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Histological observation on unique phenotypes of malformation induced in Xenopus tropicalis larvae by tributyltin

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Journal of Environmental Sciences 2012年第2期24卷 195-202页

作者： Junqi Liu Qinzhen cao Jing Yuan Xiaoli Zhang Lin Yu Huahong Shi Key Laboratory of Urbanization and Ecological Restoration Department of Environmental Science East China Normal University Shanghai State Key Laboratory of Estuarine and Coastal Research ＇East China Normal University Shanghai 200062 China

Tributyltin（TBT）,a biocide used in antifouling paints,has shown strong teratogenic effects on Xenopus tropicalis embryos at environmentally relevant *** embryos were exposed to 50,100 and 200 ng/L tributyltin chloride for 72 *** histological changes were further observed on abnormal eyes,enlarged trunks,enlarged proctodaeums and absence of fins induced by *** lens and the retinal layers of abnormal eyes were slightly or barely differentiated,and that the pigment epithelium was neither continuous nor *** abdomens were full of undifferentiated gut tissue with yolk-rich inclusions in the tadpoles with enlarged *** proctodaeums formed a bump-like or columnar *** mass of yolk-rich cells occupied the lumen,blocked the opening and even turned inside out of the *** the ventral and dorsal fins in trunks and tails became narrow or even disappeared *** results suggest that great changes of histology took place corresponding to the unique *** gut tissue was poorly differentiated,which led to the failed elongation of the guts and subsequently the enlarged *** enlarged proctodaeums were due to the undifferentiation of inner layer,the expansion of outer epidermal part and the absence of fins around *** brief,the histological observations provided insights into the reason of the unique external malformations in some degree.

关键词： Xenopus tropicalis tributyltin teratogenicity histology proctodaeum fin

Analysis of photoluminescence behavior of high-quality single-layer MoS2

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Nano Research 2019年第7期12卷 1619-1624页

作者： Lu Xu Liyun Zhao Yunsong Wang Mingchu Zou Qing Zhang Anyuan cao Department of Materials Science and Engineering College of Engineering Peking UniversityBeijing 100871China

The ability to tailor and enhance photoluminescence (PL) behavior in two-dimensional (2D) transition metal dichalcogenides (TMDCs) such as molybdenum disulfide (MoS2) is significant for pursuing optoelectronic *** achieve this,it has been essential to obtain high-quality single-layer MoS2 and fully explore its intrinsic PL ***,we fabricate single-layer MoS2 by a thermal vapor sulfurization method in which a pre-deposited molybdenum trioxide (MoO3) thin film is sulfurized over a short period (for several minutes) to turn into *** as-grown MoS2 crystals show quite strong PL,which is about one order of magnitude higher than that of chemical-vapor-deposited ***- and power-dependent spectroscopy measurements disclose the apparent influence of sulfur (S) vacancies on the PL behavior and the noticeable free-to-bound exciton recombinations in the luminescence *** fact that PL intensity of the sample in vacuum sharply lowered down relative to in air reveals that the high PL is facilitated by molecular adsorption on S vacancies in *** multi-channel decay processes coupled with S vacancies are revealed in the time-resolved PL *** our work,single-layer MoS2 with high PL is synthesized and its defect-induced PL features are analyzed,which is of great importance for developing advanced nano-electronics and optoelectronics based on 2D structures.

关键词： MoS2 photoluminescence thermal vapor sulfurization S vacancy

Influence of an equimolar amount of aluminium and phosphorus on spectroscopic properties of neodymium under local phosphorus environment in silica glass

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Journal of Rare Earths 2018年第10期36卷 1030-1035页

作者： Yabin cao Fan Wang Chongyun Shao Yu Yue Lili Hu Chunlei Yu Key Laboratory of Materials for High Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China University of Chinese Academy of Sciences Beijing 100049 China

To exhibit large emission cross sections of Nd in silica glass, Nd surroundings were regulated in AI/P codoped silica glass prepared by our multi-step method. The influence of an equimolar amount of AI and P on spectroscopic properties was studied under the local phosphorus coordination environment of *** uniformity of composition distribution was characterized by energy dispersion spectra（EDS） and the coordination environment of Nd ions was characterized by the electron paramagnetic resonance（EPR）spectra. The results indicate that the composition distribution is of high uniformity and Nd has a stronger interaction with P atoms than AI atoms regardless of Al/P molar ratio. Local phosphorus coordination environment of Nd ions in silica glass is achieved. Large σ（em） can be achieved when Al or P is excessive,and larger σ（em） is more likely achieved when P is much more than Al. This work brings new possibilities for obtaining large stimulated cross sections of Nd in silica glass.

关键词： Al/P co-doped silica glass Nd Multi-step method EPR Rare earths

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配电网故障计算的通用方法

中国电机工程学报 1999年第7期19卷 41-44,48页

作者：曹国臣张弓宋家骅柳焯东北电力学院研究生部哈尔滨工业大学电气工程系

文章以网络支路阻抗方程作为电网数学模型，系统地研究了配电网故障计算的通用方法。根据配电网少环的结构特点和固态限流器的工作原理，利用叠加原理、多端口戴维南定理和相序参数变换技术，提出了一种能自动适应网络操作、对故障类型... 详细信息

文章以网络支路阻抗方程作为电网数学模型，系统地研究了配电网故障计算的通用方法。根据配电网少环的结构特点和固态限流器的工作原理，利用叠加原理、多端口戴维南定理和相序参数变换技术，提出了一种能自动适应网络操作、对故障类型没有限制、可计及固态限流器作用的配电网故障计算通用方法。这种方法具有无需形成配电网复数节点导纳参数矩阵或阻抗参数矩阵、极易在计算机上实现等特点。

关键词：配电网固态限流器故障计算数学模型

Primary repair of esophageal atresia gross type C via thoracoscopic magnetic compression anastomosis:A case report

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World Journal of Gastrointestinal Surgery 2023年第12期15卷 2919-2925页

作者： Hong-Ke Zhang Xiao-Quan Li Hong-Xia Song Shi-Qi Liu Fang-hui Wang Jian Wen Mi Xiao A-Ping Yang Xu-Feng Duan Zhen-Zhen Gao Kai-Lun Hu Wei Zhang Yi Lv Xi-hui Zhou Zhen-Jie cao Department of Pediatric Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shannxi ProvinceChina Department of Neonatology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shannxi ProvinceChina Department of Neonatal Surgery Xi’an Children’s HospitalXi’an 710003Shannxi ProvinceChina Department of Anesthesiology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shannxi ProvinceChina Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shannxi ProvinceChina

BACKGROUND Esophageal atresia(EA)is a life-threatening congenital malformation in newborns,and the traditional repair approaches pose technical challenges and are extremely ***,surgeons have been actively investigating new minimally invasive techniques to address this *** compression anastomosis has been reported in several studies for its potential in repairing *** this paper,the primary repair of EA with magnetic compression anastomosis under thoracoscopy was *** SUMMARY A full-term male weighing 3500 g was diagnosed with EA gross type *** magnetic devices used in this procedure consisted of two magnetic rings and several *** fistula ligation and two purse strings were *** magnetic compression anastomosis was then completed *** the primary repair,no additional operation was conducted.A patent anastomosis was observed on the 15th day postoperatively,and the magnets were removed on the 23rd *** leakage existed when the transoral feeding *** Thoracoscopic magnetic compression anastomosis may be a promising minimally invasive approach for repairing EA.

关键词： Congenital esophageal atresia Minimal invasive surgery Thoracoscopic repair Magnetic compression anastomosis Primary repair Case report

Development of metal-recycling technology in waste crystalline-silicon solar cells

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Clean Energy 2023年第3期7卷 532-546页

作者： Dehai Lin Zilin Liu Xiaoduan Li Zixiong cao Rihua Xiong National Institute of Clean and Low Carbon Energy 102211BeijingChina College of Chemical Engineering Zhengzhou University450001HenanChina

Solar energy is currently one of the most promising clean energy sources and the use of solar energy has led to a rapid increase in the number of solar *** one of the fastest-growing electronic wastes,the resource treatment of solar cells at the end of their life should not be *** review discusses the trend for the market development of crystalline-silicon solar cells and analyzes their physical structure and *** also discusses the current domestic and international recycling technologies for crystalline-silicon solar cells,including manual dismantling,inorganic acid dissolution,the combination of heat-treatment and chemical methods,and organic solvent *** shortcomings of the above treatment methods are discussed and some views on the recycling of waste crystalline-silicon solar cells are *** suggestions for the green and sustainable development of crystalline-silicon solar cells are put forward by comparing different treatment-recycling processes.

关键词： waste solar cells crystalline silicon metal recycling dismantling

Method of lateral image reconstruction in structured illumination microscopy with super resolution

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Journal of Innovative Optical Health Sciences 2016年第3期9卷 4-18页

作者： Qiang Yang Liangcai cao Hua Zhang Hao Zhang Guofan Jin State Key Laboratory of Precision Measurement Technology and Instruments Tsinghua University Beijing 100084P.R.China

The image reconstruction process in super-resolution structured illumination microscopy(SIM)is *** structured pattern is generated by the interference of two Gaussian beams to encode undetectable spectra into detectable region of *** parameters estimation of the structured pattern,the encoded spectra are computationally decoded and recombined in Fourier domain to equivalently increase the cut-off frequency of microscope,resulting in the extension of detectable spectra and a reconstructed image with about two-fold enhanced *** di®erent methods to estimate the initial phase of structured pattern are compared,verifying the auto-correlation algorithm a®ords the fast,most precise and robust *** artifacts sources and detailed reconstruction°owchart for both linear and nonlinear SIM are also presented.

关键词： Microscopy structured illumination super-resolution image reconstruction

Optimal Expansion Planning Model for Integrated Energy System Considering Integrated Demand Response and Bidirectional Energy Exchange

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1449-1459页

作者： Wenkai Dong Zhigang Lu Liangce He Jiangfeng Zhang Tao Ma Xiaobo cao College of Electrical Engineering Yanshan UniversityQinhuangdao 066004China Department of Automotive Engineering Clemson UniversityGreenvilleSC 29607US State Grid Xiong'an New Area Electric Power Supply Company Xiong'an New Area 071000China

The challenges of energy shortage and environmen-tal protection motivate people to take various measures to use energy wisely,and integrated energy systems are such a measure to tackle this *** this paper,an optimal expansion planning model for an integrated energy system consisting of power grid,gas network and multiple energy hubs is proposed,where the planning objective is to minimize operational fuel cost and capital investment cost covering carbon capture equipment and energy hubs among *** demonstrate the advantage of the proposed planning model,six case studies are investigated,and 13.47%annual cost savings can be achieved compared with the baseline planning scenario,which does not consider bidirectional energy exchange and integrated demand response *** Terms-Bidirectional energy exchange,energy hubs,integrated energy system,integrated demand response.

关键词： Bidirectional energy exchange energy hubs integrated energy system integrated demand response.

Verification of a fusion neutron diagnostic Bonner sphere spectrometer on measurement of a ^(241)Am–Be neutron source

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Nuclear Science and Techniques 2016年第6期27卷 125-129页

作者： Jing cao Chun-Yu Jiang Qing-Wei Yang Ze-Jie Yin State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science andTechnology of ChinaHefei 230026China Southwestern Institute of Physics Chengdu 610041China

A Bonner sphere spectrometer(BSS) was developed for neutron diagnostic on HL_2A *** contains eight polyethylene spheres embedded with SP9~3 He proportional *** setting up on the Tokamak experimental hall,a verification experiment was arranged on a^(241)Am–Be neutron source to test its spectrometry *** neutron response functions were calculated by Monte Carlo code Geant4 to simulate the real measurement *** least square method,the neutron spectrum was finally unfolded on log domain from0.1 e V to 11 Me *** has a remarkable consistency to the ISO 8529-1 standard^(241)Am–Be neutron *** shows that the BSS is effective and reliable for neutron spectrum determination.

关键词：中子诊断中子源光谱仪计量检定聚变托卡马克装置托卡马克实验 Geant4