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Intraspecific leaf morphological variation in Quercus dentata Thunb.:a comparison of traditional and geometric morphometric methods,a pilot study

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Journal of Forestry Research 2022年第6期33卷 1751-1764页

作者： Kaiyu Yang Jianghao Wu Xinman Li Xinbo Pang yangchen yuan Guohui Qi Minsheng Yang College of Forestry Hebei Agricultural UniversityBaoding 071000HebeiPeople’s Republic of China Hebei Key Laboratory for Tree Genetic Resources and Forest Protection Baoding 071000HebeiPeople’s Republic of China Administration Bureau of Hongyashan State Owned Forest Farm in Yixian County Yixian 074200HebeiPeople’s Republic of China Research Center for Walnut Engineering and Technology of Hebei Lincheng 054300HebeiPeople’s Republic of China Institute of Walnut Industry Technology of Hebei Province(Xingtai) Lincheng 054300HebeiPeople’s Republic of China

To compare the application of traditional morphometric methods(TMMs)and geometric morphometric methods(GMMs)in the study of intraspecific leaf morphological characters of Quercus dentata,fifteen linear measurement indices and thirteen landmarks of leaves were used to study leaf morphology of three provenances(H1,H2,and H3).In TMMs,principal component analysis(PCA)showed that leaf size–related indices played an important role in population *** least square(PLS)analysis showed that the main morphological characters affecting leaf size were the average depth of the lobes and the length–width ***,the important indices to distinguish the provenances were circularity,leaf width,and length–width *** results of discriminant analysis(DA)showed that 74.0%of H1,68.0%of H2,and 74.0%of H3 were correctly *** analysis showed that the Mahalanobis distances between H1 and H2,H1 and H3,and H2 and H3 were 4.3761,11.4629,and 10.2067,*** GMMs,PCA based on symmetrical components showed that the difference in leaf morphology was mainly due to the changing trend of the leaf apex and base,petiole length,and degree of leaf *** analysis showed that there was a significant covariation between the leaf symmetrical components and size:as the leaf enlarged,the widest part gradually moved up,and the shape changed from nearly oval to *** results showed that 86.0%and 78.0%of H1 and H2,70.0%and 80.0%of H1 and H3,and 82.0%and 76.0%of H2 and H3 were correctly *** variate analysis results showed that the Mahalanobis distances between H1 and H2,H1 and H3,and H2 and H3 were 1.7238,1.5380,and 1.6329,*** GMMs and TMMs showed significant differences in morphology among the three *** provenances,but GMMs had higher classification accuracy and could provide more information about leaf shape,whereas TMMs could provide more information about leaf *** on our results,GMMs are promising in t

关键词： Traditional morphometrics Geometric morphometrics Leaf morphology variation Quercus dentata Intraspecific

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槭叶铁线莲(Clematis acerifolia Maxim.)群落物种生态位研究

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生态学报 2022年第8期42卷 3449-3457页

作者：庞久帅原阳晨周苗苗任俊杰高鹏成克武河北省洪崖山国有林场保定071000 河北农业大学保定071000

槭叶铁线莲(Clematis acerifolia)为太行山特有植物,但数量稀少且分布零散,其生存状况受到学者和政府部门的高度关注。本文通过对河北省易县葫芦峪沟谷新发现的槭叶铁线莲群落的典型样地调查,以物种重要值作为生态位计量指标,对各物种... 详细信息

槭叶铁线莲(Clematis acerifolia)为太行山特有植物,但数量稀少且分布零散,其生存状况受到学者和政府部门的高度关注。本文通过对河北省易县葫芦峪沟谷新发现的槭叶铁线莲群落的典型样地调查,以物种重要值作为生态位计量指标,对各物种生态位宽度、生态位重叠和生态位相似性进行了定量分析,对槭叶铁线莲的生存安全状况进行了评估。结果表明:在调查样地中共记录到14科15属17种植物,群落物种组成较为简单,槭叶铁线莲在大部分调查样地中的重要值最大,占据优势地位,其他物种重要值相对较低;群落内所有物种中,槭叶铁线莲的生态位宽度最大(B_(i)=6.264),绒毛绣线菊(Spiraea dasyantha)次之(B_(i)=5.144),其他种类较小;所有物种组成的136个种对中,生态位完全重叠(Q_(ik)=1)、重叠程度较高(0.5≤Q_(ik)<1)和重叠程度较低(Q_(ik)<0.5)的种对比例分别为8.09%、16.91%和75.00%,生态位完全相似(C;=1)、相似程度较高(0.5≤C;<1)和相似程度较低(C;<0.5)的种对比例分别为8.09%、5.88%和86.03%,大部分物种之间生态位重叠程度和相似性都处于较低水平;槭叶铁线莲与其他物种构成的16个种对中,62.50%的种对生态位重叠程度较低(Q_(ik)<0.5),81.25%的种对生态位相似性程度较低(C;<0.5),反映出群落内各物种间对资源和空间的竞争较为温和,群落较为稳定,槭叶铁线莲在其分布生境中生存状况相对安全;本文研究表明,利用生态位分析方法可以作为珍稀濒危物种生存状态和安全风险评估的一种方法。

关键词：生态位槭叶铁线莲重要值生态位宽度生态位重叠生态位相似性

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国槐不同器官转录组分析及EST-SSR引物开发应用

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西南林业大学学报（自然科学） 2022年第4期42卷 48-58页

作者：郁洁徐立人庞新博刘朝华李泳潭原阳晨董研河北农业大学林学院河北保定071000 河北省林木种质资源与森林保护重点实验室河北保定071000 河北农业大学园林与旅游学院河北保定071000 河北省洪崖山国有林场河北保定074200

以国槐品种“青云1号”的根、茎、叶3种不同器官为材料,利用高通量测序技术分别对其进行转录组测序,筛选其根、茎、叶差异表达基因,进行生物信息学分析及EST-SSR分析。通过转录组两两对比筛选得到的根vs.茎、根vs.叶及茎vs.叶差异基因... 详细信息

以国槐品种“青云1号”的根、茎、叶3种不同器官为材料,利用高通量测序技术分别对其进行转录组测序,筛选其根、茎、叶差异表达基因,进行生物信息学分析及EST-SSR分析。通过转录组两两对比筛选得到的根vs.茎、根vs.叶及茎vs.叶差异基因数分别为51 937、52 711和7 193条,进一步对其进行GO及KEGG富集分析。结果表明:差异基因显著富集于代谢过程、催化活性、糖酵解和糖质新生等功能。EST-SSR分析表明,国槐根、茎、叶的SSR序列长度均在10~80 bp间变化,主要以10~22 bp的短序列为主,且主要以单核苷酸重复为主,从30对有效性引物中筛选出9对多态性较高的引物,并构建了11个不同国槐无性系的指纹图谱。

关键词：国槐转录组基因 EST-SSR 遗传多样性

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Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu Zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

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The dopaminergic system and Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2495-2512页

作者： Yuhan Zhang yuan Liang Yixue Gu International Medical College Chongqing Medical UniversityChongqingChina College of Pharmacy Chongqing Medical UniversityChongqingChina Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of NeurologyChongqingChina

Alzheimer's disease is a common neurodegenerative disorder in older *** its prevalence,its pathogenesis remains unclea *** addition to the most widely accepted causes,which in clude excessive amyloid-beta aggregation,tau hyperphosphorylation,and deficiency of the neurotransmitter acetylcholine,numerous studies have shown that the dopaminergic system is also closely associated with the occurrence and development of this *** is a crucial catecholaminergic neurotransmitter in the human ***-associated treatments,such as drugs that target dopamine receptor D and dopamine analogs,can improve cognitive function and alleviate psychiatric symptoms as well as ameliorate other clinical *** r,therapeutics targeting the dopaminergic system are associated with various adverse reactions,such as addiction and exacerbation of cognitive *** review summarizes the role of the dopaminergic system in the pathology of Alzheimer's disease,focusing on currently available dopamine-based therapies for this disorder and the common side effects associated with dopamine-related *** aim of this review is to provide insights into the potential connections between the dopaminergic system and Alzheimer's disease,thus helping to clarify the mechanisms underlying the condition and exploring more effective therapeutic options.

关键词： adverse drug reaction Alzheimer's disease catecholamine dopamine receptor dopamine receptor heterodimers dopaminergic system neurodegenerative disease neurotransmitter signaling pathways traditional Chinese medicine treatment

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Sex differences in aging and injured brain

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Neural Regeneration Research 2025年第10期20卷 2901-2902页

作者： Jordan N.Williamson yuan Yang University of Illinois Urbana-Champaign Grainger College of EngineeringDepartment of BioengineeringUrbanaILUSA Carle Foundation Hospital Stephenson Family Clinical Research InstituteClinical Imaging Research CenterUrbanaILUSA University of Illinois Urbana-Champaign Beckman Institute for Advanced Science and TechnologyUrbanaILUSA Northwestern University Department of Physical Therapy and Human Movement SciencesChicagoILUSA

Background:The prevalence,age of onset,and symptomatology of traumatic brain injury,stroke,and neurodegenerative diseases(such as Alzheimer’s disease(AD),Parkinson’s disease,amyotrophic lateral sclerosis,and Huntington’s disease)differ substantially between males and *** higher prevalence of these brain disorders has been attributed to females having a greater longevity compared with *** one of the greatest risk factors of acquired brain injury(such as stroke,traumatic brain injury caused by fall)and neurodegenerative disease is age.

关键词： Huntington prevalence traumatic

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Peripheral mitochondrial DNA as a neuroinflammatory biomarker for major depressive disorder

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Neural Regeneration Research 2025年第6期20卷 1541-1554页

作者： Jinmei Ye Cong Duan Jiaxin Han Jinrong Chen Ning Sun yuan Li Tifei yuan Daihui Peng Division of Mood Disorder Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry First Hospital of Shanxi Medical UniversityTaiyuanShanxi ProvinceChina Shanghai Key Laboratory of Psychotic Disorders Brain Health InstituteNational Center for Mental DisordersShanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Co-Innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina

In the pathogenesis of major depressive disorder, chronic stress-related neuroinflammation hinders favorable prognosis and antidepressant response. Mitochondrial DNA may be an inflammatory trigger, after its release from stress-induced dysfunctional central nervous system mitochondria into peripheral circulation. This evidence supports the potential use of peripheral mitochondrial DNA as a neuroinflammatory biomarker for the diagnosis and treatment of major depressive disorder. Herein, we critically review the neuroinflammation theory in major depressive disorder, providing compelling evidence that mitochondrial DNA release acts as a critical biological substrate, and that it constitutes the neuroinflammatory disease pathway. After its release, mitochondrial DNA can be carried in the exosomes and transported to extracellular spaces in the central nervous system and peripheral circulation. Detectable exosomes render encaged mitochondrial DNA relatively stable. This mitochondrial DNA in peripheral circulation can thus be directly detected in clinical practice. These characteristics illustrate the potential for mitochondrial DNA to serve as an innovative clinical biomarker and molecular treatment target for major depressive disorder. This review also highlights the future potential value of clinical applications combining mitochondrial DNA with a panel of other biomarkers, to improve diagnostic precision in major depressive disorder.

关键词： biomarker cytokine exosomes inflammasome major depressive disorder microglia mitochondrial DNA mitochondrial dysfunction neuroinflammation Toll-like receptor

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Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan Miao Li Zhao Yajun Zhang Zhe yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for Nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

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Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng Cai Shengjun Miao yuan Li Yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

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“冀洪1号”黑枣与普通黑枣叶形性状差异研究

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林业与生态科学 2021年第2期36卷 132-137页

作者：庞丁玮王军原阳晨于海涛左树峰王进茂河北农业大学林学院河北保定071000 河北雾灵山国家级自然保护区管理中心河北兴隆067300 河北省洪崖山国有林场管理局河北易县074200

为探究黑枣遗传多样性及表型变异规律,对“冀洪1号”黑枣与普通黑枣的叶片形态差异进行了研究。叶片扫描成像后,使用Lamina软件对4个叶片形态指标进行测量(叶面积、叶周长、叶长和叶宽),计算其统计参数;使用Image J软件对叶片形态进行... 详细信息

为探究黑枣遗传多样性及表型变异规律,对“冀洪1号”黑枣与普通黑枣的叶片形态差异进行了研究。叶片扫描成像后,使用Lamina软件对4个叶片形态指标进行测量(叶面积、叶周长、叶长和叶宽),计算其统计参数;使用Image J软件对叶片形态进行标点并通过Morpho J软件进行主成分分析(PCA)、薄板样条分析及判别分析。方差分析结果显示,“冀洪1号”黑枣与普通黑枣的叶形性状存在较大的种间差异,“冀洪1号”黑枣的叶片较大,但其变异幅度较小。基于Morpho J软件叶形变异主成分分析的结果显示,第一主成分(PC1)和第二主成分(PC2)共占总体变量的63.447%(分别为50.537%和12.910%),薄板样条网格图结果显示,“冀洪1号”黑枣与普通黑枣形态相似,仅在叶柄及叶片最大宽度处有微小差异。基于Lamina软件和Morpho J软件对“冀洪1号”黑枣与普通黑枣叶片进行比较,能够找出叶片间的微小差别,并且对发现叶形变异与植物遗传多样性的关系有积极作用。

关键词：黑枣叶形性状几何形态学冀洪1号亲缘关系

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