NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

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.

Bioscience

Biomaterials

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author
  • Published Date
Displaying 1526 - 1550 of 1729

A Nanocomposite Poly(Methyl-Methacrylate) Bone Cement

July 1, 2000
Author(s)
A H. Gomoll, A Bellare, W Fitz, T S. Thornhill, R D. Scott, P R. Jemian, Gabrielle G. Long
Poly(methyl methacrylate) (PMMA) based orthopaedic bone cements contain 1-3 micro υ size radiopacifier particles. Incomplete dispersion of these particles leads to the presence of 50-200 micro υ size agglomerates. These large defects are sites of high

Abrasive Machining of Glass-Ceramics With a Dental Handpiece

July 1, 2000
Author(s)
X Dong, L Yin, S Jahanmir, L K. Ives, E D. Rekow
Machinable glass ceramics are used to prepare dental restorations with modern dental CAD/CAM systems. Unfortunately, little is understood about the influence of mahining parameters on material removal rates and any damage which could be introduced into the

Effect of Interfacial Layers on Wear Behavior of a Dental Glass-Ceramic

July 1, 2000
Author(s)
A Ravikiran, S Jahanmir
Wear studies on a glass-ceramic dental restorative material were performed under two types of lubrication conditions with distilled water. In one set of experiments, the contact interface was continuously flushed with fresh water to remove the wear debris

Fracture and the Structure of Silica

July 1, 2000
Author(s)
Stephen W. Freiman
Not only because of its historic and widespread use in applications where its strength and brittle nature are significant factors, but also because it is homogeneous in composition and structure, and isotropic in its properties, glass is an ideal medium in

Critical Issues in the Characterization of Polymers for Medical Applications

June 1, 2000
Author(s)
Walter G. McDonough, Eric J. Amis, J Kohn
On June 14, 2000, the New Jersey Center for Biomaterials and the Polymers Division of the National Institute of Standards and Technology (NIST) co-sponsored a one-day workshop on Critical Issues in the Characterization of Polymers for Medical Applications

Flux Pinning of Bi 2 Sr 2 CaCu 2 O 8+g /Ag Superconductors Utilizing (Sr,Ca) 14 Cu 24 O 41 Defects and Nanophase Al 2 O 3 and Au Particles

June 1, 2000
Author(s)
T J. Haugan, Winnie K. Wong-Ng, Lawrence P. Cook, H J. Brown, L Swartzendruber, D T. Shaw
Investigations into flux pinning of Bi 2Sr 2 CaCu 2O 8+γ /Ag (Bi-2212/Ag) thick film conductors utilizing micron-sized (Sr,Ca) 14Cu 24O 41 and nanophase Al 2O 3 and Au particles are described. Addition of defect particles delayed and reduced formation of

In-Situ Observation of Small-Angle X-Ray Scattering by Dislocations

June 1, 2000
Author(s)
Lyle E. Levine, Gabrielle G. Long, R Thomson
Ultra-small-angle X-ray scattering by dislocations in single-crystal aluminum has been observed in situ as a function of plastic deformation. The scattering is observed to be strongly dependent upon sample orientation, with single dislocations, dislocation

Modeling of Stable and Unstable Polarization Switching

June 1, 2000
Author(s)
H Kessler, Lin-Sien H. Lum, H Balke
We examine the stability of polarization switching in polyscrystalline ferroelectric/ferroelastic materials subject to continuous electromechanical loading. In case of unstable switching, a finite change of remanent polarization or strain results from an

Multilevel Structure of Reinforcing Silica and Carbon

June 1, 2000
Author(s)
D W. Schaefer, T Rieker, M M. Agamalian, J S. Lin, Daniel A. Fischer, S Sukumaran, C I. Chen, G Beaucage, C Herd, J Ivie
We study the structure of colloidal silica and carbon on length scales from 0.25 -1 7 using x-ray, neutron and light scattering. These materials consist of primary particles of the order of 100 , aggregated into micrometer-sized aggregates that in turn are

A Test Method for Assessing Interfacial Shear Strength in Composites

May 1, 2000
Author(s)
Gale A. Holmes, Donald L. Hunston, Walter G. McDonough, R C. Peterson
Two of the critical factors controlling the long-term performance and durability of composites in structural applications is the fiber-matrix interfacial shear strength (IFSS) and the durability of the fiber-matrix interface. The single fiber fragmentation
Was this page helpful?