Results 41 to 50 of about 7,925,437 (177)

Mount makes liquid nitrogen-cooled gamma ray detector portable [PDF]

open access: yes, 1966
Liquid nitrogen-cooled gamma ray detector system is made portable by attaching the detector to a fixture which provides a good thermal conductive path between the detector and the liquid nitrogen in a dewar flask and a low heat leak path between the ...
Fessler, T. E.
core   +1 more source

Electro-optic modulator for infrared laser using gallium arsenide crystal [PDF]

open access: yes, 1968
Gallium arsenide electro-optic modulator used for infrared lasers has a mica quarter-wave plate and two calcite polarizers to amplitude or phase modulate an infrared laser light source in the wavelength range from 1 to 3 microns. The large single crystal
Walsh, T. E.
core   +1 more source

A Multi-Agent Control Architecture for a Robotic Wheelchair

open access: yesApplied Bionics and Biomechanics, 2006
Assistant robots like robotic wheelchairs can perform an effective and valuable work in our daily lives. However, they eventually may need external help from humans in the robot environment (particularly, the driver in the case of a wheelchair) to ...
C. Galindo   +4 more
doaj   +1 more source

The Use of the Cognitive Behavioral Therapy for the Treatment of Migraine and Tension Type Headaches

open access: yesBilişsel Davranışçı Psikoterapi ve Araştırmalar Dergisi, 2015
Headache, which affects a large part of the community and causes loss of workforce, is gaining importance in terms of the burden which it brings on the society, by its function of restricting individuals social activities as well as increasing the health
Yasemin Akkoca   +2 more
doaj   +1 more source

Self-consistent solutions for low-frequency gravitational background radiation [PDF]

open access: yes, 1997
We study in a Brill-Hartle type of approximation the back-reaction of a superposition of linear gravitational waves in an Einstein-de Sitter background up to the second order in the small wave amplitudes $h_{ik}$.
Dautcourt, G.
core   +1 more source

Rheological Characterization and Performance Evaluation of Magnetorheological Finishing Fluid

open access: yesJournal of Applied Fluid Mechanics, 2020
The novel controllable behaviour of magnetorheological (MR) fluid is the backbone of magnetorheological fluid-based finishing processes. MR fluid-based finishing processes facilitate better control over finishing forces as the stiffness of MR finishing ...
V. Kumar, R. Kumar, H. Kumar
doaj  

The Akulov-Volkov Lagrangian, Symmetry Currents and Spontaneously Broken Extended Supersymmetry

open access: yes, 2001
A generalization of the Akulov-Volkov effective Lagrangian governing the self interactions of the Nambu-Goldstone fermions associated with spontaneously broken extended supersymmetry as well as their coupling to matter is presented and scrutinized.
A. W. Fisher   +27 more
core   +1 more source

Electronic Effects of the Substituents on Relaxometric and CEST Behaviour of Ln(III)-DOTA-Tetraanilides

open access: yesInorganics, 2019
Three different 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetamide (DOTAM) derivatives bearing as amide N-substituents phenyl, p-methoxyphenyl and p-ethylbenzoate groups were synthesized and the 1H and 17O NMR relaxometric behaviour of the Gd(III ...
Valeria Lagostina   +5 more
doaj   +1 more source

Foldable self-erecting joint [PDF]

open access: yes, 1986
The invention relates to a foldable self erecting joint which may be used to deploy the tetratruss frame of the proposed shuttle launched triangular space station. The frame must be folded into the payload bay of the space shuttle orbiter.
Pelischek, T. E.
core   +1 more source

Comments on the Deformed W_N Algebra

open access: yes, 2001
We obtain an explicit expression for the defining relation of the deformed W_N algebra, DWA(^sl_N)_{q,t}. Using this expression we can show that, in the q-->1 limit, DWA(^sl_N)_{q,t} with t=e^{-2\pi i/N}q^{(k+N)/N} reduces to the sl_N-version of the ...
Frenkel E., SATORU ODAKE
core   +1 more source

Home - About - Disclaimer - Privacy