检索结果-南通市图书馆

Light grazing alleviates aeolian erosion–deposition effects on microbial communities in a semi-arid grassland

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecological Processes 2024年第2期 148-164页

作者： Mingming Cui Biqi Bao Yipu Wu Nan Hui Mai-He Li Shiqiang Wan Shijie Han Feirong Ren junqiang zheng International Joint Research Laboratory for Global Change Ecology School of Life Sciences Henan University Yellow River Floodplain Ecosystems Research Station School of Life Sciences Henan University School of Agriculture and Biology Shanghai Jiao Tong University Forest Dynam-ics Swiss Federal Institute for Forest Snow and Landscape Research WSL Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains Ministry of Education School of Geographical Sciences Northeast Normal University School of Life Science Hebei University

Background Soil erosion affects the stability of terrestrial ecosystems and ecosystem services by directly or indirectly impacting the cycling of soil materials and energy and reducing the fertility of grassland soils. However, research on microbial adaptation to grazing and soil erosion is limited, particularly in relation to grassland ecosystem restora-tion. Here, we assess microbial communities subjected to simulated soil erosion and grazing in a semi-arid grassland of Inner Mongolia, *** No significant change was observed in soil variables. However, the structure of the soil microbial commu-nity underwent significant changes as a result of soil erosion and soil erosion plus grazing, leading to a significant increase in the relative abundance of Cyanobacteria(116.80% vs 116.38%). Wind erosion and deposition contributed to an increase in the network complexity of soil bacterial and fungal communities. However, much of this effect was alleviated by grazing. Simultaneously, aeolian processes and grazing regulate soil microbial community assembly, leading to inconsistent patterns of change in bacterial and fungal communities. Under wind erosion and deposi-tion, the relative contribution of deterministic processes(4.44% vs 31.11%) in bacterial communities increased, while the relative contribution of stochastic processes(2.23% vs 20%) in fungal communities reduced. Grazing resulted in a decrease in the relative contribution of deterministic processes(8.89%) in the bacterial community and an increase in the relative contribution of stochastic processes(8.89%) in the fungal *** This study presents a comprehensive investigation of the response of soil microbial communities to aeolian erosion–deposition and grazing in a semi-arid grassland. Our findings indicate that microbial communities in the semi-arid grassland show resistance to external disturbances and that light grazing mitigates the effects of aeo-lian erosion–deposition on microbial co

关键词：

Pathway Matters: Prefrontal Control of Negative Emotions via Distinct Downstream Regions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2022年第2期38卷 226-228页

作者： junqiang zheng Na Liu Han Xu Department of Neurobiology and Department of Neurology of the Second Affiliated Hospital Zhejiang University School of MedicineHangzhou 310058China NHC and CAMS Key Laboratory of Medical Neurobiology MOE Frontier Science Center for Brain Research and Brain-Machine IntegrationSchool of Brain Science and Brain MedicineZhejiang UniversityHangzhou 310058China

The infralimbic cortex(IL)is a major subregion of the medial prefrontal cortex(mPFC)that is essential for many advanced brain functions including *** studies have unraveled a critical role of the IL in the processing of negative emotions such as fear and ***,these studies also generate controversial data regarding the precise functions of the IL in the regulation of either fear or *** one hand,pharmacological inactivation of the IL attenuates anxiety-like behaviors and consistently,pharmacological activation of the IL produces anxiety-like behaviors[1].

关键词： inactivation precise Mount

一种考虑关节跃度约束的实时刀具路径光顺算法

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国机械工程 2024年第2期35卷 280-286页

作者：杜煦常泽鑫郑军强任鹏飞浙江理工大学机械工程学院杭州310018 杭州电子科技大学机械工程学院杭州310018

针对机器人加工过程中关节跃度超过约束的问题,提出一种考虑机器人关节跃度约束的刀具路径光顺算法。采用有限冲激响应滤波器插值算法对五轴刀具路径进行光顺处理,一步完成了路径光顺和速度规划。建立了关节与刀具之间的速度、加速度和... 详细信息

针对机器人加工过程中关节跃度超过约束的问题,提出一种考虑机器人关节跃度约束的刀具路径光顺算法。采用有限冲激响应滤波器插值算法对五轴刀具路径进行光顺处理,一步完成了路径光顺和速度规划。建立了关节与刀具之间的速度、加速度和跃度关系,通过调整时间常数保证了关节跃度不超过约束。考虑机器人关节加速度约束后,该算法计算出的时间常数更小。仿真和实验结果表明该算法能减小关节的跟踪误差,提高机器人的工作稳定性。

关键词：关节跃度约束五轴刀具路径光顺有限冲激响应滤波器插值机器人加工

维普期刊数据库博看期刊

同方期刊数据库

Lighting up Oxytocin Neurons to Nurture the Brain

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2023年第5期39卷 866-868页

作者： Fang Zhou junqiang zheng Han Xu Department of Neurobiology and Department of Neurology of the Second Affiliated Hospital Zhejiang University School of MedicineHangzhou 310058China Liangzhu Laboratory MOE Frontier Science Center for Brain Science and Brain-machine IntegrationState Key Laboratory of Brain-machine IntelligenceZhejiang UniversityHangzhou 311121China NHC and CAMS Key Laboratory of Medical Neurobiology Zhejiang UniversityHangzhou 310058China

The sensory system develops earlier than the systems responsible for higher brain functions such as language and cognition[1].Moreover,sensory experiences in early life are critical for the development of the ***,how sensory experiences shape brain development is an important yet unresolved question in *** work has demonstrated that deprivation of sensory inputs in the early developmental stage causes synaptic dysfunction in the sensory ***,it has been reported that oxytocin can restore the deficits caused by somatosensory deprivation in neonatal mice,suggesting that oxytocin may play a key role in sensory-mediated synaptogenesis[2].Vision is one of the most important sensory inputs during early development in mammalians including humans[1],but the neural mechanism underlying vision-mediated brain development is still largely unknown.

关键词： neonatal neural sensory

Rapid Eye Movement Sleep Consolidates Social Memory

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2023年第10期39卷 1598-1600页

作者： Jingkai Fan Fang Zhou junqiang zheng Han Xu Department of Neurobiology and Department of Neurology of the Second Afliated Hospital Zhejiang University School of MedicineHangzhou 310058China Liangzhu Laboratory MOE Frontier Science Center for Brain Science and Brain-Machine IntegrationState Key Laboratory of Brain-Machine IntelligenceZhejiang UniversityHangzhou 311121China NHC and CAMS Key Laboratory of Medical Neurobiology Zhejiang UniversityHangzhou 310058China Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province School of MedicineHangzhou City UniversityHangzhou 310015China

Social memory is one of declarative memory which is essential for animals to exhibit appropriate social *** suggests that the hippocampus,particularly the CA2 region,plays an important role in encoding and consolidating social memory[1].Rapid eye movement(REM)sleep has been suggested to contribute to social memory consolidation by up-regulating synaptic plasticity,local field potentials,and dendritic activity[2].

关键词： memory plasticity consolidation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

一体化容器云平台的研究与实践应用

中阿科技论坛（中英文） 2024年第2期 87-91页

作者：杨哲明瞿良勇倪智鹏郑小苗徐军郑俊强国家管网集团浙江省天然气管网有限公司浙江杭州310051

随着云技术的不断发展和普及,一体化容器云平台为软件开发、测试、部署和管理提供了高效率、全过程的工具链。在天然气行业快速发展的背景下,如何提高运营效率、降低成本并维护运营安全,已成为天然气运营管理企业亟待解决的问题。文章... 详细信息

随着云技术的不断发展和普及,一体化容器云平台为软件开发、测试、部署和管理提供了高效率、全过程的工具链。在天然气行业快速发展的背景下,如何提高运营效率、降低成本并维护运营安全,已成为天然气运营管理企业亟待解决的问题。文章通过对一体化容器云平台在天然气运营管理企业中的应用研究,探讨了其实施过程、优势、挑战以及未来发展方向。

关键词：天然气行业一体化容器云平台实践应用

强化实践内容的“机械原理”课程设计教学改革

在线全文

学校读者我要写书评

暂无评论

南方农机 2024年第4期55卷 192-194页

作者：唐斌刘征宏郑俊强钟丽琼贵阳学院机械工程学院贵州贵阳550005

为提高“机械原理”课程设计的质量,课题组成员结合当下行业发展趋势及贵阳学院“机械原理”课程设计现状,分析总结出贵阳学院现阶段“机械原理”课程设计在选题、设计过程、组织管理及评价考核方面存在的不足之处,并提出了对“机械原... 详细信息

为提高“机械原理”课程设计的质量,课题组成员结合当下行业发展趋势及贵阳学院“机械原理”课程设计现状,分析总结出贵阳学院现阶段“机械原理”课程设计在选题、设计过程、组织管理及评价考核方面存在的不足之处,并提出了对“机械原理”课程设计进行教学改革的一些思路和建议,即通过布置贴合实际课题的选题、设计过程增加制图实践内容、考核注重学生实践能力等手段,最大限度地使“机械原理”课程设计与社会生产实际接轨,培养学生的兴趣爱好、实践能力和工程意识,为向社会输送专业技能过硬的全面型人才创造条件。

关键词： “机械原理” 课程设计教学改革实践能力制图实践

在线全文

学校读者我要写书评

暂无评论

“机械制图”课程理实一体化教学改革路径

南方农机 2024年第5期55卷 172-174,178页

作者：唐斌刘征宏郑俊强钟丽琼贵阳学院机械工程学院贵州贵阳550005

针对“机械制图”课程理论教学与生产实践严重脱节的现状,课题组成员结合当代企业发展对人才专业技能的需求,讨论分析了现阶段课程理论教学中容易与生产实践脱节的部分及其原因,并尝试从教学内容、教学环节及教学评价体系这三个方面提... 详细信息

针对“机械制图”课程理论教学与生产实践严重脱节的现状,课题组成员结合当代企业发展对人才专业技能的需求,讨论分析了现阶段课程理论教学中容易与生产实践脱节的部分及其原因,并尝试从教学内容、教学环节及教学评价体系这三个方面提出对该课程进行理实一体化教学改革的建议。通过教学内容的推陈出新、教学环节的优化设计、评价体系注重实践能力的考量,最大限度地使课程理论教学与社会生产实际接轨,培养学生的工程意识和综合素质能力,为向社会输送专业技能过硬的全面型人才提供保障。

关键词： “机械制图” 理实一体化教学改革教学内容工艺实践

校企联合单片机专项训练提升职业能力的探索与实践——以贵阳学院机械工程学院为例

在线全文

学校读者我要写书评

暂无评论

天津科技 2024年第6期51卷 64-67页

作者：吴家福刘征宏胡浩郑俊强徐玉梁贵阳学院机械工程学院贵州贵阳550005

为缩短理论知识与工程应用的距离、提高学生技能与知识综合应用能力,从课程与工程应用之间的差距出发,开展校企联合实践训练方面的研究。分析单片机应用能力与职业能力的关系,探索校企联合单片机专项训练的组织实施途径,讨论单片机专项... 详细信息

为缩短理论知识与工程应用的距离、提高学生技能与知识综合应用能力,从课程与工程应用之间的差距出发,开展校企联合实践训练方面的研究。分析单片机应用能力与职业能力的关系,探索校企联合单片机专项训练的组织实施途径,讨论单片机专项训练对提升职业能力的促进作用,旨在探讨校企联合单片机专项训练对于提升学生职业能力的效果。

关键词：校企联合单片机专项训练职业能力