检索结果-南通市图书馆

Towards electrochemical hydrogen storage in liquid organic hydrogen carriers via proton-coupled electron transfers

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第10期31卷 292-300,I0007页

作者： Hamid Ghorbani Shiraz Mikhail Vagin Tero-Petri Ruoko Viktor Gueskine Krzysztof karon Mieczystaw tapkowski Tobias Abrahamsson Thomas Ederth Magnus Berggren Xavier Crispin Laboratory of Organic Electronics Department of Science and Technology(ITN)Linkoping UniversitySE-60174 NorrkopingSweden Smart Photonic Materials Facuty of Engineering and Natural SciencesTampere UniversiyPBox 541.Tampere Fl-33101Finland Silesian University of Technology.Faculty of Chemistry Deparment of Physical Chemistry and Technology of PolymersM.Strzody 9.44-100 GliwicePoland dDepartment of Physics Chemistry and Biology(IFM)Linkoping UniversiySE-58183 LinkopingSweden

Green hydrogen is identified as one of the prime clean energy carriers due to its high energy density and a zero emission of CO_(2).A possible solution for the transport of H_(2)in a safe and low-cost way is in the form of liquid organic hydrogen carriers(LOHCs).As an alternative to loading LOHC with H_(2)via a two-step procedure involving preliminary electrolytic production of H_(2)and subsequent chemical hydrogenation of the LOHC,we explore here the possibility of electrochemical hydrogen storage(EHS)via conversion of proton of a proton donor into a hydrogen atom involved in covalent bonds with the LOHC(R)via a protoncoupled electron transfer(PCET)reaction:2nH^(+)+2ne^(-)+Rox■n H_(2)^(0)*** chose 9-fluorenone/fluorenol(Fnone/Fnol)conversion as such a model PCET *** electrochemical activation of Fnone via two sequential electron transfers was monitored with in-situ and operando spectroscopies in absence and in presence of different alcohols as proton donors of different reactivity,which enabled us to both quantify and get the mechanistic insight on *** possibility of hydrogen extraction from the loaded carrier molecule was illustrated by chemical activation.

关键词： Proton-coupled electron transfer Electrochemical hydrogen storage Hydrogen bonding agent Anion-radical Comproportionation

在线全文

学校读者我要写书评

暂无评论

世界杯之华尔街赛果预测

海外英语 2010年第8期 5-8页

作者： Tony karon 俞晨杰（译）

也许考虑到作为世界一流的投资银行为本届足球世界杯做前瞻，是为自己的品牌树立良好形象的大好时机：高盛、摩根大通和瑞银等均对世界杯结果进行了预测。然而，这些银行如果为投资者提供投资理财的建议，可能更为在行：过去的一切并不... 详细信息

也许考虑到作为世界一流的投资银行为本届足球世界杯做前瞻，是为自己的品牌树立良好形象的大好时机：高盛、摩根大通和瑞银等均对世界杯结果进行了预测。然而，这些银行如果为投资者提供投资理财的建议，可能更为在行：过去的一切并不能代表将来。

关键词：足球世界杯预测华尔街投资理财良好形象摩根大通投资者银行

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

在北京的那七年

国际人才交流 2010年第2期 59-61页

作者： Mark David karon 闵晓霜

7年前我来到中国，不知道未来会怎样。在美国，我有一辆很棒的带有真皮座椅的欧洲汽车，还租了一个带有两个浴室和一大片草地的别墅。在太平洋上空的飞机上，我遇到其他一些美国人，他们和我一样也是去教二外英语的。他们谈到很好的生... 详细信息

7年前我来到中国，不知道未来会怎样。在美国，我有一辆很棒的带有真皮座椅的欧洲汽车，还租了一个带有两个浴室和一大片草地的别墅。在太平洋上空的飞机上，我遇到其他一些美国人，他们和我一样也是去教二外英语的。他们谈到很好的生活安排和积极好学的学生。2002年8月的一个晚上，

关键词：北京欧洲汽车美国人太平洋

在线全文

学校读者我要写书评

暂无评论

剖析潮流

海外英语 2003年第6期 11-页

作者： TONY karon

　　Time was, a fashion-conscious body would dare don(穿上 )a sweat suit only while curled up in first class. No *** are in for the fashion cognoscenti(行家, 鉴赏家),from smart, casual moms to partying celebrities. And for boldface(黑体字) types, they're not just to own. There's hardly a hip-hop star without an eponymous(齐名的) line of hoodies( 头巾, 风帽) and pants. So who's responsible for breathing new life into the long-reviled(斥责 ) ensemble? The answer depends on how far back you want to go.……

关键词：剖析鉴赏家黑体字头巾风帽

TDx-FLMⅡ和卵磷脂鞘磷脂比预测胎儿肺成熟的比较

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（妇产科学分册） 2006年第1期2卷 5-5页

作者： Winn-Mcmillan T. karon B. S. 张旸(译) 马超(校) Dr. B.S. karon Mayo Clinic Department of Laboratory Medicine and Pathology 200 First Street SW Rochester MN 55905 United States 不详

We evaluated the usefulness of the TDx- FLM II and lecithin to sphingomyelin (L/S) ratio assays in predicting fetal lung maturity. Study design: We retrospectively reviewed 218 consecutive paired TDx- FLM II and L/S ratio results. Women who delivered viable infants within 72 hours of amniotic fluid collection (n = 109) were included in the analysis of sensitivity and specificity. Concordance between tests was determined for all women tested during the study period, and in the subset of women who delivered viable infants within 72 hours of amniotic fluid collection. Results: There were 9 respiratory distress syndrome (RDS)- affected infants born during the study period. Both the TDx- FLM II and L/S ratios had 100% sensitivity in detecting RDS at their best apparent cut-offs. There was a trend towards increased specificity of the L/S ratio compared with the TDx- FLM II (80% for L/S vs 73% for FLM II). The overall concordance between the TDx- FLM II and L/S ratio was approximately 75% . Conclusion: The TDx- FLM II and L/S ratios are both sensitive tests for RDS; however, there is not good concordance between the two. The results provide new insight into the optimal use, in sequential or reflex cascade testing, of the TDx- FLM II and L/S ratio.

关键词： TDx 肺成熟鞘磷脂卵磷脂胎儿预测一致性检验呼吸窘迫综合征灵敏度回顾分析