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具有年龄结构的食蚜蝇-蚜虫捕食模型

生态学报 2010年第20期30卷 5702-5708页

作者：霍丽慧赵惠燕郑立飞吴养会西北农林科技大学理学院陕西杨凌712100 西北农林科技大学植物保护学院陕西杨凌712100

现有的具有年龄结构的捕食-食饵模型总是假设只有成年捕食者捕食猎物,这与实际情况不符。建立了一个幼年捕食者捕食食饵的具有年龄结构的食蚜蝇-蚜虫模型,应用微分方程定性理论,讨论了系统平衡点及其稳定性:其中平衡点E1(0,0,0)为不稳定... 详细信息

现有的具有年龄结构的捕食-食饵模型总是假设只有成年捕食者捕食猎物,这与实际情况不符。建立了一个幼年捕食者捕食食饵的具有年龄结构的食蚜蝇-蚜虫模型,应用微分方程定性理论,讨论了系统平衡点及其稳定性:其中平衡点E1(0,0,0)为不稳定的;满足一定条件时,边界平衡点E2(K,0,0)及正平衡点E3(x*,y1*,y2*)为局部渐近稳定的;且应用一致持续生存理论得到了系统永久持续生存的条件,为有害生物综合治理提供了理论依据。

关键词：持续生存稳定性年龄结构种群

Cu2+对缢蛏稚贝的急性毒性及对抗氧化酶活力和丙二醛含量的影响

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中国水产科学 2012年第1期19卷 182-187页

作者：刘浩明董迎辉霍礼辉林志华王昭萍中国海洋大学水产学院浙江万里学院生物与环境学院

研究了Cu2+对缢蛏稚贝的急性毒性并进行安全评价;根据96 h LC50值设定10、30、40μg/L 3个Cu2+质量浓度梯度进行暴露实验,以缢蛏(Sinonovacula constricta Lamark)稚贝软体组织中过氧化氢酶(CAT)、超氧化物歧化酶(SOD)活性和脂质过氧化... 详细信息

研究了Cu2+对缢蛏稚贝的急性毒性并进行安全评价;根据96 h LC50值设定10、30、40μg/L 3个Cu2+质量浓度梯度进行暴露实验,以缢蛏(Sinonovacula constricta Lamark)稚贝软体组织中过氧化氢酶(CAT)、超氧化物歧化酶(SOD)活性和脂质过氧化物丙二醛(MDA)含量为指标,研究Cu2+污染对缢蛏稚贝的毒性作用。结果表明,Cu2+对缢蛏稚贝96 hLC50为309.742μg/L;不同浓度Cu2+胁迫下,96 h内缢蛏稚贝抗氧化酶(CAT、SOD)活力发生显著的变化(P<0.05),除最高组40μg/L在48 h时CAT活力被显著抑制(P<0.05)外,96 h内绝大部分时间点与沙滤海水对照组相比,各暴露组抗氧化酶(CAT、SOD)活性处于诱导状态;96 h内各暴露组缢蛏稚贝丙二醛(MDA)含量均明显高于对照组(P<0.05)。研究认为,CAT、SOD活性及MDA含量变化可反映缢蛏稚贝受Cu2+伤害的程度,可用作缢蛏安全性风险评价的参考依据。

关键词： Cu2+ 缢蛏稚贝 CAT SOD MDA

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酒精对小鼠颗粒细胞功能的影响（英文）

酒精对小鼠颗粒细胞功能的影响（英文）

陕西省毒理学会新时代环境与健康学术会议暨第四届会员代表大会

作者： Wanlu Xu lihui huo Jingjing Li Chunli Xu Shuang Wang Yanhong Yang Chuang Liu Xiaomin Zheng Xiuliang Feng Xingrong Yan Shaanxi Key Laboratory for Animal Conservation Key Laboratory of Resource Biology and Biotechnology in Western ChinaMinistry of EducationCollege of Life ScienceNorthwest University Department of Experimental Surgery of Xijing Hospital the Fourth Military Medical University Department of Obstetrics & Gynecology Tangdu Hospitalthe Fourth Military Medical University Key Laboratory of Fertility Preservation and Maintenance Ministry of Education Institute of Biomedicine PharmacologyBiomedicum HelsinkiUniversity of Helsinki

Alcohol is an important compound used in food,agriculture,and *** this study we investigated the effect of alcohol on oocyte quality in mice by exposing animals for different duration times during an estrous ***-oocyte complexes(COCs) were collected from mice following pregnant mare serum gonadotropin(PMSG)-and human chorionic gonadotropin(hCG)-induced *** number,E level in serum,and parthenogenetic embryo development in vitro were *** gene expression,mitochondrial membrane potential,and reactive oxygen species(ROS) levels in the cumulus were also *** results showed that acute exposure to alcohol did not affect ovulation time(p> 0.05).Blasocyst formation rate in vitro was significantly improved after 1 and 2 days of alcohol exposure(p <0.01).Mitochondrial membrane potential was significantly increased after 1-4 days of alcohol exposure(p <0.05),but decreased after 5 days(p <0.05).ROS levels remained relatively low after 2,3,and 4 days of exposure(p <0.05) and significantly increased after 6 days(p <0.05).In addition,Alcohol altered the expression of mitochondrial and nuclear genes in the *** together,our data suggest that acute exposure to alcohol affects oocyte quality by influencing the function and gene expression in the *** results underscore potential implications for the development of human reproductive therapeutics.

关键词： Oocyte quality alcohol mitochondria mice parthenogenesis

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高脂对小鼠颗粒细胞功能的影响（英文）

高脂对小鼠颗粒细胞功能的影响（英文）

陕西省毒理学会新时代环境与健康学术会议暨第四届会员代表大会

作者： Jingjing Li Shuang Wang Bo Wang Chunli Xu lihui huo Wanlu Xu Jun hao Yanping Duan Xiaomin Zheng Jinlian Hua Xiuliang Feng Xingrong Yan College of life sciences in Northwest university Department of Experimental Surgery of Xijing Hospital Fourth Military Medical University Key Laboratory of Fertility Preservation and Maintenance Ministry of Education Institute of Biomedicine PharmacologyBiomedicum HelsinkiUniversity of Helsinki College of Veterinary Medicine Northwest A & F University

Human health has been compromised by obesity in the world,in which germ cell could be *** is one of specific germ cells,which supports the early embryonic development in *** investigate the relation between high fat diet and oocyte quality,mice were bred with high fat and normal diet to use as treated and control groups,***-oocyte complexs(COCs) were collected from treated and normal *** of COCs was observed by transmission electron *** level of genes for mitochondrial and nuclear functions in cumulus were identified by *** quality was evaluated by artificial *** results showed that the number of ovulated oocytes in treated group was more than control group(p<0.05).Efficiency of parthenogenetic embryonic development in vitro in treated group was also more than that of control group(p<0.05).The expression level of genes for mitochondrial functions in cumulus was lower than than of control(p<0.05),excluding CoxⅡ.E2 level in serum and expression level of p450 arom in treated group were higher than that of control(P<0.05).But lipoids in cumulus for treated group was significantly more than that of control group and the cristae of mitochondria was more clear in treated *** and ROS ’level for cumulus in treated group were higher than that of control group(p<0.05),and mitochondrial membrane potential level for cumulus in treated group was lower than that of control *** results demonstrated that parthenogenetic embryonic development in vitro could be improved by high fat diet,but mitochondrial functions were impaired,which will be used for references for human in diet intake.

关键词： mouse high fat diet oocyte parthenogenesis embryo obesity

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基于城市道路建设对周边环境影响的评价研究

山西建筑 2019年第17期45卷 118-119页

作者：崔世斌巩舜妹霍礼辉宿州学院资源与土木工程学院

通过对宿州市二徐路周围地质环境进行勘探并查阅相关资料,对二徐路沿线地质环境以及道路工程建设强度进行分析探讨。选取地质构造、岩性组合、地下水、高填深挖、崩塌滑坡等10个因素。从地质稳定性、水文地质、工程活动强度和地质灾害... 详细信息

通过对宿州市二徐路周围地质环境进行勘探并查阅相关资料,对二徐路沿线地质环境以及道路工程建设强度进行分析探讨。选取地质构造、岩性组合、地下水、高填深挖、崩塌滑坡等10个因素。从地质稳定性、水文地质、工程活动强度和地质灾害四个方面建立了层次分析过程模型,利用K-Means聚类的方法建立评价指标体系,评价了宿州市二徐路施工强度对周边地质环境的影响。

关键词：道路工程地质环境影响评价研究 K-Means聚类

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淮河橄榄蛏蚌繁殖类型与性腺发育观察

中国水产科学 2020年第10期27卷 1156-1166页

作者：闻海波孙光兴丁图强吕国华徐跑马学艳徐东坡王林张呈祥霍礼辉金武华丹顾若波中国水产科学研究院淡水渔业研究中心农业农村部淡水鱼类遗传育种与养殖生物学重点开放实验室南京农业大学无锡渔业学院中国水产科学研究院淡水渔业研究中心中美淡水贝类种质资源保护及利用国际联合实验室阜阳市水产管理局

对淮河橄榄蛏蚌(Solenaia oleivora Heude)繁殖类型和性腺发育特征进行了系统的研究。结果表明,橄榄蛏蚌为短期孵育型,繁殖期从3月至6月初, 3—5月为繁殖高峰期,发现的最小怀幼雌蚌为2+龄;雌蚌内外2对鳃丝均可作为育儿囊,属于外鳃类的... 详细信息

对淮河橄榄蛏蚌(Solenaia oleivora Heude)繁殖类型和性腺发育特征进行了系统的研究。结果表明,橄榄蛏蚌为短期孵育型,繁殖期从3月至6月初, 3—5月为繁殖高峰期,发现的最小怀幼雌蚌为2+龄;雌蚌内外2对鳃丝均可作为育儿囊,属于外鳃类的四生型,一次怀幼数量在134.9万～402.1万只。以雌蚌怀幼为第一判断标准,并结合卵巢组织切片,确认中国橄榄蛏蚌为一个繁殖周期内多次排卵繁殖类型。雌雄生长未见显著差异。橄榄蛏蚌性腺发育可分为增殖期、生长期、成熟期、排放期及休止期5个时期,卵巢和精巢发育基本同步。组织切片和扫描电镜均显示,卵母细胞通过直径约5μm的卵柄与滤泡壁相连;早期卵母细胞(直径小于17μm)表面无细胞膜,而后期卵母细胞(约40μm)表面出现明显的卵黄膜。橄榄蛏蚌精子为鞭毛型,头颈部呈子弹头形,最宽约2μm;受精卵表面存在明显的卵膜孔,直径约1μm,表明精子不能通过卵膜孔全部进入卵母细胞而受精。本研究成果为实现橄榄蛏蚌的人工繁育及利用奠定了科学基础,并为其他珍稀濒危蚌类的繁育保护提供借鉴。

关键词：橄榄蛏蚌繁殖类型性腺发育怀幼雌蚌卵膜孔

基于YOLOv5s的CCTV排水管道缺陷识别方法研究

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市政技术 2024年第3期42卷 230-236页

作者：韩崔燕周扬汪犁辉雷豁姚丹梁卫清武汉众智鸿图科技有限公司湖北武汉430223

城市排水管道常出现堵塞、老化、腐蚀、破损等情况,严重影响城市的健康发展和市民的正常生活。通过分析当前排水管道缺陷识别方法的局限性,构建了基于YOLOv5s的排水管道缺陷识别模型,对10种常见的排水管道缺陷进行学习、训练和验证,通... 详细信息

城市排水管道常出现堵塞、老化、腐蚀、破损等情况,严重影响城市的健康发展和市民的正常生活。通过分析当前排水管道缺陷识别方法的局限性,构建了基于YOLOv5s的排水管道缺陷识别模型,对10种常见的排水管道缺陷进行学习、训练和验证,通过数据收集、数据处理、模型训练和目标检测4个步骤,完成了排水管道缺陷的智能识别。实验结果表明,排水管道缺陷识别模型的多类别平均精确度达到了85.42%(其中错口、异物穿入、渗漏(附着型)和破裂4种缺陷识别的平均精确度分别达到了93.6%、91.7%、91.7%和91.3%),验证了该模型的有效性。另外,YOLOv5s模型相较于Faster R-CNN模型,多类别平均精确度更高,并且具有模型内存更小、检测速度更快的明显优势,大幅提升了模型的工程适用性。

关键词：排水管道 CCTV 缺陷识别 YOLOv5s

Matching and Simulation of Power Parameters of Electric Transporter based on Cruise Software

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International Journal of Plant Engineering and Management 2021年第2期26卷 106-117页

作者： huo Xukun MA Xiaolu LIU Yan WU lihui School of Mechanical and Electrical Engineering Henan University of TechnologyZhengzhou 450001China Hunan Yingchun Spring Intelligent Equipment Co. Ltd.Ningxiang 410006Hu′nanChina

In view of the characteristics of warehouse or freight yard carrying out transfer and loading conditions,the performance parameter matching of the power system of an electric transfer vehicle was studied,and the driving motor and power battery of the key components of the vehicle were reasonably *** software was used to simulate the loading process of the *** results show that the performance design of the power system of the electric transport vehicle and its key components is reasonable,meeting the requirements of maximum speed,climbing performance and starting driving performance,and providing a reference and credible basis for the design of the power system of the vehicle.

关键词： electric transfer vehicle power parameter matching simulation verification

An Eco-Hydrology Wireless Sensor Demonstration Network in High-Altitude and Alpine Environment in the Heihe River Basin of China

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Wireless Sensor Network 2012年第5期4卷 138-146页

作者： Yaonan Zhang lihui Luo Jiuyuan huo Wenpin Zhu Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China

The emerging of Wireless Sensor Network (WSN) technology has brought new opportunities for data intensive observation in eco-hydrological research and environment monitoring. To make up for the insufficiencies of space observation data for models in eco-hydrology processes research of inland river basin which constrain the construction of accurate modeling and simulation, a sub-basin of the Heihe River Basin named Hulugou has been selected to perform the deployment and research for wireless sensor network from the perspective of eco-hydrology. In this paper, we discussed the system framework, the demonstration research area, the deployment of sensor nodes and the network topology of wireless sensor network. Finally, the study has summarized existing problems and experiences of wireless sensor network in these eco-hydrological applications and the available researches in hard environment. In the future, we will deploy a large number of sensor nodes in the long-term fine-grained eco-hydrological elements observing environment to form lots of homogeneous or heterogeneous wireless sensor networks.

关键词： Wireless Sensor Network Eco-Hydrology Intensive Observation Wireless Transmission Environmental Monitoring