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Efficient nonfullerene organic solar cells with active layers fabricated by water transfer printing

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Journal of Energy Chemistry 2019年第10期28卷 220-224页

作者： Lulu Sun xueshi jiang Yinhua Zhou Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information Huazhong University of Science and Technology

Preparation of high-quality films plays an important role to achieve high-performance nonfullerene (NF) organic solar cells. NF active layer films are typically fabricated by spin coating. Novel fabrication methods to process the NF active layer are desirable to be compatible with large-area production. Herein, we report on the fabrication of NF active layer films via a water transfer printing *** method delivers a uniform film with controllable film thicknesses. NF active layers of PDBD-T:ITIC and PBDB-T-2F:IT-4F were fabricated via the method to validate its effectiveness. Solar cells with the water transfer-printed active layers show comparable performance (up to 11.7%) to the cells with spin-coated active layers. Furthermore, NF solar modules containing 4-sub cells with the active area of 3.2 cm2 are also fabricated via the method. The module shows VOC of up to 3.4 V and a power conversion efficiency of 8.1% with the PBDB-T-2F:IT-4F active layer.

关键词： Nonfullerene organic solar cells Water transfer printing Film fabrication Solar module

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基于噪声估计的改进能量熵语音端点检测算法

电讯技术 2021年第8期61卷 1026-1033页

作者：蒋学仕中国西南电子技术研究所成都610036

针对传统能量熵的短时能量与子带谱熵容易受噪声环境影响,低信噪比下端点检测性能下降的问题,提出一种基于噪声估计的改进能量熵语音端点检测算法。首先对语音进行噪声估计并以此计算语音存在概率;然后利用估计的噪声能量修正短时能量,... 详细信息

针对传统能量熵的短时能量与子带谱熵容易受噪声环境影响,低信噪比下端点检测性能下降的问题,提出一种基于噪声估计的改进能量熵语音端点检测算法。首先对语音进行噪声估计并以此计算语音存在概率;然后利用估计的噪声能量修正短时能量,用语音存在概率作为加权系数优化子带谱熵,并将两者结合生成改进的能量熵;最后给出基于噪声估计的动态门限以及实时的端点检测策略。实验结果表明,在信噪比5 dB、0 dB的多种噪声环境中,基于噪声估计的改进能量熵端点检测算法相比传统能量熵算法与改进子带能谱比算法,检测正确率平均提升7%。

关键词：语音端点检测噪声估计语音存在概率改进能量熵动态门限

结合语音包络的变步长LMS语音自动增益控制

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电讯技术 2022年第2期62卷 252-258页

作者：蒋学仕中国西南电子技术研究所成都610036

针对现有最小均方误差(Least Mean Square,LMS)语音自动增益控制(Automatic Gain Control,AGC)算法其功率参量不能准确表示语音振幅、增益控制效率较低以及增益处理后语音失真较大等问题,提出使用语音包络作为参量的变步长LMS-AGC算法... 详细信息

针对现有最小均方误差(Least Mean Square,LMS)语音自动增益控制(Automatic Gain Control,AGC)算法其功率参量不能准确表示语音振幅、增益控制效率较低以及增益处理后语音失真较大等问题,提出使用语音包络作为参量的变步长LMS-AGC算法。首先按帧计算语音包络作为参量,提升参量表示语音振幅的准确度;然后利用递归平滑的语音包络误差平方,调节LMS算法的步长,提升算法的增益响应速度;最后将算法与低失真的限幅处理机制结合,解决现有LMS-AGC算法增益处理后存在过门限尖峰的问题。实验结果表明,相比现有基于功率的变步长LMS-AGC算法,基于语音包络的变步长LMS-AGC算法的增益响应速度更快,增益处理后客观语音质量评估(Perceptual Evaluation of Speech Quality,PESQ)平均提升0.4分,并且迭代运算量可以下降一个数量级。

关键词：语音自动增益控制语音包络变步长低失真

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一种应用于非亮度均衡干涉条纹的提取方法

应用激光 2015年第6期35卷 718-723页

作者：钟平谭敏刘富国杨波江学仕陈紫元何畔东华大学上海201620

光的干涉是现代检测计量的重要手段之一,如何精确地提取干涉条纹是确保该类仪器检测精度的关键。提出了一种非亮度均衡条件下干涉条纹的提取方法。首先,在分析阈值化分割条纹的缺陷的基础上,采用一种自适应亮度均衡方法,有效地避免常规... 详细信息

光的干涉是现代检测计量的重要手段之一,如何精确地提取干涉条纹是确保该类仪器检测精度的关键。提出了一种非亮度均衡条件下干涉条纹的提取方法。首先,在分析阈值化分割条纹的缺陷的基础上,采用一种自适应亮度均衡方法,有效地避免常规阈值化操作所导致的部分条纹丢失和断裂问题;然后,为准确地提取条纹的位置信息,根据图像连通性将处理图像分解成包含单个条纹的序列图像,再对条纹进行细化处理,得到单个像素宽的条纹;最后对序列图像合并处理,实现所有干涉条纹信息的提取,提出的方法能保证所提取条纹的清晰度和完整性。

关键词：干涉条纹正态检验自适应亮度均衡化条纹提取

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导热油-烟气综合余热利用工艺探讨

耐火与石灰 2015年第4期40卷 3-5,9页

作者：姜学仕倪军亮范孟洲郭黎明博广热能股份有限公司石家庄050035

梁式竖窑导热油余热由于热量小、温度低而易被忽视。通过对梁式竖窑热工分析及导热油余热分析,提出了导热油-烟气综合余热利用方案,并对经济效益进行分析。指出导热油烟气综合利用投资省,回报率高,操作简单,节能减排。

关键词：热耗余热利用节能减排梁式竖窑

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竖窑燃烧梁汽化冷却工艺探讨

耐火与石灰 2016年第3期41卷 21-24页

作者：姜学仕李振兴印明贡新海博广热能股份有限公司石家庄050035

国内梁式竖窑保有量较多,梁式竖窑大多都采用导热油进行冷却,导热油冷却能耗高、成本高,更主要的是大量的热通过散热器排空浪费。本文根据梁式竖窑生产工艺及使用要求提出了燃烧梁的直接汽冷新工艺,将锅炉换热原理引用到竖窑燃烧梁的生... 详细信息

国内梁式竖窑保有量较多,梁式竖窑大多都采用导热油进行冷却,导热油冷却能耗高、成本高,更主要的是大量的热通过散热器排空浪费。本文根据梁式竖窑生产工艺及使用要求提出了燃烧梁的直接汽冷新工艺,将锅炉换热原理引用到竖窑燃烧梁的生产工艺当中,实现梁汽冷的同时直接产生饱和或过热蒸汽输出。该工艺在实现节能减排的同时实现热利用,具有实际应用价值。

关键词：竖窑蒸汽热利用

Characteristics and Origins of Suspended Pyrite in the Mixing Zone of the Yangtze Estuary

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Journal of Ocean University of China 2020年第4期19卷 801-810页

作者： PANG Yue FAN Dejiang SUN Xiaoxia SUN xueshi LIU Ming YANG Zuosheng Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of EducationOcean University of ChinaQingdao 266100China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology(QNLM)Qingdao 266061China Center for Isotope Geochemistry and Geochronology Qingdao National Laboratory for Marine Science and Technology(QNLM)Qingdao 266061China

For a long time,most studies about pyrite have focused on sediments while only a few have focused on pyrite in *** this study,a method that combines the scanning electron microscopy(SEM)and the energy dispersive X-ray spectrometry(EDS)was used to compare pyrite particles suspended in water to those in associated bottom sediments,both obtained from the mixing zone of the Yangtze *** was found that the pyrite particles in the two media have similar morphologies and size *** particle morphology mainly includes two types,single crystal and aggregate,and the particle size mainly ranges from 0.5 to 2μ*** pyrite particles in water exhibit an increase in relative content towards the sea,and their transport and deposit processes are mainly affected by hydrodynamic *** is concluded that the pyrite particles in the suspended matter mainly derived from the resuspension of sediments,which are products of the early *** minerals may appear during the formation of pyrite,but are generally restricted by the diagenetic environment and local microenvironment.

关键词： Yangtze Estuary suspended matter pyrite resuspension authigenic mineral

Laboratory　Evaluation　Procedures　of　Formation　Damage　Induced　by　Completion　Fluids　in　Horizontal　Wells

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China Oil & Gas 1995年第3期2卷 35-39页

作者： Yan Jienian, jiang Guancheng and Wu xueshi(University of Petroleum,Dongying) University of Petroleum. Dongying

ＬａｂｏｒａｔｏｒｙＥｖａｌｕａｔｉｏｎＰｒｏｃｅｄｕｒｅｓｏｆＦｏｒｍａｔｉｏｎＤａｍａｇｅＩｎｄｕｃｅｄｂｙＣｏｍｐｌｅｔｉｏｎＦｌｕｉｄｓｉｎＨｏｒｉｚｏｎｔａｌＷｅｌｌｓ￥ＹａｎＪｉｅｎｉａｎ，ＪｉａｎｇＧｕ... 详细信息

ＬａｂｏｒａｔｏｒｙＥｖａｌｕａｔｉｏｎＰｒｏｃｅｄｕｒｅｓｏｆＦｏｒｍａｔｉｏｎＤａｍａｇｅＩｎｄｕｃｅｄｂｙＣｏｍｐｌｅｔｉｏｎＦｌｕｉｄｓｉｎＨｏｒｉｚｏｎｔａｌＷｅｌｌｓ￥ＹａｎＪｉｅｎｉａｎ，ＪｉａｎｇＧｕａｎｃｈｅｎｇａｎｄＷｕＸｕｅｓｈ...

关键词： Horizontal drilling Completion fluids Formation damage Evaluation

Diversity and Bioactivity of Cultivable Animal Fecal Actinobacteria

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Advances in Microbiology 2013年第1期3卷 1-13页

作者： Yi jiang Li Han Xiu Chen Min Yin Dan Zheng Yong Wang Shumei Qiu xueshi Huang Lab of Metabolic Disease Research and Drug Development China Medical University Shenyang China Sanqi Research Institute of Wenshan Wenshan China Yunnan Institute of Microbiology Yunnan University Kunming China Yunnan Wild Animal Park Kunming China

Microbial symbionts play important roles in food digestion and absorption, immunity, pathogens resistance, and health maintaining of their hosts by coevolution. To provide new sources for discovering new leader compounds of drugs, the diversity and bioactivities of cultivable actinobacteria from animal feces have been studied. 31 species of animal fecal samples were collected fromYunnanWildAnimalPark. The purified cultures of actinobacteria were isolated from these samples by using 5 media. The 16S rRNA gene sequences of 528 selected strains were determined, the phylogenetic analysis was carried out, and anti-microbial and anti-tumor activities were determined. 35 genera (including a new genus, Enteractinococcus) of actinobacteria from the 31 species of animal feces were identified. Some strains had high anti-tumor and antimicrobial activities. More than 50 secondary metabolites were isolated and identified, a novel bioactive macrolactam polyketide glycoside, Sannastatin, was found. Nine fecal streptomycete strains were fermented respectively, blended to the microbial manure, and used to prophylaxis and treatment of soil-borne disease of notoginseng in field. The incidence rate of the disease was lower 81% than agricultural chemicals. Fecal actinobacteria, a possibility as a new source for discovering drug leader, agricultural chemicals and other industry products, will be discussed.

关键词： Actinobacteria Diversity Bioactivity Animal Feces