Results 91 to 100 of about 2,032,204 (309)

Influence of axial load on internal pressure creep of Mod.9Cr-1Mo circumferential welded pipe

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Mod.9Cr-1Mo steel(P91) is widely used for high temperature pipes in ultra-super-critical thermal power plants. However it was recently reported that the creep damage was detected at heat affected zone(HAZ) in welded joints of the pipes so-called the ...
Takashi OGATA   +2 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Experimental Investigation on the Frost Resistance and Service Life Prediction of Basalt Fiber-Reinforced Concrete

open access: yesFibers
To evaluate the frost resistance of basalt fiber-reinforced concrete (BFRC) and predict its service life, this study conducted 225 quick freeze–thaw (F-T) cycle tests. Specifically, it systematically investigated how basalt fiber (BF) volume content (0.1%
Chuan Zhao   +7 more
doaj   +1 more source

Research on Accelerated Degradation Test Design and Life Prediction for Aluminum Electrolytic Capacitor

open access: yesKongzhi Yu Xinxi Jishu, 2022
As a life sensitive device, aluminum electrolytic capacitor degrades its parameters to a certain extent with the passage of time, which will inevitably affect the life of electronic board, so it is very important to study its degradation law and life ...
YANG Tao, WANG Xu, XIAO Jianglin
doaj  

Creep strength of Mod.9Cr1Mo steel under biaxial stress states

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper describes the development of tension, torsion, and combined tension-torsion creep testing machine with hydro static thrust bearing, criterion on creep rupture strength under biaxial stress states was examined.
Naomi HAMADA   +2 more
doaj   +1 more source

Quality of Life in Depression: Predictive Models

open access: yesQuality of Life Research, 2006
The purpose of this study was to examine the predictive factors of quality of life for inpatients with depressive disorders. Eighty-three patients (mean age 44; 73% female) with depressive disorders were recruited from the psychosomatic ward of a medical center in the northern part of Taiwan.
Pan, Ay-Woan   +4 more
openaire   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Research on fatigue failure mechanism and life prediction method of FGH96 flat plate with a hole

open access: yesJournal of Aeronautical Materials
Fatigue tests were conducted on FGH96 flat plates containing a hole at 600 ℃. Utilizing a viscoplastic constitutive model,the stress and plastic strain distributions within these plates were meticulously calculated.
DONG Chengli   +4 more
doaj   +1 more source

Thermal Fatigue Life Prediction of Thermal Barrier Coat on Nozzle Guide Vane via Master–Slave Model

open access: yesApplied Sciences, 2019
The aim of this paper was to develop a master−slave model with fluid-thermo-structure (FTS) interaction for the thermal fatigue life prediction of a thermal barrier coat (TBC) in a nozzle guide vane (NGV).
Peng Guan   +3 more
doaj   +1 more source

Stress analysis and fatigue life prediction of a wobble-plate [PDF]

open access: yes, 2006
A five-stage compressor for compressing natural gas is being designed and evaluated. The compressor operates at 1500 rpm with natural gas pressure of 50 psi.
Osman Ali, Hassan
core  

Home - About - Disclaimer - Privacy