WorldWideScience

Sample records for technology verification coatings

  1. ENVIRONMENTAL TECHNOLOGY VERIFICATION COATINGS AND COATING EQUIPMENT PROGRAM (ETV CCEP), FINAL TECHNOLOGY APPLICATIONS GROUP TAGNITE--TESTING AND QUALITY ASSURANCE PLAN (T/QAP)

    Science.gov (United States)

    The overall objective of the Environmental Testing and Verification Coatings and Coating Equipment Program is to verify pollution prevention and performance characteristics of coating technologies and make the results of the testing available to prospective coating technology use...

  2. ENVIRONMENTAL TECHNOLOGY VERIFICATION COATINGS AND COATING EQUIPMENT PROGRAM (ETV CCEP) HIGH TRANSFER EFFICIENCE SPRAY EQUIPMENT--GENERIC VERIFICATION PROTOCOL

    Science.gov (United States)

    The Environmental Technology Verification (ETV) Program has been established to verify the performance characteristics of innovative environmental technologies and report this objective information, thus, accelerating the entrance of these new technologies into the marketplace. V...

  3. Environmental Technology Verification Coatings and Coating Equipment Program (ETV CCEP) High Transfer Efficiency Spray Equipment--Generic Verification Protocol

    Science.gov (United States)

    The Environmental Technology Verification (ETV) Program has been established by the U.S. Environmental Protection Agency (EPA) to verify the performance characteristics of innovative environmental technologies across all media and report this objective information to the states, ...

  4. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, HVLP COATING EQUIPMENT, SHARPE MANUFACTURING COMPANY PLATINUM 2012 HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the Sharpe Platinum 2013 high-volume, low-pressure gravity-feed spray gun, hereafter referred to as the Sharpe Platinum, which is designed for use in automotive refinishing. The test coating chosen by Sharpe Manufacturi...

  5. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, HVLP COATING EQUIPMENT, SHARPE MANUFACTURING COMPANY PLATINUM 2012 HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the Sharpe Platinum 2013 high-volume, low-pressure gravity-feed spray gun, hereafter referred to as the Sharpe Platinum, which is designed for use in automotive refinishing. The test coating chosen by Sharpe Manufacturi...

  6. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT--EVERMORE PAINTS AND COATINGS INC. FORMULA 5 COATING

    Science.gov (United States)

    This report is of a test of the pollution prevention capabilities of a polyamide-epoxy-silicone modified paint coating. It was analyzed for volatile organic emissions, hazardous air pollutants, film thickness, gloss, appearance, MEK rub resistance, abrasion resistance and other ...

  7. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT--EVERMORE PAINTS AND COATINGS INC. FORMULA 5 COATING

    Science.gov (United States)

    This report is of a test of the pollution prevention capabilities of a polyamide-epoxy-silicone modified paint coating. It was analyzed for volatile organic emissions, hazardous air pollutants, film thickness, gloss, appearance, MEK rub resistance, abrasion resistance and other ...

  8. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: EXEL INDUSTRIAL AIRMIX SPRAY GUN

    Science.gov (United States)

    The Environmental Technology Verification Program has partnered with Concurrent Technologies Corp. to verify innovative coatings and coating equipment technologies for reducing air emissions. This report describes the performance of EXEL Industrial's Kremlin Airmix high transfer ...

  9. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: EXEL INDUSTRIAL AIRMIX SPRAY GUN

    Science.gov (United States)

    The Environmental Technology Verification Program has partnered with Concurrent Technologies Corp. to verify innovative coatings and coating equipment technologies for reducing air emissions. This report describes the performance of EXEL Industrial's Kremlin Airmix high transfer ...

  10. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: HVLP COATING EQUIPMENT, ITW AUTOMOTIVE REFINISHING, DEVILBISS FLG-631-318 HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the DeVilbiss FLG-631-318 high-volume, low-pressure gravity-feed spray gun, hereafter referred to as the DeVilbiss FLG, which is designed for use in automotive refinishing. The test coating chosen by ITW Automotive Refi...

  11. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: HVLP COATING EQUIPMENT, ITW AUTOMOTIVE REFINISHING, DEVILBISS GTI-600G, HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the DeVilbiss GTi-600G high-volume, low-pressure gravity-feed spray gun, hereafter referred to as the DeVilbiss GTi, which is designed for use in automotive refinishing. The test coating chosen by ITW Automotive Refinis...

  12. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: HVLP COATING EQUIPMENT, ITW AUTOMOTIVE REFINISHING, DEVILBISS GTI-600G, HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the DeVilbiss GTi-600G high-volume, low-pressure gravity-feed spray gun, hereafter referred to as the DeVilbiss GTi, which is designed for use in automotive refinishing. The test coating chosen by ITW Automotive Refinis...

  13. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: HVLP COATING EQUIPMENT, ITW AUTOMOTIVE REFINISHING, DEVILBISS FLG-631-318 HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the DeVilbiss FLG-631-318 high-volume, low-pressure gravity-feed spray gun, hereafter referred to as the DeVilbiss FLG, which is designed for use in automotive refinishing. The test coating chosen by ITW Automotive Refi...

  14. Biometric Technologies and Verification Systems

    CERN Document Server

    Vacca, John R

    2007-01-01

    Biometric Technologies and Verification Systems is organized into nine parts composed of 30 chapters, including an extensive glossary of biometric terms and acronyms. It discusses the current state-of-the-art in biometric verification/authentication, identification and system design principles. It also provides a step-by-step discussion of how biometrics works; how biometric data in human beings can be collected and analyzed in a number of ways; how biometrics are currently being used as a method of personal identification in which people are recognized by their own unique corporal or behavior

  15. ENVIRONMENTAL TECHNOLOGY VERIFICATION (ETV) PROGRAM: FUEL CELLS

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) Environmental Technology Verification (ETV) Program evaluates the performance of innovative air, water, pollution prevention and monitoring technologies that have the potential to improve human health and the environment. This techno...

  16. Environmental Technology Verification Program (ETV) Policy Compendium

    Science.gov (United States)

    The Policy Compendium summarizes operational decisions made to date by participants in the U.S. Environmental Protection Agency's (EPA's) Environmental Technology Verification Program (ETV) to encourage consistency among the ETV centers. The policies contained herein evolved fro...

  17. ENVIRONMENTAL TECHNOLOGY VERIFICATION (ETV) PROGRAM: GREEN BUILDING TECHNOLOGIES

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) Environmental Technology Verification (ETV) Program evaluates the performance of innovative air, water, pollution prevention and monitoring technologies that have the potential to improve human health and the environment. This techno...

  18. Extensible Technology-Agnostic Runtime Verification

    Directory of Open Access Journals (Sweden)

    Christian Colombo

    2013-02-01

    Full Text Available With numerous specialised technologies available to industry, it has become increasingly frequent for computer systems to be composed of heterogeneous components built over, and using, different technologies and languages. While this enables developers to use the appropriate technologies for specific contexts, it becomes more challenging to ensure the correctness of the overall system. In this paper we propose a framework to enable extensible technology agnostic runtime verification and we present an extension of polyLarva, a runtime-verification tool able to handle the monitoring of heterogeneous-component systems. The approach is then applied to a case study of a component-based artefact using different technologies, namely C and Java.

  19. Foundry Coating Technology: A Review

    DEFF Research Database (Denmark)

    Nwaogu, Ugochukwu Chibuzoh; Tiedje, Niels Skat

    2011-01-01

    is important. In this review, a detailed description of these topics and examples are provided where necessary. A potential area of research in foundry coating development, using sol-gel process is suggested. The application of sol-gel technology in the development of foundry coatings is a novel approach....

  20. Development of Ion-Plasma Technology of Deposition of the Nanostructure Bactericidal Coatings on Orthopaedic Implantats and Fixative Devices. Production of Pilot Samples for Verification of their Use in Clinic

    Directory of Open Access Journals (Sweden)

    V.A. Belous

    2013-11-01

    Full Text Available Technology for creating coatings based on titanium oxide, which have pronounced antibacterial properties manifested upon X-ray and UV irradiation has been developed. Biological research showed that the obtained coatings are biocompatible and do not exert cytotoxic effect on cultured fibroblasts, cellular composition of subcutaneous fat and restructure of bone tissue. It is found that nanostructured coatings with anatase structure and thickness of ≥9 microns, implanted with molybdenum ions, have an optimum combination of properties. The department for the deposition of antibacterial coatings on orthopedic implants is created.

  1. Consortium for Verification Technology Fellowship Report.

    Energy Technology Data Exchange (ETDEWEB)

    Sadler, Lorraine E. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2017-06-01

    As one recipient of the Consortium for Verification Technology (CVT) Fellowship, I spent eight days as a visiting scientist at the University of Michigan, Department of Nuclear Engineering and Radiological Sciences (NERS). During this time, I participated in multiple department and research group meetings and presentations, met with individual faculty and students, toured multiple laboratories, and taught one-half of a one-unit class on Risk Analysis in Nuclear Arms control (six 1.5 hour lectures). The following report describes some of the interactions that I had during my time as well as a brief discussion of the impact of this fellowship on members of the consortium and on me/my laboratory’s technical knowledge and network.

  2. ENVIRONMENTAL TECHNOLOGY VERIFICATION (ETV) PROGRAM CASE STUDIES: DEMONSTRATING PROGRAM OUTCOMES

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) Environmental Technology Verification (ETV) Program evaluates the performance of innovative air, water, pollution prevention and monitoring technologies that have the potential to improve human health and the environment. This bookle...

  3. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT - PERFORMANCE VERIFICATION OF THE W.L. GORE & ASSOCIATES GORE-SORBER SCREENING SURVEY

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) has created the Environmental Technology Verification Program (ETV) to facilitate the deployment of innovative or improved environmental technologies through performance verification and dissemination of information. The goal of the...

  4. Environmental Technology Verification: Test Report of Mobile Source Selective Catalytic Reduction--Nett Technologies, Inc., BlueMAX 100 version A urea-based selective catalytic reduction technology

    Science.gov (United States)

    Nett Technologies’ BlueMAX 100 version A Urea-Based SCR System utilizes a zeolite catalyst coating on a cordierite honeycomb substrate for heavy-duty diesel nonroad engines for use with commercial ultra-low–sulfur diesel fuel. This environmental technology verification (ETV) repo...

  5. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: ECR TECHNOLOGIES, INC., EARTHLINKED GROUND-SOURCE HEAT PUMP WATER HEATING SYSTEM

    Science.gov (United States)

    EPA has created the Environmental Technology Verification program to provide high quality, peer reviewed data on technology performance. This data is expected to accelerate the acceptance and use of improved environmental protection technologies. The Greenhouse Gas Technology C...

  6. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: ECR TECHNOLOGIES, INC., EARTHLINKED GROUND-SOURCE HEAT PUMP WATER HEATING SYSTEM

    Science.gov (United States)

    EPA has created the Environmental Technology Verification program to provide high quality, peer reviewed data on technology performance. This data is expected to accelerate the acceptance and use of improved environmental protection technologies. The Greenhouse Gas Technology C...

  7. Constitutional and legal implications of arms control verification technologies

    Energy Technology Data Exchange (ETDEWEB)

    Tanzman, E.A.; Haffenden, R.

    1992-09-01

    United States law can both help and hinder the use of instrumentation as a component of arms control verification in this country. It can foster the general use of sophisticated verification technologies, where such devices are consistent with the value attached to privacy by the Fourth Amendment to the United States Constitution. On the other hand, law can hinder reliance on devices that cross this constitutional line, or where such technology itself threatens health, safety, or environment as such threats are defined in federal statutes. The purpose of this conference paper is to explain some of the lessons that have been learned about the relationship between law and verification technologies in the hope that law can help more than hinder. This paper has three parts. In order to start with a common understanding, part I will briefly describe the hierarchy of treaties, the Constitution, federal statutes, and state and local laws. Part 2 will discuss how the specific constitutional requirement that the government respect the right of privacy in all of its endeavors may affect the use of verification technologies. Part 3 will explain the environmental law constraints on verification technology as exemplified by the system of on-site sampling embodied in the current Rolling Text of the Draft Chemical Weapons Convention.

  8. Environmental Technology Verification Report - Electric Power and Heat Production Using Renewable Biogas at Patterson Farms

    Science.gov (United States)

    The U.S. EPA operates the Environmental Technology Verification program to facilitate the deployment of innovative technologies through performance verification and information dissemination. A technology area of interest is distributed electrical power generation, particularly w...

  9. Environmental Technology Verification Report - Electric Power and Heat Production Using Renewable Biogas at Patterson Farms

    Science.gov (United States)

    The U.S. EPA operates the Environmental Technology Verification program to facilitate the deployment of innovative technologies through performance verification and information dissemination. A technology area of interest is distributed electrical power generation, particularly w...

  10. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: DUST SUPPRESSANT PRODUCTS: NORTH AMERICAN SALT COMPANY'S DUSTGARD

    Science.gov (United States)

    Dust suppressant products used to control particulate emissions from unpaved roads are among the technologies evaluated by the Air Pollution Control Technology (APCT) Verification Center, part of the U.S. Environmental Protection Agency's Environmental Technology Verification (ET...

  11. Environmental Technology Verification: Baghouse Filtration Products--TDC Filter Manufacturing, Inc., SB025 Filtration Media

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) has created the Environmental Technology Verification (ETV) Program to facilitate the deployment of innovative or improved environmental technologies through performance verification and dissemination of information. ETV seeks to ach...

  12. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT; GROUNDWATER SAMPLING TECHNOLOGIES; W.L. GORE AND ASSOCIATES, INC., GORE-SORBER WATER QUALITY MONITORING

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) has created the Environmental Technology Verification Program (ETV) to facilitate the deployment of innovative or improved environmental technologies through performance verification and dissemination of information. The goal of the...

  13. Field analytical technology verification: The ETV Site Characterization Program

    Energy Technology Data Exchange (ETDEWEB)

    Einfeld, W. [Sandia National Labs., Albuquerque, NM (United States); Jenkins, R.A.; Dindal, A.B. [Oak Ridge National Lab., TN (United States)

    1998-06-01

    Innovative field characterization and monitoring technologies are often slow to be adopted by the environmental engineering/consulting community because of concerns that their performance has not been proven by an independent testing body, and/or they have not received the EPA`s blessing on a regional or national level. The purpose of the EPA Environmental Technology Verification (ETV) Site Characterization Pilot, a joint effort between EPA and DOE, is to accelerate the acceptance of technologies that reduce the cost and increase the speed of environmental clean-up and monitoring. Technology verifications that have been completed or are underway include: in situ technologies for the characterization of sub-surface hydrocarbon plumes, field-portable GC/MS systems, field-portable X-ray fluorescence analyzers, soil sampling technologies, field-portable PCB analyzers, analyzers for VOC analysis at the wellhead, and decision support software systems to aid site sample collection and contaminant plume definition. The verification process follows a somewhat generic pathway. A user-community need is identified, the vendor community is canvassed, and relevant, interested companies are selected. A demonstration plan is prepared by the verification organization and circulated to participants prior to the field activities. Field trials are normally held at two geologically or environmentally different sites and typically require one week at each site. Samples (soil, soil gas, water, surface wipe etc.) provided to the vendor at the demonstration include site-specific samples and standards or performance evaluation samples. Sample splits are sent to a pre-selected laboratory for analysis using a reference method. Laboratory data are used for comparison with field technology results during the data analysis phase of the demonstration.

  14. Coatings Technology Integration Office (CTIO)

    Data.gov (United States)

    Federal Laboratory Consortium — CTIO serves as the Air Force's central resource for aircraft coating systems and their applications. CTIO's primary objectives are pollution prevention and improved...

  15. POWDER COATINGS: A TECHNOLOGY REVIEW

    Science.gov (United States)

    In 1995, surface coatings accounted for nearly 2.55 million Mg of volatile organic compound (VOC) emissions nationally, which is more than 12% of VOC emissions from all sources. In recent years, powder coatings have been steadily gaining popularity as an alternative to solvent-bo...

  16. Dry coating, a novel coating technology for solid pharmaceutical dosage forms.

    Science.gov (United States)

    Luo, Yanfeng; Zhu, Jesse; Ma, Yingliang; Zhang, Hui

    2008-06-24

    Dry coating is a coating technology for solid pharmaceutical dosage forms derived from powder coating of metals. In this technology, powdered coating materials are directly coated onto solid dosage forms without using any solvent, and then heated and cured to form a coat. As a result, this technology can overcome such disadvantages caused by solvents in conventional liquid coating as serious air pollution, high time- and energy-consumption and expensive operation cost encountered by liquid coating. Several dry coating technologies, including plasticizer-dry-coating, electrostatic-dry-coating, heat-dry-coating and plasticizer-electrostatic-heat-dry-coating have been developed and extensively reported. This mini-review summarized the fundamental principles and coating processes of various dry coating technologies, and thoroughly analyzed their advantages and disadvantages as well as commercialization potentials.

  17. Surface coatings as xenon diffusion barriers on plastic scintillators : Improving Nuclear-Test-Ban Treaty verification

    OpenAIRE

    Bläckberg, Lisa

    2011-01-01

    This thesis investigates the ability of transparent surface coatings to reduce xenon diffusion into plastic scintillators. The motivation for the work is improved radioxenon monitoring equipment, used with in the framework of the verification regime of the Comprehensive Nuclear-Test-Ban Treaty. A large part of the equipment used in this context incorporates plastic scintillators which are in direct contact with the radioactive gas to be detected. One problem with such setup is that radioxenon...

  18. Coating Technologies for Insensitive Munitions

    Science.gov (United States)

    2006-09-01

    GM 9540P is an accelerated cyclic corrosion test that was developed by the automotive industry to more accurately replicate long-term outdoor...Impact resistance can be described as a paint property that 23 quantitatively characterizes the adhesion and flexibility of a coating with...will be tested as previous panels. 1. Polyurea over Pitt-Char XP, 2. Pitt-Char XP over Multiprime 97-680 primer, with Pitthane urethane TC, 3

  19. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT - PORTABLE GAS CHROMATOGRAPH ELECTRONIC SENSOR TECHNOLOGY MODEL 4100

    Science.gov (United States)

    The U.S. Environmental Protection Agency, through the Environmental Technology Verification Program, is working to accelerate the acceptance and use of innovative technologies that improve the way the United States manages its environmental problems. As part of this program, the...

  20. Flight testing vehicles for verification and validation of hypersonics technology

    Science.gov (United States)

    Sacher, Peter W.

    1995-03-01

    Hypersonics technology has obtained renewed interest since various concepts for future completely reusable Space Transportation Systems (STS) using airbreathing propulsion for the parts of atmospheric flight have been proposed in different countries (e.g. US, CIS, Japan, France, Germany, and UK). To cover major developments in those countries, AGARD FDP has formed the Working Group 18 on 'Hypersonic Experimental and Computational Capabilities - Improvement and Validation'. Of major importance for the proof of feasibility for all these concepts is the definition of an overall convincing philosophy for a 'hypersonics technology development and verification concept' using ground simulation facilities (both experimental and numerical) and flight testing vehicles. Flying at hypersonic Mach numbers using airbreathing propulsion requires highly sophisticated design tools to provide reliable prediction of thrust minus aerodynamic drag to accelerate the vehicle during ascent. Using these design tools, existing uncertainties have to be minimized by a carefully performed code validation process. To a large degree the database required for this validation cannot be obtained on ground. In addition thermal loads due to hypersonic flow have to be predicted accurately by aerothermodynamic flow codes to provide the inputs needed to decide on materials and structures. Heat management for hypersonic flight vehicles is one of the key-issues for any kind of successful flight demonstration. This paper identifies and discusses the role of flight testing during the verification and validation process of advanced hypersonic technology needed for flight in the atmosphere with hypersonic Mach numbers using airbreathing propulsion systems both for weapons and space transportation systems.

  1. Arms control verification: The technologies that make it possible

    Energy Technology Data Exchange (ETDEWEB)

    Tsipis, K.; Hafemeister, D.W.; Janeway, P.

    1986-01-01

    This book presents papers on arms control verification. Topics considered include the politics of treaty verification and compliance, national security, remote sensing, image processing, image enhancement by digital computer, charge-coupled device image sensors, radar imaging, infrared surveillance, monitoring, seismological aspects, satellite verifications, seismic verification, and verifying a fissile material production freeze.

  2. Laser Coating Technology; A Commercial Reality

    Science.gov (United States)

    Blake, Andrew G.; Mangaly, A. A.; Everett, M. A.; Hammeke, A. H.

    1988-10-01

    Commercial acceptance of laser coating technology suffered for many years due to questions about its economic viability. During this period, however, many companies, universities, and government research groups were busy developing the technology to overcome these questions. Today, laser coating technology is having a major impact as a high quality, economical method of hardfacing for wear and corrosion resistance in several key industries. This has occurred because of advances in five key areas: 1. High power laser design 2. Method of alloy deposition, and associated hardware 3. In-process feed back control system hardware/software development 4. Alloy systems 5. Marketing/sales sophistication High power lasers have improved in mode stability, power conversion efficiency, and optical flexibility (reflective vs. transmissive materials). This has enabled the process engineer to increase deposition efficiency, and maintain flexibility on the use of optics specifically designed for a user application. Improvements in the method of alloy deposition have led to developments such as the DPF system with specialized nozzles developed for specific user applications. Another effective technique includes the use of pre-fabricated cast alloy chips that are welded to the component surface on the specific area requiring protection. The development of feedback control systems that integrate process control software with hard tooling, the laser, and the alloy delivery system are greatly improving process reliability and product quality. Because of this, "in-process" quality control is becoming a viable alternative to traditional methods of quality control. Metallurgical evaluations of some of the most widely used hardfacing alloys and base materials have been investigated by numerous researchers. Analysis has confirmed that laser applied coatings are of high metallurgical quality, extremely low in dilution, and distort less due to low heat input. The technology can also be used to

  3. Advanced Communication Technology Satellite (ACTS) multibeam antenna technology verification experiments

    Science.gov (United States)

    Acosta, Roberto J.; Larko, Jeffrey M.; Lagin, Alan R.

    1992-01-01

    The Advanced Communication Technology Satellite (ACTS) is a key to reaching NASA's goal of developing high-risk, advanced communications technology using multiple frequency bands to support the nation's future communication needs. Using the multiple, dynamic hopping spot beams, and advanced on board switching and processing systems, ACTS will open a new era in communications satellite technology. One of the key technologies to be validated as part of the ACTS program is the multibeam antenna with rapidly reconfigurable hopping and fixed spot beam to serve users equipped with small-aperature terminals within the coverage areas. The proposed antenna technology experiments are designed to evaluate in-orbit ACTS multibeam antenna performance (radiation pattern, gain, cross pol levels, etc.).

  4. GUIDE TO CLEANER TECHNOLOGIES: ORGANIC COATING REPLACEMENTS

    Science.gov (United States)

    This guide describes available and emerging cleaner technologies that can be used to reduce emissions and wastes from paint and coatings applications. Environmental concerns and increasing costs of organic chemicals and metals are leading to changes in the formulation of organic ...

  5. Battery Technology Life Verification Test Manual Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Jon P. Christophersen

    2012-12-01

    The purpose of this Technology Life Verification Test (TLVT) Manual is to help guide developers in their effort to successfully commercialize advanced energy storage devices such as battery and ultracapacitor technologies. The experimental design and data analysis discussed herein are focused on automotive applications based on the United States Advanced Battery Consortium (USABC) electric vehicle, hybrid electric vehicle, and plug-in hybrid electric vehicle (EV, HEV, and PHEV, respectively) performance targets. However, the methodology can be equally applied to other applications as well. This manual supersedes the February 2005 version of the TLVT Manual (Reference 1). It includes criteria for statistically-based life test matrix designs as well as requirements for test data analysis and reporting. Calendar life modeling and estimation techniques, including a user’s guide to the corresponding software tool is now provided in the Battery Life Estimator (BLE) Manual (Reference 2).

  6. Microencapsulation Technologies for Corrosion Protective Coating Applications

    Science.gov (United States)

    Li, Wenyan; Buhrow, Jerry; Jolley, Scott; Calle, Luz; Pearman, Benjamin; Zhang, Xuejun

    2015-01-01

    Microencapsulation technologies for functional smart Coatings for autonomous corrosion control have been a research area of strong emphasis during the last decade. This work concerns the development of pH sensitive micro-containers (microparticles and microcapsules) for autonomous corrosion control. This paper presents an overview of the state-of-the-art in the field of microencapsulation for corrosion control applications, as well as the technical details of the pH sensitive microcontainer approach, such as selection criteria for corrosion indicators and corrosion inhibitors; the development and optimization of encapsulation methods; function evaluation before and after incorporation of the microcontainers into coatings; and further optimization to improve coating compatibility and performance.

  7. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, SHARPE MANUFACTURING TITANIUM T1-CG SPRAY GUN

    Science.gov (United States)

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, the pollution prevention capabilities of a high transfer efficiency liquid spray gun was tested. This ...

  8. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, ANEST IWATA CORPORATION W400-LV SPRAY GUN

    Science.gov (United States)

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, the pollution prevention capabilities of a high transfer efficiency liquid spray gun was tested. This ...

  9. ENVIRONMENTAL TECHNOLOGY VERIFICATION (ETV) PROGRAM CASE STUDIES: DEMONSTRATING PROGRAM OUTCOMES, VOLUME II

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) Environmental Technology Verification (ETV) Program evaluates the performance of innovative air, water, pollution prevention and monitoring technologies that have the potential to improve human health and the environment. This bookle...

  10. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT - PHOTOACOUSTIC SPECTROPHOTOMATER INNOVA AIR TECH INSTRUMENTS MODEL 1312 MULTI-GAS MONITOR

    Science.gov (United States)

    The U.S. Environmental Protection Agency, Through the Environmental Technology Verification Program, is working to accelerate the acceptance and use of innovative technologies that improve the way the United States manages its environmental problems. This report documents demons...

  11. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, ANEST IWATA CORPORATION W400-LV SPRAY GUN

    Science.gov (United States)

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, the pollution prevention capabilities of a high transfer efficiency liquid spray gun was tested. This ...

  12. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, SHARPE MANUFACTURING TITANIUM T1-CG SPRAY GUN

    Science.gov (United States)

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, the pollution prevention capabilities of a high transfer efficiency liquid spray gun was tested. This ...

  13. Environmental Technology Verification: Baghouse filtration products--W.L. Gore & Associates L3650 filtration media (tested November--December 2009)

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) has created the Environmental Technology Verification (ETV) Program to facilitate the deployment of innovative or improved environmental technologies through performance verification and dissemination of information. ETV seeks to ach...

  14. ENVIRONMENTAL TECHNOLOGY VERIFICATION PROGRAM: PROTOCOL FOR THE VERIFICATION OF GROUTING MATERIALS FOR INFRASTRUCTURE REHABILITATION AT THE UNIVERSITY OF HOUSTON - CIGMAT

    Science.gov (United States)

    This protocol was developed under the Environmental Protection Agency's Environmental Technology Verification (ETV) Program, and is intended to be used as a guide in preparing laboratory test plans for the purpose of verifying the performance of grouting materials used for infra...

  15. TET-1- A German Microsatellite for Technology On -Orbit Verification

    Science.gov (United States)

    Föckersperger, S.; Lattner, K.; Kaiser, C.; Eckert, S.; Bärwald, W.; Ritzmann, S.; Mühlbauer, P.; Turk, M.; Willemsen, P.

    2008-08-01

    Due to the high safety standards in the space industry every new product must go through a verification process before qualifying for operation in a space system. Within the verification process the payload undergoes a series of tests which prove that it is in accordance with mission requirements in terms of function, reliability and safety. Important verification components are the qualification for use on the ground as well as the On-Orbit Verification (OOV), i.e. proof that the product is suitable for use under virtual space conditions (on-orbit). Here it is demonstrated that the product functions under conditions which cannot or can only be partially simulated on the ground. The OOV-Program of the DLR serves to bridge the gap between the product tested and qualified on the ground and the utilization of the product in space. Due to regular and short-term availability of flight opportunities industry and research facilities can verify their latest products under space conditions and demonstrate their reliability and marketability. The Technologie-Erprobungs-Tr&äger TET (Technology Experiments Carrier) comprises the core elements of the OOV Program. A programmatic requirement of the OOV Program is that a satellite bus already verified in orbit be used in the first segment of the program. An analysis of suitable satellite buses showed that a realization of the TET satellite bus based on the BIRD satellite bus fulfilled the programmatic requirements best. Kayser-Threde was selected by DLR as Prime Contractor to perform the project together with its major subcontractors Astro- und Feinwerktechnik, Berlin for the platform development and DLR-GSOC for the ground segment development. TET is now designed to be a modular and flexible micro-satellite for any orbit between 450 and 850 km altitude and inclination between 53° and SSO. With an overall mass of 120 kg TET is able to accommodate experiments of up to 50 kg. A multipurpose payload supply systemThere is

  16. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: MOBILE SOURCE RETROFIT AIR POLLUTION CONTROL DEVICES: CLEAN CLEAR FUEL TECHNOLOGIES, INC.’S, UNIVERSAL FUEL CELL

    Science.gov (United States)

    The U.S. EPA's Office of Research and Development operates the Environmental Technology Verification (ETV) program to facilitate the deployment of innovative technologies through performance verification and information dissemination. Congress funds ETV in response to the belief ...

  17. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT--BAGHOUSE FILTRATION PRODUCTS, W.L. GORE ASSOC., INC.

    Science.gov (United States)

    The U.S. Environmental Protection Agency Air Pollution Control Technology (APCT) Verification Center evaluates the performance of baghouse filtration products used primarily to control PM2.5 emissions. This verification statement summarizes the test results for W.L. Gore & Assoc....

  18. Development of evaluation and performance verification technology for radiotherapy radiation

    Energy Technology Data Exchange (ETDEWEB)

    Kim, J. Y.; Jang, S. Y.; Kim, B. H. and others

    2005-02-15

    No matter how much the importance is emphasized, the exact assessment of the absorbed doses administered to the patients to treat the various diseases such as lately soaring malignant tumors with the radiotherapy practices is the most important factor. In reality, several over-exposed patients from the radiotherapy practice become very serious social issues. Especially, the development of a technology to exactly assess the high doses and high energies (In general, dose administered to the patients with the radiotherapy practices are very huge doses, and they are about three times higher than the lethal doses) generated by the radiation generators and irradiation equipment is a competing issue to be promptly conducted. Over fifty medical centers in Korea operate the radiation generators and irradiation equipment for the radiotherapy practices. However, neither the legal and regulatory systems to implement a quality assurance program are sufficiently stipulated nor qualified personnel who could run a program to maintain the quality assurance and control of those generators and equipment for the radiotherapy practices in the medical facilities are sufficiently employed. To overcome the above deficiencies, a quality assurance program such as those developed in the technically advanced countries should be developed to exactly assess the doses administered to patients with the radiotherapy practices and develop the necessary procedures to maintain the continuing performance of the machine or equipment for the radiotherapy. The QA program and procedures should induce the fluent calibration of the machine or equipment with quality, and definitely establish the safety of patients in the radiotherapy practices. In this study, a methodology for the verification and evaluation of the radiotherapy doses is developed, and several accurate measurements, evaluations of the doses delivered to patients and verification of the performance of the therapy machine and equipment are

  19. Applying a novel electrostatic dry powder coating technology to pellets.

    Science.gov (United States)

    Yang, Qingliang; Ma, Yingliang; Zhu, Jesse

    2015-11-01

    The present study aimed to apply a novel dry powder technology to coat pellets with different coating materials grounded into fine powders. Piroxicam, a non-steroidal anti-inflammatory drug, was used as the active pharmaceutical ingredient (API). Eudragit® EPO, Eudragit® RS/RL and Acryl EZE were used as the coating materials to achieve immediate release, sustained release and delayed release, respectively. Three steps including preheating, powder adhesion and curing were carried out to form the coating film while liquid plasticizers were used to decrease the glass transition temperature of coating powders and also served to reduce the electrical resistance of pellets. Results of SEM indicated coating film could be better formed by increasing curing temperature or extending curing time. Dissolution tests showed that three different drug release profiles, including immediate release, sustained release and delayed release, were achieved by this coating technology with different coating formulations. And the dry powder coated pellets using this developed technology exhibited an excellent stability with 1 month at 40 °C/75% RH. The coating procedure could be shortened to within 120 min and the use of fluidized hot air was minimized, both cutting down the overall cost dramatically compared to organic solvent coating and aqueous coating. All results demonstrated that the novel electrostatic dry powder coating method is a promising technology in the pharmaceutical coating industry.

  20. 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)

  1. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: DEVILBISS JGHV-531-46FF HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the DeVilbiss JGHV-531-46FF high-volume, low-pressure pressure-feed spray gun, hereafter referred to as the DeVilbiss JGHV, which is designed for use in industrial finishing. The test coating chosen by ITW Industrial Fi...

  2. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: DEVILBISS JGHV-531-46FF HVLP SPRAY GUN

    Science.gov (United States)

    This report presents the results of the verification test of the DeVilbiss JGHV-531-46FF high-volume, low-pressure pressure-feed spray gun, hereafter referred to as the DeVilbiss JGHV, which is designed for use in industrial finishing. The test coating chosen by ITW Industrial Fi...

  3. Development of requirements tracking and verification technology for the NPP software

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Chul Hwan; Kim, Jang Yeol; Lee, Jang Soo; Song, Soon Ja; Lee, Dong Young; Kwon, Kee Choon

    1998-12-30

    Searched and analyzed the technology of requirements engineering in the areas of aerospace and defense industry, medical industry and nuclear industry. Summarized the status of tools for the software design and requirements management. Analyzed the software design methodology for the safety software of NPP. Development of the design requirements for the requirements tracking and verification system. Development of the background technology to design the prototype tool for the requirements tracking and verification.

  4. ETV Program Report: Coatings for Wastewater Collection Systems - Standard Cement Materials, Epoxy Coating 4553

    Science.gov (United States)

    The Standard Cement Materials, Inc. Standard Epoxy Coating 4553™ (SEC 4553) epoxy coating used for wastewater collection system rehabilitation was evaluated by EPA’s Environmental Technology Verification Program under laboratory conditions at the Center for Innovative Grouting Ma...

  5. ETV Program Report: Coatings for Wastewater Collection Systems - Standard Cement Materials, Epoxy Coating 4553

    Science.gov (United States)

    The Standard Cement Materials, Inc. Standard Epoxy Coating 4553™ (SEC 4553) epoxy coating used for wastewater collection system rehabilitation was evaluated by EPA’s Environmental Technology Verification Program under laboratory conditions at the Center for Innovative Grouting Ma...

  6. SOME ASPECTS OF TECHNOLOGICAL PROCESS OF CASTINGS IN COATED CHILL

    Directory of Open Access Journals (Sweden)

    A. N. Krutilin

    2010-01-01

    Full Text Available Analysis of technological process of pouring into coated iron chill is presented. It is shown that the process is very sensitive to the change of technological parameters, is rather complex in regulation and control.

  7. VZLUSAT-1: verification of new materials and technologies for space

    Science.gov (United States)

    Daniel, Vladimir; Urban, Martin; Nentvich, Ondrej; Stehlikova, Veronika

    2016-09-01

    CubeSats are a good opportunity to test new technologies and materials on orbit. These innovations can be later used for improving of properties and life length of Cubesat or other satellites as well. VZLUSAT-1 is a small satellite from the CubeSat family, which will carry a wide scale of payloads with different purposes. The poster is focused on measuring of degradation and properties measurement of new radiation hardened composite material in orbit due to space environment. Material properties changes can be studied by many methods and in many disciplines. One payload measures mechanical changes in dependence on Young's modulus of elasticity which is got from non-destructive testing by mechanical vibrations. The natural frequencies we get using Fast Fourier Transform. The material is tested also by several thermometers which measure heat distribution through the composite, as well as reflectivity in dependence on different coatings. The satellite also will measure the material radiation shielding properties. There are PIN diodes which measure the relative shielding efficiency of composite and how it will change in time in space environment. Last one of material space testing is measurement of outgassing from tested composite material. It could be very dangerous for other parts of satellite, like detectors, when anything was outgassing, for example water steam. There are several humidity sensors which are sensitive to steam and other gases and measures temperatures as well.

  8. Application of Coating Technology for Accident Tolerant Fuel Cladding

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hyun-Gil; Kim, Il-Hyun; Jung, Yang-Il; Park, Dong-Jun; Park, Jeong-Yong; Koo, Yang-Hyun [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2014-10-15

    To commercialize the ATF cladding concepts, various factors are considered, such as safety under normal and accident conditions, economy for the fuel cycle, and developing development challenges, and schedule. From the proposed concepts, it is known that the cladding coating, FeCrAl alloy, and Zr-Mo claddings are considered as a near/mid-term application, whereas the SiC material is considered as a long-term application. Among them, the benefit of cladding coating on Zr-based alloys is the fuel cycle economy regarding the manufacturing, neutron cross section, and high tritium permeation characteristics. However, the challenge of cladding coating on Zr-based alloys is the lower oxidation resistance and mechanical strength at high-temperature than other concepts. Another important point is the adhesion property between the Zr-based alloy and coating materials. As an improved coating technology compared to a previous study, a 3D laser coating technology supplied with Cr powders is considered to make a coated cladding because it is possible to make a coated layer on the tubular cladding surface by controlling the 3-diminational axis. We are systematically studying the laser beam power, inert gas flow, cooling of the cladding tube, and powder control as key points to develop 3D laser coating technology. After Cr-coating on the Zr-based cladding, ring compression and ring tensile tests were performed to evaluate the adhesion property between a coated layer and Zr-based alloy tube at room temperature (RT), and a high-temperature oxidation test was conducted to evaluate the oxidation behavior at 1200 .deg. C of the coated tube samples. A 3D laser coating method supplied with Cr powders was developed to decrease the high-temperature oxidation rate in a steam environment through a systematic study for various coating parameters, and a Cr-coated Zircaloy-4 cladding tube of 100 mm in length to the axial direction can be successfully manufactured.

  9. Platinum and Iridium Coatings Obtained by Double Glow Plasma Technology

    Institute of Scientific and Technical Information of China (English)

    WU Wangping; CHEN Zhaofeng; CHEN Zhou; CONG Xiangna; QIU Jinlian

    2012-01-01

    Pt and Ir coatings were produced by double glow plasma technology on the surface of Ti alloy substrates.The chemical compositions of the coatings were determined by X-ray diffraction and X-ray photoelectron spectroscopy.The microstructure and morphology of the coatings were observed by scanning electron microscopy.The hardness and elastic modulus of the coatings were estimated by nanoindentation.The measurements of adhesive forces of the coatings were performed with scratch tester.The results indicated that the Pt and Ir coatings displayed the preferred (220) orientation due to the initial nuclei with preferred growth on the surface of the substrates.The interface between the Pt coating and substrate exhibited no evidence of delamination.The Ir coating was composed of irregular columnar grains with many nanovoids at the interface between the coating and substrate.The mean values of hardness for Pt and Ir coatings were 0.9 GPa and 9 GPa,respectively.The elastic modulus of Pt and Ir coatings were 178 GPa and 339 GPa,respectively.The adhesive forces of the Pt and Ir coatings were about 66.4 N and 55 N,respectively.The Pt and Ir coatings adhered well to the Ti alloy substrates.

  10. ENVIRONMENTAL TECHNOLOGY VERIFICATION, TEST REPORT OF CONTROL OF BIOAEROSOLS IN HVAC SYSTEMS, AIRFLOW PRODUCTS AFP30

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the AFP30 air filter for dust and bioaerosol filtration manufactured by Airflow Products. The pressure drop across the filter was 62 Pa clean and 247 Pa dust loaded. The filtration effici...

  11. U.S. EPA Environmental Technology Verification Program, the Founder of the ETV Concept

    Science.gov (United States)

    The U.S. EPA Environmental Technology Verification (ETV) Program develops test protocols and verifies the performance of innovative technologies that have the potential to improve protection of human health and the environment. The program was created in 1995 to help accelerate t...

  12. Technology diffusion of a different nature: Applications of nuclear safeguards technology to the chemical weapons verification regime

    Energy Technology Data Exchange (ETDEWEB)

    Kadner, S.P. [Aquila Technologies Group, Inc., Albuquerque, NM (United States); Reisman, A. [Brookhaven National Lab., Upton, NY (United States); Turpen, E. [Aquila Technologies Group, Inc., Cambridge, MA (United States)

    1996-10-01

    The following discussion focuses on the issue of arms control implementation from the standpoint of technology and technical assistance. Not only are the procedures and techniques for safeguarding nuclear materials undergoing substantial changes, but the implementation of the Chemical Weapons Convention (CWC) and the Biological Weapons Convention (BWC) will give rise to technical difficulties unprecedented in the implementation of arms control verification. Although these regimes present new challenges, an analysis of the similarities between the nuclear and chemical weapons non-proliferation verification regimes illustrates the overlap in technological solutions. Just as cost-effective and efficient technologies can solve the problems faced by the nuclear safeguards community, these same technologies offer solutions for the CWC safeguards regime. With this in mind, experts at the Organization for the Prohibition of Chemical Weapons (OPCW), who are responsible for verification implementation, need to devise a CWC verification protocol that considers the technology already available. The functional similarity of IAEA and the OPCW, in conjunction with the technical necessities of both verification regimes, should receive attention with respect to the establishment of a technical assistance program. Lastly, the advanced status of the nuclear and chemical regime vis-a-vis the biological non-proliferation regime can inform our approach to implementation of confidence building measures for biological weapons.

  13. Facial Verification Technology for Use In Atm Transactions

    OpenAIRE

    Aru, Okereke Eze

    2013-01-01

    There is an urgent need for improving security in banking region. With the birth of the Automatic Teller Machines, banking became a lot easier though with its own troubles of insecurity. Due to tremendousincrease in the number of criminals and their activities, the ATM has become insecure. ATM systems today use no more than an access card and PIN for identity verification. The recent progress in biometric identification techniques, including finger printing, retina scanning, and facial recogn...

  14. Progress in advanced high temperature turbine materials, coatings, and technology

    Science.gov (United States)

    Freche, J. C.; Ault, G. M.

    1978-01-01

    Advanced materials, coatings, and cooling technology is assessed in terms of improved aircraft turbine engine performance. High cycle operating temperatures, lighter structural components, and adequate resistance to the various environmental factors associated with aircraft gas turbine engines are among the factors considered. Emphasis is placed on progress in development of high temperature materials for coating protection against oxidation, hot corrosion and erosion, and in turbine cooling technology. Specific topics discussed include metal matrix composites, superalloys, directionally solidified eutectics, and ceramics.

  15. Environmental Technology Verification: Supplement to Test/QA Plan for Biological and Aerosol Testing of General Ventilation Air Cleaners; Bioaerosol Inactivation Efficiency by HVAC In-Duct Ultraviolet Light Air Cleaners

    Science.gov (United States)

    The Air Pollution Control Technology Verification Center has selected general ventilation air cleaners as a technology area. The Generic Verification Protocol for Biological and Aerosol Testing of General Ventilation Air Cleaners is on the Environmental Technology Verification we...

  16. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT - BAGHOUSE FILTRATION PRODUCTS - W.L. GORE & ASSOCIATES, INC. L4347 FILTER SAMPLE

    Science.gov (United States)

    Baghouse filtration products (BFPs) were evaluated by the Air Pollution Control Technology (APCT) pilot of the Environmental Technology Verification (ETV) Program. The performance factor verified was the mean outlet particle concentration for the filter fabric as a function of th...

  17. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT - BAGHOUSE FILTRATION PRODUCTS - BASF CORPORATION AX/BA-14/9-SAXP FILTER SAMPLE

    Science.gov (United States)

    Baghouse filtration products (BFPs) were evaluated by the Air Pollution Control Technology (APCT) pilot of the Environmental Technology Verification (ETV) Program. The performance factor verified was the mean outlet particle concentration for the filter fabric as a function of th...

  18. GENERIC VERIFICATION PROTOCOL FOR DETERMINATION OF EMISSIONS REDUCTIONS FROM SELECTIVE CATALYTIC REDUCTIONS CONTROL TECHNOLOGIES FOR HIGHWAY, NONROAD, AND STATIONARY USE DIESEL ENGINES

    Science.gov (United States)

    The protocol describes the Environmental Technology Verification (ETV) Program's considerations and requirements for verification of emissions reduction provided by selective catalytic reduction (SCR) technologies. The basis of the ETV will be comparison of the emissions and perf...

  19. ENVIORNMENTAL TECHNOLOGY VERIFICATION REPORT: ANEST IWATA CORPORATION LPH400-LV HVLP SPRAY GUN

    Science.gov (United States)

    This Enviornmental Technology Verification reports on the characteristics of a paint spray gun. The research showed that the spray gun provided absolute and relative increases in transfer efficiency over the base line and provided a reduction in the use of paint.

  20. ENVIORNMENTAL TECHNOLOGY VERIFICATION REPORT: ANEST IWATA CORPORATION LPH400-LV HVLP SPRAY GUN

    Science.gov (United States)

    This Enviornmental Technology Verification reports on the characteristics of a paint spray gun. The research showed that the spray gun provided absolute and relative increases in transfer efficiency over the base line and provided a reduction in the use of paint.

  1. TECHNOLOGICAL PECULIARITIES OF THERMAL BARRIER COATINGS BASED ON ZIRCONIUM DIOXIDE

    Directory of Open Access Journals (Sweden)

    V. V. Okovity

    2016-01-01

    Full Text Available A technology for formation of thermal barrier coatings (TBC based on zirconium dioxide has been developed in the paper. The paper investigates structures of phase composition and thermal stability of such developed coatings. Investigation results pertaining to formation of an oxide system ZrO2 – Y2O3, while using plasma spraying and subsequent high-energy processing, which allows to increase resistance of a thermal barrier coating to thermal cycling heat resistance of the coating at temperature of 1100 °C. This leads to longer protection of bottom layer against high-temperature exposure. The methodology is based on complex metallographic, X-ray diffraction and electron microscopy investigations of structural elements in composite plasma coatings of the ZrO2 – Y2O system. Resistance of plasma coatings (Мe – Cr – Al – Y/ZrO2 – Y2O3-type, used as TBC to protect gas turbine engine blades under conditions of frequent thermal cyclings is limited by cleavage of an outer ceramic layer. Structural and electron microprobe investigations have shown that as a result of thermal cycling an outer atmosphere due to porous structure of the ceramic coating layer, migrates to the surface of lower metal coating, causing its oxidation. As a result, the metal-ceramic Al2O3 layer is formed at a metal-ceramic interface and it changes a stress state of the coating that causes a reduction of protective properties. Thus, a high heat resistance of thermal barrier coatings depends on processes occurring at the interface between metal and ceramic coating layers. A laser impact on samples with TBC leads to changes in the structure of the oxide layer of ZrO2 – Y2O3. In this case its initial surface characterized by considerable relief is significantly flattened due to processing and the coating is fractured and it is separated in fragments. As the oxide coating has low thermal conductivity, and the time of laser exposure is about 10–3 sec, a heat flux

  2. INDEPENDENT VERIFICATION SURVEY REPORT FOR ZONE 1 OF THE EAST TENNESSEE TECHNOLOGY PARK IN OAK RIDGE, TENNESSEE

    Energy Technology Data Exchange (ETDEWEB)

    King, David A.

    2012-08-16

    Oak Ridge Associated Universities (ORAU) conducted in-process inspections and independent verification (IV) surveys in support of DOE's remedial efforts in Zone 1 of East Tennessee Technology Park (ETTP) in Oak Ridge, Tennessee. Inspections concluded that the remediation contractor's soil removal and survey objectives were satisfied and the dynamic verification strategy (DVS) was implemented as designed. Independent verification (IV) activities included gamma walkover surveys and soil sample collection/analysis over multiple exposure units (EUs).

  3. Microencapsulation Technology for Corrosion Mitigation by Smart Coatings

    Science.gov (United States)

    Buhrow, Jerry; Li, Wenyan; Jolley, Scott; Calle, Luz M.

    2011-01-01

    A multifunctional, smart coating for the autonomous control of corrosion is being developed based on micro-encapsulation technology. Corrosion indicators as well as corrosion inhibitors have been incorporated into microcapsules, blended into several paint systems, and tested for corrosion detection and protection effectiveness. This paper summarizes the development, optimization, and testing of microcapsules specifically designed to be incorporated into a smart coating that will deliver corrosion inhibitors to mitigate corrosion autonomously. Key words: smart coating, corrosion inhibition, microencapsulation, microcapsule, pH sensitive microcapsule, corrosion inhibitor, corrosion protection pain

  4. Study on Technology and Properties of Brush Plating Coatings

    Institute of Scientific and Technical Information of China (English)

    DI Ping

    2004-01-01

    A new brush plating process with a soluble anode of nickel was introduced. TDY112 brush plating solution was used on the No.20 carbon steel substrate. It has the higher deposit velocity, better properties and lower cost. Scanning electronic microscopy(SEM), optical microscope, microhardness test and wear test were adopted to detect the surface quality and the properties of the coating, such as micrograph, microstructure, micro-hardness wear resistance and adherence between the coating and the substrate. The experimental results showed that the suitable technological parameters to be used, the coatings had better the surface quality, higher hardness and wear resistance.

  5. GUIDE TO CLEANER TECHNOLOGIES: ORGANIC COATING REMOVAL

    Science.gov (United States)

    A cleaner technology is a source reduction or recycle method |applied to eliminate or significantly reduce hazardous waste generation. Source reduction includes product changes and source control. Source control can be further characterized as input material changes, technology...

  6. Environmentally Friendly Coating Technology for Autonomous Corrosion Control

    Science.gov (United States)

    Calle, Luz M.; Li, Wenyan; Buhrow, Jerry W.; Johnsey, Marissa N.; Jolley, Scott T.; Pearman, Benjamin P.; Zhang, Xuejun; Fitzpatrick, Lilliana; Gillis, Mathew; Blanton, Michael; Hanna, Joshua S.; Rawlins, James W.

    2016-01-01

    This work concerns the development of environmentally friendly encapsulation technology, specifically designed to incorporate corrosion indicators, inhibitors, and self-healing agents into a coating, in such a way that the delivery of the indicators and inhibitors is triggered by the corrosion process, and the delivery of self-healing agents is triggered by mechanical damage to the coating. Encapsulation of the active corrosion control ingredients allows the incorporation of desired autonomous corrosion control functions such as: early corrosion detection, hidden corrosion detection, corrosion inhibition, and self-healing of mechanical damage into a coating. The technology offers the versatility needed to include one or several corrosion control functions into the same coating.The development of the encapsulation technology has progressed from the initial proof-of-concept work, in which a corrosion indicator was encapsulated into an oil-core (hydrophobic) microcapsule and shown to be delivered autonomously, under simulated corrosion conditions, to a sophisticated portfolio of micro carriers (organic, inorganic, and hybrid) that can be used to deliver a wide range of active corrosion ingredients at a rate that can be adjusted to offer immediate as well as long-term corrosion control. The micro carriers have been incorporated into different coating formulas to test and optimize the autonomous corrosion detection, inhibition, and self-healing functions of the coatings. This paper provides an overview of progress made to date and highlights recent technical developments, such as improved corrosion detection sensitivity, inhibitor test results in various types of coatings, and highly effective self-healing coatings based on green chemistry.

  7. Environmental Technology Verification Coatings and Coating Equipment Program (ETV CCEP). High Transfer Efficiency Spray Equipment - Generic Verification Protocol (Revision 0)

    Science.gov (United States)

    2006-09-30

    private sector . A long-range goal of this initiative is to become a vital resource to the industry and, thus, self-sustaining through private support...High-Pressure Waterjet • CO2 Pellet/Turbine Wheel • Ultrahigh-Pressure Waterjet 5 Process Water Reuse/Recycle • Cross-Flow Microfiltration ...Diffusion Dialysis • Electrowinning • Ion Exchange • Membrane Electrolysis • Reverse Osmosis • Vacuum Evaporation 2 • Laser Figure 2. Demonstration

  8. New PVD Technologies for New Ordnance Coatings

    Science.gov (United States)

    2012-04-01

    bcc Ta coatings on A723 steel. The sample was subjected to pulse laser heating ( PLH ) test at 2.5 msec, 1.0 J/mm2, 20 cycles, simulating ~1400ºC...electroplated HC Cr deposited on A723 steel under the same PLH conditions. While HC Cr is full of cracks causing erosion of the substrate steel, the MPP Ta...untempered martensite resulting from temperatures into austenite region. 20 Fig. 6g Pulsed Laser Heating ( PLH ) adhesion test of MPP deposited Ta

  9. Application verification research of cloud computing technology in the field of real time aerospace experiment

    Science.gov (United States)

    Wan, Junwei; Chen, Hongyan; Zhao, Jing

    2017-08-01

    According to the requirements of real-time, reliability and safety for aerospace experiment, the single center cloud computing technology application verification platform is constructed. At the IAAS level, the feasibility of the cloud computing technology be applied to the field of aerospace experiment is tested and verified. Based on the analysis of the test results, a preliminary conclusion is obtained: Cloud computing platform can be applied to the aerospace experiment computing intensive business. For I/O intensive business, it is recommended to use the traditional physical machine.

  10. Pipeline coating inspection in Mexico applying surface electromagnetic technology

    Energy Technology Data Exchange (ETDEWEB)

    Delgado, O.; Mousatov, A.; Nakamura, E.; Villarreal, J.M. [Instituto Mexicano del Petroleo (IMP), Mexico City (Mexico); Shevnin, V. [Moscow State University (Russian Federation); Cano, B. [Petroleos Mexicanos (PEMEX), Mexico City (Mexico)

    2009-07-01

    The main problems in the pipeline systems in Mexico include: extremely aggressive soil characterized by a high clay content and low resistivity, interconnection between several pipes, including electrical contacts of active pipelines with out of service pipes, and short distances between pipes in comparison with their depths which reduce the resolution of coating inspection. The results presented in this work show the efficiency of the Surface Electromagnetic Pipeline Inspection (SEMPI) technology to determine the technical condition of pipelines in situations before mentioned. The SEMPI technology includes two stages: regional and detailed measurements. The regional stage consists of magnetic field measurements along the pipeline using large distances (10 - 100 m) between observation points to delimit zones with damaged coating. For quantitative assessing the leakage and coating resistances along pipeline, additional measurements of voltage and soil resistivity measurements are performed. The second stage includes detailed measurements of the electric field on the pipe intervals with anomalous technical conditions identified in the regional stage. Based on the distribution of the coating electric resistance and the subsoil resistivity values, the delimitation of the zones with different grade of coating quality and soil aggressiveness are performed. (author)

  11. Experimental Verification of Statistically Optimized Parameters for Low-Pressure Cold Spray Coating of Titanium

    Directory of Open Access Journals (Sweden)

    Damilola Isaac Adebiyi

    2016-06-01

    Full Text Available The cold spray coating process involves many process parameters which make the process very complex, and highly dependent and sensitive to small changes in these parameters. This results in a small operational window of the parameters. Consequently, mathematical optimization of the process parameters is key, not only to achieving deposition but also improving the coating quality. This study focuses on the mathematical identification and experimental justification of the optimum process parameters for cold spray coating of titanium alloy with silicon carbide (SiC. The continuity, momentum and the energy equations governing the flow through the low-pressure cold spray nozzle were solved by introducing a constitutive equation to close the system. This was used to calculate the critical velocity for the deposition of SiC. In order to determine the input temperature that yields the calculated velocity, the distribution of velocity, temperature, and pressure in the cold spray nozzle were analyzed, and the exit values were predicted using the meshing tool of Solidworks. Coatings fabricated using the optimized parameters and some non-optimized parameters are compared. The coating of the CFD-optimized parameters yielded lower porosity and higher hardness.

  12. Verification of thickness and surface roughness of a thin film transparent coating

    DEFF Research Database (Denmark)

    Mohaghegh, Kamran; Hansen, Hans Nørgaard; Pranov, H.

    2013-01-01

    Thin film coatings are extremely interesting for industries, where there is a need to protect a highly accurate surface which has tight dimensional tolerances. The topic is important both in the production of new metallic tools and repair applications. In both applications it is vital to have...

  13. Advanced manufacturing technologies for the BeCOAT telescope

    Science.gov (United States)

    Sweeney, Michael N.; Rajic, Slobodan; Seals, Roland D.

    1994-02-01

    The beryllium cryogenic off-axis telescope (BeCOAT) uses a two-mirror, non re-imaging, off- axis, Ritchey Chretian design with all-beryllium optics, structures and baffles. The purpose of this telescope is the system level demonstration of advanced manufacturing technologies for optics, optical benches, and baffle assemblies. The key issues that are addressed are single point diamond turning of beryllium optics, survivable fastening techniques, minimum beryllium utilization, and technologies leading to self-aligning, all-beryllium optical systems.

  14. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: RESIDENTIAL ELECTRIC POWER GENERATION USING THE PLUG POWER SU1 FUEL CELL SYSTEM

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the Plug Power SU1 Fuel Cell System manufactured by Plug Power. The SU1 is a proton exchange membrane fuel cell that requires hydrogen (H2) as fuel. H2 is generally not available, so the ...

  15. ENVIRONMENTAL TECHNOLOGY VERIFICATION, TEST REPORT OF CONTROL OF BIOAEROSOLS IN HVAC SYSTEMS, COLUMBUS INDUSTRIES SL-3 RING PANEL

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the High Efficiency Mini Pleat air filter for dust and bioaerosol filtration manufactured by Columbus Industries. The pressure drop across the filter was 142 Pa clean and 283 Pa dust load...

  16. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT-INGERSOLL-RAND ENERGY SYSTEMS IR POWERWORKS(TM) 70 KW MICROTURBINE SYSTEM

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the IR PowerWorks 70kW Microturbine System manufactured by Ingersoll-Rand Energy Systems. This system is a 70 kW electrical generator that puts out 480 v AC at 60 Hz and that is driven by...

  17. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, SWINE WASTE ELECTRIC POWER AND HEAT PRODUCTION--MARTIN MACHINERY INTERNAL COMBUSTION ENGINE

    Science.gov (United States)

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, a combined heat and power system designed by Martin Machinery was evaluated. This paper provides test result...

  18. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, SWINE WASTE ELECTRIC POWER AND HEAT PRODUCTION--CAPSTONE 30KW MICROTURBINE SYSTEM

    Science.gov (United States)

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, a combined heat and power system was evaluated based on the Capstone 30kW Microturbine developed by Cain Ind...

  19. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, SWINE WASTE ELECTRIC POWER AND HEAT PRODUCTION--MARTIN MACHINERY INTERNAL COMBUSTION ENGINE

    Science.gov (United States)

    Under EPA’s Environmental Technology Verification program, which provides objective and scientific third party analysis of new technology that can benefit the environment, a combined heat and power system designed by Martin Machinery was evaluated. This paper provides test result...

  20. 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...

  1. 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...

  2. Amorphous boron coatings produced with vacuum arc deposition technology

    CERN Document Server

    Klepper, C C; Yadlowsky, E J; Carlson, E P; Keitz, M D; Williams, J M; Zuhr, R A; Poker, D B

    2002-01-01

    In principle, boron (B) as a material has many excellent surface properties, including corrosion resistance, very high hardness, refractory properties, and a strong tendency to bond with most substrates. The potential technological benefits of the material have not been realized, because it is difficult to deposit it as coatings. B is difficult to evaporate, does not sputter well, and cannot be thermally sprayed. In this article, first successful deposition results from a robust system, based on the vacuum (cathodic) arc technology, are reported. Adherent coatings have been produced on 1100 Al, CP-Ti, Ti-6Al-4V, 316 SS, hard chrome plate, and 52 100 steel. Composition and thickness analyses have been performed by Rutherford backscattering spectroscopy. Hardness (H) and modules (E) have been evaluated by nanoindentation. The coatings are very pure and have properties characteristic of B suboxides. A microhardness of up to 27 GPa has been measured on a 400-nm-thick film deposited on 52 100 steel, with a corresp...

  3. Coronary Stent Materials and Coatings: A Technology and Performance Update.

    Science.gov (United States)

    O'Brien, Barry; Zafar, Haroon; Ibrahim, Ahmad; Zafar, Junaid; Sharif, Faisal

    2016-02-01

    This paper reviews the current state of the art for coronary stent materials and surface coatings, with an emphasis on new technologies that followed on from first-generation bare metal and drug-eluting stents. These developments have been driven mainly by the need to improve long term outcomes, including late stent thrombosis. Biodegradable drug-eluting coatings aim to address the long term effects of residual durable polymer after drug elution; the SYNERGY, BioMatrix, and Nobori stents are all promising devices in this category, with minimal polymer through the use of abluminal coatings. Textured stent surfaces have been used to attached drug directly, without polymer; the Yukon Choice and BioFreedom stents have some promising data in this category, while a hydroxyapatite textured surface has had less success. The use of drug-filled reservoirs looked promising initially but the NEVO device has experienced both technical and commercial set-backs. However this approach may eventually make it to market if trials with the Drug-Filled Stent prove to be successful. Non-pharmacological coatings such as silicon carbide, carbon, and titanium-nitride-oxide are also proving to have potential to provide better performance than BMS, without some of the longer term issues associated with DES. In terms of biological coatings, the Genous stent which promotes attachment of endothelial progenitor cells has made good progress while gene-eluting stents still have some practical challenges to overcome. Perhaps the most advancement has been in the field of biodegradable stents. The BVS PLLA device is now seeing increasing clinical use in many complex indications while magnesium stents continue to make steady advancements.

  4. Technology of Strengthening Steel Details by Surfacing Composite Coatings

    Science.gov (United States)

    Burov, V. G.; Bataev, A. A.; Rakhimyanov, Kh M.; Mul, D. O.

    2016-04-01

    The article considers the problem of forming wear resistant meal ceramic coatings on steel surfaces using the results of our own investigations and the analysis of achievements made in the country and abroad. Increasing the wear resistance of surface layers of steel details is achieved by surfacing composite coatings with carbides or borides of metals as disperse particles in the strengthening phase. The use of surfacing on wearing machine details and mechanisms has a history of more than 100 years. But still engineering investigations in this field are being conducted up to now. The use of heating sources which provide a high density of power allows ensuring temperature and time conditions of surfacing under which composites with peculiar service and functional properties are formed. High concentration of energy in the zone of melt, which is created from powder mixtures and the hardened surface layer, allows producing the transition zone between the main material and surfaced coating. Surfacing by the electron beam directed from vacuum to the atmosphere is of considerable technological advantages. They give the possibility of strengthening surface layers of large-sized details by surfacing powder mixtures without their preliminary compacting. A modified layer of the main metal with ceramic particles distributed in it is created as a result of heating surfaced powders and the detail surface layer by the electron beam. Technology of surfacing allows using powders of refractory metals and graphite in the composition of powder mixtures. They interact with one another and form the particles of the hardening phase of the composition coating. The chemical composition of the main and surfaced materials is considered to be the main factor which determines the character of metallurgical processes in local zones of melt as well as the structure and properties of surfaced composition.

  5. Study of Different Technologies for Film Coating of Drug Layered Pellets Using Ethylcellulose as Functional Polymer

    OpenAIRE

    Melegari, Cecilia

    2016-01-01

    The research project focused on the study of different technologies for film coating of pellets using ethylcellulose as barrier-membrane coating polymer. In particular, two different approaches were investigated: the conventional aqueous film coating and the dry powder coating methods. The research carried out during the first part of the PhD provided a comprehensive study of the conventional aqueous film coating process of guaifenesin-loaded pellets in order to understand the variables af...

  6. IBAD-MgO technology for coated conductors

    Energy Technology Data Exchange (ETDEWEB)

    Jo, William [Dept. of Physics, Ewha Womans University, Seoul (Korea, Republic of)

    2016-09-15

    Ion-beam assisted deposition (IBAD) technology has been successfully applied to high-temperature superconductor coated conductors (CC) as textured substrates. Since the coated conductors were proposed as a potential framework for utilizing the superior transport characteristics of YBa2Cu3O7 and related cuprate oxides, several methods including rolling-assisted bi-axial textured substrates (RABiTS) and inclined substrate deposition (ISD), as well as IBAD, have been attempted. As of 2016, most companies that are trying to commercialize CC adapt IBAD technology except for American Superconductors who use RABiTS predominantly. For the materials in the IBAD process, initial efforts to use yttria-stabilized zirconia (YSZ) or related fluorites in Fujikura in Japan have quickly given way to MgO which technique was developed by Stanford University in the USA. In this review, we present a historical overview of IBAD technology, in particular, for the application of CC. We describe the key scientific understanding of nucleation, the texturing mechanism, and the growth of large bi-axial grains and discuss some potential new IBAD materials and systems for large-scale production.

  7. Sandia technology. Volume 13, number 2 Special issue : verification of arms control treaties.

    Energy Technology Data Exchange (ETDEWEB)

    1989-03-01

    Nuclear deterrence, a cornerstone of US national security policy, has helped prevent global conflict for over 40 years. The DOE and DoD share responsibility for this vital part of national security. The US will continue to rely on nuclear deterrence for the foreseeable future. In the late 1950s, Sandia developed satellite-borne nuclear burst detection systems to support the treaty banning atmospheric nuclear tests. This activity has continued to expand and diversify. When the Non-Proliferation Treaty was ratified in 1970, we began to develop technologies to protect nuclear materials from falling into unauthorized hands. This program grew and now includes systems for monitoring the movement and storage of nuclear materials, detecting tampering, and transmiting sensitive data securely. In the late 1970s, negotiations to further limit underground nuclear testing were being actively pursued. In less than 18 months, we fielded the National Seismic Station, an unattended observatory for in-country monitoring of nuclear tests. In the mid-l980s, arms-control interest shifted to facility monitoring and on-site inspection. Our Technical On-site Inspection Facility is the national test bed for perimeter and portal monitoring technology and the prototype for the inspection portal that was recently installed in the USSR under the Intermediate-Range Nuclear Forces accord. The articles in the special issue of Sundiu Technology describe some of our current contributions to verification technology. This work supports the US policy to seek realistic arms control agreements while maintaining our national security.

  8. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: BAGHOUSE FILTRATION PRODUCTS, BWF AMERICA, INC., GRADE 700 MPS POLYESTER FELT FILTER SAMPLE

    Science.gov (United States)

    EPA's National Risk Management Research Laboratory, through its Environmental Technology Verification Program, evaluated the performance of a bag house filtration product for use controlling PM2.5. The product was BWF America, Inc., filter fabric Grade 700 Polyester Felt. All tes...

  9. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: BAGHOUSE FILTRATION PRODUCTS, BWF AMERICA, INC., GRADE 700 MPS POLYESTER FELT FILTER SAMPLE

    Science.gov (United States)

    EPA's National Risk Management Research Laboratory, through its Environmental Technology Verification Program, evaluated the performance of a bag house filtration product for use controlling PM2.5. The product was BWF America, Inc., filter fabric Grade 700 Polyester Felt. All tes...

  10. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: BAGHOUSE FILTRATION PRODUCTS, W.L. GORE & ASSOCIATES, INC. LYSB3 FILTER SAMPLE

    Science.gov (United States)

    Baghouse filtration products (BFPs) were evaluated by the Air Pollution Control Technology (APCT) Verification Center. The performance factor verified was the mean outlet particle concentration for the filter fabric as a function of the size for particles equal to or smaller than...

  11. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, BAGHOUSE FILTRATION PRODUCTS, W.L. GORE & ASSOCIATES, INC., L4427 FILTER SAMPLE

    Science.gov (United States)

    Baghouse filtration products (BFPs) were evaluated by the Air Pollution Control Technology (APCT) Verification Center. The performance factor verified was the mean outlet particle concentration for the filter fabric as a function of the size of those particles equal to and smalle...

  12. THE ETV P2 INNOVATIVE COATINGS AND COATING EQUIPMENT PROGRAM--AN UPDATE

    Science.gov (United States)

    The paper focuses on the Pollution Prevention (P2), Recycling, and Waste Treatment Systems Center of the EPA's Environmental Technology Verification (ETV) Program and, specifically, the P2 Innovating Coatings and Coating Equipment Program (CCEP) housed within the Center. The focu...

  13. Architecture and critical technologies of seismic information system in CTBT verification

    Institute of Scientific and Technical Information of China (English)

    ZHENG Xue-feng; SHEN Jun-yi; JIN Ping; ZHENG Jiang-ling; SUN Peng; ZHANG Hui-min; WANG Tong-dong

    2006-01-01

    Seismic monitoring is one of the most important approaches for ground-based nuclear explosion monitoring. In order to improve the monitoring capability for low magnitude seismic events, a seismic information system was developed by using the technologies of geographic information system and database. This paper describes the designing and critical technologies of the Seismic Information System in CTBT Verification developed based on ArcGIS and ORACLE platforms. It is a combination of the database storage framework, application programming interface and graphic application software for users to meet their monitoring objectives. Combining the ArcSDE Geodatabase, RDBMS ORACLE and ArcObjects developing technique on COM, not only the multi-sources data has been seamlessly integrated, but also the most functions of ORACLE, for example, consistency, concurrent access, security mechanism, etc, have been reserved. For easy access to the information system we develop two different mechanisms. The first is a menu-driven internal system that is run on NT platforms. The second access mechanism is based on LAN and easily accessible by any web browsers.

  14. Novel chip coating approaches to improve white LED technology

    Science.gov (United States)

    Hartmann, Paul; Schweighart, Marko; Sommer, Christian; Wenzl, Franz-P.; Zinterl, Ernst; Hoschopf, Hans; Pachler, Peter; Tasch, Stefan

    2008-02-01

    Key market requirements for white LEDs, especially in the general lighting and automotive headlamp segments call for improved concepts and performance of white LEDs based on phosphor conversion. Major challenges are small emission areas, highest possible intensities, long-term color stability, and spatial homogeneity of color coordinates. On the other hand, the increasingly high radiation power of the blue LEDs poses problems for all involved materials. Various thick film coating technologies are widely used for applying the color conversion layer to the semiconductor chip. We present novel concepts based on Silicate phosphors with high performance in terms of spatial homogeneity of the emission and variability of the color temperature. Numerical calculation of the optical properties with the help of state-of-the-art simulation tools was used as a basis for the practical optimization of the layer geometries.

  15. Press Hardening Steel (PHS): a new coating and process technology

    Energy Technology Data Exchange (ETDEWEB)

    Faderl, J. [voestalpine Stahl Linz GmbH (Austria); Vehof, R. [Polynorm N.V., Bundschoten (Netherlands)

    2005-07-01

    Press hardening technology has been known for many years. Increased requirements with respect to safety and light weight construction of the steel body for cars and trucks force the automotive industry to use high strength steels more and more. Strength levels up to 1000 MPa can be provided with AHSS grades. Above 1000 MPa, these steel grades are coming to their limit with respect to strength vs. formability balance. PHS is a very attractive alternative concept. Hardenable 22MnB5 has been supplied - uncoated - for a long time. To avoid decarburization during heat treatment and to improve corrosion behaviour hot dip aluminized 22MnB5 was introduced to the market. Both materials, uncoated and hot dip aluminized, do not provide cathodic corrosion protection without postcoating (sheradizing..). In the last two years an improved press hardening technology and a zinc based coating providing cathodic protection was developed by voestalpine. Some results about strength homogeneity, formability, corrosion behaviour of this voestalpine-PHS technology will be presented in the paper. (orig.)

  16. A supercritical fluid-based coating technology. 3: preparation and characterization of bovine serum albumin particles coated with lipids.

    Science.gov (United States)

    Ribeiro Dos Santos, I; Richard, J; Thies, C; Pech, B; Benoit, J-P

    2003-01-01

    Solvent-free microparticles, loaded with bovine serum albumin as a model protein, were produced using a novel supercritical (SC) fluid-based coating technology. Coating material consists either of trimyristin (Dynasan 114) or of Gelucire 50-02. Microparticles obtained were characterized as regards their morphology, protein content and in vitro release profile. A discontinuous coating made of micro-needles of trimyristin led to an initial burst release of approximately 70% in 30 min. However, a prolonged release of the BSA could be achieved in a phosphate buffer solution at 37 degrees C over a 24 h period from particles coated with Gelucire 50-02. Furthermore, it was shown that BSA does not undergo any degradation after SC CO(2) treatment under the conditions used in the coating process.

  17. Students' Use of Technological Tools for Verification Purposes in Geometry Problem Solving

    Science.gov (United States)

    Papadopoulos, Ioannis; Dagdilelis, Vassilios

    2008-01-01

    Despite its importance in mathematical problem solving, verification receives rather little attention by the students in classrooms, especially at the primary school level. Under the hypotheses that (a) non-standard tasks create a feeling of uncertainty that stimulates the students to proceed to verification processes and (b) computational…

  18. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT; ULTRASONIC AQUEOUS CLEANING SYSTEMS, SMART SONIC CORPORATION, SMART SONIC

    Science.gov (United States)

    This report is a product of the U.S. EPA's Environmental Technoloy Verification (ETV) Program and is focused on the Smart Sonics Ultrasonic Aqueous Cleaning Systems. The verification is based on three main objectives. (1) The Smart Sonic Aqueous Cleaning Systems, Model 2000 and...

  19. ETV Program Report: Coatings for Wastewater Collection Systems - Protective Liner Systems, Inc., Epoxy Mastic, PLS-614

    Science.gov (United States)

    The Protective Liner Systems International, Inc. Epoxy Mastic PLS-614 coating used for wastewater collection system rehabilitation was evaluated by EPA’s Environmental Technology Verification Program under laboratory conditions at the Center for Innovative Grouting Material and T...

  20. Hot spray technology of TA7 titanium alloy coated by molybdenum and its bonding strength

    Institute of Scientific and Technical Information of China (English)

    Li Xiaoquan; Du Zeyu; Yang Xuguang

    2006-01-01

    A kind of surface modification test was introduced, by which plasma spray in argon atmosphere with CNC4500 system was applied for TA7 titanium alloy to be coated with molybdenum, and technology to produce metallurgical bonding at interface of coating and base meal was tested by heating in vacuum condition for diffusion after hot spray.With the help of scan electron microscope analysis ( SEM) , the effect of argon inlet pressure and heating temperature on coating structure as well as product of diffusion layer were studied.The glued tensile test method was used to measure bonding strength of base metal to coating.The result has shown that both argon inlet pressure and heating temperature exert some effect on coating structure and the width of diffusion layer.A bonding strength of base metal to coating which is greater than molybdenum coating itself may be attained and can be controlled in more than 50 MPa level with tested hot spray technology.

  1. Biased HiPIMS technology for superconducting rf accelerating cavities coating

    CERN Document Server

    G. Rosaz, G.; Sonato, D.; Calatroni, S.; Ehiasarian, A.; Junginger, T.; Taborelli, M.

    2016-01-01

    In the last few years the interest of the thin film science and technology community on High Impulse Power Magnetron Sputtering (HIPIMS) coatings has steadily increased. HIPIMS literature shows that better thin film morphology, denser and smoother films can be achieved when compared with standard dc Magnetron Sputtering (dcMS) coating technology. Furthermore the capability of HIPIMS to produce a high quantity of ionized species can allow conformal coatings also for complex geometries. CERN already studied the possibility to use such a coating method for SRF accelerating cavities. Results are promising but not better from a RF point of view than dcMS coatings. Thanks to these results the next step is to go towards a biased HiPIMS approach. However the geometry of the cavities leads to complex changes in the coating setup in order to apply a bias voltage. Coating system tweaking and first superconducting properties of biased samples are presented.

  2. Development of Out-pile Test Technology for Fuel Assembly Performance Verification

    Energy Technology Data Exchange (ETDEWEB)

    Chun, Tae Hyun; In, W. K.; Oh, D. S. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)] (and others)

    2007-03-15

    Out-pile tests with full scale fuel assembly are to verify the design and to evaluate the performance of the final products. HTL for the hydraulic tests and FAMeCT for mechanical/structural tests were constructed in this project. The maximum operating conditions of HTL are 30 bar, 320 .deg. C, and 500 m3/hr. This facility can perform the pressure drop test, fuel assembly uplift test, and flow induced vibration test. FAMeCT can perform the bending and vibration tests. The verification of the developed facilities were carried out by comparing the reference data of the fuel assembly which was obtained at the Westinghouse Co. The compared data showed a good coincidence within uncertainties. FRETONUS was developed for high temperature and high pressure fretting wear simulator and performance test. A performance test was conducted for 500 hours to check the integrity, endurance, data acquisition capability of the simulator. The technology of turbulent flow analysis and finite element analysis by computation was developed. From the establishments of out-pile test facilities for full scale fuel assembly, the domestic infrastructure for PWR fuel development has been greatly upgraded.

  3. Improvement on Performances of Internal Combustion Engine Using the Technology of Ceramic Coating

    Institute of Scientific and Technical Information of China (English)

    林建生; 付晓光; 张建昭

    2003-01-01

    This paper introduces a new technology of using ceramic coating on piston rings of an internal combustion engine, and the comparison of mechanical efficiency and performances of an actual engine before and after the application of ceramic coating on the piston rings. The experimental results show that the mechanical efficiency and power output are enhanced by 4% and 2.6%, respectively, with fuel consumption reduced by 2.9%. Further studies on coating processing and coating materials as well as the reliability and durability will be of great significance in the application and popularization of the new technology.

  4. BEval: A Plug-in to Extend Atelier B with Current Verification Technologies

    Directory of Open Access Journals (Sweden)

    Valério Medeiros Jr.

    2014-01-01

    Full Text Available This paper presents BEval, an extension of Atelier B to improve automation in the verification activities in the B method or Event-B. It combines a tool for managing and verifying software projects (Atelier B and a model checker/animator (ProB so that the verification conditions generated in the former are evaluated with the latter. In our experiments, the two main verification strategies (manual and automatic showed significant improvement as ProB's evaluator proves complementary to Atelier B built-in provers. We conducted experiments with the B model of a micro-controller instruction set; several verification conditions, that we were not able to discharge automatically or manually with AtelierB's provers, were automatically verified using BEval.

  5. A Study on Medium Temperature Chemical Vapor Deposition (MT-CVD) Technology and Super Coating Materials

    Institute of Scientific and Technical Information of China (English)

    GAO Jian; LI Jian-ping; ZENG Xiang-cai; MA Wen-cun

    2004-01-01

    In this paper, the dense and columnar crystalline TiCN coating layers with very good bonding strength between a layer and another layer was deposited using Medium Temperature Chemical Vapor Deposition (MT-CVD) where CH3CN organic composite with C/N atomic clusters etc. was utilized at 700 ~ 900 ℃. Effect of coating processing parameters, such as coating temperature, pressure and different gas flow quantity on structures and properties of TiCN coating layers were investigated. The super coating mechanis mand structures were analyzed. The new coating processing parameters and properties of carbide inserts with super coating layers were gained by using the improved high temperature chemical vapor deposition (HTCVD) equipment and HT-CVD, in combination with MT-CVD technology.

  6. Self-adaptive phosphor coating technology for wafer-level scale chip packaging

    Institute of Scientific and Technical Information of China (English)

    Zhou Linsong; Rao Haibo; Wang Wei; Wan Xianlong; Liao Junyuan; Wang Xuemei; Zhou Da

    2013-01-01

    A new self-adaptive phosphor coating technology has been successfully developed,which adopted a slurry method combined with a self-exposure process.A phosphor suspension in the water-soluble photoresist was applied and exposed to LED blue light itself and developed to form a conformal phosphor coating with selfadaptability to the angular distribution of intensity of blue light and better-performing spatial color uniformity.The self-adaptive phosphor coating technology had been successfully adopted in the wafer surface to realize a waferlevel scale phosphor conformal coating.The first-stage experiments show satisfying results and give an adequate demonstration of the flexibility of self-adaptive coating technology on application of WLSCP.

  7. The development of advanced instrumentation and control technology -The development of verification and validation technology for instrumentation and control in NPPs-

    Energy Technology Data Exchange (ETDEWEB)

    Kwon, Kee Choon; Ham, Chang Sik; Lee, Byung Sun; Kim, Jung Taek; Park, Won Man; Park, Jae Chang; Lee, Jang Soo; Um, Heung Sub; Kim, Jang Yul; Ryoo, Chan Hoh; Joo, Jae Yoon; Song, Soon Ja [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1995-07-01

    We collected and analyzed the domestic/international codes, standards and guidelines to develop high reliable software verification and validation methodology which is satisfied to our real situation. The three major parts of work are performed that is the construction of the frame for high reliable software development environment, establishment of high reliable software development methodology and study for the basic technology related to safety-critical software. These three parts are tightly coupled each other to achieve self-reliable software verification and validation technology for digital I and C in NPPs. The configuration of hardware and software are partly performed using requirements which is developed in first stage for the development of I and C test facility. In hardware part, expanded interface using VXI bus and driving software is completed. The main program for math, modelling and supervisor program for instructions are developed. 27 figs, 22 tabs, 69 refs. (Author).

  8. Ultrasonic Coating and Holographic Exposure Technology. Phase 1

    Science.gov (United States)

    2015-09-01

    bumps . The improvements were made possible with proper choice of spray coating variables. Figure 24 and Figure 25 show LC spin coated onto spray...in the same method as in a semiconductor wafer leveling process. Other considerations for this system will depend largely upon the desired pattern

  9. Application of the Molecular Adsorber Coating technology on the Ionospheric Connection Explorer program

    Science.gov (United States)

    Abraham, Nithin S.; Hasegawa, Mark M.; Secunda, Mark S.

    2016-09-01

    The Molecular Adsorber Coating (MAC) is a zeolite based highly porous coating technology that was developed by NASA Goddard Space Flight Center (GSFC) to capture outgassed contaminants, such as plastics, adhesives, lubricants, silicones, epoxies, potting compounds, and other similar materials. This paper describes the use of the MAC technology to address molecular contamination concerns on NASA's Ionospheric Connection Explorer (ICON) program led by the University of California (UC) Berkeley's Space Sciences Laboratory. The sprayable paint technology was applied onto plates that were installed within the instrument cavity of ICON's Far Ultraviolet Imaging Spectrograph (FUV). However, due to the instrument's particulate sensitivity, the coating surface was vibrationally cleaned through simulated acoustics to reduce the risk of particle fall-out contamination. This paper summarizes the coating application efforts on the FUV adsorber plates, the simulated laboratory acoustic level cleaning test methods, particulation characteristics, and future plans for the MAC technology.

  10. Recent RHIC in-situ coating technology developments

    CERN Document Server

    Hershcovitch, A.; Brennan, J.M.; Chawla, A.; Fischer, W.; Liaw, C-J; Meng, W.; Todd, R.; Custer, A.; Erickson, M.; Jamshidi, N.; Kobrin, P.; Laping, R.; Poole, H.J.; Jimenez, J.M.; Neupert, H.; Taborelli, M.; Yin-Vallgren, C.; Sochugov, N.

    2013-04-22

    To rectify the problems of electron clouds observed in RHIC and unacceptable ohmic heating for superconducting magnets that can limit future machine upgrades, we started developing a robotic plasma deposition technique for $in-situ$ coating of the RHIC 316LN stainless steel cold bore tubes based on staged magnetrons mounted on a mobile mole for deposition of Cu followed by amorphous carbon (a-C) coating. The Cu coating reduces wall resistivity, while a-C has low SEY that suppresses electron cloud formation. Recent RF resistivity computations indicate that 10 {\\mu}m of Cu coating thickness is needed. But, Cu coatings thicker than 2 {\\mu}m can have grain structures that might have lower SEY like gold black. A 15-cm Cu cathode magnetron was designed and fabricated, after which, 30 cm long samples of RHIC cold bore tubes were coated with various OFHC copper thicknesses; room temperature RF resistivity measured. Rectangular stainless steel and SS discs were Cu coated. SEY of rectangular samples were measured at ro...

  11. Pipeline coatings and joint protection: a brief history, conventional thinking and new technologies

    Energy Technology Data Exchange (ETDEWEB)

    Buchanan, Robert [Canusa-CPS, Toronto, ON (Canada)

    2003-07-01

    Pipelines have been in use since oil was discovered and the need to move it efficiently from the well head to secondary transportation, refinery or market was first realized. Early pipelines were obviously crude, but corrosion was understood as being a problem which resulted in the need for corrosion preventive coatings. As coatings technology developed, pipeline coatings became better and longer lasting but also needed to advance as pipeline operating conditions became more severe. High performance pipeline coatings, such as the 3-layer polyethylene (3LPE) and, more recently, multi-layer polypropylene (MLPP), have been developed to meet the more demanding applications in today's market. Coatings are generally applied under well controlled factory conditions but weld joint systems need to be applied by contractors under unpredictable field conditions and yet provide performance and quality consistent with plant applied coatings. Polyethylene heat-shrinkable sleeves are the most commonly used corrosion protection system for field joints on 3LPE coated pipelines today due to their compatibility, ease of application, reliability and extensive track record. However, there has been an absence of a more universally accepted field joint solution for MLPP coated pipelines. This paper ultimately describes the evolution and development of the latest generation of heat-shrinkable sleeves for 3LPE plus a breakthrough technology in MLPP field joint coatings that has been tested, specified and successfully used in the field on many global projects by leading engineers and contractors, including in Brazil. (author)

  12. Laser ablation and competitive technologies in paint stripping of heavy anticorrosion coatings

    Science.gov (United States)

    Schuöcker, Georg D.; Bielak, Robert

    2007-05-01

    During the last years surface preparation prior to coating operations became an important research and development task, since tightened environmental regulations have to be faced in view of the deliberation of hazardous compounds of coatings. Especially, ship-yards get more and more under pressure, because the environmental commitment of their Asian competitors is fairly limited. Therefore, in the US and in Europe several technology evaluation projects have been launched to face this challenge. The majority of coating service providers and ship yards use grit blasting; this process causes heavy emissions as of dust and enormous amounts of waste as polluted sand. Coating removal without any blasting material would reduce the environmental impact. Laser processing offers ecological advantages. Therefore thermal processes like laser ablation have been studied thoroughly in several published projects and also in this study. Many of these studies have been focused on the maintenance of airplanes, but not on de-coating of heavy protective coatings. In this case the required laser power is extra-high. This study is focused on the maintenance of heavy anti-corrosion coatings and compares the industrial requirements and the opportunities of the innovative laser processes. Based on the results of this analysis similar approaches as e.g. plasma jet coating ablation have been studied. It was concluded that none of these methods can compete economically with the conventional processes as grit blasting and water jetting since the required ablation rate is very high (>60m2/h). A new process is required that is not based on any blasting operation and which does not depend strongly on the coating's characteristic. The delamination of the coating where the coatings is not removed by evaporation, but in little pieces of the complete coating system meets these requirements. The delamination can be accomplished by the thermal destruction of the primer coating by an intense heat pulse

  13. The Fabrication of Microstructure Surface of Super- hydrophobic Coating by Surface Gelation Technology

    Institute of Scientific and Technical Information of China (English)

    DUAN Hui; WANG Houzhi; ZHAO Lei; ZHAO Huizhong

    2008-01-01

    The microstructured surface of materials were fabricated by a two-step acid-base catalyzed sol-gel process. In fluorinated polymer with PTFE doping, the well-proportioned composite sols were prepared using sol-gel processing under the hydrochloric acid and deficiency of water conditions. After the substrate was coated by composite sols, and the gelation treatment on the surface of composite coating, the micrometer-scale and nanometer-scale hierarchical structures were formed in surface layer of material. XPS and TEM technologies were employed to identify that the gelation occurs just on the surface of composite coating. The morphology of coating surface was observed by SEM and AFM technologies. The microstructured surface of material can be fabricated using this inexpensive and easily controlled method on low surface energy resin materials, the super-hydrophobic coatings materials can be prepared.

  14. Development of process technologies for improvement of electroless nickel coatings properties

    Science.gov (United States)

    Barba-Pingarrón, A.; Bolarín-Miró, A.; Sánchez – de Jesús, F.; Vargas-Mendoza, L.; Trujillo-Barragán, M.; Molera-Sola, P.; Hernandez-Gallegos, M. A.; Valdez-Navarro, R.

    2013-06-01

    This paper describes research and technology developments that enable to improve nickel electroless coating properties. This work deals with: (a) different methods in order to achieve Ni-P-Mo coatings. (b) Other development is related with coatings with addition of hard particles such as SiC, WC or Al2O3,(c) Electroless nickel deposits on PBT and austempered ductile iron (ADI). (d) In addition, nickel coatings were deposited on powder metallic pieces and finally, electroless nickel coatings, in conjunction with layers from thermal spray process were formed. Characterization of all coatings by means of optical microscopy, scanning electron microscopy, micro-hardness, wear and corrosion tests were carried out. Results indicate positive increment in both mechanical and electrochemical properties which enhance field applications in Mexican industry.

  15. A supercritical fluid-based coating technology. 2: solubility considerations.

    Science.gov (United States)

    Ribeiro Dos Santos, I; Thies, C; Richard, J; Le Meurlay, D; Gajan, V; VandeVelde, V; Benoit, J-P

    2003-01-01

    Solubility measurements of candidate coating materials have been performed in supercritical (SC) CO(2) so as to select appropriate coating materials for implementation of a solvent-free coating process previously described. Solubility of lipidic compounds such as waxes (paraffin, beeswax, Carnauba wax), pure triglycerides (tricaprin, trimyristin, tripalmitin, tristearin) and mixture of glycerides and fatty acid esters (Gelucire) in SC CO(2) were evaluated in a static mode under different temperature and pressure conditions, ranging from 13-52 degrees C and from 50-220 bar, whether the CO(2)was in its liquid or SC state. It was shown that the compounds which are mixtures of various components give rise to a selective extraction of the lower melting point components, as evidenced from thermal analysis of soluble and insoluble fractions of the coating materials.

  16. Coatings Manufacturing Technology for China's Automobile Industry Conference

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    China's automobile industry is experiencing continued phenomenal growth with the first 11 months of 2003 seeing an output of over 4 million units.This has lead to a huge growth in the consumption of automotive coatings with a 30% growth expected in 2004,reaching 200,000 tons-compared to a 7% average growth for the coatings industry as a whole.Output is predieted to reach 300,000 tons by 2010!

  17. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: STORMWATER MANAGEMENT STORMFILTER® TREATMENT SYSTEM USING PERLITE MEDIA

    Science.gov (United States)

    Verification testing of the Stormwater Management, Inc. StormFilter® Using Perlite Filter Media was conducted on a 0.7 acre drainage basin near downtown Griffin, Georgia. The system consists of an inlet bay, flow spreader, cartridge bay, overflow baffle, and outlet bay, housed in...

  18. A Verification and Analysis of the USAF/DoD Fatigue Model and Fatigue Management Technology

    Science.gov (United States)

    2005-11-01

    We Nap: Evolution, Chronobiology, and Functions of Polyphasic and Ultrashort Sleep . Stampi, C. (ed) Birkhduser, Boston. Defense Acquisition...Windows® soffivare application of the Sleep , Activity, Fatigue, and Task Effectiveness (SAFTE) applied model. The application, the Fatigue Avoidance...Scheduling Tool (FASTTM) was re-engineered as a clone from the SAFTE specification. The verification considered nine sleep /wake schedules that were

  19. The FPGA Prototyping Verification of ASIC Based on TotalRecall Technology%基于TotalRecall技术ASIC的FPGA原型验证

    Institute of Scientific and Technical Information of China (English)

    郭安华; 黄世震

    2012-01-01

    Verification is a very important part in IG design. With the rapid development of FPGA, the FPGA prototype verification has been used widely in the ASIC. FPGA prototyping verification is an effective verification way of ASIC, but the visibility of traditional FPGA prototyping verification is poor. In order to solve the visibility problem of traditional FPGA prototyping verification, verification engineer uses a combination of TotalRecall technology FPGA prototyping verification method to verify a mouse chip. The result shows this method provides complete visibility and ensures FPGA prototyping verification at the real speed. This method has innovated ASIC verification methodology.%芯片设计中一个非常重要的环节是验证.随着FPGA技术的迅速发展使基于FPGA的原型验证被广泛的用于ASIC的开发过程,FPGA原型验证是ASIC有效的验证途径,但传统FPGA原型验证的可视性非常差.为了解决传统FPGA原型验证可视性的问题,验证工程师采用了结合TotalRecall技术的FPGA原型验证方法对一款鼠标芯片进行验证.获得该方法不仅能提供100%的可视性,还确保FPGA原型验证以实时硬件速度运行.该方法创新了ASIC的验证方法学.

  20. Improvement on the Fatigue Performance of 2024-T4 Alloy by Synergistic Coating Technology

    Directory of Open Access Journals (Sweden)

    Xi-Shu Wang

    2014-05-01

    Full Text Available In this paper, rotating bending fatigue tests of 2024-T4 Al alloy with different oxide coatings were carried out. Compared to the uncoated and previously reported oxide coatings of aluminum alloys, the fatigue strength is able to be enhanced by using a novel oxide coating with sealing pore technology. These results indicate that the better the coating surface quality is, the more excellent the fatigue performance under rotating bending fatigue loading is. The improvement on the fatigue performance is mainly because the fatigue crack initiation and the early stage of fatigue crack growth at the coating layer can be delayed after PEO coating with pore sealing. Therefore, it is a so-called synergistic coating technology for various uses, including welding thermal cracks and filling micro-pores. The effects of different oxide coatings on surface hardness, compressive residual stress, morphology and fatigue fracture morphology are discussed. A critical compressive residual stress of about 95–100 MPa is proposed.

  1. ENVIRONMENTAL TECHNOLOGY VERIFICATION: TEST REPORT OF CONTROL OF BIOAEROSOLS IN HLVAC SYSTEMS: AEOLUS CORPORATION SYNTHETIC MINIPLEAT V-CELL, SMV-M13-2424

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the Synthetic Minipleat V-Cell, SMV-M13-2424 air filter for dust and bioaerosol filtration manufactured by Aeolus Corporation. The pressure drop across the filter was 77 Pa clean and 348 ...

  2. ENVIRONMENTAL TECHNOLOGY VERIFICATION, TEST REPORT OF CONTROL OF BIOAEROSOLS IN HVAC SYSTEMS: TRI-DIM FILTER CORP. PREDATOR II MODEL 8VADTP123C23

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the Predator II, Model 8VADTP123C23CC000 air filter for dust and bioaerosol filtration manufactured by Tri-Dim Filter Corporation. The pressure drop across the filter was 138 Pa clean and...

  3. ENVIRONMENTAL TECHNOLOGY VERIFICATION, TEST REPORT OF CONTROL OF BIOAEROSOLS IN HVAC SYSTEMS, FILTRATION GROUP, AEROSTAR FP-98 MINIPLEAT V-BLANK FILTER

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the AeroStar FP-98 Minipleat V-Bank Filter air filter for dust and bioaerosol filtration manufactured by Filtration Group. The pressure drop across the filter was 137 Pa clean and 348 Pa ...

  4. ENVIRONMENTAL TECHNOLOGY VERIFICATION: TEST REPORT OF CONTROL OF BIOAEROSOLS IN HVAC SYSTEMS: AEOLUS CORPORATION SYNTHETIC MINIPLEAT V-CELL, SMV-M14-2424

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the Synthetic Minipleat V-Cell, SMV-M14-2424 air filter for dust and bioaerosol filtration manufactured by Aeolus Corporation. The pressure drop across the filter was 104 Pa clean and 348...

  5. ENVIRONMENTAL TECHNOLOGY VERIFICATION, TEST REPORT OF CONTROL OF BIOAEROSOLS IN HVAC SYSTEMS:AAF INTERNATIONAL, PERFECTPLEAT ULTRA, 175-102-863

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the PerfectPleat Ultra 175-102-863 air filter for dust and bioaerosol filtration manufactured by AAF International. The pressure drop across the filter was 112 Pa clean and 229 Pa dust lo...

  6. ENVIRONMENTAL TECHNOLOGY VERIFICATION, TEST REPORT OF CONTROL OF BIOAEROSOLS IN HVAC SYSTEMS, FILTRATION GROUP, AEROSTAR "C-SERIES" POLYESTER PANEL FILTER

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the AeroStar "C-Series" Polyester Panel Filter air filter for dust and bioaerosol filtration manufactured by Filtration Group. The pressure drop across the filter was 126 Pa clean and 267...

  7. Nickel Based Coatings Containing TiN Nanoparticles Prepared by Ultrasonic-Electrodeposition Technology

    Directory of Open Access Journals (Sweden)

    Yong Wang

    2013-07-01

    Full Text Available In order to enhance the surface properties of steel substrates, nano Ni-TiN composite coatings were prepared using ultrasonic-electrodeposition technology in this study. The effects of ultrasonic on composite coatings were studied. The X-Ray Diffraction (XRD study had been utilized to detect the crystalline and amorphous characteristics of Ni-TiN composite coatings. The surface morphology and metallurgical structure of composite coatings were observed with Scanning Electron Microscope (SEM and High Respective Transmission Electron Microscope (HRTEM. Finally the corrosion resistance was tested. The results show that the ultrasonic has greatly effects on TiN nanoparticles in composite coatings. And the introduction of ultrasonic and TiN particles cause the nickel grains to become fine. The average grain diameter of TiN particles is 30 nm. The Ni grain is measured approximately 60 nm. The test of corrosion resistance shows the nano Ni-TiN composite coating is proved with good corrosion resistance. The corrosion rate of 45 steel is about 5 times than that of Ni-TiN composite coating and the corrosion rate of Ni coating is above thrice than that of Ni-TiN composite coating.

  8. Handbook of polymer coatings for electronics chemistry, technology and applications

    CERN Document Server

    Licari, James J

    1990-01-01

    This completely revised edition remains the only comprehensive treatise on polymer coatings for electronics. Since the original edition, the applications of coatings for the environmental protection of electronic systems have greatly increased, largely driven by the competitive need to reduce costs, weight and volume. The demands for high-speed circuits for the rapid processing of signals and data, high-density circuits for the storage and retrieval of megabits of memory, and the improved reliability required of electronics for guiding and controlling weapons and space vehicles have triggered

  9. PROCEEDINGS: LOW- AND NO-VOC COATING TECHNOLOGIES - 2ND BIENNIAL INTERNATIONAL CONFERENCE

    Science.gov (United States)

    The report documents an international conference that provided a forum for the exchange of technical information on coating technologies. It focused on improved and emerging technologies that result in fewer volatile organic compound (VOC) and toxic air emissions that those from ...

  10. Generic Protocol for the Verification of Ballast Water Treatment Technology. Version 5.1

    Science.gov (United States)

    2010-09-01

    Core Parameters: The measurements that are required as part of the ETV verification. Cyst: The dormant cell or resting stage of microalgae ...105 organisms/m3 Protists Tetraselmis sp. Green microalgae 103 organisms/mL Bacteria Geobacillus sp. Geobacillus sp. 103 organisms/mL 1 The volumes...observation periods. Within this size class fall dormant cells or resting stages exhibited across a broad phylogenetic range of microalgae

  11. Independent Validation and Verification of Process Design and Optimization Technology Diagnostic and Control of Natural Gas Fired Furnaces via Flame Image Analysis Technology

    Energy Technology Data Exchange (ETDEWEB)

    Cox, Daryl [ORNL

    2009-05-01

    The United States Department of Energy, Industrial Technologies Program has invested in emerging Process Design and Optimizations Technologies (PDOT) to encourage the development of new initiatives that might result in energy savings in industrial processes. Gas fired furnaces present a harsh environment, often making accurate determination of correct air/fuel ratios a challenge. Operation with the correct air/fuel ratio and especially with balanced burners in multi-burner combustion equipment can result in improved system efficiency, yielding lower operating costs and reduced emissions. Flame Image Analysis offers a way to improve individual burner performance by identifying and correcting fuel-rich burners. The anticipated benefit of this technology is improved furnace thermal efficiency, and lower NOx emissions. Independent validation and verification (V&V) testing of the FIA technology was performed at Missouri Forge, Inc., in Doniphan, Missouri by Environ International Corporation (V&V contractor) and Enterprise Energy and Research (EE&R), the developer of the technology. The test site was selected by the technology developer and accepted by Environ after a meeting held at Missouri Forge. As stated in the solicitation for the V&V contractor, 'The objective of this activity is to provide independent verification and validation of the performance of this new technology when demonstrated in industrial applications. A primary goal for the V&V process will be to independently evaluate if this technology, when demonstrated in an industrial application, can be utilized to save a significant amount of the operating energy cost. The Seller will also independently evaluate the other benefits of the demonstrated technology that were previously identified by the developer, including those related to product quality, productivity, environmental impact, etc'. A test plan was provided by the technology developer and is included as an appendix to the summary report

  12. Evaluation of Convergent Spray Technology(TM) Spray Process for Roof Coating Application

    Science.gov (United States)

    Scarpa, J.; Creighton, B.; Hall, T.; Hamlin, K.; Howard, T.

    1998-01-01

    The overall goal of this project was to demonstrate the feasibility of(CST) Convergent Spray Technology (Trademark) for the roofing industry. This was accomplished by producing an environmentally compliant coating utilization recycled materials, a CST(Trademark) spray process portable application cart, and hand-held applicator with a CST(Trademark) spray process nozzle. The project culminated with application of this coating to a nine hundred sixty square foot metal for NASA Marshall Space Flight Center (MSFC) in Huntsville, Alabama.

  13. DOD Initiatives to Rapidly Transition Advanced Coating and Surface Finishing Technologies for Military Turbine Engine Manufacture and Repair

    Science.gov (United States)

    2005-03-21

    of PEWG Projects Involving Plating, Coating, and Surface Finishing • Advanced thermal spray coatings (HVOF) • Electrospark deposition • Laser...EWI, GEAE, P&W, Rolls-Royce FUNDING SOURCES RTOC STATUS OC-ALC request for FY06 Funding 3/21/2005 22 Other Technologies • Electrospark Deposition for...Aircraft Engines PEWG MANAGER Chuck Alford, Anteon Corp TECHNOLOGY OPPORTUNITY ADVANTAGES: Kinetic spray technologies deposit thick coatings with a

  14. Design verification of a compact system for detecting tissue perfusion using bimodal diffuse optical technologies

    Science.gov (United States)

    Pakela, Julia M.; Hedrick, Taylor L.; Lee, Seung Yup; Vishwanath, Karthik; Zanfardino, Sara; Chung, Yooree G.; Helton, Michael C.; Kolodziejski, Noah J.; Stapels, Christopher J.; McAdams, Daniel R.; Fernandez, Daniel E.; Christian, James F.; Feinberg, Stephen E.; Mycek, Mary-Ann

    2017-02-01

    It is essential to monitor tissue perfusion during and after reconstructive surgery, as restricted blood flow can result in graft failures. Current clinical procedures are insufficient to monitor tissue perfusion, as they are intermittent and often subjective. To address this unmet clinical need, a compact, low-cost, multimodal diffuse correlation spectroscopy and diffuse reflectance spectroscopy system was developed. We verified system performance via tissue phantoms and experimental protocols for rigorous bench testing. Quantitative data analysis methods were employed and tested to enable the extraction of tissue perfusion parameters. This design verification study assures data integrity in future in vivo studies.

  15. 浅谈路面透层、粘层施工工艺%Brief Discussion on Construction Technology of Prime Coat and Tack Coat in Pavement

    Institute of Scientific and Technical Information of China (English)

    刘金涛

    2012-01-01

    Material quality requirement, construction technology, quality management and acceptance re- quirement of prime coat and tack coat in pavement are introduced.%介绍了路面透层及粘层的材料质量要求、施工工艺、质量管理和验收要求。

  16. Surface Diagnostics in Tribology Technology and Advanced Coatings Development

    Science.gov (United States)

    Miyoshi, Kazuhisa

    1999-01-01

    This paper discusses the methodologies used for surface property measurement of thin films and coatings, lubricants, and materials in the field of tribology. Surface diagnostic techniques include scanning electron microscopy, transmission electron microscopy, atomic force microscopy, stylus profilometry, x-ray diffraction, electron diffraction, Raman spectroscopy, Rutherford backscattering, elastic recoil spectroscopy, and tribology examination. Each diagnostic technique provides specific measurement results in its own unique way. In due course it should be possible to coordinate the different pieces of information provided by these diagnostic techniques into a coherent self-consistent description of the surface properties. Examples are given on the nature and character of thin diamond films.

  17. Development of Process Analytical Technology (PAT) methods for controlled release pellet coating.

    Science.gov (United States)

    Avalle, P; Pollitt, M J; Bradley, K; Cooper, B; Pearce, G; Djemai, A; Fitzpatrick, S

    2014-07-01

    This work focused on the control of the manufacturing process for a controlled release (CR) pellet product, within a Quality by Design (QbD) framework. The manufacturing process was Wurster coating: firstly layering active pharmaceutical ingredient (API) onto sugar pellet cores and secondly a controlled release (CR) coating. For each of these two steps, development of a Process Analytical Technology (PAT) method is discussed and also a novel application of automated microscopy as the reference method. Ultimately, PAT methods should link to product performance and the two key Critical Quality Attributes (CQAs) for this CR product are assay and release rate, linked to the API and CR coating steps respectively. In this work, the link between near infra-red (NIR) spectra and those attributes was explored by chemometrics over the course of the coating process in a pilot scale industrial environment. Correlations were built between the NIR spectra and coating weight (for API amount), CR coating thickness and dissolution performance. These correlations allow the coating process to be monitored at-line and so better control of the product performance in line with QbD requirements. Copyright © 2014 Elsevier B.V. All rights reserved.

  18. Thermodynamic aspects of the coating formation through mechanochemical synthesis in vibration technology systems

    Science.gov (United States)

    Shtyn, S. U.; Lebedev, V. A.; Gorlenko, A. O.

    2017-02-01

    On the basis of thermodynamic concepts of the process, we proposed an energy model that reflects the mechanochemical essence of coating forming in terms of vibration technology systems, which takes into account the contribution to the formation of the coating, the increase of unavailable energy due to the growth of entropy, the increase in the energy of elastic-plastic crystal lattice distortion as a result of the mechanical influence of working environment indenters, surface layer internal energy change which occurs as a result of chemical interaction of the contacting media. We proposed adhesion strength of the local volume modified through processing as a criterion of the energy condition of the formed coating. We established analytical dependence which helps to obtain the coating strength of the material required by operating conditions.

  19. Unidirectional coating technology for organic field-effect transistors: materials and methods

    Science.gov (United States)

    Sun, Huabin; Wang, Qijing; Qian, Jun; Yin, Yao; Shi, Yi; Li, Yun

    2015-05-01

    Solution-processed organic field-effect transistors (OFETs) are essential for developing organic electronics. The encouraging development in solution-processed OFETs has attracted research interest because of their potential in low-cost devices with performance comparable to polycrystalline-silicon-based transistors. In recent years, unidirectional coating technology, featuring thin-film coating along only one direction and involving specific materials as well as solution-assisted fabrication methods, has attracted intensive interest. Transistors with organic semiconductor layers, which are deposited via unidirectional coating methods, have achieved high performance. In particular, carrier mobility has been greatly enhanced to values much higher than 10 cm2 V-1 s-1. Such significant improvement is mainly attributed to better control in morphology and molecular packing arrangement of organic thin film. In this review, typical materials that are being used in OFETs are discussed, and demonstrations of unidirectional coating methods are surveyed.

  20. The Technology and Properties of Digital Double Pulse Electrodepositing Ni-HA Composite Coating of Bioceramics

    Institute of Scientific and Technical Information of China (English)

    DONG He-yan; WANG Zhou; SHI Gu-guizhi; FU Chuan-qi; CHEN Wei-rong; JIN Zhong-hong; LI Yan

    2004-01-01

    This article discusses and analyses the technology, the surface image, microstructure and ability of digital double pulse electrodepositing Ni-HA composite coatings of bioceramics made on 1Crl8Ni9Ti substrate by SEM ,XRD and so on. The results shows that ( 1 ) the HA particles exit in substrate uniformly; (2) XRD result shows that there are HA peaks at 78. 023 ° ,43. 246°and 73. 120°differently; (3) The microhardnees of the composite coatings is increased with the rise of content of HA particles, and on the same conditions the microhardnees value is greater than that of common non-pulse electrodepositing Ni-HA composite coatings of bioceramics. (4) The grain size of digital double pulse electrodepositing Ni-HA composite coatings of bioceramics is much thinner than that of common D. C.

  1. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT; UV DISINFECTION FOR REUSE APPLICATION, AQUIONICS, INC. BERSONINLINE 4250 UV SYSTEM

    Science.gov (United States)

    Verification testing of the Aquionics, Inc. bersonInLine® 4250 UV System to develop the UV delivered dose flow relationship was conducted at the Parsippany-Troy Hills Wastewater Treatment Plant test site in Parsippany, New Jersey. Two full-scale reactors were mounted in series. T...

  2. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT: UV DISINFECTION FOR REUSE APPLICATIONS, ONDEO DEGREMONT, INC., AQUARAY® 40 HO VLS DISINFECTION SYSTEM

    Science.gov (United States)

    Verification testing of the Ondeo Degremont, Inc. Aquaray® 40 HO VLS Disinfection System to develop the UV delivered dose flow relationship was conducted at the Parsippany-Troy Hills wastewater treatment plant test site in Parsippany, New Jersey. Three reactor modules were m...

  3. Development of Diffusion barrier coatings and Deposition Technologies for Mitigating Fuel Cladding Chemical Interactions (FCCI)

    Energy Technology Data Exchange (ETDEWEB)

    Sridharan, Kumar; Allen, Todd; Cole, James

    2013-02-27

    The goal of this project is to develop diffusion barrier coatings on the inner cladding surface to mitigate fuel-cladding chemical interaction (FCCI). FCCI occurs due to thermal and radiation enhanced inter-diffusion between the cladding and fuel materials, and can have the detrimental effects of reducing the effective cladding wall thickness and lowering the melting points of the fuel and cladding. The research is aimed at the Advanced Burner Reactor (ABR), a sodium-cooled fast reactor, in which higher burn-ups will exacerbate the FCCI problem. This project will study both diffusion barrier coating materials and deposition technologies. Researchers will investigate pure vanadium, zirconium, and titanium metals, along with their respective oxides, on substrates of HT-9, T91, and oxide dispersion-strengthened (ODS) steels; these materials are leading candidates for ABR fuel cladding. To test the efficacy of the coating materials, the research team will perform high-temperature diffusion couple studies using both a prototypic metallic uranium fuel and a surrogate the rare-earth element lanthanum. Ion irradiation experiments will test the stability of the coating and the coating-cladding interface. A critical technological challenge is the ability to deposit uniform coatings on the inner surface of cladding. The team will develop a promising non-line-of-sight approach that uses nanofluids . Recent research has shown the feasibility of this simple yet novel approach to deposit coatings on test flats and inside small sections of claddings. Two approaches will be investigated: 1) modified electrophoretic deposition (MEPD) and 2) boiling nanofluids. The coatings will be evaluated in the as-deposited condition and after sintering.

  4. CANDU RU fuel manufacturing basic technology development and advanced fuel verification tests

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Chang Hwan; Chang, S.K.; Hong, S.D. [and others

    1999-04-01

    A PHWR advanced fuel named the CANFLEX fuel has been developed through a KAERI/AECL joint Program. The KAERI made fuel bundle was tested at the KAERI Hot Test Loop for the performance verification of the bundle design. The major test activities were the fuel bundle cross-flow test, the endurance fretting/vibration test, the freon CHF test, and the fuel bundle heat-up test. KAERI also has developing a more advanced PHWR fuel, the CANFLEX-RU fuel, using recovered uranium to extend fuel burn-up in the CANDU reactors. For the purpose of proving safety of the RU handling techniques and appraising feasibility of the CANFLEX-RU fuel fabrication in near future, a physical, chemical and radiological characterization of the RU powder and pellets was performed. (author). 54 refs., 46 tabs., 62 figs.

  5. In vitro cell quality of buffy coat platelets in additive solution treated with pathogen reduction technology

    DEFF Research Database (Denmark)

    Ostrowski, Sisse R; Bochsen, Louise; Salado-Jimena, José A

    2010-01-01

    Pathogen reduction technologies (PRTs) may induce storage lesion in platelet (PLT) concentrates. To investigate this, buffy coat PLTs (BCPs) in PLT additive solution (AS; SSP+) with or without Mirasol PRT (CaridianBCT Biotechnologies) were assessed by quality control tests and four-color flow...

  6. Technology transfer metrics: Measurement and verification of data/reusable launch vehicle business analysis

    Science.gov (United States)

    Trivoli, George W.

    1996-01-01

    Congress and the Executive Branch have mandated that all branches of the Federal Government exert a concentrated effort to transfer appropriate government and government contractor-developed technology to the industrial use in the U.S. economy. For many years, NASA has had a formal technology transfer program to transmit information about new technologies developed for space applications into the industrial or commercial sector. Marshall Space Flight Center (MSFC) has been in the forefront of the development of U.S. industrial assistance programs using technologies developed at the Center. During 1992-93, MSFC initiated a technology transfer metrics study. The MSFC study was the first of its kind among the various NASA centers. The metrics study is a continuing process, with periodic updates that reflect on-going technology transfer activities.

  7. Dual-coated lactic acid bacteria: an emerging innovative technology in the field of probiotics.

    Science.gov (United States)

    Alvarez-Calatayud, Guillermo; Margolles, Abelardo

    2016-01-01

    Probiotics are living micro-organisms that do not naturally have shelf life, and normally are weakly protected against the digestive action of the GI tract. A new dual coating technology has been developed in an effort to maximize survival, that is, to be able to reach the intestine alive and in sufficient numbers to confer the beneficial health effects on the host. Dual-coating of lactic acid bacteria (LAB) is the result of fourth-generation coating technology for the protection of these bacteria at least 100-fold or greater than the uncoated LAB. This innovative technique involves a first pH-dependent protein layer that protects bacteria from gastric acid and bile salt, and a second polysaccharide matrix that protects bacteria from external factors, such as humidity, temperature and pressure, as well as the digestive action during the passage through the GI tract. Dual-coated probiotic formulation is applicable to different therapeutic areas, including irritable bowel syndrome, atopic dermatitis, acute diarrhea, chronic constipation, Helicobacter pylori eradication, and prevention of antibiotic-associated diarrhea. An updated review of the efficacy of doubly coated probiotic strains for improving bacterial survival in the intestinal tract and its consequent clinical benefits in humans is here presented.

  8. Coatings manufactured using magnetron sputtering technology to protect against infrared radiation for use in firefighter helmets

    Directory of Open Access Journals (Sweden)

    Fejdyś Marzena

    2016-09-01

    Full Text Available The aim of this study was to test the usefulness of magnetron sputtering technology to produce coatings on selected elements of a firefighter’s helmet to protect against infrared radiation (PN-EN 171 standard. The scope of research includes testing the deposition produced via magnetron sputtering of metallic and ceramic coatings on plastics, which are used to manufacture the components comprising the personal protection equipment used by firefighters. The UV-VIS, NIR used to research the permeation coefficients and reflections for light and infrared light and the emission spectrometry with ICP-AES used for the quantitative analysis of elements in metallic and ceramic coatings. Microstructural and micro-analytical testing of the coatings were performed using scanning electron microscopy (SEM. Measurements of the chemical compositions were conducted using energy-dispersive X-ray spectroscopy (EDS. The hardnesss of the coatings were tested using a indentation method, and the coating thicknesses were tested using a ellipsometry method.

  9. Hafnia-Based Nanostructured Thermal Barrier Coatings for Advanced Hydrogen Turbine Technology

    Energy Technology Data Exchange (ETDEWEB)

    Ramana, Chintalapalle; Choudhuri, Ahsan

    2013-01-31

    Thermal barrier coatings (TBCs) are critical technologies for future gas turbine engines of advanced coal based power generation systems. TBCs protect engine components and allow further increase in engine temperatures for higher efficiency. In this work, nanostructured HfO{sub 2}-based coatings, namely Y{sub 2}O{sub 3}-stabilized HfO{sub 2} (YSH), Gd{sub 2}O{sub 3}-stabilized HfO{sub 2} (GSH) and Y{sub 2}O{sub 3}-stabilized ZrO{sub 2}-HfO{sub 2} (YSZH) were investigated for potential TBC applications in hydrogen turbines. Experimental efforts are aimed at creating a fundamental understanding of these TBC materials. Nanostructured ceramic coatings of YSH, GSH and YSZH were grown by physical vapor deposition methods. The effects of processing parameters and ceramic composition on the microstructural evolution of YSH, GSH and YSZH nanostructured coatings was studied using combined X-ray diffraction (XRD) and Electron microscopy analyses. Efforts were directed to derive a detailed understanding of crystal-structure, morphology, and stability of the coatings. In addition, thermal conductivity as a function of composition in YSH, YSZH and GSH coatings was determined. Laboratory experiments using accelerated test environments were used to investigate the relative importance of various thermo-mechanical and thermo-chemical failure modes of TBCs. Effects of thermal cycling, oxidation and their complex interactions were evaluated using a syngas combustor rig.

  10. Comparison of different technologies for high-quality optical coatings

    Science.gov (United States)

    Flory, Francois

    1990-08-01

    Modern optical systems require still higher quality optical coatings. Conventional production techniques are not able to give such high quality layers. One of the main defaults comes from the relatively porous structure of the thin films; as a consequence the sensitiveness of the materials to the moisture gives noticeably unstable properties versus time. In this work, after a very short review of the different techniques nowaday used to perform high quality optical thin films, we will be especially interested in oxide layer production (Si02, Ta2O5, Ti02). To give a good comparison of the performances obtained with techniques such as TAD and ion plating we need extremely powerful characterization means: - In vacuo measurements of optical properties allowing the study of spontaneous water adsorption during air entrance; - Absorption measurement with photothermal deflection spectroscopy; - Scattering losses measurements and consequently determination of the grain size of the microstructure. Refractive index measurements, and optical anisotropy determined by guided mode study. Finally some views from electron microscopy justify the validity of the model used with our characterization techniques. To end, we will show the interest of ion plating technique when we are looking for very uniform deposition on large surfaces.

  11. Design Considerations and Experimental Verification of a Rail Brake Armature Based on Linear Induction Motor Technology

    Science.gov (United States)

    Sakamoto, Yasuaki; Kashiwagi, Takayuki; Hasegawa, Hitoshi; Sasakawa, Takashi; Fujii, Nobuo

    This paper describes the design considerations and experimental verification of an LIM rail brake armature. In order to generate power and maximize the braking force density despite the limited area between the armature and the rail and the limited space available for installation, we studied a design method that is suitable for designing an LIM rail brake armature; we considered adoption of a ring winding structure. To examine the validity of the proposed design method, we developed a prototype ring winding armature for the rail brakes and examined its electromagnetic characteristics in a dynamic test system with roller rigs. By repeating various tests, we confirmed that unnecessary magnetic field components, which were expected to be present under high speed running condition or when a ring winding armature was used, were not present. Further, the necessary magnetic field component and braking force attained the desired values. These studies have helped us to develop a basic design method that is suitable for designing the LIM rail brake armatures.

  12. Research Update: Large-area deposition, coating, printing, and processing techniques for the upscaling of perovskite solar cell technology

    Science.gov (United States)

    Razza, Stefano; Castro-Hermosa, Sergio; Di Carlo, Aldo; Brown, Thomas M.

    2016-09-01

    To bring perovskite solar cells to the industrial world, performance must be maintained at the photovoltaic module scale. Here we present large-area manufacturing and processing options applicable to large-area cells and modules. Printing and coating techniques, such as blade coating, slot-die coating, spray coating, screen printing, inkjet printing, and gravure printing (as alternatives to spin coating), as well as vacuum or vapor based deposition and laser patterning techniques are being developed for an effective scale-up of the technology. The latter also enables the manufacture of solar modules on flexible substrates, an option beneficial for many applications and for roll-to-roll production.

  13. Improvements in Boron Plate Coating Technology for Higher Efficiency Neutron Detection and Coincidence Counting Error Reduction

    Energy Technology Data Exchange (ETDEWEB)

    Menlove, Howard Olsen [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Henzlova, Daniela [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-08-25

    This informal report presents the measurement data and information to document the performance of the advanced Precision Data Technology, Inc. (PDT) sealed cell boron-10 plate neutron detector that makes use of the advanced coating materials and procedures. In 2015, PDT changed the boron coating materials and application procedures to significantly increase the efficiency of their basic corrugated plate detector performance. A prototype sealed cell unit was supplied to LANL for testing and comparison with prior detector cells. Also, LANL had reference detector slabs from the original neutron collar (UNCL) and the new Antech UNCL with the removable 3He tubes. The comparison data is presented in this report.

  14. Color deviation controlling of phosphor conformal coating by advanced spray painting technology for white LEDs.

    Science.gov (United States)

    Yang, Liang; Wang, Simin; Lv, Zhicheng; Liu, Sheng

    2013-04-01

    An advanced phosphor conformal coating technology is proposed, good correlated color temperature (CCT) and chromaticity uniformity samples are fabricated through phosphor spray painting technology. Spray painting technology is also suitable for phosphor conformal coating of whole LED wafers. The samples of different CCTs are obtained through controlling the phosphor film thickness in the range of 6-80 μm; CCT variation of samples can be controlled in the range of ±200 K. The experimental Δuv reveals that the spray painting method can obtain a much smaller CCT variation (Δuv of 1.36e(-3)) than the conventional dispensing method (Δuv of 11.86e(-3)) when the light is emitted at angles from -90° to +90°, and chromaticity area uniformity is also improved significantly.

  15. Printing versus coating - What will be the future production technology for printed electronics?

    Energy Technology Data Exchange (ETDEWEB)

    Glawe, Andrea; Eggerath, Daniel; Schäfer, Frank [KROENERT GmbH and Co KG, Schuetzenstrasse 105, 22761 Hamburg (Germany)

    2015-02-17

    The market of Large Area Organic Printed Electronics is developing rapidly to increase efficiency and quality as well as to lower costs further. Applications for OPV, OLED, RFID and compact Printed Electronic systems are increasing. In order to make the final products more affordable, but at the same time highly accurate, Roll to Roll (R2R) production on flexible transparent polymer substrates is the way forward. There are numerous printing and coating technologies suitable depending on the design, the product application and the chemical process technology. Mainly the product design (size, pattern, repeatability) defines the application technology.

  16. Printing versus coating - What will be the future production technology for printed electronics?

    Science.gov (United States)

    Glawe, Andrea; Eggerath, Daniel; Schäfer, Frank

    2015-02-01

    The market of Large Area Organic Printed Electronics is developing rapidly to increase efficiency and quality as well as to lower costs further. Applications for OPV, OLED, RFID and compact Printed Electronic systems are increasing. In order to make the final products more affordable, but at the same time highly accurate, Roll to Roll (R2R) production on flexible transparent polymer substrates is the way forward. There are numerous printing and coating technologies suitable depending on the design, the product application and the chemical process technology. Mainly the product design (size, pattern, repeatability) defines the application technology.

  17. The experimental verification of the condition of the magnetic material caused by different technological processes

    CERN Document Server

    Tumanski, S

    2000-01-01

    The changes of electrical steel parameters caused by different technological processes have been tested using the magnetovision method. The effects of cutting into the strips, stamping the shape, laser scribing, annealing, bending and stressing have been investigated.

  18. Optics Design for the U.S. SKA Technology Development Project Design Verification Antenna

    Science.gov (United States)

    Imbriale, W. A.; Baker, L.; Cortes-Medellin, G.

    2012-01-01

    The U.S. design concept for the Square Kilometer Array (SKA) program is based on utilizing a large number of 15 meter dish antennas. The Technology Development Project (TDP) is planning to design and build the first of these antennas to provide a demonstration of the technology and a solid base on which to estimate costs. This paper describes the performance of the selected optics design. It is a dual-shaped offset Gregorian design with a feed indexer that can accommodate corrugated horns, wide band single pixel feeds or phased array feeds.

  19. Optics Design for the U.S. SKA Technology Development Project Design Verification Antenna

    Science.gov (United States)

    Imbriale, W. A.; Baker, L.; Cortes-Medellin, G.

    2012-01-01

    The U.S. design concept for the Square Kilometer Array (SKA) program is based on utilizing a large number of 15 meter dish antennas. The Technology Development Project (TDP) is planning to design and build the first of these antennas to provide a demonstration of the technology and a solid base on which to estimate costs. This paper describes the performance of the selected optics design. It is a dual-shaped offset Gregorian design with a feed indexer that can accommodate corrugated horns, wide band single pixel feeds or phased array feeds.

  20. Development of fi lm forming formulation and technology of polymeric fi lm coating on Indotril tablets

    Directory of Open Access Journals (Sweden)

    L. I. Kucherenko

    2013-09-01

    Full Text Available Introduction. In previous researches we grounded expedience of «Indotril» tablets development; formulation and technology of "Indotril" tablet cores were developed. Received tablet cores should be covered by protective polymeric film with the purpose of unpleasant taste elimination, increase of tablets expiration date. Objective. The aim of our investigation was to develop the film forming composition and technology of polymeric film coating on «Indotril» tablets in pseudo-fluidized layer. Materials and Methods. As “Indotril” tablets cores should be covered by protective polymeric film we performed research designed to select efficient film forming solution. Thus modern filming agents were studied, besides such factors were investigated: concentration of film forming suspension, increase of tablet coat in mass, air temperature under gas distribution grid. Obtained tablets were checked according to pharmacopeia methods. Results and discussion. First we studied tablet compression force influence on main parameters of «Indotril» cores tablets: on crushing strength, abrasion in pseudo-fluidized layer unit and disintegration. Then for further investigation we chose «Indotril» cores tablets with crushing strength near 70 H, abrasion - up to 0,5% and disintegration time - not more than 10 minutes. We performed research to select film forming solution for covering “Indotril” tablets in pseudo-fluidized layer unit. As filming agents we used different samples of hydroxypropyl methylcellulose (HPMC by Japan company Shin-Etsu Chemical Co and English company Colorcon. Water HPMC solutions were prepared which contained plasticizer (propylene glycol, pigment (titanium IV dioxide and dye (tartrazine. Coating process of “Indotril” tablets was performed in laboratory pseudo-fluidized layer unit with the air temperature 75ºC under gas distribution grid. Variance analysis of experimental data on quality of coat surface showed insignificance as

  1. Environmental Technology Verification; Baghouse Filtration Products TTG Inc., TG100 Filtration Media (Tested August 2012)

    Science.gov (United States)

    Baghouses are air pollution control devices used to control particulate emissions from stationary sources and are among the technologies evaluated by the APCT Center. Baghouses and their accompanying filter media have long been one of the leading particulate control techniques fo...

  2. Environmental Technology Verification, Baghouse Filtration Products TTG Inc., TG800 Filtration Media (Tested August 2012)

    Science.gov (United States)

    Baghouses are air pollution control devices used to control particulate emissions from stationary sources and are among the technologies evaluated by the APCT Center. Baghouses and their accompanying filter media have long been one of the leading particulate control techniques fo...

  3. 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...

  4. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: COMM ENGINEERING, USA ENVIRONMENTAL VAPOR RECOVERY UNIT (EVRU)

    Science.gov (United States)

    This report documents the testing of a new technology that recovers and utilizes vapors from crude oil storage tanks employed in the oil production and processing industry. The COMM Engineering, USA Environmental Vapor Recovery Unit (EVRU) is a non-mechanical eductor, or jet pump...

  5. Aspects concerning verification methods and rigidity increment of complex technological systems

    Science.gov (United States)

    Casian, M.

    2016-11-01

    Any technological process and technology aims a quality and precise product, something almost impossible without high rigidity machine tools, equipment and components. Therefore, from the design phase, it is very important to create structures and machines with high stiffness characteristics. At the same time, increasing the stiffness should not raise the material costs. Searching this midpoint between high rigidity and minimum expenses leads to investigations and checks in structural components through various methods and techniques and sometimes quite advanced methods. In order to highlight some aspects concerning the significance of the mechanical equipment rigidity, the finite element method and an analytical method based on the use Mathcad software were used, by taking into consideration a subassembly of a grinding machine. Graphical representations were elaborated, offering a more complete image about the stresses and deformations able to affect the considered mechanical subassembly.

  6. System Verification Through Reliability, Availability, Maintainability (RAM) Analysis & Technology Readiness Levels (TRLs)

    Energy Technology Data Exchange (ETDEWEB)

    Emmanuel Ohene Opare, Jr.; Charles V. Park

    2011-06-01

    The Next Generation Nuclear Plant (NGNP) Project, managed by the Idaho National Laboratory (INL), is authored by the Energy Policy Act of 2005, to research, develop, design, construct, and operate a prototype fourth generation nuclear reactor to meet the needs of the 21st Century. A section in this document proposes that the NGNP will provide heat for process heat applications. As with all large projects developing and deploying new technologies, the NGNP is expected to meet high performance and availability targets relative to current state of the art systems and technology. One requirement for the NGNP is to provide heat for the generation of hydrogen for large scale productions and this process heat application is required to be at least 90% or more available relative to other technologies currently on the market. To reach this goal, a RAM Roadmap was developed highlighting the actions to be taken to ensure that various milestones in system development and maturation concurrently meet required availability requirements. Integral to the RAM Roadmap was the use of a RAM analytical/simulation tool which was used to estimate the availability of the system when deployed based on current design configuration and the maturation level of the system.

  7. INNOVATIVE TECHNOLOGY VERIFICATION REPORT "FIELD MEASUREMENT TECHNOLOGIES FOR TOTAL PETROLEUM HYDROCARBONS IN SOIL" HORIBA INSTRUMENTS INCORPORATED OCMA-350 CONTENT ANALYZER

    Science.gov (United States)

    The OCMA-350 Oil Content Analyzer(OCMA-350) developed by Horiba Instruments Incorporated (Horiba), was demonstrated under the U.S. Environmental Protection Agency Superfund Innovative Technology Evaluation Program in June 2000 at the Navy Base Ventura County site in Port Huen...

  8. Processing, properties and applications of composites using powder-coated epoxy towpreg technology

    Science.gov (United States)

    Bayha, T. D.; Osborne, P. P.; Thrasher, T. P.; Hartness, J. T.; Johnston, N. J.; Marchello, J. M.; Hugh, M. K.

    1993-01-01

    Composite manufacturing using the current prepregging technology of impregnating liquid resin into three-dimensionally reinforced textile preforms can be a costly and difficult operation. Alternatively, using polymer in the solid form, grinding it into a powder, and then depositing it onto a carbon fiber tow prior to making a textile preform is a viable method for the production of complex textile shapes. The powder-coated towpreg yarn is stable, needs no refrigeration, contains no solvents and is easy to process into various woven and braided preforms for later consolidation into composite structures. NASA's Advanced Composites Technology (ACT) program has provided an avenue for developing the technology by which advanced resins and their powder-coated preforms may be used in aircraft structures. Two-dimensional braiding and weaving studies using powder-coated towpreg have been conducted to determine the effect of resin content, towpreg size and twist on textile composite properties. Studies have been made to customize the towpreg to reduce friction and bulk factor. Processing parameters have been determined for three epoxy resin systems on eight-harness satin fabric, and on more advanced 3-D preform architectures for the downselected resin system. Processing effects and the resultant mechanical properties of these textile composites will be presented and compared.

  9. Integration of multidisciplinary technologies for real time target visualization and verification for radiotherapy

    Directory of Open Access Journals (Sweden)

    Chang WC

    2014-06-01

    Full Text Available Wen-Chung Chang,1,* Chin-Sheng Chen,2,* Hung-Chi Tai,3 Chia-Yuan Liu,4,5 Yu-Jen Chen3 1Department of Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan; 2Graduate Institute of Automation Technology, National Taipei University of Technology, Taipei, Taiwan; 3Department of Radiation Oncology, Mackay Memorial Hospital, Taipei, Taiwan; 4Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan; 5Department of Medicine, Mackay Medical College, New Taipei City, Taiwan  *These authors contributed equally to this work Abstract: The current practice of radiotherapy examines target coverage solely from digitally reconstructed beam's eye view (BEV in a way that is indirectly accessible and that is not in real time. We aimed to visualize treatment targets in real time from each BEV. The image data of phantom or patients from ultrasound (US and computed tomography (CT scans were captured to perform image registration. We integrated US, CT, US/CT image registration, robotic manipulation of US, a radiation treatment planning system, and a linear accelerator to constitute an innovative target visualization system. The performance of this algorithm segmented the target organ in CT images, transformed and reconstructed US images to match each orientation, and generated image registration in real time mode with acceptable accuracy. This image transformation allowed physicians to visualize the CT image-reconstructed target via a US probe outside the BEV that was non-coplanar to the beam's plane. It allowed the physicians to remotely control the US probe that was equipped on a robotic arm to dynamically trace and real time monitor the coverage of the target within the BEV during a simulated beam-on situation. This target visualization system may provide a direct remotely accessible and real time way to visualize, verify, and ensure tumor targeting during radiotherapy. Keywords: ultrasound, computerized tomography

  10. U.S. EPA honors San Francisco Bay Area firm Hybrid Coating Technologies with Green Chemistry Award

    Science.gov (United States)

    SAN FRANCISCO - Today the U.S. Environmental Protection Agency recognized Hybrid Coating Technologies of Daly City, Calif. with a Presidential Green Chemistry Award for developing a safer, plant-based polyurethane for use on floors, furniture and in

  11. Characterizations of microwave plasma CVD grown polycrystalline diamond coatings for advanced technological applications

    Directory of Open Access Journals (Sweden)

    Awadesh Kumar Mallik

    2014-06-01

    Full Text Available Polycrystalline diamond (PCD coatings ranging from few microns to several hundred microns thickness have been grown by 915 MHz microwave plasma reactor with 9000 W power. The coatings were deposited on 100 mm diameter silicon (Si substrate from few hours to several days of continuous runs. PCD coatings were made freestanding by wet chemical etching technique. The deposited PCDs were evaluated by X-ray diffraction (XRD, scanning electron microscopy (SEM, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS for physical characterization and compared with authors’ earlier work. Refractive index of 2.41 was obtained at 633 nm wavelength and a maximum of 6.6 W·cm-1K-1 value for thermal conductivity could be achieved with the grown coatings. The values are well above the existing non-diamond heat spreading substrates, which makes the grown PCDs as candidates for heat spreaders in different technological applications. High refractive index along with translucent nature of the white freestanding PCDs, make them potential candidate for optical windows.

  12. Calcium Phosphate Bioceramics: A Review of Their History, Structure, Properties, Coating Technologies and Biomedical Applications

    Science.gov (United States)

    Eliaz, Noam; Metoki, Noah

    2017-01-01

    Calcium phosphate (CaP) bioceramics are widely used in the field of bone regeneration, both in orthopedics and in dentistry, due to their good biocompatibility, osseointegration and osteoconduction. The aim of this article is to review the history, structure, properties and clinical applications of these materials, whether they are in the form of bone cements, paste, scaffolds, or coatings. Major analytical techniques for characterization of CaPs, in vitro and in vivo tests, and the requirements of the US Food and Drug Administration (FDA) and international standards from CaP coatings on orthopedic and dental endosseous implants, are also summarized, along with the possible effect of sterilization on these materials. CaP coating technologies are summarized, with a focus on electrochemical processes. Theories on the formation of transient precursor phases in biomineralization, the dissolution and reprecipitation as bone of CaPs are discussed. A wide variety of CaPs are presented, from the individual phases to nano-CaP, biphasic and triphasic CaP formulations, composite CaP coatings and cements, functionally graded materials (FGMs), and antibacterial CaPs. We conclude by foreseeing the future of CaPs. PMID:28772697

  13. Feature-Aware Verification

    CERN Document Server

    Apel, Sven; Wendler, Philipp; von Rhein, Alexander; Beyer, Dirk

    2011-01-01

    A software product line is a set of software products that are distinguished in terms of features (i.e., end-user--visible units of behavior). Feature interactions ---situations in which the combination of features leads to emergent and possibly critical behavior--- are a major source of failures in software product lines. We explore how feature-aware verification can improve the automatic detection of feature interactions in software product lines. Feature-aware verification uses product-line verification techniques and supports the specification of feature properties along with the features in separate and composable units. It integrates the technique of variability encoding to verify a product line without generating and checking a possibly exponential number of feature combinations. We developed the tool suite SPLverifier for feature-aware verification, which is based on standard model-checking technology. We applied it to an e-mail system that incorporates domain knowledge of AT&T. We found that feat...

  14. Effect of pretreating technologies on the adhesive strength and anticorrosion property of Zn coated NdFeB specimens

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Pengjie [School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China); Earth-Panda Advance Magnetic Material Co. Ltd., Hefei (China); Anhui Province Key Laboratory of Rare Earth Permanent Magnet Materials, Hefei (China); State Key Laboratory of Rare Earth Permanent Magnet Materials (Earth-Panda Advance Magnetic Material Co., Ltd.), Hefei (China); Xu, Guangqing, E-mail: gqxu1979@hfut.edu.cn [School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China); Liu, Jiaqin [School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China); Yi, Xiaofei [School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China); Earth-Panda Advance Magnetic Material Co. Ltd., Hefei (China); Anhui Province Key Laboratory of Rare Earth Permanent Magnet Materials, Hefei (China); State Key Laboratory of Rare Earth Permanent Magnet Materials (Earth-Panda Advance Magnetic Material Co., Ltd.), Hefei (China); Wu, Yucheng, E-mail: ycwu@hfut.edu.cn [School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China); Chen, JingWu [Earth-Panda Advance Magnetic Material Co. Ltd., Hefei (China); Anhui Province Key Laboratory of Rare Earth Permanent Magnet Materials, Hefei (China); State Key Laboratory of Rare Earth Permanent Magnet Materials (Earth-Panda Advance Magnetic Material Co., Ltd.), Hefei (China)

    2016-02-15

    Graphical abstract: Zn coated NdFeB specimens pretreated with different technologies possess different adhesive strengths and anticorrosion properties. And the combined technology of sandblasting and pickling (5 s) achieves the best comprehensive performance. - Highlights: • Zn coated NdFeB specimens are achieved with different pretreating technologies. • Combined technology possesses the highest adhesive strength. • Combined technology possesses excellent anticorrosion property. - Abstract: Zinc coated NdFeB specimens were prepared with different pretreating technologies, such as polishing, pickling (50 s), sandblasting and combined technology of sandblasting and pickling (5 s). Morphologies of the NdFeB substrates pretreated with different technologies were observed with a scanning electron microscope equipped with an energy dispersive spectrometer and an atomic force microscope. The tensile test was performed to measure the adhesive strength between Zn coating and NdFeB substrate. The self-corrosion behavior of the NdFeB specimen was characterized by potentiodynamic polarization curve. The anticorrosion properties of Zn coated NdFeB specimens were characterized by neutral salt spray tests. The pretreating technologies possess obvious impact on the adhesive strength and anticorrosion property of Zn coated NdFeB specimens. Combined pretreating technology of sandblasting and pickling (5 s) achieves the highest adhesive strength (25.56 MPa) and excellent anticorrosion property (average corrosion current density of 21 μA/cm{sup 2}) in the four pretreating technologies. The impacting mechanisms of the pretreating technology on the adhesive strength and anticorrosion properties are deeply discussed.

  15. Preparation technology and anti-corrosion performances of black ceramic coatings formed by micro-arc oxidation on aluminum alloys

    Institute of Scientific and Technical Information of China (English)

    CHEN Ling; HAN Jing; YU Shengxue

    2006-01-01

    In order to prepare ornamental and anti-corrosive coating on aluminum alloys, preparation technology of black micro-arc ceramic coatings on Al alloys in silicate based electrolyte was studied.The influence of content of Na2WO4 and combination additive in solution on the performance of black ceramic coatings was studied; the anticorrosion performances of black ceramic coatings were evaluated through whole-immersion test and electrochemical method in 3.5% NaCl solution at different pH value; SEM and XRD were used to analyze the surface morphology and phase constitutes of the black ceramic coatings.Experimental results indicated that, without combination additives, with the increasing of Na2WO4 content in the electrolyte, ceramic coating became darker and thicker, but the color was not black; after adding combination additive, the coating turned to be black; the black ceramic coating was multi-hole form in surface.There was a small quantity of tungsten existing in the black ceramic coating beside α-Al2O3 phase and β-Al2O3 phase.And aluminum alloy with black ceramic coating exhibited excellent anti-corrosion property in acid, basic and neutral 3.5% NaCl solution.

  16. Automatic classification and defect verification based on inspection technology with lithography simulation

    Science.gov (United States)

    Kato, Masaya; Inuzuka, Hideki; Kosuge, Takeshi; Yoshikawa, Shingo; Kanno, Kayoko; Imai, Hidemichi; Miyashita, Hiroyuki; Vacca, Anthony; Fiekowsky, Peter; Fiekowsky, Dan

    2015-10-01

    Even small defects on the main patterns can create killer defects on the wafer, whereas the same defect on or near the decorative patterns may be completely benign to the wafer functionality. This ambiguity often causes operators and engineers to put a mask "on hold" to be analyzed by an AIMS™ tool which slows the manufacturing time and increases mask cost. In order to streamline the process, mask shops need a reliable way to quickly identify the wafer impact of defects during mask inspection review reducing the number of defects requiring AIMS™ analysis. Source Mask Optimization (SMO) techniques are now common on sub 20nm node critical reticle patterns These techniques create complex reticle patterns which often makes it difficult for inspection tool operators to identify the desired wafer pattern from the surrounding nonprinting patterns in advanced masks such as SMO, Inverse Lithography Technology (ILT), Negative Tone Development (NTD). In this study, we have tested a system that generates aerial simulation images directly from the inspection tool images. The resulting defect dispositions from a program defect test mask along with numerous production mask defects have been compared to the dispositions attained from AIMS™ analysis. The results of our comparisons are presented, as well as the impact to mask shop productivity.

  17. Study on the development of coating technology for UO{sub 2} nuclear fuel pellet and the microstructural observation of the coated layer

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Yong; Song, Moon Sup; Cho, In Sik; Kim Yu Sin; Lim Young Kyun [Sunmoon University, Asan (Korea)

    1998-04-01

    In order to enhance inherent safety of UO{sub 2} nuclear fuel pellet and develop future nuclear fuel technology, a coating method for the preparation multi-layers of pyrolytic carbon and silicon carbide on the fuel was developed. Inner pyrolytic carbon layer and outer silicon layer were prepared by thermal decomposition of propane in a fluidized bed type CVD unit and silane in ECR PECVD, respectively. Combustion reaction between two layers resulted in forming silicon carbide layer. The morphology depended on the initial carbon shape. Phase identification and microstructural analysis of the combustion product with XRD, AES, SEM and TEM showed that final products of inner layer and outer layer were pyrolytic carbon with isotropic structure and fine crystalline {beta}-SiC, respectively. This coating process is very useful for the fabrication of coated UO{sub 2} nuclear fuel pellet an future nuclear fuel fabrication technology. (author). 45 refs., 47 figs., 5 tabs.

  18. Pipeline walls hydrophobic properties study and their protective coatings used in trenchless technologies

    Directory of Open Access Journals (Sweden)

    Orlov Vladimir

    2016-01-01

    Full Text Available The results of field and theoretical studies to determine the degree of hydrophobicity of the inner pipe walls in static and dynamic conditions are reported. The water drops spreading nature in contact with the horizontal and concave surface of different materials with the definition of contact angles is determined. The flow pattern formed when the critical mass of liquid miniflow is reached on an inclined surface in the form of an open trough was studied. The geometric parameters of the frontal and coaxial miniflow projections were determined, its dimensions and hydraulic characteristics were studied. The trial stand design for the protective coatings hydrophobic properties study was presented and described and method of evaluation of the pipeline work surfaces hydrophobic properties by applying the relative hydrophobicity ratio. Calculation formulas of the relative hydrophobicity ratio for work surfaces were presented. The relationships of hydrophobicity of various coatings used in the trenchless technologies to relative roughness coefficients were established.

  19. SOLID RADIOACTIVE WASTE STORAGE TECHNOLOGIES: PERFORMANCE OF A POLYMER SEALANT COATING IN AN ARCTIC MARINE ENVIRONMENT

    Energy Technology Data Exchange (ETDEWEB)

    COWGILL,M.G.; MOSKOWITZ,P.D.; CHERNAENKO,L.M.; NAZARIAN,A.; GRIFFITH,A.; DIASHEV,A.; ENGOY,T.

    2000-06-14

    This first project, under the auspices of the Arctic Military Environmental Cooperation (AMEC) forum, Project 1.4-1 Solid Radioactive Waste Storage Technologies, successfully demonstrated the feasibility of using a polymer-based coating to seal concrete and steel surfaces from permanent radioactive contamination in an Arctic marine environment. A mobile, self-sufficient spraying device, was developed to specifications provided by the Russian Ministry of Defence Northern Navy and was deployed at the RTP Atomflot site, Murmansk, Russia. Demonstration coatings of Polibrid 705 were applied to concrete surfaces exposed to conditions ranging from indoor pedestrian usage to heavy vehicle passage and container handling in a loading bay. A large steel container was also coated with the polymer, filled with solid radwaste, sealed, and left out of doors and exposed to the full 12 month Arctic weather cycle. The field tests were accompanied by a series of laboratory qualification tests carried out at the research laboratory of ICC Nuclide in St. Petersburg. During the 12-month field tests, the sealant coating showed little sign of degradation except for a few chips and gouge marks on the loading bay surface that were readily repaired. Contamination resulting from radwaste handling was easily removed and the surface was not degraded by contact with the decontamination agents. In the laboratory testing, Polibrid 705 met all the Russian qualification requirements with the exception of flammability. In this last instance, it was decided to restrict application of the coating to land-based facilities. The Russian technical experts from the Ministry of Defence quickly familiarized themselves with the equipment and were able to identify several areas of potential improvement as deployment of the equipment progressed. The prime among these was the desirability of extending the range of the equipment through enlarged gasoline tanks (to permit extended operational times) and longer

  20. INFLUENCE OF TECHNOLOGICAL MODES OF MAGNETIC-ELECTRIC GRINDING ON MICROSTRUCTURE OF GAS-THERMAL SPRAYED NI–CR–B–SI-COATINGS

    OpenAIRE

    N. V. Spiridonov; M. V. Niaroda; I. O. Sokorov; A. A. Barkun

    2009-01-01

    Influence of technological modes of magnetic-electric grinding on structural changes in a surface layer of gas-thermal sprayed coatings is investigated in the paper. The paper presents optimum modes of  coating roughing and finishing processes.

  1. [The effect of technological parameters of wide-band laser cladding on microstructure and sinterability of gradient bioceramics composite coating].

    Science.gov (United States)

    Liu, Qibin; Zhu, Weidong; Zou, Longjiang; Zheng, Min; Dong, Chuang

    2005-12-01

    The gradient bioceramics coating was prepared on the surface of Ti-6Al-4V alloy by using wide-band laser cladding. And the effect of technological parameters of wide-band laser cladding on microstructure and sinterability of gradient bioceramics composite coating was studied. The experimental results indicated that in the circumstances of size of laser doze D and scanning velocity V being fixed, with the increasement of power P, the density of microstructure in bioceramics coating gradually degraded; with the increasement of power P, the pore rate of bioceramics gradually became high. While P = 2.3 KW, the bioceramics coating with dense structure and lower pore rate (5.11%) was obtained; while P = 2.9 KW, the bioceramics coating with disappointing density was formed and its pore rate was up to 21.32%. The microhardness of bioceramics coating demonstrated that while P = 2.3 KW, the largest value of microhardness of bioceramics coating was 1100 HV. Under the condition of our research work, the optimum technological parameters for preparing gradient bioceramics coating by wide-band laser cladding are: P = 2.3 KW, V = 145 mm/min, D = 16 mm x 2 mm.

  2. Technological Aspects of Forming the Surface Microrelief of Low-Wear Coatings after Electro-Diamond Grinding

    Science.gov (United States)

    Burov, V. G.; Yanpolskiy, V. V.; Rakhimyanov, K. Kh

    2016-04-01

    The results of electro-diamond grinding of coatings based on the WC25 powder material are presented in the paper. It is shown that after electro-diamond grinding of the WC25 coating, an obtained magnitude (Ra=2.02µm) of surface roughness doesn’t meet the qualifying standards to parts surface working in wear-out conditions. The forming of the obtained microrelief is probably connected to the features of electrochemical dissolution of the WC25 coating material in the electrolyte being used. Based on the polarization studies, it is revealed that the electrochemical dissolution character of the indicated coating in the water solution of 10%NaNO3 is determined by the dissolution character of cobalt (Co) component. The intensive cobalt (Co) dissolution during the electro-diamond grinding of the WC25 coating leads to the tungsten carbide chipping by the grinding disk particles that increases the roughness. One of the way to improve the surface quality of low-wear coatings after electro-diamond grinding is an introduction of an additional step in a technological process, carrying out with the switched off source of technological current. For realization of the process according to this scheme a technological dimension chain is made which takes into consideration the dissolution value of the most active coating composition element while the calculating of the operating dimensions of a detail.

  3. Nanocomposite coatings based on Ti-N-Cr/Ni-Cr-B-Si-Fe, gained by two technologies

    Directory of Open Access Journals (Sweden)

    N.K. Erdybayeva

    2009-01-01

    Full Text Available The first results of manufacturing and investigations of a new type of nanocomposite protective coatings are presented. They were manufactured using a combination of two technologies: plasma-detonation coating deposition with the help of plasma jets and thin coating vacuum-arc deposition. We investigated structure, morphology, physical and mechanical properties of the coatings of 80-90 μm thickness, as well as defined the hardness, elastic Young modulus and their corrosion resistance in different media. Grain dimensions of the nanocomposite coatings on Ti-N-Cr base varied from 2.8 to 4 nm. The following phases and compounds formed as a result of plasma interaction with the thick coating surface were found in the coatings: Ti-N-Cr (200, (220, y-Ni3-Fe, a hexagonal Cr2-Ti, Fe3-Ni, (Fe, NiN and the following Ti-Ni compounds: Ti2Ni, Ni3Ti, Ni4Ti, etc. We also found that the nanocomposite coating microhardness increased to H = 31.6 ± 1.1 GPa. The Young elastic modulus was determined to be E = 319 ± 27 GPa – it was derived from the loading-unloading curves. The protective coating demonstrated the increased corrosion resistance in acidic and alkaline media in comparison with that of the stainless steel substrate.

  4. Ultrafast Fabrication of Flexible Dye-Sensitized Solar Cells by Ultrasonic Spray-Coating Technology.

    Science.gov (United States)

    Han, Hyun-Gyu; Weerasinghe, Hashitha C; Min Kim, Kwang; Soo Kim, Jeong; Cheng, Yi-Bing; Jones, David J; Holmes, Andrew B; Kwon, Tae-Hyuk

    2015-09-30

    This study investigates novel deposition techniques for the preparation of TiO2 electrodes for use in flexible dye-sensitized solar cells. These proposed new methods, namely pre-dye-coating and codeposition ultrasonic spraying, eliminate the conventional need for time-consuming processes such as dye soaking and high-temperature sintering. Power conversion efficiencies of over 4.0% were achieved with electrodes prepared on flexible polymer substrates using this new deposition technology and N719 dye as a sensitizer.

  5. Research Update: Large-area deposition, coating, printing, and processing techniques for the upscaling of perovskite solar cell technology

    Directory of Open Access Journals (Sweden)

    Stefano Razza

    2016-09-01

    Full Text Available To bring perovskite solar cells to the industrial world, performance must be maintained at the photovoltaic module scale. Here we present large-area manufacturing and processing options applicable to large-area cells and modules. Printing and coating techniques, such as blade coating, slot-die coating, spray coating, screen printing, inkjet printing, and gravure printing (as alternatives to spin coating, as well as vacuum or vapor based deposition and laser patterning techniques are being developed for an effective scale-up of the technology. The latter also enables the manufacture of solar modules on flexible substrates, an option beneficial for many applications and for roll-to-roll production.

  6. Environmental technology verification methods

    CSIR Research Space (South Africa)

    Szewczuk, S

    2016-03-01

    Full Text Available is yet to be developed and applied for the South African market. This paper will describe the current international developments on ETV and how it could find application in South Africa that is lagging behind the implementation of such a tool....

  7. Large area SiC coating technology of RBSC for semiconductor processing component

    Energy Technology Data Exchange (ETDEWEB)

    Park, Ji Yeon; Kim, Weon Ju

    2001-06-01

    As the semiconductor process is developed for the larger area wafer and the larger-scale integration, the processing fixtures are required to have excellent mechanical and high temperature properties. This highlights the importance of silicon carbide-based materials as a substitute for quartz-based susceptors. In this study, SiC coating technology on reaction sintered (RS) SiC with thickness variation of +/- 10% within a diameter of 8 inch by low pressure chemical vapor deposition has been developed for making a plate type SiC fixture such as heater, baffle, etc., with a diameter of 12 inch. Additionally, a state of art on fabrication technology and products of the current commercial SiC fixtures has been described.

  8. The effect of chromium coating in RP technology for airfoil manufacturing

    Indian Academy of Sciences (India)

    S Daneshmand; C Aghanajafi; A Ahmadi Nadooshan

    2010-10-01

    Most wind tunnel models are fabricated of all metal components using computerized numerical control (CNC) milling machines. Fabrication of metal wind tunnel models is very expensive and time consuming. The models can require months to manufacture and are often made by small high technology companies that specialize in wind tunnel model manufacture. Using rapid prototype manufacturing techniques and materials in this way significantly reduces time and cost of production of wind tunnel models. This study was done by fused deposition modelling and their ability to make components for wind tunnel models in a timely and cost effective manner. This paper discusses the application of wind tunnel model configuration constructed using FDM and FDM with chromium coating for subsonic wind tunnel testing. A study was undertaken comparing a rapid prototyping model constructed of FDM technologies using polycarbonate to that of a standard machined steel model. Results from this study show relatively good agreement among the three models and rapid prototyping method with chromium coating does have an effect on the aerodynamic characteristics which produced satisfactory results.

  9. AN ENVIRONMENTAL TECHNOLOGY VERIFICATION (ETV) PERFORMANCE TESTING OF THE INDUSTRIAL TEST SYSTEM, INC. CYANIDE REAGENTSTRIP™ TEST KIT

    Science.gov (United States)

    Cyanide can be present in various forms in water. The cyanide test kit evaluated in this verification study (Industrial Test System, Inc. Cyanide Regent Strip ™ Test Kit) was designed to detect free cyanide in water. This is done by converting cyanide in water to cyanogen...

  10. Nuclear disarmament verification

    Energy Technology Data Exchange (ETDEWEB)

    DeVolpi, A.

    1993-12-31

    Arms control treaties, unilateral actions, and cooperative activities -- reflecting the defusing of East-West tensions -- are causing nuclear weapons to be disarmed and dismantled worldwide. In order to provide for future reductions and to build confidence in the permanency of this disarmament, verification procedures and technologies would play an important role. This paper outlines arms-control objectives, treaty organization, and actions that could be undertaken. For the purposes of this Workshop on Verification, nuclear disarmament has been divided into five topical subareas: Converting nuclear-weapons production complexes, Eliminating and monitoring nuclear-weapons delivery systems, Disabling and destroying nuclear warheads, Demilitarizing or non-military utilization of special nuclear materials, and Inhibiting nuclear arms in non-nuclear-weapons states. This paper concludes with an overview of potential methods for verification.

  11. Development of a Convergent Spray Technologies(tm) Spray Process for a Solventless Sprayable Coating, MCC-1

    Science.gov (United States)

    Patel, Anil K.; Meeks, C.

    1998-01-01

    This paper discusses the application of Convergent Spray Technologies (TM) Spray Process to the development and successful implementation of Marshall Convergent Coating (MCC-1) as a primary Thermal Protection System (TPS) for the Space Shuttle Solid Rocket Boosters (SRBs). This paper discusses the environmental and process benefits of the MCC-1 technology, shows the systematic steps taken in developing the technology, including statistical sensitivity studies of about 35 variables. Based on the process and post-flight successes on the SRB, it will be seen that the technology is "field-proven". Application of this technology to other aerospace and commercial programs is summarized to illustrate the wide range of possibilities.

  12. Technology of Anticorrosive Protection of Steel Constructions by Coatings Based on Rapid-Hardening Bitumen-Latex Emulsion

    Directory of Open Access Journals (Sweden)

    Nykyforchyn, H.M.

    2016-01-01

    Full Text Available The recipes of rapid-hardening bitumen-latex emulsions and coatings on its base are created, in-laboratory tests of their physical, chemical and anticorrosive properties are carried out. The technology of anticorrosive protection and the installation technical documentation for making of aqueous bitumen-latex emulsion is developed, installation is mounted and a pilot lot of rapid-hardening emulsion is produced. Experimental-industrial approbation of the technology of coating formation on pipes in oil and gas industry is carried out.

  13. Aluminide slurry coatings for protection of ferritic steel in molten nitrate corrosion for concentrated solar power technology

    Science.gov (United States)

    Audigié, Pauline; Bizien, Nicolas; Baráibar, Ignacio; Rodríguez, Sergio; Pastor, Ana; Hernández, Marta; Agüero, Alina

    2017-06-01

    Molten nitrates can be employed as heat storage fluids in solar concentration power plants. However molten nitrates are corrosive and if operating temperatures are raised to increase efficiencies, the corrosion rates will also increase. High temperature corrosion resistant coatings based on Al have demonstrated excellent results in other sectors such as gas turbines. Aluminide slurry coated and uncoated P92 steel specimens were exposed to the so called Solar Salt (industrial grade), a binary eutectic mixture of 60 % NaNO3 - 40 % KNO3, in air for 2000 hours at 550°C and 580°C in order to analyze their behavior as candidates to be used in future solar concentration power plants employing molten nitrates as heat transfer fluids. Coated ferritic steels constitute a lower cost technology than Ni based alloy. Two different coating morphologies resulting from two heat treatment performed at 700 and 1050°C after slurry application were tested. The coated systems exhibited excellent corrosion resistance at both temperatures, whereas uncoated P92 showed significant mass loss from the beginning of the test. The coatings showed very slow reaction with the molten Solar Salt. In contrast, uncoated P92 developed a stratified, unprotected Fe, Cr oxide with low adherence which shows oscillating Cr content as a function of coating depth. NaFeO2 was also found at the oxide surface as well as within the Fe, Cr oxide.

  14. Antifouling technology-past, present and future steps towards efficient and environmentally friendly antifouling coatings

    DEFF Research Database (Denmark)

    Yebra, Diego Meseguer; Kiil, Søren; Dam-Johansen, Kim

    2004-01-01

    . In addition, the most common booster biocides used to replace TBT-containing compounds are listed and described. It must be stressed that there is still a lack of knowledge of their potential environmental side effects. The current interest in providing innovative antifouling technologies based on an improved...... obstacles that need to be overcome for the success of this research are analysed. The potential development of broad-spectrum efficient coatings based on natural antifoulants is far from commercialisation. However, exploitation of a weakening of biofouling adhesion by means of the non-stick and fouling......-release concepts is at a rather advanced stage of development. The main advantages and drawbacks of these systems are presented along with a brief introduction to their scientific basis. Finally, other alternatives, which may eventually give rise to an efficient and environmentally benign antifouling system...

  15. Improvement of MEAs for direct-methanol fuel cells by tuned layer preparation and coating technology

    Energy Technology Data Exchange (ETDEWEB)

    Lindermeir, A.; Rosenthal, G.; Kunz, U.; Hoffmann, U. [Institute for Chemical Process Engineering, Technical University of Clausthal, Leibnizstrasse 17, D-38678 Clausthal-Zellerfeld (Germany)

    2004-04-01

    Large scale production of membrane electrode assemblies (MEAs) for fuel cells requires a fabrication technology, which is not only based on electrochemical phenomena but also takes into account aspects of materials processing and conversion. For the fabrication of MEAs for DMFC a production sequence consisting of wet ball-milling, wet spray coating and calendering was developed at the ICVT Clausthal. This has a proven ability for the preparation of diffusion backings and catalyst layers with high reproducibility. To improve MEA performance, investigations concerning the influence of layer fabrication and composition are made with respect to the resulting morphology of the structures. Intermediates and MEAs are evaluated by conductivity measurements, determination of permeability values and current density-voltage characteristics supported by SEM and optical microscopy. (Abstract Copyright [2004], Wiley Periodicals, Inc.)

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

    Science.gov (United States)

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

    2017-03-02

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

  17. 真空镀膜制备太阳能热吸收涂层%Preparation of solar heat absorption coatings by vacuum coating technology

    Institute of Scientific and Technical Information of China (English)

    眭凌杰; 尚心德

    2015-01-01

    本文介绍了选择性太阳能热吸收涂层的制备方法及发展状况,重点描述了真空镀膜在金属卷材上制备选择性太阳能热吸收涂层。该涂层用在平板太阳能集热器上,促进了太阳能集热器由单一的真空玻璃管型向金属平板型的转变。%This article introduces the preparation method and development state of the selective solar heat absorption coatings, mainly describes the selective solar heat absorption coatings preparation on the metal coil material by vacuum coating technology. The coatings are used on the flat-plate solar collectors, to promote the solar absorber type transfer from single vacuum glass tube to metal flat-plate.

  18. Sustained release tablet of theophylline by hot melt wax coating technology

    OpenAIRE

    Padsalgi Amol; Bidkar Sanjay; Jadhav Vijay; Sheladiya Deepak

    2008-01-01

    Coating is one of the effective method used for sustaining the release of dosage form. There are various hydrophilic and hydrophilic polymers which are use to sustain the drug release. Waxes are one of the material which can be use to coat the drug in order to control the release. Coating with waxes can be achieved by dissolving it in suitable solvent or by hot melt wax coating. Hot melt coating technique defined as the application of fine layer of coating material in molten state over the su...

  19. Capillary Column Coated With Heptakis(2,3,6-tri-O-octyl)-β-cyclodextrin Using Sol-gel Technology

    Institute of Scientific and Technical Information of China (English)

    Xiao Xia GE; Ruo Nong FU; Rong Ji DAI; Li Wen LIU; Mei Ling QI

    2004-01-01

    Heptakis(2,3,6-tri-O-octyl)-β-cyclodextrin was coated onto the fused silica capillary by sol-gel technology.Column efficiency and column selectivity were studied. The results indicated that high ability of separation was acquired. Positional isomers of aromatic compounds were well separated.

  20. Environmental Technology Verification Report for Abraxis Ecologenia® 17β-Estradiol (E2) Microplate Enzyme-Linked Immunosorbent Assay (ELISA) Test Kits

    Science.gov (United States)

    This verification test was conducted according to procedures specifiedin the Test/QA Planfor Verification of Enzyme-Linked Immunosorbent Assay (ELISA) Test Kis for the Quantitative Determination of Endocrine Disrupting Compounds (EDCs) in Aqueous Phase Samples. Deviations to the...

  1. A survey on the high reliability software verification and validation technology for instrumentation and control in NPP.

    Energy Technology Data Exchange (ETDEWEB)

    Kwon, Kee Choon; Lee, Chang Soo; Dong, In Sook [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1994-01-01

    This document presents the technical status of the software verification and validation (V and V) efforts to support developing and licensing digital instrumentation and control (I and C) systems in nuclear power plants. We have reviewed codes and standards to be concensus criteria among vendor, licensee and licenser. Then we have described the software licensing procedures under 10 CFR 50 and 10 CFR 52 of the United States cope with the licensing barrier. At last, we have surveyed the technical issues related to developing and licensing the high integrity software for digital I and C systems. These technical issues let us know the development direction of our own software V and V methodology. (Author) 13 refs., 2 figs.,.

  2. Formulating food protein-stabilized indomethacin nanosuspensions into pellets by fluid-bed coating technology: physical characterization, redispersibility, and dissolution

    Directory of Open Access Journals (Sweden)

    He W

    2013-08-01

    Full Text Available Wei He,1,2 Yi Lu,1 Jianping Qi,1 Lingyun Chen,3 Lifang Yin,2 Wei Wu1 1School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery of Ministry of Education and PLA, Shanghai, 2Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, People's Republic of China; 3Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, AB, Canada Background: Drug nanosuspensions are very promising for enhancing the dissolution and bioavailability of drugs that are poorly soluble in water. However, the poor stability of nanosuspensions, reflected in particle growth, aggregation/agglomeration, and change in crystallinity state greatly limits their applications. Solidification of nanosuspensions is an ideal strategy for addressing this problem. Hence, the present work aimed to convert drug nanosuspensions into pellets using fluid-bed coating technology. Methods: Indomethacin nanosuspensions were prepared by the precipitation-ultrasonication method using food proteins (soybean protein isolate, whey protein isolate, ß-lactoglobulin as stabilizers. Dried nanosuspensions were prepared by coating the nanosuspensions onto pellets. The redispersibility, drug dissolution, solid-state forms, and morphology of the dried nanosuspensions were evaluated. Results: The mean particle size for the nanosuspensions stabilized using soybean protein isolate, whey protein isolate, and β-lactoglobulin was 588 nm, 320 nm, and 243 nm, respectively. The nanosuspensions could be successfully layered onto pellets with high coating efficiency. Both the dried nanosuspensions and nanosuspensions in their original amorphous state and not influenced by the fluid-bed coating drying process could be redispersed in water, maintaining their original particle size and size distribution. Both the dried nanosuspensions and the original drug nanosuspensions showed similar dissolution profiles, which were both much

  3. Research on Using Natural Coating Materials on the Storage Life of Mango Fruit cv. Nam Dok Mai and Technology Dissemination

    Directory of Open Access Journals (Sweden)

    Apiradee MUANGDECH

    2016-03-01

    Full Text Available This study was designed to assess the suitable type and concentration of 3 natural coating materials, namely, Aloe vera gel, chitosan and carnaubar wax, on postharvest storage life of mango (Mangifera indica L. cv. Nam Dok Mai. The experiment was divided into 3 treatments to compare the 3 types of coating materials and each appropriate concentration, to find the appropriate combination treatment, and to evaluate the benefit of this technology. The objectives of this research were to compare different concentrations and study the type of natural coating materials. At 20 % Aloe vera jelly, 1 % chitosan and 4 % carnaubar wax gave the longest storage life with good quality at 12 days at a storage temperature of 25 °C and 75±5 % relative humidity (p ≤ 0.05. Further investigation was done by using these optimal concentrations alone or in combination under 2 different conditions, 25 °C with 75±5 % relative humidity and 13 °C with 90±5 % relative humidity. It was found that coating with combination of 20 % Aloe vera jelly and 1 % chitosan gave the best result in alleviating the formation of brown spot and extended the storage life up to 12 days as well as slowing down the weight loss, changes in peel and pulp color, firmness, texture, quality such as concentrate by titratable acidity, total soluble solids and respiratory rate significantly compared to control and other treatment (p ≤ 0.05. The use of the coating materials did not alter the quality of the fruit when ripe. Technology dissemination to farmers and exporters was performed by using the training manuals created by the author. The results of the pre-test and after training post-test showed that farmers and exporters increased their knowledge, attitudes, awareness and skills in the use of the natural coating materials for prolonging storage life of mangos.

  4. Wear resistance of thick diamond like carbon coatings against polymeric materials used in single screw plasticizing technology

    Science.gov (United States)

    Zitzenbacher, G.; Liu, K.; Forsich, C.; Heim, D.

    2015-05-01

    Wear on the screw and barrel surface accompany polymer single screw plasticizing technology from the beginning. In general, wear on screws can be reduced by using nitrided steel surfaces, fused armour alloys on the screw flights and coatings. However, DLC-coatings (Diamond Like Carbon) comprise a number of interesting properties such as a high hardness, a low coefficient of friction and an excellent corrosion resistance due to their amorphous structure. The wear resistance of about 50 µm thick DLC-coatings against polyamide 6.6, polybutylene terephthalate and polypropylene is investigated in this paper. The tribology in the solids conveying zone of a single screw extruder until the beginning of melting is evaluated using a pin on disc tribometer and a so called screw tribometer. The polymeric pins are pressed against coated metal samples using the pin on disc tribometer and the tests are carried out at a defined normal force and sliding velocity. The screw tribometer is used to perform tribological experiments between polymer pellets and rotating coated metal shafts simulating the extruder screw. Long term experiments were performed to evaluate the wear resistance of the DLC-coating. A reduction of the coefficient of friction can be observed after a frictional distance of about 20 kilometers using glass fibre reinforced polymeric materials. This reduction is independent on the polymer and accompanied by a black layer on the wear surface of the polymeric pins. The DLC-coated metal samples show an up to 16 µm deep wear track after the 100 kilometer test period against the glass fiber filled materials only.

  5. Aluminum and aluminum/silicon coatings on ferritic steels by CVD-FBR technology

    Energy Technology Data Exchange (ETDEWEB)

    Perez, F.J. [Grupo de Investigacion de Ingenieria de Superficies, Departamento de Ciencia de los Materiales, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, 28040 Madrid (Spain)]. E-mail: fjperez@quim.ucm.es; Hierro, M.P. [Grupo de Investigacion de Ingenieria de Superficies, Departamento de Ciencia de los Materiales, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, 28040 Madrid (Spain); Trilleros, J.A. [Grupo de Investigacion de Ingenieria de Superficies, Departamento de Ciencia de los Materiales, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, 28040 Madrid (Spain); Carpintero, M.C. [Grupo de Investigacion de Ingenieria de Superficies, Departamento de Ciencia de los Materiales, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, 28040 Madrid (Spain); Sanchez, L. [Grupo de Investigacion de Ingenieria de Superficies, Departamento de Ciencia de los Materiales, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, 28040 Madrid (Spain); Bolivar, F.J. [Grupo de Investigacion de Ingenieria de Superficies, Departamento de Ciencia de los Materiales, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, 28040 Madrid (Spain)

    2006-05-10

    The use of chemical vapor deposition by fluidized bed reactors (CVD-FBR) offers some advantages in comparison to other coating techniques such as pack cementation, because it allows coating deposition at lower temperatures than pack cementation and at atmospheric pressure without affecting the mechanical properties of material due to heat treatments of the bulk during coating process. Aluminum and aluminum/silicon coatings have been obtained on two different ferritics steels (P-91 and P-92). The coatings were analyzed using several techniques like SEM/EDX and XRD. The results indicated that both coatings were form by Fe{sub 2}Al{sub 5} intermetallic compound, and in the co-deposition the Si was incorporated to the Fe{sub 2}Al{sub 5} structure in small amounts.

  6. Technology, Preparation and Properties of the Cast Glass-Coated Magnetic Microwires

    Directory of Open Access Journals (Sweden)

    Serghei A. Baranov

    2017-05-01

    Full Text Available Magnetic properties of cast amorphous and nanocrystalline microwires have been reviewed considering their potential application. Microwires were produced from Co Fe Mn Cr Cu B and Si using the Taylor–Ulitovsky method. Technological aspects of the Taylor–Ulitovsky method for fabrication of glass-coated microwire with different structure are analyzed. Magnetic microwires demonstrate a large variety of magnetic behaviors, which is important for sensing applications. Depending on the chemical composition of the metallic core, for Co-, Fe- and Ni-based composition, the microwires’ properties are very different. The geometrical characteristics (diameter of metallic core and thickness of the glass of the microwire depend on the physical properties of a metallic composition and of glass and the parameters of the heating inductor and the speed of obtaining a microwire. The diameter of metallic core in these microwires can range from 0.5 to 70 μm, and their thickness of the glass can vary from 1 to 50 μm.

  7. High Sensitivity Refractometer Based on TiO₂-Coated Adiabatic Tapered Optical Fiber via ALD Technology.

    Science.gov (United States)

    Zhu, Shan; Pang, Fufei; Huang, Sujuan; Zou, Fang; Guo, Qiang; Wen, Jianxiang; Wang, Tingyun

    2016-08-15

    Atomic layer deposition (ALD) technology is introduced to fabricate a high sensitivity refractometer based on an adiabatic tapered optical fiber. Different thicknesses of titanium dioxide (TiO₂) nanofilm were coated around the tapered fiber precisely and uniformly under different deposition cycles. Attributed to the higher refractive index of the TiO₂ nanofilm compared to that of silica, an asymmetric Fabry-Perot (F-P) resonator could be constructed along the fiber taper. The central wavelength of the F-P resonator could be controlled by adjusting the thickness of the TiO₂ nanofilm. Such a F-P resonator is sensitive to changes in the surrounding refractive index (SRI), which is utilized to realize a high sensitivity refractometer. The refractometer developed by depositing 50.9-nm-thickness TiO₂ on the tapered fiber shows SRI sensitivity as high as 7096 nm/RIU in the SRI range of 1.3373-1.3500. Due to TiO₂'s advantages of high refractive index, lack of toxicity, and good biocompatibility, this refractometer is expected to have wide applications in the biochemical sensing field.

  8. Research status of dry coating technologies on solid dosage forms%固体制剂干法包衣工艺的研究进展

    Institute of Scientific and Technical Information of China (English)

    乔明曦; 李可欣; 陈大为

    2012-01-01

    Objective To review the recent progress of dry coating technologies on dosage forms. Methods The processes and principles of several dry coating methods included heat dry coating,electrostatic dry powder coating,plasticizer dry powder coating,and plasticizer electrostatic dry powder coating were discussed in the paper. Results The developed dry powder coating technologies are capable of eliminating the water in the coating process. Conclusions Dry coating technologies are promising to be applied in the pharmaceutical industrial manufacture.%目的 对近年来国内外固体制剂的非溶剂包衣工艺进行介绍.方法 通过查阅文献,综述了目前比较常用的几种包衣方式,包括静电干粉包衣、增塑剂干法包衣、增塑剂静电干粉包衣、热溶包衣、压制包衣和光固化包衣,以及各种包衣工艺的原理、过程与特点.结果 干法包衣工艺可以避免水性或有机溶剂的使用.结论 干法包衣工艺具有很大潜力,可用于固体制剂包衣的工业化生产.

  9. Film coated tablets (ColoPulse technology) for targeted delivery in the lower intestinal tract: influence of the core composition on release characteristics.

    Science.gov (United States)

    Schellekens, Reinout C A; Baltink, Jan H; Woesthuis, Ellen M; Stellaard, Frans; Kosterink, Jos G W; Woerdenbag, Herman J; Frijlink, Henderik W

    2012-01-01

    The design of a film coating technology which allows a tablet to deliver the drug in the ileocolonic segment would offer new treatment possibilities. The objective is to develop a platform technology that is suitable for a broad range of drug compounds. We developed a coated tablet with a delayed, pulsatile release profile based on a pH-sensitive coating technology (ColoPulse). The production process was validated, and the effect of core composition on the in vitro release and water uptake investigated. The release profile of the standard tablet core composition, based on the use of cellulose as a filler, was independent of the coat thickness in a range of 9.0-13.2 mg/cm(2). The release profile of a coated tablet was strongly influenced when cellulose was partly replaced by the model substance glucose (loss of sigmoidal release), citric acid (stabilization), sodium bicarbonate (destabilization) or sodium benzoate (destabilization). The film coating takes up water when below the pH-threshold. However, this did not cause early disintegration of the coating. The ColoPulse technology is successfully applied on tablets. The in vitro release characteristics of the coated tablets are influenced by the composition of the core.

  10. INFLUENCE OF TECHNOLOGICAL MODES OF MAGNETIC-ELECTRIC GRINDING ON MICROSTRUCTURE OF GAS-THERMAL SPRAYED NI–CR–B–SI-COATINGS

    Directory of Open Access Journals (Sweden)

    N. V. Spiridonov

    2009-01-01

    Full Text Available Influence of technological modes of magnetic-electric grinding on structural changes in a surface layer of gas-thermal sprayed coatings is investigated in the paper. The paper presents optimum modes of  coating roughing and finishing processes.

  11. TECHNOLOGY OF COATINGS ON THE BASE OF TITANIUM CARBIDE BY MEANS OF ELECTRO-SPARK PROCESSING OF THE DETAILS WITH SVS-REAGENTS

    Directory of Open Access Journals (Sweden)

    O. P. Reut

    2007-01-01

    Full Text Available The article is dedicated to the new economical technology of coatings on the base of titanium carbide by means of electro-spark processing of the details with SVS-reagents. The structures, phase and chemical compositions, micro-hardness, wear resistance of coatings are determined.

  12. Spin-Coating Technology of the Cover Layer for Digital Video Recording-Blue Disc

    Science.gov (United States)

    Komaki, Tsuyoshi; Hirata, Hideki; Usami, Mamoru; Ushida, Tomoki; Hayashida, Naoki; Inoue, Hiroyasu; Kato, Tatsuya; Shingai, Hiroshi; Utsunomiya, Hajime

    2002-06-01

    We have achieved the cover layer thickness distribution of 100± 1.5 μm on a disc by improving the spin-coating method and developing an original spin-coating machine. The small skew of the disc is achieved by using a newly developed UV-curable resin.

  13. Application of waterborne acrylic emulsions in coated controlled release fertilizer using reacted layer technology

    Institute of Scientific and Technical Information of China (English)

    Yazhen Shen; Cong Zhao; Jianmin Zhou; Changwen Du

    2015-01-01

    Waterborne acrylic emulsions modified with organic siloxanes and aziridine crosslinker were synthesized and applied as coating of controlled release fertilizer. The free films were characterized and the nutrient release pro-files of the coated fertilizers were determined. The results show that methyl silicone oil and methylsilanolate so-dium could not improve water resistance performance and glass transition temperature Tg of coatings, while the firmness is enhanced. Aziridine crosslinker improves the water resistance performance, firmness and Tg. Incorpo-ration of methyl silicone oil and aziridine crosslinker gives an excellent aqueous acrylic emulsion for coated con-trol ed release fertilizer, with the 30-day cumulative nutrient release reduced to 16%and an estimated nutrient release duration over 190 days. Therefore, this waterborne coating is promising to meet the requirements for controlled release of nutrient and environmental protection.

  14. 天然气计量检定技术现状及进展%Current Situation and Development of the Natural Gas Metrological Verification Technology

    Institute of Scientific and Technical Information of China (English)

    赵士海; 刘博韬

    2015-01-01

    With the continual increase of requirement of natural gas and global development of natural gas trade, the accuracy of natural gas flow rate measurement attracts more and more attention from the supply and demand sides. In this paper, the current technology situation and development trend of orifice-plate flowmeter, ultrasonic flowmeter and turbine flowmeter were reviewed. Development of the natural gas metrological verification technology used for measurement tracing at home and abroad was also analyzed.%随着天然气需求量的不断增加和天然气贸易的全球化发展,供求双方越来越重视天然气流量计量的准确性。重点论述了广泛应用于天然气流量计量的孔板流量计、超声流量计、涡轮流量计的技术现状和发展趋势,以及国内外用于流量计量值溯源的天然气计量检定站技术的进展情况。

  15. Advances in microreaction technology for portable fuel cell applications: Wall coating of thin catalytic films in microreactors

    Science.gov (United States)

    Bravo Bersano, Jaime Cristian

    This research has focused on the need to coat microreactor systems composed of channels in the micron size range of 100 to 1000 mum. The experimental procedures and learning are outlined in terms of slurry and surface preparation requirements which are detailed in the experimental section. This system is motivated and applied to micro methanol steam reformers. Thus, a detailed discussion on the driving motivation is given in the introduction. The low temperatures required for steam-reforming of methanol ˜ 493°K (220°C) make it possible to utilize the reformate as a feed to the fuel cell anode. The group of catalysts that shows the highest activity for methanol steam reforming (SR) at low temperature has composition of CuO/ZnO/Al 2O3, which is also the catalyst used for methanol synthesis. Steam reforming of methanol is a highly endothermic process. Conventional reactor configurations, such as a packed bed reactor, operate in a heat transfer limited mode for this reaction. Using catalyst in packed bed form for portable devices is also not convenient due to high pressure drop and possible channeling of gases in addition to poor heat transfer. A wall-coated catalyst represents a superior geometry since it provides lower pressure drop and ease of manufacturing. Due to their small size, microreactors are especially suited for endothermic reactions whose reactivity depends on the rate of heat input. A brief review on microreaction technology is given with a comprehensive survey for catalyst integration into microreactors for catalytic heterogeneous gas phase reactions. The strength of this research is the model that was developed to coat the interior of micron sized capillaries with coats of CuO/ZnO/Al2O 3 slurries as thick as 25 mum in the dry state. The details of the model are given in terms Taylor's theory and Rayleigh's theory. A model is presented that can predict the coat thickness based on experimental conditions The model combines Taylor's experimental work

  16. 汽车用水性涂料的特征及其涂装技术%The Characteristics of Waterborne Coatings for Automobile and Its Painting Technology

    Institute of Scientific and Technical Information of China (English)

    王锡春; 李文刚

    2012-01-01

    The significant of waterborne for coating process, the difficulties of waterborne coating caused by the characteristics of water, the key process condition of waterborne coating, the factors restricting the development of waterborne coatings and their status were introduced. Pointed out that we should vigorously develop waterborne coatings and coating technology%介绍了涂装工艺水性化的意义,水的特征给水性涂装带来的难点,水性涂装的关键工艺条件,制约水性涂料发展的因素及其现状。指出应大力发展水性涂料及其涂装技术。

  17. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT FOR THE UV DISINFECTION OF SECONDARY EFFLUENTS, SUNTEC, INC. MODEL LPX200 DISINFECTION SYSTEM - 03/09/WQPC-SWP

    Science.gov (United States)

    Verification testing of the SUNTEC LPX200 UV Disinfection System to develop the UV delivered dose flow relationship was conducted at the Parsippany-Troy Hills wastewater treatment plant test site in Parsippany, New Jersey. Two lamp modules were mounted parallel in a 6.5-meter lon...

  18. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT FOR THE REMOVAL OF MERCURY FROM DENTAL OFFICE WASTEWATER, DENTAL RECYCLING OF NORTH AMERICA (DRNA) MERCURY REMOVAL UNIT (MRU). - NSF 02/01/EPAWQPC-SWP

    Science.gov (United States)

    Verification testing of the Dental Recycling North America (DRNA) Mercury Removal Unit (MRU) was conducted over a seven week period, at a dental office in Michigan that had three operatory rooms and two hygiene rooms. The office operated four days per week and averaged approxiam...

  19. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT FOR THE REDUCTION OF NITROGEN IN DOMESTIC WASTEWATER FROM INDIVIDUAL RESIDENTIAL HOMES, WATERLOO BIOFILTER® MODEL 4-BEDROOM (NSF 02/03/WQPC-SWP)

    Science.gov (United States)

    Verification testing of the Waterloo Biofilter Systems (WBS), Inc. Waterloo Biofilter® Model 4-Bedroom system was conducted over a thirteen month period at the Massachusetts Alternative Septic System Test Center (MASSTC) located at Otis Air National Guard Base in Bourne, Mas...

  20. Swarm Verification

    Science.gov (United States)

    Holzmann, Gerard J.; Joshi, Rajeev; Groce, Alex

    2008-01-01

    Reportedly, supercomputer designer Seymour Cray once said that he would sooner use two strong oxen to plow a field than a thousand chickens. Although this is undoubtedly wise when it comes to plowing a field, it is not so clear for other types of tasks. Model checking problems are of the proverbial "search the needle in a haystack" type. Such problems can often be parallelized easily. Alas, none of the usual divide and conquer methods can be used to parallelize the working of a model checker. Given that it has become easier than ever to gain access to large numbers of computers to perform even routine tasks it is becoming more and more attractive to find alternate ways to use these resources to speed up model checking tasks. This paper describes one such method, called swarm verification.

  1. The development of verification and validation technology for instrumentation and control in NPPs - A study on the software development methodology of a highly reliable software

    Energy Technology Data Exchange (ETDEWEB)

    Kwon, Yong Rae; Cha, Sung Deok; Lee, Woo Jin; Chae, Hong Seok; Yoon, Kwang Sik; Jeong, Ki Suk [Korea Advanced Institute of Science and Technology,= Taejon (Korea, Republic of)

    1996-07-01

    Nuclear industries have tried to use the digital I and C technology in developing advanced nuclear power plants. However, because the industries did= not establish the highly reliable software development methodologies and standards applied to developing the highly reliable and safe software for digital I and C systems, they were confronted with the difficulties to avoid software common mode failures. To mitigate the difficulties, the highly reliable software development environments and methodologies and validation and verification techniques should be the cornerstone of all digital implementation in nuclear power plants. The objectives of this project is to establish the highly reliable software development methodology to support developing digital instrumentation and control systems in nuclear power plants. In this project, we have investigated the business-oriented and the real-time software development methods and techniques for ensuring safety and reliability of the software. Also we have studied standards related to licensing the software for digital I and C systems. 50 refs., 51 figs. (author)

  2. Effectiveness of a pressurized stormwater filtration system in Green Bay, Wisconsin: a study for the environmental technology verification program of the U.S. Environmental Protection Agency

    Science.gov (United States)

    Horwatich, J.A.; Corsi, Steven R.; Bannerman, Roger T.

    2004-01-01

    A pressurized stormwater filtration system was installed in 1998 as a stormwater-treatment practice to treat runoff from a hospital rooftop and parking lot in Green Bay, Wisconsin. This type of filtration system has been installed in Florida citrus groves and sewage treatment plants around the United States; however, this installation is the first of its kind to be used to treat urban runoff and the first to be tested in Wisconsin. The U.S. Geological Survey (USGS) monitored the system between November 2000 and September 2002 to evaluate it as part of the U.S. Environmental Protection Agency's Environmental Technology Verification Program. Fifteen runoff events were monitored for flow and water quality at the inlet and outlet of the system, and comparison of the event mean concentrations and constituent loads was used to evaluate its effectiveness. Loads were decreased in all particulate-associated constituents monitored, including suspended solids (83 percent), suspended sediment (81 percent), total Kjeldahl nitrogen (26 percent), total phosphorus (54 percent), and total recoverable zinc (62 percent). Total dissolved solids, dissolved phosphorus, and nitrate plus nitrite loads remained similar or increased through the system. The increase in some constituents was most likely due to a ground-water contribution between runoff events. Sand/silt split analysis resulted in the median silt content of 78 percent at the inlet, 87 percent at the outlet, and 3 percent at the flow splitter.

  3. Data Exchanges and Verifications Online (DEVO)

    Data.gov (United States)

    Social Security Administration — DEVO is the back-end application for processing SSN verifications and data exchanges. DEVO uses modern technology for parameter driven processing of both batch and...

  4. Process Document, Joint Verification Protocol, and Joint Test Plan for Verification of HACH-LANGE GmbH LUMIStox 300 Bench Top Luminometer and ECLOX Handheld Luminometer for Luminescent Bacteria Test for use in Wastewater

    Science.gov (United States)

    The Danish Environmental Technology Verification program (DANETV) Water Test Centre operated by DHI, is supported by the Danish Ministry for Science, Technology and Innovation. DANETV, the United States Environmental Protection Agency Environmental Technology Verification Progra...

  5. Plasma Assisted Chemical Vapour Deposition – Technological Design Of Functional Coatings

    Directory of Open Access Journals (Sweden)

    Januś M.

    2015-06-01

    Full Text Available Plasma Assisted Chemical Vapour Deposition (PA CVD method allows to deposit of homogeneous, well-adhesive coatings at lower temperature on different substrates. Plasmochemical treatment significantly impacts on physicochemical parameters of modified surfaces. In this study we present the overview of the possibilities of plasma processes for the deposition of diamond-like carbon coatings doped Si and/or N atoms on the Ti Grade2, aluminum-zinc alloy and polyetherketone substrate. Depending on the type of modified substrate had improved the corrosion properties including biocompatibility of titanium surface, increase of surface hardness with deposition of good adhesion and fine-grained coatings (in the case of Al-Zn alloy and improving of the wear resistance (in the case of PEEK substrate.

  6. Some recent trends in research and technology of advanced thermal barrier coatings

    Energy Technology Data Exchange (ETDEWEB)

    Schulz, U.; Leyens, Ch.; Fritscher, K.; Peters, M.; Saruhan-Brings, B. [Deutsches Zentrum fur Luft- und Raumfahrt, DLR, Institute of Mateirals Research, Koln (Germany); Lavigne, O.; Dorvaux, J.M.; Poulain, M.; Mevrel, R.; Caliez, M. [Office National d' Etudes et de Recherches Aerospatiales (ONERA), Dept. of Metallic Materials and Processing, 92 - Chatillon (France)

    2003-01-01

    Ceramic thermal barrier coatings (TBCs) offer the potential to significantly improve efficiencies of aero engines as well as stationary gas turbines for power generation. On internally cooled turbine parts temperature gradients of the order of 100 to 150 deg. C can be achieved. Today, state-of-the-art TBCs, typically consisting of an yttria-stabilised zirconia top coat and a metallic bond coat deposited onto a superalloy substrate, are mainly used to extend lifetime. Further efficiency improvements require TBCs being an integral part of the component which, in turn, requires reliable and predictable TBC performance. Presently, TBCs produced by electron beam physical vapour deposition are favoured for high performance applications. The paper highlights critical R and D needs for advanced TBC systems with a special focus on reduced thermal conductivity and life prediction needs. (authors)

  7. Experience and perspectives of application of gasdynamic coatings in space technology

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ The given work deals with the results of the research carried out by the "Salute" DB of the Khrunichev State research-and-production space center concerning the development of special equipment and improvement of the technique of the "cold" gasdynamic method of application of coating for the accomplishment of several specific tasks: (1) development of the technique of application of a fireproof heat-radiating coating to screens made from stainless steel with coefficient of thermal radiation ε≥0.7; (2) development of technique of sealing ("curing") of microleaks on the weld joints of the propellant tanks made of aluminum alloys; (3) study of the opportunity of sealing of joints of parts made from heterogeneous materials; (4) development of process for copper and nickel coating application for aluminium heat exchangers soldering.

  8. Experience and perspectives of application of gasdynamic coatings in space technology

    Institute of Scientific and Technical Information of China (English)

    Bakhvalov; Yu.; O.; Polovtsev; V.; A.; Mikheev; V.; I.

    2005-01-01

    The given work deals with the results of the research carried out by the "Salute" DB of the Khrunichev State research-and-production space center concerning the development of special equipment and improvement of the technique of the "cold" gasdynamic method of application of coating for the accomplishment of several specific tasks: (1) development of the technique of application of a fireproof heat-radiating coating to screens made from stainless steel with coefficient of thermal radiation ε≥0.7; (2) development of technique of sealing ("curing") of microleaks on the weld joints of the propellant tanks made of aluminum alloys; (3) study of the opportunity of sealing of joints of parts made from heterogeneous materials; (4) development of process for copper and nickel coating application for aluminium heat exchangers soldering.……

  9. Development of a Wearable Instrumented Vest for Posture Monitoring and System Usability Verification Based on the Technology Acceptance Model.

    Science.gov (United States)

    Lin, Wen-Yen; Chou, Wen-Cheng; Tsai, Tsai-Hsuan; Lin, Chung-Chih; Lee, Ming-Yih

    2016-12-17

    Body posture and activity are important indices for assessing health and quality of life, especially for elderly people. Therefore, an easily wearable device or instrumented garment would be valuable for monitoring elderly people's postures and activities to facilitate healthy aging. In particular, such devices should be accepted by elderly people so that they are willing to wear it all the time. This paper presents the design and development of a novel, textile-based, intelligent wearable vest for real-time posture monitoring and emergency warnings. The vest provides a highly portable and low-cost solution that can be used both indoors and outdoors in order to provide long-term care at home, including health promotion, healthy aging assessments, and health abnormality alerts. The usability of the system was verified using a technology acceptance model-based study of 50 elderly people. The results indicated that although elderly people are anxious about some newly developed wearable technologies, they look forward to wearing this instrumented posture-monitoring vest in the future.

  10. Advanced Coating Technology for Enhanced Performance of Microchannel Plates for UV Detectors Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In this NASA SBIR Phase I proposal we propose to apply a highly conformal coating of ZnO and AlN or a double layer of GaN to the surface and internal pore walls of...

  11. Pipeline walls hydrophobic properties study and their protective coatings used in trenchless technologies

    National Research Council Canada - National Science Library

    Orlov, Vladimir

    2016-01-01

    ... miniflow is reached on an inclined surface in the form of an open trough was studied. The geometric parameters of the frontal and coaxial miniflow projections were determined, its dimensions and hydraulic characteristics were studied. The trial stand design for the protective coatings hydrophobic properties study was presented and described and method of eval...

  12. Environmental Technology Verification Report for Abraxis Ecologenia® Ethynylestradiol (EE2) Microplate Enzyme-Linked Immunosorbent Assay (ELISA) Test Kits

    Science.gov (United States)

    The EPA's National Risk Management Research Laboratory (NRMRL) and its verification organization partner, Battelle, operate the Advanced Monitoring Systems (AMS) Center under ETV. The AMS Center recently evaluated the performance of the Abraxis Ecologenia Ethynylestradiol (EE2) ...

  13. Environmental Technology Verification Report for Abraxis Ecologenia® Ethynylestradiol (EE2) Microplate Enzyme-Linked Immunosorbent Assay (ELISA) Test Kits

    Science.gov (United States)

    The EPA's National Risk Management Research Laboratory (NRMRL) and its verification organization partner, Battelle, operate the Advanced Monitoring Systems (AMS) Center under ETV. The AMS Center recently evaluated the performance of the Abraxis Ecologenia Ethynylestradiol (EE2) ...

  14. Environmental Technology Verification Test Report of Mobile Source Selective Catalytic Reduction, Johnson Matthey SCCRT, Version 1, Selective Catalytic Reduction Technology with a Catalyzed Continuously Regenerating Trap

    Science.gov (United States)

    The Johnson Matthey SCCRT, v.1 technology is a urea-based SCR system combined with a CCRT filter designed for on-highway light, medium, and heavy heavy-duty diesel, urban and non-urban, bus exhaust gas recirculation (EGR)-or non-EGR-equipped engines for use with commercial ultra-...

  15. Possibilities of the Technology of Additive Production for Making Complex-Shape Parts and Depositing Functional Coatings from Metallic Powders

    Science.gov (United States)

    Grigor'ev, S. N.; Tarasova, T. V.

    2016-01-01

    The aspects of terminology, definitions and classification in the technology of additive production are considered. The principal possibility of fabrication of complex-shape parts from a refractory cobalt alloy by the method of selective laser melting and deposition of hard and wear-resistant coatings from Ti and SiC powders by coaxial laser surfacing is shown. The technological possibility of microlaser surfacing with lateral resolution about 100 μm in the production of parts from aluminum alloys is considered. The mechanisms of formation of structure in the studied alloys typical for selective laser melting, laser surfacing and microlaser surfacing are determined. The physical and mechanical properties of the alloys are investigated.

  16. Theoretical Analysis and Experimental Study on the Coating Removal from Passenger-Vehicle Plastics for Recycling by Using Water Jet Technology

    Science.gov (United States)

    Zhang, Hongshen; Chen, Ming

    2015-11-01

    The recovery and utilization of automotive plastics are a global concern because of the increasing number of end-of-life vehicles. In-depth studies on technologies for the removal of coatings from automotive plastics can contribute to the high value-added levels of the recycling and utilization of automotive plastic. The liquid waste generated by removing chemical paint by using traditional methods is difficult to handle and readily produces secondary pollution. Therefore, new, clean, and highly efficient techniques of paint removal must be developed. In this article, a method of coating removal from passenger-vehicle plastics was generated based on high-pressure water jet technology to facilitate the recycling of these plastics. The established technology was theoretically analyzed, numerically simulated, and experimentally studied. The high-pressure water jet equipment for the removal of automotive-plastic coatings was constructed through research and testing, and the detailed experiments on coating removal rate were performed by using this equipment. The results showed that high-pressure water jet technology can effectively remove coatings on the surfaces of passenger-vehicle plastics. The research also revealed that the coating removal rate increased as jet pressure ( P) increased and then decreased when jet moving speed ( Vn) increased. The rate decreased as the distance from nozzle to work piece ( S nw ) and the nozzle angle ( Φ) increased. The mathematical model for the rate of removal of coatings from bumper surfaces by water jet was derived based on the experiment data and can effectively predict coating removal rate under different operating conditions.

  17. Based on the Research of the Innovative Technologies of the Automatic Verification Assembly Line for Smart Electricity Meter%智能电能表自动化检定流水线新技术研究

    Institute of Scientific and Technical Information of China (English)

    蔡文嘉; 刘莉; 李莉; 石洪

    2014-01-01

    The paper point at paper turnover box used in the innovative technologies Of The Automatic Verification Assembly Line, and LCD display unit of the smart electricity meterelectric meter crystal cycle significant demand of the standard test requirements, the paper container automatic palletizing, electric energy meterliquid crystal based research and design of explicit detection technology innovation, optimize, improve the function of the system, play a greater measure of automatic verification line modular, automation, intelligent, liftingtest quality, improve the efficiency of the verification.%本文针对智能电能表自动化检定流水线采用纸质周转箱作为电能表基本存储单元,智能电能表液晶循显检测等现场需求与国网标准要求,提出纸质空箱自动码垛、电能表液晶循显检测等创新技术的研究与设计,通过优化、完善系统功能,更大限度发挥自动化检定流水线模块化、自动化、智能化的特点,提升检定质量,提高检定效率。

  18. Membrane-Based Technologies in the Pharmaceutical Industry and Continuous Production of Polymer-Coated Crystals/Particles.

    Science.gov (United States)

    Chen, Dengyue; Sirkar, Kamalesh K; Jin, Chi; Singh, Dhananjay; Pfeffer, Robert

    2017-01-01

    Membrane technologies are of increasing importance in a variety of separation and purification applications involving liquid phases and gaseous mixtures. Although the most widely used applications at this time are in water treatment including desalination, there are many applications in chemical, food, healthcare, paper and petrochemical industries. This brief review is concerned with existing and emerging applications of various membrane technologies in the pharmaceutical and biopharmaceutical industry. The goal of this review article is to identify important membrane processes and techniques which are being used or proposed to be used in the pharmaceutical and biopharmaceutical operations. How novel membrane processes can be useful for delivery of crystalline/particulate drugs is also of interest. Membrane separation technologies are extensively used in downstream processes for bio-pharmaceutical separation and purification operations via microfiltration, ultrafiltration and diafiltration. Also the new technique of membrane chromatography allows efficient purification of monoclonal antibodies. Membrane filtration techniques of reverse osmosis and nanofiltration are being combined with bioreactors and advanced oxidation processes to treat wastewaters from pharmaceutical plants. Nanofiltration with organic solvent-stable membranes can implement solvent exchange and catalyst recovery during organic solvent-based drug synthesis of pharmaceutical compounds/intermediates. Membranes in the form of hollow fibers can be conveniently used to implement crystallization of pharmaceutical compounds. The novel crystallization methods of solid hollow fiber cooling crystallizer (SHFCC) and porous hollow fiber anti-solvent crystallization (PHFAC) are being developed to provide efficient methods for continuous production of polymer-coated drug crystals in the area of drug delivery. This brief review provides a general introduction to various applications of membrane technologies in

  19. EVALUATION OF SUPERCRITICAL CARBON DIOXIDE TECHNOLOGY TO REDUCE SOLVENT IN SPRAY COATING APPLICATIONS

    Science.gov (United States)

    This evaluation, part of the Pollution Prevention Clean Technology Demonstration (CTD) Program, addresses the product quality, waste reduction, and economic issues of spray paint application using supercritical carbon dioxide (CO2). Anion Carbide has developed this technology and...

  20. EVALUATION OF SUPERCRITICAL CARBON DIOXIDE TECHNOLOGY TO REDUCE SOLVENT IN SPRAY COATING APPLICATIONS

    Science.gov (United States)

    This evaluation, part of the Pollution Prevention Clean Technology Demonstration (CTD) Program, addresses the product quality, waste reduction, and economic issues of spray paint application using supercritical carbon dioxide (CO2). Anion Carbide has developed this technology and...

  1. Microstructure and wear resistance of Ti-Cu-N composite coating prepared via laser cladding/laser nitriding technology on Ti-6Al-4V alloy

    Science.gov (United States)

    Yang, Yuling; Cao, Shiyin; Zhang, Shuai; Xu, Chuan; Qin, Gaowu

    2017-07-01

    Ti-Cu-N coatings with three different Cu contents on Ti-6Al-4V alloy (TC4) were obtained via laser cladding together with laser nitriding (LC/LN) technology. Phase constituents, microstructure, microhardness, and wear resistance of the coatings were investigated. The evolution of the coefficients of friction for the three coatings was measured under dry sliding conditions as a function of the revolutions until the coating failure. The results show that the coatings are mainly composed of TiN, CuTi3 and some TiO6 phases dispersed in the matrix. A good metallurgical bonding between the coating and substrate has been successfully obtained. The prepared Ti-Cu-N composite coatings almost doubly enhance the microhardness of the TC4 alloy and reduce the friction down to 1/4-1/2 of the TC4 alloy, and thus significantly improve the wear resistance. The coefficient of friction depends on the Cu content in the coating.

  2. Development of High Rate Coating Technology for Low Cost Electrochromic Dynamic Windows

    Energy Technology Data Exchange (ETDEWEB)

    Kwak, B.; Joshi, Ajey

    2013-03-31

    Objectives of the Project: The objective of this project was to develop and demonstrate the feasibility of depositing critical electrochromic layers at high rate using new novel vacuum coating sources, to develop a full electrochromic process flow by combining conventional processes with new deposition sources, to characterize, test, evaluate, and optimize the resulting coatings and devices, and, to demonstrate an electrochromic device using the new process flow and sources. As addendum objectives, this project was to develop and demonstrate direct patterning methods with novel integration schemes. The long term objective, beyond this program, is to integrate these innovations to enable production of low-cost, high-performance electrochromic windows produced on highly reliable and high yielding manufacturing equipment and systems.

  3. Materials and Coatings for Extreme Performances: Investigations, Applications, Ecologically Safe Technologies for Their Production and Utilization

    Science.gov (United States)

    2004-11-16

    In conditions of impact of high temperature oxidizing medium, plasma coatings based on refractory oxides of zirconium , hafnium as well as their...and time of contact are increase. Zirconium is very chemically active element. That is why it reduces almost all oxides . Due to difference...work deals with processes of production of nanosized molybdenum carbide powders by reducing oxides both in the presence of solid carbon and in

  4. Qualification of Coatings for Launch Facilities and Ground Support Equipment Through the NASA Corrosion Technology Laboratory

    Science.gov (United States)

    Kolody, Mark R.; Curran, Jerome P.; Calle, Luz Marina

    2014-01-01

    Corrosion protection at NASA's Kennedy Space Center is a high priority item. The launch facilities at the Kennedy Space Center are located approximately 1000 feet from the Atlantic Ocean where they are exposed to salt deposits, high humidity, high UV degradation, and acidic exhaust from solid rocket boosters. These assets are constructed from carbon steel, which requires a suitable coating to provide long-term protection to reduce corrosion and its associated costs.

  5. Recent progress in optical coating technology: low-voltage ion plating deposition

    Science.gov (United States)

    Guenther, Karl H.

    1990-08-01

    After fairly extensive discussions of the advantages and disadvantages of low energy and high energy ion beam bombardment of a growing film, we review briefly a number of experimental results obtained with various samples made with low voltage reactive ion plating deposition. The availability of a state-of-the-art high vacuum coating machine specifically equipped for this process is the foundation for a major leap toward achieving near-perfect optical coatings. The high density of ion plated thin films makes them impermeable to water vapor and corrosive solutions. This has been demonstrated with protected aluminum mirrors, polarizers, and infrared anti-reflection coatings. An indication of the high packing density is the substantially higher refractive index than that of comparable layers deposited with either conventional electron beam evaporation or ion assisted deposition. The spectral transmittance of multilayer stacks of oxide thin films is lower than expected from theoretical predictions which assume absorption-free dielectrics. The observed absorption is primarily of an interface nature rather than a volume effect and occurs predominantly in combinations of Ti02 and Si02 thin films.

  6. Plasma technology for creation of protective and decorative coatings for building materials

    Science.gov (United States)

    Volokitin, Oleg; Volokitin, Gennady; Skripnikova, Nelli; Shekhovtsov, Valentin

    2016-01-01

    An experimental setup is developed to create a protective and decorative coating on the surface of building materials. Experimental study is conducted to create a protective coating using low-temperature plasma. The properties of the surface before and after the plasma treatment are investigated. At the increase of the plasma generator power (56-75 kW) the rate of the vitreous coating formation is significantly reduced, and the destruction of hydrous calcium silicates occurs at a lower depth (0.5-2.0 mm). In this case, the adhesive strength increases up to 2.34 MPa. At the increase of the exposure time at 56 kW (0.045 m/s melting rate) plasma generation power, the melt formation is observed not only at the surface but at depth of 0.7 mm and deeper. Also, a deep degradation of the material occurs and the adhesive strength decreases. The optimal heat flux density of plasma generator was established at 1.8-2.6 . 106 W/m2, which allows the achievement of the uniform layer formation on the wood surface that preserves its natural pattern visible.

  7. Potential of direct metal deposition technology for manufacturing thick functionally graded coatings and parts for reactors components

    Science.gov (United States)

    Thivillon, L.; Bertrand, Ph.; Laget, B.; Smurov, I.

    2009-03-01

    Direct metal deposition (DMD) is an automated 3D deposition process arising from laser cladding technology with co-axial powder injection to refine or refurbish parts. Recently DMD has been extended to manufacture large-size near-net-shape components. When applied for manufacturing new parts (or their refinement), DMD can provide tailored thermal properties, high corrosion resistance, tailored tribology, multifunctional performance and cost savings due to smart material combinations. In repair (refurbishment) operations, DMD can be applied for parts with a wide variety of geometries and sizes. In contrast to the current tool repair techniques such as tungsten inert gas (TIG), metal inert gas (MIG) and plasma welding, laser cladding technology by DMD offers a well-controlled heat-treated zone due to the high energy density of the laser beam. In addition, this technology may be used for preventative maintenance and design changes/up-grading. One of the advantages of DMD is the possibility to build functionally graded coatings (from 1 mm thickness and higher) and 3D multi-material objects (for example, 100 mm-sized monolithic rectangular) in a single-step manufacturing cycle by using up to 4-channel powder feeder. Approved materials are: Fe (including stainless steel), Ni and Co alloys, (Cu,Ni 10%), WC compounds, TiC compounds. The developed coatings/parts are characterized by low porosity (<1%), fine microstructure, and their microhardness is close to the benchmark value of wrought alloys after thermal treatment (Co-based alloy Stellite, Inox 316L, stainless steel 17-4PH). The intended applications concern cooling elements with complex geometry, friction joints under high temperature and load, light-weight mechanical support structures, hermetic joints, tubes with complex geometry, and tailored inside and outside surface properties, etc.

  8. Coating of pumps; coating af pumper

    Energy Technology Data Exchange (ETDEWEB)

    Andersen, Hans; Moritzen, J.; Thoegersen, Jeanette

    2005-11-15

    Coating of pumps is a quite new activity. For many years pipes and containers have been coated inside in order to avoid corrosion, but the technology has only been used inside pumps for the last ten years. The technology comes from USA and is originally developed in the space technology industry as an exceptionally durable and corrosion constant coating. The project is a further development of results found in a previous R and D project in which measurements were performed before and after coating two different installations. Both installations showed large efficiency improvements. This project supplements the theory behind losses in pumps with measurements on more pumps. (BA)

  9. Improved microwave shielding behavior of carbon nanotube-coated PET fabric using plasma technology

    Energy Technology Data Exchange (ETDEWEB)

    Haji, Aminoddin, E-mail: Ahaji@iaubir.ac.ir [Department of Textile Engineering, Birjand Branch, Islamic Azad University, Birjand (Iran, Islamic Republic of); Semnani Rahbar, Ruhollah [Department of Textile and Leather, Faculty of Chemistry and Petrochemical Engineering, Standard Research Institute, Karaj (Iran, Islamic Republic of); Mousavi Shoushtari, Ahmad [Textile Engineering Department, Amirkabir University of Technology, Tehran (Iran, Islamic Republic of)

    2014-08-30

    Four different procedures were conducted to load amine functionalized multiwall carbon nanotube (NH{sub 2}-MWCNT) onto poly (ethylene terephthalate) (PET) fabric surface to obtain a microwave shielding sample. Plasma treated fabric which was subsequently coated with NH{sub 2}-MWCNT in the presence of acrylic acid was chosen as the best sample. Surface changes in the PET fabrics were investigated by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Wide-angle X-ray diffraction was used to study the crystalline structure of the PET fabric. The microwave shielding performance of the PET fabrics in term of reflection loss was determined using a network analyzer at X-band (8.2–12.4 GHz). The XPS results revealed that the carbon atomic percentage decreased while the oxygen atomic percentage increased when the fabric was plasma treated and coated with NH{sub 2}-MWCNT. The SEM images showed that the NH{sub 2}-MWCNTs were homogenously dispersed and individually separated in the surface of fabric. Moreover, the structural studies showed that the crystalline region of the fabrics was not affected by NH{sub 2}-MWCNT and plasma treatment. The best microwave absorbing properties were obtained from the plasma treated fabric which was then coated with 10% NH{sub 2}-MWCNT in the presence of acrylic acid. It showed a minimum reflection loss of ∼−18.2 dB about 11 GHz. Proper attachments of NH{sub 2}-MWCNT on the PET fabric surface was explained in the suggested mechanism in which hydrogen bonding and amide linkage are responsible for the achievement of microwave shielding properties with high durability.

  10. Improved microwave shielding behavior of carbon nanotube-coated PET fabric using plasma technology

    Science.gov (United States)

    Haji, Aminoddin; Semnani Rahbar, Ruhollah; Mousavi Shoushtari, Ahmad

    2014-08-01

    Four different procedures were conducted to load amine functionalized multiwall carbon nanotube (NH2-MWCNT) onto poly (ethylene terephthalate) (PET) fabric surface to obtain a microwave shielding sample. Plasma treated fabric which was subsequently coated with NH2-MWCNT in the presence of acrylic acid was chosen as the best sample. Surface changes in the PET fabrics were investigated by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Wide-angle X-ray diffraction was used to study the crystalline structure of the PET fabric. The microwave shielding performance of the PET fabrics in term of reflection loss was determined using a network analyzer at X-band (8.2-12.4 GHz). The XPS results revealed that the carbon atomic percentage decreased while the oxygen atomic percentage increased when the fabric was plasma treated and coated with NH2-MWCNT. The SEM images showed that the NH2-MWCNTs were homogenously dispersed and individually separated in the surface of fabric. Moreover, the structural studies showed that the crystalline region of the fabrics was not affected by NH2-MWCNT and plasma treatment. The best microwave absorbing properties were obtained from the plasma treated fabric which was then coated with 10% NH2-MWCNT in the presence of acrylic acid. It showed a minimum reflection loss of ∼-18.2 dB about 11 GHz. Proper attachments of NH2-MWCNT on the PET fabric surface was explained in the suggested mechanism in which hydrogen bonding and amide linkage are responsible for the achievement of microwave shielding properties with high durability.

  11. Study of Technology of Stripping Nickel Coating on NdFeB Permanent Magnet

    Institute of Scientific and Technical Information of China (English)

    Rao Houzeng; Li Guohua; Jiang Longfa; Lin Guanjie

    2004-01-01

    The influences of category and density of reagents, temperature and the value of pH in the solution of stripping the nickel coating on NdFeB permanent magnet on the stripping result were studied systematically.The practical formular contains mainly the oxidant m-O2NC6H4SO3Na, the complex reagent ( NaOOCCH2 ) 2N( CH2 ) 2N( CH2COOH)2,the reagent of retarding corrosion KF and the calatyze RL-3 was obtained.

  12. Joint DoD Demonstration And Validation Of Magnesium-Rich Primer Coating Technology

    Science.gov (United States)

    2012-01-01

    Anodized Preparation (per MIL-A-8625, Type IC) NAWC-AD Procedure: Panels were placed in titanium racks and immersed in Turco 4215 NCLT cleaner at...120 °F for 5 minutes. They were rinsed twice with hot tap water and then immersed in Turco SmutGo NC deoxidizer at ambient temperature for 60...Conversion Coating (CCC) Preparation (per MIL-PRF-81706, Type I) NAWC-AD Procedure: Panels were placed in titanium racks and immersed in Turco 4215 NCLT

  13. Progress in Long Life Thermal Barrier Coatings Technologies%长寿命热障涂层技术研究进展

    Institute of Scientific and Technical Information of China (English)

    王世兴; 刘新基; 汪瑞军

    2012-01-01

    随着高性能航空发动机对长寿命热障涂层需求的增加,提高热障涂层寿命已成为研究重点。本文从粘结层成分及结构设计和陶瓷层制备技术方面介绍了长寿命热障涂层研究进展,最后展望了未来低成本、长寿命热障涂层制备技术的研究方向及研究重点。%With high performance gas turbine engine increased demand for long life thermal barrier coatings, the research interest was focused on improvement thermal barrier coatings life. In this paper, the development and research statues of bond coat composition,structure design and top coat deposition technology for long life thermal barrier coatings was introduced. The research direction and focus of long life thermal barrier coatings deposited by low cost technologies was also anticipated.

  14. An Assembler Driven Verification Methodology (ADVM)

    CERN Document Server

    Macbeth, John S; Gray, Ken

    2011-01-01

    This paper presents an overview of an assembler driven verification methodology (ADVM) that was created and implemented for a chip card project at Infineon Technologies AG. The primary advantage of this methodology is that it enables rapid porting of directed tests to new targets and derivatives, with only a minimum amount of code refactoring. As a consequence, considerable verification development time and effort was saved.

  15. Advanced Multifunctional Coating

    Science.gov (United States)

    2011-08-17

    and UV durability of then current chrome free TT-P-2756 SPTC • Leverage APC technology into SPTC • Coating uses same fluoropolyurethane technology...as APC currently used on C-17 • Leverage recent advances in chrome free corrosion inhibitor technology • State of the art chrome free corrosion...coat exposed metal Aluminum Base Metal Original Finish System Aged APC Topcoat Conversion Coat Chromic Acid Anodize Aluminum Cladding Original Primer

  16. Utterance Verification for Text-Dependent Speaker Recognition

    DEFF Research Database (Denmark)

    Kinnunen, Tomi; Sahidullah, Md; Kukanov, Ivan

    2016-01-01

    Text-dependent automatic speaker verification naturally calls for the simultaneous verification of speaker identity and spoken content. These two tasks can be achieved with automatic speaker verification (ASV) and utterance verification (UV) technologies. While both have been addressed previously...... in the literature, a treatment of simultaneous speaker and utterance verification with a modern, standard database is so far lacking. This is despite the burgeoning demand for voice biometrics in a plethora of practical security applications. With the goal of improving overall verification performance, this paper...... reports different strategies for simultaneous ASV and UV in the context of short-duration, text-dependent speaker verification. Experiments performed on the recently released RedDots corpus are reported for three different ASV systems and four different UV systems. Results show that the combination...

  17. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, REMOVAL OF ARSENIC IN DRINKING WATER: WATTS PREMIER M-SERIES M-15,000 REVERSE OSMOSIS TREATMENT SYSTEM

    Science.gov (United States)

    Verification testing of the Watts Premier M-Series M-15,000 RO Treatment System was conducted over a 31-day period from April 26, 2004, through May 26, 2004. This test was conducted at the Coachella Valley Water District (CVWD) Well 7802 in Thermal, California. The source water...

  18. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, REMOVAL OF ARSENIC IN DRINKING WATER: WATTS PREMIER M-SERIES M-15,000 REVERSE OSMOSIS TREATMENT SYSTEM

    Science.gov (United States)

    Verification testing of the Watts Premier M-Series M-15,000 RO Treatment System was conducted over a 31-day period from April 26, 2004, through May 26, 2004. This test was conducted at the Coachella Valley Water District (CVWD) Well 7802 in Thermal, California. The source water...

  19. Environmental Technology Verification Report for Abraxis 17β-Estradiol (E2) Magnetic Particle Enzyme-Linked Immunosorbent Assay (ELISA) Test Kits

    Science.gov (United States)

    The EPA's National Risk Management Research Laboratory (NRMRL) and its verification organization partner, Battelle, operate the Advanced Monitoring Systems (AMS) Center under ETV. The AMS Center recently evaluated the performance of the Abraxis 17(beta)-estradiol (E2) magnetic p...

  20. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT - PHYSICAL REMOVAL OF MICROBIOLOGICAL & PARTICULATE CONTAMINANTS IN DRINKING WATER: US FILTER 3M10C MICROFILTRATION MEMBRANE SYSTEM AT CHULA VISTA, CALIFORNIA

    Science.gov (United States)

    Verification testing of the US Filter 3M10C membrane system was conducted over a 44-day test period at the Aqua 2000 Research Center in Chula Vista, California. The test period extended from July 24, 2002 to September 5, 2002. The source water was a blend of Colorado River and ...

  1. 基于覆盖率驱动的SoC验证技术研究%Research of SoC Verification Technology Based on Coverage--Driven

    Institute of Scientific and Technical Information of China (English)

    朱车壮; 陈岚; 冯燕

    2011-01-01

    Coverage data--base is the qualitative measurement for the verification engineer to judge the complete degree of SoC verification, and it provides the safeguard for the SoC validation completeness. This paper takes the verification of SoC bus arbiter as an example, analyzes many kinds of coverage in detail, for example, structure coverage, functional coverage, assertion coverage and so on, then modifies the RTL design code and testcases based on the analysis results of these coverage, until the integrity of the verification meet the design requirements.%覆盖率数据是验证工程师判定SoC验证完备程度的定性度量,为SoC验证完全性提供了保障,指明了方向.文中以SoC总线仲裁器验证为例,对其结构覆盖率、功能覆盖率、断言覆盖率等多种覆盖率进行了全面的分析,然后根据覆盖率分析结果反馈到RTL设计代码和测试激励进行修正,直到验证的完整性满足设计的要求.

  2. Environmental Technology Verification Report for Abraxis 17β-Estradiol (E2) Magnetic Particle Enzyme-Linked Immunosorbent Assay (ELISA) Test Kits

    Science.gov (United States)

    The EPA's National Risk Management Research Laboratory (NRMRL) and its verification organization partner, Battelle, operate the Advanced Monitoring Systems (AMS) Center under ETV. The AMS Center recently evaluated the performance of the Abraxis 17(beta)-estradiol (E2) magnetic p...

  3. Topical report to Morgantown Energy Technology Center for the interfacial coatings for ceramic-matrix composites

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-01-09

    This report summarizes the task conducted to examine various activities on interface development for ceramic-matrix composites (CMCs) intended for high-temperature applications. While several articles have been published on the subject of CMC interfaces, the purpose of this report is to describe the various ongoing efforts on interface concepts, material selection, and issues related to processing methods employed for developing interface coatings. The most exciting and new development in the field is the discovery of monazite as a potential interface material for mullite- and alumina-based composites. Monazite offers two critical properties to the CMC system; a weakly bonded layer due to its non-wetting behavior and chemical compatibility with both alumina and mullite up to very high temperatures (> 1,600 C). A description of the Department of Energy-related activities and some thoughts on processing issues, interface testing, and effects of processing on fiber strength are given.

  4. GENERIC VERIFICATION PROTOCOL: DISTRIBUTED GENERATION AND COMBINED HEAT AND POWER FIELD TESTING PROTOCOL

    Science.gov (United States)

    This report is a generic verification protocol by which EPA’s Environmental Technology Verification program tests newly developed equipment for distributed generation of electric power, usually micro-turbine generators and internal combustion engine generators. The protocol will ...

  5. KAJIAN TEKNOLOFI EDIBLE COATING DARI PATI DAN APLIKASINYA UNTUK PENGEMAS PRIMER LEMPOK DURIAN [Technological Assessment of Starch Edible Coating and Its Application on Primary Packaging of Durian Sweets

    Directory of Open Access Journals (Sweden)

    Budi Santoso1

    2004-12-01

    Full Text Available The study objective was to determine the shelf life of edible coating packaged of durian lempok. The experimental method used in this study was Factorial Randomized Block Design consisting of three factors. These factors were tapioca starch, stearate acid, and CMC. The edible coating solution was applied in to durian lempok by using dip method. The result showed that edible coating packaged of durian lempok could increase the durian lempok shelf life by 67 percent than durian lempok without edible coating. The edible coating was capable of decreasing the durian lempok weight loss by magnitude of 36.38% during storage, decreasing the peroxide number by magnitude of 33.33%, decreasing the water content by magnitude of 7.54%, and suppressing the microbial growth by the amount of 31.20%, respectively. Visual change of non-coating lempok had occurred on the day of 19th, which was indicated by greyish-white colour change due to certain type of mold on lempok surface, while the similar change happened at day of 31th (T2A3C3 treatment.

  6. Cleaning Verification Monitor Technique Based on Infrared Optical Methods

    Science.gov (United States)

    2004-10-01

    Cleaning Verification Techniques.” Real-time methods to provide both qualitative and quantitative assessments of surface cleanliness are needed for a...detection VCPI method offer a wide range of complementary capabilities in real-time surface cleanliness verification. Introduction Currently...also has great potential to reduce or eliminate premature failures of surface coatings caused by a lack of surface cleanliness . Additional

  7. Experimental Equipment and Basic Technological Methods of Obtaining Cavitation Protective Coatings on Working Surfaces of Steam Turbine Blades Made of Titanium Alloy VT6 in Order to Replace Imports of Similar Products

    Directory of Open Access Journals (Sweden)

    Bilous, V.A.

    2016-07-01

    Full Text Available The experimental equipment and basic technological methods of obtaining сavitation protective coatings on the working surfaces of blades of steam turbines from titanium alloy VT6 have been created. The selection and the basis of the composition and conditions of synthesis of optimal coating for hardening blades have been justified. The parameters of deposition process of coatings on the blade model have been worked, the experimental technological deposition process of hardening coatings has been created. The tests of titanium alloy VT6 samples with the preferred coatings in simulation conditions close to operational have been conducted. The coatings on the blade model of length up to 130 cm and weight up to 30 kg have been deposited. The velocity of the TiN coating depositing was 10 mkm/h.

  8. Verification Games: Crowd-Sourced Formal Verification

    Science.gov (United States)

    2016-03-01

    Government drawings, specifications, or other data included in this document for any purpose other than Government procurement does not in any way...information exchange, and its publication does not constitute the Government’s approval or disapproval of its ideas or findings. REPORT DOCUMENTATION ...DATES COVERED (From - To) JUN 2012 – SEP 2015 4. TITLE AND SUBTITLE VERIFICATION GAMES: CROWD-SOURCED FORMAL VERIFICATION 5a. CONTRACT NUMBER FA8750

  9. An ultrasonic technology for production of antibacterial nanomaterials and their coating on textiles

    Directory of Open Access Journals (Sweden)

    Anna V. Abramova

    2014-04-01

    Full Text Available A method for the production of antibacterial ZnO nanoparticles has been developed. The technique combines passing an electric current with simultaneous application of ultrasonic waves. By using high-power ultrasound a cavitation zone is created between two zinc electrodes. This leads to the possibility to create a spatial electrical discharge in water. Creation of such discharge leads to the depletion of the electrodes and the formation of ZnO nanoparticles, which demonstrate antibacterial properties. At the end of this reaction the suspension of ZnO nanoparticles is transported to a specially developed ultrasonic reactor, in which the nanoparticles are deposited on the textile. The nanoparticles are embedded into the fibres by the cavitation jets, which are formed by asymmetrically collapsing bubbles in the presence of a solid surface and are directed towards the surface of textile at very high velocities. Fabrics coated with ZnO nanoparticles by using the developed method showed good antibacterial activity against E. coli.

  10. Fiscal 1997 report of the development of high efficiency waste power generation technology. No.2 volume. Pilot plant verification test; Kokoritsu haikibutsu hatsuden gijutsu kaihatsu (pilot plant jissho shiken). 1997 nendo hokokusho (daini bunsatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    As to a high efficiency waste power generation system using general waste as fuel, the details of the following were described: design/construction management and operational study of pilot plant, design/manufacture/construction of pilot plant, and study of an optimal total system. Concerning the construction management and operational study, the paper described the application for governmental/official inspection procedures and taking inspection, process management of pilot plant, site patrol, safety management, management of trial run of pilot plant, drawing-up of a verification test plan and test run, etc. Relating to the design/manufacture/construction of pilot plant, an outline of the pilot plant was described. The paper also stated points to be considered in design of furnace structure and boiler structure, points to be considered of the verification test, etc. As to the study of an optimal total system, the following were described: survey of waste gasification/slagging power generation technology, basic study on RDF production process, survey of trends of waste power generation technology in the U.S., etc. 52 refs., 149 figs., 121 tabs.

  11. The Use of the Molecular Adsorber Coating Technology to Mitigate Vacuum Chamber Contamination During Pathfinder Testing for the James Webb Space Telescope

    Science.gov (United States)

    Abraham, Nithin S.; Hasegawa, Mark M.; Wooldridge, Eve M.; Henderson-Nelson, Kelly A.

    2016-01-01

    As a coating made of highly porous zeolite materials, the Molecular Adsorber Coating (MAC) was developed to capture outgassed molecular contaminants, such as hydrocarbons and silicones. For spaceflight applications, the adsorptive capabilities of the coating can alleviate on-orbit outgassing concerns on or near sensitive surfaces and instruments within the spacecraft. Similarly, this sprayable paint technology has proven to be significantly beneficial for ground based space applications, in particular, for vacuum chamber environments. This paper describes the recent use of the MAC technology during Pathfinder testing of the Optical Ground Support Equipment (OGSE) for the James Webb Space Telescope (JWST) at NASA Johnson Space Center (JSC). The coating was used as a mitigation tool to entrap persistent outgassed contaminants, specifically silicone based diffusion pump oil, from within JSC's cryogenic optical vacuum chamber test facility called Chamber A. This paper summarizes the sample fabrication, installation, laboratory testing, post-test chemical analysis results, and future plans for the MAC technology, which was effectively used to protect the JWST test equipment from vacuum chamber contamination.

  12. DIFFUSIVELY ALLOYED COMPOUNDS MADE OF METAL DISCARD WITH A REDUCED MELTING TEMPERATURE FOR OBTAINING WEAR RESISTANT COATINGS USING INDUCTION HARD-FACING TECHNOLOGIES

    Directory of Open Access Journals (Sweden)

    V. G. Shcherbakou

    2016-01-01

    Full Text Available The technology of obtaining diffusion doped alloys made from metal scrap is reviewed in the article. The influence of short term preprocessing at high temperature on structure formation by concentrated energy sources within the further induction deposit is reviewed. A mechanism of a contact eutectic melting in diffusion doped alloys at short term high temperature treatment is described and suggested in this work. It was shown that such kind of processing of diffusion doped alloys is a perspective way of treatment when using induction hard-facing technologies for obtaining wear resistant coatings. A resource and energy saving technology was developed for obtaining wear resistant coatings based on diffusion doped alloys from metal scrap treated using induction hard-facing process.

  13. Preparation of ultra-fine powders from polysaccharide-coated solid lipid nanoparticles and nanostructured lipid carriers by innovative nano spray drying technology.

    Science.gov (United States)

    Wang, Taoran; Hu, Qiaobin; Zhou, Mingyong; Xue, Jingyi; Luo, Yangchao

    2016-09-10

    In this study, five polysaccharides were applied as natural polymeric coating materials to prepare solid lipid nanoparticles (SLN) and nanostructure lipid carriers (NLC), and then the obtained lipid colloidal particles were transformed to solid powders by the innovative nano spray drying technology. The feasibility and suitability of this new technology to generate ultra-fine lipid powder particles were evaluated and the formulation was optimized. The spray dried SLN powder exhibited the aggregated and irregular shape and dimension, but small, uniform, well-separated spherical powder particles of was obtained from NLC. The optimal formulation of NLC was prepared by a 20-30% oleic acid content with carrageenan or pectin as coating material. Therefore, nano spray drying technology has a potential application to produce uniform, spherical, and sub-microscale lipid powder particles when the formulation of lipid delivery system is appropriately designed. Copyright © 2016 Elsevier B.V. All rights reserved.

  14. Solar Array Verification Analysis Tool (SAVANT) Developed

    Science.gov (United States)

    Bailey, Sheila G.; Long, KIenwyn J.; Curtis, Henry B.; Gardner, Barbara; Davis, Victoria; Messenger, Scott; Walters, Robert

    1999-01-01

    Modeling solar cell performance for a specific radiation environment to obtain the end-of-life photovoltaic array performance has become both increasingly important and, with the rapid advent of new types of cell technology, more difficult. For large constellations of satellites, a few percent difference in the lifetime prediction can have an enormous economic impact. The tool described here automates the assessment of solar array on-orbit end-of-life performance and assists in the development and design of ground test protocols for different solar cell designs. Once established, these protocols can be used to calculate on-orbit end-of-life performance from ground test results. The Solar Array Verification Analysis Tool (SAVANT) utilizes the radiation environment from the Environment Work Bench (EWB) model developed by the NASA Lewis Research Center s Photovoltaic and Space Environmental Effects Branch in conjunction with Maxwell Technologies. It then modifies and combines this information with the displacement damage model proposed by Summers et al. (ref. 1) of the Naval Research Laboratory to determine solar cell performance during the course of a given mission. The resulting predictions can then be compared with flight data. The Environment WorkBench (ref. 2) uses the NASA AE8 (electron) and AP8 (proton) models of the radiation belts to calculate the trapped radiation flux. These fluxes are integrated over the defined spacecraft orbit for the duration of the mission to obtain the total omnidirectional fluence spectra. Components such as the solar cell coverglass, adhesive, and antireflective coatings can slow and attenuate the particle fluence reaching the solar cell. In SAVANT, a continuous slowing down approximation is used to model this effect.

  15. Research and application of multi-core technology in SoC verification%SoC仿真验证中多核技术的研究与应用

    Institute of Scientific and Technical Information of China (English)

    刘瑞; 邵智勇; 康春雷; 李斌

    2015-01-01

    With the increasing enlargement of SoC design scale and the gradual complexity of its structure,the verification simulation has become an important part of the SoC design process,and its required time often becomes a bottleneck of the en⁃tire design cycle,so the research and application of the technology that can speed up the simulation verification is imperative. The multi⁃core technology offered by Synopsys Company’s simulation tool VCS makes the multiple processors working in parallel to achieve the lifting of the simulation speed. The feasibility and effectiveness of the multi⁃core technology was proved by analy⁃sis in actual project and the design level parallelism(DLP)method which is one of the multi⁃core technologies.%随着SoC设计规模的日益增大,结构逐渐复杂,仿真验证已经成为Soc设计过程中重要的环节,其所需时间往往成为整个设计周期的瓶颈,因而研究和应用能够加快验证仿真速度的技术变得愈发重要。Synopsys公司的仿真工具VCS所提供的多核技术就是利用目前计算机所拥有的多个处理器核并行工作,以达到对仿真速度的提升。通过在实际项目中分析和使用多核技术中的设计级并行仿真方法,证明了该多核技术的可行性和有效性。

  16. Development of wear-resistant ceramic coatings for diesel engine components. Volume 1, Coating development and tribological testing: Final report: DOE/ORNL Ceramic Technology Project

    Energy Technology Data Exchange (ETDEWEB)

    Naylor, M.G.S. [Cummins Engine Co., Inc., Columbus, IN (United States)

    1992-06-01

    The tribological properties of a variety of advanced coating materials have been evaluated under conditions which simulate the piston ring -- cylinder liner environment near top ring reversal in a heavy duty diesel engine. Coated ``ring`` samples were tested against a conventional pearlitic grey cast iron liner material using a high temperature reciprocating wear test rig. Tests were run with a fresh CE/SF 15W40lubricant at 200 and 350{degrees}C, with a high-soot, engine-tested oil at 200{degrees}C and with no lubrication at 200{degrees}C. For lowest wear under boundary lubricated conditions, the most promising candidates to emerge from this study were high velocity oxy-fuel (HVOF) Cr{sub 3} C{sub 2} - 20% NiCr and WC - 12% Co cermets, low temperature arc vapor deposited (LTAVD) CrN and plasma sprayed chromium oxides. Also,plasma sprayed Cr{sub 2}O{sub 3} and A1{sub 2}O{sub 3}-ZrO{sub 2} materials were found to give excellent wear resistance in unlubricated tests and at extremely high temperatures (450{degrees}C) with a syntheticoil. All of these materials would offer substantial wear reductions compared to the conventional electroplated hard chromium ring facing and thermally sprayed metallic coatings, especially at high temperatures and with high-soot oils subjected to degradation in diesel environments. The LTAVD CrN coating provided the lowest lubricated wear rates of all the materials evaluated, but may be too thin (4 {mu}m) for use as a top ring facing. Most of the coatings evaluated showed higher wear rates with high-soot, engine-tested oil than with fresh oil, with increases of more than a factor of ten in some cases. Generally, metallic materials were found to be much more sensitive to soot/oil degradation than ceramic and cermet coatings. Thus, decreased ``soot sensitivity`` is a significant driving force for utilizing ceramic or cermet coatings in diesel engine wear applications.

  17. Decontamination of paint-coated concrete in nuclear plants using laser technology

    Energy Technology Data Exchange (ETDEWEB)

    Anthofer, Anton; Lippmann, Wolfgang; Hurtado, Antonio [Technische Univ. Dresden (Germany). Chair of Hydrogen and Nuclear Technology

    2013-07-01

    A review of the state of the art shows the technical novelty of the combined project. The development of an all-in-one process for treatment hazard chemical contamination on concrete structures with online monitoring method reduces the laborious mechanic decontamination and post-treatment. For safe experimental investigations, a three-barrier-system was constructed and can be used for tests with - first - epoxy paint in order to analyze and optimize the process. Simulation models help to formulate a mathematic scheme of the decontamination process by laser technology. The goal is a decontamination system with an online analyzing system of the flue gas for a mobile and extensive component in nuclear and conventional decommission. (orig.)

  18. Technology and Properties of Layered Composites as Coatings for Heat Transfer Enhancement

    Science.gov (United States)

    Chatys, R.; Orman, Ł. J.

    2017-07-01

    The mechanical properties of porous structures consisting of copper wires reinforced with carbon and glass fibers for assessment of the adhesion strength of the porous structure produced and cohesion between components of the structures investigated, which are used for heat exchangers, are considered. The internal structure of bonds between their elements was analyzed by metallographic techniques. The statistical relationships for bonds between layers are given. The auxiliary characteristics of technology connected with the "hydrogen disease" of copper are discussed. Specimens were tested for characteristics of their tensile strength. The thermal performance of sintered heat exchangers was also investigated on brass-copper, bronze-copper, and copper-copper samples. The nucleate boiling mode of heat transfer was selected for experiments with distilled water and ethyl alcohol as working fluids.

  19. Verification Account Management System (VAMS)

    Data.gov (United States)

    Social Security Administration — The Verification Account Management System (VAMS) is the centralized location for maintaining SSA's verification and data exchange accounts. VAMS account management...

  20. Verification of ceramic structures

    NARCIS (Netherlands)

    Behar-Lafenetre, S.; Cornillon, L.; Rancurel, M.; Graaf, D. de; Hartmann, P.; Coe, G.; Laine, B.

    2012-01-01

    In the framework of the "Mechanical Design and Verification Methodologies for Ceramic Structures" contract [1] awarded by ESA, Thales Alenia Space has investigated literature and practices in affiliated industries to propose a methodological guideline for verification of ceramic spacecraft and instr

  1. High Sensitivity Refractometer Based on TiO2-Coated Adiabatic Tapered Optical Fiber via ALD Technology

    Science.gov (United States)

    Zhu, Shan; Pang, Fufei; Huang, Sujuan; Zou, Fang; Guo, Qiang; Wen, Jianxiang; Wang, Tingyun

    2016-01-01

    Atomic layer deposition (ALD) technology is introduced to fabricate a high sensitivity refractometer based on an adiabatic tapered optical fiber. Different thicknesses of titanium dioxide (TiO2) nanofilm were coated around the tapered fiber precisely and uniformly under different deposition cycles. Attributed to the higher refractive index of the TiO2 nanofilm compared to that of silica, an asymmetric Fabry–Perot (F-P) resonator could be constructed along the fiber taper. The central wavelength of the F-P resonator could be controlled by adjusting the thickness of the TiO2 nanofilm. Such a F-P resonator is sensitive to changes in the surrounding refractive index (SRI), which is utilized to realize a high sensitivity refractometer. The refractometer developed by depositing 50.9-nm-thickness TiO2 on the tapered fiber shows SRI sensitivity as high as 7096 nm/RIU in the SRI range of 1.3373–1.3500. Due to TiO2’s advantages of high refractive index, lack of toxicity, and good biocompatibility, this refractometer is expected to have wide applications in the biochemical sensing field. PMID:27537885

  2. Evaluation of AK-225(R), Vertrel(R) MCA and HFE A 7100 as Alternative Solvents for Precision Cleaning and Verification Technology

    Science.gov (United States)

    Melendez, Orlando; Trizzino, Mary; Fedderson, Bryan

    1997-01-01

    The National Aeronautics and Space Administration (NASA), Kennedy Space Center (KSC) Materials Science Division conducted a study to evaluate alternative solvents for CFC-113 in precision cleaning and verification on typical samples that are used in the KSC environment. The effects of AK-225(R), Vertrel(R), MCA, and HFE A 7100 on selected metal and polymer materials were studied over 1, 7 and 30 day test times. This report addresses a study on the compatibility aspects of replacement solvents for materials in aerospace applications.

  3. Nuclear Data Verification and Standardization

    Energy Technology Data Exchange (ETDEWEB)

    Karam, Lisa R.; Arif, Muhammad; Thompson, Alan K.

    2011-10-01

    The objective of this interagency program is to provide accurate neutron interaction verification and standardization data for the U.S. Department of Energy Division of Nuclear Physics programs which include astrophysics, radioactive beam studies, and heavy-ion reactions. The measurements made in this program are also useful to other programs that indirectly use the unique properties of the neutron for diagnostic and analytical purposes. These include homeland security, personnel health and safety, nuclear waste disposal, treaty verification, national defense, and nuclear based energy production. The work includes the verification of reference standard cross sections and related neutron data employing the unique facilities and capabilities at NIST and other laboratories as required; leadership and participation in international intercomparisons and collaborations; and the preservation of standard reference deposits. An essential element of the program is critical evaluation of neutron interaction data standards including international coordinations. Data testing of critical data for important applications is included. The program is jointly supported by the Department of Energy and the National Institute of Standards and Technology.

  4. Improvement of Quality of Carica papaya L. with Clove Oil as Preservative in Edible Coating Technology

    Directory of Open Access Journals (Sweden)

    Eny Kusrini

    2015-12-01

    Full Text Available We have studied utilization of essential clove oil, extracted from clove buds by hydrodistillation, as preservative in edible packaging technology. Preservative of essential clove oil was applied on chopped papaya fruits by using two methods, namely spray and brush. The effects of concentration of clove oil from 0.05 to 0.20% on the preservation of papaya fruits (Carica papaya L. at room temperature (25 °C were also evaluated. Physicochemical and in vitro microbiological activities on the papaya fruits that were stored at 25 oC and 85-90% relative humidity were investigated in details. The results indicate that the clove oil at concentration ≥0.10% suppressed the decay time, 10% weight loss, 0.03 g citric acid/100 g in acidity titration test, and 20% pH value from those of control sample of papaya fruits kept in a storage. The population of fungi and bacteria were efficiently reduced by 90% when the clove oil at concentration ≥0.10% was applied as preservative on papaya fruits. This finding suggested that the extracted essential clove oil acted as effective antifungal and antibacterial agents. Preservative by essential clove oil improved the quality of fruits to extend the product shelf life and to reduce the risk of microbial growth on fruits surface.

  5. 1394总线物理层芯片虚拟验证关键技术研究%Research on Key Technology of 1394 Bus PHY Chip Virtual Verification

    Institute of Scientific and Technical Information of China (English)

    徐文进; 田泽; 郑新建; 楼晓强

    2016-01-01

    1394 bus supports isochronous and asynchronous transaction of flow transmission,which has the characteristics of certain band-width,real-time data transmission and flexible topology,meeting the requirements of avionics system to bus bandwidth,real-time,fault tolerance and reliability. Physical layer chip is the core device of the IEEE1394 buses. In the whole development process of the chip,the ability to fully verify its direct impact on the final tape-out is crucial. In this paper,the function of the 1394 bus physical layer chip is ana-lyzed,and the verification strategy is described,and a kind of key technologies of virtual verification platform is put forward. This verifi-cation platform has high efficiency,flexibility and so on. Through the implementation of digital logic,it can shorten the time of verifica-tion,improve the efficiency of verification,save the human resources,and have a certain reference value for the development of the 1394 bus related products.%1394总线支持等时和异步流传输事务,具有确定性带宽、实时数据传输、拓扑灵活等特点,满足航空电子系统对总线带宽、实时性、容错和可靠性等方面的要求.物理层芯片是1394总线网络的核心器件,在研制过程中能否对其进行充分验证,是直接影响其投片成功的关键因素之一.文中通过对1394总线物理层芯片进行功能分析,描述了芯片的验证策略,提出了一种虚拟验证平台搭建的关键技术.该验证平台具有高效率、灵活等特点.通过对数字逻辑的验证实施,可以极大地缩短验证时间,提高验证效率,节省验证人力,并对后续1394总线相关产品的开发具有一定参考价值.

  6. Verification Technology of Uninterruption Power System Relay Protection for Smart Substation%智能变电站不停电电力系统继电保护校验技术

    Institute of Scientific and Technical Information of China (English)

    童洁; 陈晓刚; 侯伟宏

    2013-01-01

    In view of 220 kV Yunhui smart substation in Hangzhou municipal electric power bureau,combination of traditional secondary equipment and primary equipment with interruption of power supply for relay protection verification may increase scheduled outages of primary equipment and reduce power supply reliability.In order to ensure uninterruption of power supply relay protection verification for smart substation,some technologies including sample fiber optic network,GOOSE fiber optic network,GOOSE message,double-test line protection device,and complete double protection,are used to design GOOSE outlet safety measure of Yunhui smart substation.And then,the basic principle of online verification GOOSE outlet safety measure is proposed.At the same time,it discusses the safety measure of uninterruption of power supply protection verification for smart substation and engineering practice.So,it achieves the relay protection verification without power cut in China.Furthermore,it proves the reliability of online relay protection verification technolo gy without power cut in smart substation.%针对杭州电力局220 kV云会全智能变电站继电保护系统,采用传统的二次设备伴随一次设备停电的传统方法进行电力系统继电保护校验,增加了一次设备计划停电次数、降低了供电可靠性等.为使智能变电站继电保护不停电校验,充分利用智能变电站采样值光纤网络技术、GOOSE光纤网络技术、GOOSE心跳报文技术、双重化的保测一体化线路保护装置、双套保护实现完全双重化设计等整合出云会全智能化变电站的GOOSE出口安措技术,提出了在线校验GOOSE出口安措的基本原则,探索了智能变电站不停电保护校验的安措,并进行了智能变电站不停电保护校验的工程实践,实现了我国智能变电站继电保护不停电校验,进而验证了智能化变电站继电保护不停电在线校验安措技术的可靠性.

  7. Monitoring and verification R&D

    Energy Technology Data Exchange (ETDEWEB)

    Pilat, Joseph F [Los Alamos National Laboratory; Budlong - Sylvester, Kory W [Los Alamos National Laboratory; Fearey, Bryan L [Los Alamos National Laboratory

    2011-01-01

    The 2010 Nuclear Posture Review (NPR) report outlined the Administration's approach to promoting the agenda put forward by President Obama in Prague on April 5, 2009. The NPR calls for a national monitoring and verification R&D program to meet future challenges arising from the Administration's nonproliferation, arms control and disarmament agenda. Verification of a follow-on to New START could have to address warheads and possibly components along with delivery capabilities. Deeper cuts and disarmament would need to address all of these elements along with nuclear weapon testing, nuclear material and weapon production facilities, virtual capabilities from old weapon and existing energy programs and undeclared capabilities. We only know how to address some elements of these challenges today, and the requirements may be more rigorous in the context of deeper cuts as well as disarmament. Moreover, there is a critical need for multiple options to sensitive problems and to address other challenges. There will be other verification challenges in a world of deeper cuts and disarmament, some of which we are already facing. At some point, if the reductions process is progressing, uncertainties about past nuclear materials and weapons production will have to be addressed. IAEA safeguards will need to continue to evolve to meet current and future challenges, and to take advantage of new technologies and approaches. Transparency/verification of nuclear and dual-use exports will also have to be addressed, and there will be a need to make nonproliferation measures more watertight and transparent. In this context, and recognizing we will face all of these challenges even if disarmament is not achieved, this paper will explore possible agreements and arrangements; verification challenges; gaps in monitoring and verification technologies and approaches; and the R&D required to address these gaps and other monitoring and verification challenges.

  8. Laser coating of zirconium + ZrO2 composites on Ti6Al4V for biomedical applications

    CSIR Research Space (South Africa)

    Baloyi, N

    2012-11-01

    Full Text Available Laser coating is an advanced coating technology for improving the surface properties of various components. These coatings are extremely dense, crack-free and have non-porous microstructures. Coatings archived by laser based coating technology have...

  9. 电爆喷涂中工艺参数对涂层性能的影响%Effect of Technological Parameters on Coating Properties in Wire Exploding Spray Coating

    Institute of Scientific and Technical Information of China (English)

    杨家志; 刘钟阳

    2011-01-01

    Metal coating was prepared by wire exploding spray coating (WESC) technology on nonmetal surface, such as glass, ceramics. The experimental samples of WESC under different technological parameters were measured and analyzed, in order to determine the relationship between the technological parameter and the coating quality. The results demonstrate that, during the WESC process, when the initial capacitor voltage increases from l0kV to 20kV, the metal wire diameter decreases from lmm to 0. 5mm, the circuit conductance decreases from 10. 8 μH to 3.9μH, the wire heats up more sufficiently, the mean diameter of metal micro-particle generated by the exploding is smaller, and the temperature and speed of the particle are higher, the coating prepared is more compact, dense and even, and the minimum resistance of the coating is 0. 235mΩ.%电爆喷涂技术能够快速、方便地在玻璃等非金属表面制备金属涂层.通过对不同工艺参数下电爆喷涂实验样品的测试与分析,得到了工艺参数与涂层性能之间的关系.结果表明,电爆喷涂过程中,当电容器初始电压从10kV逐渐增大到20kV、金属丝直径由1mm逐渐减小到0.5mm、回路电感由10.8μH逐渐减小到3.9μH时,能够使金属丝的受热更加充分,爆炸产生的金属微粒的平均粒径更小,温度更高,飞行速度更快,因而形成的涂层更加致密、均匀,涂层电阻最小达到0.235mΩ.

  10. Preparation Technology and Performances of Zn-Cr Coating on Sintered NdFeB Permanent Magnet

    Institute of Scientific and Technical Information of China (English)

    Yu Shengxue; Chen Ling

    2006-01-01

    Zn-Cr coating was prepared on the surface of sintered NdFeB permanent magnet samples and preparation parameters were established.The anticorrosive property of Zn-Cr coating on NdFeB was studied by whole-immersion test in NaCl solution and compared with that of zinc plating and nickel plating on NdFeB.Open-circuit potential and self-corrosion current of NdFeB samples with and without Zn-Cr coating were measured.The micro-morphology and composition of Zn-Cr coating were analyzed through SEM, XPS, EDS and XRD.The effect of Zn-Cr coating on magnetic property of NdFeB magnet was also investigated.It is exposed that Zn-Cr coating is anodic type coating for NdFeB magnet, and provided substrate electrochemical protection, barrier protection and passivation protection.The anticorrosion property of NdFeB magnet is obviously enhanced by Zn-Cr coating while the magnet property of NdFeB magnet changed little.

  11. Development of adherent ceramic coatings to reduce contact stress damage of ceramics. Final report: DOE/ORNL Ceramic Technology Project

    Energy Technology Data Exchange (ETDEWEB)

    Wayne, S.F.; Selverian, J.H.; O`Neil, D. [GTE Labs., Inc., Waltham, MA (United States)

    1992-11-01

    Strongly adherent coatings were deposited on reaction bonded Si{sub 3}N{sub 4} (RBSN), sintered SiC (SSC), and HIP`ed Si{sub 3}N{sub 4} (HSN) and using a newly developed chemical vapor deposition (CVD) process. Performance of the coating was assessed by oxidation, strength and contact stress testing. A new method was developed to experimentally determine the strength and Weibull modulus of thin brittle films on ceramic substrates. A significant portion of the study was devoted to numerical modeling of the coatings in order to understand the contributions of residual stress as different coating materials and thicknesses were combined. Coating designs were further analyzed by simulating the crack growth behavior in multilayer films while accounting for the interface fracture mechanics. This work has shown that the Al{sub 2}0{sub 3+}ZrO{sub 2} composite coating developed in this program can provide resistance to oxidation and contact stress. Commercial application of the composite coating has been successfully demonstrated by useof the Al{sub 2}0{sub 3+}ZrO{sub 2} composite as a protective coating on a Si{sub 3}N{sub 4} cutting tool.

  12. INCREASING EFFICIENCY OF REPAIRING, MANUFACTURING AND OPERATION OF THE TPP FACILITIES BY TECHNOLOGY OF GAS-THERMAL COATING AND LASER SURFACE MELTING

    Directory of Open Access Journals (Sweden)

    O. E. Grachev

    2015-01-01

    Full Text Available The article considers effectiveness increase of the TPP heat-mechanical equipment repair, manufacturing and maintenance as exemplified by gas-thermal technique for hardening laststages rotor blades of the steam turbines. The rotor blades work under conditions of intense power loading, their airfoil being erosion-corrosion destructed by the action of the moist-steam flow. Repairing companies employ quite a number of technologies to restore some of erosion-worn rotor blades. Inter alia, argon-arc, plasma and gas-powder weld deposition of the original material with subsequent machining, stellite protection recovery, electrical spark alloying the entry edge mat surface, spraying ion-plasma coating on the blade airfoil surface. In domestic turbine building, rotor blades of the steam turbines last stages are manufactured of martensitic class stainless steel. The key condition for successful blade restoration is thermal effect minimizing on the base material for excluding the slag areas possible forming. The laser surface coating technology provides these conditions. They coat the surface of an item being processed by way of melting the base and the adding material. In as much the base melts smallest, the coating characteristics depend mainly on the properties of adding material. The procedure of laser coating passes through several stages including physical contact creation, chemical interaction (laser radiation absorption, volumetrical processes resulting in formation of stable bonds in volume of the materials that have reacted. For the low-pressure cylinder rotor blades supplementary protection against erosion destruction, LLC ‘Technological Systems of Protective Coating’ developed technology of the blade airfoil protective finish by method of high-speed gas-flame sputter. The company realized this technology in 2012 during K-200-12,8 turbine (of the Leningrad Metallurgical Works – LMZ repairing in Zainsk SDPP by JSC ‘Tatenergo’. The

  13. Advanced verification topics

    CERN Document Server

    Bhattacharya, Bishnupriya; Hall, Gary; Heaton, Nick; Kashai, Yaron; Khan Neyaz; Kirshenbaum, Zeev; Shneydor, Efrat

    2011-01-01

    The Accellera Universal Verification Methodology (UVM) standard is architected to scale, but verification is growing and in more than just the digital design dimension. It is growing in the SoC dimension to include low-power and mixed-signal and the system integration dimension to include multi-language support and acceleration. These items and others all contribute to the quality of the SOC so the Metric-Driven Verification (MDV) methodology is needed to unify it all into a coherent verification plan. This book is for verification engineers and managers familiar with the UVM and the benefits it brings to digital verification but who also need to tackle specialized tasks. It is also written for the SoC project manager that is tasked with building an efficient worldwide team. While the task continues to become more complex, Advanced Verification Topics describes methodologies outside of the Accellera UVM standard, but that build on it, to provide a way for SoC teams to stay productive and profitable.

  14. Distributed Engine Control Empirical/Analytical Verification Tools Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In this Phase I project, Impact Technologies, in collaboration with Prof. R.K. Yedavalli, propose a novel verification environment for eventual rapid certification...

  15. 20 January 2014 - Members of the Regional Assemblies and Parliaments United Kingdom of Great Britain and Northern Ireland visiting the LHC tunnel at Point 8 with Technology Department, Vacuum, Surfaces and Coatings Group P. Cruikshank.

    CERN Multimedia

    Pantelia, Anna

    2014-01-01

    20 January 2014 - Members of the Regional Assemblies and Parliaments United Kingdom of Great Britain and Northern Ireland visiting the LHC tunnel at Point 8 with Technology Department, Vacuum, Surfaces and Coatings Group P. Cruikshank.

  16. Development of nuclear thermal hydraulic verification test and evaluation technology - Development of fundamental technique for experiment of natural circulation phenomena in PWR systems

    Energy Technology Data Exchange (ETDEWEB)

    Park, Goon Cherl; Lee, Tae Ho; Kim, Moon Oh; Kim, Hak Joon [Seoul National University, Seoul (Korea)

    2000-04-01

    The dimensional analysis applied two-fluid model of CFX-4,2 were performed. For verification of analysis results, experimental measurement data of two-phase flow parameters in subcooled boiling flow were produced for vertical(0 deg) and inclination (60 deg). And through comparison analysis and experiments the application possibility of various two -phase flow models and the analysis ability of code were evaluated. Measurement technique of bubble velocity in two-phase flow using backscattering standard LDV was investigated from slug to bubbly flow regime. The range of velocity measured is from 0.2 to 1.5 m/s and that of bubble size is from 2 to 20 mm. For local temperature of boiling flow measurement, microthermocouple were manufactured and local liquid and vapor temperatures were measured in pool boiling and boiling flow. 66 refs., 74 figs., 4 tabs. (Author)

  17. Porous Silicon & Titanium Dioxide Coatings Prepared by Atmospheric Pressure Plasma Jet Chemical Vapour Deposition Technique-A Novel Coating Technology for Photovoltaic Modules

    Directory of Open Access Journals (Sweden)

    S. Bhatt

    2011-01-01

    Full Text Available Atmospheric Pressure Plasma Jet (APPJ is an alternative for wet processes used to make anti reflection coatings and smooth substrate surface for the PV module. It is also an attractive technique because of it’s high growth rate, low power consumption, lower cost and absence of high cost vacuum systems. This work deals with the deposition of silicon oxide from hexamethyldisiloxane (HMDSO thin films and titanium dioxide from tetraisopropyl ortho titanate using an atmospheric pressure plasma jet (APPJ system in open air conditions. A sinusoidal high voltage with a frequency between 19-23 kHz at power up to 1000 W was applied between two tubular electrodes separated by a dielectric material. The jet, characterized by Tg ~ 600-800 K, was mostly laminar (Re ~ 1200 at the nozzle exit and became partially turbulent along the jet axis (Re ~ 3300. The spatially resolved emission spectra showed OH, N2, N2+ and CN molecular bands and O, H, N, Cu and Cr lines as well as the NO2 chemiluminescence continuum (450-800 nm. Thin films with good uniformity on the substrate were obtained at high deposition rate, between 800 -1000 nm.s-1, and AFM results revealed that coatings are relatively smooth (Ra ~ 2 nm. The FTIR and SEM analyses were better used to monitor the chemical composition and the morphology of the films in function of the different experimental conditions.

  18. Influence of rare earths addition on residual stress of Fe-based coating prepared by brush plating technology

    Institute of Scientific and Technical Information of China (English)

    JIN Guo; LU Bingwen; HOU Dingding; CUI Xiufang; SONG Jiahui; LIU Erbao

    2016-01-01

    The effect of rare earths (La, Ce and Pr) addition on residual stress in iron coatings prepared by brush plating was investi-gated. The results showed that the addition of rare earth transformed the residual stress in the coating from tensile to compressive. To relieve the residual stress, on the one hand, RE elements segregated at the grain boundaries which restricted the coalescence of the grains and provided more capability of grain deformation. On the other hand, RE elements could purify detrimental element and ab-sorb hydrogen atoms in the coating. Among the three rare earths, elements lanthanum showed the most significant effect on surface morphology and residual stress.

  19. SSN Verification Service

    Data.gov (United States)

    Social Security Administration — The SSN Verification Service is used by Java applications to execute the GUVERF02 service using the WebSphere/CICS Interface. It accepts several input data fields...

  20. Integrated Java Bytecode Verification

    DEFF Research Database (Denmark)

    Gal, Andreas; Probst, Christian; Franz, Michael

    2005-01-01

    Existing Java verifiers perform an iterative data-flow analysis to discover the unambiguous type of values stored on the stack or in registers. Our novel verification algorithm uses abstract interpretation to obtain definition/use information for each register and stack location in the program......, which in turn is used to transform the program into Static Single Assignment form. In SSA, verification is reduced to simple type compatibility checking between the definition type of each SSA variable and the type of each of its uses. Inter-adjacent transitions of a value through stack and registers...... are no longer verified explicitly. This integrated approach is more efficient than traditional bytecode verification but still as safe as strict verification, as overall program correctness can be induced once the data flow from each definition to all associated uses is known to be type-safe....

  1. Voltage verification unit

    Science.gov (United States)

    Martin, Edward J.

    2008-01-15

    A voltage verification unit and method for determining the absence of potentially dangerous potentials within a power supply enclosure without Mode 2 work is disclosed. With this device and method, a qualified worker, following a relatively simple protocol that involves a function test (hot, cold, hot) of the voltage verification unit before Lock Out/Tag Out and, and once the Lock Out/Tag Out is completed, testing or "trying" by simply reading a display on the voltage verification unit can be accomplished without exposure of the operator to the interior of the voltage supply enclosure. According to a preferred embodiment, the voltage verification unit includes test leads to allow diagnostics with other meters, without the necessity of accessing potentially dangerous bus bars or the like.

  2. Standard Verification System (SVS)

    Data.gov (United States)

    Social Security Administration — SVS is a mainframe program that accesses the NUMIDENT to perform SSN verifications. This program is called by SSA Internal applications to verify SSNs. There is also...

  3. Preparation and Evaluation of Orally Rapidly Disintegrating Tablets Containing Taste-Masked Particles Using One-Step Dry-Coated Tablets Technology

    National Research Council Canada - National Science Library

    Kondo, Keita; Niwa, Toshiyuki; Ozeki, Yuichi; Ando, Masaki; Danjo, Kazumi

    2011-01-01

    ...) containing functional (taste masking or controlled release) coated particles, such as the low compactability of coated particles and the rupture of coated membrane during compression, a novel ODT containing taste-masked coated particles (TMP...

  4. Develop Hydrophilic Conductive Coating Technology with High Oxidation Resistance for Non-Flow-Through PEM Fuel Cells and Electrolyzers Project

    Data.gov (United States)

    National Aeronautics and Space Administration — ElectroChem proposes to develop oxidation resistant, electrically conductive, hydrophilic coatings in PEM fuel cells and in PEM electrolyzers. The use of hydrophilic...

  5. Anticorrosive coatings: a review

    DEFF Research Database (Denmark)

    Sørensen, Per Aggerholm; Kiil, Søren; Dam-Johansen, Kim

    2009-01-01

    The main objective of this review is to describe some of the important topics related to the use of marine and protective coatings for anticorrosive purposes. In this context, "protective" refers to coatings for containers, offshore constructions, wind turbines, storage tanks, bridges, rail cars......, and petrochemical plants while "marine" refers to coatings for ballast tanks, cargo holds and cargo tanks, decks, and engine rooms on ships. The review aims at providing a thorough picture of state-of-the-art in anticorrosive coatings systems. International and national legislation aiming at reducing the emission...... of volatile organic compounds (VOCs) have caused significant changes in the anticorrosive coating industry. The requirement for new VOC-compliant coating technologies means that coating manufacturers can no longer rely on the extensive track record of their time-served products to convince consumers...

  6. Evaluation of HVOF coatings

    Directory of Open Access Journals (Sweden)

    Mariana Landová

    2016-07-01

    Full Text Available Attention in this paper is devoted to the evaluation of wear coatings deposited using HVOF technology (high velocity oxy-fuel. There were evaluated three types of coatings based on WC-Co (next only 1343, WC-Co-Cr (next only 1350 and Cr3C2-25NiCr (next only 1375. There was assessed adherence of coatings, micro hardness, porosity and the tribological properties of erosive, abrasive, adhesive and wear resistance of coatings in terms of cyclic thermal load. Thanks to wide variety of suitable materials and their combinations, the area of utilization thermally sprayed coatings is very broad. It is possible to deposit coatings of various materials from pure metals to special alloys. The best results in the evaluated properties were achieved at the coating with the label 1375.

  7. Comparison of particulate verification techniques study

    Science.gov (United States)

    Rivera, Rachel

    2006-08-01

    The efficacy of five particulate verification techniques on four types of materials was studied. Statistical Analysis Software/JMP 6.0 was used to create a statistically valid design of experiments. In doing so, 35 witness coupons consisting of the four types of materials being studied, were intentionally contaminated with particulate fallout. Image Analysis was used to characterize the extent of particulate fallout on the coupons and was used to establish a baseline, or basis of comparison, against the five techniques that were studied. The five particulate verification techniques were the Tapelift, the Particulate Solvent Rinse, the GelPak lift, an in-line vacuum filtration probe, and the Infinity Focusing Microscope (IFM). The four types of materials consisted of magnesium flouride (MgF II) coated mirrors, composite coated silver aluminum (CCAg), Z93 and NS43G coated aluminum, and silicon (si) wafers. The vacuum probe was determined to be most effective for Z93, the tapelift or vacuum probe for MgF2, and the GelPak Lift for CCAg and si substrates. A margin of error for each technique, based on experimental data from two experiments, for si wafer substrates, yielded the following: Tapelift - 67%, Solvent Rinse - 58%, GelPak- 26%, Vacuum Probe - 93%, IFM-to be determined.

  8. Effect of structure and deposition technology on tribological properties of DLC coatings alloyed with VIA group metals

    Science.gov (United States)

    Khrushchov, M.; Levin, I.; Marchenko, E.; Avdyukhina, V.; Petrzhik, M.

    2016-07-01

    The results of a comprehensive research on atomic structure, phase composition, micromechanical and tribological characteristics of alloyed DLC coatings have been presented. The coatings have been deposited by reactive magnetron sputtering in acetylene-nitrogen gas mixtures of different compositions (a-C:H:Cr), by plasma-assisted chemical vapor deposition in atmospheres of silicone-organic precursor gases (a-C:H:Mo:Si), and by nonreactive magnetron sputtering of a composite target (a-C:H:W).

  9. Embedded software verification and debugging

    CERN Document Server

    Winterholer, Markus

    2017-01-01

    This book provides comprehensive coverage of verification and debugging techniques for embedded software, which is frequently used in safety critical applications (e.g., automotive), where failures are unacceptable. Since the verification of complex systems needs to encompass the verification of both hardware and embedded software modules, this book focuses on verification and debugging approaches for embedded software with hardware dependencies. Coverage includes the entire flow of design, verification and debugging of embedded software and all key approaches to debugging, dynamic, static, and hybrid verification. This book discusses the current, industrial embedded software verification flow, as well as emerging trends with focus on formal and hybrid verification and debugging approaches. Includes in a single source the entire flow of design, verification and debugging of embedded software; Addresses the main techniques that are currently being used in the industry for assuring the quality of embedded softw...

  10. Effect of ultrasonic cold forging technology as the pretreatment on the corrosion resistance of MAO Ca/P coating on AZ31B Mg alloy

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Lingling, E-mail: daisy_chenlingling@163.com [College of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 (China); College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029 (China); Gu, Yanhong, E-mail: gu_yanhong@163.com [College of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 (China); Liu, Lu, E-mail: liulu@bipt.edu.cn [College of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 (China); Liu, Shujing, E-mail: liushujing@bipt.edu.cn [College of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 (China); Hou, Binbin, E-mail: sohu19880815@126.com [School of Engineering and Technology, China University of Geosciences, Beijing 100083 (China); Liu, Qi, E-mail: 13521196884@sina.cn [College of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 (China); Ding, Haiyang, E-mail: dinghaiyang@bipt.edu.cn [College of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 (China)

    2015-06-25

    Highlights: • Ultrasonic cold forging technology was used as the pretreatment for MAO coating. • Nano layer with the grain size of 30–80 nm was formed on the UCFT treated surface. • Calcium phosphate contained coating was obtained by MAO process. • The remained nano layer underlying MAO coating could impact the corrosion resistance greatly. - Abstract: A calcium phosphate contained (Ca/P) coating was obtained on AZ31B Mg alloy by micro-arc oxidation (MAO) process under the pretreatment of ultrasonic cold forging technology (UCFT). The surface nanograins were introduced after UCFT pretreatment on AZ31B Mg alloy. Optical microscope (OM) was employed to observe the microstructures of the untreated and UCFT treated samples. Transmission electron microscopy (TEM) and atomic force microscope (AFM) were employed to observe the microstructures of nanograins and the surface roughness of the UCFT treated Mg alloys. The grain size of the UCFT treated Mg alloy is 48.67 nm and the surface roughness is 17.03 nm. The microstructures and the phase compositions of MAO samples were observed and analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The XRD results show that the coating include Ca/P phase, including hydroxyapatite (Ca{sub 10}(PO{sub 4}){sub 6}(OH){sub 2}), HA), tertiary calcium phosphate (Ca{sub 3}(PO{sub 4}){sub 2}, TCP) and calcium phosphate dehydrate (CaHPO{sub 4}⋅2H{sub 2}O, DCPD). The hardness of the samples was measured by the micro-hardness tester under the loads of 10 g, 25 g and 50 g. 3D topographies of hardness indenter were characterized by 3D profiler. The immersion tests and potentiodynamic polarization tests were used to evaluate the weight loss rate and corrosion current density in simulated body fluid (SBF). The results show that the corrosion resistance of Ca/P MAO coating on Mg alloy was improved greatly by the pretreatment of UCFT.

  11. Research on Field Verification Technology of Substation Intelligent Measurement System%智能变电站量测系统现场检定技术的研究

    Institute of Scientific and Technical Information of China (English)

    程昱舒; 潘泳超; 赵园; 蔚晓明

    2013-01-01

      智能变电站与传统变电站的量测系统有很大区别,以电子式互感器为电流电压数据采集单元的智能量测系统有着传统量测系统无法比拟的优点,但应用中也遇到了一些问题。在调试过程中,大部分问题的解决都必须以适应智能化、信息化的方式去思考、去剖析。本文主要介绍了智能量测系统在智能变电站的应用,研究了电子式互感器及数字电能表的现场校验技术,最后结合实际经验分析了现场检定过程中可能遇到的问题,并提出解决方案。%  Intelligent measurement system of the smart substation is very different from the traditional measurement system of the substation. The system which takes electronic transformers as current and voltage data acquisition unit has incomparable advantages over the traditional measurement systems. But the new system has encountered some problems in the application. This paper introduces the intelligent measurement system to think and parse the most of theproblems with the way of intelligence and information. And it has studied the field verification technology of the electronic transformer and digital energy meter as well. Combining with practical experience, the paper also analyzes the might encountering problems in the field verification process, and proposes solutions.

  12. INDEPENDENT VERIFICATION SURVEY REPORT FOR EXPOSURE UNITS Z2-24, Z2-31, Z2-32, AND Z2-36 IN ZONE 2 OF THE EAST TENNESSEE TECHNOLOGY PARK OAK RIDGE, TENNESSEE

    Energy Technology Data Exchange (ETDEWEB)

    None

    2013-10-10

    The U.S. Department of Energy (DOE) Oak Ridge Office of Environmental Management selected Oak Ridge Associated Universities (ORAU), through the Oak Ridge Institute for Science and Education (ORISE) contract, to perform independent verification (IV) at Zone 2 of the East Tennessee Technology Park (ETTP) in Oak Ridge, Tennessee. ORAU has concluded IV surveys, per the project-specific plan (PSP) (ORAU 2013a) covering exposure units (EUs) Z2-24, -31, -32, and -36. The objective of this effort was to verify the following. • Target EUs comply with requirements in the Zone 2 Record of Decision (ROD) (DOE 2005), as implemented by using the dynamic verification strategy presented in the dynamic work plan (DWP) (BJC 2007) • Commitments in the DWP were adequately implemented, as verified via IV surveys and soil sampling The Zone 2 ROD establishes maximum remediation level (RLmax) values and average RL (RLavg) values for the primary contaminants of concern (COCs) U-234, U-235, U-238, Cs-137, Np-237, Ra-226, Th-232, arsenic, mercury, and polychlorinated biphenyls (PCBs). Table 1.1 lists Zone 2 COCs with associated RLs. Additional radiological and chemical contaminants were also identified during past characterization and monitoring actions, though the ROD does not present RLs for these potential contaminants. IV activities focused on the identification and quantification of ROD-specific COCs in surface soils, but also generated data for other analytes to support future decisions. ORAU personnel also reviewed EU-specific phased construction completion reports (PCCRs) to focus IV activities and identify potential judgmental sample locations, if any.

  13. Formal Verification, Engineering and Business Value

    Directory of Open Access Journals (Sweden)

    Ralf Huuck

    2012-12-01

    Full Text Available How to apply automated verification technology such as model checking and static program analysis to millions of lines of embedded C/C++ code? How to package this technology in a way that it can be used by software developers and engineers, who might have no background in formal verification? And how to convince business managers to actually pay for such a software? This work addresses a number of those questions. Based on our own experience on developing and distributing the Goanna source code analyzer for detecting software bugs and security vulnerabilities in C/C++ code, we explain the underlying technology of model checking, static analysis and SMT solving, steps involved in creating industrial-proof tools.

  14. The technology of preparing green coating by conducting micro-arc oxidation on AZ91D magnesium alloy

    Directory of Open Access Journals (Sweden)

    Wang Sheng

    2016-12-01

    Full Text Available Micro-arc oxidation was applied to AZ91D magnesium alloy by taking K2Cr2O7 as the colouring salt in the silicate system. It was shown that the green coating obtained through performing micro-arc oxidation on magnesium alloy consisted of Mg, Mg2SiO4, MgO, and MgCr2O4 based on analysis of X-ray diffraction (XRD, and scanning electron microscopy (SEM. Among which, MgCr2O4 was the colouring salt; there were something in the lamellar, pit, and convex forms found on the surface of the coating. The coating consisted of a porous, and a compact, layer from the outside to the inside. As demonstrated, the colour of the coating depended on the K2Cr2O7 concentration: it became gradually deeper with the addition of K2Cr2O7 and the increasing micro-arc oxidation time. The corrosion resistance and hardness of the green coating were greater than that of the matrix.

  15. Verification of the Usefulness of the Trimble Rtx Extended Satellite Technology with the Xfill Function in the Local Network Implementing Rtk Measurements

    Science.gov (United States)

    Siejka, Zbigniew

    2014-12-01

    The paper presents the method of satellite measurements, which gives users the ability of GNSS continuous precise positioning in real time, even in the case of short interruptions in receiving the correction of the local ground system of measurements support. The proposed method is a combination of two satellite positioning technologies RTN GNSS and RTX Extended. In technology RTX Extended the xFill function was used for precise positioning in real time and in the local reference system. This function provides the ability to perform measurement without the need for constant communication with the ground support satellite system. Test measurements were performed on a test basis located in Krakow, and RTN GNSS positioning was done based on the national network of reference stations of the ASGEUPOS. The solution allows for short (up to 5 minutes) interruptions in radio or internet communication. When the primary stream of RTN correction is not available, then the global corrections Trimble xFill broadcasted by satellite are used. The new technology uses in the real-time data from the global network of tracking stations and contributes significantly to improving the quality and efficiency of surveying works. At present according to the authors, technology Trimble CenterPoint RTX can guarantee repeatability of measurements not worse than 3.8 cm (Trimble Survey Division, 2012). In the paper the comparative analysis of measurement results between the two technologies was performed: RTN carried out in the classic way, which was based on the corrections of the terrestrial local network of the Polish system of active geodetic network (ASG-EUPOS) and RTK xFill technology. The results were related to the data of test network, established as error free. The research gave satisfactory results and confirmed the great potential of the use of the new technology in the geodetic work realization. By combining these two technologies of GNSS surveying the user can greatly improve the

  16. Preliminary coating design and coating developments for ATHENA

    DEFF Research Database (Denmark)

    Jakobsen, Anders Clemen; Ferreira, Desiree Della Monica; Christensen, Finn Erland

    2011-01-01

    We present initial novel coating design for ATHENA. We make use of both simple bilayer coatings of Ir and B4C and more complex constant period multilayer coatings to enhance the effective area and cover the energy range from 0.1 to 10 keV. We also present the coating technology used for these des......We present initial novel coating design for ATHENA. We make use of both simple bilayer coatings of Ir and B4C and more complex constant period multilayer coatings to enhance the effective area and cover the energy range from 0.1 to 10 keV. We also present the coating technology used...

  17. HOW THE ROCKY FLATS ENVIRONMENTAL TECHNOLOGY SITE DEVELOPED A NEW WASTE PACKAGE USING A POLYUREA COATING THAT IS SAFELY AND ECONOMICALLY ELIMINATING SIZE REDUCTION OF LARGE ITEMS

    Energy Technology Data Exchange (ETDEWEB)

    Dorr, Kent A.; Hogue, Richard S.; Kimokeo, Margaret K.

    2003-02-27

    One of the major challenges involved in closing the Rocky Flats Environmental Technology Site (RFETS) is the disposal of extremely large pieces of contaminated production equipment and building debris. Past practice has been to size reduce the equipment into pieces small enough to fit into approved, standard waste containers. Size reducing this equipment is extremely expensive, and exposes workers to high-risk tasks, including significant industrial, chemical, and radiological hazards. RFETS has developed a waste package using a Polyurea coating for shipping large contaminated objects. The cost and schedule savings have been significant.

  18. Wind gust warning verification

    Science.gov (United States)

    Primo, Cristina

    2016-07-01

    Operational meteorological centres around the world increasingly include warnings as one of their regular forecast products. Warnings are issued to warn the public about extreme weather situations that might occur leading to damages and losses. In forecasting these extreme events, meteorological centres help their potential users in preventing the damage or losses they might suffer. However, verifying these warnings requires specific methods. This is due not only to the fact that they happen rarely, but also because a new temporal dimension is added when defining a warning, namely the time window of the forecasted event. This paper analyses the issues that might appear when dealing with warning verification. It also proposes some new verification approaches that can be applied to wind warnings. These new techniques are later applied to a real life example, the verification of wind gust warnings at the German Meteorological Centre ("Deutscher Wetterdienst"). Finally, the results obtained from the latter are discussed.

  19. Energy Saving Melting and Revert Reduction Technology (E-SMARRT): Development of Surface Engineered Coating Systems for Aluminum Pressure Die Casting Dies: Towards a 'Smart' Die Coating

    Energy Technology Data Exchange (ETDEWEB)

    Dr. John J. Moore; Dr. Jianliang Lin,

    2012-07-31

    The main objective of this research program was to design and develop an optimal coating system that extends die life by minimizing premature die failure. In high-pressure aluminum die-casting, the die, core pins and inserts must withstand severe processing conditions. Many of the dies and tools in the industry are being coated to improve wear-resistance and decrease down-time for maintenance. However, thermal fatigue in metal itself can still be a major problem, especially since it often leads to catastrophic failure (i.e. die breakage) as opposed to a wear-based failure (parts begin to go out of tolerance). Tooling costs remain the largest portion of production costs for many of these parts, so the ability prevent catastrophic failures would be transformative for the manufacturing industry.The technology offers energy savings through reduced energy use in the die casting process from several factors, including increased life of the tools and dies, reuse of the dies and die components, reduction/elimination of lubricants, and reduced machine down time, and reduction of Al solder sticking on the die. The use of the optimized die coating system will also reduce environmental wastes and scrap parts. Current (2012) annual energy saving estimates, based on initial dissemination to the casting industry in 2010 and market penetration of 80% by 2020, is 3.1 trillion BTU's/year. The average annual estimate of CO2 reduction per year through 2020 is 0.63 Million Metric Tons of Carbon Equivalent (MM TCE).

  20. Control of p-type and n-type thermoelectric properties of bismuth telluride thin films by combinatorial sputter coating technology

    Science.gov (United States)

    Goto, Masahiro; Sasaki, Michiko; Xu, Yibin; Zhan, Tianzhuo; Isoda, Yukihiro; Shinohara, Yoshikazu

    2017-06-01

    p- and n-type bismuth telluride thin films have been synthesized by using a combinatorial sputter coating system (COSCOS). The crystal structure and crystal preferred orientation of the thin films were changed by controlling the coating condition of the radio frequency (RF) power during the sputter coating. As a result, the p- and n-type films and their dimensionless figure of merit (ZT) were optimized by the technique. The properties of the thin films such as the crystal structure, crystal preferred orientation, material composition and surface morphology were analyzed by X-ray diffraction, energy-dispersive X-ray spectroscopy and atomic force microscopy. Also, the thermoelectric properties of the Seebeck coefficient, electrical conductivity and thermal conductivity were measured. ZT for n- and p-type bismuth telluride thin films was found to be 0.27 and 0.40 at RF powers of 90 and 120 W, respectively. The proposed technology can be used to fabricate thermoelectric p-n modules of bismuth telluride without any doping process.

  1. Verification and validation benchmarks.

    Energy Technology Data Exchange (ETDEWEB)

    Oberkampf, William Louis; Trucano, Timothy Guy

    2007-02-01

    Verification and validation (V&V) are the primary means to assess the accuracy and reliability of computational simulations. V&V methods and procedures have fundamentally improved the credibility of simulations in several high-consequence fields, such as nuclear reactor safety, underground nuclear waste storage, and nuclear weapon safety. Although the terminology is not uniform across engineering disciplines, code verification deals with assessing the reliability of the software coding, and solution verification deals with assessing the numerical accuracy of the solution to a computational model. Validation addresses the physics modeling accuracy of a computational simulation by comparing the computational results with experimental data. Code verification benchmarks and validation benchmarks have been constructed for a number of years in every field of computational simulation. However, no comprehensive guidelines have been proposed for the construction and use of V&V benchmarks. For example, the field of nuclear reactor safety has not focused on code verification benchmarks, but it has placed great emphasis on developing validation benchmarks. Many of these validation benchmarks are closely related to the operations of actual reactors at near-safety-critical conditions, as opposed to being more fundamental-physics benchmarks. This paper presents recommendations for the effective design and use of code verification benchmarks based on manufactured solutions, classical analytical solutions, and highly accurate numerical solutions. In addition, this paper presents recommendations for the design and use of validation benchmarks, highlighting the careful design of building-block experiments, the estimation of experimental measurement uncertainty for both inputs and outputs to the code, validation metrics, and the role of model calibration in validation. It is argued that the understanding of predictive capability of a computational model is built on the level of

  2. Requirement Assurance: A Verification Process

    Science.gov (United States)

    Alexander, Michael G.

    2011-01-01

    Requirement Assurance is an act of requirement verification which assures the stakeholder or customer that a product requirement has produced its "as realized product" and has been verified with conclusive evidence. Product requirement verification answers the question, "did the product meet the stated specification, performance, or design documentation?". In order to ensure the system was built correctly, the practicing system engineer must verify each product requirement using verification methods of inspection, analysis, demonstration, or test. The products of these methods are the "verification artifacts" or "closure artifacts" which are the objective evidence needed to prove the product requirements meet the verification success criteria. Institutional direction is given to the System Engineer in NPR 7123.1A NASA Systems Engineering Processes and Requirements with regards to the requirement verification process. In response, the verification methodology offered in this report meets both the institutional process and requirement verification best practices.

  3. Open verification methodology cookbook

    CERN Document Server

    Glasser, Mark

    2009-01-01

    Functional verification is an art as much as a science. It requires not only creativity and cunning, but also a clear methodology to approach the problem. The Open Verification Methodology (OVM) is a leading-edge methodology for verifying designs at multiple levels of abstraction. It brings together ideas from electrical, systems, and software engineering to provide a complete methodology for verifying large scale System-on-Chip (SoC) designs. OVM defines an approach for developing testbench architectures so they are modular, configurable, and reusable. This book is designed to help both novic

  4. 高温防腐涂料与热障防腐涂层技术的研究进展%Progress in Study on Technology of High Temperature Resistant and Thermal Barrier Anti-corrosion Coatings

    Institute of Scientific and Technical Information of China (English)

    张春华; 李克军; 李安学; 李春启; 左玉帮

    2011-01-01

    综述了国内外耐高温防腐有机、无机和有机-无机复合涂料和热障防腐涂层技术的研究与应用的新进展,介绍了有机硅树脂、有机氟树脂、无机硅酸盐基涂料、无机磷酸盐基涂料、陶瓷涂层和搪瓷涂层的发展现状和前景.%The progresses in application and study on technology of high temperature resistant anti-corrosion organic, inorganic and organic-inorganic composite coatings and thermal barrier anti-corrosion coatings are summarized. The development status and prospects of organic silicon resin, organic fluororesin, inorganic silicate based coating, inorganic phosphate based coating, ceramic and enamel coatings are introduced.

  5. Process Document for the joint ETV/NOWATECH verification of the Sorbisense GSW40 passive sampler

    Science.gov (United States)

    Nordic Water Technology Verification Center’s (NOWATECH) DHI Water Monitoring Center (DHI WMC), a pilot Environmental Technology Verification (ETV) program in the European Union, and the United States Environmental Protection Agency ETV (US EPA ETV) program’s Advanced Monitoring ...

  6. Environmental Technology Verification Report and Statement for Baghouse Filtration Products, W. L. Gore & Associates, Inc. 5117 High Durability PPS Laminate Filtration Media (Tested March-April 2012)

    Science.gov (United States)

    Baghouses are air pollution control devices used to control particulate emissions from stationary sources and are among the technologies evaluated by the APCT Center. Baghouses and their accompanying filter media have long been one of the leading particulate control techniques fo...

  7. Environmental Technology Verification Report and Statement for Baghouse Filtration Products, W. L. Gore & Associates, Inc. 5117 High Durability PPS Laminate Filtration Media (Tested March-April 2012)

    Science.gov (United States)

    Baghouses are air pollution control devices used to control particulate emissions from stationary sources and are among the technologies evaluated by the APCT Center. Baghouses and their accompanying filter media have long been one of the leading particulate control techniques fo...

  8. Quantitative Verification in Practice

    NARCIS (Netherlands)

    Haverkort, Boudewijn R.; Katoen, Joost-Pieter; Larsen, Kim G.

    2010-01-01

    Soon after the birth of model checking, the first theoretical achievements have been reported on the automated verification of quanti- tative system aspects such as discrete probabilities and continuous time. These theories have been extended in various dimensions, such as con- tinuous probabilities

  9. Component Verification and Certification in NASA Missions

    Science.gov (United States)

    Giannakopoulou, Dimitra; Penix, John; Norvig, Peter (Technical Monitor)

    2001-01-01

    Software development for NASA missions is a particularly challenging task. Missions are extremely ambitious scientifically, have very strict time frames, and must be accomplished with a maximum degree of reliability. Verification technologies must therefore be pushed far beyond their current capabilities. Moreover, reuse and adaptation of software architectures and components must be incorporated in software development within and across missions. This paper discusses NASA applications that we are currently investigating from these perspectives.

  10. Proceedings of the Defense Nuclear Agency Conference on Arms Control and Verification Technology (ACT) Held in Williamsburg, Virginia on 1-4 June 1992

    Science.gov (United States)

    1993-12-01

    response (IPR) methodology is a measure of the width of the magnitude intensity of the SAR image of a trihedral corner reflector made of radar -reflecting...nature of imaging radars , where there is not an easy way of assuring that the trihedral corner reflector will always be located exactly in the middle...sufficient nuclear expertise remain to inform and staff the IAEA process?17 - If cruise missiles, technologies to reduce radar cross sections , ad

  11. Accuracy Verification of Magnetic Resonance Imaging (MRI Technology for Lower-Limb Prosthetic Research: Utilising Animal Soft Tissue Specimen and Common Socket Casting Materials

    Directory of Open Access Journals (Sweden)

    Mohammad Reza Safari

    2012-01-01

    Full Text Available Lower limb prosthetic socket shape and volume consistency can be quantified using MRI technology. Additionally, MRI images of the residual limb could be used as an input data for CAD-CAM technology and finite element studies. However, the accuracy of MRI when socket casting materials are used has to be defined. A number of six, 46 mm thick, cross-sections of an animal leg were used. Three specimens were wrapped with Plaster of Paris (POP and the other three with commercially available silicone interface liner. Data was obtained by utilising MRI technology and then the segmented images compared to corresponding calliper measurement, photographic imaging, and water suspension techniques. The MRI measurement results were strongly correlated with actual diameter, surface area, and volume measurements. The results show that the selected scanning parameters and the semiautomatic segmentation method are adequate enough, considering the limit of clinical meaningful shape and volume fluctuation, for residual limb volume and the cross-sectional surface area measurements.

  12. CMOS工艺射频功率放大器的实现与验证%Realization and verification of the CMOS technology RF power amplifier

    Institute of Scientific and Technical Information of China (English)

    谢君

    2011-01-01

    RF power amplifiers are key components in wireless devices, CaAs technology is widely used in the design and manufacture of RF power amplifier. But the CMOS technology has the very big superiority in the production maturity and the cost, this paper focuses on the problems that using CMOS technology to do the RF power amplifier, introduces the world's first mass product CMOS power amplifier and the special techniques used. Using a mature handset product, it replaces this power amplifier and the peripheral components, and finally carries on the contrast test with the original product.%射频功率放大器是无线设备的关键器件,GaAs工艺被广泛使用在射频功放的设计制造上.而CMOS工艺在生产成熟度和成本上有很大优势,主要关注用CMOS工艺来做射频功放的问题,介绍世界上第一颗量产的CMOS功放及其所使用的特殊技术.利用一款成熟的手机产品,替换这颗功放及外围器件,最后与原产品进行对比测试.

  13. Accuracy verification of magnetic resonance imaging (MRI) technology for lower-limb prosthetic research: utilising animal soft tissue specimen and common socket casting materials.

    Science.gov (United States)

    Safari, Mohammad Reza; Rowe, Philip; Buis, Arjan

    2012-01-01

    Lower limb prosthetic socket shape and volume consistency can be quantified using MRI technology. Additionally, MRI images of the residual limb could be used as an input data for CAD-CAM technology and finite element studies. However, the accuracy of MRI when socket casting materials are used has to be defined. A number of six, 46 mm thick, cross-sections of an animal leg were used. Three specimens were wrapped with Plaster of Paris (POP) and the other three with commercially available silicone interface liner. Data was obtained by utilising MRI technology and then the segmented images compared to corresponding calliper measurement, photographic imaging, and water suspension techniques. The MRI measurement results were strongly correlated with actual diameter, surface area, and volume measurements. The results show that the selected scanning parameters and the semiautomatic segmentation method are adequate enough, considering the limit of clinical meaningful shape and volume fluctuation, for residual limb volume and the cross-sectional surface area measurements.

  14. Analysis of failed and nickel-coated 3093 beam clamp components at the East Tennessee Technology Park (ETTP).

    Energy Technology Data Exchange (ETDEWEB)

    Singh, D.; Pappacena, K.; Gaviria, J.; Burtsteva, T.; Nuclear Engineering Division

    2010-10-11

    was also explored as a failure mechanism. Corroded and failed yoke samples had hydrogen concentrations of 20-60 ppm. However, the hydrogen content reduced to 4-11 ppm (similar to baseline as-received yoke samples) when the corrosion products were polished off. The hydrogen content in the scraped off corrosion product powders was >7000 ppm. These results indicate that hydrogen is primarily present in the corrosion products and not in the underlying steel. Rockwell hardness values on the corroded yoke and D-rings were R{sub c} {approx} 41-46. It was recommended to the beam clamp manufacturer that the beam clamp components be annealed to reduce the hardness values so that they are less susceptible to brittle failure. Upon annealing, hardness values of the beam clamp components reduced to R{sub c} {approx} 25. Several strategies were recommended and put in place to mitigate failure of the beam clamp components: (a) maintain hardness levels of both yokes and D-rings at R{sub c} < 35, (b) coat the yoke and D-rings with a dual coating of nickel (with 10% phosphorus) to delay corrosion and aluminum to prevent galvanic corrosion since it is more anodic to zinc, and (c) optimize coating thicknesses for nickel and aluminum while maintaining the physical integrity of the coatings. Evaluation of the Al- and Ni-coated yoke and D-ring specimens indicated they appear to have met the recommendations. Average hardness values of the dual-coated yokes were R{sub c} {approx} 25-35. Hardness values of dual-coated D-ring were R{sub c} {approx} 32. Measured average coating thicknesses for the aluminum and nickel coatings for yoke samples were 22 {micro}m (0.9 mils) and 80 {micro}m (3 mils), respectively. The D-rings also showed similar coating thicknesses. Microscopic examination showed that the aluminum coating was well bonded to the underlying nickel coating. Some observed damage was believed to be an artifact of the cutting-and-polishing steps during sample preparation for microscopy.

  15. TEST/QA PLAN FOR THE VERIFICATION TESTING OF ALTERNATIVES OR REFORMULATED LIQUID FUELS, FUEL ADDITIVES, FUEL EMULSONS, AND LUBRICANTS FOR HIGHWAY AND NONROAD USE HEAVY DUTY DIESEL ENGINES AND LIGHT DUTY GASOLINE ENGINES AND VEHICLES

    Science.gov (United States)

    The U.S. Environmental Protection Agency established the Environmental Technology Verification Program to accelerate the development and commercialization of improved environmental technology through third party verification and reporting of product performance. Research Triangl...

  16. 超硬纳微米 PVD 涂层技术在模具领域的发展%Development of Superhard Nano Micron PVD Coating Technology in the Field of Mold

    Institute of Scientific and Technical Information of China (English)

    张而耕; 朱州; 张体波

    2014-01-01

    介绍了 PVD 涂层技术的分类,综述了 PVD 涂层技术在冲压/成型、挤压、拉拔、塑料、铝合金等模具应用领域的研究进展。展望了随着 PVD 涂层技术的快速发展,其在模具领域的应用将会更加广泛。%This paper introduced the classification of PVD coating technology, reviewed the progress of research on application of PVD coating technology in the field of stamping/ molding, extrusion, drawing, plastic, and aluminum alloy mold and prospected the future of rapid development of PVD coating technology which will be more widely applied in the field of molding.

  17. Comments for A Conference on Verification in the 21st Century

    Energy Technology Data Exchange (ETDEWEB)

    Doyle, James E. [Los Alamos National Laboratory

    2012-06-12

    The author offers 5 points for the discussion of Verification and Technology: (1) Experience with the implementation of arms limitation and arms reduction agreements confirms that technology alone has never been relied upon to provide effective verification. (2) The historical practice of verification of arms control treaties between Cold War rivals may constrain the cooperative and innovative use of technology for transparency, veification and confidence building in the future. (3) An area that has been identified by many, including the US State Department and NNSA as being rich for exploration for potential uses of technology for transparency and verification is information and communications technology (ICT). This includes social media, crowd-sourcing, the internet of things, and the concept of societal verification, but there are issues. (4) On the issue of the extent to which verification technologies are keeping pace with the demands of future protocols and agrements I think the more direct question is ''are they effective in supporting the objectives of the treaty or agreement?'' In this regard it is important to acknowledge that there is a verification grand challenge at our doorstep. That is ''how does one verify limitations on nuclear warheads in national stockpiles?'' (5) Finally, while recognizing the daunting political and security challenges of such an approach, multilateral engagement and cooperation at the conceptual and technical levels provides benefits for addressing future verification challenges.

  18. 测井数据库数据叠加对比验证技术%Logging Database Data Superimposed Contrast Verification Technology

    Institute of Scientific and Technical Information of China (English)

    姜泽军

    2011-01-01

    "Exploration and production technology data management system(A1)"part of China's information technology projects of oil upstream of four subsystems of the two,both to meet its objectives and tasks in construction information management needs of the oil,but also to bring the oil rapid development and considerable economic benefits.Article describes the process of building A1 logging in the main library before loading and after loading data quality control technical measures.%“勘探与生产技术数据管理系统(A1)”属于中国石油的信息化建设项目上游领域四个子系统之二,其目标任务建设既能满足中石油信息管理需求,又能为中石油带来高速发展和可观经济效益。文章阐述A1测井主库建设过程中加栽前和加栽后数据质量的控制方面技术措施。

  19. Spherical coverage verification

    CERN Document Server

    Petkovic, Marko D; Latecki, Longin Jan

    2011-01-01

    We consider the problem of covering hypersphere by a set of spherical hypercaps. This sort of problem has numerous practical applications such as error correcting codes and reverse k-nearest neighbor problem. Using the reduction of non degenerated concave quadratic programming (QP) problem, we demonstrate that spherical coverage verification is NP hard. We propose a recursive algorithm based on reducing the problem to several lower dimension subproblems. We test the performance of the proposed algorithm on a number of generated constellations. We demonstrate that the proposed algorithm, in spite of its exponential worst-case complexity, is applicable in practice. In contrast, our results indicate that spherical coverage verification using QP solvers that utilize heuristics, due to numerical instability, may produce false positives.

  20. Distorted Fingerprint Verification System

    Directory of Open Access Journals (Sweden)

    Divya KARTHIKAESHWARAN

    2011-01-01

    Full Text Available Fingerprint verification is one of the most reliable personal identification methods. Fingerprint matching is affected by non-linear distortion introduced in fingerprint impression during the image acquisition process. This non-linear deformation changes both the position and orientation of minutiae. The proposed system operates in three stages: alignment based fingerprint matching, fuzzy clustering and classifier framework. First, an enhanced input fingerprint image has been aligned with the template fingerprint image and matching score is computed. To improve the performance of the system, a fuzzy clustering based on distance and density has been used to cluster the feature set obtained from the fingerprint matcher. Finally a classifier framework has been developed and found that cost sensitive classifier produces better results. The system has been evaluated on fingerprint database and the experimental result shows that system produces a verification rate of 96%. This system plays an important role in forensic and civilian applications.

  1. Robust verification analysis

    Energy Technology Data Exchange (ETDEWEB)

    Rider, William, E-mail: wjrider@sandia.gov [Sandia National Laboratories, Center for Computing Research, Albuquerque, NM 87185 (United States); Witkowski, Walt [Sandia National Laboratories, Verification and Validation, Uncertainty Quantification, Credibility Processes Department, Engineering Sciences Center, Albuquerque, NM 87185 (United States); Kamm, James R. [Los Alamos National Laboratory, Methods and Algorithms Group, Computational Physics Division, Los Alamos, NM 87545 (United States); Wildey, Tim [Sandia National Laboratories, Center for Computing Research, Albuquerque, NM 87185 (United States)

    2016-02-15

    We introduce a new methodology for inferring the accuracy of computational simulations through the practice of solution verification. We demonstrate this methodology on examples from computational heat transfer, fluid dynamics and radiation transport. Our methodology is suited to both well- and ill-behaved sequences of simulations. Our approach to the analysis of these sequences of simulations incorporates expert judgment into the process directly via a flexible optimization framework, and the application of robust statistics. The expert judgment is systematically applied as constraints to the analysis, and together with the robust statistics guards against over-emphasis on anomalous analysis results. We have named our methodology Robust Verification. Our methodology is based on utilizing multiple constrained optimization problems to solve the verification model in a manner that varies the analysis' underlying assumptions. Constraints applied in the analysis can include expert judgment regarding convergence rates (bounds and expectations) as well as bounding values for physical quantities (e.g., positivity of energy or density). This approach then produces a number of error models, which are then analyzed through robust statistical techniques (median instead of mean statistics). This provides self-contained, data and expert informed error estimation including uncertainties for both the solution itself and order of convergence. Our method produces high quality results for the well-behaved cases relatively consistent with existing practice. The methodology can also produce reliable results for ill-behaved circumstances predicated on appropriate expert judgment. We demonstrate the method and compare the results with standard approaches used for both code and solution verification on well-behaved and ill-behaved simulations.

  2. Methods of Software Verification

    Directory of Open Access Journals (Sweden)

    R. E. Gurin

    2015-01-01

    Full Text Available This article is devoted to the problem of software verification (SW. Methods of software verification designed to check the software for compliance with the stated requirements such as correctness, system security and system adaptability to small changes in the environment, portability and compatibility, etc. These are various methods both by the operation process and by the way of achieving result. The article describes the static and dynamic methods of software verification and paid attention to the method of symbolic execution. In its review of static analysis are discussed and described the deductive method, and methods for testing the model. A relevant issue of the pros and cons of a particular method is emphasized. The article considers classification of test techniques for each method. In this paper we present and analyze the characteristics and mechanisms of the static analysis of dependencies, as well as their views, which can reduce the number of false positives in situations where the current state of the program combines two or more states obtained both in different paths of execution and in working with multiple object values. Dependences connect various types of software objects: single variables, the elements of composite variables (structure fields, array elements, the size of the heap areas, the length of lines, the number of initialized array elements in the verification code using static methods. The article pays attention to the identification of dependencies within the framework of the abstract interpretation, as well as gives an overview and analysis of the inference tools.Methods of dynamic analysis such as testing, monitoring and profiling are presented and analyzed. Also some kinds of tools are considered which can be applied to the software when using the methods of dynamic analysis. Based on the work a conclusion is drawn, which describes the most relevant problems of analysis techniques, methods of their solutions and

  3. Development of Zn-Al-Cu coatings by hot dip coated technology: preparation and characterization; Obtencion y caracterizacion de recubrimientos Zn-Al-Cu por inmersion en caliente sobre aceros de bajo carbono

    Energy Technology Data Exchange (ETDEWEB)

    Cervantes, J.; Barba, A.; Hernandez, M. A.; Salas, J.; Espinoza, J. L.; Denova, C.; Torres-Villasenor, G.; Conde, A.; Covelo, A.; Valdez, R.

    2013-07-01

    In the present study, research concerning Zn-Al-Cu coatings on low carbon steels has been conducted in order to characterize different properties obtained by a hot-dip coated process. The results include preparation procedure as well as the processing parameters of the coatings. The obtained coatings were subjected to a cold rolling process followed by an anneal heat treatment at different temperatures and under different time conditions. The structural characteristics of coatings have been investigated by optical and electron microscopy. The mechanical properties were obtained by using micro-hardness testing, deep drawing and wear tests whereas chemical analyses were carried out using the SEM/EDAX microprobe. The corrosion properties were achieved by using a salt spray fog chamber and potentiodynamic tests in a saline solution. The coatings are resistant to corrosion and wear in the presence of sodium chloride, therefore, the coatings could be an attractive alternative for application in coastal areas, and adequate wear adhesive resistance. (Author)

  4. Chromate-free Passivation Technology for Electrodeposited Nickel Coating%电沉积镀镍层的无铬钝化工艺

    Institute of Scientific and Technical Information of China (English)

    堵艳艳; 潘勇; 周兆锋; 李玮; 惠建科

    2012-01-01

    采用正交试验法筛选了一种以植酸、钼酸钠和缓蚀添加剂为基本组成的无铬钝化液。通过电化学阻抗谱测试,确定了最佳成膜时间;通过5%CusO4。点滴试验、10%NaCl浸泡试验和极化曲线测试,对电沉积镀镍层无铬钝化后的耐蚀性能进行了研究。结果表明,采用本无铬钝化工艺后,镀镍层耐蚀性能良好。%In order to improve the corrosion resistance of electrodeposited nickel coating and subsititute the carcinogenic hexavalent chromium passivation, a new chromate free passivation solution was screened out by means of orthogonal analysis experiments. Fhe solution was composed of phytic acid, sodium molybdate and corrosion inhibitor. The optimal time for conversion film formation was determined by electrochemical impedance spectroscopy. The corrosion resistant properties of electrodeposited nickel coating were studied by dropping corrosion test in 5% CuSO4, immersion test in 10% NaC1 and polarization curves. The results showed that the film passivated by the technology has good anti-corrosion performance.

  5. 聚合物抗渗再生涂料雾封层技术应用%Application of polymer anti-permeability regeneration coating fog seal technology

    Institute of Scientific and Technical Information of China (English)

    秦进远; 丁占锋

    2015-01-01

    基于高低温性能采用SBR和聚烯烃等对基质沥青进行复合改性研制了一种新型聚合物抗渗再生涂料,通过试验段的应用介绍了聚合物抗渗再生涂料雾封层技术,并对雾封前后路面性能指标进行了对比,结果表明:采用该技术雾封后路面抗渗水性能得到了显著提高,同时其抗滑性能满足现行规范要求。%It developed a new type of polymer anti-permeability regeneration coating using SBR and polyolefin composite modification of matrix asphalt based on the high and low temperature performances. Through the application of test section introduced the polymer anti-permeability regeneration coating fog seal technology. It compared the surface performance indexes before and after the fog seal. Results showed that pavement skid resistance performance met the current specification requirements after the fog seal,and improved the anti-permeability of pavement largely.

  6. Hardware/software co-verification platform for EOS design

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Ethernet over SDH/SONET (EOS) is a hotspot in today's data transmission technology for it combines the merits of both Ethernet and SDH/SONET. However, implementing an EOS system on a chip is complex and needs full verifications. This paper introduces our design of Hardware/Software co-verification platform for EOS design. The hardware platform contains a microprocessor board and an FPGA (Field Programmable Gate Array)-based verification board, and the corresponding software includes test benches running in FPGAs, controlling programs for the microprocessor and a console program with GUI (Graphical User Interface) interface for configuration, management and supervision. The design is cost-effective and has been successfully employed to verify several IP (Intellectual Property) blocks of our EOS chip. Moreover, it is flexible and can be applied as a general-purpose verification platform.

  7. Systematic study of source mask optimization and verification flows

    Science.gov (United States)

    Ben, Yu; Latypov, Azat; Chua, Gek Soon; Zou, Yi

    2012-06-01

    Source mask optimization (SMO) emerged as powerful resolution enhancement technique (RET) for advanced technology nodes. However, there is a plethora of flow and verification metrics in the field, confounding the end user of the technique. Systemic study of different flows and the possible unification thereof is missing. This contribution is intended to reveal the pros and cons of different SMO approaches and verification metrics, understand the commonality and difference, and provide a generic guideline for RET selection via SMO. The paper discusses 3 different type of variations commonly arise in SMO, namely pattern preparation & selection, availability of relevant OPC recipe for freeform source and finally the metrics used in source verification. Several pattern selection algorithms are compared and advantages of systematic pattern selection algorithms are discussed. In the absence of a full resist model for SMO, alternative SMO flow without full resist model is reviewed. Preferred verification flow with quality metrics of DOF and MEEF is examined.

  8. 指纹识别技术在养老金发放中的应用研究%Studyon Social Secure System Based on Fingerprint Verification Technology

    Institute of Scientific and Technical Information of China (English)

    罗海波

    2011-01-01

    发放养老金优化管理,针对指纹识别技术用于养老金优化管理问题,传统养老金的生存证明获取过程存在造假且效率低的难题,导致大量冒领现象发生.为了提高养老金发放管理效率,防止冒领现象的发生,提出一种基于指纹识别技术的养老金发验证方法.首先通过指纹采集终端对退休人员的指纹进行采集,对获得的指纹图像进行分割、增强、二值化及细化预处理,然后提取有效特征,将特征通过网络传送到服务器中,最后将获得的指纹信息与指纹特征库中的指纹进行匹配,通过匹配的结果来判断是不是存在这样的指纹.采用识别方法进行了仿真,实验结果表明,平均正确率为 88%,验识时间仅为2s,是一种高效和准确的验证方法,能为养老金优化管理提供参考.%Study on the fingerprint identification technology in pension. Because the traditional pension survival certificate is of low efficiency and inconvenience to retired workersmay, and can lead to fraud phenomenon. In order to improve the efficiency of management, prevent pension to be false received, this paper puts forward a method based on fingerprint identification technology validation. The fingerprint acquisition terminal collects fingerprint images which are segmented, enhanced, binarized and refined, then, features are extracted effectively and transmitted to the server through the network. Through the fingerprint characteristics of fingerprint identification and matching, the legitimate fingerprints are confirmed. Finally, the results of simulation experiments show that the method is correct, the average accuracy is 88%, and the general check-up time is 2s. It can meet the requirements for actual application.

  9. Continuous verification using multimodal biometrics.

    Science.gov (United States)

    Sim, Terence; Zhang, Sheng; Janakiraman, Rajkumar; Kumar, Sandeep

    2007-04-01

    Conventional verification systems, such as those controlling access to a secure room, do not usually require the user to reauthenticate himself for continued access to the protected resource. This may not be sufficient for high-security environments in which the protected resource needs to be continuously monitored for unauthorized use. In such cases, continuous verification is needed. In this paper, we present the theory, architecture, implementation, and performance of a multimodal biometrics verification system that continuously verifies the presence of a logged-in user. Two modalities are currently used--face and fingerprint--but our theory can be readily extended to include more modalities. We show that continuous verification imposes additional requirements on multimodal fusion when compared to conventional verification systems. We also argue that the usual performance metrics of false accept and false reject rates are insufficient yardsticks for continuous verification and propose new metrics against which we benchmark our system.

  10. Application of a Coated Film Catalyst Layer Model to a High Temperature Polymer Electrolyte Membrane Fuel Cell with Low Catalyst Loading Produced by Reactive Spray Deposition Technology

    Directory of Open Access Journals (Sweden)

    Timothy D. Myles

    2015-10-01

    Full Text Available In this study, a semi-empirical model is presented that correlates to previously obtained experimental overpotential data for a high temperature polymer electrolyte membrane fuel cell (HT-PEMFC. The goal is to reinforce the understanding of the performance of the cell from a modeling perspective. The HT-PEMFC membrane electrode assemblies (MEAs were constructed utilizing an 85 wt. % phosphoric acid doped Advent TPS® membranes for the electrolyte and gas diffusion electrodes (GDEs manufactured by Reactive Spray Deposition Technology (RSDT. MEAs with varying ratios of PTFE binder to carbon support material (I/C ratio were manufactured and their performance at various operating temperatures was recorded. The semi-empirical model derivation was based on the coated film catalyst layer approach and was calibrated to the experimental data by a least squares method. The behavior of important physical parameters as a function of I/C ratio and operating temperature were explored.

  11. CTBT integrated verification system evaluation model supplement

    Energy Technology Data Exchange (ETDEWEB)

    EDENBURN,MICHAEL W.; BUNTING,MARCUS; PAYNE JR.,ARTHUR C.; TROST,LAWRENCE C.

    2000-03-02

    Sandia National Laboratories has developed a computer based model called IVSEM (Integrated Verification System Evaluation Model) to estimate the performance of a nuclear detonation monitoring system. The IVSEM project was initiated in June 1994, by Sandia's Monitoring Systems and Technology Center and has been funded by the U.S. Department of Energy's Office of Nonproliferation and National Security (DOE/NN). IVSEM is a simple, ''top-level,'' modeling tool which estimates the performance of a Comprehensive Nuclear Test Ban Treaty (CTBT) monitoring system and can help explore the impact of various sensor system concepts and technology advancements on CTBT monitoring. One of IVSEM's unique features is that it integrates results from the various CTBT sensor technologies (seismic, in sound, radionuclide, and hydroacoustic) and allows the user to investigate synergy among the technologies. Specifically, IVSEM estimates the detection effectiveness (probability of detection), location accuracy, and identification capability of the integrated system and of each technology subsystem individually. The model attempts to accurately estimate the monitoring system's performance at medium interfaces (air-land, air-water) and for some evasive testing methods such as seismic decoupling. The original IVSEM report, CTBT Integrated Verification System Evaluation Model, SAND97-25 18, described version 1.2 of IVSEM. This report describes the changes made to IVSEM version 1.2 and the addition of identification capability estimates that have been incorporated into IVSEM version 2.0.

  12. CTBT integrated verification system evaluation model supplement

    Energy Technology Data Exchange (ETDEWEB)

    EDENBURN,MICHAEL W.; BUNTING,MARCUS; PAYNE JR.,ARTHUR C.; TROST,LAWRENCE C.

    2000-03-02

    Sandia National Laboratories has developed a computer based model called IVSEM (Integrated Verification System Evaluation Model) to estimate the performance of a nuclear detonation monitoring system. The IVSEM project was initiated in June 1994, by Sandia's Monitoring Systems and Technology Center and has been funded by the U.S. Department of Energy's Office of Nonproliferation and National Security (DOE/NN). IVSEM is a simple, ''top-level,'' modeling tool which estimates the performance of a Comprehensive Nuclear Test Ban Treaty (CTBT) monitoring system and can help explore the impact of various sensor system concepts and technology advancements on CTBT monitoring. One of IVSEM's unique features is that it integrates results from the various CTBT sensor technologies (seismic, in sound, radionuclide, and hydroacoustic) and allows the user to investigate synergy among the technologies. Specifically, IVSEM estimates the detection effectiveness (probability of detection), location accuracy, and identification capability of the integrated system and of each technology subsystem individually. The model attempts to accurately estimate the monitoring system's performance at medium interfaces (air-land, air-water) and for some evasive testing methods such as seismic decoupling. The original IVSEM report, CTBT Integrated Verification System Evaluation Model, SAND97-25 18, described version 1.2 of IVSEM. This report describes the changes made to IVSEM version 1.2 and the addition of identification capability estimates that have been incorporated into IVSEM version 2.0.

  13. Systems Approach to Arms Control Verification

    Energy Technology Data Exchange (ETDEWEB)

    Allen, K; Neimeyer, I; Listner, C; Stein, G; Chen, C; Dreicer, M

    2015-05-15

    Using the decades of experience of developing concepts and technologies for verifying bilateral and multilateral arms control agreements, a broad conceptual systems approach is being developed that takes into account varying levels of information and risk. The IAEA has already demonstrated the applicability of a systems approach by implementing safeguards at the State level, with acquisition path analysis as the key element. In order to test whether such an approach could also be implemented for arms control verification, an exercise was conducted in November 2014 at the JRC ITU Ispra. Based on the scenario of a hypothetical treaty between two model nuclear weapons states aimed at capping their nuclear arsenals at existing levels, the goal of this exercise was to explore how to use acquisition path analysis in an arms control context. Our contribution will present the scenario, objectives and results of this exercise, and attempt to define future workshops aimed at further developing verification measures that will deter or detect treaty violations.

  14. Evaluation of Coating Removal and Aggressive Surface Removal Surface Technologies Applied to Concrete Walls, Brick Walls, and Concrete Ceilings

    Energy Technology Data Exchange (ETDEWEB)

    Lagos, L.E.; Ebadian, M.A.

    1997-11-01

    The purpose of this investigation was to test and evaluate innovative and commercially available technologies for the surface decontamination of walls and ceilings. This investigation supports the DOE's objectives of reducing risks to human health and the environment through its restoration projects at FEMP and MEMP. This project was performed at the Hemispheric Center for Environmental Technology (HCET) at Florida International University (FIU), where one innovative and four commercially available decontamination technologies were evaluated under standard, non-nuclear testing conditions. The performance data generated by this project will assist DOE site managers in the selection of the safest, most efficient, and most cost-effective decontamination technologies to accomplish their remediation objectives.

  15. Coating, Titanium Dioxide and Solar Cell

    OpenAIRE

    Yang, Aohan

    2011-01-01

    The objective of this bachelor’s thesis is to get basic ideas about coating and a deep understanding of properties of titanium dioxide pigments as well as their application and performance in solar electricity energy technology. This thesis consists of three main parts, eight chapters. The first part is about basic knowledge of coating and tests of coated paper. Coating pigments are generally introduced in the part. In the second part, coating additives are introduced in details from ...

  16. Composite hydrophilic coating for conditioner aluminum fins

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    To solve the so-called "white rust" and 'water bridge" problems of the aluminum fins for heat exchanger of automobile air conditioner, aimed at nationalizing the art of hydrophilic coating technology, the choice of coating forming and curing materials was investigated. By measuring the water contact angle, SEM surface scanning and ingredients analysis of the coating, optimal parameters and composition are acquired. The coating forming mechanisms of the composition was also expatiated. The coating obtained has good hydrophilic and other properties.

  17. Scalable Techniques for Formal Verification

    CERN Document Server

    Ray, Sandip

    2010-01-01

    This book presents state-of-the-art approaches to formal verification techniques to seamlessly integrate different formal verification methods within a single logical foundation. It should benefit researchers and practitioners looking to get a broad overview of the spectrum of formal verification techniques, as well as approaches to combining such techniques within a single framework. Coverage includes a range of case studies showing how such combination is fruitful in developing a scalable verification methodology for industrial designs. This book outlines both theoretical and practical issue

  18. Survey on Offline Finger Print Verification System

    NARCIS (Netherlands)

    Suman, R.; Kaur, R.

    2012-01-01

    The fingerprint verification, means where "verification" implies a user matching a fingerprint against a single fingerprint associated with the identity that the user claims. Biometrics can be classified into two types Behavioral (signature verification, keystroke dynamics, etc.) And Physiological (

  19. Verification of the thermal design of electronic equipment

    Energy Technology Data Exchange (ETDEWEB)

    Hienonen, R.; Karjalainen, M.; Lankinen, R. [VTT Automation, Espoo (Finland). ProTechno

    1997-12-31

    The project `Verification of the thermal design of electronic equipment` studied the methodology to be followed in the verification of thermal design of electronic equipment. This project forms part of the `Cool Electronics` research programme funded by TEKES, the Finnish Technology Development Centre. This project was carried out jointly by VTT Automation, Lappeenranta University of Technology, Nokia Research Center and ABB Industry Oy VSD-Technology. The thermal design of electronic equipment has a significant impact on the cost, reliability, tolerance to different environments, selection of components and materials, and ergonomics of the product. This report describes the method for verification of thermal design. It assesses the goals set for thermal design, environmental requirements, technical implementation of the design, thermal simulation and modelling, and design qualification testing and the measurements needed. The verification method covers all packaging levels of electronic equipment from the system level to the electronic component level. The method described in this report can be used as part of the quality system of a corporation. The report includes information about the measurement and test methods needed in the verification process. Some measurement methods for the temperature, flow and pressure of air are described. (orig.) Published in Finnish VTT Julkaisuja 824. 22 refs.

  20. Study of space shuttle orbiter system management computer function. Volume 2: Automated performance verification concepts

    Science.gov (United States)

    1975-01-01

    The findings are presented of investigations on concepts and techniques in automated performance verification. The investigations were conducted to provide additional insight into the design methodology and to develop a consolidated technology base from which to analyze performance verification design approaches. Other topics discussed include data smoothing, function selection, flow diagrams, data storage, and shuttle hydraulic systems.

  1. Verification of LHS distributions.

    Energy Technology Data Exchange (ETDEWEB)

    Swiler, Laura Painton

    2006-04-01

    This document provides verification test results for normal, lognormal, and uniform distributions that are used in Sandia's Latin Hypercube Sampling (LHS) software. The purpose of this testing is to verify that the sample values being generated in LHS are distributed according to the desired distribution types. The testing of distribution correctness is done by examining summary statistics, graphical comparisons using quantile-quantile plots, and format statistical tests such as the Chisquare test, the Kolmogorov-Smirnov test, and the Anderson-Darling test. The overall results from the testing indicate that the generation of normal, lognormal, and uniform distributions in LHS is acceptable.

  2. High-level verification

    CERN Document Server

    Lerner, Sorin; Kundu, Sudipta

    2011-01-01

    Given the growing size and heterogeneity of Systems on Chip (SOC), the design process from initial specification to chip fabrication has become increasingly complex. This growing complexity provides incentive for designers to use high-level languages such as C, SystemC, and SystemVerilog for system-level design. While a major goal of these high-level languages is to enable verification at a higher level of abstraction, allowing early exploration of system-level designs, the focus so far for validation purposes has been on traditional testing techniques such as random testing and scenario-based

  3. The Role of science in treaty verification

    Energy Technology Data Exchange (ETDEWEB)

    Gavron, A. I. (Avigdor I.)

    2004-01-01

    Technologically advanced nations are currently applying more science to treaty verification than ever before. Satellites gather a multitude of information relating to proliferation concerns using thermal imaging analysis, nuclear radiation measurements, and optical and radio frequency signals detection. Ground stations gather complementary signals such as seismic events and radioactive emissions. Export controls in many countries attempt to intercept materials and technical means that could be used for nuclear proliferation. Never the less, we have witnessed a plethora of nuclear proliferation episodes, that were undetected (or were belatedly detected) by these technologies - the Indian nuclear tests in 1998, the Libyan nuclear buildup, the Iranian enrichment program and the North Korea nuclear weapons program are some prime examples. In this talk we will discuss some of the technologies used for proliferation detection. In particular, we will note some of the issues relating to nuclear materials control agreements that epitomize political difficulties as they impact the implementation of science and technology.

  4. An update on pharmaceutical film coating for drug delivery.

    Science.gov (United States)

    Felton, Linda A; Porter, Stuart C

    2013-04-01

    Pharmaceutical coating processes have generally been transformed from what was essentially an art form in the mid-twentieth century to a much more technology-driven process. This review article provides a basic overview of current film coating processes, including a discussion on polymer selection, coating formulation additives and processing equipment. Substrate considerations for pharmaceutical coating processes are also presented. While polymeric coating operations are commonplace in the pharmaceutical industry, film coating processes are still not fully understood, which presents serious challenges with current regulatory requirements. Novel analytical technologies and various modeling techniques that are being used to better understand film coating processes are discussed. This review article also examines the challenges of implementing process analytical technologies in coating operations, active pharmaceutical ingredients in polymer film coatings, the use of high-solids coating systems and continuous coating and other novel coating application methods.

  5. 放疗调强计划不同分野数的三维验证比较%Compare the Three-dimensional Verification Results With Different Technologies During the Instensity-modulated Radiation Therapy

    Institute of Scientific and Technical Information of China (English)

    容贤冰; 付庆国; 杨海明; 吴建益

    2016-01-01

    Objective To compare the three-dimensional verification results with different technologies during the instensity-modulated radiation therapy. Methods50 patients with nasopharyngeal carcinoma treated from May 2013 to December 2015 in our hospital were selected. Based on the SFT and FJT,the corresponding therapy was conducted. Through compass measurements,gamma analysis was conducted in the three-dimensional space. Results With the error condition of gamma was 3 mm/3%,the passing rate of al the target regions and organ at risk based on FJT was the highest(>95%),at the same time,the passing rate of al the target regions based on SFT was 90%,the passing rate of organ at risk based on SFT was 92%,the verification result based on FJT was better than SFT(P<0.05).Conclusion During the intensity-modulated radiation therapy,the FJT can meet the clinical requirements for target regions and organ at risk.%目的:探讨放疗调强计划不同分野数的三维验证比较。方法临床选择2013年5月~2015年12月本院收治的鼻咽癌调强放疗患者50例,然后分别按多分野技术和混合固定铅门技术制定调强计划,并分别应用Compass实测验证两种技术的调强计划进行比较,对各感兴趣区域予以三维空间体积的Gamma分析。结果当设定Gamma误差条件为(3 mm/3%)时,全部靶区和危及器官的通过率在混合固定铅门技术时的通过率较高,均大于95%;而多分野技术全部靶区的通过率则为90%,危及器官的通过率在多分野技术的调强计划通过率稍高为92%。混合固定铅门计划的三维验证结果高于多分野计划,差异有统计学意义(P<0.05)。结论鼻咽癌调强放疗进行混合固定铅门技术,可满足其靶区和危及器官的临床的质量控制要求。

  6. SPECIFIC FEATURES OF TECHNOLOGY OF MANUFACTURING A ZINC-COATED TUB WIRE FOR MUZZLE (BOTTLE’ HOOD WIRE

    Directory of Open Access Journals (Sweden)

    D. B. Zuev

    2016-01-01

    Full Text Available The paper presents the main technical specifications of galvanized low carbon wire for muzzles (bottle’hood wire, consistent with the exploitation requirements to the wire in the manufacture and use of muzzles. The main criteria when selecting the steel grade and upon selection of the technological processes are given. 

  7. HDL to verification logic translator

    Science.gov (United States)

    Gambles, J. W.; Windley, P. J.

    The increasingly higher number of transistors possible in VLSI circuits compounds the difficulty in insuring correct designs. As the number of possible test cases required to exhaustively simulate a circuit design explodes, a better method is required to confirm the absence of design faults. Formal verification methods provide a way to prove, using logic, that a circuit structure correctly implements its specification. Before verification is accepted by VLSI design engineers, the stand alone verification tools that are in use in the research community must be integrated with the CAD tools used by the designers. One problem facing the acceptance of formal verification into circuit design methodology is that the structural circuit descriptions used by the designers are not appropriate for verification work and those required for verification lack some of the features needed for design. We offer a solution to this dilemma: an automatic translation from the designers' HDL models into definitions for the higher-ordered logic (HOL) verification system. The translated definitions become the low level basis of circuit verification which in turn increases the designer's confidence in the correctness of higher level behavioral models.

  8. HDL to verification logic translator

    Science.gov (United States)

    Gambles, J. W.; Windley, P. J.

    1992-01-01

    The increasingly higher number of transistors possible in VLSI circuits compounds the difficulty in insuring correct designs. As the number of possible test cases required to exhaustively simulate a circuit design explodes, a better method is required to confirm the absence of design faults. Formal verification methods provide a way to prove, using logic, that a circuit structure correctly implements its specification. Before verification is accepted by VLSI design engineers, the stand alone verification tools that are in use in the research community must be integrated with the CAD tools used by the designers. One problem facing the acceptance of formal verification into circuit design methodology is that the structural circuit descriptions used by the designers are not appropriate for verification work and those required for verification lack some of the features needed for design. We offer a solution to this dilemma: an automatic translation from the designers' HDL models into definitions for the higher-ordered logic (HOL) verification system. The translated definitions become the low level basis of circuit verification which in turn increases the designer's confidence in the correctness of higher level behavioral models.

  9. Generic System Verilog Universal Verification Methodology Based Reusable Verification Environment for Efficient Verification of Image Signal Processing IPS/SOCS

    Directory of Open Access Journals (Sweden)

    Abhishek Jain

    2012-12-01

    Full Text Available In this paper, we present Generic System Verilog Universal Verification Methodology based Reusable Verification Environment for efficient verification of Image Signal Processing IP’s/SoC’s. With the tight schedules on all projects it is important to have a strong verification methodology which contributes to First Silicon Success. Deploy methodologies which enforce full functional coverage and verification of corner cases through pseudo random test scenarios is required. Also, standardization of verification flow is needed. Previously, inside imaging group of ST, Specman (e/Verilog based Verification Environment forIP/Subsystem level verification and C/C++/Verilog based Directed Verification Environment for SoC Level Verification was used for Functional Verification. Different Verification Environments were used at IP level and SoC level. Different Verification/Validation Methodologies were used for SoC Verification across multiple sites. Verification teams were also looking for the ways how to catch bugs early in the design cycle? Thus, Generic System Verilog Universal Verification Methodology (UVM based Reusable Verification Environment is required to avoid the problem of having so many methodologies and provides a standard unified solution which compiles on all tools.

  10. From square to circular polymeric microchannels by spin coating technology: a low cost platform for endothelial cell culture.

    Science.gov (United States)

    Vecchione, Raffaele; Pitingolo, Gabriele; Guarnieri, Daniela; Falanga, Andrea P; Netti, Paolo A

    2016-05-06

    Square microchannels are easy to fabricate by means of micromachining or lithographic techniques. However, in vitro vascular microcapillaries--as well as plug production and microparticle alignment--require mainly circular microchannels that can be used also in applications based on open microchannels. Nowadays, a simple, low cost, and versatile method to fabricate circular microchannels is still missing. Here, we report on a fast, inexpensive, flexible and reproducible method to fabricate circular microchannels by coupling spin coating with micromilled square microchannels. The proposed method is based on the balance between the displacement of liquid PDMS induced by centrifugal forces and the surface tension that tends to keep the liquid accumulated especially in the corners, which become therefore rounded. To show the versatility of the described experimental study we prepared a variety of rounded microchannels, including branched and PMMA-PDMS hybrid configuration microchannels. Finally, an endothelial cell layer was formed by culturing brain endothelial bEnd.3 cells inside the proposed circular microchannels. Results demonstrated a more successful adhesion, growth, and homogeneous distribution of the cells along the circular microchannel than those observed in the square microchannel used as a control.

  11. Clinical Verification of Homeopathy

    Directory of Open Access Journals (Sweden)

    Michel Van Wassenhoven

    2011-07-01

    Full Text Available The world is changing! This is certainly true regarding the homeopathic practice and access to homeopathic medicine. Therefore our first priority at the ECH-LMHI [1] has been to produce a yearly report on the scientific framework of homeopathy. In the 2010 version a new chapter about epidemic diseases has been added including the Leptospirosis survey on the Cuban population. A second priority has been to review the definition of the homeopathic medicines respecting the new framework generated by the official registration procedure and the WHO report. We are working now on a documented (Materia Medica and provings list of homeopathic remedies to facilitate the registration of our remedies. The new challenges are: first of all more good research proposals and as such more funding (possible through ISCHI + Blackie Foundation as examples [2]; international acceptance of new guidelines for proving and clinical verification of homeopathic symptoms (Proposals are ready for discussion; total reconsideration of the homeopathic repertories including results of the clinical verification of the symptoms. The world is changing, we are part of the world and changes are needed also for homeopathy!

  12. Fluorine Based Superhydrophobic Coatings

    Directory of Open Access Journals (Sweden)

    Jean-Denis Brassard

    2012-05-01

    Full Text Available Superhydrophobic coatings, inspired by nature, are an emerging technology. These water repellent coatings can be used as solutions for corrosion, biofouling and even water and air drag reduction applications. In this work, synthesis of monodispersive silica nanoparticles of ~120 nm diameter has been realized via Stöber process and further functionalized using fluoroalkylsilane (FAS-17 molecules to incorporate the fluorinated groups with the silica nanoparticles in an ethanolic solution. The synthesized fluorinated silica nanoparticles have been spin coated on flat aluminum alloy, silicon and glass substrates. Functionalization of silica nanoparticles with fluorinated groups has been confirmed by Fourier Transform Infrared spectroscopy (FTIR by showing the presence of C-F and Si-O-Si bonds. The water contact angles and surface roughness increase with the number of spin-coated thin films layers. The critical size of ~119 nm renders aluminum surface superhydrophobic with three layers of coating using as-prepared nanoparticle suspended solution. On the other hand, seven layers are required for a 50 vol.% diluted solution to achieve superhydrophobicity. In both the cases, water contact angles were more than 150°, contact angle hysteresis was less than 2° having a critical roughness value of ~0.700 µm. The fluorinated silica nanoparticle coated surfaces are also transparent and can be used as paint additives to obtain transparent coatings.

  13. Verification of pneumatic railway brake models

    Science.gov (United States)

    Piechowiak, Tadeusz

    2010-03-01

    The article presents a survey of diverse methods for validation of pneumatic train brake modelling. Various experimental measurements of railway pneumatic brakes were made chiefly on a test stand at Poznań University of Technology; other test stands and some results have been taken from the literature. The measurements, some of them unconventional, were performed on separate pneumatic elements, brake devices, the brake pipe and fragments thereof. Mechanical devices were also included. The experimental measurement results were used for the verification of numerical models and for the determination of parameters. The latter was partially performed using an optimisation method.

  14. On-machine dimensional verification. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Rendulic, W.

    1993-08-01

    General technology for automating in-process verification of machined products has been studied and implemented on a variety of machines and products at AlliedSignal Inc., Kansas City Division (KCD). Tests have been performed to establish system accuracy and probe reliability on two numerically controlled machining centers. Commercial software has been revised, and new cycles such as skew check and skew machining, have been developed to enhance and expand probing capabilities. Probe benefits have been demonstrated in the area of setup, cycle time, part quality, tooling cost, and product sampling.

  15. Online fingerprint verification.

    Science.gov (United States)

    Upendra, K; Singh, S; Kumar, V; Verma, H K

    2007-01-01

    As organizations search for more secure authentication methods for user access, e-commerce, and other security applications, biometrics is gaining increasing attention. With an increasing emphasis on the emerging automatic personal identification applications, fingerprint based identification is becoming more popular. The most widely used fingerprint representation is the minutiae based representation. The main drawback with this representation is that it does not utilize a significant component of the rich discriminatory information available in the fingerprints. Local ridge structures cannot be completely characterized by minutiae. Also, it is difficult quickly to match two fingerprint images containing different number of unregistered minutiae points. In this study filter bank based representation, which eliminates these weakness, is implemented and the overall performance of the developed system is tested. The results have shown that this system can be used effectively for secure online verification applications.

  16. Shift Verification and Validation

    Energy Technology Data Exchange (ETDEWEB)

    Pandya, Tara M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Evans, Thomas M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Davidson, Gregory G [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Johnson, Seth R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Godfrey, Andrew T. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-09-07

    This documentation outlines the verification and validation of Shift for the Consortium for Advanced Simulation of Light Water Reactors (CASL). Five main types of problems were used for validation: small criticality benchmark problems; full-core reactor benchmarks for light water reactors; fixed-source coupled neutron-photon dosimetry benchmarks; depletion/burnup benchmarks; and full-core reactor performance benchmarks. We compared Shift results to measured data and other simulated Monte Carlo radiation transport code results, and found very good agreement in a variety of comparison measures. These include prediction of critical eigenvalue, radial and axial pin power distributions, rod worth, leakage spectra, and nuclide inventories over a burn cycle. Based on this validation of Shift, we are confident in Shift to provide reference results for CASL benchmarking.

  17. Shift Verification and Validation

    Energy Technology Data Exchange (ETDEWEB)

    Pandya, Tara M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Evans, Thomas M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Davidson, Gregory G [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Johnson, Seth R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Godfrey, Andrew T. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-09-07

    This documentation outlines the verification and validation of Shift for the Consortium for Advanced Simulation of LightWater Reactors (CASL). Fivemain types of problems were used for validation: small criticality benchmark problems; full-core reactor benchmarks for light water reactors; fixed source coupled neutron-photon dosimetry benchmarks; depletion/burnup benchmarks; and full-core reactor performance benchmarks. We compared Shift results to measured data and other simulated Monte Carlo radiation transport code results and found very good agreement in a variety of comparison measures. These include prediction of critical eigenvalue, radial and axial pin power distributions, rod worth, leakage spectra, and nuclide inventories over a burn cycle. Based on this validation of Shift, we are confident in Shift to provide reference results for CASL benchmarking.

  18. Practical mask inspection system with printability and pattern priority verification

    Science.gov (United States)

    Tsuchiya, Hideo; Ozaki, Fumio; Takahara, Kenichi; Inoue, Takafumi; Kikuiri, Nobutaka

    2011-05-01

    Through the four years of study in Association of Super-Advanced Electronics Technologies (ASET) on reducing mask manufacturing Turn Around Time (TAT) and cost, we have been able to establish a technology to improve the efficiency of the review process by applying a printability verification function that utilizes computational lithography simulations to analyze defects detected by a high-resolution mask inspection system. With the advent of Source-Mask Optimization (SMO) and other technologies that extend the life of existing optical lithography, it is becoming extremely difficult to judge a defect only by the shape of a mask pattern, while avoiding pseudo-defects. Thus, printability verification is indispensable for filtering out nuisance defects from high-resolution mask inspection results. When using computational lithography simulations to verify printability with high precision, the image captured by the inspection system must be prepared with extensive care. However, for practical applications, this preparation process needs to be simplified. In addition, utilizing Mask Data Rank (MDR) to vary the defect detection sensitivity according to the patterns is also useful for simultaneously inspecting minute patterns and avoiding pseudo-defects. Combining these two technologies, we believe practical mask inspection for next generation lithography is achievable. We have been improving the estimation accuracy of the printability verification function through discussion with several customers and evaluation of their masks. In this report, we will describe the progress of these practical mask verification functions developed through customers' evaluations.

  19. Reducing software security risk through an integrated approach research initiative model based verification of the Secure Socket Layer (SSL) Protocol

    Science.gov (United States)

    Powell, John D.

    2003-01-01

    This document discusses the verification of the Secure Socket Layer (SSL) communication protocol as a demonstration of the Model Based Verification (MBV) portion of the verification instrument set being developed under the Reducing Software Security Risk (RSSR) Trough an Integrated Approach research initiative. Code Q of the National Aeronautics and Space Administration (NASA) funds this project. The NASA Goddard Independent Verification and Validation (IV&V) facility manages this research program at the NASA agency level and the Assurance Technology Program Office (ATPO) manages the research locally at the Jet Propulsion Laboratory (California institute of Technology) where the research is being carried out.

  20. Reducing software security risk through an integrated approach research initiative model based verification of the Secure Socket Layer (SSL) Protocol

    Science.gov (United States)

    Powell, John D.

    2003-01-01

    This document discusses the verification of the Secure Socket Layer (SSL) communication protocol as a demonstration of the Model Based Verification (MBV) portion of the verification instrument set being developed under the Reducing Software Security Risk (RSSR) Trough an Integrated Approach research initiative. Code Q of the National Aeronautics and Space Administration (NASA) funds this project. The NASA Goddard Independent Verification and Validation (IV&V) facility manages this research program at the NASA agency level and the Assurance Technology Program Office (ATPO) manages the research locally at the Jet Propulsion Laboratory (California institute of Technology) where the research is being carried out.

  1. 基于虚拟仪器的真空计电参数检定系统%Electrical Parameter Verification System of Vacuumomter based on Virtual Instrument Technology

    Institute of Scientific and Technical Information of China (English)

    贾军伟; 张书锋; 王欢; 李彤; 田虎林

    2014-01-01

    介绍了真空计电参数检定装置及检定方法,并基于美国NI公司的Labview软件开发平台和真空计电参数检定规程,结合日常型号服务的真空计电参数计量需求,开发了真空计电参数检定程序。程序以模块化思想为基础,可进行不同厂家各类真空计的的检定,实现数据自动处理,报告自动生成。%The electrical parameter verification equipment of vacuumomter and the verification method are introduced. Based on the Labview software and“Verification regulation for electric parameters of vacuumometer”, to meet the demand of ordinary type service, an electric parameters of vacuumometer verification program is developed . This software can be applied to kinds of vertification of vacuumometer, provides modular structures which may automatically deal with the date of tested machines, and the origi-nal record and certificates can go into mass production automatically.

  2. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT PHYSICAL REMOVAL OF CRYPTOSPORIDIUM OOCYSTS AND GIARDIA CYSTS IN DRINKING WATER PALL CORPORATION WPM-1 MICROFILTRATION SYSTEM AT PITTSBURGH, PA - NSF 00/09/EPADW395

    Science.gov (United States)

    Verification testing of the Pall Corporation WPM-1 Microfiltration Pilot System was conducted from February 3 to March 5, 1999. The Pall WPM-1 membrane is a hollow fiber type microfiltration membrane made of polyvinylidenefluoride (PVDF). It has a 0.1 micrometer ( m) nominal por...

  3. Utterance Verification for Text-Dependent Speaker Recognition: a Comparative Assessment Using the RedDots Corpus

    DEFF Research Database (Denmark)

    Kinnunen, Tomi; Sahidullah, Md; Kukanov, Ivan;

    2016-01-01

    Text-dependent automatic speaker verification naturally calls for the simultaneous verification of speaker identity and spoken content. These two tasks can be achieved with automatic speaker verification (ASV) and utterance verification (UV) technologies. While both have been addressed previously...... in the literature, a treatment of simultaneous speaker and utterance verification with a modern, standard database is so far lacking. This is despite the burgeoning demand for voice biometrics in a plethora of practical security applications. With the goal of improving overall verification performance, this paper...... reports different strategies for simultaneous ASV and UV in the context of short-duration, text-dependent speaker verification. Experiments performed on the recently released RedDots corpus are reported for three different ASV systems and four different UV systems. Results show that the combination...

  4. 40 CFR 1065.307 - Linearity verification.

    Science.gov (United States)

    2010-07-01

    ... linearity verification generally consists of introducing a series of at least 10 reference values to a... reference values of the linearity verification. For pressure, temperature, dewpoint, and GC-ECD linearity verifications, we recommend at least three reference values. For all other linearity verifications select...

  5. System and Component Software Specification, Run-time Verification and Automatic Test Generation Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The following background technology is described in Part 5: Run-time Verification (RV), White Box Automatic Test Generation (WBATG). Part 5 also describes how WBATG...

  6. Reconfigurable system design and verification

    CERN Document Server

    Hsiung, Pao-Ann; Huang, Chun-Hsian

    2009-01-01

    Reconfigurable systems have pervaded nearly all fields of computation and will continue to do so for the foreseeable future. Reconfigurable System Design and Verification provides a compendium of design and verification techniques for reconfigurable systems, allowing you to quickly search for a technique and determine if it is appropriate to the task at hand. It bridges the gap between the need for reconfigurable computing education and the burgeoning development of numerous different techniques in the design and verification of reconfigurable systems in various application domains. The text e

  7. Grazing-Angle Fourier Transform Infrared Spectroscopy for Surface Cleanliness Verification

    Science.gov (United States)

    2003-03-01

    As part of the Surface Cleanliness Verification project, sponsored by the Strategic Environmental Research and Development Program, the Naval...very sensitive levels (< 1.0 microgram/sq cm). Examples of DoD applications where surface cleanliness is critical include coating, plating and bonding

  8. Research Progress and Application of Superhard Nano-Micron PVD Coating Technology in the Cutting Manufacturing Area%超硬纳微米PVD涂层技术在刀具领域的应用及研究进展

    Institute of Scientific and Technical Information of China (English)

    张而耕; 朱州; 张体波

    2015-01-01

    ABSTRACT:The paper introduced the principle, characteristics, and advantages and disadvantages of three methods of vacuum evaporation, sputtering and ion plating in physical vapor deposition ( PVD) technology, and introduced the PVD coating technology that is widely used in cutting tools by four categories of binary, multiple coatings, multilayer coatings and nano multilayer composite coating. Based on a large amount of literature, combined with the author's experience in the research and application of PVD tech-nology for many years, the paper reviewed the research progress of superhard nano-micron PVD coating technology in the field of application of cutting tool from the most important perspective of improving the cutting tool life, and further discussed the multiple coating, multilayer coating and nanometer coating in details. Cutting tool surface with application of physical vapor deposition coa-ting technology enabled the tool to obtain excellent overall performance, which significantly improved the life of cutting tools, re-duced production costs, and increased the machining efficiency substantially. Finally, the paper forecasted the wide application of physical vapor deposition coating technology in composite superhard cutting ( including milling of mold steel, hardened steel whose hardness over HRC55 ) , cutting hard processing materials ( including high-temperature alloys, titanium alloy, stainless steel, etc. ) , machining and processing composite materials of graphite and carbon fiber, etc. and high-speedily machining non-ferrous metals ( including aluminum, copper alloys, nickel, etc. ) in the future.%介绍了物理气相沉积( PVD)技术的原理、特点和真空蒸镀、溅射镀和离子镀之间的优缺点,从二元涂层、多元涂层、多层涂层和纳米多层复合涂层等4种类别上介绍了PVD涂层技术在切削刀具上的广泛应用。在查阅和整理大量文献资料的基础上,也结合笔者多年从事PVD技术的

  9. Metallography of Aluminide Coatings

    Science.gov (United States)

    1991-05-01

    Aero-Space Technologies Australia, Systems Division Librarian Ansett Airlines of Australia, Library Australian Airlines, Library Qantas Airways Limited...Fink, R, W. Heakel. " Analysis of Microstructural Change due to Cyclic Oxidation in Aluminilde-coated NI-Al. NI-Cr and NI-Cr-Al Alloys". High Temperature

  10. Heat treatment of CVD and PVD coated steels. Influence on coating build-up, dimensional changes, residual stress distribution and technological properties. Final report; Waermebehandlung CVD- und PVD-beschichteter Staehle. Einfluss auf Schichtaufbau, Massaenderungen, Eigenspannungsverteilung und technologische Eigenschaften. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Kessler, O.

    1993-12-31

    Coating in accordance with the CVD process offers a number of advantages as compared to other processes. CVD facilities are of a relatively simple construction, as coating is possible almost at ambient pressure. The disadvantage of the CVD process is the high coating temperature involved. Previously, this fact has led to a low volume of air-hardening steels being coated. Due to high coating temperatures, coated steel substrates require subsequent heat treatment, in order to obtain an operational material condition. Steels with different hardenabilities (Ck 45, 42 CrMo 4, 100 Cr 6, X 155 CrVmo 12.1) and different coatings (HT-CVD TiN, MT-CVD TiCN, PVD TiN) were retreated with heat under inert gas and vacuum. The following coating and substrate properties were investigated before and after retreatment with heat: chemical and phase composition, structure, hardness, residual stresses, and adhesion of the coating. It was possible to obtain the desired structures and hardnesses in the substrates. The coatings remained macroscopically unchanged during vacuum heat treatment, while the coating color changed during inert gas heat treatment. (orig./MM) [Deutsch] Die Beschichtung nach dem CVD-Verfahren weist gegenueber anderen Verfahren eine Reihe von Vorteilen auf. CVD-Anlagen sind relativ einfach aufgebaut, da nahezu bei Umgebungsdruck beschichtet werden kann. Der Nachteil des CVD-Verfahrens ist die hohe Beschichtungstemperatur. Diese Tatsache hat bisher dazu gefuehrt, dass nicht lufthaertende Staehle nur in geringem Umfang beschichtet wurden. Aufgrund der hohen Beschichtungstemperaturen beduerfen beschichtete Stahlsubstrate einer nachtraeglichen Waermebehandlung zur Erzielung eines einsatzgerechten Werkstoffzustands. Staehle mit unterschiedlichen Haertbarkeiten (Ck 45, 42 CrMo 4, 100 Cr 6, X 155 CrVMo 12.1) und verschiedenen Schichten (HT-CVD TiN, MT-CVDTiCN, PVD TiN) wurden unter Schutzgas und Vakuum nachwaermebehandelt. Folgende Schicht- und Substrateigenschaften wurden

  11. Study on polarization characteristics of BiFeO3 thin films prepared by sol-gel spin-coating technology

    Science.gov (United States)

    Jia, Ze; Wu, Xiao; Zhang, Mingming; Xu, Jianlong; Zhang, Naiwen; Liou, Juin J.

    2015-07-01

    The ferroelectric polarization properties of bismuth ferrite (BFO) thin films deposited on Pt(111)/TiO2/SiO2/Si(100) substrates by sol-gel spin-coating technology affected by the processes and dopants have been studied and analyzed tentatively. The results indicate BFO thin film should be introduced to a rapid thermal annealing (RTA) process at N2 atmosphere. The enhanced ferroelectric polarization properties were observed in Mn and La doped BFO thin films, because ion substitution may improve the inherent volatility of Bi atoms, valence fluctuation of Fe ions and magnetic spin structures, reducing the formation of oxygen vacancies. The increased remnant polarization observed in the BFO thin film with a lead zirconate titanate (PZT) seeding layer has also been analyzed as the probable results of small changes of lattice parameters caused by constraint stress, reduced defects and decreased leakage current density, which are contributed by the PZT seeding layer possibly. Moreover, the remnant polarization approximately 79 μC/cm2 is observed in (Bi0.95La0.05)FeO3 (BLFO) thin film with a PZT seeding layer, which is twice and treble the values of BFO thin films with and without a PZT seeding layer, indicating PZT seeding layer is much more effective for BLFO thin film which has a substitution at A site.

  12. Behavioral biometrics for verification and recognition of malicious software agents

    Science.gov (United States)

    Yampolskiy, Roman V.; Govindaraju, Venu

    2008-04-01

    Homeland security requires technologies capable of positive and reliable identification of humans for law enforcement, government, and commercial applications. As artificially intelligent agents improve in their abilities and become a part of our everyday life, the possibility of using such programs for undermining homeland security increases. Virtual assistants, shopping bots, and game playing programs are used daily by millions of people. We propose applying statistical behavior modeling techniques developed by us for recognition of humans to the identification and verification of intelligent and potentially malicious software agents. Our experimental results demonstrate feasibility of such methods for both artificial agent verification and even for recognition purposes.

  13. Westinghouse thermal barrier coatings development

    Energy Technology Data Exchange (ETDEWEB)

    Goedjen, J.G.; Wagner, G. [Westinghouse Electric Corp., Orlando, FL (United States)

    1995-10-01

    Westinghouse, in conjunction with the Department of Energy and Oak Ridge National Laboratory, has embarked upon a program for the development of advanced thermal barrier coatings for industrial gas turbines. Development of thermal barrier coatings (TBC`s) for industrial gas turbines has relied heavily on the transfer of technology from the aerospace industry. Significant differences in the time/temperature/stress duty cycles exist between these two coating applications. Coating systems which perform well in aerospace applications may not been optimized to meet power generation performance requirements. This program will focus on development of TBC`s to meet the specific needs of power generation applications. The program is directed at developing a state-of-the-art coating system with a minimum coating life of 25,000 hours at service temperatures required to meet increasing operating efficiency goals. Westinghouse has assembled a team of university and industry leaders to accomplish this goal. Westinghouse will coordinate the efforts of all program participants. Chromalloy Turbine Technologies, Inc. and Sermatech International, Inc. will be responsible for bond coat and TBC deposition technology. Praxair Specialty Powders, Inc. will be responsible for the fabrication of all bond coat and ceramic powders for the program. Southwest Research Institute will head the life prediction modelling effort; they will also be involved in coordinating nondestructive evaluation (NDE) efforts. Process modelling will be provided by the University of Arizona.

  14. Chromate conversion coatings and their current application

    Directory of Open Access Journals (Sweden)

    P. Pokorny

    2016-04-01

    Full Text Available This paper describes formation, composition and possible production technologies of application chromate coatings. Summation of common examples of applications of these coatings in corrosion protection of metals and alloys is provided. Individual chromate coatings are divided by their dominant anions either with CrVI or CrIII. Restrictions of chromate coatings with dominantly CrVI and related toxicity of hexavalent chromium is discussed in detail. In conclusion, examples of both chromium and other, alternative coatings are summed up. Application of these coatings as a protection for concrete hot-dip galvanized reinforcement is also reviewed.

  15. Generic interpreters and microprocessor verification

    Science.gov (United States)

    Windley, Phillip J.

    1990-01-01

    The following topics are covered in viewgraph form: (1) generic interpreters; (2) Viper microprocessors; (3) microprocessor verification; (4) determining correctness; (5) hierarchical decomposition; (6) interpreter theory; (7) AVM-1; (8) phase-level specification; and future work.

  16. Numident Online Verification Utility (NOVU)

    Data.gov (United States)

    Social Security Administration — NOVU is a mainframe application that accesses the NUMIDENT to perform real-time SSN verifications. This program is called by other SSA online programs that serve as...

  17. Biometric verification with correlation filters

    Science.gov (United States)

    Vijaya Kumar, B. V. K.; Savvides, Marios; Xie, Chunyan; Venkataramani, Krithika; Thornton, Jason; Mahalanobis, Abhijit

    2004-01-01

    Using biometrics for subject verification can significantly improve security over that of approaches based on passwords and personal identification numbers, both of which people tend to lose or forget. In biometric verification the system tries to match an input biometric (such as a fingerprint, face image, or iris image) to a stored biometric template. Thus correlation filter techniques are attractive candidates for the matching precision needed in biometric verification. In particular, advanced correlation filters, such as synthetic discriminant function filters, can offer very good matching performance in the presence of variability in these biometric images (e.g., facial expressions, illumination changes, etc.). We investigate the performance of advanced correlation filters for face, fingerprint, and iris biometric verification.

  18. Achievement report for fiscal 1999 on project for supporting the formation of energy/environmental technology verification project. International joint verification research project (Verification project relative to ignition and NOx reduction using plasma sub-burner in pulverized coal-fired furnace); 1999 nendo plasma sabubana ni yoru bifuntan nenshoro ni okeru chakka oyobi NO{sub x} teigen gijutsu ni kansuru jissho project seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    This project is executed through the cooperation of a Russian research institute, Akita Prefectural University, and the Ishikawajima-Harima Heavy Industries Co., Ltd. In the development of a plasma sub-burner and the basic research for its verification, a pulverized coal burning plasma sub-burner is designed and fabricated, a basic burning experiment is conducted for the plasma sub-burner, and plasma stabilization in a pulverized coal flow is simulated. In the verification study of the ignition by the plasma sub-burner in a pulverized coal-fired furnace, it is found that the newly-developed plasma sub-burner satisfies the prescribed operating conditions in the system and that the ignition of pulverized coal takes place across the air ratio range of 0.5-1.5 when pulverized coal is fed to the sub-burner. It is also found that NOx is reduced a great deal when a plasma operating on an orifice gas of air or nitrogen is generated in a gas which contains NOx. (NEDO)

  19. Enhanced Verification Test Suite for Physics Simulation Codes

    Energy Technology Data Exchange (ETDEWEB)

    Kamm, J R; Brock, J S; Brandon, S T; Cotrell, D L; Johnson, B; Knupp, P; Rider, W; Trucano, T; Weirs, V G

    2008-10-10

    This document discusses problems with which to augment, in quantity and in quality, the existing tri-laboratory suite of verification problems used by Los Alamos National Laboratory (LANL), Lawrence Livermore National Laboratory (LLNL), and Sandia National Laboratories (SNL). The purpose of verification analysis is demonstrate whether the numerical results of the discretization algorithms in physics and engineering simulation codes provide correct solutions of the corresponding continuum equations. The key points of this document are: (1) Verification deals with mathematical correctness of the numerical algorithms in a code, while validation deals with physical correctness of a simulation in a regime of interest. This document is about verification. (2) The current seven-problem Tri-Laboratory Verification Test Suite, which has been used for approximately five years at the DOE WP laboratories, is limited. (3) Both the methodology for and technology used in verification analysis have evolved and been improved since the original test suite was proposed. (4) The proposed test problems are in three basic areas: (a) Hydrodynamics; (b) Transport processes; and (c) Dynamic strength-of-materials. (5) For several of the proposed problems we provide a 'strong sense verification benchmark', consisting of (i) a clear mathematical statement of the problem with sufficient information to run a computer simulation, (ii) an explanation of how the code result and benchmark solution are to be evaluated, and (iii) a description of the acceptance criterion for simulation code results. (6) It is proposed that the set of verification test problems with which any particular code be evaluated include some of the problems described in this document. Analysis of the proposed verification test problems constitutes part of a necessary--but not sufficient--step that builds confidence in physics and engineering simulation codes. More complicated test cases, including physics models of

  20. Morbus Coats

    Science.gov (United States)

    Förl, B.; Schmack, I.; Grossniklaus, H.E.; Rohrschneider, K.

    2010-01-01

    Der fortgeschrittene Morbus Coats stellt im Kleinkindalter eine der schwierigsten Differenzialdiagnosen zum Retinoblastom dar. Wir beschreiben die klinischen und histologischen Befunde zweier Jungen im Alter von 9 und 21 Monaten mit einseitiger Leukokorie. Trotz umfassender Diagnostik mittels Narkoseuntersuchung, MRT und Ultraschall konnte ein Retinoblastom nicht sicher ausgeschlossen werden, und es erfolgte eine Enukleation. Histologisch wurde die Diagnose eines Morbus Coats gesichert. Da eine differenzialdiagnostische Abgrenzung zwischen Morbus Coats und Retinoblastom schwierig sein kann, halten wir in zweifelhaften Fällen auch angesichts der eingeschränkten Visusprognose und potenzieller Sekundärkomplikationen beim fortgeschrittenen Morbus Coats eine Enukleation für indiziert. PMID:18299842

  1. Science and Technology of Bio-Inert Thin Films as Hermetic-Encapsulating Coatings for Implantable Biomedical Devices: Application to Implantable Microchip in the Eye for the Artificial Retina

    Science.gov (United States)

    Auciello, Orlando; Shi, Bing

    Extensive research has been devoted to the development of neuron prostheses and hybrid bionic systems to establish links between the nervous system and electronic or robotic prostheses with the main focus of restoring motor and sensory functions in blind patients. Artificial retinas, one type of neural prostheses we are currently working on, aim to restore some vision in blind patients caused by retinitis picmentosa or macular degeneration, and in the future to restore vision at the level of face recognition, if not more. Currently there is no hermetic microchip-size coating that provides a reliable, long-term (years) performance as encapsulating coating for the artificial retina Si microchip to be implanted inside the eye. This chapter focuses on the critical topics relevant to the development of a robust, long-term artificial retina device, namely the science and technology of hermetic bio-inert encapsulating coatings to protect a Si microchip implanted in the human eye from being attacked by chemicals existing in the eye's saline environment. The work discussed in this chapter is related to the development of a novel ultrananocrystalline diamond (UNCD) hermetic coating, which exhibited no degradation in rabbit eyes. The material synthesis, characterization, and electrochemical properties of these hermetic coatings are reviewed for application as encapsulating coating for the artificial retinal microchips implantable inside the human eye. Our work has shown that UNCD coatings may provide a reliable hermetic bio-inert coating technology for encapsulation of Si microchips implantable in the eye specifically and in the human body in general. Electrochemical tests of the UNCD films grown under CH4/Ar/H2 (1%) plasma exhibit the lowest leakage currents (˜7 × 10-7 A/cm2) in a saline solution simulating the eye environment. This leakage is incompatible with the functionality of the first-generation artificial retinal microchip. However, the growth of UNCD on top of the

  2. FY 1995 report on verification of geothermal exploration technology. Development of fracture reservoir exploration technology (development of seismic exploration); 1995 nendo chinetsu tansa gijutsunado kensho chosa. Danretsugata choryuso tansaho kaihatsu (danseiha riyo tansaho kaihatsu) hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    This report provides the development of new exploration technology using elastic waves, such as reflection seismic survey, VSP, and seismic tomography, for precisely characterizing subsurface fractures in geothermal reservoirs. In order to investigate and improve the effective data acquisition and analysis methods for detecting a fault type of fractures, an experiment of a seismic tomography method was conducted using wells drilled in the Ogiri geothermal field, Aira-gun, Kagoshima Prefecture. An experiment of propagation characteristics of piezo type underground seismic source in the volcanic field was also conducted as a trend survey of underground seismic sources. The fracture type in the model field was systematically analyzed by measuring the core samples obtained in the demonstration test field through remanence measurement, fluid inclusion measurement, and zircon measurement using test equipment, and by analyzing results obtained from cores and results of seismic tomography obtained from the wells. Based on these results, the effectiveness and practical application of exploration methods using elastic waves were investigated. 80 refs., 250 figs., 49 tabs.

  3. Woodward Effect Experimental Verifications

    Science.gov (United States)

    March, Paul

    2004-02-01

    The work of J. F. Woodward (1990 1996a; 1996b; 1998; 2002a; 2002b; 2004) on the existence of ``mass fluctuations'' and their use in exotic propulsion schemes was examined for possible application in improving space flight propulsion and power generation. Woodward examined Einstein's General Relativity Theory (GRT) and assumed that if the strong Machian interpretation of GRT as well as gravitational / inertia like Wheeler-Feynman radiation reaction forces hold, then when an elementary particle is accelerated through a potential gradient, its rest mass should fluctuate around its mean value during its acceleration. Woodward also used GRT to clarify the precise experimental conditions necessary for observing and exploiting these mass fluctuations or ``Woodward effect'' (W-E). Later, in collaboration with his ex-graduate student T. Mahood, they also pushed the experimental verification boundaries of these proposals. If these purported mass fluctuations occur as Woodward claims, and his assumption that gravity and inertia are both byproducts of the same GRT based phenomenon per Mach's Principle is correct, then many innovative applications such as propellantless propulsion and gravitational exotic matter generators may be feasible. This paper examines the reality of mass fluctuations and the feasibility of using the W-E to design propellantless propulsion devices in the near to mid-term future. The latest experimental results, utilizing MHD-like force rectification systems, will also be presented.

  4. VAMOS: The verification and monitoring options study: Current research options for in-situ monitoring and verification of contaminant remediation and containment within the vadose zone

    Energy Technology Data Exchange (ETDEWEB)

    Betsill, J.D. [Sandia National Labs., Albuquerque, NM (United States); Gruebel, R.D. [Tech Reps., Inc., Albuquerque, NM (United States)

    1995-09-01

    The Verification and Monitoring Options Study Project (VAMOS) was established to identify high-priority options for future vadose-zone environmental research in the areas of in-situ remediation monitoring, post-closure monitoring, and containment emplacement and verification monitoring. VAMOS examined projected needs not currently being met with applied technology in order to develop viable monitoring and verification research options. The study emphasized a compatible systems approach to reinforce the need for utilizing compatible components to provide user friendly site monitoring systems. To identify the needs and research options related to vadose-zone environmental monitoring and verification, a literature search and expert panel forums were conducted. The search included present drivers for environmental monitoring technology, technology applications, and research efforts. The forums included scientific, academic, industry, and regulatory environmental professionals as well as end users of environmental technology. The experts evaluated current and future monitoring and verification needs, methods for meeting these needs, and viable research options and directions. A variety of high-priority technology development, user facility, and technology guidance research options were developed and presented as an outcome of the literature search and expert panel forums.

  5. Active Packaging Coatings

    Directory of Open Access Journals (Sweden)

    Luis J. Bastarrachea

    2015-11-01

    Full Text Available Active food packaging involves the packaging of foods with materials that provide an enhanced functionality, such as antimicrobial, antioxidant or biocatalytic functions. This can be achieved through the incorporation of active compounds into the matrix of the commonly used packaging materials, or by the application of coatings with the corresponding functionality through surface modification. The latter option offers the advantage of preserving the packaging materials’ bulk properties nearly intact. Herein, different coating technologies like embedding for controlled release, immobilization, layer-by-layer deposition, and photografting are explained and their potential application for active food packaging is explored and discussed.

  6. The Pretreatment Technology of the Electro-Coating in the Low-Carbon Mode%低碳模式下的电泳涂装前处理技术

    Institute of Scientific and Technical Information of China (English)

    米德伟; 杨昌柱; 李新立

    2011-01-01

    从低碳的模式出发,总结了传统电泳涂装前处理过程中,实现低能耗、低排放、低污染的技术原则和方法。介绍了新型转化膜技术的发展和应用情况,以及新型转化膜实际应用过程中亟待解决的问题。展望了涂装前处理技术的发展方向。%Based on the low-carbon mode, the technology principles and methods of the low energy consumption, the low emission and the low pollution in the traditional pretreatment processes of the electro-coating were discussed. The technology and the application of the developing conversion coating were introduced, the problems urgent to be solved in practical application of new conversion coating were presented. The technology of the painting pretreatment was prospected.

  7. Verification and validation in railway signalling engineering - an application of enterprise systems techniques

    Science.gov (United States)

    Chen, Xiangxian; Wang, Dong; Huang, Hai; Wang, Zheng

    2014-07-01

    Verification and validation of a railway signalling system is a crucial part of the workflow in railway signalling enterprises. Typically, the verification and validation of this type of safety-critical system is performed by means of an on-site test, which leads to a low efficiency and high costs. A novel method for the verification and validation of a railway signalling system is proposed as an application of the enterprise information system (EIS) technique. In this application, the EIS and the simulation test platform are combined together, which enhances the coherence and consistency of the information exchange between the system development and the system verification, to improve the work efficiency. The simulation and auto-test technology used in the system verification also lowers the human and financial costs.

  8. CTBT Integrated Verification System Evaluation Model

    Energy Technology Data Exchange (ETDEWEB)

    Edenburn, M.W.; Bunting, M.L.; Payne, A.C. Jr.

    1997-10-01

    Sandia National Laboratories has developed a computer based model called IVSEM (Integrated Verification System Evaluation Model) to estimate the performance of a nuclear detonation monitoring system. The IVSEM project was initiated in June 1994, by Sandia`s Monitoring Systems and Technology Center and has been funded by the US Department of Energy`s Office of Nonproliferation and National Security (DOE/NN). IVSEM is a simple, top-level, modeling tool which estimates the performance of a Comprehensive Nuclear Test Ban Treaty (CTBT) monitoring system and can help explore the impact of various sensor system concepts and technology advancements on CTBT monitoring. One of IVSEM`s unique features is that it integrates results from the various CTBT sensor technologies (seismic, infrasound, radionuclide, and hydroacoustic) and allows the user to investigate synergy among the technologies. Specifically, IVSEM estimates the detection effectiveness (probability of detection) and location accuracy of the integrated system and of each technology subsystem individually. The model attempts to accurately estimate the monitoring system`s performance at medium interfaces (air-land, air-water) and for some evasive testing methods such as seismic decoupling. This report describes version 1.2 of IVSEM.

  9. Test/QA Plan for Verification of Radio Frequency Identification (RFID) for Tracking Hazardous Waste Shipments across International Borders

    Science.gov (United States)

    The verification test will be conducted under the auspices of the U.S. Environmental Protection Agency (EPA) through the Environmental Technology Verification (ETV) Program. It will be performed by Battelle, which is managing the ETV Advanced Monitoring Systems (AMS) Center throu...

  10. Test/QA Plan for Verification of Radio Frequency Identification (RFID) for Tracking Hazardous Waste Shipments across International Borders

    Science.gov (United States)

    The verification test will be conducted under the auspices of the U.S. Environmental Protection Agency (EPA) through the Environmental Technology Verification (ETV) Program. It will be performed by Battelle, which is managing the ETV Advanced Monitoring Systems (AMS) Center throu...

  11. 直立式浸胶法制备环氧树脂涂覆玻璃纤维%Glass Fiber Coated with Epoxy Resin Utilizing Up-Right Soaking Glue Technology

    Institute of Scientific and Technical Information of China (English)

    从小晔; 王晓钧; 代宝莹

    2012-01-01

    通过直立式浸胶制备环氧树脂(EP)涂覆E-玻璃纤维(E-GF).直立式浸胶方式和聚醚醚酮(PEEK)挤胶辊的采用使得涂覆E-GF的含胶量、涂覆层均匀程度和拉伸载荷高于沉浸式浸胶和手工浸胶.研究表明,直立式浸胶过程中,稀释剂对样品的含胶量影响最大;胶液的温度对涂覆GF拉伸载荷的影响最大.扫描电子显微镜分析证明直立式浸胶的胶液层均匀,断口照片显示纤维产生平齐断裂,使得涂覆纤维的拉伸载荷提高.傅里叶红外光谱分析证实直立式、沉浸式和手工浸胶三种不同浸胶方式不影响树脂胶液的固化反应,含胶量和涂覆均匀度不同是导致涂覆E-GF拉伸性能存在差异的原因.%Up-right soaking glue technology was designed and utilized in this work to manufacture the E-glass fiber ( E-GF) coated with epoxy resin (EP ) .Due to the up-right soaking glue technology and the application of polyetheretherketone (PEEK) roll coater in the process, the gel content, the homogeneity of resin coating layer and the tensile load of the coated E-GF were better than those of the immersion soaking glue technology and the hand-by soaking glue technology.The research results illustrated that the diluent agent exerted a critical influence on gel content and the temperature of resin glue was essential for the tensile load of the coated E-GF respectively.The result of Scanning Electron Microscopy proved that the glue layer on the surface of E-GF was homogenous and the coated E-GF exhibited a level break under the tensile force, which improved the tensile load of the coated E-GF. Through the Fourier-Transfer Infrared investigation, the cross-polymerization of the epoxy resin was proved to be the same for the up-right, immersion and hand-by soaking glue technology.The variation of the gel content and the homogeneity of resin coating layer affected the tensile property of the coated E-GF.

  12. Functional verification coverage measurement and analysis

    CERN Document Server

    Piziali, Andrew

    2007-01-01

    This book addresses a means of quantitatively assessing functional verification progress. Without this process, design and verification engineers, and management, are left guessing whether or not they have completed verifying the device they are designing.

  13. 10 CFR 300.11 - Independent verification.

    Science.gov (United States)

    2010-01-01

    ... skills required for verification are often cross-disciplinary. For example, an individual verifier...) Companies that provide verification services must use professionals that possess the necessary skills and...: American Institute of Certified Public Accountants; American National Standards Institute's...

  14. Effects of pulsed light treatments and pectin edible coatings on the quality of fresh-cut apples: a hurdle technology approach.

    Science.gov (United States)

    Moreira, María R; Álvarez, María V; Martín-Belloso, Olga; Soliva-Fortuny, Robert

    2017-01-01

    Pulsed light (PL) treatments stand as an alternative for the shelf-life extension of fresh-cut products. The antimicrobial effects of PL are well known; however, its influence on quality attributes needs to be assessed. This study was aimed at evaluating the application of PL treatments in combination with pectin-based edible coatings enriched with dietary fiber for the preservation of fresh-cut apples. Dipping of fresh-cut apples in ascorbic acid/calcium chloride solution prior to pectin coating and PL treatments was effective to minimize browning and softening of apple surfaces. Incorporation of fiber in the pectin coating did not cause any change in microbial loads and sensory acceptability of apple cubes. Pectin-coated PL-treated apple pieces exhibited significantly higher antioxidant activity values than fresh and PL control samples. At the end of storage, the combination of both treatments resulted in an almost 2 log CFU g(-1) reduction of microbial counts. Sensory attribute scores did not fall below the rejection limit throughout 14 days, although the presence of off-odors limited the acceptability of the pectin-coated samples. The results demonstrate that PL treatments applied to pectin-coated fresh-cut apples may be used to maintain quality attributes, thus conferring prebiotic potential and extending the shelf-life of the product. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry.

  15. Self-Healing anticorrosive coatings

    DEFF Research Database (Denmark)

    Nesterova, Tatyana

    to steel substrates, and subjected to salt spray exposure and reverse impact testing. Neither of the tests revealed any drawbacks from addition of microcapsules to an epoxy coating in a concentration up to 50 vol %. On the contrary, the results of the impact test has shown that addition of microcapsules......Self-healing anticorrosive coatings are multi-component so-called smart materials, which have been proposed as a way to long-lasting corrosion protection of steel structures. The presently most promising technology route is based on microcapsules, filled with active healing agents, and has been...... means of separation were investigated. Capsules with a mean diameter less than 150 µm were obtained using a steel sieve coated with a fluoropolymer coating. These smaller capsules were used in further investigation as model capsules. A range of microcapsule-containing coatings was formulated, applied...

  16. Study on the Technology of Micro Silver-coated Copper Powders in Conductive Ink%用于导电油墨的银包覆铜微粉工艺研究

    Institute of Scientific and Technical Information of China (English)

    李雅丽

    2012-01-01

    The micro size of copper powders were prepared by pre-reduction method using glucose in the ethyl-ene glycol system, and the micro silver type of copper-coated powders were directly made through substitution reaction method. By means of the laboratory experiment on the conductivity, the varieties of resistance value was discussed on the powders at different conditions. Therefore the optimum technology condition is confirmed to prepare the micro silver-coated copper powders.%在乙二醇体系中采用葡萄糖预还原法制备微米级铜粉,由直接置换法制备银包覆铜型微粉.通过导电性实验讨论不同条件下粉体的电阻值变化,确定了制备银包覆铜型微粉的最佳工艺条件.

  17. The Research of Drag Reduction Anti-corrosion Coating Technology for Marine Natural Gas Condensed Liquid Pipeline%海洋天然气凝析液管道内壁减阻防腐涂层技术研究

    Institute of Scientific and Technical Information of China (English)

    杜宝银; 李京; 陆卫中; 张晓灵; 郭旭; 高英; 张立新; 吴文通; 杨加栋; 史杰智

    2013-01-01

    According to the service characteristics of marine condensate gas pipeline, determine the development of new two types solvent-free coatings of drag reduction, including technological performance index, test method and test standard of coatings. Through the formula optimization design and pilot-plant test, finally the two types of solvent-free epoxy modified coating are suitable for anti-drag natural gas pipeline at room temperature and for anticorrosion gas liquids pipeline at medium temperature. Coatings were tested by the third party inspection agency, its performance indicators meet the design requirements. And through the field production line applied, the anti-drag and anti-corrosion coatings quality and application had met the needs of the mass production.%根据输送海洋天然气管道凝析液的服役特点,确定了研制新型的无溶剂内减阻防腐涂料的涂层类型、性能指标、检验方法和测试标准。通过配方优化设计和工艺试验,最终研制出了适用于非腐蚀性气体管道输送的常温无溶剂改性环氧涂料以及适用于天然气凝析液管道输送的中温无溶剂改性环氧涂料内减阻涂料。涂料经第三方检测机构检测,其性能及指标符合设计的要求。并通过生产线涂覆工艺的现场实施,内减阻防腐涂层质量和施工工艺满足规模化生产的需要。

  18. Advanced Coating Removal Techniques

    Science.gov (United States)

    Seibert, Jon

    2006-01-01

    An important step in the repair and protection against corrosion damage is the safe removal of the oxidation and protective coatings without further damaging the integrity of the substrate. Two such methods that are proving to be safe and effective in this task are liquid nitrogen and laser removal operations. Laser technology used for the removal of protective coatings is currently being researched and implemented in various areas of the aerospace industry. Delivering thousands of focused energy pulses, the laser ablates the coating surface by heating and dissolving the material applied to the substrate. The metal substrate will reflect the laser and redirect the energy to any remaining protective coating, thus preventing any collateral damage the substrate may suffer throughout the process. Liquid nitrogen jets are comparable to blasting with an ultra high-pressure water jet but without the residual liquid that requires collection and removal .As the liquid nitrogen reaches the surface it is transformed into gaseous nitrogen and reenters the atmosphere without any contamination to surrounding hardware. These innovative technologies simplify corrosion repair by eliminating hazardous chemicals and repetitive manual labor from the coating removal process. One very significant advantage is the reduction of particulate contamination exposure to personnel. With the removal of coatings adjacent to sensitive flight hardware, a benefit of each technique for the space program is that no contamination such as beads, water, or sanding residue is left behind when the job is finished. One primary concern is the safe removal of coatings from thin aluminum honeycomb face sheet. NASA recently conducted thermal testing on liquid nitrogen systems and found that no damage occurred on 1/6", aluminum substrates. Wright Patterson Air Force Base in conjunction with Boeing and NASA is currently testing the laser remOval technique for process qualification. Other applications of liquid

  19. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT - 4100 VAPOR DETECTOR - ELECTRONIC SENSOR TECHNOLOGY

    Science.gov (United States)

    In July 1997, the U.S. Environmental Protection Agency conducted a demonstration of polychlorinated biphenyl (PCB) FIELD ANALYTICAL TECHNIQUES. The demonstration design was subjected to extensive review and comment by EPA's National Exposure Research Laboratory (NERL) Environmen...

  20. The role of nano-sized manganese coatings on bone char in removing arsenic(V) from solution: Implications for permeable reactive barrier technologies.

    Science.gov (United States)

    Liu, Jing; He, Lile; Dong, Faqin; Hudson-Edwards, Karen A

    2016-06-01

    Although the removal of arsenic(V) (As(V)) from solution can be improved by forming metal-bearing coatings on solid media, there has been no research to date examining the relationship between the coating and As(V) sorption performance. Manganese-coated bone char samples with varying concentrations of Mn were created to investigate the adsorption and desorption of As(V) using batch and column experiments. Breakthrough curves were obtained by fitting the Convection-Diffusion Equation (CDE), and retardation factors were used to quantify the effects of the Mn coatings on the retention of As(V). Uncoated bone char has a higher retention factor (44.7) than bone char with 0.465 mg/g of Mn (22.0), but bone char samples with between 5.02 mg/g and 14.5 mg/g Mn have significantly higher retention factors (56.8-246). The relationship between retardation factor (Y) and Mn concentration (X) is Y = 15.1 X + 19.8. Between 0.2% and 0.6% of the sorbed As is desorbed from the Mn-coated bone char at an initial pH value of 4, compared to 30% from the uncoated bone char. The ability of the Mn-coated bone char to neutralize solutions increases with increased amounts of Mn on the char. The results suggest that using Mn-coated bone char in Permeable Reactive Barriers would be an effective method for remediating As(V)-bearing solutions such as acid mine drainage.

  1. Automated Verification of Virtualized Infrastructures

    DEFF Research Database (Denmark)

    Bleikertz, Sören; Gross, Thomas; Mödersheim, Sebastian Alexander

    2011-01-01

    Virtualized infrastructures and clouds present new challenges for security analysis and formal verification: they are complex environments that continuously change their shape, and that give rise to non-trivial security goals such as isolation and failure resilience requirements. We present a pla...

  2. Eggspectation : organic egg verification tool

    NARCIS (Netherlands)

    Ruth, van S.M.; Hoogenboom, L.A.P.

    2011-01-01

    In 2009 RIKILT conducted a study on about 2,000 eggs to evaluate three different analytical verification methods: carotenoid profiling, fatty acid profiling and isotope ratio mass spectrometry. The eggs were collected from about 50 Dutch farms. The selection was based on the farms’ location and size

  3. FinalReport for completed IPP-0110 and 0110A Projects:"High Energy Ion Technology of Interfacial Thin Film Coatings for Electronic, Optical and Industrial Applications"

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Ian

    2009-09-01

    The DOE-supported IPP (Initiatives for Proliferation Prevention) Project, IPP-0110, and its accompanying 'add-on project' IPP-0110A, entitled 'High Energy Ion Technology of Interfacial Thin Film Coatings for Electronic, Optical and Industrial Applications' was a collaborative project involving the Lawrence Berkeley National Laboratory (LBNL) as the U.S. DOE lab; the US surface modification company, Phygen, Inc., as the US private company involved; and the High Current Electronics Institute (HCEI) of the Russian Academy of Sciences, Tomsk, Siberia, Russia, as the NIS Institute involved. Regular scientific research progress meetings were held to which personnel came from all participating partners. The meetings were held mostly at the Phygen facilities in Minneapolis, Minnesota (with Phygen as host) with meetings also held at Tomsk, Russia (HCEI as host), and at Berkeley, California (LBNL as host) In this way, good exposure of all researchers to the various different laboratories involved was attained. This report contains the Final Reports (final deliverables) from the Russian Institute, HCEI. The first part is that for IPP-0110A (the 'main part' of the overall project) and the second part is that for the add-on project IPP-0110A. These reports are detailed, and contain all aspects of all the research carried out. The project was successful in that all deliverables as specified in the proposals were successfully developed, tested, and delivered to Phygen. All of the plasma hardware was designed, made and tested at HCEI, and the performance was excellent. Some of the machine and performance parameters were certainly of 'world class'. The goals and requirements of the IPP Project were well satisfied. I would like to express my gratitude to the DOE IPP program for support of this project throughout its entire duration, and for the unparalleled opportunity thereby provided for all of the diverse participants in the project to join

  4. Production technology for actual fields in severe corrosive environments; Fushoku kankyo jitsu fuirudo jisshoka gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Takai, T.; Kaneda, E.; Shoda, S.; Tochikawa, T. [Japan National Oil Corp., Tokyo (Japan)

    1998-10-30

    Joc has been developing the hardware and software, in corrosion and protection research project which has tree subthema as follows with collaborators. 1. From 1985 JNOC and JRCM have been developing the Coated TBG. Last year, we selected a gas well for the evaluation in Astrakhan Gas Field in Russia where production gas contains 25 % H{sub 2}S, and started the verification test of the corrosion resistance of the Coated TBG. 2. Two new coating technologies (Plasma sintering and YAG-laser cladding technology) are tried to apply for coating of well equipment. The former technology aims at improving erosion-resistance of drilling tools, for instance, blade stabilizer. The later aims to improve erosion-resistance and corrosion-resistance of production equipment which have complex curved surface or narrow sections. 3. JNOC and Nippon Steel have been developing the Material Selection Program for Tubing Strings. The prototype program has been produced, which includes some new items, galvanic corrosion effect in combination strings, corrosion properties of new material (modified 13Cr), reflection on the environments in actual well, and including the material cost. The influence of fluid velocity, WOR and dew point upon the corrosion-rate will be estimated. (author)

  5. Exploring the Possible Use of Information Barriers for future Biological Weapons Verification Regimes

    Energy Technology Data Exchange (ETDEWEB)

    Luke, S J

    2011-12-20

    This report describes a path forward for implementing information barriers in a future generic biological arms-control verification regime. Information barriers have become a staple of discussion in the area of arms control verification approaches for nuclear weapons and components. Information barriers when used with a measurement system allow for the determination that an item has sensitive characteristics without releasing any of the sensitive information. Over the last 15 years the United States (with the Russian Federation) has led on the development of information barriers in the area of the verification of nuclear weapons and nuclear components. The work of the US and the Russian Federation has prompted other states (e.g., UK and Norway) to consider the merits of information barriers for possible verification regimes. In the context of a biological weapons control verification regime, the dual-use nature of the biotechnology will require protection of sensitive information while allowing for the verification of treaty commitments. A major question that has arisen is whether - in a biological weapons verification regime - the presence or absence of a weapon pathogen can be determined without revealing any information about possible sensitive or proprietary information contained in the genetic materials being declared under a verification regime. This study indicates that a verification regime could be constructed using a small number of pathogens that spans the range of known biological weapons agents. Since the number of possible pathogens is small it is possible and prudent to treat these pathogens as analogies to attributes in a nuclear verification regime. This study has determined that there may be some information that needs to be protected in a biological weapons control verification regime. To protect this information, the study concludes that the Lawrence Livermore Microbial Detection Array may be a suitable technology for the detection of the

  6. A study of applications scribe frame data verifications using design rule check

    Science.gov (United States)

    Saito, Shoko; Miyazaki, Masaru; Sakurai, Mitsuo; Itoh, Takahisa; Doi, Kazumasa; Sakurai, Norioko; Okada, Tomoyuki

    2013-06-01

    In semiconductor manufacturing, scribe frame data generally is generated for each LSI product according to its specific process design. Scribe frame data is designed based on definition tables of scanner alignment, wafer inspection and customers specified marks. We check that scribe frame design is conforming to specification of alignment and inspection marks at the end. Recently, in COT (customer owned tooling) business or new technology development, there is no effective verification method for the scribe frame data, and we take a lot of time to work on verification. Therefore, we tried to establish new verification method of scribe frame data by applying pattern matching and DRC (Design Rule Check) which is used in device verification. We would like to show scheme of the scribe frame data verification using DRC which we tried to apply. First, verification rules are created based on specifications of scanner, inspection and others, and a mark library is also created for pattern matching. Next, DRC verification is performed to scribe frame data. Then the DRC verification includes pattern matching using mark library. As a result, our experiments demonstrated that by use of pattern matching and DRC verification our new method can yield speed improvements of more than 12 percent compared to the conventional mark checks by visual inspection and the inspection time can be reduced to less than 5 percent if multi-CPU processing is used. Our method delivers both short processing time and excellent accuracy when checking many marks. It is easy to maintain and provides an easy way for COT customers to use original marks. We believe that our new DRC verification method for scribe frame data is indispensable and mutually beneficial.

  7. Electromagnetic tracking for treatment verification in interstitial brachytherapy

    Science.gov (United States)

    Kellermeier, Markus; Tanderup, Kari

    2016-01-01

    Electromagnetic tracking (EMT) is used in several medical fields to determine the position and orientation of dedicated sensors, e.g., attached to surgical tools. Recently, EMT has been introduced to brachytherapy for implant reconstruction and error detection. The manuscript briefly summarizes the main issues of EMT and error detection in brachytherapy. The potential and complementarity of EMT as treatment verification technology will be discussed in relation to in vivo dosimetry and imaging. PMID:27895688

  8. Methods of Verification, Accountability and Control of Special Nuclear Material

    Energy Technology Data Exchange (ETDEWEB)

    Stewart, J.E.

    1999-05-03

    This session demonstrates nondestructive assay (NDA) measurement, surveillance and analysis technology required to protect, control and account (MPC and A) for special nuclear materials (SNM) in sealed containers. These measurements, observations and analyses comprise state-of-the art, strengthened, SNM safeguards systems. Staff member specialists, actively involved in research, development, training and implementation worldwide, will present six NDA verification systems and two software tools for integration and analysis of facility MPC and A data.

  9. Black Molecular Adsorber Coatings for Spaceflight Applications

    Science.gov (United States)

    Abraham, Nithin Susan; Hasegawa, Mark Makoto; Straka, Sharon A.

    2014-01-01

    The molecular adsorber coating is a new technology that was developed to mitigate the risk of on-orbit molecular contamination on spaceflight missions. The application of this coating would be ideal near highly sensitive, interior surfaces and instruments that are negatively impacted by outgassed molecules from materials, such as plastics, adhesives, lubricants, epoxies, and other similar compounds. This current, sprayable paint technology is comprised of inorganic white materials made from highly porous zeolite. In addition to good adhesion performance, thermal stability, and adsorptive capability, the molecular adsorber coating offers favorable thermal control characteristics. However, low reflectivity properties, which are typically offered by black thermal control coatings, are desired for some spaceflight applications. For example, black coatings are used on interior surfaces, in particular, on instrument baffles for optical stray light control. Similarly, they are also used within light paths between optical systems, such as telescopes, to absorb light. Recent efforts have been made to transform the white molecular adsorber coating into a black coating with similar adsorptive properties. This result is achieved by optimizing the current formulation with black pigments, while still maintaining its adsorption capability for outgassing control. Different binder to pigment ratios, coating thicknesses, and spray application techniques were explored to develop a black version of the molecular adsorber coating. During the development process, coating performance and adsorption characteristics were studied. The preliminary work performed on black molecular adsorber coatings thus far is very promising. Continued development and testing is necessary for its use on future contamination sensitive spaceflight missions.

  10. Application of the Flexible Ceramic Internal Coating Technology of Offshore Platform Fire Water Pipeline%海洋平台消防水管线柔性陶瓷内涂技术的应用

    Institute of Scientific and Technical Information of China (English)

    王文若; 陈珣

    2014-01-01

    In order to improve the corrosion resistance of offshore platform fire water pipeline , and extend the life of the pipeline, a new type of flexible ceramic (CeRam-Kote 54) internal coating technology is used for the corrosion construction of the fire water pipelines on an offshore platform .The technology requirements for the construction , inspection control difficulties and key points are summarized .The result showed that the internal coating technology has obvious advantages than conventional tech -nology , and the construction is simple , it can be widely applied in fire water pipeline on offshore platform .%为了提高海洋平台消防水管线的内防腐性能,延长管线的使用寿命,采用一种新型柔性陶瓷涂料( CeRam-Kote 54)内涂技术,对某海洋平台消防水管线进行内防腐施工,并对该施工技术的要求和检验控制难点、要点进行总结,结果表明,柔性陶瓷内涂技术较传统的管线防腐技术有明显的优势,且施工简便,可广泛应用于海洋平台消防水管线。

  11. Design, Implementation, and Verification of the Reliable Multicast Protocol. Thesis

    Science.gov (United States)

    Montgomery, Todd L.

    1995-01-01

    This document describes the Reliable Multicast Protocol (RMP) design, first implementation, and formal verification. RMP provides a totally ordered, reliable, atomic multicast service on top of an unreliable multicast datagram service. RMP is fully and symmetrically distributed so that no site bears an undue portion of the communications load. RMP provides a wide range of guarantees, from unreliable delivery to totally ordered delivery, to K-resilient, majority resilient, and totally resilient atomic delivery. These guarantees are selectable on a per message basis. RMP provides many communication options, including virtual synchrony, a publisher/subscriber model of message delivery, a client/server model of delivery, mutually exclusive handlers for messages, and mutually exclusive locks. It has been commonly believed that total ordering of messages can only be achieved at great performance expense. RMP discounts this. The first implementation of RMP has been shown to provide high throughput performance on Local Area Networks (LAN). For two or more destinations a single LAN, RMP provides higher throughput than any other protocol that does not use multicast or broadcast technology. The design, implementation, and verification activities of RMP have occurred concurrently. This has allowed the verification to maintain a high fidelity between design model, implementation model, and the verification model. The restrictions of implementation have influenced the design earlier than in normal sequential approaches. The protocol as a whole has matured smoother by the inclusion of several different perspectives into the product development.

  12. Pixel Based Off-line Signature Verification System

    Directory of Open Access Journals (Sweden)

    Anik Barua

    2015-01-01

    Full Text Available The verification of handwritten signatures is one of the oldest and the most popular authentication methods all around the world. As technology improved, different ways of comparing and analyzing signatures become more and more sophisticated. Since the early seventies, people have been exploring how computers can fully take over the task of signature verification and tried different methods. However, none of them is satisfactory enough and time consuming too. Therefore, our proposed pixel based offline signature verification system is one of the fastest and easiest ways to authenticate any handwritten signature we have ever found. For signature acquisition, we have used scanner. Then we have divided the signature image into 2D array and calculated the hexadecimal RGB value of each pixel. After that, we have calculated the total percentage of matching. If the percentage of matching is more than 90, the signature is considered as valid otherwise invalid. We have experimented on more than 35 signatures and the result of our experiment is quite impressive. We have made the whole system web based so that the signature can be verified from anywhere. The average execution time for signature verification is only 0.00003545 second only.

  13. Design and Verification of Critical Pressurised Windows for Manned Spaceflight

    Science.gov (United States)

    Lamoure, Richard; Busto, Lara; Novo, Francisco; Sinnema, Gerben; Leal, Mendes M.

    2014-06-01

    The Window Design for Manned Spaceflight (WDMS) project was tasked with establishing the state-of-art and explore possible improvements to the current structural integrity verification and fracture control methodologies for manned spacecraft windows.A critical review of the state-of-art in spacecraft window design, materials and verification practice was conducted. Shortcomings of the methodology in terms of analysis, inspection and testing were identified. Schemes for improving verification practices and reducing conservatism whilst maintaining the required safety levels were then proposed.An experimental materials characterisation programme was defined and carried out with the support of the 'Glass and Façade Technology Research Group', at the University of Cambridge. Results of the sample testing campaign were analysed, post-processed and subsequently applied to the design of a breadboard window demonstrator.Two Fused Silica glass window panes were procured and subjected to dedicated analyses, inspection and testing comprising both qualification and acceptance programmes specifically tailored to the objectives of the activity.Finally, main outcomes have been compiled into a Structural Verification Guide for Pressurised Windows in manned spacecraft, incorporating best practices and lessons learned throughout this project.

  14. Design of Bogie Anti-corrosive Thick Coating Intense Radiation Curing Technology and Equipment%浅析转向架防腐厚涂层强辐射固化工艺及设备设计

    Institute of Scientific and Technical Information of China (English)

    于喜年; 赵月红; 刘军

    2011-01-01

    In order to solve the problem on bogie anti-corrosive thick coating curing,then the thickness of anti-corrosion coating 250 μm or/about and the thickness of general dry film and 5~8 kg limited of scraping putty weight were required in accordance with relevant standards and specifications,as requlated with anti-corrosive thickness.Therefore,the still high quality on welding bogie was proposed and reguested.Analysis of bogie anti-corrosion thick coating paint,curing technology and optimal combination of special anti-corrosive coatings on the surface of high speed bogie was made,which is favourable for tech-equipment and process arrangement and coat infense radiation curing.Short-wave radiation heater is the key component of the coating to be cured.A special combination of structural design by elliptical surface and parabolic surface was adopted.It is more conducive to deep directional radiation which makes the solvent in the bottom of anti-corrosive coating evaporate quickly as a result of strong coating adhesion.Therefore short-wave radiation heater is more suitable for curing the thick coating of wheel axis.Intense radiation curing equipment,parametric design and its virtual assembly provide quick and easy reference in design of anti-corrosive coating curing equipment to produce other relevant products for different manufactures being concerned.%为解决转向架防腐厚涂层固化问题,依照相关标准和规范,对防腐涂层厚度作出规定,要求总干膜厚度为250μm左右,并对腻子的刮涂重量限制在5~8 kg以内,对转向架的焊接质量提出了更高的要求;分析了转向架防腐厚涂层涂覆、固化工艺以及高速动车转向架专用防腐涂料的最优组合,有利于涂层强辐射固化工艺设计和工艺过程安排;短波辐射加热器为涂层固化的关键部件,采用抛物面与椭圆面组合的特殊结构设计,更有利于深层定向辐射,使防腐涂层的底部溶剂迅速挥发,增强了涂层的附

  15. Permeation Barrier Coatings for the Helical Heat Exchanger

    Energy Technology Data Exchange (ETDEWEB)

    Korinko, P.S.

    1999-05-26

    A permeation barrier coating was specified for the Helical Heat Exchanger (HHE) to minimize contamination through emissions and/or permeation into the nitrogen system for ALARA reasons. Due to the geometry of the HHE, a special coating practice was needed since the conventional method of high temperature pack aluminization was intractable. A survey of many coating companies was undertaken; their coating capabilities and technologies were assessed and compared to WSRC needs. The processes and limitations to coating the HHE are described. Slurry coating appears to be the most technically sound approach for coating the HHE.

  16. IN-SITU SYNTHETIC TiB2 PARTICULATE REINFORCED METAL MATRIX COMPOSITE COATING ON AA2024 ALUMINUM ALLOY BY LASER CLADDING TECHNOLOGY

    OpenAIRE

    JIANG XU; YIDE KAN; WENJIN LIU

    2005-01-01

    In order to improve the wear resistance of aluminum alloy, in-situ synthesized TiB2 and Ti3B4 peritectic composite particulate reinforced metal matrix composite, formed on a 2024 aluminum alloy by laser cladding with a powder mixture of Fe-coated Boron, Ti and Al, was successfully achieved using 3-KW CW CO2 laser. The chemical composition, microstructure and phase structure of the composite clad coating were analyzed by energy dispersive X-ray spectroscopy (EDX), SEM, AFM and XRD. The typical...

  17. 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,…

  18. Recycling of Waste Residue and Treatment Technology for Waste Water and Gas during the Production and Painting of Waterborne Coatings%水性涂料废渣利用及废水废气处理技术

    Institute of Scientific and Technical Information of China (English)

    彭开美; 涂伟萍

    2015-01-01

    The treatment technology of waste residue, waste water and waste gas during production and painting of waterborne coatings was analyzed. The treatment methods are selected based on the characteristics of the wastes.%对水性涂料的废渣、废水、废气的产生、处理方法及回收利用技术进行了分析,指出应根据产生的废物的特点,选择合适的处理方法。

  19. Protective Coatings

    Science.gov (United States)

    1980-01-01

    General Magnaplate Corporation's pharmaceutical machine is used in the industry for high speed pressing of pills and capsules. Machine is automatic system for molding glycerine suppositories. These machines are typical of many types of drug production and packaging equipment whose metal parts are treated with space spinoff coatings that promote general machine efficiency and contribute to compliance with stringent federal sanitation codes for pharmaceutical manufacture. Collectively known as "synergistic" coatings, these dry lubricants are bonded to a variety of metals to form an extremely hard slippery surface with long lasting self lubrication. The coatings offer multiple advantages; they cannot chip, peel or be rubbed off. They protect machine parts from corrosion and wear longer, lowering maintenance cost and reduce undesired heat caused by power-robbing friction.

  20. Graphene Coatings

    DEFF Research Database (Denmark)

    Stoot, Adam Carsten; Camilli, Luca; Bøggild, Peter

    2014-01-01

    Owing to its remarkable electrical and mechanical properties, graphene has been attracting tremendous interest in materials science. In particular, its chemical stability and impermeability make it a promising protective membrane. However, recent investigations reveal that single layer graphene...... cannot be used as a barrier in the long run, due to galvanic corrosion phenomena arising when oxygen or water penetrate through graphene cracks or domain boundaries. Here, we overcome this issue by using a multilayered (ML) graphene coating. Our lab- as well as industrial-scale tests demonstrate that ML...... that graphene can still be a relevant candidate for thin coatings....

  1. Technology of ultrasonic-electroless plating Ni-P-SiC nanocomposite coating%超声波-化学镀Ni-P-SiC纳米复合镀层的工艺研究

    Institute of Scientific and Technical Information of China (English)

    马春阳; 吴蒙华; 曲智家

    2011-01-01

    Ni-P-SiC nanocomposite coatings were prepared by ultrasonic-electroless plating on surface of 45 steel substrate. Through orthogonal experiment, the technology parameters of plating Ni-P-SiC nanocomposite coatings were optimized and the hest addition amount of SiC nanoparticles. ultrasonic power, temperature of plating liquid and pH value were determined. The microstructure of the coatings was observed and analysed by scanning electron microscopy ( SEM) and atomic force microscopy ( AFM) .%采用超声波-化学镀的方法,在45钢基体表面制备Ni-P-SiC纳米复合镀层.利用正交试验法对制备Ni-P-SiC纳米复合镀层的工艺参数进行优化,并确定SiC纳米粒子的加入量、超声波功率、复合镀液的温度以及pH值.最后,利用扫描电镜(SEM)和原子力显微镜(AFM)对复合镀层的显微组织形貌进行观察和分析.

  2. Test/QA Plan For Verification Of Anaerobic Digester For Energy Production And Pollution Prevention

    Science.gov (United States)

    The ETV-ESTE Program conducts third-party verification testing of commercially available technologies that improve the environmental conditions in the U.S. A stakeholder committee of buyers and users of such technologies guided the development of this test on anaerobic digesters...

  3. Test/QA Plan For Verification Of Anaerobic Digester For Energy Production And Pollution Prevention

    Science.gov (United States)

    The ETV-ESTE Program conducts third-party verification testing of commercially available technologies that improve the environmental conditions in the U.S. A stakeholder committee of buyers and users of such technologies guided the development of this test on anaerobic digesters...

  4. 基于水基反应成膜技术的聚合物包膜肥料的研制%Development of water-borne polymer coated fertilizer using reacted layer technology

    Institute of Scientific and Technical Information of China (English)

    申亚珍; 杜昌文; 周健民; 王火焰; 陈小琴

    2009-01-01

    Three coating materials of silicones-acrylate emulsions(GA-1710、SD-528、SD-5281) were used to develop model membrane of polymer coated fertilizer through chemical modification (reacted layer technology). The nutrient diffusion property of model membrane was studied, and the polymer coated urea were developed; the release profiles of urea from the polymer coated urea were detected, and the coated membranes was characaterized using mid-infrared photoacoustic spectroscopy. The results showed that after chemical modification of crosslinker the silicones-acrylate emulsions had excellent properties of film-forming and urea-diffusing, which was suitable for the development of polymer coated fertilizer; the style of urea release was significantly different for different silicones-acrylate emulsion, and the release style of "S" was observed for GA-1710, and "L" for SD-528 and SD-5281. The slow release effects of urea were good for coated materials of GA-1710 and SD-528, and the release time in static water was 30 days, while the slow release effect for SD-5281 was poor, and further chemical modification should be made. Therefore, water-borne silicones-acrylate emulsion combining reacted layer technology showed great application potential in the development of water based polymer coated fertilizers.%以3种水基硅丙乳液(SD-528、SD-5281和GA-1710)为材料,利用水基反应成膜技术对这3种材料进行化学改性,制备了聚合物包膜肥料模型膜;研究了模型膜的养分扩散性能,在此基础上研制了水基聚合物包膜肥料;测定了包膜肥料养分释放曲线,并利用红外光声光谱对聚合物膜进行原位表征.结果表明,通过化学交联改性,硅丙基模型膜具有优良的成膜性和扩散性能,不同的乳液对包膜尿素的缓释效果影响显著;GA-1710和SD-528的缓释效果较好,在静态水中的释放时间可达到30 d,而SD-5281缓释性能较差,需要做进一步的化学改性;不同的乳液类型制

  5. Evolution of the Automotive Body Coating Process—A Review

    Directory of Open Access Journals (Sweden)

    Nelson K. Akafuah

    2016-06-01

    Full Text Available Automotive coatings and the processes used to coat automobile surfaces exemplify the avant-garde of technologies that are capable of producing durable surfaces, exceeding customers’ expectations of appearance, maximizing efficiency, and meeting environmental regulations. These accomplishments are rooted in 100 years of experience, trial-and-error approaches, technique and technology advancements, and theoretical assessments. Because of advancements directed at understanding the how, why, when, and where of automobile coatings, the progress in controlling droplets and their deposition attributes, and the development of new technologies and paint chemistries, a comprehensive and up-to-date review of automobile coatings and coating technologies was considered to be of value to industrial practitioners and researchers. Overall, the critical performance factors driving the development and use of advanced automotive coatings and coating technologies are (a aesthetic characteristics; (b corrosion protection; (c mass production; (d cost and environmental requirements; and (e appearance and durability. Although the relative importance of each of these factors is debatable, the perfection of any one at the expense of another would be unacceptable. Hence, new developments in automotive coatings are described and discussed in the following review, and then related to improvements in production technologies and paints. Modern automotive coating procedures are also discussed in detail. Finally, an extrapolation into the future of automotive coating is offered with a view of the developments and technologies needed for an increasingly efficient and more sustainable coatings industry.

  6. Calculation of the hydraulic characteristics of the protective coating used in trenchless technologies for the construction and renovation of pipelines to extend their service life

    Directory of Open Access Journals (Sweden)

    Orlov Vladimir

    2017-01-01

    Full Text Available The lifetime of the pipeline, which undergoes trenchless repair by pulling and then fixing various types of internal protective coatings inside, is determined by the strength characteristics of the two-layer structure “old pipeline + internal protective coating”. Hydraulic parameters of internal protective coatings, such as surface roughness and degree of hydrophobicity (water repellency, can play a role in prolonging the life of the repaired pipeline. With a high degree of hydrophobicity of the protective coating, the contact of the transported liquid with the walls of the pipeline during its operation in the non-pressure regime decreases, which leads to a decrease in the negative impact on the walls, in particular, their attrition, interaction with the specific structure of the coating material, which in turn reduces the energy costs when transporting water. Given article deals with a mathematical description of the interaction of the surface structure (with its inherent wetting ability and the transported liquid in a mini-stream created on an inclined open chute imitating the inner surface of a pressureless pipeline. The theoretical positions and methodology for calculating the degree of hydrophobicity are based on research conducted on the basis of frontal and coaxial (along the flow digital photo and video. T

  7. 镍-磷-碳化硅镀层制备工艺的研究%Study on Technology of Nickel-Phosphorus-Silicon Carbide Particle Coating

    Institute of Scientific and Technical Information of China (English)

    宿辉

    2014-01-01

    为了提高化学复合镀层的性能,采用纳米碳化硅颗粒为增强体制备了镍-磷-碳化硅化学复合镀层,研究了温度、pH、搅拌速率对镍-磷-碳化硅镀层沉积速率的影响,确定了最佳施镀工艺:温度为84益、pH值为4.6、搅拌速度为200r·min-1。%In order to improve the properties of electroless composite coating, the Nickel- Phosphorus-Silicon carbide particle coating electroless composite coating added Silicon carbide particle was prepared and various parameters on the Nickel- Phosphorus-Silicon carbide particle coating were studied systematically. The experimental results show that:temperature, pH stirring speed deposition rate had a greater influence. It was confirmd that the temperature was 84℃, the pH was 4.6, the best stirring rate was 200r/mim-1.

  8. Advanced optical coatings for astronomical instrumentation

    Science.gov (United States)

    Pradal, Fabien; Leplan, Hervé; Vayssade, Hervé; Geyl, Roland

    2016-07-01

    Recently Safran Reosc worked and progressed on various thin film technology for: Large mirrors with low stress and stable coatings. Large lens elements with strong curvature and precise layer specifications. Large filters with high spectral response uniformity specifications. IR coatings with low stress and excellent resistance to cryogenic environment for NIR to LWIR domains. Pixelated coatings. Results will be presented and discussed on the basis of several examples.

  9. Press-coating of immediate release powders onto coated controlled release tablets with adhesives.

    Science.gov (United States)

    Waterman, Kenneth C; Fergione, Michael B

    2003-05-20

    A novel adhesive coating was developed that allows even small quantities of immediate-release (IR) powders to be press-coated onto controlled-release (CR), coated dosage forms without damaging the CR coating. The process was exemplified using a pseudoephedrine osmotic tablet (asymmetric membrane technology, AMT) where a powder weighing less than 25% of the core was pressed onto the osmotic tablet providing a final combination tablet with low friability. The dosage form with the adhesive plus the press-coated powder showed comparable sustained drug release rates to the untreated dosage form after an initial 2-h lag. The adhesive layer consisted of an approximately 100- microm coating of Eudragit RL, polyethylene glycol (PEG) and triethyl citrate (TEC) at a ratio of 5:3:1.2. This coating provides a practical balance between handleability before press-coating and good adhesion.

  10. Formal Verification of Continuous Systems

    DEFF Research Database (Denmark)

    Sloth, Christoffer

    2012-01-01

    and the verification procedures should be algorithmically synthesizable. Autonomous control plays an important role in many safety-critical systems. This implies that a malfunction in the control system can have catastrophic consequences, e.g., in space applications where a design flaw can result in large economic...... losses. Furthermore, a malfunction in the control system of a surgical robot may cause death of patients. The previous examples involve complex systems that are required to operate according to complex specifications. The systems cannot be formally verified by modern verification techniques, due......The purpose of this thesis is to develop a method for verifying timed temporal properties of continuous dynamical systems, and to develop a method for verifying the safety of an interconnection of continuous systems. The methods must be scalable in the number of continuous variables...

  11. Program Verification of Numerical Computation

    OpenAIRE

    Pantelis, Garry

    2014-01-01

    These notes outline a formal method for program verification of numerical computation. It forms the basis of the software package VPC in its initial phase of development. Much of the style of presentation is in the form of notes that outline the definitions and rules upon which VPC is based. The initial motivation of this project was to address some practical issues of computation, especially of numerically intensive programs that are commonplace in computer models. The project evolved into a...

  12. Kleene Algebra and Bytecode Verification

    Science.gov (United States)

    2016-04-27

    Bytecode 2005 Preliminary Version Kleene Algebra and Bytecode Verification Lucja Kot 1 Dexter Kozen 2 Department of Computer Science Cornell...first-order methods that inductively annotate program points with abstract values. In [6] we introduced a second-order approach based on Kleene algebra ...form a left-handed Kleene algebra . The dataflow labeling is not achieved by inductively labeling the program with abstract values, but rather by

  13. Regression Verification Using Impact Summaries

    Science.gov (United States)

    Backes, John; Person, Suzette J.; Rungta, Neha; Thachuk, Oksana

    2013-01-01

    Regression verification techniques are used to prove equivalence of syntactically similar programs. Checking equivalence of large programs, however, can be computationally expensive. Existing regression verification techniques rely on abstraction and decomposition techniques to reduce the computational effort of checking equivalence of the entire program. These techniques are sound but not complete. In this work, we propose a novel approach to improve scalability of regression verification by classifying the program behaviors generated during symbolic execution as either impacted or unimpacted. Our technique uses a combination of static analysis and symbolic execution to generate summaries of impacted program behaviors. The impact summaries are then checked for equivalence using an o-the-shelf decision procedure. We prove that our approach is both sound and complete for sequential programs, with respect to the depth bound of symbolic execution. Our evaluation on a set of sequential C artifacts shows that reducing the size of the summaries can help reduce the cost of software equivalence checking. Various reduction, abstraction, and compositional techniques have been developed to help scale software verification techniques to industrial-sized systems. Although such techniques have greatly increased the size and complexity of systems that can be checked, analysis of large software systems remains costly. Regression analysis techniques, e.g., regression testing [16], regression model checking [22], and regression verification [19], restrict the scope of the analysis by leveraging the differences between program versions. These techniques are based on the idea that if code is checked early in development, then subsequent versions can be checked against a prior (checked) version, leveraging the results of the previous analysis to reduce analysis cost of the current version. Regression verification addresses the problem of proving equivalence of closely related program

  14. An overview on novel thermal barrier coatings

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Thermal barrier coatings (TBCs) offer the potential to significantly improve efficiencies of aero engines as well as stationary gas turbines for power generation. On internally cooled turbine parts, temperature gradients of the order of 100-150℃ can be achieved. TBCs, typically consisting of an yttrium stabilized zirconia top coat and a metallic bond coat deposited onto a superalloy substrate, are mainly used to extend lifetime. Further efficiency improvements require TBCs being an integral part of the component which requires reliable and predictable TBC performance. TBCs produced by electron beam physical vapor deposition (EbPVD) or plasma spray (PS) deposition are favored for high performance applications. The paper highlights critical R&D needs for advanced TBC systems with a special focus on reduced thermal conductivity and life prediction needs. To further enhance the efficiency of gas turbines, higher temperature and a longer lifetime of the coating are needed for the next generation of TBCs. This paper presents the development of new materials, new deposition technologies, and new concept for application as novel TBCs. This paper summarizes the basic properties of conventional thermal barrier coatings. Based on our own investigation, we reviewed the progress on materials and technologies of novel thermal barrier coatings. Except yttria stabilized zirconia, other materials such as lanthanum zirconate and rare earth oxides are also promising materials for thermal barrier coatings. Nanostructure thermal barrier coating is presented as a new concept. This paper also summarizes the technologies for depositing the thermal barrier coatings.

  15. HEMISPHERIC CENTER FOR ENVIRONMENTAL TECHNOLOGY

    Energy Technology Data Exchange (ETDEWEB)

    M.A. Ebadian

    1999-04-30

    The final data package has been completed for the Mississippi State University, DIAL FTP Wall Depth Removal Characterization Technology. The package has been sent to DIAL for comments. Work is progressing on completing the transfer of glove boxes and tanks from Rocky Flats to FIU-HCET for the purpose of performing size reduction technology assessments. Vendors are being identified and security measures are being put in place to meet the High Risk Property criteria required by Rocky Flats. The FIU-HCET Technology Assessment Program has been included as one of 11 verification programs across the US and Canada described in the Interstate Technology Regulatory Cooperation (ITRC) document, ''Multi-state Evaluation of Elements Important to the Verification of Remediation Technologies'', dated January 1999. FIU-HCET will also participate in a panel discussion on technology verification programs at the International Environmental Technology Expo '99.

  16. New data structures and algorithms for logic synthesis and verification

    CERN Document Server

    Amaru, Luca Gaetano

    2017-01-01

    This book introduces new logic primitives for electronic design automation tools. The author approaches fundamental EDA problems from a different, unconventional perspective, in order to demonstrate the key role of rethinking EDA solutions in overcoming technological limitations of present and future technologies. The author discusses techniques that improve the efficiency of logic representation, manipulation and optimization tasks by taking advantage of majority and biconditional logic primitives. Readers will be enabled to accelerate formal methods by studying core properties of logic circuits and developing new frameworks for logic reasoning engines. · Provides a comprehensive, theoretical study on majority and biconditional logic for logic synthesis; · Updates the current scenario in synthesis and verification – especially in light of emerging technologies; · Demonstrates applications to CMOS technology and emerging technologies.

  17. SEMI-AUTOMATIC SPEAKER VERIFICATION SYSTEM

    Directory of Open Access Journals (Sweden)

    E. V. Bulgakova

    2016-03-01

    Full Text Available Subject of Research. The paper presents a semi-automatic speaker verification system based on comparing of formant values, statistics of phone lengths and melodic characteristics as well. Due to the development of speech technology, there is an increased interest now in searching for expert speaker verification systems, which have high reliability and low labour intensiveness because of the automation of data processing for the expert analysis. System Description. We present a description of a novel system analyzing similarity or distinction of speaker voices based on comparing statistics of phone lengths, formant features and melodic characteristics. The characteristic feature of the proposed system based on fusion of methods is a weak correlation between the analyzed features that leads to a decrease in the error rate of speaker recognition. The system advantage is the possibility to carry out rapid analysis of recordings since the processes of data preprocessing and making decision are automated. We describe the functioning methods as well as fusion of methods to combine their decisions. Main Results. We have tested the system on the speech database of 1190 target trials and 10450 non-target trials, including the Russian speech of the male and female speakers. The recognition accuracy of the system is 98.59% on the database containing records of the male speech, and 96.17% on the database containing records of the female speech. It was also experimentally established that the formant method is the most reliable of all used methods. Practical Significance. Experimental results have shown that proposed system is applicable for the speaker recognition task in the course of phonoscopic examination.

  18. Software verification and validation for commercial statistical packages utilized by the statistical consulting section of SRTC

    Energy Technology Data Exchange (ETDEWEB)

    Edwards, T.B.

    2000-03-22

    The purpose of this report is to provide software verification and validation for the statistical packages used by the Statistical Consulting Section (SCS) of the Savannah River Technology Center. The need for this verification and validation stems from the requirements of the Quality Assurance programs that are frequently applicable to the work conducted by SCS. The IBM Personal Computer 300PL and 300XL are both Pentium II based desktops. Therefore the software verification and validation in this report is valid interchangeably between both platforms. As new computing platforms, statistical packages, or revisions to existing packages are reevaluated using these new tools, this report is to be revised to address their verification and validation.

  19. Time trend of injection drug errors before and after implementation of bar-code verification system.

    Science.gov (United States)

    Sakushima, Ken; Umeki, Reona; Endoh, Akira; Ito, Yoichi M; Nasuhara, Yasuyuki

    2015-01-01

    Bar-code technology, used for verification of patients and their medication, could prevent medication errors in clinical practice. Retrospective analysis of electronically stored medical error reports was conducted in a university hospital. The number of reported medication errors of injected drugs, including wrong drug administration and administration to the wrong patient, was compared before and after implementation of the bar-code verification system for inpatient care. A total of 2867 error reports associated with injection drugs were extracted. Wrong patient errors decreased significantly after implementation of the bar-code verification system (17.4/year vs. 4.5/year, pcode medication administration is effective for prevention of wrong patient errors. However, ordinary bar-code verification systems are limited in their ability to prevent incorrect drug preparation in hospital wards.

  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. 壳聚糖涂膜保藏技术在卤鹅加工中的应用%Application of Coating Storage Technology with Chitosan in Sauce and Pot-roast Goose Processing

    Institute of Scientific and Technical Information of China (English)

    张晓春; 葛良鹏; 欧秀琼; 景绍红; 杜金平

    2013-01-01

    Study of the composite preserving techniques of sauce and pot-roast gooses were carried out by the coating storage technology with chitosan, natural biologic preservatives, vacuum packaging technology and pasteurized repasteurization. The result showed that the shelf-life of sauce and pot-roast goose could extended to 4 weeks at 30℃-35℃by coating the surface of sauce and pot-roast goose with the solutions containing 1%chitosan,1%Nisin and 0.2%acetic acid, then combined with vacuum packaging, pasteurized repasteurization treatment(80℃-85℃,heating 5 min).%  采用壳聚糖涂膜保藏技术,结合天然生物防腐剂、真空包装及低温二次杀菌技术,对卤鹅综合保鲜技术进行了研究.结果表明:利用复配的壳聚糖涂膜液(含1%壳聚糖、1%Nisin和0.2%醋酸)对卤鹅表面作涂膜,然后真空包装,低温二次杀菌(80℃~85℃,5 min)处理,卤鹅在常温下(30℃~35℃)的货架期可达到4周.

  2. Superelastic Orthopedic Implant Coatings

    Science.gov (United States)

    Fournier, Eric; Devaney, Robert; Palmer, Matthew; Kramer, Joshua; El Khaja, Ragheb; Fonte, Matthew

    2014-07-01

    The demand for hip and knee replacement surgery is substantial and growing. Unfortunately, most joint replacement surgeries will fail within 10-25 years, thereby requiring an arduous, painful, and expensive revision surgery. To address this issue, a novel orthopedic implant coating material ("eXalt") has been developed. eXalt is comprised of super elastic nitinol wire that is knit into a three-dimensional spacer fabric structure. eXalt expands in vivo to conform to the implantation site and is porous to allow for bone ingrowth. The safety and efficacy of eXalt were evaluated through structural analysis, mechanical testing, and a rabbit implantation model. The results demonstrate that eXalt meets or exceeds the performance of current coating technologies with reduced micromotion, improved osseointegration, and stronger implant fixation in vivo.

  3. Sum-Up of Productive Technology of Deacetylated Chitin-Coated Endoplasm Slow-Release Fertilizers%壳聚糖包膜内质缓释肥料生产技术总结

    Institute of Scientific and Technical Information of China (English)

    徐文峰; 黄滨

    2012-01-01

    壳聚糖包膜内质缓释肥料是一种由内质型缓释肥与包膜型控释肥技术相结合而成的新型缓释肥料,以控制肥料养分释放、流失和挥发为切入点,工艺技术简单,易于嫁接现有肥料生产工艺.介绍了壳聚糖包膜内质缓释肥料的研发背景、生产工艺、形成机理、技术创新点、产品质量标准、产品特点.针对壳聚糖包膜内质缓释肥料尚存在的一些问题,提出今后进一步研究与应用的方向.%The deacetylated chitin-coated endoplasm slow-release fertilizer is a new type of slow-release fertilizer made by a combination of technologies for endoplasm slow-release fertilizers and coated control-release fertilizers, with the control of fertilizer nutrient release, loss and volatilization as the cut-in point, the process is simple and easily grafted to available fertilizer productive technology. A description is given of the research and development of the fertilizer, its production technology, formation mechanism, technological innovation, product quality standard, and product characteristics, In the light of some problems that still remain, the direction tor further research and application is proposed.

  4. Cathodic phosphate coating containing nano zinc particles on magnesium alloy

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    A technology for preparation of a cathodic phosphate coating mainly containing nano metallic zinc particles and phosphate compounds on magnesium alloy was developed.The influence of cathodic current density on the microstructure of the cathodic phosphate coating Was investigated.The results show that the crystals of the coating are finer and the microstructures of the outer surface of the coatings are zigzag at the cathodic density of 0.2-0.5 A/dm2.The content of nano metallic zinc particles in the coating decreases with the increase of the thickness of the coatings and tends to be zero when the coating thickness is 4.14 μm.The cathodic phosphate coating was applied to be a transition coating for improving the adhesion between the paints and the magnesium alloys.The formation mechanism of the cathodic phosphate coating was investigated as well.

  5. Sol-Gel Derived Hafnia Coatings

    Science.gov (United States)

    Feldman, Jay D.; Stackpoole, Mairead; Blum, Yigal; Sacks, Michael; Ellerby, Don; Johnson, Sylvia M.; Venkatapathy, Ethiras (Technical Monitor)

    2002-01-01

    Sol-gel derived hafnia coatings are being developed to provide an oxidation protection layer on ultra-high temperature ceramics for potential use in turbine engines (ultra-efficient engine technology being developed by NASA). Coatings using hafnia sol hafnia filler particles will be discussed along with sol synthesis and characterization.

  6. Innovative Coatings Potentially Lower Facility Maintenance Costs

    Science.gov (United States)

    2013-01-01

    Through extensive testing at Stennis Space Center, Nanocepts Inc. of Lexington, Kentucky, received key validation of the effectiveness of its photocatalytic coatings. Now a NASA Dual Use Technology partner, the company s commercial coatings offer unique environmental and medical benefits, and their self-cleaning properties help limit grime buildup on buildings.

  7. Fingerprint verification based on wavelet subbands

    Science.gov (United States)

    Huang, Ke; Aviyente, Selin

    2004-08-01

    Fingerprint verification has been deployed in a variety of security applications. Traditional minutiae detection based verification algorithms do not utilize the rich discriminatory texture structure of fingerprint images. Furthermore, minutiae detection requires substantial improvement of image quality and is thus error-prone. In this paper, we propose an algorithm for fingerprint verification using the statistics of subbands from wavelet analysis. One important feature for each frequency subband is the distribution of the wavelet coefficients, which can be modeled with a Generalized Gaussian Density (GGD) function. A fingerprint verification algorithm that combines the GGD parameters from different subbands is proposed to match two fingerprints. The verification algorithm in this paper is tested on a set of 1,200 fingerprint images. Experimental results indicate that wavelet analysis provides useful features for the task of fingerprint verification.

  8. A Multifunctional Coating for Autonomous Corrosion Control

    Science.gov (United States)

    Calle, Luz M.; Li, Wenyan; Buhrow, Jerry W.; Jolley, Scott t.

    2011-01-01

    Nearly all metals and their alloys are subject to corrosion that causes them to lose their structural integrity or other critical functionality. Protective coatings are the most commonly used method of corrosion control. However, progressively stricter environmental regulations have resulted in the ban of many commercially available corrosion protective coatings due to the harmful effects of their solvents or corrosion inhibitors. This work concerns the development of a multifunctional smart coating for the autonomous control of corrosion. This coating is being developed to have the inherent ability to detect the chemical changes associated with the onset of corrosion and respond autonomously to indicate it and control it. The multi-functionality of the coating is based on microencapsulation technology specifically designed for corrosion control applications. This design has, in addition to all the advantages of existing microcapsulation designs, the corrosion controlled release function that triggers the delivery of corrosion indicators and inhibitors on demand, only when and where needed. Microencapsulation of self-healing agents for autonomous repair of mechanical damage to the coating is also being pursued. Corrosion indicators, corrosion inhibitors, as well as self-healing agents, have been encapsulated and dispersed into several paint systems to test the corrosion detection, inhibition, and self-healing properties of the coating. Key words: Corrosion, coating, autonomous corrosion control, corrosion indication, corrosion inhibition, self-healing coating, smart coating, multifunctional coating, microencapsulation.

  9. Design and Verification Guidelines for Vibroacoustic and Transient Environments

    Science.gov (United States)

    1986-01-01

    Design and verification guidelines for vibroacoustic and transient environments contain many basic methods that are common throughout the aerospace industry. However, there are some significant differences in methodology between NASA/MSFC and others - both government agencies and contractors. The purpose of this document is to provide the general guidelines used by the Component Analysis Branch, ED23, at MSFC, for the application of the vibroacoustic and transient technology to all launch vehicle and payload components and payload components and experiments managed by NASA/MSFC. This document is intended as a tool to be utilized by the MSFC program management and their contractors as a guide for the design and verification of flight hardware.

  10. Refractory Coated/Lined Low Density Structures Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This project addresses the development of refractory coated or lined low density structures applicable for advanced future propulsion system technologies. The...

  11. Study of sintering behavior of vapor forms of 1-octanethiol coated copper nanoparticles for application to ink-jet printing technology.

    Science.gov (United States)

    Kwon, Jinhyeong; Park, Shinyoung; Haque, Md Mominul; Kim, Young-Seok; Lee, Caroline Sunyong

    2012-04-01

    Sub-50 nm copper nanoparticles coated with sub-5 nm 1-octanethiol layer for oxidation inhibition were examined to confirm the 1-octanethiol removal temperature as the sub-50 nm copper nanoparticles are sintered. As a result, 1-octanethiol Self-Assembled Multi-layers (SAMs) on sub-50 nm copper nanoparticles were successfully removed before sintering of copper nanoparticles so that a high density of copper line could be obtained. Finally, the line resistivity was measured and compared to verify the effect of sintering in different atmospheres. As a result, electrical resistivity of the copper pattern sintered in hydrogen atmosphere was measured at 6.96 x 10(-6) ohm-cm whereas that of the copper pattern sintered in mixed gas atmosphere was measured at 2.62 x 10(-5) ohm-cm. Thus, sintering of copper patterns was successfully done to show low electrical resistivity values. Moreover, removal of 1-octanethiol coating after sintering process was confirmed using X-ray photoelectron spectroscopy (XPS) analysis. By showing no sulfur content, XPS results indicate that 1-octanethiol is completely removed. Therefore, the vapor form of 1-octanethiol coating layers can be safely used as an oxidation inhibition layer for low temperature sintering processes and ink-jet applications.

  12. Automated verification of flight software. User's manual

    Science.gov (United States)

    Saib, S. H.

    1982-01-01

    (Automated Verification of Flight Software), a collection of tools for analyzing source programs written in FORTRAN and AED is documented. The quality and the reliability of flight software are improved by: (1) indented listings of source programs, (2) static analysis to detect inconsistencies in the use of variables and parameters, (3) automated documentation, (4) instrumentation of source code, (5) retesting guidance, (6) analysis of assertions, (7) symbolic execution, (8) generation of verification conditions, and (9) simplification of verification conditions. Use of AVFS in the verification of flight software is described.

  13. Wind-farm power performance verification

    Energy Technology Data Exchange (ETDEWEB)

    Dutilleux, P. [DEWI German Wind Energy Institute, Wilhelmshaven (Germany)

    2005-07-01

    Details of wind farm power performance verification procedures were presented. Verifications were performed at the DEWI test site at Wilhelmhaven, Germany. Types of power performance guarantees included power performance of individual turbines with IEC verification measurement, and Nacelle anemometer verification. In addition, availability guarantees were examined, as well as issues concerning energy production guarantees of complete wind farms in relation to nearby meteorology masts. An evaluation of power curve verification measurements was presented as well as measurement procedures relating to IEC standards. Methods for Nacelle anemometry verification included calibration of the anemometer; documentation of its exact position and chain signal; and end-to-end calibration from sensor to SCADA data base. Classification of anemometers included impact of dynamical effects; and influence on annual energy production. An example of a project for performance verification of a wind farm with 9 identical wind turbines was presented. The significance of status signals was discussed, as well as alternative methods for power-curve measurements. Evaluation procedures for energy yield and power curve verifications were presented. The upcoming set of IEC standards concerning power curve measurements was discussed. Various alternative verification procedures for wind farm power performance were reviewed. refs., tabs., figs.

  14. The SeaHorn Verification Framework

    Science.gov (United States)

    Gurfinkel, Arie; Kahsai, Temesghen; Komuravelli, Anvesh; Navas, Jorge A.

    2015-01-01

    In this paper, we present SeaHorn, a software verification framework. The key distinguishing feature of SeaHorn is its modular design that separates the concerns of the syntax of the programming language, its operational semantics, and the verification semantics. SeaHorn encompasses several novelties: it (a) encodes verification conditions using an efficient yet precise inter-procedural technique, (b) provides flexibility in the verification semantics to allow different levels of precision, (c) leverages the state-of-the-art in software model checking and abstract interpretation for verification, and (d) uses Horn-clauses as an intermediate language to represent verification conditions which simplifies interfacing with multiple verification tools based on Horn-clauses. SeaHorn provides users with a powerful verification tool and researchers with an extensible and customizable framework for experimenting with new software verification techniques. The effectiveness and scalability of SeaHorn are demonstrated by an extensive experimental evaluation using benchmarks from SV-COMP 2015 and real avionics code.

  15. PALMPRINT VERIFICATION USING INVARIANT MOMENTS BASED ON WAVELET TRANSFORM

    Directory of Open Access Journals (Sweden)

    Inass SH. Hussein

    2014-01-01

    Full Text Available Data security is one of the important issues among computer users. Data security can prevent fraudulent users from accessing an individual’s personal data. The biometrics recognition as one of the most important parts in the security of the data and the application of computer vision. The biometrics is the authentication method used in a wide variety of applications such as e-banking, e-commerce, e-government and many others. A biometric system is one which requires the recognition of a pattern, whereby it enables the differentiation of features from one individual to another. Biometric technologies, thus may be defined as the automated methods of identifying, or authenticating, the identity of a living person based on physiological or behavioral traits. This study emphasizes palmprint recognition, which provides a wide deployment range of authentication methods. The palmprint contains principal lines, wrinkles, fine lines, ridges and surface area; thus the palmprint of person differs from one to another. Previous researchers have difficulty extracting the features of a palm print, because of the effects of rotation, translation and scaling changes and the accuracy rate of verification performance needs to be improved. The aim of this study is to extract shape features using an invariant moments algorithm based on wavelet transform and identify the person’s verification. This model has shown a promising results without the effects of rotation, translation and scaling of objects, because it is associated with the use of a good description of shape features. This system has been tested using databases from the Indian Institute of Technology, Kanpur (IITK, by using the False Rejection Rate (FRR and False Acceptance Rate (FAR, we may calculate the accuracy rate of verification. The experiment shows a 97.99% accuracy rate of verification.

  16. Nanostructured diamond coatings for orthopaedic applications.

    Science.gov (United States)

    Catledge, S A; Thomas, V; Vohra, Y K

    2013-01-01

    With increasing numbers of orthopaedic devices being implanted, greater emphasis is being placed on ceramic coating technology to reduce friction and wear in mating total joint replacement components, in order to improve implant function and increase device lifespan. In this chapter, we consider ultra-hard carbon coatings, with emphasis on nanostructured diamond, as alternative bearing surfaces for metallic components. Such coatings have great potential for use in biomedical implants as a result of their extreme hardness, wear resistance, low friction and biocompatibility. These ultra-hard carbon coatings can be deposited by several techniques resulting in a wide variety of structures and properties.

  17. Stresses and Cracks in Surface Coatings

    DEFF Research Database (Denmark)

    Horsewell, Andy

    2000-01-01

    This extended abstract of the talk to be given at the Danish Metallurgical Society, Winter Meeting 1999, gives an outline of the areas of interest in current projects in wear and corrosion resistant coatings at Materials Technology, Technical University of Denmark (IPT, Materialeteknologi, DTU......). It also briefly describes our method of approach in analysing new coating / substrate combinations or new materials processing techniques for producing a given coating. We strive to combine, often in collaboration with others, a fundamental understanding of microstructure, mechanical properties...... and fracture mechanics in order to determine the mechanical stability of engineering coatings for various critical applications....

  18. Formal Verification of UML Profil

    DEFF Research Database (Denmark)

    Bhutto, Arifa; Hussain, Dil Muhammad Akbar

    2011-01-01

    The Unified Modeling Language (UML) is based on the Model Driven Development (MDD) approach which capturing the system functionality using the platform-independent model (PMI) and appropriate domain-specific languages. In UML base system notations, structural view is model by the class, components...... and object diagrams and behavioral view model by the activity, use case, state, and sequence diagram. However, UML does not provide the formal syntax, therefore its semantics is not formally definable, so for assure of correctness, we need to incorporate semantic reasoning through verification, specification...

  19. Formal Verification of NTRUEncrypt Scheme

    Directory of Open Access Journals (Sweden)

    Gholam Reza Moghissi

    2016-04-01

    Full Text Available In this paper we explore a mechanized verification of the NTRUEncrypt scheme, with the formal proof system Isabelle/HOL. More precisely, the functional correctness of this algorithm, in its reduced form, is formally verified with computer support. We show that this scheme is correct what is a necessary condition for the usefulness of any cryptographic encryption scheme. Besides, we present a convenient and application specific formalization of the NTRUEncrypt scheme in the Isabelle/HOL system that can be used in further study around the functional and security analysis of NTRUEncrypt family.

  20. An Effective Fingerprint Verification Technique

    CERN Document Server

    Gogoi, Minakshi

    2010-01-01

    This paper presents an effective method for fingerprint verification based on a data mining technique called minutiae clustering and a graph-theoretic approach to analyze the process of fingerprint comparison to give a feature space representation of minutiae and to produce a lower bound on the number of detectably distinct fingerprints. The method also proving the invariance of each individual fingerprint by using both the topological behavior of the minutiae graph and also using a distance measure called Hausdorff distance.The method provides a graph based index generation mechanism of fingerprint biometric data. The self-organizing map neural network is also used for classifying the fingerprints.