Results 31 to 40 of about 12,397 (195)
Guangtongxin yanjiu, 2011 采用数值模拟的方法研究了光纤布拉格光栅（FBG）的非线性双稳开关特性。从耦合模理论出发,利用Jacobi椭圆函数法得到了3种不同的解,首先对3种解下的非线性双稳开关特性分别进行比较,然后针对各个解下的影响开关特性的失谐量、耦合系数和光栅长度等参数进行分析,研究结果对于分析和构建非线性双稳FBG光开关具有一定的意义。
李丽君, 曹莹, 周秀丽, 于国亮
doaj
Effects of mixed-culture densities of Spartina alterniflora on eco-physiological characteristics of Kandelia candel seedling [PDF]
, 2007 按照不同密度将互花米草与秋茄进行混种,对比研究胁迫条件下秋茄幼苗生长、光合特性及其渗透调节物质变化规律。结果表明,低密度互花米草促进秋茄的茎长以及各部分生物量,高密度则起抑制作用。随着互花米草密度的增大,秋茄幼苗叶片光合速率、气孔导度、蒸腾速率、水分利用率和蛋白含量均下降;相反,胞间CO2浓度、可溶性糖、淀粉、脯氨酸含量却上升,这些变化有利于对抗互花米草带来的不利影响。 【英文摘要】 Kandelia candel seedlings were mix-cultured with Spartina ...
何斌源 +5 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Multi‐element Prussian blue analog (PBA) nanocomposites have attracted wide attention for their superior characteristics to single‐functional nanomaterials in extensive applications of diagnosis and therapy. In this study, a novel hollow nanocomposite was designed and fabricated by embedding S2− and Ag nanoparticles into a NiCuMnFe (PBA).
Tao Ji +7 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
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Multimodal luminescent materials are crucial for advanced information encryption, real‐time dosimetry, and high‐resolution bioimaging, yet integrating orthogonal stimulus‐responsiveness into a single‐component system is challenging. Herein, we report a Pr3+‐doped Ca3Ga2Ge3O12 (CGGO: Pr3+) garnet phosphor that exhibits orthogonally addressable ...
Qi Chen +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Expanding near‐infrared (NIR) spectral response and utilizing ultraviolet (UV) photons are effective strategies for enhancing the power conversion efficiency (PCE) of lead halide perovskite solar cells (PSCs). However, the range of NIR spectral response extension and the utilization of UV light for devices are not enough, and the loss of ...
Li He +9 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
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
Effects of sedimentation thickness of shrimp pond cleaning discharges on Acanthus ilicifolius seedlings [PDF]
, 2012 模拟直接排入红树林的虾池清塘排出物在林地的不同沉积厚度(0、2、4、8 CM),研究其对培养424 d的红树植物老鼠簕(ACAnTHuS IlICIfOlIuS)幼苗生长和生理的影响。清塘排出物的加入对老鼠簕幼苗茎高、基径、叶片数、叶面积、生物量和相对生长率等生长指标都有显著促进作用。总体长势表现为沉积厚度8 CM>4 CM>2 CM>0 CM。生长指标显示只需少量清塘排出物的沉积(沉积厚度2 CM、4 CM)就能对幼苗的生长产生明显的促进作用,但大量排出物沉积的积累并不会带来更明显的促进作用 ...
叶勇, 李婷
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A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
wiley +1 more source