Over the Tibetan Plateau, solar heating often produces strong convective instability in atmosphere. Using 3 years (1998–2000) of Tropical Rainfall Measuring Mission (TRMM) precipitation radar data, our investigations revealed a tower mast shape over Plateau both height‐longitude and height‐latitude cross‐sections. High rain rate center is located above 6km as penetrating into mid‐troposphere against nearby background, implying unique latent source injecting directly to middle Results...

Abstract The mechanical properties of existing materials can be improved with the Bouligand structure. However, most current studies mainly focus on improving material structure in ambient temperature environments and neglect weakening hot humid environments. Thus, we chose bamboo, which is highly hydrophilic a natural unidirectional structure, as raw to prepare bamboo composite laminates effect laminated was investigated. results showed that greatly affected by humid–hot environment,...

Freeze-thaw weathering can fragment sand and gravel materials, altering their mechanical properties. This study aims to simulate the effects of freeze-thaw by subjecting materials cycling tests. The tests were conducted in monsoonal freeze zone, long-term strength morphological indices sub-materials measured after 0, 5, 10, 50, 100 cycles (FTCs) using a spherical template indenter particle image analyzer. indicators that selected for this – equivalent diameter fractal dimension showed strong...

Abstract Natural fiber‐reinforced composites exhibit excellent mechanical properties. However, achieving a balance between properties and optimal acoustic performance remains challenge. In this study, four composite laminates with different stacking orders were fabricated using polyester fiber mats (WFs) palm sheaths (WPs) through hot‐press process. Moreover, the effects of on investigated. The results revealed that incorporation felts modification layup sequence WP significantly improved...

Abstract Despite a number of studies reporting glacier extent changes and their response to climate change over the eastern Tien Shan, mass-balance multiple decades are still not well reconstructed. Here, mass budgets on Karlik Range, easternmost Shan during time spans 1972–2000 2000–2015 quantified using digital elevation models reconstructed from topographic maps, SRTM X-band radar data ASTER images. The results exhibit significant loss in Range for two spans, with mean −0.19 ± 0.08 m w.e....

To understand the existence of complex meso-sized solute-rich clusters, which challenge understanding phases and phase equilibria, formation stabilization mechanisms clusters in solution during nucleation crystals associated physico-chemical rules are studied detail. An essential part mechanism is long-lived oligomers between solute molecules. By means density functional theory simulation nuclear magnetic resonance experiments, this work showed that tend to be π–π stacking dimers. Clusters...

For the construction of proposed Qinghai-Tibet Express Highway in permafrost regions, it will be necessary to use new technique cooling ground temperature by coarsely crushed rock layer with a low fines content. The heat convection governing equations based on airflow function variable permeability porous are derived. Comparison capability winter-time natural highway embankments various widths and an air-permeable side slope surface were studied using finite element method. result indicates...

Robust validation of the ensemble precipitation datasets was vital for assessing and then improving quality confident application in water energy cycle related research. In this study, performance Ensemble Multi-Satellite Precipitation Datasets using Dynamic Bayesian Model Averaging scheme (EMSPD-DBMA) evaluated compared against rain gauge networks, as well Day-1 Level 3 products newly launched Global Measurement (GPM) mission over Tibetan Plateau (TP). Comprehensive analyses daily estimates...

Fiber metal laminates (FMLs) are a type of thin-layer composite structure formed by curing alloys and materials at certain temperature pressure. This paper adopts surface machining to create grid-like on plates manufactures glass fiber using the treated prepreg. The then subjected three types mechanical performance tests: tension, compression, three-point bending, analyzing failure modes specimens under different conditions. experimental results show that compared without surface-designed...

江西省香炉山钨矿是江南古陆斑岩-矽卡岩钨多金属成矿带内具有代表性的早白垩世矽卡岩型钨矿床。矿床的WO₃储量约为22万t,平均品位约为0.641%。矿床的矿体以似层状和透镜状产出于燕山期黑云母花岗岩和寒武系杨柳岗组泥灰岩的接触带。本文在详细厘定成矿阶段矿物组合的基础上,对不同阶段产出的不同世代的白钨矿开展了原位LA-ICP-MS微量元素的系统测试。香炉山钨矿床可以划分为四个成矿阶段:矽卡岩阶段、退化蚀变阶段、石英-硫化物-白钨矿阶段和方解石-萤石阶段。根据各阶段矿物组合及与白钨矿共生关系,本次研究划分出四个阶段六个世代的白钨矿,分别为阶段Ⅰ白钨矿(产于云英岩中)、阶段Ⅱa和阶段Ⅱb白钨矿(产于退化蚀变岩)、阶段Ⅲa和阶段Ⅲb白钨矿(产于硫化物条带,Ⅲa为白钨矿核部,Ⅲb为白钨矿边部)和阶段Ⅳ白钨矿(产于石英-硫化物-白钨矿脉)。白钨矿的球粒陨石标准化稀土元素配分图有下凹型(阶段Ⅰ、阶段Ⅱa、阶段Ⅲb)、右倾型(阶段Ⅳ)和下凹右倾型(阶段Ⅲa)。各阶段白钨矿的微量元素特征表明,香炉山钨矿床白钨矿的∑REE含量高于世界上绝大部分脉状金和钨矿床,也高于我国华南地区钨...

Abstract This research aimed to investigate the morphological changes of sandy soils with a varying number freeze–thaw cycles (FTCs). The primary objective was characterize in particle morphology and establish relationship between FTCs these changes. Two variables, namely amount variation coefficient variation, were introduced as parameters soils. Statistical analysis performed using PIP9.1 dynamic image analyzer quantify characteristics soil particles. results showed that five...

Abstract For the purpose of exploring long-term variation regional SST, this paper studies historical SST in local sea areas and emission pattern greenhouse gases proposes a gray model based on atmospheric reflection which can be used to predict long time span. By studying grey systematic relationship between data, obtains development law temperature change, furtherintroduces different future gas scenarios as index coefficient determine corresponding changing results seawater next 50 years....