检索结果-南通市图书馆

The interactive effect of temperature and fertilizer types determines the dominant microbes in nitrous oxide emissions and the dicyandiamide efficacy in a vegetable soil

引用

SOIL ECOLOGY LETTERS 2024年第3期6卷 230213-230213页

作者： Xu, Xiaoya Liu, Haiyang Liu, Yaowei Lesueur, didier Herrmann, Laetitia di, hongjie Tang, Caixian Xu, Jianming Li, Yong Zhejiang Univ Coll Environm & Resource Sci Zhejiang Prov Key Lab Agr Resources & Environm Hangzhou 310058 Peoples R China Shandong Normal Univ Coll Geog & Environm Jinan 250014 Peoples R China Ctr Cooperat Int Rech Agron Dev CIRAD UMR Eco & Sols Hanoi Vietnam Univ Montpellier UMR Inst Natl Rech Agr Alimentat & Environm INRAE Inst Rech Dev IRD Eco & SolsCIRADMontpellier SupAgro F-34060 Montpellier France Alliance Biodivers Int & Int Ctr Trop Agr CIAT Asia Hub Common Microbial Biotechnol Platform CMBP Hanoi Vietnam Deakin Univ Fac Sci Engn & Built Environm Sch Life & Environm Sci Burwood Vic 3125 Australia Chinese Acad Trop Agr Sci Rubber Res Inst Danzhou 571737 Peoples R China La Trobe Univ La Trobe Inst Sustainable Agr & Food Dept Anim Plant & Soil Sci Bundoora Vic 3086 Australia

dicyandiamide decreased N2O emissions even under 40 degrees *** oxidizers and nirS were well adapted to 40 degrees C in manured *** nirK tolerated high temperature better in urea than manure *** to nosZII, nosZI adapted to all temperature regardless of ***-denitrifier dominated N2O emissions at high temperature in fertilized *** waves associated with global warming and extreme climates would arouse serious consequences on nitrogen (N) cycle. However, the responses of the functional guilds to different temperatures, especially high temperature and the cascading effect on N2O emissions remain unclear. An incubation study was conducted to examine the effect of different temperatures (20 degrees C, 30 degrees C, and 40 degrees C) and fertilizer types (urea and manure) on N2O-producers and N2O-reducers, as well as the efficacy of dicyandiamide (DCD) on N2O emissions in a vegetable soil. Results showed that ammonia oxidizers and nirS-type denitrifiers were well adapted to high temperature (40 degrees C) with manure application, while the fungal nirK-denitrifiers had better tolerance with urea application. The nosZ clade I microbes had a strong adaptability to various temperatures regardless of fertilization type, while the growth of nosZ clade II group microbes in non-fertilized soil (control) were significantly inhibited at higher temperature. The N2O emissions were significantly decreased with increasing temperature and DCD application (up to 60%, even at 40 degrees C). Under high temperature conditions, fungal denitrifiers play a significant role in N-limited soils (non-fertilized) while nirS-type denitrifiers was more important in fertilized soils in N2O emissions, which should be specially targeted when mitigating N2O emissions under global warming climate.

关键词： nitrogen fertilizer microorganisms nitrification inhibitor bacteria archaea fungi AMMONIA-OXIdiZING BACTERIA N2O EMISSIONS NITRIFICATION INHIBITOR HETEROTROPHIC NITRIFICATION NICHE diFFERENTIATION ARCHAEA GRASSLAND COMMUNITY GROWTH DENITRIFICATION

来源：

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

甘肃省工业应用放射工作人员淋巴细胞微核影响因素分析

引用

中国辐射卫生 2024年第2期33卷 148-152页

作者：李烨吴小琴刘刚邸宏杰甘肃省疾病预防控制中心甘肃兰州730000

目的分析工业应用放射工作人员外周血淋巴细胞微核异常检出情况及影响因素,为辐射防护提供参考。方法通过甘肃省疾病预防控制中心职业健康体检系统,收集661名在岗工业应用放射工作人员的职业健康监护资料,分析外周血淋巴细胞微核异常检... 详细信息

目的分析工业应用放射工作人员外周血淋巴细胞微核异常检出情况及影响因素,为辐射防护提供参考。方法通过甘肃省疾病预防控制中心职业健康体检系统,收集661名在岗工业应用放射工作人员的职业健康监护资料,分析外周血淋巴细胞微核异常检出情况,并采用logistic回归对影响因素进行分析。结果661名工业应用放射工作人员微核异常率6.05%。不同性别微核异常率比较,差异无统计学意义(P>0.05);不同年龄组比较,微核异常率随年龄增长而增加,其中50岁以上年龄组微核异常率最高(17.81%),各年龄组间差异有统计学意义(P<0.05);不同职业类别微核异常率比较,各组间差异有统计学意义(P<0.05);不同放射工龄组比较,各工龄组间差异有统计学意义(P<0.05)。经logistic回归分析,年龄和放射工龄是影响微核异常率的危险因素(P<0.05);年龄为影响微核异常率的独立危险因素(P<0.05)。结论低剂量电离辐射对工业应用放射工作人员淋巴细胞微核异常率的影响与年龄和工龄有一定的关系,应关注放射工作人员的职业健康监护,尤其是高年资的放射工作人员。

关键词：工业应用放射工作人员微核影响因素

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于“三热”理论分析2型糖尿病中医证型与危险因素及糖脂代谢指标相关性

引用

中医药导报 2024年第9期30卷 47-50页

作者：郭晨希朱垚狄红杰南京中医药大学第二附属医院江苏南京210017 南京中医药大学江苏南京210029

目的:基于“三热”理论研究2型糖尿病(T2DM)的中医证型分布规律,并探讨中医证型与危险因素及糖脂代谢指标之间的相关性。方法:收集410例T2DM患者的四诊资料,确定中医证型,采集患者的一般资料、危险因素及糖脂代谢指标,分析T2DM的中医证... 详细信息

目的:基于“三热”理论研究2型糖尿病(T2DM)的中医证型分布规律,并探讨中医证型与危险因素及糖脂代谢指标之间的相关性。方法:收集410例T2DM患者的四诊资料,确定中医证型,采集患者的一般资料、危险因素及糖脂代谢指标,分析T2DM的中医证型分布特点及其与一般资料、危险因素和糖脂代谢指标的关系。结果:证型分布从高到低依次为瘀热证[48.78%(200/410)]、湿热证[27.80%(114/410)]、燥热证[23.41%(96/410)]。年龄、病程以瘀热证最高(P<0.05),体质量指数(BMI)、腰围、臀围以湿热证最高(P<0.05)。危险因素中糖尿病家族史、不健康饮食和缺乏运动的占比接近或超过50%,其中不健康饮食和缺乏运动以湿热证最多(P<0.05)。空腹C肽(FCP)、胰岛素抵抗指数(HOMA-IR)、甘油三酯(TG)以湿热证最高(P<0.05);胰岛β细胞功能指数(HOMA-β)以瘀热证最低(P<0.05)。结论:以“三热”理论分析T2DM证型,总体以瘀热证居多。湿热证的T2DM患者多存在不健康饮食和缺乏运动,并伴有超重、高胰岛素血症、高TG血症和胰岛素抵抗的临床问题;瘀热证T2DM患者多存在胰岛素缺乏,且年龄较大,病程较长。

关键词： 2型糖尿病 “三热论” 燥热证湿热证瘀热证危险因素糖脂代谢相关性分析

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

高速磁悬浮长定子绕组电缆关键电气特性

引用

电线电缆 2024年第3期67卷 65-70页

作者：刘雄军韩啸李斌狄洪杰江苏上上电缆集团有限公司溧阳213300

随着新型高速磁悬浮长定子绕组电缆结构和性能的变化,其关键电气特性需要重新研究和确定,以便为产品的设计提供指导依据。本工作基于有限元仿真技术,对新型高速磁悬浮长定子绕组电缆的电场强度和分布、短路电流容量、电容电流容量进行... 详细信息

随着新型高速磁悬浮长定子绕组电缆结构和性能的变化,其关键电气特性需要重新研究和确定,以便为产品的设计提供指导依据。本工作基于有限元仿真技术,对新型高速磁悬浮长定子绕组电缆的电场强度和分布、短路电流容量、电容电流容量进行了计算,确定了其在不同运行电压等级、不同外护套体积电阻率、不同接触电阻下的电气特性及变化趋势。结果表明:高速磁悬浮长定子绕组电缆的安全电压等级可以进一步提升,降低外护套的体积电阻率可以在一定程度上提升电缆短路电流容量,但效果较差;高速磁悬浮长定子绕组电缆与“Ω”型夹之间存在0.2Ω的接触电阻,接触电阻会导致电容电流容量降低62%,因此电缆具有良好的接地特性是磁悬浮系统安全运行的重要前提。

关键词：高速磁悬浮绕组电缆有限元仿真电气性能

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

干湿变化调控稻田土壤活性细菌群落与潜在功能

引用

土壤学报 2024年第5期61卷 1421-1431页

作者：丁晨晓刘耀威刘亥扬叶鑫喆陈雅雯叶静邸洪杰徐建明李勇浙江省农业资源与环境重点实验室浙江大学环境与资源学院杭州310058 河南农业大学环境与资源学院郑州450002

大量研究发现干湿变化显著影响土壤微生物群落和温室气体排放。然而,土壤干湿变化下活性微生物和温室气体排放的瞬时动态变化仍不清楚。因此,本实验首先观察稻田土壤在干旱、湿润和干湿变化三种情况下细菌群落和温室气体排放的动态变化... 详细信息

大量研究发现干湿变化显著影响土壤微生物群落和温室气体排放。然而,土壤干湿变化下活性微生物和温室气体排放的瞬时动态变化仍不清楚。因此,本实验首先观察稻田土壤在干旱、湿润和干湿变化三种情况下细菌群落和温室气体排放的动态变化,然后运用基于18O的稳定性同位素核酸探针技术(DNA-SIP)和高通量测序探讨干湿变化下土壤活性细菌群落的多样性、构建与潜在功能。相比于干旱和湿润处理,干湿变化显著促进二氧化碳的排放和含有更高相对丰度的放线菌门和浮霉菌门。干湿变化下变形菌门、放线菌门和浮霉菌门的相对丰度均随着培养时间呈现显著增长。而DNA-SIP试验结果表明干湿变化处理活性细菌的alpha多样性随着培养时间显著降低,变形菌门和放线菌门细菌是最主要的活性细菌,其中变形菌门中黏球菌目的相对丰度随培养时间呈显著增加。活性细菌的群落构建由确定性所主导,且随着培养进行,确定性的主导作用进一步加强。活性细菌的功能预测进一步发现碳水化合物代谢潜能随培养时间显著降低。综上,干湿变化处理显著改变土壤细菌群落,并促进稻田土壤二氧化碳排放,干湿变化处理的活性细菌由变形菌门和放线菌门细菌主导,活性细菌的群落构建由确定性过程主导。

关键词：干湿变化稻田土壤活性细菌多样性群落构建功能预测

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

High manure load reduces bacterial diversity and network complexity in a paddy soil under crop rotations

引用

Soil Ecology Letters 2020年第2期2卷 104-119页

作者： Haiyang Liu Xing Huang Wenfeng Tan hongjie di Jianming Xu Yong Li Institute of Soil and Water Resources and Environmental Science College of Environmental and Resource SciencesZhejiang Provincial Key Laboratory of Agricultural Resources and EnvironmentZhejiang UniversityHangzhou 310058China Key Laboratory of Horticultural Plant Biology The Ministry of EducationCollege of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China

Long-term application of chemical fertilizers causes soil degradation and nitrogen(N)loss,but these effects could be alleviated by organic *** addition,crop rotation is a feasible practice to increase soil fertility,soil quality and crop yields comparing with monocultural cropping ***,questions remain concerning how the soil microbiome responds to different manure application rates under crop ***,we collected soil samples from a rice-rape system to investigate the response of the soil microbiome to nine years of pig manure application at different rates(CK:0 kg ha^(-1),M1:1930 kg ha^(-1),M2:3860 kg ha^(-1) and M3:5790 kg ha^(-1)).Our results revealed that the bacterialα-diversity(Chao1 and Shannon index)in the rape season increased first and then decreased with increasing manure application rates,and a high manure load tended to decrease the bacterialα-diversity in the rice ***-term manure application enriched some copiotrophic bacteria,such as Proteobacteria and Actinobacteria,while it decreased the relative abundance of *** analysis(RDA)and the Mantel test indicated that soil pH,TC,TN,AP,C/P and N/P ratios were the main factors influencing bacterial ***,network analysis showed that a low manure application rate shaped a complexly connected and stable bacterial community,while higher manure application rate decreased the stability of the bacterial *** findings improve our understanding of bacterial responses to longterm manure application under crop rotations and their relationships with soil factors,especially in the context of increasing fertilizer inputs.

关键词： Manure application Rotation diversity Bacterial community Sequencing

来源：

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

从“三热论”辨治糖尿病心脏自主神经病变

引用

中医学报 2024年第3期39卷 501-504页

作者：苏奔狄红杰陆明郭立中周茜朱垚上海中医药大学附属龙华医院上海200032 南京中医药大学第二附属医院江苏南京210017 南京中医药大学国医大师周仲瑛工作室江苏南京210029

糖尿病心脏自主神经病变病理因素有燥、热、湿、痰、瘀等,病位以心为主,亦与脾、肝、肾关系密切,病性为本虚标实。临床中消渴虽多见燥热,但同时患者常因饮食不节,过食肥甘,以致酿生湿热。消渴日久,热灼津伤,津枯血燥,可致络热血瘀,形成... 详细信息

糖尿病心脏自主神经病变病理因素有燥、热、湿、痰、瘀等,病位以心为主,亦与脾、肝、肾关系密切,病性为本虚标实。临床中消渴虽多见燥热,但同时患者常因饮食不节,过食肥甘,以致酿生湿热。消渴日久,热灼津伤,津枯血燥,可致络热血瘀,形成瘀热。湿热、瘀热、燥热之间存在因果转化关系,三热既可单独致病,又能兼夹并见。三热交炽,阴伤气耗,形成恶性循环。国医大师周仲瑛教授结合中医经典及临床实践在辨治糖尿病及其并发症时提出“三热论”,基于此,治疗糖尿病心脏自主神经病变应以“三热”并清、气血同治、标本兼顾为基本原则,谨守病机,运用复法组方恰当施治,即清化与润燥并进、化湿祛瘀与生津凉润并举,方能充分发挥中医“圆机活法”的治疗优势。

关键词：糖尿病心脏自主神经病变 “三热论” 湿热瘀热燥热病机辨证周仲瑛

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Translucent ceramic enabling next-generation lasing-driven near-infrared light source

引用

Science China Materials 2024年第4期67卷 1359-1360页

作者： hongjie Zhang Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry(CIAC)Chinese Academy of Sciences(CAS)Changchun 130022China

Broadband near-infrared(NIR) light sources demonstrate great potential in quantitative food analysis, material identification,invasive brain imaging diagnosis, and real-time health monitoring fields, etc. [1–3]. Compared with competing technologies based on quantum dots and organic crystals, NIR-emitting phosphor converted light-emitting diodes(pc-LEDs) favor high spectral modulation and physicochemical stability [4].

关键词： light ceramic lasing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Lanthanide-based microlasers:Synthesis,structures,and biomedical applications

引用

Nano Research 2024年第1期17卷 97-111页

作者： Qian Zhang Yawei Liu Kai Liu hongjie Zhang Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Xiangfu Laboratory Jiaxing 314102China

The large size of lasers limits their applications in confined spaces,such as in biosensing and in vivo brain tissue *** this regard,micron-sized lasers have been *** exhibit great potential for biological detecting,remote sensing,and depth tracking due to their small sizes,sensitive properties of their spectral fingerprints,and flexible positional modulation in the ***-based luminescent materials that possess long excited-state lifetime,narrow emission bandwidth,and upconversion behaviors are promising as gain mediums for novel *** addition,lanthanide-based microlasers could be generated under natural ambient conditions with pumped or continuous light sources,which significantly promotes the practical applications of *** progress in the design,synthesis,and biomedical applications of lanthanide-based microlasers has been outlined in this *** ions doped and upconverted lanthanide-based microlasers are highlighted,which exhibit advantageous structures,miniaturized dimensions,and high lasing *** applications of lanthanide-based microlasers are further discussed,the upconverted microlasers show great advantages for biological applications owing to their tunable excitation and emission characteristics and excellent environmental ***,perspectives and challenges in the field of lanthanide-based microlasers are presented.

关键词： microlasers lanthanide-based luminescent materials upconversion nanoparticles biological applications

来源：

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

Modular Soft Robotic Crawlers Based on Fluidic Prestressed Composite Actuators

引用

Journal of Bionic Engineering 2024年第2期21卷 694-706页

作者： Zefeng Xu Linkai Hu Longya Xiao hongjie Jiang Yitong Zhou Shien-Ming Wu School of Intelligent Engineering South China University of TechnologyGuangzhou511442China School of Mechanical and Electrical Engineering Guangzhou UniversityGuangzhou510006China

Soft robotic crawlers have limited payload capacity and crawling *** study proposes a high-performance inchworm-like modular robotic crawler based on fluidic prestressed composite(FPC)*** FPC actuator is precurved and a pneumatic source is used to flatten it,requiring no energy cost to maintain the equilibrium curved *** and depressurizing the actuators generate alternating stretching and bending motions of the actuators,achieving the crawling motion of the robotic ***-modal locomotion(crawling,turning,and pipe climbing)is achieved by modular reconfiguration and gait *** analytical kinematic model is proposed to characterize the quasi-static curvature and step size of a single-module *** configurations of robotic crawlers are fabricated to demonstrate the crawling ability of the proposed design.A set of systematic experiments are set up and conducted to understand how crawler responses vary as a function of FPC prestrains,input pressures,and actuation *** per the experiments,the maximum carrying load ratio(carrying load divided by robot weight)is found to be 22.32,and the highest crawling velocity is 3.02 body length(BL)per second(392 mm/s).Multi-modal capabilities are demonstrated by reconfiguring three soft crawlers,including a matrix crawler robot crawling in amphibious environments,and an inching crawler turning at an angular velocity of 2/s,as well as earthworm-like crawling robots climbing a 20 inclination slope and pipe.

关键词： Soft robot Soft crawler Fluidic prestressed composite Kinematic model Enhanced loading Multi-modal capability

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：