检索结果-南通市图书馆

Journal of Oceanology and Limnology 2019年第5期37卷 1726-1735页

作者： DU Guangxun qu Lingyun shang Kun SUN Chengjun WANG Chen GAO Ping First Institute of Oceanography Ministry of Natural Resources (MNR)Qingdao 266061China Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China College of Fisheries and Life Science Dalian Ocean UniversityDalian 116023China

To identify the pathogen that causes scuticociliatosis in farmed-raised turbot Scophthalmus maximus , we isolated a ciliate from the brain tissue of an infected turbot and identifi ed it as Uronema marinum based on morphological and molecular evidence. We then infected the turbots in artifi cial laboratory settings with pure cultured U . marinum . The infected turbots showed syndromes similar to those observed in naturally infected ones. Furthermore, microscopic examination and PCR detection confi rmed the presence of the ciliate in the tissues of those laboratory-infected turbots. To our best knowledge, this is the fi rst report of scuticociliatosis caused by U . marinum in farm-raised turbot S . maximus in China.

关键词： Scophthalmus maximus scuticociliatosis histopathology Uronema marinum

Genome assembly of autotetraploid Actinidia arguta highlights adaptive evolution and enables dissection of important economic traits

在线全文

学校读者我要写书评

暂无评论

Plant Communications 2024年第6期5卷 173-192页

作者： Xue-Mei Lu Xiao-Fen Yu Guo-Qiang Li Ming-Hao qu Huan Wang Chuang Liu Yu-Ping Man Xiao-Han Jiang Mu-Zi Li Jian Wang Qi-Qi Chen Rui Lei Cheng-Cheng Zhao Yun-Qiu Zhou Zheng-Wang Jiang Zuo-Zhou Li shang Zheng Chang Dong Bai-Lin Wang Yan-Xiang Sun Hui-Qin Zhang Jie-Wei Li quan-Hui Mo Ying Zhang Xin Lou Hai-Xu Peng Ya-Ting Yi He-Xin Wang Xiu-Jun Zhang Yi-Bo Wang dan Wang Li Li Qiong Zhang Wen-Xia Wang Yongbo Liu Lei Gao Jin-Hu Wu Yan-Chang Wang CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhanHubeiChina Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhouGansuChina College of Life Sciences University of Chinese Academy of SciencesBeijingChina Wuhan Frasergen Bioinformatics Co. LtdWuhanHubeiChina Institute of Soil and Fertilizer Anhui Academy of Agricultural SciencesHefeiChina College of Agricultural Sciences Xichang UniversityXichangSichuanChina Department of Horticulture Heilongjiang Academy of Agricultural SciencesHarbinHeilongjiangChina College of Life Sciences Langfang Normal UniversityLangfangHebeiChina Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhouZhejiangChina Guangxi Institute of Botany Chinese Academy of SciencesGuilinGuangxiChina Xi’an Botanical Garden of Shaanxi Province Institute of Botany of Shaanxi ProvinceXi’anShaanxiChina Institute of Modern Agricultural Research Dalian UniversityDalianLiaoningChina Bioinformatics Center College of Plant Science and TechnologyBeijing University of AgricultureBeijingChina College of Agriculture Eastern Liaoning UniversityDandongLiaoningChina dalian Institute of Chemical Physics Chinese Academy of SciencesDalianLiaoningChina State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijingChina Hubei Hongshan Laboratory WuhanHubeiChina The New Zealand Institute for Plant and Food Research Limited AucklandNew Zealand

Actinidia arguta,the most widely distributed Actinidia species and the second cultivated species in the genus,can be distinguished from the currently cultivated Actinidia chinensis on the basis of its small and smooth fruit,rapid softening,and excellent cold *** evolution of tetraploid Actinidia species and the genetic basis of their important agronomic traits are still ***,we generated a chromosome-scale genome assembly of an autotetraploid male *** *** genome assembly was 2.77 Gb in length with a contig N50 of 9.97 Mb and was anchored onto 116 *** and clustering of 101 geographically representative accessions showed that they could be divided into two geographic groups,Southern and Northern,which first diverged 12.9 million years *** underwent two prominent expansions and one demographic bottleneck from the midPleistocene climate transition to the late *** genomics studies using paleoclimate data enabled us to discern the evolution of the species’adaptation to different historical *** genes(AaCEL1,AaPME1,and AaDOF1)related to flesh softening were identified by multi-omics analysis,and their ability to accelerate flesh softening was verified through transient expression assays.A set of genes that characteristically regulate sexual dimorphism located on the sex chromosome(Chr3)or autosomal chromosomes showed biased expression during stamen or carpel *** chromosome-level assembly of the autotetraploid *** genome and the genes related to important agronomic traits will facilitate future functional genomics research and improvement of ***.

关键词： kiwiberry dioecism adaptive evolution paleoclimate GEA rapid softening

贵州黑色岩系和煤系地层发育的富硒黄壤中硒的空间分异特征

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

矿物岩石地球化学通报 2024年第4期43卷 809-818页

作者：阳召文袁永强顾尚义瞿珮琳杨长鸿吴攀喀斯特地质资源与环境教育部重点实验室(贵州大学) 贵阳550025 贵州大学资源与环境工程学院贵阳550025

研究富硒土壤硒的分异特征对贵州富硒农业开发具有重要意义。本文以黔西南二叠纪煤系地层和遵义寒武纪黑色岩系地层中发育的黄壤为研究对象,对土壤的总硒含量、硒的形态分布、有效硒含量及影响因素进行了研究。结果表明,黑色岩系和煤系... 详细信息

研究富硒土壤硒的分异特征对贵州富硒农业开发具有重要意义。本文以黔西南二叠纪煤系地层和遵义寒武纪黑色岩系地层中发育的黄壤为研究对象,对土壤的总硒含量、硒的形态分布、有效硒含量及影响因素进行了研究。结果表明,黑色岩系和煤系地层发育黄壤的总硒平均含量分别为0.76 mg/kg和0.99 mg/kg;两种地层发育黄壤中的硒元素(Se)以有机结合态、残渣态和铁锰氧化物结合态为主;有效硒平均含量分别为67.2μg/kg和71.8μg/kg,分别占其总硒的8.57%和6.98%,包括水溶态、可交换态及碳酸盐结合态的有效硒供给水平很低。黑色岩系地层发育的黄壤总体呈酸性(pH均值为5.88),其有效硒含量主要受有机质影响;煤系地层发育的黄壤总体呈中性(pH均值6.84),其有效硒含量主要受pH影响。黑色岩系和煤系地层发育的黄壤,其影响硒有效性的因素有显著差异。因此,在发展富硒农业时需因地制宜。

关键词：黄壤硒黑色岩系地层煤系地层分异特征

在线全文

学校读者我要写书评

暂无评论

城市轨道车辆架控制动装置故障及可靠性研究

铁道机车车辆 2024年第1期44卷 150-156页

作者：孟繁辉尚小菲高靖添马永靖曲志及杨东中车长春轨道客车股份有限公司长春130062

制动控制装置是制动系统的核心部件,其故障情况直接影响地铁车辆运营的可靠性和安全性。文中针对应用相对广泛的架控制动装置,从结构原理分析其故障影响,并通过对既有分布在6个城市的12个地铁列车项目近3年的故障数据进行分析,确定故障... 详细信息

制动控制装置是制动系统的核心部件,其故障情况直接影响地铁车辆运营的可靠性和安全性。文中针对应用相对广泛的架控制动装置,从结构原理分析其故障影响,并通过对既有分布在6个城市的12个地铁列车项目近3年的故障数据进行分析,确定故障分布和故障影响,并开展可靠性计算。同时对典型故障从设计、制造多角度进行分析,为提升架控制动装置的可靠性和安全性提出了解决措施。

关键词：城市轨道车辆架控制动控制装置可靠性研究

脑电双频指数监测下的浅镇静技术在20例牙科焦虑症患者下颌阻生齿拔除中的应用

在线全文

学校读者我要写书评

暂无评论

口腔颌面外科杂志 2024年第2期34卷 134-137页

作者：于涛辛志军尚将孙静曲伟栋滨州医学院烟台264000 滨州医学院附属烟台口腔医院口腔颌面外科烟台264000 滨州医学院附属烟台口腔医院麻醉科烟台264000

目的:探讨浅镇静技术在焦虑患者阻生牙拔除术中的应用。方法:对20例下颌阻生牙焦虑患者行丙泊酚静脉输入,在患者脑电双频指数(bispectral index,BIS)达到80~85时拔除阻生牙,术中监测患者心率(heart rate,HR)、平均动脉压(mean arterial ... 详细信息

目的:探讨浅镇静技术在焦虑患者阻生牙拔除术中的应用。方法:对20例下颌阻生牙焦虑患者行丙泊酚静脉输入,在患者脑电双频指数(bispectral index,BIS)达到80~85时拔除阻生牙,术中监测患者心率(heart rate,HR)、平均动脉压(mean arterial pressure,MAP)、呼吸频率及血氧饱和度等,术后指导患者记录视觉模拟评分法(visual analogue scale,VAS)评分及询问患者顺行遗忘情况,采用SPSS 20.0软件包对数据进行数据统计,配对t检验比较术中生理指标与入室时的差异性,采用描述性分析法分析患者术中疼痛情况。结果:所有患者均顺利完成手术,未出现明显不良反应,术中HR、MAP、呼吸频率及血氧饱和度均未出现异常,患者术后VAS评分为1~3分,对手术开始、黏膜切开及牙钻声音顺行遗忘,即焦虑得到缓解。结论:针对牙科焦虑症患者下颌阻生牙的拔除,丙泊酚静脉浅镇静技术(BIS=80~85)即可达到较为满意的效果,减轻患者焦虑,提高舒适度。

关键词：浅镇静牙科焦虑症下颌阻生牙脑电双频指数

12种除草剂对花生棉花间作田阔叶杂草防效及安全性评价

在线全文

学校读者我要写书评

暂无评论

现代农药 2024年第2期23卷 84-90页

作者：李丹曲明静尚素琴杜龙 DEWER Youssef 甘肃农业大学植物保护学院/甘肃省农作物病虫害生物防治工程实验室兰州730070 山东省花生研究所山东青岛266100 植物毒性研究室/中央农药实验室/农业研究中心埃及吉萨12618

为筛选可用于花生棉花间作田的高效、安全除草剂,采用室内生物活性测定法评价了84%氯酯磺草胺水分散粒剂、84%双氯磺草胺水分散粒剂等12种除草剂对花生棉花间作田常见的6种阔叶杂草的防除效果及对花生和棉花的安全性。结果表明,120 g/... 详细信息

为筛选可用于花生棉花间作田的高效、安全除草剂,采用室内生物活性测定法评价了84%氯酯磺草胺水分散粒剂、84%双氯磺草胺水分散粒剂等12种除草剂对花生棉花间作田常见的6种阔叶杂草的防除效果及对花生和棉花的安全性。结果表明,120 g/噁草酮乳油、240 g/L乙氧氟草醚乳油、51%丙炔氟草胺水分散粒剂、40%扑草净可湿性粉剂、330 g/L二甲戊灵乳油在田间推荐剂量下可有效控制供试6种杂草;40%砜吡草唑悬浮剂在棉花和杂草间的选择性指数均大于2,杂草防除效果良好。25%噻吩磺隆可湿性粉剂、84%氯酯磺草胺水分散粒剂、20%乙羧氟草醚乳油等对棉花安全性相对较差。

关键词：花生棉花间作除草剂阔叶杂草防效安全性

舒适干预对脑胶质瘤患者术后焦虑、抑郁情绪的影响

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

癌症进展 2024年第2期22卷 229-232页

作者：尚晓彤许慧娜屈园园田思郑州大学第一附属医院神经外科郑州450000

目的探讨舒适干预对脑胶质瘤患者术后焦虑、抑郁情绪的影响。方法将98例脑胶质瘤手术患者按干预方法的不同分为对照组(给予常规干预)与观察组(给予舒适干预),每组49例。比较两组患者的不良情绪[焦虑自评量表(SAS)、抑郁自评量表(SDS)]... 详细信息

目的探讨舒适干预对脑胶质瘤患者术后焦虑、抑郁情绪的影响。方法将98例脑胶质瘤手术患者按干预方法的不同分为对照组(给予常规干预)与观察组(给予舒适干预),每组49例。比较两组患者的不良情绪[焦虑自评量表(SAS)、抑郁自评量表(SDS)]、生活质量[欧洲癌症研究与治疗组织生命质量测定量表(EORTC QLQ-C30)]、并发症发生情况和满意度。结果干预后,两组患者SAS、SDS评分均较干预前降低,且观察组患者SAS、SDS评分均低于对照组,差异均有统计学意义(P﹤0.05)。干预后,两组患者躯体功能、认知功能、情绪功能、角色功能、社会功能评分均较干预前升高,且观察组患者躯体功能、认知功能、情绪功能、角色功能、社会功能评分均高于对照组,差异均有统计学意义(P﹤0.05)。观察组患者并发症总发生率低于对照组,总满意度高于对照组,差异均有统计学意义(P﹤0.05)。结论舒适干预可缓解脑胶质瘤手术患者的不良情绪,改善其生活质量,同时还能降低并发症发生率,有助于进一步提升患者的满意度。

关键词：脑胶质瘤舒适干预焦虑抑郁

Identification of denatured and normal biological tissues based on compressed sensing and refined composite multi-scale fuzzy entropy during high intensity focused ultrasound treatment

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2021年第2期30卷 601-607页

作者： shang-qu Yan Han Zhang Bei Liu Hao Tang Sheng-You Qian School of Physics and Electronics Hunan Normal UniversityChangsha 410081China College of Mathematics and Physics Hunan University of Arts and ScienceChangde 415000China

In high intensity focused ultrasound(HIFU)treatment,it is crucial to accurately identify denatured and normal biological *** this paper,a novel method based on compressed sensing(CS)and refined composite multi-scale fuzzy entropy(RCMFE)is ***,CS is used to denoise the HIFU echo *** the multi-scale fuzzy entropy(MFE)and RCMFE of the denoised HIFU echo signals are *** study analyzed 90 cases of HIFU echo signals,including 45 cases in normal status and 45 cases in denatured status,and the results show that although both MFE and RCMFE can be used to identify denatured tissues,the intra-class distance of RCMFE on each scale factor is smaller than MFE,and the inter-class distance is larger than *** with MFE,RCMFE can calculate the complexity of the signal more accurately and improve the stability,compactness,and *** RCMFE is selected as the characteristic parameter,the RCMFE difference between denatured and normal biological tissues is more evident than that of MFE,which helps doctors evaluate the treatment effect more *** the scale factor is selected as 16,the best distinguishing effect can be obtained.

关键词： compressed sensing high intensity focused ultrasound(HIFU)echo signal multi-scale fuzzy entropy refined composite multi-scale fuzzy entropy

在线全文

学校读者我要写书评

暂无评论

电子烟烟液中烟碱测定的不确定度评价

云南化工 2024年第5期51卷 174-177页

作者：黄光莉于航尚梦琦林琳曲亚玲北京市烟草质量监督检测站北京101121

为了提高检测结果的准确性,对气相色谱法(GC)测定电子烟烟液中烟碱含量的测量不确定度进行了分析和评定。结果表明:气相色谱法测定电子烟烟液中烟碱含量的测量不确定度主要来源为标准溶液的配制过程和校正曲线的线性拟合。统计分析发现... 详细信息

为了提高检测结果的准确性,对气相色谱法(GC)测定电子烟烟液中烟碱含量的测量不确定度进行了分析和评定。结果表明:气相色谱法测定电子烟烟液中烟碱含量的测量不确定度主要来源为标准溶液的配制过程和校正曲线的线性拟合。统计分析发现,回收率与100%差异不显著,当样品中烟碱的质量分数为18.3 mg/g时,在95%的置信水平下,该分析方法的扩展不确定度为1.0 mg/g(k=2)。

关键词：气相色谱法电子烟烟碱不确定度