National Institute

The research activity here presented has been carried out at the N.D.T. laboratory of l.S.P.E.S.L. (National Institute for Occupational Safety and Prevention) and it is aimed at the set up of the Stress Pattern Analysis by Measuring Thermal Emission technique [I] applied to pressure vessels. Basically, the SPATE system detects the infrared flux emitted from points resulting from the minute temperature changes in a cyclically stressed structure or component. 

Reliable tables that list many known surface stmetures can be found in [1]. Also, the National Institute of Standards and Teclmology (NIST) maintains databases of surface stmetures and other surface-related infonnation, which can be found at httpsov/srd/surface. htm. 

Yoo C S, Akella J and Nicol M 1996 Chemistry at high pressures and temperatures in-situ synthesis and characterization of p-SijN by DAC x-ray/laser-heating studies Advanced Materials 96 ed M Akaishi et al (Tsukuba National Institute for Research in Inorganic Materials) p 175... 

For an introduction to current research in alkali-atom BEC see tire special issue on BEC in the Journal of Research of the National Institute of Standards and Technology ... 

The authors thank Y. Oono and M. Balsera for invaluable contributions to the joint development of SMD and J. Gullingsrud for many suggestions in the preparation of the manuscript. Images of molecular systems were produced with the program VMD (Humphrey et al., 1996). This work was supported by grants from the National Institute of Health (PHS 5 P41 RR05969-04), the National Science Foundation (BIR-9318159, BIR 94-23827 (EQ)), and the Roy J. Carver Charitable Trust. 

This work has been supported by the U.S. National Science Foundation (grant MCB-9314854) and the U.S. National Institutes of Health s National Center for Research Resources (grant RR08102 to the UNC/Duke Computational Structural Biology Resource). 

This research was supported by grants from the Israel Science Foundation, Israel Science Ministry and the National Institutes of Health to RE. 

National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia e-mail dusa kihp5.cmm.ki.si... 

We happily acknowledge Dr. Tom Darden from the National Institute for Environmental Health Sciences for access to and help in parallelizing PME. 

The primary developers of NAMD 1 were M. Nelson, W. Humphrey, A. Gursoy, A. Dalke and R. Brunner. The primary developers of NAMD 2 were J. Phillips, A. Shinozaki, R. Brunner, N. Krawetz, M. Bhandarkar and A. Gursoy. NAMD development was performed at the National Institutes of Health Resource for Concurrent Biological Computing under the supervision of principal investigators L.V. Kale, R. Skeel, and K. Schulten. This work was... 

In 1964 Douglas Cart Engelbart (Stanford Research Institute in California) developed the mouse as an input device and Bill Enghsh built its prototype from a carved block of wood with a single red button. Shortly thereafter, the mouse was used at the Lister Hill Center of the National Institutes of Health for the input of chemical structures. 

WebBook National Institute of Standards and Technology thermochem., spectra numeric 22 300 substances online http //ivebboo- ik.nist.gov... 

Several excellent print collections of spectra are available but are beyond the budgets of most col lege libraries Fortunately vast numbers of NMR IR and mass spectra are freely accessible via the Spectral Data Base System (SDBS) maintained by the Japanese National Institute of Advanced Industrial Science and Technology at... 

The International Human Genome Sequencing Consor tium was headed by Francis S Collins of the U S National Institutes of Health J Craig Venter led the Celera effort... 

NIST, National Institute for Science and Technology (formerly the National Bureau of Standards, U.S.). t A.P.I. is the American Petroleum Institute. 

Analysis sheet for Simulated Rainwater (SRM 2694a). Adapted from NIST Special Publication 250 Standard Reference Materials Catalog 1995-96, p. 54 U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology. 

The accuracy of a spectrophotometer can be checked by measuring absorbances for a series of standard dichromate solutions that can be obtained in sealed cuvettes from the National institute of Standards and Technology. Absorbances are measured at 257 nm and compared with the accepted values. The results obtained when testing a newly purchased spectrophotometer are shown here. Determine if the tested spectrophotometer is accurate at a = 0.05. 

Calibrating the electrode presents a third complication since a standard with an accurately known activity for H+ needs to be used. Unfortunately, it is not possible to calculate rigorously the activity of a single ion. For this reason pH electrodes are calibrated using a standard buffer whose composition is chosen such that the defined pH is as close as possible to that given by equation 11.18. Table 11.6 gives pH values for several primary standard buffer solutions accepted by the National Institute of Standards and Technology. 

Analysis of Standards The analysis of a standard containing a known concentration of analyte also can be used to monitor a system s state of statistical control. Ideally, a standard reference material (SRM) should be used, provided that the matrix of the SRM is similar to that of the samples being analyzed. A variety of appropriate SRMs are available from the National Institute of Standards and Technology (NIST). If a suitable SRM is not available, then an independently prepared synthetic sample can be used if it is prepared from reagents of known purity. At a minimum, a standardization of the method is verified by periodically analyzing one of the calibration standards. In all cases, the analyte s experimentally determined concentration in the standard must fall within predetermined limits if the system is to be considered under statistical control. 

Because variations in accurate isotope ratio measurements typically concern only a few parts per 1000 by mass and there are no universal absolute ratios, it is necessary to define some standards. For this purpose, samples of standard substances are produced and made available at two major centers IAEA (International Atomic Energy Authority, U.K.) and NIST (National Institute for Standards and Technology, U.S.). Standards from other sources are also available. These primary standards can be used as such, or alternative standards can be employed if the primary ones are not available. However, any alternative standards need to be related accurately to the primary ones (see formulae below). For example, the material PDB (PeeDee belemnite), used particularly as a standard for the ratio of isotopes, is no longer readily available, and a new standard, VPDB,... 

The National Institutes of Health-EPA mass spectral library is used to identify analyzed components of a sample by comparing their mass spectra with those of authentic specimens held in the library. 

Standard substances are available from such agencies as the International Atomic Energy Authority (U.K.) and the National Institute for Standards and Technology (U.S.). 

FRACTIONATION,BLOOD - PLASMAFRACTIONATION] (Volll) National Institute for Occupational Safety and Health... 

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