检索结果-南通市图书馆

In situ Iodide Passivation Toward Efficient CsPbI_(3) Perovskite Quantum Dot solar Cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第10期15卷 28-39页

作者： Junwei shi Ben cohen‑Kleinstein Xuliang Zhang Chenyu Zhao Yong Zhang Xufeng Ling Junjun Guo Doo‑Hyun Ko Baomin Xu Jianyu Yuan Wanli Ma Department of Materials science and Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Institute of Functional Nano&soft Materials(FUNsOM) Soochow University199 Ren‑Ai RoadSuzhou Industrial ParkSuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of British Columbia2329 West MallVancouverBC V6T 1Z4Canada Department of Chemistry Sungkyunkwan UniversitySuwon 16419Republic of Korea Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University199 Ren‑Ai RoadSuzhou Industrial ParkSuzhou 215123People’s Republic of China Jiangsu Key Laboratory for Carbon‑Based Functional Materials&Devices Soochow University199 Ren‑Ai RoadSuzhou Industrial ParkSuzhou 215123People’s Republic of China

All-inorganic CsPbI_3 quantum dots(QDs) have demonstrated promising potential in photovoltaic(PV) applications. However, these colloidal perovskites are vulnerable to the deterioration of surface trap states, leading to a degradation in efficiency and stability. To address these issues, a facile yet effective strategy of introducing hydroiodic acid(HI) into the synthesis procedure is established to achieve high-quality QDs and devices. Through an in-depth experimental analysis, the introduction of HI was found to convert PbI_2 into highly coordinated [PbI_m]~(2-m), enabling control of the nucleation numbers and growth kinetics. Combined optical and structural investigations illustrate that such a synthesis technique is beneficial for achieving enhanced crystallinity and a reduced density of crystallographic defects. Finally, the effect of HI is further reflected on the PV performance. The optimal device demonstrated a significantly improved power conversion efficiency of 15.72% along with enhanced storage stability. This technique illuminates a novel and simple methodology to regulate the formed species during synthesis, shedding light on ofurther understanding solar cell performance, and aiding the design of future novel synthesis protocols for high-performance optoelectronic devices.

关键词： CsPbI_(3)perovskite quantum dots In situ passivation surface trap states Perovskite solar cell

Coverage rates for diphtheria,tetanus,poliomyelitis,and pertussis age-specific booster recommendations in France:2018 update of the real-world cohort analysis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Infectious Medicine 2023年第1期2卷 51-56页

作者： Régis Verdier Clarisse Marchal Manon Belhassen Marie Le Pannerer Nicole Guiso Robert cohen sanofi LyonFrance PELyon(Pharmaco Epidemiology Lyon) LyonFrance Independent Expert ParisFrance UniversitéParis Est IMRB-GRC GEMINICréteilFrance Clinical Research Center(CRC) Centre Hospitalier Intercommunal de CréteilCréteilFrance GPIP Pediatric Infectious Disease GroupFrance ACTIV Pediatric Clinical and Therapeutical Association of the Val de MarneSaint-Maur des FossésFrance UnitéCourt séjour Petits NourrissonsService de NéonatologieCentre Hospitalier Intercommunal de CréteilCréteilFrance

The French National Immunization Program was updated in 2013 for vaccination against diphtheria,tetanus,per-tussis,and *** previous findings on the evolution of age-specific booster vaccination coverage rates(VCRs)up to 2017 suggested suboptimal vaccination coverages due to the pre-2013 recommendation-residual vaccination *** the current analysis,we evaluated all age-specific booster VCR and distribution of age at vaccination visits in *** this retrospective observational cohort study,the cumulative booster VCRs were updated at all vaccination visits up to 2018 among the people who were eligible for a booster vaccination,using a 1/97th random sample of French national healthcare reimbursement *** cumulative booster VCR for individuals from all age groups increased from 2017 to 2018,except for 85-years-old vaccination *** of the individuals from all age groups were vaccinated(boosted)with a vaccine containing the pertussis *** 2018,sharp peaks corresponding to the recommended ages for booster vaccination visits were observed for individuals aged 6,11 to 13,25,45,and 65 *** study reiterates suboptimal coverages in France and implies the need for booster vaccination throughout life for the protection of the population.

关键词： Booster vaccine DTaP-IPV France Pertussis National Immunisation Programme Vaccination coverage rate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

网室栽培香蕉耗水特征及合理灌溉水量确定

灌溉排水学报 2008年第5期27卷 37-40页

作者：刘海军黄冠华 J Tanny s.cohen 北京师范大学水科学研究院水沙科学教育部重点实验室北京100875 中国农业大学水利与土木工程学院北京100083 Institute of soil Water and Environmental SciencesAgricultural Research Organization The Volcani Center Bet Dagan 50250 Israel

主要研究网室和不同灌溉水量下香蕉的耗水特征，确定香蕉的作物系数。处理包括大田充分灌溉处理（100％），网室充分灌溉处理（100％）和亏水处理（5s％），香蕉的耗水量（ET）用热消散茎液流法测定。试验结果显示，在3种处理间香蕉叶... 详细信息

主要研究网室和不同灌溉水量下香蕉的耗水特征，确定香蕉的作物系数。处理包括大田充分灌溉处理（100％），网室充分灌溉处理（100％）和亏水处理（5s％），香蕉的耗水量（ET）用热消散茎液流法测定。试验结果显示，在3种处理间香蕉叶面积差异不显著（P〉0．05），网室内香蕉的耗水量比大田降低了44％～55％；网室内2种灌溉水量条件下香蕉蒸散量差异不显著（P〉0．05），说明55％处理灌溉水量已经能够满足香蕉的生长，这个结果也和网室内蒸散量降低值一致。建议当地进行网室内香蕉栽培时，灌溉水量选取大田的一半即可。

关键词：网室香蕉蒸散量茎液流法

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

美国第一家太阳能广播电台

国际广播电视技术 1989年第2期3卷 61-63,10页

作者： cohen,s 袁丽

Charity's Real-Life Action Heroes show Different side of Gaming

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

当代外语研究 2006年第1期 2-3页

作者： Nancy cohen 葛群燕

网络游戏对青少年的毒害一直是令家长们头疼的问题;社会上对网络游戏的评价也是负面居多。然而,在美国西雅图,一个由网络游戏玩家组成的名为“Child’s Play”的网上慈善活动号召游戏玩家们捐赠钱、游戏、甚至是玩具给西雅图乃至全美国... 详细信息

网络游戏对青少年的毒害一直是令家长们头疼的问题;社会上对网络游戏的评价也是负面居多。然而,在美国西雅图,一个由网络游戏玩家组成的名为“Child’s Play”的网上慈善活动号召游戏玩家们捐赠钱、游戏、甚至是玩具给西雅图乃至全美国的儿童医院。该活动已经取得了不错的效果,声势也日趋浩大。这或许可以改变众人对网络游戏的一贯看法。

关键词：网络游戏游戏玩家西雅图青少年美国儿童医院家长活动评价头疼

Is It Profitable to Invest According to the VIX Fear Index？

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Accounting and Auditing 2011年第1期7卷 86-90页

作者： Mahmod Qadan Gil cohen Western Galilee College Israel The Max stern Academic College of Emek Yezreel Israel

This study demonstrates how the volatility index （VIX） can help predict the returns for sequential trading days. Using a logit function and previous VIX information, we present an initial attempt to estimate the probability of a positive market return. The estimation procedure is applied to recent data on the s＆P500 and to the 10-year U.s. Treasury Bonds yields. Our findings indicate that such a relationship does exist and is significant, especially for the bond market. We also ran an investment simulation using different VIX scores and found that from 2004 to June 2009, VIX=18 was the score that yielded the highest.

关键词： VIX volatility logit-function probability

Ekphrasis in Houellebecq＇s The Map and the Territory as Mise-en-Abyme and as Metafiction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Literature and Art studies 2015年第11期5卷 1020-1029页

作者： Nurit Buchweitz Cynthia Biron cohen Beit Berl College Herzliya Israel Open University of Israel Raanana Israel

In Michel Houellebecq＇s novel The Map and the Territory （2010）, the references to visual art, painting, and photography take a central place in the narrative. In addition to the verbal representation of artworks, there is an entire system of commentary, interpretation, and criticism of art. The references to visual art appear explicitly as ekphrases which splice the narrative time and again. The unique nature of ekphrasis in The Map and the Territory lies in its representation of art devoid of an origin in the real wodd; for the paintings in The Map and the Territory do not exist in reality but are pure literary paintings, in the full meaning of the word, as the artworks mentioned in the story have an existence restricted to Houellebecq＇s novel. The article analyses the ekphrases in The Map and the Territory and argues that they are a virtual visuality mediated by words, employing solely the technique of ekphrasis as an enhancer of meanings in a text and thereby foregrounding its artifice. It further argues that the ekphrases are open to a field of interpretive possibilities by contemporary society, as every ekphrasis features within it subversion and a contemplation on contemporary reality

关键词： Michel Houellebecq The Map and the Territory ekphrasis Mise-en-abyme metafiction

Memmler's the human body in health and disease 12th edition.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Blood spilled over World of Warcraft

2013年

作者： Barbara Janson cohen

ISBN: (纸本)1609139070

This widely read classic is an excellent primer on normal and abnormal anatomy, physiology and pathophysiology, basic microbiology, chemistry, and the human disease process. With an accessible design and a robust multimedia electronic ancillary package, the Twelfth Edition is even more engaging and understandable for students with diverse learning styles. It builds on its solid foundation by seamlessly integrating the placement and relationship of the art and text. A new full-body transparency insert has been added to the text to assist students in performing a virtual dissection of the human body from skin down to bone. The new editions' PAssport to success retains all the visual, auditory, and kinesthetic activities introduced with the last edition, plus additional animations and activities. The interface has been enhanced to improve the student experience, while the connection with the text has been strengthened with a list of ancillaries by learning style on each chapter opener.

关键词： Physiology Anatomy Pathology

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

China International Business 2009年第8期 34-35页

作者： KIT GILLET sEBAsTIAN cohen

It＇s I am in Beijing. While the streets are typically empty at this hour, there is usually a buzz in the internet bars as young students play the online gaming phenomenon World of Warcraft （WOW）. But not today - or... 详细信息

关键词：世界网络游戏青年学生