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acrolein/càries dental
L'enllaç es desa al porta-retalls
Pàgina 1 des de 21 resultats
Lowest triplet (n, π*) electronic state of acrolein: determination of structural parameters by cavity ringdown spectroscopy and quantum-chemical methods.
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The cavity ringdown absorption spectrum of acrolein (propenal, CH(2)=CH-CH=O) was recorded near 412 nm, under bulk-gas conditions at room temperature and in a free-jet expansion. The measured spectral region includes the 0(0)(0) band of the T(1)(n, π*) ← S(0) system. We analyzed the 0(0)(0)
Acrolein-an α,β-Unsaturated Aldehyde: A Review of Oral Cavity Exposure and Oral Pathology Effects.
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Acrolein is a highly reactive unsaturated aldehyde widely present in the environment, particularly as a product of tobacco smoke. Our previous studies indicated the adverse consequences of even short-term acrolein exposure and proposed a molecular mechanism of its potential harmful effect on oral
Subchronic inhalation of mixtures of cigarette smoke constituents in Xpa-/-p53+/- knock-out mice: a comparison of intermittent with semi-continuous exposure to acetaldehyde, formaldehyde, and acrolein.
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We investigated whether inhaling peak concentrations of aldehydes several times daily is more damaging than semi-continuously inhaling low-dose aldehydes. We exposed Xpa-/-p53+/- knock-out mice either intermittently or semi-continuously to mixed acetaldehyde, formaldehyde, and acrolein. The
Respiratory tract responses in male rats following subchronic acrolein inhalation.
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The goal of this study was to characterize the respiratory tract toxicity of acrolein, including nasal and pulmonary effects, in adult male F344 rats. Animals underwent whole-body exposure to 0, 0.02, 0.06, 0.2, 0.6, or 1.8 ppm acrolein for 6 hr/day, five days/week for up to 65 exposure days (13
Electronic excitations in a dielectric continuum solvent with quantum Monte Carlo: acrolein in water.
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We investigate here the vertical n → π(*) and π → π(*) transitions of s-trans-acrolein in aqueous solution by means of a polarizable continuum model (PCM) we have developed for the treatment of the solute at the quantum Monte Carlo (QMC) level of the theory. We employ the QMC approach which allows
Poly(Acrolein-co-β-Cyclodextrin) Functionalized Magnetic Nanoparticles for Selective CD45-Positive Cells Capturing.
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In this work, a new magnetic nanocomposite was prepared for the specific isolation of CD45 positive cells. Acrolein (AC) and acrylated β-cyclodextrin (ACD) were used as monomers in order to polymerize on the surface of Fe₃O₄ magnetic nanoparticles (MNPs) via surface initiated radical polymerization.
Ultrastructure of lipid bodies in Tilletia caries teliospores.
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The ultrastructure of lipid bodies within developing, dormant, and germinating Tilletia caries (DC). Tul. (race T-16) teliospores was studied by freeze-etching and thin-sectioning techniques. When teliospores were prefixed in sodium cacodylate-buffered glutaraldehyde-acrolein for 24 h before further
Identification of acrolein metabolites in human buccal cells, blood, and urine after consumption of commercial fried food.
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Sources of free radicals and oxidative stress in the oral cavity.
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OBJECTIVE
An oral cavity is a place especially susceptible to oxidative damage. It is subjected to many environmental pro-oxidative factors or factors that have the ability to generate reactive oxygen species (ROS). The aim of this article is to present the main sources of ROS and oxidative stress
Voltage and e-liquid composition affect nicotine deposition within the oral cavity and carbonyl formation
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Introduction: The diversity of e-liquids along with higher powered e-cigarette nicotine delivery devices are increasing. This study evaluated the effect of voltage and e-liquid composition on particle size, nicotine deposition in a human
Sensory irritation response in rats II: recovery and dose-dependence.
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Inhaled irritants can cause respiratory depression by simulating trigeminal nerves in the nasal cavity. This decrease in inhalation rate results in a decrease in the rate of the irritant gases flowing to the stimulated nerves, creating a complex feedback response. Previously, a model was created to
Probable benefits of green tea with genetic implications.
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Tea is produced from the Camellia sinensis plant and can generally be divided into categories based on how they are processed. In general, green tea that is unfermented C. sinensis has been considered superior to black tea in health benefits. It contains a unique set of catechins that possess
TG-FTIR-MS (Evolved Gas Analysis) of bidi tobacco powder during combustion and pyrolysis.
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Bidi smoke, a complex mixture of toxic and carcinogens chemicals causes a large and growing number of premature deaths in South Asian countries especially in India and Bangladesh. The evolved products during the thermal degradation of bidi tobacco powder (BTP) have been measured by using TG-FTIR-MS
NTP toxicology and carcinogensis Studies of 2,4-hexadienal (89% trans,trans isomer, CAS No. 142-83-6; 11% cis,trans isomer) (Gavage Studies).
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2,4-Hexadienal, a colorless to yellow liquid with a pungent "green" or citrus odor, is used as a food additive for flavor enhancement, as a fragrance agent, as a starting material or intermediate in synthetic reactions in the chemical and pharmaceutical industries, as a fumigant, and as a corrosion
Impact of Atomizer Age and Flavor on in vitro Toxicity of Aerosols from a Third-Generation Electronic Cigarette against Human Oral Cells
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Electronic cigarettes (ECs) are categorized into generations which differ in terms of design, aerosol production, and customizability. Current and former smokers prefer third-generation devices that satisfy tobacco cravings more effectively than older generations. Recent studies indicate that EC
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