Results 111 to 120 of about 101,023 (246)

Analysis of the atmospheric distribution, sources, and sinks of oxygenated volatile organic chemicals based on measurements over the Pacific during TRACE-P [PDF]

open access: yes, 2004
Airborne measurements of a large number of oxygenated volatile organic chemicals (OVOC) were carried out in the Pacific troposphere (0.1 - 12 km) in winter/spring of 2001 (24 February to 10 April).
Avery, MA   +16 more
core  

Recent advances of non‐invasive sensors for smart wearable respiratory monitoring

open access: yesVIEW, EarlyView.
Respiration contains rich physiological and pathological information, making it one of the most fundamental and continuous vital signs. Respiration monitoring is a non‐invasive and simple, but incredibly powerful, tool for assessing health, managing disease, and tracking fitness.
Jianhui Chen   +8 more
wiley   +1 more source

Nicotine pouches and clinical outcomes related to smoking cessation: A systematic review of randomized trials

open access: yesAddiction, EarlyView.
Abstract Background and aims Tobacco‐free nicotine pouches (NPs) are oral nicotine products promoted by manufacturers and some researchers as tools that may reduce nicotine cravings and support smoking reduction or cessation. However, evidence regarding their actual clinical impact remains limited.
Javad Heshmati   +6 more
wiley   +1 more source

Chemical complexity in the Horsehead photodissociation region

open access: yes, 2014
The interstellar medium is known to be chemically complex. Organic molecules with up to 11 atoms have been detected in the interstellar medium, and are believed to be formed on the ices around dust grains.
Bourlot, Jacques Le   +7 more
core   +2 more sources

Identification and Quantification of Volatile Organic Compounds and Bioaerosols in the Conservation Processes of Guanche Mummies

open access: yesArchaeometry, EarlyView.
ABSTRACT The Guanche mummies, ancient inhabitants of the Canary Islands, represent a significant part of the historical heritage preserved at the Museum of Nature and Archaeology (MUNA) in Tenerife, Spain. These mummies, subjected to artificial conservation practices, are of great interest to conservators seeking to understand their mummification ...
Benigno Sánchez   +5 more
wiley   +1 more source

The Impact of Roaming Radicals on the Combustion Properties of Transportation Fuels

open access: yes, 2017
A systematic investigation on the effects of roaming radical reactions on global combustion properties for transportation fuels is presented. New software was developed that can automatically discover all the possible roaming pathways within a given ...
Goldsmith, C. Franklin, West, Richard H.
core   +1 more source

Oxygen‐independent expression of HIF‐1α during the cell cycle in hepatocellular carcinoma cells controls essential metabolic pathways under normoxia

open access: yesThe FEBS Journal, EarlyView.
In Huh7 cells, HIF‐1α is essential as it maintains the expression of proteins involved in glycolysis and steroid/cholesterol biosynthesis both under normoxia and hypoxia. On the other hand, in HeLa cells, these pathways are induced by HIF‐1α only under hypoxia.
Ioanna‐Maria Gkotinakou   +6 more
wiley   +1 more source

Roaming in acetaldehyde

open access: yesThe Journal of Chemical Physics
We investigate roaming in the photodissociation of acetaldehyde (CH3CHO), providing insights into the contrasting roaming dynamics observed for this molecule compared to formaldehyde. We carry out trajectory studies for full-dimensional acetaldehyde, supplemented with an analysis of a two-degree-of-freedom restricted model and obtain evidence for two ...
Vladimír Krajňák, Stephen Wiggins
openaire   +3 more sources

Metabolic thermodynamics: pertinent reference state and energy potentials

open access: yesThe FEBS Journal, EarlyView.
A recommendation and method to view the energy potentials of metabolites with reference to (green arrow) a biochemical precursor state (in green: water, Mg2+, phosphate, bicarbonate, ammonium, and sulfate, at pH = 7) rather than (the red arrow) the physical–chemical reference state (in grayish red) that is alien to biology, that is, O2, H2, N2 at 1 ...
Hans V. Westerhoff   +21 more
wiley   +1 more source

Evaluation of Acetaldehyde in Water Stored in Polyethylene Terephthalate (PET) Bottles Distributed in Retail Stage in Isfahan, Iran

open access: yesتحقیقات نظام سلامت, 2020
Background: Polyethylene Terephthalate (PET) is a polymeric resin of polyester group used in the manufacture of beverage bottles. Migration of PET ingredients such as acetaldehyde to the content of bottles has adverse effects on consumers’ health.
Neda Ghassami   +7 more
doaj  

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