Now showing items 6893-6912 of 10294

• #### Radioactivity in tektites ﻿

(1966)
Thorium, uranium, and potassium contents of 10 bediasites, 12 philippinites, 8 australltes, and 5 indochinttes were determined using a non-destructive gamma-spectrometric technique. The average thorium, uranium, and potassium ...
• #### Radiofrequency-induced Cellular Hyperthermia: Water-soluble Fullerene as a New Cancer Therapeutic Agent ﻿

(2014-09-08)
Due to the susceptibility of cancer to hyperthermia, abundant biomedical research is being conducted for the development of therapies using nanotechnology for noninvasive cancer hyperthermia. In this work, the water-soluble ...
• #### RADIOLARIAN BIOSTRATIGRAPHIC AND PALEOCEANOGRAPHIC STUDIES OF MONTEREY-LIKE ROCKS OF THE HUMBOLDT BASIN, NORTHERN CALIFORNIA ﻿

(1987)
The middle and upper Miocene sediments of the Humboldt Basin, northern California, have been investigated for the presence of radiolarian fauna. The vast majority of the radiolaria found are cold water indicators, however ...

(1974)
• #### Radon-222 emanation from rocks, soils, and lunar dust ﻿

(1971)
The investigation of the Radon-222 emanation rate and the escape-to-production rate ratio by means of alpha counting was undertaken for rocks, soils and a sample from lunar dust. The material was analysed for different ...
• #### Raman spectroscopy of photodissociating molecules ﻿

(1995)
Dissociative Resonance Raman Spectroscopy has been used to probe the dissociation dynamics of two different molecules, dimethyl zinc and methyl mercaptan. A method for analytically describing potential energy surfaces by ...

(1974)
• #### Random observations on random observations: Sparse signal acquisition and processing ﻿

(2010)
In recent years, signal processing has come under mounting pressure to accommodate the increasingly high-dimensional raw data generated by modern sensing systems. Despite extraordinary advances in computational power, ...
• #### Random process simulation for stochastic fatigue analysis ﻿

(1988)
A simulation technique is described which directly synthesizes the extrema of a random process and is more efficient than the Gaussian simulation method. Such a technique is particularly useful in stochastic fatigue analysis ...
• #### Random vibration of simple models for reinforced concrete structures ﻿

(1988)
The dynamic response of stiffness degrading models subjected to random excitations is investigated. Monte Carlo simulation is performed to determine the effect on the response of various system parameters and to provide ...
• #### Range-energy relations for protons in nickel ﻿

(1957)
The primary objective of this study was to determine by experimental methods a range-energy relation for protons in nickel, the energy range covered being between approximately 2 and 5 Mev. Nickel is often used for target ...
• #### Range-separated hybrids combining a range-separated Perdew-Burke-Ernzerhof functional with exact exchange and random phase approximation correlation ﻿

(2014-04-09)
Previous methods of combining a short-range density functional approximation with treatment of the long range using exact exchange and random phase approxi- mation correlation have been extended by replacing a range-separated ...
• #### Rapid prototyping of wireless communications systems ﻿

(2002)
This thesis introduces rapid prototyping methodology which overcomes important barriers in the design and implementation of digital signal processing (DSP) algorithms and systems on embedded hardware platforms, such as ...
• #### RAPID REORIENTATION OF ATTENTION IN CHILDREN WITH AND WITHOUT ATTENTION DEFICITS (COGNITIVE DEVELOPMENT, HYPERACTIVITY, DISORDER) ﻿

(1986)
The ability to reorient attention rapidly in both the auditory and visual modalities was first assessed developmentally and then assessed in children diagnosed as having Attention Deficit Disorder with Hyperactivity (314.01, ...
• #### Rare gas alkali ionic excimers ﻿

(1990)
The rare gas alkali ionic molecules are established as a new class of ionic excimers which emit in the vacuum ultraviolet (VUV) regime of the electromagnetic spectrum. Temporal and spectral characteristics of these species ...
• #### Rare gas alkali ionic excimers ﻿

(1989)
The rare gas alkali ionic excimers (RgA)$\sp+$& are investigated as possible VUV laser sources. The detection of emission from (XeRb)$\sp+$ at 165 nm using laser produced plasma soft x-ray excitation is reported. In addition ...
• #### Rare gas analysis of Apollo 11 glassy fragments ﻿

(1971)
The He, Ne, and. Ar contents of nineteen Apollo-11 glasses and four Apollo-12 glasses were measured massspectrometrically. The glasses were variously colored particles: amber, clear, green, and brown, and were approximately ...
• #### Ras signaling in either prothoracic gland cells or cholinergic neurons of Drosophila melanogaster regulates fly size ﻿

(2007)
Body size in multicellular organisms is determined by the integartion of two factors: the rate of growth and the duration of growth. In most animals, the rate of growth is controlled cell autonomously by the insulin-stimulated ...
• #### Ras-dependent and Ras-independent effects of PI3K in Drosophila motor neurons ﻿

(2012)
The lipid kinase PI3K plays key roles in cellular responses to activation of receptor tyrosine kinases or G protein coupled receptors such as the metabotropic glutamate receptor (mGluR). Activation of the PI3K catalytic ...
• #### Rashba Spin-Orbit Coupled Quantum Gases ﻿

(2014-04-04)
Spin-orbit (SO) coupling leads to many fundamental phenomena in a wide range of quantum systems from nuclear physics, condensed matter physics to atomic physics. For instance, in electronic condensed matter systems, SO ...