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STUDY ON THE PERFORMANCE AND MECHANISM OF CEMENT-BASED SELF-LEVEliNG GROUT MATERIAL WITH ULTRA-HIGH EARLY STRENGTH

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STUDY ON THE PERFORMANCE AND MECHANISM OF CEMENT-BASED SELF-...

In vitro corrosion and antibacterial properties of layer-by-layer assembled GS/PSS coating on AZ31 magnesium alloys

第五届水泥与混凝土国际会议

作者： Zhang li-jun, liu Chao, Xie Yu, Wang Zi-mmg, Bai Jie (China Building Materials Academy, Beijing 100024, China)

This paper introduces a new grout material-cement-base ultra-high early strength selfleveling grout material (GRM). It is a harmless and environmental friendly material. No affecting normal applying of construction, It can be used in the engineering required rush repairs and ultra-high early strength concrete. We mainly analyze the performance mechanism during hydrating and hardening stages and application condition of GRM in detail.

关键词： ultra-high early strength self-leveling grout material ettringite rushing repairs

来源： cnki会议评论

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Transactions of Nonferrous Metals Society of China 2015年第12期25卷 4028-4039页

作者：曾荣昌刘丽君骆凯捷沈俐张芬李硕琦邹玉红山东科技大学材料科学与工程学院青岛266590 山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地青岛266590 山东科技大学化学与环境工程学院青岛266590

To enhance the corrosion resistance of magnesium（Mg） alloy and to impart its surface with antibacterial functionality for inhibiting biofilm formation and biocorrosion, Mg（OH）2 films were fabricated on AZ31 magnesium alloy substrates by an in-situ hydrothermal method and well-defined multilayer coatings, consisting of gentamicin sulfate（GS） and poly（sodium 4-styrene sulfonate）（PSS）, were prepared via layer-by-layer（Lb L） assembly. The morphologies, chemical compositions and corrosion resistance of the obtained（PSS/GS）n/Mg sample were investigated using scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, electrochemical methods and immersion tests. Finally, the bactericidal activity of（PSS/GS）n/Mg samples against Staphylococcus aureus was assessed by the zone of inhibition methods and plate-counting method. The so-synthesized composite coating on the Mg alloy substrates exhibits good corrosion resistance and antibacterial performance, which make them attractive as coatings for medical implanted devices.

关键词： magnesium alloy corrosion resistance antibacterial property layer-by-layer assembly

滋阴益气活血解毒组方对MKR转基因2型糖尿病小鼠糖代谢的影响

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湖南中医药大学学报 2007年第2期27卷 20-23页

作者：吴勇军喻嵘胡伟成细华 jun-li liu 湖南中医药大学湖南长沙410007 湖南中医药大学2001级本硕班湖南长沙410007 Fraser Laboratories Department of Medicine McGill University Montreal QC Canada

目的观察滋阴益气活血解毒组方-左归复方干预治疗对骨骼肌胰岛素样生长因子-1及胰岛素双受体功能缺失(MKR)转基因2型糖尿病小鼠的糖代谢的影响。方法由美国国立卫生研究院(NIH)授权使用引进的MKR鼠,经自然交配后繁殖的子代作为研究对象... 详细信息

目的观察滋阴益气活血解毒组方-左归复方干预治疗对骨骼肌胰岛素样生长因子-1及胰岛素双受体功能缺失(MKR)转基因2型糖尿病小鼠的糖代谢的影响。方法由美国国立卫生研究院(NIH)授权使用引进的MKR鼠,经自然交配后繁殖的子代作为研究对象。MKR小鼠经繁殖鉴定后,以左归复方给药30d进行干预治疗。结果MKR鼠所有子代鼠均会出现长度为330bp的DNA片断,表明该MKR鼠后代能稳定遗传。新生MKR鼠自出生3周开始,即出现显著的血糖增高,5周以后血糖则较稳定地维持在高水平。与对照组小鼠同期的血糖比较,差异具有非常显著性意义(P<0.01)。而左归复方给药30d进行干预治疗后,其高剂量具有显著的改善MKR鼠糖耐量异常和降低空腹血糖的作用(P<0.05,P<0.01)。结论我们成功地引进了MKR模型,MKR鼠是目前一种非常良好的2型糖尿病的动物模型。以滋阴益气活血解毒立法化裁组方的左归复方具有显著的改善MKR鼠糖耐量异常和降低空腹血糖的作用。

关键词： 2型糖尿病小鼠转基因技术胰岛素样生长因子-1受体胰岛素受体滋阴益气活血解毒熟地

Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： junjie li Wenbo Yu Zhenyu Sun Weichen Zheng liangwei Zhang Yanling Xue Wenning liu Shoumei Xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment

PI3K/AKT signaling and neuroprotection in ischemic stroke:molecular mechanisms and therapeutic perspectives

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Neural Regeneration Research 2025年第10期20卷 2758-2775页

作者： Tianlong liu Xiaolin li Xiaowei Zhou Wei Chen Aidong Wen Minna liu Yi Ding Department of Pharmacy Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina Department of Pharmacy The 940 Hospital of Joint Logistics Support Forces of Chinese PLALanzhouGansu ProvinceChina Department of Pharmacy The 944 Hospital of Joint Logistics Support Forces of Chinese PLAJiuquanGansu ProvinceChina Department of Nephrology The 940 Hospital of Joint Logistics Support Forces of Chinese PLALanzhouGansu ProvinceChina

It has been reported that the PI3K/AKT signaling pathway plays a key role in the pathogenesis of ischemic *** a result,the development of drugs targeting the PI3K/AKT signaling pathway has attracted increasing attention from *** article reviews the pathological mechanisms and advancements in research related to the signaling pathways in ischemic stroke,with a focus on the PI3K/AKT signaling *** key findings include the following:(1)The complex pathological mechanisms of ischemic stroke can be categorized into five major types:excitatory amino acid toxicity,Ca^(2+)overload,inflammatory response,oxidative stress,and apoptosis.(2)The PI3K/AKT-mediated signaling pathway is closely associated with the occurrence and progression of ischemic stroke,which primarily involves the NF-κB,NRF2,BCL-2,mTOR,and endothelial NOS signaling pathways.(3)Natural products,including flavonoids,quinones,alkaloids,phenylpropanoids,phenols,terpenoids,and iridoids,show great potential as candidate substances for the development of innovative anti-stroke medications.(4)Recently,novel therapeutic techniques,such as electroacupuncture and mesenchymal stem cell therapy,have demonstrated the potential to improve stroke outcomes by activating the PI3K/AKT signaling pathway,providing new possibilities for the treatment and rehabilitation of patients with ischemic *** investigations should focus on the direct regulatory mechanisms of drugs targeting the PI3K/AKT signaling pathway and their clinical translation to develop innovative treatment strategies for ischemic stroke.

关键词： apoptosis autophagy inflammation ischemic stroke neuroprotection oxidative stress pathogenesis phosphatidylinositol 3-kinase protein kinase B therapeutics

应用于二类水体大气校正的短波红外推扫成像系统设计

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红外技术 2016年第9期38卷 721-727页

作者：李建伟危峻李雪刘宝丽冯鑫上海技术物理研究所上海200083

为了对近海浑浊的二类水体水色遥感进行大气校正,采用国产800×2短波红外In Ga As探测器、窄带滤光片和透射式像方远心光学系统研制了1.232-1.252μm和1.630-1.654μm双波段短波红外推扫成像系统。该成像系统具备在轨注入工作参数的能力... 详细信息

为了对近海浑浊的二类水体水色遥感进行大气校正,采用国产800×2短波红外In Ga As探测器、窄带滤光片和透射式像方远心光学系统研制了1.232-1.252μm和1.630-1.654μm双波段短波红外推扫成像系统。该成像系统具备在轨注入工作参数的能力,可灵活调节成像工作模式。经测试,双波段线阵短波红外成像系统的MTF、信噪比以及光谱响应均达到较高性能,有望提供一种有效的二类水体大气校正手段。

关键词： 800×2元线列 In Ga As 短波红外二类水体大气校正

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斜带髭鲷和紫红笛鲷早期发育阶段的行为选择

水生态学杂志 2017年第1期38卷 86-93页

作者：区又君李加儿柳琪周慧农业部南海渔业资源开发利用重点实验室中国水产科学研究院南海水产研究所广州510300 上海海洋大学水产与生命学院上海201306

采用实验生态学方法研究斜带髭鲷(Hapaologenys nitens)和紫红笛鲷(Lutianus argentimaculatus)幼鱼早期发育阶段的行为选择,旨在从行为学角度为优化种苗生产管理提供科学依据。结果显示,斜带髭鲷回避红色底质,对黑色底质的选择则是随... 详细信息

采用实验生态学方法研究斜带髭鲷(Hapaologenys nitens)和紫红笛鲷(Lutianus argentimaculatus)幼鱼早期发育阶段的行为选择,旨在从行为学角度为优化种苗生产管理提供科学依据。结果显示,斜带髭鲷回避红色底质,对黑色底质的选择则是随着生长而逐渐增加,1 cm体长组的隐匿习性最强,为50.67%;2 cm和3 cm组的隐匿率分别为40.67%和35.33%;4 cm组仅25.00%。1 cm组的顶流率为3.35%,4 cm达71.65%。1 cm和2 cm组在1 760~2 210 lx照度下的分布率分别为41.67%和35.00%,在39~59 lx为8.33%和16.67%,4 cm组在38~53 lx的分布率达41.67%,在2 780~2 980 lx仅为8.33%。体长1 cm的紫红笛鲷喜栖息于白色底质,约占总群体的61.00%,随着生长,对黑色底质的喜好明显增强;4 cm组对白色底质无选择,而对黑色底质的选择达到63.67%。1 cm组的隐匿百分率为55.67%,4 cm组仅为25.00%。在流速1 cm/s的情况下,趋流率比较低,为50.00%左右,1 cm组在流速3 cm/s时的趋流率最高,达到98.67%;1 cm组的顶流率为96.65%,3 cm和4 cm组的顶流率仅为6.65%和3.35%。研究表明,斜带髭鲷和紫红笛鲷行为特征随着个体的发育而变化。

关键词：斜带髭鲷紫红笛鲷早期发育行为选择

Optimization Strategies of Na_(3)V_(2)(PO_(4))_(3) Cathode Materials for Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 204-251页

作者： Jiawen Hu Xinwei li Qianqian liang li Xu Changsheng Ding Yu liu Yanfeng Gao School of Materials Science and Engineering Shanghai UniversityShanghai 200444People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China

Na_(3)V_(2)(PO_(4))_(3)(NVP)has garnered great attentions as a prospective cathode material for sodium-ion batteries(SIBs)by virtue of its decent theoretical capacity,superior ion conductivity and high structural ***,the inherently poor electronic conductivity and sluggish sodium-ion diffusion kinetics of NVP material give rise to inferior rate performance and unsatisfactory energy density,which strictly confine its further application in ***,it is of significance to boost the sodium storage performance of NVP cathode *** to now,many methods have been developed to optimize the electrochemical performance of NVP cathode *** this review,the latest advances in optimization strategies for improving the electrochemical performance of NVP cathode material are well summarized and discussed,including carbon coating or modification,foreign-ion doping or substitution and nanostructure and morphology *** foreign-ion doping or substitution is highlighted,involving Na,V,and PO_(4)^(3−)sites,which include single-site doping,multiple-site doping,single-ion doping,multiple-ion doping and so ***,the challenges and prospects of high-performance NVP cathode material are also put *** is believed that this review can provide a useful reference for designing and developing high-performance NVP cathode material toward the large-scale application in SIBs.

关键词： Sodium-ion batteries Na_(3)V_(2)(PO_(4))_(3) Cathode materials Electrochemical performance Optimization strategies

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基于供给侧改革提升学历教育教学质量

大连教育学院学报 2017年第3期33卷 4-6页

作者：张俊刘丽大连教育学院学历教育中心辽宁大连116021

成人高等学历教育的教学质量越来越成为困扰其进一步发展的瓶颈,成为研究的热点和难点问题。依据影响成人高等学历教育教学质量的因素,结合多年的教学实践经验和学生实际,从供给侧改革视角,提出提高成人高等学历教育教学质量的策略。

关键词：供给侧改革成人高等学历教育教学质量策略