Results 101 to 110 of about 165,674 (237)

Absolute spectrophotometry in M31 and M32 [PDF]

open access: yes
For a number of places in the bulge of M31 and for two places in M32 photometric scans from 3300 A to 10,600 A have been obtained with the multichannel spectrometer on the 5-meter Hale telescope. The scans show that in both objects the color temperature (
Oke, J. B., Schwarzschild, M.
core   +1 more source

The expected performance of stellar parametrization with Gaia spectrophotometry

open access: yes, 2012
Gaia will obtain astrometry and spectrophotometry for essentially all sources in the sky down to a broad band magnitude limit of G=20, an expected yield of 10^9 stars.
A. Vallenari   +40 more
core   +3 more sources

A Study on the Cell Layer Patterns of a Citrus Periclinal Chimera Reveals β‐Cryptoxanthin Regulation in Citrus Fruits

open access: yesAdvanced Science, EarlyView.
Researchers have identified a citrus chimera with distinctive tissue origins and carotenoid profiles. It is discovered that fruit tissues develop from all three cell layers but in different proportions. A key transcription factor, MYB107, regulates β‐cryptoxanthin production by directly activating carotenoid biosynthesis genes, explaining why some ...
Chi Zhang   +8 more
wiley   +1 more source

Rapid estimation of gamma number of viscose by UV Spectrophotometry [PDF]

open access: yes, 2014
Viscose process is the most important method for industrial cellulose dissolution. The degree of substitution (DS) is an important parameter in cellulose derivatives, and it is usually expressed as a gamma number (γ No.).
Alberini, Ivana Cecilia   +3 more
core  

An Atlas of Spectrophotometric Landolt Standard Stars

open access: yes, 2005
We present CCD observations of 102 Landolt standard stars obtained with the R-C spectrograph on the CTIO 1.5 m telescope. Using stellar atmosphere models we have extended the flux points to our six spectrophotometric secondary standards, in both the blue
A. M. Soderberg   +8 more
core   +3 more sources

Pure All-trans Vitamin A Acetate and the Assessment of Vitamin A Potency by Spectrophotometry [PDF]

open access: bronze, 1951
J. Boldingh   +9 more
openalex   +1 more source

Microwave‐Activated Bacterial Biorobot for Multimodal Cancer Therapy

open access: yesAdvanced Science, EarlyView.
An Escherichia coli bacterial biorobot is engineered for localized microwave activation in cancer therapy. Upon activation at tumor sites, the biorobot releases glucose oxidase, inducing tumor cell death via glucose depletion and H2O2 generation catalyzed by Cu2O.
Huilan Zhuang   +9 more
wiley   +1 more source

Spectrophotometric determination of the acidity constants of calcon in water and mixed water–organic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
The acid–base properties of calcon (1-(2-hydroxy-1-naphthylazo)-2-naphthol-4-sulfonic acid) in water and mixed water–organic solvents at 25 °C at an ionic strength of 0.10 M are studied by a multiwavelength spectrophotometric method. The organic solvents
MOHAMMAD MAZLOUM-ARDAKANI   +4 more
doaj  

Lipid Peroxidation Process in Meat and Meat Products: A Comparison Study of Malondialdehyde Determination between Modified 2-Thiobarbituric Acid Spectrophotometric Method and Reverse-Phase High-Performance Liquid Chromatography

open access: yesMolecules, 2017
The aim of this work was to compare the methods of malondialdehyde detection, as the main secondary product of the lipid peroxidation process, in meat and meat products.
Anna Reitznerová   +6 more
doaj   +1 more source

Glabridin‐Gold(I) Complex as a Novel Immunomodulatory Agent Targeting TrxR and MAPK Pathways for Synergistic Enhancement of Antitumor Immunity

open access: yesAdvanced Science, EarlyView.
Complex 6d could promote tumor immunogenicity by targeting thioredoxin reductase (TrxR) and remodel immunosuppressive microenvironment by the mitogen‐activated protein kinase (MAPK) pathway inhibition simultaneously. This study provides a novel approach to develop metal immunomodulatory agents by designing gold complexes incorporating natural products,
Zhaoran Wang   +10 more
wiley   +1 more source

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