Results 51 to 60 of about 1,640 (307)

BLACK SEA: THE FUTURE OF THE MINERAL RESOURCE BASE [PDF]

open access: yesГеологія і корисні копалини Світового океану, 2019
The article considers possible ways of geological study and development of the mineral raw material complex of the Black Sea, in particular, the energy complex, oolite iron ores, building materials, mineral fertilizers, fresh water, titanium zirconium ...
Ye.F. Shnyukov
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Peculiarities of formation and mineralogical composition of Perha tinstone-columbite placers

open access: yes, 2010
Розглянуті геологічні і палеогеоморфологічні умови утворення колумбітових розсипів Пержанського рудного району. Визначені джерела розподілу рудних мінералів у розсипах та особливості їх мінералогічного складу. Показані перспективи подальшого вивчення і
Романюк, Л.С.
core   +3 more sources

ASSESSMENT OF GOLD MELT INFLUENCE ON THE PLATINOID MICROINCLUSIONS IN ANCIENT GOLD PRODUCTS: A COMPARISON WITH EXPERIMENTAL DATA [PDF]

open access: yesМинералогия, 2017
The results of gold melt influence on platinoid microinclusions in ancient gold products from the burial mounds of the Urals and Phanagoria are compared with the experimental data.
V.V. Zaykov   +9 more
doaj  

Mercury in Some Lakes of Gold Mining Area of the Southern Ural

open access: yesE3S Web of Conferences, 2013
The mercury content in bottom sediments of Kalkan Lake, of the Uchala district, the Southern Ural. It was assumed that high concentrations of mercury in fish due to pollution of bottom sediments as a result of amalgamation at developing of gold placers ...
Tatsy Y. G.
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Plume genesis of non-kimberlite diamonds

open access: yesЛитосфера, 2015
Calculations shown that a relatively low-temperature kimberlite magmas consolidated with decompression exploded on significant depth and formed pipes.
V. S. Shkodzinskiy
doaj   +2 more sources

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

ABOUT ANCIENT SOURCES OF DIAMONDS PLACERS

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2018
Basing on generalization of large actual material on complex investigation of diamond, its characteristic in Upper Paleozoic and  Mesozoic sedimentary thick layers of the Siberian platform has been  provided.
N. N. ZINCHUK
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

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