Results 81 to 90 of about 25,395 (287)

Electronic structures of acyl nitrites and nitrates

, 2006
The gas phase electronic structures of CM3C(O)ONO and CM3C(O)ONO2 (M = H, Cl, F) are studied by photoelectron spectroscopy (PES) combined with the outer valence Green's function (OVGF) calculations at 6-311 + G(d, p) basis sets.
Sun, Qiao, Zeng, Xiaoqing, Wang, Weigang, Liu, Fengyi, Zhang, Jianping, Wang, Dianxun, Yao, Li, Sun, Zheng, Ge, Maofa   +8 more
core   +1 more source

Bioinspired Interfacial Hydration Engineering via Metal–Organic Frameworks for Efficient Nitrate‐To‐Ammonia Conversion in Neutral Media

Advanced Science, EarlyView.
Inspired by Nitrite reductase, a metal–organic framework overlayer is introduced to regulate the interfacial hydration microenvironment on Cu electrodes, enriching hydrated K+ species that act as efficient proton donors. This strategy enables nitrate‐to‐ammonia conversion with near‐unity selectivity at industrial‐level current densities in neutral ...
Yuyin Mao, Minghui Zhang, Xiangdong Xue, Chengyu Guo, Jian Liu   +4 more
wiley   +1 more source

Direct δ‐Lactone Synthesis From Free Alcohols via Photoinduced δ‐C(sp3)–H Carbonylation in Flow

Angewandte Chemie, EarlyView.
Herein, we have developed a photo‐flow platform for the δ‐C(sp3)─H carbonylative lactonization of free alcohols with carbon monoxide. The transformation integrates alkoxyl radical generation, selective 1,5‐HAT, CO incorporation, and radical–polar crossover to enable direct access to δ‐lactones from simple alcohol precursors.
Prakash Chandra Tiwari, Runkang Liu, Timothy Noël   +2 more
wiley   +2 more sources

Evaluation of the effect of different methods of curacy on women with adenomyosis in the first half of pregnancy on the development of early gestative complications

Journal of Education, Health and Sport, 2019
Pregnancy in women with adenomyosis has an increased risk of multiple obstetric complications, especially early pregnancy losses. The purpose of the study was to conduct a comparative analysis of the impact of different methods of curation of pregnant ...
O. M. Nosenko, O. M. Kosyuga
doaj   +1 more source

A New Customizable Surfactant LLPS Strategy for Sustainable and Highly Efficient Radioactive Metal Ion Separation

Advanced Science, EarlyView.
A diluent‐free, customizable liquid–liquid phase separation (LLPS) platform enables highly efficient radioactive metal ion extraction and stripping. By encapsulating hydrophobic extractants into an ionic surfactant‐rich condensed phase, this LLPS system leverages synergistic electrostatic and coordination interactions.
Ruihan Yan, Yifu Hu, Wentao Wang, Zhi Cao, Meiwen Cao, Weifang Zheng, Guoan Ye, Taihong Yan   +7 more
wiley   +1 more source

Ketazine‐Linked Covalent Organic Framework for Metal‐Free Electrocatalytic Nitrate‐to‐Ammonia Conversion

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, Ashadul Adalder, Badr Elkamash, Narad Barman, Darosch Asgari, Luoxing Xiang, Warisha Tahir, Franziska Hess, Ranjit Thapa, Adisak Boonchun, Uttam Kumar Ghorai, Prasenjit Das, Arne Thomas   +12 more
wiley   +2 more sources

Usefulness of urinal urinalysis and urine gram stain in the diagnosis of rinary tract infection in hospitalized patients Utilidad del citoquímico y la coloración de Gram en muestras de orina en el diagnóstico de las infecciones del tracto urinario en pacientes hospitalizados.

Iatreia, 2005
Objective: To evaluate the usefulness of urinalysis and of urine Gram stain in the diagnosis of urinary tract infection in hospitalized patients. Design and sample: Urinalysis and Gram stain of non centrifuged urine were carried out according to the ...
Sergio Jaramillo Velásquez, Claudia Yarely Maya Carmona, Ana Cristina Restrepo Ceballos, Olga Lucía Molina Upegui, Mónica Cecilia Curtas Trujillo, Jaime Alberto López Vargas, Jorge Hernando Donado Gómez   +6 more
doaj  

Nitrates and Nitrites in meat products

, 2018
Τα νιτρικά και νιτρώδη άλατα χρησιμοποιούνται εκτεταμένα στην βιομηχανία του κρέατος καθώς συμβάλλουνσημαντικά τόσο στην βελτίωση των ποιοτικών χαρακτηριστικών, όσο και στην ασφάλεια των προϊόντων του κρέατος.
PEXARA (Α. ΠΕΞΑΡΑ), A., GOVARI (Μ. ΓΚΟΒΑΡΗ), M.   +1 more
core  

Aptamer‐Directed Porous DNA Nanocomposite Hydrogel for Active Pulp Preservation: Immunomodulation, Stem Cell Recruitment and Reparative Dentinogenesis

Advanced Science, EarlyView.
This study presents an injectable DNA‐based porous hydrogel integrating catechol motifs and targeting aptamers for pulpitis management. Upon in situ crosslinking, the scaffold actively recruits endogenous dental pulp stem cells, restores redox homeostasis, and modulates immune responses.
Luhui Cai, Huan Yu, Zihan Ni, Kan Chen, I‐Chen Tsai, Zeyu Bao, Shuo Sun, Weichang Li, Yunhua Chen, Qiong Xu   +9 more
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, Hannah Dreisbach, Rémi Corlay, Clara Weber, Tamara Reiter, Wael Elaily, Bastian Daniel, Klaus Zangger, Pedro A. Sánchez‐Murcia, Mélanie Hall   +9 more
wiley   +2 more sources