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Structural and functional connectivity of the whole brain and subnetworks in individuals with mild traumatic brain injury:predictors of patient prognosis

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Neural Regeneration Research 2024年第7期19卷 1553-1558页

作者： Sihong Huang Jungong Han Hairong Zheng Mengjun Li Chuxin Huang Xiaoyan Kui Jun Liu Department of Radiology The Second Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Department of Computer Science Aberystwyth UniversityAberystwythCeredigionUK Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhenGuangdong ProvinceChina School of Computer Science and Engineering Central South UniversityChangshaHunan ProvinceChina Department of Radiology Quality Control Center of Hunan ProvinceChangshaHunan ProvinceChina Clinical Research Center for Medical Imaging of hunan Province ChangshaHunan ProvinceChina

Patients with mild traumatic brain injury have a diverse clinical presentation,and the underlying pathophysiology remains poorly *** resonance imaging is a non-invasive technique that has been widely utilized to investigate neuro biological markers after mild traumatic brain *** approach has emerged as a promising tool for investigating the pathogenesis of mild traumatic brain injury.G raph theory is a quantitative method of analyzing complex networks that has been widely used to study changes in brain structure and ***,most previous mild traumatic brain injury studies using graph theory have focused on specific populations,with limited exploration of simultaneous abnormalities in structural and functional *** that mild traumatic brain injury is the most common type of traumatic brain injury encounte red in clinical practice,further investigation of the patient characteristics and evolution of structural and functional connectivity is *** the present study,we explored whether abnormal structural and functional connectivity in the acute phase could serve as indicators of longitudinal changes in imaging data and cognitive function in patients with mild traumatic brain *** this longitudinal study,we enrolled 46 patients with mild traumatic brain injury who were assessed within 2 wee ks of injury,as well as 36 healthy ***-state functional magnetic resonance imaging and diffusion-weighted imaging data were acquired for graph theoretical network *** the acute phase,patients with mild traumatic brain injury demonstrated reduced structural connectivity in the dorsal attention *** than 3 months of followup data revealed signs of recovery in structural and functional connectivity,as well as cognitive function,in 22 out of the 46 ***,better cognitive function was associated with more efficient ***,our data indicated that small-worldness in the acute sta

关键词： cognitive function cross-section follow-up functional connectivity graph theory longitudinal study mild traumatic brain injury prediction small-worldness structural connectivity subnetworks whole brain network

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Osteology of Leptobrachella bijie(Anura,Megophryidae)

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Asian Herpetological Research 2024年第2期15卷 90-103页

作者： Wei LI Meihua ZHANG Zhonghao LUO Jing LIU Tuo SHEN Bo CHEN Haijun SU Bin WANG College of forestry Guizhou UniversityGuiyang 550025GuizhouChina Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041SichuanChina

The Asian leaf litter toad genus Leptobrachella contains more than 100 species widely distributed in southwestern ***,the systematic profiles of this group remain *** morphology is important for taxonomic and phylogenetic ***,few studies have focused on the osteology of the ***,we comprehensively described the osteological features of a representative species *** based on micro-CT scanning and double-staining *** results show that the skull of adult *** is well-ossified,exhibiting sexual dimorphism and minimal intraspecific *** skull length is slightly greater than the width,with the maxilla slightly overlapping with the *** nasal connects with the sphenethmoid in males,but only part or not connects with the sphenethmoid in *** transverse processes of the sacrum are robust and symmetrically butterfly-shaped,and the presacral vertebrae are *** pectoral girdle is *** phalangeal formula is 2-2-3-3 for the hand,and 2-2-3-4-3 for the *** study provides the first detailed and comprehensive osteological accounts of the genus Leptobrachella.

关键词： sexual dimorphism skeleton taxonomy

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Enhancing cellular behavior in repaired tissue via silk fibroin-integrated triboelectric nanogenerators

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Microsystems & Nanoengineering 2024年第3期10卷 137-147页

作者： Zhelin Li Shuxing Xu Zijie Xu Sheng Shu Guanlin Liu Jianda Zhou Ding Lin Wei Tang Changsha Aier Eye Hospital Aier School of OphthalmologyCentral South UniversityChangshaHunanChina The Xiangya Hospital Central South UniversityChangshaHunanChina Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China Center on Nanoenergy Research School of Physical Science&TechnologyGuangxi UniversityNanning 530004China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Department of Plastic Surgery the Third Xiangya HospitalChangshaHunanChina

Triboelectric nanogenerators(TENGs)have emerged as a promising approach for generating electricity and providing electrical stimuli in medical electronic *** their potential benefits,the clinical implementation of TENGs faces challenges such as skin compliance and a lack of comprehensive assessment regarding their biosafety and ***,further research is imperative to overcome these limitations and unlock the full potential of TENGs in various biomedical *** this study,we present a flexible silk fibroin-based triboelectric nanogenerator(SFB-TENG)that features an on-skin substrate and is characterized by excellent skin compliance and air/water *** range of electrical output generated by the SFB-TENG was shown to facilitate the migration and proliferation of Hy926,NIH-3T3 and RSC96 ***,apoptosis of fibroblast NIH-3T3 cells was observed when the output voltage increased to more than 20 V at a frequency of 2 *** addition,the moderate electrical stimulation provided by the SFB-TENG promoted the cell proliferation cycle in Hy926 *** research highlights the efficacy of a TENG system featuring a flexible and skin-friendly design,as well as its safe operating conditions for use in biomedical *** findings position TENGs as highly promising candidates for practical applications in the field of tissue regeneration.

关键词： overcome spite generating

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Electronic and Thermoelectric Properties in SnS-Nanoribbon-Based Heterojunctions

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Chinese Physics Letters 2024年第9期41卷 63-68页

作者： Kai-Bo Zhang Shi-Hua Tan Xiao-Fang Peng Meng-Qiu Long hunan Province Key Laboratory of Materials Surface or Interface Science and Technology Central South University of Forestry and TechnologyChangsha 410004China School of Physics and Electronics Central South UniversityChangsha 410083China

As an earth-abundant and environmentally friendly material,tin sulfide(SnS)is not only a high-performance photovoltaic material,but also a new promising thermoelectric *** extensive research on the thermoelectric properties of this material in recent years,the room-temperature thermoelectric figure of merit(ZT)of SnS has not been broke through 2[2022 *** Mater.651143].In this work,based on a combination of density functional theory and non-equilibrium Green’s function method,the electronic and thermoelectric properties in SnS-nanoribbon-based heterojunctions are *** results show that although SnS nanoribbons(SNSNRs)with zigzag edges(ZSNSNRs)and armchair edges(ASNSNRs)both have semiconductor properties,the bandgaps of ASNSNRs are much wider than those of ZSNSNRs,which induces much wider conductance gaps of𝑁-ASNSNR(N𝑁is the number of tin-sulfide lines across the ribbon width)).In the positive energy region,the ZT peaks of𝐿L-SNS-Au are much larger than those of𝐿L-SNS-GNR(L𝐿represents the number of longitudinal repeating units of SNSNR in the scattering region).While in the positive energy region,the ZT peaks of𝐿-SNSGNR are larger than those of𝐿-*** calculations reveal that the figure of merit will be over 3.7 in L-SNS-Au and 2.2 in𝐿L-SNS-GNR at room temperature,and over 4 in𝐿L-SNS-Au and 2.6 in𝐿L-SNS-GNR at 500 K.

关键词： material. sulfide ribbon

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Variability of urban fractional vegetation cover and its driving factors in 328 cities in China

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Science China Earth Sciences 2024年第2期67卷 466-482页

作者： Fei FENG Xin YANG Baoquan JIA Xiaoting LI Xianwen LI Chengyang XU Kaicun WANG Research Centre of Urban forestry Key Laboratory for Silviculture and Forest Ecosystem of State Forestry and Grassland AdministrationBeijing Forestry UniversityBeijing100083China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing100875China Research Institute of forestry Chinese Academy of ForestryBeijing100091China School of Architecture Tsinghua UniversityBeijing100084China College of Urban and Environmental Sciences Sino-French Institute for Earth System ScienceInstitute of Carbon NeutralityPeking UniversityBeijing100871China

Urban green space promotes the health of urban residents,enhances urban ecosystem biodiversity,mitigates environmental pollution,and attenuates urban heat island ***,urban vegetation cover is highly heterogeneous and difficult to *** this study,the variation of urban fractional vegetation cover(FVC)in 328 cities in China from 1990 to2022 was quantified based on Landsat satellite data at a 30-m *** was found that from 1990 to 2005,due to increases in building density and impervious surfaces in cities,the national mean urban vegetation cover decreased from 0.38 to ***2005,urban vegetation cover began to reverse,reaching 0.45 in *** increasing trend was most pronounced in newly built urban *** decrease in average urban vegetation cover before 2005 was mainly due to the expansion of low vegetation cover areas,while the increase in urban vegetation cover after 2005 manifested as the expansion of high vegetation cover *** reversal in the trend of urban vegetation cover change after 2004 is related to the gradual implementation of national policies requiring increased urban green space *** urban gross domestic product(GDP)showed the highest correlation with changes in urban vegetation *** large and medium-sized cities,the top three factors influencing vegetation cover were GDP,urban population,and ***,for cities in arid/semi-arid regions,changes in vegetation cover were more sensitive to climatic factors(such as precipitation).Although the urban vegetation cover in China has substantially increased in recent years,the urban green space in small-sized cities and in the old urban districts of large-sized cities still have room to improve.

关键词： Urban vegetation Urban vegetation cover Urbanization Remote sensing

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Sclerodermus alternatusi(Hymenoptera:Bethylidae),a new species from China,parasitizing Monochamus alternatus(Coleoptera:Cerambycidae)

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Zoological Systematics 2024年第3期49卷 258-266页

作者： Zhongqi Yang Xiaoyi Wang Zhaoyao Duan Yanlong Zhang Yi’nanZhang Liangming Cao Ke Wei Key Lab of Forest Protection National Forestry and Grassland AdministrationEcology and Nature Conservation InstituteChinese Academy of ForestryBeijing 100091China Research Institute of Biological Control Beijing Vocational College of AgricultureBeijing 102442China Research Institute of Forest Protection Yunnan Academy of Forestry and GrasslandKunming 650201China

A new species,Sclerodermus alternatusi Yang,***.(Hymenoptera:Bethylidae),is described and *** cerambycid host,Monochamus alternatus Hope,a severe wood borer attacking many pine trees(Pinus spp.),is also a vector of pine wood nematode,Bursaphelencus xylophilus,which cause severe damages to pine forests in *** new species is a gregarious ectoparasitoid of junior larva of *** number of adult wasps reared from a single host larva ranges from 6 to *** ratio of female to male is 20:*** new parasitoid species has a high potential in using as a biocontrol agent for the wood *** of the new species with comparisons to its related species,*** Yang&Yao and a key to known species of Sclerodermus from China is provided.

关键词： Ectoparasitoid larval parasitoid taxonomy biological control

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Alkyl Radical Initiated Cyclization/Cascade for Synthesizing Lactam-Substituted Alkyl Sulfones

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Chinese Journal of Chemistry 2024年第16期42卷 1853-1859页

作者： Li-Jun Wu Kai-Yi Zhang Pei Yang Chuan-Chong Peng Jin-Hui Liu Qing Li Da-Zhi Sun Shuangfeng Yin College of Sciences Central South University of Forestry and TechnologyChangshaHunan410004 China School of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhotInner Mongolia010021 China

An alkyl radical initiated cyclization/tandem reaction of alkyl bromides and alkyl electrophiles by using potassium metabisulphite(K_(2)S_(2)O_(5))as a connector is developed for the synthesis of various lactam-substituted alkyl ***,this process does not require a metal catalyst or metal powder reductant,highlighting its environmentally friendly *** reaction demonstrates outstanding substrate adaptability and a high tolerance towards diverse functional ***,the biologically active molecules and commercially available drugs with a late-stage modification are also highly compatible with this *** studies revealed that the reaction proceeds through a single-step process involving intramolecular radical cyclization,"SO_(2)"insertion,and external alkyl incorporation.

关键词： Alkyl radical Metal-free catalyzed Cyclization/cascade Potassium metabisulphite Electrophiles Alkyl sulfones Lactams Alkyl bromides Sodium formate

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An ecological perspective on Joseph Rock’s(1884-1962)plant collection activities in China

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Journal of Plant Ecology 2024年第4期17卷 100-113页

作者： Jifan Luo Ruozhi Huang Hai Yan Renwu Wu Shuai Liao Zhoubing Xiang Yongxi Zou Liangchen Shi Ke Wang Zhiyi Bao College of Landscape Architecture Zhejiang Agriculture and Forestry UniversityHangzhou 311300China Zhejiang Agriculture and forestry University Landscape Architecture Institute Hangzhou 311300China South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China

In the early 20th century,numerous western botanists,often referred to as‘plant hunters’,embarked on ambitious expeditions to China,playing a crucial role in the study of botany and botanical *** their contributions,comprehensive assessments of their explorations are *** bridge this gap,this article focuses on the work of Joseph Charles Francis Rock,a notable figure in that *** work revisits Rock’s botanical expeditions within the broader context of botanical diversity *** outlines his historical experiences in collecting plants in China and enumerates the species composition and phenotypic traits of the plants he ***,it also analyzes the spatial distribution of the species,the completeness of his collection and the α-and β-diversity of the plants he *** findings reveal that Rock led four major botanical expeditions in China between 1922 and 1933,amassing a total of 28184 sheets and 16608 numbers across 204 families,1081 genera and 4231 *** focus was predominantly on ornamental species,which exhibit a variety of flower colors and *** collection work spanned 5 provinces,35 cities and 72 counties,with a notable concentration in the Hengduan Mountains,a current biodiversity *** study not only reconstructs Rock’s botanical legacy but also offers valuable historical data and fresh analytical insights for understanding contemporary plant *** contributes to the ongoing discourse on the importance of preserving plant diversity as a cornerstone of environmental sustainability.

关键词： Joseph Charles Francis Rock plant specimen collection history plant diversity plant collector

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LociScan,a tool for screening genetic marker combinations for plant variety discrimination

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The Crop Journal 2024年第2期12卷 583-593页

作者： Yang Yang Hongli Tian Hongmei Yi Zi Shi Lu Wang Yaming Fan Fengge Wang Jiuran Zhao Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding Maize Research InstituteBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China

To reduce the cost and increase the efficiency of plant genetic marker fingerprinting for variety discrimination,it is desirable to identify the optimal marker *** describe a marker combination screening model based on the genetic algorithm(GA)and implemented in a software tool,Loci ***-based variety discrimination power provided the largest optimization space among multiple fitness *** GA parameters,an increase in population size and generation number enlarged optimization depth but also calculation *** algorithm afforded the same optimization depth as GA but vastly increased calculation *** comparison with two other software tools,Loci Scan accommodated missing data,reduced calculation time,and offered more fitness *** large datasets,the sample size of training data exerted the strongest influence on calculation time,whereas the marker size of training data showed no effect,and target marker number had limited effect on analysis speed.

关键词： Plant variety discrimination Genetic marker combination Variety discrimination power Genetic algorithm

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On Minor Left Prime Factorization Problem for Multivariate Polynomial Matrices

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Journal of Systems Science & Complexity 2024年第3期37卷 1295-1307页

作者： LU Dong WANG Dingkang XIAO Fanghui School of Mathematics Southwest Jiaotong UniversityChengdu 610031China KLMM Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China MOE-LCSM School of Mathematics and StatisticsHunan Normal UniversityChangsha 410081China

A new necessary and sufficient condition for the existence of minor left prime factorizations of multivariate polynomial matrices without full row rank is *** key idea is to establish a relationship between a matrix and any of its full row rank *** on the new result,the authors propose an algorithm for factorizing matrices and have implemented it on the computer algebra system *** examples are given to illustrate the effectiveness of the algorithm,and experimental data shows that the algorithm is efficient.

关键词： Free modules Grobner bases minor left prime(MLP) multivariate polynomial matrices polynomial matrix factorizations

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