检索结果-南通市图书馆

Alterations of soil aggregates and intra-aggregate organic carbon fractions after soil conversion from paddy soils to upland soils:Distribution,mineralization and driving mechanism

引用

Pedosphere 2024年第1期34卷 121-135页

作者： Longfei KANG jiamei wu Chunfeng ZHANG Baoguo ZHU Guixin CHU College of Life Science Shaoxing UniversityShaoxing 312000China The Key Laboratory of Oasis Eco-agriculture Xinjiang Production and Construction Group/Department of Resources and Environmental SciencesAgronomy CollegeShihezi UniversityShihezi 832000China Hunan Institute of Agricultural Environment and Ecology Changsha 410000China Jiamusi Branch Heilongjiang Academy of Agricultural SciencesJiamusi 154007China

Investigating the impacts of soil conversion on soil organic carbon(OC) content and its fractions within soil aggregates is essential for defining better strategies to improve soil structure and OC sequestration in terrestrial ecosystems. However, the consequences of soil conversion from paddy soil to upland soil for soil aggregates and intra-aggregate OC pools are poorly understood. Therefore, the objective of this study was to quantify the effects of soil conversion on soil aggregate and intra-aggregate OC pool distributions. Four typical rice-producing areas were chosen in North and South China, paired soil samples(upland soil converted from paddy soil more than ten years ago vs. adjacent paddy soil) were collected(0–20 cm) with three replicates in each area. A set of core parameters(OC preservation capacity, aggregate carbon(C) turnover, and biological activity index) were evaluated to assess the responses of intra-aggregate OC turnover to soil conversion. Results showed that soil conversion from paddy soil to upland soil significantly improved the formation of macro-aggregates and increased aggregate stability. It also notably decreased soil intra-aggregate OC pools, including easily oxidized OCa(EOCa), particulate OCa(POCa), and mineral-bound(MOCa) OC, and the sensitivity of aggregate-associated OC pools to soil conversion followed the order: EOCa(average reduction of 21.1%) > MOCa(average reduction of 15.4%) > POCa(average reduction of 14.8%). The potentially mineralizable C(C_(0)) was significantly higher in upland soil than in paddy soil, but the corresponding decay constant(k) was lower in upland soil than in paddy soil. Random forest model and partial correlation analysis showed that EOCa and pH were the important nutrient and physicochemical factors impacting k of C mineralization in paddy soil,while MOCa and C-related enzyme(β-D-cellobiohydrolase) were identified as the key factors in upland soil. In conclusion, this study evidenced that soil conversion

关键词： decay constant easily oxidized organic C macro-aggregate meso-aggregate micro-aggregate mineral-bound organic C particulate organic C potentially mineralizable C

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

Teaching Reform of Basic Medicine Curriculum by Integrating the Perspective of Curriculum Civics and Politics in the Context of Healthy China

引用

Journal of Contemporary Educational Research 2024年第4期8卷 132-137页

作者： jiamei wu Baxin Wang Tianrong Xing Yanan Su Lei Liu School of Basic Medical Sciences Jiamusi UniversityJiamusi 154002Heilongjiang ProvinceChina Baicheng Medical College Baicheng 137000Jilin ProvinceChina The First Hospital Attached to Jiamusi University Jiamusi 154002 Heilongjiang ProvinceChina

Basic medicine is the foundation of basic knowledge of medical science,life science,and natural science,and is the basis for training medical *** can help students correctly understand the relationship between disease and health,and is of great significance under the perspective of the Healthy China ***,there are still some deficiencies in the current teaching,and insufficient attention has been paid to civics and ***,it is necessary to carry out curriculum reform in order to enable students to better understand medical knowledge and master medical skills,to ensure the development of medical education,and to play an important role in basic *** study combines the necessity of curriculum reform under the perspective of civics and politics and puts forward a teaching reform strategy suitable for the development of contemporary medicine to provide a direction for the educational development of basic medicine.

关键词： Healthy China Curriculum civics and politics Basic medicine

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

Optimization of Polysaccharides Extraction from Physalis alkekengi *** and Its Effect on the Expression of Inflammation-Related Proteins in SW620 Cells

引用

Proceedings of Anticancer Research 2024年第4期8卷 148-156页

作者： Dan Shao Chengxin Hao Yubi Mei Jiaxin Xu Tianjiao Wang Wei Yang jiamei wu Baicheng Medical College BaichengJilin 137000China

Objective:To establish an optimized aqueous extraction process for polysaccharides from Physalis alkekengi *** and to preliminarily explore its in vitro anti-inflammatory activity against colorectal cancer SW620 ***:A single-factor test combined with orthogonal test analysis was used to evaluate the effects of the material-to-liquid ratio,extraction temperature,and extraction time on the yield of polysaccharides from Physalis alkekengi *** antioxidant activity of the polysaccharides was assessed by analyzing their free radical scavenging ability in vitro,and the anti-inflammatory effect was evaluated using SW620 ***:The optimal extraction conditions were a material-to-liquid ratio of m(g):V(mL)=1:30,an extraction temperature of 100℃,and an extraction time of 40 minutes,with a predicted polysaccharide yield of 25.7%.The polysaccharides from Physalis peruviana peel effectively scavenged DPPH,superoxide anion,and hydroxyl *** treatment with Physalis peruviana polysaccharides,the levels of IL-1β,IL-18,and TNF-αin the cell culture medium were significantly reduced,and the phosphorylation level of P65 protein in SW620 cells was ***:This extraction method is stable and reliable,and the prepared Physalis alkekengi *** exhibit significant in vitro antioxidant and anti-inflammatory *** study provides a theoretical basis for developing drugs for the prevention and treatment of colorectal cancer.

关键词： Physalis alkekengi L.polysaccharide Antioxidant IL-1β Extraction process Colorectal cancer

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

云边协同的轨道交通综合监控系统方案

引用

电气自动化 2024年第3期46卷 80-82,86页

作者：乌家玫上海电气自动化设计研究所有限公司上海200023

轨道交通综合监控系统是根据轨道交通线路特点量身定制的大型综合自动化项目,使用综合监控系统能够完成各类异构数据的统一接入与存储,实现城市轨道交通信息互通、资源共享。随着云技术、微服务、物联网、大数据分析和人工智能等技术的... 详细信息

轨道交通综合监控系统是根据轨道交通线路特点量身定制的大型综合自动化项目,使用综合监控系统能够完成各类异构数据的统一接入与存储,实现城市轨道交通信息互通、资源共享。随着云技术、微服务、物联网、大数据分析和人工智能等技术的不断发展,将新技术融入综合监控系统中,在保证原有系统安全、可靠、高效的前提下建设云边协同的综合监控系统。所提系统扩展了原有综合监控系统的功能,使其应用维度可以向纵深、横向进一步发展,充分发挥数据的作用,将数据转化为资产,为建设数字轨交打下基础。

关键词：综合监控系统异构数据云边协同数据资产数字轨交

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

多专业融合智能运维系统在轨道交通中的应用

引用

电气自动化 2024年第4期46卷 109-110,113页

作者：乌家玫上海电气自动化设计研究所有限公司上海200023

随着城市轨道交通的大力发展,许多城市的轨交运营已由线路级运营转变为线网级运营,特别像上海、北京、广州和成都等城市,已形成超大规模线网运营模式。随着线路规模的增长,运维管理难度也成倍增加,如何保障大量设施设备正常运作以满足... 详细信息

随着城市轨道交通的大力发展,许多城市的轨交运营已由线路级运营转变为线网级运营,特别像上海、北京、广州和成都等城市,已形成超大规模线网运营模式。随着线路规模的增长,运维管理难度也成倍增加,如何保障大量设施设备正常运作以满足日常运营需求,已成为一个重要的课题。因此,搭建了一套数字化、智能化的多专业融合智能运维平台来指导设备日常维护,可提高设备的利用率和生产效率,降低设备维修成本,从而提升运营管理活动,促进高质量可持续发展。

关键词：多专业融合智能运维数字化智能化线网级运营

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

基于多模态融合的复杂场景人员重识别

引用

电气自动化 2024年第2期46卷 113-115,118页

作者：乌家玫上海电气自动化设计研究所有限公司上海200023

人员重识别(re-identification,ReID)是计算机视觉中的关键任务,具有众多实际应用,如视频监控和人员跟踪。通过对各类应用场景的研究,提出了一种新方法,以解决复杂场景下ReID的挑战,包括遮挡、视角变化和光照条件变化等问题。利用多模... 详细信息

人员重识别(re-identification,ReID)是计算机视觉中的关键任务,具有众多实际应用,如视频监控和人员跟踪。通过对各类应用场景的研究,提出了一种新方法,以解决复杂场景下ReID的挑战,包括遮挡、视角变化和光照条件变化等问题。利用多模态融合技术增强了ReID模型的判别能力,使其在具有挑战性的现实场景中更加稳健,并在基准数据集上进行了广泛的试验。结果表明了所提方法的有效性,实现了更为先进的性能。

关键词：视频监控人员跟踪人员重识别多模态融合重识别(ReID)模型

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

用电信息采集系统在电力营销中的应用

引用

流体测量与控制 2024年第1期5卷 69-72页

作者：伍佳梅任俊娄底市湘能农电服务有限公司新化县分公司湖南新化417600

随着社会的不断发展和电力行业的不断变革,电力营销已成为电力企业必须关注的一个重要领域。在这个领域中,用电信息采集系统已经成为电力企业不可或缺的一个工具,它可以为电力企业提供实时的用电信息,并帮助企业更好地进行电力营销。本... 详细信息

随着社会的不断发展和电力行业的不断变革,电力营销已成为电力企业必须关注的一个重要领域。在这个领域中,用电信息采集系统已经成为电力企业不可或缺的一个工具,它可以为电力企业提供实时的用电信息,并帮助企业更好地进行电力营销。本文详细介绍了用电信息采集系统在电力营销中的应用,并探讨其未来的发展方向。

关键词：用电信息采集系统电力营销电力企业

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

线上线下混合式教学法在病理学课程教学中的应用

引用

中国继续医学教育 2024年第6期16卷 64-68页

作者：吴佳梅单福新孙盟盟白城医学高等专科学校基础医学院吉林白城137000

目的研究线上线下混合式教学法在病理学课程教学中的应用效果。方法选择2021年9月—2022年6月白城医学高等专科学校180名2021级护理学专业学生为对象,以随机数字表法分为两组,试验组和对照组各为90名。对对照组学生行传统教学法完成... 详细信息

目的研究线上线下混合式教学法在病理学课程教学中的应用效果。方法选择2021年9月—2022年6月白城医学高等专科学校180名2021级护理学专业学生为对象,以随机数字表法分为两组,试验组和对照组各为90名。对对照组学生行传统教学法完成病理学课程教学,对试验组学生行线上线下混合式教学法完成病理学课程教学。比较2组学生考核成绩、教育环境评分及教学满意度。结果试验组学生的基础知识摸底考核成绩[(89.68±6.97)分]、综合学习效果考核成绩[(88.94±7.91)分]均高于对照组,差异有统计学意义(P <0.001);试验组学生Dreem问卷中的学习知觉[(40.22±3.63)分]、教师知觉[(37.96±5.22)分]、学术自我知觉[(29.33±5.68)分]、环境知觉[(40.72±4.55)分]及总分[(172.95±12.66)分]均高于对照组,差异有统计学意义(P <0.001);试验组学生对当前教学方法是否满意(95.56%)、当前教学方法是否有利于提高学习自觉性和主动性(94.44%)等各项教学满意度均高于对照组,差异有统计学意义(P <0.05)。结论线上线下混合式教学法在病理学课程教学中的应用可有效提高学生的基础知识及综合学习成绩,对改善教育环境、提高教学满意度有积极作用。

关键词：护理专业病理学传统教学线上线下混合式教学教学成绩教育环境教学满意度

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

Does the social security fund help non-financial enterprises to transform from the virtual to the real?

引用

China Journal of Accounting Research 2022年第2期15卷 149-171页

作者： Dapeng Tang jiamei wu Zhibin Chen School of Accounting Dongbei University of Finance and EconomicsDalianChina School of Economics and Management Southeast UniversityNanjingChina

At its 19th National Congress,the Communist Party of China vowed to“strengthen the financial sector’s ability to serve the real economy.”However,many studies provide evidence of the opposite trend,a problematic“transition from the real to the virtual,”among Chinese ***,the investment efficiency of China’s Social Security Fund(SSF),a public fund,attracts much *** this context,we use A-share listed companies in China from2009 to 2018 to study the relationship between holding by the SSF and enterprise *** find that SSF holding significantly inhibits financialization and that this effect is *** analysis indicates that SSF holding suppresses enterprises’financialization mainly by improving their ***,SSF holding more strongly inhibits small-scale(***-scale),state-owned(***-state-owned),and non-eastern(***)enterprises in ***,SSF holding can alleviate corporate value impairment caused by *** conclusions enrich theoretical research and provide empirical evidence that may help regulatory authorities to guide investment by enterprises and prevent financial risks.

关键词： Social security fund holding(SSF holding) Non-financial enterprises Financialization Transition from the virtual to the real China

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

Bio-inspired Hydroxyapatite/Gelatin Transparent Nanocomposites

引用

Journal of wuhan University of Technology(Materials Science) 2024年第2期39卷 298-308页

作者：谭军军 wu Mingchen LI Yuzhe PENG jiamei 熊焰 Hubei Province Key Laboratory of Green Materials for Light Industry Collaborative Innovation Center for Green Light-weight Materials and ProcessingHubei University of TechnologyWuhan 430068China

Hydroxyapatite(HA)nanoparticles impart outstanding mechanical properties to organicinorganic nanocomposites in *** by the composite structure of HA nanoparticles and collagen in bone,a high performance HA/gelatin nanocomposite was first *** nanocomposites have much better mechanical properties(elongation at break 29.9%,tensile strength 90.7 MPa,Young’s modulus 5.24 GPa)than pure gelatin films(elongation at break 9.3%,tensile strength 90.8 MPa,Young’s modulus 2.5 GPa).In addition,the composite films keep a high transmittance in visible wavelength range from 0%to 60%of the HA solid *** differences in properties are attributed to the homogeneous distribution of HA nanoparticles in the gelatin polymer matrix and the strong interaction between the particle surfaces and the gelatin *** protocol should be promising for HA-based nanocomposites with enhanced mechanical properties for biomedical applications.

关键词： hydroxyapatite nanocomposites sodium citrate gelatin colloidal stability

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

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：