Results 111 to 120 of about 266,575 (326)

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

Spectrophotometry of shell galaxies [PDF]

open access: yesThe Astrophysical Journal, 1986
Low dispersion spectra of two shell galaxies, NGC 3923 and NGC 3051, have been obtained covering the 5300Å to 10000Å spectral range. These long-slit spectra go through the nucleus of each galaxy and also through 12 shells in NGC 3923 and through 3 shells in NGC 3051.
openaire   +1 more source

Electro‐Conductive Silver‐Coated Polyamide‐Imide Membranes for Sustainable Water Treatment

open access: yesAdvanced Sustainable Systems, EarlyView.
This study reports the development of a silver‐coated, electro‐conductive ultrafiltration membrane supported on polyamide‐imide. Using a simple and scalable spray‐coating method, the membrane achieved a high electrical conductivity of 2.215 × 10−5 S cm−1.
Zahra Zandi   +11 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  

Biochar‐Iron Oxide Composites for Adsorption of Chlorophenoxy Herbicides: Impact of Chlorine Substituents on Bath and Continuous Adsorption Performance

open access: yesAdvanced Sustainable Systems, EarlyView.
Iron oxide‐impregnated biochar from sugarcane bagasse exhibits remarkable efficiency in removing 2,4‐dichlorophenoxyacetic acid and chlorophenoxyacetic acid, offering a sustainable option for water purification. The material retains high performance under real conditions while meeting safety criteria for irrigation use. Distinct structural features and
Thamiris Ferreira Souza   +9 more
wiley   +1 more source

Red Supergiants in the Andromeda Galaxy (M31)

open access: yes, 2009
Red supergiants are a short-lived stage in the evolution of moderately massive stars (10-25Mo), and as such their location in the H-R diagram provides an exacting test of stellar evolutionary models.
Andre Maeder   +51 more
core   +1 more source

Simple, rapid spectrophotometry of urinary N-acetyl-beta-D-glucosaminidase, with use of a new chromogenic substrate. [PDF]

open access: bronze, 1983
Akira Noto   +7 more
openalex   +1 more source

Structural Characterization and AI‐Enhanced Modeling of a Broadly Neutralizing Camelid Antibody Against SARS‐CoV‐2 Variants

open access: yesAdvanced Therapeutics, EarlyView.
This study characterizes a camelid antibody (B10) with potent neutralizing activity against SARS‐CoV‐2 Wildtype and Omicron variants. Through binding assays, epitope mapping, pseudovirus neutralization, and AI‐driven modeling, the antibody is shown to target conserved RBD regions in a closed Spike conformation.
Katja Hanack   +13 more
wiley   +1 more source

Targeted Expansion of Treg Cells to Induce Immune Tolerance after Kidney Transplantation

open access: yesAdvanced Science, EarlyView.
A dual‐targeting nanoparticle platform that selectively engages graft stromal cells via CD248 receptors while employing kidney‐ specific promoters (NPHS2) to drive localized IL‐ 2/TGF‐βexpression is developed. This approach achieves three therapeutic objectives:1) intragraft Treg polarization without systemic cytokine exposure;2) reduced dependence on ...
Tong Lu   +18 more
wiley   +1 more source

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