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Dimethylamine oxalate manipulating CsPbI_(3) perovskite film crystallization process for high efficiency carbon electrode based perovskite solar cells

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Journal of Energy Chemistry 2024年第6期93卷 221-228,I0006页

作者： Wenran Wang xin Peng Jianxin Zhang Jiage Lin Rong Huang Guizhi Zhang Huishi Guo Zhenxiao Pan xinhua Zhong Huashang rao Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina College of Chemistry and Civil Engineering Shaoguan UniversityShaoguan 512005GuangdongChina Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region Shaoguan UniversityShaoguan 512005GuangdongChina

Crystallization process determines the quality of perovskite films and the performances of resultant perovskite solar cells(PSCs).Dimethylamine oxalate has been proven as a multifunctional modulator,and is explored as an efficient additive in manipulating the crystallization process of CsPbI_(3) perovskite *** one hand,oxalate serves as the precipitator that facilitates the nucleation process of *** larger size of intermediate is conductive to the larger size and smaller grain boundaries of resultant *** the other hand,in subsequent annealing process,the phase conversion and growth process of transient perovskite can be decelerated due to the strong interactions of oxalate with both dimethylamine cation(DMA^(+))and Pb^(2+).Due to the optimized crystallization kinetics,the morphology and quality of CsPbI_(3) perovskite films are comprehensively improved with lower defect concentrations,and charge recombination loss is effectively *** from the optimized crystal quality of perovskite films,the carbon electrode-based CsPbI_(3) PSCs exhibit a champion efficiency of 18.48%.This represents one of the highest levels among all hole transport layer-free inorganic perovskite solar cells.

关键词： Solar cells Perovskite CsPbI_(3) Carbon electrodes Oxalate

Fabricating AC/DC nanogenerators based on single ZnO nanowires by using a nanomanipulator in a scanning electron microscope

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Nanotechnology and Precision Engineering 2024年第2期7卷 25-31页

作者： Mei Liu Mengfan He Aristide Djoulde Lingdi Kong Weilin Su xin Bai Jinbo Chen Jinjun rao Zhiming Wang Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronic Engineering and AutomationShanghai UniversityShanghai 200444China Guangdong Provincial Key Laboratory of Fuel Cell Technology School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641China

Single zinc oxide nanowires(ZnO NWs)are promising for nanogenerators because of their excellent semiconducting and piezoelectric properties,but characterizing the latter efficiently is *** reported here,an electrical breakdown strategy was used to construct single ZnO NWs with a specific *** the high operability of a nanomanipulator in a scanning electron microscope,ZnO-NW-based twoprobe and three-probe structures were constructed for fabricating AC/DC nanogenerators,*** a ZnO NW,an AC output of between−15.31 mV and 5.82 mV was achieved,while for a DC nanogenerator,an output of24.3 mV was ***,the three-probe structure’s output method was changed to verify the distribution of piezoelectric charges when a single ZnO NW is bent by a probe,and DC outputs of different amplitudes were *** study provides a low-cost,highly convenient,and operational method for studying the AC/DC output characteristics of single NWs,which is beneficial for the further development of nanogenerators.

关键词： Zinc oxide nanowire Piezoelectric properties Nanomanipulator SEM AC/DC nanogenerators

A National Multicenter Survey on Management of Pain, Agitation, and Delirium in Intensive Care Units in China

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Chinese Medical Journal 2017年第10期130卷 1182-1188页

作者： Jing Wang Zhi-Yong Peng Wen-Hal Zhou Bo Hu xin rao Jian-Guo Li Department of Intensive Care Unit Zhongnan Hospital of Wuhan University Wuhan Hubei 430071 China Department of Clinical Medicine City College Wuhan universLty of Science and TechnoLogy Wuhan Hubei 430083 China

Background： The management of pain, agitation, and deliriunl （PAD） in Intensive Care Unit （ICU） is beneficial for patients and makes it widely applied in clinical practice. Previous studies showed that the clinical practice of PAD in ICU was improving： yet relatively little intbrmation is available in China. This study aimed to investigate the practice of PAD in ICUs in China. Methods： A multicenter, nationwide survey was conducted using a clinician-directed questionnaire from September 19 to December 18, 2016. The questionnaire focused on the assessment and naanagement of PAD by the clinicians in ICUs. The practice of PAD was compared among the lbur regions of China （North, Southeast, Northwest, and Southwest）. The data were expressed as percentage and fi＇equency. The Chi-square test, Fisher＇s exact test, and line-row Chi-square test were used. Results： Of the 1011 valid questionnaire lbrms, the response rtite was 80.37%. The clinicians came from 704 hospitals across 158 cities of China. The rate of PAD assessment was 75.77%, 90.21%, and 66.77%, respectively. The rates of PAD scores were 45.8%, 68.94%, and 34.03%, respectively. The visual analog scale, Richmond agitation-sedation scale, and conlktsion assessment method lbr the ICU were the first choices of scales for PAl） assessment. Fentanyl, midazolam, and dexmedetomidine were the first choices of agents for analgesic, sedation, and delirium treatment. While choosing analgesics and sedatives, the clinicians put the pharmacological characteristics of drugs in the first place （66.07% and 76.36%）. Daily interruption for sedation was carried out by 67.26% clinicians. Most of the clinicians （87.24%） used analgesics while using sedatives. Of the 738 （73%） clinicians titrating the sedatives oil the basis of the proposed target sedation level, 268 （26.61%） clinicians just depended on their clinical experience. Totally, 519 （51.34%） clinicians never used other nondrug strategies tbr PAD. The working time of clinicians was

关键词： Agitation Delirium: Intensive Care Unit Pain Sedation

Preliminary study of a new pathological evolution-based clinical hepatolithiasis classification

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World Journal of Gastroenterology 2015年第7期21卷 2169-2177页

作者： Fu-Bao Liu Xiao-Jun Yu Guo-Bing Wang Yi-Jun Zhao Kun Xie Fan Huang Jiang-Ming Cheng xin-rao Wu Chao-Jie Liang Xiao-Ping Geng Department of Hepato-PancreatoBiliary Surgery the First Affiliated Hospital Anhui MedicalUniversity

AIM:To investigate clinical features,treatment strategies and outcomes of patients with hepatolithiasis(HL)undergoing surgical treatment,using a new ***:Sixty-eight HL patients were hospitalized and treated surgically from August 2011 to December2012 and they were classified into four HL types according to pathological evolution of the *** four HL types included typeⅠprimary type(defined as no previous biliary tract surgery),typeⅡinflammatory type(with previous biliary tract surgery and cholangitis),typeⅢmass-forming type(HL complicated by hepatic mass-forming lesion),and typeⅣterminal type(with secondary biliary cirrhosis and resultant portal hypertension).The perioperative data including general information,imaging data,postoperative complications,and immediate and final stone clearance rate were obtained and ***:In all 68 patients,the proportion of HL typeⅠ-Ⅳwas 50%(34/68),36.8%(25/68),10.3%(7/68)and 2.8%(2/68),*** pain was the main clinical manifestation in typeⅠ(88.2%),fever was predominant in typeⅡ(52.0%),the malignancy rate in typeⅢwas high(71.4%),and portal hypertension and spleen enlargement were common in typeⅣ(2/2,100.0%).Liver resection rate for typesⅠ-Ⅲwas 79.4%,72.0%and 71.4%,*** overall incidence of postoperative complications was23.5%(16/68).There were no perioperative *** average length of hospital stay was 12.7±7.3 *** and final stone clearance rate was 73.5%(50/68)and 89.7%(61/68),***-nine of68 patients(86.8%)were followed-up for>1 year after surgery,and 96.6%of these patients(57/59)had a good quality of life according to a criterion recommended for postoperative evaluation of quality of ***:The pathological evolution-based clinical classification of HL has a role in optimizingtreatment strategy,and patients can benefit from thisclassification when it is used properly.

关键词： Liver diseases Hepatolithiasis Clinical pathology

Multiscale control of MnO_(2) growth via[WO_(6)]-perturbed[MnO_(6)]assembly toward a favorable balance between capacitance and rate performance

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Rare Metals 2024年第4期43卷 1658-1671页

作者： Jin-Kang Liu Tian-Shuo Yang Zhi-Bin Ren Adekunle-Adedapo Obisanya xin-Yi Tan Yan-Di rao Jun-Shuang Zhou Fa-Ming Gao Jian-Ren Wang Hebei Key Laboratory of Applied Chemistry Yanshan UniversityQinhuangdao066004China

Although pseudocapacitive manganese dioxide(MnO_(2))integrates the high-power merit of carbonaceous materials with the high-energy merit of battery-type materials,it still has a long way to go in achieving a more satisfactory balance of higher energy and power density,and in decoupling the relationship of structural characteristics with energy storage *** realize such goals,a bottom-up[WO_(6)]-perturbed[MnO_(6)]assembly strategy has been developed here due to their similar structure,yet mismatched lattice *** facile protocol is capable of finely controlling the morphology and crystal structure of MnO_(2)by adjusting its internal[WO_(6)]***,the as-prepared W_xMnO_(2)is treated as an ideal platform to scrutinize the correlations of the structure with the energy storage *** operando Raman spectra and finite element analysis have fully demonstrated the superiority of the locally ordered defects-enriched structure of W_(0.02)-MnO_(2),which could reach a favorable balance between the ion diffusion equilibrium time and the number of active *** a result,the W_(0.02)-MnO_(2)is able to deliver a high capacitance of 292 F·g^(-1)at a current density of 1 A·g^(-1)and a remarkable rate performance with a 60%capacity retention at a current density of 50 A·g^(-1).The further unveiled structure-performance relationship provides a guideline for the design of better pseudocapacitive energy storage devices.

关键词： Supercapacitors Pseudocapacitive materials MnO_(2) Tungsten doping Crystal structure regulation

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深圳市社区健康服务整体管理调研评估与分析

中国卫生经济 2017年第6期36卷 60-62页

作者：饶昕深圳市卫生计生能力建设和继续教育中心广东深圳518200

目的:调研评估深圳市社区健康服务整体管理水平,分析其影响因素,寻求相关启示,为卫生决策提供参考依据。方法:2016年组织了全市社区健康服务整体管理评估,由受调研单位统计上报。结果:共有590家社康中心、65家举办单位参加了全面评估,... 详细信息

目的:调研评估深圳市社区健康服务整体管理水平,分析其影响因素,寻求相关启示,为卫生决策提供参考依据。方法:2016年组织了全市社区健康服务整体管理评估,由受调研单位统计上报。结果:共有590家社康中心、65家举办单位参加了全面评估,其中分层随机抽取60家社康中心、42家举办单位参加市级复核评估。结论:要做好社区健康服务的建设与发展,需要在政策环境、财政支持等方面继续保持和提升,包括政府对社区基本公共卫生服务和基本医疗服务经费支持、人员配置标准与经费支持、医保政策支持,社康在现有管理体制下,建立高效的社康运行机制,为居民提供方便、快捷的基本诊疗和基本公共卫生服务项目,解决居民基本健康需求。

关键词：社区卫生服务管理与评价深圳

Prognostic prediction model of colorectal cancer based on preoperative serum tumor markers

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1344-1353页

作者： Yu-Hang Diao Si-Qi rao xin-Peng Shu Yong Cheng Can Tan Li-Juan Wang Dong Peng Department of Gastrointestinal Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND Preoperative serum tumor markers not only play a role in the auxiliary diagnosis and postoperative monitoring in colorectal cancer(CRC),but also have been found to have potential prognostic *** To analyze whether preoperative serum tumor markers,including carcinoembryonic antigen(CEA)and carbohydrate antigen 19-9(CA19-9),affect the prognosis of *** This was a retrospective study conducted in a single *** with nonmetastatic CRC who underwent initial surgery between January 2011 and January 2020 were enrolled and divided into development site and validation site groups at a ratio of 7:*** independent prognostic factors were screened by Cox regression analysis,and finally,a prognostic nomogram model was *** newly developed model was tested by internal *** Eventually,3526 postoperative patients with nonmetastatic CRC were included in the *** were 2473 patients at the development site and 1056 patients at the validation ***(P<0.01,HR=1.042,95%CI=1.033-1.051),tumor node metastasis(TNM)classification(P<0.01,HR=1.938,95%CI=1.665-2.255),preoperative CEA(P=0.001,HR=1.393,95%CI=1.137-1.707)and CA19-9(P<0.01,HR=1.948,95%CI=1.614-2.438)levels were considered independent prognostic factors for patients with nonmetastatic CRC and were used as variables in the nomogram *** areas under the curve of the development and validation sites were 0.655 and 0.658,*** calibration plot also showed the significant performance of the newly established *** We successfully constructed a nomogram model based on age,TNM stage,preoperative CEA,and CA19-9 levels to evaluate the overall survival of patients with nonmetastatic CRC.

关键词： Colorectal cancer Prognosis Carcinoembryonic antigen Carbohydrate antigen 19-9 Nomogram

Fabrication of High-power White LEDs and White Light Uniformity Testing

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Semiconductor Photonics and Technology 2007年第2期13卷 97-103页

作者： YU xin-mei rao Hai-bo HU Yue LI Jun-fei HOU Bin School of Optoelectronic Information University of Electronic Science and Technology of China Chengdu 610054 CHN

As the blue and yellow lights are complementary colors, a blue InGaN LED chip is coated hy a yellow phosphor film to generate white light based on luminescence conversion mechanism. The emitted light of a blue LED is used as the primary source for exciting fluorescent material such as cerium doped yttrium aluminum garnet with the formula Y3Al2O12 ： Ce^3＋（in short： YAG ： Ce^3＋）. The matching of the spectrum of the blue LED chips and the YAG ： Ce^3＋ yellow phosphor is studied to improve the conversion efficiency. The packaging methods and manufacturing processes for high power single chip-white LEDs are introduced. The uniformity of the output white light is investigated. Based on the characteristics of the high power white LEDs, some approaches and processes are suggested to improve the light uniformity when they are fabricated. The effectiveness of those approaches on the improvement of LEDs is discussed in detail and some interesting conclusions are also presented.

关键词： solid state lighting high-power white LED packaging phosphor layer matching uniformity

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螺旋CT在矽肺诊断中的应用价值

重庆医学 2010年第20期39卷 2727-2728,2731页

作者：饶新民重庆市疾病预防控制中心 400042

目的探讨螺旋CT与常规数字X线摄影检出矽肺病灶的差异。方法随机选择2004-2009年通过螺旋CT和常规数字X线摄影检查确诊的矽肺患者60例,回顾性分析两者的病灶检出率及影像学表现,用SPSS10.0统计软件对检查结果进行相关的统计学分析。结... 详细信息

目的探讨螺旋CT与常规数字X线摄影检出矽肺病灶的差异。方法随机选择2004-2009年通过螺旋CT和常规数字X线摄影检查确诊的矽肺患者60例,回顾性分析两者的病灶检出率及影像学表现,用SPSS10.0统计软件对检查结果进行相关的统计学分析。结果螺旋CT检查与常规数字X线摄影检出结果分别为：0.2-1.0 cm散在中、高密度结节34、25例;大于1.0 cm的结节20、16例;大小病变同时存在6、4例;肺气肿征象52、35例;胸膜病变49、39例;伴有新或陈旧结核灶19、15例;肺门、纵隔淋巴结肿大或钙化45、25例。两者在对0.1-0.5 cm散在病灶发现率、肺气肿的评判、伴发结核病灶、淋巴结肿大或钙化等方面比较差异有统计学意义（P〈0.001）;对大于1.0 cm病灶两者比较,差异也有统计学意义（P〈0.05）。结论螺旋CT扫描有利于矽肺的正确诊断和鉴别诊断,尤其有利于矽肺微小病灶的确定,在判定肺气肿、淋巴结肿大等方面明显优于常规X线检查。

关键词：矽肺体层摄影术,X线计算机诊断