Results 51 to 60 of about 32,134 (136)

Investigation of in vivo measurement of cerebral cytochrome-c-oxidase redox changes using near-infrared spectroscopy in patients with orthostatic hypotension [PDF]

open access: yes, 2007
We have previously used a continuous four wavelength near infrared spectrometer to measure changes in the cerebral concentrations of oxy- (Δ[HbO2] and deoxy- haemoglobin (Δ[HHb]) during head-up tilt in patients with primary autonomic failure.
Cooper, C.E.   +6 more
core  

Two-micron spectrophotometry of the galaxy NGC 253 [PDF]

open access: yes, 1979
A very strong Brackett-gamma hydrogen emission line, and the 2.3 micron CO stellar absorption feature were measured in NGC 253. The presence and strength of the CO feature indicates that late type giant stars produce most of the 2.2 micron continuum ...
Becklin, E. E.   +3 more
core   +1 more source

Red supergiant star studies with CO5BOLD and Optim3D

open access: yes, 2012
We describe recent work focused towards a better understanding of red supergiant stars using 3D radiative-hydrodynamics (RHD) simulations with CO5BOLD.
Chiavassa, A., Plez, B.
core   +1 more source

Index to NASA Tech Briefs, 1975 [PDF]

open access: yes, 1976
This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...

core   +1 more source

Extrasolar Planets and Their Host Stars

open access: yes, 2017
In order to understand the exoplanet, you need to understand its parent star. Astrophysical parameters of extrasolar planets are directly and indirectly dependent on the properties of their respective host stars.
Boyajian, Tabetha, von Braun, Kaspar
core   +1 more source

Infrared observations of comets [PDF]

open access: yes
Selected comets are observed in the near infrared (1 to 2.2 micron) and thermal infrared (3.5 to 20 micron) with the NASA Infrared Telescope Facility (IRTF) and other telescopes as appropriate, in order to characterize the physical properties of the dust
Hanner, Martha S.
core   +1 more source

Validation of the Developed Zero-Order Infrared Spectrophotometry Method for Qualitative and Quantitative Analyses of Tranexamic Acid in Marketed Tablets [PDF]

open access: gold, 2021
Nerdy Nerdy   +5 more
openalex   +1 more source

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