Results 51 to 60 of about 1,113,255 (292)

Dust in the Photospheric Environment: Unified Cloudy Models of M, L, and T Dwarfs [PDF]

open access: yes, 2002
We address the problem of how dust forms and how it could be sustained in the static photospheres of cool dwarfs for a long time. In the cool and dense gas, dust forms easily at the condensation temperature, T_cond, and the dust can be in detailed ...
Biemont E.   +24 more
core   +4 more sources

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Behavior and hippocampal Epac signaling to nicotine CPP in mice

open access: yesTranslational Neuroscience, 2019
Tobacco use is a major challenge to public health in the United States and across the world. Many studies have demonstrated that adult men and women differ in their responses to tobacco smoking, however neurobiological studies about the effect of smoking
Liu Jing   +7 more
doaj   +1 more source

A Study on Dust-Control Technology Used for Large Mining Heights Based on the Optimization Design of a Tracking Spray Nozzle

open access: yesAtmosphere, 2023
Intense cutting-induced dust production in fully mechanized mining faces (FMMFs) with large mining heights produces a high amount of dust that is difficult to capture and severely affects the working environment, threatening the health of occupational ...
Zuxiang Hu, Benyi Zhang, Haoqian Chang
doaj   +1 more source

Dust production 680-850 million years after the Big Bang

open access: yes, 2015
Dust plays an important role in our understanding of the Universe, but it is not obvious yet how the dust in the distant universe was formed. I derived the dust yields per asymptotic giant branch (AGB) star and per supernova (SN) required to explain dust
Michałowski, Michał J.
core   +1 more source

High throughput genomic sequencing of bioaerosols in broiler chicken production facilities [PDF]

open access: yes, 2016
Chronic inhalation exposure to agricultural dust promotes the development of chronic respiratory diseases among poultry workers. Poultry dust is composed of dander, chicken feed, litter bedding and microbes.
Bair, Thomas   +6 more
core   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Analysis of gamma-emitting radionuclides in soils around high energy accelerators

open access: yesRadiation Medicine and Protection, 2022
Objective: To investigate the specific activities of gamma radionuclides in the soils around high energy accelerators, and to analyze the influence of rays emitted by nuclides with characteristic peaks at similar energy points on nuclide measurement ...
Jiaying Wang   +4 more
doaj   +1 more source

Wind-Stress Dust Lifting in a Mars Global Circulation Model: Representation across Resolutions [PDF]

open access: yes, 2017
The formation of Martian dust storms is believed to be driven by dust lifting by near-surface wind stress (NSWS). Accurately representing this dust lifting within Mars Global Circulation Models (MGCMs) is important in order to gain a full understanding ...
Balme, Matthew   +3 more
core  

The selective effect of environment on the atomic and molecular gas-to-dust ratio of nearby galaxies in the Herschel Reference Survey [PDF]

open access: yes, 2016
We combine dust, atomic (HI) and molecular (H$_{2}$) hydrogen mass measurements for 176 galaxies in the Herschel Reference Survey to investigate the effect of environment on the gas-to-dust mass ($M_{\rm gas}/M_{\rm dust}$) ratio of nearby galaxies.
Baes, M.   +12 more
core   +8 more sources

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