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Displaying 13101 - 13125 of 74220

Technology Trends Assessment - Thin Film Thermal Conductivity Measurement

February 19, 2017
Author(s)
A Feldman
The purpose of this document is to propose a standard procedure for measuring the thermal conductivity of insulating thin films on silicon substrates. The initial part of the assessment is a review of several measurement methods that have been used to

Telling Time

February 19, 2017
Author(s)
Jonathan E. Hardis
In Low-Tech Blues [June], you note that we are surrounded by clocks, but lament the lack of systems to set them automatically. Our job is to help fix that. Your readers can use our time servers (www. Bldrdoc.gov/timefreq/service/its.htm) to automatically

Testing of an Alternate Smoking Material

February 19, 2017
Author(s)
Richard Gann
ASTM test method E2187-02b is not appropriate for measuring the ignition strength of a cigarette-shaped smoking material that does not have a tobacco column that burns during smoking. This letter reports a measurement of the relative ignition strength of

The 102nd Annual Meeting of the American Ceramic Society

February 19, 2017
Author(s)
Winnie Wong-Ng
Gateway to the New Millennium was the theme of the 102nd annual meeting of the American Ceramic Society which took place in St. Louis, Missouri from April 29 to May 3, 2000. A brief description of both the scientific and social program of this meeting is

The 1999 Materials Research Society (MRS) Fall Meeting

February 19, 2017
Author(s)
Winnie Wong-Ng
The 1999 Material Research Society Fall Meeting took place in Boston Copley Plaza from November 26 to December 3. This was the first time that MRS has used the spacious Hynes Convention Center as the primary meeting site, with the Marriott Hotel as an

The 48th Annual Denver X-Ray Conference

February 19, 2017
Author(s)
Winnie Wong-Ng
The 48th Annual Denver X-ray Conference took place at Sheraton Steamboat Resort, Colorado, from August 2-6, 1999. This meeting was well attended, with a combined number of 650 conference attendees and exhibitors. It was supported by the International

The AASHTO Accreditation Program: Serving the HMA Industry

February 19, 2017
Author(s)
Robert A. Lutz, J B. Hewston, D Savage, Peter Spellerberg
The American Association of State Highway and Transportation Officials (AASHTO) has been accrediting hot mix asphalt testing laboratories under the AASHTO Accreditation Program (AAP) since 1988. Laboratories must satisfy many quality system criteria, as

The ACBM/NIST Computer Modelling Workshop: 1990-1998

February 19, 2017
Author(s)
Edward Garboczi
Introduction to, survey of, and advertisement for the ACBM/NIST Computer Modelling Workshop, over the years 1990-1998. This workshop is to train people in the computational materials science of concrete, as developed at NIST under ACBM. To appear in a bi

The Economic Impact of Manufacturing Extension Centers

February 19, 2017
Author(s)
M A. Ehlen
A recent U.S. Census survey indicates that the two Illinois manufacturing extension centers, affiliated with the national Manufacturing Extension Partnership, have improved the performance of small Illinois firms and the Illinois state economy. Over a two

The Effect of Plowing on Nanofriction

February 19, 2017
Author(s)
Stephen M. Hsu, Z C. Ying
Development of low friction surfaces has become an important issue for the development of reliable devices with moving components. The common way to measure nanofriction is to use a sharp tip sliding on a sample surface. High contact pressure at the tip

The Effects of Nanostructure on the Stability of Nanocomposite Building Materials

February 19, 2017
Author(s)
Marc R. Nyden, Samuel Manzello, Richard H. Harris Jr.
Thermoplastics and composites made from hydrocarbon polymers can improve the affordability, strength-to-weight ratio, and durability of manufactured products. Unfortunately, the use of these materials in buildings and vehicles is limited because of their

The Speed, Grain Boundary Morphology, and Composition Changes Resulting from DIGM

February 19, 2017
Author(s)
John W. Cahn, C M. Elliott, P C. Fife, O Penrose
We use the equations for steady-state diffusion-induced grain boundary motion (DIGM), derived from our phase-field model, [17] to predict the grain boundary morphology and speed of DIGM, as well as the resulting compositions profiles, when the specimen

Thermal Degradation and Flammability Properties of Nanocomposites

February 19, 2017
Author(s)
Takashi Kashiwagi, A B. Morgan, Joseph M. Antonucci, Richard H. Harris Jr., E A. Grulke, J N. Hilding, Jack F. Douglas
Thermal degradation and flammability properties of the two types of nanocomposites with nanosilica and carbon nanotubes were studied. PMMA, poly(metheyl methacrylate), nanocomposites were made by in situ radical polymerization of MMA, methylmethacrylate

Thermal Degradation Studies of Alkyl-Imidazolium Salts and Their Application in Nanocomposites

February 19, 2017
Author(s)
W H. Awad, Jeffrey W. Gilman, Marc R. Nyden, Richard H. Harris Jr., T E. Sutto, J H. Callahan, Paul C. Trulove, H X. DeLong
Increasing the thermal stability of organically modified layered silicates is one of the key points in the successful technical application of polymer layered-silicates nanocomposites on the industrial scale. To circumvent the detrimental effect of the

Thermal Diffusivity of AIN Using the Photothermal Deflection Technique

February 19, 2017
Author(s)
E J. Gonzalez
The thermal conductivity of AIN specimens doped with Y2O3(5 wt.%) was determined using the photothermal deflection technique. The results agree within 10% of measurements previously made using the laser flash method. Thermal measurements on as-fired thin

Thermodynamics and Phase Diagrams

February 19, 2017
Author(s)
Ursula R. Kattner
Thermodynamics is a field of physics and chemistry. It uses mathematics to describe changes in energy and entropy (disorder) of a material that is subject to mechanical, thermal or chemical action. It is most frequently used to describe the conditions that
Displaying 13101 - 13125 of 74220