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广东培正学院学报 2010年第3期10卷 68-70,79页

作者：胡闹广东培正学院外语系

学校教育在促进人的社会化过程中起着最基础、最关键的作用,是其他社会化主体不能替代的。而体育既是教育的手段,又是教育的重要组成部分,对青少年生活技能的培养、角色的扮演、社会规范的遵守、竞争意识的培养、文化的传递、个性的发... 详细信息

学校教育在促进人的社会化过程中起着最基础、最关键的作用,是其他社会化主体不能替代的。而体育既是教育的手段,又是教育的重要组成部分,对青少年生活技能的培养、角色的扮演、社会规范的遵守、竞争意识的培养、文化的传递、个性的发展等起着独特作用。

关键词：学校体育青少年社会化

Expression of Basic Fibroblast Growth Factor Results in the Decrease of Myostatin mRNA in Murine C2C12 Myoblasts

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Acta Biochimica et Biophysica Sinica 2006年第10期38卷 697-703页

作者： Hua-Zhong LIU~(1,2) Qing LI~1 Xing-Yuan YANG~1 Lin LIU~1 Lei LIU~1 Xiao-Rong AN~1* Yong-Fu CHEN~1 1 State Key Laboratory for Agrobiotechnology,College of Biological Science,China Agricultural University,Beijing 100094,China 2 Modern Biochemistry Center,guangdong Ocean University,Zhanjiang 524088,China StateKeyLaboratoryforAgrobiotechnology CollegeofBiologicalScienceChinaAgriculturalUniversityBeijing100094China ModernBiochemistryCenter GuangdongOceanUniversityZhanjiang524088China

During the development and regeneration of skeletal muscle,many growth factors,such asbasic fibroblast growth factor (bFGF,FGF-2) and myostatin,have been shown to play regulating *** contributes to promote proliferation and to inhibit differentiation of skeletal muscle,whereas myostatinplays a series of contrasting *** order to elucidate whether the expression of bFGF has any relationshipwith the expression of myostatin in skeletal muscle cells,we constructed a eukaryotic expression vector forthe expression of exogenous bFGF in murine C2C12 *** RT-PCR assays indicated thatwith the increase of the expression of exogenous bFGF gene,the expression of endogenous myostatin genewas suppressed at mRNA level and protein level.

关键词： basic fibroblast growth factor myostatin murine C2C12 myoblast real time RT-PCR

贺兰山不同坡向和海拔梯度土壤团聚体组成和稳定性变化特征及其影响因素

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生态学报 2024年第17期44卷 7770-7785页

作者：秦崧悦吴新亮褚保森张智勇郑成浩刘峰张帅发周金星北京林业大学水土保持学院水土保持国家林业和草原局重点实验室北京100083 北京林业大学云南建水荒漠生态系统国家定位观测研究站北京100083 广东省科学院生态环境与土壤研究所广州510650

认识山地土壤团聚体稳定性的空间分异规律,对山地生态系统功能评估与土壤侵蚀防治具有重要意义。为探究干旱区山地土壤团聚体稳定性空间变化特征及其影响因素,选取贺兰山不同坡向(西北、东南、东北和西南)和海拔梯度(1300—2800 m)的表... 详细信息

认识山地土壤团聚体稳定性的空间分异规律,对山地生态系统功能评估与土壤侵蚀防治具有重要意义。为探究干旱区山地土壤团聚体稳定性空间变化特征及其影响因素,选取贺兰山不同坡向(西北、东南、东北和西南)和海拔梯度(1300—2800 m)的表层(0—10 cm)和表下层(10—20 cm)土壤为研究对象,测定了土壤水稳性大团聚体和微团聚体组成,分析了土壤团聚体稳定性的空间分异特征,揭示了土壤团聚体稳定性与地形,植被和土壤性质之间的关系。结果表明:研究区土壤以>2 mm和0.25—0.05 mm粒级团聚体为主。综合土壤粘粒分散系数(CDC)和粘粒分散率(CDR)分析,东北坡和西南坡土壤微团聚体稳定性较优于西北坡和东南坡。对于土壤水稳性大团聚体稳定性指数,东北坡团聚体平均质量直径(MWD)和几何平均直径(GMD)最低,分别为1.56 mm和0.44mm,土壤水稳性团聚体稳定性最差。随海拔升高,土壤CDC和CDR减小,团聚度(DOA)增大,表层土壤GMD呈上升的趋势,而表下层土壤MWD和GMD值减小。冗余分析表明土壤理化性质是影响不同海拔和坡向下土壤团聚体稳定性的主要因素,其中土壤容重、毛管孔隙度、粘粒含量和交换性Mg2+是主要影响因子。

关键词：坡向海拔土壤团聚体团聚体稳定性山地生态系统

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网络信息的分类及对策

图书馆论坛 2001年第2期21卷 74-76页

作者：邱燕燕广东工业大学图书馆广州510643

从网络信息的特点及搜索引擎对网络信息的分类和传统文献分类法在网络信息分类中的应用等方面。

关键词：网络信息分类自动分类搜索引擎传统分类法中文网络信息分类法

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农民负担与财政体制创新

税务与经济 2004年第4期 40-42页

作者：董再平广东经济管理学院财金系广东广州510400

农民负担问题表面上是一个税费负担问题,而其背后却是机构的膨胀和冗员的激增,以及财政体制落后的问题。因此,进行农村税费改革,必须把精简机构、转变政府职能与深化分税制财政体制改革结合起来。

关键词：农民负担财政体制农村税费改革政府职能分税制

OSCILLATION CRITERIA FOR CERTAIN EVEN ORDER NEUTRAL DIFFERENTIAL EQUATIONS

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Annals of Differential Equations 2010年第3期26卷 259-266页

作者： Xianyong Huang (Dept. of Math., guangdong Institute of Education, Guangzhou 510303)Zhiting Xu (School of Mathematical Sciences, South China Normal University, Guangzhou 510631)

Using the generalized Riccati technique and the averaging technique, we establish several oscillation criteria for certain even order neutral differential equation. The results obtained in this paper extend and improv... 详细信息

关键词： even order neutral differential equation oscillation generalized partial Riccati transformation integral averaging technique

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试论现代诉讼程序的价值

武汉大学学报（人文科学版） 2005年第1期58卷 43-47页

作者：邓剑光汕头大学法学院广东汕头515063

现代诉讼程序有多方面的价值追求,而价值追求是通过一系列理性设计的功能机制来实现的。这些功能机制主要有:诉讼独立、诉讼中立、诉讼公开、诉讼仪式、尊重与直接话语交涉。由于上述诉讼机制的存在,现代诉讼程序的功能越来越强大,也越... 详细信息

现代诉讼程序有多方面的价值追求,而价值追求是通过一系列理性设计的功能机制来实现的。这些功能机制主要有:诉讼独立、诉讼中立、诉讼公开、诉讼仪式、尊重与直接话语交涉。由于上述诉讼机制的存在,现代诉讼程序的功能越来越强大,也越来越能够满足人们多方面的需要,因此其价值也体现为多个方面,主要包括对实体法的效用价值、息纷止争价值、法治价值、独立价值。这些价值在现代社会稳定社会秩序、实现法治文明、追求社会全面进步中具有不可缺少的积极意义。

关键词：诉讼程序诉讼机制实体法法治文明法治价值独立价值求是功能机制效用价值公开

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中小型图书馆文献分类质量控制分析探讨

图书馆论坛 2005年第1期25卷 112-115页

作者：杨兴菊广东医学院图书馆湛江524023

揭示中小型馆文献分类质量问题类型, 分析失控原因, 探讨分类质量控制的必要性及分类质量控制具体措施。

关键词：文献分类中小型图书馆分类质量必要性类型具体措施质量问题分析原因质量控制

Ruthenium nanoclusters anchored on cobalt phosphide hollow microspheres by green phosphating process for full water splitting in acidic electrolyte

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Chinese Chemical Letters 2021年第1期32卷 511-515页

作者： Yunqie Deng Linjing Yang Yakun Wang Lili Zeng Jiayuan Yu Bo Chen Xiaoli Zhang Weijia zhou Guangzhou Key Laboratory for Surface Chemistry of Energy Materials New Energy Research InstituteSchool of Environment and EnergySouth China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China Shandong Collaborative Innovation Center of Technology and Equipements for Biological Diagnosis and Therapy Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJi’nan 250022China Center for Programmable Materials School of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798Singapore School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Transition metal phosphide(TMP) based electrocatalysts possessing special crystal and electronic structures attract broad attention in the field of *** effort is made to optimize TMP catalysts aiming to satisfy the electrochemical catalysis *** this work,an environmentally friendly in situ green phosphating strategy and spatial limiting effect of the RuCo precursor is employed to fabricate the ruthenium nanoclusters anchored on cobalt phosphide hollow microspheres(Ru NCs/Co_(2)P HMs).The obtained Ru NCs/Co_(2)P HMs electrocatalysts exhibit high hydrogen evolution reaction(HER) activity at wide pH ranges,which require an overpotential of 77 mV to achieve the current density of 10 mA/cm^(2) in 0.5 mol/L H_(2)SO_(4) and 118 mV in 1.0 mol/L ***,the multifunctional Ru NCs/Co_(2)P HMs exhibit good oxygen evolution reaction(OER) activity with an overpotential of 197 mV to reach the current density of 10 mA/cm^(2) in 0.5 mol/L H_(2)SO_(4),which is below that of the commercial RuO_(2) electrocatalyst(248 mV).A two-electrode electrolyzer is assembled as well,in acid electrolyte,it achieves a current density of 10 mA/cm^(2) at a voltage of 1.53 V,which is superior to that of the benchmark of precious metal-based electrolyzer(1.58 V).

关键词： Green phosphating Cobalt phosphide Ruthenium nanocluster Hydrogen evolution reaction Water splitting

A thermostability perspective on enhancing physicochemical and cytological characteristics of octacalcium phosphate by doping iron and strontium

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Bioactive Materials 2021年第5期6卷 1267-1282页

作者： Haishan Shi Xiaoling Ye Jing Zhang Tingting Wu Tao Yu Changren zhou Jiandong Ye School of Stomatology Jinan UniversityGuangzhou510632China National Engineering Research Center for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou510006China School of Materials Science and Engineering South China University of TechnologyGuangzhou510640China College of Chemistry and Materials Science Jinan UniversityGuangzhou510632China National Engineering Research Center for Healthcare Devices Guangdong Institute of Medical InstrumentsGuangdong Academy of SciencesGuangzhou510500China

Investigation of thermostability will lead the groundbreaking of unraveling the mechanism of influence of ion-doping on the properties of calcium *** this work,octacalcium phosphate(OCP),a metastable precursor of biological apatite,was used as a stability model for doping ions(Fe^(3+)and Sr^(2+))with different ionic charges and *** treated under hot air at different temperatures(110-200◦C),the phase,morphology,structure,physicochemical properties,protein affinity,ions release,and cytological responses of the ion-doped OCPs were investigated *** results showed that the collapse of OCP crystals gradually occurred,accompanying with the dehydration of hydrated layers and the disintegration of plate-like crystals as the temperature *** collapsed crystals still retained the typical properties of OCP and the potential of conversion into *** to the undoped OCP,Fe-OCP,and Sr-OCP had lower and higher thermostability respectively,leading to different material surface properties and ions *** adjusted thermostability of Fe-OCP and Sr-OCP significantly enhanced the adsorption of proteins(BSA and LSZ)and the cytological behavior(adhesion,spreading,proliferation,and osteogenic differentiation)of bone marrow mesenchymal stem cells to a varying extent under the synergistic effects of corresponding surface characteristics and early active ions *** work paves the way for understanding the modification mechanism of calcium phosphates utilizing ion doping strategy and developing bioactive OCP-based materials for tissue repair.

关键词： Octacalcium phosphate Thermostability Iron Strontium Osteogenesis