检索结果-南通市图书馆

High Thermoelectric Performance of Cu-Doped PbSe-PbS System Enabled by High-Throughput Experimental Screening

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2020年第1期2020卷 166-173页

作者： Li You Zhili Li Quanying Ma Shiyang He Qidong Zhang Feng Wang Guoqiang Wu Qingyi Li pengfei luo Jiye Zhang Jun luo School of Materials Science and Engineering Shanghai University99 Shangda RoadShanghai 200444China Materials Genome Institute Shanghai University99 Shangda RoadShanghai 200444China

Recent advances in high-throughput(HTP)computational power and machine learning have led to great achievements in exploration of new thermoelectric ***,experimental discovery and optimization of thermoelectric materials have long relied on the traditional Edisonian trial and error ***,we demonstrate that ultrahigh thermoelectric performance in a Cu-doped PbSe-PbS system can be realized by HTP experimental screening and precise property *** the HTP experimental technique with transport model analysis,an optimal Se/S ratio showing high thermoelectric performance has been efficiently screened ***,based on the screened Se/S ratio,the doping content of Cu has been subtly adjusted to reach the optimum carrier *** a result,an outstanding peak zT~1:6 is achieved at 873 K for a 1.8 at%Cu-doped PbSe_(0.6)S_(0.4) sample,which is the superior value among the n-type Te-free lead *** anticipate that current work will stimulate large-scale unitization of the HTP experimental technique in the thermoelectric field,which can greatly accelerate the research and development of new high-performance thermoelectric materials.

关键词： materials. precise doping

Heterogeneous h-BN@Cyclodextrin@Pd（II） Nanomaterial： Fabrication, Characterization and Application as a Highly Efficient and Recyclable Catalyst for C-C Coupling Reactions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2017年第5期33卷 811-815页

作者： SANG Rui CHENG Xu LI Weijian luo pengfei ZHANG Yong NIE Ruifang HAI Li WU Yong Key Laboratory of Drug Targeting and Drug Delivery System of Education Ministry Department of Medicinal Chemistry West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China

An efficient and ligand-free method for the Suzuki and Heck cross-coupling reactions has been success- fully developed using h-BN-supported palladium as the catalyst. This green methodology represents a cost-effective and operationally convenient process for the synthesis of biaryls, stilbenes and acrylates. Wide scope of substrates, good to excellent yields, low reaction time, water as solvent, ligand-free, non-toxicity and recyclability of the catalyst are the main merits of these protocols. In addition, the h-BN@y-CD@Pd（II） nanomaterial has been fully characte- rized by TG, SEM, IR, XRD, XPS and ICP-AES analysis. And it could be easily recovered and reused for at least nine times without any considerable loss of catalytic activity. Above all, this work demonstrates the possibility of using cyclodextrin-modified h-BN as an efficient support for the hydrophilic heterogeneous catalysts.

关键词： Hexagonal boron nitride Cyclodextrin Heterogeneous catalysis C-C cross coupling Water

Ablative fractional CO_(2)laser surgery improving sleep quality,pain and pruritus in adult hypertrophic scar patients:a prospective cohort study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Burns & Trauma 2021年第1期9卷 372-382页

作者： Kaiyang Lv Huazhen Liu Haiting Xu Caixia Wang Shihui Zhu Xiaozhen Lou pengfei luo Shichu Xiao Zhaofan Xia Department of Plastic Surgery Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai 200092People’s Republic of China Department of Burn Surgery the First affiliated Hospital to Naval Medical UniversityShanghai 200433People’s Republic of China Department of Burn and Plastic Surgery Shandong Provincial Hospital Affiliated to Shandong UniversityJinanShandong 250021People’s Republic of China Department of Plastic Surgery The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhouZhejiang 325000People’s Republic of China Shanghai Institute of Laser Technology Shanghai 200233People’s Republic of China

Background:Poor sleep quality is associated with a decrease in quality of life in patients with major burn scars,combined with pruritus and *** interventions have been reported to improve the sleep quality of patients with *** the current prospective cohort study,we investigated the efficacy of CO_(2)-ablative fractional laser(AFL)surgery vs conventional surgery in post-burn patients with hypertrophic scars with sleep quality as the primary study ***:In total 68 consecutive patients undergoing scar surgical treatment were recruited,including a CO_(2)-AFL surgery cohort(n=35)and a conventional surgery cohort(n=33).A subgroup from the AFL cohort was *** quality,pain and pruritus were *** linear regression analyses were performed to reveal the effect of CO_(2)-AFL ***:The CO_(2)-AFL surgery cohort had significantly lower Pittsburgh sleep quality index(PSQI)global scores than the conventional surgery cohort after the last surgical *** the subgroup of patients receiving hardware sleep monitoring,CO_(2)-AFL markedly increased deep sleep time,deep sleep efficiency and reduced initial sleep *** to the conventional surgery cohort,the CO_(2)-AFL cohort presented significantly lower pain and pruritus *** analysis showed pain and pruritus were significantly associated with PSQI scores,and there were also significant correlations between pain and pruritus *** linear regression analysis showed that surgery method was negatively linearly correlated with visual analog scale(VAS)pain score,brief pain inventory(BPI)total,VAS pruritus score,5-D itch scale total,four-item itch questionnaire(FIIQ)total and PSQI ***:CO_(2)-AFL surgery significantly improved sleep quality and reduced pain and pruritus of hypertrophic scar *** alleviation of sleep disorder was associated with improvement of deep sleep quality including deep sleep time and deep sleep deficiency

关键词： Burn scar Ablative CO_(2)fractional laser Cardiopulmonary coupling Sleep quality Pain Pruritus

Ultrahigh gain hot-electron tunneling transistor approaching the collection limit

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2023年第6期66卷 307-308页

作者： Jun LIN pengfei luo Xinpei DUAN Wujun ZHANG Chao MA Tong BU Wanhan SU Bei JIANG Guoli LI Xuming ZOU Ting YU Lei LIAO Xingqiang LIU Faculty of Physics and Electronic Science Hubei University State Key Laboratory for Chemo/Biosensing and Chemometrics College of Semiconductors (College of Integrated Circuits)Hunan University School of Physics and Technology Wuhan University

A hot-electron transistor(HET) is a unipolar and majority carrier device with voltage-controlled transport of ballistic hot electrons,and the monochromatic high-energy hot electrons are afforded by the tunnel and filter oxide *** injected hot electrons from the emitter transit through the tunnel barrier with a width below the carrier mean free path(MFP) into the base region and then cross the filter barrier and are finally collected by the collector.

关键词：

成熟型企业家的融资策略与道德风险及债务积压问题

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

系统工程理论与实践 2017年第3期37卷 580-588页

作者：罗鹏飞杨招军张勇湖南大学金融与统计学院长沙410079 南方科技大学金融系深圳518055

本文假设企业家是时间偏好不一致的且属于成熟型,企业现金流服从双指数跳过程,利用资产定价理论,解析地得到了企业股权,债券价值以及最优破产水平.分析了时间偏好不一致对成熟型企业家的企业最优资本结构,破产决策以及风险转移动机和债... 详细信息

本文假设企业家是时间偏好不一致的且属于成熟型,企业现金流服从双指数跳过程,利用资产定价理论,解析地得到了企业股权,债券价值以及最优破产水平.分析了时间偏好不一致对成熟型企业家的企业最优资本结构,破产决策以及风险转移动机和债务积压问题的影响.数值分析表明:较时间偏好一致而言,成熟企业家往往选择较小券息,较高的破产水平.时间偏好不一致减弱了成熟企业家的风险转移动机,却加剧了债务积压程度.尤其是,本文模型给出了"债务保守"之谜的一个新解释.

关键词：时间偏好不一致成熟型企业家资本结构风险转移债务积压

在线全文

学校读者我要写书评

暂无评论

基于跳风险的动态代理与托宾Q理论

系统工程理论与实践 2017年第8期37卷 2033-2042页

作者：甘柳杨招军罗鹏飞湖南商学院财政金融学院长沙410205 湖南大学金融与统计学院长沙410079 南方科技大学金融系深圳418055

引入刻画企业突发损失的泊松跳和管理者自利冒险行为,构建投资Q理论下的动态代理模型.首先基于管理者不可观测的努力和冒险行为进行最优合同设计,利用鞅方法给出了管理者价值函数的演变方程,得到了合同激励相容的充分必要条件.其次,运... 详细信息

引入刻画企业突发损失的泊松跳和管理者自利冒险行为,构建投资Q理论下的动态代理模型.首先基于管理者不可观测的努力和冒险行为进行最优合同设计,利用鞅方法给出了管理者价值函数的演变方程,得到了合同激励相容的充分必要条件.其次,运用随机控制方法,推导了股东价值满足的微分方程,同时给出了最优动态投资策略.数值分析表明,管理者的冒险行为会导致股东价值损失并使得动态投资降到更低水平,另外限制管理者冒险需要额外的管理成本,股东会在一定的程度上放任管理者的冒险.最后就相关参数与管理者冒险程度之间的关系进行了讨论.

关键词：最优合同泊松跳风险管理者冒险行为托宾Q

Cortico-striatal gamma oscillations are modulated by dopamine D3 receptors in dyskinetic rats

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第4期20卷 1164-1177页

作者： pengfei Wang Yuewei Bi Min Li Jiazhi Chen Zhuyong Wang Huantao Wen Ming Zhou Minjie luo Wangming Zhang Neurosurgery Center Department of Pediatric NeurosurgeryGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

Long-term levodopa administration can lead to the development of levodopa-induced *** oscillations are a widely recognized hallmark of abnormal neural electrical activity in levodopa-induced ***,studies have reported increased oscillation power in cases of levodopa-induced ***,little is known about how the other electrophysiological parameters of gamma oscillations are altered in levodopa-induced ***,the role of the dopamine D3 receptor,which is implicated in levodopa-induced dyskinesia,in movement disorder-related changes in neural oscillations is *** found that the cortico-striatal functional connectivity of beta oscillations was enhanced in a model of Parkinson’s ***,levodopa application enhanced cortical gamma oscillations in cortico-striatal projections and cortical gamma aperiodic components,as well as bidirectional primary motor cortex(M1)↔dorsolateral striatum gamma *** of PD128907(a selective dopamine D3 receptor agonist)induced dyskinesia and excessive gamma oscillations with a bidirectional M1↔dorsolateral striatum ***,administration of PG01037(a selective dopamine D3 receptor antagonist)attenuated dyskinesia,suppressed gamma oscillations and cortical gamma aperiodic components,and decreased gamma causality in the M1→dorsolateral striatum *** findings suggest that the dopamine D3 receptor plays a role in dyskinesia-related oscillatory activity,and that it has potential as a therapeutic target for levodopa-induced dyskinesia.

关键词： aperiodic components dopamine D3 receptor dorsolateral striatum functional connectivity gamma oscillations levodopa-induced-dyskinesia local field potentials neuromodulation Parkinson’s disease primary motor cortex

Emergence of truncated PB1-F2 protein of H3N2 influenza virus during its epidemic period in Jiangsu Province, China

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2014年第8期127卷 1487-1492页

作者： Wei Pingmin luo pengfei Li wei Zi Hairong Qi Xian Deng Fei Qin Yuanfang Wu Bin Tang Fenyang Department of Epidemiology and Health Statistics School of Public Health Southeast University Nanjing Jiangsu 210009 China Department of Acute Infectious Disease Control and Prevention Jiangsu Provincial Center for Disease Control and Prevention Nanjing Jiangsu 210009 China

Background PB1-F2 protein has been proven to increase the pathogenicity of influenza A virus （IAV） strains in primary infection and in secondary bacterial infection. It can also regulate the activity of viral polymerase. However, it was shown in another retrospective study that a portion of IAVs do not express full-length PB1-F2 protein during virus development; different kinds of stop codons cause exits in the open reading frames and form PB1-F2 gene products with the corresponding genotypes. Truncated PB1-F2 in human H3N2 IAVs has long been detected in North America but its evolution in China is still unclear. Methods Influenza-like illnesses （ILls） from the whole of Jiangsu Province were collected and inspected to determine the type and subtype of the viruses. A portion of isolates collected in the epidemic period were selected as samples for later whole-genome sequencing, and the exact sequences were determined and analyzed. Results H3N2 influenza virus was one of the epidemical strains which had been prevalent during 2009-2010, in Jiangsu. Five H3N2 isolates with truncated PB1-F2 protein （25aa） were detected in influenza samples from Nanjing and Xuzhou, while seven similar H3N2 isolates were also reported in Niigata, Japan. Conclusion This emergence indicates the possibility that there has been transmission of the H3N2 virus between the two countries.

关键词： H3N2 subtype influenza A virus PB1-F2 protein truncation

在线全文

学校读者我要写书评

暂无评论

密集杂波环境下的数据关联快速算法

航空学报 1998年第3期19卷 305-309页

作者：郭晶罗鹏飞汪浩长沙国防科学技术大学

基于联合概率数据互联（ＪＰＤＡ）的思想，提出了一种新的数据关联快速算法（ＦａｓｔＡｌ－ｇｏｒｉｔｈｍｆｏｒＤａｔａＡｓｓｏｃｉａｔｉｏｎ，简称ＦＡＦＤＡ算法）。该方法不需象在最优ＪＰＤＡ算法中那样生成所有可能的联合互... 详细信息

基于联合概率数据互联（ＪＰＤＡ）的思想，提出了一种新的数据关联快速算法（ＦａｓｔＡｌ－ｇｏｒｉｔｈｍｆｏｒＤａｔａＡｓｓｏｃｉａｔｉｏｎ，简称ＦＡＦＤＡ算法）。该方法不需象在最优ＪＰＤＡ算法中那样生成所有可能的联合互联假设，因而具有计算量小，易于工程实现的特点。仿真结果表明，与最优ＪＰＤＡ算法相比，ＦＡＦＤＡ算法的跟踪性能令人满意，并且在密集杂波环境下可实时、有效地跟踪１００批次以上的目标。

关键词：多目标跟踪数据关联雷达跟踪杂波环境