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Iron-Catalysed C(sp^(2))-H Borylation with Expanded Functional Group Tolerance

Chinese Journal of Chemistry 2022年第24期40卷 2875-2881页

作者： luke Britton Jamie H.Docherty Gary s.nichol Andrew P.Dominey stephen P.Thomas EastCHEM school of Chemistry University of EdinburghEdinburghEH93FJ United Kingdom GsK Medicines research Centre StevenageSG12NY United Kingdom

Arene C(sp^(2))-H bond borylation offers direct and efficient access to aryl boronic *** in situ catalyst activation and photoirradiation,the iron-catalysed C(sp^(2))-H borylation reaction of carboarenes,pyrroles,and indoles has been developed using only bench-stable pre-catalysts and *** functional group tolerance was observed including those not reported using previous methods(ArNH_(2),ArOH,Arsir_(3),ArP(O)(O)_(2),ArC(O)Nr_(2)).Mechanistic studies revealed iron-catalysed reductive deoxygenation,C—F protodefluorination,and a demethylation of aryl methyl ethers by C—O sigma bond hydroboration.

关键词： Iron Earth-abundant C-H borylation Boron Photochemistry

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The study of biological activity of transformation products of diclofenac and its interaction with chlorogenic acid

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Journal of Environmental sciences 2020年第5期32卷 128-141页

作者： Marzena Matejczyk Piotr Ofman Katarzyna Dabrowska renata swislocka Wlodzimierz lewandowski Bialystok University of Technology Faculty of Civil Engineering and Environmental SciencesDepartment of ChemistryBiology and Biotechnology15-341BialystokPoland Bialystok University of Technology Department of Environmental Engineering TechnologyBialystok15-341Poland Waclaw Dabrowski Institute of Agricultural and Food Biotechnology Department of Microbiology02-532WarsawPoland

In the present work we compared the biological activity of DCF,4’-OHDCF and 5-OHDCF as molecules of most biodegradation pathways of DCF and selected transformation products(2-hydroxyphenylacetic acid;2,5-dihydroxyphenylacetic acid and 2,6-dichloroaniline)which are produced during AOPs,such as ozonation and UV/H2 *** also examined the interaction of DCF with chlorogenic acid(CGA).CGA is commonly used in human diet and entering the environment along with waste mainly from the processing and brewing of coffee and it can be toxic for microorganisms included in activated *** the present experiment the evaluation of following parameters was performed:*** K-12 cells viability,growth inhibition of *** K-12 culture,lC50 and mortality of Chironomus aprilinus,ge no toxicity,sodA promoter induction and rOs *** addition the reactivity of *** sM recA:luxCDABE biosensor strain in wastewater matrices was *** results showed the influence of DCF,4’-OHDCF and 5-OHDCF on *** K-12 cells viability and bacteria growth,comparable to AOPs *** highest toxicity was observed for selected,tested AOPs by-products,in comparison to the DCF,4’-OHDCF and *** assay indicated that 2,6-dichloroaniline(AOPs by-product)had the highest toxic *** oxidative stress assays revealed that the highest level of rOs generation and sodA promoter induction were obtained for DCF,4’-OHDCF and 5-OHDCF,compared to other tested *** have also found that there is an interaction between chlorogenic acid and DCF,which resulted in increased toxicity of the mixture of the both compounds to *** K-12,comparable to parent *** strongest response of *** sM biosensor strain with recA:luxCDABE genetic construct in filtered treated wastewaters,comparable to control sample was *** indicates,that *** sM recA:luxCDABE biosensor strains is a good tool for bacteria monitoring in wastewater *** to toxicity and biological

关键词： Diclofenac Biodegradation Chlorogenic acid Advances oxidation processes (AOPs) Wastewaters Microbial biosensors

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一类带限的插值小波(英文)

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数学进展 1997年第6期26卷 523-528页

作者：刘有明 G.G.Walter 北京工业大学应用数学系威斯康星大学数学系

Ｓｈａｎｎｏｎ尺度函数具有带限性质、正交性质、取样性质，但它不在Ｌ（Ｒ）中．本文引入一类新的小波，它的尺度函数不仅具有上述性质而且在Ｌ（Ｒ）中，甚至更多．

关键词：小波尺度函数带限多尺度分析插值小波

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Genetic down-regulation of gibberellin results in semi-dwarf poplar but few non-target effects on chemical resistance and tolerance to defoliation

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Journal of Plant Ecology 2019年第1期12卷 124-136页

作者： Christine Buhl steven H.strauss richard l.lindroth Department of Entomology University of Wisconsin-Madison1630 Linden DriveMadisonWI 53706USA Department of Forest Ecosystems and society Oregon State University321 Richardson HallCorvallisOR 97331USA Present address:2600 state street SalemOR 97310USA

Aims Plant stature can be strongly modified via regulation of endog-enous levels and signalling of the plant hormone gibberellin(GA).Down-regulation of GA can produce semi-dwarf tree varieties with improved qualities such as reduced susceptibility to wind damage,enhanced root growth and more compact ***,these modifications may have unintended,non-target consequences for defence against herbivores,via either of two mechanisms:(i)reduced biomass production may cause trade-offs with chemical resistance traits,as predicted by the growth-differentiation balance hypothesis,and(ii)altered biomass allocation to either roots or pho-tosynthetic tissues may affect regrowth potential and thus tolerance to *** We studied GA down-regulated(GE)and non-transgenic wild-type hybrid poplar(Populus alba×***)in an outdoor,above-ground common garden and defoliated half of all replicate trees to simulate *** then quantified the independent and inter-active effects of genotype and defoliation on growth and chemical resistance-related traits,including phenolic glycosides(PGs),con-densed tannin and *** also calculated tolerance to defo-liation as the differential in relative growth between undefoliated and defoliated *** Findings Our results indicate that two of the four GA down-regulated geno-types had significantly reduced stem height,basal diameter,vol-ume(d2h),total biomass and increased allocation to leaves relative to the wild *** of those two genotypes also had reduced allocation to *** and sometimes both of these same two genotypes also had at least 20%lower levels of condensed tannins and PGs and similar increases in lignin and ***,as calculated by the differential in relative growth between unde-foliated and defoliated trees,was similar among all experimental ***,two GE genotypes flushed fewer leaves in response to defoliation relative to the wild *** results indi-cate

关键词： genetic modification gibberellic acid Populus pest susceptibility tolerance resistance

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应激状态下急性酒精中毒大鼠胃黏膜损伤模型的建立

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护理研究（上旬版） 2006年第9期20卷 2272-2274页

作者：马鸿雁孙晓红吕萍吉林大学第一医院

[目的]建立应激状态下急性酒精中毒胃黏膜损伤的动物模型。[方法]采用析因实验设计,将96只wis-tar大鼠分为应激组(A组)、酒精中毒组(B组)、应激后酒精中毒组(C组)、空白对照组(D组)。A组和C组大鼠倒立8h,之后给B组和C组大鼠灌入56度白酒... 详细信息

[目的]建立应激状态下急性酒精中毒胃黏膜损伤的动物模型。[方法]采用析因实验设计,将96只wis-tar大鼠分为应激组(A组)、酒精中毒组(B组)、应激后酒精中毒组(C组)、空白对照组(D组)。A组和C组大鼠倒立8h,之后给B组和C组大鼠灌入56度白酒,直到大鼠出现酒精中毒症状为止。A组、D组大鼠灌入等量生理盐水。分别于酒精中毒后2h、24h、48h处死8只大鼠,观察胃黏膜的病理变化,并进行胃黏膜损伤评分。[结果]B组与A组、C组胃黏膜损伤评分差异均有统计学意义(P<0.05);且不同时间点胃黏膜损伤评分差异亦有统计学意义(P<0.05);不同处理方法和时间因素有交互作用。[结论]倒立8h后酗酒法能成功地建立应激状态下急性酒精中毒大鼠胃黏膜损伤的模型,并出现胃黏膜损伤的征象。

关键词：动物模型大鼠应激急性酒精中毒胃黏膜损伤

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