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Displaying 30626 - 30650 of 74274
An outline of the kinds of papers appropriate for an ASTM Symposium on Cleanliness of Medical Implants, May 2005 is presented, with example of the topical areas of interest. Organizations from which papers are sought include:The U.S. Food and drug
This collection of papers relates to the evaluation of the Advanced Technology Program (ATP), the Nation's civilian technology program specifically charged with increasing the competitiveness of U.S. industry and improving the Nation's economy. The program
Literature searches to date have not revealed reports of methacrylated cyclodextrins in dental resins. The purpose of this study was to determine the feasibility of synthesizing methacrylated cyclodextrins, and to test the hypothesis that beta-cyclodextrin
This report describes the World Trade organization (WTO) Agreement on Technical Barriers to Trade (TBT Agreement) activities conducted by the national Institute of Standards and Technology (NIST), for calendar year 1996. NIST received and processed 460
If you read about technetium in the Handbook of Chemistry and Physics (see Technetium at a Glance) you might think you knew all you needed to about its discovery and existence. That s how I felt the first time I had to deal with this rare element. But
Joseph E. Davies, O Hellwig, E E. Fullerton, K Liu
Antiferromagnetically coupled (Co/Pt)/Ru multilayers with perpendicular anisotropy have been shown to exhibit both vertically and laterally correlated magnetization reversal modes. In this work the magnetization reversal of a multilayer film whose layer
Hybrid simulations are widely used in material science to investigate phenomena that require both a large system size and a high level of accuracy in critical regions. The most persistent difficulty lies in bridging between models that are optimized for
The 1998 annual meeting of the American Ceramics Society (ACerS) and exposition represented a unique milestone. It was the beginning of the centennial celebration and it was a once-in-a-lifetime experience for the ACerS members. This very special meeting
The degradation of all classes of cellular RNA is critical for biological function. The enzymes that carry out this function in all organisms are either exo- or endo-specific ribonucleases. of the enzymes found in bacteria, oligoribonuclease is suggested
This document consists of instructional material developed by a private sector contractor for use in training laboratories and laboratory accreditors, esecially in Latin American countries. It describes the process according to ISO/IEC Guide 25 and offers
The Advanced Technology Program (ATP) partners with U.S. businesses in high-risk research to develop enabling technologies with strong potential for economic benefits to the Nation. Universities, non-profit research laboratories, and firms of all sizes
This paper examines the approach to technology diffusion of a public-private partnership program in the United States, the Advanced Technology Program (ATP), that puts industry in the lead and emphasizes spillover effects for national economic benefit. The
The Advanced Technology Program [ATP] partners with U.S. businesses to share the costs of high-risk scientific research aimed at developing enabling technologies with strong potential for broad-based economic benefits. Universities and non-profit research
The five angles which are needed to characterize interfaces between two crystals are reduced to three angles for interfaces between two layer structures with any of the five cylindrical point group symmetries. Two different sets of angles are suggested for
A novel ion beam scattering methodology is described for determining the chemical composition of thin, Si-based low dielectric constant (k) films that typically also contain light elements like O, C, and H. Traditional elastic Rutherford backscattering
The National Institute of Standards and Technology (NIST) has completed its four-year investigation of the World Trade Center disaster. The investigation addressed many aspects of the catastrophe, from occupant egress to factors affecting how long the Twin
The article explains the legal foundation and current relevance of the clause in the U.S. Constitution authorizing Congress to fix the standards of weights and measures.
This brief presentation defines independence as it relates to the corporate structure of a laboratory accreditation body. Requirements are referenced from ISO/IEC Guide 58, ISO/IEC DIS 17011, International Laboratory Accreditation Cooperation ILAC-P1, ANSI
Craze growth has been studied as a function of time after a quench (physical aging) at four different temperatures between 22 degrees C and 60 degrees C. A styrene-acrylonitrile co-polymer (SAN) was tested in stress relaxation conditions. The craze length
The Research Advisory Committee (RAC) at the National Institute of Standards and Technology in its 2000 Annual Report to the NIST Director expressed concern that the NIST Research Library would not be able to meet the research needs of the scientific and
The process for making a NIST Standard Reference Material involves a program of ongoing research followed by specific development and production steps. The decision to address a measurement problem involves consideration of the size of the intended user
The analysis by Scott and Van Konynenburg of the binary Van der Waals mixture for constant excluded volume uncovered the Type-IV phase diagram as a transition between Type-II and Type-III phase diagrams. The common boundary of the regions of Type-II and
In 1925, Noddack, Tacke and Berg reported discovery of element Z = 43, which they named Masurium, based on line identification of x-ray emission spectra from chemically concentrated residues of various U-rich minerals. Their results were disputed and
This paper presents experimental results and theoretical calculations that evaluate the effects of Bi contamination on the solidification behavior of Sn-Pb alloys. The pasty (mushy) range, the type of solidification path, and the microstructure of the