Results 131 to 140 of about 586,100 (219)
本发明揭示了一种具有垂直光路结构的薄膜应力测量装置及其应用。该薄膜应力测量装置包括多光束图形发生器以及光束位置探测器,所述多光束图形发生器与所述光束位置探测器互相垂直排布。本发明提高了薄膜应力测量精度,简化了薄膜应力测量装置的光路布局与装调要求,可被广泛应用于在薄膜应力离线测量装置、薄膜沉积设备 ...
王逸群 +5 more
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Visible‐Light‐Excited Optical Thermometry in Ca3Sc2Si3O12: Er3+ via an Efficient Eu2+ Bridge
ABSTRACT Er3+ ions are promising for optical thermometry due to their thermally coupled levels. However, their parity‐forbidden transitions result in weak and narrowband absorption, which restricts excitation to infrared lasers (e.g., 808, 980, or 1550 nm). Moreover, the single emission center inherently limits temperature sensitivity. In this work, we
Yi Liu +6 more
wiley +1 more source
本文通过试验和计算以及用有效应力参数法研究了平均应力对疲劳曲线的影响,用计算机算出国产LY12CZ 材料的有效应力参数公式中的常数m.1.有关疲劳曲线及其影响因素表示应力振幅S_α或最大应力S_(max ...
伍义生, 曾春华
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Enhanced Magnetocaloric Effect in Tb‐Co‐Ni Magnets via Chemical Pressure
ABSTRACT Magnetic refrigeration materials are significantly needed in versatile modern industries, including scientific research, aerospace, and health care, due to their potential applications in gas liquefaction and storage. Herein, a significantly enhanced magnetocaloric effect with a suitable operation temperature range of 53–114 K and a giant ...
Lei Xi +11 more
wiley +1 more source
ABSTRACT Because of superior transportability and high energy capacity, methanol is regarded as a potential hydrogen carrier. Photocatalytic methanol dehydrogenation offers a sustainable and cost‐effective method for releasing hydrogen. Conventional photocatalysts face challenging obstacles, including the low catalytic efficiency and rapid ...
Rundong Chen +9 more
wiley +1 more source
通过对爆炸在岩石中产生的应力波的物理分析,判断岩石应力应变关系的磁滞效应可能是应力波在岩石中衰减的主要物理机制.在线性磁滞模型下,用拉氏变换和渐近展开方法,求得应力波传播的解析解.特别是得到了应力波头以方式衰减的应力波的特解.这种解所具有的一系列特性(波形自相似,波形特征,走时和半衰期的关系,动力学和运动学参量的峰值等)与实践观测结果及已有经验公式有相当好的一致性.并表明衰减指数l仅由磁滞参数α和参数Q确定,Q为无量纲应力波头导数的绝对值.因此 ...
白以龙
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Recovering Critical Elements From Wastewater for Battery Materials: A Review
ABSTRACT Driven by global carbon neutrality goals, the transition toward a circular economy and sustainable resource management has become increasingly imperative. Given the indispensable role of battery technologies in modern energy storage systems, strategic elements such as lithium (Li), cobalt (Co), and nickel (Ni)—identified by the European ...
Ting Lei +5 more
wiley +1 more source
通过对微结构破坏模式的测量,反推出微构件材料的应力应变关系。在完成这一分析过程中,首先通过建模与分析,获得了刻划微结构力学行为的几何及物理参数关系,然后结合测量出的数据数值求解得到表征应力应变曲线的特征参量,进而获得应力应变曲线。结合薄膜 ...
杜莹, 舒思齐, 魏悦广, 赵海峰
core
ABSTRACT Tumor metastasis and recurrence are major reasons for the difficulty in curing cancer. Although some immunotherapy methods have been developed, they are still limited by immunosuppression, resulting in limited therapeutic efficacy against tumors.
Chen Ye +4 more
wiley +1 more source
为了研究J型铺设升沉运动对管道应力的影响,利用ABAQUS软件对管道进行有限元建模,分析了不同水深、铺管角度和管道容重下船体下方10 m和TDP附近管道的动态响应。建模时采用PSI单元模拟管道与海底土壤之间的相互作用,将土壤反力定义为非线性。分析结果表明,在船体升沉运动影响下,轴向张力的变化是导致管道应力变化的重要因素;TDP附近的应力变化不仅要考虑轴力变化,还要考虑弯矩变化;若以增大壁厚的方式增大容重,则管道抗弯刚度增大,尽管TDP处管道静态应力呈增大趋势,但最大动态应力相差不大 ...
焦晓楠 +5 more
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