Results 51 to 60 of about 69,562 (265)

Transient Pressure Build-Up in Saturated Column System from Buffering-Induced CO₂ Generation: Implications for Soil Liquefaction in Lignite Overburden Dumps

Geotechnics
Spontaneous liquefaction in the Lusatian lignite dump sites has raised significant geotechnical and environmental concerns. While mechanical influences have been extensively studied, hydrochemical investigations suggest an inner initial that is highly ...
Donata N. W. Wardani, Nils Hoth, Sarah Amos, Kofi Moro, Johanes Maria Vianney, Carsten Drebenstedt   +5 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Nonlinear seepage mechanical model and bifurcation analysis for fluid-solid coupling in fractured rock mass

Scientific Reports
With the development of underground engineering and oil and gas exploitation, the problem of fluid-solid interaction in fractured rock mass has become increasingly prominent, and its complex coupling mechanism has a profound impact on the stability and ...
Cao Zhengzheng, Xie Mengqi, Rong Tao, Du Feng, Li Zhenhua, Wang Wenqiang   +5 more
doaj   +1 more source

Theory and method of suitable evaluation for mine environmental positive effects development and utilization

Meitan xuebao
Since the economic reform and opening up, the exploitation of mineral resources has made significant contributions to the economic development of China.
Qiang WU, Shoucheng ZHANG, Honglei LIU, Yifan ZENG   +3 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

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, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

An improved approach for rainfall-runoff simulation under anthropogenic influence

Frontiers in Physics
Human activities significantly influence the rainfall-runoff process, leading to pronounced fluctuations in runoff data and presenting substantial challenges for accurate simulation.
Sheng He, Heting Chen, Dun Fu, Shuxin Han, Zhengzheng Chen   +4 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Water quality characteristics and reutilization of goaf water from shallow coal seams within the Datong mining area, Shanxi Province, China

Meitian dizhi yu kantan
ObjectiveThe Datong mining area in Shanxi Province of China faces serious threats from goaf water hazards, while the goaf water drainage is constrained by environmental protection policies.
Jun LI, Herong GUI, Pengfei DING, Yongqing CHEN, Heyong WAN, Weiqi LI, Dawei HUANG, Weihua PENG, Yang HU, Yan GUO   +9 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Exploration Disaster Source of Mine Water by Electromagnetic Radiation

Elektronika ir Elektrotechnika, 2020
geological hazard in deep underground mining. Before the rock mass explosion, electromagnetic energy will radiate outward during the deformation and rupture of the coal rocks.
Benyu Su, Zhixiong Li, Rongyao Li, Rongfu Rao, Jingcun Yu   +4 more
doaj   +1 more source