检索结果-南通市图书馆

Design and test results of a low-noise readout integrated circuit for high-energy particle detectors

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2010年第1期21卷 44-48页

作者： zhang Mingming CHEN zhongjian zhang Yacong LU Wengao JI Lijiu Key Laboratory of Microelectronic Devices and Circuits Institute of Microelectronics Peking University Beijing 100871 China

A low-noise readout integrated circuit for high-energy particle detector is *** noise of charge sensitive amplifier was suppressed by using single-side amplifier and resistors as source ***-time semi-Gaussian filter is chosen to avoid switch *** peaking time of pulse shaper and the gain can be programmed to satisfy *** readout integrated circuit has been designed and fabricated using a 0.35 μm double-poly triple-metal CMOS *** results show the functions of the readout integrated circuit are *** equivalent noise charge with no detector connected is 500–700 e in the typical mode,the gain is tunable within 13–130 mV/fC and the peaking time varies from 0.7 to 1.6 μs,in which the average gain is about 20.5 mV/fC,and the linearity reaches 99.2%.

关键词：读出集成电路高能粒子探测器低噪声设计测试 CMOS工艺峰值时间单端放大器

Studies on treatment of chlorophenol-containing wastewater by microbial fuel cell

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2007年第24期52卷 3448-3451页

作者： GU HeYan zhang XingWang LI zhongjian LEI LeCheng Institute of Environmental Pollution Control Technologies Xixi Campus Zhejiang University Hangzhou 310028 China

A microbial fuel cell with 4-CP as oxidant was established to investigate the feasibility of 4-CP dechlorination in the cathodic chamber of MFC. It demonstrated good performance on electricity generation with Pmax 12.4 mW/m2 and CE 22.7%. Besides, 60 mg/L 4-CP could be completely dechlorinated in 45 h in the MFC, and 4-CP dechlorination process and electricity generation process had obvious synergistic effect.

关键词：废水处理微生物燃料电池氯酚氧化剂脱氯

Waterproof of rock joint with lead strip for splitting tuff sheet in ancient China quarrying caverns

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2012年第4期55卷 960-969页

作者： YANG ZhiFa zhang LuQing YUE ZhongQi zhang zhongjian YANG TianYao LIN XianJian TAO KeJie ZHU JieWang Key Laboratory of Engineering Geomechanics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Department of Civil Engineering University ofHong Kong Hong Kong China Shepandao Hotspring Resort Co. Ltd. Sanmen 317100 China State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Civil Engineering Institute Shandong Construction University Jinan 250001 China

This paper presents the relics of rock joints caulked with lead strips, unearthed by the authors in 2007 and 2008. The relics were in ancient quarry caverns in Shepan Island, Zhejiang Province, eastern China. The quarry activities were mainly carried out for production of regular tuff stone plates about 800 years ago. Each of the lead strips was sealed into a rock joint by punching manually and carefully. At present, the lead strips still contact tightly with the rock joints and new mineral cerussite is found to have formed at the contact surfaces between the lead strip and its caulked rock joint. The use of lead strips caulking rock joints in quarry caverns is found for prevention of water from seeping out of the country rocks into quarry cavern bases, where all of the in-situ intact tuff rock was manually and near-horizontally split into thin rock sheets one by one for production of regular tuff plates. Furthermore, it is found that the tensile splitting of tuff sheets at the cavern base required the intact rocks at the cavern base had to be dry. Through this horizontal base splitting for tuff sheets from the top to the bottom, a dome-shape interior space was formed for each rock cavern with the near horizontal imprints of thin sheet layers permanently on the sidewalls.

关键词： rock cavern lead strips sealant joints waterproof tuff splitting quarry

An inducible model for specific neutrophil depletion by diphtheria toxin in mice

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2021年第8期64卷 1227-1235页

作者： Tianzhu Chao Liaoxun Lu Lichen zhang Rong Huang Zhuangzhuang Liu Binhui Zhou Eryan Kong zhongjian zhang Toby Lawrence Yinming Liang Institute of Psychiatry and Neuroscience Xinxiang Medical UniversityXinxiang 453003China Henan Key Laboratory of Immunology and Targeted Therapy School of Laboratory MedicineXinxiang Medical UniversityXinxiang 453003China Laboratory of Genetic Regulators in the Immune System Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory MedicineSchool of Laboratory MedicineXinxiang Medical UniversityXinxiang 453003China Centre for Inflammation Biology and Cancer Immunology King s College LondonLondon SE11ULUK

Neutrophils are crucial for immunity and play important roles in inflammatory diseases;however,mouse models selectively deficient in neutrophils are limited,and neutrophil-specific diphtheria toxin(DT)-based depletion system has not yet been *** this study,we generated a novel knock-in mouse model expressing diphtheria toxin receptor(DTR)under control of the endogenous Ly6G *** showed that DTR expression was restricted to Ly6G+neutrophils and complete depletion of neutrophils could be achieved by DT treatment at 24-48 h *** characterized the effects of specific neutrophil depletion in mice at steady-state,with acute inflammation and during tumor *** study presents a valuable new tool to study the roles of neutrophils in the immune system and during tumor progression.

关键词： neutrophil immunity depletion

基于不同胶膜封装的n型双玻TOPCon光伏组件的可靠性研究

在线全文

学校读者我要写书评

暂无评论

太阳能 2024年第2期 103-108页

作者：张中建赵桂香宋爽李世宇黄惜惜庄浩中节能太阳能科技(镇江)有限公司镇江212132 中节能太阳能股份有限公司北京100082

胶膜是光伏组件封装时的关键材料,其性能的优劣将直接影响光伏组件输出功率的大小和使用寿命。采用两种不同的胶膜封装n型TOPCon光伏组件,并通过湿热、热循环、电势诱导衰减(PID)测试,研究两种胶膜封装的光伏组件的电性能和可靠性。实... 详细信息

胶膜是光伏组件封装时的关键材料,其性能的优劣将直接影响光伏组件输出功率的大小和使用寿命。采用两种不同的胶膜封装n型TOPCon光伏组件,并通过湿热、热循环、电势诱导衰减(PID)测试,研究两种胶膜封装的光伏组件的电性能和可靠性。实验结果表明:正、背面均采用聚烯烃弹性体(POE)胶膜的光伏组件较正面POE胶膜+背面聚乙烯-聚醋酸乙烯酯共聚物(EVA)胶膜的光伏组件最大功率高2.2 W,光电转换效率高0.08%;正、背面均采用POE胶膜的光伏组件在经过湿热、PID测试后输出功率衰减也低于正面POE胶膜+背面EVA胶膜的光伏组件。POE胶膜可在一定程度上降低出现PID现象的风险,在很大程度上延长光伏组件的使用寿命,因此越来越多的双玻光伏组件开始使用POE胶膜。

关键词：胶膜 TOPCon光伏组件电性能输出功率衰减可靠性

A hypothesis for crack free interior surfaces of Longyou caverns caved in argillaceous siltstone 2000 years ago

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2010年第2期4卷 165-177页

作者： Zhong Qi YUE Shaopeng FAN Zhifa YANG Lihui LI Luqing zhang zhongjian zhang Civil Engineering Department The University of Hong KongHong KongChina Key Laboratory of Engineering Geomechanics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

Five complete caverns were discovered in Longyou in *** were manually caved in argillaceous siltstone at shallow depths more than 2000 years *** they were un-watered,their integrity was maintained completely,and their interior rock surfaces were free of old *** then,however,the rock's interior faces have initiated and propagated more and more *** paper attempts to address the question of why the rock interior faces were free of old cracks once they were *** address this question,this paper proposes a hypothesis that the argillaceous siltstone has the ability of self-healing its cracks over a short period of time under weak acid water *** and evidence are presented herewith to prove the *** include observations and measurements in the field and test results in the ***,a three-point bending test is used to form a tensile crack in a rectangular rock specimen and a deadload test for the specimen immersed in initially weak acid water is used for self-healing its *** results have shown that the argillaceous siltstone is in a state of weak alkalinity and the rain water at the site is in a state of weak ***,when it is immersed in weak acid water for some time,the argillaceous siltstone would be able to make chemical reactions to generate new minerals such as *** new minerals would be able to infill the cracks and then heal the crack within a few *** the crack is self-healed,the rock can regain its strength and ***,the rock interior surfaces could be free of old cracks when the water was pumped out of the caverns.

关键词： rock cavern grotto Longyou argillaceous siltstone crack water environment self-healing

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

HJT太阳电池光注入退火工艺的增效研究

太阳能 2024年第1期 57-62页

作者：黄惜惜姜利凯赵桂香李世宇张中建高荣刚中节能太阳能科技(镇江)有限公司镇江212132 中节能太阳能股份有限公司北京100082

在异质结(HJT)太阳电池制备过程中,低温固化工艺后对太阳电池进行光注入退火可以实现太阳电池光电转换效率提升。研究了HJT太阳电池n面进行光注入退火处理时,光注入退火时间、光注入退火温度,以及双面光注入退火对光电转换效率提升的影... 详细信息

在异质结(HJT)太阳电池制备过程中,低温固化工艺后对太阳电池进行光注入退火可以实现太阳电池光电转换效率提升。研究了HJT太阳电池n面进行光注入退火处理时,光注入退火时间、光注入退火温度,以及双面光注入退火对光电转换效率提升的影响,同时还分析了光注入退火处理对不同光电转换效率档位HJT太阳电池增效的影响。结果表明:1)随着光注入退火时间的增加,HJT太阳电池光电转换效率提升幅度先增加后基本保持稳定;2)随着光注入退火温度的增加,HJT太阳电池光电转换效率提升幅度先增加后减小;3)太阳电池双面都进行光注入退火处理不能达到光电转换效率叠加提升的效果;4)光注入退火处理对光电转换效率低的HJT太阳电池的增效效果更好,主要是因为此类太阳电池内部及表面的缺陷更多。

关键词： n型太阳电池异质结太阳电池光注入退火钝化光电转换效率

维普期刊数据库博看期刊

Preparation of a novel lactose-lignin hydrogel catalyst with self-reduction capacity for nitrogenous wastewater treatment

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2024年第9期18卷 25-36页

作者： Fan zhang Yanzhu Guo Xianhong Wu Ce Gao Qingda An zhongjian Tian Runcang Sun Key Laboratory of Pulp and Paper Science&Technology of Ministry of Education Qilu University of TechnologyShandong Academy of SciencesJinan 250353China The Liaoning Province Key Laboratory of Paper and Pulp Engineering The Dalian Key Laboratory of High Value Application and Development of Botanical ResourcesThe Key Laboratory of High Value Utilization of Botanical Resources of China Light IndustryDalian Polytechnic UniversityDalian 116034China

A novel carboxylated lactose/sodium lignosulfonate/polyacrylic acid hydrogel composites with self-reduction capacity was successfully synthesized by self-assembly *** hydrogel with well-developed porous structure provided abundant anchoring points and reduction capacity for transforming Ag^(+)into silver *** nanoparticles dispersed among the network of hydrogel and the composites exhibited catalytic *** catalytic performance was evaluated via degradation of p-nitrophenol,rhodamine B,methyl orange and methylene blue,which were catalyzed with corresponding reaction rate constants of 0.04338,0.07499,0.04891,and 0.00628 s^(–1),*** addition,the catalyst exhibited stable performance under fixed-bed condition and the corresponding conversion rate still maintained more than 80%after 540 ***,the catalytic performance still maintained effective in tap water and simulated *** catalytic efficiency still remained 99.7%with no significant decrease after 8 cycles.

关键词： carboxylated lactose Ag NPs self-reduction nitrogenous wastewater

Chemical Scissors Tailored Nano‑Tellurium with High‑Entropy Morphology for Efficient Foam‑Hydrogel‑Based Solar Photothermal Evaporators

维普期刊数据库评论

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 2024年第3期16卷 149-168页

作者： Chenyang Xing Zihao Li Ziao Wang Shaohui zhang zhongjian Xie Xi Zhu Zhengchun Peng State Key Laboratory of Radio FrequencyHeterogeneous Integration Shenzhen UniversityShenzhen 518060People’s Republic of China Center for Stretchable Electronics and NanoSensors College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China School of Science and Engineering The Chinese University of Hong KongShenzhenShenzhen 518172People’s Republic of China Institute of Pediatrics Shenzhen Children’s HospitalShenzhen 518038GuangdongPeople’s Republic of China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060People’s Republic of China

The development of tellurium(Te)-based semiconductor nanomaterials for efficient light-to-heat conversion may offer an effective means of harvesting sunlight to address global energy ***,the nanosized Te(nano-Te)materials reported to date suffer from a series of drawbacks,including limited light absorption and a lack of surface ***,we report the preparation of nano-Te by electrochemical exfoliation using an electrolyzable room-temperature ionic ***,cations,and their corresponding electrolytic products acting as chemical scissors can precisely intercalate and functionalize bulk *** resulting nano-Te has high morphological entropy,rich surface functional groups,and broad light *** also constructed foam hydrogels based on poly(vinyl alcohol)/nano-Te,which achieved an evaporation rate and energy efficiency of 4.11 kg m^(−2)h^(−1)and 128%,respectively,under 1 sun ***,the evaporation rate was maintained in the range 2.5-3.0 kg m^(−2)h^(−1)outdoors under 0.5-1.0 sun,providing highly efficient evaporation under low light conditions.

关键词： Tellurium High entropy Electrochemical modification Solar absorption Evaporation rate