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1
Simultaneous Offset Instrument Approaches at Newark ...
2001-10-01

... Personal Author(s) : Magyarits, Sherri ; Kopardekar, Parimal ; Sacco, Nicole ; Carmen, Kevin. Handle / proxy Url : Report Date : OCT 2001. ...

DTIC Science & Technology

2
6 - NASA Technical Reports Server

Author: Kopardekar, Parimal; Smith, Nancy; Lee, Katharine K.; Aweiss, Arwa Salem ; Lee, Paul U.; Prevot, .... LUNAR AND PLANETARY EXPLORATION (1240) [x] ...

NASA Website

3
High-Capacity Tube Network Design using the Hough Transform

High-Capacity Tube Network Design using the Hough. Transform. Min Xue. University of California at Santa Cruz, Moffett Field, CA 94035. Parimal Kopardekar ...

NASA Website

4
Multiple Source Exposure Technique: A New Method in Industrial Radiography.
1985-01-01

Radiographic examination of objects having large subject contrast is conventionally carried out by adopting either a multiple exposure technique or a multifilm technique. This report presents an original concept and detailed modalities of a new latitude t...

National Technical Information Service (NTIS)

5
Longitudinal variation of the equatorial ionosphere: modeling and experimental results
2010-01-01

We describe a new version of the Parameterized Regional Ionospheric Model (PARIM) which has been modified to include the longitudinal dependences. This model has been reconstructed using multidimensional Fourier series. The equatorial electron densities/plasma frequencies calculated by PARIM for the E and F regions are compared with experimental data and ...

NASA Astrophysics Data System (ADS)

6
Ultrafast insulator-to-metal phase transition as a switch to measure the spectrogram of a supercontinuum light pulse
2010-01-01

In this letter we demonstrate the possibility to determine the temporal and spectral structure (spectrogram) of a complex light pulse exploiting the ultrafast switching character of a nonthermal photoinduced phase transition. As a proof, we use a VO2 multifilm, undergoing an ultrafast insulator-to-metal phase transition when excited by femtosecond near-infrared laser pulses. ...

NASA Astrophysics Data System (ADS)

7
Parameterized Regional Ionospheric Model and a comparison of its results with experimental data and IRI representations
2010-10-01

We describe a Parameterized Regional Ionospheric Model (PARIM) to calculate the spatial and temporal variations of the ionospheric electron density/plasma frequency over the Brazilian sector. The ionospheric plasma frequency values as calculated from an enhanced Sheffield University Plasmasphere-Ionosphere Model (SUPIM) were used to construct the model. ...

NASA Astrophysics Data System (ADS)

8
Detection of Avian Polyomavirus Infection by Polymerase Chain Reaction Using Formalin-Fixed, Paraffin-Embedded Tissues

... by Polymerase Chain Reaction Using Formalin-Fixed, Paraffin-Embedded TissuesParimal Roy, A. S. DhillonC, Lloyd Lauerman, and ... in the procedure were either formalin-fixed tissues embedded in paraffin bl...

NBII National Biological Information Infrastructure

9
In-bore radiography for large-caliber gun
1987-01-01

State-of-the-art techniques for dense object radiography, fast-transient digitization, modern computation, digital averaging and enhancement of multifilm radiographs, and microwave interferometry have been combined to provide modern propulsion and launch diagnostics for large-bore gun shots. An in-bore multifilm radiograph of a rod and sabot assembly was ...

DOE Information Bridge

10
Stress and texture evolution of Ni/Al multi-film by laser interference irradiation
2004-03-01

Ni/Al multi-layered thin film systems are important to protect the mechanical and chemical impact on the bulk component. The mechanical properties of these compounds can be further improved by combining different stress and texture situations. Such optimized surface composites have been achieved by laser interference irradiation. In this study, the thin film system Ni/Al was produced by physical ...

Energy Citations Database

11
Sleep Deprivation and Interference by Emotional Distracters
2010-10-01

Study Objectives:We determined if sleep deprivation would amplify the effect of negative emotional distracters on working memory.Design:A crossover design involving 2 functional neuroimaging scans conducted at least one week apart. One scan followed a normal night of sleep and the other followed 24 h of sleep deprivation. Scanning order was counterbalanced across subjects.Setting:The study took ...

PubMed Central

12
Parimal Chowdhury�s work on smoking related pancreatic disorders
2011-06-15

Cigarette smoking is a known risk factor for the development of numerous diseases. The role of nicotine in the induction of pancreatic inflammation and pancreatic cancer as a result of cigarette smoking has been recognized and reported in the literature. The mechanism by which nicotine induces such pathologies is as yet unknown. An understanding of the proliferative potential of nicotine in ...

PubMed Central

13
Parimal Chowdhury's work on smoking related pancreatic disorders.
2011-06-15

Cigarette smoking is a known risk factor for the development of numerous diseases. The role of nicotine in the induction of pancreatic inflammation and pancreatic cancer as a result of cigarette smoking has been recognized and reported in the literature. The mechanism by which nicotine induces such pathologies is as yet unknown. An understanding of the proliferative potential of nicotine in ...

PubMed

14
Rapid radiographic film calibration for IMRT verification using automated MLC fields.
2002-10-01

A method for measuring a film sensitometric curve using a single sheet of film exposed with a two field step-and-shoot MLC treatment was developed and tested with Kodak XV2 and EDR2 films. With this technique a film sensitometric curve can be completed in only 10 minutes, making it practical to generate new film calibrations daily. This method is applicable to film calibrations for all purposes, ...

PubMed

15
Fast radiographic film calibration procedure for helical tomotherapy intensity modulated radiation therapy dose verification
2005-06-15

Film dosimetry offers an advantageous in-phantom planar dose verification tool in terms of spatial resolution and ease of handling for quality assurance (QA) of intensity modulated radiation therapy (IMRT) plans. A critical step in the success of such a technique is that the film calibration be appropriately conducted. This paper presents a fast and efficient film calibration method for a helical ...

Energy Citations Database

16
Fabrication of multispectral imaging technology driven MEMS-based micro-arrayed multichannel optical filter mosaic
2011-02-01

Multispectral imaging is becoming a new powerful tool in a wide range of biological studies by adding spectral, spatial and temporal dimensions to tissue abnormity and the underlying biological processes. A standard spectral imaging setup includes two major components, a band pass selection device (such as liquid crystal tunable filter and diffraction grating) and a scientific-grade monochrome ...

NASA Astrophysics Data System (ADS)

17
The sputtered gold/platinum/titanium thin film stack for gallium arsenide metallization: Microstructure, stress, and surface roughness
2004-01-01

Au/Pt/Ti multilevel film is the most widely used metallization scheme in GaAs ICs. The traditional way to deposit Au/Pt/Ti films is evaporation, which suffers from low throughput, low yield and high level of contamination. Recently, sputtering has been adopted as another choice of deposition method and has been demonstrated to be superior in yield and throughput compared to evaporation. This ...

NASA Astrophysics Data System (ADS)

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