Results 31 to 40 of about 37,659 (260)
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source
Nature Communications, 2020 High-performance transition metal catalysts are a major driving force in academic and industrial polyolefin research. Here the authors show the synthesis and (co)polymerization studies of a simple and versatile α-imino-ketone nickel system, which is ...
Tao Liang +2 more
doaj +1 more source
Optimization of the Production of Rubber Compounds Using Mathematical Models
Advanced Engineering Materials, EarlyView.Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle +7 more
wiley +1 more source
Polymerization of Ethylene Catalyzed by Vanadium(III) Complexes
Orbital: The Electronic Journal of Chemistry, 2017 Thirty five complexes of 1,2- bis(benzimidazole, benzothiazole and benzoxazole)benzene, 1,2-bis(benzimidazole, benzothiazole and benzoxazole)-4-methyl-benzene, 1,2-bis (benzimidazole, benzothiazole and benzoxazole)4-bromobenzene, 1, 2-bis ...
Hamdi Ali Elagab
doaj +3 more sources
Polymerization of Ethylene by the Silaned SiO2 -Mg(iBu)2-TiCl4-Al(iBu)3 Catalyst System [PDF]
مجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1992 The polymerization of ethylene was conducted over the Silaned Si02 / Mg(iBu)2 I TiCl I Al (mu)3 and over the Stauffer AA type (1.1)/Al (iBu)3 catalyst systems at 60° C.
M.A. Abu-Eid, P.J. Tait
doaj +1 more source
Engineering, 2023 Olefin solution polymerization can be used to obtain high-performance polyolefin materials that cannot be obtained via other polymerization processes. Polyolefin elastomers (POE) are a typical example.
Changjiang Wu +7 more
doaj +1 more source
Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions
Advanced Functional Materials, EarlyView.DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng +7 more
wiley +1 more source
Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer
Advanced Functional Materials, EarlyView.Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero +12 more
wiley +1 more source
Periodic current oscillations of zinc in nitric acid solutions [PDF]
Journal of the Serbian Chemical Society, 2008 The charge percolation mechanism (CPM) of olefin polymerization in the presence of transition metal compounds has been applied to explain the polymerization of ethylene by silica supported chromium oxide.
ERVIN SALLÓ, FLORIN CRISAN
doaj
Beilstein Journal of Organic Chemistry, 2016 A series of Cr(III) complexes based on quinoline-cyclopentadienyl ligands with additional hemilabile side arms were prepared and used as single-site catalyst precursors for ethylene polymerization.
Stefan Mark +2 more
doaj +1 more source