WorldWideScience

Sample records for technology phase

  1. Photovoltaic Manufacturing Technology Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    Stern, M.J. (Utility Power Group, Chatsworth, CA (United States))

    1991-11-01

    This report documents Utility Power Group's (UPG) contract under Phase 1 of the Photovoltaic Manufacturing Technology (PVMaT) project. Specifically, the report contains the results of a manufacturing technology cost analysis based on an existing PV module production facility. It also projects the cost analysis of a future production facility based on a larger module area, a larger production rate, and the elimination of several technical obstacles. With a coordinated 18-month engineering effort, the technical obstacles could be overcome. Therefore, if solutions to the financial obstacles concerning production expansion were found, UPG would be able to manufacture PV modules at a cost of under $1.25 per watt by 1994.

  2. Photovoltaic manufacturing technology, Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    1992-10-01

    This report describes subcontracted research by the Chronar Corporation, prepared by Advanced Photovoltaic Systems, Inc. (APS) for Phase 1 of the Photovoltaic Manufacturing Technology Development project. Amorphous silicon is chosen as the PV technology that Chronar Corporation and APS believe offers the greatest potential for manufacturing improvements, which, in turn, will result in significant cost reductions and performance improvements in photovoltaic products. The APS Eureka'' facility was chosen as the manufacturing system that can offer the possibility of achieving these production enhancements. The relationship of the Eureka'' facility to Chronar's batch'' plants is discussed. Five key areas are also identified that could meet the objectives of manufacturing potential that could lead to improved performance, reduced manufacturing costs, and significantly increased production. The projected long-term potential benefits of these areas are discussed, as well as problems that may impede the achievement of the hoped-for developments. A significant number of the problems discussed are of a generic nature and could be of general interest to the industry. The final section of this document addresses the cost and time estimates for achieving the solutions to the problems discussed earlier. Emphasis is placed on the number, type, and cost of the human resources required for the project.

  3. Two Phase Technology Development Initiatives

    Science.gov (United States)

    Didion, Jeffrey R.

    1999-01-01

    Three promising thermal technology development initiatives, vapor compression thermal control system, electronics cooling, and electrohydrodynamics applications are outlined herein. These technologies will provide thermal engineers with additional tools to meet the thermal challenges presented by increased power densities and reduced architectural options that will be available in future spacecraft. Goddard Space Flight Center and the University of Maryland are fabricating and testing a 'proto- flight' vapor compression based thermal control system for the Ultra Long Duration Balloon (ULDB) Program. The vapor compression system will be capable of transporting approximately 400 W of heat while providing a temperature lift of 60C. The system is constructed of 'commercial off-the-shelf' hardware that is modified to meet the unique environmental requirements of the ULDB. A demonstration flight is planned for 1999 or early 2000. Goddard Space Flight Center has embarked upon a multi-discipline effort to address a number of design issues regarding spacecraft electronics. The program addressed the high priority design issues concerning the total mass of standard spacecraft electronics enclosures and the impact of design changes on thermal performance. This presentation reviews the pertinent results of the Lightweight Electronics Enclosure Program. Electronics cooling is a growing challenge to thermal engineers due to increasing power densities and spacecraft architecture. The space-flight qualification program and preliminary results of thermal performance tests of copper-water heat pipes are presented. Electrohydrodynamics (EHD) is an emerging technology that uses the secondary forces that result from the application of an electric field to a flowing fluid to enhance heat transfer and manage fluid flow. A brief review of current EHD capabilities regarding heat transfer enhancement of commercial heat exchangers and capillary pumped loops is presented. Goddard Space Flight

  4. Array Phase Shifters: Theory and Technology

    Science.gov (United States)

    Romanofsky, Robert R.

    2007-01-01

    While there are a myriad of applications for microwave phase shifters in instrumentation and metrology, power combining, amplifier linearization, and so on, the most prevalent use is in scanning phased-array antennas. And while this market continues to be dominated by military radar and tracking platforms, many commercial applications have emerged in the past decade or so. These new and potential applications span low-Earth-orbit (LEO) communications satellite constellations and collision warning radar, an aspect of the Intelligent Vehicle Highway System or Automated Highway System. In any case, the phase shifters represent a considerable portion of the overall antenna cost, with some estimates approaching 40 percent for receive arrays. Ferrite phase shifters continue to be the workhorse in military-phased arrays, and while there have been advances in thin film ferrite devices, the review of this device technology in the previous edition of this book is still highly relevant. This chapter will focus on three types of phase shifters that have matured in the past decade: GaAs MESFET monolithic microwave integrated circuit (MMIC), micro-electromechanical systems (MEMS), and thin film ferroelectric-based devices. A brief review of some novel devices including thin film ferrite phase shifters and superconducting switches for phase shifter applications will be provided. Finally, the effects of modulo 2 phase shift limitations, phase errors, and transient response on bit error rate degradation will be considered.

  5. Phase shifter technology assessment - Prospects and applications

    Science.gov (United States)

    Sokolov, Vladimir

    1991-01-01

    Capabilities and limitations of MMIC phase shifter technology at microwave and millimeter wave frequencies are reviewed. MMIC-based phase arrays make it possible to integrate active elements at the array face, i.e., to incorporate transmit power amplifiers and/or low noise amplifiers at each antenna element. Active elements make it possible to increase power efficiency and reliability and provide graceful degradation. Monolithic integration of the various transmit/receive functions including phase shifting is considered to be feasible through at least the lower millimeter-wave frequency range (about 30-100 GHz). MMIC integration also allows more flexibility in array design including those that are intended for airborne conformal applications.

  6. Emerging Communication Technologies (ECT) Phase 4 Report

    Science.gov (United States)

    Bastin, Gary L.; Harris, William G.; Marin, Jose A.; Nelson, Richard A.

    2005-01-01

    The Emerging Communication Technology (ECT) project investigated three First Mile communication technologies in support of NASA s Crew Exploration Vehicle (CEV), Advanced Range Technology Working Group (ARTWG), and the Advanced Spaceport Technology Working Group (ASTWG). These First Mile technologies have the purpose of interconnecting mobile users with existing Range Communication infrastructures on a 24/7 basis. ECT is a continuation of the Range Information System Management (RISM) task started in 2002. This is the fourth year of the project.

  7. Technology Refresh Program Launches Phase II | Poster

    Science.gov (United States)

    The Technology Refresh Program (TRP) is an NCI-funded initiative designed to promote efficient spending on computer equipment by providing staff members with access to the latest technology to meet their computing needs, said Kyle Miller, IT coordinator, Computer and Statistical Services (C&SS), NCI at Frederick.

  8. Clean Cast Steel Technology, Phase IV

    Energy Technology Data Exchange (ETDEWEB)

    Charles E. Bates

    2003-02-24

    The objective of the Clean Cast Steel Technology Program was to improve casting product quality by removing or minimizing oxide defects and to allow the production of higher integrity castings for high speed machining lines. Previous research has concentrated on macro-inclusions that break, chip, or crack machine tool cutters and drills and cause immediate shutdown of the machining lines. The overall goal of the project is to reduce the amount of surface macro-inclusions and improve the machinability of steel castings. Macro-inclusions and improve the machinability of steel castings. Macro-inclusions have been identified by industrial sponsors as a major barrier to improving the quality and marketability of steel castings.

  9. Two-Phase Technology at NASA/Johnson Space Center

    Science.gov (United States)

    Ungar, Eugene K.; Nicholson, Leonard S. (Technical Monitor)

    1999-01-01

    Since the baseline International Space Station (ISS) External Active Thermal Control System (EATCS) was changed from a two-phase mechanically pumped system to a single phase cascade system in the fall of 1993, two-phase EATCS research has continued at a low level at JSC. One of-the lessons of the ISS EATCS selection was that two-phase thermal control systems must have significantly lower power than comparable single phase systems to overcome their larger radiator area, larger line and fluid mass, and perceived higher technical risk. Therefore, research at JSC has concentrated on low power mechanically pumped two-phase EATCSs. In the presentation, the results of a study investigating the trade of single and two-phase mechanically pumped EATCSs for space vehicles will be summarized. The low power two-phase mechanically pumped EATCS system under development at JSC will be described in detail and the current design status of the subscale test unit will be reviewed. Also, performance predictions for a full size EATCS will be presented. In addition to the discussion of two-phase mechanically pumped EATCS development at JSC, two-phase technologies under development for biological water processing will be discussed. These biological water processor technologies are being prepared for a 2001 flight experiment and subsequent usage on the TransHab module on the International Space Station.

  10. Advanced Lost Foam Casting Technology - Phase V

    Energy Technology Data Exchange (ETDEWEB)

    Wanliang Sun; Harry E. Littleton; Charles E. Bates

    2004-04-29

    Previous research, conducted under DOE Contracts DE-FC07-89ID12869, DE-FC07-93ID12230 and DE-FC07-95ID113358 made significant advances in understanding the Lost Foam Casting (LFC) Process and clearly identified areas where additional developments were needed to improve the process and make it more functional in industrial environments. The current project focused on eight tasks listed as follows: Task 1--Computational Model for the Process and Data Base to Support the Model; Task 2--Casting Dimensional Accuracy; Task 3--Pattern Production; Task 4--Improved Pattern Materials; Task 5--Coating Control; Task 6--In-Plant Case Studies; Task 7--Energy and the Environmental Data; and Task 8--Technology Transfer. This report summarizes the work done on all tasks in the period of October 1, 1999 through September 30, 2004. The results obtained in each task and subtask are summarized in this Executive Summary and details are provided in subsequent sections of the report.

  11. Hybrid Propulsion Technology Program, phase 1. Volume 1: Executive summary

    Science.gov (United States)

    1989-01-01

    The study program was contracted to evaluate concepts of hybrid propulsion, select the most optimum, and prepare a conceptual design package. Further, this study required preparation of a technology definition package to identify hybrid propulsion enabling technologies and planning to acquire that technology in Phase 2 and demonstrate that technology in Phase 3. Researchers evaluated two design philosophies for Hybrid Rocket Booster (HRB) selection. The first is an ASRM modified hybrid wherein as many components/designs as possible were used from the present Advanced Solid Rocket Motor (ASRM) design. The second was an entirely new hybrid optimized booster using ASRM criteria as a point of departure, i.e., diameter, thrust time curve, launch facilities, and external tank attach points. Researchers selected the new design based on the logic of optimizing a hybrid booster to provide NASA with a next generation vehicle in lieu of an interim advancement over the ASRM. The enabling technologies for hybrid propulsion are applicable to either and vehicle design may be selected at a downstream point (Phase 3) at NASA's discretion. The completion of these studies resulted in ranking the various concepts of boosters from the RSRM to a turbopump fed (TF) hybrid. The scoring resulting from the Figure of Merit (FOM) scoring system clearly shows a natural growth path where the turbopump fed solid liquid staged combustion hybrid provides maximized payload and the highest safety, reliability, and low life cycle costing.

  12. Early phase Technology Assessment of nanotechnology in oncology.

    Science.gov (United States)

    Retèl, Valesca P; Hummel, Marjan J M; van Harten, Willem H

    2008-01-01

    To perform early Technology Assessment (TA) of nanotechnology in oncology. The possibilities of nanotechnology for detection (imaging), diagnosis and treatment of cancer are subject of different research programs where major investments are concerned. As a range of bio- nanotechnologies is expected to enter the oncology field it is relevant to consider the various aspects involved in especially early TA. This article provides two cases of early assessment of (predecessors of) nanotechnologies: Microarray Analysis and Photodynamic Therapy implementation, which methodology can be extrapolated to other nanotechnologies in oncology. Constructive Technology Assessment (CTA) is used for the introduction of technologies that are still in a dynamic phase of development or in an early stage of diffusion. The selection of studied aspects in CTA is based on: clinical aspects (safety, efficacy, and effectiveness), economic (cost-effectiveness), patient related (QoL, ethical/juridical and psychosocial), organizational aspects (diffusion and adoption) and scenario drafting. The features of the technology and the phase of implementation are decisive for choices and timing of the specific aspects to be studied. A framework was drafted to decide on the relevant aspects. In the first case, early implementation of Microarray Analysis; clinical effectiveness, logistics, patient centeredness and scenario drafting were given priority. Related to the diffusion-phase of Photodynamic Therapy however other aspects were evaluated, such as early cost-effectiveness analysis for possible reimbursement. Often CTA will result in a mixed method design. Especially scenario drafting is a powerful instrument to predict possible developments that can be anticipated upon in the assessment. CTA is appropriate for the study of early implementation of new technologies in oncology. In early TA small series often necessitate a mix of quantitative and qualitative methods. The features of nanotechnology

  13. An Overview of SBIR Phase 2 Communications Technology and Development

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.

    2015-01-01

    Technological innovation is the overall focus of NASA's Small Business Innovation Research (SBIR) program. The program invests in the development of innovative concepts and technologies to help NASA's mission directorates address critical research and development needs for agency projects. This report highlights innovative SBIR Phase II projects from 2007-2012 specifically addressing areas in Communications Technology and Development which is one of six core competencies at NASA Glenn Research Center. There are eighteen technologies featured with emphasis on a wide spectrum of applications such as with a security-enhanced autonomous network management, secure communications using on-demand single photons, cognitive software-defined radio, spacesuit audio systems, multiband photonic phased-array antenna, and much more. Each article in this booklet describes an innovation, technical objective, and highlights NASA commercial and industrial applications. This report serves as an opportunity for NASA personnel including engineers, researchers, and program managers to learn of NASA SBIR's capabilities that might be crosscutting into this technology area. As the result, it would cause collaborations and partnerships between the small companies and NASA Programs and Projects resulting in benefit to both SBIR companies and NASA.

  14. An Overview of 2014 SBIR Phase 1 and Phase 2 Communications Technology and Development

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.; Morris, Jessica R.

    2015-01-01

    NASA's Small Business Innovation Research (SBIR) program focuses on technological innovation by investing in development of innovative concepts and technologies to help NASA mission directorates address critical research needs for Agency programs. This report highlights eight of the innovative SBIR 2014 Phase I and Phase II projects that emphasize one of NASA Glenn Research Center's six core competencies-Communication Technology and Development. The technologies cover a wide spectrum of applications such as X-ray navigation, microsensor instrument for unmanned aerial vehicle airborne atmospheric measurements, 16-element graphene-based phased array antenna system, interferometric star tracker, ultralow power fast-response sensor, and integrated spacecraft navigation and communication. Each featured technology describes an innovation, technical objective, and highlights NASA commercial and industrial applications. This report provides an opportunity for NASA engineers, researchers, and program managers to learn how NASA SBIR technologies could help their programs and projects, and lead to collaborations and partnerships between the small SBIR companies and NASA that would benefit both.

  15. Innovative technology summary report: six phase soil heating

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-04-01

    Six Phase Soil Heating (SPSH) was developed to remediate soils contaminated with volatile and semi-volatile organic compounds. SPSH is designed to enhance the removal of contaminants from the subsurface during soil vapor extraction. The innovation combines an emerging technology, that of six-phase electrical heating, with a baseline technology, soil vapor extraction, to produce a more efficient in situ remediation system for difficult soil and/or contaminant applications. SPSH is especially suited to sites where contaminants are tightly bound to clays and are thus difficult to remove using soil vapor extraction alone. Target zones to be treated would most likely be above the water table, but a thicker treatment zone could be addressed by hydraulically lowering the water table with pumping wells.

  16. Engine Validation of Noise and Emission Reduction Technology Phase I

    Science.gov (United States)

    Weir, Don (Editor)

    2008-01-01

    This final report has been prepared by Honeywell Aerospace, Phoenix, Arizona, a unit of Honeywell International, Inc., documenting work performed during the period December 2004 through August 2007 for the NASA Glenn Research Center, Cleveland, Ohio, under the Revolutionary Aero-Space Engine Research (RASER) Program, Contract No. NAS3-01136, Task Order 8, Engine Validation of Noise and Emission Reduction Technology Phase I. The NASA Task Manager was Dr. Joe Grady of the NASA Glenn Research Center. The NASA Contract Officer was Mr. Albert Spence of the NASA Glenn Research Center. This report is for a test program in which NASA funded engine validations of integrated technologies that reduce aircraft engine noise. These technologies address the reduction of engine fan and jet noise, and noise associated with propulsion/airframe integration. The results of these tests will be used by NASA to identify the engineering tradeoffs associated with the technologies that are needed to enable advanced engine systems to meet stringent goals for the reduction of noise. The objectives of this program are to (1) conduct system engineering and integration efforts to define the engine test-bed configuration; (2) develop selected noise reduction technologies to a technical maturity sufficient to enable engine testing and validation of those technologies in the FY06-07 time frame; (3) conduct engine tests designed to gain insight into the sources, mechanisms and characteristics of noise in the engines; and (4) establish baseline engine noise measurements for subsequent use in the evaluation of noise reduction.

  17. Application of ionic liquid in liquid phase microextraction technology.

    Science.gov (United States)

    Han, Dandan; Tang, Baokun; Lee, Yu Ri; Row, Kyung Ho

    2012-11-01

    Ionic liquids (ILs) are novel nonmolecular solvents. Their unique properties, such as high thermal stability, tunable viscosity, negligible vapor pressure, nonflammability, and good solubility for inorganic and organic compounds, make them excellent candidates as extraction media for a range of microextraction techniques. Many physical properties of ILs can be varied, and the structural design can be tuned to impart the desired functionality and enhance the analyte extraction selectivity, efficiency, and sensitivity. This paper provides an overview of the applications of ILs in liquid phase microextraction technology, such as single-drop microextraction, hollow fiber based liquid phase microextraction, and dispersive liquid-liquid microextraction. The sensitivity, linear calibration range, and detection limits for a range of target analytes in the methods were analyzed to determine the advantages of ILs in liquid phase microextraction. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  18. Technology verification phase. Dynamic isotope power system. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Halsey, D.G.

    1982-03-10

    The Phase I requirements of the Kilowatt Isotope Power System (KIPS) program were to make a detailed Flight System Conceptual Design (FSCD) for an isotope fueled organic Rankine cycle power system and to build and test a Ground Demonstration System (GDS) which simulated as closely as possible the operational characteristics of the FSCD. The activities and results of Phase II, the Technology Verification Phase, of the program are reported. The objectives of this phase were to increase system efficiency to 18.1% by component development, to demonstrate system reliability by a 5000 h endurance test and to update the flight system design. During Phase II, system performance was improved from 15.1% to 16.6%, an endurance test of 2000 h was performed while the flight design analysis was limited to a study of the General Purpose Heat Source, a study of the regenerator manufacturing technique and analysis of the hardness of the system to a laser threat. It was concluded from these tests that the GDS is basically prototypic of a flight design; all components necessary for satisfactory operation were demonstrated successfully at the system level; over 11,000 total h of operation without any component failure attested to the inherent reliability of this type of system; and some further development is required, specifically in the area of performance. (LCL)

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

    Energy Technology Data Exchange (ETDEWEB)

    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

  20. The role of technology in reducing health care costs. Phase II and phase III.

    Energy Technology Data Exchange (ETDEWEB)

    Cilke, John F.; Parks, Raymond C.; Funkhouser, Donald Ray; Tebo, Michael A.; Murphy, Martin D.; Hightower, Marion Michael; Gallagher, Linda K.; Craft, Richard Layne, II; Garcia, Rudy John

    2004-04-01

    In Phase I of this project, reported in SAND97-1922, Sandia National Laboratories applied a systems approach to identifying innovative biomedical technologies with the potential to reduce U.S. health care delivery costs while maintaining care quality. The effort provided roadmaps for the development and integration of technology to meet perceived care delivery requirements and an economic analysis model for development of care pathway costs for two conditions: coronary artery disease (CAD) and benign prostatic hypertrophy (BPH). Phases II and III of this project, which are presented in this report, were directed at detailing the parameters of telemedicine that influence care delivery costs and quality. These results were used to identify and field test the communication, interoperability, and security capabilities needed for cost-effective, secure, and reliable health care via telemedicine.

  1. Alternating phase shift mask technology for 65nm logic applications

    Science.gov (United States)

    Chakravorty, Kishore K.; Henrichs, Sven; Qiu, Wei; Chavez, Joas L.; Liu, Yi-Ping; Ghadiali, Firoz; Yung, Karmen; Wilcox, Nathan; Silva, Mary; Ma, Jian; Qu, Ping; Irvine, Brian; Yun, Henry; Cheng, Wen-Hao; Farnsworth, Jeff

    2006-03-01

    Alternating Phase Shift Mask (APSM) Technology has been developed and successfully implemented for the poly gate of 65nm node Logic application at Intel. This paper discusses the optimization of the mask design rules and fabrication process in order to enable high volume manufacturability. Intel's APSM technology is based on a dual sided trenched architecture. To meet the stringent OPC requirements associated with patterning of narrow gates required for the 65nm node, Chrome width between the Zero and Pi aperture need to be minimized. Additionally, APSM lithography has an inherently low MEEF that furthermore, drives a narrower Chrome line as compared to the Binary approach. The double sided trenched structure with narrow Chrome lines are mechanically vulnerable and prone to damage when exposed to conventional mask processing steps. Therefore, new processing approaches were developed to minimize the damage to the patterned mask features. For example, cleaning processes were optimized to minimize Chrome & quartz damage while retaining the cleaning effectiveness. In addition, mask design rules were developed which ensured manufacturability. The narrow Chrome regions between the zero and Pi apertures severely restrict the tolerance for the placement of the second level resists edges with respect to the first level. UV Laser Writer based resist patterning capability, capable of providing the required Overlay tolerance, was developed, An AIMS based methodology was used to optimize the undercut and minimize the aerial image CD difference between the Zero and Pi apertures.

  2. Tunable aqueous polymer-phase impregnated resins-technology-a novel approach to aqueous two-phase extraction.

    Science.gov (United States)

    van Winssen, F A; Merz, J; Schembecker, G

    2014-02-14

    Aqueous Two-Phase Extraction (ATPE) represents a promising unit operation for downstream processing of biotechnological products. The technique provides several advantages such as a biocompatible environment for the extraction of sensitive and biologically active compounds. However, the tendency of some aqueous two-phase systems to form intensive and stable emulsions can lead to long phase separation times causing an increased footprint for the required mixer-settler devices or the need for additional equipment such as centrifuges. In this work, a novel approach to improve ATPE for downstream processing applications called 'Tunable Aqueous Polymer-Phase Impregnated Resins' (TAPPIR(®))-Technology is presented. The technology is based on the immobilization of one aqueous phase inside the pores of a solid support. The second aqueous phase forms the bulk liquid around the impregnated solids. Due to the immobilization of one phase, phase emulsification and phase separation of ATPE are realized in a single step. In this study, a biodegradable and sustainable aqueous two-phase system consisting of aqueous polyethylene glycol/sodiumcitrate solutions was chosen. The impregnation of different macroporous glass and ceramic solids was investigated and could be proven to be stable. Additionally, the separation of the dye Patent blue V was successfully performed with the TAPPIR(®)-Technology. Thus, the "proof of principle" of this technology is presented.

  3. HOT ELLY technology phase IIIa. HOT ELLY Technologie Phase IIIa; Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Erdle, E.; Heitzer, J.; Oehmichen, I.; Schamm, R.; Spaeh, R.; Stolten, D.

    1993-05-01

    The essential objectives of the project were - the development of a technological basis for a high power density stack and module concept with a superior to the tubular units pursued so far, - inclusion of the reverse process to the initial development focus of high temperature steam electrolysis HOT ELLY, i.e. the direct power generation from combustible gases by the sofc (solid oxide fuel cell). As a result of extensive investigations a planar cross-flow design was chosen as a guiding line. For its realisation the materials were further developed and optimized on the basis of the results of former phases of the HOT ELLY technology program. For the manufacture of planar components key technologies were elaborated as e.g. casting, lamination and sintering of ceramic tapes. Additionally processes for the joining of cell stacks as well as components for the gas manifolding of stacks were developed. Laboratory scale stacks of up to five cells with an area of 50x50mm[sup 2] successfully absolved long term tests in the electrolysis and sofc operation mode and verified the high power density of the planar design. Sofc-operation with methane as a fuel as well as the high potential with respect to efficiency were demonstrated. Process engineering investigations of sofc-power plants revealed that efficiencies of power generation significantly above 60% are achievable and good perspectives with respect to economic viability of sofc-systems exist. (orig.). 10 tabs., 125 figs.

  4. [Nasal submicron emulsion of Scutellariae Radix extract preparation technology research based on phase transfer of solute technology].

    Science.gov (United States)

    Shi, Ya-jun; Shi, Jun-hui; Chen, Shi-bin; Yang, Ming

    2015-07-01

    Based on the demand of nasal drug delivery high drug loadings, using the unique phase transfer of solute, integrating the phospholipid complex preparation and submicron emulsion molding process of Scutellariae Radix extract, the study obtained the preparation of the high drug loadings submicron emulsion of Scutellariae Radix extract. In the study of drug solution dispersion method, the uniformity of drug dispersed as the evaluation index, the traditional mixing method, grinding, homogenate and solute phase transfer technology were investigated, and the solute phase transfer technology was adopted in the last. With the adoption of new technology, the drug loading capacity reached 1.33% (phospholipid complex was 4%). The drug loading capacity was improved significantly. The transfer of solute method and timing were studied as follows,join the oil phase when the volume of phospholipid complex anhydrous ethanol solution remaining 30%, the solute phase transfer was completed with the continued recycling of anhydrous ethanol. After drug dissolved away to oil phase, the preparation technology of colostrum was determined with the evaluation index of emulsion droplet form. The particle size of submicron emulsion, PDI and stability parameters were used as evaluation index, orthogonal methodology were adopted to optimize the submicron emulsion ingredient and main influential factors of high pressure homogenization technology. The optimized preparation technology of Scutellariae Radix extract nasal submicron emulsion is practical and stable.

  5. Emerging Communication Technologies (ECT) Phase 3 Final Report

    Science.gov (United States)

    Bastin, Gary L.; Harris, William G.; Bates, Lakesha D.; Nelson, Richard A.

    2004-01-01

    The Emerging Communication Technology (ECT) project investigated three First Mile communication technologies in support of NASA s Second Generation Reusable Launch Vehicle (2nd Gen RLV), Orbital Space Plane, Advanced Range Technology Working Group (ARTWG) and the Advanced Spaceport Technology Working Group (ASTWG). These First Mile technologies have the purpose of interconnecting mobile users with existing Range Communication infrastructures. ECT was a continuation of the Range Information System Management (RISM) task started in 2002. RISM identified the three advance communication technologies investigated under ECT. These were Wireless Ethernet (Wi-Fi), Free Space Optics (FSO), and Ultra Wideband (UWB). Due to the report s size, it has been broken into three volumes: 1) Main Report 2) Appendices 3) UWB.

  6. Phase plate technology for laser marking of magnetic discs

    Science.gov (United States)

    Neuman, B.; Honig, J.; Hackel, L.; Dane, C.B.; Dixit, S.

    1998-10-27

    An advanced design for a phase plate enables the distribution of spots in arbitrarily shaped patterns with very high uniformity and with a continuously or near-continuously varying phase pattern. A continuous phase pattern eliminates large phase jumps typically expected in a grating that provides arbitrary shapes. Large phase jumps increase scattered light outside of the desired pattern, reduce efficiency and can make the grating difficult to manufacture. When manufacturing capabilities preclude producing a fully continuous grating, the present design can be easily adapted to minimize manufacturing errors and maintain high efficiencies. This continuous grating is significantly more efficient than previously described Dammann gratings, offers much more flexibility in generating spot patterns and is easier to manufacture and replicate than a multi-level phase grating. 3 figs.

  7. Technology needs for the later phases of an oil spill

    Energy Technology Data Exchange (ETDEWEB)

    Goodman, R. [Innovative Ventures Ltd., Cochrane, AB (Canada)

    2007-07-01

    The phases of an oil spill response can be classified as initial response, project phase, end phase and the monitoring phase. The initial on-water phase of the response or shoreline cleanup includes the development of contingency planning, stockpiling of equipment and research into response equipment for removing oil on water. Lack of planning for a response can lead to an initial response that has less than satisfactory results. An initial assessment of the oil spill response begins at the moment the spill occurs and continues for days, depending on the quality of the initial response. This phase includes the use of booms, skimmers, dispersants and in-situ burning. It was emphasized that oil spill research should focus on gathering scientific information needed to make decisions during the project phase and beyond. Typically, this will involve the study of long-term impacts and should be undertaken in a research environment in order to apply new data to any spill scenario. This paper highlighted knowledge needs to support decisions in the cleanup phase. The Exxon Valdez incident provided information on the long-term impacts of a variety of cleanup techniques. This paper also addressed damage assessment and restoration issues along with the decision to terminate a response. Once a response has been terminated, long-term monitoring of the ecosystem begins in order to identify the spill impact. 9 refs., 6 figs.

  8. Avionics Technology Contract Project Report Phase I with Research Findings.

    Science.gov (United States)

    Sappe', Hoyt; Squires, Shiela S.

    This document reports on Phase I of a project that examined the occupation of avionics technician, established appropriate committees, and conducted task verification. Results of this phase provide the basic information required to develop the program standards and to guide and set up the committee structure to guide the project. Section 1…

  9. Generating technology assessment. Phase I work plan, Task 1 report

    Energy Technology Data Exchange (ETDEWEB)

    1979-10-15

    A plan of work outlining information to assess electric generating technologies is presented. Projections are made of realistic and understandable engineering and cost assessments of nonnuclear electrical generating technologies. A computer-based method of producing such engineering and cost estimates for use by EIA's Coal and Electric Power Analysis Division is to be developed and implemented. Technologies and processes to be assessed are: all nonnuclear conventional and nonconventional (coal gasification, advanced combustion turbines, atmospheric fluidized bed combustion, fuel cells, geothermal, solar thermal and photovoltaics, biomass conversion to electricity, ocean thermal, wind, and MHD). Engineering specifications recommended for determination are listed. Compatibility of the technologies are to be assessed with EIA models: MEFS, LEAP, and NCM.

  10. Enabling Technologies for Direct Detection Optical Phase Modulation Formats

    Science.gov (United States)

    Xu, Xian

    Phase modulation formats are believed to be one of the key enabling techniques for next generation high speed long haul fiber-optic communication systems due to the following main advantages: (1) with a balanced detection, a better receiver sensitivity over conventional intensity modulation formats, e.g., a ˜3-dB sensitivity improvement using differential phase shift keying (DPSK) and a ˜1.3-dB sensitivity improvement using differential quadrature phase shift keying (DQPSK); (2) excellent robustness against fiber nonlinearities; (3) high spectrum efficiency when using multilevel phase modulation formats, such as DQPSK. As the information is encoded in the phase of the optical field, the phase modulation formats are sensitive to the phase-related impairments and the deterioration induced in the phase-intensity conversion. This consequently creates new challenging issues. The research objective of this thesis is to depict some of the challenging issues and provide possible solutions. The first challenge is the cross-phase modulation (XPM) penalty for the phase modulated channels co-propagating with the intensity modulated channels. The penalty comes from the pattern dependent intensity fluctuations of the neighboring intensity modulated channels being converted into phase noise in the phase modulation channels. We propose a model to theoretically analyze the XPM penalty dependence on the walk off effect. From this model, we suggest that using fibers with large local dispersion or intentionally introducing some residual dispersion per span would help mitigate the XPM penalty. The second challenge is the polarization dependent frequency shift (PDf) induced penalty during the phase-intensity conversion. The direct detection DPSK is usually demodulated in a Mach-Zehnder delay interferometer (DI). The polarization dependence of DI introduces a PDf causing a frequency offset between the laser's frequency and the transmissivity peak of DI, degrading the demodulated DPSK

  11. Study of ultrasonic phased array inspection imaging technology for NDT

    Institute of Scientific and Technical Information of China (English)

    Shan Baohua; Duan Zhongdong; Ou Jinping

    2006-01-01

    A research about the ultrasonic phased array imaging principle from A-scan signal to B-scan image for nondestructive testing (NDT) was conducted in this paper, the ultrasonic phased array inspection imaging system used in industrial field was developed and the experiment was performed on the steel testing block by the system with 64 elements, 5MHz phased array transducer.Experimental results show that the flaws could be accurately detected and the flaws size could be estimated from the B-scan images, and the B-scan images could clearly show the location of the flaws, but the quality of Bscan images needs to be enhanced by digital signal processing and controlling dynamic focusing for improving the image resolution.

  12. Technology Transfer at Edgar Mine: Phase 1; October 2016

    Energy Technology Data Exchange (ETDEWEB)

    Augustine, Chad R [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Bauer, Stephen [Sandia National Laboratory; Nakagawa, Masami [Colorado School of Mines; Zhou, Wendy [Colorado School of Mines

    2017-09-14

    The objective of this project is to study the flow of fluid through the fractures and to characterize the efficiency of heat extraction (heat transfer) from the test rock mass in the Edgar Mine, managed by Colorado School of Mines in Idaho Springs, CO. The experiment consists of drilling into the wall of the mine and fracturing the rock, characterizing the size and nature of the fracture network, circulating fluid through the network, and measuring the efficiency of heat extraction from the 'reservoir' by monitoring the temperature of the 'produced' fluid with time. This is a multi-year project performed as a collaboration between the National Renewable Energy Laboratory, Colorado School of Mines and Sandia National Laboratories and carried out in phases. This report summarizes Phase 1: Selection and characterization of the location for the experiment, and outlines the steps for Phase 2: Circulation Experiments.

  13. Research of Hybrid Three-phase equilibrium Technology

    Science.gov (United States)

    Xu, K.; Liu, Z. Z.; Qi, G. Z.; Hou, Y. J.

    2016-08-01

    This paper puts forward a kind of managerial method based on the combination of PPF (passive power filter) and APF (active power filter) for the problem of three-phase current balance in three-phase four-wire system. This method uses two special reactors to filter zero- sequence current and uses APF to filter negative-sequence fundamental current, positive- sequence and negative-sequence harmonic current. It is more effective, reliable and economic. This paper proves feasibility of the method by the simulation results.

  14. Phase Change Permeation Technology for Environmental Control & Life Support Systems Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This project will explore a recent advancement in Phase Change Permeation™ technology to enable improved (1) water recovery from urine/brine for Environmental...

  15. RF photonics technology for phased array antenna applications

    NARCIS (Netherlands)

    Meijerink, A.; Roeloffzen, C.G.H.; Marpaung, D.A.I.; Zhuang, L.; Etten, van W.C.; Leinse, A.; Hoekman, M.; Heideman, R.G.

    2008-01-01

    One of the key research topics of the Telecommunication Engineering (TE) Group at the University of Twente (UT) is RF Photonics. The aim of this field is to develop schemes that utilize the advantages of optical technology for performing RF functions in wireless communication systems. Examples of su

  16. Early phase Technology Assessment of nanotechnology in oncology

    NARCIS (Netherlands)

    Retèl, Valesca P.; Hummel, Marjan J.M.; Harten, van Willem H.

    2008-01-01

    To perform early Technology Assessment (TA) of nanotechnology in oncology. The possibilities of nanotechnology for detection (imaging), diagnosis and treatment of cancer are subject of different research programs where major investments are concerned. As a range of bio- nanotechnologies is expected

  17. Assessment of the Vapor Phase Catalytic Ammonia Removal (VPCAR) Technology at the MSFC ECLS Test Facility

    Science.gov (United States)

    Tomes, Kristin; Long, David; Carter, Layne; Flynn, Michael

    2007-01-01

    The Vapor Phase Catalytic Ammonia. Removal (VPCAR) technology has been previously discussed as a viable option for. the Exploration Water Recovery System. This technology integrates a phase change process with catalytic oxidation in the vapor phase to produce potable water from exploration mission wastewaters. A developmental prototype VPCAR was designed, built and tested under funding provided by a National Research. Announcement (NRA) project. The core technology, a Wiped Film Rotating Device (WFRD) was provided by Water Reuse Technologies under the NRA, whereas Hamilton Sundstrand Space Systems International performed the hardware integration and acceptance test. of the system. Personnel at the-Ames Research Center performed initial systems test of the VPCAR using ersatz solutions. To assess the viability of this hardware for Exploration. Life Support (ELS) applications, the hardware has been modified and tested at the MSFC ECLS Test facility. This paper summarizes the hardware modifications and test results and provides an assessment of this technology for the ELS application.

  18. Phase Change Permeation Technology For Environmental Control Life Support Systems

    Science.gov (United States)

    Wheeler, Raymond M.

    2014-01-01

    Use of a phase change permeation membrane (Dutyion [Trademark]) to passively and selectively mobilize water in microgravity to enable improved water recovery from urine/brine for Environment Control and Life Support Systems (ECLSS) and water delivery to plans for potential use in microgravity.

  19. Training Technology Handbook Development. Phase I. Annotated Literature Review.

    Science.gov (United States)

    1981-08-01

    technology handbook that will assist systems acquisition and training managers in forecasting training system course requirements. " -’ The contracting...DTIC TAB ] " Unannounced " Just if icatiorl. D stribultion/ ’ OSTI\\Iv1ai~t ce Dist Spoc l iiiV...iteration in this process is due to the large interactions between methods/media specification, instructional block and course allocation, and system

  20. Socioeconomic Impact Assessment: Communications Industry. Phase III. Technology Forecast.

    Science.gov (United States)

    1979-02-02

    follows: stagflation, balanced growth, rapid growth. That is, it requires less time to move from ideation to market introduction under a rapid growth...consider the relative relationship among the socio-economic scenarios. The assertions of import include: 1. The period between ideation and market ... introduction for a technology is influenced by the socio-economic scenario. It is likely that the time requirement, i.e. innovation lag, will be ordered as

  1. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, FRANCE COMPRESSOR PRODUCTS EMISSIONS PACKING, PHASE I REPORT

    Science.gov (United States)

    The report presents results of a Phase I test of emissions packing technology offered by France Compressor Products which is designed to reduce methane leaks from compressor rod packing when a compressor is in a standby and pressurized state. This Phase I test was executed betwee...

  2. Emerging Communication Technologies (ECT) Phase 2 Report. Volume 3; Ultra Wideband (UWB) Technology

    Science.gov (United States)

    Bastin, Gary L.; Harris, William G.; Chiodini, Robert; Nelson, Richard A.; Huang, PoTien; Kruhm, David A.

    2003-01-01

    The Emerging Communication Technology (ECT) project investigated three First Mile communication technologies in support of NASA s Second Generation Reusable Launch Vehicle (2nd Gen RLV), Orbital Space Plane, Advanced Range Technology Working Group (ARTWG) and the Advanced Spaceport Technology Working Group (ASTWG). These First Mile technologies have the purpose of interconnecting mobile users with existing Range Communication infrastructures. ECT was a continuation of the Range Information System Management (RISM) task started in 2002. RISM identified the three advance communication technologies investigated under ECT. These were Wireless Ethernet (Wi-Fi), Free Space Optics (FSO), and Ultra Wideband (UWB). Due to the report s size, it has been broken into three volumes: 1) Main Report 2) Appendices 3) UWB

  3. Technology development for phosphoric acid fuel cell powerplant (phase 2)

    Science.gov (United States)

    Christner, L.

    1979-01-01

    The status of technology for the manufacturing and testing of 1200 sq. cm cell materials, components, and stacks for on-site integrated energy systems is assessed. Topics covered include: (1) preparation of thin layers of silicon carbide; (2) definition and control schemes for volume changes in phosphoric acid fuel cells; (3) preparation of low resin content graphite phenolic resin composites; (4) chemical corrosion of graphite-phenolic resin composites in hot phosphoric acid; (5) analysis of electrical resistance of composite materials for fuel cells; and (6) fuel cell performance and testing.

  4. R&D activities of tritium technologies on Broader Approach in Phase 2-2

    Energy Technology Data Exchange (ETDEWEB)

    Isobe, Kanetsugu, E-mail: isobe.kanetsugu@jaea.go.jp; Kawamura, Yoshinori; Iwai, Yasunori; Oyaidzu, Makoto; Nakamura, Hirofumi; Suzuki, Takumi; Yamada, Masayuki; Edao, Yuki; Kurata, Rie; Hayashi, Takumi; Yamanishi, Toshihiko

    2015-10-15

    Highlights: • R&D activities of tritium technology on BA were introduced. • Representative results in each task were explained. • Future plan of this activity was introduced. - Abstract: Activities on Broader Approach (BA) were started in 2007. In Phase 2-2, many R&Ds, development of tritium accountancy technology, development of basic tritium safety research and tritium durability test, were implemented successfully by JAEA and Japanese Universities. In Phase 2-3, new collaborative study for tritium measurement and new R&D activities for JET ILW are started. R&D activities on BA have continued in Phase 2-3 (2014–2016).

  5. Informing Early-Phase Technology Decisions in Paradigmatic Innovation

    DEFF Research Database (Denmark)

    Jensen, Ole Kjeldal; Ahmed-Kristensen, Saeema

    2010-01-01

    & gas, production & trade of electricity and sales & distribution to end-costumers. Their agenda is to shift from 15% sustainable energy and 85% fossil energy to 85% sustainable within 25 years. At the same time, their business model has changed from energy planning to business development, thus...... been initiated, with the purpose of generating an extensive understanding of the decision-making process related to assessing new technologies when designing radically new products and services for the market. It is expected that this understanding will enable further development of methods to improve...... these decisions, was carried out. The investigation is based primarily on document analysis, interviews and observations which were carried out at the collaborating company, and the results are presented in this article....

  6. Matrix phased array (MPA) imaging technology for resistance spot welds

    Energy Technology Data Exchange (ETDEWEB)

    Na, Jeong K.; Gleeson, Sean T. [Edison Welding Institute, 1250 Arthur E. Adams Drive, Columbus, OH 43221 (United States)

    2014-02-18

    A three-dimensional MPA probe has been incorporated with a high speed phased array electronic board to visualize nugget images of resistance spot welds. The primary application area of this battery operated portable MPA ultrasonic imaging system is in the automotive industry which a conventional destructive testing process is commonly adopted to check the quality of resistance spot welds in auto bodies. Considering an average of five-thousand spot welds in a medium size passenger vehicle, the amount of time and effort given to popping the welds and measuring nugget size are immeasurable in addition to the millions of dollars' worth of scrap metals recycled per plant per year. This wasteful labor intensive destructive testing process has become less reliable as auto body sheet metal has transitioned from thick and heavy mild steels to thin and light high strength steels. Consequently, the necessity of developing a non-destructive inspection methodology has become inevitable. In this paper, the fundamental aspects of the current 3-D probe design, data acquisition algorithms, and weld nugget imaging process are discussed.

  7. MHD coal combustor technology. Final report, phase II

    Energy Technology Data Exchange (ETDEWEB)

    1980-09-01

    The design, performance, and testing of a 20-MW coal combustor for scaleup to 50 MW for use in an MHD generator are described. The design incorporates the following key features: (1) a two-stage combustor with an intermediate slag separator to remove slag at a low temperture, thus minimizing enthalpy losses required for heating and vaporizing the slag; (2) a first-stage pentad (four air streams impinging on one coal stream) injector design with demonstrated efficient mixing, promoting high carbon burnout; (3) a two-section first-stage combustion chamber; the first stage using a thin slag-protected refractory layer and the second section using a thick refractory layer, both to minimize heat losses; (4) a refractory lining in the slag separator to minimize heat losses; (5) a second-stage combustor, which provided both de-swirl of the combustion products exiting from the slag separator and simple mixing of the vitiated secondary air and seed; (6) a dense-phase coal feed system to minimize cold carrier gas entering the first-stage combustors; (7) a dry seed injection system using pulverized K/sub 2/CO/sub 3/ with a 1% amorphous, fumed silicon dioxide additive to enhance flowability, resulting in rapid vaporization and ionization and ensuring maximum performance; and (8) a performance evaluation module (PEM) of rugged design based on an existing, successfully-fired unit. (WHK)

  8. Flexible Electrostatic Technologies for Capture and Handling, Phase 1

    Science.gov (United States)

    Bryan, Thomas

    2015-01-01

    Fundamental to many of NASA's in-space transportation missions is the capture and handling of various objects and vehicles in various orbits for servicing, debris disposal, sample retrieval, and assembly without the benefit of sufficient grapple fixtures and docking ports. To perform similar material handling tasks on Earth, pincher grippers, suction grippers, or magnetic chucks are used, but are unable to reliably grip aluminum and composite spacecraft, insulation, radiators, solar arrays, or extra-terrestrial objects in the vacuum of outer space without dedicated handles in the right places. The electronic Flexible Electrostatic Technologies for space Capture and Handling (FETCH) will enable reliable and compliant gripping (soft dock) of practically any object in various orbits or surfaces without dedicated mechanical features, very low impact capture, and built-in proximity sensing without any conventional actuators. Originally developed to handle semiconductor and glass wafers during vacuum chamber processing without contamination, the normal rigid wafer handling chucks are replaced with thin metal foil segments laminated in flexible insulation driven by commercial off-the-shelf solid state, high-voltage power supplies. Preliminary testing in NASA Marshall Space Flight Center's (MSFC's) Flat Floor Robotics Lab demonstrated compliant alignment and gripping with a full-sized, 150-lb microsat mockup and translation before a clean release with a flip of a switch. The flexible electrostatic gripper pads can be adapted to various space applications with different sizes, shapes, and foil electrode layouts even with openings through the gripper pads for addition of guidance sensors or injection of permanent adhesives. With gripping forces estimated between 0.5 and 2.5 lb/in2 or 70-300 lb/ft2 of surface contact, the FETCH can turn on and off rapidly and repeatedly to enable sample handling, soft docking, in-space assembly, precision relocation, and surface translation

  9. Dual-frequency grating method based research on phase measurement profilometry (PMP) technology

    Science.gov (United States)

    Wang, Binbin; Liang, Yijun; Deng, Hu

    2014-11-01

    With more than three decades of development, three-dimensional optical measurement technology has reached a mature stage in commercial applications, meanwhile new ones have continually arisen. Due to the development of Charge Coupled Device (CCD) array camera and digital projection technology, the applications of Phase Measurement Profilometry (PMP) become more and more broad. Among these, dual-frequency grating method has drawn many attentions because of its simplicity in principle and optical path, low requirement of equipment, high accuracy and level of automation comparing with other methods. The phase calculation is one of the key technologies in PMP. However, phase unwrapping algorithm in PMP is a difficult issue. A lot of new algorithm have been proposed, but neither one can solve all the problems, so how to set up new phase unwrapping algorithm becomes urgent. In this chapter, we systematically investigate the phase unwrapping method in dual-frequency grating method, and experimentally set up the system. To verify our method, we experimentally measure a three dimensional object which possesses complicated stair shapes on its surface. The results show that our dual-frequency grating method could achieve phase unwrapping without doing conventional phase unwrapping calculations, and it could also detect the detailed stair shapes on the surface of this three dimensional object automatically.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2015-02-15

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

  11. Enabling Computational Technologies for the Accurate Prediction/Description of Molecular Interactions in Condensed Phases

    Science.gov (United States)

    2014-10-08

    models to compute accurately the molecular interactions between a mobile or stationary phase and a target substrate or analyte , which are fundamental...mobile or stationary phase and a target substrate or analyte , which are fundamental to diverse technologies, e.g., sensor or separation design. With...D. G., New Orleans, LA, April 9, 2013. 223rd Electrochemical Society Meeting, Continuum Solvation Models for Computational Electrochemistry

  12. Global Air Mobility Advanced Technologies (GAMAT) Advanced Technology Development (ATD) Phase II Research and Development

    Science.gov (United States)

    2004-05-01

    chapter will begin with an overview of the focal topics we selected for design intervention generally, and then proceed to a discussion of how we...chapter will begin with an overview of the focal topics we selected for design intervention , then proceed to a discussion of the specific design concepts...GAMAT KA work and (b) judged relevant to our Phase II focus on flight planning. Some of these items are indicative of problems for which WCSS design

  13. Phase 2 cost quality management assessment report for the Office of Technology Development (EM-50)

    Energy Technology Data Exchange (ETDEWEB)

    1994-08-01

    The Office of Environmental Management (EM) Head quarters (HQ) Cost Quality Management Assessment (CQMA) evaluated the practices of the Office of Technology Development (EM-50). The CQMA reviewed EM-50 management documents and reported results in the HQ CQMA Phase 1 report (March 1993). In this Assessment Phase, EM-50 practices were determined through interviews with staff members. The interviews were conducted from the end of September through early December 1993. EM-50 management documents (Phase 1) and practices (Phase 2) were compared to the Performance Objectives and Criteria (POCs) contained in the DOE/HQ Cost Quality Management Assessment Handbook. More detail on the CQMA process is provided in section 2. Interviewees are listed in appendix A. Documents reviewed during Phase 2 are listed in appendix B. Section 3 contains detailed observations, discussions, and recommendations. A summary of observations and recommendations is presented.

  14. Phased array ultrasonic technology contribution to engineering critical assessment (ECA) of economizer piping welds

    Energy Technology Data Exchange (ETDEWEB)

    Ciorau, P.; Gray, D.; Daks, W. [Ontario Power Generation, Pickering, Ontario (Canada)]. E-mail: peter.ciorau@opg.com

    2006-09-15

    This paper describes the application of phased array ultrasonic technology for engineering critical assessment of economizer piping welds. The objective is to detect and size fatigue cracks in the counter bore area of carbon steel boiler feedwater piping welds of a thermal station. A size accuracy of {+-} 1 mm for the outer ligament was required.

  15. Development of a Hydrologic Characterization Technology for Fault Zones Phase II 2nd Report

    Energy Technology Data Exchange (ETDEWEB)

    Karasaki, Kenzi [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Doughty, Christine [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Gasperikova, Erika [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Peterson, John [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Conrad, Mark [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Cook, Paul [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Tiemi, Onishi [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2011-03-31

    This is the 2nd report on the three-year program of the 2nd phase of the NUMO-LBNL collaborative project: Development of Hydrologic Characterization Technology for Fault Zones under NUMO-DOE/LBNL collaboration agreement. As such, this report is a compendium of the results by Kiho et al. (2011) and those by LBNL.

  16. Technology Reinvestment Program/Advanced ``Zero Emission'' Control Valve (Phase II)

    Energy Technology Data Exchange (ETDEWEB)

    J. Napoleon

    1998-12-01

    The objectives of this effort are to determine, develop and demonstrate the feasibility of significantly reducing the cost and expanding the applications for a family of Advanced Zero Emissions Control Valves that meets the fugitive emissions requirements of the 1990 Amendments to the Clean Air Act. This program is a direct technology spin-off from the valve technology that is critical to the US Navy's Nuclear Powered Fleet. These zero emissions valves will allow the Hydrocarbon and Chemical Processing Industries, etc., to maintain their competitiveness and still meet environmental and safety requirements. Phase 2 is directed at refining the basic technologies developed during Phase 1 so that they can be more readily selected and utilized by the target market. In addition to various necessary certifications, the project will develop a full featured digital controller with ``smart valve'' growth capability, expanding valve sizes/applications and identifying valve materials to permit applications in severe operational environments.

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

    Science.gov (United States)

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

    2007-12-01

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

  18. Structures and Design Phase I Summary for the NASA Composite Cryotank Technology Demonstration Project

    Science.gov (United States)

    Johnson, Ted; Sleight, David W.; Martin, Robert A.

    2013-01-01

    A description of the Phase I structures and design work of the Composite Cryotank Technology Demonstration (CCTD) Project is in this paper. The goal of the CCTD Project in the Game Changing Development (GCD) Program is to design and build a composite liquid-hydrogen cryogenic tank that can save 30% in weight and 25% in cost compared to state-of-the-art aluminum metallic cryogenic tank technology when the wetted composite skin wall is at an allowable strain of 5000 in/in. Three Industry teams developed composite cryogenic tank concepts that are compared for weight to an aluminum-lithium (Al-Li) cryogenic tank designed by NASA in Phase I of the CCTD Project. The requirements used to design all of the cryogenic tanks in Phase I will be discussed and the resulting designs, analyses, and weight of the concepts developed by NASA and Industry will be reviewed and compared.

  19. X-band 5-bit MMIC phase shifter with GaN HEMT technology

    Science.gov (United States)

    Sun, Pengpeng; Liu, Hui; Zhang, Zongjing; Geng, Miao; Zhang, Rong; Luo, Weijun

    2017-10-01

    The design approach and performance of a 5-bit digital phase shifter implemented with 0.25 μm GaN HEMT technology for X-band phased arrays are described. The switched filter and high-pass/low-pass networks are proposed in this article. For all 32 states of the 5-bit phase shifter, the RMS phase error less than 5.5°, RMS amplitude error less than 0.8 dB, insertion loss less than 12 dB and input/output return loss less than 8.5 dB are obtained overall 8-12 GHz. The continuous wave power capability is also measured, and a typical input RF P1dB data of 32 dBm is achieved at 8 GHz.

  20. Development of phase change materials based microencapsulated technology for buildings: A review

    Energy Technology Data Exchange (ETDEWEB)

    Tyagi, V.V.; Kaushik, S.C. [Centre for Energy Studies, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016 (India); Tyagi, S.K. [School of Infrastructure Technology and Resource Management, Shri Mata Vaishno Devi University, Katra 182320, J and K (India); Akiyama, T. [Center for Advanced Research of Energy Conversion Materials, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo 060-86283 (Japan)

    2011-02-15

    Thermal energy storage (TES) systems using phase change material (PCM) have been recognized as one of the most advanced energy technologies in enhancing the energy efficiency and sustainability of buildings. Now the research is focus on suitable method to incorporate PCMs with building. There are several methods to use phase change materials (PCMs) in thermal energy storage (TES) for different applications. Microencapsulation is one of the well known and advanced technologies for better utilization of PCMs with building parts, such as, wall, roof and floor besides, within the building materials. Phase change materials based microencapsulation for latent heat thermal storage (LHTS) systems for building application offers a challenging option to be employed as effective thermal energy storage and a retrieval device. Since the particular interest in using microencapsulation PCMs for concrete and wall/wallboards, the specific research efforts on both subjects are reviewed separately. This paper presents an overview of the previous research work on microencapsulation technology for thermal energy storage incorporating the phase change materials (PCMs) in the building applications, along with few useful conclusive remarks concluded from the available literature. (author)

  1. Emerging technologies and approaches to minimize discharges into Lake Michigan Phase 2, Module 3 report.

    Energy Technology Data Exchange (ETDEWEB)

    Negri, M. C.; Gillenwater, P.; Urgun Demirtas, M. (Energy Systems)

    2011-05-11

    Purdue University Calumet (Purdue) and Argonne National Laboratory (Argonne) have conducted an independent study to identify deployable technologies that could help the BP Whiting Refinery, and other petroleum refineries, meet future wastewater discharge limits. This study has been funded by BP. Each organization tested a subset of the target technologies and retains sole responsibility for its respective test design and implementation, quality assurance and control, test results obtained from each of the technologies, and corresponding conclusions and recommendations. This project was divided in two phases and modules. This report summarizes the work conducted by Argonne in Phase II Module 3 (Bench Scale Testing). Other Modules are discussed elsewhere (Emerging Technologies and Approaches to Minimize Discharges into Lake Michigan, Phase 2, Modules 1-3 Report, April 2011, prepared for BP Americas by the Argonne - Purdue Task Force). The goal of this project was to identify and assess available and emerging wastewater treatment technologies for removing mercury and vanadium from the Whiting Refinery wastewater and to conduct bench-scale tests to provide comparable, transparent, and uniform results across the broad range of technologies tested. After the bench-scale testing phase, a previously developed decision matrix was refined and applied by Argonne to process and review test data to estimate and compare the preliminary performance, engineering configuration, preliminary cost, energy usage, and waste generation of technologies that were shown to be able to remove Hg and/or V to below the target limit at the bench scale. The data were used as the basis to identify the best candidates for further testing at the bench or pilot scale on a slip stream of effluent to lake (ETL) or clarifier effluent (CE) at the Whiting Refinery to determine whether future limits could be met and to generate other pertinent data for scale-up and sustainability evaluation. As a result of

  2. UTILITY ADVANCED TURBINE SYSTEMS (ATS) TECHNOLOGY READINESS TESTING: PHASE 3R

    Energy Technology Data Exchange (ETDEWEB)

    None

    1999-09-01

    The overall objective of the Advanced Turbine System (ATS) Phase 3 Cooperative Agreement between GE and the US Department of Energy (DOE) is the development of the GE 7H and 9H combined cycle power systems. The major effort will be expended on detail design. Validation of critical components and technologies will be performed, including: hot gas path component testing, sub-scale compressor testing, steam purity test trials, and rotational heat transfer confirmation testing. Processes will be developed to support the manufacture of the first system, which was to have been sited and operated in Phase 4 but will now be sited and operated commercially by GE. This change has resulted from DOE's request to GE for deletion of Phase 4 in favor of a restructured Phase 3 (as Phase 3R) to include full speed, no load (FSNL) testing of the 7H gas turbine. Technology enhancements that are not required for the first machine design but will be critical for future ATS advances in performance, reliability, and costs will be initiated. Long-term tests of materials to confirm design life predictions will continue. A schematic of the GE H machine is shown. This report summarizes work accomplished in 2Q99.

  3. A 1V Phase Frequency Detector (PFD with 180nm CMOS Technology

    Directory of Open Access Journals (Sweden)

    N . K . Kaphungkui

    2013-02-01

    Full Text Available In this paper, designing of a Phase frequency detector with 180nm CMOS technology is presented. The main objective of the designed circuit is to reduce the power dissipation with a low voltage supply of 1V. Phase frequency detector has a wide range of applications but one of the main application is in modern day phased locked loop, it serve as a main building block. PFD (Phase Frequency Detector is a circuit that measures the phase and frequency difference between two signals, and has two outputs UP and DOWN which are signalled according to the phase and frequency difference of the two input signals. The designed circuit shows a satisfactory result with the low supply voltage. The detection of phase difference occurs only at the rising edge of the two clock signal. The total power dissipation from the circuit is only 3.88uW which is considerably low. In the field of IC design power dissipation of the circuit is always an important factor. The lower the power dissipation the longer the service time of the battery powered electronics circuit

  4. Engineering Life into Technology: the Application of Complexity Theory to a Potential Phase Transition in Intelligence

    Directory of Open Access Journals (Sweden)

    Melanie Swan

    2010-02-01

    Full Text Available Information optimization is a centerpiece phenomenon in the universe. It develops from simplicity, then continuously breaks symmetry and cycles through instability to progress to increasingly dense nodes of complexity and diversity. Intelligence has arisen as the information optimization node with the greatest complexity. A contemporary imbalance is presented in that exponentially growing technology could be poised as a potential sole successor to human intelligence. A complex dynamical system is emerging in response, the engineering of life into technology. Numerous network elements are developing which could self-organize into the next node of symmetry, a phase transition in intelligence.

  5. IFMIF (International Fusion Materials Irradiation Facility) key element technology phase interim report

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, Hiroo; Ida, Mizuho; Sugimoto, Masayoshi; Takeuchi, Hiroshi; Yutani, Toshiaki (eds.) [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    2002-03-01

    Activities of International Fusion Materials Irradiation Facility (IFMIF) have been performed under an IEA collaboration since 1995. IFMIF is an accelerator-based deuteron (D{sup +})-lithium (Li) neutron source designed to produce an intense neutron field (2 MW/m{sup 2}, 20 dpa/year for Fe) in a volume of 500 cm{sup 3} for testing candidate fusion materials. In 2000, a 3 year Key Element technology Phase (KEP) of IFMIF was started to reduce the key technology risk factors. This interim report summarizes the KEP activities until mid 2001 in the major project work-breakdown areas of accelerator, target, test facilities and design integration. (author)

  6. Phase I Field Test Results of an Innovative DNAPL Remediation Technology: The Hydrophobic Lance

    Energy Technology Data Exchange (ETDEWEB)

    Tuck, D.M.

    1999-01-28

    An innovative technology for recovery of pure phase DNAPL was deployed in the subsurface near the M-Area Settling Basin, continuing the support of the A/M Area Ground Water Corrective Action Program (per Part B requirements). This technology, the Hydrophobic Lance, operates by placing a neutral/hydrophobic surface (Teflon) in contact with the DNAPL. This changes the in situ conditions experienced by the DNAPL, allowing it to selectively drain into a sump from which it can be pumped. Collection of even small amounts of DNAPL can save years of pump-and-treat operation because of the generally low solubility of DNAPL components.

  7. Rigid Polyurethane Foam (RPF) Technology for Countermines (Sea) Program Phase II

    Energy Technology Data Exchange (ETDEWEB)

    WOODFIN,RONALD L.; FAUCETT,DAVID L.; HANCE,BRADLEY G.; LATHAM,AMY E.; SCHMIDT,C.O.

    1999-10-01

    This Phase II report documents the results of one subtask initiated under the joint Department of Energy (DOE)/Department of Defense (DoD) Memorandum of Understanding (MOU) for Countermine Warfare. The development of Rigid Polyurethane Foams for neutralization of mines and barriers in amphibious assault was the objective of the tasking. This phase of the program concentrated on formation of RPF in water, explosive mine simulations, and development of foam and fabric pontoons. Field experimentation was done primarily at the Energetic Materials Research and Testing Center (EMRTC) of the New Mexico Institute of Mining and Technology, Socorro, NM between February 1996 and September 1998.

  8. Application of Ultrasonic Phased Array Technology to the Detection of Defect in Composite Stiffened-structures

    Science.gov (United States)

    Zhou, Yuan-Qi; Zhan, Li-Hua

    2016-05-01

    Composite stiffened-structure consists of the skin and stringer has been widely used in aircraft fuselage and wings. The main purpose of the article is to detect the composite material reinforced structure accurately and explore the relationship between defect formation and structural elements or curing process. Based on ultrasonic phased array inspection technology, the regularity of defects in the manufacture of composite materials are obtained, the correlation model between actual defects and nondestructive testing are established. The article find that the forming quality of deltoid area in T-stiffened structure is obviously improved by pre-curing, the defects of hat-stiffened structure are affected by the mandrel. The results show that the ultrasonic phased array inspection technology can be an effectively way for the detection of composite stiffened-structures, which become an important means to control the defects of composite and improve the quality of the product.

  9. High Integrated Microwave Architecture Using LTCC-SIP Technology in Active Phased Array Antenna Applications

    Science.gov (United States)

    Zhou, Jun; Shi, Wei; Dou, Wen-Bin; Shen, Ya

    2012-06-01

    A kind of three dimensional Low Temperature Co-fired Ceramic (LTCC)-System in Package (SIP) transition was proposed in this paper. The basic design of SIP with LTCC technology was done by vertical transitions which transmit the microwave signal from the bottom to the surface of the substrate. The measured insertion loss did not exceed 1.5 dB, which contains the insertion loss of the test board about 0.6 dB at 18 GHz and the return loss was better than-15 dB up to 18 GHz. Then this technology was applied to a kind of phase shifting and amplifier module with two output ports. Basing on this module, a miniature Ku-band active phase array antenna was realized. The design results in a small size(84.8 mm×84.8 mm×55 mm). The measured performance of systems radiation pattern was also given.

  10. Two-Phase Flow Technology Developed and Demonstrated for the Vision for Exploration

    Science.gov (United States)

    Sankovic, John M.; McQuillen, John B.; Lekan, Jack F.

    2005-01-01

    NASA s vision for exploration will once again expand the bounds of human presence in the universe with planned missions to the Moon and Mars. To attain the numerous goals of this vision, NASA will need to develop technologies in several areas, including advanced power-generation and thermal-control systems for spacecraft and life support. The development of these systems will have to be demonstrated prior to implementation to ensure safe and reliable operation in reduced-gravity environments. The Two-Phase Flow Facility (T(PHI) FFy) Project will provide the path to these enabling technologies for critical multiphase fluid products. The safety and reliability of future systems will be enhanced by addressing focused microgravity fluid physics issues associated with flow boiling, condensation, phase separation, and system stability, all of which are essential to exploration technology. The project--a multiyear effort initiated in 2004--will include concept development, normal-gravity testing (laboratories), reduced gravity aircraft flight campaigns (NASA s KC-135 and C-9 aircraft), space-flight experimentation (International Space Station), and model development. This project will be implemented by a team from the NASA Glenn Research Center, QSS Group, Inc., ZIN Technologies, Inc., and the Extramural Strategic Research Team composed of experts from academia.

  11. Introduction of information and communication technologies in havana polyclinics: phase one evaluation.

    Science.gov (United States)

    Llanusa, Susana B; Rojo, Nereida; Caraballoso, Magali; Pérez, Julia S

    2008-04-01

    Introduction Information and communication technologies were introduced in community-based polyclinics as a result of a Cuban health system policy to make information more readily accessible to health professionals and other health workers at the primary health care level. Objective Assess phase one of the Program to Introduce Information and Communication Technologies in Primary Health Care (PICT-PHC), as implemented in Havana, and in particular to determine the aspects of structure, process and outcomes with the greatest impact on this phase's effectiveness. Methods From May to October 2003, an assessment was carried out in all Havana community-based polyclinics where phase one of the Program was underway. Study dimensions, criteria, and standards were established through consultation with experts and considering the level of performance expected by program directors, thus providing timely analysis to the directors concerning problem areas in need of attention. This paper concentrates on the five dimensions which were thought to have the most bearing on effectiveness of information and communication technologies (ICTs) installed in the polyclinics' libraries: librarians' competencies in IT skills, training received by librarians, training received by users, Program monitoring and follow-up, and exploitation of the technologies. Six data collection instruments were devised. Participants in the study included 41 librarians and 544 users. Data were processed to obtain indicators corresponding to study criteria. Each indicator was then compared with the established standard. Validity of results was established through analysis and comparison. Results Overall, the first phase of the PICT-PHC in Havana succeeded in making online information resources more readily available to health professionals and technicians. Some librarians had insufficient basic IT competencies, which had an impact on the quality of their work. Moreover, it was found that monitoring and follow

  12. Evaluation of melter technologies for vitrification of Hanford site low-level tank waste - phase 1 testing summary report

    Energy Technology Data Exchange (ETDEWEB)

    Wilson, C.N., Westinghouse Hanford

    1996-06-27

    Following negotiation of the fourth amendment to the Tri- Party Agreement for Hanford Site cleanup, commercially available melter technologies were tested during 1994 and 1995 for vitrification of the low-level waste (LLW) stream to be derived from retrieval and pretreatment of the radioactive defense wastes stored in 177 underground tanks. Seven vendors were selected for Phase 1 testing to demonstrate vitrification of a high-sodium content liquid LLW simulant. The tested melter technologies included four Joule-heated melters, a carbon electrode melter, a combustion melter, and a plasma melter. Various dry and slurry melter feed preparation processes also were tested. The technologies and Phase 1 testing results were evaluated and a preliminary technology down-selection completed. This report describes the Phase 1 LLW melter vendor testing and the tested technologies, and summarizes the testing results and the preliminary technology recommendations.

  13. An Overview of SBIR Phase 2 Physical Sciences and Biomedical Technologies in Space

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.

    2015-01-01

    Technological innovation is the overall focus of NASA's Small Business Innovation Research (SBIR) program. The program invests in the development of innovative concepts and technologies to help NASA's mission directorates address critical research and development needs for agency projects. This report highlights innovative SBIR Phase II projects from 2007-2012 specifically addressing areas in physical sciences and biomedical technologies in space, which is one of six core competencies at NASA Glenn Research Center. There are twenty two technologies featured with emphasis on a wide spectrum of applications such as reusable handheld electrolyte, sensor for bone markers, wideband single crystal transducer, mini treadmill for musculoskeletal, and much more. Each article in this report describes an innovation, technical objective, and highlights NASA commercial and industrial applications. This report serves as an opportunity for NASA personnel including engineers, researchers, and program managers to learn of NASA SBIR's capabilities that might be crosscutting into this technology area. As the result, it would cause collaborations and partnerships between the small companies and NASA Programs and Projects resulting in benefit to both SBIR companies and NASA.

  14. Progress toward a general grating patterning technology using phase-locked scanning beams

    Science.gov (United States)

    Schattenburg, Mark L.; Chen, Carl G.; Heilmann, Ralf K.; Konkola, Paul T.; Pati, G. S.

    2002-01-01

    The fabrication of large high-quality diffraction gratings remains one of the most challenging tasks in optical fabrication. Traditional direct-write methods, such as diamond ruling or electron-beam lithography, can be extremely slow and result in gratings with undesired phase errors. Holographic methods, while generally resulting in gratings with smoother phase, frequently require large aspheres and lengthy optical setup in order to achieve desired period chirps. In this paper we describe a novel interference lithography method called scanning-beam interference lithography (SBIL) that utilizes small phase-locked scanning beams to write general periodic patterns onto large substrates. Small mutually coherent beams are phase controlled by high-bandwidth electro-optic components and caused to overlap and interfere, generating a small grating image. The image is raster-scanned over the substrate by use of a high-precision interferometer-controlled air bearing stage, resulting in large grating patterns. We will describe a prototype system in our laboratory designed to write gratings with extremely low phase distortion. The system is being generalized to pattern gratings with arbitrary period progressions (chirps). This technology, with extensions, will allow the rapid, low cost patterning of high-fidelity periodic patterns of arbitrary geometry on large substrates that could be of great interest to astronomers.

  15. Phase noise modeling in LC oscillators implemented in SiGe technology

    Institute of Scientific and Technical Information of China (English)

    M.Bouhouche; S.Latreche; C.Gontrand

    2013-01-01

    This paper addresses phase noise analysis of a radiofrequency LC oscillator built around a SiGe heterojunction bipolar transistor (HBT) realized in a 0.35 μm BiCMOS process,as an active device.First,we give a brief background to SiGe HBT device physics.The key point is to initiate quantitative analysis on the influence of defects induced during extrinsic base implantation on electric performances of this device.These defects are responsible for the current fluctuations at the origin of low frequency noise in BiCMOS technologies.Next,we investigate the effect of implantation defects as a source of noise in semiconductors on the phase noise of a radiofrequency LC oscillator.We observe their influence on the oscillator phase noise,and we quantify the influence of their energy distribution in the semiconductor gap.Second,we give a behavioral model of an LC oscillator containing a SiGe HBT as an active device.The key goal is to study the susceptibility of a radiofrequency oscillator built around a SiGe HBT to phase noise disturbance sources.Based on the time variance behavior of phase noise in oscillators,transient simulations (in the time domain) were used to analyze the time-dependent noise sensitivity of the oscillator.

  16. Development of a Lunar-Phase Observation System Based on Augmented Reality and Mobile Learning Technologies

    Directory of Open Access Journals (Sweden)

    Wernhuar Tarng

    2016-01-01

    Full Text Available Observing the lunar phase requires long-term involvement, and it is often obstructed by bad weather or tall buildings. In this study, a lunar-phase observation system is developed using the augmented reality (AR technology and the sensor functions of GPS, electronic compass, and 3-axis accelerometer on mobile devices to help students observe and record lunar phases easily. By holding the mobile device towards the moon in the sky, the screen will show the virtual moon at the position of the real moon. The system allows the user to record the lunar phase, including its azimuth/elevation angles and the observation date and time. In addition, the system can shorten the learning process by setting different dates and times for observation, so it can solve the problem of being unable to observe and record lunar phases due to a bad weather or the moon appearing late in the night. Therefore, it is an effective tool for astronomy education in elementary and high schools. A teaching experiment has been conducted to analyze the learning effectiveness of the system and the results show that it is effective in learning the lunar concepts. The questionnaire results reveal that students considered the system easy to operate and it is useful in locating the moon and recording the lunar data.

  17. IFMIF-KEP. International fusion materials irradiation facility key element technology phase report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-03-01

    The International Fusion Materials Irradiation Facility (IFMIF) is an accelerator-based D-Li neutron source designed to produce an intense neutron field that will simulate the neutron environment of a D-T fusion reactor. IFMIF will provide a neutron flux equivalent to 2 MW/m{sup 2}, 20 dpa/y in Fe, in a volume of 500 cm{sup 3} and will be used in the development and qualification of materials for fusion systems. The design activities of IFMIF are performed under an IEA collaboration which began in 1995. In 2000, a three-year Key Element Technology Phase (KEP) of IFMIF was undertaken to reduce the key technology risk factors. This KEP report describes the results of the three-year KEP activities in the major project areas of accelerator, target, test facilities and design integration. (author)

  18. Thermal test results of the two-phase thermal bus technology demonstration loop

    Science.gov (United States)

    Edelstein, Fred; Liandris, Maria; Rankin, J. Gary

    1987-01-01

    A two-phase heat transport system, the Thermal Bus Technology Demonstrator, has been built and tested for NASA Johnson Space Center for application on Space Station. The loop is a separated two-phase system that uses evaporator flow control valves and liquid condenser flooding to achieve temperature control. Both ambient and thermal vacuum tests have been completed in NASA's Chamber A, initially using Freon-11 and then ammonia as the working fluid. Overall, the tests were quite successful, with the bus achieving all major test objectives, including operation at 19.5 kW and set points at 35 F (1.7 C), 70 F (21.1 C) and 104 F (40.0 C), load sharing, asymmetrical heating and isothermality around the loop. Low plate to vapor temperature drops were obtained for the monogroove cold plate using ammonia and are indicative of the high evaporative film coefficients obtainable with this design.

  19. Study on 8DPSK of multi-phase modulation technology based on CSRZ

    Institute of Scientific and Technical Information of China (English)

    XU Heng-ying; NIU Hui-juan; ZHANG Min; WANG Fang; BAI Cheng-lin; ZHANG Xiao-guang

    2011-01-01

    A new modulation format in optical fiber communication system, the eight differential phase shift keying (8DPSK) of multi-phase modulation technology based on carrier-suppressed return-to-zero (CSRZ) is proposed in this paper. The formulae of CSRZ-8DPSK modem methods are derived theoretically and the methods are demonstrated. Spectra based on CSRZ and CSRZ-8DPSK modulation methods and their eye diagrams by simulation with MATLAB are obtained. The results show that the CSRZ-8DPSK modulation methods have narrower spectra with higher efficiency. The performance of eye diagrams is also much satisfactory after demodulation, suggesting some possible applications of the methods in the next generation of optical fiber communications.

  20. Low-noise multiple watermarks technology based on complex double random phase encoding method

    Science.gov (United States)

    Zheng, Jihong; Lu, Rongwen; Sun, Liujie; Zhuang, Songlin

    2010-11-01

    Based on double random phase encoding method (DRPE), watermarking technology may provide a stable and robust method to protect the copyright of the printing. However, due to its linear character, DRPE exist the serious safety risk when it is attacked. In this paper, a complex coding method, which means adding the chaotic encryption based on logistic mapping before the DRPE coding, is provided and simulated. The results testify the complex method will provide better security protection for the watermarking. Furthermore, a low-noise multiple watermarking is studied, which means embedding multiple watermarks into one host printing and decrypt them with corresponding phase keys individually. The Digital simulation and mathematic analysis show that with the same total embedding weight factor, multiply watermarking will improve signal noise ratio (SNR) of the output printing image significantly. The complex multiply watermark method may provide a robust, stability, reliability copyright protection with higher quality printing image.

  1. Clinical proteomics in kidney disease as an exponential technology: heading towards the disruptive phase.

    Science.gov (United States)

    Sanchez-Niño, Maria Dolores; Sanz, Ana B; Ramos, Adrian M; Fernandez-Fernandez, Beatriz; Ortiz, Alberto

    2017-04-01

    Exponential technologies double in power or processing speed every year, whereas their cost halves. Deception and disruption are two key stages in the development of exponential technologies. Deception occurs when, after initial introduction, technologies are dismissed as irrelevant, while they continue to progress, perhaps not as fast or with so many immediate practical applications as initially thought. Twenty years after the first publications, clinical proteomics is still not available in most hospitals and some clinicians have felt deception at unfulfilled promises. However, there are indications that clinical proteomics may be entering the disruptive phase, where, once refined, technologies disrupt established industries or procedures. In this regard, recent manuscripts in CKJ illustrate how proteomics is entering the clinical realm, with applications ranging from the identification of amyloid proteins in the pathology lab, to a new generation of urinary biomarkers for chronic kidney disease (CKD) assessment and outcome prediction. Indeed, one such panel of urinary peptidomics biomarkers, CKD273, recently received a Food and Drug Administration letter of support, the first ever in the CKD field. In addition, a must-read resource providing information on kidney disease-related proteomics and systems biology databases and how to access and use them in clinical decision-making was also recently published in CKJ.

  2. Preparation of A New Fiber by Sol-gel Technology in Solid-phase Microextraction (SPME)

    Institute of Scientific and Technical Information of China (English)

    Li Ming WEI; Qing Yu OU; Ju Bai LI

    2004-01-01

    The sol-gel technology is applied for the preparation of solid-phase microextraction (SPME) fiber. The fiber demonstrates high thermal stability, efficient extraction rate and the selectivity for non-polar or low-polar analytes. Efficient SPME-GC-FID analyses of benzene- toluene-ethylbenzene-xylenes (BTEXs) and low-polar halocarbon were achieved by the sol-gel coated DSDA-DDBT-TiO2 fiber. Some parameters of the SPME fiber for the determination of halocarbon in aqueous sample were investigated.

  3. Phasing Variants in Poplar Trees using a Hybrid of Short & Long Read Technologies

    Energy Technology Data Exchange (ETDEWEB)

    Schackwitz, Wendy; Martin, Joel; Lipzen, Anna; Pennacchio, Len; Tuskan, Gerald

    2013-03-26

    Poplar grow throughout the West coast & are adapted to extremely variable conditions. To examine what allows for this wide range of growth conditions, Jerry Tuskan's team has collected 1000 different individuals from British Columbia to California. In 2009, three Common Gardens were established where each individual was cloned in triplicate. Nearly all of these trees have been sequenced using short read technology, revealing a huge degree of variation in genotype. Correlating this genomic variation to phenotype would be greatly be strengthened if the variants could be phased into long haplotype blocks.

  4. Assessment of weld quality of aerospace grade metals by using ultrasonic matrix phased array technology

    Science.gov (United States)

    Na, Jeong K.; Gleeson, Sean T.

    2014-03-01

    Advantages of two dimensional electronic ultrasonic beam focusing, steering and scanning with the matrix phased array (MPA) technology has been used to visualize the conditions of resistance spot welds in auto vehicle grade advanced high strength steel carbon steels nondestructively. Two of the commonly used joining techniques, resistance spot welding and resistance seam welding, for thin aerospace grade plates made of aluminum, titanium, and stainless steels have also been inspected with the same MPA NDE system. In this study, a detailed discussions of the current MPA based ultrasonic real time imaging methodology has been made followed by some of the NDT results obtained with various welded test coupons.

  5. System-Level Integrated Circuit (SLIC) Technology Development for Phased Array Antenna Applications

    Science.gov (United States)

    Windyka, John A.; Zablocki, Ed G.

    1997-01-01

    This report documents the efforts and progress in developing a 'system-level' integrated circuit, or SLIC, for application in advanced phased array antenna systems. The SLIC combines radio-frequency (RF) microelectronics, digital and analog support circuitry, and photonic interfaces into a single micro-hybrid assembly. Together, these technologies provide not only the amplitude and phase control necessary for electronic beam steering in the phased array, but also add thermally-compensated automatic gain control, health and status feedback, bias regulation, and reduced interconnect complexity. All circuitry is integrated into a compact, multilayer structure configured for use as a two-by-four element phased array module, operating at 20 Gigahertz, using a Microwave High-Density Interconnect (MHDI) process. The resultant hardware is constructed without conventional wirebonds, maintains tight inter-element spacing, and leads toward low-cost mass production. The measured performances and development issues associated with both the two-by-four element module and the constituent elements are presented. Additionally, a section of the report describes alternative architectures and applications supported by the SLIC electronics. Test results show excellent yield and performance of RF circuitry and full automatic gain control for multiple, independent channels. Digital control function, while suffering from lower manufacturing yield, also proved successful.

  6. Development of a new high transmission phase shift mask technology for 10 nm logic node

    Science.gov (United States)

    Faure, Thomas; Sakamoto, Yoshifumi; Toda, Yusuke; Badger, Karen; Seki, Kazunori; Lawliss, Mark; Isogawa, Takeshi; Zweber, Amy; Kagawa, Masayuki; Wistrom, Richard; Xu, Yongan; Lobb, Granger; Viswanathan, Ramya; Hu, Lin; Inazuki, Yukio; Nishikawa, Kazuhiro

    2016-05-01

    In this paper we will describe the development of a new 12% high transmission phase shift mask technology for use with the 10 nm logic node. The primary motivation for this work was to improve the lithographic process window for 10 nm node via hole patterning by reducing the MEEF and improving the depth of focus (DOF). First, the simulated MEEF and DOF data will be compared between the 6% and high T PSM masks with the transmission of high T mask blank varying from 12% to 20%. This resulted in selection of a 12% transmission phase shift mask. As part of this work a new 12% attenuated phase shift mask blank was developed. A detailed description and results of the key performance metrics of the new mask blank including radiation durability, dry etch properties, film thickness, defect repair, and defect inspection will be shared. In addition, typical mask critical dimension uniformity and mask minimum feature size performance for 10 nm logic node via level mask patterns will be shown. Furthermore, the results of work to optimize the chrome hard mask film properties to meet the final mask minimum feature size requirements will be shared. Lastly, the key results of detailed lithographic performance comparisons of the process of record 6% and new 12% phase shift masks on wafer will be described. The 12% High T blank shows significantly better MEEF and larger DOF than those of 6% PSM mask blank, which is consistent with our simulation data.

  7. Optimization as a support for design of hot rolling technology of dual phase steel strips

    Science.gov (United States)

    Szeliga, Danuta; Sztangret, Łukasz; Kusiak, Jan; Pietrzyk, Maciej

    2013-05-01

    The objective of the paper was performing of the sensitivity analysis of the model used for design of manufacturing technology for auto body parts made of the Advanced High Strength Steels (AHSS). Dual phase steel was considered as an example. The sensitivity analysis was performed to evaluate the importance of all variables as far as their influence on the finishing rolling temperature and grain size. The phase composition after cooling was also considered. An arbitrary hot rolling process characterized only by a number of passes and cooling conditions between passes, as well as by laminar cooling parameters, was selected for the analysis. Metamodel of the rolling cycle was developed to decrease the computing costs for the optimization task. Modified Avrami equation was used for modelling phase transformations during cooling. Such process parameters as the initial temperature, interpass times, heat exchange coefficients and rolling velocities were selected as optimization variables for the rolling process. Parameters of the thermal cycles were selected as the optimization variables for the laminar cooling process. Achieving the required phase composition of product was the optimization objective function. Optimization was performed using various techniques, including methods inspired by nature optimization.

  8. Emerging technologies and approaches to minimize discharges into Lake Michigan, phase 2 module 4 report.

    Energy Technology Data Exchange (ETDEWEB)

    Negri, M.C.; Gillenwater, P.; Urgun-Demirtas, M.; Nnanna, G.; Yu, J.; Jannotta, I, (Energy Systems); (Purdue University Calumet)

    2012-04-19

    The Great Lakes Initiative (GLI) established the new water quality-based discharge criteria for mercury (Hg), thereby increasing the need for many municipal and industrial wastewater treatment plants in the region to lower the mercury in their effluents. Information on deployable technologies to satisfy these requirements for industrial and municipal dischargers in the Great lakes region is scarce. Therefore, BP funded Purdue University Calumet and Argonne to identify deployable Hg removal technologies to meet the GLI discharge criterion at its Whiting Refinery in Indiana. The joint PUC/Argonne project was divided into 2 phases. Results from Phase I and Phase II Modules 1-3 have been previously reported. This report summarizes the work done in Phase 3 Module 4, which consisted of the pilot scale testing of Hg removal technologies previously selected in Module 3. The pilot testing was an Argonne/PUC jointly directed project that was hosted at and funded by the BP refinery in Whiting, IN. As two organizations were involved in data analysis and interpretation, this report combines two independent sets of evaluations of the testing that was done, prepared respectively by Argonne and Purdue. Each organization retains sole responsibility for its respective analysis conclusions and recommendations. Based on Module 3 bench testing with pre-Effluent To Lake (pre-ETL) and clarifier effluent (CE) samples from the Whiting refinery, three different technologies were chosen for pilot testing: (1) Ultrafiltration (using GE ZeeWeed(reg sign) Technology, 0.04 {mu}m pore size and made up of PVDF) for particulate mercury removal; (2) Adsorption using Mersorb(reg sign) LW, a sulfur-impregnated activated carbon, for dissolved mercury removal if present and (3) The Blue PRO(reg sign) reactive filtration process for both particulate and dissolved (if present) mercury removal. The ultrafiltration and the Blue PRO(reg sign) reactive filtration pilot studies were done simultaneously at the

  9. Assessment of the thermal-hydraulic technology of the transition phase of a core-disruptive accident in a LMFBR

    Energy Technology Data Exchange (ETDEWEB)

    Greene, G.A.; Ginsberg, T.; Kazimi, M.S.

    1982-11-01

    The technology of thermal hydraulic aspects of the transition phase accident sequence in liquid metal fast breeder reactors has been reviewed. Previous analyses of the transition phase accident sequence have been reviewed and the current understanding of major thermal hydraulic phenomenology has been assessed. As a result of the foregoing, together with a scoping analysis of the transition phase accident sequence, major transition phase issues have been defined and research needs have been identified. The major conclusion of transition phase scoping analysis is that fuel dispersal cannot be relied upon to rule out the possibility of recriticalities during this stage of the accident.

  10. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, C. LEE COOK DIVISION, DOVER CORPORATION, STATIC PAC (TM) SYSTEM, PHASE II REPORT

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the Static Pac System, Phase II, natural gas reciprocating compressor rod packing manufactured by the C. Lee Cook Division, Dover Corporation. The Static Pac System is designed to seal th...

  11. Rigid polyurethane foam (RPF) technology for Countermine (Sea) Program -- Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    Woodfin, R.L. [Sandia National Labs., Albuquerque, NM (United States). Exploratory Sensors and Munitions Dept.

    1997-01-01

    This Phase 1 report documents the results of one of the subtasks that was initiated under the joint Department of Energy (DOE)/Department of Defense (DoD) Memorandum of Understanding (MOU) for Countermine Warfare. The development of a foam that can neutralize mines and barriers and allow the safe passage of amphibious landing craft and vehicles was the objective of this subtask of the Sea Mine Countermeasures Technology program. This phase of the program concentrated on laboratory characterization of foam properties and field experiments with prefabricated foam blocks to determine the capability of RPF to adequately carry military traffic. It also established the flammability characteristics of the material under simulated operational conditions, extended the understanding of explosive cavity formation in RPF to include surface explosions, established the tolerance to typical military fluids, and the response to bullet impact. Many of the basic analyses required to establish the operational concept are reported. The initial field experiments were conducted at the Energetic Materials Research and Testing Center (EMRTC) of the New Mexico Institute of Mining and Technology, Socorro, NM in November 1995 through February 1996.

  12. IFMIF (International Fusion Materials Irradiation Facility) key element technology phase task description

    Energy Technology Data Exchange (ETDEWEB)

    Ida, M.; Nakamura, H.; Sugimoto, M.; Yutani, T.; Takeuchi, H. [eds.] [Japan Atomic Energy Research Inst., Tokai Research Establishment, Fusion Neutron Laboratory, Tokai, Ibaraki (Japan)

    2000-08-01

    In 2000, a 3 year Key Element technology Phase (KEP) of the International Fusion Materials Irradiation Facility (IFMIF) has been initiated to reduce the key technology risk factors needed to achieve continuous wave (CW) beam with the desired current and energy and to reach the corresponding power handling capabilities in the liquid lithium target system. In the KEP, the IFMIF team (EU, Japan, Russian Federation, US) will perform required tasks. The contents of the tasks are described in the task description sheet. As the KEP tasks, the IFMIF team have proposed 27 tasks for Test Facilities, 12 tasks for Target, 26 tasks for Accelerator and 18 tasks for Design Integration. The task description by RF is not yet available. The task items and task descriptions may be added or revised with the progress of KEP activities. These task description sheets have been compiled in this report. After 3 years KEP, the results of the KEP tasks will be reviewed. Following the KEP, 3 years Engineering Validation Phase (EVP) will continue for IFMIF construction. (author)

  13. The big squeeze : multi-phase pumping technology aims to increase recovery rates from aging fields

    Energy Technology Data Exchange (ETDEWEB)

    Ross, E.

    2008-04-15

    New technologies developed to assist with offshore oil and gas activities were discussed. The BP King multi-phase pumping project in the Gulf of Mexico is now expecting to enhance production by 20 per cent and extend the life of its field by 5 years through the use of multibooster pumps installed in 2007. The subsea boosting technology has reduced back pressure on the wells and increased oil recovery rates. Multi-phase pumping increased the distance over which the wellstream could be transported. The pump consisted of 4 main components: (1) a motor barrel; (2) a motor cartridge; (3) a pump barrel; and (4) a twin screw pump cartridge. The twin screw product has the ability to pump oil and gas streams with a range of gas void fractions. The pump is self-priming and runs at a relatively low rate. Changes to the pitch and diameter of the screw are used to control the volume of flow and the pressure. The project is also using a long-distance, high voltage distribution system to control multiple pumps at different speeds. The power umbilical system was developed to provide delivery lines for hydraulic fluids, and the umbilical cords also house a fibre-optic communications system to ensure high speed pump response. 3 figs.

  14. Design of Low Power Phase Locked Loop (PLL Using 45NM VLSI Technology

    Directory of Open Access Journals (Sweden)

    Ms. Ujwala A. Belorkar

    2010-06-01

    Full Text Available Power has become one of the most important paradigms of design convergence for multigigahertz communication systems such as optical data links, wireless products, microprocessor &ASIC/SOC designs. POWER consumption has become a bottleneck in microprocessor design. The coreof a microprocessor, which includes the largest power density on the microprocessor. In an effort toreduce the power consumption of the circuit, the supply voltage can be reduced leading to reduction ofdynamic and static power consumption. Lowering the supply voltage, however, also reduces theperformance of the circuit, which is usually unacceptable. One way to overcome this limitation, availablein some application domains, is to replicate the circuit block whose supply voltage is being reduced inorder to maintain the same throughput .This paper introduces a design aspects for low power phaselocked loop using VLSI technology. This phase locked loop is designed using latest 45nm processtechnology parameters, which in turn offers high speed performance at low power. The main noveltyrelated to the 45nm technology such as the high-k gate oxide ,metal-gate and very low-k interconnectdielectric described. VLSI Technology includes process design, trends, chip fabrication, real circuitparameters, circuit design, electrical characteristics, configuration building blocks, switching circuitry,translation onto silicon, CAD, practical experience in layout design

  15. OPTIMUM RESOLUTION OF PHASE FREQUENCY DETECTOR BY CMOS TECHNOLOGY FOR PLL

    Directory of Open Access Journals (Sweden)

    B.Y. Vinay Kumar

    2015-12-01

    Full Text Available One of the nonlinear components in PLL is Phase Frequency Detector (PFD,the purpose is to compare two input frequencies in terms of their phase and frequency. In this process jitter will be introduced to the PLL system by PFD. proposed PFD is the preferred approach for detecting weak signals as from a deep space profile. The increase of MOS devices on a single chip will consume more power. Various applications of the PLL such as wireless communication systems, digital circuits, and receivers, targets optimum PFD Design. Optimized PFD reduces jitter effect on PLL and enhances the performance of PLL by increasing the locking range, reducing the phase error variance, reducing the acquisition time and reducing the power consumption. The power consumption in the design of PFD is dependent on CMOS logic of the gates In this paper we propose CMOS PFD, where the performance of the result will be analyzed by using Tanner EDA Tool by considering 45nm technology.

  16. Industrialization of technology of continuous liquid phase separation. Renzoku ekiso bunri gijutsu no kogyoka

    Energy Technology Data Exchange (ETDEWEB)

    Nakaishi, H. (JGC Corp., Tokyo (Japan))

    1994-01-05

    As one example of process technology industrialized in 1960s, a continuous process by liquid phase adsorption is introduced, that was developed by an American enterprise for petroleum refining. The background of development is described in details and elements for its success are explained as well as the impact. The motive for development was to separate n-paraffin from oil with molecular sieves in order to raise octane values of gasoline. However, the scene realized in industrialization was in the separation of n-paraffin from kerosene to get raw materials for synthetic detergents. Although literature on gas phase adsorption was well documented at that time, liquid adsorption that was an untrodden field was decided to be explored in consideration of problems involved in high temperature required for gas phase sdsorption. Taking theoretical validity of a moving bed system into consideration, a pseudo-moving bed system, wherein adsorption beds are still and the take-in/-out position of liquid moves with time lapse, was developed for the sake of limited mechanical strength of adsorbent (zeolite)and biased flow caused by moving layers. Use of mathematical models as probes for phenomena of chemical engineering and for analysis of process performance by computers contributed greatly to the success. 3 refs., 1 fig.

  17. Image-guided ultrasound phased arrays are a disruptive technology for non-invasive therapy

    Science.gov (United States)

    Hynynen, Kullervo; Jones, Ryan M.

    2016-09-01

    Focused ultrasound offers a non-invasive way of depositing acoustic energy deep into the body, which can be harnessed for a broad spectrum of therapeutic purposes, including tissue ablation, the targeting of therapeutic agents, and stem cell delivery. Phased array transducers enable electronic control over the beam geometry and direction, and can be tailored to provide optimal energy deposition patterns for a given therapeutic application. Their use in combination with modern medical imaging for therapy guidance allows precise targeting, online monitoring, and post-treatment evaluation of the ultrasound-mediated bioeffects. In the past there have been some technical obstacles hindering the construction of large aperture, high-power, densely-populated phased arrays and, as a result, they have not been fully exploited for therapy delivery to date. However, recent research has made the construction of such arrays feasible, and it is expected that their continued development will both greatly improve the safety and efficacy of existing ultrasound therapies as well as enable treatments that are not currently possible with existing technology. This review will summarize the basic principles, current statures, and future potential of image-guided ultrasound phased arrays for therapy.

  18. Genius Sand: A Miniature Kill Vehicle Technology to Support Boost Phase Intercepts and Midcourse Engagements

    Energy Technology Data Exchange (ETDEWEB)

    Ledebuhr, A.G.; Ng, L.C.; Kordas, J.F.; Jones, M.S.; McMahon, D.H.

    2002-06-30

    This paper summarizes Lawrence Livermore National Laboratory's (LLNL) approach to a proposed Technology Demonstration program for the development of a new class of miniature kill vehicles (MKVs), that they have termed Genius Sand (GS). These miniaturized kinetic kill vehicles offer new capabilities for boost phase intercept (BPI) missions, as well as midcourse intercepts and the defeat of advanced countermeasures. The specific GS MKV properties will depend on the choice of mission application and system architecture, as well as the level of coordinated or autonomous operations in these missions. In general the GS MKVs will mass from between 1 to 5 kilograms and have several hundred meters per second of {Delta}v and be capable of several g's of acceleration. Based on the results of their previous study effort, they believe that it is feasible to develop and integrate the required technologies into a fully functional GS MKV prototype within the scope of a three-year development effort. They will discuss some of the system architecture trades and applicable technologies that can be applied in an operational MKV system, as a guide to focus any technology demonstration program. They will present the results of a preliminary 6DOF analysis to determine the minimum capabilities of an MKV system. They also will discuss a preliminary design configuration of a 2 kg GS MKV that has between 300-500 m/s of {Delta}v and has at least 2-g's of acceleration capability. They believe a successful GS MKV development effort will require not only a comprehensive component miniaturization program, but a rapid hardware prototyping process, and the ability to utilize high fidelity ground testing methodologies.

  19. Quality investigation of surface mount technology using phase-shifting digital holography

    Science.gov (United States)

    Boonsri, Chantira; Buranasiri, Prathan

    2016-09-01

    Applying of a phase-shifting digital holography combined with compressive sensing to inspect the soldering quality of surface mount technology (SMT) which is a method for producing electronic circuits. In SMT, the components are mounted and connected with each other directly onto the surface of printed circuit boards (PCBs). By reconstructing the multidimensional images from a few samples of SMT, the results are solved by an optimization problem. In this paper, two problems have been concerned. The first one is to examine the devices and the soldering quality of connections between them, which are in micro-scaled. The second is to observe the effect of heat treatment of soldering material and devices on the surface mount board.

  20. Development of scalable frequency and power Phase-Locked Loop in 130nm CMOS technology

    CERN Document Server

    Firlej, M; Idzik, M; Moron, J; Swientek, K

    2014-01-01

    The design and measurements results of a prototype very low power Phase-Locked Loop (PLL) ASIC for applications in readout systems of particle physics detectors are presented. The PLL was fabricated in 130 nm CMOS technology. It was designed and simulated for frequency range 10 MHz–3.5 GHz. Four division factors i.e. 6, 8, 10 and 16 were implemented in the PLL feedback loop. The main PLL block-voltage controlled oscillator (VCO) should work in 16 frequency ranges/modes, switched either manually or automatically. Preliminary measurements done in frequency range 20 MHz–1.6 GHz showed that the ASIC is functional and generates proper clock signal. The automatic VCO mode switching, one of the main design goals, was positively verified. Power consumption of around 0.6mW was measured at 1 GHz for a division factor equal to 10.

  1. In Situ Mercury Stabilization (ISMS) Treatment: Technology Maturation Project Phase I Status Report

    Energy Technology Data Exchange (ETDEWEB)

    Kalb,P.D.; Milian, L.

    2008-03-01

    technology. If further developed it has the potential for large-scale in-situ treatment of contaminated soils that could substantially reduce the prohibitive cost of thermal desorption and/or excavation and disposal. Licensing and spin-off technology development opportunities would then be viable. Depending on performance and regulatory acceptance, the treated mercury could either be excavated for disposal elsewhere or left in place as a stable alternative. Excavated spent treatment rods could be processed by the SPSS process to reduce the potential for dispersion and lower leachability even further. The Phase I objectives of the In Situ Mercury Stabilization Treatment Process Technology Maturation Project were to: (1) replicate the original bench-scale results that formed the basis for BNL's patent application, i.e., mercury contamination in soil will migrate to and react with 'rods' containing sulfur and/or sulfur compounds, (2) provide enough information to evaluate a decision to conduct further development, and (3) establish some of the critical parameters that require further technology maturation during Phase II. The information contained in this report summarizes the work conducted in Phase I to meet these objectives.

  2. Investigation of HV/HR-CMOS technology for the ATLAS Phase-II Strip Tracker Upgrade

    Energy Technology Data Exchange (ETDEWEB)

    Fadeyev, V., E-mail: fadeyev@ucsc.edu [Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, CA 95064 (United States); Galloway, Z.; Grabas, H.; Grillo, A.A.; Liang, Z.; Martinez-Mckinney, F.; Seiden, A.; Volk, J. [Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, CA 95064 (United States); Affolder, A.; Buckland, M.; Meng, L. [Department of Physics, University of Liverpool, O. Lodge Laboratory, Oxford Street, Liverpool L69 7ZE (United Kingdom); Arndt, K.; Bortoletto, D.; Huffman, T.; John, J.; McMahon, S.; Nickerson, R.; Phillips, P.; Plackett, R.; Shipsey, I. [Department of Physics, Oxford University, Oxford (United Kingdom); and others

    2016-09-21

    ATLAS has formed strip CMOS project to study the use of CMOS MAPS devices as silicon strip sensors for the Phase-II Strip Tracker Upgrade. This choice of sensors promises several advantages over the conventional baseline design, such as better resolution, less material in the tracking volume, and faster construction speed. At the same time, many design features of the sensors are driven by the requirement of minimizing the impact on the rest of the detector. Hence the target devices feature long pixels which are grouped to form a virtual strip with binary-encoded z position. The key performance aspects are radiation hardness compatibility with HL-LHC environment, as well as extraction of the full hit position with full-reticle readout architecture. To date, several test chips have been submitted using two different CMOS technologies. The AMS 350 nm is a high voltage CMOS process (HV-CMOS), that features the sensor bias of up to 120 V. The TowerJazz 180 nm high resistivity CMOS process (HR-CMOS) uses a high resistivity epitaxial layer to provide the depletion region on top of the substrate. We have evaluated passive pixel performance, and charge collection projections. The results strongly support the radiation tolerance of these devices to radiation dose of the HL-LHC in the strip tracker region. We also describe design features for the next chip submission that are motivated by our technology evaluation.

  3. An Overview of Communications Technology and Development Efforts for 2015 SBIR Phase I

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.

    2017-01-01

    This report highlights innovative SBIR 2015 Phase I projects specifically addressing areas in Communications Technology and Development which is one of six core competencies at NASA Glenn Research Center. There are fifteen technologies featured with emphasis on a wide spectrum of applications such as novel solid state lasers for space-based water vapor dial; wide temperature, high voltage and energy density capacitors for aerospace exploration; instrument for airborne measurement of carbonyl sulfide; high-power tunable seed laser for methane Lidar transmitter; ROC-rib deployable ka-band antenna for nanosatellites; a SIC-based microcontroller for high-temperature in-situ instruments and systems; improved yield, performance and reliability of high-actuator-count deformable mirrors; embedded multifunctional optical sensor system; switching electronics for space-based telescopes with advanced AO systems; integrated miniature DBR laser module for Lidar instruments; and much more. Each article in this booklet describes an innovation, technical objective, and highlights NASA commercial and industrial applications. space-based water vapor dial; wide temperature, high voltage and energy density capacitors foraerospace exploration; instrument for airborne measurement of carbonyl sulfide; high-power tunable seed laser formethane Lidar transmitter; ROC-rib deployable ka-band antenna for nanosatellites.

  4. Investigation of HV/HR-CMOS technology for the ATLAS Phase-II Strip Tracker Upgrade

    Science.gov (United States)

    Fadeyev, V.; Galloway, Z.; Grabas, H.; Grillo, A. A.; Liang, Z.; Martinez-Mckinney, F.; Seiden, A.; Volk, J.; Affolder, A.; Buckland, M.; Meng, L.; Arndt, K.; Bortoletto, D.; Huffman, T.; John, J.; McMahon, S.; Nickerson, R.; Phillips, P.; Plackett, R.; Shipsey, I.; Vigani, L.; Bates, R.; Blue, A.; Buttar, C.; Kanisauskas, K.; Maneuski, D.; Benoit, M.; Di Bello, F.; Caragiulo, P.; Dragone, A.; Grenier, P.; Kenney, C.; Rubbo, F.; Segal, J.; Su, D.; Tamma, C.; Das, D.; Dopke, J.; Turchetta, R.; Wilson, F.; Worm, S.; Ehrler, F.; Peric, I.; Gregor, I. M.; Stanitzki, M.; Hoeferkamp, M.; Seidel, S.; Hommels, L. B. A.; Kramberger, G.; Mandić, I.; Mikuž, M.; Muenstermann, D.; Wang, R.; Zhang, J.; Warren, M.; Song, W.; Xiu, Q.; Zhu, H.

    2016-09-01

    ATLAS has formed strip CMOS project to study the use of CMOS MAPS devices as silicon strip sensors for the Phase-II Strip Tracker Upgrade. This choice of sensors promises several advantages over the conventional baseline design, such as better resolution, less material in the tracking volume, and faster construction speed. At the same time, many design features of the sensors are driven by the requirement of minimizing the impact on the rest of the detector. Hence the target devices feature long pixels which are grouped to form a virtual strip with binary-encoded z position. The key performance aspects are radiation hardness compatibility with HL-LHC environment, as well as extraction of the full hit position with full-reticle readout architecture. To date, several test chips have been submitted using two different CMOS technologies. The AMS 350 nm is a high voltage CMOS process (HV-CMOS), that features the sensor bias of up to 120 V. The TowerJazz 180 nm high resistivity CMOS process (HR-CMOS) uses a high resistivity epitaxial layer to provide the depletion region on top of the substrate. We have evaluated passive pixel performance, and charge collection projections. The results strongly support the radiation tolerance of these devices to radiation dose of the HL-LHC in the strip tracker region. We also describe design features for the next chip submission that are motivated by our technology evaluation.

  5. Photovoltaic manufacturing technology, Phase 1. Final technical report, 1 May 1991--10 May 1991

    Energy Technology Data Exchange (ETDEWEB)

    1992-10-01

    This report describes subcontracted research by the Chronar Corporation, prepared by Advanced Photovoltaic Systems, Inc. (APS) for Phase 1 of the Photovoltaic Manufacturing Technology Development project. Amorphous silicon is chosen as the PV technology that Chronar Corporation and APS believe offers the greatest potential for manufacturing improvements, which, in turn, will result in significant cost reductions and performance improvements in photovoltaic products. The APS ``Eureka`` facility was chosen as the manufacturing system that can offer the possibility of achieving these production enhancements. The relationship of the ``Eureka`` facility to Chronar`s ``batch`` plants is discussed. Five key areas are also identified that could meet the objectives of manufacturing potential that could lead to improved performance, reduced manufacturing costs, and significantly increased production. The projected long-term potential benefits of these areas are discussed, as well as problems that may impede the achievement of the hoped-for developments. A significant number of the problems discussed are of a generic nature and could be of general interest to the industry. The final section of this document addresses the cost and time estimates for achieving the solutions to the problems discussed earlier. Emphasis is placed on the number, type, and cost of the human resources required for the project.

  6. Microfluidic EBG Sensor Based on Phase-Shift Method Realized Using 3D Printing Technology

    Directory of Open Access Journals (Sweden)

    Vasa Radonić

    2017-04-01

    Full Text Available In this article, we propose a novel microfluidic microstrip electromagnetic band gap (EBG sensor realized using cost-effective 3D printing technology. Microstrip sensor allows monitoring of the fluid properties flowing in the microchannel embedded between the microstrip line and ground plane. The sensor’s operating principle is based on the phase-shift method, which allows the characterization at a single operating frequency of 6 GHz. The defected electromagnetic band gap (EBG structure is realized as a pattern in the microstrip ground plane to improve sensor sensitivity. The designed microfluidic channel is fabricated using a fused deposition modelling (FDM 3D printing process without additional supporting layers, while the conductive layers are realized using sticky aluminium tape. The measurement results show that the change of permittivity of the fluid in the microfluidic channel from 1 to 80 results in the phase-shift difference of almost 90°. The potential application is demonstrated through the implementation of a proposed sensor for the detection of toluene concentration in toluene–methanol mixture where various concentrations of toluene were analysed.

  7. Microfluidic EBG Sensor Based on Phase-Shift Method Realized Using 3D Printing Technology.

    Science.gov (United States)

    Radonić, Vasa; Birgermajer, Slobodan; Kitić, Goran

    2017-04-18

    In this article, we propose a novel microfluidic microstrip electromagnetic band gap (EBG) sensor realized using cost-effective 3D printing technology. Microstrip sensor allows monitoring of the fluid properties flowing in the microchannel embedded between the microstrip line and ground plane. The sensor's operating principle is based on the phase-shift method, which allows the characterization at a single operating frequency of 6 GHz. The defected electromagnetic band gap (EBG) structure is realized as a pattern in the microstrip ground plane to improve sensor sensitivity. The designed microfluidic channel is fabricated using a fused deposition modelling (FDM) 3D printing process without additional supporting layers, while the conductive layers are realized using sticky aluminium tape. The measurement results show that the change of permittivity of the fluid in the microfluidic channel from 1 to 80 results in the phase-shift difference of almost 90°. The potential application is demonstrated through the implementation of a proposed sensor for the detection of toluene concentration in toluene-methanol mixture where various concentrations of toluene were analysed.

  8. Innovative fossil fuel fired vitrification technology for soil remediation. Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    1994-01-01

    Vortec has successfully completed Phase 1 of the ``Innovative Fossil Fuel Fired Vitrification Technology for Soil Remediation`` program. The Combustion and Melting System (CMS) has processed 7000 pounds of material representative of contaminated soil that is found at DOE sites. The soil was spiked with Resource Conservation and Recovery Act (RCRA) metals surrogates, an organic contaminant, and a surrogate radionuclide. The samples taken during the tests confirmed that virtually all of the radionuclide was retained in the glass and that it did not leach to the environment-as confirmed by both ANS 16.1 and Toxicity Characteristic Leaching Procedure (TCLP) testing. The organic contaminant, anthracene, was destroyed during the test with a Destruction and Removal Efficiency (DRE) of at least 99.99%. RCRA metal surrogates, that were in the vitrified product, were retained and did not leach to the environment as confirmed by the TCLP testing. Semi-volatile RCRA metal surrogates were captured by the Air Pollution Control (APC) system, and data on the amount of metal oxide particulate and the chemical composition of the particulate were established for use in the Phase 2 APC subsystem design.

  9. High-temperature-turbine technology program. Phase II. Technology test and support studies. Technical progress report, April 1, 1979-June 30, 1979

    Energy Technology Data Exchange (ETDEWEB)

    1979-07-01

    Work performed on the High-Temperature-Turbine Technology Program, Phase II-Technology Test and Support Studies during the period from 1 April 1979 through 30 June 1979 is summarized. Objectives of the program elements as well as technical progress and problems during this Phase II quarterly reporting period are presented. Planned progress during the next quarterly reporting period is also defined. Testing of the LP rig engine with hot gas stream particulates simulating operation on low Btu gas is described. Fabrication of components and preparation of facilities for future tests of the Turbine Spool Technology Rig are discussed together with analytical reviews. Preparation of the low Btu gas synthesizing facility is discussed. Supporting Materials and Process investigations are described.

  10. APE: the Active Phasing Experiment to test new control system and phasing technology for a European Extremely Large Optical Telescope

    Science.gov (United States)

    Gonte, F.; Yaitskova, N.; Derie, F.; Constanza, A.; Brast, R.; Buzzoni, B.; Delabre, B.; Dierickx, P.; Dupuy, C.; Esteves, R.; Frank, C.; Guisard, S.; Karban, R.; Koenig, E.; Kolb, J.; Nylund, M.; Noethe, L.; Surdej, I.; Courteville, A.; Wilhelm, R.; Montoya, L.; Reyes, M.; Esposito, S.; Pinna, E.; Dohlen, K.; Ferrari, M.; Langlois, M.

    2005-08-01

    The future European Extremely Large Telescope will be composed of one or two giant segmented mirrors (up to 100 m of diameter) and of several large monolithic mirrors (up to 8 m in diameter). To limit the aberrations due to misalignments and defective surface quality it is necessary to have a proper active optics system. This active optics system must include a phasing system to limit the degradation of the PSF due to misphasing of the segmented mirrors. We will present the lastest design and development of the Active Phasing Experiment that will be tested in laboratory and on-sky connected to a VLT at Paranal in Chile. It includes an active segmented mirror, a static piston plate to simulate a secondary segmented mirror and of four phasing wavefront sensors to measure the piston, tip and tilt of the segments and the aberrations of the VLT. The four phasing sensors are the Diffraction Image Phase Sensing Instrument developed by Instituto de Astrofisica de Canarias, the Pyramid Phasing Sensor developed by Arcetri Astrophysical Observatory, the Shack-Hartmann Phasing Sensor developed by the European Southern Observatory and the Zernike Unit for Segment phasing developed by Laboratoire d'Astrophysique de Marseille. A reference measurement of the segmented mirror is made by an internal metrology developed by Fogale Nanotech. The control system of Active Phasing Experiment will perform the phasing of the segments, the guiding of the VLT and the active optics of the VLT. These activities are included in the Framework Programme 6 of the European Union.

  11. Area Efficient 3.3GHZ Phase Locked Loop with Four Multiple Output Using 45NM VLSI Technology

    Directory of Open Access Journals (Sweden)

    Ms. Ujwala A. Belorkar

    2011-03-01

    Full Text Available This paper present area efficient layout designs for 3.3GigaHertz (GHz Phase Locked loop (PLL withfour multiple output. Effort has been taken to design Low Power Phase locked loop with multiple output,using VLSI technology. VLSI Technology includes process design, trends, chip fabrication, real circuitparameters, circuit design, electrical characteristics, configuration building blocks, switching circuitry,translation onto silicon, CAD and practical experience in layout design. The proposed PLL is designedusing 45 nm CMOS/VLSI technology with microwind 3.1. This software allows designing and simulatingan integrated circuit at physical description level. The main novelties related to the 45 nm technology arethe high-k gate oxide, metal gate and very low-k interconnect dielectric. The effective gate lengthrequired for 45 nm technology is 25nm. Low Power (0.211miliwatt phase locked loop with four multipleoutputs as PLL8x, PLL4x, PLL2x, & PLL1x of 3.3 GHz, 1.65 GHz, 0.825 GHz, and 0.412 GHzrespectively is obtained using 45 nm VLSI technology.

  12. Phase Change Materials: Technology Status and Potential Defence Applications (Review Papers

    Directory of Open Access Journals (Sweden)

    Ravindra Kumar

    2011-10-01

    Full Text Available Phase change materials (PCM are being utilised world over for energy storage and temperature smoothening applications. Defence Laboratory Jodhpur (DLJ has initiated a R&D programme to apply PCM in solving many heat related problems being faced by Indian forces during desert operations specially failure of mission-critical components. Under the programme, special organic PCM (Patent application no. 2258/DEL/2007 and low melting metal alloys have been developed well tuned to desert diurnal cycle. The PCM panels, when applied as an internal lining in buildings, structures and vehicles can moderate the extreme temperature within human tolerable range (below 40 °C without the use of any external power for cooling. The panels can also act as power saver in air conditioned buildings. A cool vest has also been developed with chargeable PCM packs to provide comfortable microenvironment to a soldier on field duty (below 30 °C for 2-3 hrs. To improve reliability of mission critical electronic instruments during desert operation, technology of absorptive PCM heat sinks is under development at DLJ. The special heat sink will absorb heat generated by component for critical mission (up to 1 hr independent of environment temperature and thus ensure smooth functioning of critical components even in extreme hot conditions. In present paper status of PCM technology world over has been reviewed along with the brief account of research on PCM at DLJ.Defence Science Journal, 2011, 61(6, pp.576-582, DOI:http://dx.doi.org/10.14429/dsj.61.363

  13. 60 GHz 5-bit digital controlled phase shifter in a digital 40 nm CMOS technology without ultra-thick metals

    NARCIS (Netherlands)

    Gao, H.; Ying, K.; Matters-Kammerer, M.K.; Harpe, P.; Wang, B.; Liu, B.; Serdijn, W.A.; Baltus, P.G.M.

    2016-01-01

    A 5-bit digital controlled switch-type passive phase shifter realised in a 40 nm digital CMOS technology without ultra-thick metals for the 60 GHz Industrial, Scientific and Medical (ISM) band is presented. A patterned shielding with electromagnetic bandgap structure and a stacked metals method to

  14. Three Metacognitive Approaches to Training Pre-Service Teachers in Different Learning Phases of Technological Pedagogical Content Knowledge

    Science.gov (United States)

    Kramarski, Bracha; Michalsky, Tova

    2009-01-01

    Our study investigated 3 metacognitive approaches provided during different phases of learning technological pedagogical content knowledge (TPCK) in a Web-based learning environment. These metacognitive approaches were based on self-question prompts (Kramarski & Mevarech, 2003) which appeared in pop-up screens and fostered the Self-Regulated…

  15. The development of coal-based technologies for Department of Defense facilities: Phase 1 final report. Volume 1: Technical report

    Energy Technology Data Exchange (ETDEWEB)

    Miller, B.G.; Morrison, J.L.; Pisupati, S.V. [Pennsylvania State Univ., University Park, PA (United States). Energy and Fuels Research Center] [and others

    1997-01-31

    The first phase of a three-phase project investigating the development of coal-based technologies for Department of Defense facilities has been completed. The objectives of the project are to: decrease DOD`s dependence on foreign oil and increase its use of coal; promote public and private sector deployment of technologies for utilizing coal-based fuels in oil-designed combustion equipment; and provide a continuing environment for research and development of coal-based fuel technologies for small-scale applications at a time when market conditions in the US are not favorable for the introduction of coal-fired equipment in the commercial and industrial capacity ranges. The Phase 1 activities were focused on developing clean, coal-based combustion technologies for the utilization of both micronized coal-water mixtures (MCWMs) and dry, micronized coal (DMC) in fuel oil-designed industrial boilers. The specific objective in Phase 1 was to deliver fully engineered retrofit options for a fuel oil-designed watertube boiler located on a DOD installation to fire either MCWM or DMC. This was achieved through a project consisting of fundamental, pilot-sale, and demonstration-scale activities investigating coal beneficiation and preparation, and MCWM and DMC combustion performance. In addition, detailed engineering designs and an economic analysis were conducted for a boiler located at the Naval Surface Warfare Center, near Crane, Indiana. Results are reported on MCWM and DMC combustion performance evaluation; engineering design; and cost/economic analysis.

  16. Taiwan industrial cooperation program technology transfer for low-level radioactive waste final disposal - phase I.

    Energy Technology Data Exchange (ETDEWEB)

    Knowlton, Robert G.; Cochran, John Russell; Arnold, Bill Walter; Jow, Hong-Nian; Mattie, Patrick D.; Schelling, Frank Joseph Jr. (; .)

    2007-01-01

    Sandia National Laboratories and the Institute of Nuclear Energy Research, Taiwan have collaborated in a technology transfer program related to low-level radioactive waste (LLW) disposal in Taiwan. Phase I of this program included regulatory analysis of LLW final disposal, development of LLW disposal performance assessment capabilities, and preliminary performance assessments of two potential disposal sites. Performance objectives were based on regulations in Taiwan and comparisons to those in the United States. Probabilistic performance assessment models were constructed based on limited site data using software including GoldSim, BLT-MS, FEHM, and HELP. These software codes provided the probabilistic framework, container degradation, waste-form leaching, groundwater flow, radionuclide transport, and cover infiltration simulation capabilities in the performance assessment. Preliminary performance assessment analyses were conducted for a near-surface disposal system and a mined cavern disposal system at two representative sites in Taiwan. Results of example calculations indicate peak simulated concentrations to a receptor within a few hundred years of LLW disposal, primarily from highly soluble, non-sorbing radionuclides.

  17. Analysis of Protein Glycosylation and Phosphorylation Using Liquid Phase Separation, Protein Microarray Technology, and Mass Spectrometry

    Science.gov (United States)

    Zhao, Jia; Patwa, Tasneem H.; Pal, Manoj; Qiu, Weilian; Lubman, David M.

    2010-01-01

    Summary Protein glycosylation and phosphorylation are very common posttranslational modifications. The alteration of these modifications in cancer cells is closely related to the onset and progression of cancer and other disease states. In this protocol, strategies for monitoring the changes in protein glycosylation and phosphorylation in serum or tissue cells on a global scale and specifically characterizing these alterations are included. The technique is based on lectin affinity enrichment for glycoproteins, all liquid-phase two-dimensional fractionation, protein microarray, and mass spectrometry technology. Proteins are separated based on pI in the first dimension using chromatofocusing (CF) or liquid isoelectric focusing (IEF) followed by the second-dimension separation using nonporous silica RP-HPLC. Five lectins with different binding specificities to glycan structures are used for screening glycosylation patterns in human serum through a biotin–streptavidin system. Fluorescent phosphodyes and phosphospecific antibodies are employed to detect specific phosphorylated proteins in cell lines or human tissues. The purified proteins of interest are identified by peptide sequencing. Their modifications including glycosylation and phosphorylation could be further characterized by mass-spectrometry-based approaches. These strategies can be used in biological samples for large-scale glycoproteome/phosphoproteome screening as well as for individual protein modification analysis. PMID:19241043

  18. Next Generation Metallic Iron Nodule Technology in Electric Arc Steelmaking - Phase II

    Energy Technology Data Exchange (ETDEWEB)

    Donald R. Fosnacht; Iwao Iwasaki; Richard F. Kiesel; David J. Englund; David W. Hendrickson; Rodney L. Bleifuss

    2010-12-22

    -bituminous coal as a reductant. From over 4000 laboratory tube and box furnace tests, it was established that the correct combination of additives, fluxes, and reductant while controlling the concentration of CO and CO2 in the furnace atmosphere (a) lowers the operating temperature, (b) decreases the use of reductant coal (c) generates less micro nodules of iron, and (d) promotes desulphurization. The laboratory scale work was subsequently verified on 12.2 m (40 ft) long pilot scale furnace. High quality NRI could be produced on a routine basis using the pilot furnace facility with energy provided from oxy-gas or oxy-coal burner technologies. Specific strategies were developed to allow the use of sub-bituminous coals both as a hearth material and as part of the reaction mixture. Computational Fluid Dynamics (CFD) modeling was used to study the overall carbothermic reduction and smelting process. The movement of the furnace gas on a pilot hearth furnace and larger simulated furnaces and various means of controlling the gas atmosphere were evaluated. Various atmosphere control methods were identified and tested during the course of the investigation. Based on the results, the appropriate modifications to the furnace were made and tested at the pilot scale. A series of reduction and smelting tests were conducted to verify the utility of the processing conditions. During this phase, the overall energy use characteristics, raw materials, alternative fuels, and the overall economics predicted for full scale implementation were analyzed. The results indicate that it should be possible to lower reaction temperatures while simultaneously producing low sulfur, high carbon NRI if the right mix chemistry and atmosphere are employed. Recommendations for moving the technology to the next stage of commercialization are presented.

  19. Q-band 4-state phase shifter in planar technology: Circuit design and performance analysis

    Science.gov (United States)

    Villa, E.; Cagigas, J.; Aja, B.; de la Fuente, L.; Artal, E.

    2016-09-01

    A 30% bandwidth phase shifter with four phase states is designed to be integrated in a radio astronomy receiver. The circuit has two 90° out-of-phase microwave phase-shifting branches which are combined by Wilkinson power dividers. Each branch is composed of a 180° phase shifter and a band-pass filter. The 180° phase shifter is made of cascaded hybrid rings with microwave PIN diodes as switching devices. The 90° phase shift is achieved with the two band-pass filters. Experimental characterization has shown significant results, with average phase shift values of -90.7°, -181.7°, and 88.5° within the operation band, 35-47 GHz, and mean insertion loss of 7.4 dB. The performance of its integration in a polarimetric receiver for radio astronomy is analyzed, which validates the use of the presented phase shifter in such type of receiver.

  20. Two-phase anaerobic digestion of vegetable market waste fraction of municipal solid waste and development of improved technology for phase separation in two-phase reactor.

    Science.gov (United States)

    Majhi, Bijoy Kumar; Jash, Tushar

    2016-12-01

    Biogas production from vegetable market waste (VMW) fraction of municipal solid waste (MSW) by two-phase anaerobic digestion system should be preferred over the single-stage reactors. This is because VMW undergoes rapid acidification leading to accumulation of volatile fatty acids and consequent low pH resulting in frequent failure of digesters. The weakest part in the two-phase anaerobic reactors was the techniques applied for solid-liquid phase separation of digestate in the first reactor where solubilization, hydrolysis and acidogenesis of solid organic waste occur. In this study, a two-phase reactor which consisted of a solid-phase reactor and a methane reactor was designed, built and operated with VMW fraction of Indian MSW. A robust type filter, which is unique in its implementation method, was developed and incorporated in the solid-phase reactor to separate the process liquid produced in the first reactor. Experiments were carried out to assess the long term performance of the two-phase reactor with respect to biogas production, volatile solids reduction, pH and number of occurrence of clogging in the filtering system or choking in the process liquid transfer line. The system performed well and was operated successfully without the occurrence of clogging or any other disruptions throughout. Biogas production of 0.86-0.889m(3)kg(-1)VS, at OLR of 1.11-1.585kgm(-3)d(-1), were obtained from vegetable market waste, which were higher than the results reported for similar substrates digested in two-phase reactors. The VS reduction was 82-86%. The two-phase anaerobic digestion system was demonstrated to be stable and suitable for the treatment of VMW fraction of MSW for energy generation.

  1. Seeing Technology through Five Phases: A Theoretical Framing to Articulate Holism, Ethics and Critique in, and for, Technological Literacy

    Science.gov (United States)

    Keirl, Steve

    2009-01-01

    This article presents a tentative framing that has emerged out of one person's theorised and reflective professional practice with pre-service primary and secondary Design and Technology teachers as well as with practising teachers, school leadership teams and curriculum policy designers and writers. Over many years, several curricular and…

  2. Study of phase change technology for computer memory using Se70Te30-xAgx system

    Science.gov (United States)

    Kumar, A.; Agarwal, Pragya; Saxena, Abhay

    2013-06-01

    The phase change memory is the revolutionary technology for computer world today. Phase change memory alloy is composed of chalcogenide glasses. In the present work Ag is doped in binary Se70Te30 system and activation energy of crystallization is calculated. These ternary alloys are explored in various fields like photo doping, optical imaging, and phase change optical recording. The crystallization kinetics of various ternary Se70Te30-xAgx(x = 0,2,4,6) alloys are studied by using Non-isothermal Iso-Conversional methods. The dependence of activation energy Ec is discussed by various methods. The result shows that the activation energy Ec plays a vital role in proving these materials as best applicable materials in optical phase change recording devices.

  3. Nano-Phase Powder Based Exothermic Braze Repair Technology For RCC Materials Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Phase II project will advance innovative, cost effective and reliable nano-phase exothermic RCC joining processes (ExoBrazeTM) in order to be able to reinforce...

  4. Treatment technologies of liquid and solid wastes from two-phase olive oil mills

    Directory of Open Access Journals (Sweden)

    Rincón, Bárbara

    2006-03-01

    Full Text Available Over the last 10 years the manufacture of olive oil has undergone important evolutionary changes in the equipment used for the separation of olive oil from the remaining components. The latest development has been the introduction of a two-phase centrifugation process in which a horizontally-mounted centrifuge is used for a primary separation of the olive oil fraction from the vegetable solid material and vegetation water. Therefore, the new two-phase olive oil mills produce three identifiable and separate waste streams. These are: 1 the wash waters from the initial cleansing of the fruit; 2 the wash waters from the secondary centrifuge and 3 the aqueous solid residues from the primary centrifugation. As well as offering process advantages they also reduce the water consumption of the mill. The introduction of this technology was carried out in 90% of Spanish olive oil factories. Therefore, the new twophase olive mill effluents (TPOME are made up of the mixture of effluents (1 and (2, the total volume of TPOME generated being around 0.25 l/kg of olives processed. In addition, the solid residue (two-phase olive pomace, TPOP has a high organic matter concentration giving an elevated polluting load and it cannot be easily handled by traditional technology which deals with the conventional three-phase olive cake.So, this paper aims to report the main features and characteristics of TPOME, and of TPOP, as compared to the classical olive mill wastewater (OMW and olive cake derived from the three-phase manufacturing process. The advantages and disadvantages of the two-phase decanting process will be summarized. Among the treatments reported for TPOME, aerobic processes in completely mixed and activated sludge reactor showed high COD removal efficiencies. Kinetic constants of the aerobic processes were also compared at different operational conditions. The report also includes the following findings: assays of anaerobic digestion of wastewaters from the

  5. Integrated Mission Precision Attack Cockpit Technology (IMPACT). Phase 1: Identifying Technologies for Air-to-Ground Fighter Integration.

    Science.gov (United States)

    1994-10-31

    also used as a "first cut" assessment of thebe oud n hediscussion section. Emphasis technologies. The next set of ratings be found in the presented (see...and control aircraft orbiting a display, giving Jack a real time, accurate,secure update of the enemy ground order of 49 battle . What a quantum leap...CAS aircraft were multiple friendly and enemy forces are intermixed (tanks on battle field), but for long distant deliveries of advanced weapons from

  6. Utility advanced turbine systems (ATS) technology readiness testing -- Phase 3. Technical progress report, October 1--December 31, 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    The overall objective of the Advanced Turbine System (ATS) Phase 3 Cooperative Agreement between GE and US Department of Energy (DOE) is the development of the GE 7H and 9H combined cycle power systems. The major effort will be expended on detail design. Validation of critical components and technologies will be performed including: hot gas path component testing, sub-scale compressor testing, steam purity test trials, and rotational heat transfer confirmation testing. Processes will be developed to support the manufacture of the first system, which was to have been sited and operated in Phase 4 but will now be sited and operated commercially by GE. This change has resulted from DOE`s request to GE for deletion of Phase 4 in favor of a restructured Phase 3 (as Phase 3R) to include full speed, no load (FSNL) testing of the 7H gas turbine. Technology enhancements that are not required for the first machine design but will be critical for future ATS advances in performance, reliability, and costs will be initiated. Long-term tests of materials to confirm design life predictions will continue. A schematic of the GE H machine is shown. This report summarizes work accomplished in 4Q97.

  7. Dual phase vacuum extraction technology for the recovery of petroleum hydrocarbon contamination from the subsurface : a case study

    Energy Technology Data Exchange (ETDEWEB)

    Kallur, V.G.; Agar, J.G.; Wong, T.T.; Naus, J. [O' Connor Associates Environmental Inc., Calgary, AB (Canada); Michielsen, A.P. [Imperial Oil Ltd., Burnaby, BC (Canada)

    2003-07-01

    This paper presents a case history concerning the application of dual phase vacuum extraction (DPVE) technology for the remediation of subsurface petroleum hydrocarbon (PHC) contamination in silty soils at a service station site located in Vancouver, British Columbia. It also summarized the design and performance monitoring results for the site, in conjunction with the performance monitoring results from similar DPVE systems in operation at 7 other sites in western Canada. Each of these sites is underlain by both fine-grained and coarser grained sandy soils. The study offers useful design guidance and insight on the practical limitations of DPVE technology for PHC remediation. 2 refs., 6 tabs., 4 figs.

  8. High temperature turbine technology program. Phase II. Technology test and support studies. Annual technical progress report, January 1, 1979-December 31, 1979

    Energy Technology Data Exchange (ETDEWEB)

    1980-01-01

    Work performed on the High Temperature Turbine Technology Program, Phase II - Technology Test and Support Studies during the period from January 1, 1979 through December 31, 1979 is summarized. Objectives of the program elements as well as technical progress and problems encountered during this Phase II annual reporting period are presented. Progress on design, fabrication and checkout of test facilities and test rigs is described. LP turbine cascade tests were concluded. 350 hours of testing were conducted on the LP rig engine first with clean distillate fuel and then with fly ash particulates injected into the hot gas stream. Design and fabrication of the turbine spool technology rig components are described. TSTR 60/sup 0/ sector combustor rig fabrication and testing are reviewed. Progress in the design and fabrication of TSTR cascade rig components for operation on both distillate fuel and low Btu gas is described. The new coal-derived gaseous fuel synthesizing facility is reviewed. Results and future plans for the supporting metallurgical programs are discussed.

  9. Emerging Communication Technologies (ECT) Phase 2 Report. Volume 1; Main Report

    Science.gov (United States)

    Bastin, Gary L.; Harris, William G.; Chiodini, Robert; Nelson, Richard A.; Huang, PoTien; Kruhm, David A.

    2003-01-01

    The Emerging Communication Technology (ECT) project investigated three First Mile communication technologies in support of NASA s Second Generation Reusable Launch Vehicle (2nd Gen RLV), Orbital Space Plane, Advanced Range Technology Working Group (ARTWG) and the Advanced Spaceport Technology Working Group (ASTWG). These First Mile technologies have the purpose of interconnecting mobile users with existing Range Communication infrastructures. ECT was a continuation of the Range Information System Management (RISM) task started in 2002. RISM identified the three advance communication technologies investigated under ECT. These were Wireless Ethernet (Wi-Fi), Free Space Optics (FSO), and Ultra Wideband (UWB). Due to the report s size, it has been broken into three volumes: 1) Main Report 2) Appendices 3) UWB.

  10. Industrialization study, phase 2. [assessment of advanced photovoltaic technologies for commerical development

    Science.gov (United States)

    1979-01-01

    The potentials and requirements of advanced photovoltaic technologies still in their early developmental stages were evaluated and compared to the present day single crystal silicon wafer technology and to each other. The major areas of consideration include polycrystalline and amorphous silicon, single crystal and polycrystalline gallium arsenide, and single crystal and polycrystalline cadmium sulfide. A rank ordering of the advanced technologies is provided. The various ranking schemes were based upon present-day efficiency levels, their stability and long-term reliability prospects, material availability, capital investments both at the laboratory and production level, and associated variable costs. An estimate of the timing of the possible readiness of these advanced technologies for technology development programs and industrialization is presented along with a set of recommended government actions concerning the various advanced technologies.

  11. Baseline Study Methodology for Future Phases of Research on Nuclear Power Plant Control Room Technologies

    Energy Technology Data Exchange (ETDEWEB)

    Le Blanc, Katya Lee [Idaho National Lab. (INL), Idaho Falls, ID (United States); Bower, Gordon Ross [Idaho National Lab. (INL), Idaho Falls, ID (United States); Hill, Rachael Ann [Idaho National Lab. (INL), Idaho Falls, ID (United States); Spielman, Zachary Alexander [Idaho National Lab. (INL), Idaho Falls, ID (United States); Rice, Brandon Charles [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-07-01

    In order to provide a basis for industry adoption of advanced technologies, the Control Room Upgrades Benefits Research Project will investigate the benefits of including advanced technologies as part of control room modernization This report describes the background, methodology, and research plan for the first in a series of full-scale studies to test the effects of advanced technology in NPP control rooms. This study will test the effect of Advanced Overview Displays in the partner Utility’s control room simulator

  12. Development of ITM Oxygen Technology for Integration in IGCC and Other Advanced Power Generation DECISION POINT 1 UNDER PHASE 3

    Energy Technology Data Exchange (ETDEWEB)

    Anderson, Lori

    2013-08-01

    Air Products and the DOE have partnered over a number of years in the development of ITM Oxygen technology in support of gasification technology. Throughout this process, studies of application of the technology to IGCC and oxy-coal combustion have shown significant reduction in capital and operating costs compared to similar systems using conventional cryogenic air separation. Phase 3, the current phase of the program, focuses on the design, construction and operation of a 30- to 100-TPD pilot facility, the Intermediate Scale Test Unit (ISTU). Execution of this phase to date has resulted in significant advances in a number of areas including ceramic membrane material development, module design and production, ceramic-to-metal seal design, process control strategies, and engineering development of process cycles. Phase 3 will be complete upon successful operation of the ISTU in a series of tests making oxygen from ceramic membrane modules and producing power from a hot gas expander. Phase 3 work has extended beyond the planned schedule due to a delay in delivery of equipment from vendors. Air Products is currently managing the equipment delay by close involvement with the vendor to redesign the problematic equipment and oversee its fabrication. The result of these unforeseen challenges is that the ISTU project completion date has been delayed. Tight cost controls have been implemented both by DOE program management and APCI to meet budget constraints despite increased costs due to budget delays. Total project costs have increased in several areas. Increased costs in the ISTU project include purchased equipment, instruments, construction, and contractor engineering. Increased costs for other tasks include additional work in support of module production by Ceramatec, Inc, and increased Air Products labor for component testing. Air Products plans to complete testing as outlined in the SOPO and successfully complete all project objectives by the end of FY14.

  13. An experimental indoor phasing system based on active optics using dispersed Hartmann sensing technology in the visible waveband

    Institute of Scientific and Technical Information of China (English)

    Yong Zhang; Gen-Rong Liu; Yue-Fei Wang; Ye-Ping Li; Ya-Jun Zhang; Liang Zhang; Yi-Zhong Zeng; Jie Zhang

    2011-01-01

    A telescope with a larger primary mirror can collect much more light and resolve objects much better than one with a smaller mirror,and so the larger version is always pursued by astronomers and astronomical technicians.Instead of using a monolithic primary mirror,more and more large telescopes,which are currently being planned or in construction,have adopted a segmented primary mirror design.Therefore,how to sense and phase such a primary mirror is a key issue for the future of extremely large optical/infrared telescopes.The Dispersed Fringe Sensor (DFS),or Dispersed Hartmann Sensor (DHS),is a non-contact method using broadband point light sources and it can estimate the piston by the two-directional spectrum formed by the transmissive grating's dispersion and lenslet array.Thus it can implement the combination of co-focusing by Shack-Hartmann technology and phasing by dispersed fringe sensing technologies such as the template-mapping method and the Hartmann method.We introduce the successful design,construction and alignment of our dispersed Hartmann sensor together with its design principles and simulations.We also conduct many successful real phasing tests and phasing corrections in the visible waveband using our existing indoor segmented mirror optics platform.Finally,some conclusions are reached based on the test and correction of experimental results.

  14. DE-FOA-EE0005502 Advanced Percussive Drilling Technology for Geothermal Exploration and Development Phase II Report.

    Energy Technology Data Exchange (ETDEWEB)

    Su, Jiann-Cherng [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Raymond, David W. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Prasad, Somuri V. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Wolfer, Dale R. [Atlas-Copco Secoroc, LLC, Fagersta (Sweden)

    2017-05-01

    Percussive hammers are a promising advance in drilling technology for geothermal since they rely upon rock reduction mechanisms that are well-suited for use in the hard, brittle rock characteristic of geothermal formations. The project research approach and work plan includes a critical path to development of a high-temperature (HT) percussive hammer using a two- phase approach. The work completed in Phase I of the project demonstrated the viability of percussive hammers and that solutions to technical challenges in design, material technology, and performance are likely to be resolved. Work completed in Phase II focused on testing the findings from Phase I and evaluating performance of the materials and designs at high- operating temperatures. A high-operating temperature (HOT) drilling facility was designed, built, and used to test the performance of the DTH under extreme conditions. Results from the testing indicate that a high-temperature capable hammer can be developed and is a viable alternative for user in the driller's toolbox.

  15. Technology needs for the later phases of an oil spill. Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    Goodman, R. [Innovative Ventures Ltd., Cochrane, AB (Canada)

    2007-07-01

    The phases of an oil spill response can be classified as initial response, project phase, end phase and the monitoring phase. The initial on-water phase of the response or shoreline cleanup includes the development of contingency planning, stockpiling of equipment and research into response equipment for removing oil on water. Lack of planning for a response can lead to an initial response that has less than satisfactory results. An initial assessment of the oil spill response begins at the moment the spill occurs and continues for days, depending on the quality of the initial response. This phase includes the use of booms, skimmers, dispersants and in-situ burning. It was emphasized that oil spill research should focus on gathering scientific information needed to make decisions during the project phase and beyond. Typically, this will involve the study of long-term impacts and should be undertaken in a research environment in order to apply new data to any spill scenario. This paper highlighted knowledge needs to support decisions in the cleanup phase. The Exxon Valdez incident provided information on the long-term impacts of a variety of cleanup techniques. This paper also addressed damage assessment and restoration issues along with the decision to terminate a response. Once a response has been terminated, long-term monitoring of the ecosystem begins in order to identify the spill impact. 9 refs., 6 figs.

  16. Spacecraft Thermal Management using Advanced Hybrid Two-Phase Loop Technology

    Science.gov (United States)

    2007-02-01

    HYBRID TWO-PHASE LOOPS The schematic of the Hybrid Two-Phase Loop (HTPL) used for a thermal testing is shown in Figure 3. Main components for the...hybrid two-phase loop with single evaporator. The thermal test starts first by turning on the liquid pump to circulate liquid along the loop. Once the...Vapor Out Evaporator Body (E1) Evaporator Body (E2) Total Heat Input Heat Input (E1) Heat Input (E2) Thermal Resistance (E1) FIGURE 10. Thermal test results

  17. Performance Evaluation of Advanced Retrofit Roof Technologies Using Field-Test Data Phase Three Final Report, Volume 2

    Energy Technology Data Exchange (ETDEWEB)

    Biswas, Kaushik [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Childs, Phillip W. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Atchley, Jerald Allen [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2015-01-01

    This article presents some miscellaneous data from two low-slope and two steep-slope experimental roofs. The low-slope roofs were designed to compare the performance of various roof coatings exposed to natural weatherization. The steep-slope roofs contained different combinations of phase change material, rigid insulation, low emittance surface and above-sheathing ventilation, with standing-seam metal panels on top. The steep-slope roofs were constructed on a series of adjacent attics separated at the gables using thick foam insulation. This article describes phase three (3) of a study that began in 2009 to evaluate the energy benefits of a sustainable re-roofing technology utilizing standing-seam metal roofing panels combined with energy efficient features like above-sheathing-ventilation (ASV), phase change material (PCM) and rigid insulation board. The data from phases 1 and 2 have been previously published and reported [Kosny et al., 2011; Biswas et al., 2011; Biswas and Childs, 2012; Kosny et al., 2012]. Based on previous data analyses and discussions within the research group, additional test roofs were installed in May 2012, to test new configurations and further investigate different components of the dynamic insulation systems. Some experimental data from phase 3 testing from May 2012 to December 2013 and some EnergyPlus modeling results have been reported in volumes 1 and 3, respectively, of the final report [Biswas et al., 2014; Biswas and Bhandari, 2014].

  18. Characterization of aqueous two phase systems by combining lab-on-a-chip technology with robotic liquid handling stations.

    Science.gov (United States)

    Amrhein, Sven; Schwab, Marie-Luise; Hoffmann, Marc; Hubbuch, Jürgen

    2014-11-07

    Over the last decade, the use of design of experiment approaches in combination with fully automated high throughput (HTP) compatible screenings supported by robotic liquid handling stations (LHS), adequate fast analytics and data processing has been developed in the biopharmaceutical industry into a strategy of high throughput process development (HTPD) resulting in lower experimental effort, sample reduction and an overall higher degree of process optimization. Apart from HTP technologies, lab-on-a-chip technology has experienced an enormous growth in the last years and allows further reduction of sample consumption. A combination of LHS and lab-on-a-chip technology is highly desirable and realized in the present work to characterize aqueous two phase systems with respect to tie lines. In particular, a new high throughput compatible approach for the characterization of aqueous two phase systems regarding tie lines by exploiting differences in phase densities is presented. Densities were measured by a standalone micro fluidic liquid density sensor, which was integrated into a liquid handling station by means of a developed generic Tip2World interface. This combination of liquid handling stations and lab-on-a-chip technology enables fast, fully automated, and highly accurate density measurements. The presented approach was used to determine the phase diagram of ATPSs composed of potassium phosphate (pH 7) and polyethylene glycol (PEG) with a molecular weight of 300, 400, 600 and 1000 Da respectively in the presence and in the absence of 3% (w/w) sodium chloride. Considering the whole ATPS characterization process, two complete ATPSs could be characterized within 24h, including four runs per ATPS for binodal curve determination (less than 45 min/run), and tie line determination (less than 45 min/run for ATPS preparation and 8h for density determination), which can be performed fully automated over night without requiring man power. The presented methodology provides

  19. Coherence-controlled holographic microscopy principle embodiment into Q-PHASE microscope: story of a successful technology transfer

    Science.gov (United States)

    Lostak, M.; Chmelik, R.

    2016-03-01

    Curiously, the coherence-controlled holographic microscopy (CCHM) was brought into the world owing to the endeavor of Chmelik's team at Brno University of Technology (BUT) to avoid scanning in confocal microscopy. As coherence gating seemed to be the way, the Leith & Upatnieks proposal of incoherent holography had been considered attractive. Their method made interference system free from strict dependence on both spatial and temporal coherence. Off axis holographic system proposed on such basis has been proved capable of coherence based depth discrimination in single wide-field shot in reflected-light arrangement. Consequently, extremely low-coherence holographic imaging had been found highly contributive also to the image quality depriving it from coherence artefacts and improving its transversal resolution. This is why CCHM promised high precision of quantitative phase imaging (QPI) in transmitted light set up that was realized for cell biology. However the cost of necessarily complicated optical design and need of very precise mechanics forced the team of prof Chmelik at BUT to search for a company capable of mastering the instrument. It was TESCAN ORSAY the highly successful scanning electron microscopes producer that finally took charge of the commercial design. Long-term collaboration of the company with BUT made possible both the CCHM technology successful transfer up to Q-PHASE microscope production as well as the company Light microscopy division reinforcement. This contribution merges views of CCHM technology author and the TESCAN development team.

  20. Optimized condition for etching fused-silica phase gratings with inductively coupled plasma technology.

    Science.gov (United States)

    Wang, Shunquan; Zhou, Changhe; Ru, Huayi; Zhang, Yanyan

    2005-07-20

    Polymer deposition is a serious problem associated with the etching of fused silica by use of inductively coupled plasma (ICP) technology, and it usually prevents further etching. We report an optimized etching condition under which no polymer deposition will occur for etching fused silica with ICP technology. Under the optimized etching condition, surfaces of the fabricated fused silica gratings are smooth and clean. Etch rate of fused silica is relatively high, and it demonstrates a linear relation between etched depth and working time. Results of the diffraction of gratings fabricated under the optimized etching condition match theoretical results well.

  1. Phase 1 report on sensor technology, data fusion and data interpretation for site characterization

    Energy Technology Data Exchange (ETDEWEB)

    Beckerman, M.

    1991-10-01

    In this report we discuss sensor technology, data fusion and data interpretation approaches of possible maximal usefulness for subsurface imaging and characterization of land-fill waste sites. Two sensor technologies, terrain conductivity using electromagnetic induction and ground penetrating radar, are described and the literature on the subject is reviewed. We identify the maximum entropy stochastic method as one providing a rigorously justifiable framework for fusing the sensor data, briefly summarize work done by us in this area, and examine some of the outstanding issues with regard to data fusion and interpretation. 25 refs., 17 figs.

  2. CO2 capture technologies: current status and new directions using supported ionic liquid phase (SILP) absorbers

    DEFF Research Database (Denmark)

    Kolding, Helene; Fehrmann, Rasmus; Riisager, Anders

    2012-01-01

    Current state-of-the-art techniques for CO2 capture are presented and discussed. Post-combustion capture of CO2 by absorption is the technology most easily retrofitted to existing installations, but at present this is not economically viable to install and run. Using ionic liquids instead...... candidate for CO2 absorption using SILP technology. Thus a solid SILP absorber comprised of 40 wt% [N6666][Pro] loaded on precalcined silica quantitatively takes up about 1.2 mole CO2 per mole of ionic liquid in consecutive absorption-desorption cycles in a flow-experiment performed with 0.09 bar of CO2 (9......% CO2 in He)....

  3. CO2 capture technologies: current status and new directions using supported ionic liquid phase (SILP) absorbers

    DEFF Research Database (Denmark)

    Kolding, Helene; Fehrmann, Rasmus; Riisager, Anders

    2012-01-01

    Current state-of-the-art techniques for CO2 capture are presented and discussed. Post-combustion capture of CO2 by absorption is the technology most easily retrofitted to existing installations, but at present this is not economically viable to install and run. Using ionic liquids instead...... candidate for CO2 absorption using SILP technology. Thus a solid SILP absorber comprised of 40 wt% [N6666][Pro] loaded on precalcined silica quantitatively takes up about 1.2 mole CO2 per mole of ionic liquid in consecutive absorption-desorption cycles in a flow-experiment performed with 0.09 bar of CO2 (9......% CO2 in He)....

  4. How to Improve SBIR Phase 3 Technology Commercialization Effectiveness: A NASA Glenn Internal Assessment

    Science.gov (United States)

    Horsham, Gary A. P.

    1999-01-01

    Governmental departments and agencies with responsibilities for implementing the Small Business Innovative Research program under the auspices of the Small Business Administration, are now required to be more accountable for phase 3 performance. At NASA Glenn Research Center, internal, one-on-one interviews were conducted with seven contracting officer technical representatives who have managed one or more SBIR contracts through completion of phase 2. A questionnaire consisting of nineteen questions was formulated and used for the above purpose. This self-assessment produced several comments, conclusions, and recommendations for consideration and potential application.

  5. Utility advanced turbine systems (ATS) technology readiness testing -- Phase 3. Annual report, October 1, 1996--September 30, 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    The overall objective of the Advanced Turbine System (ATS) Phase 3 Cooperative Agreement between GE and the US Department of Energy (DOE) is the development of the GE 7H and 9H combined cycle power systems. The major effort will be expended on detail design. Validation of critical components and technologies will be performed including: hot gas path component testing, sub-scale compressor testing, steam purity test trials, and rotational heat transfer confirmation testing. Processes will be developed to support the manufacture of the first system. Technology enhancements that are not required for the first machine design but will be critical for future ATS advances in performance, reliability, and costs will be initiated. Long-term tests of materials to confirm design life predictions will continue. A schematic of the GE H machine is shown.

  6. Summary Report on Phase I Results from the 3D Printing in Zero G Technology Demonstration Mission, Volume I

    Science.gov (United States)

    Prater, T. J.; Bean, Q. A.; Beshears, R. D.; Rolin, T. D.; Werkheiser, N. J.; Ordonez, E. A.; Ryan, R. M.; Ledbetter, F. E., III

    2016-01-01

    Human space exploration to date has been confined to low-Earth orbit and the Moon. The International Space Station (ISS) provides a unique opportunity for researchers to prove out the technologies that will enable humans to safely live and work in space for longer periods of time and venture beyond the Earth/Moon system. The ability to manufacture parts in-space rather than launch them from Earth represents a fundamental shift in the current risk and logistics paradigm for human spaceflight. In September 2014, NASA, in partnership with Made In Space, Inc., launched the 3D Printing in Zero-G technology demonstration mission to explore the potential of additive manufacturing for in-space applications and demonstrate the capability to manufacture parts and tools on orbit using fused deposition modeling. This Technical Publication summarizes the results of testing to date of the ground control and flight prints from the first phase of this ISS payload.

  7. A Phase Change Memory Chip Based on TiSbTe Alloy in 40-nm Standard CMOS Technology

    Institute of Scientific and Technical Information of China (English)

    Zhitang Song; YiPeng Zhan; Daolin Cai; Bo Liu; Yifeng Chen; Jiadong Ren

    2015-01-01

    In this letter, a phase change random access memory (PCRAM) chip based on Ti0.4Sb2Te3 alloy material was fabricated in a 40-nm 4-metal level complementary metal-oxide semiconductor (CMOS) technology. The phase change resistor was then integrated after CMOS logic fabrication. The PCRAM was successfully embedded without changing any logic device and process, in which 1.1 V negative-channel metal-oxide semiconductor device was used as the memory cell selector. The currents and the time of SET and RESET operations were found to be 0.2 and 0.5 mA, 100 and 10 ns, respectively. The high speed performance of this chip may highlight the design advantages in many embedded applications.

  8. 无线电鉴相定位技术的改进%Optimization of wireless phase discrimination positioning technology

    Institute of Scientific and Technical Information of China (English)

    吴双娥; 萧宝瑾

    2012-01-01

    In the current positioning technology.it can achieve centimeter-level positioning system which costs much, while in the low cost of the system it can't achieve centimeter-level accuracy. This scheme which uses radio phase discrimination positioning technology discriminate phase to carrier signal can make the positioning accuracy reaches 1 cm. The method is in locomotive orbit at each end to install a radio transmitter, and in locomotive to install receiver, when a locomotive moving in orbit road receives two columns of radio waves which will produce the phase difference, and then uses the phase difference to determine the position of the locomotive. In the improvement scheme uses modulation technology,multiplier technology,and the Windom antenna receives two columns of radio waves,so that the system structure is simple,low cost,high reliability.%在目前的定位技术中,能够实现厘米级定位的系统造价高,而造价低的系统精度达不到厘米级.本方案利用无线电鉴相定位技术,对载波信号进行鉴相,可使定位精度达到1 cm.其方法是在机车轨道两端各安装一个无线电发射机,机车上安装接收机,当机车在轨道上行驶时,接收到的2列无线电波会产生相位差,利用这个相位差来确定机车的位置.在改进方案中采用了调制技术和倍频技术,并采用温顿天线同时接收2列无线电波,从而使该系统结构简单、成本低、可靠性高.

  9. Screening of high melting point phase change materials (PCM) in solar thermal concentrating technology based on CLFR

    Energy Technology Data Exchange (ETDEWEB)

    Hoshi, Akira [Ichinoseki National College of Technology (Japan). Dept. of Mechanical Engineering; Mills, D.R.; Bittar, A. [University of Sydney (Australia). School of Physics; Saitoh, T.S. [Tohoku University, Sendai (Japan). Graduate School of Environmental Studies

    2005-09-01

    We have investigated the suitability of high melting point phase change materials for use in new, large scale solar thermal electricity plants. Candidate materials for latent heat thermal energy storage are identified and their operating parameters modeled and analysed. The mathematical characteristics of charging and discharging these storage materials are discussed. Several high melting point, high conductivity materials are shown to be suitable and advantageous for use with solar thermal electricity plants, such as Sydney University's novel, low cost CLFR and MTSA collector systems, as well as existing parabolic trough and tower technologies. (author)

  10. Solid Polymer Electrolyte (SPE) fuel cell technology, program review, phase 2

    Science.gov (United States)

    1976-01-01

    The purpose of the solid polymer electrolyte (SPE) fuel cell program is to advance the SPE fuel cell technology in four target areas. These areas are: (1) reduced fuel cell costs; (2) reduced fuel cell weight; (3) improved fuel cell efficiency; and (4) increased systems compatibility.

  11. A Review on Applicability of Big Data Technology in Nuclear Power Plant : Focused on O and M Phases

    Energy Technology Data Exchange (ETDEWEB)

    Cha, Jae-Min; Shin, Junguk Shin; Yeom, Choong-Sub [Institute for Advanced Engineering, Yongin (Korea, Republic of)

    2015-05-15

    With the rapid growth of information and communication technology (ICT), data has been explosively increasing. It is the most important component of big data concept which derives values from the data. Recently, big data technology has been applied to plant industry such as oil and gas plant, steel and iron plant, and power plant as well as traditional industries including communication, manufacturing, distribution, banking, and so on. It means that the big data technology has a high opportunity to enhance operational performance from tremendous data collected from numerous sensors, which are generally attached to the Structures, Systems, and Components (SSCs). Gartner reported that 'the big data has high potential opportunities in Manufacturing and Natural Resource industry sector'. In the paper, we analyze the applicability of the big data technology in the NPP focusing on O and M phase. For this, the following sequence of process: Operational concept definition, Problem analysis, Needs derivation is conducted. This research has some limitations as follows. 1) Only monitoring and diagnosis part in the operational phase is considered in the whole plant lifecycle activities. That is, the necessity of big data should be derived in the comprehensive and diverse viewpoints. 2) Target interviewee is too small. That is, the more interviewee should be considered to increase the credibility of the research results. In the further study, to overcome the limitations of this research, we plan to validate the necessity via quantitative survey methods with more experts in the various plant cycles. We also attempt to show the practical impacts of big data through the practical application into the NPP.

  12. International academic program in technologies of light-water nuclear reactors. Phases of development and implementation

    Science.gov (United States)

    Geraskin, N. I.; Glebov, V. B.

    2017-01-01

    The results of implementation of European educational projects CORONA and CORONA II dedicated to preserving and further developing nuclear knowledge and competencies in the area of technologies of light-water nuclear reactors are analyzed. Present article addresses issues of design and implementation of the program for specialized training in the branch of technologies of light-water nuclear reactors. The systematic approach has been used to construct the program for students of nuclear specialties, which corresponding to IAEA standards and commonly accepted nuclear principles recognized in the European Union. Possibilities of further development of the international cooperation between countries and educational institutions are analyzed. Special attention is paid to e-learning/distance training, nuclear knowledge preservation and interaction with European Nuclear Education Network.

  13. New Technology for Oil/Water Emulsion Treatment: Phases I and II

    Science.gov (United States)

    1998-05-15

    to make informed decisions regarding the selection of O/W separators, bearing in mind that separation technologies have varying capital and...Transportable Wastewater Treatment: Technical Report on Heavy Metal- Bearing Wastewater of Sites Report. Contract F41624-D-8137, Delivery Order 0003...10% solids, and experience some decrease in efficiency unless operated at far less than 10% solids. Viscous or gummy liquids can decrease

  14. Nano-Launcher Technologies, Approaches, and Life Cycle Assessment. Phase II

    Science.gov (United States)

    Zapata, Edgar

    2014-01-01

    Assist in understanding NASA technology and investment approaches, and other driving factors, necessary for enabling dedicated nano-launchers by industry at a cost and flight rate that (1) could support and be supported by an emerging nano-satellite market and (2) would benefit NASAs needs. Develop life-cycle cost, performance and other NASA analysis tools or models required to understand issues, drivers and challenges.

  15. Solid polymer electrolyte (SPE) fuel cell technology program, phase 1/1A. [design and fabrication

    Science.gov (United States)

    1975-01-01

    A solid polymer electrolyte fuel cell was studied for the purpose of improving the characteristics of the technology. Several facets were evaluated, namely: (1) reduced fuel cell costs; (2) reduced fuel cell weight; (3) improved fuel cell efficiency; and (4) increased systems compatibility. Demonstrated advances were incorporated into a full scale hardware design. A single cell unit was fabricated. A substantial degree of success was demonstrated.

  16. Design of Training Systems, Phase II-A Report. An Educational Technology Assessment Model (ETAM)

    Science.gov (United States)

    1975-07-01

    display tube that may be less expensive than sequences developed manually. The Walt Disney studios have an extensive technology for creating animation...the-ordinary demands. His perceptions can be- come stereotyped so that he operates on the minimum standard format. His per- formance now becomes...an explicit, external format for a task is that the structure may be inappropriate, or that it will unduly tyrannize and stereotype a task which

  17. Materials, process, product analysis of coal process technology. Phase I final report

    Energy Technology Data Exchange (ETDEWEB)

    Saxton, J. C.; Roig, R. W.; Loridan, A.; Leggett, N. E.; Capell, R. G.; Humpstone, C. C.; Mudry, R. N.; Ayres, E.

    1976-02-01

    The purpose of materials-process-product analysis is a systematic evaluation of alternative manufacturing processes--in this case processes for converting coal into energy and material products that can supplement or replace petroleum-based products. The methodological steps in the analysis include: Definition of functional operations that enter into coal conversion processes, and modeling of alternative, competing methods to accomplish these functions; compilation of all feasible conversion processes that can be assembled from combinations of competing methods for the functional operations; systematic, iterative evaluation of all feasible conversion processes under a variety of economic situations, environmental constraints, and projected technological advances; and aggregative assessments (economic and environmental) of various industrial development scenarios. An integral part of the present project is additional development of the existing computer model to include: A data base for coal-related materials and coal conversion processes; and an algorithmic structure that facilitates the iterative, systematic evaluations in response to exogenously specified variables, such as tax policy, environmental limitations, and changes in process technology and costs. As an analytical tool, the analysis is intended to satisfy the needs of an analyst working at the process selection level, for example, with respect to the allocation of RDandD funds to competing technologies.

  18. Multi-fuel reformers for fuel cells used in transportation: Assessment of hydrogen storage technologies. Phase 2: Final report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-05-01

    During Phase 1 of this program, the authors evaluated all known hydrogen storage technologies (including those that are now practiced and those that are development) in the context of fuel cell vehicles. They determined that among the development technologies, carbon sorbents could most benefit from closer scrutiny. During Phase 2 of this program, they tested ten different carbon sorbents at various practical temperatures and pressures, and developed the concept of the usable Capacity Ratio, which is the ratio of the mass of hydrogen that can be released from a carbon-filled tank to the mass of hydrogen that can be released from an empty tank. The authors also commissioned the design, fabrication, and NGV2 (Natural Gas Vehicle) testing of an aluminum-lined, carbon-composite, full-wrapped pressure vessel to store hydrogen at 78 K and 3,000 psi. They constructed a facility to pressure cycle the tank at 78 K and to temperature cycle the tank at 3,000 psi, tested one such tank, and submitted it for a burst test. Finally, they devised a means by which cryogenic compressed hydrogen gas tanks can be filled and discharged using standard hardware--that is, without using filters, valves, or pressure regulators that must operate at both low temperature and high pressure. This report describes test methods and test results of carbon sorbents and the design of tanks for cold storage. 7 refs., 91 figs., 10 tabs.

  19. Advanced Communications Technology Satellite (ACTS). Phase 1: Industrial/academic experimenters

    Science.gov (United States)

    Maisel, James E.; Nowlin, Robert W.

    1992-01-01

    This report presents the work done at Arizona State University under the ACTS Experimenters Program. The main thrust of the Program was to develop experiments to test, evaluate, and prove the commercial worthiness of the ACTS satellite which is scheduled for launch in 1993. To accomplish this goal, meetings were held with various governmental, industrial, and academic units to discuss the ACTS satellite and its technology and possible experiments that would generate industrial interest and support for ASU's efforts. Several local industries generated several experiments of their own. The investigators submitted several experiments of educational, medical, commercial, and technical value and interest. The disposition of these experimental proposals is discussed in this report.

  20. Liquid phase crystallized silicon on glass: Technology, material quality and back contacted heterojunction solar cells

    Science.gov (United States)

    Haschke, Jan; Amkreutz, Daniel; Rech, Bernd

    2016-04-01

    Liquid phase crystallization has emerged as a novel approach to grow large grained polycrystalline silicon films on glass with high electronic quality. In recent years a lot of effort was conducted by different groups to determine and optimize suitable interlayer materials, enhance the crystallographic quality or to improve post crystallization treatments. In this paper, we give an overview on liquid phase crystallization and describe the necessary process steps and discuss their influence on the absorber properties. Available line sources are compared and different interlayer configurations are presented. Furthermore, we present one-dimensional numerical simulations of a rear junction device, considering silicon absorber thicknesses between 1 and 500 µm. We vary the front surface recombination velocity as well as doping density and minority carrier lifetime in the absorber. The simulations suggest that a higher absorber doping density is beneficial for layer thicknesses below 20 µm or when the minority carrier lifetime is short. Finally, we discuss possible routes for device optimization and propose a hybride cell structure to circumvent current limitations in device design.

  1. Production of ethanol from refinery waste gases. Phase 2, technology development, annual report

    Energy Technology Data Exchange (ETDEWEB)

    Arora, D.; Basu, R.; Phillips, J.R.; Wikstrom, C.V.; Clausen, E.C.; Gaddy, J.L.

    1995-07-01

    Oil refineries discharge large volumes of H{sub 2}, CO, and CO{sub 2} from cracking, coking, and hydrotreating operations. This program seeks to develop a biological process for converting these waste gases into ethanol, which can be blended with gasoline to reduce emissions. Production of ethanol from all 194 US refineries would save 450 billion BTU annually, would reduce crude oil imports by 110 million barrels/year and emissions by 19 million tons/year. Phase II efforts has yielded at least 3 cultures (Clostridium ljungdahlii, Isolate O-52, Isolate C-01) which are able to produce commercially viable concentrations of ethanol from CO, CO{sub 2}, and H{sub 2} in petroleum waste gas. Single continuous stirred tank reactor studies have shown that 15-20 g/L of ethanol can be produced, with less than 5 g/L acetic acid byproduct. Culture and reactor optimization in Phase III should yield even higher ethanol concentrations and minimal acetic acid. Product recovery studies showed that ethanol is best recovered in a multi-step process involving solvent extraction/distillation to azeotrope/azeotropic distillation or pervaporation, or direct distillation to the azeotrope/azeotropic distillation or pervaporation. Projections show that the ethanol facility for a typical refinery would require an investment of about $30 million, which would be returned in less than 2 years.

  2. Bubble size measurement in three-phase system using photograph technology

    Institute of Scientific and Technical Information of China (English)

    SUN Wei; HU Yue-hua; LIU Run-qing

    2005-01-01

    A special experiment setup was designed to observe the interaction between bubbles and particle in flotation cell and to analyze the bubble characteristics such as bubble size, distribution and bubble-loading efficiency. Bubbles in water-gas system and three-phase system were measured. The results indicate that with the current setup the bubbles as small as 10 μm can be easily distinguished. The average size of the bubbles generated under the given conditions in two-phase system is 410 μm at frother concentration of 0.004%, which is in good correspondence with the results of other works. The effect of frother on bubble size was probed. Increasing frother concentration from 0 to 0.004% causes a reduction of bubble size from 700 to 400 μm. The bubble loading efficiency was reported. The result indicates that the fine particle is more easily entrapped than the coarse particle. Some factors, which have effect on measurement accuracy were discussed. The aeration speed has a significant effect on the accuracy of results, if it surpasses 30 mL/s, and the image becomes unclear due to the entrapment of fine particle. Another factor, which can affect observing results, is the sampling position. At a wrong sampling position, the images become unclear.

  3. Novel railway-subgrade vibration monitoring technology using phase-sensitive OTDR

    Science.gov (United States)

    Wang, Zhaoyong; Lu, Bin; Zheng, Hanrong; Ye, Qing; Pan, Zhengqing; Cai, Haiwen; Qu, Ronghui; Fang, Zujie; Zhao, Howell

    2017-04-01

    High-speed railway is being developed rapidly; its safety, including infrastructure and train operation, is vital. This paper presents a railway-subgrade vibration monitoring scheme based on phase-sensitive OTDR for railway safety. The subgrade vibration is detected and rebuilt. Multi-dimension comprehensive analysis (MDCA) is proposed to identify the running train signals and illegal constructions along railway. To our best knowledge, it is the first time that a railway-subgrade vibration monitoring scheme is proposed. This scheme is proved effective by field tests for real-time train tracking and activities monitoring along railway. It provides a new passive distributed way for all-weather railway-subgrade vibration monitoring.

  4. A 2x2 W-Band Reference Time-Shifted Phase-Locked Transmitter Array in 65nm CMOS Technology

    Science.gov (United States)

    Tang, Adrian; Virbila, Gabriel; Hsiao, Frank; Wu, Hao; Murphy, David; Mehdi, Imran; Siegel, P. H.; Chang, M-C. Frank

    2013-01-01

    This paper presents a complete 2x2 phased array transmitter system operating at W-band (90-95 GHz) which employs a PLL reference time-shifting approach instead of using traditional mm-wave phase shifters. PLL reference shifting enables a phased array to be distributed over multiple chips without the need for coherent mm-wave signal distribution between chips. The proposed phased array transmitter system consumes 248 mW per array element when implemented in a 65 nm CMOS technology.

  5. Technology.

    Science.gov (United States)

    Online-Offline, 1998

    1998-01-01

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

  6. Advanced powder metallurgy aluminum alloys via rapid solidification technology, phase 2

    Science.gov (United States)

    Ray, Ranjan; Jha, Sunil C.

    1987-01-01

    Marko's rapid solidification technology was applied to processing high strength aluminum alloys. Four classes of alloys, namely, Al-Li based (class 1), 2124 type (class 2), high temperature Al-Fe-Mo (class 3), and PM X7091 type (class 4) alloy, were produced as melt-spun ribbons. The ribbons were pulverized, cold compacted, hot-degassed, and consolidated through single or double stage extrusion. The mechanical properties of all four classes of alloys were measured at room and elevated temperatures and their microstructures were investigated optically and through electron microscopy. The microstructure of class 1 Al-Li-Mg alloy was predominantly unrecrystallized due to Zr addition. Yield strengths to the order of 50 Ksi were obtained, but tensile elongation in most cases remained below 2 percent. The class 2 alloys were modified composition of 2124 aluminum alloy, through addition of 0.6 weight percent Zr and 1 weight percent Ni. Nickel addition gave rise to a fine dispersion of intermetallic particles resisting coarsening during elevated temperature exposure. The class 2 alloy showed good combination of tensile strength and ductility and retained high strength after 1000 hour exposure at 177 C. The class 3 Al-Fe-Mo alloy showed high strength and good ductility both at room and high temperatures. The yield and tensile strength of class 4 alloy exceeded those of the commercial 7075 aluminum alloy.

  7. Medium Format Camera Evaluation Based on the Latest Phase One Technology

    Science.gov (United States)

    Tölg, T.; Kemper, G.; Kalinski, D.

    2016-06-01

    In early 2016, Phase One Industrial launched a new high resolution camera with a 100 MP CMOS sensor. CCD sensors excel at ISOs up to 200, but in lower light conditions, exposure time must be increased and Forward Motion Compensation (FMC) has to be employed to avoid smearing the images. The CMOS sensor has an ISO range of up to 6400, which enables short exposures instead of using FMC. This paper aims to evaluate the strengths of each of the sensor types based on real missions over a test field in Speyer, Germany, used for airborne camera calibration. The test field area has about 30 Ground Control Points (GCPs), which enable a perfect scenario for a proper geometric evaluation of the cameras. The test field includes both a Siemen star and scale bars to show any blurring caused by forward motion. The result of the comparison showed that both cameras offer high accuracy photogrammetric results with post processing, including triangulation, calibration, orthophoto and DEM generation. The forward motion effect can be compensated by a fast shutter speed and a higher ISO range of the CMOS-based camera. The results showed no significant differences between cameras.

  8. Effect of casting technology on microstructure and phases of high carbon high speed steel

    Directory of Open Access Journals (Sweden)

    Zhang Tianming

    2011-05-01

    Full Text Available The as-cast microstructures of high carbon high speed steels (HC-HSS made by sand casting, centrifugal casting and electromagnetic centrifugal casting, respectively, were studied by using of optical microscopy (OM and D/max2200pc X-ray diffraction. The results show that the microstructure of as-cast HC-HSS is dominated by alloy carbides (W2C, VC, Cr7C3, martensite and austenite. The centrifugal casting and electromagnetic centrifugal casting apparently improve the solidification structure of HC-HSS. With the increase of magnetic intensity (B, the volume fraction of austenite in the HC-HSS solidification structure increases significantly while the eutectic ledeburite decreases. Moreover, the secondary carbides precipitated from the austenite are finer with more homogeneous distribution in the electromagnetic centrifugal castings. It has also been found that the lath of eutectic carbide in ledeburite becomes finer and carbide phase spacing in eutectic ledeburite increases along with the higher magnetic field strength.

  9. MEDIUM FORMAT CAMERA EVALUATION BASED ON THE LATEST PHASE ONE TECHNOLOGY

    Directory of Open Access Journals (Sweden)

    T. Tölg

    2016-06-01

    Full Text Available In early 2016, Phase One Industrial launched a new high resolution camera with a 100 MP CMOS sensor. CCD sensors excel at ISOs up to 200, but in lower light conditions, exposure time must be increased and Forward Motion Compensation (FMC has to be employed to avoid smearing the images. The CMOS sensor has an ISO range of up to 6400, which enables short exposures instead of using FMC. This paper aims to evaluate the strengths of each of the sensor types based on real missions over a test field in Speyer, Germany, used for airborne camera calibration. The test field area has about 30 Ground Control Points (GCPs, which enable a perfect scenario for a proper geometric evaluation of the cameras. The test field includes both a Siemen star and scale bars to show any blurring caused by forward motion. The result of the comparison showed that both cameras offer high accuracy photogrammetric results with post processing, including triangulation, calibration, orthophoto and DEM generation. The forward motion effect can be compensated by a fast shutter speed and a higher ISO range of the CMOS-based camera. The results showed no significant differences between cameras.

  10. A Magnetocaloric Pump for Lab-On-Chip Technology: Phase I Report

    Energy Technology Data Exchange (ETDEWEB)

    Love, L.J.

    2004-04-05

    A magnetocaloric pump provides a simple means of pumping fluid using only external thermal and magnetic fields. The principle, which can be traced back to the early work of Rosensweig, is straightforward. Magnetic materials tend to lose their magnetization as the temperature approaches the material's Curie point. Exposing a column of magnetic fluid to a uniform magnetic field coincident with a temperature gradient produces a pressure gradient in the magnetic fluid. As the fluid heats up, it loses its attraction to the magnetic field and is displaced by cooler fluid. The impact of such a phenomenon is obvious: fluid propulsion with no moving mechanical parts. Until recently, limitations in the magnetic and thermal properties of conventional materials severely limited practical operating pressure gradients. However, recent advancements in the design of metal substituted magnetite enable fine control over both the magnetic and thermal properties of magnetic nanoparticles, a key element in colloidal based magnetic fluids (ferrofluids). This manuscript begins with a basic description of the process and previous limitations due to material properties. This is followed by a review of existing methods of synthesizing magnetic nanoparticles as well as an introduction to a new approach based on thermophilic metal-reducing bacteria. We compare two compounds and show, experimentally, significant variation in specific magnetic and thermal properties. We develop the constitutive thermal, magnetic, and fluid dynamic equations associated with magnetocaloric pump and validate our finite element model with a series of experiments. Preliminary results show a good match between the model and experiment as well as approximately an order of magnitude increase in the fluid flow rate over conventional magnetite based ferrofluids operating below 80 C. Finally, as a practical demonstration, we describe a novel application of this technology: pumping fluids at the &apos

  11. A Magnetocaloric Pump for Lab-On-A-Chip Technology: Phase I Report

    Energy Technology Data Exchange (ETDEWEB)

    Love, LJL

    2004-05-08

    A magnetocaloric pump provides a simple means of pumping fluid using only external thermal and magnetic fields. The principle, which can be traced back to the early work of Rosensweig, is straightforward. Magnetic materials tend to lose their magnetization as the temperature approaches the material's Curie point. Exposing a column of magnetic fluid to a uniform magnetic field coincident with a temperature gradient produces a pressure gradient in the magnetic fluid. As the fluid heats up, it loses its attraction to the magnetic field and is displaced by cooler fluid. The impact of such a phenomenon is obvious: fluid propulsion with no moving mechanical parts. Until recently, limitations in the magnetic and thermal properties of conventional materials severely limited practical operating pressure gradients. However, recent advancements in the design of metal substituted magnetite enable fine control over both the magnetic and thermal properties of magnetic nanoparticles, a key element in colloidal based magnetic fluids (ferrofluids). This manuscript begins with a basic description of the process and previous limitations due to material properties. This is followed by a review of existing methods of synthesizing magnetic nanoparticles as well as an introduction to a new approach based on thermophilic metal-reducing bacteria. We compare two compounds and show, experimentally, significant variation in specific magnetic and thermal properties. We develop the constitutive thermal, magnetic, and fluid dynamic equations associated with magnetocaloric pump and validate our finite element model with a series of experiments. Preliminary results show a good match between the model and experiment as well as approximately an order of magnitude increase in the fluid flow rate over conventional magnetite based ferrofluids operating below 80 C. Finally, as a practical demonstration, we describe a novel application of this technology: pumping fluids at the &apos

  12. Voidage Measurement of Air-Water Two-phase Flow Based on ERT Sensor and Data Mining Technology

    Institute of Scientific and Technical Information of China (English)

    王保良; 孟振振; 黄志尧; 冀海峰; 李海青

    2012-01-01

    Based on an electrical resistance tomography(ERT) sensor and the data mining technology,a new voidage measurement method is proposed for air-water two-phase flow.The data mining technology used in this work is a least squares support vector machine(LS-SVM) algorithm together with the feature extraction method,and three feature extraction methods are tested:principal component analysis(PCA),partial least squares(PLS) and independent component analysis(ICA).In the practical voidage measurement process,the flow pattern is firstly identified directly from the conductance values obtained by the ERT sensor.Then,the appropriate voidage measurement model is selected according to the flow pattern identification result.Finally,the voidage is calculated.Experimental results show that the proposed method can measure the voidage effectively,and the measurement accuracy and speed are satisfactory.Compared with the conventional voidage measurement methods based on ERT,the proposed method doesn't need any image reconstruction process,so it has the advantage of good real-time performance.Due to the introduction of flow pattern identification,the influence of flow pattern on the voidage measurement is overcome.Besides,it is demonstrated that the LS-SVM method with PLS feature extraction presents the best measurement performance among the tested methods.

  13. EVALUATION OF THOR MINERALIZED WASTE FORMS FOR THE DOE ADVANCED REMEDIATION TECHNOLOGIES PHASE 2 PROJECT

    Energy Technology Data Exchange (ETDEWEB)

    Crawford, C.; Jantzen, C.

    2012-02-02

    , sulfates/sulfides, chlorides, fluorides, volatile radionuclides or other aqueous components. The FBSR technology can process these wastes into a crystalline ceramic (mineral) waste form. The mineral waste form that is produced by co-processing waste with kaolin clay in an FBSR process has been shown to be as durable as LAW glass. Monolithing of the granular FBSR product, which is one of the objectives of this current study, is being investigated to prevent dispersion during transport or burial/storage but is not necessary for performance. FBSR testing of a Hanford LAW simulant and a WTP-SW simulant at the pilot scale was performed by THOR Treatment Technologies, LLC at Hazen Research Inc. in April/May 2008. The Hanford LAW simulant was the Rassat 68 tank blend and the target concentrations for the LAW was increased by a factor of 10 for Sb, As, Ag, Cd, and Tl; 100 for Ba and Re (Tc surrogate); 1,000 for I; and 254,902 for Cs based on discussions with the DOE field office and the environmental regulators and an evaluation of the Hanford Tank Waste Envelopes A, B, and C. It was determined through the evaluation of the actual tank waste metals concentrations that some metal levels were not sufficient to achieve reliable detection in the off-gas sampling. Therefore, the identified metals concentrations were increased in the Rassat simulant processed by TTT at HRI to ensure detection and enable calculation of system removal efficiencies, product retention efficiencies, and mass balance closure without regard to potential results of those determinations or impacts on product durability response such as Toxicity Characteristic Leach Procedure (TCLP). A WTP-SW simulant based on melter off-gas analyses from Vitreous State Laboratory (VSL) was also tested at HRI in the 15-inch diameter Engineering Scale Test Demonstration (ESTD) dual reformer at HRI in 2008. The target concentrations for the Resource Conservation and Recovery Act (RCRA) metals were increased by 16X for Se, 29X for

  14. EVALUATION OF THOR MINERALIZED WASTE FORMS FOR THE DOE ADVANCED REMEDIATION TECHNOLOGIES PHASE 2 PROJECT

    Energy Technology Data Exchange (ETDEWEB)

    Crawford, C.; Jantzen, C.

    2012-02-02

    , sulfates/sulfides, chlorides, fluorides, volatile radionuclides or other aqueous components. The FBSR technology can process these wastes into a crystalline ceramic (mineral) waste form. The mineral waste form that is produced by co-processing waste with kaolin clay in an FBSR process has been shown to be as durable as LAW glass. Monolithing of the granular FBSR product, which is one of the objectives of this current study, is being investigated to prevent dispersion during transport or burial/storage but is not necessary for performance. FBSR testing of a Hanford LAW simulant and a WTP-SW simulant at the pilot scale was performed by THOR Treatment Technologies, LLC at Hazen Research Inc. in April/May 2008. The Hanford LAW simulant was the Rassat 68 tank blend and the target concentrations for the LAW was increased by a factor of 10 for Sb, As, Ag, Cd, and Tl; 100 for Ba and Re (Tc surrogate); 1,000 for I; and 254,902 for Cs based on discussions with the DOE field office and the environmental regulators and an evaluation of the Hanford Tank Waste Envelopes A, B, and C. It was determined through the evaluation of the actual tank waste metals concentrations that some metal levels were not sufficient to achieve reliable detection in the off-gas sampling. Therefore, the identified metals concentrations were increased in the Rassat simulant processed by TTT at HRI to ensure detection and enable calculation of system removal efficiencies, product retention efficiencies, and mass balance closure without regard to potential results of those determinations or impacts on product durability response such as Toxicity Characteristic Leach Procedure (TCLP). A WTP-SW simulant based on melter off-gas analyses from Vitreous State Laboratory (VSL) was also tested at HRI in the 15-inch diameter Engineering Scale Test Demonstration (ESTD) dual reformer at HRI in 2008. The target concentrations for the Resource Conservation and Recovery Act (RCRA) metals were increased by 16X for Se, 29X for

  15. Development of Hydrologic Characterization Technology of Fault Zones -- Phase I, 2nd Report

    Energy Technology Data Exchange (ETDEWEB)

    Karasaki, Kenzi; Onishi, Tiemi; Black, Bill; Biraud, Sebastien

    2009-03-31

    This is the year-end report of the 2nd year of the NUMO-LBNL collaborative project: Development of Hydrologic Characterization Technology of Fault Zones under NUMO-DOE/LBNL collaboration agreement, the task description of which can be found in the Appendix 3. Literature survey of published information on the relationship between geologic and hydrologic characteristics of faults was conducted. The survey concluded that it may be possible to classify faults by indicators based on various geometric and geologic attributes that may indirectly relate to the hydrologic property of faults. Analysis of existing information on the Wildcat Fault and its surrounding geology was performed. The Wildcat Fault is thought to be a strike-slip fault with a thrust component that runs along the eastern boundary of the Lawrence Berkeley National Laboratory. It is believed to be part of the Hayward Fault system but is considered inactive. Three trenches were excavated at carefully selected locations mainly based on the information from the past investigative work inside the LBNL property. At least one fault was encountered in all three trenches. Detailed trench mapping was conducted by CRIEPI (Central Research Institute for Electric Power Industries) and LBNL scientists. Some intriguing and puzzling discoveries were made that may contradict with the published work in the past. Predictions are made regarding the hydrologic property of the Wildcat Fault based on the analysis of fault structure. Preliminary conceptual models of the Wildcat Fault were proposed. The Wildcat Fault appears to have multiple splays and some low angled faults may be part of the flower structure. In parallel, surface geophysical investigations were conducted using electrical resistivity survey and seismic reflection profiling along three lines on the north and south of the LBNL site. Because of the steep terrain, it was difficult to find optimum locations for survey lines as it is desirable for them to be as

  16. Manufacturing Technology Support (MATES II) Task Order 0005: Manufacturing Integration and Technology Evaluation to Enable Technology Transition. Subtask Phase 0 Study Task: Manufacturing Technology (ManTech) and Systems Engineering For Quick Reaction Systems

    Science.gov (United States)

    2014-10-01

    guidance on current MRL and MRA processes. In addition, Gene Wiggs of GE and Paul Hauwiller of General Dynamics Information Technology (GDIT...or Deployment) Team IPQA™ In-process quality assurance (trademark of Beyond Six Sigma) JDMTP Joint Defense Manufacturing Technology Panel KPC Key

  17. Perspective of mathematical modeling and research of targeted formation of disperse phase clusters in working media for the next-generation power engineering technologies

    Science.gov (United States)

    Simos, Theodore E.; Kovalnogov, Vladislav N.; Shevchuk, Igor V.

    2017-07-01

    The perspective of mathematical modeling and research of formation of disperse phase clusters of working media for next-generation technologies of production and transformation of energy on organic and synthetic hydrocarbon fuel is presented. Approach to creation of a problem-oriented complex of the theory, the models, knowledge bases as well as software-and-informational tools providing in total an opportunity for high-precision simulation, working off and prototyping in a computing experiment of the perspective technologies based on optimization and targeted formation of disperse phase clusters of a working media is considered.

  18. A fluid biopsy as investigating technology for the fluid phase of solid tumors

    Science.gov (United States)

    Kuhn, Peter; Bethel, Kelly

    2012-02-01

    Reliable measurement of internal bodily substances and structures is one of the cornerstones of modern medicine. Progress in cancer medicine, like that in many medical fields, must encompass and take advantage of progress in the physical sciences. Historically, the development and refinement of physical sciences-based detection of biological entities precedes periods of great advancements in therapies. To treat broken limbs and arthritis, we are indebted to Conrad Roentgen's discovery of x-rays by which we can evaluate the bones; to apply gamma knife therapy for cancer, we are indebted to Marie Curie's discoveries about radioactivity by which we can eradicate tumors; to manage the complications of diabetes, we are indebted to Tom Clemens, Ames Pharmaceuticals and Dick Bernstein's refinement of direct blood glucose measurement technology by which we can count, hour-to-hour, the waxing and waning of blood sugar levels; to understand anything at all on the cellular level, we are indebted to Antonie van Leeuwenhoek's microscope, by which we can see our cells. The application of physical sciences perspectives to biological and medical problems has a long and productive history. As of late, however, the increasing compartmentalization of science and exponential increases of knowledge in both arenas has resulted in a rift between the two. The NCI has initiated a research network establishing multiple centers of investigation, the Physical Sciences in Oncology Centers (http://physics.cancer.gov), which seek to mend the rift. Each headed by a pair of investigators, one in the physical sciences and one in the biological sciences, the centers seek to bring the advances and breakthroughs of the physical sciences world to bear on the question of cancer. This issue of physical biology contains a series of articles exploring the utility and applicability of a new method for measuring cancer as it spreads, developed at the Scripps Physical Oncology Center. Although some progress

  19. Results from the electro-optic sensors domain of the materials and components for missiles innovation and technology partnership (phase 1)

    Science.gov (United States)

    Bray, Mark E.; Shears, Robert A.

    2013-10-01

    The Materials and Components for Missiles Innovation and Technology Partnership (ITP) is a research programme supporting research for guided weapons at Technology Readiness Levels 1 to 4. The Anglo-French initiative is supported by the DGA and the MoD, with matched funding from industry. A major objective is to foster projects which partner UK and French universities, SMEs and larger companies. The first projects started in January 2008 and the first phase completed in spring 2013. Providing funding is secured, the next phase of the programme is due to start later in 2013. Selex ES leads Domain 3 of the MCM-ITP which develops Electro-Optic sensor technology. In collaboration with DGA, MoD and MBDA, the prime contractor, we identified 4 key objectives for the first ITP phase and focussed resources on achieving these. The objectives were to enable better imagery, address operationally stressing scenarios, provide low overall through life cost and improve active and semi-active sensors Nine normal projects and one ITP innovation fund project have been supported within the domain. The technology providers have included 3 SMEs and 8 research centres from both the United Kingdom and France. Highlights of the projects are included. An outline of the priorities for the domain for the new phase ise provided and we encourage organisations with suitable technology to contact us to get involved.

  20. Technology

    Directory of Open Access Journals (Sweden)

    Xu Jing

    2016-01-01

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

  1. Perpentylated (2, 3, 6-Tri-O-pentyl)-β-cyclodextrin Used as Capillary Gas Chromatographic Stationary Phase Prepared by Sol-gel Technology

    Institute of Scientific and Technical Information of China (English)

    Min Min LIANG; Mei Ling QI; Yu LENG; Ruo Nong FU

    2005-01-01

    Capillary column preparation using perpentylated (2,3,6-tri-O-pentyl)-β-cyclodextrin as stationary phase by sol-gel technology with simplicity and rapidity is described. Multiple preparation steps in conventional column technology were avoided. The prepared columns exhibit satisfactory chromatographic performances and pronounced selectivity for a wide range of test solutes, and have been successfully used for the separation of nitrotoluene, dimethoxybenzene,alcohols, alkanes, dimethylphenol and cresol isomers.

  2. The Transplant of Technology of Capacitive Displacement Transducer to Phase Modulation Grating-the Research of the Grating with nm Measuring Resolution

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    The method rising measuring resolution through reducing pitch of the transducer has brought forward from the basic structure, principle and the corresponding relationship among pitches of capacitive electrodes, period T and phase shift of vv(x,t). But if the traditional technique of PCB made of the transducer is still used, it will meet with difficulties in lead wire. And so the technology transplant from the transducer to grating is presented, the basic principle of the phase modulation grating similar...

  3. 相变储能纤维制备技术的研究进展%Research progress in production technology for phase change energy storage fiber

    Institute of Scientific and Technical Information of China (English)

    张鸿; 王倩倩; 相恒学

    2011-01-01

    概述了相变储能纤维对相变材料的要求及其调温机理;详述了相变储能纤维的制备技术,主要包括复合纺丝法、中空填充法及织物涂层法等;分析了我国开发相变储能纤维的技术瓶颈;展望了相变储能纤维应用前景;指出今后应重点开发以聚合物基体为骨架的新型相变材料,提高相变材料密度,完善纺丝工艺,实现相变储能纤维的产业化.%The raw material requirement and temperatureadapting mechanism of phase change energy storage fiber were described. The production technology for phase change energy storage fiber was introduced in details, dominantly including composite spinning process, hollow filling method, fabric coating method. The technological bottleneck of phase change energy storage fiber development was analyzed in China. The application prospects of phase change energy storage fiber were outlooked. The research should focus on the development of novel phase change materials using polymer matrix as framework, the improvement of phase change material density and spinning process and the industrialization of phase change energy storage fiber in the future.

  4. 超声波相控阵黄金纯度检测技术%Gold Purity Inspection Technology by Ultrasonic Phased Array

    Institute of Scientific and Technical Information of China (English)

    钟德煌; 徐贝尔; 梁茂飞

    2013-01-01

    The basic gold purity inspection method is introduced simply and the new gold inspection technology by ultrasonic phased array is focused in this paper. The principle of using phased array technology to inspect gold bar is analyzed. The ultrasonic phased array technology is reliable in gold inspection application which is verified by experiment. The result is that ultrasonic phased array technology could find the gas pore, inclusion defect and distinguish the 24K from 18K gold.%简要介绍了黄金纯度检测的基本方法,重点介绍了黄金纯度检测新技术—超声波相控阵检测技术的基本原理与方法.通过试验验证了超声波相控阵技术检测黄金纯度的可行性,可以检测出黄金纯度内部的气孔,块状夹杂及已熔化的夹杂,可以区分出24K与18K黄金.

  5. 相控阵超声检测技术应用%The Principle and Its Application of Phased Array Ultrasonic Inspection Technology

    Institute of Scientific and Technical Information of China (English)

    田安定

    2011-01-01

    Phased Array ultrasonic technology was applied widely in NDT. This technology was based on electronic delay control, and on the superposition and interference principle of ultrasonic wave, forming dynamic scanning beam, eventually forming a scanning image. It was better than conventional method on probability of detection. This paper focused on principles of phased array technology, equipment usage and calibration, introducing several classic applications of some fields using phased array technology.%相控阵超声技术在无损检测行业中已经得到广泛的应用,该技术根据电子延时控制,利用波的叠加和干涉原理,形成动态扫查声束,最终合成扫查图像,比传统超声波探伤具有时更高的缺陷检出率.围绕相控阵技术原理、设备的使用和校准,介绍了相控阵技术在一些领域的经典应用.

  6. Innovative fossil fuel fired vitrification technology for soil remediation. Volume 1, Phase 1: Annual report, September 28, 1992--August 31, 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-08-01

    Vortex has successfully completed Phase 1 of the ``Innovative Fossil Fuel Fired Vitrification Technology for Soil Remediation`` program with the Department of Energy (DOE) Morgantown Energy Technology Center (METC). The Combustion and Melting System (CMS) has processed 7000 pounds of material representative of contaminated soil that is found at DOE sites. The soil was spiked with Resource Conversation and Recovery Act (RCRA) metals surrogates, an organic contaminant, and a surrogate radionuclide. The samples taken during the tests confirmed that virtually all of the radionuclide was retained in the glass and that it did not leach to the environment. The organic contaminant, anthracene, was destroyed during the test with a Destruction and Removal Efficiency (DRE) of at least 99.99%. RCRA metal surrogates, that were in the vitrified product, were retained and will not leach to the environment--as confirmed by the TCLP testing. Semi-volatile RCRA metal surrogates were captured by the Air Pollution Control (APC) system, and data on the amount of metal oxide particulate and the chemical composition of the particulate were established for use in the Phase 2 APC system design. This topical report will present a summary of the activities conducted during Phase 1 of the ``Innovative Fossil Fuel Fired Vitrification Technology for Soil Remediation`` program. The report includes the detail technical data generated during the experimental program and the design and cost data for the preliminary Phase 2 plant.

  7. Research on the technologies of conformal phased array antenna%共形相控阵天线的技术研究

    Institute of Scientific and Technical Information of China (English)

    伏浩; 李小浩; 李会莲

    2014-01-01

    Phased array antenna technology has been applied widely and developed rapidly in the fields of radar, communication, electronic warfare and navigation. Conformal phased array antenna technology is the focus of development of the phased array antenna. The development of foreign countries about conformal phased array antenna is introduced, the antenna array and pattern integration and beam forming of conformal phased array antenna are briefly discussed in this paper.%相控阵天线技术在雷达、通信、电子战、导航等领域获得了广泛应用和高速发展,共形相控阵天线是相控阵天线发展的重点之一。文章介绍了共形相控阵天线国外发展现状,进而探讨了共形相控阵的天线阵型,方向图综合及波束形成技术体制等关键技术。

  8. Novel selective surface flow (SSF{trademark}) membranes for the recovery of hydrogen from waste gas streams. Phase 2: Technology development, final report

    Energy Technology Data Exchange (ETDEWEB)

    Anand, M.; Ludwig, K.A.

    1996-04-01

    The objective of Phase II of the Selective Surface Flow Membrane program was Technology Development. Issues addressed were: (i) to develop detailed performance characteristics on a 1 ft{sup 2} multi- tube module and develop design data, (ii) to build a field test rig and complete field evaluation with the 1 ft{sup 2} area membrane system, (iii) to implement membrane preparation technology and demonstrate membrane performance in 3.5 ft long tube, (iv) to complete detailed process design and economic analysis.

  9. The Influence of Technological Conditions of the Process of Cogging in Flat Dies on the Quality of Two-Phase Titanium Alloys

    Directory of Open Access Journals (Sweden)

    Dyja Н.

    2016-06-01

    Full Text Available To create a rational technology of cogging process and to determinate the optimal values of the angles of tilt and single reduction the stress-strain state (SSS of the blank during cogging in the flat dies was analyzed. By using the finite element method and program MSC.SuperForge quantitative data are obtained and the basic patterns of distribution of SSS, the temperature during the simulation of tilting in flat dies with different angles of tilting and the amount of reduction were established. Sustainable experimental-industrial technology of forging of two-phase titanium alloys was developed and tested.

  10. The Transplant of Technology of Capacitive Displacement Transducer to Phase Modulation Grating-the Research of the Grating with nm Measuring Resolution

    Institute of Scientific and Technical Information of China (English)

    Zhang Zengyao; Wang Wei; Jin Ning

    2003-01-01

    The method rising measuring resolution through reducing pitch of the transducer has brought forward from the basic structure, principle and the corresponding relationship among pitches of capacitive electrodes, period T and phase shift of o. But if the traditional technique of PCB made of the transducer is still used, it will meet with difficulties in lead wire. And so the technology transplant from the transducer to grating is presented, the basic principle of the phase modulation grating similar to the transducer is described and the experiments setup of transmitted and reflective grating are put out. Some practical schemes f the new grating with resolution to sub-micron, even nm is given.

  11. 相位控制在单相接地测试系统的应用%Application of Phase Control Technology in Single Phase to Earth Test System

    Institute of Scientific and Technical Information of China (English)

    田庆生; 梁仕斌; 程干江; 路世英; 杨天林

    2016-01-01

    Accurate control of the phase angle at the docking point is necessary in order to reproduce the transient process of single-phase grounding fault of distribution network. In this paper, the phase control technology is studied, and the method of real-time adjustment or stage adjustment is used to alleviate the problem of poor phase control technology. It is applied to the design of 10kV power distribution network fault indicator system, the power distribution automation equipment such as fault indicator can repeat batch tested in the same closing angle.%为了复现配电网单相接地故障时的暂态过程,需要对接地时刻相位角度准确控制。对相角控制技术进行了研究,用实时调整或阶段调整的方法缓解相位控制技术一致性差的问题,该技术应用于配电网故障指示器系统测试平台,实现了合闸相角精确控制,经试验验证满足在故障指示器等配电自动化相关设备重复性测试的要求。

  12. Simultaneous extraction of phase and phase shift from two interferograms using Lissajous figure and ellipse fitting technology with Hilbert-Huang prefiltering

    Science.gov (United States)

    Liu, Fengwei; Wang, Jing; Wu, Yongqian; Wu, Fan; Trusiak, Maciej; Patorski, Krzysztof; Wan, Yongjian; Chen, Qiang; Hou, Xi

    2016-10-01

    This paper presents a novel method to extract the phase shift and phase distribution from two interferograms simultaneously. By employing Hilbert-Huang transform based prefiltering, the background intensities and modulation amplitudes of the two interferograms are suppressed and normalized respectively. With the addition and subtraction operation of the two prefiltered interferograms, two parametric equations are achieved which can be regarded as the complex harmonic motion of the Lissajous figure. The phase of the Lissajous figure can be directly demodulated by the ellipse fitting algorithm. Apart from the advantages of other well-known two-step phase demodulation algorithms, i.e., high accuracy and efficiency of the Gram-Schmidt orthonormalization (GS) method and the less stringent requirement concerning the fringe number in the extreme value of interference (EVI) method, proposed Lissajous figure and ellipse fitting (LEF) approach has another bonus related to its robustness to the fluctuations of the fringe patterns noise, background intensity and modulation amplitude. Simulations demonstrate the outstanding performance of the proposed method, and experiments further corroborate its effectiveness.

  13. The integration of Mathematics, Science and Technology in early childhood education and the foundation phase: The role of the formation of the professional identities of beginner teachers

    OpenAIRE

    2015-01-01

    This article focuses on the professional identity formation of six beginner teachers (three in early childhood education and three in the foundation phase), involved in the teaching of Mathematics, Science and Technology (MST). Attention is in particular being paid to the role of professional identity in how they applied innovative teaching methods such as enquiry-based teaching. The study is based on the personal narratives of the six teachers, regarding their own learning experiences in MST...

  14. Solid-phase Microextraction and Its Coupling with Other Analytical Technologies%固相微萃取及其与某些分析技术联用

    Institute of Scientific and Technical Information of China (English)

    邓华; 朱彭龄

    2001-01-01

    评述了固相微萃取技术的特点、理论、表面涂层材料和方法的建立,以及与一些分析技术的联用。%The characteristic,theory,fiber coatings,method development of solid-phase microextraction and its coupling with other analytical technologies were reviewed with 59 references.

  15. Thin-Film CIGS Photovoltaic Technology: Annual Technical Report-Phase II, 16 April 1999-15 April 2000

    Energy Technology Data Exchange (ETDEWEB)

    Delahoy, A.E.; Bruns, J.; Ruppert, A.; Akhtar, M.; Chen, L.; Kiss, Z.J.

    2000-08-24

    A summary of Energy Photovoltaics' Phase II work includes the following: (1) EPV has demonstrated that it can sputter a Mo back-contact capable of supporting very high efficiency cell processing. Using EPV Mo, NREL has deposited a 17.1% CIGS cell (no AR coating). EPV believes it can identify the signature of ``good'' Mo. The Mo was produced on EPV's 0.43 m{sup 2} pilot-line equipment; (2) EPV has performed compound synthesis for several classes of materials, namely non-Cu precursor materials, Cu-containing materials, and ternary buffer materials. Using a ternary compound synthesized at EPV (ZIS) as an evaporation source material for the buffer layer, a Cd-free CIGS device has been produced having an efficiency of 11.5% (560 mV, 32.1 mA/cm{sup 2}, FF 64.3%). The ZIS films are photoconductive, and the devices exhibit no dark-light crossover or light soaking effects; (3) EPV initiated the interest of the University of Oregon in capacitance spectroscopy of CIGS devices. An Urbach tail with characteristic energy E0 < 20meV was identified by transient photocapacitance spectroscopy; (4) Small-area CIGS devices were produced in the pilot-line system with an efficiency of 12.0% (581 mV, 30.1 mA/cm{sup 2}, FF 68.7%), and in an R and D-scale system with 13.3% efficiency (569 mV, 34.1 mA/cm{sup 2}, FF 68.1%); (5) An improved linear evaporation source for Cu delivery has been developed and was used for CIGS formation in the pilot-line system. The deposition width is 45 cm. This technological ``tour de force'' allows EPV to build large-area CIGS systems possessing considerable flexibility. In particular, both EPV's FORNAX process and NREL's 3-stage process have been implemented on the pilot line. A CIGS thickness uniformity of 7% over a 40 cm width has been achieved; (6) A 4-head linear source assembly was designed, constructed, and is in use. Flux monitoring is practiced; (7) Large-area CIGS modules were produced with Voc's up to 36

  16. Bivariate phase-rectified signal averaging for assessment of spontaneous baroreflex sensitivity: pilot study of the technology.

    Science.gov (United States)

    Bauer, Axel; Morley-Davies, Adrian; Barthel, Petra; Müller, Alexander; Ulm, Kurt; Malik, Marek; Schmidt, Georg

    2010-01-01

    Assessment of spontaneous baroreflex sensitivity (BRS), an index of autonomic function, poses practical challenges. In this pilot study, we propose a novel technique for assessment of spontaneous BRS based on bivariate phase-rectified signal averaging (PRSA). This is an extension of the monovariate PRSA technology used for calculation of deceleration capacity. A prospective, observational study was conducted in a training cohort of 146 patients with heart failure (New York Heart Association class 2.7 ± 0.8, left ventricular ejection fraction 23.6% ± 9.0%) presenting with sinus rhythm. In all patients, 10-minute recordings of ECG and arterial and blood pressure were obtained in the supine resting position. The algorithm for BRS assessment based on bivariate PRSA (BRS(PRSA)) included (1) identification of heartbeat intervals occurring at the time of systolic pressure increases, (2) selection of heartbeat adjacent interval sections, (3) alignment and (4) averaging of these segments, and (5) quantification of the average heart beat interval change by Haar wavelet analysis. Primary end point was death of any cause. During mean follow-up of 2.7 ± 1.1 years, 42 patients (28.8%) died. BRS(PRSA) was significantly associated with the primary end point (3.7 ± 5.3 ms vs -0.33 ± 6.6 ms in survivors and nonsurvivors, respectively). BRS(PRSA) yielded an area under the receiver operating characteristics curve of 69.8% (95% confidence interval, 59.9-79.7), which was comparable to the area under the curve of left ventricular ejection fraction (70.4%; 95% confidence interval, 61.3-79.5). Using the optimum dichotomy for BRS(PRSA) of 1.14 milliseconds, 52 (36%) patients had an abnormal BRS(PRSA). The 3-year mortality risk of these patients was 45.3% compared to 19.0% in patients with normal BRS(PRSA). On multivariate analysis, abnormal BRS(PRSA) was an independent risk factor from left ventricular ejection fraction ≤ 30% and New York Heart Association class > II. BRS(PRSA) is an

  17. 超声相控阵技术的仿真试验%The Simulation Experiment of the Phased Array Ultrasonic Technology

    Institute of Scientific and Technical Information of China (English)

    王海涛; 史振; 程继隆; 蒋俊; 梁斌

    2011-01-01

    超声相控阵技术是一种先进的超声无损检测技术.超声相控阵技术通过对超声阵列换能器中各阵元进行精确延时控制,获得灵活可控的合成波束,并可随意控制聚焦点的位置.利用仿真相控阵合成聚焦技术的方法,搭建了一个16阵元、超声信号发射、接收和处理试验系统.利用该系统对缺陷试块进行了检测试验,试验结果与实际试块缺陷情况吻合.通过对试块缺陷的检测试验,对比聚焦与不聚焦的检测效果,证明了相控阵合成聚焦技术可以极大地提高检测的信噪比和灵敏度,验证了相控阵聚焦可以提高检测能力.%Ultrasonic phased array testing technology is an advanced ultrasonic nondestructive testing technology. Ultrasonic phased array technology can achieve flexible, controllable synthesized ultrasound beam and freely control t he focus point position by exciting each element of ultrasonic array transducer with independent phase delay. Based on the synthesis of phased array focusing approach experiment, a 16-element array signal acquisition and processing of experiment system was designed. Test experiments to the piece were carried out with this system. The experiment result fit with the actual defects. Result showed that this method could achieve the effect of phased array focusing, which greatly improved the detection signal noise ratio and sensitivity, also verified the ultrasonic phased array testing method was feasible. Through the experimental test of defect detection, especially with the contrast focusing and non-focusing detection experiment, the results showed that phased array technology could improve the defect detection capability.

  18. Technology Status and Developing Trends of Satellite Phased Array%星载相控阵天线的技术现状及发展趋势

    Institute of Scientific and Technical Information of China (English)

    阎鲁滨

    2012-01-01

    星载相控阵天线采用现代微波集成技术,在有限的卫星平台空间条件下,实现独立控制的多个点波束,满足未来通信的需求。相控阵天线可以实现波束间通信容量的调整,还可以根据需要改变波束形状,使用自适应调零的抗干扰技术,这些技术已在国外星上设备中广泛采用,具有广阔的发展前景。文章介绍了星载相控阵天线的研究现状、关键技术,以及发展趋势,并对我国星载相控阵天线技术的发展提出了建议。%Satellite phased array with modern microwave integrated circuit technology takes limit space on satellite and is able to independently control many beams to satisfy the demands ofmod- ern communication. The power ration between beams of phased array is adjustble. The radiation beam shape is variable and adaptive anti-jamming technology is easy to apply. Satellite phased ar- ray has been applied in wide domain and has increasing developing future. This paper gives the research status of satellite phased array, the key technologies and prospects the developing trends of satellite phased array.

  19. Supercritical fluid chromatography and steady-state recycling: phase appropriate technologies for the resolutions of pharmaceutical intermediates in the early drug development stage.

    Science.gov (United States)

    Yan, Tony Q; Orihuela, Carlos; Preston, Jay P; Xia, Fang

    2010-11-01

    The use of phase appropriate technologies is critical for efficiently moving drug candidates forward in the early stages of drug discovery and development. Phase appropriate purification technology develops the analytical method and subsequently scales up the method and turns the sample around quickly (Kennedy et al., J Chromatogr A 2004; 1046:55). In this article, separation results and conditions from supercritical fluid chromatography (SFC), high-performance liquid chromatography (HPLC), and steady-state recycling (SSR) for the resolutions of three pharmaceutical intermediates in the early stage of the drug development are discussed. The first study used SFC and SSR to separate an impurity for a Good Manufacturing Practice (GMP) campaign. The analytical method development and scale-up conditions are discussed. Productivity, solvent usage, and sample solubility under SFC and SSR conditions are also compared. The second study compared SFC to batch HPLC in separating a diastereomer. Due to higher separation efficiency, SFC was able to resolute multiple peaks. The third study involved the addition of dichloromethane as a co-solvent in SFC purification--improving sample selectivity and solubility. From the separation results of these purifications, SFC and SSR are clearly phase appropriate technologies in the early drug development stage.

  20. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT-A AND A ENVIRONMENTAL SEALS, INC., SEAL ASSIST SYSTEM (SAS) PHASE II REPORT

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of Seal Assist System (SAS) for natural gas reciprocating compressor rod packing manufactured by A&A Environmental Seals, Inc. The SAS uses a secondary containment gland to collect natural g...

  1. Distribution of Polycyclic Aromatic Hydrocarbons between the Particulate and the Gas Phase of Mainstream Cigarette Smoke in Relation to Cigarette Technological Characteristics

    Directory of Open Access Journals (Sweden)

    Kalaitzoglou M

    2014-12-01

    Full Text Available Particulate- and gas-phase polycyclic aromatic hydrocarbons (PAHs were determined in the mainstream smoke (MSS of 59 manufactured cigarette brands (commercially available brands of unknown tobacco and blend type with variable ‘tar’ yields and physical/technological characteristics. Depending on the existence/absence of filter, the ‘tar’ yield indicated on the packet, and the cigarette length and diameter, the examined cigarette brands were classified into 15 groups: non filter (NF, high (H, medium (M, light (L, super light (SL, ultra light (UL, one-tar yields (O, 100 mm long cigarettes (H-100, L-100, SL-100, UL-100, O-100, and slim cigarettes (SL-SLIM, UL-SLIM, O-SLIM. Cigarettes were smoked in a reference smoking machine equipped with glass fibre filters for collection of PAHs bound to total particulate matter (TPM, and polyurethane foam plugs (PUF for collection of gas-phase PAHs. The relationships of gas- and particulate-phase concentrations of PAHs (ng/cig with the contents of typical MSS components, such as TPM, ‘tar’, nicotine and carbon monoxide were investigated. In addition, the phase partitioning of PAHs in MSS was evaluated in relation to the technological characteristics of cigarettes.

  2. Effectiveness of Online Workshops for Increasing Participants' Technology Knowledge, Attitude, and Skills: A Final Report of the Early Childhood Technology Integrated Instructional System-Phase 2

    Science.gov (United States)

    Hutinger, Patricia; Robinson, Linda; Schneider, Carol; Daytner, Gary; Bond, Janet

    2006-01-01

    The findings of EC-TIIS 2 provide evidence on the effectiveness of web-based training as a tool for educators and families in advancing educational opportunities for young children with disabilities. The resulting product and procedures will add valuable information to the field of early childhood technology as well as to the research on online…

  3. Improved fiber-optic link for the phase reference distribution system for the TESLA technology based projects

    Science.gov (United States)

    Czuba, Krzysztof; Felber, Matthias

    2005-09-01

    The UV Free-Electron Laser (UVFEL) [1], The X-Ray Free-Electron Laser (XFEL) [2] and The International Linear Accelerator (ILC) [9] projects will require phase synchronization of various RF frequency subsystems on kilometer distances with accuracy better than 1ps. To fulfill these requirements, a phase reference distribution system concept was proposed and a prototype was developed for tests in the TESLA Test Facility 2 (TTF2). An important part of the phase reference system is the fiber-optic phase stable, long distance link described in this paper. An interferometrical scheme with feedback on phase, suppressing long term phase drifts induced by temperature changes was developed and tested in laboratory and under accelerator conditions. A motorized optical delay line was used in the system to compensate for phase errors. Described are error considerations and most important project issues like the hardware development and the real time phase controller software. The presented measurement results satisfy the design requirements. Experience gained during the experiments yielded proposals for system improvements.

  4. Low Loss Electro-Optic Polymer Based Fast Adaptive Phase Shifters Realized in Silicon Nitride and Oxynitride Waveguide Technology

    Directory of Open Access Journals (Sweden)

    Lars Baudzus

    2016-08-01

    Full Text Available We present a comprehensive study on how to design and fabricate low loss electro-optic phase shifters based on an electro-optic polymer and the silicon nitride and silicon oxynitride waveguide material systems. The loss mechanisms of phase shifters with an electro-optic (EO polymer cladding are analyzed in detail and design solutions to achieve lowest losses are presented. In order to verify the low loss design a proof of concept prototype phase shifter was fabricated, which exhibits an attenuation of 0.8 dB/cm at 1550 nm and an electro-optic efficiency factor of 27%. Furthermore, the potential of this class of phase shifters is evaluated in numerical simulations, from which the optimal design parameters and achievable figures of merit were derived. The presented phase shifter design has its potential for application in fast adaptive multi stage devices for optical signal processing.

  5. Fundamental aspects of pulse phase-locked loop technology-based methods for measurement of ultrasonic velocity

    Science.gov (United States)

    Yost, William T.; Cantrell, John H.; Kushnick, Peter W.

    1992-03-01

    A new instrument based on a constant frequency pulse phase-locked loop concept has been developed to accurately measure the ultrasonic phase velocity in condensed matter. Measurements of the sound velocity in ultrapure water are reported in which both damped and undamped transducers are used with the instrument together with reflectors of various thicknesses placed in the sound propagation path. An analysis of measurements made with the new instrument and similar measurements, taken under identical experimental conditions, using a popular variable frequency pulsed-phase-locked loop instrument is reported. Uncertainties in both measurement systems are analyzed and discussed. A method for measuring inherent phase shifts, not addressed by previous investigations, within the variable frequency pulsed phase-locked loop system and a derivation of the equations that govern the overall use of variable frequency systems using phase-sensitive comparisons are presented. The effects of a finite pulse length on the measurements of phase velocity in dispersive media are addressed in detail.

  6. Fundamental aspects of pulse phase-locked loop technology-based methods for measurement of ultrasonic velocity

    Energy Technology Data Exchange (ETDEWEB)

    Yost, William T; Cantrell, John H; Kushnick, Peter W

    1992-03-01

    A new instrument based on a constant frequency pulse phase-locked loop concept has been developed to accurately measure the ultrasonic phase velocity in condensed matter. Measurements of the sound velocity in ultrapure water are reported in which both damped and undamped transducers are used with the instrument together with reflectors of various thicknesses placed in the sound propagation path. An analysis of measurements made with the new instrument and similar measurements, taken under identical experimental conditions, using a popular variable frequency pulsed-phase-locked loop instrument is reported. Uncertainties in both measurement systems are analyzed and discussed. A method for measuring inherent phase shifts, not addressed by previous investigators, within the variable frequency pulsed phase-locked loop system and a derivation of the equations that govern the overall use of variable frequency systems using phase-sensitive comparisons are presented. The effects of a finite pulse length on the measurements of phase velocity in dispersive media are addressed in detail.

  7. Space Applications of Automation, Robotics and Machine Intelligence Systems (ARAMIS), phase 2. Volume 1: Telepresence technology base development

    Science.gov (United States)

    Akin, D. L.; Minsky, M. L.; Thiel, E. D.; Kurtzman, C. R.

    1983-01-01

    The field of telepresence is defined, and overviews of those capabilities that are now available, and those that will be required to support a NASA telepresence effort are provided. Investigation of NASA's plans and goals with regard to telepresence, extensive literature search for materials relating to relevant technologies, a description of these technologies and their state of the art, and projections for advances in these technologies over the next decade are included. Several space projects are examined in detail to determine what capabilities are required of a telepresence system in order to accomplish various tasks, such as servicing and assembly. The key operational and technological areas are identified, conclusions and recommendations are made for further research, and an example developmental program is presented, leading to an operational telepresence servicer.

  8. 新型软硬件结合式相位干涉仪%New Phase Interferometer Combining Hardware and Software Technology

    Institute of Scientific and Technical Information of China (English)

    孟真; 阎跃鹏

    2011-01-01

    提出了一种新型软硬件结合式结构的相位干涉仪.采用射频相位差测量器件AD8302在AD对等效电压信号采样后,采用卡尔曼滤波对等效电压信号进行优化估计、转化为相位差信息,求出目标辐射源的方向角.处理结果显示测量误差降低为AD8302直接输出的1/10左右.%This paper presents a new phase interferometer system combining hardware and software technology to solve the problem. AD8302 is used to measure the phase difference directly instead of the down converter, and to export the equivalent voltage signal of the phase difference. After the equivalent voltage signal is sampled, the Kalman Filter is used to optimize the Voltage signal. Finally, the voltage signal is translated into the phase difference communication which can be used to calculate the location of the target. The calculation result shows that the phase difference measurement error reduces to only about 1/10 after using the Kalman filter.

  9. A low spur, low jitter 10-GHz phase-locked loop in 0.13-μm CMOS technology

    Science.gov (United States)

    Niansong, Mei; Yu, Sun; Bo, Lu; Yaohua, Pan; Yumei, Huang; Zhiliang, Hong

    2011-03-01

    This paper presents a 10-GHz low spur and low jitter phase-locked loop (PLL). An improved low phase noise VCO and a dynamic phase frequency detector with a short delay reset time are employed to reduce the noise of the PLL. We also discuss the methodology to optimize the high frequency prescaler's noise and the charge pump's current mismatch. The chip was fabricated in a SMIC 0.13-μm RF CMOS process with a 1.2-V power supply. The measured integrated RMS jitter is 757 fs (1 kHz to 10 MHz); the phase noise is -89 and -118.1 dBc/Hz at 10 kHz and 1 MHz frequency offset, respectively; and the reference frequency spur is below -77 dBc. The chip size is 0.32 mm2 and the power consumption is 30.6 mW.

  10. A low spur, low jitter 10-GHz phase-locked loop in 0.13-μm CMOS technology

    Institute of Scientific and Technical Information of China (English)

    Mei Niansong; Sun Yu; Lu Bo; Pan Yaohua; Huang Yumei; Hong Zhiliang

    2011-01-01

    This paper presents a 10-GHz low spur and low jitter phase-locked loop (PLL).An improved low phase noise VCO and a dynamic phase frequency detector with a short delay reset time are employed to reduce the noise of the PLL.We also discuss the methodology to optimize the high frequency prescaler's noise and the charge pump's current mismatch.The chip was fabricated in a SMIC 0.13-μm RF CMOS process with a 1.2-V power supply.The measured integrated RMS jitter is 757 fs (1 kHz to 10 MHz); the phase noise is -89 and-118.1 dBc/Hz at 10 kHz and 1 MHz frequency offset,respectively; and the reference frequency spur is below -77 dBc.The chip size is 0.32 mm2 and the power consumption is 30.6 mW.

  11. The LCPDI: A Compact and Robust Phase-Shifting Point-Diffraction Interferometer Based on Dye-Doped LC Technology

    Energy Technology Data Exchange (ETDEWEB)

    Marshall, K.L.; Adelsberger, K.; Myhre, G.; Griffin, D.W.

    2006-08-18

    Point-diffraction interferometers, by design, are much less sensitive to environmental disturbances than dual-path interferometers, but, until very recently, have not been capable of phase shifting. The liquid crystal point diffraction interferometer (LCPDI) utilizes a dye-doped, liquid crystal (LC), electro-optical device that functions as both the point-diffraction source and the phase-shifting element, yielding a phase-shifting diagnostic device that is significantly more compact and robust while also using fewer optical elements than conventional dual-path interferometers. These attributes make the LCPDI of special interest for diagnostic applications in the scientific, commercial, military, and industrial sectors, where vibration insensitivity, power requirements, size, weight, and cost are critical issues.

  12. 转轮焊缝相控阵超声检测工艺研究%Study on Ultrasonic Testing Technology for Runner Weld Phased Array

    Institute of Scientific and Technical Information of China (English)

    肖凯; 李晓红; 马庆增

    2014-01-01

    针对常规超声检测方法在进行三维多变断面转轮焊缝检测时存在的局限性,介绍了相控阵超声检测技术的特点。根据转轮焊缝容易出现的缺陷类型制作了模拟试块,设计超声相控阵检测工艺并进行检测,对检出缺陷进行常规超声检测验证。结果表明,超声相控阵技术可明显提高检测效率及检出能力,但对位向不好的层间未熔合,仍需配合直探头在焊缝弧面进行补充检测。%Aiming at existing boundedness of conventional ultrasonic testing method in testing 3D changeable cross-section runner weld,this paper introduces features of phased array ultrasonic testing technology.According to defect types easy to appear of runner weld,it makes simulation samples and designs ultrasonic phased array testing technology to test detected de-fects and proceed conventional ultrasonic testing verification.The result indicates that ultrasonic phased array technology is obviously able to improve testing effectiveness and detecting ability but it is not able to finish fuse of interlamination of bad exposure.Thus,it is necessary to carry out supplementary testing on the weld cambered surface by coordinating with normal probe.

  13. Quadrature Phase Shift Keying (QPSK Modulator Design using Multi-Port Network in Multilayer Microstrip-Slot Technology for Wireless Communication Applications

    Directory of Open Access Journals (Sweden)

    N. Seman

    2015-06-01

    Full Text Available The design of the quadrature phase shift keying (QPSK modulator by using a multi-port network is proposed in this article for the use in wireless communication applications. The multi-port network is in the form of multilayer microstrip-slot technology. This multi-port network is composed of three 3-dB rectangular-shaped directional couplers with virtual stubs and an equal power division divider with in-phase characteristic. The design is performed by applying a full-wave electromagnetic simulation software, CST Microwave Studio (CST MWS. Keysight’s Advanced Design System (ADS is applied in analyzing and evaluating the QPSK constellation of the proposed modulator. This comparatively small size of proposed design has been fabricated, and its wideband performance of 2 to 6 GHz is verified.

  14. Benefits of Advanced Control Room Technologies: Phase One Upgrades to the HSSL, Research Plan, and Performance Measures

    Energy Technology Data Exchange (ETDEWEB)

    Le Blanc, Katya [Idaho National Lab. (INL), Idaho Falls, ID (United States); Joe, Jeffrey [Idaho National Lab. (INL), Idaho Falls, ID (United States); Rice, Brandon [Idaho National Lab. (INL), Idaho Falls, ID (United States); Ulrich, Thomas [Idaho National Lab. (INL), Idaho Falls, ID (United States); Boring, Ronald [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-05-01

    Control Room modernization is an important part of life extension for the existing light water reactor fleet. None of the 99 currently operating commercial nuclear power plants in the U.S. has completed a full-scale control room modernization to date. A full-scale modernization might, for example, entail replacement of all analog panels with digital workstations. Such modernizations have been undertaken successfully in upgrades in Europe and Asia, but the U.S. has yet to undertake a control room upgrade of this magnitude. Instead, nuclear power plant main control rooms for the existing commercial reactor fleet remain significantly analog, with only limited digital modernizations. Previous research under the U.S. Department of Energy’s Light Water Reactor Sustainability Program has helped establish a systematic process for control room upgrades that support the transition to a hybrid control room. While the guidance developed to date helps streamline the process of modernization and reduce costs and uncertainty associated with introducing digital control technologies into an existing control room, these upgrades do not achieve the full potential of newer technologies that might otherwise enhance plant and operator performance. The aim of the control room benefits research is to identify previously overlooked benefits of modernization, identify candidate technologies that may facilitate such benefits, and demonstrate these technologies through human factors research. This report describes the initial upgrades to the HSSL and outlines the methodology for a pilot test of the HSSL configuration.

  15. Measuring Meaningful Outcomes in Consequential Contexts: Searching for a Happy Medium in Educational Technology Research (Phase II)

    Science.gov (United States)

    Ross, Steven M.; Morrison, Jennifer R.

    2014-01-01

    In a paper published 25 years ago, Ross and Morrison ("Educ Technol Res Dev" 37(1):19-33, 1989) called for a "happy medium" in educational technology research, to be achieved by balancing high rigor of studies (internal validity) with relevance to real-world applications (external validity). In this paper, we argue that,…

  16. SITE PROGRAM DEMONSTRATION ECO LOGIC INTERNATIONAL GAS-PHASE CHEMICAL REDUCTION PROCESS, BAY CITY, MICHIGAN TECHNOLOGY EVALUATION REPORT

    Science.gov (United States)

    The SITE Program funded a field demonstration to evaluate the Eco Logic Gas-Phase Chemical Reduction Process developed by ELI Eco Logic International Inc. (ELI), Ontario, Canada. The Demonstration took place at the Middleground Landfill in Bay City, Michigan using landfill wa...

  17. Amorphous silicon photovoltaic manufacturing technology - Phase 2A. Annual subcontract report, May 1, 1993--April 30, 1994

    Energy Technology Data Exchange (ETDEWEB)

    Duran, G.; Mackamul, K.; Metcalf, D. [Utility Power Group, Chatsworth, CA (United States)

    1995-01-01

    Utility Power Group (UPG), and its lower-tier subcontractor, Advanced Photovoltaic Systems, Inc. (APS) have conducted efforts in developing their manufacturing lines. UPG has focused on the automation of encapsulation and termination processes developed in Phase I. APS has focused on completion of the encapsulation and module design tasks, while continuing the process and quality control and automation projects. The goal is to produce 55 watt (stabilized) EP50 modules in a new facility. In the APS Trenton EUREKA manufacturing facility, APS has: (1) Developed high throughput lamination procedures; (2) Optimized existing module designs; (3) Developed new module designs for architectural applications; (4) Developed enhanced deposition parameter control; (5) Designed equipment required to manufacture new EUREKA modules developed during Phase II; (6) Improved uniformity of thin-film materials deposition; and (7) Improved the stabilized power output of the APS EP50 EUREKA module to 55 watts. In the APS Fairfield EUREKA manufacturing facility, APS has: (1) Introduced the new products developed under Phase I into the APS Fairfield EUREKA module production line; (2) Increased the extent of automation in the production line; (3) Introduced Statistical Process Control to the module production line; and (4) Transferred-progress made in the APS Trenton facility into the APS Fairfield facility.

  18. Technical and economic assessment of processes for the production of butanol and acetone. Phase two: analysis of research advances. Energy Conversion and Utilization Technologies Program

    Energy Technology Data Exchange (ETDEWEB)

    None

    1984-08-01

    The initial objective of this work was to develop a methodology for analyzing the impact of technological advances as a tool to help establish priorities for R and D options in the field of biocatalysis. As an example of a biocatalyzed process, butanol/acetone fermentation (ABE process) was selected as the specific topic of study. A base case model characterizing the technology and economics associated with the ABE process was developed in the previous first phase of study. The project objectives were broadened in this second phase of work to provide parametric estimates of the economic and energy impacts of a variety of research advances in the hydrolysis, fermentation and purification sections of the process. The research advances analyzed in this study were based on a comprehensive literature review. The six process options analyzed were: continuous ABE fermentaton; vacuum ABE fermentation; Baelene solvent extraction; HRI's Lignol process; improved prehydrolysis/dual enzyme hydrolysis; and improved microorganism tolerance to butanol toxicity. Of the six options analyzed, only improved microorganism tolerance to butanol toxicity had a significant positive effect on energy efficiency and economics. This particular process option reduced the base case production cost (including 10% DCF return) by 20% and energy consumption by 16%. Figures and tables.

  19. 浅谈激光束表面相变硬化技术%On Laser Beam Surface Phase Transformation Hardening Technology

    Institute of Scientific and Technical Information of China (English)

    李义田

    2013-01-01

    激光束表面相变硬化技术是激光热处理中研究最早、最多、进展最快、应用最广的一种新工艺,适用于大多数材料和不同形状零件的不同部位,可提高零件的耐磨性和疲劳强度。本文简要介绍了激光束表面相变硬化技术的原理以及应用。%Laser beam surface phase transformation hardening technology is the first and most researched new laser heat treatment technique with rapid progress and the widest application. It is suitable for most materials and different parts of different shaped components. It can improve the abrasive resistance and fatigue strength of the components. This article mainly introduces the principle and application of laser beam surface phase transformation hardening technology.

  20. Lifecycle Industry GreenHouse gas, Technology and Energy through the Use Phase (LIGHTEnUP) – Analysis Tool User’s Guide

    Energy Technology Data Exchange (ETDEWEB)

    Morrow, William R. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Environmental Energy Technologies Division; Shehabi, Arman [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Environmental Energy Technologies Division; Smith, Sarah [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Environmental Energy Technologies Division

    2016-06-22

    The LIGHTEnUP Analysis Tool (Lifecycle Industry GreenHouse gas, Technology and Energy through the Use Phase) has been developed for The United States Department of Energy’s (U.S. DOE) Advanced Manufacturing Office (AMO) to forecast both the manufacturing sector and product life-cycle energy consumption implications of manufactured products across the U.S. economy. The tool architecture incorporates publicly available historic and projection datasets of U.S. economy-wide energy use including manufacturing, buildings operations, electricity generation and transportation. The tool requires minimal inputs to define alternate scenarios to business-as-usual projection data. The tool is not an optimization or equilibrium model and therefore does not select technologies or deployment scenarios endogenously. Instead, inputs are developed exogenous to the tool by the user to reflect detailed engineering calculations, future targets and goals, or creative insights. The tool projects the scenario’s energy, CO2 emissions, and energy expenditure (i.e., economic spending to purchase energy) implications and provides documentation to communicate results. The tool provides a transparent and uniform system of comparing manufacturing and use-phase impacts of technologies. The tool allows the user to create multiple scenarios that can reflect a range of possible future outcomes. However, reasonable scenarios require careful attention to assumptions and details about the future. This tool is part of an emerging set of AMO’s life cycle analysis (LCA) tool such as the Material Flows the Industry (MFI) tool, and the Additive Manufacturing LCA tool.

  1. Advanced industrial gas turbine technology readiness demonstration program. Phase II. Final report: compressor rig fabrication assembly and test

    Energy Technology Data Exchange (ETDEWEB)

    Schweitzer, J. K.; Smith, J. D.

    1981-03-01

    The results of a component technology demonstration program to fabricate, assemble and test an advanced axial/centrifugal compressor are presented. This work was conducted to demonstrate the utilization of advanced aircraft gas turbine cooling and high pressure compressor technology to improve the performance and reliability of future industrial gas turbines. Specific objectives of the compressor component testing were to demonstrate 18:1 pressure ratio on a single spool at 90% polytropic efficiency with 80% fewer airfoils as compared to current industrial gas turbine compressors. The compressor design configuration utilizes low aspect ratio/highly-loaded axial compressor blading combined with a centrifugal backend stage to achieve the 18:1 design pressure ratio in only 7 stages and 281 axial compressor airfoils. Initial testing of the compressor test rig was conducted with a vaneless centrifugal stage diffuser to allow documentation of the axial compressor performance. Peak design speed axial compressor performance demonstrated was 91.8% polytropic efficiency at 6.5:1 pressure ratio. Subsequent documentation of the combined axial/centrifugal performance with a centrifugal stage pipe diffuser resulted in the demonstration of 91.5% polytropic efficiency and 14% stall margin at the 18:1 overall compressor design pressure ratio. The demonstrated performance not only exceeded the contract performance goals, but also represents the highest known demonstrated compressor performance in this pressure ratio and flow class. The performance demonstrated is particularly significant in that it was accomplished at airfoil loading levels approximately 15% higher than that of current production engine compressor designs. The test results provide conclusive verification of the advanced low aspect ratio axial compressor and centrifugal stage technologies utilized.

  2. PEG-salt aqueous two-phase systems: an attractive and versatile liquid-liquid extraction technology for the downstream processing of proteins and enzymes.

    Science.gov (United States)

    Glyk, Anna; Scheper, Thomas; Beutel, Sascha

    2015-08-01

    Nowadays, there is an increasing demand to establish new feasible, efficient downstream processing (DSP) techniques in biotechnology and related fields. Although several conventional DSP technologies have been widely employed, they are usually expensive and time-consuming and often provide only low recovery yields. Hence, the DSP is one major bottleneck for the commercialization of biological products. In this context, polyethylene glycol (PEG)-salt aqueous two-phase systems (ATPS) represent a promising, efficient liquid-liquid extraction technology for the DSP of various biomolecules, such as proteins and enzymes. Furthermore, ATPS can overcome the limitations of traditional DSP techniques and have gained importance for applications in several fields of biotechnology due to versatile advantages over conventional DSP methods, such as biocompatibility, technical simplicity, and easy scale-up potential. In the present review, various practical applications of PEG-salt ATPS are presented to highlight their feasibility to operate as an attractive and versatile liquid-liquid extraction technology for the DSP of proteins and enzymes, thus facilitating the approach of new researchers to this technique. Thereby, single- and multi-stage extraction, several process integration methods, as well as large-scale extraction and purification of proteins regarding technical aspects, scale-up, recycling of process chemicals, and economic aspects are discussed.

  3. Workshop `Measurement technology for steady state and transient multi phase flows`; Workshop `Messtechnik fuer stationaere und transiente Mehrphasenstroemungen`

    Energy Technology Data Exchange (ETDEWEB)

    Prasser, H.M. [ed.

    1997-12-01

    There is hardly another area of physics which has a comparable multiplicity of phenomena, like flow in multi-phase mixtures. The wishes of experimenters regarding measurement technique are correspondingly great: Apart from the conventional parameters of pressure, temperature and speed of flow, as great a collection with resolution of the instantaneous phase distribution is required. Also, the phases themselves frequently consists of several components, whose concentration should also be measured. The enormous progress which has recently been made with laser optics and tomographic processes, must be compared with a long list of unsolved problems, above all where non-contact measurement is concerned. The attempts at solutions are multifarious, the need for the exchange of experience is great and the comparson of measurement processes with one another must be strengthened. The workshop has set itself these targets. (orig.) [Deutsch] Es gibt kaum ein anderes Gebiet der Physik, das eine vergleichbare Vielfalt der Erscheinungen aufweist wie Stroemungen von Mehrphasengemischen. Entsprechend gross sind die Wuensche der Experimentatoren hinsichtlich der Messtechnik: Neben den klassischen Parametern Druck, Temperatur und Stroemungsgeschwindigkeit wird eine moeglichst hoch aufloesende Erfassung der momentanen Phasenverteilung benoetigt. Ausserdem bestehen die Phasen selbst haeufig aus mehreren Komponenten, deren Konzentration ebenfalls gemessen werden soll. Den enormen Fortschritten, ie mit laseroptischen und tomographischen Verfahren in letzter Zeit gemacht wurden, steht nach wie vor eine lange Liste bisher ungeloester Aufgaben gegenueber, vor allen Dingen, wenn beruehrungslos gemessen werden soll. Die Loesungsansaetze sind vielfaeltig, der Bedarf an Erfahrungsaustausch ist gross, der Vergleich der Messverfahren untereinander muss verstaerkt werden. Diesen Zielen hatte sich der Workshop ``Messtechnik fuer tationaere und transiente Mehrphasenstroemungen`` verschrieben.

  4. Recent progress, challenges and trends in trace determination of drug analysis using molecularly imprinted solid-phase microextraction technology.

    Science.gov (United States)

    Ansari, Saeedeh; Karimi, Majid

    2017-03-01

    The quantification of drugs in biological samples is a significant task for determination of the physiological efficiency in evaluated drugs in the drug discovery. To analysis of the chemical compounds at the trace and ultratrace levels, adequate analytical procedures should be applied. Therefore, sample preparation method undoubtedly is the most important stage in the trace determination process. In spite of the great growth of analytical instrumentation during the recent years, sample preparation is still nowadays considered the impasse of the all analytical procedure, especially in drugs analysis. Because of the low concentration level of drugs in blood, plasma, and the diversity of the metabolites, the chosen extraction technique should be almost perfect. Solid-phase microextraction (SPME) is a powerful, simple, fast and an equilibrium-based sample preparation method that permits integration of sampling, sample clean-up, and pre-concentration in a single solvent-free step for chemical analysis. Molecularly imprinted polymers (MIPs) that provided by the presence of a template during their synthesis are the stable polymers with molecular recognition abilities and excellent materials which provide selectivity to sample preparation. Because of its characteristics such as easy preparation, high selectivity, and chemical stability, MIP is widely utilized in many analytical fields. Accordingly, the molecular imprinting and SPME methods combination would prepare a strong analytical instrumentation which comprises simplicity, flexibility, and the selectivity characteristics of both methods. This review focuses on the application of solid-phase microextraction method coupled with molecularly imprinted polymers, namely molecularly imprinted solid-phase microextraction (MISPME), for trace determination in drug analysis.

  5. Use of a Combined Technology of Ultrasonication, Three-Phase Partitioning, and Aqueous Enzymatic Oil Extraction for the Extraction of Oil from Spirogyra sp.

    Directory of Open Access Journals (Sweden)

    Adisheshu Reddy

    2014-01-01

    Full Text Available Algal oil from Spirogyra sp. was extracted using a combined technology of ultrasonication, three-phase partitioning, and aqueous enzymatic oil extraction. Ultrasonication was done to rupture the cell wall and papain was used for an easier release of the trapped oil. The salt concentration for three-phase partitioning, preincubation period with (or without the protease, and its operational temperature were optimized for a maximum possible yield of the oil and the effect of ultrasonication, and three-phase partitioning with (or without the protease were studied. It was found that under optimized conditions at 50% ammonium sulphate concentration using tert-butanol (in 1 : 1, v/v ratio a presonicated and papain treated algal suspension could produce 24% (w/w, dry weight oil within few hours which was ten times higher as compared to the oil obtained by Soxhlet extraction using hexane and two times higher than the oil obtained without using the protease.

  6. Application of the NOx Reaction Model for Development of Low-NOx Combustion Technology for Pulverized Coals by Using the Gas Phase Stoichiometric Ratio Index

    Directory of Open Access Journals (Sweden)

    Kenji Yamamoto

    2011-03-01

    Full Text Available We previously proposed the gas phase stoichiometric ratio (SRgas as an index to evaluate NOx concentration in fuel-rich flames. The SRgas index was defined as the amount of fuel required for stoichiometric combustion/amount of gasified fuel, where the amount of gasified fuel was the amount of fuel which had been released to the gas phase by pyrolysis, oxidation and gasification reactions. In the present study we found that SRgas was a good index to consider the gas phase reaction mechanism in fuel-rich pulverized coal flames. When SRgas < 1.0, NOx concentration was strongly influenced by the SRgas value. NOx concentration was also calculated by using a reaction model. The model was verified for various coals, particle diameters, reaction times, and initial oxygen concentrations. The most important reactions were gas phase NOx reduction reactions by hydrocarbons. The hydrocarbon concentration was estimated based on SRgas. We also investigated the ratio as an index to develop a new low-NOx combustion technology for pulverized coals. We examined the relation between local SRgas distribution in the fuel-rich region in the low-NOx flame and NOx emissions at the furnace exit, by varying burner structures. The relationship between local SRgas value and local NOx concentration was also examined. When a low-NOx type burner was used, the value of SRgas in the flame was readily decreased. When the local SRgas value was the same, it was difficult to influence the local NOx concentration by changing the burner structure. For staged combustion, the most important item was to design the burner structure and arrangement so that SRgas could be lowered as much as possible just before mixing with staged air.

  7. 相位补偿技术在无线光通信中的应用%Phase Compensation Technology in Wireless Optical Communication

    Institute of Scientific and Technical Information of China (English)

    王志华; 龚哲兮; 郭鹏展

    2016-01-01

    Atmospheric refractive index, resulted from atmospheric turbulence, would cause atmospheric turbulence effects along with the change of time and space, mainly including intense scintillation, phase fluctuation, beam drift and beam expansion, thus increasing the BER and shortening the communication distance . By studying the phase compensation technology and enhancing the performance of communication system, a coherent phase compensation system model is established. Phase compensation parameters com-pensation order, normalized receiving aperture, outer scale of turbulence parameter and the impact of pow-er index BER system are all analyzed. Finally, the best parameters to achieve the optimal BER are found, and this of great significance in effectively overcoming the interference of atmospheric turbulence and guar-anteeing the normal operation of wireless optical communication system.%大气的湍流运动所导致的大气折射率随时间和空间变化会引起大气湍流效应,主要包括光强闪烁、相位波动、光束漂移和光束扩展等,会增大误码率和缩短通信距离。通过研究相位补偿技术提升通信系统性能,建立了相位补偿相干系统模型,分析了相位补偿参数补偿阶数、归一化接收孔径,湍流参数湍流外尺度、功率指数对系统误码率的影响,并找到达到最优误码率的最佳参数,对有效克服大气湍流效应的干扰,保证无线光通信系统正常工作具有十分重要的意义。

  8. Amorphous silicon photovoltaic maufacturing technology, Phase 2A. Annual subcontract report, 1 May 1992--30 April 1993

    Energy Technology Data Exchange (ETDEWEB)

    Duran, G.; Mackamul, K.; Metcalf, D. [Utility Power Group, Chatsworth, CA (United States); Koniares, A.; Skinner, D.; Volltrauer, H. [Advanced Photovoltaic Systems, Inc., Princeton, NJ (United States)

    1994-02-01

    This report describes teamed research by Utility Power Group (UPG) and Advanced Photovoltaic Systems, Inc., (APS) to advance photovoltaic (PV) manufacturing technologies, reduce module production costs, increase average module performance, and increase the existing production capacity. UPG and APS conducted parallel efforts to develop their manufacturing lines. Areas of focus included encapsulation and termination, product design, process and quality control, and automation. UPG improved the existing encapsulation system by developing advanced encapsulation materials and processes, resulting in a module that does not require backing glass. UPG also developed advanced termination materials and processes. APS performed development activities centered on the EUREKA manufacturing line. Developments in the APS EUREKA encapsulation system were in addition to the UPG activity on encapsulation, and they offer an alternative approach to the problems of encapsulating large-area, thin-film modules.

  9. Introduction of a new opto-electrical phase-locked loop in CMOS technology: the PMD-PLL

    Science.gov (United States)

    Ringbeck, Thorsten; Schwarte, Rudolf; Buxbaum, Bernd

    1999-12-01

    The huge and increasing need of information in the industrial world demands an enormous potential of bandwidth in telecommunication systems. Optical communication provides all participants with the whole spectrum of digital services like videophone, cable TV, video conferencing and online services. Especially fast and low cost opto-electrical receivers are badly needed in order to expand fiber networks to every home (FTTH--fiber to the home or FTTD--fiber to the desk, respectively). This paper proposes a new receiver structure which is designed to receiver optical data which are encoded by code division multiple access techniques (CDMA). For data recovery in such CDMA networks phase locked loops (PLL) are needed, which synchronize the local oscillator with the incoming clock. In optical code division multiple access networks these PLLs could be realized either with an electrical PLL after opto-electrical converting or directly in the optical path with a pure optical PLL.

  10. Research of beam conditioning technologies using continuous phase plate, Multi-FM smoothing by spectral dispersion and polarization smoothing

    Science.gov (United States)

    Zhang, Rui; Jia, Huaiting; Tian, Xiaocheng; Yuan, Haoyu; Zhu, Na; Su, Jingqin; Hu, Dongxia; Zhu, Qihua; Zheng, Wanguo

    2016-10-01

    In the research of inertial confinement fusion, laser plasma interaction (LPI) is becoming a key problem that affects ignition. Here, multi-frequency modulation (Multi-FM) smoothing by spectral dispersion (SSD), continuous phase plate (CPP) and polarization smoothing (PS) were experimentally studied and implemented on the SG-III laser facility. After using these techniques, the far field distribution of SG-Ⅲ laser facility can be adjusted, controlled and repeated accurately. The output spectrums of the cascade phase modulators used for Multi-FM SSD were stable and the FM-to-AM effect can be restrained. Experiments on SG-III laser facility indicate that when the number of color cycles adopts 1, imposing SSD with 3.3 times diffraction limit (TDL) did not lead to pinhole closure in the spatial filters of preamplifier and main amplifiers with 30-TDL pinhole size. The nonuniformity of the focal spots using Multi-FM SSD, CPP and PS drops to 0.18, comparing to 0.26 with CPP+SSD, 0.57 with CPP+PS and 0.84 with only CPP and wedged lens. Polarization smoothing using flat birefringent plate in the convergent beam of final optics assembly (FOA) was studied. The PS plates were manufactured and equipped on SG-III laser facility for LPI research. Combined beam smoothing and polarization manipulation were also studied to solve the LPI problem. Results indicate that through adjusting dispersion directions of SSD beams in a quad, two dimensional SSD can be obtained. Using polarization control plate (PCP), polarization on the near field and far field can be manipulated, providing new method to solve LPI problem in indirect drive laser fusion.

  11. 基于相控投切技术的无功补偿装置%Reactive Power Compensation Device Based on Phase-Controlled Switching Technology

    Institute of Scientific and Technical Information of China (English)

    汪玉凤; 王静; 许晓禹; 费翔

    2013-01-01

    In order to reduce inrush current and over-voltage which caused by random switch capacitors during reactive power compensation in coal mine power network,this paper designs a kind of reactive power compensation device based on promising“soft switch”technology that is phase-controlled switching technology, takes long life, low cost vacuum contactors with permanent magnetic actuator as switching ,this actuator has little action time dispersion than traditional spring actuator and electromagnetic actuator, in order to meet action time high degree of consistency, this paper compensates vacuum contactors action time dispersion, uses modular ideas to design reactive power compensation system structure diagram,together with the appropriate control strategy, completion the capacitor bank switching at a predetermined phase.finally this system makes experiment test in certain mine coal 6KV power network,experiment results show that phase-controlled switching technology of reactive power compensation effect is unmatched by traditional others methods, practice proved that this system has a certain value.%  为了减小煤矿电网在无功补偿时随机投切电容器组给电网带来的涌流及过电压,设计了一套以具有发展前景的“软开关”技术即相控技术为根基的无功补偿装置,采用寿命长、成本低的带有永磁机构的真空接触器作为投切开关,该机构较传统的弹簧机构和电磁机构动作分散性小,为满足动作时间高度一致,对真空接触器动作时间的分散性进行有效补偿,并采用模块化的思想理念建立系统整体结构,采取适当的控制策略完成预期位置投切。最后本系统进行了仿真,并在某矿6kv 电网中进行了实验测试,仿真和实验结果都表明本系统能有效的补偿系统无功,有一定的应用价值。

  12. JV TASK 45-MERCURY CONTROL TECHNOLOGIES FOR ELECTRIC UTILITIES BURNING LIGNITE COAL, PHASE I BENCH-AND PILOT-SCALE TESTING

    Energy Technology Data Exchange (ETDEWEB)

    John H. Pavlish; Michael J. Holmes; Steven A. Benson; Charlene R. Crocker; Edwin S. Olson; Kevin C. Galbreath; Ye Zhuang; Brandon M. Pavlish

    2003-10-01

    The Energy & Environmental Research Center has completed the first phase of a 3-year, two-phase consortium project to develop and demonstrate mercury control technologies for utilities that burn lignite coal. The overall project goal is to maintain the viability of lignite-based energy production by providing utilities with low-cost options for meeting future mercury regulations. Phase I objectives are to develop a better understanding of mercury interactions with flue gas constituents, test a range of sorbent-based technologies targeted at removing elemental mercury (Hg{sup o}) from flue gases, and demonstrate the effectiveness of the most promising technologies at the pilot scale. The Phase II objectives are to demonstrate and quantify sorbent technology effectiveness, performance, and cost at a sponsor-owned and operated power plant. Phase I results are presented in this report along with a brief overview of the Phase II plans. Bench-scale testing provided information on mercury interactions with flue gas constituents and relative performances of the various sorbents. Activated carbons were prepared from relatively high-sodium lignites by carbonization at 400 C (752 F), followed by steam activation at 750 C (1382 F) and 800 C (1472 F). Luscar char was also steam-activated at these conditions. These lignite-based activated carbons, along with commercially available DARCO FGD and an oxidized calcium silicate, were tested in a thin-film, fixed-bed, bench-scale reactor using a simulated lignitic flue gas consisting of 10 {micro}g/Nm{sup 3} Hg{sup 0}, 6% O{sub 2}, 12% CO{sub 2}, 15% H{sub 2}O, 580 ppm SO{sub 2}, 120 ppm NO, 6 ppm NO{sub 2}, and 1 ppm HCl in N{sub 2}. All of the lignite-based activated (750 C, 1382 F) carbons required a 30-45-minute conditioning period in the simulated lignite flue gas before they exhibited good mercury sorption capacities. The unactivated Luscar char and oxidized calcium silicate were ineffective in capturing mercury. Lignite

  13. A wide range ultra-low power Phase-Locked Loop with automatic frequency setting in 130 nm CMOS technology for data serialisation

    Science.gov (United States)

    Firlej, M.; Fiutowski, T.; Idzik, M.; Moroń, J.; Świentek, K.

    2015-12-01

    The design and measurements results of a wide frequency range ultra-low power Phase-Locked Loop (PLL) for applications in readout systems of particle physics detectors are presented. The PLL was fabricated in a 130 nm CMOS technology. To allow the implementation of different data serialisation schemes multiple division factors (6, 8, 10, 16) were implemented in the PLL feedback loop. The main PLL block—VCO works in 16 frequency ranges/modes, switched either manually or automatically. A dedicated automatic frequency mode switching circuit was developed to allow simple frequency tuning. Although the PLL was designed and simulated for a frequency range of 30 MHz-3 GHz, due to the SLVS interface limits, the measurements were done only up to 1.3 GHz. The full PLL functionality was experimentally verified, confirming a very low and frequency scalable power consumption (0.7 mW at 1 GHz).

  14. Design of a surface-based factory for the production of life support and technology support products. Phase 2: Integrated water system for a space colony

    Science.gov (United States)

    1989-01-01

    Phase 2 of a conceptual design of an integrated water treatment system to support a space colony is presented. This includes a breathable air manufacturing system, a means of drilling for underground water, and storage of water for future use. The system is to supply quality water for biological consumption, farming, residential and industrial use and the water source is assumed to be artesian or subsurface and on Mars. Design criteria and major assumptions are itemized. A general block diagram of the expected treatment system is provided. The design capacity of the system is discussed, including a summary of potential users and the level of treatment required; and, finally, various treatment technologies are described.

  15. SRH液相循环加氢技术的开发及工业应用%Development and commercial application of SRH liquid phase recycling hydrogenation technology

    Institute of Scientific and Technical Information of China (English)

    宋永一; 方向晨; 刘继华

    2012-01-01

    SRH liquid phase recycling hydrogenation technology takes the advantages of hydrogen,dissolved in liquid phase,to meet the hydrogenation reaction requirements,in which hydrogen concentration grads in the oil can act as the driving force for the reaction.SRH technology is characterized by its catalyst bed fully submersed in the liquid phase and close to isotherm operation as well as its high reaction efficiency and high target product yield.In addition,both the unit investment and operating costs are lower because of fewer high pressure devices adopted and less heat loss.The pilot plant results showed that SRH technology had strong adaptability to feed and can be applied to process different diesel under suitable process conditions.The products were also with good quality.Besides,the commercial application results from SRH diesel phase liquid recycling hydrogenation unit with capacity of 20×104 t/a in Chang-ling Refinery showed that:qualified 3# jet fuel can be produced using kerosene as feed;clean diesel with meeting national Ⅲ diesel specifications can be produced by blends of AGO,LCO as well as blends of AGO,CGO;clean diesel meeting national Ⅳ diesel specifications can be produced by AGO.Meanwhile,the longer stable running of this unit proves that SRH diesel products liquid recycling hydrogenation technology and key devices are mature and reliable.%SRH柴油液相循环加氢技术是利用油品中的溶解氢来满足加氢反应的需要,以油品中氢浓度的梯度变化作为反应的推动力。该技术催化剂床层处于全液相中、接近等温操作,反应效率高、目的产品收率高;整套装置高压设备少,热量损失小,装置投资和操作费用均低。中型装置试验结果证明,SRH液相循环加氢技术可以在适宜的工艺条件下加工各种柴油原料,对原料适应性强、产品质量好。长岭20万吨/年SRH液相循环加氢装置工业应用结果表明:以煤油为原料可以生产合格的3#喷气

  16. 相控阵技术检测钢中缺陷%Detecting Defect of Steelw ith Phase Array Technology

    Institute of Scientific and Technical Information of China (English)

    朴启霞; 栗雪

    2015-01-01

    我公司生产的轧材(规格为Ф100mm-Ф350mm),月产量在2万t左右,钢中缺陷种类较多,特别是单点夹杂以及其它有方向性的小裂纹,手工超声波检验时,因盲区、噪音等原因极易漏检,为满足生产检验质量及数量要求,我厂于2013年引进了一套加拿大Olympus NDT公司生产的国际领先的相控阵超声检测系统.%Company's rolled products (specifications are fromФ100mm-Ф350mm), and per month output is about 20 thousands tons.Defect types of steel are more, especially small crack of single part inclusion and other direction cracks.And due to the blind spot, noise and other reasons detecting could been easily missed by manual ultrasonic inspection.in 2013 the leading ultrasonic phased array testing system of a Canadian Olympus NDT company production was introduced to meet production in-spection of quality.

  17. The Use of Biofiltration Technology and 3-dimensional Cubical Bamboo Shelter for Nursery Phase Productivity Improvement of Giant Freshwater Prawn

    Directory of Open Access Journals (Sweden)

    Gede Suantika

    2012-07-01

    Full Text Available This experiment aimed to know the effect of nitrifying bacteria and Chlorellasp. addition and different number of 3-dimensional cubical bamboo shelter in enhancing growth performance of Giant Freshwater Prawn (Macrobrachium rosenbergii de Man during nursery phase in indoor system. During28 days of culture, treatment II (4 shelters addition~40% culture volume occupation resulted in better prawn growth and culture performance compared to control (no shelter addition (p<0,05. At the end of experiment, treatment II shown the highest biomass, SGR, mean body weight and length of the prawn with (1.96+0.05 g.cage-1, 8.24%BW.day-1, (2.18 +0,89 g and (6.50 +0.91 cm, respectively. However, the results were not significantly different compared to treatment I (2 shelters addition~20%culture volume occupation. Survival rate the two treatments (treatment I="90"%, and treatment II="92"% was significantly higher compared to control (78%. During the experiments, increase of ammonium concentration and nitrate can be controlled and maintained by addition of nitrifying bacteria and microalgae which can keep the microbial loop between ammonium reduction by bacteria and nitrate uptake by microalgae in balance. Addition of nitrifying bacteria and microalgae and also availability of 40% bamboo shelter occupation in the culture can enhance prawn culture productivity.

  18. New technology for controlling NOx from jet engine test cells. Phase 1. Final report, August 1988-February 1989

    Energy Technology Data Exchange (ETDEWEB)

    Lyon, R.K.

    1995-01-01

    For some time the U.S. Air Force has been concerned with NOx emissions from jet engine test cells operated by the Air Force. While there are no regulations limiting the NOx emissions of these facilities, such regulations could develop in the near future and would pose significant problems for the Air Force because no available technology is suited for application to jet engine test cells. This report describes laboratory studies of a new NOx control process based on the surprising ability of barium oxide to rapidly capture NO, a process that could be ideally suited to controlling NOx emission from jet engine test cells. Thus, experiments were done in which a simulated exhaust gas containing NO was passed through a bed of either granular barium oxide or barium oxide supported on high-strength alumina. Quantitative NO removals were achieved at space velocities ranging from 2010 to 28,000 v/v/hr temperatures from 21 deg C to 610 deg C, oxygen concentrations of 1.1 to 15.3 percent, and initial NO concentrations from 94 to 1700 ppm. When NO2 was present in the simulated exhaust, it was also removed. The barium oxide was able to capture NO and NO2 in amounts up to at least 23.5 percent of its initial weight. The practical implication is that NOx emissions of a jet engine test cell could be controlled by replacing the acoustic panels now used to decrease the cell`s emission of sound with a set of panel bed filters filled with barium oxide. These panel bed filters would also absorb sound, could fit in the space in the test cell now occupied by the acoustic panels, and would remove NO and NO2 from the exhaust before it is discharged to the environment. This NOx removal would occur spontaneously. without any actions by the personnel operating the test cell and without distracting them in any way from their normal tasks.

  19. Performance Evaluation of Advanced Retrofit Roof Technologies Using Field-Test Data Phase Three Final Report, Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    Biswas, Kaushik [ORNL; Childs, Phillip W [ORNL; Atchley, Jerald Allen [ORNL

    2014-05-01

    This article presents various metal roof configurations that were tested at Oak Ridge National Laboratory in Tennessee, U.S.A. between 2009 and 2013, and describes their potential for reducing the attic-generated space conditioning loads. These roofs contained different combinations of phase change material, rigid insulation, low emittance surface and above-sheathing ventilation, with standing-seam metal panels on top. These roofs were designed to be installed on existing roofs decks, or on top of asphalt shingles for retrofit construction. All the tested roofs showed the potential for substantial energy savings compared to an asphalt shingle roof, which was used as a control for comparison. The roofs were constructed on a series of adjacent attics separated at the gables using thick foam insulation. The attics were built on top of a conditioned room. All attics were vented at the soffit and ridge. The test roofs and attics were instrumented with an array of thermocouples. Heat flux transducers were installed in the roof deck and attic floor (ceiling) to measure the heat flows through the roof and between the attic and conditioned space below. Temperature and heat flux data were collected during the heating, cooling and swing seasons over a 3 year period. Data from previous years of testing have been published. Here, data from the latest roof configurations being tested in year 3 of the project are presented. All test roofs were highly effective in reducing the heat flows through the roof and ceiling, and in reducing the diurnal attic temperature fluctuations.

  20. Technology development for thin strip metal casting, Phase 2: Final technical report. [Melt spinning or planar flow casting

    Energy Technology Data Exchange (ETDEWEB)

    Williams, R.S.

    1988-03-07

    The Phase II program has been conducted by a team of engineers from Westinghouse Electric Corporation and Armco, Inc., with the objective of providing a suitably sized experimental planar flow casting machine, and using it to perform casting trials to address the above technical uncertainties for cast thicknesses and speeds representative of industrial production, and with sufficient duration to diminish thermal transient effects. A nominally 7 ft. diameter water-cooled copper wheel planar flow casting system has been designed, fabricated and installed in a dedicated 15,000 sq. ft. foundry facility are Armco Inc., Middletown, Ohio. This system is capable of casting 3 in. wide strip and operating at surface speeds up to 25 ft/sec. Additionally, the facility also contains a 16 in. diameter water-cooled wheel with interchangeable casting substrates of different materials. This small wheel facility has been adapted to utilize the melt overflow process for casting of 3 in. wide strip. These casting facilities are supported by a 500 lb. induction melting furnace and necessary liquid steel handling equipment. Adequate techniques have been developed for transportation and filtering of liquid steel without undue temperature loss. Good control of the planar flow casting process was not achieved during this program, however given such control and the adoption of clean steel practices, the inference is that the process will be capable of producing strip which is readily cold-rollable in the as-cast condition. After cold rolling and annealing, such material should have useful mechanical properties. 8 refs., 112 figs., 10 tabs.

  1. 管焊缝相控阵超声工程临界评定%Phased Array Ultrasonic Technology Application on Engineering Critical Assessment of Piping Welds

    Institute of Scientific and Technical Information of China (English)

    李衍

    2015-01-01

    介绍相控阵超声检测( PAUT )在工程临界评定(ECA)中的应用。利用有已知疲劳裂纹的“退役”试样,通过“亮测”和“盲测”,进行PAUT工艺评定,并将PAUT数据与TOFD、MT和VT数据进行比照。结果表明PAUT测评值可信可靠,适于ECA,也符合国际法规ASME BPVC 最新版(2013)相关要求。%The application of phased array ultrasonic testing (PAUT) technology to Engineering Critical Assessment (ECA) is described. Using some retired-for-cause samples with service-induced fatigue cracks with known height, through open and blind trials, the used phased array procedure is validated. The data obtained by PAUT is compared with the data of TOFD,MT and VT. And results show that PAUT evaluation is credible and reliable, and suitable for ECA, conforming to the related requirements of the latest edition ASME (2013).

  2. The integration of Mathematics, Science and Technology in early childhood education and the foundation phase: The role of the formation of the professional identities of beginner teachers

    Directory of Open Access Journals (Sweden)

    Marie Botha

    2015-02-01

    Full Text Available This article focuses on the professional identity formation of six beginner teachers (three in early childhood education and three in the foundation phase, involved in the teaching of Mathematics, Science and Technology (MST. Attention is in particular being paid to the role of professional identity in how they applied innovative teaching methods such as enquiry-based teaching. The study is based on the personal narratives of the six teachers, regarding their own learning experiences in MST, the impact of their professional training at an institution of higher education, as well as their first experiences as MST teachers in the workplace. A qualitative research design was applied and data was obtained through visual (photo collages and written stories, observation and interviews. Whilst all the teachers held negative attitudes towards Mathematics, this situation was turned around during their university training. The three teachers in early childhood education experienced their entrance to the profession as positive, due mainly to the support of colleagues in their application of innovative teaching methods. Two teachers in the foundation phase, however, experienced the opposite. The findings emphasise the complex processes in the moulding of a professional teacher identity and how teaching practices are influenced by these processes.

  3. 高精度的测距系统中的测相技术研究%Study on the phase difference measurement technology in high precision distance measurement system

    Institute of Scientific and Technical Information of China (English)

    屈八一; 周渭; 李珊珊; 王江安

    2012-01-01

    The high precision phase difference measurement technology is one of the key technologies in the system of measuring the distance between satellite to satellite or satellite to the ground with high precision quality. This paper studies the phase difference measurement technology based on a double frequency subtraction phase difference measurement technology and its applications in the above distance measurement system. Experimental results show that phase difference measurement technology has a resolution better than 10-6 and the distance deviation caused by the noise floor of the system itself is less than 77μm.%高精度的测相技术是星星间或星地间的测距系统中的关键技术之一.研究了基于双差频测相技术的高精度测相技术及其在上述高精度的测距系统中的应用.实验结果表明双差频测相技术具有10-6以上的测相分辨率及由系统本底噪声引起的测距误差小于7μm.

  4. 相位编码信号的综合旁瓣能量改善技术%The integrated sidelobe level improved technology for phase coded waveform

    Institute of Scientific and Technical Information of China (English)

    曾祥能; 张永顺; 何峰; 董臻

    2012-01-01

    The unsatisfactory integrated sidelobe energy performance limits the phase coded signal applied in the observation of extended targets.Based on the phase coded waveform with uniform sidelobe to reduce sidelobe energy,the mismatched filter technology is utilized to process echo for producing nearly uniform sidelobe.Moreover,the original transmitted signal components is extracted from the echo without any interference,the sidelobe canceller is constructed with the conjugate signal of itself but shifted by one bit.As a result of the sidelobe cancel and other preprocessing,the phase coded signal integrated sidelobe level ratio is improved remarkably,and also obtained advanced Doppler tolerance that similar to linear frequency modulated signal.The proposed method may make the phase coded waveform obtain widely radar apply such as observation space-to-ground.%相位编码信号的综合旁瓣性能不佳是制约其在分布式目标观测应用中的主要因素。根据相位编码信号的均匀旁瓣结构有利于抑制旁瓣能量的性质,采用失配滤波技术对接收回波处理,获得了基本均匀的旁瓣输出,进一步通过接收回波提取出原始发射信号分量,通过一位时移、取复共轭形成了旁瓣对消器,经过旁瓣对消处理后极大地改善了相位编码信号的积分旁瓣比指标值,并且获得了类似线性调频信号的多普勒容忍性,本方法将使得相位编码信号在雷达对地观测等方面获得很好的应用前景。

  5. High-Temperature-Turbine Technology Program: Phase II. Technology test and support studies. Design and development of the liquid-fueled high-temperature combustor for the Turbine Spool Technology Rig

    Energy Technology Data Exchange (ETDEWEB)

    None

    1981-06-01

    The concept selected by Curtiss-Wright for this DOE sponsored High Temperature Turbine Technology (HTTT) Program utilizes transpiration air-cooling of the turbine subsystem airfoils. With moderate quantities of cooling air, this method of cooling has been demonstrated to be effective in a 2600 to 3000/sup 0/F gas stream. Test results show that transpiration air-cooling also protects turbine components from the aggressive environment produced by the combustion of coal-derived fuels. A new single-stage, high work transpiration air-cooled turbine has been designed and fabricated for evaluation in a rotating test vehicle designated the Turbine Spool Technology Rig (TSTR). The design and development of the annular combustor for the TSTR are described. Some pertinent design characteristics of the combustor are: fuel, Jet A; inlet temperature, 525/sup 0/F; inlet pressure, 7.5 Atm; temperature rise, 2475/sup 0/F; efficiency, 98.5%; exit temperature pattern, 0.25; and exit mass flow, 92.7 pps. The development program was conducted on a 60/sup 0/ sector of the full-round annular combustor. Most design goals were achieved, with the exception of the peak gas exit temperature and local metal temperatures at the rear of the inner liner, both of which were higher than the design values. Subsequent turbine vane cascade testing established the need to reduce both the peak gas temperature (for optimum vane cooling) and the inner liner metal temperature (for combustor durability). Further development of the 60/sup 0/ combustor sector achieved the required temperature reductions and the final configuration was incorporated in the TSTR full-annular burner.

  6. System technology analysis of aeroassisted orbital transfer vehicles: Moderate lift/drag (0.75-1.5). Volume 3: Cost estimates and work breakdown structure/dictionary, phase 1 and 2

    Science.gov (United States)

    1985-01-01

    Technology payoffs of representative ground based (Phase 1) and space based (Phase 2) mid lift/drag ratio aeroassisted orbit transfer vehicles (AOTV) were assessed and prioritized. A narrative summary of the cost estimates and work breakdown structure/dictionary for both study phases is presented. Costs were estimated using the Grumman Space Programs Algorithm for Cost Estimating (SPACE) computer program and results are given for four AOTV configurations. The work breakdown structure follows the standard of the joint government/industry Space Systems Cost Analysis Group (SSCAG). A table is provided which shows cost estimates for each work breakdown structure element.

  7. Fiscal Year 2009 Phased Construction Completion Report for EU Z2-36 in Zone 2, East Tennessee Technology Park, Oak Ridge, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Bechtel Jacobs

    2009-02-10

    The purpose of this Phased Construction Completion Report (PCCR) is to present fiscal year (FY) 2009 results of Dynamic Verification Strategy (DVS) characterization activities for exposure unit (EU) Z2-36 in Zone 2 at the East Tennessee technology Park (ETTP). The ETTP is located in the northwest corner of the US Department of Energy (DOE) Oak Ridge Reservation in Oak Ridge, Tennessee and encompasses approximately 5000 acres that have been subdivided into three zones--Zone 1 ({approx} 1400 acres), Zone 2 ({approx} 800 acres), and the Boundary Area ({approx} 2800 acres). Zone 2 comprises the highly industrial portion of ETTP and consists of all formerly secured areas of the facility, including the large processing buildings and direct support facilities; experimental laboratories and chemical and materials handling facilities; materials storage and waste disposal facilities; secure document records libraries; and shipping and receiving warehouses. The Record of Decision for Soil, Buried Waste, and Subsurface Structure Actions in Zone 2, East Tennessee Technology Park, Oak Ridge, Tennessee (DOE 2005) (Zone 2 ROD) specifies the future end use for Zone 2 acreage as uncontrolled industrial for the upper 10 ft of soils. Characterization activities in these areas were conducted in compliance with the Zone 2 ROD and the DVS and data quality objectives (DQOs) presented in the Main Plant Group DQO Scoping Package (July 2006) and the Remedial Design Report/Remedial Action Work Plan for Zone 2 Soils, Slabs, and Subsurface Structures, East Tennessee Technology Park, Oak Ridge, Tennessee (DOE 2007a) (Zone 2 RDR/RAWP). The purpose of this PCCR is to address the following: (1) Document EU Z2-36 DVS characterization results; (2) Describe and document the risk evaluation and determine if the EU meets the Zone 2 ROD requirements for unrestricted industrial use to 10 ft bgs, and (3) Identify additional areas not defined in the Zone 2 ROD that require remediation based on the DVS

  8. Equilibrium phase experimental determination of petroleum + gas systems at supercritical condition using ultrasonic technology; Estudo experimental do equilibrio de fases de sistemas de fracoes de petroleo e gases em condicoes supercriticas utilizando tecnicas de ultra-som: aparato experimental

    Energy Technology Data Exchange (ETDEWEB)

    Mehl, Ana; Pessoa, Fernando L.P.; Silva, Silvia M.C. da [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola de Quimica; Feiteira, Jose F. [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Escola de Engenharia

    2008-07-01

    In separation process of multicomponent systems based on phase equilibrium is essential know the phase behavior and the critical points of the system for determination and optimization of the operational conditions. The experimental apparatus presents the challenge of determine the equilibrium phase dates of a system composed by petroleum residua and supercritical solvent. The used method, named acoustic method, allows the composition identification of the phases in equilibrium also in cloudy systems as they are the systems formed by residues of crude oil. For this reason, the acoustic methodology, based on the ultra-sound technology will be used in the study of the phase equilibrium and experimental characterization of the system, in benches scale, operating in severe conditions of temperature and pressure.The acoustic method is one not invasive and not subjective technique, what becomes the work in high pressures safer. (author)

  9. TASK TECHNICAL AND QUALITY ASSURANCE PLAN FOR OUT-OF-TANK DESTRUCTION OF TETRAPHENYLBORATE VIA WET AIR OXIDATION TECHNOLOGY: PHASE I - BENCH SCALE TESTS

    Energy Technology Data Exchange (ETDEWEB)

    Adu-Wusu, K

    2006-03-31

    Tank 48H return to service is critical to the processing of high level waste (HLW) at Savannah River Site (SRS). Liquid Waste Disposition (LWD) management has the goal of returning Tank 48H to routine service by January 2010 or as soon as practical. Tank 48H currently holds legacy material containing organic tetraphenylborate (TPB) compounds from the operation of the In-Tank Precipitation process. This material is not compatible with the waste treatment facilities at SRS and must be removed or undergo treatment to destroy the organic compounds before the tank can be returned to Tank Farm service. Tank 48H currently contains {approx}240,000 gallons of alkaline slurry with about 2 wt % potassium and cesium tetraphenylborate (KTPB and CsTPB). The main radioactive component in Tank 48H is {sup 137}Cs. The waste also contains {approx}0.15 wt % Monosodium Titanate (MST) which has adsorbed {sup 90}Sr, U, and Pu isotopes. A System Engineering Evaluation of technologies/ideas for the treatment of TPB identified Wet Air Oxidation (WAO) as a leading alternative technology to the baseline aggregation approach. Over 75 technologies/ideas were evaluated overall. Forty-one technologies/ideas passed the initial screening evaluation. The 41 technologies/ideas were then combined to 16 complete solutions for the disposition of TPB and evaluated in detail. Wet Air Oxidation (WAO) is an aqueous phase process in which soluble or suspended waste components are oxidized using molecular oxygen contained in air. The process operates at elevated temperatures and pressures ranging from 150 to 320 C and 7 to 210 atmospheres, respectively. The products of the reaction are CO{sub 2}, H{sub 2}O, and low molecular weight oxygenated organics (e.g. acetate, oxalate). The basic flow scheme for a typical WAO system is as follows. The waste solution or slurry is pumped through a high-pressure feed pump. An air stream containing sufficient oxygen to meet the oxygen requirements of the waste stream is

  10. Phased Construction Completion Report for Building K-1401 of the Remaining Facilities Demolition Project at the East Tennessee Technology Park Oak Ridge, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Garland S.

    2008-03-01

    This Phased Construction Completion Report documents the demolition of Bldg. K-1401, Maintenance Building, addressed in the Action Memorandum for the Remaining Facilities Demolition Project at East Tennessee Technology Park, Oak Ridge, Tennessee (DOE 2003a) as a Comprehensive Environmental Response, Compensation, and Liability Act of 1980 non-time-critical removal action. The objectives of the removal action (DOE 2003a) - to eliminate the source of potential contamination, to eliminate the threat of potential future releases, and/or to eliminate the threats to the general public and the environment - were met. The end state of this action is for the slab to remain with all penetrations sealed and grouted or backfilled. The basement and pits remain open. There is residual radiological and polychlorinated biphenyl contamination on the slab and basement. A fixative was applied to the area on the pad contaminated with polychlorinated biphenyls. Interim land-use controls will be maintained until final remediation decisions are made under the Zone 2 Record of Decision (DOE 2005a).

  11. Phased Construction Completion Report for Bldg. K-1401 of the Remaining Facilities Demolition Project at the East Tennessee Technology Park, Oak Ridge, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Bechtel Jacobs

    2008-10-01

    This Phased Construction Completion Report documents the demolition of Bldg. K-1401, Maintenance Building, addressed in the Action Memorandum for the Remaining Facilities Demolition Project at East Tennessee Technology Park, Oak Ridge, Tennessee (DOE 2003a) as a Comprehensive Environmental Response, Compensation, and Liability Act of 1980 non-time-critical removal action. The objectives of the removal action (DOE 2003a) - to eliminate the source of potential contamination, to eliminate the threat of potential future releases, and/or to eliminate the threats to the general public and the environment - were met. The end state of this action is for the slab to remain with all penetrations sealed and grouted or backfilled. The basement and pits remain open. There is residual radiological and polychlorinated biphenyl contamination on the slab and basement. A fixative was applied to the area on the pad contaminated with polychlorinated biphenyls. Interim land-use controls will be maintained until final remediation decisions are made under the Zone 2 Record of Decision (DOE 2005a).

  12. Bond and electron beam welding quality control of the aluminum stabilized and reinforced CMS conductor by means of ultrasonic phased-array technology

    CERN Document Server

    Neuenschwander, J; Horváth, I L; Luthi, T; Marti, H

    2002-01-01

    The Compact Muon Solenoid (CMS) is one of the general-purpose detectors to be provided for the LHC project at CERN. The design field of the CMS superconducting magnet is 4 T, the magnetic length is 12.5 m and the free bore is 6 m. The coils for CNIS are wound of aluminum-stabilized Rutherford type superconductors reinforced with high-strength aluminum alloy. For optimum performance of the conductor a void-free metallic bonding between the high-purity aluminum and the Rutherford type cable as well as between the electron beam welded reinforcement and the high-purity aluminum must be guaranteed. It is the main task of this development work to assess continuously the bond quality over the whole width and the total length of the conductors during manufacture. To achieve this goal we use the ultrasonic phased-array technology. The application of multi- element transducers allows an electronic scanning perpendicular to the direction of production. Such a testing is sufficiently fast in order to allow a continuous a...

  13. A Microfabricated Segmented-Involute-Foil Regenerator for Enhancing Reliability and Performance of Stirling Engines. Phase III Final Report for the Radioisotope Power Conversion Technology NRA

    Science.gov (United States)

    Ibrahim, Mounir B.; Gedeon, David; Wood, Gary; McLean, Jeffrey

    2009-01-01

    Under Phase III of NASA Research Announcement contract NAS3-03124, a prototype nickel segmented-involute-foil regenerator was microfabricated and tested in a Sunpower Frequency-Test-Bed (FTB) Stirling convertor. The team for this effort consisted of Cleveland State University, Gedeon Associates, Sunpower Inc. and International Mezzo Technologies. Testing in the FTB convertor produced about the same efficiency as testing with the original random-fiber regenerator. But the high thermal conductivity of the prototype nickel regenerator was responsible for a significant performance degradation. An efficiency improvement (by a 1.04 factor, according to computer predictions) could have been achieved if the regenerator was made from a low-conductivity material. Also, the FTB convertor was not reoptimized to take full advantage of the microfabricated regenerator s low flow resistance; thus, the efficiency would likely have been even higher had the FTB been completely reoptimized. This report discusses the regenerator microfabrication process, testing of the regenerator in the Stirling FTB convertor, and the supporting analysis. Results of the pre-test computational fluid dynamics (CFD) modeling of the effects of the regenerator-test-configuration diffusers (located at each end of the regenerator) are included. The report also includes recommendations for further development of involute-foil regenerators from a higher-temperature material than nickel.

  14. Technology Support for High-Throughput Processing of Thin-Film CdTe PV Modules Annual Technical Report, Phase II

    Energy Technology Data Exchange (ETDEWEB)

    Rose, D.H.; Powell, R.C.; Karpov, V.; Grecu, D.; Jayamaha, U.; Dorer, G.L. (First Solar, L.L.C.)

    2001-02-05

    Results and conclusions from Phase II of a three-year subcontract are presented. The subcontract, entitled Technology Support for High-Throughput Processing of Thin-Film CdTe PV Modules, is First Solar's portion of the Thin-Film Photovoltaic Partnership Program. The research effort of this subcontract is divided into four areas of effort: (1) process and equipment development, (2) efficiency improvement, (3) characterization and analysis, and (4) environmental, health, and safety. As part of the process and equipment development effort, a new semiconductor deposition system with a throughput of 3 m2/min was completed, and a production line in a new 75,000 ft2 facility was started and is near completion. As part of the efficiency-improvement task, research was done on cells and modules with thin CdS and buffer layers as way to increase photocurrent with no loss in the other photovoltaic characteristics. A number of activities were part of the characterization and analysis task, including developing a new admittance spectroscopy system, with a range of 0.001 Hz to 100 kHz, to characterize cells. As part of the environmental, health, and safety task, the methanol-based CdCl2 process was replaced with aqueous-CdCl2. This change enabled the retention of a De Minimus level of emissions for the manufacturing plant, so no permitting is required.

  15. Research on liquid-phase micro-extraction technology in pharmaceutical analysis%药物分析中的液相微萃取技术研究

    Institute of Scientific and Technical Information of China (English)

    郑艳燕

    2016-01-01

    液相微萃取技术(LPME)是将采样、富集和纯化融为一体,它有效降低了传统液-液萃取时有机溶液的应用量。有模式多样灵活、富集效率高、环境友好、操作简单的优点。为了在药物分析中充分发挥该技术的作用,通过对相关内容进行分析与论述,为有关单位及工作人员在实际工作中提供帮助。%Liquid-phase micro-extraction (LPME) integrates sampling, enrichment and purification, which effectively reduces the application amount of organic solution extracted from traditional liquid. It has advantages of flexible model, high enrichment efficiency, friendly environment and simple operation. To fully play its role this technology in pharmaceutical analysis, this paper made analysis and discussion on relevant content, hoping to provide help for relevant units and staff in practical work.

  16. The mineral phase evolution behaviour in the production of glass-ceramics from municipal solid waste incineration fly ash by melting technology.

    Science.gov (United States)

    Luan, Jingde; Chai, Meiyun; Li, Rundong; Yao, Pengfei; Khan, Agha Saood

    2016-01-01

    High energy consumption was the major obstacle to the widespread application of melting technology in the treatment of municipal solid waste incineration fly ash. Aiming to lower the ash-melting temperature (AMT) for energy-saving, differential scanning calorimetry, X-ray diffraction and the scanning electron microscope were used to investigate the relations between AMT and the mineral evolution. The results indicated that the change of AMT was determined by the types and the contents of mineral crystals. The transition from refractory minerals to fluxing minerals was the key. The transition of the main crystalline phase from pseudowollastonite (Ca3(Si3O9)) to wollastonite (CaSiO3) played a significant role in AMT reduction. A quantum chemistry calculation was carried out to investigate the effect of crystal reaction activity on AMT. In the chemical reaction, the highest occupied molecular orbital and the lowest unoccupied molecular orbital played a more important role than any other orbits. Cations (Ca(2+), Mg(2+), Na(+), K(+)) were apt to enter into the crystal lattice of wollastonite and gehlenite mainly through Si (3), O (1), Si (6), O (10) and Al (2), O (10), and broke the covalent bonds of Si (3)-O (7), Al (1)-O (9) and Al (1)-O (15), respectively. This deconstruction behaviour provided convenient conditions for restructuring and promoted the formation of fluxing minerals. In melts, the excess SiO2 monomers which existed in the form of cristobalite and quartz caused AMT increase.

  17. Fiscal Year 2008 Phased Construction Completion Report for EU Z2-33 in Zone 2, East Tennessee Technology Park, Oak Ridge, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Bechtel Jacobs

    2008-09-11

    The Record of Decision for Soil, Buried Waste, and Subsurface Structure Actions in Zone 2, East Tennessee Technology Park, Oak Ridge, Tennessee (DOE/OR/01-2161&D2) (Zone 2 ROD) acknowledged that most of the 800 acres in Zone 2 were contaminated, but that sufficient data to confirm the levels of contamination were lacking. The Zone 2 ROD further specified that a sampling strategy for filling the data gaps would be developed. The Remedial Design Report/Remedial Action Work Plan for Zone 2 Soils, Slabs, and Subsurface Structures, East Tennessee Technology Park, Oak Ridge, Tennessee (DOE/OR/01-2224&D3) (Zone 2 RDR/RAWP) defined the sampling strategy as the Dynamic Verification Strategy (DVS), generally following the approach used for characterization of the Zone 1 exposure units (EUs). The Zone 2 ROD divided the Zone 2 area into seven geographic areas and 44 EUs. To facilitate the data quality objectives (DQOs) of the DVS process, the Zone 2 RDR/RAWP regrouped the 44 EUs into 12 DQO scoping EU groups. These groups facilitated the DQO process by placing similar facilities and their support facilities together and allowing identification of data gaps. The EU groups were no longer pertinent after DQO planning was completed and characterization was conducted as areas became accessible. As the opportunity to complete characterization became available, the planned DVS program and remedial actions (RAs) were completed for EU Z2-33. Remedial action was also performed at two additional areas in adjacent EU Z2-42 because of their close proximity and similar nature to a small surface soil RA in EU Z2-33. Remedial actions for building slabs performed in EU Z2-33 during fiscal year (FY) 2007 were reported in the Fiscal Year 2007 Phased Construction Completion Report for the Zone 2 Soils, Slabs, and Subsurface Structures at East Tennessee Technology Park, Oak Ridge, Tennessee (DOE/OR/01-2723&D1). Recommended RAs for EU Z2-42 were described in the Fiscal Year 2006 Phased Construction

  18. Photovoltaic manufacturing technology, Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    Izu, M. (Energy Conversion Devices, Inc., Troy, MI (United States))

    1992-03-01

    This report examines manufacturing multiple-band-gap, multiple- junction solar cells and photovoltaic modules. Amorphous silicon alloy material is deposited (using microwave plasma-assisted chemical vapor deposition) on a stainless-steel substrate using a roll-to-roll process that is continuous and automated. Rapid thermal equilibration of the metal substrate allows rapid throughput of large-area devices in smaller production machines. Potential improvements in the design, deposition, and module fabrication process are described. Problems are also discussed that could impede using these potential improvements. Energy Conversion Devices, Inc. (ECD) proposes cost and time estimates for investigating and solving these problems. Manufacturing modules for less than $1.00 per peak watt and stable module efficiencies of greater than 10% are near-term goals proposed by ECD. 18 refs.

  19. Polarization Imager Technology. Phase I

    Science.gov (United States)

    2007-11-02

    of Figure 5 shows an inten- sity image of a HMMWV entirely draped with U.S. Woodland Net Camouflage and about 30% occluded by bush vegetation on the...onto the CCD photosensing chip such that the three 00, 450, 900 states are sensed simultaneously. Figure 8 10 COMPETITION SENSITIVE AND PROPRIETARY...respectively at adjacent single columns of pixels, is deposited onto the CCD chip . The sensing rate of complete polarization images using this design is

  20. 基于效率与方向的军事技术发展的阶段划分%Division of Military Technology, Development Phases Based on Efficiency and Direction

    Institute of Scientific and Technical Information of China (English)

    李婷婷; 盖立阁; 朱亚宗

    2012-01-01

    技术决策在军事技术发展的过程中具有特殊的地位,这使一般技术发展阶段的划分理论应用于军事技术上有不合适之处。立足于军事技术的特殊性,本文指出军事技术发展具有效率与方向两个不同的维度,在此基础上把军事技术的发展分为军事技术原型形成、军事技术决策和军事装备生产三个阶段,并指出了新分法的意义及其应用范围。%Decision-maiking has a peculiar significance in the development of military technology, which makes the phases division theories of common technology development cannot be adopted to military technology. Based on the particularities of military technology, this paper points out that the development of military technology has two different dimensions, efficiency and direction. Based on that, the development of mili- tary technology are divided into three phases, i. e. , forming, deeision-maiking, and producing. Finally, the sense of the new division theory and its limitation are presented.

  1. 微胶囊相变材料制备技术的研究进展%Progress in Study on the Preparation Technology of Microencapsulated Phase Change Material

    Institute of Scientific and Technical Information of China (English)

    王刚; 秦立翠; 姜艳

    2012-01-01

    Microencapsulated phase change materials (MEPCM) is a kind of composite material with core-shell structure constructed by coating a polymer layer with stable performance on the surface of solid-liquid phase change material by microencapsulation technology. The classification of phase change materials, working principle of microencapsulated phase change material is presented, and several preparation methods for microcapsule are introduced emphatically, including the interfacial polymerization, in-situ polymerization, complex coacervation method, solvent evaporation method and condensed phase separation method. The development trend of microencapsulation technology is proposed.%微胶囊相变材料( Microencapsulated Phase Change Material,MEPCM)是应用微胶囊技术在固液相变材料表面包覆一层性能稳定的高分子膜,而构成的具有核壳结构的复合材料.系统地讲述了相变材料的分类,微胶囊相变材料的工作原理,并重点介绍了几种微胶囊的制备方法,包括界面聚合法、原位聚合法、复凝聚法、溶剂挥发法、凝聚相分离法等,并提出了微胶囊技术今后的发展方向.

  2. Application of Phase Lock Loop in Superconducting RF Technology%锁相环在超导射频技术中的应用

    Institute of Scientific and Technical Information of China (English)

    常玮; 何源; 李春龙; 高郑; 朱正龙; 薛纵横; 宋玉; 张锐

    2014-01-01

    利用压控振荡器锁相环路(VCO-PLL)锁定超导射频谐振腔体的本征频率,使腔体稳定谐振。在原理验证阶段,利用NI-Labview对实验原理做了仿真。得到的仿真结果显示,环路增益选取的不同会直接影响整个系统的锁定状态。在实验测试阶段,根据原理和仿真结果搭建了相应的实验平台,从而得到环路锁定的测试结果。最后在低温超导态测试阶段,用经过验证的实验平台对IMP-HWR010超导腔体进行了频率锁定测试,并得到了腔体频率随氦压变化的实际测量结果,df/dp约为0.73 Hz/Pa。%The main issue of this paper is to introduce the application of phase lock loop (PLL) in supercon-ducting RF technology. The voltage-controlled oscillator phase lock loop (VCO-PLL) can be used for locking the eigen frequency of the superconducting cavity. It can keep superconducting cavity resonant stably. In this paper, the principle of the cavity locking by the VCO-PLL is verified by a simulation, which is done by using NI-Labview software. The simulation result shows that the different gain of the PLL system can impact the locking situation of the whole system. In the test stage, the locking test plant is set up and passed validation. Finally, at the low temperature test stage, the frequency of the IMP-HWR010 superconducting cavity is locked by the test plant. The frequency change with helium pressure of the cavity is about 0.73 Hz/Pa.

  3. The Study of the Liquid Phase Micro-extraction Technology in the Pre-treatment of Geological Samples%液相微萃取技术在地质样品前处理中的研究

    Institute of Scientific and Technical Information of China (English)

    卢文文; 黄国林; 金超

    2012-01-01

    文章论述了地质样品的前处理技术,重点评述了近年在分析化学领域发展较快的液相微萃取技术。该技术富集倍数高、有机溶剂用量非常少,是一种环境友好的样品前处理新技术。%The paper discussed the pre-treatment technology used in geological samples, and focus were reviewed the faster development of liquid phase micro-extraction technology in the field of analytical chemistry in recent years. There is the high enrichment factor in this technology and the organic solvent is very small, it is a new pre-treatment technology that is friendly to the environment.

  4. Fiscal Year 2007 Phased Construction Completion Report for the Zone 2 Soils, Slabs, and Subsurface Structures at East Tennessee Technology Park, Oak Ridge, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    RSI

    2008-03-01

    The purpose of this Phased Construction Completion Report (PCCR) is to present the fiscal year (FY) 2007 results of characterization activities and recommended remedial actions (RAs) for 11 exposure units (EUs) in Zone 2 (Z2-01, Z2-03, Z2-08, Z2-23, Z2-24, Z2-28, Z2-34, Z2-37, Z2-41, Z2-43, and Z2-44) at the East Tennessee Technology Park (ETTP), which is located in the northwest corner of the U.S. Department of Energy (DOE) Oak Ridge Reservation in Oak Ridge, Tennessee (Fig. 1). ETTP encompasses a total land area of approximately 5000 acres that has been subdivided into three zones--Zone 1 ({approx}1400 acres), Zone 2 ({approx}800 acres), and the Boundary Area ({approx}2800 acres). Zone 2, which encompasses the highly industrialized portion of ETTP shown in Fig. 1, consists of all formerly secured areas of the facility, including the large processing buildings and direct support facilities; experimental laboratories and chemical and materials handling facilities; materials storage and waste disposal facilities; secure document records libraries; and shipping and receiving warehouses. The Zone 2 Record of Decision for Soil, Buried Waste, and Subsurface Structure Actions in Zone 2, East Tennessee Technology Park, Oak Ridge, Tennessee (DOE 2005) (Zone 2 ROD) specifies the future end use for Zone 2 acreage as uncontrolled industrial for the upper 10 ft of soils. Characterization activities in these areas were conducted in compliance with the Zone 2 ROD and the Dynamic Verification Strategy (DVS) and data quality objectives (DQOs) presented in the Remedial Design Report/Remedial Action Work Plan for Zone 2 Soils, Slabs, and Subsurface Structures, East Tennessee Technology Park, Oak Ridge, Tennessee (DOE 2007) (Zone 2 RDR/RAWP). The purpose of this PCCR is to address the following: (1) Document DVS characterization results for the accessible EUs in FY 2007; (2) Describe and document the risk evaluation for each EU, and determine if the EU met the Zone 2 ROD requirements

  5. 时域反相对称与扩频技术的混合技术研究%Hybrid Technology of Time Domain Phase Inversion Symmetric Modulation and Spread Spectrum System

    Institute of Scientific and Technical Information of China (English)

    薛青娜; 校江超

    2011-01-01

    In order to achieve the phase-inversion symmetric and spread spectrum communication, according to the relativity of noise in time domain and the anti-noise theory of time domain phase-inversions hybrid structure of time domain phase-inversion symmetric and spread spectrum is proposed. The simulation and experimental results show that time domain phase-inversion symmetric and spread spectrum system can get higher output SNR and under the same transmission conditions, the phase-inversion symmetric spread spectrum technology is superior to the general spread spectrum technology. This method can find a wide use in mobile communications.%为了实现反相对称扩频通讯技术,根据噪声在时域上的相关性以及反相对称法的抗噪原理,将反相对称法与扩频通信相结合实现了一种新的扩频通信方法.仿真结果表明:时域反相对称扩频技术系统能获得较高的输出信噪比,且在相同的传输条件下,反相对称扩频技术的性能优于一般的扩频技术,该通信方法可以在移动通讯中推广应用.

  6. 时域反相对称与扩频技术的混合技术研究%Hybrid Technology of Time Domain Phase-inversion Symmetry and Spread Spectrum

    Institute of Scientific and Technical Information of China (English)

    冯德武; 谭旭

    2011-01-01

    According to the relativity of noise in time domain and the antinoise principle of time domain phase-inversion symme-tric method, a novel spread spectrum communication method is proposed in combination with phase-inversion symmetric method and spread spectrum communication. The simulation and experimental verification indicate that the time domain phase-inversion symmetric and spread spectrum system can get higher output SNR, and under the same transmission conditions, capability of phase-inversion symmetric spread spectrum technology is superior to the general spread spectrum technology.%根据噪声在时域上的相关性以及反相对称法的抗噪原理,将反相对称法与扩频通信相结合,提出了一种新的扩频通信方法.通过仿真和实验验证表明,时域反相对称扩频技术能使系统获得较高的输出信噪比,且在相同的传输条件下,反相对称扩频技术的性能优于一般的扩频技术.

  7. GRACE BIOREMEDIATION TECHNOLOGIES - DARAMEND™ BIOREMEDIATION TECHNOLOGY. INNOVATIVE TECHNOLOGY EVALUATION REPORT

    Science.gov (United States)

    Grace Dearborn's DARAMEND™ Bioremediation Technology was developed to treat soils/sediment contaminated with organic contaminants using solid-phase organic amendments. The amendments increase the soil’s ability to supply biologically available water/nutrients to micro...

  8. Progress in ferrite phase shifters

    Science.gov (United States)

    Boyd, C. R., Jr.

    1983-10-01

    Advances in the technology of reciprocal ferrite phase shifters are outlined. Nonlatching rotary-field phase shifters have been produced with enhanced phase accuracy and modest control power. A significant quantity of dual-mode latching units has been built at 35 GHz, with good results. Both types of phase shifter can be adapted to perform other functions in addition to phase shifting. Examples of phase shifters that perform duplexing and polarization switching functions are given.

  9. Influence of main process variables on the treatment of waste waters using a new technology Mixer-Settler based on Phase Inversion (MSPI)

    Energy Technology Data Exchange (ETDEWEB)

    Moraes, N.A.; Paulo, J.B.A.; Medeiros, G.S. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Engenharia Quimica], e-mail: norberto@eq.ufrn.br

    2011-04-15

    The prototype of a device on a semi-industrial scale to treat wastewaters from the oil industry has been widely studied as a viable alternative to conventional equipment. The device, called Mixer-Settler based on Phase Inversion (MSPI), uses the phase inversion method as operating principle. Using experimental planning (2{sup 4} factorial with four repetitions in the central point), it was determined the influence of the main variables on the oil/water separation process for waters containing between 30 and 100 mg of oil per liter of water. The following variables were evaluated: specific throughput, organic/aqueous phase ratio, agitation in the mixing chamber, and coconut oil concentration. The response variable was the oil/water separation efficiency. The results show that the separation efficiency of the device is a function of the effective throughput and the organic/aqueous phase ratio. (author)

  10. Fiscal Year 2010 Phased Construction Completion Report for EU Z2-32 in Zone 2, East Tennessee Technology Park, Oak Ridge, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Bechtel Jacobs

    2010-02-01

    The Record of Decision for Soil, Buried Waste, and Subsurface Structure Actions in Zone 2, East Tennessee Technology Park, Oak Ridge, Tennessee (DOEIORJO 1-2161 &D2) (Zone 2 ROD) acknowledged that most of the 800 acres in Zone 2 were contaminated, but that sufficient data to confirm the levels of contamination were lacking. The Zone 2 ROD further specified that a sampling strategy for filling the data gaps would be developed. The Remedial Design Report/Remedial Action Work Plan for Zone 2 Soils, Slabs, and Subsurface Structures, East Tennessee Technology Park, Oak Ridge, Tennessee (DOEIORIO 1 -2224&D3) (RDRJRAWP) defined the sampling strategy as the Dynamic Verification Strategy (DVS), generally following the approach used for characterization of the Zone I exposure units (EUs). The Zone 2 ROD divided the Zone 2 area into seven geographic areas and 44 EUs. To facilitate the data quality objectives (DQOs) of the DVS process, the RDR/RAWP regrouped the 44 EUs into 12 DQO scoping EU groups. These groups facilitated the DQO process by placing similar facilities and their support facilities together, which allowed identification of data gaps. The EU groups were no longer pertinent after DQO planning was completed and characterization was conducted as areas became accessible. As the opportunity to complete characterization became available, the planned DVS program was completed for the EU addressed in this document (EU Z2-32). The purpose of this Phased Construction Completion Report (PCCR) is to address the following: (1) Document DVS characterization results for EU Z2-32. (2) Describe and document the risk evaluation and determine if the EU meets the Zone 2 ROD requirements for unrestricted industrial use to 10 ft bgs. (3) Identify additional areas not defined in the Zone 2 ROD that require remediation based on the DVS evaluation results. (4) Describe the remedial action performed in the K-1066-G Yard in EU Z2-32. Approximately 18.4 acres are included in the EU

  11. The Key Technology of Data Transmission in an Ultrasonic Phased Array System%超声相控阵系统数据传输的关键技术

    Institute of Scientific and Technical Information of China (English)

    施成龙; 师芳芳; 张碧星

    2016-01-01

    Ultrasonic phased array technology has a high sensitivity,resolution and signal to noise ratio,which makes it a hot research field of nondestructive testing.To improve the detection speed of ultrasonic phased array system,the key part of data transfer in ultrasonic phased array system is studied.The structure of self-developed ultrasonic phased array system is introduced.Three factors which include data bus,hardware driver and data reading program that determine the data transfer rate of system are described.To develop the system,PCI bus is chosen to be the data bus,DriverStudio is used to develop the PCI bus driver,and multi-core technology is applied to improve the efficiency of the data reading program.Experimental results show that using PCI bus technology and multi-core programming technology to develop the data transfer module of the ultrasonic phased array system can increase the data transfer rate speed of the system.%超声相控阵检测技术有着较高的灵敏度、分辨率和信噪比,是目前无损检测领域的热点。为了提高超声相控阵检测速度,对于超声相控阵系统数据传输的关键技术进行了探讨。介绍了自行开发的超声相控阵系统结构,对决定超声相控阵系统数据传输速度的三个因素:数据总线、硬件驱动、数据读取程序进行了说明与分析。选择高速数据传输总线 PCI 总线为数据总线,使用DriverStudio 开发高效的 PCI 总线驱动,并采用多核多线程技术提高数据读取程序的效率。试验表明,采用 PCI 总线技术和多核编程开发超声相控阵系统数据传输模块,能提高系统数据传输速度,从而提高检测速度。

  12. Phases and Phase Transitions

    Science.gov (United States)

    Gitterman, Moshe

    2014-09-01

    In discussing phase transitions, the first thing that we have to do is to define a phase. This is a concept from thermodynamics and statistical mechanics, where a phase is defined as a homogeneous system. As a simple example, let us consider instant coffee. This consists of coffee powder dissolved in water, and after stirring it we have a homogeneous mixture, i.e., a single phase. If we add to a cup of coffee a spoonful of sugar and stir it well, we still have a single phase -- sweet coffee. However, if we add ten spoonfuls of sugar, then the contents of the cup will no longer be homogeneous, but rather a mixture of two homogeneous systems or phases, sweet liquid coffee on top and coffee-flavored wet sugar at the bottom...

  13. Research on 1 kW Single-Phase Photovoltaic Grid-Connected Phase-Locked Technology Based on DSP%基于DSP的1 kW单相光伏并网锁相技术的研究

    Institute of Scientific and Technical Information of China (English)

    许军; 郑绍陆; 唐传鋆; 耿力

    2014-01-01

    As to the problem,PV( Photo-Voltage) grid-connected distributed power supply system's phase locking, this paper proposes a photovoltaic grid-connected system's digital phase-locked algorithm and program flow design based on DSP. According to the relationship between the period and phase of the cycle of adjustment,the control cycle and phase locking are realized. By this method,conveniently the grid voltage and PV power generation output current signal and the objectives of signal capture and phase-locked are realized. Finally,implement of the prototype and the experimental results proved that the method is accurate. The design ensures PLL method accuracy,reliability and practicability of the PV grid-connected system.%针对光伏分布式电源并网系统锁相技术的问题,采用了一种基于DSP的光伏并网系统的数字锁相算法和程序流程设计,根据周期和相位的关系,通过调整周期来实现周期和相位的控制和锁定,方便地实现了对电网电压和光伏发电输出电流信号捕获和锁相的目的。最后制作样机并通过实验证明,该锁相方法设计准确,锁相精度高,保证了光伏并网系统的可靠性和实用性。

  14. Gymnastics in Phase Space

    Energy Technology Data Exchange (ETDEWEB)

    Chao, Alexander Wu; /SLAC

    2012-03-01

    As accelerator technology advances, the requirements on accelerator beam quality become increasingly demanding. Facing these new demands, the topic of phase space gymnastics is becoming a new focus of accelerator physics R&D. In a phase space gymnastics, the beam's phase space distribution is manipulated and precision tailored to meet the required beam qualities. On the other hand, all realization of such gymnastics will have to obey accelerator physics principles as well as technological limitations. Recent examples of phase space gymnastics include Emittance exchanges, Phase space exchanges, Emittance partitioning, Seeded FELs and Microbunched beams. The emittance related topics of this list are reviewed in this report. The accelerator physics basis, the optics design principles that provide these phase space manipulations, and the possible applications of these gymnastics, are discussed. This fascinating new field promises to be a powerful tool of the future.

  15. Particle- and gas-phase PAHs toxicity equivalency quantity emitted by a non-road diesel engine with non-thermal plasma technology.

    Science.gov (United States)

    Gao, Jianbing; Ma, Chaochen; Xing, Shikai; Zhang, Yajie; Liu, Jiangquan; Feng, Hao

    2016-10-01

    Polycyclic aromatic hydrocarbon (PAH) toxicity equivalency quantity (TEQ, denoted by benzo(a)pyrene equivalent (BaPeq) concentration) is more meaningful when evaluating the influence of non-road diesel engines PAH toxicity on environment. Particle- and gas-phase PAH BaPeq concentrations were calculated based on gas chromatography-mass spectrometer (GC-MS) results and toxic equivalency factors. A non-thermal plasma (NTP) reactor was applied to a non-road diesel engine to decrease PAH TEQ content. Only the gas-phase Nap BaPeq concentration increased slightly with the action of NTP at three different generator power outputs. BaP dominated the BaPeq concentration for 15 samples with, and without NTP except in the gas-phase at 4 kW. Almost all medium molecular weight (MMW) and high molecular weight (HMW) PAH TEQs increased for particle- and gas-phases at 3 kW power output compared to 2 kW without the use of NTP. Particle-phase Nap, Acp, and AcPy (low molecular weight, LMW) TEQ were under detection at 3 and 4 kW, while gas-phase BkF, IND, DBA, and BghiP (HMW) concentrations were below the limits of detection. The most abundant PAH TEQ compounds were MMW and HMW PAHs for gas- and particle-phase while they were BaA, CHR, BbF, BaP, and IND for PM aggregation. The total BaPeq emission factors were 15.1, 141.4, and 46.5 μg m(-3) at three engine loads, respectively. Significant BaPeq concentration percentage reduction was obtained (more than 80 and 60 %) with the use of NTP for particle- and gas-phases. A high TEQ content was observed for PM aggregation (38.8, 98.4, and 50.0 μg kg(-1)) which may have caused secondary PAH toxicity emissions. With the action of NTP, the breakup of MMW and HMW into LMW PAHs led to reduction of some PAH concentrations.

  16. Ultrasonic Phased Array Technology Positioning Analysis of Butt Weld Surface Defect with Different Thickness%超声相控阵技术对不同厚度对接焊缝表层缺陷的定位

    Institute of Scientific and Technical Information of China (English)

    岳庚新; 王妍; 赵远

    2016-01-01

    简要介绍了常规超声波检测和超声相控阵检测的特点。以超声相控阵技术为研究对象,对不同厚度对接焊缝表层缺陷的定位进行了试验研究。验证结果表明,超声相控阵检测技术能够实现对不同厚度对接焊缝表层缺陷的精确定位,提高了工作效率。超声相控阵检测技术可实现A扫、 S扫等不同扫查方式的对比,使得对缺陷的判定更直观、更具有说服力,并且能够实现整个扫查过程全数据的存储,便于后期的处理和追溯。%In this article, it briefly introduced the characteristics of conventional ultrasonic testing and ultrasonic phased array technology. With ultrasonic phased array technology as the research object, the positioning of butt weld surface defect with different thickness was studied. The results showed that the ultrasonic phased array technology can realize accurate positioning for the butt weld surface defects with different thickness and improve working efficiency. It also can realize the comparison of different scanning modes, such as A mode, S mode and so on, make the determination of the scan results more intuitive and more persuasive, and can realize all data storage of whole scanning process, convenient for later processing and traceability.

  17. SIXTH SENSE TECHNOLOGY

    OpenAIRE

    2014-01-01

    The aim of this thesis was to explain the development of the technology by describing current hot concept in its field. The thesis describes the trend of development and current phase of the technology. The trend was described by explaining the concept of sixth sense technology and the effort that have been applied for this technology. As the concept is new, finding the suitable material related to the subject matter was the challenge for this project. The objective was completed by condu...

  18. DEVELOPMENT OF REACTION-DRIVEN IONIC TRANSPORT MEMBRANES (ITMs) TECHNOLOGY: PHASE IV/BUDGET PERIOD 6 “Development of ITM Oxygen Technology for Integration in IGCC and Other Advanced Power Generation Systems”

    Energy Technology Data Exchange (ETDEWEB)

    David, Studer

    2012-03-01

    Air Products and Chemicals, along with development participants and in association with the U.S. Department of Energy, has made substantial progress in developing a novel air separation technology. Unlike conventional cryogenic processes, this method uses high-temperature ceramic membranes to produce high-purity oxygen. The membranes selectively transport oxygen ions with high flux and infinite theoretical selectivity. Reaction-driven ceramic membranes are fabricated from non-porous, multi-component metallic oxides, operate at temperatures typically over 700°C, and have exceptionally high oxygen flux and selectivity. Oxygen from low-pressure air permeates as oxygen ions through the ceramic membrane and is consumed through chemical reactions, thus creating a chemical driving force that pulls oxygen ions across the membrane at high rates. The oxygen reacts with a hydrocarbon fuel in a partial oxidation process to produce a hydrogen and carbon monoxide mixture – synthesis gas. This project expands the partial-oxidation scope of ITM technology beyond natural gas feed and investigates the potential for ITM reaction-driven technology to be used in conjunction with gasification and pyrolysis technologies to provide more economical routes for producing hydrogen and synthesis gas. This report presents an overview of the ITM reaction-driven development effort, including ceramic materials development, fabrication and testing of small-scale ceramic modules, ceramic modeling, and the investigation of gasifier integration schemes

  19. A Method for Channelized Receiver Based on Poly-phase Filter Technology%基于多相滤波原理的侦收机信道化方法

    Institute of Scientific and Technical Information of China (English)

    孙洋; 张传林; 陶孝锋

    2011-01-01

    文章研究了基于多相滤波原理的接收机信道化方法,与传统低通滤波信道化法相比,降低了计算复杂度,易于实时分析。%A method for channelized digital receiver based on poly-phase filter technology is investigated in the paper.Compared with traditional low-pass method,the proposed method can accomplish real-time signal processing with a lower computational complexity.

  20. Implementation factors affecting the large scale deployment of digital health and well-being technologies: a qualitative study of the initial phases of the 'Living-It-Up' programme

    OpenAIRE

    Agbakoba, Ruth; McGee-Lennon, Marilyn; Bouamrane, Matt-Mouley; Watson, Nicholas; Frances S Mair

    2016-01-01

    Little is known about the factors which facilitate or impede the large-scale deployment of health and well-being consumer technologies. The Living-It-Up project is a large-scale digital intervention led by NHS 24, aiming to transform health and well-being services delivery throughout Scotland. We conducted a qualitative study of the factors affecting the implementation and deployment of the Living-It-Up services. We collected a range of data during the initial phase of deployment, including s...

  1. Implementation factors affecting the large-scale deployment of digital health and well-being technologies: A qualitative study of the initial phases of the ‘Living-It-Up’ programme

    OpenAIRE

    Agbakoba, Ruth; McGee-Lennon, Marilyn; Bouamrane, Matt-Mouley; Watson, Nicholas; Frances S Mair

    2015-01-01

    Little is known about the factors which facilitate or impede the large-scale deployment of health and well-being consumer technologies. The Living-It-Up project is a large-scale digital intervention led by NHS 24, aiming to transform health and well-being services delivery throughout Scotland. We conducted a qualitative study of the factors affecting the implementation and deployment of the Living-It-Up services. We collected a range of data during the initial phase of deployment, including s...

  2. Joule II - Programme. Clean coal technology R & D. 2nd phase. Volume III. Atmospheric combustion of pulverized coal and coal based blends for power generation

    Energy Technology Data Exchange (ETDEWEB)

    Hein, K.R.G.; Minchener, A.J.; Pruschek, R.; Roberts, P.A. [eds.

    1998-12-31

    Topics covered in this Joule II clean coal technology publication include: coal preparation and blending; cocombustion of coal with biomass and wastes; flame modelling; NO{sub x} abatement by combustion control and staging; coal quality and NO{sub x} emissions; coal combustion properties; and fluidized bed combustion of coal. All papers have been abstracted separately.

  3. 低温相变贮能材料定形技术研究进展%Research Progress in Shape-Stabilizing Technology of Low Temperature Phase Change Materials for Energy Storage

    Institute of Scientific and Technical Information of China (English)

    张艳辉; 邓建国; 黄奕刚

    2011-01-01

    Low-temperature phase Change materials have been widely applied in the fields of energy conservation and thermal control. The synthesis, compound and shape-stabilizing technology of these materials keep developing and have been a highpoint of material researches. The methods and technologies of preparing shape-stabilized phase change materials are reviewed, and the progress of porous matrix adsorption method, polymer matrix eomposited method, micro-encapsulation technology and other shape-stabilizing technology are introduced in this paper. Three aspects are the focus of micro- encapsulation technology: in-situ polymerization, interfacial polymerization and coacervation. Additionally, the advantages and disadvantages on the preparation methods are analyzed. The prospective application and development in shape-stabilized PCMs were anticipated.%低温相变贮能材料广泛应用于节能和温控领域,其合成、复配及定形技术不断发展,已成为材料研究领域的热点之一。本文综述了低温相变材料的定形方法和技术,介绍了多孔基质吸附法、聚合物基复合法、微胶囊技术以及其它定形技术的国内外研究进展,重点介绍了原位聚合、界面聚合、凝聚法3种微胶囊技术。分析了各种制备方法的优缺点,并指出了制备低温定形相变材料中存在的问题及今后发展方向,最后展望了低温定形相变贮能材料的发展前景。

  4. 基于最大似然估计和DSP技术的相位补偿算法%Phase Compensation Algorithm Based on Maximum Likelihood Estimation and DSP Technology

    Institute of Scientific and Technical Information of China (English)

    铁维昊; 王文利; 路灿

    2012-01-01

    针对低压电力线非线性信道特性及不同步因素对于载波信号相位的影响,笔者提出了一种基于最大似然估计的相位补偿算法.首先分析了同步问题对于误码率的影响.其次,介绍了相位补偿算法的原理及关键技术的分析.最后在DSP中实现了相位补偿算法的程序设计,并在实际的低压信道中进行测试.测试结果表明:该算法可以有效地解决数字通信中信道的非线性引起的信号失真问题.%To investigate the influence of nonlinearity and asynchronization of low-voltage power line channel on phase of carrier signal,a phase compensation algorithm based on maximum likelihood estimation is proposed. First the influence of synchronization on BER is analyzed, then the principle of the phase compensation algorithm and key technology are introduced. Finally,program of the phase compensation algorithm is implemented in DSP, and is tested in actual low-voltage channel. The result shows that the proposed algorithm can eliminate signal distortion caused by nonlinearity of channel in digital communication.

  5. 应用于全数字锁相环的动态器件匹配与低功耗鉴相技术%Dynamic Element Matching and Low-Power Phase Detecting Technology Applied in ADPLL

    Institute of Scientific and Technical Information of China (English)

    刘鹏飞; 李巍; 李宁

    2013-01-01

    提出了应用于全数字锁相环的改进的动态器件匹配技术和低功耗鉴相技术.利用低功耗鉴相技术简化了传统的全数字锁相环的鉴相原理,发明出一种新型的数字鉴相器,降低了数字电路实现的复杂性,降低了功耗;同时,本文所述的应用于全数字锁相环的动态器件匹配技术,降低了电容的工艺偏差对锁相环输出调谐曲线的不利影响,优化了锁相环的性能.该全数字锁相环采用TSMC 0.13μm CMOS工艺进行设计,仿真结果表明,本文所述的低功耗鉴相器功能正确,可使全数字锁相环正确地锁定在2.4~5.2 GHz,本文所述的基于改进算法的芯片中鉴相器部分具有传统架构鉴相器53.2%的功耗与66.5%的芯片面积.测试结果表明,动态器件匹配技术使振荡器的输出调谐曲线(本文指输出频率与DCO调制字码值的曲线关系)更加接近理想情况.%Improved dynamic element matching and low-power phase detecting technology applied in all digital phase lock loop(ADPLL) are proposed.The lower-power phase detecting technique lowers the power consumption and circuit complexity in digital circuit by simplifying the traditional phase detecting principle and developing a newtype phase detector.Meanwhile,in order to weaken the influence of digital controlled oscillator(DCO) capacitor mismatch to loop output tuning curve,the dynamic element matching technology is applied in the all digital phase lock loop.The proposed phase lock loop is fabricated in TSMC 0.13 μm CMOS technology.Simulation results show that the low-power phase detector works correctly,cuts the power consumption to 53.2%,and cuts area to 66.5%; also,the locking range of the proposed phase lock loop is from 2.4 GHz to 5.2 GHz.The measurement results show that the tuning curve of DCO with DEM is far closer to the ideal tuning curve than that of DCO without DEM.

  6. 承插焊接接头超声相控阵检测技术%Ultrasonic Phased Array Inspection Technology of Socket Welded Joint

    Institute of Scientific and Technical Information of China (English)

    罗宏建; 周重回; 张杰

    2011-01-01

    In order to inspect the imerior default of the socket welded joint, ultrasonic phased array was applied based on developing the artificial defect block. The advantage and the prospect of ultrasonic phased array inspecting in socket welded joint were discussesed.%针对承插焊接接头内部缺陷无法检测的难题,研制了人工模拟裂纹试块,制定了相控阵检测工艺,并分析了相控阵的检测结果,评述了相控阵检测该类结构的优势及其应用前景.

  7. A Compact W-Band Reflection-Type Phase Shifter with Extremely Low Insertion Loss Variation Using 0.13 µm CMOS Technology

    Directory of Open Access Journals (Sweden)

    Xiao-Dong Deng

    2015-03-01

    Full Text Available This paper presents a reflection-type phase shifter (RTPS at W-band in a 0.13 µm complementary metal oxide semiconductor (CMOS process. The RTPS is composed of a 90° hybrid coupler and two identical reflection loads. Lumped-distributed element transmission line is introduced in the 90° hybrid coupler to reduce the chip size. Series inductor-capacitor (LC resonators are used as the reflective loads and parallel inductors are deployed to reduce insertion loss variation. By cascading two-stage RTPS, 90° phase shifting range and 10.5 dB insertion loss with 1 dB variations from 80 GHz to 90 GHz are achieved. An impressive 0.1 dB variation is obtained at 86 GHz.

  8. Japan-Australia Co-operative Program on research and development of technology for the management of high level radioactive wastes: phase II (1990-1995)

    Energy Technology Data Exchange (ETDEWEB)

    Banba, Tsunetaka [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Hart, K.P. [eds.

    1996-05-01

    The major activities associated with Japan-Australia Co-operative Program were the preparation, characterization and subsequent testing of both Cm-doped Synroc containing PW-4b simulated waste and Cm-doped single-phase zirconolite and perovskite, and the initiation of studies on naturally-occurring zirconolites to study the long-term durability of this mineral phase over geological time. The preparation of the Cm-doped samples was carried out in JAERI`s WASTEF facility at Tokai, with technical information and assistance provided by ANSTO where necessary. The experiments were designed to induce accelerated radiation damage in Synroc samples that would correspond to periods of Synroc storage of up to 100,000 years. The results are of considerable importance in evaluating the potential of the Synroc process as a means of dealing with HLW waste streams and represent a significant contribution to the understanding of the ability of Synroc to immobilize HLW elements. Overall the Phase II Co-operative Program has continued the excellent co-operative working relationship between the staff at the two institutions, and provided a better understanding of the potential advantages and limitations of Synroc as a second generation waste form. The work has shown the need for additional studies to be carried out on the effect of the levels of Cm-doping on the Cm leach rate, extension of natural analogue studies to define the geological conditions under which zirconolite is stable and development of models to provide long-term predictions of releases of HLW elements from Synroc under a range of repository conditions. It is strongly recommended that the program carried out in Phase II of the Co-operative Agreement be extended for a further three years to allow additional information on the above areas to be collected and reported in a document providing an overview of the Co-operative Program and recommendations on HLW management strategies. (J.P.N.).

  9. Development of nuclear thermal hydraulic verification tests and evaluation technology - Development of the ultrasonic method for two-phase mixture level measurement in nuclear reactor

    Energy Technology Data Exchange (ETDEWEB)

    No, Hee Cheon; Kim, Sang Jae; Kim, Hyung Tae; Moon, Young Min [Korea Advanced Institute of Science and Technology, Taejon (Korea)

    2000-04-01

    An ultrasonic method is developed for the measurement of the two-phase mixture level in the reactor vessel or steam generator. The ultrasonic method is selected among the several non-nuclear two-phase mixture level measurement methods through two steps of selection procedure. A commercial ultrasonic level measurement method is modified for application into the high temperature, pressure, and other conditions. The calculation method of the ultrasonic velocity is modified to consider the medium as the homogeneous mixture of air and steam, and to be applied into the high temperature and pressure conditions. The cross-correlation technique is adopted as a detection method to reduced the effects of the attenuation and the diffused reflection caused by surface fluctuation. The waveguides are developed to reduce the loss of echo and to remove the effects of obstructs. The present experimental study shows that the developed ultrasonic method measures the two-phase mixture level more accurately than the conventional methods do. 21 refs., 60 figs., 13 tabs. (Author)

  10. A low-phase-noise Ka-band push-push voltage-controlled oscillator using CMOS/glass-integrated passive device technologies.

    Science.gov (United States)

    Wang, Sen

    2014-09-01

    In this paper, a Ka-band CMOS push-push voltage- controlled oscillator (VCO) integrated into a glass-integrated passive device (GIPD) process is presented. The transformer, λ/4 transmission line, and inductors of the VCO are realized in the GIPD process, achieving superior performances, and therefore improve the phase noise of the VCO. Moreover, the transformer-based VCO is a differential Hartley topology to further reduce the phase noise and chip area. Operating at 1.8 V supply voltage, the VCO core consumes merely 3.8 mW of dc power. The measured phase noise is -109.18 dBc/Hz at 1 MHz offset from the 30.84 GHz oscillation frequency. The push-push VCO also demonstrates a 24.5 dB fundamental rejection, and exhibits an 8.4% tuning range. Compared with recently published CMOS-based VCOs, it is observed that the proposed VCO exhibits excellent performance under low power consumption.

  11. Small Business Innovation Research GRC Phase I, Phase II, and Post-Phase II Opportunity Assessment for 2015

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.

    2016-01-01

    This report outlines the 2015 Small Business Innovation Research/Small Business Technology Transfer (SBIR/STTR) Phase I, Phase II, and Post-Phase II opportunity contract award results associated with NASA's Aeronautics Research Mission Directorate (ARMD), Human Exploration and Operations Mission Directorate (HEOMD), Science Mission Directorate (SMD), and Space Technology Mission Directorate (STMD) for NASA Glenn Research Center. The report also highlights the number of Phase I, Phase II, and Post-Phase II contracts awarded by mission directorate. The 2015 Phase I contract awards to companies in Ohio and their corresponding technologies are also discussed.

  12. Wireless Sensor Portal Technology Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Mobitrum Corporation has demonstrated the feasibility in the Phase I of " A Wireless Sensor Portal Technology" and proposes a Phase II effort to develop a wireless...

  13. T形焊缝超声相控阵检测的计算机辅助技术%Computer-Aided Technology of Ultrasonic Phased Array Inspection for T-Weld

    Institute of Scientific and Technical Information of China (English)

    陆铭慧; 程俊; 张颖

    2012-01-01

    超声相控阵技术在T形焊缝中的应用表现出其明显优势,但声波在T形焊缝中的辐射区域不能形象界定,且回波来源的位置得不到准确地判断.针对T形焊缝的结构编译了超声相控阵检测辅助软件,对试样中的人工孔检测表明:采用计算机辅助技术可以实现T形焊缝超声相控阵扇扫声束覆盖及回波信号的识别.%The application of the ultrasonic phased array technology on T-weld shows its obvious advantages. However, the beam areas of T-weld still can not be defined, and can not estimate the position of the echo. According to the structure of the T-weld, the ultrasonic phased array inspection support software is compiled. Artificial sample tests suggests that the computer-aided technology could achieve the beam coverage of T-welded and help to distinguish the echo signal.

  14. FTIR干涉图相位校正技术的研究%Research of phase correction technology based on interference pattern in FTIR

    Institute of Scientific and Technical Information of China (English)

    朱超; 鲁昌华; 刘文清; 张玉钧; 陈晓婷; 杨凯

    2013-01-01

    Phase correction of interference pattern is a key step of spectrum reconstruction.At present,traditional Mertz method works not well to deal with the nonlinear phase correction,while Forman method has poor real-time application due to much convolution operation.Therefore,a new improved method,in which industrial zone's atmospheric window is under the monitor,is proposed in this paper.Firstly,8 912 single sided interference patterns are collected,then phase correction skill by Conjugate Fourier Transform and interference pattern shift are improved.The experiment shows that this method eliminates the plural problems and the phase errors introduced due to the Fourier Transform or discrete cosine Fourier Transform,reduces the requirements of interference pattern for apodization function,improves spectral resolution and accuracy of reconstruction spectrum.Finally,quantitative analysis of the content of MTBE in the gas is carried out.By contrast,the accuracy of quantitative calculation result is improved after phase correction by the method in this paper.This method gains good application in engineering monitoring.%干涉图相位校正是光谱复原的关键环节之一,目前常用的Mertz法对非线性相位误差的校正效果差,Forman法有很多的卷积运算量,实时性差.本文实验中首先以工业园大气窗口为被测对象,采集8 912点的单边干涉图数据,然后采用了共轭傅里叶变换和干涉图搬移方法对相位校正技术改进,实验研究表明,该方法消除了由傅里叶变换或离散余弦傅里叶变换引入的复数问题和相位误差,降低了干涉图对切趾函数的要求,提高了光谱分辨率和重构光谱精度,最后,定量分析汽油中MTBE的含量,对比实验表明,经过本文方法相位校正后的定量计算结果精度得到提高,该方法在工程监测中得到了很好的应用.

  15. Phase change memory

    CERN Document Server

    Qureshi, Moinuddin K

    2011-01-01

    As conventional memory technologies such as DRAM and Flash run into scaling challenges, architects and system designers are forced to look at alternative technologies for building future computer systems. This synthesis lecture begins by listing the requirements for a next generation memory technology and briefly surveys the landscape of novel non-volatile memories. Among these, Phase Change Memory (PCM) is emerging as a leading contender, and the authors discuss the material, device, and circuit advances underlying this exciting technology. The lecture then describes architectural solutions t

  16. Fundamentals of technology roadmapping

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, M.L.; Bray, O.H.

    1997-04-01

    Technology planning is important for many reasons. Globally, companies are facing many competitive problems. Technology roadmapping, a form of technology planning can help deal with this increasingly competitive environment. While it has been used by some companies and industries, the focus has always been on the technology roadmap as a product, not on the process. This report focuses on formalizing the process so that it can be more broadly and easily used. As a DOE national security laboratory with R&D as a major product, Sandia must do effective technology planning to identify and develop the technologies required to meet its national security mission. Once identified, technology enhancements or new technologies may be developed internally or collaboratively with external partners. For either approach, technology roadmapping, as described in this report, is an effective tool for technology planning and coordination, which fits within a broader set of planning activities. This report, the second in a series on technology roadmapping, develops and documents this technology roadmapping process, which can be used by Sandia, other national labs, universities, and industry. The main benefit of technology roadmapping is that it provides information to make better technology investment decisions by identifying critical technologies and technology gaps and identifying ways to leverage R&D investments. It can also be used as a marketing tool. Technology roadmapping is critical when the technology investment decision is not straight forward. This occurs when it is not clear which alternative to pursue, how quickly the technology is needed, or when there is a need to coordinate the development of multiple technologies. The technology roadmapping process consists of three phases - preliminary activity, development of the technology roadmap, and follow-up activity.

  17. Comparative investigation of power control of axial blowers for liquefiers and recirculation coolers: Phase controller, frequency converter, transformers, EC technology; Vergleich der Leistungsregelung von Axialventilatoren fuer Verfluessiger und Rueckkuehler: Phasenanschnittregler, Frequenzumformer, Transformatoren, EC Technik

    Energy Technology Data Exchange (ETDEWEB)

    Hubert, G. [Hans Guentner GmbH, Fuerstenfeldbruck (Germany)

    2003-07-01

    Phase controllers are well suited for liquefaction pressure control, and energy savings are higher than with blower shut-off. They emit noise in the 300 Hz range and need an additional acoustic filter if noise reduction in part-load operation is required. Frequency controllers with all-terminal sinusoid filters have a higher saving potential at 40-80 percent of the volume flow as compared to phase controllers. Noise is significantly lower than in phase controllers, even with acoustic filters. The best performance was obtained with EC technology, which had the highest energy savings and noise levels similar to transformer control, which was hitherto considered to be the best option. (orig.) [German] Phasenanschnittregler sind zur Verfluessigungsdruckregelung gut geeignet und bieten ein groesseres Energieeinsparpotential als die Methode der Ventilatorabschaltung. Wenn die Schallreduzierung im Teillastbereich wichtig ist, sind sie wegen der stoerend wirkenden 300 Hz Tonanteilen nicht geeignet. Hier kann ein zusaetzlicher Geraeuschfilter groesstenteils Abhilfe schaffen. Frequenzregler mit allpoligem Sinusfilter haben deutliche Einsparpotentiale im Bereich von 40% bis 80% des Volumenstroms gegenueber den Phasenanschnittreglern. Die Schallreduzierung wirkt bis in die unteren Drehzahlbereiche und liegt deutlich unter den Werten der Phasenanschnittsteuerung mit Geraeuschfilter. Den hoechsten Gesamtwirkungsgrad ueber den ganzen Luftfoerderbereich liefert die getestete EC-Technik. In allen Betriebspunkten ist somit die hoechste Energieersparnis gegeben. Die Schallreduzierung ist gleichwertig mit den Ergebnissen der Transformatorregelung, die bisher als geraeuschlos bestes Verfahren eingesetzt wurde. (orig.)

  18. Technology of Virtual Imaging Process with Phase Points Weighting of Neighbors%考虑相位加权的邻点滤波虚拟成像处理技术

    Institute of Scientific and Technical Information of China (English)

    丁玲

    2014-01-01

    The virtual imaging processing difficulty lied in the whole image information can not be effectively connected on a plurality of phase point, and the image quality can not be improved, so the imaging result was poor. The virtual imaging process technology with phase points weighting of neighbors was proposed, the phase information of neighboring pixels as an imaging element in the process was collected, with a phase reconstruction method, the phase of the adjacent pixel depth reorganization was greatly improved. The realistic virtual imaging was used to do test experiment, the result shows that with the phase points weighting of neighbors method, the image processing works well, the mean and variance of the phase noise are very small, so it has very good imaging application value for use.%虚拟成像处理技术的难点在于成像处理时,由于整幅图像上多个相位点信息不能够有效关联,提高图像质量,所以成像结果很差。提出考虑相位加权的邻点滤波虚拟成像处理技术,在虚拟成像处理时,将近邻像点的相位信息作为成像处理中的对象,采用相位加权的方法,将相邻像点的相位进行深度加权,大大提高图像的质量。采用实际的虚拟成像进行测试实验,结果显示,采用基于考虑相位加权邻点滤波的虚拟成像处理技术,图像处理的效果很好,相位噪声均值和方差均很小,具有很好的成像应用价值。

  19. Final Report: DoE SBIR Phase 2 Low-Cost Small Diameter NMR Technologies for In-Situ Subsurface Characterization and Monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Walsh, David Oliver [Vista Clara Inc., Mukilteo, WA (United States)

    2010-09-03

    In this Phase 2 SBIR program, Vista Clara successfully developed and field-tested small diameter NNR logging tools for subsurface characterization and monitoring. This effort involved the design and development surface electronics, a winch with 470ft cable, and three interchangeable downhole probes: a 3.5â diameter borehole NMR probe, a 1.67â diameter borehole NMR probe, and a 2.5â diameter NMR probe that can be deployed using a Geoprobe direct push machine. The 3.5â probe was tested extensively over a 6 week period including 4â to 8â boreholes in Washington, Idaho, Nebraska, Colorado, Kansas, Connecticut and Massachusetts. The field test campaign was highly successful. The 1.67â probe was assembled, tested and calibrated in the laboratory. The 2.5â Geoprobe probe is in final assembly and testing at the time of this report. The completed Phase 2 R&D program has resulted in the first NMR logging tool that can be deployed in boreholes of 4â diameter, the first NMR logging tool that can be deployed in boreholes on 2â diameter, and the first NMR logging tool that can be deployed by a direct push machine. These small diameter tools make NMR logging technically and economically feasible, for the first time. Previously available NMR logging tools were developed for oilfield applications and are prohibitively large and expensive for the majority of near surface groundwater characterization problems.

  20. Technology support for initiation of high-throughput processing of thin-film CdTe PV modules. Phase II technical report, March 14, 1996--March 13, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Sasala, R.; Powell, R.; Dorer, G. [Solar Cells, Inc., Toledo, OH (United States)

    1997-09-01

    Research at Solar Cells Inc. is focused on developing processes which will lead to high volume and low cost manufacturing of solar cells and to increase the performance of their present technology. The process research has focused on developing vapor transport deposition of the semiconductors, eliminating wet chemistry steps while minimizing the chloride treatment time, forming a low-loss back contact using only dry processing, and an improved interconnection technique. The performance improvement work has focused on the increase of the photocurrent by a combination of more transparent glass substrates and a thinner CdS window layer deposited on an i-SnO{sub 2} buffer layer. SCI record 13.0% 1 cm{sup 2} devices have been fabricated using these techniques. Stability monitoring continues and shows minimal degradation for over 20,000 hours of continuous light soak at 0.8 sun illumination.

  1. Technology support for high-throughput processing of thin-film CdTe PV modules: Annual technical report, Phase 1, 1 April 1998--31 March 1999

    Energy Technology Data Exchange (ETDEWEB)

    Rose, D.H.; Powell, R.C.; Grecu, D.; Jayamaha, U.; Hanak, J.J.; Bohland, J.; Smigielski, K.; Dorer, G.L.

    1999-10-25

    This report describes work performed by First Solar, L.L.C., during Phase 1 of this 3-year subcontract. The research effort of this subcontract is divided into four areas: (1) process and equipment development, (2) efficiency improvement, (3) characterization and analysis, and (4) environmental, health, and safety. As part of the process development effort, the output of the pilot-production facility was increased. More than 6,200 8-ft{sup 2} CdS/CdTe plates were produced during Phase 1--more than double the total number produced prior to Phase 1. This increase in pilot-production rate was accomplished without a loss in the PV conversion efficiency: the average total-area AM1.5 efficiency of sub-modules produced during the reporting period was 6.4%. Several measurement techniques, such as large-area measurement of CdS thickness, were developed to aid process improvement, and the vapor-transport deposition method was refined. CdTe thickness uniformity and reproducibility were improved. From a population of more than 1,100 plates, the mean standard deviation within a plate was 7.3% and the standard deviation of individual-plate averages was 6.8%. As part of the efficiency-improvement task, research was done on devices with thin-CdS and buffer layers. A cell with 13.9% efficiency was produced on a high-quality substrate, and higher than 12% efficiency was achieved with a cell with no CdS layer. A number of experiments were performed as part of the characterization and analysis task. The temperature dependence of CdTe modules was investigated; the power output was found to be relatively insensitive (<5%) to temperature in the 25 to 50 C range. As part of the characterization and analysis task, considerable effort was also given to reliability verification and improvement. The most carefully monitored array, located at the NREL, was found to have unchanged power output within the margin of error of measurement (5%) after 5 years in the field. The first round of National

  2. Plasminogen-based capture combined with amplification technology for the detection of PrP(TSE in the pre-clinical phase of infection.

    Directory of Open Access Journals (Sweden)

    Christiane Segarra

    Full Text Available BACKGROUND: Variant Creutzfeldt-Jakob disease (vCJD is a neurodegenerative infectious disorder, characterized by a prominent accumulation of pathological isoforms of the prion protein (PrP(TSE in the brain and lymphoid tissues. Since the publication in the United Kingdom of four apparent vCJD cases following transfusion of red blood cells and one apparent case following treatment with factor VIII, the presence of vCJD infectivity in the blood seems highly probable. For effective blood testing of vCJD individuals in the preclinical or clinical phase of infection, it is considered necessary that assays detect PrP(TSE concentrations in the femtomolar range. METHODOLOGY/PRINCIPAL FINDINGS: We have developed a three-step assay that firstly captures PrP(TSE from infected blood using a plasminogen-coated magnetic-nanobead method prior to its serial amplification via protein misfolding cyclic amplification (PMCA and specific PrP(TSE detection by western blot. We achieved a PrP(TSE capture yield of 95% from scrapie-infected material. We demonstrated the possibility of detecting PrP(TSE in white blood cells, in buffy coat and in plasma isolated from the blood of scrapie-infected sheep collected at the pre-clinical stage of the disease. The test also allowed the detection of PrP(TSE in human plasma spiked with a 10(-8 dilution of vCJD-infected brain homogenate corresponding to the level of sensitivity (femtogram required for the detection of the PrP(TSE in asymptomatic carriers. The 100% specificity of the test was revealed using a blinded panel comprising 96 human plasma samples. CONCLUSION/SIGNIFICANCE: We have developed a sensitive and specific amplification assay allowing the detection of PrP(TSE in the plasma and buffy coat fractions of blood collected at the pre-clinical phase of the disease. This assay represents a good candidate as a confirmatory assay for the presence of PrP(TSE in blood of patients displaying positivity in large scale screening

  3. 三相泡沫防灭火技术在自燃采面的应用%Application of Three -phase Foam Fire -fighting Technology in Spontaneous Combustion

    Institute of Scientific and Technical Information of China (English)

    张中岭

    2015-01-01

    Introduces HTC spontaneous process and cause of 21021 mining face in Hongda Coal Mine,through the analysis,after compa-ring the three -phase foam fire -fighting technology governance,the fire area supplemented by local pressure ventilation,successfully solves the mining face of spontaneous combustion,to ensure the safety in production,has a certain reference value.%介绍了宏达煤矿21021采煤工作面发生自燃的过程及原因,通过分析、对比后采用三相泡沫防灭火技术对火区进行治理,辅以局部均压通风等,成功解决了采面自燃,保证了安全生产,具有一定的借鉴价值。

  4. Research progress of liquid phase micro-extraction technology in the field of drug analysis%液相微萃取技术在毒品分析领域的研究进展

    Institute of Scientific and Technical Information of China (English)

    王萌; 郑珲; 翟晚枫; 张春水

    2012-01-01

    This paper gives a review of the research progress in the field of forensic science drug analysis at home and abroad in recent years. It gives a comprehensive summary of modes, principles, influencing factors and characteristics of liquid phase micro-extraction technology, hoping to provide some help for forensic science drug analysis and handling cases.%本文综述了近年来液相微萃取技术在国内外法庭科学毒品分析领域的研究应用进展,对液相微萃取技术的不同实现模式及对应的原理、影响因素、方法特点进行了系统总结.以期能够为法庭科学领域的毒品研究和办案提供一些帮助.

  5. Test and approval center for fuel cell and hydrogen technologies: Phase I. Initiation. Final report; Test- og godkendelsescenter for braendselscelle- og brintteknologier. Fase 1. Opstart. Slutrapport

    Energy Technology Data Exchange (ETDEWEB)

    Hagen, A. [Technical Univ. of Denmark. DTU Energy Conversion, DTU Risoe Campus, Roskilde (Denmark)

    2012-09-15

    The aim of the present project was to initialize a Test and Approval Center for Fuel Cell and Hydrogen Technologies at the sites of the project partners Risoe DTU (Fuel Cells and Solid State Chemistry Division), and DGC (work package 1). The project furthermore included start-up of first activities with focus on the development of accelerated life-time tests of fuel cell systems, preparations for standardization of these methods, and advising in relation to certification and approval of fuel cell systems (work package 2). The main achievements of the project were: Work package 1: 1) A large national and international network was established comprising of important commercial players, research institutions, and other test centers; 2) The test center is known in large part of the international Fuel Cell and Hydrogen community due to substantial efforts in 'marketing'; 3) New national and international projects have been successfully applied for, with significant roles of the test center, which secure the further establishment and development of the center. Work package 2: 1) Testing equipment was installed and commissioned at DTU (Risoe Campus); 2) A comprehensive survey among international players regarding activities on accelerated SOFC testing was carried out; 3) A test procedure for 'compressed' testing of SOFC in relation to {mu} CHP application was developed and used for one-cell stack and 50-cell-stack testing; 4) Guidelines for Danish authority handling were formulated. (Author)

  6. Solid Phase Extraction Technology and its Application in Water Analysis%固相萃取技术及其在水样分析中的应用

    Institute of Scientific and Technical Information of China (English)

    陈加娜; 宾赞; 谢晖; 刘锦

    2014-01-01

    固相萃取作为一种新型的预处理方法,近年来得到了广泛的应用和发展。因其具有有机溶剂使用量少、操作简单、选择性高、重现性好等特点,非常适合水中痕量有机物的富集和浓缩。本文阐述了固相萃取的基本原理、分类及其常用吸附剂和洗脱液的种类,并以水中多环芳烃、有机磷农药的预处理为例,介绍了固相萃取技术在水样分析中的应用。%As a new pretreatment method, the solid phase extraction ( SPE) was obtained extensive application and development. The SPE had advantages of lower dosages of organic solvent, simple operation, high selectivity, and good reproducibility, etc. This technique highly fit to enrich and concentrate the trace organic compounds in water. The principle and classification of the SPE, and its type of absorbent and eluent were summarized. The application of SPE in the analysis of water was also introduced based on the examples of the pretreatment of polycyclic aromatic hydrocarbons and organophosphorus pesticides.

  7. Challenges and Performance of the Frontier Technology Applied to an ATLAS Phase-I Calorimeter Trigger Board Dedicated to the Jet Identification

    CERN Document Server

    Kahra, Christian; The ATLAS collaboration

    2017-01-01

    The '{Phase-I}' upgrade of the Large Hadron Collider (LHC), scheduled to be completed in 2021, will lead to an enhanced collision luminosity of $2.5 \\times 10^{34} \\, \\mathrm{cm}^{-2} \\, \\mathrm{s}^{-1}$. To cope with the new and challenging accelerator conditions, all the CERN experiments have planned a major detector upgrade to be installed during the associated experimental shutdown period. One of the physics goals of the ATLAS experiment is to maintain sensitivity to electroweak processes despite the increased number of interactions per LHC bunch crossing. To this end, the component of the first level hardware trigger based on calorimeter data will be upgraded to exploit fine-granularity readout using a new system of Feature EXtractors (FEXs), which each uses different physics objects for trigger selection. There will be three FEX systems in total, with this contribution focusing on the first prototype of the jet FEX (jFEX). This system identifies jets and large area tau candidates while also calculating ...

  8. Challenges and performance of the frontier technology applied to an ATLAS Phase-I calorimeter trigger board dedicated to the jet identification

    CERN Document Server

    Kahra, Christian; The ATLAS collaboration

    2017-01-01

    The 'Phase-I' upgrade of the Large Hadron Collider (LHC), scheduled to be completed in 2021, will lead to an enhanced collision luminosity of 2.5x10e34cm-2s-1. To cope with the new and challenging accelerator conditions, all the CERN experiments have planned a major detector upgrade to be installed during the associated experimental shutdown period. One of the physics goals of the ATLAS experiment is to maintain sensitivity to electroweak processes despite the increased number of interactions per LHC bunch crossing. To this end, the component of the first level hardware trigger based on calorimeter data will be upgraded to exploit fine-granularity readout using a new system of Feature EXtractors (FEXs), which each uses different physics objects for trigger selection. There will be three FEX systems in total, with this contribution focusing on the first prototype of the jet FEX (jFEX). This system identifies jets and large area tau candidates while also calculating global variables such as transverse energy su...

  9. Preparation, characterization, and applications of a novel solid-phase microextraction fiber by sol-gel technology on the surface of stainless steel wire for determination of poly cyclic aromatic hydrocarbons in aquatic environmental samples

    Energy Technology Data Exchange (ETDEWEB)

    Es-haghi, Ali, E-mail: a.eshaghi@rvsri.ac.ir [Department of Physico Chemistry, Razi Vaccine and Serum Research Institute, PO Box 31975/148, Karaj (Iran, Islamic Republic of); Hosseininasab, Valiallah; Bagheri, Habib [Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, PO Box 11365-9516, Tehran (Iran, Islamic Republic of)

    2014-02-01

    Highlights: • A novel solid-phase microextraction (SPME) fiber was prepared using sol–gel technology. • Sol–gel coating was performed on stainless steel substrate. • The new fibers are robust and unbreakable with temperature stability. • The fibers were used for extraction of PAHs from aqueous samples. Abstract: A novel solid-phase microextraction(SPME) fiber was prepared using sol–gel technology with ethoxylated nonylphenol as a fiber coating material. The fiber was employed to develop a headspace SPME–GC–MS method suitable for quantification of 13 polycyclic aromatic hydrocarbons (PAHs) in water samples. Surface characteristics of the fibers were inspected by energy dispersive X-ray (EDX) spectroscopy as well as by scanning electron microscopy (SEM). The SEM measurements showed the presence of highly porous nano-sized particles in the coating. Important parameters affecting the extraction efficiency such as extraction temperature and time, desorption conditions as well as ionic strength have been evaluated and optimized. In the next step, the validation of the new method have been performed, finding it to be specific in the trace analysis of PAHs, with the limit of detection (LOD) ranging from 0.01 to 0.5 μg L⁻¹ and the linear range from the respective LOD to 200 μg L⁻¹with RSD amounting to less than 8%. The thermal stability of the fibers was investigated as well and they were found to be durable at 280 °C for 345 min. Furthermore, the proposed method was successfully applied for quantification of PAHs in real water samples.

  10. Air Traffic Management Technology Demostration Phase 1 (ATD) Interval Management for Near-Term Operations Validation of Acceptability (IM-NOVA) Experiment

    Science.gov (United States)

    Kibler, Jennifer L.; Wilson, Sara R.; Hubbs, Clay E.; Smail, James W.

    2015-01-01

    The Interval Management for Near-term Operations Validation of Acceptability (IM-NOVA) experiment was conducted at the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) in support of the NASA Airspace Systems Program's Air Traffic Management Technology Demonstration-1 (ATD-1). ATD-1 is intended to showcase an integrated set of technologies that provide an efficient arrival solution for managing aircraft using Next Generation Air Transportation System (NextGen) surveillance, navigation, procedures, and automation for both airborne and ground-based systems. The goal of the IMNOVA experiment was to assess if procedures outlined by the ATD-1 Concept of Operations were acceptable to and feasible for use by flight crews in a voice communications environment when used with a minimum set of Flight Deck-based Interval Management (FIM) equipment and a prototype crew interface. To investigate an integrated arrival solution using ground-based air traffic control tools and aircraft Automatic Dependent Surveillance-Broadcast (ADS-B) tools, the LaRC FIM system and the Traffic Management Advisor with Terminal Metering and Controller Managed Spacing tools developed at the NASA Ames Research Center (ARC) were integrated into LaRC's Air Traffic Operations Laboratory (ATOL). Data were collected from 10 crews of current 757/767 pilots asked to fly a high-fidelity, fixed-based simulator during scenarios conducted within an airspace environment modeled on the Dallas-Fort Worth (DFW) Terminal Radar Approach Control area. The aircraft simulator was equipped with the Airborne Spacing for Terminal Area Routes (ASTAR) algorithm and a FIM crew interface consisting of electronic flight bags and ADS-B guidance displays. Researchers used "pseudo-pilot" stations to control 24 simulated aircraft that provided multiple air traffic flows into the DFW International Airport, and recently retired DFW air traffic controllers served as confederate Center, Feeder, Final

  11. Subtask 2.18 - Advancing CO2 Capture Technology: Partnership for CO2 Capture (PCO2C) Phase III

    Energy Technology Data Exchange (ETDEWEB)

    Kay, John; Azenkeng, Alexander; Fiala, Nathan; Jensen, Melanie; Laumb, Jason; Leroux, Kerryanne; McCollor, Donald; Stanislowski, Joshua; Tolbert, Scott; Curran, Tyler

    2016-03-31

    Industries and utilities continue to investigate ways to decrease their carbon footprint. Carbon capture and storage (CCS) can enable existing power generation facilities to meet the current national CO2 reduction goals. The Partnership for CO2 Capture Phase III focused on several important research areas in an effort to find ways to decrease the cost of capture across both precombustion and postcombustion platforms. Two flue gas pretreatment technologies for postcombustion capture, an SO2 reduction scrubbing technology from Cansolv Technologies Inc. and the Tri-Mer filtration technology that combines particulate, NOx, and SO2 control, were evaluated on the Energy & Environmental Research Center’s (EERC’s) pilot-scale test system. Pretreating the flue gas should enable more efficient, and therefore less expensive, CO2 capture. Both technologies were found to be effective in pretreating flue gas prior to CO2 capture. Two new postcombustion capture solvents were tested, one from the Korea Carbon Capture and Sequestration R&D Center (KCRC) and one from CO2 Solutions Incorporated. Both of these solvents showed the ability to capture CO2 while requiring less regeneration energy, which would reduce the cost of capture. Hydrogen separation membranes from Commonwealth Scientific and Industrial Research Organisation were evaluated through precombustion testing. They are composed of vanadium alloy, which is less expensive than the palladium alloys that are typically used. Their performance was comparable to that of other membranes that have been tested at the EERC. Aspen Plus® software was used to model the KCRC and CO2 Solutions solvents and found that they would result in significantly improved overall plant performance. The modeling effort also showed that the parasitic steam load at partial capture of 45% is less than half that of 90% overall capture, indicating savings that

  12. 一种高效的两相步进电机控制技术%An Efficient Control Technology of Two-phase Stepper Motor

    Institute of Scientific and Technical Information of China (English)

    张军; 葛悦; 刘超

    2012-01-01

    Direct at Miniaturization character and long-period requirements for the aerospace product, the high reliability control system of two-phase stepper motor for aerospace is proposed . ATMEL80C32 is used as control chip for the system, PWM modulation circuit SG3525 and H -bridge LMD18200 are used to design the circuit for the control and drive system of stepper motor. This control system also includes closed -loop control of motor-current by current - feedback net. The function of constant -current divided and PWM control is provided for this system. Output of maximal 256 divided segments of the sinusoidal current is testified by experiments result. This system is simple and reliable, and able to meet the high reliability long-period and miniaturization character requirements for aerospace products.%针对航天产品的小型化长寿命特点,设计了一种高可靠的航天用两相步进电机控制电路;系统采用单片机ATMEL80C32作为主控芯片,利用集成度较高的PWM控制芯片SG3525和电机运动控制芯片LMD18200设计驱动控制电路,并与电流反馈网络构成了电机电流的闭环控制,具有恒流正弦细分和PWM控制的功能,试验表明该系统最高可输出256细分的正弦波电流,电路简单可靠,能够满足航天产品高可靠性长寿命及小型化的需求.

  13. DENSE PHASE REBURN COMBUSTION SYSTEM (DPRCS) DEMONSTRATION ON A 154 MWE TANGENTIAL FURNACE: ADDITIONAL AREA OF INTEREST-TO DEVELOP AND DEMONSTRATE AN IN-FURNACE MULTI-POLLUTANT REDUCTION TECHNOLOGY TO REDUCE NOx, SO2 & Hg

    Energy Technology Data Exchange (ETDEWEB)

    Allen C. Wiley; Steven Castagnero; Geoff Green; Kevin Davis; David White

    2004-03-01

    Semi-dense phase pneumatic delivery and injection of calcium and sodium sorbents, and microfine powdered coal, at various sidewall elevations of an online operating coal-fired power plant, was investigated for the express purpose of developing an in-furnace, economic multi-pollutant reduction methodology for NO{sub x}, SO{sub 2} & Hg. The 154 MWe tangentially-fired furnace that was selected for a full-scale demonstration, was recently retrofitted for NO{sub x} reduction with a high velocity rotating-opposed over-fire air system. The ROFA system, a Mobotec USA technology, has a proven track record of breaking up laminar flow along furnace walls, thereby enhancing the mix of all constituents of combustion. The knowledge gained from injecting sorbents and micronized coal into well mixed combustion gases with significant improvement in particulate retention time, should serve well the goals of an in-furnace multi-pollutant reduction technology; that of reducing back-end cleanup costs on a wide variety of pollutants, on a cost per ton basis, by first accomplishing significant in-furnace reductions of all pollutants.

  14. Spinodal Theory: A Common Rupturing Mechanism in Spinodal Dewetting and Surface Directed Phase Separation (Some Technological Aspects: Spatial Correlations and the Significance of Dipole-Quadrupole Interaction in Spinodal Dewetting

    Directory of Open Access Journals (Sweden)

    Satya Pal Singh

    2011-01-01

    Full Text Available The emerging structures in spinodal dewetting of thin nano films and spinodal decomposition of binary mixtures are found to be similar with certain differences attributed to the nonlinearities inherent in the wetting forces. This paper deals with the technological aspects of the spinodal processes by giving a brief account of the theory and to correlate the two phenomena termed as spinodal dewetting of thin nanofilms and surface-directed phase separation. The MC simulation micrographs at early stage of spinodal dewetting of a (linear polymer film confined between two hard walls (using FENE potential between the beads on same chain and Morse potential between inter and intra chain beads show similarities with surface-directed phase separation (using metropolis algorithm in creation of holes. The spinodal dewetting is also criticized on the basis of global minimization of free energy emerging from dipole-quadrupole interactions. A novel molecular scale-driving mechanism coming from asymmetric interface formation in spinodal processes is also proposed. It can be believed that the modeling done with the films under confinement of two walls works as a classical mathematical ansatz to the dipole-quadrupole interaction coming from quantum origins and giving rise to lateral interactions in the process reflecting a colossal behavior in thin nano films though weak in nature.

  15. Applying 'Technology Assessment' and 'Evidence Based Medicine' theory to interventional radiology. Part 1: Suggestions for the phased evaluation of new procedures

    Energy Technology Data Exchange (ETDEWEB)

    Malone, Dermot E.; Maceneaney, Peter M

    2000-12-01

    AIM: To compare and contrast interventional radiology (IR) clinical and research practices with the technology assessment and evidence-based medicine (EBM) paradigms and make suggestions for the phased evaluation of new IR procedures. MATERIALS AND METHODS: Course literature of the Association of University Radiologists' 'Basic Technology Assessment for Radiologists' course and the McMaster University Health Information Research Unit's 'How to Teach Evidence-Based Medicine 1999' course were used to identify major publications in each discipline. A computer search was performed to seek other relevant literature. A model of traditional development of IR procedures was developed. Suggestions for the phased evaluation of IR procedures were derived. RESULTS: As in diagnostic radiology, several levels of progressively stronger IR study design can be described and related to EBM 'levels of evidence'. These range from case reports and case series through case-control and cohort studies to randomized controlled trials (RCTs). The major weakness in the existing IR literature is the predominance of small, uncontrolled, case series. Randomized controlled trials are likely to provide the best possible evidence of effectiveness. They are expensive and randomization is sometimes unethical or impractical. Case-control and cohort studies have been under-utilized. Evidence-based medicine indices of benefit and harm have not yet been applied in IR and may have clinical advantages over traditional statistical methods. A literature search (10 years) using MeSH terms 'radiology, interventional' and 'efficacy' yielded 30 papers. Combining 'radiology, interventional' and 'evidence-based medicine' yielded no papers. Comparative searches substituting the term 'diagnostic imaging' for 'radiology, interventional' yielded 4883 and 62 papers, respectively. CONCLUSION: Principles of technology

  16. Phase transformation and diffusion

    CERN Document Server

    Kale, G B; Dey, G K

    2008-01-01

    Given that the basic purpose of all research in materials science and technology is to tailor the properties of materials to suit specific applications, phase transformations are the natural key to the fine-tuning of the structural, mechanical and corrosion properties. A basic understanding of the kinetics and mechanisms of phase transformation is therefore of vital importance. Apart from a few cases involving crystallographic martensitic transformations, all phase transformations are mediated by diffusion. Thus, proper control and understanding of the process of diffusion during nucleation, g

  17. Moon Phases

    Science.gov (United States)

    Riddle, Bob

    2010-01-01

    When teaching Moon phases, the focus seems to be on the sequence of Moon phases and, in some grade levels, how Moon phases occur. Either focus can sometimes be a challenge, especially without the use of models and observations of the Moon. In this month's column, the author describes some of the lessons that he uses to teach the phases of the Moon…

  18. PWM、S-PAM及PHASE电压联动控制技术在变频空调上的应用%The PWM, S-PAM, PHASE and Voltage Linkage Control Technology Using in Inverter Room Air-conditioning

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

      目前,变频空调采用高效永磁同步(大发电常数Ke)压缩机已成趋势,且用于农村的低压地区。根据PWM、S-PAM以及PHASE电压联动控制技术,可使高效永磁同步(Ke值大)压缩机运行到更高的频率且损耗降低;在低压地区,使空调正常运行并保证输出足够的制冷制热能力;在同频率下,比以往的变频压缩机的电流更低,功耗小,更节能。此技术大幅的提高了变频机的运行效率以及降低了压缩机的功率,实现了高效节能的效果,是变频控制技术的节能效果又一次提升,是一种最合适的直流变频压缩机控制技术。%With inverter air conditioner using parmanent magnet synchronous motor, this technique is al-so used in the rural area of low voltage. Because of the technique which are PWM, S-PAM, PHASE and Link-age control, efficient parmanent magnet synchronous motor can run to a higher frequency an lower power con-sumption. And in low voltage area, this technique can make the normal operation of air conditioning and refrig-eration system output enough cool or heat. In the same frequency, the inverter technology is more outstanding than before, which are lower power consumption , lower motor current and more energy saving. The technolo-gy greatly improves the efficient of the frequency conversion air conditioner, and to reduce the motor power con-sumption, realized the high efficiency and energy saving effect. This is a promotion of energy saving effect of the inverter technology, which is one of the most appropriate inverter compressors drive technology.

  19. Research on Ultrasonic Flexible Phased Array Technology for Circumferential Testing of Ultra-high Pressure Crystal Kettle%超高压水晶釜周向检测超声柔性相控阵技术研究

    Institute of Scientific and Technical Information of China (English)

    钟海见; 郭伟灿; 凌张伟

    2016-01-01

    针对内外径之比通常小于0.6的超高压水晶釜超声检测技术,常规的周向超声检测技术存在灵敏度低、缺陷定位困难等技术难点,同时国内外还没有相应的检测标准和成熟的检测工艺。相对于常规超声技术,相控阵技术可以在不更换探头的情况下,实现整个检测区域多角度、多方向扫查和动态聚焦检测,并结合实时成像技术,直观地显示缺陷的位置、分布、尺寸等信息。在试验研究的基础上,提出超高压水晶釜周向超声柔性相控阵检测技术,提出的柔性探头可以良好匹配超高压水晶釜圆柱表面,根据曲面形状设计聚焦法则,可以有效解决超高压水晶釜周向超声检测的技术难题。试验结果表明,柔性相控阵技术对超高压水晶釜的表面和内部缺陷均具有较高的检测精度和可靠性。%For the ultra-high pressure crystal kettle with the ratio of inner radius to outer radius less than 0.6,the conventional circumferential ultrasonic testing could not receive satisfied performance,because of the low sensitivity,locating defects difficultly.Comparing to conventional ultrasonic testing,ultrasonic phased array technology could realized the multi-angle,multi-direction scanning and dynamic focusing de-tection in the entire detecting region without replacement of probe and can visually display the location, distribution,size of defects utilizing the real time imaging technology.Based on the experimental study,the circumferential ultrasonic phased array technique is proposed for ultra-high pressure crystal kettle.A flexi-ble probe is designed which can be good match to the surface of ultra-high pressure crystal kettle.The fo-cal law is designed based on the curved shape and can effective excite the probe.The experimental result show that the flexible phased array technology proposed in this paper has high detection precision and re-liability for the detection of

  20. Implementation factors affecting the large-scale deployment of digital health and well-being technologies: A qualitative study of the initial phases of the 'Living-It-Up' programme.

    Science.gov (United States)

    Agbakoba, Ruth; McGee-Lennon, Marilyn; Bouamrane, Matt-Mouley; Watson, Nicholas; Mair, Frances S

    2016-12-01

    Little is known about the factors which facilitate or impede the large-scale deployment of health and well-being consumer technologies. The Living-It-Up project is a large-scale digital intervention led by NHS 24, aiming to transform health and well-being services delivery throughout Scotland. We conducted a qualitative study of the factors affecting the implementation and deployment of the Living-It-Up services. We collected a range of data during the initial phase of deployment, including semi-structured interviews (N = 6); participant observation sessions (N = 5) and meetings with key stakeholders (N = 3). We used the Normalisation Process Theory as an explanatory framework to interpret the social processes at play during the initial phases of deployment.Initial findings illustrate that it is clear - and perhaps not surprising - that the size and diversity of the Living-It-Up consortium made implementation processes more complex within a 'multi-stakeholder' environment. To overcome these barriers, there is a need to clearly define roles, tasks and responsibilities among the consortium partners. Furthermore, varying levels of expectations and requirements, as well as diverse cultures and ways of working, must be effectively managed. Factors which facilitated implementation included extensive stakeholder engagement, such as co-design activities, which can contribute to an increased 'buy-in' from users in the long term. An important lesson from the Living-It-Up initiative is that attempting to co-design innovative digital services, but at the same time, recruiting large numbers of users is likely to generate conflicting implementation priorities which hinder - or at least substantially slow down - the effective rollout of services at scale.The deployment of Living-It-Up services is ongoing, but our results to date suggest that - in order to be successful - the roll-out of digital health and well-being technologies at scale requires a delicate and pragmatic trade

  1. Implementation factors affecting the large-scale deployment of digital health and well-being technologies: A qualitative study of the initial phases of the ‘Living-It-Up’ programme

    Science.gov (United States)

    Agbakoba, Ruth; McGee-Lennon, Marilyn; Bouamrane, Matt-Mouley; Watson, Nicholas; Mair, Frances S

    2015-01-01

    Little is known about the factors which facilitate or impede the large-scale deployment of health and well-being consumer technologies. The Living-It-Up project is a large-scale digital intervention led by NHS 24, aiming to transform health and well-being services delivery throughout Scotland. We conducted a qualitative study of the factors affecting the implementation and deployment of the Living-It-Up services. We collected a range of data during the initial phase of deployment, including semi-structured interviews (N = 6); participant observation sessions (N = 5) and meetings with key stakeholders (N = 3). We used the Normalisation Process Theory as an explanatory framework to interpret the social processes at play during the initial phases of deployment. Initial findings illustrate that it is clear − and perhaps not surprising − that the size and diversity of the Living-It-Up consortium made implementation processes more complex within a ‘multi-stakeholder’ environment. To overcome these barriers, there is a need to clearly define roles, tasks and responsibilities among the consortium partners. Furthermore, varying levels of expectations and requirements, as well as diverse cultures and ways of working, must be effectively managed. Factors which facilitated implementation included extensive stakeholder engagement, such as co-design activities, which can contribute to an increased ‘buy-in’ from users in the long term. An important lesson from the Living-It-Up initiative is that attempting to co-design innovative digital services, but at the same time, recruiting large numbers of users is likely to generate conflicting implementation priorities which hinder − or at least substantially slow down − the effective rollout of services at scale. The deployment of Living-It-Up services is ongoing, but our results to date suggest that − in order to be successful − the roll-out of digital health and well-being technologies at scale requires a delicate

  2. 基于SOPC/Nios-II与数字移相技术的频率计设计%Realization of Digital Phase Shift Cymometer Based on SOPC/Nios-II Technology

    Institute of Scientific and Technical Information of China (English)

    汪振; 宋跃; 雷瑞庭; 许浩

    2009-01-01

    In order to design digital cymometer as a part of electronic measuring integrated instrument with uClinux operating system. The design of high accurate digital cymometer is to measure frequency and pulse based on SOPC soft corn/ NiosII technology and digital phase shift technology,utilizing cyclone series FPGA chip EP1C6Q240. The range of frequency is from 0. 02 Hz to 225 MHz. The relative accuracy of measurement is less than 1 × 10~(-6). The experiment proves that it is an effective and low-cost solution. It contains the design of SOPC soft IP and NiosII software development. The detail of design method was given,as well as the SignalTap II simulation and error analyze.%为实现uClinux下的电子测量集成仪器中的数字频率计设计,采用Cyclone系列FPGA 芯片EP1C6Q240,运用SOPC软核设计、Nios-II软件开发技术、数字移相技术,实现了0.02 Hz~225 MHz,1×10~(-6)精度的频率及脉宽、相位差的测量.实验表明,这是一种有效、低成本的解决方案.在重点给出该技术实现方法的同时,介绍了系统仿真和误差分析.

  3. Technology to Market Fact Sheet

    Energy Technology Data Exchange (ETDEWEB)

    None

    2016-02-01

    This fact sheet is an overview of the Technology to Market subprogram at the U.S. Department of Energy SunShot Initiative. The SunShot Initiative’s Technology to Market subprogram builds on SunShot’s record of moving groundbreaking and early-stage technologies and business models through developmental phases to commercialization. Technology to Market targets two known funding gaps: those that occur at the prototype commercialization stage and those at the commercial scale-up stage.

  4. Technologies for hypersonic flight

    Science.gov (United States)

    Steinheil, Eckart; Uhse, Wolfgang

    An account is given of the technology readiness requirements of the West German Saenger II air-breathing first-stage, two-stage reusable launcher system. The present, five-year conceptual development phase will give attention to propulsion, aerothermodynamic, materials/structures, and flight guidance technology development requirements. The second, seven-year development phase will involve other West European design establishments and lead to the construction of a demonstration vehicle. Attention is presently given to the air-breathing propulsion system, and to flight-weight structural systems under consideration for both external heating and internal cryogenic tankage requirements.

  5. Vapor Compressor Driven Hybrid Two-Phase Loop Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This Small Business Innovation Research Phase I project will demonstrate a vapor compressor driven hybrid two-phase loop technology. The hybrid two-phase loop...

  6. Phase change materials for thermo-regulated textiles and its manufacturing technology%用于调温纺织品的相变材料及制备技术

    Institute of Scientific and Technical Information of China (English)

    何方容

    2014-01-01

    The smart thermo- regulated textiles can be prepared taking the advantages of the unique fea⁃tures of phase change materials (PCM). The requirement of thermo- regulated textiles to PCM was analyzed, the required properties of PCM suitable for thermo- regulated textiles were discussed, the types of PCM for smart thermo- regulated textiles were introduced, and various manufacturing technologies of composite PCM were summarized.%利用相变材料的独特性能可制备具有智能调温功能的纺织品。分析了调温纺织品对相变材料的要求,讨论了用于调温纺织品的相变材料应具备的条件,介绍了适用于智能调温纺织品的相变材料种类,并对复合相变材料的制备工艺作了总结。

  7. 利用相控阵技术对于厚壁钢管的探伤方法研究%Research of thick-walled steel pipe testing method using phased array technology

    Institute of Scientific and Technical Information of China (English)

    陈树

    2016-01-01

    For the non-destructive testing of thick-walled steel pipe, in general use ray testing or ultrasonic testing. But ray testing or A ultrasonic testing spent more time and low efifciency. Advanced ultrasonic phased array testing technology can improve efifciency. The feasibility and reliability of the thick-walled steel pipe testing was veriifed by drawing a DAC curve of test block comparison method.%对于厚壁钢管的无损探伤,一般采取射线探伤或超声波探伤。但射线探伤和A超探伤所耗费的时间比较长,效率不高。我们可以通过研究超声波中较为先进的相控阵探伤技术来提高效率。对此我们通过试块对比法绘制DAC曲线来验证相控阵技术在钢制厚壁圆管的探伤中的可行性和可靠性。

  8. 固相微萃取技术在法庭科学领域中的应用%Application of Solid-phase Microextraction Technology in the Forensic Science Field

    Institute of Scientific and Technical Information of China (English)

    吴清华; 张振宇

    2016-01-01

    The application of solid-phase microextraction technology in pre-treatment and analysis of toxic drugs and trace evidences(explosive residues, ignitable liquid residues, human odor) that come from the forensic sciencefield at home and aboard were summarized,as well as its application in identifying the ignitable liquid residues and human odor. The developing trend of this method in forensic sciencefield was discussesd. This can provide some help for forensic science drug analysis, trace evidence and handling criminal cases.%综述国内外固相微萃取技术在法庭科学领域中毒物、毒品和微量物证(炸药残留物、助燃剂残留物、人体气味)样品前处理及分析中的应用,以及在火场助燃剂残留物及人体气味鉴别方面的应用;对固相微萃取技术在法庭科学领域中的发展方向进行了展望。可以对法庭科学领域毒物毒品、微量物的相关研究和侦查办案提供参考。

  9. Prosthetic Hand Technology-Phase II

    Science.gov (United States)

    2013-02-01

    Induction of DNA double-strand breaks by 157Gd neutron capture. Pigment Cell Res 1989;2:330-332. 51. Tokumitsu H, Ichikawa H, Fukumori Y. Chitosan...transformation affects the mobility and toxicity of the element. Elements can come from naturally-occurring processes such as volcanoes, water, bacterial ...of Cr. It is also used in dyes and pigments , as a gasoline additive, and in the tanning of leather. The pathophysiological role of Cr has not

  10. Technology Assessment of Advanced Composites. Phase 1

    Science.gov (United States)

    1978-03-01

    Inter-agency funding of pilot demonstration programs for beneficial applications of composites , with a parallel aggressive publication program; such...Letter SUBTECT Composites applications to automobiles Low cost hybrid composites in rotating machinery Sporting goods applications of composites Analysis

  11. Photovoltaic Manufacturing Technology, Phase 1, Final report

    Energy Technology Data Exchange (ETDEWEB)

    Easoz, J.R.; Herlocher, R.H. (Westinghouse Electric Corp., Pittsburgh, PA (United States))

    1991-12-01

    This report examines the cost-effective manufacture of dendritic-web-based photovoltaic modules. It explains how process changes can increase production and reduce manufacturing costs. Long-range benefits of these improved processes are also discussed. Problems are identified that could impede increasing production and reducing costs; approaches to solve these problems are presented. These approaches involve web growth throughput, cell efficiency, process yield, silicon use, process control, automation, and module efficiency. Also discussed are the benefits of bifacial module design, unique to the dendritic web process.

  12. Smart Prosthetic Hand Technology - Phase 2

    Science.gov (United States)

    2011-05-01

    plasticity of the motor and sensory cortex area in brains based on the variations in the phantom upper limb . 3. Genetic Algorithm: Marcos et al. [54...include loss of sensation or pain in limbs , adverse effects on digestion, decreased sexual response, and urinary tract infection. Half of the foot...design of our in-vitro model will ultimately improve the design and construct a functional and biocompatible artificial limb . 15. SUBJECT TERMS

  13. Installation Restoration Program. Phase 1: Records Search, Williams AFB, Arizona

    Science.gov (United States)

    1984-02-01

    Initial Assess- ment/Records Search; Phase II, Confirmation and Quantification ; Phase III, Technology Base Development; and Phase IV, Operations /Remedial...Search Phase II - Confirmation and Quantification Phase III - Technology Base Development Phase IV - Operations/Remedial Actions Engineering-Science (ES... Alkaloid Avi trol Gopher Getter Pivalyl • New chemicals in use. Will be included in 1984 Pest Management Plan. Note: All chemicals applied by contractors

  14. Solid phase transformations

    CERN Document Server

    Čermák, J

    2008-01-01

    This special-topic book, devoted to ""Solid Phase Transformations"" , covers a broad range of phenomena which are of importance in a number of technological processes. Most commercial alloys undergo thermal treatment after casting, with the aim of imparting desired compositions and/or optimal morphologies to the component phases. In spite of the fact that the topic has lain at the center of physical metallurgy for a long time, there are numerous aspects which are wide open to potential investigative breakthroughs. Materials with new structures also stimulate research in the field, as well as n

  15. CHP Technologies

    Science.gov (United States)

    Learn about CHP technologies, including reciprocating engines, combustion turbines, steam turbines, microturbines, fuel cells, and waste heat to power. Access the Catalog of CHP Technologies and the Biomass CHP Catalog of Technologies.

  16. Assistive Technology

    Science.gov (United States)

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

  17. Braided Composite Technologies for Rotorcraft Structures Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Phase 2 effort will be used to advance the material and design technologies that were explored in the Phase 1 study of hybrid gears. In this hybrid approach, the...

  18. Technology sourcing over the technology life cycle: A study about the moderating effect of the technology life cycle on the relation between technology sourcing and firm performance

    NARCIS (Netherlands)

    Stolwijk, C.C.M.

    2012-01-01

    How do external and internal technology sourcing influence the innovative and market performance of firms over the technology life-cycle? The impact of technology sourcing on firm performance during different phases of the technology life cycle represents a gap in academic literature. Practically, i

  19. Technology sourcing over the technology life cycle: A study about the moderating effect of the technology life cycle on the relation between technology sourcing and firm performance

    NARCIS (Netherlands)

    Stolwijk, C.C.M.

    2012-01-01

    How do external and internal technology sourcing influence the innovative and market performance of firms over the technology life-cycle? The impact of technology sourcing on firm performance during different phases of the technology life cycle represents a gap in academic literature. Practically,

  20. Research on microcapsules of phase change materials

    Institute of Scientific and Technical Information of China (English)

    DAI Xia; SHEN Xiaodong

    2006-01-01

    Microcapsule technology is a kind of technology wrapping the solid or liquid into minute-sized particles within the field of micrometer or millimeter with film forming materials. This thesis introduces microcapsule technology of phase change materials and its main functions and the structural composition, preparation methods and characterization technology of microcapsule of phase change materials. The microcapsule of phase change materials is small in size and its temperature remains unchanged during the process of heat absorption and heat release. It is of great value in research and application prospect due to these characteristics.

  1. Improved Oil Recovery from Upper Jurassic Smackover Carbonates through the Application of Advanced Technologies at Womack Hill Oil Field, Choctaw and Clarke Counties, Alabama, Eastern Gulf Coastal Plan (Phase II)

    Energy Technology Data Exchange (ETDEWEB)

    Ernest A. Mancini; Joe Benson; David Hilton; David Cate; Lewis Brown

    2006-05-29

    The principal research efforts for Phase II of the project were drilling an infill well strategically located in Section 13, T. 10 N., R. 2 W., of the Womack Hill Field, Choctaw and Clarke Counties, Alabama, and obtaining fresh core from the upper Smackover reservoir to test the feasibility of implementing an immobilized enzyme technology project in this field. The Turner Land and Timber Company 13-10 No. 1 well was successfully drilled and tested at a daily rate of 132 barrels of oil in Section 13. The well has produced 27,720 barrels of oil, and is currently producing at a rate of 60 barrels of oil per day. The 13-10 well confirmed the presence of 175,000 barrels of attic (undrained) oil in Section 13. As predicted from reservoir characterization, modeling and simulation, the top of the Smackover reservoir in the 13-10 well is structurally high to the tops of the Smackover in offsetting wells, and the 13-10 well has significantly more net pay than the offsetting wells. The drilling and testing of the 13-10 well showed that the eastern part of the field continues to have a strong water drive and that there is no need to implement a pressure maintenance program in this part of the Womack Hill Field at this time. The success achieved in drilling and testing the 13-10 infill well demonstrates the benefits of building a geologic model to target areas in mature fields that have the potential to contain undrained oil, thus increasing the productivity and profitability of these fields. Microbial cultures that grew at 90 C and converted ethanol to acid were recovered from fresh cuttings from the Smackover carbonate reservoir in an analogous field to the Womack Hill Field in southwest Alabama; however, no viable microorganisms were found in the Smackover cores recovered from the drilling of the 13-10 well in Womack Hill Field. Further evaluation is, therefore, required prior to implementing an immobilized enzyme technology project in the Womack Hill Field.

  2. 应用于宽带信号接收的多相滤波正交变换技术%Poly-phase filtering orthogonal transformation technology applied to broadband signal receiving

    Institute of Scientific and Technical Information of China (English)

    廖万友

    2014-01-01

    Since the signals processed by present mature simulation orthogonal transformation technology mostly belong to the narrow band signal,and Hilbert orthogonal transformation in the digital processing method is limited by bandwidth and can't be used in reception of the medium-frequency broadband signal,the method of using the poly-phase filtering orthogonal transfor-mation to realize the receiving front-end processing of the medium-frequency broadband signal is proposed in this paper. This method is good for solving the problem of digital frequency conversion’s orthogonal transformation of broadband received signals and is suitable for implementation on FPGA and real-time processing in engineering.%针对目前成熟的模拟正交变换处理的信号大多属于窄带信号,而数字处理方法中的希尔伯特正交变换受到带宽限制,不能很好地应用于中频宽带信号的接收。提出应用多相滤波正交变换的方法实现中频频段宽带信号的接收前端处理。该方法可很好地解决宽带接收信号的数字下变频正交变换的问题,并且适合在FPGA上实现,应用于工程实时处理。

  3. 全国组织干部学院(一期)节能技术及运行性能%Research on energy saving technology and operation performance of China Executive Leadership Academy (1st phase construction)

    Institute of Scientific and Technical Information of China (English)

    王嘉; 余琼; 马晓钧; 祁峰

    2015-01-01

    The project is awarded with a 3-star green building operation logo in 2014.Presents the adopted critical energy saving technology. In terms of passive energy saving design,presents the optimization design of building envelope,sunshine,natural ventilation and daylighting.In terms of renewable energy system design,applies the ground-source heat pump (GSHP)and solar collector system. The building environment is satisfactory in building operation phase.Analyses the actual operation energy consumption of the building.The results show that the electricity consumption index is 85.3 kWh/m2 for overall system and 36.5 kWh/m2 for HVAC system,which is at a lower level compared with complex type of office and restaurant buildings.%该建筑于2014年获得绿色建筑三星级运行标识,介绍了该建筑采用的节能关键技术。被动式节能设计方面,优化设计了围护结构、日照、自然通风及自然采光;可再生能源系统设计方面,采用地源热泵系统与太阳能集热系统。在建筑运行过程中,建筑环境满足使用要求。分析了建筑实际运行能耗,全年单位面积耗热量为85.3 kW·h/m2,空调系统耗电量指标为36.5 kW·h/m2,相比办公、居住综合型建筑,处于较节能水平。

  4. 超重力场强化固-液界面光催化反应过程%Intensification of Photocatalytic Degradation Process between Immobilized Photocalyst Menbrane and Liquid Phase Using High Gravity Technology

    Institute of Scientific and Technical Information of China (English)

    周文; 全学军; 项锦欣; 张莉; 叶长英; 丁明亮

    2011-01-01

    根据固定床光催化反应过程存在界面传质限制和激发光传递等问题,提出了超重力技术强化固-液界面光催化反应过程的方法.实验结果表明,在超重力强化固-液界面光催化反应过程中,存在一个临界液膜厚度,此值约130μm.当催化剂表面液膜厚度低于此值时,光催化过程效率得到大大提高.但当液膜厚度小于约60μm后,超重力强化光催化过程的效果就不太明显了.当催化剂表面上平均液膜厚度低于临界值时,光催化降解过程的速率常数与转盘转速和平均半径成正比,与进料流量和流体运动粘度的平方根成反比.提出了预测光催化降解速率常数的模型,且理论模型值与实验值吻合较好.研究结果可为固定床光催化反应器的设计和操作优化提供理论指导.%An intensification method for the photocatalytic degradation process between immobilized photocalyst membrane and liquid phase with the help of high gravity technology was presented, because the photocatalytic degradation occurring on solid-liquid interface was easily limited by the mass transfer between the two phases and by the thickness of liquid film on catalyst surface. The research results indicated that high gravity field could obviously intensify the photcatalytic degradation process. The intensification mechanism mainly included the thinning of the liquid film on photocatalyst surface and the improvement of the mass transfer between solid-liquid interfaces. It was found that there was a critical liquid film thickness which was about 130 μm. When the liquid film thickness was below the critical value, photocatalytic degradation efficiency was significantly enhanced with the help of high gravity field. Whereas the intensification effect of high gravity field became very weak when the thickness decreased to lower than 60 μm. When the averaged liquid film thickness was below the critical value, the photocatalytic degradation rate

  5. Phase transitions

    CERN Document Server

    Solé, Ricard V

    2011-01-01

    Phase transitions--changes between different states of organization in a complex system--have long helped to explain physics concepts, such as why water freezes into a solid or boils to become a gas. How might phase transitions shed light on important problems in biological and ecological complex systems? Exploring the origins and implications of sudden changes in nature and society, Phase Transitions examines different dynamical behaviors in a broad range of complex systems. Using a compelling set of examples, from gene networks and ant colonies to human language and the degradation o

  6. Technology Maturity is Technology Superiority

    Science.gov (United States)

    2008-09-09

    Dominant Air Power: Design For Tomorrow…Deliver Today 2 TECHNOLOGY MATURITY CONFERENCE • ONE DEFINITION OF MATURITY – GOOD JUDGEMENT COMES FROM...EXPERIENCE—EXPERIENCE COMES FROM BAD JUDGEMENT Dominant Air Power: Design For Tomorrow…Deliver Today 3 TECHNOLOGY MATURITY CONFERENCE • THIS WILL BE A...2008 TECHNOLOGY MATURITY CONFERENCE “ TECHNOLOGY MATURITY IS TECHNOLOGY SUPERIORITY” Aeronautical Systems Center Dr. Tom Christian ASC/EN, WPAFB OH

  7. Phase Behavior and Implications for Travel time Observables (PHASE 2)

    Science.gov (United States)

    2015-09-30

    Phase behavior and implications for travel - time observables (PHASE-2) Emmanuel Skarsoulis Foundation for Research and Technology Hellas...perturbation behavior of travel time observables due to sound-speed perturbations. OBJECTIVES The objective is to study the behavior of the wave-theoretic...for this work came from the results of previous studies, supported by ONR, suggesting that the perturbation behavior of different travel - time

  8. Imaging Spectral Technology Based Detection and Recognition of Boost-Phase Ballistic Target%基于成像光谱技术的主动段弹道目标检测与识别方法

    Institute of Scientific and Technical Information of China (English)

    吴建峰; 黄树彩; 康红霞; 钟宇; 于强; 赵炜

    2015-01-01

    弹道目标检测与识别问题是天基红外预警系统的核心难题之一。针对主动段弹道目标的检测和识别问题,分析了传统的基于空间和时间特征信息的弹道目标检测与识别方法。利用目标辐射空间与光谱的一致性,提出一种基于成像光谱技术的主动段弹道目标检测与识别方法,将空域目标检测和谱域目标识别两个环节进行联合处理。实验证明,该方法应用于复杂背景下低信噪比的红外弱小目标图像序列能得到较理想的结果,算法检测概率高、虚警概率低、具有较强的实时性。%Ballistic target detection and recognition is one of the core difficult problems of Space -Based Infrared System (SBIRS).Aiming at the problem of detection and recognition of boost-phase ballistic target,the traditional methods based on spatial and temporal characteristic information were analyzed,and the disadvantages of the methods were pointed out .According to the consistency of the target radiation in spatial dimension and spectral dimension,an integrated method for ballistic target detection and recognition was put forward based on imaging spectral technology,in which integrated treatment was made for target detection and recognition in spectral domain spectral domain .Experiment results show that this method can obtain good result toward low SNR infrared image sequence under complex background,the algorithm has high detection probability,low false-alarm probability and fine real-time performance .

  9. 中空纤维液相微萃取技术及其在食品有机污染物检测中的应用%Hollow fiber liquid phase microextraction technology and its application in the detection of organic pollutants in food

    Institute of Scientific and Technical Information of China (English)

    朱艳梅; 焦必宁

    2013-01-01

    As a kind of environmental friendly new sample preparation technology,hollow fiber liquid phase microextraction(HF-LPME),integrates extraction,purification and enrichment as a whole.This technology has the characteristic of simple device,low cost,easily combined with a variety of instruments spectrometry,low detection limit,higher recovery,and so on.The application of hollow fiber liquid phase microextraction technology is less in China.This paper reviewed the device,the pattern,the principle of hollow fiber liquid phase microextraction and its application in the detection of organic pollutants in food.%中空纤维液相微萃取作为一种环境友好的新型样品前处理技术,集萃取、净化、浓缩为一体,具有装置简单,成本低,易于与多种仪器联用,富集倍数、检测限低等特点.中空纤维液相微萃取技术在国内的应用还较少.本文综述了中空纤维液相微萃取的装置、模式、原理及在食品有机污染物检测中的应用.

  10. Globalization & technology

    DEFF Research Database (Denmark)

    Narula, Rajneesh

    Technology and globalization are interdependent processes. Globalization has a fundamental influence on the creation and diffusion of technology, which, in turn, affects the interdependence of firms and locations. This volume examines the international aspect of this interdependence at two levels...

  11. Living Technology

    DEFF Research Database (Denmark)

    2010-01-01

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

  12. Living Technology

    DEFF Research Database (Denmark)

    2010-01-01

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

  13. Mobile technology in clinical teaching.

    Science.gov (United States)

    Mackay, B J; Anderson, J; Harding, T

    2017-01-01

    Technology is having a profound effect on education in the 21st century and nurse educators are being challenged to integrate technological innovation to assist students in their learning. This paper reports a study on the introduction of smart mobile technology to support student learning in the clinical environment. In a climate of collaborative inquiry, clinical lecturers and two researchers from the same department carried out a project in three phases: formation, implementation and analysis. Following the formation phase, six clinical lecturers adopted iPads to support their clinical teaching (implementation phase). At this time they also kept reflective journals. In the analysis phase a thematic analysis of the data from the journals and from a focus group found both enabling and constraining factors influenced the use of iPads by clinical lecturers. The themes categorised as enablers were: resources and technology; and, management and technology support. Those identified as barriers or constraining factors were: clinical staff engagement; and lecturer experience with technology. Student engagement and learning, and connectivity were both enabling and constraining factors. This paper concludes that the use of a mobile device such as an iPad can enhance teaching in clinical settings but that in order for such devices to be successfully integrated into clinical teaching consideration needs to be given to professional development needs, adequate resourcing and technology support.

  14. Emerging Technologies

    OpenAIRE

    Salgar, S. M.

    2004-01-01

    Phenomenal advancements have taken place in the field of Information and communication technologies in the last decade. Spectacular and innovative changes are expected to take place in these fields in coming decade. Networking technologies are going through a sea change. This paper enumerates the likely networking technologies which are emerging, particularly WLANs. Most of the personal communication in the country will be through cellular/ mobile technologies, which are also covered in the p...

  15. Low Pass Filters with Linear Phase.

    Science.gov (United States)

    1985-12-12

    DISCUSSION OF RESULTS............................... 35 LIST OF ILLUSTRATIONS Figure page 1. Template applicable to single stage linear phase filter .................. 2...technology suggests examination of the low-pass lin- ear phase filter as a means of prefiltering such data before, or concurrently with, sam- pling. Today, a...stage low passlinear phase filter . Here, M is the number of "main poles". A linear phase design alsorequires a minimum overhead of two "corrector poles

  16. Soulful Technologies

    DEFF Research Database (Denmark)

    Fausing, Bent

    2010-01-01

    or anthropomorphism is important for the branding of new technology. Technology is seen as creating a techno-transcendence towards a more qualified humanity which is in contact with fundamental human values like intuition, vision, and sensing; all the qualities that technology, industrialization, and rationalization...

  17. Technology Tiers

    DEFF Research Database (Denmark)

    Karlsson, Christer

    2015-01-01

    A technology tier is a level in a product system: final product, system, subsystem, component, or part. As a concept, it contrasts traditional “vertical” special technologies (for example, mechanics and electronics) and focuses “horizontal” feature technologies such as product characteristics...

  18. Technology Tiers

    DEFF Research Database (Denmark)

    Karlsson, Christer

    2015-01-01

    A technology tier is a level in a product system: final product, system, subsystem, component, or part. As a concept, it contrasts traditional “vertical” special technologies (for example, mechanics and electronics) and focuses “horizontal” feature technologies such as product characteristics...

  19. Assistive Technologies

    Science.gov (United States)

    Auat Cheein, Fernando A., Ed.

    2012-01-01

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

  20. NASA/DOD Aerospace Knowledge Diffusion Research Project. Paper 54: The technical communications practices of engineering technology students: Results of the NASA/DOD Aerospace Knowledge Diffusion Research Project phase 3 student surveys

    Science.gov (United States)

    Pinelli, Thomas E.; England, Mark; Barclay, Rebecca O.; Kennedy, John M.

    1995-01-01

    Engineering technology programs are characterized by their focus on application and practice, and by their approximately 50/50 mix of theory and laboratory experience. Engineering technology graduates are employed across the technological spectrum and are often found in areas that deal with application, implementation, and production. Yet we know very little about the communications practices and information-use skills of engineering technology students. In this paper, we report selected results of an exploratory study of engineering technology students enrolled in three U.S. institutions of higher education. Data are presented for the following topics: career goals and aspirations; the importance of, receipt of, and helpfulness of communications and information-use skills instruction; collaborative writing; use of libraries; and the use of electronic (computer) networks.

  1. 非标件压力管道加厚弯头凹坑腐蚀超声相控阵检测的应用%The Application of Pits Corrosion of Nonstandard Pressure Pipeline Thickening Elbow Using Ultrasonic Phased Array Technology

    Institute of Scientific and Technical Information of China (English)

    康小伟; 何仁洋; 黄辉; 陈金忠

    2013-01-01

    本文应用超声波相控阵技术,对非标件的压力管道加厚弯头凹坑腐蚀减薄进行了检测。检测发现,加厚弯头因其内部凹槽腐蚀特殊性,普通超声波测厚无法完成,而相控阵技术因其探头晶片聚焦功能可实现对加厚弯头腐蚀凹坑的识别,相控阵检测图像信号清晰完整,最后对检测有异常信号的弯头进行解剖,发现相控阵检测的缺陷信号与非标件弯头凹坑缺陷相符合,为今后检测非标件压力管道加厚弯头内部凹坑缺陷提供了有效的技术支持。%In this paper, a nonstandard parts of pressure pipeline thickening elbow pits corrosion were detected by ultrasonic phased array technology. Ordinary ultrasonic testing can’t be completed because of thickening elbow’s internal pit corrosion particularity. However, phased array probe chip’s focus function can detect thickening elbow pits corrosion. Phased array detection’s picture and signal were clear and complete. Finally, elbows which phased array signal was abnormal were dissected. It found that phased array defect’s signal and the nonstandard parts elbow pit defects were same. Phased array technology provide effective technical support for internal pit defects of nonstandard parts pressure pipeline thickening elbow in the future.

  2. Sensemaking technologies

    DEFF Research Database (Denmark)

    Madsen, Charlotte Øland

    Research scope: The scope of the project is to study technological implementation processes by using Weick's sensemaking concept (Weick, 1995). The purpose of using a social constructivist approach to investigate technological implementation processes is to find out how new technologies transform......, Orlikowski 2000). Viewing the use of technology as a process of enactment opens up for investigating the social processes of interpreting new technology into the organisation (Orlikowski 2000). The scope of the PhD project will therefore be to gain a deeper understanding of how the enactment of new...... & Brass, 1990; Kling 1991; Orlikowski 2000). It also demonstrates that technology is a flexible variable adapted to the organisation's needs, culture, climate and management philosophy, thus leading to different uses and outcomes of the same technology in different organisations (Barley 1986; 1990...

  3. Appropriate Technology as Indian Technology.

    Science.gov (United States)

    Barry, Tom

    1979-01-01

    Describes the mounting enthusiasm of Indian communities for appropriate technology as an inexpensive means of providing much needed energy and job opportunities. Describes the development of several appropriate technology projects, and the goals and activities of groups involved in utilizing low scale solar technology for economic development on…

  4. Strategic business transformation through technology convergence

    DEFF Research Database (Denmark)

    Agarwal, Nivedita; Brem, Alexander

    2015-01-01

    -time intelligence. This paper presents the case of General Electric (GE) and studies the various transitional phases and transformation dimensions that GE is experiencing, to manage this technology convergence. The evaluation of GE's experience indicates that convergence-related business transformation is nonlinear......Technology adoption is crucial for an organisation to remain competitive in the marketplace. Traditionally, two technologies - operational technology (OT) and information technology (IT) - have operated independently from one another; however, technological advancements that businesses......, and that some dimensions and stages of transformation previously thought to be relevant may not be pertinent for successful business transformations through technology convergence....

  5. Strategic business transformation through technology convergence

    DEFF Research Database (Denmark)

    Agarwal, Nivedita; Brem, Alexander

    2015-01-01

    -time intelligence. This paper presents the case of General Electric (GE) and studies the various transitional phases and transformation dimensions that GE is experiencing, to manage this technology convergence. The evaluation of GE's experience indicates that convergence-related business transformation is nonlinear......Technology adoption is crucial for an organisation to remain competitive in the marketplace. Traditionally, two technologies - operational technology (OT) and information technology (IT) - have operated independently from one another; however, technological advancements that businesses......, and that some dimensions and stages of transformation previously thought to be relevant may not be pertinent for successful business transformations through technology convergence....

  6. SNMR pulse sequence phase cycling

    Science.gov (United States)

    Walsh, David O; Grunewald, Elliot D

    2013-11-12

    Technologies applicable to SNMR pulse sequence phase cycling are disclosed, including SNMR acquisition apparatus and methods, SNMR processing apparatus and methods, and combinations thereof. SNMR acquisition may include transmitting two or more SNMR pulse sequences and applying a phase shift to a pulse in at least one of the pulse sequences, according to any of a variety cycling techniques. SNMR processing may include combining SNMR from a plurality of pulse sequences comprising pulses of different phases, so that desired signals are preserved and indesired signals are canceled.

  7. Phase Vocoder

    Directory of Open Access Journals (Sweden)

    J.L. Flanagan

    2013-08-01

    Full Text Available A vocoder technique is described in which speech signals are represented by their short-time phase and amplitude spectra. A complete transmission system utilizing this approach is simulated on a digital computer. The encoding method leads to an economy in transmission bandwidth and to a means for time compression and expansion of speech signals.

  8. Industrialisation of polymer solar cells. Phase 2: Consolidation

    DEFF Research Database (Denmark)

    Lauritzen, Hanne; Gevorgyan, Suren; Frausig, Jesper

    The present report refers to the project “Industrialization of polymer solar cells – phase 2”. Both the project and this report build directly upon the prior phase 1 where the basic OPV technology, ProcessOne, was transferred to Mekoprint. This second phase focuses on an anchoring of the transfer......The present report refers to the project “Industrialization of polymer solar cells – phase 2”. Both the project and this report build directly upon the prior phase 1 where the basic OPV technology, ProcessOne, was transferred to Mekoprint. This second phase focuses on an anchoring...... of the transferred technology in Mekoprint’s industrial environment and an anchoring of the technology as an attractive solution for low-demanding PV applications. This second phase is also concerned with DTU’s further development of the OPV technology towards DTU’s ultimate goal of qualifying OPV for large...

  9. Nanoscale phase change memory materials.

    Science.gov (United States)

    Caldwell, Marissa A; Jeyasingh, Rakesh Gnana David; Wong, H-S Philip; Milliron, Delia J

    2012-08-01

    Phase change memory materials store information through their reversible transitions between crystalline and amorphous states. For typical metal chalcogenide compounds, their phase transition properties directly impact critical memory characteristics and the manipulation of these is a major focus in the field. Here, we discuss recent work that explores the tuning of such properties by scaling the materials to nanoscale dimensions, including fabrication and synthetic strategies used to produce nanoscale phase change memory materials. The trends that emerge are relevant to understanding how such memory technologies will function as they scale to ever smaller dimensions and also suggest new approaches to designing materials for phase change applications. Finally, the challenges and opportunities raised by integrating nanoscale phase change materials into switching devices are discussed.

  10. Spinodal Theory: A Common Rupturing Mechanism in Spinodal Dewetting and Surface Directed Phase Separation (Some Technological Aspects: Spatial Correlations and the Significance of Dipole-Quadrupole Interaction in Spinodal Dewetting)

    National Research Council Canada - National Science Library

    Singh, Satya Pal

    2011-01-01

    ... inherent in the wetting forces. This paper deals with the technological aspects of the spinodal processes by giving a brief account of the theory and to correlate the two phenomena termed as spinodal dewetting of thin nanofilms...

  11. Experimental Blade Research - phase 2

    DEFF Research Database (Denmark)

    Eder, Martin Alexander; Branner, Kim; Berring, Peter

    This report is a summary of the results obtained in the project: Experimental Blade Research – phase 2 (EBR2). The project was supported by the Danish Energy Authority through the 2010 Energy Technology Development and Demonstration Program (EUDP 2010-II) and has journal no. 64011-0006. The project...

  12. Low Phase Noise Design Technology of Frequency Synthesizer at 1 Hz for Deep Space TT & C System%深空测控系统1 Hz低相噪频率合成技术

    Institute of Scientific and Technical Information of China (English)

    杜丹

    2015-01-01

    针对深空测控系统高精度测量对于信道附加相噪的要求,采用直接数字频率合成( DDS )正交调制方法设计频率综合器。通过巧妙的试验和外推方法,择优选取电压型鉴相器,在锁相环相噪模型的基础上,全面分析各部分相噪的贡献,综合设计环路带宽,有效控制附加相噪,实现低相噪频综器最理想的目标,即环路带内的相噪完全由参考决定,带外的相噪由压控振荡器( VCO)决定,并采用两源互比的方法完成1 Hz极低相位噪声的测试,测试结果为-73 dBc/Hz,与设计结果完全一致。该方法对于测控站极低相噪的设计具有一定参考价值。%For the additional phase noise requirements on channels in deep space TT&C system with high ac-curacy measurement,a frequency synthesizer is designed using direct digital synthesizing(DDS) quadrature modulation. A voltage-type phase discriminator is selected by smart test and extrapolation method. Based on phase noise model of phase locked loop,contributions from all parts of phase noise are analyzed. So the idea-lest performance of frequency synthesizer with low phase noise,i. e. loop in-band phase noise is depended on reference frequency,and out-band phase noise is determined by voltage-controlled oscillator(VCO),is implemented by loop bandwidth integrated design and efficient additional phase noise control. The 1 Hz low phase noise is tested through comparing two sources and it is-73 dBc/Hz,which is consistent with design re-sult. This method is valuable to low phase noise design in deep space TT&C ground station.

  13. Low Cost Phased Array Antenna System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A program is proposed to research the applicability of a unique phased array technology, dubbed FlexScan, to S-band and Ku-band communications links between...

  14. Sensemaking technologies

    DEFF Research Database (Denmark)

    Madsen, Charlotte Øland

    & Brass, 1990; Kling 1991; Orlikowski 2000). It also demonstrates that technology is a flexible variable adapted to the organisation's needs, culture, climate and management philosophy, thus leading to different uses and outcomes of the same technology in different organisations (Barley 1986; 1990......, Orlikowski 2000). Viewing the use of technology as a process of enactment opens up for investigating the social processes of interpreting new technology into the organisation (Orlikowski 2000). The scope of the PhD project will therefore be to gain a deeper understanding of how the enactment of new...

  15. Chemistry Technology

    Data.gov (United States)

    Federal Laboratory Consortium — Chemistry technology experts at NCATS engage in a variety of innovative translational research activities, including:Design of bioactive small molecules.Development...

  16. Industry-Oriented Competency Requirements for Mechatronics Technology in Taiwan

    Science.gov (United States)

    Shyr, Wen-Jye

    2012-01-01

    This study employed a three-phase empirical method to identify competency indicators for mechatronics technology according to industry-oriented criteria. In Phase I, a list of required competencies was compiled using Behavioral Event Interviews (BEI) with three engineers specializing in the field of mechatronics technology. In Phase II, the Delphi…

  17. Review: Acute phase reaction and acute phase proteins

    Institute of Scientific and Technical Information of China (English)

    GRUYS E.; TOUSSAINT M.J.M.; NIEWOLD T.A.; KOOPMANS S.J.

    2005-01-01

    A review of the systemic acute phase reaction with major cytokines involved, and the hepatic metabolic changes,negative and positive acute phase proteins (APPs) with function and associated pathology is given. It appears that APPs represent appropriate analytes for assessment of animal health. Whereas they represent non-specific markers as biological effect reactants,they can be used for assessing nutritional deficits and reactive processes, especially when positive and negative acute phase variables are combined in an index. When such acute phase index is applied to separate healthy animals from animals with some disease, much better results are obtained than with single analytes and statistically acceptable results for culling individual animals may be reached.Unfortunately at present no cheap, comprehensive and easy to use system is available for assessing various acute phase proteins in serum or blood samples at the same time. Protein microarray or fluid phase microchip technology may satisfy this need;and permit simultaneous analysis of numerous analytes in the same small volume sample and enable integration of information derived from systemic reactivity and nutrition with disease specific variables. Applying such technology may help to solve health problems in various countries not only in animal husbandry but also in human populations.

  18. Technology standards battles and networks during the technology life cycle: The battle between HD DVD and Blu-ray

    NARCIS (Netherlands)

    Den Hartigh, E.; Ortt, R.; Van de Kaa, G.; Stolwijk, C.

    2009-01-01

    In this article we explore the changes in the structure and composition of networks supporting technologies during the phases of the technology life cycle. We conceptualize the technology life cycle phases by integrating two existing frameworks of Ortt and Schoormans (2004) and Suarez (2004). Based

  19. Thermally activated technologies: Technology Roadmap

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2003-05-01

    The purpose of this Technology Roadmap is to outline a set of actions for government and industry to develop thermally activated technologies for converting America’s wasted heat resources into a reservoir of pollution-free energy for electric power, heating, cooling, refrigeration, and humidity control. Fuel flexibility is important. The actions also cover thermally activated technologies that use fossil fuels, biomass, and ultimately hydrogen, along with waste heat.

  20. Thermally activated technologies: Technology Roadmap

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2003-05-01

    The purpose of this Technology Roadmap is to outline a set of actions for government and industry to develop thermally activated technologies for converting America’s wasted heat resources into a reservoir of pollution-free energy for electric power, heating, cooling, refrigeration, and humidity control. Fuel flexibility is important. The actions also cover thermally activated technologies that use fossil fuels, biomass, and ultimately hydrogen, along with waste heat.

  1. Plastics Technology.

    Science.gov (United States)

    Barker, Tommy G.

    This curriculum guide is designed to assist junior high schools industrial arts teachers in planning new courses and revising existing courses in plastics technology. Addressed in the individual units of the guide are the following topics: introduction to production technology; history and development of plastics; safety; youth leadership,…

  2. Lasers technology

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-07-01

    The Lasers Technology Program of IPEN is committed to the development of new lasers based on the research of optical materials and new technologies, as well to laser applications in several areas: Nuclear, Medicine, Dentistry, Industry, Environment and Advanced Research. The Program is basically divided into two main areas: Material and Laser Development and Laser Applications.

  3. Maritime Technology

    DEFF Research Database (Denmark)

    Sørensen, Herman

    1997-01-01

    Elementary introduction to the subject "Maritime Technology".The contents include drawings, sketches and references in English without any supplementary text.......Elementary introduction to the subject "Maritime Technology".The contents include drawings, sketches and references in English without any supplementary text....

  4. Maritime Technology

    DEFF Research Database (Denmark)

    Sørensen, Herman

    1997-01-01

    Elementary introduction to the subject "Maritime Technology".The contents include drawings, sketches and references in English without any supplementary text.......Elementary introduction to the subject "Maritime Technology".The contents include drawings, sketches and references in English without any supplementary text....

  5. Technology Push

    Science.gov (United States)

    Kennedy, Mike

    2008-01-01

    When students, teachers, administrators and others employed in education arrive at work every day on thousands of campuses across the nation, it should come as no surprise that at every step along the way, technology is there to greet them. Technological advancements in education, as well as in facilities operation and management, are not a…

  6. Sensemaking technology

    DEFF Research Database (Denmark)

    Madsen, Charlotte Øland

    Research objective: The object of the LOK research project is to gain a better understanding of the technological strategic processes in organisations by using the concept/metaphor of sensemaking. The project will investigate the technological strategies in organisations in order to gain a deeper...... understanding of the cognitive competencies and barriers towards implementing new technology in organisations. The research will therefore concentrate on researching the development process in the organisation's perception of the external environmental elements of customers, suppliers, competitors, internal...... and external technology and legislation and the internal environmental elements of structure, power relations and political arenas. All of these variables have influence on which/how technologies are implemented thus creating different outcomes all depending on the social dynamics that are triggered by changes...

  7. Sensemaking technology

    DEFF Research Database (Denmark)

    Madsen, Charlotte Øland

    Research objective: The object of the LOK research project is to gain a better understanding of the technological strategic processes in organisations by using the concept/metaphor of sensemaking. The project will investigate the technological strategies in organisations in order to gain a deeper...... understanding of the cognitive competencies and barriers towards implementing new technology in organisations. The research will therefore concentrate on researching the development process in the organisation's perception of the external environmental elements of customers, suppliers, competitors, internal...... and external technology and legislation and the internal environmental elements of structure, power relations and political arenas. All of these variables have influence on which/how technologies are implemented thus creating different outcomes all depending on the social dynamics that are triggered by changes...

  8. Technology collaboration

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, Jacob [Halliburton (Brazil)

    2011-07-01

    The aim of this paper is to present Halliburton's Brazilian technology center. Halliburton has technology centers in the United States, Saudi Arabia, India, Singapore and Brazil, all of which aim at delivering accelerated innovation in the oil sector. The technology centers engage in research and development activities with the help of various universities and in collaboration with the customer or supplier. The Halliburton Brazil technology center provides its customers with timely research and development solutions for enhancing recovery and mitigating reservoir uncertainty; they are specialized in finding solutions for pre- and post-salt carbonate drilling and in the enhancement of production from mature fields. This presentation showcased the work carried out by the Halliburton Brazil technology center to help customers develop their deepwater field activities.

  9. NDE Technology Development Program for Non-Visual Volumetric Inspection Technology; Sensor Effectiveness Testing Report

    Energy Technology Data Exchange (ETDEWEB)

    Moran, Traci L.; Larche, Michael R.; Denslow, Kayte M.; Glass, Samuel W.

    2017-08-31

    The Pacific Northwest National Laboratory (PNNL) located in Richland, Washington, hosted and administered Sensor Effectiveness Testing that allowed four different participants to demonstrate the NDE volumetric inspection technologies that were previously demonstrated during the Technology Screening session. This document provides a Sensor Effectiveness Testing report for the final part of Phase I of a three-phase NDE Technology Development Program designed to identify and mature a system or set of non-visual volumetric NDE technologies for Hanford DST primary liner bottom inspection. Phase I of the program will baseline the performance of current or emerging non-visual volumetric NDE technologies for their ability to detect and characterize primary liner bottom flaws, and identify candidate technologies for adaptation and maturation for Phase II of the program.

  10. Israel’s Technology Sector

    Science.gov (United States)

    2008-11-01

    Policy 33, no. 1 (February 2006): 33–46 (via EBSCO ). 95 Gil Avnimelech and Morris Teubal, “Evolutionary Innovation and Technology Policy: A Four-Phase...expanding in Israel. This is particularly true for new programs focusing on biotechnology.175 Together, Israel’s academic institutions host more than...accommodate the long lead times of product development in biotech by hosting biotech projects for longer periods than are available in general technology

  11. 三相泡沫防灭火新技术在峻德煤矿采空区灭火中的应用%Application of Three-phase Foam for Fire Extinguishing Technology in Junde Coal Mine Goal Outfire

    Institute of Scientific and Technical Information of China (English)

    李祥武

    2011-01-01

    Top-caving coal process is 2 to 5 times larger than layer mining with slow promoting, long-term floating coal gob in the combustion zone, fire prevention and control work is very difficult, three-phase foam for fire extinguishing technology is put forward and successful experiences of three-phase foam fire-fighting is introduced in the open area.%分析综采放顶煤工艺的采空区比分层开采的采空区大2~5倍,推进速度慢,采空区浮煤长期处于自燃带内,防灭火工作难度很大,提出采用三项泡沫防灭火新技术进行防灭火工作,介绍了利用三相泡沫开区灭火的成功经验.

  12. Ergonomics technology

    Science.gov (United States)

    Jones, W. L.

    1977-01-01

    Major areas of research and development in ergonomics technology for space environments are discussed. Attention is given to possible applications of the technology developed by NASA in industrial settings. A group of mass spectrometers for gas analysis capable of fully automatic operation has been developed for atmosphere control on spacecraft; a version for industrial use has been constructed. Advances have been made in personal cooling technology, remote monitoring of medical information, and aerosol particle control. Experience gained by NASA during the design and development of portable life support units has recently been applied to improve breathing equipment used by fire fighters.

  13. 配电变压器三相不平衡技术分析与管理措施研究%Analysis of Three Phase Unbalanced Technology of Distribution Transformer and Management Measures

    Institute of Scientific and Technical Information of China (English)

    李超英; 李宝贤; 王瑞琪

    2011-01-01

    配电变压器的三相不平衡运行是不可避免的,防止配电变压器三相不平衡运行是节能、提高电能质量的手段之一.本文分析造成配电变压器三相不平衡运行的原因,对配电变压器三相不平衡产生的影响进行了技术分析,并在此基础上,提出了相应的防止变压器三相不平衡的管理措施.%Three phase unbalanced operation of distribution transformer is unavoidable.Preventing Three phase unbalanced operation of distribution transformer is an important method of energy saving and improving power quality.The reason and effect of Three phase unbalanced operation of distribution transformer is analyzed.And practices of preventing three phase unbalanced operation of distribution transformer is proposed.

  14. A Technology Assessment of Personal Computers. Vol. II: Personal Computer Technology, Users, and Uses.

    Science.gov (United States)

    Nilles, Jack M.

    This volume reports on the initial phase of a technology assessment of personal computers. First, technological developments that will influence the rate of diffusion of personal computer technology among the general populace are examined. Then the probable market for personal computers is estimated and analyzed on a functional basis, segregating…

  15. Classifying the Quantum Phases of Matter

    Science.gov (United States)

    2015-01-01

    2013), arXiv:1305.2176. [10] J. Haah, Lattice quantum codes and exotic topological phases of matter , arXiv:1305.6973. [11[ M. Hastings and S...CLASSIFYING THE QUANTUM PHASES OF MATTER CALIFORNIA INSTITUTE OF TECHNOLOGY JANUARY 2015 FINAL TECHNICAL REPORT...REPORT 3. DATES COVERED (From - To) JAN 2012 – AUG 2014 4. TITLE AND SUBTITLE CLASSIFYING THE QUANTUM PHASES OF MATTER 5a. CONTRACT NUMBER FA8750-12-2

  16. All Digital Phase-Locked Loop

    OpenAIRE

    Marijan Jurgo

    2013-01-01

    The paper reviews working principles of phase-locked loop and drawbacks of classical PLL structure in nanometric technologies. It is proposed to replace the classical structure by all-digital phase-locked loop structure. Authors described the main blocks of all-digital phase-locked loop (time to digital converter and digitally controlled oscillator) and overviewed the quantization noise arising in these blocks as well as its minimization strategies. The calculated inverter delay in 65 nm CMOS...

  17. Application of 3D stereo visualization technology in teaching of multi-component phase diag rams%3D立体显示技术在多元相图教学中的应用

    Institute of Scientific and Technical Information of China (English)

    康进武; 汪有浪; 熊守美

    2014-01-01

    The phase diagram is one of the key courses in materials science and engineering .Multi-component phase diagrams are of complex spatial shape ,which can be hard to be understood .This article constructs the space phase diagrams of binary pressure-temperature-composition (P-T-X) systems ,typical ternary systems and some quaternary systems by Solidworks ,and then all of these phase diagrams are converted to a 3D stereo visualization system .Therefore ,these phase diagrams can be illustrated by wireframe ,surface ,3D solid body or their mixture .Isotherms and isopleths can be realized by dynamic sectioning of the space phase diagrams . All of these can be displayed by the typical commercial devices ,such as electronic shutter devices ,polarization system and color anaglyph systems such as red-cyan glasses .This system has been used in the class teaching of multi-component phase diagram and it is proved to be very successful .%相图是材料科学与工程学科的基础之一,其中多元相图为空间结构,形状复杂、难以理解,是教学中的难点。采用Solidworks建立了二元压力-温度-成分(PTX)、三元和部分四元空间相图模型,并采用3D立体显示技术进行处理,建立了多元相图3D立体显示教学课件系统。该系统可以在3D立体显示环境下实现相图的线框、面和体及其混合的立体显示,可以进行剖切、旋转,实现等温面和多温面的动态变形立体显示,3D立体显示效果明显,可以在电子快门式、偏光式和红蓝模式下使用,适合课堂教学,已经在相图教学中获得了良好的效果。

  18. Technology Innovation

    Science.gov (United States)

    EPA produces innovative technologies and facilitates their creation in line with the Agency mission to create products such as the stormwater calculator, remote sensing, innovation clusters, and low-cost air sensors.

  19. Banana technology

    Science.gov (United States)

    van Amstel, Willem D.; Schellekens, E. P. A.; Walravens, C.; Wijlaars, A. P. F.

    1999-09-01

    With 'Banana Technology' an unconventional hybrid fabrication technology is indicated for the production of very large parabolic and hyperbolic cylindrical mirror systems. The banana technology uses elastic bending of very large and thin glass substrates and fixation onto NC milled metal moulds. This technology has matured during the last twenty years for the manufacturing of large telecentric flat-bed scanners. Two construction types, called 'internal banana' and 'external banana; are presented. Optical figure quality requirements in terms of slope and curvature deviations are discussed. Measurements of these optical specifications by means of a 'finishing rod' type of scanning deflectometer or slope tester are presented. Design constraints for bending glass and the advantages of a new process will be discussed.

  20. Exploration technology

    Energy Technology Data Exchange (ETDEWEB)

    Roennevik, H.C. [Saga Petroleum A/S, Forus (Norway)

    1996-12-31

    The paper evaluates exploration technology. Topics discussed are: Visions; the subsurface challenge; the creative tension; the exploration process; seismic; geology; organic geochemistry; seismic resolution; integration; drilling; value creation. 4 refs., 22 figs.

  1. UPLIFTING TECHNOLOGY

    National Research Council Canada - National Science Library

    Thomas K Grose

    2015-01-01

      Inspired by Star Trek turbolifts, German engineering firm ThyssenKrupp says it's ready to replace cables and pulleys using maglev, or magnetic levitation technology, that enables the world's fastest...

  2. Videodisc technology

    Energy Technology Data Exchange (ETDEWEB)

    Marsh, F.E. Jr.

    1981-03-01

    An overview of the technology of videodiscs is given. The emphasis is on systems that use reflection or transmission of laser light. Possible use of videodiscs for storage of bibliographic information is considered. 6 figures, 3 tables. (RWR)

  3. Fabrication Technology

    Energy Technology Data Exchange (ETDEWEB)

    Blaedel, K.L.

    1993-03-01

    The mission of the Fabrication Technology thrust area is to have an adequate base of manufacturing technology, not necessarily resident at Lawrence Livermore National Laboratory (LLNL), to conduct the future business of LLNL. The specific goals continue to be to (1) develop an understanding of fundamental fabrication processes; (2) construct general purpose process models that will have wide applicability; (3) document findings and models in journals; (4) transfer technology to LLNL programs, industry, and colleagues; and (5) develop continuing relationships with the industrial and academic communities to advance the collective understanding of fabrication processes. The strategy to ensure success is changing. For technologies in which they are expert and which will continue to be of future importance to LLNL, they can often attract outside resources both to maintain their expertise by applying it to a specific problem and to help fund further development. A popular vehicle to fund such work is the Cooperative Research and Development Agreement with industry. For technologies needing development because of their future critical importance and in which they are not expert, they use internal funding sources. These latter are the topics of the thrust area. Three FY-92 funded projects are discussed in this section. Each project clearly moves the Fabrication Technology thrust area towards the goals outlined above. They have also continued their membership in the North Carolina State University Precision Engineering Center, a multidisciplinary research and graduate program established to provide the new technologies needed by high-technology institutions in the US. As members, they have access to and use of the results of their research projects, many of which parallel the precision engineering efforts at LLNL.

  4. Cognitive technologies

    CERN Document Server

    Mello, Alan; Figueiredo, Fabrício; Figueiredo, Rafael

    2017-01-01

    This book focuses on the next generation optical networks as well as mobile communication technologies. The reader will find chapters on Cognitive Optical Network, 5G Cognitive Wireless, LTE, Data Analysis and Natural Language Processing. It also presents a comprehensive view of the enhancements and requirements foreseen for Machine Type Communication. Moreover, some data analysis techniques and Brazilian Portuguese natural language processing technologies are also described here. .

  5. Lasers technology

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2014-07-01

    The Laser Technology Program of IPEN is developed by the Center for Lasers and Applications (CLA) and is committed to the development of new lasers based on the research of new optical materials and new resonator technologies. Laser applications and research occur within several areas such as Nuclear, Medicine, Dentistry, Industry, Environment and Advanced Research. Additional goals of the Program are human resource development and innovation, in association with Brazilian Universities and commercial partners.

  6. Fabrication Technology

    Energy Technology Data Exchange (ETDEWEB)

    Blaedel, K.L.

    1993-03-01

    The mission of the Fabrication Technology thrust area is to have an adequate base of manufacturing technology, not necessarily resident at Lawrence Livermore National Laboratory (LLNL), to conduct the future business of LLNL. The specific goals continue to be to (1) develop an understanding of fundamental fabrication processes; (2) construct general purpose process models that will have wide applicability; (3) document findings and models in journals; (4) transfer technology to LLNL programs, industry, and colleagues; and (5) develop continuing relationships with the industrial and academic communities to advance the collective understanding of fabrication processes. The strategy to ensure success is changing. For technologies in which they are expert and which will continue to be of future importance to LLNL, they can often attract outside resources both to maintain their expertise by applying it to a specific problem and to help fund further development. A popular vehicle to fund such work is the Cooperative Research and Development Agreement with industry. For technologies needing development because of their future critical importance and in which they are not expert, they use internal funding sources. These latter are the topics of the thrust area. Three FY-92 funded projects are discussed in this section. Each project clearly moves the Fabrication Technology thrust area towards the goals outlined above. They have also continued their membership in the North Carolina State University Precision Engineering Center, a multidisciplinary research and graduate program established to provide the new technologies needed by high-technology institutions in the US. As members, they have access to and use of the results of their research projects, many of which parallel the precision engineering efforts at LLNL.

  7. Technology and technology transfer: some basic issues

    OpenAIRE

    Shamsavari, Ali; Adikibi, Owen; Taha, Yasser

    2002-01-01

    This paper addresses various issues relating to technology and transfer of technology such as technology and society, technology and science, channels and models of technology transfer, the role of multinational companies in transfer of technology, etc. The ultimate objective is to pose the question of relevance of some existing models and ideas like technological independence in an increasingly globalised world economy.

  8. Mineral-PET Kimberlite sorting by nuclear-medical technology

    CERN Document Server

    Ballestrero, S; Cafferty, L; Caveney, R; Connell, SH; Cook, M; Dalton, M; Gopal, H; Ives, N; Lee, C A; Mampe, W; Phoku, M; Roodt, A; Sibande, W; Sellschop, J P F; Topkin, J; Unwucholaa, D A

    2010-01-01

    A revolutionary new technology for diamond bearing rock sorting which has its roots in medical-nuclear physics has been taken through a substantial part of the R&D phase. This has led to the construction of the technology demonstrator. Experiments using the technology demonstrator and experiments at a hospital have established the scientific and technological viability of the project.

  9. Innovative clean coal technology: 500 MW demonstration of advanced wall-fired combustion techniques for the reduction of nitrogen oxide (NOx) emissions from coal-fired boilers. Final report, Phases 1 - 3B

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-01-01

    This report presents the results of a U.S. Department of Energy (DOE) Innovative Clean Coal Technology (ICCT) project demonstrating advanced wall-fired combustion techniques for the reduction of nitrogen oxide (NOx) emissions from coal-fired boilers. The project was conducted at Georgia Power Company`s Plant Hammond Unit 4 located near Rome, Georgia. The technologies demonstrated at this site include Foster Wheeler Energy Corporation`s advanced overfire air system and Controlled Flow/Split Flame low NOx burner. The primary objective of the demonstration at Hammond Unit 4 was to determine the long-term effects of commercially available wall-fired low NOx combustion technologies on NOx emissions and boiler performance. Short-term tests of each technology were also performed to provide engineering information about emissions and performance trends. A target of achieving fifty percent NOx reduction using combustion modifications was established for the project. Short-term and long-term baseline testing was conducted in an {open_quotes}as-found{close_quotes} condition from November 1989 through March 1990. Following retrofit of the AOFA system during a four-week outage in spring 1990, the AOFA configuration was tested from August 1990 through March 1991. The FWEC CF/SF low NOx burners were then installed during a seven-week outage starting on March 8, 1991 and continuing to May 5, 1991. Following optimization of the LNBs and ancillary combustion equipment by FWEC personnel, LNB testing commenced during July 1991 and continued until January 1992. Testing in the LNB+AOFA configuration was completed during August 1993. This report provides documentation on the design criteria used in the performance of this project as it pertains to the scope involved with the low NOx burners and advanced overfire systems.

  10. 聚乙烯管道电熔焊接头的超声相控阵检测工艺优化%Phased Array Ultrasonic Technology Optimization for Electro-Fusion Joint of Polyethylene Pipe

    Institute of Scientific and Technical Information of China (English)

    郭伟灿; 施建峰; 侯东圣

    2015-01-01

    Electro-fusion welding is a widely-used method of connecting polyethylene (PE)pipe.Considering typical characteristics of PE and special structure of PE electro-fusion joint,a nondestructive testing method of phased array ultrasonic technique was presented and the focusing performances of phased array acoustic field were analyzed.Following acoustic field simulation by CIVA software, the optimization analysis was conducted to determine the optimal phased array parameters,including array elements,array element size,deflection angle, ultrasonic frequency,etc.Special phased array probe was manufactured with the optimal parameters obtained previously,and experiments were performed to prove the effectiveness of the proposed technique.Results indicated that this technique could effectively detect typical defects in PE electro-fusion joints and ensure the safety of PE pipeline.%电熔焊接是聚乙烯管道的主要连接方式之一,针对聚乙烯电熔焊接头的超声相控阵检测,利用CIVA软件对相控阵声场进行建模仿真,优化分析相控阵参数;根据优化后的相控阵参数研制探头,并进行聚乙烯管道电熔接头的检测试验。试验表明,研制的探头在合适的工艺参数条件下可以有效地检测出电熔接头的典型缺陷,提高了聚乙烯管道系统的本质安全性。

  11. Phase change stores heat. Use of new fluids as a heat transfer medium in air conditioning and refrigeration technology; Phasenuebergang speichert Waerme. Neue Fluide als Waermetraeger in der Klima- und Kaeltetechnologie einsetzen

    Energy Technology Data Exchange (ETDEWEB)

    Hirn, Gerhard

    2012-07-01

    When it comes to transporting heat from boilers to heating surfaces or supplying cooling energy to cooling ceilings, water has proved to be an excellent heat transfer medium. However, in some application areas it is now facing competition: various research groups are working on heat transfer fluids that have at least double the energy density. Phase change materials such as paraffin, which are finely distributed in water, store heat when they melt and release it again when they solidify.

  12. Phase Change Fabrics Control Temperature

    Science.gov (United States)

    2009-01-01

    Originally featured in Spinoff in 1997, Outlast Technologies Inc. (formerly Gateway Technologies Inc.) has built its entire product line on microencapsulated phase change materials, developed in Small Business Innovation Research (SBIR) contracts with Johnson Space Center after initial development for the U.S. Air Force. The Boulder, Colorado-based company acquired the exclusive patent rights and now integrates these materials into textiles or onto finished apparel, providing temperature regulation in bedding materials and a full line of apparel for both ordinary and extreme conditions.

  13. 9th Annual Science and Engineering Technology Conference

    Science.gov (United States)

    2008-04-17

    O’Neill, PhD, NAE LTG USA/CTO LMC (ret) Session III: Development and Insertion of Innovative Technologies into Naval Systems · Technology...end-to-end value stream map. Technology Development ( TD ) Phase. 6 Capability to produce a prototype system or subsystem in a production relevant...key supply chain elements identified. Industrial Capabilities Assessment (ICA) for MS B completed. Technology Development ( TD ) phase leading to a

  14. Technology cycles and technology revolutions

    Energy Technology Data Exchange (ETDEWEB)

    Paganetto, Luigi; Scandizzo, Pasquale Lucio

    2010-09-15

    Technological cycles have been characterized as the basis of long and continuous periods economic growth through sustained changes in total factor productivity. While this hypothesis is in part consistent with several theories of growth, the sheer magnitude and length of the economic revolutions experienced by humankind seems to indicate surmise that more attention should be given to the origin of major technological and economic changes, with reference to one crucial question: role of production and use of energy in economic development.

  15. RSP Tooling Technology

    Energy Technology Data Exchange (ETDEWEB)

    None

    2001-11-20

    RSP Tooling{trademark} is a spray forming technology tailored for producing molds and dies. The approach combines rapid solidification processing and net-shape materials processing in a single step. The general concept involves converting a mold design described by a CAD file to a tooling master using a suitable rapid prototyping (RP) technology such as stereolithography. A pattern transfer is made to a castable ceramic, typically alumina or fused silica (Figure 1). This is followed by spray forming a thick deposit of a tooling alloy on the pattern to capture the desired shape, surface texture, and detail. The resultant metal block is cooled to room temperature and separated from the pattern. The deposit's exterior walls are machined square, allowing it to be used as an insert in a standard mold base. The overall turnaround time for tooling is about 3 to 5 days, starting with a master. Molds and dies produced in this way have been used in high volume production runs in plastic injection molding and die casting. A Cooperative Research and Development Agreement (CRADA) between the Idaho National Engineering and Environmental Laboratory (INEEL) and Grupo Vitro has been established to evaluate the feasibility of using RSP Tooling technology for producing molds and dies of interest to Vitro. This report summarizes results from Phase I of this agreement, and describes work scope and budget for Phase I1 activities. The main objective in Phase I was to demonstrate the feasibility of applying the Rapid Solidification Process (RSP) Tooling method to produce molds for the manufacture of glass and other components of interest to Vitro. This objective was successfully achieved.

  16. RSP Tooling Technology

    Energy Technology Data Exchange (ETDEWEB)

    None

    2001-11-20

    RSP Tooling{trademark} is a spray forming technology tailored for producing molds and dies. The approach combines rapid solidification processing and net-shape materials processing in a single step. The general concept involves converting a mold design described by a CAD file to a tooling master using a suitable rapid prototyping (RP) technology such as stereolithography. A pattern transfer is made to a castable ceramic, typically alumina or fused silica (Figure 1). This is followed by spray forming a thick deposit of a tooling alloy on the pattern to capture the desired shape, surface texture, and detail. The resultant metal block is cooled to room temperature and separated from the pattern. The deposit's exterior walls are machined square, allowing it to be used as an insert in a standard mold base. The overall turnaround time for tooling is about 3 to 5 days, starting with a master. Molds and dies produced in this way have been used in high volume production runs in plastic injection molding and die casting. A Cooperative Research and Development Agreement (CRADA) between the Idaho National Engineering and Environmental Laboratory (INEEL) and Grupo Vitro has been established to evaluate the feasibility of using RSP Tooling technology for producing molds and dies of interest to Vitro. This report summarizes results from Phase I of this agreement, and describes work scope and budget for Phase I1 activities. The main objective in Phase I was to demonstrate the feasibility of applying the Rapid Solidification Process (RSP) Tooling method to produce molds for the manufacture of glass and other components of interest to Vitro. This objective was successfully achieved.

  17. Modern steelmaking technologies

    Science.gov (United States)

    Sinel'nikov, V. A.; Filippov, G. A.; Lavrov, A. S.; Gunenkov, V. Yu.

    2016-06-01

    Based on our experimental results, we propose the following low-cost technologies in the field of steelmaking for implementation: the use of briquettes, which are alternative to solid cast iron and scrap metal and contain scale and carbon-containing wastes, in the charges of electric furnaces and converters; microalloying of metal by nitride phases; modification of steel in a ladle by SiCa + Ba master alloys; and the application of daisy-chain blowing of the metal in a ladle (small-bubble conditions). The efficiency of these technologies for melting in electric furnaces and secondary metallurgy is supported. It is shown that electromagnetic mixing of metal in combination with the optimum conditions of soft reduction of a slab should be used in continuous casting to form an internal structure in a slab at the level of the first class on the Mannesmann scale.

  18. Direct conversion technology

    Energy Technology Data Exchange (ETDEWEB)

    Massier, P.F.; Back, L.H.; Ryan, M.A.; Fabris, G.

    1992-01-07

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. This report contains progress of research on the Alkali Metal Thermal-to-Electric Converter (AMTEC) and on the Two-Phase Liquid-Metal MHD Electrical Generator (LMMHD) for the period January 1, 1991 through December 31, 1991. Research on AMTEC and on LMMHD was initiated during October 1987. Reports prepared on previous occasions (Refs. 1--5) contain descriptive and performance discussions of the following direct conversion concepts: thermoelectric, pyroelectric, thermionic, thermophotovoltaic, thermoacoustic, thermomagnetic, thermoelastic (Nitionol heat engine); and also, more complete descriptive discussions of AMTEC and LMMHD systems.

  19. Knowledge Technologies

    CERN Document Server

    Milton, Nick

    2008-01-01

    Several technologies are emerging that provide new ways to capture, store, present and use knowledge. This book is the first to provide a comprehensive introduction to five of the most important of these technologies: Knowledge Engineering, Knowledge Based Engineering, Knowledge Webs, Ontologies and Semantic Webs. For each of these, answers are given to a number of key questions (What is it? How does it operate? How is a system developed? What can it be used for? What tools are available? What are the main issues?). The book is aimed at students, researchers and practitioners interested in Knowledge Management, Artificial Intelligence, Design Engineering and Web Technologies. During the 1990s, Nick worked at the University of Nottingham on the application of AI techniques to knowledge management and on various knowledge acquisition projects to develop expert systems for military applications. In 1999, he joined Epistemics where he worked on numerous knowledge projects and helped establish knowledge management...

  20. Persuasive Technology

    DEFF Research Database (Denmark)

    This book constitutes the proceedings of the 5th International Conference on Persuasive Technology, PERSUASIVE 2010, held in Copenhagen Denmark in June 2010. The 25 papers presented were carefully reviewed and selected from 80 submissions. In addition three keynote papers are included in this vol......This book constitutes the proceedings of the 5th International Conference on Persuasive Technology, PERSUASIVE 2010, held in Copenhagen Denmark in June 2010. The 25 papers presented were carefully reviewed and selected from 80 submissions. In addition three keynote papers are included...... in this volume. The topics covered are emotions and user experience, ambient persuasive systems, persuasive design, persuasion profiles, designing for health, psychology of persuasion, embodied and conversational agents, economic incentives, and future directions for persuasive technology....

  1. Seafood Technology

    DEFF Research Database (Denmark)

    Børresen, Torger

    This presentation will fill the total picture of this conference between fisheries and aquaculture, blue biotech and bioconservation, by considering the optimal processing technology of marine resources from the raw material until the seafood reaches the plate of the consumer. The situation today...... must be performed such that total traceability and authenticity of the final products can be presented on demand. The most important aspects to be considered within seafood technology today are safety, healthy products and high eating quality. Safety can be divided into microbiological safety...... and not presenting any safety risk per se. Seafood is healthy due to the omega-3 fatty acids and the nutritional value of vitamins, peptides and proteins. The processing technology must however be performed such that these valuable features are not lost during production. The same applies to the eating quality. Any...

  2. Persuasive Technology

    DEFF Research Database (Denmark)

    This book constitutes the proceedings of the 5th International Conference on Persuasive Technology, PERSUASIVE 2010, held in Copenhagen Denmark in June 2010. The 25 papers presented were carefully reviewed and selected from 80 submissions. In addition three keynote papers are included in this vol......This book constitutes the proceedings of the 5th International Conference on Persuasive Technology, PERSUASIVE 2010, held in Copenhagen Denmark in June 2010. The 25 papers presented were carefully reviewed and selected from 80 submissions. In addition three keynote papers are included...... in this volume. The topics covered are emotions and user experience, ambient persuasive systems, persuasive design, persuasion profiles, designing for health, psychology of persuasion, embodied and conversational agents, economic incentives, and future directions for persuasive technology....

  3. Prospects for Accelerator Technology

    Science.gov (United States)

    Todd, Alan

    2011-02-01

    Accelerator technology today is a greater than US$5 billion per annum business. Development of higher-performance technology with improved reliability that delivers reduced system size and life cycle cost is expected to significantly increase the total accelerator technology market and open up new application sales. Potential future directions are identified and pitfalls in new market penetration are considered. Both of the present big market segments, medical radiation therapy units and semiconductor ion implanters, are approaching the "maturity" phase of their product cycles, where incremental development rather than paradigm shifts is the norm, but they should continue to dominate commercial sales for some time. It is anticipated that large discovery-science accelerators will continue to provide a specialty market beset by the unpredictable cycles resulting from the scale of the projects themselves, coupled with external political and economic drivers. Although fraught with differing market entry difficulties, the security and environmental markets, together with new, as yet unrealized, industrial material processing applications, are expected to provide the bulk of future commercial accelerator technology growth.

  4. University Technology Transfer

    Directory of Open Access Journals (Sweden)

    Mike Cox

    2004-09-01

    Full Text Available This article describes the experiences and general observations of the author at Heriot-Watt University and concerns the transfer of university technology for the purposes of commercialisation. Full commercial exploitation of a university invention generally requires transferring that technology into the industrial arena, usually either by formation of a new company or licensing into an existing company. Commercialisation activities need to be carried out in unison with the prime activities of the university of research and teaching. Responsibility for commercialising university inventions generally rests with a specific group within the university, typically referred to as the technology transfer group. Each technology transfer should be considered individually and appropriate arrangements made for that particular invention. In general, this transfer process involves four stages: identification, evaluation, protection and exploitation. Considerations under these general headings are outlined from a university viewpoint. A phased approach is generally preferred where possible for the evaluation, protection and exploitation of an invention to balance risk with potential reward. Evaluation of the potential opportunity for a university invention involves essentially the same considerations as for an industrial invention. However, there are a range of commercial exploitation routes and potential deals so that only general guidelines can be given. Naturally, the final deal achieved is that which can be negotiated. The potential rewards for the university and inventor are both financial (via licensing income and equity realisation and non-financial.

  5. Three-phase Photovoltaic Systems

    DEFF Research Database (Denmark)

    Kerekes, Tamas; Sera, Dezso; Máthé, Lászlo

    2015-01-01

    the grid through a three-phase power electronic converter are now well on the way to becoming a major player in the power system in many countries. Therefore, this article gives an overview of photovoltaic systems with a focus on three-phase applications, presenting these both from a hardware point of view......Photovoltaic technology has experienced unprecedented growth in the last two decades, transforming from mainly off-grid niche generation to a major renewable energy technology, reaching approximately 180 GW of capacity worldwide at the end of 2014. Large photovoltaic power plants interfacing......, detailing the different photovoltaic inverter structures and topologies as well as discussing the different control layers within a grid-connected photovoltaic plant. Modulation schemes for various photovoltaic inverter topologies, grid synchronization, current control, active and reactive power control...

  6. Technology Transfer

    Science.gov (United States)

    Smith, Nanette R.

    1995-01-01

    The objective of this summer's work was to attempt to enhance Technology Application Group (TAG) ability to measure the outcomes of its efforts to transfer NASA technology. By reviewing existing literature, by explaining the economic principles involved in evaluating the economic impact of technology transfer, and by investigating the LaRC processes our William & Mary team has been able to lead this important discussion. In reviewing the existing literature, we identified many of the metrics that are currently being used in the area of technology transfer. Learning about the LaRC technology transfer processes and the metrics currently used to track the transfer process enabled us to compare other R&D facilities to LaRC. We discuss and diagram impacts of technology transfer in the short run and the long run. Significantly, it serves as the basis for analysis and provides guidance in thinking about what the measurement objectives ought to be. By focusing on the SBIR Program, valuable information regarding the strengths and weaknesses of this LaRC program are to be gained. A survey was developed to ask probing questions regarding SBIR contractors' experience with the program. Specifically we are interested in finding out whether the SBIR Program is accomplishing its mission, if the SBIR companies are providing the needed innovations specified by NASA and to what extent those innovations have led to commercial success. We also developed a survey to ask COTR's, who are NASA employees acting as technical advisors to the SBIR contractors, the same type of questions, evaluating the successes and problems with the SBIR Program as they see it. This survey was developed to be implemented interactively on computer. It is our hope that the statistical and econometric studies that can be done on the data collected from all of these sources will provide insight regarding the direction to take in developing systematic evaluations of programs like the SBIR Program so that they can

  7. 40 CFR 125.94 - How will requirements reflecting best technology available for minimizing adverse environmental...

    Science.gov (United States)

    2010-07-01

    ... technology available for minimizing adverse environmental impact be established for my Phase II existing... technology available to minimize adverse environmental impact for your facility in accordance with paragraphs... technology available for minimizing adverse environmental impact. This determination must be based...

  8. Options Study - Phase II

    Energy Technology Data Exchange (ETDEWEB)

    R. Wigeland; T. Taiwo; M. Todosow; W. Halsey; J. Gehin

    2010-09-01

    The Options Study has been conducted for the purpose of evaluating the potential of alternative integrated nuclear fuel cycle options to favorably address the issues associated with a continuing or expanding use of nuclear power in the United States. The study produced information that can be used to inform decisions identifying potential directions for research and development on such fuel cycle options. An integrated nuclear fuel cycle option is defined in this study as including all aspects of the entire nuclear fuel cycle, from obtaining natural resources for fuel to the ultimate disposal of used nuclear fuel (UNF) or radioactive wastes. Issues such as nuclear waste management, especially the increasing inventory of used nuclear fuel, the current uncertainty about used fuel disposal, and the risk of nuclear weapons proliferation have contributed to the reluctance to expand the use of nuclear power, even though it is recognized that nuclear power is a safe and reliable method of producing electricity. In this Options Study, current, evolutionary, and revolutionary nuclear energy options were all considered, including the use of uranium and thorium, and both once-through and recycle approaches. Available information has been collected and reviewed in order to evaluate the ability of an option to clearly address the challenges associated with the current implementation and potential expansion of commercial nuclear power in the United States. This Options Study is a comprehensive consideration and review of fuel cycle and technology options, including those for disposal, and is not constrained by any limitations that may be imposed by economics, technical maturity, past policy, or speculated future conditions. This Phase II report is intended to be used in conjunction with the Phase I report, and much information in that report is not repeated here, although some information has been updated to reflect recent developments. The focus in this Options Study was to

  9. Soulful Technologies

    DEFF Research Database (Denmark)

    Fausing, Bent

    2010-01-01

    Samsung introduced in 2008 a mobile phone called "Soul" made with a human touch and including itself a "magic touch". Through the analysis of a Nokia mobile phone TV-commercials I want to examine the function and form of digital technology in everyday images. The mobile phone and its digital came...... commercials and internet commercials for mobile phones from Nokia, or handheld computers, as Sony-Ericsson prefers to call them. Digital technology points towards a forgotten pre-human and not only post-human condition....

  10. Playful Technology

    DEFF Research Database (Denmark)

    Johansen, Stine Liv; Eriksson, Eva

    2013-01-01

    In this paper, the design of future services for children in Danish public libraries is discussed, in the light of new challenges and opportunities in relation to new media and technologies. The Danish government has over the last few years initiated and described a range of initiatives regarding...... in the library, the changing role of the librarians and the library space. We argue that intertwining traditional library services with new media forms and engaging play is the core challenge for future design in physical public libraries, but also that it is through new media and technology that new...

  11. Playful Technology

    DEFF Research Database (Denmark)

    Johansen, Stine Liv; Eriksson, Eva

    2013-01-01

    in the library, the changing role of the librarians and the library space. We argue that intertwining traditional library services with new media forms and engaging play is the core challenge for future design in physical public libraries, but also that it is through new media and technology that new......In this paper, the design of future services for children in Danish public libraries is discussed, in the light of new challenges and opportunities in relation to new media and technologies. The Danish government has over the last few years initiated and described a range of initiatives regarding...

  12. Architectural technology

    DEFF Research Database (Denmark)

    2005-01-01

    The booklet offers an overall introduction to the Institute of Architectural Technology and its projects and activities, and an invitation to the reader to contact the institute or the individual researcher for further information. The research, which takes place at the Institute of Architectural...... Technology at the Roayl Danish Academy of Fine Arts, School of Architecture, reflects a spread between strategic, goal-oriented pilot projects, commissioned by a ministry, a fund or a private company, and on the other hand projects which originate from strong personal interests and enthusiasm of individual...

  13. The Application of Cascade Signal Delay Cancellation in Single Phase Grid Synchronization Technology%CDSC 在单相电网同步锁相技术中的应用

    Institute of Scientific and Technical Information of China (English)

    孙立; 杨贵营; 庄圣贤; 李少阶; 严肃

    2014-01-01

    针对非理想电网环境下单相锁相环同步问题,文章提出一种基于级联信号延时消除(CDSC)的单相锁相环。研究中首先对仅有单相输入下的坐标变换结果进行分析,得出各种非理想电网状态下单相信号输入的同步旋转坐标变换的输出特性。结合带有频率反馈环路的级联信号延时消除法能够快速有效的抑制如直流分量、谐波、相位突变等非理想电网环境给同步参考坐标变换的输出带来不良影响,从而达到准确跟踪单相电网基波电压幅值、相位和频率自适应的目的。该方法无需构造单相电压信号的虚拟正交信号,算法简单且硬件上容易实现。仿真和实验结果验证所提锁相环在非理想电网环境下可以快速准确的跟踪输入电网电压信号的相位、频率和幅值,同时满足系统的稳定性。%A kind of single phase lock loop based on cascade signal delay cancellation has been proposed in this paper to deal with the single phase grid synchronization under non - ideal grid environment. Firstly,the coordinate transfor-mation results with only single phase signal is considered as the input signal has been analyzed,and the output fea-tures of synchronous rotation coordinate transformation with single phase signal as the input in every non - ideal grid environment will be obtained. The proposed method,combining the cascade signal delay elimination method with fre-quency feedback loop,will suppress the effect of non - ideal grid environment,like DC component,harmonic compo-nent,phase hits and so on,on synchronous reference coordinate transformation quickly and effectively,so as to track the voltage amplitude,phase of the single grid and frequency self - adaption accurately. Moreover,this method does not ask for virtual orthogonal signal construction,which will be implemented simply by hardware. The effectiveness of the proposed method is verified by simulation and experiment

  14. Elimination of diastereomer interference to determine Telcagepant (MK-0974) in human plasma using on-line turbulent-flow technology and off-line solid-phase extraction coupled with liquid chromatography/tandem mass spectrometry.

    Science.gov (United States)

    Xu, Yang; Willson, Kenneth J; Anderson, Melanie D G; Musson, Donald G; Miller-Stein, Cynthia M; Woolf, Eric J

    2009-06-01

    To eliminate the diastereomer interference on Telcagepant (MK-0974) determination during clinical study support, on-line high turbulent-flow liquid chromatography (HTLC) methods, HTLC-A and HTLC-B that covered dynamic range of 0.5-500 nM and 5-5000 nM, respectively, were developed. To meet the requirement of rapid assay transfer among multiple laboratories and analysts, a solid-phase extraction (SPE) assay was derived from the existing HTLC-B assay under the same dynamic range. The on-line HTLC assays were achieved through direct injection of plasma samples, extraction of analyte with a Cohesive C18 column (50 mm x 0.5 mm, 50 microm), followed by HPLC separation on a FluoPhase RP column (100 mm x 2.1 mm, 5 microm) and MS/MS detection. The off-line SPE assay used Waters Oasis HLB microElution plate to extract the analytes from plasma matrix before injecting on a FluoPhase RP column (150 mm x 2.1 mm, 5 microm) for LC-MS/MS analysis. Under both on-line and off-line assay conditions, the diastereomer 1c was chromatographically separated from MK-0974. Cross-validation with the pooled samples demonstrated that both on-line and off-line assays provided comparable data with a difference of pros and cons of on-line and off-line assays with regard to man power involved in sample preparation, total analysis time, carryover, cost efficiency, and the requirement for assay transfer are discussed.

  15. 多参考光合成孔径DMIPH术的细胞相位重构%Reconstruction of cell phase by multi-reference light synthetic aperture digital microsopic image plane holographic technology

    Institute of Scientific and Technical Information of China (English)

    巩文迪; 卢兆林; 刘佳毅

    2012-01-01

    Digital holographic microscopy (DHM) extracts the phase information directly instead of traditional optical microscopy, and records high frequency and low frequency information of an object more accurately. Based on DHM, cell phase was reconstructed by means of angular spectrum algorithm and least-squares unwrapping algorithm. Quantitative observation and effective measurement were earned out for living biological sample cells. The experiment results indicates that multi-reference light synthetic aperture digital microscopic image plane holography can be effectively applied to the amplitude and phase reconstruction of the microstructures of three-dimension objects, it can improve synthetic degree of system significantly in recording the object' s high frequency and low frequency information, and the diffraction limit resolution 12. 81p/mm can be obtained. The results show that super resolution imaging of digital holographic can be effectively implemented based on this system, and three-dimension topography information and accurate phase distribution of the microstructure cells can be obtained.%为了克服传统光学显微术无法直接提取相位信息的不足而能更准确记录物体高频和低频信息的合成,采用多参考光合成孔径数字显微像面全息系统,并结合角谱算法和最小二乘解包裹算法实现了细胞的相位重构.选取活体细胞组织等相位型生物进行作为实验样本,对其进行定量观察和有效测量.结果表明,多参考光合成孔径数字显微像面全息系统可以有效地应用于3维物体显微结构的振幅和相位重构,能显著地提高记录系统的高频和低频信息在全息图上的合成度,并实现超出系统的衍射极限12.81p/mm的分辨率.该系统可以有效地实现数字全息系统的超分辨率成像,从而获得细胞显微结构的3维形貌信息和准确的相位分布.

  16. Mixed phases during the phase transitions

    CERN Document Server

    Tatsumi, Toshitaka; Maruyama, Toshiki

    2011-01-01

    Quest for a new form of matter inside compact stars compels us to examine the thermodynamical properties of the phase transitions. We closely consider the first-order phase transitions and the phase equilibrium on the basis of the Gibbs conditions, taking the liquid-gas phase transition in asymmetric nuclear matter as an example. Characteristic features of the mixed phase are figured out by solving the coupled equations for mean-fields and densities of constituent particles self-consistently within the Thomas-Fermi approximation. The mixed phase is inhomogeneous matter composed of two phases in equilibrium; it takes a crystalline structure with a unit of various geometrical shapes, inside of which one phase with a characteristic shape, called "pasta", is embedded in another phase by some volume fraction. This framework enables us to properly take into account the Coulomb interaction and the interface energy, and thereby sometimes we see the mechanical instability of the geometric structures of the mixed phase...

  17. X-ray phase-contrast methods

    Energy Technology Data Exchange (ETDEWEB)

    Lider, V. V., E-mail: lider@ns.crys.ras.ru; Kovalchuk, M. V. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

    2013-11-15

    This review is devoted to a comparative description of the methods for forming X-ray phase-contrast images of weakly absorbing (phase) objects. These include the crystal interferometer method, the Talbot interferometer method, diffraction-enhanced X-ray imaging, and the in-line method. The potential of their practical application in various fields of science and technology is discussed. The publications on the development and optimization of X-ray phase-contrast methods and the experimental study of phase objects are analyzed.

  18. 超声相控阵在游乐设施轴类检测中的应用%The Research on Testing the Axis of Recreational Facilities by Ultrasonic Phased Array Technology

    Institute of Scientific and Technical Information of China (English)

    牛卫飞; 姜斌; 韦晨

    2013-01-01

    In order to overcome the problem of testing the axes without disassembling the recreational facilities,the linear ultrasonic phased array probes with different frequency were used to detect the defects on the profile of the axis.The results showed that all axes with different size can be tested by one ultrasonic phased array probe and all the small artifical defects on the surface of the one-meter axis can be detected.%为了对游乐设施轴类的“原位”快速检测,采用线形探头的超声相控阵技术检测游乐设施轴类模拟试件,对比不同频率探头从轴端面检测缺陷的效果.试验结果表明,采用一个线形相控阵探头即可以检测不同尺寸的轴类零件,并且该方法可以检测出长度为1米的轴表面的全部细小人工缺陷.

  19. Manufacturing technologies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-09-01

    The Manufacturing Technologies Center is an integral part of Sandia National Laboratories, a multiprogram engineering and science laboratory, operated for the Department of Energy (DOE) with major facilities at Albuquerque, New Mexico, and Livermore, California. Our Center is at the core of Sandia`s Advanced Manufacturing effort which spans the entire product realization process.

  20. Blast Technologies

    Science.gov (United States)

    2011-06-27

    Team Leader Risa Scherer Blast Mitigation Interior and Laboratory Team Leader Blast Technologies POC’s Government Point Of Contacts (POCs): To...to yield injury assessments at higher fidelities and with higher confidence UNCLASSIFIED UNCLASSIFIED Risa Scherer Blast Mitigation Interior and

  1. Energy Technology.

    Science.gov (United States)

    Eaton, William W.

    Reviewed are technological problems faced in energy production including locating, recovering, developing, storing, and distributing energy in clean, convenient, economical, and environmentally satisfactory manners. The energy resources of coal, oil, natural gas, hydroelectric power, nuclear energy, solar energy, geothermal energy, winds, tides,…

  2. Strategic Technology

    Science.gov (United States)

    2012-03-11

    the spectrum of future conflict and engagement. Technology Surprise Francis Fukuyama , in his introduction to the book Blindside, summarizes recent...atrocities or large-scale natural disasters abroad 12 Francis Fukuyama , ed, Blindside (Baltimore, MD: Brookings Institute Press, 2007), 1. 13 Defense

  3. (Environmental technology)

    Energy Technology Data Exchange (ETDEWEB)

    Boston, H.L.

    1990-10-12

    The traveler participated in a conference on environmental technology in Paris, sponsored by the US Embassy-Paris, US Environmental Protection Agency (EPA), the French Environmental Ministry, and others. The traveler sat on a panel for environmental aspects of energy technology and made a presentation on the potential contributions of Oak Ridge National Laboratory (ORNL) to a planned French-American Environmental Technologies Institute in Chattanooga, Tennessee, and Evry, France. This institute would provide opportunities for international cooperation on environmental issues and technology transfer related to environmental protection, monitoring, and restoration at US Department of Energy (DOE) facilities. The traveler also attended the Fourth International Conference on Environmental Contamination in Barcelona. Conference topics included environmental chemistry, land disposal of wastes, treatment of toxic wastes, micropollutants, trace organics, artificial radionuclides in the environment, and the use biomonitoring and biosystems for environmental assessment. The traveler presented a paper on The Fate of Radionuclides in Sewage Sludge Applied to Land.'' Those findings corresponded well with results from studies addressing the fate of fallout radionuclides from the Chernobyl nuclear accident. There was an exchange of new information on a number of topics of interest to DOE waste management and environmental restoration needs.

  4. GIG Technologies

    Science.gov (United States)

    2008-08-08

    caching • GIG as a sensor • Cyber SA/defense • Cross Domain Information Sharing • Multi-Level Security solutions • Enterprise Service Bus ( ESB ...Link Layer Technologies Integrated Link Layer All Optical Core For Terrestrial and Space Networks Separate Transmission Networks Mid-Term Integrated

  5. Geospatial Technology

    Science.gov (United States)

    Reed, Philip A.; Ritz, John

    2004-01-01

    Geospatial technology refers to a system that is used to acquire, store, analyze, and output data in two or three dimensions. This data is referenced to the earth by some type of coordinate system, such as a map projection. Geospatial systems include thematic mapping, the Global Positioning System (GPS), remote sensing (RS), telemetry, and…

  6. Sport Technology

    CSIR Research Space (South Africa)

    Kirkbride, T

    2007-11-01

    Full Text Available in design and manufacturing to virtual reality. There are carbon fiber materials used and in performance analysis that use video base technology. In the 1999 cricket World Cup, small earphones were used for Hansie to communicate with the coach and were later...

  7. Highly Selective Continuous Gas-Phase Methoxycarbonylation of Ethylene with Supported Ionic Liquid Phase (SILP) Catalysts

    DEFF Research Database (Denmark)

    Khokarale, Santosh Govind; Garcia Suárez, Eduardo José; Fehrmann, Rasmus

    2017-01-01

    Supported ionic liquid phase (SILP) technology was applied for the first time to the Pd-catalyzed continuous, gas-phase methoxycarbonylation of ethylene to selectively produce methyl propanoate (MP) in high yields. The influence of catalyst and reaction parameters such as, for example, ionic liqu...

  8. protoDUNE-Single Phase and protDUNE-DualPhase

    CERN Multimedia

    Brice, Maximilien

    2016-01-01

    At the EHN1 two big 8m x 8m x8m detector prototypes (protoDUNE-Single Phase and protDUNE-DualPhase) are being constructed. The aim is to test technologies and detector performances for DUNE, a new generation of LBN neutr

  9. Correlator technology

    NARCIS (Netherlands)

    Schooneveld, C. van

    1968-01-01

    The paper reviews a number of designs of cross-correlation receivers for the detection of active underwater transmissions. Particular attention is given to the various structures of phase insensitive receivers, and to the problems concerned with clipping of the input signal and the reference functio

  10. Integrated Micro Product and Technology Development

    DEFF Research Database (Denmark)

    Hansen, Hans Nørgaard

    2003-01-01

    The paper addresses the issues of integrated micro product and technology development. The implications of the decisions in the design phase on the subsequent manufacturing processes are considered vital. A coherent process chain is a necessary prerequisite for the realisation of the industrial...... potential of micro technology....

  11. Integrated Micro Product and Technology Development

    DEFF Research Database (Denmark)

    Hansen, Hans Nørgaard

    2003-01-01

    The paper addresses the issues of integrated micro product and technology development. The implications of the decisions in the design phase on the subsequent manufacturing processes are considered vital. A coherent process chain is a necessary prerequisite for the realisation of the industrial...... potential of micro technology....

  12. Vacuum Technology

    Energy Technology Data Exchange (ETDEWEB)

    Biltoft, P J

    2004-10-15

    The environmental condition called vacuum is created any time the pressure of a gas is reduced compared to atmospheric pressure. On earth we typically create a vacuum by connecting a pump capable of moving gas to a relatively leak free vessel. Through operation of the gas pump the number of gas molecules per unit volume is decreased within the vessel. As soon as one creates a vacuum natural forces (in this case entropy) work to restore equilibrium pressure; the practical effect of this is that gas molecules attempt to enter the evacuated space by any means possible. It is useful to think of vacuum in terms of a gas at a pressure below atmospheric pressure. In even the best vacuum vessels ever created there are approximately 3,500,000 molecules of gas per cubic meter of volume remaining inside the vessel. The lowest pressure environment known is in interstellar space where there are approximately four molecules of gas per cubic meter. Researchers are currently developing vacuum technology components (pumps, gauges, valves, etc.) using micro electro mechanical systems (MEMS) technology. Miniature vacuum components and systems will open the possibility for significant savings in energy cost and will open the doors to advances in electronics, manufacturing and semiconductor fabrication. In conclusion, an understanding of the basic principles of vacuum technology as presented in this summary is essential for the successful execution of all projects that involve vacuum technology. Using the principles described above, a practitioner of vacuum technology can design a vacuum system that will achieve the project requirements.

  13. The coordination of research and innovation activities relative to an emergent technology: the case of batteries for electric and hybrid vehicles; La coordination des activites de recherche et d'innovation dans les phases d'emergence: le cas des batteries pour vehicules electriques et hybrides

    Energy Technology Data Exchange (ETDEWEB)

    Larrue, Ph.

    2000-05-23

    In this thesis, we try to provide elements of a non-deterministic view of the coordination of research activities in the phase of emergence. Firstly, we try to identify the variables that determinate the strength and the characteristics of the imperative of coordination in this very preliminary period of an innovation process. Secondly, we try to evaluate the institutional arrangements that can effectively sustain the coordination of the activities of the various interdependent actors more or less involved in the innovation process. The basic idea of the thesis is that technological innovations do not originate as isolated according to a hypothetical underlying 'nature of the technology', especially when they are controversial and subject to great uncertainties as is the case with regard to batteries for Electric and hybrid Vehicles (EVs). Innovations appear to be generated by means of the interactions of a number of organizations belonging to different 'spheres' (different industries, scientific disciplines, public institutions, etc.). In order to validate a new area of opportunity which is still very uncertain at this preliminary stage, the competences and interests of these different organizations must be coordinated. Because of the complex mix of economic and technological barriers faced by the actors taking part in this innovation process, the area of batteries for electric and hybrid vehicles is the 'perfect laboratory' to investigate the institutional arrangements that can sustain the coordination of research and innovation activities relating to an emerging technology. The empirical and theoretical investigations are mainly focused on pre-competitive research consortia such as the United-States Advanced Battery Consortium (USABC). This case study is conducted through in-depth interviews with key-actors of the area of batteries and electric vehicles. We also use the results of an on-line experts opinions survey we performed

  14. Thermo-fluid dynamics of two-phase flow

    CERN Document Server

    Ishii, Mamoru; Ishii, Mamoru; Ishii, M

    2006-01-01

    Provides a very systematic treatment of two phase flow problems from a theoretical perspectiveProvides an easy to follow treatment of modeling and code devlopemnt of two phase flow related phenomenaCovers new results of two phase flow research such as coverage of fuel cells technology.

  15. 基于技术进步的中国能源消耗与经济增长:前后两个30年的比较%Energy Consumption and Economic Growth in China Due to Technological Progress:A Comparison of Two Phases (1953-1977 and 1978-2009)

    Institute of Scientific and Technical Information of China (English)

    魏艳旭; 孙根年; 李静

    2011-01-01

    Based on statistical data of energy consumption and GDP during the period 1953-2009,it can be divided into two phases (1953-1977 and 1978-2009) according to the index of energy consumption per unit.Then,the relationship between energy consumption and economic growth was compared.Results show that for the first phase,the energy consumption per capita grew with increasing the GDP per capita.When the energy consumption per capita increased from 6.67 tec to 17.9 tec,the elasticity of energy consumption decreased from 3.59 to-0.58.The relationship between the two variables is negatively correlated.For the second phrase,with increasing the GDP per capita,the energy consumption per capita grew with fluctuation.When the energy consumption per unit decreased from 17.5 tec to 5.05 tec,the elasticity of energy consumption fluctuated more greatly.The problem of energy consumption can be taken as an environmental problem as more environmental problems are caused by energy consumption.Therefore,the Impact Population Affluence Technology (IPAT) equation can be made use of to analyze the problem.Using the IPAT equation,energy consumption is decomposed into three parts,i.e.,population,economy,and technology.Then,the relation that the growth rate of energy consumption is concerned with the growth rate of population,economy,and technology progress is shown.The growth rate of energy consumption per unit can be taken as technology progress.With technology progress,the reason why the energy consumption and economic growth between the two phases are different was analyzed.Results show that 1) there was a positive correlation between energy consumption and economic growth during 1953-1977 due to technological progress.Economic growth improves energy consumption and energy consumption pushes economic growth.However,during the period 1978-2009,the economic growth was less dependent on energy consumption and the growth of energy consumption is suppressed.Technological change and

  16. Center for Nanoscale Science and Technology

    Science.gov (United States)

    NIST Center for Nanoscale Science and Technology (Program website, free access)   Currently there is no database matching your keyword search, but the NIST Center for Nanoscale Science and Technology website may be of interest. The Center for Nanoscale Science and Technology enables science and industry by providing essential measurement methods, instrumentation, and standards to support all phases of nanotechnology development, from discovery to production.

  17. State perspectives on clean coal technology deployment

    Energy Technology Data Exchange (ETDEWEB)

    Moreland, T. [State of Illinois Washington Office, Washington, DC (United States)

    1997-12-31

    State governments have been funding partners in the Clean Coal Technology program since its beginnings. Today, regulatory and market uncertainties and tight budgets have reduced state investment in energy R and D, but states have developed program initiatives in support of deployment. State officials think that the federal government must continue to support these technologies in the deployment phase. Discussions of national energy policy must include attention to the Clean Coal Technology program and its accomplishments.

  18. Analysis of Asynchronous Motor Phased Optimization of Energy-Saving Control Technology%异步电机相控优化节能控制技术分析

    Institute of Scientific and Technical Information of China (English)

    徐燕; 杨跃农

    2012-01-01

    Phased optimization and energy saving of AC asynchronous motor running problem was analyzed and researched. A comprehensive energy-saving control program of asynchronous motor starting and running was introduced. The program was simple in structure, speed performance, and reliable performance.%对交流异步电动机的相控优化节能运行问题作了全面的分析和研究,提出了异步电动机起动和运行的综合节能控制方案.该综合节能控制方案结构简单,调速性能好,性能可靠.

  19. Technology Programme

    Energy Technology Data Exchange (ETDEWEB)

    Batistoni, Paola; De Marco, Francesco; Pieroni, Leonardo (ed.)

    2005-07-01

    The technology activities carried out by the Euratom-ENEA Association in the framework of the European Fusion Development Agreement concern the Next Step (International Thermonuclear Experimental Reactor - ITER), the Long-Term Programme (breeder blanket, materials, International Fusion Materials Irradiation Facility - IFMIF), Power Plant Conceptual Studies and Socio-Economic Studies. The Underlying Technology Programme was set up to complement the fusion activities as well to develop technologies with a wider range of interest. The Technology Programme mainly involves staff from the Frascati laboratories of the Fusion Technical and Scientific Unit and from the Brasimone laboratories of the Advanced Physics Technologies Unit. Other ENEA units also provide valuable contributions to the programme. ENEA is heavily engaged in component development/testing and in design and safety activities for the European Fusion Technology Programme. Although the work documented in the following covers a large range of topics that differ considerably because they concern the development of extremely complex systems, the high level of integration and coordination ensures the capability to cover the fusion system as a whole. In 2004 the most significant testing activities concerned the ITER primary beryllium-coated first wall. In the field of high-heat-flux components, an important achievement was the qualification of the process for depositing a copper liner on carbon fibre composite (CFC) hollow tiles. This new process, pre-brazed casting (PBC), allows the hot radial pressing (HRP) joining procedure to be used also for CFC-based armour monoblock divertor components. The PBC and HRP processes are candidates for the construction of the ITER divertor. In the materials field an important milestone was the commissioning of a new facility for chemical vapour infiltration/deposition, used for optimising silicon carbide composite (SiCf/SiC) components. Eight patents were deposited during 2004

  20. Dual Space Technology Transfer

    Science.gov (United States)

    Kowbel, W.; Loutfy, R.

    2009-03-01

    Over the past fifteen years, MER has had several NASA SBIR Phase II programs in the area of space technology, based upon carbon-carbon (C-C) composites. In addition, in November 2004, leading edges supplied by MER provided the enabling technology to reach a Mach 10 record for an air breathing engine on the X-43 A flight. The MER business model constitutes a spin-off of technologies initially by incubating in house, and ultimately creating spin-off stand alone companies. FMC was formed to provide for technology transfer in the area of fabrication of C-C composites. FMC has acquired ISO 9000 and AS9100 quality certifications. FMC is fabricating under AS9100 certification, flight parts for several flight programs. In addition, FMC is expanding the application of carbon-carbon composites to several critical military programs. In addition to space technology transfer to critical military programs, FMC is becoming the world leader in the commercial area of low-cost C-C composites for furnace fixtures. Market penetrations have been accomplished in North America, Europe and Asia. Low-cost, quick turn-around and excellent quality of FMC products paves the way to greatly increased sales. In addition, FMC is actively pursuing a joint venture with a new partner, near closure, to become the leading supplier of high temperature carbon based composites. In addition, several other spin-off companies such as TMC, FiC, Li-Tech and NMIC were formed by MER with a plethora of potential space applications.

  1. Comparison of Temperature Field Distribution between Cement Preclinkering Technology and Cement Precalcining Technology

    Institute of Scientific and Technical Information of China (English)

    XU Xun; WANG Lan

    2016-01-01

    Through the comparison of calcination conditions between cement preclinkering technology and cement precalcining technology, we studied the characteristics of temperature ifeld distribution of cement preclinkering technology systems including cyclone preheater, preclinkering furnace, and rotary kiln. We used numerical simulation method to obtain data of temperature ifeld distribution.Some results are found by system study. The ratio of tail coal of cement preclinkering technology is about 70%, and raw meal temperature can reach 1070℃. ShorterL/D kiln type of preclinkering technology can obtain more stable calcining zone temperature. The highest solid temperature of cement preclinkering technology is higher than 80℃, and high temperature region (>1450℃) length is 2 times, which is beneifcial for calcining clinker and higher clinker quality. So cement preclinkering technology can obtain more performance temperature ifled, which improves both the solid-phase reaction and liquid-phase reaction.

  2. Hearing Assistive Technology

    Science.gov (United States)

    ... for the Public / Hearing and Balance Hearing Assistive Technology Hearing Assistive Technology: FM Systems | Infrared Systems | Induction ... Assistive Technology Systems Solutions What are hearing assistive technology systems (HATS)? Hearing assistive technology systems (HATS) are ...

  3. Communications technology

    Science.gov (United States)

    Cuccia, C. Louis; Sivo, Joseph

    1986-01-01

    The technologies for optimized, i.e., state of the art, operation of satellite-based communications systems are surveyed. Features of spaceborne active repeater systems, low-noise signal amplifiers, power amplifiers, and high frequency switches are described. Design features and capabilities of various satellite antenna systems are discussed, including multiple beam, shaped reflector shaped beam, offset reflector multiple beam, and mm-wave and laser antenna systems. Attitude control systems used with the antenna systems are explored, along with multiplexers, filters, and power generation, conditioning and amplification systems. The operational significance and techniques for exploiting channel bandwidth, baseband and modulation technologies are described. Finally, interconnectivity among communications satellites by means of RF and laser links is examined, as are the roles to be played by the Space Station and future large space antenna systems.

  4. Gait phase varies over velocities.

    Science.gov (United States)

    Liu, Yancheng; Lu, Kun; Yan, Songhua; Sun, Ming; Lester, D Kevin; Zhang, Kuan

    2014-02-01

    We sought to characterize the percent (PT) of the phases of a gait cycle (GC) as velocity changes to establish norms for pathological gait characteristics with higher resolution technology. Ninety five healthy subjects (49 males and 46 females with age 34.9 ± 11.8 yrs, body weight 64.0 ± 11.7 kg and BMI 23.5 ± 3.6) were enrolled and walked comfortably on a 10-m walkway at self-selected slower, normal, and faster velocities. Walking was recorded with a high speed camera (250 frames per second) and the eight phases of a GC were determined by examination of individual frames for each subject. The correlation coefficients between the mean PT of the phases of the three velocities gaits and PT defined by previous publications were all greater than 0.99. The correlation coefficient between velocity and PT of gait phases is -0.83 for loading response (LR), -0.75 for mid stance (MSt), and -0.84 for pre-swing (PSw). While the PT of the phases of three velocities from this study are highly correlated with PT described by Dr. Jacquenlin Perry decades ago, actual PT of each phase varied amongst these individuals with the largest coefficient variation of 24.31% for IC with slower velocity. From slower to faster walk, the mean PT of MSt diminished from 35.30% to 25.33%. High resolution recording revealed ambiguity of some gait phase definitions, and these data may benefit GC characterization of normal and pathological gait in clinical practice. The study results indicate that one should consider individual variations and walking velocity when evaluating gaits of subjects using standard gait phase classification.

  5. Manufacturing technology

    Energy Technology Data Exchange (ETDEWEB)

    Leonard, J.A.; Floyd, H.L.; Goetsch, B.; Doran, L. [eds.

    1993-08-01

    This bulletin depicts current research on manufacturing technology at Sandia laboratories. An automated, adaptive process removes grit overspray from jet engine turbine blades. Advanced electronic ceramics are chemically prepared from solution for use in high- voltage varistors. Selective laser sintering automates wax casting pattern fabrication. Numerical modeling improves performance of photoresist stripper (simulation on Cray supercomputer reveals path to uniform plasma). And mathematical models help make dream of low- cost ceramic composites come true.

  6. Titanium Aluminide Casting Technology Development

    Science.gov (United States)

    Bünck, Matthias; Stoyanov, Todor; Schievenbusch, Jan; Michels, Heiner; Gußfeld, Alexander

    2017-08-01

    Titanium aluminide alloys have been successfully introduced into civil aircraft engine technology in recent years, and a significant order volume increase is expected in the near future. Due to its beneficial buy-to-fly ratio, investment casting bears the highest potential for cost reduction of all competing production technologies for TiAl-LPTB. However, highest mechanical properties can be achieved by TiAl forging. In view of this, Access e.V. has developed technologies for the production of TiAl investment cast parts and TiAl die cast billets for forging purposes. While these parts meet the highest requirements, establishing series production and further optimizing resource and economic efficiency are present challenges. In order to meet these goals, Access has recently been certified according to aircraft standards, aiming at qualifying parts for production on technology readiness level 6. The present work gives an overview of the phases of development and certification.

  7. Emerging technologies

    Energy Technology Data Exchange (ETDEWEB)

    Lu, Shin-yee

    1993-03-01

    The mission of the Emerging Technologies thrust area at Lawrence Livermore National Laboratory is to help individuals establish technology areas that have national and commercial impact, and are outside the scope of the existing thrust areas. We continue to encourage innovative ideas that bring quality results to existing programs. We also take as our mission the encouragement of investment in new technology areas that are important to the economic competitiveness of this nation. In fiscal year 1992, we have focused on nine projects, summarized in this report: (1) Tire, Accident, Handling, and Roadway Safety; (2) EXTRANSYT: An Expert System for Advanced Traffic Management; (3) Odin: A High-Power, Underwater, Acoustic Transmitter for Surveillance Applications; (4) Passive Seismic Reservoir Monitoring: Signal Processing Innovations; (5) Paste Extrudable Explosive Aft Charge for Multi-Stage Munitions; (6) A Continuum Model for Reinforced Concrete at High Pressures and Strain Rates: Interim Report; (7) Benchmarking of the Criticality Evaluation Code COG; (8) Fast Algorithm for Large-Scale Consensus DNA Sequence Assembly; and (9) Using Electrical Heating to Enhance the Extraction of Volatile Organic Compounds from Soil.

  8. Technology Management

    DEFF Research Database (Denmark)

    Pilkington, Alan

    2014-01-01

    This paper reports a bibliometric analysis (co-citation network analysis) of 10 journals in the management of technology (MOT) field. As well as introducing various bibliometric ideas, network analysis tools identify and explore the concepts covered by the field and their inter-relationships. Spe......This paper reports a bibliometric analysis (co-citation network analysis) of 10 journals in the management of technology (MOT) field. As well as introducing various bibliometric ideas, network analysis tools identify and explore the concepts covered by the field and their inter......-relationships. Specific results from different levels of analysis show the different dimensions of technology management: • Co-word terms identify themes • Journal co-citation network: linking to other disciplines • Co-citation network show concentrations of themes The analysis shows that MOT has a bridging role...... in integrating ideas from several distinct disciplines. This suggests that management and strategy are central to MOT which essentially relates to the firm rather than policy. Similarly we have a dual focus on capabilities, but can see subtle differences in how we view these ideas, either through an inwards...

  9. Phase contrast image synthesis

    DEFF Research Database (Denmark)

    Glückstad, J.

    1996-01-01

    A new method is presented for synthesizing arbitrary intensity patterns based on phase contrast imaging. The concept is grounded on an extension of the Zernike phase contrast method into the domain of full range [0; 2 pi] phase modulation. By controlling the average value of the input phase...... function and by choosing appropriate phase retardation at the phase contrast filter, a pure phase to intensity imaging is accomplished. The method presented is also directly applicable in dark field image synthesis....

  10. Technological stress: psychophysiological aspects of working with modern information technology.

    Science.gov (United States)

    Arnetz, B B

    1997-01-01

    There is rapid technological transformation occurring in both work and social life. The results of information technology, such as mobile telephones, computers, and electronic networks, have been looked upon as the key to solving several of the most pressing problems of the Western world. At the same time, numerous studies have shown that the great majority of computerization projects fail to meet their deadlines with the originally specified functionality mainly because human factors are not sufficiently taken into account during the planning and implementation phase of the project. In a study of the bodily, mental, and psychophysiological reactions of employees involved in the design of advanced telecommunications systems and of office employees using regular video display technology, several stress-related psychosomatic disorders have been identified. They include sleep disturbances, psychophysiological stress and somatic complaints. Controlled intervention programs aimed at enhancing organizational structures and individual coping strategies have been proved effective in counteracting the negative effects of working with information technology. The two-way interaction between the external information technology environment and bodily and mental reactions needs to be taken more into account in the design and use of modern information technology. There appears to be an increased awareness of human aspects when the risks and benefits of the rapid spread of information technologies are discussed.

  11. Research on the three phase rectifier technology of vienna topology based on the LCL filter%基于LCL滤波的vienna拓扑三相整流技术研究

    Institute of Scientific and Technical Information of China (English)

    林壮; 姚文熙; 吕征宇

    2013-01-01

    Vienna topology rectifier has the advantages of low switching losses as well as three-level voltage waveform which helps to improve the system power density. A LCL-filter-based three-phase vienna topology rectifier is introduced to further improve the system power density and an analysis is given about the effect of control system digital delay on the system stability under different current feedback. As the vienna topology rectifier can operate on higher switching frequencies compared to traditional three-phase rectifier, a method of designing the LCL filter resonance frequency is presented taking advantages of the DSP digital delay to maintain system stability and reduce the volume of the filter under a certain switching ripple attenuation. The experiments and simulations verify the theoretical derivation and analysis finally. This work is supported by National Natural Science Foundation of China (No. J20111136).%  vienna 拓扑整流器具有低开关损耗、三电平电压波形等优点,适于提高系统功率密度。为进一步提高功率密度,将LCL 滤波器引入到三相 vienna 拓扑整流器前端,分析了不同电流反馈下,系统控制系统数字延时对系统稳定性的影响。基于vienna整流器相比普通三相整流器能工作于更高的开关频率的特点,提出利用DSP固有的数字控制的延时特性,在保持一定开关纹波衰减的情况下,合理设计LCL滤波器谐振频率,达到保持系统稳定和减小滤波器体积的目的。最后通过仿真和实验验证了理论推导和分析的合理性。

  12. CSP流程生产经济型热轧双相钢的工艺与组织性能%Technology and Microstructure-Mechanical Properties of Economical Hot Rolled Dual Phase Steel By CSP Process

    Institute of Scientific and Technical Information of China (English)

    韩斌; 谭文; 汪水泽; 张超; 蔡晓辉

    2011-01-01

    为了在CSP产线上开发新一代经济型热轧双相钢,并确定生产的最佳成分和工艺,介绍了在武钢CSP生产线进行580MPa级热轧双相钢的工业化生产试制情况。分别采用C-Mn-Si系和C-Mn-Si-Cr系钢为原料,通过控制轧制和基于超强冷却设备的控制冷却工艺,成功开发出抗拉强度580MPa级热轧双相钢。通过比较分析2种成分钢的力学性能和微观组织,结果表明:经济型的C-Mn-Si系钢相对于C-Mn-Si-Cr系钢具有屈服强度低、屈强比小、伸长率大的特点,虽然马氏体量相对较少,但具有马氏体呈岛状更加均匀分布在铁素体晶界上等典型双相钢的特征,同时提出了生产过程中控制铁素体析出量和促进马氏体形成的具体措施。%In order to develop new generation economical DP steel and obtain the optimum composition and processing parameters in CSP line,the pilot production of 580 MPa hot-rolled dual phase strip at WISCO CSP Plant was introduced.Two series of dual phase steel,such as plain C-Mn-Si and C-Mn-Si-Cr steel,were produced successfully by controlled rolling and controlled cooling with ultra fast cooling capacity.The tensile strength of both series of DP steel achieves 580 MPa.Comparison of mechanical properties and microstructure between two steels,the results show that the cost of C-Si-Mn steel is lower than C-Si-Mn-Cr steel,C-Si-Mn steel has lower yield stress,lower yield strength/tensile strength ratio and higher elongation.Although obtained martensite fraction in C-Si-Mn steel was lower,the island martensite distributed among the ferrite grain boundaries was more uniform.The specific measures of controlling ferrite formation and promoting martensite transformation were put forward.

  13. Solar Technology Center

    Energy Technology Data Exchange (ETDEWEB)

    Boehm, Bob

    2011-04-27

    The Department of Energy, Golden Field Office, awarded a grant to the UNLV Research Foundation (UNLVRF) on August 1, 2005 to develop a solar and renewable energy information center. The Solar Technology Center (STC) is to be developed in two phases, with Phase I consisting of all activities necessary to determine feasibility of the project, including design and engineering, identification of land access issues and permitting necessary to determine project viability without permanently disturbing the project site, and completion of a National Environmental Policy Act (NEPA) Environmental Assessment. Phase II is the installation of infrastructure and related structures, which leads to commencement of operations of the STC. The STC is located in the Boulder City designated 3,000-acre Eldorado Valley Energy Zone, approximately 15 miles southwest of downtown Boulder City and fronting on Eldorado Valley Drive. The 33-acre vacant parcel has been leased to the Nevada Test Site Development Corporation (NTSDC) by Boulder City to accommodate a planned facility that will be synergistic with present and planned energy projects in the Zone. The parcel will be developed by the UNLVRF. The NTSDC is the economic development arm of the UNLVRF. UNLVRF will be the entity responsible for overseeing the lease and the development project to assure compliance with the lease stipulations established by Boulder City. The STC will be operated and maintained by University of Nevada, Las Vegas (UNLV) and its Center for Energy Research (UNLV-CER). Land parcels in the Eldorado Valley Energy Zone near the 33-acre lease are committed to the construction and operation of an electrical grid connected solar energy production facility. Other projects supporting renewable and solar technologies have been developed within the energy zone, with several more developments in the horizon.

  14. SITE TECHNOLOGY CAPSULE: GRACE DEARBORN INC.'S DARAMEND BIOREMEDIATION TECHNOLOGY

    Science.gov (United States)

    Grace Dearborn's DARAMEND Bioremediation Technology was developed to treat soils/sediment contaminated with organic contaminants using solid-phase organic amendments. The amendments increase the soil's ability to supply biologically available water/nutrients to microorganisms and...

  15. Flexible Ultrasonic Phased-Array Probe

    Institute of Scientific and Technical Information of China (English)

    施克仁; 阙开良; 郭大勇

    2004-01-01

    In ultrasonic phased-array testing, most probes are rigid with fixed elements. However, when testing a cambered piece, a rigid probe cannot be used directly, but an ultrasonic chock or coupling media must be used, which adds cost and reduces the accuracy. The objective of this research was to improve the tests of cambered pieces. A flexible ultrasonic phased-array probe was developed to do the flexible phased-array testing. The key technologies in the flexible phased-array probe include the probe design and the phased-array control. A new method was developed to design the flexible probe according to the curvature of the piece and the test depth. The method includes the calculation of the element's height (he), the relative rotation angle ((e), the distance between the adjoining elements (de), and the element's effective testing range. A flexible ultrasonic phased-array probe has been developed using this method.

  16. Cost analysis methodology: Photovoltaic Manufacturing Technology Project

    Energy Technology Data Exchange (ETDEWEB)

    Whisnant, R.A. (Research Triangle Inst., Research Triangle Park, NC (United States))

    1992-09-01

    This report describes work done under Phase 1 of the Photovoltaic Manufacturing Technology (PVMaT) Project. PVMaT is a five-year project to support the translation of research and development in PV technology into the marketplace. PVMaT, conceived as a DOE/industry partnership, seeks to advanced PV manufacturing technologies, reduce PV module production costs, increase module performance, and expand US commercial production capacities. Under PVMaT, manufacturers will propose specific manufacturing process improvements that may contribute to the goals of the project, which is to lessen the cost, thus hastening entry into the larger scale, grid-connected applications. Phase 1 of the PVMaT project is to identify obstacles and problems associated with manufacturing processes. This report describes the cost analysis methodology required under Phase 1 that will allow subcontractors to be ranked and evaluated during Phase 2.

  17. Electrochemical sensors for volatile nitrogen compounds in air. Final report to J&N Associates, Inc. from Illinois Institute of Technology, Re: Department of Energy Phase I STTR Project DOE No. DE-FG02-99ER86090

    Energy Technology Data Exchange (ETDEWEB)

    Stetter, Joseph R.; Penrose, William R.; Roh, Sae-Won

    2000-09-07

    Air pollutant gases such as nitric oxide, nitrogen dioxide, nitrous acid, and peroxyacetyl nitrate are commonly encountered in urban atmospheres. They constitute a nuisance to some, and a positive danger to others with such respiratory conditions as asthma and emphysema. It is known that exposure to these gases is a function of microenvironment, but monitoring of microenvironments is presently too uneconomical to be used except in rare cases, such as ''sick buildings''. Gas sensors that are small, sensitive, selective, and inexpensive are needed to make such monitoring practical. Many sensor types have apparently reached their technological development limit, but porous-electrode amperometric gas sensors have not been thoroughly explored for low-concentration applications. We have explored amperometric gas sensors of several types for lower detection limits to a series of nitrogen gases. Evidence gathered in this study indicates that greater sensitivity will be achieved by reducing the noise level of the working electrode, rather than increasing the output signal.

  18. 三相PFC和软开关技术在变频器中的应用%Three-phase PFC and Soft-switch Technology in the Application of Inverter

    Institute of Scientific and Technical Information of China (English)

    沈锦飞; 丁杨

    2011-01-01

    Based on traditional inverter, the paper proposed a new circuit with power factor correction and soft-switch technology, which improves the power quality of grid and reduces power consumption. Power factor correction uses a dual switch PFC circuit with a new CCM model and provides a stable DC voltage source with low EMI and is suitable for high power. Behind that a zero-voltage turn-on circuit which consists of three auxiliary switches and LC resonant circuit is adopted. It is easy to control. At last, the paper verified its ability to test with inductive loads by software simulation.%将三相功率因数校正和软开关技术与传统变频器结合,提出了一种新颖的电路结构,在变频调速的同时,改善了电网,降低功耗.前端使用三相双开关PFC电路,结合一种新颖的CCM控制模式,为直流侧提供稳定的电压源,EMI小且适用于大功率,后端的零电压导通电路使用三个辅助开关与LC谐振电路,降低了控制难度以及逆变侧开关的负荷,并通过仿真验证.

  19. ECH Technology Development

    Energy Technology Data Exchange (ETDEWEB)

    Temkin, Richard [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

    2014-12-24

    Electron Cyclotron Heating (ECH) is needed for plasma heating, current drive, plasma stability control, and other applications in fusion energy sciences research. The program of fusion energy sciences supported by U. S. DOE, Office of Science, Fusion Energy Sciences relies on the development of ECH technology to meet the needs of several plasma devices working at the frontier of fusion energy sciences research. The largest operating ECH system in the world is at DIII-D, consisting of six 1 MW, 110 GHz gyrotrons capable of ten second pulsed operation, plus two newer gyrotrons. The ECH Technology Development research program investigated the options for upgrading the DIII-D 110 GHz ECH system. Options included extending present-day 1 MW technology to 1.3 – 1.5 MW power levels or developing an entirely new approach to achieve up to 2 MW of power per gyrotron. The research consisted of theoretical research and designs conducted by Communication and Power Industries of Palo Alto, CA working with MIT. Results of the study would be validated in a later phase by research on short pulse length gyrotrons at MIT and long pulse / cw gyrotrons in industry. This research follows a highly successful program of development that has led to the highly reliable, six megawatt ECH system at the DIII-D tokamak. Eventually, gyrotrons at the 1.5 megawatt to multi-megawatt power level will be needed for heating and current drive in large scale plasmas including ITER and DEMO.

  20. Advanced sulfur control concepts in hot-gas desulfurization technology: Phase 2. Exploratory studies on the direct production of elemental sulfur during the regeneration of high temperature desulfurization sorbents. Topical report

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, A.; Huang, W.; White, J. [and others

    1997-07-01

    The topical report describes the results of Phase 2 research to determine the feasibility of the direct production of elemental sulfur during the regeneration of high temperature desulfurization sorbents. Many of the contaminants present in coal emerge from the gasification process in the product gas. Much effort has gone into the development of high temperature metal oxide sorbents for removal of H{sub 2}S from coal gas. The oxides of zinc, iron, manganese, and others have been studied. In order for high temperature desulfurization to be economical it is necessary that the sorbents be regenerated to permit multicycle operation. Current methods of sorbent regeneration involve oxidation of the metal sulfide to reform the metal oxide and free the sulfur as SO{sub 2}. An alternate regeneration process in which the sulfur is liberated in elemental form is desired. Elemental sulfur, which is the typical feed to sulfuric acid plants, may be easily separated, stored, and transported. Although research to convert SO{sub 2} produced during sorbent regeneration to elemental sulfur is on-going, additional processing steps are required and the overall process will be more complex. Clearly, the direct production of elemental sulfur is preferred. Desulfurization utilizing a cerium oxide based sorbent is discussed.

  1. Development of a fiber coating based on molecular sol-gel imprinting technology for selective solid-phase micro extraction of caffeine from human serum and determination by gas chromatography/mass spectrometry.

    Science.gov (United States)

    Rajabi Khorrami, Afshin; Rashidpur, Amene

    2012-05-21

    In this work, a molecular sol-gel imprinting approach has been introduced to produce a fiber coating for selective direct immersion solid-phase microextraction (SPME) of caffeine. The polymerization mixture was composed of vinyl trimethoxysilane and methacrylic acid as vinyl sol-gel precursor and functional monomer, respectively. Caffeine was used as template molecule during polymerization process. The prepared fibers could be coupled directly to gas chromatography/mass spectrometry (GC/MS) and used for trace analysis of caffeine in a complex sample such as human serum. The parameters influencing SPME such as time, temperature and stirring speed were optimized. The prepared coating showed good selectivity towards caffeine in the presence of some structurally related compounds. Also, it offered high imprinting capability in comparison to bare fiber and non-imprinted coating. Linear range for caffeine detection was 1-80 μg mL(-1) and the limit of detection was 0.1 μg mL(-1). The intra-day and inter-day precisions of the peak areas for five replicates were 10 and 16%, respectively.

  2. Design of Dual-Phase Lock-In Amplifier Based on Virtual Instrument Technology%一种基于虚拟仪器技术的双锁相放大器的设计

    Institute of Scientific and Technical Information of China (English)

    孙秀桂; 张洪斌; 孙江波

    2011-01-01

    锁相放大器是微弱信号检测的最有效手段,针对现有模拟锁相放大器和数字锁相放大器存在的问题,利用虚拟仪器技术和锁相放大器的基本原理,基于NI公司的LabVIEW软件及DAQ板卡对数字锁相放大器进行设计.设计中采用双锁相技术,通过在紫外辐射测试中的测试结果表明此锁相放大器具有更好的性能,可以精确地提取被噪声湮没的信号,可获得较好的信噪比.%Lock-in amplifier( LIA) is the effective means for weak signal detection. For existing analog and dig ital LJA problems, the double lock-in amplifier is designed based on LabVIEW and DAQ as well as virtual in strument and principle of LJA. The dual-phase PLL is adopted in this design. It is proved through application in detect of ultraviolet radiation that this software LIA is better in performance than conventional LIA. It can get out the annihilation signal by the noise precisely and gain a better signal-to-noise ratio.

  3. An application of ultrasonic phased array imaging in electron beam welding inspection

    Institute of Scientific and Technical Information of China (English)

    周琦; 刘方军; 李志军; 李旭东; 齐铂金

    2002-01-01

    The basic principle and features of ultrasonic phased array imaging are discussed in this paper. Through the ultrasonic phased array technology, the electron beam welding defects and frozen keyholes characterization and imaging were realized. The ultrasonic phased array technology can detect kinds of defects in electron beam welding (EBW) quickly and easily.

  4. Agreement technologies

    CERN Document Server

    Ossowski, Sascha

    2013-01-01

    More and more transactions, whether in business or related to leisure activities, are mediated automatically by computers and computer networks, and this trend is having a significant impact on the conception and design of new computer applications. The next generation of these applications will be based on software agents to which increasingly complex tasks can be delegated, and which interact with each other in sophisticated ways so as to forge agreements in the interest of their human users. The wide variety of technologies supporting this vision is the subject of this volume. It summarises

  5. Seafood Technology

    DEFF Research Database (Denmark)

    Børresen, Torger

    -Trophic Aquaculture (IMTA) is needed to pay attention to environmental protection and continued biodiversity. Further, it is necessary to use all the raw materials provided such that present by-products and side streams in processing are being upgraded for a better use than today. Principles of blue biotechnology may......This presentation will fill the total picture of this conference between fisheries and aquaculture, blue biotech and bioconservation, by considering the optimal processing technology of marine resources from the raw material until the seafood reaches the plate of the consumer. The situation today...

  6. An Overview of 2014 SBIR Phase I and Phase II Materials Structures for Extreme Environments

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.; Morris, Jessica R.

    2015-01-01

    NASA's Small Business Innovation Research (SBIR) program focuses on technological innovation by investing in development of innovative concepts and technologies to help NASA mission directorates address critical research needs for Agency programs. This report highlights nine of the innovative SBIR 2014 Phase I and Phase II projects that emphasize one of NASA Glenn Research Center's six core competencies-Materials and Structures for Extreme Environments. The technologies cover a wide spectrum of applications such as high temperature environmental barrier coating systems, deployable space structures, solid oxide fuel cells, and self-lubricating hard coatings for extreme temperatures. Each featured technology describes an innovation, technical objective, and highlights NASA commercial and industrial applications. This report provides an opportunity for NASA engineers, researchers, and program managers to learn how NASA SBIR technologies could help their programs and projects, and lead to collaborations and partnerships between the small SBIR companies and NASA that would benefit both.

  7. Technology support for initiation of high-throughput processing of thin-film CdTe PV modules. Phase 3 final technical report, 14 March 1997--1 April 1998

    Energy Technology Data Exchange (ETDEWEB)

    Powell, R.C.; Dorer, G.L.; Jayamaha, U.; Hanak, J.J. [Solar Cells, Inc., Toledo, OH (United States)

    1998-09-01

    Thin-film PV devices based on cadmium telluride have been identified as one of the candidates for high-performance, low-cost source of renewable electrical energy. Roadblocks to their becoming a part of the booming PV market growth have been a low rate of production and high manufacturing cost caused by several rate-limiting process steps. Solar Cells Inc. has focused on the development of manufacturing processes that will lead to high volume and low-cost manufacturing of solar cells and on increasing the performance of the present product. The process research in Phase 3 was concentrated on further refinement of a newly developed vapor transport deposition (VTD) process and its implementation into the manufacturing line. This development included subsystems for glass substrate transport, continuous feed of source materials, generation of source vapors, and uniform deposition of the semiconductor layers. As a result of this R and D effort, the VTD process has now achieved a status in which linear coating speeds in excess of 8 ft/min have been achieved for the semiconductor, equal to about two modules per minute, or 144 kW per 24 hour day. The process has been implemented in a production line, which is capable of round-the-clock continuous production of coated substrates 120 cm x 60 cm in size at a rate of 1 module every four minutes, equal to 18 kW/day. Currently the system cycle time is limited by the rate of glass introduction into the system and glass heating, but not by the rate of the semiconductor deposition. A new SCI record efficiency of 14.1% has been achieved for the cells.

  8. Comprehensive analysis of commercial willow bark extracts by new technology platform: combined use of metabolomics, high-performance liquid chromatography-solid-phase extraction-nuclear magnetic resonance spectroscopy and high-resolution radical scavenging assay.

    Science.gov (United States)

    Agnolet, Sara; Wiese, Stefanie; Verpoorte, Robert; Staerk, Dan

    2012-11-02

    Here, proof-of-concept of a new analytical platform used for the comprehensive analysis of a small set of commercial willow bark products is presented, and compared with a traditional standardization solely based on analysis of salicin and salicin derivatives. The platform combines principal component analysis (PCA) of two chemical fingerprints, i.e., HPLC and (1)H NMR data, and a pharmacological fingerprint, i.e., high-resolution 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) radical cation (ABTS(+)) reduction profile, with targeted identification of constituents of interest by hyphenated HPLC-solid-phase extraction-tube transfer NMR, i.e., HPLC-SPE-ttNMR. Score plots from PCA of HPLC and (1)H NMR fingerprints showed the same distinct grouping of preparations formulated as capsules of Salix alba bark and separation of S. alba cortex. Loading plots revealed this to be due to high amount of salicin in capsules and ampelopsin, taxifolin, 7-O-methyltaxifolin-3'-O-glucoside, and 7-O-methyltaxifolin in S. alba cortex, respectively. PCA of high-resolution radical scavenging profiles revealed clear separation of preparations along principal component 1 due to the major radical scavengers (+)-catechin and ampelopsin. The new analytical platform allowed identification of 16 compounds in commercial willow bark extracts, and identification of ampelopsin, taxifolin, 7-O-methyltaxifolin-3'-O-glucoside, and 7-O-methyltaxifolin in S. alba bark extract is reported for the first time. The detection of the novel compound, ethyl 1-hydroxy-6-oxocyclohex-2-enecarboxylate, is also described.

  9. Design of Phase Coded Radar Based on the Space-time Adaptive Processing Technology%基于空时自适应处理技术的雷达相位编码的研究

    Institute of Scientific and Technical Information of China (English)

    乌日力格; 艾文宝

    2015-01-01

    The radar performance can be improved by radar coding technique. In this paper we analyze the problem of optimizing the phase coded radar to maximize the space-time adaptive processing output. We consider the following constraints: a similarity with a prefixed Barker code, estimation accuracies of both time Doppler frequency and space Doppler frequency, and a robust energy. Although the resulting optimization problem is a non-convex Quadratically Constrained Quadratic Program (QCQP), we propose a fast and efficient algorithm based on the relaxation of the original problem into a semidefinite program (SDP). Numerical simulations suggest that this kind of radar code design achieves a good performance.%为通过雷达编码技术可以使雷达性能得到提高。本文主要研究优化雷达相位编码使得雷达空时自适应处理器的输出信噪比最大的问题。本文考虑以下约束:保证雷达编码与已知巴克码达到一定的相似度、空间和时间多普勒频率估计准确度达到一定的要求,同时考虑到雷达能量的鲁棒性问题。对于上述非凸二次约束优化问题,我们用了快速有效的秩一分解方法。通过仿真实验可以证明,这种相位雷达编码可以使雷达性能提高。

  10. Transportable setup for amplifier phase fidelity measurements

    OpenAIRE

    Troebs, Michael; Bogan, C.; Barke, S.; Kuehn, G.; Reiche, J.; Heinzel, Gerhard; Danzmann, Karsten

    2015-01-01

    One possible laser source for the Laser Interferometer Space Antenna (LISA) consists of an Ytterbium-doped fiber amplifier originally developed for inter-satellite communication, seeded by the laser used for the technology demonstrator mission LISA Pathfinder. LISA needs to transmit clock information between its three spacecraft to correct for phase noise between the clocks on the individual spacecraft. For this purpose phase modulation sidebands at GHz frequencies will be imprinted on the la...

  11. Science & Technology Review October 2007

    Energy Technology Data Exchange (ETDEWEB)

    Chinn, D J

    2007-08-21

    Livermore researchers won five R&D 100 awards in R&D Magazine's annual competition for the top 100 industrial innovations worldwide. This issue of Science & Technology Review highlights the award-winning technologies: noninvasive pneumothorax detector, microelectromechanical system-based adaptive optics scanning laser ophthalmoscope, large-area imager, hyper library of linear solvers, and continuous-phase-plate optics system manufactured using magnetorheological finishing. Since 1978, Laboratory researchers have received 118 R&D 100 awards. The R&D 100 logo (on the cover and p 1) is reprinted courtesy of R&D Magazine.

  12. Technology base for microgravity horticulture

    Science.gov (United States)

    Sauer, R. L.; Magnuson, J. W.; Scruby, R. R.; Scheld, H. W.

    1987-01-01

    Advanced microgravity plant biology research and life support system development for the spacecraft environment are critically hampered by the lack of a technology base. This inadequacy stems primarily from the fact that microgravity results in a lack of convective currents and phase separation as compared to the one gravity environment. A program plan is being initiated to develop this technology base. This program will provide an iterative flight development effort that will be closely integrated with both basic science investigations and advanced life support system development efforts incorporating biological processes. The critical considerations include optimum illumination methods, root aeration, root and shoot support, and heat rejection and gas exchange in the plant canopy.

  13. A Synchronization Scheme of the Sampling System in Digital Substation Based on Software Phase-Locked-Loop Technology%基于锁相环技术的数字化变电站采样系统同步方案

    Institute of Scientific and Technical Information of China (English)

    郭乐

    2013-01-01

      为解决数字化变电站系统中的分布式采样同步性问题,提出利用软件锁相环技术,通过修正不同设备之间的相位和频率的偏差,实现采样同步。根据变电站的实际情况,给出了具体的实现方案。并以基于电子式互感器的母线保护装置和光纤纵差保护两个例子,给出了软件锁相环技术的仿真和应用效果。证明了软件锁相环技术在成本和可靠性方面的优势。%A software phase-locked-loop (PLL) algorithm is propsed to solve synchroziton problem in distributed sampling for digital substation system. By correcting deviation of frequency and phase among different devices through PLL algorithm, sampling synchrozation can be achieved. The principle of PLL technology and realizing method are also given in this paper with simulation and application of two feasible examples: busbar protection based on electronic transformer, and optical fibre line differential protection. Advantages in cost and reliability of PLL algorithm is proved.

  14. Photon technology. Hard photon technology; Photon technology. Hard photon gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Research results of hard photon technology have been summarized as a part of novel technology development highly utilizing the quantum nature of photon. Hard photon technology refers to photon beam technologies which use photon in the 0.1 to 200 nm wavelength region. Hard photon has not been used in industry due to the lack of suitable photon sources and optical devices. However, hard photon in this wavelength region is expected to bring about innovations in such areas as ultrafine processing and material synthesis due to its atom selective reaction, inner shell excitation reaction, and spatially high resolution. Then, technological themes and possibility have been surveyed. Although there are principle proposes and their verification of individual technologies for the technologies of hard photon generation, regulation and utilization, they are still far from the practical applications. For the photon source technology, the laser diode pumped driver laser technology, laser plasma photon source technology, synchrotron radiation photon source technology, and vacuum ultraviolet photon source technology are presented. For the optical device technology, the multi-layer film technology for beam mirrors and the non-spherical lens processing technology are introduced. Also are described the reduction lithography technology, hard photon excitation process, and methods of analysis and measurement. 430 refs., 165 figs., 23 tabs.

  15. Wearable Technology

    Science.gov (United States)

    Watson, Amanda

    2013-01-01

    Wearable technology projects, to be useful, in the future, must be seamlessly integrated with the Flight Deck of the Future (F.F). The lab contains mockups of space vehicle cockpits, habitat living quarters, and workstations equipped with novel user interfaces. The Flight Deck of the Future is one element of the Integrated Power, Avionics, and Software (IPAS) facility, which, to a large extent, manages the F.F network and data systems. To date, integration with the Flight Deck of the Future has been limited by a lack of tools and understanding of the Flight Deck of the Future data handling systems. To remedy this problem it will be necessary to learn how data is managed in the Flight Deck of the Future and to develop tools or interfaces that enable easy integration of WEAR Lab and EV3 products into the Flight Deck of the Future mockups. This capability is critical to future prototype integration, evaluation, and demonstration. This will provide the ability for WEAR Lab products, EV3 human interface prototypes, and technologies from other JSC organizations to be evaluated and tested while in the Flight Deck of the Future. All WEAR Lab products must be integrated with the interface that will connect them to the Flight Deck of the Future. The WEAR Lab products will primarily be programmed in Arduino. Arduino will be used for the development of wearable controls and a tactile communication garment. Arduino will also be used in creating wearable methane detection and warning system.

  16. Benchmarking foreign electronics technologies

    Energy Technology Data Exchange (ETDEWEB)

    Bostian, C.W.; Hodges, D.A.; Leachman, R.C.; Sheridan, T.B.; Tsang, W.T.; White, R.M.

    1994-12-01

    This report has been drafted in response to a request from the Japanese Technology Evaluation Center`s (JTEC) Panel on Benchmarking Select Technologies. Since April 1991, the Competitive Semiconductor Manufacturing (CSM) Program at the University of California at Berkeley has been engaged in a detailed study of quality, productivity, and competitiveness in semiconductor manufacturing worldwide. The program is a joint activity of the College of Engineering, the Haas School of Business, and the Berkeley Roundtable on the International Economy, under sponsorship of the Alfred P. Sloan Foundation, and with the cooperation of semiconductor producers from Asia, Europe and the United States. Professors David A. Hodges and Robert C. Leachman are the project`s Co-Directors. The present report for JTEC is primarily based on data and analysis drawn from that continuing program. The CSM program is being conducted by faculty, graduate students and research staff from UC Berkeley`s Schools of Engineering and Business, and Department of Economics. Many of the participating firms are represented on the program`s Industry Advisory Board. The Board played an important role in defining the research agenda. A pilot study was conducted in 1991 with the cooperation of three semiconductor plants. The research plan and survey documents were thereby refined. The main phase of the CSM benchmarking study began in mid-1992 and will continue at least through 1997. reports are presented on the manufacture of integrated circuits; data storage; wireless technology; human-machine interfaces; and optoelectronics. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database.

  17. Phase equilibrium engineering

    CERN Document Server

    Brignole, Esteban Alberto

    2013-01-01

    Traditionally, the teaching of phase equilibria emphasizes the relationships between the thermodynamic variables of each phase in equilibrium rather than its engineering applications. This book changes the focus from the use of thermodynamics relationships to compute phase equilibria to the design and control of the phase conditions that a process needs. Phase Equilibrium Engineering presents a systematic study and application of phase equilibrium tools to the development of chemical processes. The thermodynamic modeling of mixtures for process development, synthesis, simulation, design and

  18. Phase Statistics of Soliton

    OpenAIRE

    Ho, Keang-Po

    2003-01-01

    The characteristic function of soliton phase jitter is found analytically when the soliton is perturbed by amplifier noise. In additional to that from amplitude jitter, the nonlinear phase noise due to frequency and timing jitter is also analyzed. Because the nonlinear phase noise is not Gaussian distributed, the overall phase jitter is also non-Gaussian. For a fixed mean nonlinear phase shift, the contribution of nonlinear phase noise from frequency and timing jitter decreases with distance ...

  19. 基于微流控芯片的固相萃取技术的研究进展%Advances of microfluidic chip-based on solid phase extraction technology

    Institute of Scientific and Technical Information of China (English)

    李江梅; 翟海云; 陈缵光; 苏子豪; 刘振平; 周清

    2014-01-01

    As one of advanced analysis techniques in recent years,microfluidic chips has possessed many advantages including high throughout,miniaturization,multi-function,integration and so on. Its researching object is mainly biochemical samples,where exist matrix effects and interference component,and they are against analysis. So it is significant to develop the technology in microfluidic chip for the use of purification and enrichment of samples. Furthermore,it is also one of the bottlenecks,which hard to break on the march of miniaturization and integration for microfluidic chip. An overview has been given on the different modes of SPE-based chip including open-tubular,packed column and monolithic column. Moreover,the characters and merits of SPE-based chips have been demonstrated in great detail in this overview. And at the same time,a prospect on the developments of microfluidic chips has been made.%作为近年来最前沿的分析技术之一,微流控芯片技术具有高通量、微型化、多功能和集成化等独特优势,目前,该技术主要以生命科学体系为研究对象。但由于生化样品存在基质效应与干扰组分,使得样品分析备受干扰。因此发展微流控芯片中的样品前处理技术,对于样品尤其是复杂的生物样品的纯化和富集极其重要,同时这也是微流控芯片系统走向集成化和微型化必须突破的瓶颈之一。本文针对应用广泛的固相萃取技术,重点综述了微流控芯片上固相萃取技术的几种不同模式即开管柱、填充柱以及整体柱的特点及优缺点,并对微流控芯片系统的发展做出了展望。

  20. Design of two-phase gyroscope driving power supply based on DDS technology%基于DDS技术的两相陀螺仪驱动电源设计

    Institute of Scientific and Technical Information of China (English)

    王志伟; 陆锦军; 李德军

    2016-01-01

    导航和定位是军用及民用航空器中的陀螺仪的最主要的功能,其运行情况直接影响到飞行器的安全,而为陀螺仪提供电能的多相电源的性能也决定了陀螺仪能否正常稳定工作。基于C8051F020及DDS芯片AD9952等搭建两相陀螺仪电源的1200 Hz波形发生电路,利用大功率MOS管电源:集成运放MP108为电路提供足够大的输出功率,通过软硬件滤波实现波形的平滑输出,使陀螺仪工作更顺畅精确。通过测试,该电源输出电压和频率值精度高、稳定性好、抗高频干扰能力强,实现了设计要求。%The navigation and position are the most important functions of the gyroscope used in military and civil aircrafts. The running condition of the gyroscope can affect the aircrafts’safety directly,and the multiphase power supply providing the electrical energy for the gyroscope determines whether the gyroscope can work stably. The C8051F020 and DDS chip AD9952 based 1 200 Hz waveform generating circuit of two⁃phase gyroscope power supply is described,in which the high⁃power MOS⁃FET power supply is used to provide the large enough output power for the integrated operational amplifier MP108 circuit. The smooth waveform output is realized with the hardware and software filtering,which can make the gyroscope work smoothly and accurately. The test results show that the output voltage and frequency of the power supply have high accuracy,good stability and great ability to resist the high⁃frequency interference,and can satisfy the design requirements.