Results 31 to 40 of about 1,118,595 (265)

High Strain Rate Response of Sandstones with Different Porosity under Dynamic Loading Using Split Hopkinson Pressure Bar (SHPB)

Applied Sciences
This article presents the results of dynamic tests of sandstone samples differing in strength parameters and porosity, which were carried out with the use of the split Hopkinson pressure bar (SHPB).
Grzegorz Stopka, Roman Gieleta, Robert Panowicz, Daniel Wałach, Grzegorz Piotr Kaczmarczyk   +4 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Dynamic Mechanical Properties of Heat-Treated Shale under Different Temperatures

Applied Sciences, 2023
As a typical rock, shale’s reservoir depth is about 1500–4000 m, and the temperature of the shale reservoir at this depth is 150 °C. Therefore, in order to study the dynamic strength of shale at this temperature, it is necessary to consider the effects ...
Weiliang Gao, Guoqiang Deng, Guijuan Sun, Yongjun Deng, Yin Li   +4 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Strain Rate Dependence of PLC Effect in AlMg4.5 Alloys

Engineering Proceedings
Tensile tests of AlMg4.5 alloy were carried out at six strain rates to study the Portevin–Le Chatelier (PLC) effect. The measured engineering stress–time and engineering stress–engineering strain curves were evaluated by direct peak detection and ...
Imre Czinege, Dóra Harangozó
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Influence of specimen size and formation genesis on the dynamic mechanical behavior of rock types using SHPB

Scientific Reports
This study presents a comprehensive investigation into the dynamic compressive behavior of ten distinct rock types using a Split Hopkinson Pressure Bar system.
Sunita Mishra, Tanusree Chakraborty
doaj   +1 more source

Dynamic strength differential and Bauschinger effects in an extruded AZ80 magnesium alloy

Journal of Materials Research and Technology
Quasi-static and high-rate tension and compression properties of an extruded AZ80 Mg alloy rod were investigated at loading rates of 0.001 and 500 s−1.
Zijian Fang, Tao Guo, Yang Wang, Ziran Li   +3 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Size effect of nickel-based single crystal superalloy revealed by nanoindentation with low strain rates

Journal of Materials Research and Technology
Size effect of the nickel-based single crystal superalloy DD6 is investigated in this study by performing nanoindentation experiments and finite element (FE) simulations by emphasizing the strain rate effect.
Xu Long, Ziyi Shen, Jiao Li, Ruipeng Dong, Ming Liu, Yutai Su, Chuantong Chen   +6 more
doaj   +1 more source