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Morphological characteristics of tree crowns of Cunninghamia lanceolata var. Luotian

Journal of Forestry Research 2020年第3期31卷 837-856页

作者： Yezhou Xu Chaoqun Du Guowei Huang Zhenfang Li Xiangyang Xu jingjin zheng Chu Wu Hubei Academy of Forestry Wuhan 430075People’s Republic of China Forestry Bureau of Luotian County Huanggang 438000People’s Republic of China College of Horticulture and Gardening Yangtze UniversityJingzhou 434025HubeiPeople’s Republic of China

The structural characteristics of the tree crowns of Cunninghamia lanceolata var. Luotian(herein, Luotian), a natural variety of C. lanceolata(Chinese-fir, herein Lanceolata) in China, were analyzed using trunk and branch measurements and biomass determinations. Samples from two typical cultivated varietal populations were collected, including twenty-six 15–23-year-old trees of Luotian from a plantation, and nine 16–23-year-old trees of Lanceolata. Our results show that Luotian and Lanceolata samples differed significantly in crown structure, morphological indices, and biomass:(1) the oldest live branches on Luotian trees were 5–6 years old and 8–11 years old on Lanceolata. The ages of the live branches were not affected by the ages of the Luotian trees, while live branch ages increased with ages of Lanceolata trees;(2) the maximumbranching order of Luotian was level two. Compared to Lanceolata, the average number of first-order lateral branches(i.e., branches emerging from the trunk) and the number of first-order lateral branch whorls per sample tree were 12.9% and 32.2% lower, respectively, in ***, the average number of branches within a single whorl was 21.8% greater in Luotian;the average number of branch whorls at crown height was 51.1% greater. Thus,the Luotian variety has thicker branches;(3) the average lateral branch angles in Luotian and Lanceolata sample trees were 105.2° and 61.4°, respectively. The branch angles in 53.0% of lateral branches on Luotian ranged from105° to 135°, but 30° to 90° in 96% of the lateral branches on Lanceolata. Within the same crown layer, the average branch angle was 1.6–2.2 times greater in Luotian, and the angle was directly proportional to crown thickness;(4) the average base diameter and branch length on Luotian were1.3 cm and 75.8 cm, respectively, and 1.6 cm and112.2 cm for Lanceolata. For individual trees, branch growth differed significantly(p < 0.01) between Luotian and Lanceolata. However, the lateral bran

关键词： Cunninghamia lanceolata var Luotian Cunninghamia lanceolata Tree crown Morphological characteristics Variation

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林业科技期刊的办刊现状及发展路径探讨——以《湖北林业科技》为例

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中国科技期刊研究 2018年第8期29卷 860-865页

作者：郑京津袁传武蔡三山张家来湖北省林业科学研究院

【目的】随着国家对生态文明的重视,人民对优美生态环境的需要,林业科技期刊作为林业科学知识的传播媒介,在生态文明建设中的作用愈来愈重要。探索中文期刊的办刊之路,为切实提高办刊质量提供参考。【方法】以《湖北林业科技》为例,分... 详细信息

【目的】随着国家对生态文明的重视,人民对优美生态环境的需要,林业科技期刊作为林业科学知识的传播媒介,在生态文明建设中的作用愈来愈重要。探索中文期刊的办刊之路,为切实提高办刊质量提供参考。【方法】以《湖北林业科技》为例,分析目前林业科技期刊的办刊现状,针对期刊发展中存在的体制改革、稿源不足、稿件缺乏严格把关、办刊动力不足、自身推广不力、刊发文章内容混杂、低水平运行难有突破等质量问题以及人才队伍建设问题,探讨期刊的发展路径。【结果】提出编营分离模式,契合定位、做强主业,以及走专家学者办刊之路等办刊策略。【结论】符合自身发展特点的编营分离模式能为林业科技期刊提供好的办刊思路和办法,促进中文期刊打破发展瓶颈。

关键词：林业科技期刊体制改革发展路径《湖北林业科技》

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林窗对日本落叶松人工林林下植物多样性的短期影响

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西南林业大学学报（自然科学） 2016年第2期36卷 103-107页

作者：汤景明孙拥康徐红梅郑京津湖北省林业科学研究院湖北武汉430075

采用样方法调查了鄂西建始县国有长岭岗林场日本落叶松人工林林窗及林下植物多样性,运用4种常用的物种多样性指数分析了林窗干扰对日本落叶松人工林植物多样性的影响。结果表明：林窗内木本植物和草本植物的物种数、Shannon-wiener指数... 详细信息

采用样方法调查了鄂西建始县国有长岭岗林场日本落叶松人工林林窗及林下植物多样性,运用4种常用的物种多样性指数分析了林窗干扰对日本落叶松人工林植物多样性的影响。结果表明：林窗内木本植物和草本植物的物种数、Shannon-wiener指数、Simpson指数显著高于非林窗,Pielou指数亦高于非林窗,但差异不显著;不同大小级林窗的物种多样性表现出中林窗（50~100 m2）〉小林窗（〈50 m2）〉大林窗（〉100 m2）;林窗内物种多样性高于非林窗,但林窗中的木本植物和草本植物的优势种不明显,处于种群间竞争与共存阶段。日本落叶松人工林草本植物的多样性高于木本植物,林窗对林下植物多样性的影响主要是通过影响草本层而引起的。在森林经营实践中,要重视草本植物在林窗形成初期对人工林生物多样性的拓展作用,并通过模拟林窗干扰实行群团状择并在林窗中补植阔叶树种,提高鄂西山区日本落叶松人工林的植物多样性。

关键词：日本落叶松人工林林窗植物多样性鄂西山区

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基于5项评价指标探讨《湖北林业科技》办刊质量的提升

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天津农业科学 2017年第3期23卷 106-112页

作者：郑京津王瑞文湖北省林业科学研究院湖北武汉430075

以《中国学术期刊影响因子年报》2009—2015年的统计数据为基础,综合选取复合影响因子、综合总被引、基金论文比、总下载量、他引总引比等5项评价指标,对比分析了《湖北林业科技》与全国23种省级林业期刊的情况,并对《湖北林业科技》办... 详细信息

以《中国学术期刊影响因子年报》2009—2015年的统计数据为基础,综合选取复合影响因子、综合总被引、基金论文比、总下载量、他引总引比等5项评价指标,对比分析了《湖北林业科技》与全国23种省级林业期刊的情况,并对《湖北林业科技》办刊质量的进一步提升提出对策和建议。

关键词：林业期刊《湖北林业科技》评价指标统计分析策略与建议

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黄冈市城区绿地小气候效益计量

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湖北林业科技 2010年第3期39卷 6-9页

作者：郑京津张家来湖北省林业科学研究院武汉430075

基于2009年黄冈城区典型样地单位附属绿地、道路绿地、居住区绿地、生产绿地、防护绿地6种类型绿地面积计算小气候效益,结果表明:改善小气候效益分别为:防护绿地34.84万元/hm2.a>公园绿地16.07万元/hm2.a>道路绿地6.33万元/hm2.a>单位... 详细信息

基于2009年黄冈城区典型样地单位附属绿地、道路绿地、居住区绿地、生产绿地、防护绿地6种类型绿地面积计算小气候效益,结果表明:改善小气候效益分别为:防护绿地34.84万元/hm2.a>公园绿地16.07万元/hm2.a>道路绿地6.33万元/hm2.a>单位附属绿地6.30万元/hm2.a>生产绿地6.26万元/hm2.a>居住区绿地2.51万元/hm2.a。使用便携式气象仪Kestrel NK4000测定其空气温度,计算城市森林夏季降温和冬季增温的效益,通过货币化的方式直观的反映黄冈城区绿地改善小气候的效益。以此为实例进行森林生态效益相关问题的探讨,提高人们对城市森林,改善居住环境重要性的认识。

关键词：小气候效益城区绿地面积黄冈城区

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The role of axon guidance molecules in the pathogenesis of epilepsy

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Neural Regeneration Research 2025年第5期20卷 1244-1257页

作者： zheng Liu Chunhua Pan Hao Huang Department of Neurology Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhou ProvinceChina

Current treatments for epilepsy can only manage the symptoms of the condition but cannot alter the initial onset or halt the progression of the disease. Consequently, it is crucial to identify drugs that can target novel cellular and molecular mechanisms and mechanisms of action. Increasing evidence suggests that axon guidance molecules play a role in the structural and functional modifications of neural networks and that the dysregulation of these molecules is associated with epilepsy susceptibility. In this review, we discuss the essential role of axon guidance molecules in neuronal activity in patients with epilepsy as well as the impact of these molecules on synaptic plasticity and brain tissue remodeling. Furthermore, we examine the relationship between axon guidance molecules and neuroinflammation, as well as the structural changes in specific brain regions that contribute to the development of epilepsy. Ample evidence indicates that axon guidance molecules, including semaphorins and ephrins, play a fundamental role in guiding axon growth and the establishment of synaptic connections. Deviations in their expression or function can disrupt neuronal connections, ultimately leading to epileptic seizures. The remodeling of neural networks is a significant characteristic of epilepsy, with axon guidance molecules playing a role in the dynamic reorganization of neural circuits. This, in turn, affects synapse formation and elimination. Dysregulation of these molecules can upset the delicate balance between excitation and inhibition within a neural network, thereby increasing the risk of overexcitation and the development of epilepsy. Inflammatory signals can regulate the expression and function of axon guidance molecules, thus influencing axonal growth, axon orientation, and synaptic plasticity. The dysregulation of neuroinflammation can intensify neuronal dysfunction and contribute to the occurrence of epilepsy. This review delves into the mechanisms associated with

关键词： axon guidance drug-resistant epilepsy epilepsy nerve regeneration nervous system diseases neural pathways neuroinflammatory diseases neuronal plasticity neurons synaptic remodeling

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Effect of a Carbon Fibre-steel Fibre-graphite Conductive Filler on the Electrothermal Properties of Cementitious Materials

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 141-151页

作者： FAN Yanan WEI Hong zheng Hongyong DU Hongxiu Department of Architecture and Environmental Engineering Taiyuan UniversityTaiyuan 030032China College of Civil Engineering Taiyuan University of TechnologyTaiyuan 030032China

Carbon fibre,steel fibre and graphite were used as conductive fillers to prepare cementitious materials with excellent electrothermal *** electrically conductive cementitious materials with different volume dosages were analysed through compressive and flexural strength,electrochemical impedance spectroscopy and temperature rise *** equivalent circuit model was established to study the electrically conductive heat generation mechanism in the electrically conductive cementitious *** results indicate that the mechanical properties of cementitious composite materials with a ternary conductive phase are better than those of pristine cementitious materials because the fibrous filler improves their mechanical ***,the incorporation of graphite in the material reduces its *** fibrous and point-like conductive phase materials into the cementitious material enhances the overall conductive pathway and considerably reduces the electrical resistance of the cementitious material,enhancing its conductive *** volume ratios of carbon fibre,steel fibre and graphite that achieve an optimal complex doping in the cementitious material were 0.35%,0.6%and 6%,*** was determined using the mutation point of each circuit element parameter as the percolation *** addition,at a certain safety voltage,there is a uniform change between the internal and surface temperatures of the conductive cementitious material,and the heating effect in this materialis is considerably better than that in the pristine cementitious material.

关键词： cementitious composites conductive fillers electrothermal properties electrochemical impedance spectroscopy

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可穿戴技术在情绪识别中的应用进展及发展趋势

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纺织学报 2022年第8期43卷 197-205页

作者：刘欢欢王朝晖叶勤文陈子唯郑婧瑾东华大学服装与艺术设计学院上海200051 东华大学现代服装设计与技术教育部重点实验室上海200051 上海市智能制造与工程一带一路国际联合实验室上海200051

为促进情绪识别智能可穿戴产品技术在纺织服装领域的创新发展,系统介绍了近些年国内外情绪识别监测内容方法、分类算法以及情绪识别可穿戴设备的研究现状。首先概述了情绪分类模型并总结情绪产生时出现的生理反应;然后针对目前情绪识别... 详细信息

为促进情绪识别智能可穿戴产品技术在纺织服装领域的创新发展,系统介绍了近些年国内外情绪识别监测内容方法、分类算法以及情绪识别可穿戴设备的研究现状。首先概述了情绪分类模型并总结情绪产生时出现的生理反应;然后针对目前情绪识别监测内容方法的研究现状,阐述了生理信号和行为表现二大类情绪识别监测内容方法,进一步总结常用情绪识别分类算法,并依据可穿戴设备部位总结现有情绪识别可穿戴产品;最后讨论了情绪识别智能可穿戴设备在未来发展中需要解决的问题,并从柔性舒适采集设备、识别结果准确度以及识别结果交互方式3个方面展望其未来发展趋势和应用前景。

关键词：情绪识别机器学习情绪模型智能可穿戴生理信号行为表现

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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng zheng Wang Zhou Ying Mo Biao zheng Miaomiao Han Qin Zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

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Pyroptosis,ferroptosis,and autophagy in spinal cord injury:regulatory mechanisms and therapeutic targets

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Neural Regeneration Research 2025年第10期20卷 2787-2806页

作者： Qingcong zheng Du Wang Rongjie Lin Weihong Xu Department of Spinal Surgery the First Affiliated Hospital of Fujian Medical UniversityFuzhouFujian ProvinceChina Arthritis Clinical and Research Center Peking University People’s HospitalBeijingChina Department of Orthopedic Surgery Fujian Medical University Union HospitalFuzhouFujian ProvinceChina

Regulated cell death is a form of cell death that is actively controlled by *** studies have shown that regulated cell death plays a key role after spinal cord *** and ferroptosis are newly discovered types of regulated cell deaths that have been shown to exacerbate inflammation and lead to cell death in damaged spinal ***,a complex form of cell death that is interconnected with various regulated cell death mechanisms,has garnered significant attention in the study of spinal cord *** injury triggers not only cell death but also cellular survival *** signaling pathways play pivotal roles in influencing the processes of both deterioration and repair in spinal cord injury by regulating pyroptosis,ferroptosis,and ***,this review aims to comprehensively examine the mechanisms underlying regulated cell deaths,the signaling pathways that modulate these mechanisms,and the potential therapeutic targets for spinal cord *** analysis suggests that targeting the common regulatory signaling pathways of different regulated cell deaths could be a promising strategy to promote cell survival and enhance the repair of spinal cord ***,a holistic approach that incorporates multiple regulated cell deaths and their regulatory pathways presents a promising multi-target therapeutic strategy for the management of spinal cord injury.

关键词： autophagy cell death ferroptosis inflammation pathological mechanisms pyroptosis regulated cell death regulatory pathways spinal cord injury therapeutic targets

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