Results 131 to 140 of about 32,324 (258)

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

Recent advances in Joule‐heating synthesis of functional nanomaterials for photo and electrocatalysis

PhotoMat, EarlyView.
This paper presents a comprehensive overview of recent advancements in Joule‐heating synthesis of photo and electrocatalysts, emphasizing its benefits and applications. The objective is to offer an effective strategy for enhancing the diversity and performance of catalytic materials.
Jiaqi Li, Laiyu Luo, Siyu Wang, Haojie Song, Baojiang Jiang   +4 more
wiley   +1 more source

Chemical environments of submarine hydrothermal systems [PDF]

Perhaps because black-smoker chimneys make tremendous subjects for magazine covers, the proposal that submarine hydrothermal systems were involved in the origin of life has caused many investigators to focus on the eye-catching hydrothermal vents.
Shock, Everett L.
core   +1 more source

Subsurface Investigations of Cryo‐Hydrogeological Features in a High Arctic Catchment Under Transition

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Wawrzyniak Tomasz, Oryński Szymon, Marciniak Artur, Osuch Marzena   +3 more
wiley   +1 more source

Impact of hydrothermal activity on marine barium isotope composition: a case study from the Southwestern Indian Ocean

Frontiers in Marine Science
The cycling of barium (Ba) is closely linked to marine biogeochemical processes. Barium and its isotopes are commonly used as tracers for marine productivity, seawater alkalinity, and ocean circulation.
Chunxiao Zhao, Li Li, Li Li, Li Li, Jiejun Li, Ruifang C. Xie, Ruifang C. Xie, Xiaojing Wang, Xiaojing Wang, Xuefa Shi, Xuefa Shi, Xuefa Shi   +11 more
doaj   +1 more source

Valorization of Garcinia humilis Residues in Active Collagen/Starch Films for Biodegradable Packaging Applications

Packaging Technology and Science, EarlyView.
Residues from Garcinia humilis were used to obtain a phenolic‐rich extract (GHRE) and incorporated into collagen–starch films. The addition of GHRE improved antioxidant activity, thermal stability and elasticity, while reducing water vapour permeability.
Érica da Costa Monção, Cristiani Viegas Brandão Grisi, Rita de Cassia Andrade da Silva, Sanierlly da Paz do Nascimento, Priscila Santos Souza, Laís Chantelle de Lima, Angela Maria Tribuzy de Magalhães Cordeiro, Antonia Lucia de Souza   +7 more
wiley   +1 more source

Neogene Hydrothermal Fe‐ and Mn‐Oxide Mineralization of Paleozoic Continental Rocks, Amerasia Basin, Arctic Ocean

Geochemistry, Geophysics, Geosystems
Rocks dredged from water depths of 1,605, 2,500, 3,300, and 3,400 m in the Arctic Ocean included Paleozoic continental rocks pervasively mineralized during the Neogene by hydrothermal Fe and Mn oxides.
James R. Hein, Kira Mizell, Amy Gartman
doaj   +1 more source

A general and green approach of pH‐sensitive ZIF‐67 for encapsulating active substances

Smart Molecules, EarlyView.
Zeolitic imidazolate framework‐67 (ZIF‐67) was successfully synthesized in deionized water for 2 h in this work; meanwhile, various active substances could be encapsulated in one‐pot with the same process, resulting in high loading rates. The study delved into the growth mechanism, morphological difference and loading capacity.
Xinyi Sun, Yan Qi, Xinhao Che, Lulu Zhou, Yuxin Li, Lei Zhang, Jing Hu   +6 more
wiley   +1 more source

Ocean circulation contributes to genetic connectivity of limpet populations at deep‐sea hydrothermal vents in a back‐arc basin

Evolutionary Applications
For endemic benthos inhabiting hydrothermal vent fields, larval recruitment is critical for population maintenance and colonization via migration among separated sites. The vent‐endemic limpet, Lepetodrilus nux, is abundant at deep‐sea hydrothermal vents
Yuichi Nakajima, Masako Nakamura, Hiromi Kayama Watanabe, Jun‐ichiro Ishibashi, Hiroyuki Yamamoto, Satoshi Mitarai   +5 more
doaj   +1 more source

The Role of Oxidative Stress in Periodontitis

Journal of Periodontal Research, EarlyView.
Oxidative stress is involved in multiple chemical reactions that take place in different intracellular organelles: mitochondria, rough endoplasmic reticulum, peroxisomes, autophagy, and aging, and can be influenced by exogenous factors: nutrition, physical activity, psychological status, environmental conditions, microbiome, and drugs.
Pedro Bullon, Francesca Giampieri, Beatriz Bullon, Maurizio Battino   +3 more
wiley   +1 more source