Results 81 to 90 of about 718,980 (307)
Experimental and analytical investigations of non-skeletal carbonate production [PDF]
, 2022 The overriding aim of this research is concerned with understanding the chemical controls on carbonate sedimentation in naturally occurring highly alkaline systems that produce enigmatic mineral assemblages.
Roest-Ellis, Sascha
core +1 more source
A Model for Predicting Borehole Wall Stability in High Stress Fractured Formations
Zuanjingye yu wanjingyeTo deal with the wellbore collapse and instability problems encountered in drilling the broken marine carbonate formations in Shunbei and western Sichuan, a visual true triaxial wellbore instability physical simulation experimental platform was prepared ...
Weiji WANG, Dujie ZHANG
doaj +1 more source
Genetic types and distinguished characteristics of dolomite and the origin of dolomite reservoirs
Petroleum Exploration and Development, 2018 To find out the origin of dolomite, the precipitation of primary dolomite, and the formation of pores in dolomite, petrologic and geochemical characteristics of typical samples from Sichuan and Tarim Basin were analyzed based on the previous ...
Wenzhi ZHAO +5 more
doaj +1 more source
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Discovery of the deep-sea NEOM Brine Pools in the Gulf of Aqaba, Red Sea
Communications Earth & Environment, 2022 The sedimentary signals of climatic and tectonic events are preserved in pristine condition by the hypersaline environment within brine pools discovered by remote observations, and core and brine sampling, in the Gulf of Aqaba, off the Saudi Arabian ...
Sam J. Purkis +16 more
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FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
Application of sequence stratigraphic concepts to the cretaceous Urgonian carbonate platform, southeast France [PDF]
, 1992 Carbonate platforms are increasingly being studied using sequence stratigraphic concepts and models borrowed from the study of siliciclastic shelves in passive margin settings. The direct transposition of the stratigraphic model for a siliciclastic shelf
Hunt, David William
core
EXAMINATION OF THERMAL PROPERTIES OF CARBON-CARBON AND GRAPHATIZED CARBON-CARBON COMPOSITES
Frontiers in Heat and Mass Transfer, 2013 Thermal characterization is essential to the proper assignment of composites to specific applications. Specific heat, thermal diffusivity, and thermal conductivity are critical in the engineering design process and in the analysis of aerospace vehicles, space systems, power generation, transportation systems, and energy storage devices including fuel ...
Messiha Saad, Melanie Patrick
openaire +2 more sources
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source