Results 21 to 30 of about 676,348 (166)
Bioinspired 3D‐Printed NiTi Metamaterials With Bivalve‐Like Crossed‐Lamellar Structures
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Metamaterials demonstrate unique mechanical properties and functional performance owing to their distinctive topological spatial structures. In this study, by mimicking the natural Saxidomus purpuratus shell, bioinspired crossed‐lamellar architectures with interlamellar apex angles ranging from 60° to 150° were designed and fabricated in NiTi ...
Yu Chen +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 选择科尔沁沙地典型流动沙丘作为研究对象,分析了流动沙丘土壤水分的时空变化以及土壤水分特征常数的空间变化规律。结果表明,流动沙丘土壤水分受降雨的响应呈现出明显的时空变化特征;土壤容重、凋萎湿度和机械组成的空间变化,由于流动沙丘风蚀运动的复杂化而表现为无规律性;各部位土壤田间持水量和容重随深度具有显著的负相关关系。同时土壤水分特征常数的量化,可以为流动沙丘的综合整治、恢复和开发利用提供一定的理论支持。
刘新平 张铜会 赵哈林 赵学勇 移小勇
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Zhejiang Daxue xuebao. Lixue ban, 2011 实时、准确地掌握区域水土流失时空变异规律是制定有效水土保持措施的关键.但目前水土流失时空规律分析鲜有兼顾定量数值特征与空间可视化特征.本研究利用探索性空间分析方法和遥感信息，在景观尺度上，对1994~2003年间浙江安吉县水土流失的时空动态格局进行分析.结果表明，10年间安吉县水土流失强度增加、影响范围扩大、水土流失高风险区面积增加.在500 m×500 m和1 000 m×1 000 m 2种格网尺度上，水土流失空间格局均表现出明显的空间集聚性，但以500 m×500 m尺度上的表现更为显著 ...
JIANGZhen-lan(江振蓝) +4 more
doaj +1 more source
International Social Security Review, Volume 79, Issue 2, Page 99-121, April/June 2026.Gender responsiveness has emerged as a prominent concept in social protection policy, increasingly shaping donor agendas and national strategies. Yet despite widespread usage, we lack well‐defined analytical frameworks that allow for gender‐responsiveness assessments of entire national social protection systems.
Talea Grootenhuis
wiley +1 more source
Integrative Conservation, Volume 5, Issue 1, Page 16-32, March 2026.A review of 192 articles published between 1985 and 2023 revealed that human–jaguar conflict literature has focused on the human dimensions of conflict, jaguar killings, attacks on domestic animals and humans, and management. Several research gaps remain including: policy enforcement, interdisciplinary research, relevant geographic locations and ...
Angelica Solano +2 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 3, Page 636-654, March 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT CoP has become a research hotspot for supercapacitor electrode materials because of its considerable theoretical capacitance and metalloid nature, but its commercial application remains hampered by structural instability and sluggish ion kinetics.
Gaoliang Wang +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 采用地统计学的方法，研究了科尔沁沙地沙质草场土壤含水量对干旱和降雨响应的空间变异规律。结果表明，干旱时沙质草场表层(0～20cm)、亚表层(20～40cm)土壤含水量可很好地拟合成球状模型和指数模型，在1～2．26m，1～6．63m的中等尺度范围内表现出很高的空间自相关性，空间自相关度分别为0．92，0．87．分维数均表现出较弱的空间依赖性．分别为1．99，1．94，两层土壤含水量变异特征差异小，土壤水分的空间变异性强，破碎化程度高。降雨后沙质草场土壤表层 ...
左小安 赵学勇 赵哈林 李玉霖 移小勇 黄刚
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四川大学学报. 自然科学版, 2002 讨论了多项式环及其商环表示的线性空间的一个对偶空间 在将非线性代数方程组的求解转化为线性代数中矩阵的特征值与特征向量的计算时 ,该对偶空间中的线性变换矩阵的特性起着关键性的作用 作者对其特性进行了较深入的研究 ...
向晓林
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