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Journals

Fluorescence in Situ Hybridization (FISH) Methods for Medical Genetics; Proposed Guideline

May 1, 2002

Author(s)

Peter E. Barker, R K. Enns, G Dewalk, D J. Rasmussen, E Shulse, M S. Watson, P R. Wyatt

FISH technology can be used to detect microdeletions that are not visible by standard cytogenetic banding patterns. FISH technology allows for the rapid...

Measurements and Modeling of Ion Energy Distributions in High-Density, Radio-Frequency Biased CF₄ Discharges

May 1, 2002

Author(s)

Mark A. Sobolewski, Yicheng Wang, A N. Goyette

Models of ion dynamics in radio-frequency (rf) biased, high-density plasma sheaths are needed to predict ion bombardment energies in plasma simulations. To test...

Progress Towards an International Standard for Data Transfer in Rapid Prototyping and Layered Manufacturing

May 1, 2002

Author(s)

Mike Pratt, Amba D. Bhatt, D Dutta, Kevin W. Lyons, Lalit Patil, Ram D. Sriram

This paper discusses the informational requirements of rapid prototyping and layered manufacturing (RPLM). The study is motivated by the recent decision to...

The STEP Modular Architecture

May 1, 2002

Author(s)

Allison Barnard Feeney

The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP (STandard for the Exchange of Product...

Wavelength references for 1300-nm wavelength division multiplexing

May 1, 2002

Author(s)

Tasshi Dennis, E. A. Curtis, C. W. Oates, Leo W. Hollberg, Sarah L. Gilbert

We have conducted a study of potential wavelength calibration references for use as both moderate-accuracy transfer standards and high-accuracy National...

The History and Importance of Impact Testing

May 1, 2002

Author(s)

Thomas A. Siewert, M P. Manahan, Christopher N. McCowan, J M. Holt, F J. Marsh

Charpy impact testing is a low-cost and reliable test method which is commonly required by the construction codes for fracture-critical structures such as...

Intercomparison of a Correlated-Photon-Based Method to Measure Detector Quantum Efficiency

May 1, 2002

Author(s)

Alan L. Migdall, Stefania Castelletto, Ivo P. Degiovanni, M L. Rastello

We report on the absolute calibration of photodetector quantum efficiency using correlated photon sources, performed independently at two laboratories, the...

Computation of the Linear Elastic Properties of Random Porous Materials With a Wide Variety of Microstructure

May 1, 2002

Author(s)

A P. Roberts, Edward Garboczi

A finite-element method is used to study the elastic properties of random three-dimensional porous materials with highly interconnected pores. We show that the...

Multifilmamentary Nb₃Sn wires reacted in hydrogen gas

May 1, 2002

Author(s)

M Takayasu, R G. Ballinger, Ronald B. Goldfarb, A. A. Squitieri, P. J. Lee, David C. Larbalestier

Reaction of Nb 3Sn wires in an Icology 908 conduit in the presence of oxygen can decrease the conduit's fracture toughness. This may be avoided by reacting in a...

Experimental Study of Magnetic Interactions Between Colloidal Particles in Magnetic Fluids

May 1, 2002

Author(s)

S Taketomi, Robert D. Shull

In order to clarify whether or not there is any magnetic interaction between the magnetic colloidal particles in magnetic fluids (MF's), we compare the...

Effect of Counterface Roughness on Abrasive Wear of Hydroxyapatite

May 1, 2002

Author(s)

Sergei Kalinin, S Jahanmir, L K. Ives

The present study was undertaken to evaluate the effect of surface roughness of glass-infiltrated alumina on the abrasive wear of hydroxyapatite using a pin-on...

Material Model for Strain-Induced Surface Roughening of Sheet Metal

May 1, 2002

Author(s)

Y Shim, Mark R. Stoudt, Lyle E. Levine, Stephen W. Banovic, Richard J. Fields

A generic model for strain-induced surface roughening has been derived from a statistical analysis of experimental data from aluminum alloys. The model predicts...

Calculation of Damping Rates in Thin Inhomogeneous Ferromagnetic Films Due to Coupling to Lattice Vibrations

May 1, 2002

Author(s)

Robert McMichael, A B. Kunz

This paper describes calculations of ferromagnetic resonance damping rates due to coupling between the magnetization and lattice vibrations through...

The Effect of Irradiation Wavelength Bandwidth and Spot Size on the Scraping Depth and Temperature Rise in Composite Exposed to an Argon Laser or a Conventional Quartz-Tungsten-Halogen Source

May 1, 2002

Author(s)

R D. Pradhan, N Melikechi, F Eichmiller

Objectives: The purpose of this study was to investigate that effect of the effect of the spectral distribution of the curing irradiation near the maximum...

Cracking in Ceramic/Metal/Polymer Trilayer Systems

May 1, 2002

Author(s)

H Zhao, P Miranda, Brian R. Lawn, X Z. Hu

Fracture and deformation in model brittle-outerlayer/metal-core/polymer substrate trilayer systems in concentrated loading are studied. Model systems for...

Spin-Glass and Random-Field Effects in Exchanged-Biased NiFe Film on a NiO Single-Crystal Substrate

May 1, 2002

Author(s)

A E P de Araujo, F L. Machado, A R. Rodrigues, A Azevedo, F M. de Aguiar, J R. de Almeida, S M. Rezende, William F. Egelhoff Jr.

SQUID magnetometry measurements on a ferromagnetic/antiferromagnetic sample made of a permalloy thin film sputtered on a thick NiO single-crystal substratre...

Ferromagnetic Resonance Mode Interactions in Periodically Perturbed Films

May 1, 2002

Author(s)

Robert McMichael, D J. Twisselmann, John E. Bonevich, P J. Chen, William F. Egelhoff Jr., Stephen E. Russek

rromagnetic resonance linewidth measurements are reported for thin films of Ni 80Fe 20 deposited on substrates with 320 nm period grooves or parallel aperiodic...

Interfacial Tension Measurement Between Immiscible Polymers; Improved Deformed Drop Retraction Method

May 1, 2002

Author(s)

Y Son, Kalman D. Migler

This paper describes an improvement of the technique to measure interfacial tension in immiscible polymer blends. Our method is based on the droplet retraction...

Observation of the Cavitation Phenomena Upon the Gross Melt Fracture Regime in LLDPE Extrusion

May 1, 2002

Author(s)

Y Son, Kalman D. Migler

We present observation of a cavitation phenomenon inLLDPE eaxtrusion. In the gross melt fracture regime, cavitation was always observed in the first 0.5 mm to 1...

Preliminary Report on the Biocompatibility of a Moldable, Resorbable, Composite Bone Graft Consisting of Calcium Phosphate Cement and Poly (Lactide-Co-Glycolide) Microspheres

May 1, 2002

Author(s)

Carl Simon Jr., C A. Khatri, Scott Wight, Francis W. Wang

We have assessed the biocompatibility of a new composite bone graft consisting of calcium phosphate cement (CPC) and poly(lactide-co-glycolide) (PLGA)...

Radiometric Measurement Comparisons at NASA's Goddard Space Flight Center: Part I. The GSFC Sphere Sources

May 1, 2002

Author(s)

James J. Butler, B. Carol Johnson, R Barnes

From March 30 through April 9, 2001, thirteen radiometers participated in a radiometric measurement comparison at the National Aeronautics and Space...

Applications of Ultrafast Transient Infrared Spectroscopies

May 1, 2002

Author(s)

T Heimer, Edwin J. Heilweil

Modern techniques for performing ultrafast transient mid-infrared spectroscopy using turnable, broadband infrared probe pulses with multi-channel CCD and...

Nanotechnology in Early Detection of Cancer

May 1, 2002

Author(s)

P R. Srinivas, Peter E. Barker, S Srivastava

Nanotechnology is defined as the creation of functional materials, devices and systems through control of matter at the scale of 1 to 100 nanometers, and...

RNA and RNA-Protein Complexes as Targets for Therapeutic Intervention

May 1, 2002

Author(s)

E S. DeJong, B. Luy, John Marino

Today, the majority of pharmaceuticals developed to treat cancers and viral/bacterial infections target cellular, bacterial or viral proteins known to be...

Reduction of Cobalt and Iron Corroles and Catalyzed Reduction of CO₂

May 1, 2002

Author(s)

J Grodkowski, Pedatsur Neta, E Fujita, A Mahammed, L Simkhovich, Z Gross

The role of cobalt and iron corroles in catalytic CO 2 reduction has been studied. Chemical, electrochemical, and photochemical reductions of the stable metal...

Isochoric Heat Capacity Measurements for Heavy Water Near the Critical Point

May 1, 2002

Author(s)

N. G. Polikhronidi, I M. Abdulagatov, Joe W. Magee, G. V. Stepanov

Isochoric heat capacity measurements of D 20 are presented as a function of temperature at fixed densities of 319.60, 398.90, 431.09 and 506.95 kg m -3. The...

Measurements and modeling of ion energy distribution in high-density, radio-frequency biased CF4 discharges

May 1, 2002

Author(s)

Mark A. Sobolewski, Yicheng Wang, Amanda N. Goyettes

A Low Noise Latching Comparator Probe for Waverform Sampling Applications

May 1, 2002

Author(s)

David I. Bergman, Bryan C. Waltrip

A new latching comparator probe is described. The probe is being developed as part of an effort to extend voltage measurement capability in the 10 Hz to 1 MHz...

Multi-Step Magnetic Switching in Single-Crystal (001) Co₂MnGe Films

April 23, 2002

Author(s)

F Y. Yang, C H. Shang, T Ambrose, J J. Krebs, G A. Prinz, Valerian I. Nikitenko, V S. Gornakov, Alexander J. Shapiro, Robert D. Shull, C L. Chien

Multi-step magnetic switching with single, double, and triple loops has been observed in single-crystal (001) Co2MnGe Heusler alloy films epitaxially grown on...

Precessional switching in submicrometer spin valves

April 22, 2002

Author(s)

Shehzaad F. Kaka, Stephen E. Russek

Small spin valves are switched using a subnanosecond field pulse applied alongdg the magnetization hard-axis fields increases as the duration is decreased from...

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