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Conferences

Ventilation Strategies for U.S. Manufactured Homes

August 1, 2000

Author(s)

S R. Martin, Andrew K. Persily

The HUD Manufactured Home Construction and Safety Standards contain requirements intended to provide adequate levels of outdoor air ventilation in U.S...

Multizone Modeling as an Indoor Air Quality Design Tool

August 1, 2000

Author(s)

Amy Musser

Increased public awareness and changing industry standards have highlighted the importance of indoor air quality in the building design process. At the same...

Status of the Revision of ASHRAE Standard 62

August 1, 2000

Author(s)

Andrew K. Persily

The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) is in the process of revising Standard 62 Ventilation for Acceptable...

Characterization of Polyester Degradation Using Tapping Mode Atomic Force Microscopy

August 1, 2000

Author(s)

Xiaohong Gu, D T. Raghavan, Tinh Nguyen, Mark R. VanLandingham

Tapping mode AFM was used to examine the microstructure of polyester films before and after exposure to an alkaline solution. Bright-colored microgel domains...

Effects of Relative Humidity on Photodegradation of Acrylic Melamine Coatings: A Quantitative Study

August 1, 2000

Author(s)

Tinh Nguyen, Jonathan W. Martin, E Byrd, N Embree

Service life prediction methodology based on correlating short-term performance with outdoor data is not a fundamentally sound approach because the weather...

Percolation Aspects of Cement Paste and Concrete - Properties and Durability

August 1, 2000

Author(s)

Edward J. Garboczi, Dale P. Bentz

Synopsis: Portland cement concrete is a composite material, where the matrix consists of portland cement paste. Cement paste forms from the hydration reaction...

Useful Lead and Bismuth Standards for Quantitative Electron Probe Microanalysis

August 1, 2000

Author(s)

Ryna B. Marinenko, Eric S. Windsor

This is a preliminary study of lead and bismuth selinides and tellurides to determine the usefullness of these materials as Pb and Bi standards for quantitative...

Atomic Force Microscopy Studies of Phase Ordering in Polymer Blends and Clay-Filled Systems

August 1, 2000

Author(s)

V Ferreiro, Jack F. Douglas, Alamgir Karim, G Coulon

Many industrial applications require a control of the morphology of thin polymer films. The morphology of thin polymer films depends on many factors : method of...

Phosphor Imaging Plate Measurement of Electron Scattering in the Environmental Scanning Electron Microscope

August 1, 2000

Author(s)

Scott A. Wight, Cynthia J. Zeissler

Phosphor Imaging Plate Technology is applied to electron beam scattering in the Environmental Scanning Electron Microscope. The plate is exposed to primary and...

Lispix: A Public Domain Scientific Image Analysis Program for the PC and Macintosh

August 1, 2000

Author(s)

David S. Bright, K G Milan

Lispix is a public domain image processing system designed for use by microscopists. It runs on both Windows and Macintosh. Some of its features are described.

Calcium Phosphate Cements: Chemistry, Properties, and Applications

August 1, 2000

Author(s)

Laurence C. Chow

This paper reviews recent studies on self-setting calcium phosphate cements (CPC). Discussions are focused on the cement setting reactions, the products formed...

PC/MAC Image Processing Freeware for Examining Spectral Images

August 1, 2000

Author(s)

David S. Bright

Lispix is a public domain image processing system for Windows and the Macintosh, is applied to exploration of a spectral image of data cube.

Physicochemical Evaluation of Bioactive Polymeric Composites Based on Hybrid Amorphous Calcium Phosphates

August 1, 2000

Author(s)

Joseph M. Antonucci, Drago Skrtic, A W. Hailer, E D. Eanes

Amorphous calcium phosphate (ACP), an important precursor in the biological formation of hydroxyapatite (HAP), has recently been utilized as a bioactive filler...

An Improved Synthesis of Ethyl Alpha-Hydroxymethylacrylate, a Unique Isomeric Analog of HEMA

August 1, 2000

Author(s)

Joseph M. Antonucci, J W. Stansbury, Bruce O. Fowler

HEMA is widely used in dental adhesives, bioactive composites and resin-modified glass ionomer cements. In its polymeric forms it is used in a number of...

Reverberation Chamber Verification Procedures on How to Check if Your Chamber Ain't Broke and Suggestions on How to Fix It If It Is

August 1, 2000

Author(s)

John M. Ladbury

We present three tests for evaluating the agreement between measurements taken in a reverberation chamber and the expected results given by simple statistical...

A Standard Test Course for Urban Search and Rescue Robots

August 1, 2000

Author(s)

Adam S. Jacoff, Elena R. Messina, John Evans

One approach to measuring the performance of intelligent systems is to develop standardized or reproducible tests. These tests may be in a simulated environment...

Search Graph Formation for Minimizing the Complexity of Planning

August 1, 2000

Author(s)

Alberto Lacaze, Stephen B. Balakirsky

A large number of path planning problems are solved by the use of graph based search algorithms. There are a variety of techniques available to optimize the...

Performance Metrics for Intelligent Systems

August 1, 2000

Author(s)

John Evans, Elena R. Messina

Research into intelligent systems and intelligent control is burgeoning. However, there is no consensus on how to define or measure an intelligent system. This...

Time Synchronized Measurements in Cluster Computing Systems

August 1, 2000

Author(s)

Alan Mink, Robert J. Carpenter, M M. Courson

We describe hardware time synchronization instrumentation that we have developed which achieves time synchronization of better than one microsecond. The purpose...

NIST Workshop on Needs for Reference Biomaterials

August 1, 2000

Author(s)

John A. Tesk

On November 13, 1998, a workshop was held at the National Institute of Standards and Technology (NIST) to obtain a clearer assessment of the current needs for...

Quantum Electrodynamics and the Fundamental Constants

August 1, 2000

Author(s)

Peter J. Mohr, Barry N. Taylor

The fundamental constants are evaluated by comparison of the results of critical experiments and the theoretical expressions of these results written in terms...

Calibrated Thermal Microscopy of the Tool-Chip Interface in Machining

August 1, 2000

Author(s)

Howard W. Yoon, Matthew A. Davies, Timothy J. Burns, Michael Kennedy

A critical parameter in predicting tool wear during machining and in accurate computer simulations of machining is the spatially-resolved temperature at the...

Precision Measurement With Gravity

August 1, 2000

Author(s)

J E. Faller

In this paper two questions are addressed: (1) what is precision measurement? And (2) where do ideas come from? To answer these questions, research examples are...

Valence Mapping of Particulate 3D-Transition Metal Oxides Using Energy-Filtered Transmission Electron Microscopy

August 1, 2000

Author(s)

R M. Stroud, J H. Scott

We demonstrate here the feasibility of valence mapping of particulate samples, and discuss the factors that limit quantitative data extraction from the maps...

Mapping Chemically Heterogeneous Polymer System Using Chemical Modification and Atomic Force Microscopy

August 1, 2000

Author(s)

D T. Raghavan, Tinh Nguyen, Mark R. VanLandingham, Xiaohong Gu

Polymer coatings are heterogeneous and often contain nanoscale degradation -susceptible regions. Therefore, mapping and identification of these regions would...

Test Device Directivity for EMC Measurements

August 1, 2000

Author(s)

Galen H. Koepke, David A. Hill, John M. Ladbury

Assessing the Effects of an OATS Shelter; Is ANSI C63.7 Enough?

August 1, 2000

Author(s)

Robert T. Johnk, David R. Novotny, Claude Weil, H. W. Medley

This paper summarizes a recent measurement effort by NIST researchers at an open-area test site (OATS), operated by a large information technology equipment...

A Performance Measurement Environment for Cluster Computing

August 1, 2000

Author(s)

M M. Courson, Alan Mink, G J. Marcais, B Traverse

A number of factors promote frequent running of performance measurement codes for the evaluation and tuning of both applications and platforms. NIST is...

Cessation of Spherulitic Growth in Phase-Separating Polyolefin Blends

August 1, 2000

Author(s)

Haonan Wang, Charles C. Han

The Blends of two statistical copolymers of ethylene/hexene (PEH) and ethylene/butene (PEB) exhibit both phase separation and crystallization transitions. Using...

Shear Orientation of a Visoelastic Polymer-Clay Solution

August 1, 2000

Author(s)

G Schmidt, A Nakatani, Paul Butler, Alamgir Karim, Charles C. Han

The shear orientation of viscoelastic clay-polymer solutions was investigated by means of rheology, flow birefringence (δn) and small-angle neutron scattering...

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