrick; Olmstead, Dell; Simons, Dylan; Truman, C. Randall; Kumar, Sanjay

    2016-11-01

    We present an experimental study of transition to turbulence due to shock-driven instability evolving on an initially cylindrical, diffuse density interface between air and a mixture of sulfur hexafluoride (SF6) and acetone. The plane of the shock is at an initial angle θ with the axis of the heavy-gas cylinder. We present the cases of planar normal (θ = 0) and oblique (θ =20°) shock interaction with the initial conditions. Flow is visualized in two perpendicular planes with planar laser-induced fluorescence (PLIF) triggered in acetone with a pulsed ultraviolet laser. Statistics of the flow are characterized in terms of the second-order structure function of the PLIF intensity. As instabilities in the flow evolve, the structure functions begin to develop power-law scalings, at late times manifesting over a range of scales spanning more than two orders of magnitude. We discuss the effects of the initial conditions on the emergence of these scalings, comparing the fully three-dimensional case (oblique shock interaction) with the quasi-two-dimensional case (planar normal shock interaction). We also discuss the flow anisotropy apparent in statistical differences in data from the two visualization planes. This work is funded by NNSA Grant DE-NA0002913.

  3. Portable neon purification system

    SciTech Connect

    Richardson, R.A.; Schmitt, R.L.

    1995-08-01

    This paper describes the principle design features of a portable neon purification system and the results of the system performance testing. Neon gas replaces air in the Ring Imaging Cherenkov detector without using vacuum, in experiment E781(SELEX) at Fermilab. The portable neon purification system purifies neon gas by, first purging air with CO{sub 2}, freezing the CO{sub 2}, then cryoadsorbing the remaining contaminants. The freezer removes carbon dioxide from a neon gas mixture down to a maximum concentration of 500 parts-per-million (ppm). The charcoal bed adsorber removes nitrogen from neon gas down to a maximum concentration of 100 ppm. The original RICH vessel was designed to hold vacuum but its photomultiplier tube plates were not.

  4. Portable outgas detection apparatus

    DOEpatents

    Haney, Steven Julian; Malinowski, Michael E.

    2004-05-11

    A portable device for detecting surface outgas contaminants of an article includes: (i) a portable housing that has a chamber which is in communication with a port that is adapted to be sealably attached to a surface of the article; (ii) a mass spectrometer that is coupled to the chamber for analyzing gaseous materials in the chamber; and (iii) means for generating a vacuum within the chamber thereby drawing outgas contaminants from the surface of the article into the chamber for analysis by the mass spectrometer. By performing a mass spectrometric analysis of the surface of interest and comparing the data with mass spectrometric data ascertained with the device from a clean surface, the type and amount of outgas contaminants, if any, can be determined.

  5. 46 CFR 108.141 - Boundary bulkheads and decks between the emergency power source and service generators.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... source and service generators. 108.141 Section 108.141 Shipping COAST GUARD, DEPARTMENT OF HOMELAND... service generators. Each boundary bulkhead and deck of a space containing an emergency electric power... service generator, the components of a ship's service generator, or a classified space must be an A-60...

  6. 46 CFR 108.141 - Boundary bulkheads and decks between the emergency power source and service generators.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... source and service generators. 108.141 Section 108.141 Shipping COAST GUARD, DEPARTMENT OF HOMELAND... service generators. Each boundary bulkhead and deck of a space containing an emergency electric power... service generator, the components of a ship's service generator, or a classified space must be an A-60...

  7. 46 CFR 108.141 - Boundary bulkheads and decks between the emergency power source and service generators.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... source and service generators. 108.141 Section 108.141 Shipping COAST GUARD, DEPARTMENT OF HOMELAND... service generators. Each boundary bulkhead and deck of a space containing an emergency electric power... service generator, the components of a ship's service generator, or a classified space must be an A-60...

  8. 46 CFR 108.141 - Boundary bulkheads and decks between the emergency power source and service generators.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... source and service generators. 108.141 Section 108.141 Shipping COAST GUARD, DEPARTMENT OF HOMELAND... service generators. Each boundary bulkhead and deck of a space containing an emergency electric power... service generator, the components of a ship's service generator, or a classified space must be an A-60...

  9. 46 CFR 108.141 - Boundary bulkheads and decks between the emergency power source and service generators.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... source and service generators. 108.141 Section 108.141 Shipping COAST GUARD, DEPARTMENT OF HOMELAND... service generators. Each boundary bulkhead and deck of a space containing an emergency electric power... service generator, the components of a ship's service generator, or a classified space must be an A-60...

  10. Portable Laser Laboratory

    SciTech Connect

    Weir, J.T.

    1994-07-01

    A Portable Laser Laboratory (PLL) is being designed and built for the CALIOPE Program tests which will begin in October of 1994. The PLL is designed to give maximum flexibility for evolving laser experiments and can be readily moved by loading it onto a standard truck trailer. The internal configuration for the October experiments will support a two line DIAL system running in the mid-IR. Brief descriptions of the laser and detection systems are included.

  11. Portable Spray Booth

    NASA Technical Reports Server (NTRS)

    Hansen, Timothy D.; Bardwell, Micheal J.

    1996-01-01

    Portable spray booth provides for controlled application of coating materials with high solvent contents. Includes contoured shroud and carbon filter bed limiting concentration of fumes in vicinity. Designed to substitute spraying for brush application of solvent-based adhesive prior to installing rubber waterproof seals over joints between segments of solid-fuel rocket motor. With minor adjustments and modifications, used to apply other solvent-based adhesives, paints, and like.

  12. Portable Spray Booth

    NASA Technical Reports Server (NTRS)

    Hansen, Timothy D.; Bardwell, Micheal J.

    1996-01-01

    Portable spray booth provides for controlled application of coating materials with high solvent contents. Includes contoured shroud and carbon filter bed limiting concentration of fumes in vicinity. Designed to substitute spraying for brush application of solvent-based adhesive prior to installing rubber waterproof seals over joints between segments of solid-fuel rocket motor. With minor adjustments and modifications, used to apply other solvent-based adhesives, paints, and like.

  13. Portable laser laboratory

    NASA Astrophysics Data System (ADS)

    Weir, J. T.

    1994-07-01

    A Portable Laser Laboratory (PLL) is being designed and built for the CALIOPE Program tests which will begin in October of 1994. The PLL is designed to give maximum flexibility for evolving laser experiments and can be readily moved by loading it onto a standard truck trailer. The internal configuration for the October experiments will support a two line DIAL system running in the mid-IR. Brief descriptions of the laser and detection systems are included.

  14. Portable cutting apparatus

    DOEpatents

    Gilmore, R.F.

    1984-07-17

    A remotely operable, portable cutting apparatus detachably secured to the workpiece by laterally spaced clamp assemblies engagable with the workpiece on opposite sides of the intended line of cut. A reciprocal cutter head is mounted between the clamp assemblies and is provided with a traveling abrasive cutting wire adapted to sever the workpiece normal to the longitudinal axis thereof. Dust and debris are withdrawn from the cutting area by a vacuum force through a nozzle mounted on the cutting head.

  15. Portable cutting apparatus

    DOEpatents

    Gilmore, Richard F.

    1986-01-01

    A remotely operable, portable cutting apparatus detachably secured to the workpiece by laterally spaced clamp assemblies engageable with the workpiece on opposite sides of the intended line of cut. A reciprocal cutter head is mounted between the clamp assemblies and is provided with a traveling abrasive cutting wire adapted to sever the workpiece normal to the longitudinal axis thereof. Dust and debris are withdrawn from the cutting area by a vacuum force through a nozzle mounted on the cutting head.

  16. Portable cutting apparatus

    DOEpatents

    Gilmore, Richard F.

    1986-04-01

    A remotely operable, portable cutting apparatus detachably secured to the workpiece by laterally spaced clamp assemblies engageable with the workpiece on opposite sides of the intended line of cut. A reciprocal cutter head is mounted between the clamp assemblies and is provided with a traveling abrasive cutting wire adapted to sever the workpiece normal to the longitudinal axis thereof. Dust and debris are withdrawn from the cutting area by a vacuum force through a nozzle mounted on the cutting head.

  17. Portable Planetariums Teach Science

    NASA Technical Reports Server (NTRS)

    2015-01-01

    With the Internet proving to be the wave of the future, in the 1990s Johnson Space Center awarded grants to Rice University in Houston for developing the world's first Internet-accessible museum kiosk. Further grants were awarded to the school for creating educational software for use in homes and schools, leading to the creation of Museums Teaching Planet Earth Inc. The company has gone on to develop and sell portable planetariums and accompanying educational shows.

  18. Portable fast-neutron spectrometer project

    SciTech Connect

    Thorngate, J.H.

    1989-12-01

    The Special Projects Division of the Hazards Control Department of Lawrence Livermore National Laboratory has a continuing project to develop neutron spectrometers for radiation-protection measurements. For the last three years we have received limited support from the DOE Personnel Neutron Dosimeter Evaluation and Upgrade Program through Battelle Pacific Northwest Laboratories to build a portable fast-neutron spectrometer. This unit will cover the energy range from 0.5 to 16 MeV by using an organic liquid scintillator to detect the recoil proton produced by the neutrons. Our goal is to make the system compact, computer operated, and battery powered. During the previous two years we developed a pulse-shape discriminator suitable for portable powered. This year we designed a stable light pulser to control the gain of the system, a housing for the detector, and the circuit needed to bias the dynodes of the photomultiplier that detects the light produced by the scintillator. 14 refs., 4 figs.

  19. Relationship between Emergency Restoration Time of Power Distribution Line after a Disaster and Geographical Characteristics of its Area

    NASA Astrophysics Data System (ADS)

    Sagai, Shigeo; Terano, Takao

    The effect of an outage caused by a disaster is serious to the society, because the power distribution line is a common basic infrastructure for life support. And the time estimation of emergency restoration process of power distribution line after a disaster is an emerging problem for the safety and security of the society. But the time estimation is a difficult problem and the only practical method in use is a simple approximation method, which doesn't take account of geographical characteristics of the objective area. So, we developed a method which can take account of the influences caused by the geographical characteristics of the objective area on the estimation of the emergency restoration. In this article, we describe an experimental analysis by the method.

  20. Atmospheric release advisory capability pilot project at two nuclear power plants and associated state offices of emergency preparedness. Final report

    SciTech Connect

    Rosen, L.C.

    1983-01-01

    A project to demonstrate the feasibility of utilizing Atmospheric Release Advisory Capability (ARAC) limited service with commercial nuclear power plants and their associated state offices of emergency preparedness is discussed. Preliminary planning, installation and testing of the ARAC site facilities at Indian Point Nucler Power Station, New York State; at New York State Office of Emergency Preparedness, Albany, New York; at Rancho Seco Nuclear Generating Station, California; and at the State of California Office of Emergency Services, Sacramento, California, are summarized. ARAC participation in the Robert E. Ginna nuclear generating plant accident in New York on January 25, 1982, is discussed. The ARAC system is evaluated with emphasis on communications, the suite of models contained within the ARAC system, and the staff. The implications of this project in designing the next-generation ARAC system to service federal and state needs are assessed.

  1. Electric power emergency management mechanism considering the access of new energy and renewable energy

    NASA Astrophysics Data System (ADS)

    Zhang, Baoqun; Ma, Longfei; Gong, Cheng; Jiao, Ran; Shi, Rui; Chi, Zhongjun; Ding, Yifeng

    2017-01-01

    Scholars at home and abroad have had a thorough research about the theory system and the frame of emergency management on the background of traditional grid, but for the improvement of the emergency mechanism when new energy and renewable energy access the grid, more work should be done. This paper will summarize the predecessors' work on emergency management, discuss the impact of emergency management while new energy and renewable energy access the grid and some suggestions are given.

  2. Verification of voltage/frequency requirement for emergency diesel generator in nuclear power plant using dynamic modeling

    SciTech Connect

    Hur, Jin-Suk; Roh, Myung- Sub

    2014-02-12

    One major cause of the plant shutdown is the loss of electrical power. The study is to comprehend the coping action against station blackout including emergency diesel generator, sequential loading of safety system and to ensure that the emergency diesel generator should meet requirements, especially voltage and frequency criteria using modeling tool. This paper also considered the change of the sequencing time and load capacity only for finding electrical design margin. However, the revision of load list must be verified with safety analysis. From this study, it is discovered that new load calculation is a key factor in EDG localization and in-house capability increase.

  3. Portable wastewater flow meter

    DOEpatents

    Hunter, Robert M.

    1999-02-02

    A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

  4. Portable wastewater flow meter

    DOEpatents

    Hunter, Robert M.

    1990-01-01

    A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under full pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

  5. Portable data collection device

    DOEpatents

    French, P.D.

    1996-06-11

    The present invention provides a portable data collection device that has a variety of sensors that are interchangeable with a variety of input ports in the device. The various sensors include a data identification feature that provides information to the device regarding the type of physical data produced by each sensor and therefore the type of sensor itself. The data identification feature enables the device to locate the input port where the sensor is connected and self adjust when a sensor is removed or replaced. The device is able to collect physical data, whether or not a function of a time. 7 figs.

  6. Portable wastewater flow meter

    SciTech Connect

    Hunter, Robert M.

    1999-02-02

    A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

  7. Portable data collection device

    DOEpatents

    French, Patrick D.

    1996-01-01

    The present invention provides a portable data collection device that has a variety of sensors that are interchangeable with a variety of input ports in the device. The various sensors include a data identification feature that provides information to the device regarding the type of physical data produced by each sensor and therefore the type of sensor itself. The data identification feature enables the device to locate the input port where the sensor is connected and self adjust when a sensor is removed or replaced. The device is able to collect physical data, whether or not a function of a time.

  8. Portable pathogen detection system

    DOEpatents

    Colston, Billy W.; Everett, Matthew; Milanovich, Fred P.; Brown, Steve B.; Vendateswaran, Kodumudi; Simon, Jonathan N.

    2005-06-14

    A portable pathogen detection system that accomplishes on-site multiplex detection of targets in biological samples. The system includes: microbead specific reagents, incubation/mixing chambers, a disposable microbead capture substrate, and an optical measurement and decoding arrangement. The basis of this system is a highly flexible Liquid Array that utilizes optically encoded microbeads as the templates for biological assays. Target biological samples are optically labeled and captured on the microbeads, which are in turn captured on an ordered array or disordered array disposable capture substrate and then optically read.

  9. Application Portable Parallel Library

    NASA Technical Reports Server (NTRS)

    Cole, Gary L.; Blech, Richard A.; Quealy, Angela; Townsend, Scott

    1995-01-01

    Application Portable Parallel Library (APPL) computer program is subroutine-based message-passing software library intended to provide consistent interface to variety of multiprocessor computers on market today. Minimizes effort needed to move application program from one computer to another. User develops application program once and then easily moves application program from parallel computer on which created to another parallel computer. ("Parallel computer" also include heterogeneous collection of networked computers). Written in C language with one FORTRAN 77 subroutine for UNIX-based computers and callable from application programs written in C language or FORTRAN 77.

  10. Portable drilling mud system

    SciTech Connect

    Etter, R. W.; Briggs, J. M.

    1984-10-02

    A portable well drilling mud storage and recirculation unit includes a mud storage tank mounted on an over-the-road semi-trailer having an engine driven circulating pump mounted onboard and adapted to withdraw mud from the tank for circulation to the well and for recirculation through a set of mud agitating nozzles disposed in the bottom of the tank. A mud degassing vessel, a solids separator unit and an additive blending unit are all mounted above the tank. The degassing vessel is supported by hydraulic cylinder actuators for movement between a retracted transport position and a vertically elevated working position.

  11. Application Portable Parallel Library

    NASA Technical Reports Server (NTRS)

    Cole, Gary L.; Blech, Richard A.; Quealy, Angela; Townsend, Scott

    1995-01-01

    Application Portable Parallel Library (APPL) computer program is subroutine-based message-passing software library intended to provide consistent interface to variety of multiprocessor computers on market today. Minimizes effort needed to move application program from one computer to another. User develops application program once and then easily moves application program from parallel computer on which created to another parallel computer. ("Parallel computer" also include heterogeneous collection of networked computers). Written in C language with one FORTRAN 77 subroutine for UNIX-based computers and callable from application programs written in C language or FORTRAN 77.

  12. Portable solar cooker

    SciTech Connect

    Way, L.V.

    1980-09-02

    A portable solar cooker of the type having an insulated housing with an oven compartment enclosed therein and associated reflector elements is adapted for cooking with the housing and oven compartment in a tilted or level position. When employing only the tilting mode for tracking the sun, reflecting panels are removably attached to the top of the cooker housing. When there is a need to maintain the oven compartment level while tracking the sun during the cooking operation, the reflecting panels are removably mounted on a pivotal frame connected to a telescoping strip assembly which, in turn, is removably mounted on the topside of the cooker housing.

  13. Portable Extensible Viewer

    NASA Technical Reports Server (NTRS)

    Horowitz, Jay G.

    1997-01-01

    The use of Nonuniform Rational B-Splines (NURBS) to represent geometry and data offers a standard way to facilitate the multidisciplinary analysis and design of aeropropulsion products. Using standard geometry defined by NURBS throughout design, analysis, part definition, manufacture, and test processes saves money and time. The Portable Extensible Viewer (PEV) offers engineers of different disciplines a means to view and manipulate NURBS geometry and associated data. Under the guidance of a team of Lewis, Boeing Company, and Navy personnel, PEV was developed by NASA Lewis Research Center's Computer Services Division for Lewis' Interdisciplinary Technology Office. The aeropropulsion industry provided input to the design requirements.

  14. Portable classroom leads to partnership.

    PubMed

    Le Ber, Jeanne Marie; Lombardo, Nancy T; Weber, Alice; Bramble, John

    2004-01-01

    Library faculty participation on the School of Medicine Curriculum Steering Committee led to a unique opportunity to partner technology and teaching utilizing the library's portable wireless classroom. The pathology lab course master expressed a desire to revise the curriculum using patient cases and direct access to the Web and library resources. Since the pathology lab lacked computers, the library's portable wireless classroom provided a solution. Originally developed to provide maximum portability and flexibility, the wireless classroom consists of ten laptop computers configured with wireless cards and an access point. While the portable wireless classroom led to a partnership with the School of Medicine, there were additional benefits and positive consequences for the library.

  15. Development of portable fuel cells

    SciTech Connect

    Nakatou, K.; Sumi, S.; Nishizawa, N.

    1996-12-31

    Sanyo Electric has been concentrating on developing a marketable portable fuel cell using phosphoric acid fuel cells (PAFC). Due to the fact that this power source uses PAFC that operate at low temperature around 100{degrees} C, they are easier to handle compared to conventional fuel cells that operate at around 200{degrees} C , they can also be expected to provide extended reliable operation because corrosion of the electrode material and deterioration of the electrode catalyst are almost completely nonexistent. This power source is meant to be used independently and stored at room temperature. When it is started up, it generates electricity itself using its internal load to raise the temperature. As a result, the phosphoric acid (the electolyte) absorbs the reaction water when the temperature starts to be raised (around room temperature). At the same time the concentration and volume of the phosphoric acid changes, which may adversely affect the life time of the cell. We have studied means for starting, operating PAFC stack using methods that can simply evaluate changes in the concentration of the electrolyte in the stack with the aim of improving and extending cell life and report on them in this paper.

  16. Emergency power for fish produced in intensive, pond-based systems

    USDA-ARS?s Scientific Manuscript database

    Power failure in a heavily stocked and fed pond-based culture system can result in massive fish losses within minutes. Even in a conventional pond with a stand-by tractor powered aerator, the shock of a sudden loss of power can dramatically affect production resulting in mortalities and reduced perf...

  17. Opportunities for portable Ballard Fuel Cells

    SciTech Connect

    Voss, H.H.; Huff, J.R.

    1996-12-31

    With the increasing proliferation and sophistication of portable electronic devices in both commercial and military markets, the need has arisen for small, lightweight power supplies that can provide increased operating life over those presently available. A solution to this power problem is the development of portable Ballard Fuel Cell power systems that operate with a hydrogen fuel source and air. Ballard has developed PEM fuel cell stacks and power systems in the 25 to 100 watt range for both of these markets. For military use, Ballard has teamed with Ball Corporation and Hydrogen Consultants, Inc. and has provided the Ballard Fuel Cell stack for an ambient PEM fuel cell power system for the DoD. The system provides power from idle to I 00 watts and has the capability of delivering overloads of 125 watts for short periods of time. The system is designed to operate over a wide range of temperature, relative humidity and altitude. Hydrogen is supplied as a compressed gas, metal hydride or chemical hydride packaged in a unit that is mated to the power/control unit. The hydrogen sources provide 1.5, 5 and 15 kWh of operation, respectively. The design of the fuel cell power system enables the unit to operate at 12 volts or 24 volts depending upon the equipment being used. For commercial applications, as with the military, fuel cell power sources in the 25 to 500 watt range will be competing with advanced batteries. Ambient PEM fuel cell designs and demonstrators are being developed at 25 watts and other low power levels. Goals are minimum stack volume and weight and greatly enhanced operating life with reasonable system weight and volume. This paper will discuss ambient PEM fuel cell designs and performance and operating parameters for a number of power levels in the multiwatt range.

  18. 49 CFR 393.95 - Emergency equipment on all power units.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... under 40 CFR Part 82, Subpart G. (6) Exception. This paragraph (a) does not apply to the driven unit in... emergency reflective triangles that conform to the requirements of Federal Motor Vehicle Safety Standard No... No. 912, Highway Emergency Signals, Fourth Edition, July 30, 1979, (with an amendment dated...

  19. 49 CFR 393.95 - Emergency equipment on all power units.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... under 40 CFR Part 82, Subpart G. (6) Exception. This paragraph (a) does not apply to the driven unit in... emergency reflective triangles that conform to the requirements of Federal Motor Vehicle Safety Standard No... No. 912, Highway Emergency Signals, Fourth Edition, July 30, 1979, (with an amendment dated...

  20. Assessing emergency planning zone for new nuclear power plant considering risk of extreme external events

    NASA Astrophysics Data System (ADS)

    Alzbutas, Robertas

    2015-04-01

    In general, the Emergency Planning Zones (EPZ) are defined as well as plant site and arrangement structures are designed to minimize the potential for natural and manmade hazards external to the plant from affecting the plant safety related functions, which can affect nearby population and environment. This may include consideration of extreme winds, fires, flooding, aircraft crash, seismic activity, etc. Thus the design basis for plant and site is deeply related to the effects of any postulated external events and the limitation of the plant capability to cope with accidents i.e. perform safety functions. It has been observed that the Probabilistic Safety Assessment (PSA) methodologies to deal with EPZ and extreme external events have not reached the same level of maturity as for severe internal events. The design basis for any plant and site is deeply related to the effects of any postulated external events and the limitation of the plant capability to cope with accidents i.e. perform safety functions. As a prime example of an advanced reactor and new Nuclear Power Plant (NPP) with enhanced safety, the International Reactor Innovative and Secure (IRIS) and Site selection for New NPP in Lithuania had been considered in this work. In the used Safety-by-Design™ approach, the PSA played obviously a key role; therefore a Preliminary IRIS PSA had been developed along with the design. For the design and pre-licensing process of IRIS the external events analysis included both qualitative evaluation and quantitative assessment. As a result of preliminary qualitative analyses, the external events that were chosen for more detailed quantitative scoping evaluation were high winds and tornadoes, aircraft crash, and seismic events. For the site selection in Lithuania a detail site evaluation process was performed and related to the EPZ and risk zoning considerations. In general, applying the quantitative assessment, bounding site characteristics could be used in order to

  1. Portable Virtual Training Units

    NASA Technical Reports Server (NTRS)

    Malone, Reagan; Johnston, Alan

    2015-01-01

    The Mission Operations Lab initiated a project to design, develop, deliver, test, and validate a unique training system for astronaut and ground support personnel. In an effort to keep training costs low, virtual training units (VTUs) have been designed based on images of actual hardware and manipulated by a touch screen style interface for ground support personnel training. This project helped modernized the training system and materials by integrating them with mobile devices for training when operators or crew are unavailable to physically train in the facility. This project also tested the concept of a handheld remote device to control integrated trainers using International Space Station (ISS) training simulators as a platform. The portable VTU can interface with the full-sized VTU, allowing a trainer co-located with a trainee to remotely manipulate a VTU and evaluate a trainee's response. This project helped determine if it is useful, cost effective, and beneficial for the instructor to have a portable handheld device to control the behavior of the models during training. This project has advanced NASA Marshall Space Flight Center's (MSFC's) VTU capabilities with modern and relevant technology to support space flight training needs of today and tomorrow.

  2. From technology transfer to local manufacturing: China's emergence in the global wind power industry

    NASA Astrophysics Data System (ADS)

    Lewis, Joanna Ingram

    This dissertation examines the development of China's large wind turbine industry, including the players, the status of the technology, and the strategies used to develop turbines for the Chinese market. The primary goals of this research project are to identify the models of international technology transfer that have been used among firms in China's wind power industry; examine to what extent these technology transfers have contributed to China's ability to locally manufacture large wind turbine technology; and evaluate China's ability to become a major player in the global wind industry. China is a particularly important place to study the opportunities for and dynamics of clean energy development due to its role in global energy consumption. China is the largest coal consuming and producing nation in the world, and consequently the second largest national emitter of carbon dioxide after only the United States. Energy consumption and carbon emissions are growing rapidly, and China is expected to surpass the US and become the largest energy consuming nation and carbon dioxide emitter in coming decades. The central finding of this dissertation is that even though each firm involved in the large wind turbine manufacturing industry in China has followed a very different pathway of technology procurement for the Chinese market, all of the firms are increasing the utilization of locally-manufactured components, and many are doing so without transferring turbine technology or the associated intellectual property. Only one fully Chinese-owned firm, Goldwind, has succeeded in developing a commercially available large wind turbine for the Chinese market. No Chinese firms or foreign firms are manufacturing turbines in China for export overseas, though many have stated plans to do so. There already exists a possible niche market for the smaller turbines that are currently being made in China, particularly in less developed countries that are looking for less expensive

  3. Evaluation of three portable suction devices.

    PubMed

    Simon, E J; Davidson, J A; Boom, S J

    1993-09-01

    Three portable suction devices were evaluated and compared with a wall-mounted vacuum driven suction unit. The Repro-med Res-Q-Vac, the Dräger Sujector 2000 and the Laerdal suction unit were assessed by measuring the time taken to aspirate 140 ml of mock gastric contents. The respective times for each device, expressed as mean and (range) were 7.39 (4.3-10.4), 8.6 (7.8-9.4) and 11.4 (9.4-12.6) s. These compare favourable with the Ohmeda suction unit (7.27 (6.2-8.9)). Each type of device has advantages and disadvantages when factors such as size, power supply and portability are considered, and each will be the most suitable for a particular situation.

  4. Advances in Materials and System Technology for Portable Fuel Cells

    NASA Technical Reports Server (NTRS)

    Narayanan, Sekharipuram R.

    2007-01-01

    This viewgraph presentation describes the materials and systems engineering used for portable fuel cells. The contents include: 1) Portable Power; 2) Technology Solution; 3) Portable Hydrogen Systems; 4) Direct Methanol Fuel Cell; 5) Direct Methanol Fuel Cell System Concept; 6) Overview of DMFC R&D at JPL; 7) 300-Watt Portable Fuel Cell for Army Applications; 8) DMFC units from Smart Fuel Cell Inc, Germany; 9) DMFC Status and Prospects; 10) Challenges; 11) Rapid Screening of Well-Controlled Catalyst Compositions; 12) Screening of Ni-Zr-Pt-Ru alloys; 13) Issues with New Membranes; 14) Membranes With Reduced Methanol Crossover; 15) Stacks; 16) Hybrid DMFC System; 17) Small Compact Systems; 18) Durability; and 19) Stack and System Parameters for Various Applications.

  5. Advances in Materials and System Technology for Portable Fuel Cells

    NASA Technical Reports Server (NTRS)

    Narayanan, Sekharipuram R.

    2007-01-01

    This viewgraph presentation describes the materials and systems engineering used for portable fuel cells. The contents include: 1) Portable Power; 2) Technology Solution; 3) Portable Hydrogen Systems; 4) Direct Methanol Fuel Cell; 5) Direct Methanol Fuel Cell System Concept; 6) Overview of DMFC R&D at JPL; 7) 300-Watt Portable Fuel Cell for Army Applications; 8) DMFC units from Smart Fuel Cell Inc, Germany; 9) DMFC Status and Prospects; 10) Challenges; 11) Rapid Screening of Well-Controlled Catalyst Compositions; 12) Screening of Ni-Zr-Pt-Ru alloys; 13) Issues with New Membranes; 14) Membranes With Reduced Methanol Crossover; 15) Stacks; 16) Hybrid DMFC System; 17) Small Compact Systems; 18) Durability; and 19) Stack and System Parameters for Various Applications.

  6. 49 CFR 393.95 - Emergency equipment on all power units.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... No. 912, Highway Emergency Signals, Fourth Edition, July 30, 1979, (with an amendment dated November..., Oct. 28, 1982; 59 FR 34712, July 6, 1994; 67 FR 61225, Sept. 27, 2002; 70 FR 48054, Aug. 15, 2005; 72...

  7. Portable Hyperbaric Chamber

    NASA Technical Reports Server (NTRS)

    Schneider, William C. (Inventor); Locke, James P. (Inventor); DeLaFuente, Horacio (Inventor)

    2001-01-01

    A portable, collapsible hyperbaric chamber was developed. A toroidal inflatable skeleton provides initial structural support for the chamber, allowing the attendant and/or patient to enter the chamber. Oval hatches mate against bulkhead rings, and the hyperbaric chamber is pressurized. The hatches seal against an o-ring, and the internal pressure of the chamber provides the required pressure against the hatch to maintain an airtight seal. In the preferred embodiment, the hyperbaric chamber has an airlock to allow the attendant to enter and exit the patient chamber during treatment. Visual communication is provided through portholes in the patient and/or airlock chamber. Life monitoring and support systems are in communication with the interior of the hyperbaric chamber and/or airlock chamber through conduits and/or sealed feed-through connectors into the hyperbaric chamber.

  8. Portable Radiation Detectors

    NASA Technical Reports Server (NTRS)

    1997-01-01

    Through a Small Business Innovation Research (SBIR) contract from Kennedy Space Center, General Pneumatics Corporation's Western Research Center satisfied a NASA need for a non-clogging Joule-Thomson cryostat to provide very low temperature cooling for various sensors. This NASA-supported cryostat development played a key part in the development of more portable high-purity geranium gamma-ray detectors. Such are necessary to discern between the radionuclides in medical, fuel, weapon, and waste materials. The outcome of the SBIR project is a cryostat that can cool gamma-ray detectors, without vibration, using compressed gas that can be stored compactly and indefinitely in a standby mode. General Pneumatics also produces custom J-T cryostats for other government, commercial and medical applications.

  9. Portable active interrogation system.

    SciTech Connect

    Moss, C. E.; Brener, M. W.; Hollas, C. L.; Myers, W. L.

    2004-01-01

    The system consists of a pulsed DT neutron generator (5 x 10{sup 7} n/s) and a portable but high intrinsic efficiency, custom-designed, polyethylene-moderated {sup 3}He neutron detector. A multichannel scaler card in a ruggedized laptop computer acquires the data. A user-friendly LabVIEW program analyzes and displays the data. The program displays a warning message when highly enriched uranium or any other fissionable materials is detected at a specified number of sigmas above background in the delayed region between pulses. This report describes the system and gives examples of the response of the system to highly enriched uranium and some other fissionable materials, at several distances and with various shielding materials.

  10. Portable appliance security apparatus

    NASA Technical Reports Server (NTRS)

    Kerley, J. J. (Inventor)

    1981-01-01

    An apparatus for securing a small computer, or other portable appliance, against theft is described. It is comprised of a case having an open back through which the computer is installed or removed. Guide members in the form of slots are formed in a rear portion of opposite walls of the case for receiving a back plate to cover the opening and thereby secure the computer within the case. An opening formed in the top wall of the case exposes the keyboard and display of the computer. The back plate is locked in the closed position by a key-operated plug type lock. The lock is attached to one end of a hold down cable, the opposite end thereof being secured to a desk top or other stationary object. Thus, the lock simultaneously secures the back plate to the case and retains the case to the stationary object.

  11. Portable Hyperbaric Chamber

    NASA Technical Reports Server (NTRS)

    Schneider, William C. (Inventor); Locke, James P. (Inventor); DeLaFuente, Horacio (Inventor)

    2001-01-01

    A portable, collapsible hyperbaric chamber was developed. A toroidal inflatable skeleton provides initial structural support for the chamber, allowing the attendant and/or patient to enter the chamber. Oval hatches mate against bulkhead rings, and the hyperbaric chamber is pressurized. The hatches seal against an o-ring, and the internal pressure of the chamber provides the required pressure against the hatch to maintain an airtight seal. In the preferred embodiment, the hyperbaric chamber has an airlock to allow the attendant to enter and exit the patient chamber during treatment. Visual communication is provided through portholes in the patient and/or airlock chamber. Life monitoring and support systems are in communication with the interior of the hyperbaric chamber and/or airlock chamber through conduits and/or sealed feed-through connectors into the hyperbaric chamber.

  12. Powerfarm: A power and emergency management thread-based software tool for the ATLAS Napoli Tier2

    NASA Astrophysics Data System (ADS)

    Doria, Alessandra; Carlino, Gianpaolo; Iengo, Salvatore; Merola, Leonardo; Ricciardi, Sergio; Staffa, Mariacarla

    2010-04-01

    The large computing power and the storage systems available in a Grid site or in a computing center are composed of several servers and devices, each with its own specific role in the center. A management and fault recovery system is of primary importance for management operations and to preserve the integrity of the systems in case of emergencies, such as power outages or temperature peaks. We developed Powerfarm, a customizable thread-based software system that monitors several parameters such as, for example, the status of power supplies, room and CPU temperatures and it promptly reacts to values out of range with the appropriate actions. Powerfarm enforces hardware and software dependencies between devices and it is able to switch them on/off in the particular order induced by the dependencies, so it's also useful for the site administrator to speed up the management of scheduled downtimes.

  13. Research and Improvement on Characteristics of Emergency Diesel Generating Set Mechanical Support System in Nuclear Power Plant

    NASA Astrophysics Data System (ADS)

    Zhe, Yang

    2017-06-01

    There are often mechanical problems of emergency power generation units in nuclear power plant, which bring a great threat to nuclear safety. Through analyzing the influence factors caused by mechanical failure, the existing defects of the design of mechanical support system are determined, and the design idea has caused the direction misleading in the field of maintenance and transformation. In this paper, research analysis is made on basic support design of diesel generator set, main pipe support design and important components of supercharger support design. And this paper points out the specific design flaws and shortcomings, and proposes targeted improvement program. Through the implementation of improvement programs, vibration level of unit and mechanical failure rate are reduced effectively. At the same time, it also provides guidance for design, maintenance and renovation of diesel generator mechanical support system of nuclear power plants in the future.

  14. Ensemble of LIF neurons with random membrane decay constant: emergence of power-law behavior in ISI distribution.

    PubMed

    Karmeshu; Sharma, Sudheer Kumar

    2014-09-01

    A theoretical framework is proposed to explain the emergence of power law behavior in the spiking neurons where the membrane decay constant is assumed to vary randomly across the population of neurons. The proposed approach, akin to superstatistics, provides a plausible mechanism for generating power law behavior in non-equilibrium systems with fluctuations in intensive quantity. This approach has led to formulation of a hypothesis that power law behavior in inter-spike interval (ISI) distribution results when several neurons group together and fire together. In presence of fluctuations in membrane decay constant governed by gamma distribution, the asymptotic analysis of ISI distribution yields a power law. This finding has been corroborated by simulation study when different types of probability distributions for membrane decay constant are considered. Our results are in agreement with the empirical findings due to Kim (2004) where the spiking trains of Suprachiasmatic nucleus (SCN) neurons display power law behavior. Further investigations in subthreshold regime reveals that the averaging of the membrane potential over a large number of neurons also yields power law.

  15. Mathematical simulation of the operating emergency conditions for the purpose of energy efficiency increase of thermal power plants management

    NASA Astrophysics Data System (ADS)

    Gazizova, O. V.; Malafeyev, A. V.; Kondrashova, Y. N.

    2016-04-01

    The regulations of the energy saving policy, being implemented at present, require an enhanced reliability of the power supply systems and operations of the motive loading, actuating machines and mechanisms, for the purpose of reduction of power inputs under operating emergency conditions. The development of industrial units of the distributed generation enables putting the generators, equipped with motors of the comparable power, into the operation, which is non-parallel to a power system. To provide static stability under such conditions the complex approach is required since it allows estimating the stability of the generators and the load during parallel and non-parallel operations with the power system and a complex circuit configuration. The mathematical models of units of the distributed generation and motive loading considering the character of the given mechanism are developed. They are implemented in the software package allowing the operative-dispatch personnel of the industrial power stations to forecast similar modes and develop special measures to provide a stable operation of electrical machines.

  16. Triboelectric nanogenerator for powering portable electronics

    DOEpatents

    Wang, Zhong Lin; Wang, Sihong; Lin, Long; Zhu, Guang; Lin, Zong-Hong

    2017-03-14

    A triboelectric generator includes a first contact charging member and a second contact charging member. The first contact charging member includes a first contact layer and a conductive electrode layer. The first contact layer includes a material that has a triboelectric series rating indicating a propensity to gain electrons due to a contacting event. The conductive electrode layer is disposed along the back side of the contact layer. The second contact charging member is spaced apart from and disposed oppositely from the first contact charging member. It includes an electrically conductive material layer that has a triboelectric series rating indicating a propensity to lose electrons when contacted by the first contact layer during the contacting event. The electrically conductive material acts as an electrode. A mechanism maintains a space between the first contact charging member and the second contact charging member except when a force is applied thereto.

  17. The Model State Emergency Health Powers Act: planning for and response to bioterrorism and naturally occurring infectious diseases.

    PubMed

    Gostin, Lawrence O; Sapsin, Jason W; Teret, Stephen P; Burris, Scott; Mair, Julie Samia; Hodge, James G; Vernick, Jon S

    2002-08-07

    The Center for Law and the Public's Health at Georgetown and Johns Hopkins Universities drafted the Model State Emergency Health Powers Act (MSEHPA or Model Act) at the request of the Centers for Disease Control and Prevention. The Model Act provides state actors with the powers they need to detect and contain bioterrorism or a naturally occurring disease outbreak. Legislative bills based on the MSEHPA have been introduced in 34 states. Problems of obsolescence, inconsistency, and inadequacy may render current state laws ineffective or even counterproductive. State laws often date back to the early 20th century and have been built up in layers over the years. They frequently predate the vast changes in the public health sciences and constitutional law. The Model Act is structured to reflect 5 basic public health functions to be facilitated by law: (1) preparedness, comprehensive planning for a public health emergency; (2) surveillance, measures to detect and track public health emergencies; (3) management of property, ensuring adequate availability of vaccines, pharmaceuticals, and hospitals, as well as providing power to abate hazards to the public's health; (4) protection of persons, powers to compel vaccination, testing, treatment, isolation, and quarantine when clearly necessary; and (5) communication, providing clear and authoritative information to the public. The Model Act also contains a modernized, extensive set of principles and requirements to safeguard personal rights. Law can be a tool to improve public health preparedness. A constitutional democracy must balance the common good with respect for personal dignity, toleration of groups, and adherence to principles of justice.

  18. High intensity portable fluorescent light

    NASA Technical Reports Server (NTRS)

    Kendall, F. B.

    1972-01-01

    Eight high intensity portable fluorescent lights were produced. Three prototype lights were also produced, two of which were subsequently updated to the physical and operational configuration of the qualification and flight units. Positioning of lamp apertures and reflectors in these lights is such that the light is concentrated and intensified in a specific pattern rather than widely diffused. Indium amalgam control of mercury vapor pressure in the lamp gives high output at lamp ambient temperatures up to 105 C. A small amount of amalgam applied to each electrode stem helps to obtain fast warm-up. Shrinking a Teflon sleeve on the tube and potting metal caps on each end of the lamp minimizes dispersion of mercury vapor and glass particles in the event of accidental lamp breakage. Operation at 20 kHz allows the lamps to consume more power than at low frequency, thus increasing their light output and raising their efficiency. When used to expose color photographic film, light from the lamps produces results approximately equal to sunlight.

  19. Manual resuscitators and portable ventilators.

    PubMed

    Phillips, G D; Skowronski, G A

    1986-08-01

    This paper reviews the state of the art in Australia of manually operated, self-inflating bag resuscitators, including the Laerdal, Air Viva and Ambu; manually operated bags dependent upon an oxygen supply, including Mapleson B, C, E and F, the CIG Medishield Oxy-Saver and modified Oxy-Viva Resuscitator 3, and the Komesaroff Oxy-Resuscitator RD85; oxygen-powered resuscitators, including the Oxy-Viva Resuscitator 3 with Demand and RM2 Valves, and the Oxylife FM85; and portable ventilators, including the Drager Oxylog, and Ohmeda Logic 07. Specific comment is made to the effect that the design of the resuscitator is often less important than the knowledge and ability of the operator in using the equipment to achieve adequate lung ventilation. The simplest, cheapest, most useful resuscitators are the manually operated self-inflating bag assemblies. With special training, use of more complex equipment can be justified in some circumstances. The more complex the equipment, the greater the risk of inappropriate use, and the greater the risk of equipment malfunction unless a regular maintenance program is followed.

  20. Portable pneumatic biventricular driver for the Thoratec ventricular assist device.

    PubMed

    Farrar, D J; Buck, K E; Coulter, J H; Kupa, E J

    1997-01-01

    As patients with left ventricular (LVAD) and biventricular assist devices are supported for increasingly long durations while awaiting heart transplantation or cardiac recovery, there is a need to facilitate greater patient mobility and ambulation. To meet these needs, the authors have developed the Thoratec TLC-II Portable VAD Driver, which is a small brief-case sized (33 x 34 x 13 cm) pneumatic unit for Thoratec's paracorporeal and implantable VADs. The TLC-II consists of an electric motor driven air compressor for supplying both positive and negative air pressure, solenoid valves for switching between LVAD/RVAD filling and ejection, and microcontroller based electronics and firmware. Four power sources are provided: external power, two rechargeable lithium-ion battery packs, and an emergency battery that drives an independent electronic back-up system. The 8 kg TLC-II can be carried by hand, with a shoulder strap, or pushed on a wheeled mobility cart. Trend information stored in the TLC-II can be accessed by an external system computer with a color touchscreen mounted on a docking station, which also houses the battery charger. Control configurations (univentricular/biventricular operation, beat rates, etc.) are entered on the touchscreen and programmed into the TLC-II. In vitro testing demonstrates the ability to pump VAD outputs up to 7 L/min. By providing improved patient mobility, this small driver will enhance rehabilitation and improve the quality of life of VAD patients.