Results 61 to 70 of about 160,665 (306)

Anthropogenic heavy metals in organic forest soils [PDF]

, 2006
The continuous heavy metal accumulation in organic topsoils in forests will pose problems for soil microbial health for many years to come. The primary objective of this thesis was to investigate heavy metal pollution in forest soils and its effects on ...
Åkerblom, Staffan
core  

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

AscF in the mycobacterial CIII–CIV supercomplex lacks metal and nucleotide binding but links malate oxidation to respiration

FEBS Letters, EarlyView.
The mycobacterial CIII‐CIV respiratory supercomplex is an obligate assembly, encompassing several subunits of unknown functions. We have characterized the intracellular subunit AscF, and show that it is unlikely to be a sensor for metals or nucleotides, but is required for growth on nonfermentable energy sources, and likely works as an adapter for ...
Eni Rile, Riccardo Diamanti, Daniel Lundin, Soni Sharma, Robin Lissner, Coenraad P. Kuil, Martin Högbom, Dirk Bald, Dan Sjöstrand   +8 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

A Fluid Inclusion and Critical/Rare Metal Study of Epithermal Quartz-Stibnite Veins Associated with the Gerakario Porphyry Deposit, Northern Greece

Applied Sciences, 2022
The Gerakario Cu-Au porphyry deposit in the Kilkis ore district, northern Greece, contains epithermal quartz-stibnite veins on the eastern side of the deposit, which crosscut a two-mica gneiss. Metallic mineralization in these veins consists of stibnite +
Christos L. Stergiou, Vasilios Melfos, Panagiotis Voudouris, Lambrini Papadopoulou, Paul G. Spry, Irena Peytcheva, Dimitrina Dimitrova, Elitsa Stefanova   +7 more
doaj   +1 more source

Impact of Metal and Metal Oxide Nanoparticles on Plant: A Critical Review [PDF]

Frontiers in Chemistry, 2017
Un besoin croissant de nanotechnologies dans diverses industries peut entraîner une énorme dispersion des nanoparticules dans l'environnement dans les années à venir. Une préoccupation concernant l'interaction des nanoparticules avec la flore et la faune est soulevée en raison d'une charge croissante de celles-ci dans l'environnement.
Anshu Rastogi, Anshu Rastogi, Marek Zivcak, Oksana Sytar, Oksana Sytar, Hazem M. Kalaji, Hazem M. Kalaji, Xiaolan He, Sonia Mbarki, Marian Brestic   +9 more
openaire   +3 more sources

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Critical limits and effect based approaches for heavy metals and persistent organic pollutants Proceedings [PDF]

, 1998
The workshop on critical limits and effects-based approaches for heavy metals and persistent organic pollutants marks an important step forward in the work under the Convention on Long Range Transboundary Air Pollution.
Gregor, H.D., Umweltbundesamt, Berlin (Germany), Sprange, T., Hoenerbach, F. (eds.)   +3 more
core  

Geopolitics and rare earth metals [PDF]

, 2022
Rare earth elements are critical in the production of consumer products, renewables, and green, industrial, and defense products. Using more than thirty years of Japanese import data, we document statistically significant relationships between ...
Omura, Akihiro, Fan, John Hua, John Hua Fan, Eduardo Roca, Akihiro Omura, Roca, Eduardo   +5 more
core   +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