Results 31 to 40 of about 11,519 (169)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Additively manufactured AlCoFeNi series eutectic high‐entropy alloys (EHEAs) exhibit nonequilibrium dual‐phase microstructure in the as‐printed state, allowing them to be easily tailored through annealing to explore their strength–toughness potential.
Huidong Wu +13 more
wiley +1 more source
Dianci bileiqi, 2013 对聚氨酯复合材料横担进行了受力分析,指出需要重点关注的受力关键部位,然后分析了在应力应变条件下光纤光栅的光谱特征变化,指出了利用光纤光栅来监测复合材料横担应力变化的可行性,试验研究了植入复合材料横担前不同中心波长的光纤光栅应变传感特性,最后初步设计了基于光纤光栅复合材料横担应力监测系统。
邓鹤鸣 +5 more
doaj
Studies on the mechanisms of mangrove seedlings in response to duration of tidal immersion [PDF]
, 2005 本研究旨在探讨中国5种主要红树植物的幼苗对潮汐淹水时间的胁迫响应机制。应用人工潮汐装置，在温室条件下模拟正规半日潮的潮汐特征，对秋茄(Kandeliacandel)、木榄(Bruguieragymnorrhiza)、红海榄(Rhizophorastylosa)、白骨壤(Avicenniamarina)和桐花树(Aegicerascorniculatum)等5种红树植物幼苗进行潮汐淹水模拟实验。根据福建沿海红树林分布的潮位特征和潮间带各点的淹水时间，将规则半日潮条件下的潮间带平均分成7个等级 ...
陈鹭真
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Effects of rain-shelter cultivation on leaf photosynthetic characteristics and fruit quality in pear [PDF]
[Objective] Rain-shelter cultivation has been widely implemented in fruit production to cope with adverse environmental stresses and enhance the fruit quality.
HUANG Xinzhong +4 more
core +1 more source
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
Guangtongxin yanjiu, 2021 针对纤芯包层复合结构光纤布拉格光栅（FBG）制备难度较大的问题，文章首先分析了复合结构FBG的结构特征，然后从光纤耦合模理论出发，利用Rsoft结合Matlab软件分别模拟了单独存在的纤芯、包层光栅以及复合结构光栅的反射光谱，并且通过改变光栅周期、栅区长度以及调制深度，对复合结构FBG的反射光谱特性进行了仿真分析。仿真结果表明，光栅周期为541 nm并固定其他参数时，单独的纤芯与包层光栅中心反射波长分别为1 563.4和1 558.0 nm，复合结构光栅获得了具有相同中心波长的双峰反射光谱 ...
董云辉, 何巍, 宋言明, 孟凡勇
doaj
Response of Photosynthetic Apparatus to Different Irradiance in Flag Leaves of High-Yielding Winter Wheat PH01-35 Grown under Low Light Conditions [PDF]
, 2009 为了解弱光下生长的小麦叶片在不同光强下PS II和光合电子传递链的工作状态,解释其突然转入强光下时发生光抑制和光破坏的原因,以PH01-35为材料,采用大田人工遮光的方法,测定了小麦旗叶叶绿素含量、光合特性参数及快速光曲线。弱光处理15 d后,旗叶叶绿素含量明显上升,净光合速率、光补偿点、光饱和点、表观量子效率、羧化效率均出现不同程度的下降。与250μMOl M-2 S-1的弱光适应3 H相比,1 200μMOl M-2 S-1的强光适应3 H后,弱光下生长叶片的快速光曲线初始斜率下降幅度较大 ...
信长朋 +7 more
core +1 more source
Peptide‐Coupled Gold Nanoclusters: Syntheses, Properties, and Bioapplications
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Gold nanoclusters (AuNCs) have garnered significant attention in biomedicine. Particularly, peptide‐coupled AuNCs (Pep‐AuNCs) are emerging as a fascinating class of cluster probes that enable highly tailorable design in their optical, catalytic, targeting, and therapeutic capabilities via peptide engineering.
Jie Liu +5 more
wiley +1 more source
Guangtongxin yanjiu, 2016 对提高基于聚合物材料的WBG（波导布拉格光栅）的热光调制效率的方法进行了研究。根据聚合物材料的光学特性设计了三阶的WBG,仿真分析了WBG结构参数对光栅传输特性的影响;为提高热光调制效率,采用了内嵌式电极结构与在WBG两侧构建AT（空气沟槽）相结合的方案。模拟结果表明,与一般热光型调制结构相比,该方案的波长调谐灵敏度提升了1.87倍,实现了大范围的波长可调。所设计的热光可调WBG具有受热性强、热均匀性高及热串扰低等优点。
翟羽萌 +4 more
doaj
Water Use Patterns of Coastal Wetland Plants in the Mangrove Wetlands of Zhangjiang Estuary and Their Ecological Significance [PDF]
, 2012 滨海湿地生态系统位于陆地与海洋交汇处，受海水周期潮汐的影响，其水文特征具有明显的空间异质性和时间变异性。虽然滨海植物生长在一个长期水淹环境中，水分对它们的生长却是一个限制因子，这是因为滨海植物除了受到氧气供给的限制和高盐分以外，还受到了因高盐分而造成的水分胁迫，具有典型生理干旱的特点。因此，水分来源及其有效性是影响滨海植物分布和生长的一个重要因素。 滨海植物由于受到潮汐水淹及盐度等环境因素的梯度影响，常呈现由海向陆的带状分布特征，以及沿河分布的特点。目前滨海湿地生态系统受到互花米草 ...
黄敏参
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