检索结果-南通市图书馆

在工程教育认证背景下思政融入实验教学的改革与探索

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

吉林化工学院学报 2024年第2期41卷 28-31页

作者：白鹭吴春英谷风吉林化工学院资源与环境工程学院吉林吉林132022

在工程认证背景下培养环境工程专业人才的需要,分析环境工程实验课程现状,以学生为中心的教学模式,改进实验教学内容和考核方法,实行线上线下结合的实验教学,融入思政元素,提高实验课的思政水平,培养出适应时代发展的高素质的、综合的... 详细信息

在工程认证背景下培养环境工程专业人才的需要,分析环境工程实验课程现状,以学生为中心的教学模式,改进实验教学内容和考核方法,实行线上线下结合的实验教学,融入思政元素,提高实验课的思政水平,培养出适应时代发展的高素质的、综合的、创新的人才。

关键词：工程认证课程思政实验改革

在线全文

学校读者我要写书评

暂无评论

国内外胶囊内镜重点创新企业专利对比分析

健康发展与政策研究 2024年第3期27卷 254-259页

作者：宋捷金春林吴春莹瞿丽曼杨山石上海市卫生和健康发展研究中心(上海市医学科学技术情报研究所) 上海200031 上海图书馆(上海科学技术情报研究所) 上海200031

目的分析国内外胶囊内镜(capsule endoscopy,CE)重点创新企业专利发展态势,为我国CE技术领域专利布局和发展方向提供参考。方法选取美敦力、奥林巴斯、安翰科技和金山科技作为国内外CE创新主体代表,基于Derwent Innovation(DI)数据库和I... 详细信息

目的分析国内外胶囊内镜(capsule endoscopy,CE)重点创新企业专利发展态势,为我国CE技术领域专利布局和发展方向提供参考。方法选取美敦力、奥林巴斯、安翰科技和金山科技作为国内外CE创新主体代表,基于Derwent Innovation(DI)数据库和IncoPat全球专利文献数据库,构建CE重点创新企业专利文献数据集,分析4家企业专利发展的特点和差异。结果从专利申请态势看,奥林巴斯全球首个专利申请时间最早(1978年),最高年申请数量为213件。从目标市场区域看,美敦力以美国为主(271件),奥林巴斯以日本为主(954件),安翰科技和金山科技均以中国为主(380件、397件)。从技术重点分布看,美敦力、奥林巴斯、安翰科技、金山科技在图像采集布局的专利数量分别为125件、392件、78件、77件,在磁控胶囊布局的专利数量分别为47件、281件、106件、102件。从近期技术热点分布看,美敦力和奥林巴斯聚焦于消化壁结构成像、图像处理、胶囊小肠镜等领域,安翰科技、金山科技聚焦于靶向给药、电池技术等领域。结论国外胶囊内镜创新企业研发起步早,专利申请数量多,全球化布局广。国内胶囊内镜创新企业虽处于技术积累的成长阶段,但发展势头快,在一些细分领域具有一定赶超趋势。

关键词：胶囊内镜创新企业专利分析对比分析

Study on patterns and chemical features of NO effect on marine phytoplankton growth

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2005年第4期48卷 376-384页

作者： ZHANG Zhengbin LIN Cai LIU chunying XING Lei wu Zhenzhen SUN Feng Institute of Marine Chemistry Ocean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China

This article discusses the patterns of NO effect on marine phytoplankton growth from chemical *** experimental results of four algae,which are Platymonas hal-golandica ***,Platymonas subcordiformis,Skeletonema costatum and Nitzschia closterium farma minutissima,are as follows:(i) In f/2 medium or f/50 medium,the growth of these four algae was obviously promoted or inhibited when nitric oxide of different concentrations was added once or twice each day during the cultivation;(ii) The NO effects on the growth of marine phytoplankton are in normal *** phytoplankton has different optimum NO concentration,which is consistent with the influence of NO on the growth of high plants;(iii) The effect of NO on Platymonas halgolandica ***,which is a food alga,is different from that on the red tide algae Skeletonema costatum and Nitzschia closterium farma *** authors put forward a new opinion that every alga has its own NO threshold *** the above results may provide new clues to understand the formation of red tide.

关键词： nitric oxide (NO), marine phytoplankton (red tide algae and food algae), optimum NO concentration, NO threshold concentration, influencing patterns.

鄂尔多斯盆地奥陶系马家沟组一段—三段构造沉积演化及其油气地质意义

在线全文

学校读者我要写书评

暂无评论

石油勘探与开发 2024年第5期51卷 1040-1052页

作者：钟寿康谭秀成魏柳斌许杰王前平熊鹰武春英杜健笙西南石油大学天然气地质四川省重点实验室成都610500 中国石油集团碳酸盐岩储层重点实验室西南石油大学研究分室成都610500 西南石油大学油气藏地质及开发工程国家重点实验室成都610500 中国石油长庆油田公司勘探开发研究院西安710018 中国石油长庆油田公司第四采气厂西安710016

基于测井、岩心、薄片、地球化学分析,重建鄂尔多斯盆地奥陶系马家沟组一段—三段(简称马一段—马三段)构造-岩相古地理格局,探讨构造沉积演变特征及其油气地质意义。研究表明:①马家沟组底部稳定发育一套穿时的、高自然伽马值段、边缘... 详细信息

基于测井、岩心、薄片、地球化学分析,重建鄂尔多斯盆地奥陶系马家沟组一段—三段(简称马一段—马三段)构造-岩相古地理格局,探讨构造沉积演变特征及其油气地质意义。研究表明:①马家沟组底部稳定发育一套穿时的、高自然伽马值段、边缘相泥质白云岩,分布于怀远运动期构造不整合面之上,具有与早奥陶世弗洛期全球海侵可对比的δ13C正漂移特征;②奥陶系马一段—马二段沉积期全球海平面上升、古陆淹没为水下隆起,形成一隆两坳构造格局,中央隆起首次接受沉积;随后马三段沉积期盆外俯冲挤压、盆内隆坳分异,乌审旗—靖边凸起活化;③构造格局演变对沉积古环境产生显著影响,马一段沉积期向西超覆,东部坳陷内海侵封隔形成大规模盐质蒸发潟湖;马二段沉积期持续海侵并沟通广海,环东部坳陷发育大规模颗粒滩,晚期干化收缩形成小规模蒸发潟湖;马三段沉积期受高地封隔影响,向东侧水体渐次分异分别形成云膏质和盐质蒸发潟湖,同时颗粒滩环凹沿高地展布;④马家沟组底部发育烃源岩,马二段和马三段滩相储层环坡展布,源储配置良好,有利于天然气成藏,具有一定勘探潜力。

关键词：鄂尔多斯盆地奥陶系马家沟组构造演化构造格局古地貌构造沉积分异岩相古地理源储配置

同方期刊数据库

TWO PRIVACY-PRESERVING PROTOCOLS FOR POINT-CURVE RELATION

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 2012年第5期29卷 422-430页

作者： Liu Liang wu chunying Li Shundong School of Computer Science Shaanxi Normal University Computer Department of Qinghai Normal University

Numerous privacy-preserving issues have emerged along with the fast development of Internet, both in theory and in real-life applications. To settle the privacy-preserving problems, secure multi-party computation is essential and critical. In this paper, we have solved two problems regarding to how to determine the position relation between points and curves without revealing any private information. Two protocols have been proposed in order to solve the problems in different conditions. In addition, some building blocks have been developed, such as scalar product protocol, so that we can take advantage of them to settle the privacy-preserving computational geometry problems which are a kind of special secure multi-party computation problems. Moreover, oblivious transfer and power series expansion serve as significant parts in our protocols. Analyses and proofs have also been given to argue our conclusion.

关键词： Secure multiparty computation Privacy-preserving Point-curve relation Power series expansion

Distribution and depositional model of microbial carbonates in the Ordovician middle assemblage,Ordos Basin,NW China

在线全文

学校读者我要写书评

暂无评论

Petroleum Exploration and Development 2021年第6期48卷 1341-1353页

作者： WEI Liubin ZHAO Junxing SU Zhongtang WEI Xinshan REN Junfeng HUANG Zhengliang wu chunying State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu 610059China Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059China Exploration and Development Research Institute of PetroChina Changqing Oilfield Company Xi’an 710018China National Engineering Laboratory for Exploration and Development of Low-Permeability Oil&Gas Fields Xi’an 710018China

Based on outcrop profiles,drilling cores,cast thin sections etc.,the types,microfacies combinations and distribution pattern of microbial carbonates in the Ordovician middle assemblage of the mid-eastern Ordos Basin have been systematically *** middle assemblage of Ordovician in the mid-eastern Ordos Basin has microbial carbonates formed by the calci-fication of cyanobacteria,including microbial biostromes and microbial mounds made of stromatolites,thrombolites,and *** distribution of the carbonates shows obvious“stratum-control”and“regional”*** microbial bio-stromes 2–3 m thick each are controlled by sequence cycles and sedimentary facies changes,and were mainly formed in the tidal flat environment during the depositional stages of the Ma56 and Ma55 *** microbial biostrome in the Ma55 sub-member occurring near the carbonate-evaporite transition interface in the early stage of the transgression is distributed mainly in the Mizhi subsag in the eastern part of the basin;the microbial biostrome in the Ma56 sub-member turns up near the carbonate-evoporite transition zone in ring shape in the east of the central *** ancient landform had noticeable control on the distribution of microbial *** microbial mounds or mound-shoal complexes developing mainly during the de-positional stages of Ma57_Ma510 sub-members are about 15–25 m thick in single layer and distributed largely in the wushenqi-Jingbian *** development model of the microbial carbonate rocks shows that the carbonate-evaporite lithologic transition zone and the wushenqi-Jingbian paleouplift are favorable exploration zones of microbial carbonates in the Ordovician middle assemblages.

关键词： Ordos Basin Ordovician Majiagou Formation microbial carbonates stromatolite thrombolite oncolite deposi-tional model

Biological evaluation on ^(125)I-ADAM as serotonin transporter ligand

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2007年第4期18卷 218-222页

作者： LEI Bei ZHU Junqing LU Chunxiong JIANG Quanfu ZOU Meifeng WANG Songpei LI Xiaomin wu chunying The Key Laboratory of Nuclear Medicine Ministry of Health Jiangsu Institute of Nuclear Medicine Wuxi 214063 China Huashan Hospital Fudan University Shanghai 200040 China

ADAM (2-((2-((dimethylamino)methyl)phenyl)thio)-5-iodophenylamine) is suggested as a promising serotonin transporter (SERT) imaging agent for central nervous system. In this paper, biodistribution studies in rats showed that the initial uptake of 131I-ADAM in the brain was high (1.087%ID at 2 min post-injection), and consistently displayed the highest binding (between 60~240 min post-injection) in hypothalamus, a region known with the highest density of SERT. The specific binding((T/CB)-1) of 131I-ADAM in hypothalamus were 2.94, 3.03 and 3.09 at 60, 120 and 240 min post-injection, respectively. The (T/CB)-1 was significantly blocked by pretreatment with paroxetine, which is known as a serotonin site reuptake inhibitor, while another nonselective competing drug (5HT2A antagonist) Ketanserin, showed no block effect. The rat brain autoradiography and analysis showed that there was a high 131I-ADAM uptake in hypothalamus, the ratio of hypothalamus/cerebellum was significantly reduced from 7.94±0.39 to 1.30±0.56 by pretreatment with paroxetine at 60 min post-injection. Blood clearance kinetics was performed in rats, and the initial half-life of 13.79 min and late half-life of 357.14 min were obtained. The kinetic equation is: C=3.6147e-0.0725t + 1.0413e-0.0028t. The thyroid uptake was 0.009% ID and 1.421% ID at 2 min and 120 min post-injection, respectively, suggesting that in vivo deiodination may be the major route of metabolism. Toxicity trial showed that the dose per kilogram administered to mice was 1000 times greater than that to humans, assuming a weight of 50kg. These data suggest that 131I-ADAM may be useful for SPECT imaging of SERT binding sites in the brain.

关键词：抑郁症 SERT ADAM 放射诊断复合胺生物分布

思维导图联合视频回授法在泌尿系结石留置双J管患者健康教育中的应用效果

在线全文

学校读者我要写书评

暂无评论

微创医学 2024年第1期19卷 85-89页

作者：吴春英钟梅艳张志甫姚丽妮劳晓宇广西壮族自治区民族医院泌尿外科广西南宁市530001

目的探讨思维导图联合视频回授法在泌尿系结石术后留置双J管患者中的应用效果。方法选取300例泌尿系结石术后留置双J管患者作为研究对象,按随机数字表法将其分为观察组和对照组,各150例。对照组患者给予常规护理及健康指导,观察组患者... 详细信息

目的探讨思维导图联合视频回授法在泌尿系结石术后留置双J管患者中的应用效果。方法选取300例泌尿系结石术后留置双J管患者作为研究对象,按随机数字表法将其分为观察组和对照组,各150例。对照组患者给予常规护理及健康指导,观察组患者在对照组的基础上,运用思维导图联合视频回授法进行健康教育。比较两组患者留置双J管知信行水平、并发症发生情况、生活质量及满意度。结果(1)出院后第15天,观察组患者留置双J管相关知识、信念与态度、行为管理得分均高于对照组(均P<0.05)。(2)出院后第15天至拔管前,观察组患者腰部不适、血尿、膀胱刺激征发生率均低于对照组(均P<0.05),且无附壁结石、双J管移位/脱落病例。(3)出院后第15天,观察组患者的各项生活质量评分及总分均高于对照组(均P<0.05)。(4)观察组患者的满意度高于对照组(P<0.05)。结论应用思维导图联合视频回授法对泌尿系结石术后留置双J管患者进行健康教育,可提高患者留置双J管知信行水平,降低并发症发生率,提高患者生活质量和满意度。

关键词：泌尿系结石双J管思维导图视频回授法健康教育

北京市海淀区中小学生营养状况和饮食运动行为分析

在线全文

学校读者我要写书评

暂无评论

首都公共卫生 2024年第3期18卷 172-176页

作者：李涵秋华伟玉黄娜王然徐浩吴春颖北京市海淀区疾病预防控制中心 100094

目的了解北京市海淀区中小学生营养状况和饮食运动行为情况及不同营养状况学生饮食运动行为的差异,为制定干预措施提供科学依据。方法2021年9—11月,采用分层整群随机抽样的方法抽取海淀区1906名中小学学生进行饮食运动行为电子问卷调... 详细信息

目的了解北京市海淀区中小学生营养状况和饮食运动行为情况及不同营养状况学生饮食运动行为的差异,为制定干预措施提供科学依据。方法2021年9—11月,采用分层整群随机抽样的方法抽取海淀区1906名中小学学生进行饮食运动行为电子问卷调查和身高体重等体格检查。结果2021年海淀区中小学生肥胖、超重和消瘦检出率分别为15.48%、17.45%和6.28%。肥胖检出率男生(20.00%)高于女生(10.50%),超重检出率男生(21.12%)高于女生(13.41%),男女生的营养状况比较,差异具有统计学意义(χ^(2)=66.658,P<0.001)。肥胖检出率由高到低依次为职高(22.85%)、小学(17.18%)、初中(15.66%)、高中(9.67%),不同学段学生营养状况比较,差异具有统计学意义(χ^(2)=51.989,P<0.001)。含糖饮料达到每天1次及以上男生发生率为11.02%,女生为5.51%;新鲜水果少于每天1次男生发生率为22.04%,女生为17.07%;蔬菜摄入少于每天1次男生发生率为10.62%,女生为6.83%;中高强度运动少于每周3 d(包含3 d)男生发生率为51.50%,女生为65.53%;以上指标男女生比较,差异均具有统计学意义(χ^(2)_(含糖饮料)=18.808,χ^(2)_(水果)=7.442,χ^(2)_(蔬菜)=8.511,χ^(2)_(中高强度运动)=38.441,P均<0.01)。职高、高中、初中及小学学段糖饮料达到每天1次以上发生率分别为19.27%、6.55%、7.73%和5.40%;新鲜水果少于每天1次发生率分别为42.91%、22.54%、13.85%和11.33%;蔬菜摄入少于每天1次发生率分别为23.27%、10.02%、4.32%和5.04%;不是每天吃早餐(不吃或有时吃)发生率分别为28.73%、15.03%、14.75%和8.81%;中高强度运动少于每周3天发生率分别为76.73%、71.68%、42.27%和52.34%;以上指标不同学段比较,差异均具有统计学意义(χ^(2)_(含糖饮料)=51.430,χ^(2)_(水果)=133.072,χ^(2)_(蔬菜)=96.333,χ^(2)_(早餐)=57.002,χ^(2)_(中高强度运动)=143.140,P均<0.001)。不同营养状况学生的新鲜水果摄入少于每天1次发生率分别为消瘦(28.81%)、超重(22.87%)、肥胖(19.24%)和正常(17.94%),差异具有统计学意义(χ^(2)=10.569,P=0.014)。不同营养状况学生的含糖饮料、油炸食品、蔬菜摄入频率、早餐摄入情况和中高强度运动频率分布比较,差异均无统计学意义。结论海淀区中小学超重肥胖情况不容乐观,应引起学校和教育部门的重视,针对营养不良重点人群开展有针对性的预防和干预措施。

关键词：营养超重肥胖消瘦中小学生