Results 91 to 100 of about 107,082 (295)

Role of stable hydrogen isotope variations in water for drug dissolution managing

Current Issues in Pharmacy and Medical Sciences, 2020
In the present work, we provide the results of defining by utilizing Laser diffraction spectroscopy, the kinetic isotopic effect of solvent and constant of dissolution rate κ, s−1 of аn active pharmaceutical ingredient (API) in water with a different ...
Uspenskaya Elena V., Pleteneva Tatyana V., Syroeshkin Anton V., Kazimova Ilaha V., Elizarova Tatyana E., Odnovorov Artem I.   +5 more
doaj   +1 more source

Limits of complete equilibration of fragments produced in central Au on Au collisions at intermediate energies

, 2003
Experimental data related to fragment production in central Au on Au collisions were analyzed in the framework of a modified statistical model which considers cluster production both prior and at the equilibrated stage.
), ), ), ), ), ), ), A.S. Botvina, Albergo, Bondorf, Bondorf, Bondorf, Botvina, Butler, Cibor, Csernai, D'Agostino, Das, Dessesquelles, Doss, Fai, Fermi, Gross, Gutbrod, Hahn, Heide, Huang, Mekjian, Müntz, Neubert, Pochodzalla, Reisdorf, Scharenberg, Siemens, Stöcker, W. Neubert, Wallerstein, Xi   +37 more
core   +1 more source

The oxygen isotope effect on critical temperature in superconducting copper oxides [PDF]

, 2004
The isotope effect provided a crucial key to the development of the BCS (Bardeen-Cooper-Schrieffer) microscopic theory of superconductivity for conventional superconductors.
A Mourachkine, Alexandrov A S, Bednorz J G, Davydov A S, Davydov A S, Ermakov V N, Greco A, Mourachkine A, Mourachkine A   +8 more
core   +1 more source

A Review on Microreactor Design for Effective Fischer–Tropsch Process Intensification

Advanced Materials Technologies, EarlyView.
Design strategies for effective Fischer–Tropsch process intensification are summarized based on experimental and simulation experiences. Recommendations for catalyst loading of packed‐bed and wash‐coated microchannel, microtube, micromonolith, and microstructured reactors are discussed.
Yangjun Wei, Lukas Thum, Avela Kunene, Daniel Amkreutz, Rutger Schlatmann, Sonya Calnan   +5 more
wiley   +1 more source

The Influence of Deuterium on the Properties of Pharmaceutical Substances (Review)

Разработка и регистрация лекарственных средств, 2020
Introduction. The study discusses the hydrogen isotope 2H effect on the biological activity of pharmaceutical substances.Text. Two aspects of the deuterium effect on the properties of active pharmaceutical ingredients and excipients are considered.
A. V. Syroeshkin, T. E. Elizarova, T. V. Pleteneva, E. V. Uspenskaya, O. V. Levitskaya, I. A. Zlatskiy, T. V. Maksimova   +6 more
doaj   +1 more source

Strong Proton‐Phonon Coupling Drives Fast Ion Transport in Perovskites

Advanced Science, EarlyView.
Experimental and computational phonon analysis of ABO3‐type proton conductor BaSnO3 shows that substitution on the B‐site with yttrium forms an imaginary phonon mode which is instrumental for the function as proton conductor. This overcompensates the adverse proton trapping effect of the yttrium.
Alexey Rulev, Nobumoto Nagasawa, Hongxin Wang, Vladimir Pomjakushin, Martin Kunz, Yoshitaka Yoda, Stephen P. Cramer, Qianli Chen, Artur Braun   +8 more
wiley   +1 more source

Theoretical Analysis on the Kinetic Isotope Effects of Bimolecular Nucleophilic Substitution (SN2) Reactions and Their Temperature Dependence

Molecules, 2013
Factors affecting the kinetic isotope effects (KIEs) of the gas-phase SN2 reactions and their temperature dependence have been analyzed using the ion-molecule collision theory and the transition state theory (TST).
Wan-Chen Tsai, Wei-Ping Hu
doaj   +1 more source

Balanced Expression of the Diiron Oxygenase BioE Is Essential for Biotin Homeostasis in Elizabethkingia meningoseptica

Advanced Science, EarlyView.
BioE is a new diiron oxygenase that catalyzes the conversion of long‐chain acyl groups into pimeloyl thioester, initiating biotin synthesis. The overexpression of EmBioE disrupts lipid metabolic homeostasis, requiring repressor BioL to maintain a balance between long‐chain fatty acids and biotin synthesis.
Meng Zhang, Ying‐ying Fu, Xiaoqiang Yang, Qiuying Qin, Xinyu Su, Jiaming Fang, Yanhua Kang, Qingwen He, Zhi Ruan, Yongchang Xu   +9 more
wiley   +1 more source

Linking Protein Motion to Enzyme Catalysis

Molecules, 2015
Enzyme motions on a broad range of time scales can play an important role in various intra- and intermolecular events, including substrate binding, catalysis of the chemical conversion, and product release.
Priyanka Singh, Thelma Abeysinghe, Amnon Kohen   +2 more
doaj   +1 more source

Terrestrial and fluvial carbon fluxes in a tropical watershed: Nyong basin, Cameroon [PDF]

, 2009
The Nyong watershed, with an area of 27 800 km2 and a mean annual discharge of 390 m3 s−1, is the second largest river in Cameroon. The Nyong watershed serves as an outstanding study area for the examination of carbon fluxes in humid tropical ...
Boeglin, Jean-Loup, Brunet, Frédéric, Dubois, Krystel, Ndam-Ngoupayou, Jules-Rémy, Nkoue Ndondo, Gustave Raoul, Probst, Jean-Luc, Veizer, Jan   +6 more
core   +2 more sources