Results 21 to 30 of about 142,005 (262)

Experimental Study on Thermal Expansion Behavior of Concrete under Three-Dimensional Stress

open access: yesAdvances in Civil Engineering, 2021
Concrete is widely used in underground engineering and bears three-dimensional stress transmitted by overlying load. When a fire occurs, the thermal expansion of concrete structure under such stress state is different from that under stress-free state ...
Zhipeng Yu   +5 more
doaj   +1 more source

Negative thermal expansion materials † [PDF]

open access: yesJournal of the Chemical Society, Dalton Transactions, 1999
The ZrW2O8 family of materials has been shown to exhibit the unusual property of negative thermal expansion over a wide temperature range. α-ZrW2O8 itself shows negative thermal expansion from 2 K to 1443 K with a coefficient of thermal expansion α1 of -9.1×10-6 K-1 between 2 and 300 K. This behaviour can be related to the unusual structure of these
openaire   +1 more source

Enhanced thermal and mechanical properties of Sr0.2Ba0.8TiO3/Cu composites by introducing Cu2O interface coating

open access: yesMaterials & Design, 2019
Ferroelectric ceramic with negative thermal expansion during the phase transformation from T-phase to C-phase can be used as reinforcement to obtain low thermal expansion metal matrix composites.
Yuxuan Wang   +7 more
doaj   +1 more source

Effects of chirality and stacking on the thermal expansion effects of graphene

open access: yesMaterials Research Express, 2020
Graphene has huge application potential in the field of micro-nano devices, and due to the micro/nano-level application size, the thermal expansion coefficient of graphene has a certain impact on device performance.
Ning Yang, Cheng Li, Yong Tang
doaj   +1 more source

Nova metodologia para aferição da temperatura final de hastes metálicas em um experimento de dilatação térmica linear

open access: yesRevista Brasileira de Ensino de Física
Para realizar o estudo da expansão térmica em diversos materiais é necessário conhecer o seu coeficiente de dilatação linear, mas em alguns casos é difícil medir a temperatura final do corpo em estudo.
Bruno Gonçalves   +4 more
doaj   +1 more source

Comparison of properties and thermal modification of thermal expansion silicone rubber

open access: yesCailiao gongcheng, 2023
In order to obtain thermal expansion silicone rubber for composite soft molding with excellent performance and wide adaptability, the flow, heat resistance, thermal expansion and elastic properties of three kinds of thermal expansion silicone rubber were
MA Tengfei   +4 more
doaj   +1 more source

Linear thermal expansion behavior of compacted bentonite buffer materials

open access: yesCase Studies in Thermal Engineering, 2022
In a geological repository system, buffer is indispensable to ensure the safe disposal of high-level radioactive waste (HLW). Because heat generated from spent nuclear fuel in a canister is released to the surrounding buffers, thermal properties of such ...
Seok Yoon, Gi-Jun Lee, Gyu-Hyun Go
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Coal Permeability Variation during the Heating Process considering Thermal Expansion and Desorption Shrinkage

open access: yesAdsorption Science & Technology, 2022
In order to explore the influence of coal deformation caused by temperature and desorption on seepage characteristics in the process of heat injection mining of coalbed methane, the permeability test, thermal expansion, and constant temperature ...
Xiaoyu Su   +3 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

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