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Engineering of SnO_(2)/TiO_(2) heterojunction compact interface with efficient charge transfer pathway for photocatalytic hydrogen evolution

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Chinese Chemical Letters 2023年第1期34卷 483-486页

作者： Hongli Wang Jianan Liu Xudong Xiao Huiyuan Meng Jie Wu chuanyu guo Mang Zheng Xiaolei Wang Shien guo Baojiang Jiang Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150000China School of Safety Engineering Heilongjiang University of Science and TechnologyHarbin 150022China Institute of Advanced Materials(IAM) College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022China

Fabricating an efficient charge transfer pathway at the compact interface between two kinds of semiconductors is an important strategy for designing hydrogen production heterojunction *** this work,we prepared a compact,stable and oxygen vacancy-rich photocatalyst(SnO_(2)/TiO_(2) heterostructure)via a simple and reasonable in-situ synthesis ***,SnCl_(2)–2H_(2)O is hydrolyzed on the TiO_(2) *** the pyrolysis process,SnO_(2) nanoparticles(5 nm)were dispersed on the surface of ultrathin TiO_(2) nanosheets ***,the heterojunction system can offer abundant oxygen vacancies,which can act as active sites for catalytic ***,the interfacial contact of SnO_(2)/TiO_(2) grading semiconductor oxide is uniform and tight,which can promote the separation and migration of photogenerated *** shown in the experimental results,the hydrogen production rate of SnO_(2)/TiO_(2) is 16.7 mmol h^(-1)g^(-1)(4.4 times higher than that of TiO_(2)),which is owing to its good dynamical *** work demonstrates an efficient strategy of tight combining SnO_(2)/TiO_(2) with abundant oxygen vacancies to improve catalytic efficiency.

关键词： Photocatalysis SnO_(2)-TiO_(2)heterojunction Solvent thermal Charge transfer Hydrogen evolution

基于概率函数触发的锂电池模组热失控蔓延建模与分析方法研究

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汽车工程 2024年第8期46卷 1422-1430页

作者：禹进郭川钰于佳佳重庆交通大学航空学院重庆400074 绿色航空能源动力重庆市重点实验室重庆401120 重庆大学能源与动力工程学院重庆400044

针对现有数值模拟方法难以准确反映锂电池热失控触发温度概率性变化的问题,提出基于概率函数触发的锂电池模组热失控蔓延建模方法。该方法首先通过统计分析实际锂电池热失控温度区间和数量分布,以此计算出各温度区间热失控触发概率,然... 详细信息

针对现有数值模拟方法难以准确反映锂电池热失控触发温度概率性变化的问题,提出基于概率函数触发的锂电池模组热失控蔓延建模方法。该方法首先通过统计分析实际锂电池热失控温度区间和数量分布,以此计算出各温度区间热失控触发概率,然后基于提出的概率触发模拟器实现仿真过程概率触发,采用实验数据对该方法的有效性进行验证,最后对概率函数触发条件下的热蔓延路径及其概率进行分析。结果表明,存在包括跳跃式热失控现象在内的多种热失控蔓延路径,其中顺序热失控的概率最高,而跳跃式热失控的概率最小。所提出的方法为研究锂电池模组热失控蔓延过程的概率性提供有效的研究工具和分析方法。

关键词：锂电池模组跳跃式热失控概率热蔓延函数触发

An insulin-like growth factor homolog of Singapore grouper iridovirus (SGIV) modulates cell proliferation, apoptosis and enhances viral replication

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An insulin-like growth factor homolog of Singapore grouper i...

基于玉米冠层原位监测的全生育期叶色建模及其应用

中国水产学会鱼病专业委员会2013年学术研讨会

作者： Yang Yan Huachun Cui chuanyu guo Xiaohong Huang Jingguang Wei Qiwei Qin Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of Sciences Department of Medicine University of Alabama at Birmingham

Insulin-like growth factors(IGFs)play crucial roles in regulating cell differentiation,proliferation and *** this study,a novel IGF homologue gene(IGF-like)encoded bySingapore grouper iridovirus(SGIV)ORF062R(termedSGIV–IGF),was cloned and *** coding region of SGIV–IGF is 771 bp in length,with a variable number of tandem repeats(VNTR)locus at the 3’-*** cloned one isoform of this novel gene,582 bp in length,containing the predicted IGF domain and 3.6 copy numbers of the 27 bp repeat ***–IGFwas an early transcribed gene during viral infection,and distributed predominantly in thecytoplasm with a diffused granular ***,overexpression of SGIV–IGF wasable to promote the growth of grouper embryonic cells(GP cells)by promoting G1/S phasetransition,which was,at least partially,dependent on its 3’-end VNTR ***,viraltitre assay and real-time quantitative PCR(RT-qPCR)analysis proved that SGIV–IGF couldpromote SGIV replication in grouper *** addition,overexpression of SGIV–IGF mildlyfacilitated apoptosis in SGIV-infected non-host fathead minnow(FHM)***,our studydemonstrated a novel functional gene of SGIV which may regulate viral replication and cellularprocesses through multiple mechanisms that appear to be cell type-dependent.

关键词： Insulin-like growth factor Singapore grouper iridovirus variable number of tandem repeats cell growth replication.

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农业工程学报 2017年第16期33卷 188-195页

作者：杜建军袁杰王传宇郭新宇北京市农林科学院北京农业信息技术研究中心北京100097 数字植物北京重点实验室北京100097 首都师范大学信息工程学院北京100048

针对田间玉米冠层叶色变化难以定量描述问题,该文利用田间原位冠层监测系统,在摄像机自动曝光模式下连续采集多个玉米品种的冠层图像,揭示了复杂天气条件对图像和玉米冠层颜色的影响。利用概率密度统计分析方法分别计算玉米6个关键生育... 详细信息

针对田间玉米冠层叶色变化难以定量描述问题,该文利用田间原位冠层监测系统,在摄像机自动曝光模式下连续采集多个玉米品种的冠层图像,揭示了复杂天气条件对图像和玉米冠层颜色的影响。利用概率密度统计分析方法分别计算玉米6个关键生育期的冠层亮度-色度分布,并针对冠层色度具有明确变化趋势且分离度较高的冠层亮度区间,建立了全生育期玉米冠层叶色模型。进而,基于该模型建立了适合不同玉米生育期的冠层图像自动分割方法,将玉米全生育期的冠层图像分割精度提升到82.6%,并揭示了不同品种玉米在叶片发育过程中冠层叶色与叶龄的相关性,利用登海605和农大108的冠层叶色预测出的生育期叶龄均方根误差RMSE(root mean squared error,RMSE)分别为1.14和1.41叶。试验结果表明,该文建立的玉米冠层叶色模型能够较好描述玉米关键生育期的冠层叶色变化规律,对玉米冠层图像分割、生育期估计、玉米品种表型鉴定具有重要意义。

关键词：图像分割图像分析颜色模型玉米冠层表型性状特征提取机器视觉

磷酸铁锂电池在储能预制舱中的火灾模拟及其消防应急技术仿真研究

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高电压技术 2023年第12期49卷 5187-5195页

作者：禹进郭川钰张伟阔刘念蒋旭辉罗樟重庆交通大学航空学院重庆400074 绿色航空能源动力重庆市重点实验室重庆401120 华电电力科学研究院有限公司北京100031 中国电建集团重庆工程有限公司重庆400060

储能电站火灾事故频发,其消防安全问题日益突出,急需对其开展深入研究。为了建立可靠的电池热失控模型,首先提出了改良二分法来修正热释放速率,从而保证了锂电池及其在预制舱中模拟的精确性。然后基于实际储能电池柜和预制舱尺寸建立1:... 详细信息

储能电站火灾事故频发,其消防安全问题日益突出,急需对其开展深入研究。为了建立可靠的电池热失控模型,首先提出了改良二分法来修正热释放速率,从而保证了锂电池及其在预制舱中模拟的精确性。然后基于实际储能电池柜和预制舱尺寸建立1:1几何模型,开展了火灾事故模拟,发现了火灾事故中初始升温、火焰生成和火焰蔓延3个阶段及其特征参数变化。最后开展了储能预制舱中火灾事故的消防应急技术研究,分析了不同预警方案的响应快慢,并对预制舱细水雾消防喷淋系统的设计优化进行了研究。结果表明,红外光束线型感烟探测器能最快速地对火灾进行预警反应,而预制舱细水雾消防系统存在多个最优方案。研究成果既可为锂电池热失控的数值模拟提供合理方法及理论指导,也能为未来储能电站的安全设计及防护提供理论数据支撑。

关键词：磷酸铁锂电池热失控储能电站预制舱消防应急技术热蔓延

Image acquisition system for agricultural context-aware computing

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International Journal of Agricultural and Biological Engineering 2014年第4期7卷 75-80页

作者： Xiao Boxiang Wang chuanyu guo Xinyu Wu Sheng Beijing Research Center for Information Technology in Agriculture Beijing 100097China National Engineering Research Center for Information Technology in Agriculture Beijing 100097China

Context-aware computing is a new mode originated from ubiquitous *** emergence brings a substantial change to traditional computing and related *** is a pervasive tool for context awareness.A large number of applications are developed based on images *** this paper,an image acquisition system is presented for agricultural context-aware *** potential use of the system includes production evaluation,precise management and assistant *** system includes four modules:the camera system,the control system,mechanism,and *** system can be easily installed in target crop *** camera system is composed of a binocular stereo camera and a color *** cubic images and a corresponding texture image are collected for each plant in the process of data *** accessorial software system is developed to control and manage the capture *** show that the presented system is effective for image acquisition of agricultural context-aware computing.

关键词： image acquisition agriculture context-aware computing

MVS-Pheno:A Portable and Low-Cost Phenotyping Platform for Maize Shoots Using Multiview Stereo 3D Reconstruction

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Plant Phenomics 2020年第1期2卷 40-56页

作者： Sheng Wu Weiliang Wen Yongjian Wang Jiangchuan Fan chuanyu Wang Wenbo Gou Xinyu guo Beijing Research Center for Information Technology in Agriculture Beijing 100097China National Engineering Research Center for Information Technology in Agriculture Beijing 100097China Beijing Key Lab of Digital Plant Beijing 100097China

Plant phenotyping technologies play important roles in plant research and *** phenotypes of individual plants can guide the optimization of shoot architecture for plant breeding and are useful to analyze the morphological differences in response to environments for crop ***,high-throughput phenotyping technologies for individual plants grown in field conditions are urgently needed,and MVS-Pheno,a portable and low-cost phenotyping platform for individual plants,was *** platform is composed of four major components:a semiautomatic multiview stereo(MVS)image acquisition device,a data acquisition console,data processing and phenotype extraction software for maize shoots,and a data management *** platform’s device is detachable and adjustable according to the size of the target *** sequences for each maize shoot can be captured within 60-120 seconds,yielding 3D point clouds of shoots are reconstructed using MVS-based commercial software,and the phenotypic traits at the organ and individual plant levels are then extracted by the *** correlation coefficient(R^(2))between the extracted and manually measured plant height,leaf width,and leaf area values are 0.99,0.87,and 0.93,respectively.A data management system has also been developed to store and manage the acquired raw data,reconstructed point clouds,agronomic information,and resulting phenotypic *** platform offers an optional solution for high-throughput phenotyping of field-grown plants,which is especially useful for large populations or experiments across many different ecological regions.

关键词： breeding Stereo yielding

棉花DEELA基因干扰载体的构建及转化研究

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石河子大学学报（自然科学版） 2011年第4期29卷 397-400页

作者：袁英歌郭传宇高朝宝张定国彭明崔百明石河子大学农学生物技术重点实验室石河子大学生命科学学院石河子832003

本研究联合了棉花DELLA蛋白基因GhGAI1和GhGAI2的部分序列构建了在棉花纤维细胞中优势表达hpRNA的表达载体。通过农杆菌介导法转化新疆主栽棉花品种新陆早33号,在其不同生长期对其不同组织部位进行大田转化,主要侵染方法有茎尖浸润法、... 详细信息

本研究联合了棉花DELLA蛋白基因GhGAI1和GhGAI2的部分序列构建了在棉花纤维细胞中优势表达hpRNA的表达载体。通过农杆菌介导法转化新疆主栽棉花品种新陆早33号,在其不同生长期对其不同组织部位进行大田转化,主要侵染方法有茎尖浸润法、花苞注射法和花喷洒法,以研究不同方法的转化效率。对T1代植株进行卡那霉素筛选及PCR检测,结果表明这3种侵染方法均获得了抗卡那霉素的转化植株,而只在通过花喷洒法和花苞注射法获得的抗性植株中检测到目的基因。

关键词：棉花干扰载体农杆菌介导转化转基因植株

Three-Dimensional Modeling of Maize Canopies Based on Computational Intelligence

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Plant Phenomics 2024年第2期6卷 349-363页

作者： Yandong Wu Weiliang Wen Shenghao Gu Guanmin Huang chuanyu Wang Xianju Lu Pengliang Xiao Xinyu guo Linsheng Huang National Engineering Research Center for Agro-Ecological Big Data Analysis&Application Anhui UniversityHefei 230601China Information Technology Research Center Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China Beijing Key Lab of Digital Plant National Engineering Research Center for Information Technology in AgricultureBeijing 100097China Nongxin Science&Technology(Beijing)Co. LtdBeijing 100097China

The 3-dimensional(3D)modeling of crop canopies is fundamental for studying functional-structural plant *** studies often fail to capture the structural characteristics of crop canopies,such as organ overlapping and resource *** address this issue,we propose a 3D maize modeling method based on computational *** initial 3D maize canopy is created using the t-distribution method to reflect characteristics of the plant architecture.

关键词： intelligence modeling based canopies computational dimensional maize three