Results 121 to 130 of about 194,346 (301)

Replacement of Ores Recorded by Textures and Chemical Compositions of Sphalerite: An Example From the Furutobe Kuroko Deposit, Akita, Japan

Geological Journal, EarlyView.
Coupled dissolution‐reprecipitation of early formed Cd‐, Fe‐, Ag‐ and Sb‐poor sphalerite through interaction with high‐temperature and high‐sulphur fugacity Cu‐rich fluids, responsible for the formation of the yellow ores, resulted in the formation of Cd‐, Fe‐, Ag‐ and Sb‐rich, heavily chalcopyrite‐diseased sphalerite and enrichment of critical metals ...
Manuel Nopeia, Ryohei Takahashi, Andrea Agangi, Pearlyn Manalo, Hinako Sato   +4 more
wiley   +1 more source

Variational quantum Monte Carlo calculations for solid surfaces

, 2000
Quantum Monte Carlo methods have proven to predict atomic and bulk properties of light and non-light elements with high accuracy. Here we report on the first variational quantum Monte Carlo (VMC) calculations for solid surfaces.
A. J. Williamson, A. J. Williamson, A. Malatesta, D. M. Ceperley, D. R. Hamann, D. R. Hamann, H. Eckstein, H. Eckstein, L. Hedin, L. Mitáš, M. S. Hybertsen, N. Fitzer, N. Metropolis, P. R. C. Kent, P. R. C. Kent, R. Bahnsen, R. Redmer, S. Fahy, S. Fahy, T. Kato, W. M. C. Foulkes, W. Schattke   +21 more
core   +1 more source

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, EarlyView.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source

Arsenic Mobility in As-Containing Soils from Geogenic Origin: Fractionation and Leachability

Journal of Chemistry, 2018
The lithogenic arsenic in soils of the Anllóns River basin (Spain) was quantified, its chemical fractions were determined, and its leachability characteristics were compared under various experimental conditions.
Diego Martiñá-Prieto, Javier Cancelo-González, María Teresa Barral   +2 more
doaj   +1 more source

Assessment of groundwater quality of Ballia district, Uttar Pradesh, India, with reference to arsenic contamination using multivariate statistical analysis

Applied Water Science, 2018
A total of 22 water quality parameters were selected for the analysis of groundwater samples with reference to arsenic contamination. Samples were collected in the pre-monsoon and monsoon seasons of the year 2013.
Asha Lata Singh, Vipin Kumar Singh
doaj   +1 more source

Arsenic in the Water, Soil Bedrock, and Plants of the Ester Dome Area of Alaska [PDF]

, 1982
Concentrations of arsenic as large as 10 ppm (200 times the safe limit for drinking water) occur in the groundwater of a mineralized residential area near Fairbanks. Bedrock of the area contains 750 ppm As, primarily as arsenopyrite and scorodite. The
Dinkel, Donald, Forbes, Robert B., Hawkins, Daniel B., Hok, Charlotte I.   +3 more
core  

Systemic anti‐cancer therapy associated with the occurrence of peripheral neurotoxicity and, specifically, peripheral neuropathy

International Journal of Cancer, EarlyView.
What's New? While the effectiveness of systemic anticancer therapy is well documented, it commonly causes severe toxicity. This study of the 467 systemic anticancer therapy agents currently approved globally for clinical and/or research purposes found that peripheral neurotoxicity is associated with 45% of classical chemotherapies, 21% of targeted ...
Cassie Higgins, Lynn R. Gauthier, Blair H. Smith, Lesley Colvin   +3 more
wiley   +1 more source

SUMOylation regulates tumorigenesis and progression: Molecular mechanisms and therapeutic applications

Interdisciplinary Medicine, EarlyView.
SUMOylation, a dynamic post‐translational modification, acts as a master regulator at the heart of tumor malignancy. Our work delineates how the SUMOylation cycle—mediated by E1/E2/E3 enzymes and reversed by SENPs—orchestrates multiple hallmarks of cancer. The central pathway converges on three critical pathological axes: 1.
Yimao Wu, Zichang Chen, Yinting Hu, Gokhan Zengin, Qian Zhang, Meng‐Yao Li, Wenlong Sun   +6 more
wiley   +1 more source

Macrophage extracellular vesicles deliver Mef2d proteins to aggravate Bacteroides fragilis pathogenicity in type 2 diabetes arterial calcification

Interdisciplinary Medicine, EarlyView.
Bacteroides fragilis is associated with type 2 diabetes (T2D) arterial calcification and can be activated by macrophage‐derived extracellular vesicles (EVs). BF takes up EVs via receptor‐mediated endocytosis, and activation is induced by EV‐derived Mef2d, thereby inhibiting ArsR family transcriptional regulator transcription.
Cong Chen, Rong He, Jirong Luo, Zhengfeng Liang, Qunwen Pan, Shuangquan Liu, Jingsong Cao   +6 more
wiley   +1 more source

Paternal Exposure to the Neonicotinoid Pesticide Clothianidin Alters Sperm MicroRNA Profiles in Mice and Intergenerationally Reduces Locomotor Activity in Male Offspring

Journal of Applied Toxicology, EarlyView.
ABSTRACT Accumulating evidence suggests that paternal environmental factors have epigenetic effects on sperm and influence offspring. Neonicotinoid pesticides (NNs), which are widely used around the world, are known to affect offspring phenotypes through maternal exposure in mice, but the effect of the paternal exposure remains unknown.
Makiko Ito, Tetsushi Hirano, Sarika Nunobiki, Ayano Yoshimoto, Yukako Hara, Yuya Ishida, Sakura Yonoichi, Youhei Mantani, Toshifumi Yokoyama, Yoshiaki Tabuchi, Yoshinori Ikenaka, Nobuhiko Hoshi   +11 more
wiley   +1 more source