检索结果-南通市图书馆

Passive activity enhances residual control ability in patients with complete spinal cord injury

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： yanqing xiao Mingming Gao Zejia He jia Zheng Hongming Bai jia-Sheng Rao Guiyun song Wei song xiaoguang li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng song Ihar Razanau Juanxiu xiao Wei xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

Analysis of the anti-T2DM components in dichloromethane fraction of Schisandra sphenanthera and its mechanism

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Traditional Medicine Research 2025年第1期10卷 27-43页

作者： Shi-Bo Feng Hai-Hui jiang Hui-li Kang Yi jiang Hua-Wei Zhang xiao-Mei song Yu-Ze li wen-li Huang Dong-Dong Zhang Chong Deng School of Pharmacy Shaanxi University of Chinese MedicineXianyang 712046China School of Pharmacy and Shaanxi Qinling Application Development and Engineering Center of Chinese Herbal Medicine Shaanxi University of Chinese MedicineXianyang 712046China Key Laboratory for Research and Development of“Qin Medicine”of Shaanxi Administration of Traditional Chinese Medicine Xianyang 712046China Shaanxi Key Laboratory of Research and Application of“Taibai Qi Yao” Xianyang 712046China

Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic ***,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was ***:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood ***,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were *** 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal *** on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was ***:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control *** SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric ***:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in *** against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.

关键词： Schisandra sphenanthera T2DM intestinal flora HPLC

Synergistically enhanced ORR and HER performance on Co-N-C coupled in-situ generated PtCo intermetallic

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

Journal of Energy Chemistry 2025年第1期100卷 721-729页

作者： Guanyu Luo Min song Lulu An xiao Huang Qian Zhang Chenhao Zhang Tao Shen Shuang Wang Deli Wang Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology

Integrating multi-scale sites in a composite catalyst is vital to realize efficient ***,a synergistic composite catalyst consisting of Co atomic sites and in-situ generated PtCo intermetallic compounds （IMCs）(o-PtCo@CoNC) is proposed through Co pre-anchoring and subsequent impregnation-reduction *** loading of Co atoms provides a chance for in-situ generating PtCo ordered intermetallic *** remaining Co single atoms and PtCo IMCs construct synergistic electrocatalytic *** from the ordered structure,synergistic effect of Pt Co IMCs and Co single atoms,o-PtCo@CoNC exhibits excellent electrocatalytic performance for oxygen reduction reaction （ORR） and hydrogen evolution reaction （HER） with mass activity of 1.21 A mgPt-1（at 0.9 V） and5.70 A mgPt-1（at an overpotential of 100 mV）,***,o-PtCo@CoNC delivers negligible loss of half-wave potential and overpotential during long-term stability test in acid solutions,with 13 mV decay after 50,000 potential cycles for ORR and a 2.7 mV decay after 20,000 potential cycles for *** integration strategy of single-atomic sites coupled IMCs paves the way for enhancing the activity and durability of Pt-based electrocatalysts.

关键词： Electrolytic reduction

α_(2) phase precipitation behavior and tensile properties at room temperature and 650℃ in an(α+β) titanium alloy

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2021年第11期40卷 3261-3268页

作者： wen-Jing Zhang xiao-Yun song song-xiao Hui wen-Jun Ye yang Yu yan-Feng li State Key Laboratory of Nonferrous Metals and Processes GRIMAT Engineering Institute Co.Ltd.Beijing 100088China

The microstructure,room temperature and 650℃ tensile properties of an(α+β) titanium alloy were investigated after aging over a temperature range of 600-750℃ following solution *** results exhibit that both aging temperature and aging time influence the precipitation behavior of α_(2) phase,and the size ofα_(2) phase affects the tensile *** growth speed ofα_(2) phase gets quicker with the aging temperature increasing under the same aging *** a given aging temperature,the size of α_(2) phase gets larger when prolonging the aging *** are significant improvements in yield and ultimate tensile strength at room temperature and 650 ℃ after aging at 600℃ for 2 h,but these values decrease with the size of α_(2) phase *** is found that α_(2) phase,less than 7 nm,does not impair the roomtemperature ***,when the size of α_(2) phase grows up from 7 to 15 nm,ductility decreases *** 650 ℃ tensile process,with the particle size increasing from 3 to 15 nm,the interaction between moving dislocations and coherent particles changes from cutting mechanism to bypass mechanism.

关键词： Aging treatment α_(2)phase Tensile properties Interaction mechanism

Metagenomic Analysis of Environmental Samples from Wildlife Rescue Station at Poyang Lake, China

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2023年第7期36卷 595-603页

作者： liU jia li Xi yan song wen Tao ZENG xiao Xu li Hui yanG lei WANG Da yan National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China Nanchang Center for disease prevention and control Nanchang 330038JiangxiChina

Objective To improve the understanding of the virome and bacterial microbiome in the wildlife rescue station of Poyang Lake,*** Ten smear samples were collected in March *** sequencing was performed to delineate bacterial and viral *** analysis was performed using the Kraken2 and Bracken methods.A maximum-likelihood tree was constructed based on the RNA-dependent RNA polymerase(RdRp)region of *** We identified 363 bacterial and 6 viral families.A significant difference in microbial and viral abundance was found between samples S01–S09 and *** S01–S09,members of Flavobacteriia and Gammaproteobacteria were the most prevalent,while in S10,the most prevalent bacteria class was *** S01–S09,members of Myoviridae and Herelleviridae were the most prevalent,while the dominant virus family of S10 was *** full genome of the pigeon mesivirus-like virus(NC-BM-233)was recovered from S10 and contained an open reading frame of 8,124 *** showed the best hit to the pigeon mesivirus 2 polyprotein,with 84.10%amino acid *** analysis showed that RdRp clustered into Megrivirus *** This study provides an initial assessment of the bacteria and viruses in the cage-smeared samples,broadens our knowledge of viral and bacterial diversity,and is a way to discover potential pathogens in wild birds .

关键词： Metagenomics Virome Megrivirus B Picornaviridae Poyang Lake Wildlife Rescue Station Wild Bird

Association of level of leisure-time physical activity with risks of all-cause mortality and cardiovascular disease in an elderly Chinese population: a prospective cohort study

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2020年第10期17卷 628-637页

作者： Hao ZHAO Xue-Ning ZHANG Zhan SHI ling yin wen-li ZHANG Kun HE Xue-Qi HU xiao-yan ZHAO song-He SHI Department of Epidemiology and Biostatistics College of Public HealthZhengzhou UniversityHenanChina Department of Pharmacy Zhengzhou First People’s HospitalZhengzhouHenanChina Department of Neurology Chinese PLA General HospitalBeijingChina

Background Implementing the current guidelines for leisure-time physical activity(LTPA)provides significant health benefits,especially for middle-aged adults,but it is unclear whether LTPA also translates into cardiovascular health benefits among elderly ***,we aimed to assess the association of LTPA with the risks of cardiovascular disease(CVD),including coronary heart disease(CHD)and stroke,and all-cause mortality in an elderly *** In this prospective cohort study,32,942 participants aged 60 years or older who participated in a health check-up programme in China between 2010 and 2018 were *** evaluated the morbidity and mortality risks through the Cox regression model,competing risk model and restricted cubic spline *** During a median of 6.84 years of follow-up,there were 6,857 elderly people with incident CVD;a total of 6,324 deaths occurred due to all causes and 2,060 deaths occurred due to *** with the inactive group,reductions in CVD morbidity and mortality were observed,with hazard ratios(HRs)of 0.89(95%CI:0.83–0.96)and 0.81(95%CI:0.71–0.92)in the insufficiently active group,0.86(95%CI:0.80–0.92)and 0.79(95%CI:0.69–0.90)in the sufficiently active group,and 0.79(95%CI:0.70–0.89)and 0.58(95%CI:0.45–0.76)in the highly active group,respectively;but no significant reductions were observed in the very highly active group,with HRs of 0.87(95%CI:0.71–1.06)and 0.99(95%CI:0.70–1.40),*** with the inactive group,reductions in all-cause mortality were also observed,with a HR of 0.90(95%CI:0.84–0.97)in the insufficiently active group,0.82(95%CI:0.77–0.89)in the sufficiently active group,0.77(95%CI:0.67–0.87)in the highly active group,and 0.80(95%CI:0.64–0.98)in the very highly active group.A restricted cubic spline diagram showed that there was an L-shaped association between LTPA and the risk of all-cause mortality but a U-shaped or reverse J-shaped relationship between LTPA and the risk of CVD morb

关键词： Cardiovascular disease Chronic coronary disease leisure-time physical activity Stroke

Recent Advances in Fibrous Materials for Hydroelectricity Generation

在线全文

学校读者我要写书评

暂无评论

Nano-Micro letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu xiao Feng Xing yang Zheheng song Yuhang song Jingyu Chen yingcun liu Chong Gao Yong Du Zhe Sun Weilin Xu jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

Association of changes in waist circumference with cardiovascular disease and all-cause mortality among the elderly Chinese population: a retrospective cohort study

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2021年第3期18卷 185-195页

作者： Xue-Ning ZHANG Hao ZHAO Zhan SHI ling yin xiao-yan ZHAO Chun-Yu yin Yong-li yanG song-He SHI Department of Epidemiology and Biostatistics College of Public HealthZhengzhou UniversityZhengzhouHenanChina Department of Pharmacy Zhengzhou First People's HospitalZhengzhouHenanChina Department of Neurology Chinese People's Liberation Army General HospitalBeijingChina

BACKGROUND To examine the association of baseline waist circumference(WC)and changes in WC with cardiovascular disease(CVD)and all-cause mortality among elderly *** A total of 30,041 eligible participants were included from a retrospective cohort in *** same questionnaire,anthropometric and laboratory measurements were performed at baseline(2010)and the first follow-up(2013).The percent change in WC between baseline and the first follow-up was calculated to evaluate three years change of *** collected the occurrence of CVD and all-cause death from the first follow-up to December 31,*** cubic splines and Cox proportionalhazards regression models were used to evaluate the relationship between baseline WC/changes in WC and *** The dose-response relationships between baseline WC and CVD mortality were U-or *** low WC group,compared with stable group,the fully adjusted hazard ratio(aHR)for CVD mortality was 1.60(95%CI:1.24−2.06)in WC gain group among *** normal WC group,the CVD mortality risk increased with WC gain(men:aHR=1.86,95%CI:1.36−2.56;women:aHR=1.83,95%CI:1.29−2.58).In moderate-high WC group,the CVD mortality risk increased with WC gain(men:aHR=1.76,95%CI:1.08−2.88;women:aHR=1.46,95%CI:1.04−2.05)and risk decreased with WC loss(men:aHR=0.54,95%CI:0.30−0.98;women:aHR=0.59,95%CI:0.37−0.96).CONCLUSIONS For the elderly population,WC gain may increase CVD mortality risk regardless of baseline WC,whereas WC reduction could decrease the risk only in the moderate-high WC group.

关键词： mortality among elderly