Results 31 to 40 of about 13,137 (167)
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
On operator semi-stable distributions on RN(有关RN上的算子半稳定分布)
对于(c,B)-算子半稳定(operator semi-stable)分布μ,利用c和B的特征根得出 的充分必要条件,其中M是μ的Lévy测度.并利用这个条件得出c和B与算子半稳定过程样本函数的变差之间的关系. 最后,给出了算子半稳定分布是严格算子半稳定的判据.
WANGCheng(王成) +1 more
doaj +1 more source
Analysis of Mechanical Behavior and Anti-overturning Stability of Ramp Bridge [PDF]
匝道弯桥线型优美、适应性强,广泛应用于城市道路交通建设中。然而,较小的曲率半径也容易引发一些病害事故,例如支座脱空,梁体侧移,预应力筋崩出,甚至梁体倾覆等。为了分析匝道弯桥的受力性能,同时找出这些问题产生的主要原因以及作用规律,本文以厦门实际匝道弯桥为背景,通过有限元建模进行了研究分析。 首先,运用有限元软件建立不同曲率半径以及不同支座布置形式的多座预应力匝道弯桥实体模型,分析它们在多种荷载工况下的受力性能,研究引起匝道弯桥发生支座脱空、梁体爬移、预应力筋崩出等病害的原因。有限元分析结果表明 ...
裘是
core
Analysis of failure mode and deformation evolution characteristics of slopes under the influence of highwall mining [PDF]
The slope has the typical deformation failure and instability characteristics under the interaction of natural and human factors which has been given a lot of attention in geotechnical and mining engineering.
Chuangye WANG +4 more
core +1 more source
ABSTRACT The utilization of carbonaceous anodes in electrochemical systems, particularly potassium‐ion batteries (PIBs), remains hindered by sluggish kinetics and modest capacities, which are caused by the intrinsic ion storage mechanisms and constrained interlayer spacings.
HaiSong Chen +7 more
wiley +1 more source
Cs2SnI6: A Perovskite‐Based Electromagnetic Wave Absorbing Material
ABSTRACT Lead halide perovskites and carbon‐based materials are interesting, high‐performing electromagnetic wave absorbing materials. However, only a few studies have been carried out to examine in detail the electromagnetic wave absorption properties of these materials.
Fei Han +11 more
wiley +1 more source
我国现行的产险业偿付能力最低资本标准直接照搬了欧盟1973年的标准。实践表明,这一标准存在赔款基础额度标准形同虚设、分段临界点设置不符合我国实际、赔款与保费之比的隐含假设不符合我国实际、费用风险不能体现等重大缺陷。以产险公司保障型业务的保险风险为研究对象,基于财务稳定系数,给出产险公司偿付能力最低资本的新标准 ...
奚晓军
core
Mechanism of bending-sideslip of inclined thick bedding slope: A case study of Qingkou landslide in Wulong, Chongqing [PDF]
The Qingkou landslide in Wulong, Chongqing, has developed on an inclined thick abrupt cliff, with a large area of goaf formed due to hundreds of years of coal mining below.
Junzhi LIN +3 more
core +1 more source
ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan +9 more
wiley +1 more source
Triggering mechanism and secondary landslide analyses of the “7•23” Shuicheng landslide in Guizhou [PDF]
On July 23, 2019, a catastrophic landslide occurred in Jichang Town, Shuicheng District, Liupanshui City, Guizhou Province, resulting in the tragic loss of 43 lives, with 9 people still missing, and causing direct economic losses estimated at ...
Bilong LIU +5 more
core +1 more source

