Results 21 to 30 of about 74,877 (267)

Rates of Hydrothermal Reactions

Science, 1983
The rates of reactions of silicates and aqueous fluids follow zero-order kinetics controlled by the reacting surface area with the rate constant given by the equation: log k ≏ -2900/ T -6.85, where T is temperature and where k has the unit's ...
Wood, B, Walther, J
openaire   +3 more sources

Relative Importance of Chemoautotrophy for Primary Production in a Light Exposed Marine Shallow Hydrothermal System

Frontiers in Microbiology, 2017
The unique geochemistry of marine shallow-water hydrothermal systems promotes the establishment of diverse microbial communities with a range of metabolic pathways.
Gonzalo V. Gomez-Saez, Solveig I. Bühring, Petra Pop Ristova, Stefan M. Sievert, Marcus Elvert, Kai-Uwe Hinrichs   +5 more
doaj   +1 more source

Hydrothermal studies in the aegean sea

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere, 2000
The aims of the Aegean Hydrothermal Fluxes and Biological Production project were to estimate the fluxes of fluids, chemicals, heat and bacteria from hydrothermal vents, establish the controls on venting dynamics, measure the productivity in the region of the vents and establish the effect of the vents on biodiversity of both prokaryotes and eukaryotes.
Dando PR, Aliani S, Arab H, Bianchi CN, Brehmer M, Cocito S, Fowler SW, Gundersen J, Hooper LE, Kolbl R, Kuever J, Linke P, Makropoulos KC, Meloni R, Miquel JC, Morri C, Muller S, Robinson C, Schlesner H, Sievert S, Stohr R, Stuben D, Thomm M, Varnavas SP, Ziebis W   +24 more
openaire   +6 more sources

Fractionation of plant-cuticle-based bio-oils by microwave-assisted methanolysis combined with hydrothermal pretreatment and enzymatic hydrolysis

Heliyon, 2019
Microwave-assisted methanolysis was performed to fractionate a mixture of fatty acid methyl-esters from the cuticles of various wild plants and agricultural wastes.
Shuntaro Tsubaki, Kiriyo Oono, Ayumu Onda   +2 more
doaj   +1 more source

Probing rapid carbon fixation in fast-growing seaweed Ulva meridionalis using stable isotope 13C-labelling

Scientific Reports, 2020
The high growth rate of Ulva seaweeds makes it a potential algal biomass resource. In particular, Ulva meridionalis grows up to fourfold a day. Here, we demonstrated strong carbon fixation by U.
Shuntaro Tsubaki, Hiroshi Nishimura, Tomoya Imai, Ayumu Onda, Masanori Hiraoka   +4 more
doaj   +1 more source

Bacterial Diversity and Biogeochemistry of Two Marine Shallow-Water Hydrothermal Systems off Dominica (Lesser Antilles)

Frontiers in Microbiology, 2017
Shallow-water hydrothermal systems represent extreme environments with unique biogeochemistry and high biological productivity, at which autotrophic microorganisms use both light and chemical energy for the production of biomass. Microbial communities of
Petra Pop Ristova, Thomas Pichler, Michael W. Friedrich, Solveig I. Bühring   +3 more
doaj   +1 more source

Effect of the coexistence of SO32− and PO43− on the adsorption performance of zeolite-loaded FeOOH@ZnO for S2−

Water Science and Technology, 2021
The present study deals with the synthesis of zeolite-loaded FeOOH@ZnO by hydrothermal method and investigates the effects of coexisting SO32− and PO43− ions in the aqueous solution on the adsorption performance for S2−.
Fen Li, Youjing Li, Baocai Ge, Jinguang Hu, Cailian Yu, Fanzhu Meng   +5 more
doaj   +1 more source

Understanding the Compositional Variability of the Major Components of Hydrothermal Plumes in the Okinawa Trough

Geofluids, 2018
Studies of the major components of hydrothermal plumes in seafloor hydrothermal fields are critical for an improved understanding of biogeochemical cycles and the large-scale distribution of elements in the submarine environment. The composition of major
Zhigang Zeng, Xiaoyuan Wang, Chen-Tung Arthur Chen, Haiyan Qi   +3 more
doaj   +1 more source

Influence of Curing Regimes on Engineering and Microstructural Properties of Geopolymer-Based Materials from Water Treatment Residue and Fly Ash

International Journal of Technology, 2021
Geopolymerization is a new method for treating water treatment residue (WTR) from water purification plants to reduce the amount of stored land in urban areas. Polymeric bond formation depends on the curing conditions.
Nguyen Hoc Thang, Bui Khac Thach, Do Quang Minh   +2 more
doaj   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source