Results 61 to 70 of about 138,305 (254)

Designing High‐Strength and High‐Ductility Cast Mg–Zn–Al–Mn–Sn Alloys via τ‐Mg32(Al,Zn)49 Phase Tuning and Twin Boundary Toughening Optimisation

open access: yesRare Metals, EarlyView.
ABSTRACT Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large‐scale and cost‐effective engineering application of magnesium alloys. In this work, guided by first‐principles calculations, we tailored the τ‐Mg32(Al,Zn)49 phase and optimised twin boundary, thereby designing and successfully ...
Yun‐Xuan Zhou   +8 more
wiley   +1 more source

Comparison of the situ catalytic conversion of biomass fast pyrolysis vapors using different zeolite(不同分子筛催化剂对生物质快速热裂解气的原位催化转化的比较)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2016
用HZSM-5,USY-1,H-beta 3种不同类型的分子筛对木屑的快速热裂解气进行原位催化转化.研究了不同分子筛对积碳量、生物油产率、生物油组分分布的影响.实验结果表明,分子筛积碳量排序为:USY-1>H-beta> HZSM-5.生物油产率在使用催化剂后有所降低,并且HZSM-5产生的生物油产率最高.使用催化剂后生物油组分种类和含量都有明显的变化.3种分子筛中,HZSM-5催化产生的烃类含量大大增加,轻质苯酚含量也明显增加,重质苯酚和糖类含量明显降低,催化效果显著 ...
ZHANGYindi(张引弟)   +2 more
doaj   +1 more source

Bidentate Coordination by Graphene Oxide‐Enhanced γ‐Cyclodextrin for Synergistic Solvation and Stabilization of the Zn Anode

open access: yesRare Metals, EarlyView.
ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu   +8 more
wiley   +1 more source

基于EMI的小泊湖退化湿地土壤盐分的空间分布

open access: yesShuitu Baochi Xuebao, 2016
采用电磁感应(EMI)、地统计学半变异函数和Kriging空间插值方法研究小泊湖退化湿地土壤盐分的空间分布。结果表明:土壤表观电导率(ECa)和0—40 cm土壤盐分呈线性显著正相关,说明在小泊湖湿地土壤表观电导率的变化可以用以反映土壤盐分含量的变化;半变异函数分析表明,土壤盐分具有强空间相关性[C/(C0+C)>0.5],其空间分布主要是由结构性因素引起的;高斯模型(R2=0.98)插值土壤盐分表明,土壤盐分空间分布与退化湿地的空间分布表现出明显的一致性,放牧活动强烈的退化区域土壤盐分相对较高 ...
魏俊奇, 蒋志云
doaj  

Synthesis and characterization of an acrylonitrile-based copolymer containing carbohydrate Moieties(一种含糖丙烯腈共聚物的合成与表征)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2009
以五乙酰基葡萄糖和甲基丙烯酸-2-羟基乙酯(HEMA)为原料,以路易斯酸—三氟化硼乙醚络合物(BF3 •Et2O)为催化剂,方便地合成了一种含糖单体—甲基丙烯酸-2-(2',3',4' ,6'-四-O乙酰基-β-D-吡喃葡萄糖氧)乙酯(AcGEMA).该单体与丙烯腈(AN)经自由基溶液聚合的方法进行了共聚.单体和共聚物结构分别经红外、核磁证实.以水接触角测定脱乙酰保护后的含糖共聚物膜表面,结果表明脱乙酰化可显著提高膜表面亲水性.因此,用共聚法对聚丙烯腈膜改性,使其表面引入糖基,可以改善聚合物膜的亲水性 ...
WULi-li(吴莉莉)   +2 more
doaj   +1 more source

皮膚および毛髪上皮組織の分化制御におけるリゾリン脂質の役割と香粧品への応用 [PDF]

open access: yes, 2011
筑波大学University of Tsukuba博士(生物工学)Doctor of Philosophy in Biotechnology2010【要旨 ...
89183, 矢作, 彰一
core   +1 more source

Lipid Nanoparticles Delivering ClpP‐mRNA Suppress Pyroptosis and Senescence in Intervertebral Disc Degeneration via mTOR/BNIP3‐Activated Mitophagy

open access: yesRare Metals, EarlyView.
ABSTRACT Intervertebral disc degeneration (IDD) is a predominant cause of low back pain, significantly impacting quality of life. Mitochondrial fitness is essential in the progression of IDD, as it regulates cellular senescence and pyroptosis. This study investigates the role of mitochondrial caseinolytic protease P (ClpP) in alleviating senescence and
Kun Wang   +7 more
wiley   +1 more source

AQP1在不同分化程度胃腺癌组织中的表达

open access: yesZhongguo shiyan zhenduanxue, 2008
目的为了研究AQP1在胃腺癌分化中的表达和作用。方法采用HE法和SP免疫组织化学法研究不同分化程度的人胃腺癌的AQP1的表达。结果高、中分化的胃腺癌细胞形成腺泡,并且AQP1表达于其细胞质和细胞膜,在它们的细胞质中可见阳性反应的泡状结构;无腺泡形成的低分化的腺癌细胞不表达AQP1,有腺泡形成的低分化腺癌细胞具有弱阳性AQP1。结论AQP1参与胃腺癌细胞的分化和外分泌功能。
陈爱军   +4 more
doaj  

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