Results 321 to 330 of about 3,830,075 (379)
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Multi-functional metasurface: ultra-wideband/multi-band absorption switching by adjusting guided-mode resonance and local surface plasmon resonance effects

Communications in Theoretical Physics
This study introduces an innovative dual-tunable absorption film with the capability to switch between ultra-wideband and narrowband absorption. By manipulating the temperature, the film can achieve multi-band absorption within the 30–45 THz range or ...
Wenxin Li   +8 more
semanticscholar   +1 more source

Anomalous absorption of electromagnetic waves by 2D transition metal carbonitride Ti3CNTx (MXene)

Science, 2020
Shields up! Specialized conductive materials are used to shield or block electromagnetic radiation such as microwaves or radio waves to either prevent the escape of stray radiation or prevent interference from unwanted sources.
A. Iqbal   +9 more
semanticscholar   +1 more source

An absorption profile centred at 78 megahertz in the sky-averaged spectrum

Nature, 2018
After stars formed in the early Universe, their ultraviolet light is expected, eventually, to have penetrated the primordial hydrogen gas and altered the excitation state of its 21-centimetre hyperfine line.
J. Bowman   +4 more
semanticscholar   +1 more source

Absorption, metabolism and bioavailability of flavonoids: a review

Critical reviews in food science and nutrition, 2021
Flavonoids are stored in various plants and widely presented in different kinds of food in variable amounts. Plant roots, stems, leaves, flowers and fruits are known to have high amounts of flavonoids.
Lei Chen   +4 more
semanticscholar   +1 more source

Galvanic Replacement Reaction Involving Core-Shell Magnetic Chains and Orientation-Tunable Microwave Absorption Properties.

Small, 2020
Electromagnetic (EM) wave absorption materials have attracted considerable attention because of EM wave pollution caused by the proliferation of electronic communication devices.
Biao Zhao   +6 more
semanticscholar   +1 more source

Nutrient absorption

Current Opinion in Gastroenterology, 2000
Some key advances occurred last year in understanding mechanisms involved in nutrient absorption. A novel "prechylomicron transport vesicle" was identified; its movement to the Golgi is the rate-limiting step for triacylglycerol absorption. A scavenger receptor (type BI) in the brush border membrane appears to facilitate cholesterol uptake.
S A, Siddiqi   +4 more
openaire   +2 more sources

Fructose absorption

The American Journal of Clinical Nutrition, 1993
Fructose found in modern diets as a constituent of the disaccharide sucrose is absorbed by a well-characterized absorptive system integrating enzymatic hydrolysis of the disaccharide and transfer of the resulting two monosaccharides through the apical membrane of the epithelial cell.
J E, Riby, T, Fujisawa, N, Kretchmer
openaire   +2 more sources

Nutrient absorption

Current Opinion in Gastroenterology, 1998
Interesting advances occurred recently in nutrient absorption. Kinetics of triacylglycerol appearance in endoplasmic reticulum, Golgi apparatus, and lymph support the hypothesis that endoplasmic reticulum-to-Golgi transport is rate-limiting for lipid absorption. Apolipoprotein B does not appear necessary for initial formation of chylomicron-sized lipid
D F, Nutting   +3 more
openaire   +3 more sources

Nutrient absorption

Current Opinion in Gastroenterology, 2001
Many advances in the study of nutrient absorption have been made with the use of molecular and genetic techniques; however, standard in vivo studies have provided interesting and important new information. Omega-3 long-chain fatty acids have unexpected effects on lipoprotein formation and secretion in neonatal intestinal cells; this needs to be ...
Shadab A., Siddiqi   +3 more
openaire   +3 more sources

Cholesterol absorption

Current Opinion in Gastroenterology, 2002
Cholesterol absorption is a key regulatory point in human lipid metabolism because it determines the amount of endogenous biliary as well as dietary cholesterol that is retained, thereby influencing whole body cholesterol balance. Plant sterols (phytosterols) and the drug ezetimibe reduce cholesterol absorption and low-density lipoprotein cholesterol ...
openaire   +2 more sources

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