Results 31 to 40 of about 133,969 (266)

Sintering behavior and densification mechanisms of ultrafine molybdenum powders under varying compaction and sintering conditions

Journal of Materials Research and Technology
The sintering behavior of ultrafine molybdenum powders with a particle size of approximately 1 μm was systematically investigated. The impact of cold isostatic pressing (CIP) and sintering parameters on the densification of molybdenum was investigated. A
Qifei Zhang, Ziwen Zhu, Xiaolong Luo, Qingkui Li, Yongli Li, Xiaogang You, Zhongwei Zhao   +6 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Ultrafast recovery of Zn from waste galvanized iron sheet by ultrasound-assisted acid pickling and ion flotation techniques

Ultrasonics Sonochemistry
High-efficiency dezincification from waste galvanized iron sheets is crucial for resource recovery and environmental protection. In this work, ultrasound-assisted acid pickling and ion flotation techniques were combined to intensify the Zn extraction and
Chaoya Shi, Yanfang Huang, Shengpeng Su, Guihong Han, Hu Sun, Shuzhen Yang, Bingbing Liu   +6 more
doaj   +1 more source

Estimation of critical metal stock and recycling potential in China’s automobile industry

Frontiers in Environmental Science, 2022
The rapid expansion of electric vehicles (EVs) in China will induce a potential imbalance in the demand and supply of critical metals, which emphasized the importance of recycling critical metals.
Yang Li, Yanhui Liu, Shiyu Huang, Liangfan Sun, Yiyi Ju, Yiyi Ju   +5 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Cavitation nanobubbles enhancing the flotation of microfine ilmenite and associated fundamentals

Ultrasonics Sonochemistry
Nanobubbles (NBs) have been extensively utilized in mineral flotation, acting as secondary collectors to improve flotation efficiency. However, the fundamental interaction mechanisms between NBs and flotation collector remain unclear.
Fanfan Zhang, Wanchen Dong, Huijie Cai, Huaiyao Zhang, Xiangbo Fan, Yamin Kang, Yijun Cao, Guixia Fan   +7 more
doaj   +1 more source

Extraction of Rare-Earth Elements from Silicate-Based Ore through Hydrometallurgical Route

Metals, 2022
The European Union and several countries/regions classified the rare-earth elements (REEs), such as lanthanum, cerium, neodymium, and scandium, as critical due to the risk of supply interruption.
Amilton Barbosa Botelho Junior, Denise Crocce Romano Espinosa, James Vaughan, Jorge Alberto Soares Tenório   +3 more
doaj   +1 more source

Plecstatin inhibits hepatocellular carcinoma tumorigenesis and invasion through cytolinker plectin

Molecular Oncology, EarlyView.
The ruthenium‐based metallodrug plecstatin exerts its anticancer effect in hepatocellular carcinoma (HCC) primarily through selective targeting of plectin. By disrupting plectin‐mediated cytoskeletal organization, plecstatin inhibits anchorage‐dependent growth, cell polarization, and tumor cell dissemination.
Zuzana Outla, Jan Kosla, Magdalena Prechova, Lukas Frick, Patricia Bortel, Yasmin Borutzki, Andrea Bileck, Christopher Gerner, Samuel M. Meier‐Menches, Selma Osmanagic‐Myers, Martin Gregor   +10 more
wiley   +1 more source

W and Mo separation from waste W-Mo alloy by an integrated ultrasound acid leaching − alkali leaching – Solvent extraction process

Ultrasonics Sonochemistry
Tungsten-molybdenum (W-Mo) alloy are critical materials and widely used in aerospace and defense industries. During the manufacture, mechanical processing, and scrapping of W-Mo alloy products, a substantial quantity of waste W-Mo alloy is generated ...
Chaoya Shi, Bingbing Liu, Zeyi Xiao, Yanfang Huang, Hu Sun, Guihong Han   +5 more
doaj   +1 more source

Determination of 42 Trace Elements in Silicate Glass Reference Materials by High Spatial Resolution LA-ICP-MS

Yankuang ceshi, 2023
BACKGROUNDCritical metal elements are a group of metal elements including rare metal elements (e.g., Li, Be, Rb, Cs, Nb, Ta, Zr, Hf, W), rare earth elements (REEs), rare disperse elements (e.g., Ga, Ge, Se, Cd, In, Te, Re, Tl) and rare precious elements (
Tao HE, Chenxi ZHANG, Wen ZHANG, Yantong FENG, Ting LIANG, Xiaoyun QIU, Hui CAO, Zhaochu HU   +7 more
doaj   +1 more source