Results 141 to 150 of about 425,899 (353)
Metabolism of 11-oxygenated steroids. 2. 2-Methyl steroids [PDF]
, 1959 I. E. Bush, V.B. Mahesh
openalex +1 more source
Advanced Synthesis &Catalysis, EarlyView.Abstract The use of stable photosensitizers made on a multigram‐scale from cheap and available starting materials offers an extraordinary opportunity to translate small‐scale proof‐of‐concept photoreactions to widespread applications in non‐specialized laboratories, thereby promoting the implementation of light‐driven syntheses.
Steven Sittel +5 more
wiley +1 more source
Atroposelective Arene‐Forming Alkene Metathesis**
Angewandte Chemie, Volume 134, Issue 51, December 19, 2022., 2022 The feasibility of alkene metathesis to catalytically control stereogenic axes by traceless arene formation is reported. Key to the process is a selective conversion of stereodynamic trienes by a chiral molybdenum catalyst, providing configurationally‐stable atropisomers under mild conditions in excellent yields with up to 98 : 2 e.r.
Zlatko Jončev, Christof Sparr
wiley +2 more sources
Majallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2012 Background and Objectives: Results of many studies suggest that prone position is effective in improving oxygenation. This study aims at comparing supine and prone positions on oxygenation of premature infants with respiratory distress syndrome who are ...
F Ghorbani, S Valizadeh, M Asadollahi
doaj
Oxidation control in a modern brewery (part1).
Kvasný průmysl, 2001 The research center Meura Technologies of Belgian company Meura has studied an oxygen effect during malt grinding, mashing, mash filtration in mash filter and fermentation upon to changes of beer's flawour during storage.
J. VANDENBUSSCHE, L. MOJDL
doaj +1 more source
Insight into the Role of Oxygen in Phase-Change Material GeTe [PDF]
arXiv, 2016 Oxygen is widely used to tune the performance of chalcogenide phase-change materials in the usage of phase-Change random access memory (PCRAM) which is considered as the most promising next-generation non-volatile memory. However, the microscopic role of oxygen in the write-erase process, i.e., the reversible phase transition between crystalline and ...
arxiv
EXPERIENCES USING THE PUMP-OXYGENATOR FOR OPEN CARDIAC SURGERY IN MAN [PDF]
, 1957 David Mendelsohn +4 more
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Advanced Synthesis &Catalysis, EarlyView.Abstract α‐Chiral amines are versatile building blocks for the asymmetric synthesis of optically pure high‐added‐value chemicals, including pharmaceuticals, agrochemicals, and natural products. Herein, we report a one‐pot, two‐step sequential deracemization of racemic sec‐alcohols to optically enriched primary amines throught a photo‐biocatalytic ...
Natalia Antos +5 more
wiley +1 more source
Exercise Intensity Influences Prefrontal Cortex Oxygenation during Cognitive Testing
Behavioral Sciences, 2019 Activation changes in the prefrontal cortex (PFC) regions have been linked to acute exercise-induced improvements in cognitive performance. The type of exercise performed may influence PFC activation, and further impact cognitive function.
Terence Moriarty +3 more
doaj +1 more source
Hole polaron assisted oxygen ion migration in Li$_2$MnO$_3$ [PDF]
arXiv, 2019 Oxygen ion migration in Li2MnO3 was systematically studied by first-principles calculations. Hole polaron is found effective to lower the migration barrier of oxygen ion.
arxiv