Results 61 to 70 of about 804,715 (287)
Ammonia Synthesis at Room Temperature and Atmospheric Pressure from N2: A Boron‐Radical Approach
Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 Boron‐centered radicals, generated by reduction of R2BCl derivatives, react with N2 all the way to borylamine formation. DFT calculations rationalize the reduction/functionalization process, involving N−N bond splitting. Hydrolysis of the mixture yields NH4+. Radical addition to N2 provides a new strategy for N2 fixation.
Soukaina Bennaamane +6 more
wiley +1 more source
The Contributions of James Moir to Physical Chemistry [PDF]
, 2014 James Moir was a pioneering chemist in the early 1900s who played a leading role in various chemical societies in South Africa. Although he was mainly an organic chemist, he was a very good all-round chemist, whose analytical and organic activities have ...
Loyson, P
core +1 more source
Chemistry research in India in a global perspective- A scientometrics profile [PDF]
arXiv, 2020 Papers from India are cited 14.68 times on average compared to cites per paper of 45.34 for Singapore, 30.47 for USA, 23.12 for China, 26.51 for the UK, 21.77 for South Korea and 24.77 for Germany. Less than 39% of papers from India are found in quartile 1 (high impact factor) journals, compared to 53.6% for China and 53.8% for South Korea.
arxiv
Estimating numerical errors due to operator splitting in global atmospheric chemistry models: Transport and chemistry [PDF]
Journal of Computational Physics, 2015, 2015 We present upper bounds for the numerical errors introduced when using operator splitting methods to integrate transport and non-linear chemistry processes in global chemical transport models (CTM). We show that (a) operator splitting strategies that evaluate the stiff non-linear chemistry operator at the end of the time step are more accurate, and (b)
arxiv +1 more source
Superchaotropic Nano‐ion Binding as a Gelation Motif in Cellulose Ether Solutions
Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 Nano‐ions, like polyoxometalates and boron clusters, co‐assemble strongly with non‐ionic solutes in water driven by the chaotropic effect. Here, nano‐ion assembly with non‐ionic cellulose ethers (CE) is shown to result in unprecedented thickening effects and gelation of CE‐solutions. An interplay of electrostatic repulsion and attraction between chains
Max Hohenschutz +4 more
wiley +1 more source
Photo-induced luminescence [PDF]
, 2008 The present paper is a critical review dealing with the characteristics, reaction mechanisms and photoproducts, instrumentation and analytical applications of the photo-induced either chemiluminescence or fluorescence.
Catalá Icardo, Mónica +1 more
core +1 more source
Salicylate method for ammonia quantification in nitrogen electroreduction experiments: The correction of iron III interference [PDF]
, 2020 [EN] The salicylate method is one of the ammonia quantification methods that has been extensively used in literature for quantifying ammonia in the emerging field of nitrogen (electro)fixation.
Giner-Sanz, Juan José +3 more
core +1 more source
Gas phase production of NHD2 in L134N [PDF]
, 2001 We show analytically that large abundances of NH2D and NHD2 can be produced by gas phase chemistry in the interiors of cold dense clouds. The calculated fractionation ratios are in good agreement with the values that have been previously determined in L134N and suggest that triply-deuterated ammonia could be detectable in dark clouds.
arxiv +1 more source
Guest Editorial: Special Topic on Data-enabled Theoretical Chemistry [PDF]
Matthias Rupp, O. Anatole von Lilienfeld, Kieron Burke: Guest
Editorial: Special Topic on Data-enabled Theoretical Chemistry, The Journal
of Chemical Physics 148(24): 241401, 2018, 2018 A survey of the contributions to the Special Topic on Data-enabled Theoretical Chemistry is given, including a glossary of relevant machine learning terms.
arxiv +1 more source
Arthritis Care &Research, EarlyView.Objective This work aimed to evaluate the pharmacokinetics, efficacy, and safety of upadacitinib, an oral selective JAK inhibitor, in pediatric patients with polyarticular‐course juvenile idiopathic arthritis (pcJIA). Methods In an open‐label, phase 1 study (SELECT‐YOUTH), enrolled patients, aged 2 to <18 years with pcJIA, received body weight–based ...
Hermine I. Brunner +12 more
wiley +1 more source