Results 1 to 10 of about 72,349 (78)
The unseen invaders: Tracking phylogeographic dynamics and genetic diversity of cryptic Pomacea canaliculata and P. maculata (Golden apple snails) across Taiwan. [PDF]
The Invasion of Golden apple snails (Pomacea spp.), has caused significant ecological and economic damage across Taiwan. Our study focuses on the understanding of genetic diversity, distribution, and path of invasion of these snails across the Taiwan to aid improved mitigation approaches.
Banerjee P +7 more
europepmc +2 more sources
Spectral Induced Polarization Response of Clay Rock Samples with a High Value of Pyrite [PDF]
The induced polarization (IP) response in media containing clay and/or metallic minerals has been modeled in different research. Increasing the IP applications and measurements has revealed these models’ limitations.
Saeide Ahmadi, Ahmad Ghorbani
doaj +1 more source
Stability analysis in 4th Gol-e-Gohar Mine with residual parameters method and strain softening approach [PDF]
Today, numerous surface and underground mining and construction projects can be found worldwide, built on a rock bed and surrounded by rock. Open pit mines are considered the primary sector for mineral production in the mining industry.
Afshar Amiri +2 more
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SiC对粉碎烧结法制备P型Bi0.5Sb1.5Te3合金热电性能的影响
向粉碎法制备的Bi0.5Sb1.5Te3+5%Te(质量分数)合金粉体中混入不同体积分数的SiC颗粒,利用放电等离子体烧结法制备SiC复合块体材料,探究块体材料组织和热电性能的变化规律。研究发现:随着SiC体积分数的增加,块体材料的取向性弱化,组织细化,载流子浓度增加,迁移率降低;由于取向性弱化及组织细化,加强了声子散射,降低了晶格热导率。由于SiC复合块体材料的电学性能恶化,块体材料的无量纲热电优值(ZT)并未获得显著的提升;当SiC体积分数为0.40%时,SiC复合块体材料在322 ...
王小宇 +7 more
doaj +1 more source
表面改性是使材料表面获得与其基体不同微观组织的处理技术,能够有效调控材料表面的力学性能。因此,将表面改性方法应用于改善硬质合金表面的微观组织,能够有效避免均匀结构硬质合金显微结构–宏观性能的局限性,为制备高性能非均匀结构硬质合金提供技术方案。由于硬质合金表面改性研究的起步较晚且表面改性方法较多,表面改性方法的选取及其改性机理依然面临思路不清的问题。本文总结了化学表面改性梯度硬质合金的材料体系、制备机理、微观结构及力学性能,概括了物理表面改性得到的硬质合金涂层方法与功能 ...
陈健 +4 more
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Heat treatment and properties of powder forged Fe–Ni–Cu–C–Mo gear materials
The heat treatments of the powder forged Fe‒Ni‒Cu‒C‒Mo materials after forging were studied. The continuous cooling transformation diagram of the powder forged Fe‒Ni‒Cu‒C‒Mo alloys was constructed to guide the selection of cooling process after forging ...
WANG Qi +5 more
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The composite films of M/TiO2 (M = Al, Sn, Zn, Ti) were prepared by the two-step mechanical ball milling. The microstructure and phase composition of the composite coating were analyzed by the optical microscopy (OM) and X-ray diffraction (XRD), the ...
LIU Gai-hua +3 more
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Ti(C, N) powders were synthesized by the hydrolysis precipitation-carbothemal reduction and nitridation method, using TiCl4 and carbon black as the raw materials.
LIU Jia-wei +3 more
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Investments and benefits in computer supported systems for remote monitoring and management in real time [PDF]
Contemporary computer supported technologies unify a multitude of functions, from geological explorations, through planning, design, mining, auxiliary and logistic activities, monitoring, analysis, decision making to the real time management.
Vujić Slobodan +3 more
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Change the uniaxial compressive strength of paste backfill depending on change the parameters [PDF]
Traditional methods of ore mining in the underground mine Jama Bor cannot be applied to the ore body Borska reka for several reasons: the position of the ore body to the terrain surface, mining infrastructure and proximity of settlements, physical ...
Đurđevac-Ignjatović Lidija +3 more
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