Results 51 to 60 of about 13,870 (267)

Study on the activities of the massive debris flows and sediment transport characteristics in the Grand Bend of the Yarlung Zangbo River Gorge, Xizang

Zhongguo dizhi zaihai yu fangzhi xuebao
The Grand bend of the Yarlung Zangbo River, located at the boundary between the middle and lower reaches of the basin, is one of the most developed areas for debris flow activities in China.
Cong ZHAO, Jingtao LIANG, Yongbo TIE, Xiaobo MA, Su ZHANG, Lingfeng GONG   +5 more
doaj   +1 more source

Assessment of key metals supply risk in China’s strategic emerging industries [PDF]

Ziyuan Kexue
[Objective] The increasingly complex and volatile international environment aggravates the instability of the global key metal supply chain. Assessing the key metal supply risks of strategic emerging industries provides an important reference for ...
SUN Han, WANG Xiaoxue, YANG Xiaohui, CHENG Jinhua
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Closed-loop fluorine sequestration via coordinated leaching-selective precipitation: Achieving zero-emission bastnaesite processing

Results in Engineering
This study presents a sustainable hydrometallurgical process for refining bastnaesite, integrating oxidation roasting, HCl coordination leaching, and thermal reductive precipitation within a closed-loop system. By utilizing Ce4+-F- coordination chemistry,
Qionghua Xie, Longsheng Zhao, Zhiqi Long, Liangshi Wang   +3 more
doaj   +1 more source

China's Nonferrous Metals Industry and Implications for Korea-China FTA Negotiations [PDF]

Journal of International Logistics and Trade, 2013
Korea and China have promoted a bilateral FTA since 2005 to upgrade their economic relationships. If the Korea-China FTA is concluded, then trade between the two countries is likely to involve substantial changes both quantitatively and qualitatively ...
Jung-O Ko, Jung-ran Cho
doaj   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Stabilization effect and mechanism of heavy metals by microbial consortium of phosphate-solubilizing bacteria and urease-producing bacteria

Frontiers in Microbiology
IntroductionStabilization of heavy metals through phosphate-solubilizing bacteria (PSB) induced phosphate precipitation and urease-producing bacteria (UPB) induced carbonate precipitation are promising bioremediation methods.
Xuezhe Zhu, Xuezhe Zhu, Xuezhe Zhu, Xuezhe Zhu, Xuezhe Zhu, Xuezhe Zhu, Yupin Zhou, Yupin Zhou, Yupin Zhou, Yupin Zhou, Yupin Zhou, Yupin Zhou, Zhenghao Yan, Yongfang Yan, Shuangquan Li, Shuangquan Li, Shuangquan Li, Shuangquan Li, Shuangquan Li, Mingjiao Yu, Mingjiao Yu, Mingjiao Yu, Mingjiao Yu, Mingjiao Yu, Xiao Yan, Xiao Yan, Xiao Yan, Xiao Yan, Xiao Yan, Mingjiang Zhang, Mingjiang Zhang, Mingjiang Zhang, Mingjiang Zhang, Mingjiang Zhang   +33 more
doaj   +1 more source

Microbes vary strategically in their metalation of mononuclear enzymes

Proceedings of the National Academy of Sciences
Studies have determined that nonredox enzymes that are cofactored with Fe(II) are the most oxidant-sensitive targets inside Escherichia coli . These enzymes use Fe(II) cofactors to bind and activate substrates. Because of their solvent exposure, the metal can be accessed and oxidized by reactive oxygen species ...
Sanjay Kumar Rohaun, Ramakrishnan Sethu, James A. Imlay   +2 more
openaire   +2 more sources

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source