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A Toughness Condition for Fractional(k, m)-deleted Graphs Revisited

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Acta Mathematica Sinica,English Series 2019年第7期35卷 1227-1237页

作者： Wei GAO Juan L.G.GUIRAO yao jun chen Department of Mathematics Nanjing University Nanjing 210093 P. R. China School of Information Science and Technology Yunnan Normal University Kunming 650500 P. R. China Departamento de Matematica Aplicada y Estadistica. Universidad Politecnica de Cartagena Hospital de Marina 30203-Cartagena Region de Murcia Spain

In computer networks, toughness is an important parameter which is used to measure the vulnerability of the network. Zhou et al. obtains a toughness condition for a graph to be fractional(k, m)-deleted and presents an example to show the sharpness of the toughness bound. In this paper, we remark that the previous example does not work and inspired by this fact, we present a new toughness condition for fractional(k, m)-deleted graphs improving the existing one. Finally, we state an open problem.

关键词： Graph fractional factor fractional(k,m)-deleted graph toughness

Sharp Isolated Toughness Bound for Fractional(k,m)-Deleted Graphs

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Acta Mathematicae Applicatae Sinica 2024年

作者： Wei GAO Wei-fan WANG yao-jun chen School of Information Science and Technology Yunnan Normal University Department of Mathematics Zhejiang Normal University Department of Mathematics Nanjing University

Long non-coding RNA SNHG16 promotes human placenta-derived mesenchymal stem cell proliferation capacity through the PI3K/AKT pathway under hypoxia

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World Journal of Stem Cells 2022年第9期14卷 714-728页

作者： Xu-Dong Feng Jia-Hang Zhou jun-yao chen Bing Feng Rui-Tian Hu Jian Wu Qiao-Ling Pan Jin-Feng Yang Jiong Yu Hong-Cui Cao State Key Laboratory for The Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina Department of Chemistry Duke UniversityDurhamNC 27708United States Jinan Microecological Biomedicine Shandong Laboratory Jinan 250117Shandong ProvinceChina Key Laboratory of Diagnosis and Treatment of Aging and Physic-chemical Injury Diseases of Zhejiang Province The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND The effect of hypoxia on mesenchymal stem cells(MSCs)is an emerging topic in MSC *** long non-coding RNAs(lncRNAs)and messenger RNAs(mRNAs)are reported to play a critical role in regulating the biological characteristics of MSCs,their specific expression and co-expression profiles in human placenta-derived MSCs(hP-MSCs)under hypoxia and the underlying mechanisms of lncRNAs in hP-MSC biology are *** To reveal the specific expression profiles of lncRNAs in hP-MSCs under hypoxia and initially explored the possible mechanism of lncRNAs on hP-MSC *** Here,we used a multigas incubator(92.5%N_(2),5%CO_(2),and 2.5%O_(2))to mimic the potential of *** sequencing technology was applied to identify the exact expression profiles of lncRNAs and mRNAs under *** We identified 289 differentially expressed lncRNAs and 240 differentially expressed mRNAs between the hypoxia and normoxia *** them,the lncRNA SNHG16 was upregulated under hypoxia,which was also validated by reverse transcription-polymerase chain ***16 was confirmed to affect hP-MSC proliferation rates using a SNHG16 knockdown ***16 overexpression could significantly enhance the proliferation capacity of hP-MSCs,activate the PI3K/AKT pathway,and upregulate the expression of cell cycle-related *** Our results revealed the specific expression characteristics of lncRNAs and mRNAs in hypoxiacultured hP-MSCs and that lncRNA SNHG16 can promote hP-MSC proliferation through the PI3K/AKT pathway.

关键词： Human placenta-derived mesenchymal stem cell Hypoxia Long non-coding RNAs Proliferation Mesenchymal stem cell

Highly conductive and stable iodine doped argyrodite electrolyte for all-solid-state lithium batteries

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Journal of Energy Chemistry 2025年第1期100卷 50-58页

作者： Gaozhan Liu Jing Zhang Jing Yang Jinghui chen Xingyue Xiao Xiayin yao Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Lithium argyrodites with high ionic conductivity and low cost are considered as one of the most prospective solid electrolytes for all-solid-state lithium ***,the poor chemical stability and compatibility with lithium metal limit their ***,Li5.4PS4.4Cl1.4I0.2solid electrolyte with high ionic conductivity of 11.49 m S cm-1and improved chemical stability is synthesized by iodine *** ultra-thin Li5.4PS4.4Cl1.4I0.2membrane with thickness of 10μm can be obtained by wet coating process,exhibiting a high ionic conductivity of 2.09 mS cm-1and low areal resistance of 1.17Ω***,iodine doping could in-situ form LiI at the lithium/electrolyte interface and improve the critical current density of Li5.4PS4.4Cl1.6from 0.8 to 1.35 mA *** resultant LiCoO2/Li5.4PS4.4Cl1.4I0.2/Li battery shows excellent cycling stability at 1 C,with a reversible specific capacity of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled LiCoO2/Li5.4PS4.4Cl1.4I0.2membrane/Li pouch cell delivers an initial discharge capacity of 110.4 mA h g-1and 80.5% capacity retention after 100 cycles.

关键词： Argyrodite electrolytes Iodine doping Ionic conductivity Stability All-solid-state lithium battery

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

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Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： Zhenyu chen Xue-jun Li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

冲击载荷作用下新型阻尼铝合金的阻尼及力学性能

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航空学报 2007年第3期28卷 735-738页

作者：姚俊臣文丽芳韩寿波马岳韩海军北京航空航天大学材料科学与工程学院北京100083

采用冲击实验装置研究了新型阻尼铝合金材料在冲击载荷作用下的动态力学性能及表征方法。研究结果表明:采用冲击实验的冲击功及能量参数能够科学合理地表征铝合金材料的力学及阻尼性能。新型阻尼铝合金材料的抗冲击载荷能力和阻尼性能... 详细信息

采用冲击实验装置研究了新型阻尼铝合金材料在冲击载荷作用下的动态力学性能及表征方法。研究结果表明:采用冲击实验的冲击功及能量参数能够科学合理地表征铝合金材料的力学及阻尼性能。新型阻尼铝合金材料的抗冲击载荷能力和阻尼性能均高于普通铸造铝合金材料86%及37%左右,且内部组织致密、均匀细小,具有优良的综合性能。

关键词：铝合金力学性能阻尼冲击载荷

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地磁观测数据重构技术研究

地震学报 2016年第6期38卷 878-888页

作者：姚休义滕云田杨冬梅姚远陈俊云南省地震局中国昆明650224 中国地震局地球物理研究所中国北京100081 云南省地震局通海地震台中国云南通海652700 安徽省地震局蒙城地震台中国安徽蒙城233527

基于地磁相对记录数据在1 000km范围内有较高的相关性,本文以缺失数据台站的邻近台站作为参考台站,通过关系拟合及加权对缺失数据进行了重构.数据仿真结果表明:重构数据与原始数据的变化形态极为一致,磁静日平均重构残差仅为0.11nT,磁... 详细信息

基于地磁相对记录数据在1 000km范围内有较高的相关性,本文以缺失数据台站的邻近台站作为参考台站,通过关系拟合及加权对缺失数据进行了重构.数据仿真结果表明:重构数据与原始数据的变化形态极为一致,磁静日平均重构残差仅为0.11nT,磁扰日平均重构残差为0.23nT;重构数据与原始数据的功率谱密度变化特征基本相同,相关性高达1.0.此外,从时域和频域上验证了空间加权法在地磁相对记录数据重构上的有效性,将其应用于实际缺失数据重构中也取得了较好的效果.

关键词：空间相关性缺数重构残差

Dietary Supplement with a Combination of Rhodiola Crenulata and Ginkgo Biloba Enhances the Endurance Performance in Healthy Volunteers

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Chinese Journal of Integrative Medicine 2009年第3期15卷 177-183页

作者：张樟进童瑶邹军陈佩杰虞定海 School of Chinese Medicine the University of Hong Kong College of Exercise and Sports Science Shanghai University of Sport Wushu College Shanghai University of Sport

Objective:To determine whether the ingestion of a herbal supplement called Rhodiola-Gingko Capsule(RGC) would enhance the endurance performance of healthy volunteers and change relevant hormones in a favorable ***:Seventy healthy male volunteers(age ranges from 18 to 22 years old) were randomly assigned to RGC group(35 cases,each capsule containing 270 mg herbal extracts,4 capsules per day) or placebo group(35 cases,equivalent placebo preparation) for 7 weeks using computerproduced digital random...

关键词： herbal supplement endurance maximal oxygen uptake Cortisol testosterone clinical trial

1985～2008年间我国正常男性精液质量变化分析

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中华男科学杂志 2010年第8期16卷 684-688页

作者：黄春妍姚陈均王春江俊康陈刚南通大学公共卫生学院江苏南通226007 苏州军分区第一干休所卫生所江苏苏州215005

目的:研究1985～2008年间国内正常男性精液质量变化趋势。方法:检索历年发表的精子质量方面的文献,系统收集相关资料和数据,利用散点图和直线回归法,分析近24年正常男性精液精子密度、精液量及精子总数的变化。结果:1985～2008年间国内... 详细信息

目的:研究1985～2008年间国内正常男性精液质量变化趋势。方法:检索历年发表的精子质量方面的文献,系统收集相关资料和数据,利用散点图和直线回归法,分析近24年正常男性精液精子密度、精液量及精子总数的变化。结果:1985～2008年间国内正常男性精液质量参数中精液量没有明显变化(P>0.05)。1985～1994年精子密度和精子总数不存在与时间相关的变化(P>0.05),但自1995年后的14年以来,精子密度和精子总数呈现显著下降趋势(P<0.05),精子密度从1995年81.5×106/ml下降到2008年66.7×106/ml,每年降低1.40%;精子总数从1995年257.2×106下降到2008年的185.9×106,每年下降2.15%。结论:1985～1995年间国内正常男性精液质量未见明显变化,而1995～2008年14年间精子密度和精子总数明显降低,很可能与进入重化工时代引起的日益加重的环境污染有关。

关键词：精子密度精液量精子总数精子质量