Results 71 to 80 of about 43,867 (313)

Intrusion and extrusion of water in hydrophobic nanopores [PDF]

open access: yes, 2017
Heterogeneous systems composed of hydrophobic nanoporous materials and water are capable, depending on their characteristics, of efficiently dissipating (dampers) or storing ("molecular springs") energy.
Casciola, Carlo Massimo   +3 more
core   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani   +2 more
wiley   +1 more source

Study on the effects of drying–wetting cycles on the dynamic elasticity modulus of weathered red sandstone soil

open access: yesSN Applied Sciences, 2023
In this paper, the effect of drying–wetting cycles on the dynamic elasticity modulus of weathered red sandstone soil was studied based on a series of unconsolidated undrained dynamic triaxial tests under different confining pressures and with the help of
Yunye Deng
doaj   +1 more source

Improving a pavement-watering method on the basis of pavement surface temperature measurements [PDF]

open access: yes, 2014
Pavement-watering has been studied since the 1990's and is currently considered a promising tool for urban heat island reduction and climate change adaptation.
Colombert, Morgane   +3 more
core   +4 more sources

Dry/Wet Cycling and the Thermodynamics and Kinetics of Prebiotic Polymer Synthesis [PDF]

open access: yesLife, 2016
The endoergic nature of protein and nucleic acid assembly in aqueous media presents two questions that are fundamental to the understanding of life’s origins: (i) how did the polymers arise in an aqueous prebiotic world; and (ii) once formed in some manner, how were they sufficiently persistent to engage in further chemistry.
David S. Ross, David Deamer
openaire   +3 more sources

Shear Wave Velocity Response of Compacted Kaolin during Drying-Wetting Cycles

open access: yesE3S Web of Conferences, 2023
Previous studies indicate that that post-compacted changes in moisture and suction significantly influence small strain response, often this is not routinely monitored during operation. Thus, assessing the impacts of seasonal variation on performance is critical for gauging the geomechanical behaviour of compacted soils underlying typical transport ...
Walker Christopher   +2 more
openaire   +2 more sources

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann   +3 more
wiley   +1 more source

Deterioration mechanism of mechanical properties and microstructure in xanthan gum-reinforced soil under wetting-drying cycles based on CT scanning technology

open access: yesYantu gongcheng xuebao
The wetting-drying cycle has an important effect on the engineering properties of rock and soil. The CT scanning technology and testing methods for mechanical properties are used to study the deterioration mechanism of clay reinforced with xanthan gum ...
LIU Jin 1, CHE Wenyue 1, HAO Shefeng 2, MA Xiaofan 1, YU Yongxiang 2, WANG Ying 1, CHEN Zhihao 1, LI Wanwan 1, QIAN Wei 1
doaj   +1 more source

Theory of Sorption Hysteresis in Nanoporous Solids: II. Molecular condensation

open access: yes, 2011
Motivated by the puzzle of sorption hysteresis in Portland cement concrete or cement paste, we develop in Part II of this study a general theory of vapor sorption and desorption from nanoporous solids, which attributes hysteresis to hindered molecular ...
Bazant, Martin Z., Bazant, Zdenek P.
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

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