Results 11 to 20 of about 591,712 (298)

Prins cyclization-mediated stereoselective synthesis of tetrahydropyrans and dihydropyrans: an inspection of twenty years

open access: yesBeilstein Journal of Organic Chemistry, 2021
Functionalized tetrahydropyran (THP) rings are important building blocks and ubiquitous scaffolds in many natural products and active pharmaceutical ingredients (API).
Asha Budakoti   +3 more
doaj   +1 more source

Asymmetric preheating [PDF]

open access: yesInternational Journal of Modern Physics A, 2018
We study the generation of the matter–antimatter asymmetry during bosonic preheating, focusing on the sources of the asymmetry. If the asymmetry appears in the multiplication factor of the resonant particle production, the matter–antimatter ratio will grow during preheating.
Seishi Enomoto, Tomohiro Matsuda
openaire   +2 more sources

In Vivo Nanodetoxication for Acute Uranium Exposure

open access: yesMolecules, 2015
Accidental exposure to uranium is a matter of concern, as U(VI) is nephrotoxic in both human and animal models, and its toxicity is associated to chemical toxicity instead of radioactivity. We synthesized different PAMAM G4 and G5 derivatives in order to
Luis Guzmán   +4 more
doaj   +1 more source

New Subclass Framework and Concrete Examples of Strongly Asymmetric Public Key Agreement

open access: yesApplied Sciences, 2021
Strongly asymmetric public key agreement (SAPKA) is a class of key exchange between Alice and Bob that was introduced in 2011. The greatest difference from the standard PKA algorithms is that Bob constructs multiple public keys and Alice uses one of ...
Satoshi Iriyama   +2 more
doaj   +1 more source

Gain-Scheduled Control of Asymmetric Thrust Magnetic Bearing

open access: yesActuators, 2021
The thrust position of the magnetic levitation rotor can be changed, bringing convenience to the practical application of cold compressors. This paper derives the mathematical model of asymmetric thrust magnetic bearings for a cold compressor and ...
Shuyue Zhang, Jihao Wu
doaj   +1 more source

Removal of 4-Ethylphenol and 4-Ethylguaiacol with Polyaniline-Based Compounds in Wine-Like Model Solutions and Red Wine

open access: yesMolecules, 2015
Volatile phenols, such as 4-ethyphenol (4-EP) and 4-ethylguaiacol (4-EG), are responsible for the “Brett character” found in wines contaminated with Brettanomyces yeast (i.e., barnyard, animal, spicy and smoky aromas).
Verónica Carrasco-Sánchez   +4 more
doaj   +1 more source

Asymmetric Attention [PDF]

open access: yesAmerican Economic Review, 2018
We document that the expectations of households, firms, and professional forecasters in standard surveys simultaneously extrapolate from recent events and underreact to new information. Existing models of expectation formation, whether behavioral or rational, cannot account for these observations.
Walther, A, Kohlhas, A
openaire   +3 more sources

The Effect of Asymmetric Fluctuations of Exchange Rate and Oil Price on Stock Index of Tehran Stock Exchange [PDF]

open access: yesInternational Journal of Business and Development Studies, 2020
The aim of this study was to investigate the asymmetric effects of exchange rate fluctuations on Stock index of Tehran Stock Exchange. For this purpose, we first calculated the exchange rate fluctuations using model General Autoregressive Conditional ...
Naser Seifollahi
doaj   +1 more source

ARC-Net: An Efficient Network for Building Extraction From High-Resolution Aerial Images

open access: yesIEEE Access, 2020
Automatic building extraction based on high-resolution aerial images has important applications in urban planning and environmental management. In recent years advances and performance improvements have been achieved in building extraction through the ...
Yaohui Liu   +9 more
doaj   +1 more source

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