Results 131 to 140 of about 60,850 (257)
Angewandte Chemie, EarlyView.A metal‐free fluorinated ketazine‐linked COF is introduced as an efficient electrocatalyst for nitrate reduction to ammonia under neutral conditions. Fluorine substitution enhances π–π stacking and crystallinity, enabling a Faradaic efficiency of 59.9% and an NH3 yield rate of 1639.9 µmol h−1 mgCOF−1 at −0.9 V versus RHE. This establishes an unexplored
Islam E. Khalil +12 more
wiley +2 more sources
Molecular Design Strategies for High‐Voltage Organic Cathodes
Advanced Energy Materials, EarlyView.This work proposes molecular engineering strategies for high‐voltage organic cathode materials for Li‐ion batteries: (1) increase Li‐O coordination number (CN), (2) achieve a greater increase in aromaticity upon reduction (∆Aromaticity), and (3) add an electron‐withdrawing group (EWG), through a combined experimental and computational study on reported
Sungil Hong +8 more
wiley +1 more source
Enhanced Formation of Dicarboxylic Acids in the Catalytic Oxidation of Polyethylene With O2 and NOx
Angewandte Chemie, EarlyView.The oxidation of polyethylene in the presence of a mixture of O2 and NOx and with Cu2+/V5+ as catalyst yields ∼51 mol% diacids, while retaining ∼80 mol% of the carbon in the oil fraction. The developed method is robust and tolerates several polymer types as well as impurities.
Tom J. Smak +3 more
wiley +2 more sources
Synthesis of the small peptide analogues of cyclin dependent kinase (CDK4) for cancer treatment
Cyclin-dependent kinases (CDKs) are a group of enzymes that are involved in cell cycle progression regulation. The CDKs activate host proteins through phosphorylation on serine or threonine using adenosine triphosphate as a phosphate donor.
Romsaiyud, Jariya
core
, 1998 The induction of activity of the enzyme nitrate reductase (NR, EC 1.6.6.1, 1.6.6.2) in needles of Norway spruce (Picea abies[L.] Karst.) by nitrogen dioxide (NO2) was studied under laboratory and field conditions.
Brunold, Christian +4 more
core +1 more source
Angewandte Chemie, EarlyView.Die Kontrolle biologischer Systeme mit organischen Chromophoren hat sich zu einer vielversprechenden Strategie entwickelt und findet Anwendung von der chemischen Biologie bis hin zur Medizin. Die Komplexität von In‐vivo‐Systemen lässt sich jedoch nicht mit nur einer einzigen Lichtwellenlänge adäquat abbilden.
Nadja A. Simeth
wiley +1 more source
Unlocking a Nitrosuccinate Lyase for Decarboxylative Enzymatic Hydronitration
Angewandte Chemie, EarlyView.The nitrosuccinate lyase CreD catalyzes C–NO2 bond formation using nitrite in water and shows synthetic practicality with high turnover numbers up to 102,000. A combination of protein engineering and computational methods helped to reveal the mechanistic principles that underpin this unique enzymatic activity.
Matteo Aleotti +9 more
wiley +2 more sources
OUTDOOR POLLUTION AND LOW BIRTH WEIGHT
نشریه پرستاری ایران, 2003 Air pollution, as an environmental factor affects the health status and growth of the fetus, considering that the air pollutants have dramatically increased in Tehran, reviewing the effects of them on the health situation of infants, which are very ...
A Bagher Zade +3 more
doaj
Light‐Activated Isolation of High‐Quality Mitochondria for Therapeutic Transplantation
Angewandte Chemie, EarlyView.The Light‐Activated Mitochondrial Isolation (LAMI) platform enables the selective and non‐destructive isolation of high‐purity, metabolically active mitochondria. By integrating modular, ligand‐programmable magnetic probes with photo‐cleavable release, LAMI overcomes long‐standing limitations of conventional isolation methods and provides a robust ...
Hui Liu +12 more
wiley +2 more sources
A new simplified NO/NO2 conversion model under consideration of direct NO2-emissions
, 2011 Although many German monitoring sites report declines of NOx concentrations, NO2-concentrations actually stagnate or even increase quite often. Various analyses have identified the altered compositions of nitrogen oxides (NO2/NOx-ratio) emitted by motor ...
M. Ketzel +5 more
core +1 more source