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Balanced Partnership between Donor and Acceptor Components in Nonfullerene Organic Solar Cells with >12% Efficiency

ADVANCED MATERIALS 2018年第16期30卷 1706363-1706363页

作者： Lin, Yuze Zhao, fuwen Prasad, Shyamal K. K. chen, Jing-De Cai, Wanzhu Zhang, Qianqian chen, Kai Wu, Yang Ma, Wei Gao, Feng Tang, Jian-Xin Wang, Chunru You, Wei Hodgkiss, Justin M. Zhan, Xiaowei Peking Univ Minist Educ Key Lab Polymer Chem & Phys Dept Mat Sci & EngnColl Engn Beijing 100871 Peoples R China Chinese Acad Sci Inst Chem Beijing 100190 Peoples R China Victoria Univ Wellington Sch Chem & Phys Sci MacDiarmid Inst Adv Mat & Nanotechnol Wellington 6010 New Zealand Soochow Univ Inst Funct Nano & Soft Mat FUNSOM Suzhou 215123 Peoples R China Linkoping Univ IFM Biomol & Organ Elect S-58183 Linkoping Sweden Univ North Carolina Chapel Hill Dept Chem Chapel Hill NC 27599 USA Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China

Relative to electron donors for bulk heterojunction organic solar cells (OSCs), electron acceptors that absorb strongly in the visible and even near-infrared region are less well developed, which hinders the further development of OSCs. Fullerenes as traditional electron acceptors have relatively weak visible absorption and limited electronic tunability, which constrains the optical and electronic properties required of the donor. Here, high-performance fullerene-free OSCs based on a combination of a medium-bandgap polymer donor (FTAZ) and a narrow-bandgap nonfullerene acceptor (IDIC), which exhibit complementary absorption, matched energy levels, and blend with pure phases on the exciton diffusion length scale, are reported. The single-junction OSCs based on the FTAZ:IDIC blend exhibit power conversion efficiencies up to 12.5% with a certified value of 12.14%. Transient absorption spectroscopy reveals that exciting either the donor or the acceptor component efficiently generates mobile charges, which do not suffer from recombination to triplet states. Balancing photocurrent generation between the donor and nonfullerene acceptor removes undesirable constraints on the donor imposed by fullerene derivatives, opening a new avenue toward even higher efficiency for OSCs.

关键词： fused ring electron acceptors nonfullerene solar cells organic solar cells photophysics

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Cytomegalovirus infection in a T-cell lymphoma patient-presenting with multiple gastrointestinal ulcers: a case report

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ENDOSCOPY INTERNATIONAL OPEN 2019年第4期7卷 E615-E620页

作者： Tao, Jin Lin, Xian Yi Fong, Christ-Jonathan Tsia Hin Zhuo fuwen chen, Jian Ning Liang, Qiong Lin, Qu Wu, Bin Sun Yat Sen Univ Dept Gastroenterol Affiliated Hosp 3 600 Tianhe Rd Guangzhou 510630 Guangdong Peoples R China Sun Yat Sen Univ Dept Pathol Affiliated Hosp 3 Guangzhou Guangdong Peoples R China Sun Yat Sen Univ Dept Oncol Affiliated Hosp 3 Guangzhou Guangdong Peoples R China

Background and study aims Gastrointestinal ulcers are responsible for a wide spectrum of diseases. Infection, drug-induced enteritis, malignancy, vasculitis and Inflammatory bowel disease are the most common causes;their clinical expression often varies according to the site and severity of intestinal involvement. We report on a 68-year-old male presenting with dyspepsia and melena and multiple gastrointestinal ulcers on endoscopy. We could not establish diagnosis of peripheral T-cell lymphoma not otherwise specified (PTCL-NOS) despite multiple biopsies taken on several endoscopic sessions, and cytomegalovirus (CMV) infection was documented by presence of inclusion bodies on pathology. The immunohistochemical study showed a mixture of B lymphocytes and predominantly T lymphocytes, negative for cluster of differentiation (CD)*** blot gene rearrangement was positive for T-cell receptor beta. Our patient eventually expired from a massive gastrointestinal hemorrhage following four cycles of chemotherapy. We wish to emphasize that a CMV infection, as a comorbidity, can potentially mask and delay diagnosis of PTCL-NOS, especially in cases with aberrant immunopheno-type presentation.

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Reviewing the Management of Obstructive Left Colon Cancer: Assessing the Feasibility of the One-stage Resection and Anastomosis After Intraoperative Colonic Irrigation

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CLINICAL COLORECTAL CANCER 2017年第2期16卷 E89-E103页

作者： Awotar, Gavish Kumar Guan, Guoxin Sun, Wei Yu, Hongliang Zhu, Ming Cui, Xinye Liu, Jie chen, Jiaxi Yang, Baoshun Lin, Jianyu Deng, Zeyong Luo, Jianwei Wang, chen Nur, Osman Abdifatah Dhiman, Pankaj Liu, Pixu Luo, fuwen Dalian Med Univ Dept Gen Surg Affiliated Hosp 2 Dalian 116023 Liaoning Provin Peoples R China Dalian Med Univ Dept Gen Surg Affiliated Hosp 3 Dalian Liaoning Provin Peoples R China Dalian Med Univ Inst Canc Stem Cell Dalian Peoples R China Dalian Med Univ Coll Pharm Dalian Peoples R China

Around 20% of patients with colorectal cancer present with acute colonic obstruction as the first sign of colon cancer. Traditionally, a multi-stage approach was favored but, given the large amount of non-reversal of stoma, the single-stage primary resection and anastomosis after colonic irrigation is becoming more popular. We concluded that it can be done after our analysis at our institution. Background: The management of obstructive left colon cancer (OLCC) remains debatable with the single-stage procedure of primary colonic anastomosis after cancer resection and on-table intracolonic lavage now being supported. Patients and Methods: Patients with acute OLCC who were admitted between January 2008 and January 2015 were distributed into 5 different groups. Group ICI underwent emergency laparotomy for primary anastomosis following colonic resection and intraoperative colonic lavage;Group HP underwent emergency Hartmann's Procedure;Group CON consisted of patients treated by conservative management with subsequent elective open cancer resection;Group COL were colostomy patients;and Group INT consisted of patients who had interventional radiology followed by open elective colon cancer resection. The demographics of the patients and comorbidity, intraoperative data, and postoperative data were collected, with P <.05 as significant. Results: There were 4 deaths in 138 cases (2.90%). There was only 1 patient who had anastomotic leakage (5.56%) in Group ICI, compared with none in Group HP and Group COL, 1 case in Group INT (7.69%), and 2 cases in Group CON (6.06%) (P >.05). Group INT and Group CON, when compared to the three surgical groups, Groups ICI, Group COL, and Group HP, individually, were statistically significant for the duration of surgery (P <.05). Conclusions: Primary anastomosis following colonic resection after irrigation can be safely performed in selected patients, with the necessary surgical expertise, with no increased risk in mortality, anastomotic leaka

关键词： Colonic lavage Hartmann's procedure Segmental colectomy Self-expanding metallic stenting Trans-anal drainage tube

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Platinum group elements in terrestrial oil shale from the Lunpola Basin, northern Tibet, China

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ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS 2016年第10期38卷 1461-1469页

作者： Fu, Xiugen Tan, fuwen Feng, Xinglei chen, Wenbin Song, Chunyan Zeng, Shengqiang Chengdu Inst Geol & Mineral Resources Chengdu 610081 Peoples R China Minist Land & Resources Key Lab Sedimentary Basin & Oil & Gas Resources Chengdu 610081 Peoples R China

The Lunpola oil shale is the largest oil shale resource in Tibet. Twenty-four samples were collected from this deposition to determine the platinum group element (PGE) characteristics. The total PGE contents in terrestrial oil shale are low (average 2.386 ng/g). The PGEs are enriched in the oil shale samples near the boundary between the oil shale and its underlying strata. The PGE enrichment may be the result of a change of oxic-anoxic conditions. The individual PGEs of oil shale samples from the Lunpola oil shale exhibit similar modes of occurrence, and their distributions are controlled mainly by Fe-bearing minerals (pyrite). The source of PGEs in the Lunpola oil shale is probably related to water chemistry and terrigenous supply.

关键词： Mode of occurrence platinum group elements source terrestrial oil shale

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风险管理在预防急诊老年患者医疗纠纷和投诉中的应用分析

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老年医学与保健 2018年第3期24卷 322-324页

作者：陈豪王富文崔红波汤剑斌上海市浦东新区光明中医医院医务部上海201399 上海市浦东新区光明中医医院院长办公室上海201399

目的探讨风险管理在预防急诊老年患者医疗纠纷和投诉中的应用及其对不良事件的评估。方法选择2015年1月—2016年12月在我院急诊科就诊的老年患者200例,根据是否进行风险管理分为2组:观察组(n=100)和对照组(=100)。对照组给予常规的急诊... 详细信息

目的探讨风险管理在预防急诊老年患者医疗纠纷和投诉中的应用及其对不良事件的评估。方法选择2015年1月—2016年12月在我院急诊科就诊的老年患者200例,根据是否进行风险管理分为2组:观察组(n=100)和对照组(=100)。对照组给予常规的急诊管理,观察组在对照组相同的常规急诊管理的基础上进行风险管理。分析并比较2组医疗纠纷和投诉以及不良事件等情况。结果观察组中基础管理水平、医疗操作文书记录和消毒隔离以及管理技术操作的各项评分均明显的高于对照组,2组间数据比较差异有统计学意义(P<0.05);观察组医疗纠纷发生率、投诉发生率、不良事件发生率均明显的低于对照组,2组间数据差异有统计学意义(P<0.05)。结论急诊老年患者的医疗管理中实施风险管理效果明显,可以有效预防医疗纠纷和投诉的发生。同时,急诊风险管理的实施推进还可降低医疗不良事件的发生,值得临床中应用推广。

关键词：老年急诊风险管理医疗纠纷投诉不良事件

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椰心叶甲取食的寄主选择

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安徽农业科学 2018年第1期46卷 141-142页

作者：陈智明过赋文邓真张二娜李敏福州出入境检验检疫局福建福州350015 福建出入境检验检疫局武夷山办事处福建武夷山354300 济源市农业技术推广中心河南济源459000 福建出入境检验检疫局检验检疫技术中心福建福州350001

[目的]探讨椰心叶甲对寄主植物的适应性及寄主植物对椰心叶甲种群暴发的影响。[方法]利用自制装置研究椰心叶甲对椰子、加拿利海枣、美丽针葵和老人葵4种寄主植物的取食选择。[结果]椰心叶甲对不同寄主的取食选择差异显著,在椰子上的着... 详细信息

[目的]探讨椰心叶甲对寄主植物的适应性及寄主植物对椰心叶甲种群暴发的影响。[方法]利用自制装置研究椰心叶甲对椰子、加拿利海枣、美丽针葵和老人葵4种寄主植物的取食选择。[结果]椰心叶甲对不同寄主的取食选择差异显著,在椰子上的着虫数最多,与老人葵显著差异,加拿利海枣和美丽针葵着虫极少,二者无明显差异。取食量规律与着虫数呈正相关。[结论]研究结果为椰心叶甲的综合防治提供了理论依据。

关键词：椰心叶曱取食寄主选择

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粘贴钢板加固木梁持荷1200d受力性能试验研究

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建筑结构学报 2017年第6期38卷 78-85页

作者：张富文陈溪许清风王卓琳陈玲珠贡春成上海市建筑科学研究院(集团)有限公司上海市工程结构安全重点实验室上海200032

试验中设计了2根足尺木梁,包括1根未加固对比木梁和1根粘贴钢板加固木梁,进行了1200 d的长期持荷试验。试验结果表明:加固木梁与对比木梁均有明显的初始蠕变阶段和稳态蠕变阶段,但加固木梁的跨中挠度和跨中曲率增量明显小于对比木梁,说... 详细信息

试验中设计了2根足尺木梁,包括1根未加固对比木梁和1根粘贴钢板加固木梁,进行了1200 d的长期持荷试验。试验结果表明:加固木梁与对比木梁均有明显的初始蠕变阶段和稳态蠕变阶段,但加固木梁的跨中挠度和跨中曲率增量明显小于对比木梁,说明加固钢板对木材蠕变具有约束作用;木材应变总体上随温度和湿度的升高而增加、随温度和湿度的降低而减小。采用老化理论、Burgers模型和五参数模型对对比木梁的跨中挠度-持荷时间曲线进行了参数拟合和预测,验证了五参数模型可满足初始与稳态蠕变阶段的计算精度,能够较好地进行木梁蠕变的预测。采用ANSYS中的蠕变方程,并基于所提出的蠕变参数分时段线性化的方法对粘贴钢板加固木梁的长期挠度进行了模拟,计算结果具有较好的精度。

关键词：木梁钢板加固长期荷载试验长期性能蠕变

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New insights about petroleum geology and exploration of Qiangtang Basin, northern Tibet, China: A model for low-degree exploration

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MARINE AND PETROLEUM GEOLOGY 2016年 77卷 323-340页

作者： Fu, Xiugen Wang, Jian Tan, fuwen chen, Ming Li, Zhongxiong Zeng, Yuhong Feng, Xinglei Chengdu Inst Geol & Mineral Resources Chengdu 610081 Peoples R China Minist Land & Resources Key Lab Sedimentary Basin & Oil & Gas Resources Chengdu 610081 Peoples R China

The Qiangtang Basin is the biggest petroleum-bearing basin in the Qinghai-Tibet Plateau. This basin experienced a foreland basin evolution during the Early- Middle Triassic and a rift basin evolution during the Late Triassic-Early Cretaceous. Triassic and Jurassic hydrocarbon source rocks were widely distributed throughout the basin. The Triassic Tumen Gela Formation coal-bearing mudstones represent the best source rocks because of high total organic carbon (TOC) content (1.25-3.45%) and HI values (2.8-123 mg/g Toc), and the Xiali Formation mudstones are moderately-good source rocks with an average TOC content ranging from 0.55 to 7.30% and HI values ranging from 7.0 to 165 mg/g Toc. The Jurassic Buqu Formation and Suowa Formation carbonates, however, exhibit poor-to fair-quality as hydrocarbon source rocks. Excellent dolomite and paleokarst reservoirs and mudstones and bearing-evaporite marl cap rocks, together with well-developed structural traps are recognized in the basin. Additionally, a large paleo-oil-reservoir zone has also been discovered. Based on an integrated petroleum systems analysis, nine favorable hydrocarbon exploration areas are proposed, of which the Tuonamu area and Badaohu area are selected as the potential targets for the exploration for oil and gas resources in the basin. Good reservoir quality dolomites in the Buqu Formation are considered to have a significant exploration potential. (C) 2016 Elsevier Ltd. All rights reserved.

关键词： Petroleum geology Sedimentary characteristics Favorable exploration area Exploration potential Qiangtang Basin

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纤维增强水泥基复合材料加固震损RC框架抗震性能试验研究

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建筑结构学报 2017年第6期38卷 61-69页

作者：张富文李向民王卓琳陈溪许清风上海市建筑科学研究院(集团)有限公司上海市工程结构安全重点实验室上海200032

针对震损钢筋混凝土框架,提出了基于纤维增强水泥基复合材料(ECC)的加固修复方法,并开展了振动测试和低周反复荷载试验。研究结果表明:震损加固框架在加载试验后的基本频率仅下降了6.8%,损伤程度较轻,屈服和峰值荷载时的顶点位移角分别... 详细信息

针对震损钢筋混凝土框架,提出了基于纤维增强水泥基复合材料(ECC)的加固修复方法,并开展了振动测试和低周反复荷载试验。研究结果表明:震损加固框架在加载试验后的基本频率仅下降了6.8%,损伤程度较轻,屈服和峰值荷载时的顶点位移角分别为1/48和1/25,破坏时位移角超过1/19。震损加固框架的峰值荷载较未损伤原框架提高了9.6%,表明ECC加固修复震损框架的方法能够使其抗震承载能力完全恢复并略高于原框架;ECC加固震损框架的耗能能力也可恢复至原框架的水平。此外,ECC加固对震损框架的刚度提高有限,震损加固框架的初始刚度仅为原框架的36.0%,但刚度退化较为缓慢。应变分析结果表明,ECC置换梁端混凝土能够显著改善塑性铰区的受力性能和破坏模式。

关键词：钢筋混凝土框架纤维增强水泥基复合材料震损加固低周反复加载试验抗震性能

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中国腹部手术后手术部位感染的多中心横断面研究

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中华胃肠外科杂志 2020年第11期23卷 1036-1042页

作者：张旭飞陈军王培戈罗苏明刘纳新李学民何显力王毅毕小刚张平汪泳吕忠船周波麦威武华胡阳王道荣罗福文夏利刚赖家骏张东明王黔韩刚吴秀文任建安东部战区总医院全军普通外科研究所南京医科大学附属金陵临床医学院 210002 青岛大学附属医院急诊科 266000 新疆维吾尔自治区人民医院综合外科乌鲁木齐830001 浙江温州医科大学附属第一医院胰腺炎诊治中心 325000 郑州大学附属郑州中心医院普通外科 450007 空军军医大学第二附属医院普通外科西安710038 三峡大学第一临床医学院(湖北省宜昌市中心人民医院)胃肠外科 443003 山西省人民医院胃肠胰外普通外科太原030012 吉林大学第一医院肝胆外科长春130021 安徽医科大学第二附属医院普通外科合肥230601 山东烟台毓璜顶医院普通外科 264000 安徽医科大学第一附属医院普通外科合肥230022 广西壮族自治区人民医院胃肠外科南宁530021 山西医科大学第一医院普通外科太原030001 四川省人民医院胃肠外科成都610072 苏北人民医院普通外科江苏扬州225001 大连医科大学附属二院急腹症外科 116027 深圳市人民医院胃肠外科 518020 粤北人民医院胃肠外科广东韶关512026 内蒙古自治区包头市中心医院普通外科 014040 贵州医科大学附属医院胃肠外科贵阳550004 吉林大学第二医院胃肠营养及疝外科长春130041

目的手术部位感染(SSI)的发生可显著延长术后住院时间,加重患者及社会经济负担,甚至危及患者的生命安全。本研究旨在调查全国范围内腹部手术后SSI的发生率,分析其风险因素,为腹部手术后SSI的防控提供参考依据。方法采用多中心横断面研... 详细信息

目的手术部位感染(SSI)的发生可显著延长术后住院时间,加重患者及社会经济负担,甚至危及患者的生命安全。本研究旨在调查全国范围内腹部手术后SSI的发生率,分析其风险因素,为腹部手术后SSI的防控提供参考依据。方法采用多中心横断面研究方法,收集全国68家医院2020年6月1—30日期间所有接受腹部手术的成年患者的临床资料,包括患者的一般资料、围手术期的相关临床数据以及感染切口微生物培养结果。主要结局指标为腹部手术后30 d内SSI发生率,次要结局变量为重症监护室(ICU)住院时间、术后住院时间、住院费用以及术后30 d病死率。采用多因素Logistic回归模型分析SSI发生的危险因素。结果共纳入5560例腹部手术患者,术后有163例(2.9%)发生SSI,其中器官(腔隙)感染98例(60.1%)、深部切口感染19例(11.7%)、浅部切口感染46例(28.2%)。切口微生物培养结果显示,大肠埃希菌为SSI的主要病原菌(22.7%,37/163)。多因素分析显示,高血压病史(OR=1.792,95%CI:1.194~2.687,P=0.005)、手术部位为小肠(OR=6.911,95%CI:1.846~25.878,P=0.004)、手术时间延长(OR=1.002,95%CI:1.001~1.003,P<0.001)、手术切口等级(污染切口:OR=3.212,95%CI:1.495~6.903,P=0.003;感染切口:OR=11.562,95%CI:3.777~35.391,P<0.001)为SSI发生的危险因素,而行腹腔镜或机器人手术(OR=0.564,95%CI:0.376~0.846,P=0.006)以及术前白蛋白水平每升高1 g/L(OR=0.920,95%CI:0.888~0.952,P<0.001)为SSI发生的保护因素。与非SSI患者相比,SSI患者术后ICU入住率[26.4%(43/163)比9.5%(514/5397),χ2=54.999]和术后30 d病死率[1.84%(3/163)比0.01%(5/5397),χ2=33.642]更高,ICU住院时间(中位数:0比0,U=518414)、术后住院时间(中位数:17 d比7 d,U=656386)和总住院时间(中位数:25 d比12 d,U=648129)均显著延长,住院费用亦明显增加(中位数:7.1万元比3.9万元,U=557966),差异均有统计学意义(均P<0.001)。结论腹部手术后SSI发生率为2.9%。为降低术后SSI的发生,术前应纠正低蛋白血症,选择微创手术,尽量缩短手术时间;在围手术期内对高血压、小肠手术以及切口污染较严重的患者,予以关注并加强护理。

关键词：腹部手术手术部位感染横断面研究危险因素

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