Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Conferences

Wind Effects on High-Rise Buildings: Database-Assisted Design Versus the High-Frequency Force-Balance Technique

February 19, 2017

Author(s)

M Iancovici, Michael A. Riley, Fahim H. Sadek, Emil Simiu

Database-assisted design (DAD) was originally developed for low-rise buildings. In this paper we show that it applies to flexible high-rise buildings as well...

Wind Speeds for the Estimation of World Trade Center Towers' Response

February 19, 2017

Author(s)

William P. Fritz, Fahim H. Sadek, Emil Simiu

Estimates of the World Trade Center (WTC) towers response to wind by two North American wind engineering laboratories differed from each other by almost 40 %. A...

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...

Microstructure-Wear Resistance Relationships for YSZ and Alumina Plasma Sprayed Deposits

February 19, 2017

Author(s)

J Ilavsky, H Boukari

A simple sectioning method was applied to investigate the changes in the wear resistance of two thermally sprayed deposits, two yttrium-stabilized zirconia (YSZ...

Influence of Particle Size on DCPD Hydrolysis and Setting Properties of TTCP/DCPD Cement

February 19, 2017

Author(s)

Limin Sun, Laurence C. Chow, Shozo Takagi, Elena F. Burguera, Stanislav Frukhtbeyn

This study investigated the effects of particle size on the hydrolysis reaction of DCPD at pH 7 and 37 C and on the setting properties of a TTCP/DCPD cement...

Strain-Induced Ferroelectric SrTiO₃ Thin Films Grown Coherently on Si(001): Experiment and Theory

February 19, 2017

Author(s)

Joseph Woicik, Eric L. Shirley, Daniel A. Fischer, S Sambasivan, C R. Ashman, C S. Hellberg, H Li

Ferroelectric crystals possess an electric dipole moment even in the absence of an external electric field. In order for this spontaneous polarization to arise...

X-Ray Absorption Fine-Structure Determination of Ferroelectric Distortion in SrtiO₃ Thin Films grown on Si(001)

February 19, 2017

Author(s)

Joseph Woicik, F S. Aguirre-Tostado, A Herrera-Gomez, R Droopad, Z Yu, D G. Schlom, E Karapetrova, P Zschack, P Pianetta

Polarization-dependent x-ray absorption fine structure together with x-ray diffraction have been used to study the local structure in SrTiO 3 thin films grown...

Characterization of Solid Oxide Fuel Cell Layers by Computed X-Ray Microtomography and Small-Angle Scattering

February 19, 2017

Author(s)

Andrew J. Allen, T A. Dobbins, J Ilavsky, Fu Zhao, A Virkar, J Almer, F DeCarlo

Versatile USAXS (Bonse-Hart) Facility for Advanced Materials Research

February 19, 2017

Author(s)

J Ilavsky, P Jemain, Andrew J. Allen, Gabrielle G. Long

The USAXS facility at UNICAT Sector 33 at the Advanced Photon Source (APS) is a world-class resource for advanced materials research emphasizing full-range...

Relationship Between Microstructure and Wear of Dental Ceramics and Composite Resins

February 19, 2017

Author(s)

V S. Nagarajan, S Jahanmir, B Hockey, Victoria Thompson

The effect of microstructure on the wear mechanisms of glass-ceramics and resin composites was studied. Wear tests on both types of materials were conducted...

Transient Creep Cavity Growth in Structural Ceramics

February 19, 2017

Author(s)

A F. Bower, Tze J. Chuang

Long-term service life of a load-bearing ceramic component such as a turbine blade atelevated temperatures is often controlled by the rates of nucleation and...

New Synchrotron X-Ray Techniques for In-Situ Deformation Studies

February 19, 2017

Author(s)

Lyle E. Levine, R Thomson, Gabrielle G. Long, David R. Black

Many types of defects contribute to local and long-range stresses and strains in materials. These include vacancies, voids, prismatic loops, interstitials...

Phase Equilibria of the High Tc Superconductors in the (Bi, Pb) -SR-Ca-Cu-O System

February 19, 2017

Author(s)

Winnie Wong-Ng, Lawrence P. Cook, W Greenwood, Anthony J. Kearsley

Applications of (Bi,Pb)-Sr-Ca-Cu-O phase equilibria include material synthesis, melt processing and single crystal growth. Both liquidus and subsolidus data are...

Enhancement of Mercuric Iodide Detector Performance Through Crystal Growth in Microgravity: The Roles of Lattice Order

February 19, 2017

Author(s)

B W. Steiner, L van den Berg, U Laor

The hole mobility and carrier lifetime of [alpha] mercuric iodide high energy radiation detectors have been enhanced through crystal growth in microgravity. 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...

Applications of Ceramics for Healthcare: The Future Has Begun

February 19, 2017

Author(s)

Grady S. White

Dramatic improvements in our understanding of how biological systems work, diseases initiate, and illnesses progress have given rise to the expectation that...

Development of Multilayer Analyzer Array Detectors for X-Ray Fluorescence at the Third Generation Synchrotron Source

February 19, 2017

Author(s)

K Zhang, G Rosenbaum, R Liu, G Bunker, C Y. Liu, Daniel A. Fischer

The development of Multilayer Analyzer Array Detector (MADD) for X-ray fluorescence is to eliminate the count rate limitation encountered with the multi-element...

Boundary Lubricated Friction Experiments With Coarse Surface Texture

February 19, 2017

Author(s)

Jorn Larsen-Basse, L K. Ives, Stephen M. Hsu

Low-speed friction experiments were conducted under boundary lubrication in a pin-on-disk tester. The 304 stainless steel disk had smooth areas alternating with...

Role of Melting Equilbria in the Processing of High T-c Superconductors in the BSCCO System

February 19, 2017

Author(s)

Winnie Wong-Ng, Lawrence P. Cook, Anthony J. Kearsley, A R. Roosen

Three types of liquids were found in the BSCCO system: transient, metastable, and stable liquids. The roles of these liquids are discussed with examples...

Imaging Optics and CCD Camera Characterization for Metrology

February 19, 2017

Author(s)

S Fox, Edward A. Kornegay, Richard M. Silver

Optical semiconductor characterization and metrology rely heavily on digital camera imaging and its associated optical imaging systems. This work characterizes...

Effect of Colloidal Probe Random Surface Features on Adhesion

February 19, 2017

Author(s)

Seung H. Yang, Stephen M. Hsu

We have uncovered the fact that colloidal probes often have random surface features which when not properly accounted for, can significantly affect the...

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...

Elastic Anomaly in SrTiO3 Thin Films Grown on Si(001)

February 19, 2017

Author(s)

Joseph Woicik, F S. Aguirre-Tostado, A Herrera-Gomez, R Droopad, D G. Schlom, P Zschack, E Karapetrova, P Pianetta

Nanofriction: The Observation of Elastic Plowing

February 19, 2017

Author(s)

Z C. Ying, Stephen M. Hsu

Accurate friction measurement at nanoscale is critical in reliable device design. Literature papers have reported different friction values for the same...

Effects of Large Grains on Transgranular Fracture Toughness

February 19, 2017

Author(s)

Stephen W. Freiman

This paper addresses issues of fracture for materials in which large grains, exist in a matrix of much smaller grains. Materials used for optical components...

Assessment of a 3D-Printed Aluminum Corrugated Feed Horn at 118.7503 GHz

February 19, 2017

Author(s)

Josh Gordon, David R. Novotny, Ronald C. Wittmann, Michael H. Francis, Jeffrey R. Guerrieri, Periasamy Lavanya, Albin Gasiewski

All-metal 3D printing is investigated as a viable option for millimeter wave applications. 3D printing is finding applications across many areas and may be a...

Spin Coherence, Condensation, and Superfluidity

February 17, 2017

Author(s)

Ezio E. Iacocca, Thomas J. Silva, Mark Hoefer

Wind Effects on Flame Spread and Ember Spotting Near a Structure

February 6, 2017

Author(s)

Kathryn M. Butler, Erik L. Johnsson, Marco G. Fernandez, Mariusz Zarzecki, Glenn P. Forney, Eric Auth

In wildland-urban interface (WUI) fires, combustible materials pose a potential threat to contiguous or nearby structures. Flame spread and firebrand spotting...

Exposing Fencing Assemblies to Firebrand Showers Characteristic of Burning Structures

February 5, 2017

Author(s)

Samuel Manzello, Sayaka Suzuki, Ichiro Hagiwara

Wildland-Urban Interface (WUI) fires have devastated communities on multiple continents. Large outdoor fires in Japan mainly occur due to post-earthquake fires...

Micro-Signatures: The Effectiveness of Known Bad N-Grams for Network Anomaly Detection

February 5, 2017

Author(s)

Richard Harang, Peter Mell

The field of intrusion detection is divided into signature detection and anomaly detection. The former involves identifying patterns associated with known...

Was this page helpful?