Results 101 to 110 of about 1,105,025 (337)
Two Key Ferredoxins for Nitrogen Fixation Have Different Specificities and Biophysical Properties
Chemistry – A European Journal, EarlyView.Two ferredoxins, FdC and FdN, are collectively essential for the process of nitrogen fixation by the iron nitrogenase in R. capsulatus. We explore the biophysical factors, through spectroscopic and structural characterizations, which determine ferredoxin functionality and pathway specificity. The structure of FdC (PDB: 9I2A) and model of FdN (AF‐D5ARY6)
Holly Addison +5 more
wiley +1 more source
(21238) 1995 WV7: A New Basaltic Asteroid Outside the 3:1 Mean Motion Resonance [PDF]
arXiv, 2006 We report visible to near-infrared spectroscopy and spectrophotometry of asteroid (21238) 1995 WV7 that reveal the presence of deep absorption bands indicating a V taxonomic type with an apparently basaltic surface composition. Since this asteroid is on the other side of the 3:1 mean motion resonance from Vesta, and because the required ejection ...
arxiv
Mid-infrared imaging and spectroscopy of the enigmatic cocoon stars in the Quintuplet Cluster [PDF]
, 2000 In an attempt to determine the nature of the enigmatic cocoon stars in the Quintuplet Cluster, we have obtained mid-infrared imaging and spectrophotometry of the cluster, using the CAM and SWS instruments on ISO, using SpectroCam-10 on the Palomar 5m telescope, and NICMOS on HST.
arxiv +1 more source
Tests of the Accelerating Universe with Near-Infrared Observations of a High-Redshift Type Ia Supernova [PDF]
, 2000 We have measured the rest-frame B,V, and I-band light curves of a high-redshift type Ia supernova (SN Ia), SN 1999Q (z=0.46), using HST and ground-based near-infrared detectors.
Adam G. Riess +30 more
core +2 more sources
Dextran‐Assisted Biomimetic Fabrication of CdSe:Eu QDs With Enhanced Biocompatibility and Stability
Chemistry – A European Journal, EarlyView.Dextran‐templated CdSe:Eu quantum dots were synthesized and coated with citrate or APTES to enhance stability and reduce cytotoxicity. Structural, optical, and biological evaluations demonstrated their potential for cellular imaging and theragnostic applications. Abstract A dextran templated biomimetic synthetic approach was applied for the preparation
Myrto Margariti +6 more
wiley +1 more source
Journal of Lipid Research, 1964 With the use of a high-resolution grating infrared spectrophotometer, it is possible to analyze mixtures of cholesterol esters and triglycerides on the basis of the difference in their ester carbonyl absorption frequencies.
Norman K. Freeman
doaj
Green Chemistry Letters and Reviews, 2020 The biogenic synthesis of silver nanoparticles (AgNPs) using Aloe fleurentiniorum extract and antibacterial activity of the synthesized AgNPs were investigated.
Saleh H. Salmen, Sulaiman Ali Alharbi
doaj +1 more source
The H-band Emitting Region of the Luminous Blue Variable P Cygni: Spectrophotometry and Interferometry of the Wind [PDF]
, 2013 We present the first high angular resolution observations in the nearinfrared H-band (1.6 microns) of the Luminous Blue Variable star P Cygni. We obtained six-telescope interferometric observations with the CHARA Array and the MIRC beam combiner. These show that the spatial flux distribution is larger than expected for the stellar photosphere.
arxiv +1 more source
Journal of Vascular Surgery, 2003 PURPOSE Near-infrared spectrophotometry is used to measure flow, concentration, and oxygenation of hemoglobin in arterioles, capillaries, and venules several centimeters deep in tissue.
U. Wolf +11 more
semanticscholar +1 more source
Ultraviolet observations of Titan from OAO-2 [PDF]
High altitude deposition of energy in Titan's atmosphere can have a significant effect on the spectral distribution of emitted thermal radiation from the satellite.
Caldwell, J. J.
core +1 more source