Results 91 to 100 of about 114,247 (266)

院前预通知流程改善急性缺血性卒中患者血管内治疗的预后 Prehospital Notification Procedure Improves Endovascular Treatment Outcome in Patients with Acute Ischemic Stroke

Zhongguo cuzhong zazhi, 2018
目的 血管内治疗的效益具有时间依赖性，120急救系统（emergency medical service，EMS）通过院 前预通知卒中中心可以缩短起病到治疗的时间。本研究旨在观察EMS院前预通知流程（prehospital notification procedure，PNP）能否减少急性大血管闭塞（large vessel occlusion，LVO）患者血管内治疗的院 内延误时间，及其对预后的影响。 方法 回顾性分析连续收集的行血管内治疗的LVO患者临床和影像资料。通过EMS入院并提前通知 ...
张美霞，陈智才，张睿婷，史飞娜，楼敏
doaj   +1 more source

Novel ^iPrRu-MACHO Salts: Synthesis and Catalytic Applications With Diverse H-Trans Ligands. [PDF]

ChemSusChem
We report novel trans‐L monohydrido iPrRu‐MACHO derivatives as precatalysts operating under mild conditions with high activity and selectivity. Their performance in CO2 hydrogenation, formic acid dehydrogenation, and levulinic acid hydrogenation was evaluated and compared to the commercial iPrRu‐MACHO precursor, offering improved catalytic efficiency ...
Tran TA, Nori V, Nikol AT, Schoeler A, Nielsen MT, Jørgensen MSB, Kubus M, Larsen RW, Nielsen M.   +8 more
europepmc   +2 more sources

Machine learning‐driven advances in carbon‐based quantum dots: Opportunities accompanied by challenges

Responsive Materials, EarlyView.
Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen, Siwei Yang, Xiangqian Cui, Ziheng Liu, Hang Wang, Yongqiang Li, Peng He, Miao Wang, Guqiao Ding   +8 more
wiley   +1 more source

A Neutral Linear Cobalt(I) Silylamide as a Platform for Alkyne Cyclotrimerization and an Intermediate‐Spin Imido Cobalt Complex

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
A new ly synthesized is employed in cyclotrimerisation of diphenylacetylene and platform for an imido cobalt complex. The imidocomplex is found in an intermediate‐spin state w ith an ambiguous electronic situation. Additional computational analyses hint to ananionic charge of imido complexes as a benefactor for a high‐spin state.
Andres Gonzalez, C. Gunnar Werncke
wiley   +1 more source

Biodegradation Modeling of Nitrophenolic Pollutant in a Slurry Bubble Reactor

Journal of Chemical and Petroleum Engineering, 2014
Biodegradation kinetics of 4-nitrophenol (PNP) in aqueous solution by a gram negative soil bacterium, Ralstoniaeutropha was firstly studied in a small scale batch reactor.
Zeinab Salehi, Shohreh Fatemi, Farzaneh Vahabzadeh   +2 more
doaj   +1 more source

Scaffold Dependent Coordination Modes of Chelating PEP‐Type Ligands in Iron(0) Carbonyl Complexes (E = O, S)

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
The reaction of iron pentacarbonyl with various chelating diphosphine ligands containing oxygen or sulfur atoms in their backbone yields complexes that exhibit noteworthy coordination behavior. Depending on the natural bite angle of the ligands and the coordination behavior of the heteroatom, preferences regarding the coordination geometry are verified
Jonas Wohlrab, Philipp Schatz, Matthias Vogt, Robert Langer   +3 more
wiley   +1 more source

Glucose and Applied Voltage Accelerated p-Nitrophenol Reduction in Biocathode of Bioelectrochemical Systems

Frontiers in Microbiology, 2018
p-Nitrophenol (PNP) is common in the wastewater from many chemical industries. In this study, we investigated the effect of initial concentrations of PNP and glucose and applied voltage on PNP reduction in biocathode BESs and open-circuit biocathode BESs
Xinyu Wang, Defeng Xing, Xiaoxue Mei, Bingfeng Liu, Nanqi Ren   +4 more
doaj   +1 more source

Structural insights into urocanate reductase using room‐temperature X‐ray crystallography

Acta Crystallographica Section D, EarlyView.
The active‐site dynamics of the microbial enzyme urocanate reductase were revealed by room‐temperature X‐ray crystallography.Urocanate reductase (UrdA) is a bacterial enzyme that converts urocanic acid to imidazole propionate. Its catalytic residue Arg411 undergoes a large conformational change in the substrate‐bound versus product‐bound states.
Swati Aggarwal, Nitisha Gurav, Esko Oksanen, Karin Lindkvist-Petersson, Raminta Venskutonytė   +4 more
wiley   +1 more source

Rational acquisition of laboratory equipment: an accurate mathematical model to estimate the trade‐offs in shared and nonshared equipment

Acta Crystallographica Section D, EarlyView.
We present a quantitative framework combining cost modelling and queueing theory to estimate hourly access costs, waiting times and congestion levels for shared high‐end scientific equipment. The approach is general, illustrated with cryo‐electron microscopy examples, and implemented in an open‐access online calculator to support evidence‐based ...
C. O. S. Sorzano, J. M. Carazo
wiley   +1 more source

Double-Ligand [Fe/PNP/PP₃] and Their Hybrids [Fe/SiO₂@PNP/PP₃] as Catalysts for H₂-Production from HCOOH

Energies
Two types of iron-based catalysts, [Fe/SiO2@iProPNP/PP3] and [Fe/SiO2@tBuPNP/PP3], for the dehydrogenation of formic acid (FADH), were synthesized. These catalysts were developed using a double-ligand approach combining a PNP ligand and a PP3 ligand ...
Marinos Theodorakopoulos, Maria Solakidou, Yiannis Deligiannakis, Maria Louloudi   +3 more
doaj   +1 more source