Results 61 to 70 of about 4,463,518 (291)

Impact of cognitive abilities on performance in organic chemistry

Chemistry Teacher International, 2023
The purpose of this study was to observe the relationship between students’ cognitive abilities and their performance in organic chemistry. We were interested in measuring whether some cognitive composites were more predictive than others on organic ...
Nedungadi Sachin, Shenoy Sunaina
doaj   +1 more source

A consistent molecular hydrogen isotope chemistry scheme based on an independent bond approximation [PDF]

, 2009
The isotopic composition of molecular hydrogen (H₂) produced by photochemical oxidation of methane (CH₄) and Volatile Organic Compounds (VOCs) is a key quantity in the global isotope budget of (H<sub>2 ...
Sub Atmospheric physics and chemistry, M. C. Krol, G. Pieterse, T. Röckmann, Krol, M.C., Pieterse, G., Afd Marine and Atmospheric Research, Marine and Atmospheric Research, Röckmann, T.   +8 more
core   +3 more sources

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Highly Reactive Cyclic Monoaryl Iodoniums Tuned as Carbene Generators Couple with Nucleophiles under Metal-Free Conditions

iScience, 2020
Summary: Cross-coupling reactions between aryl iodide and nucleophiles have been well developed. Iodoniums equipped with a reactive C-I(III) bond accelerate cross-coupling reactions of aryl iodide.
Haiwen Wang, Liyun Liang, Zhirong Guo, Hui Peng, Shuang Qiao, Nemai Saha, Daqian Zhu, Wenbin Zeng, Yunyun Chen, Peng Huang, Shijun Wen   +10 more
doaj   +1 more source

Bromine radical as a visible-light-mediated polarity-reversal catalyst

iScience, 2021
Summary: Polarity-reversal catalysts enable otherwise sluggish or completely ineffective reactions which are characterized by unfavorable polar effects between radicals and substrates. We herein disclose that when irradiated by visible light, bromine can
Han Wang, Haiwang Liu, Mu Wang, Meirong Huang, Xiangcheng Shi, Tonglin Wang, Xu Cong, Jianming Yan, Jie Wu   +8 more
doaj   +1 more source

Organic chemistry - Fast reactions 'on water'

, 2005
Efficient reactions in aqueous organic chemistry do not require soluble reactants, as had been thought. A newly developed ‘on-water’ protocol is characterized by short reaction times, and the products are easy to ...
Klijn, JE, Engberts, JBFN
core   +1 more source

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Synthesis of poly-α/β-peptides with tunable sequence via the copolymerization on N-carboxyanhydride and N-thiocarboxyanhydride

iScience, 2021
Summary: The fascinating functions of proteins and peptides in biological systems have attracted intense interest to explore their mimics using polymers, including polypeptides synthesized from polymerization.
Min Zhou, Jingcheng Zou, Longqiang Liu, Ximian Xiao, Shuai Deng, Yueming Wu, Jiayang Xie, Zihao Cong, Zhemin Ji, Runhui Liu   +9 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Recent developments in one-pot stepwise synthesis (OPSS) of small molecules

iScience, 2022
Summary: One-pot synthesis is an active topic in organic chemistry due to its intrinsic advantages of simple operation, high mass efficiency, low cost, and less amount of waste disposal.
Xiaoming Ma, Wei Zhang
doaj   +1 more source