Results 21 to 30 of about 51,819 (243)

Spatiotemporal fractional numerical simulation of sulfate contamination remediation in goaf water from the abandoned Ningwu coal mine

Shuiwen dizhi gongcheng dizhi
In response to the problem of sulfate contamination in the goaf water of the abandoned Ningwu coal mine, this study investigated the impact of different treatment measures on the migration and diffusion of pollutants, providing a scientific basis for ...
Fenggang DAI, Chongyao WANG, Aihua WEI, Fawang ZHANG, Yu LIU   +4 more
doaj   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

Advanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Application of structural geology in the exploration for residual gem deposits of Sri Lanka [PDF]

Bulletin of the Geological Society of Finland, 1993
Geological investigations of some major gem-bearing areas of Sri Lanka have shown that the gem deposits are controlled by the geological structure. Corundum deposits are generally associated with axial plane areas of tight, doubly plunging synclinoria ...
D.P.J. Mendis, M.S. Rupasinghe, C.B. Dissanayake   +2 more
doaj   +1 more source

Grain Refinement During Severe Plastic Deformation and Similitude of Subgrain Formation: A Molecular Dynamics Study

Advanced Engineering Materials, EarlyView.
Molecular dynamics is used to investigate structure refinement during severe plastic deformation. The results show similitude with experimental data. Molecular dynamics simulations of severe plastic deformation of monocrystalline and polycrystalline samples by multiaxial compression of aluminum are carried out.
Roberto B. Figueiredo
wiley   +1 more source

Structural Augmentation in Seismic Data for Fault Prediction

Applied Sciences, 2022
Fault interpretation tasks become more and more difficult as the complexity of seismic exploration increases, especially for ultra-deep seismic data. Recently, numerous researchers have utilized automatic interpretation techniques based on deep learning ...
Shenghou Wang, Xu Si, Zhongxian Cai, Yatong Cui   +3 more
doaj   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Source apportionment and ecological risk assessment of heavy metals in sediments of Dongping lake based on PCA-PMF model

Scientific Reports
Accurately characterizing the spatial distribution of heavy metals in lake surface sediments, analyzing their sources, and identifying potential ecological risks are important scientific supports for lake ecosystem management.
Kuanzhen Mao, Xinfeng Wang, Kaining Yu, Mingming Li, Yibing Wang, Ge Gao, Shitao Geng, Hongliang Song, Wenbin Ning, Hongyan An, Baizhong Yan   +10 more
doaj   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

Advanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora, Seung Ju Choi, Jaeki Jeong, Silvia Orecchio, Inés García‐Benito, Manuel Pérez‐Escribano, Joaquín Calbo, Likai Zheng, Minseop Byun, Seyeong Song, Gi‐Hwan Kim, Shaik M. Zakeeruddin, Seog‐Young Yoon, Yimhyun Jo, Agustín Molina‐Ontoria, Enrique Ortí, Nazario Martín, Michael Grätzel   +17 more
wiley   +1 more source

Integrating Gravimetry and Spatial Analysis for Structural and Hydrogeological Characterization of the Northeast Tadla Plain Aquifer Complex, Morocco

Geographies
This study was conducted in the northeast of the Tadla plain, within the Beni Mellal-Khenifra region of Morocco. The primary objective is to elucidate the geometric and hydrogeological characteristics of this aquifer by analyzing and interpreting data ...
Salahddine Didi, Said El Boute, Soufiane Hajaj, Abdessamad Hilali, Amroumoussa Benmoussa, Said Bouhachm, Salah Lamine, Abdessamad Najine, Amina Wafik, Halima Soussi   +9 more
doaj   +1 more source

Gold and gold-bearing volcanogenic massive sulphide deposits of the Central Cuba

Известия высших учебных заведений: Геология и разведка, 2021
Background. Volcanogenic massive sulphide deposits (VMS) are the most important sources of Cu and Zn; they account for a large share of the world production of Pb, Ag, Au, Se, Te, Bi and Sb, as well as small amounts of many other metals. The polymetallic
D. De la Nuez Colon, M. Santa Cruz Pacheco   +1 more
doaj   +1 more source