Results 61 to 70 of about 166,057,245 (307)

Studies about the heat of hydration developed in mortars with natural and by-product materials

open access: yesMateriales de Construccion, 2000
The heat of hydration developed in reactions of mortars and concretes can be sensibly reduced using pozzolanic materials. However, the decrease of the heat of hydration is not directly proportional to the amount of cement substituted, because of the heat
M. I. Sánchez de Rojas   +2 more
doaj   +1 more source

Regulated Ion‐Diffusion Hydrogels for Subtle and Multimodal Temperature‐Strain Sensing in Wound Monitoring

open access: yesAdvanced Functional Materials, EarlyView.
A soft, dual‐channel hydrogel patch enables simultaneous detection of wound temperature and strain by integrating ion‐diffusion‐mediated thermoelectric and resistive sensing. The conformal design maintains stable performance during motion, capturing subtle inflammatory and mechanical changes for continuous wound monitoring.
Yu Fang   +7 more
wiley   +1 more source

Heat transfer in flat-plate boundary layers: a correlation for laminar, transitional, and turbulent flow

open access: yes, 2020
The laminar and turbulent regimes of a boundary layer on a flat plate are often represented with separate correlations under the assumption of a distinct “transition Reynolds number.” Average heat coefficients are then calculated by integrating across ...
Lienhard, John H, Lienhard, John H.
core   +1 more source

Fully Additive Vertical Organic Electrochemical Transistors on Renewable and Compostable Substrates Enable Ultrasensitive Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Fully additive vertical organic electrochemical transistors (vOECTs) with channel‐length of 226 nm on a 50 µm compostable substrate achieve >106 current modulation and ∼36 mS transconductance. Ion‐selective integration enables 1.1 mA dec−1 sensitivity and 36 µm detection limit, highlighting a scalable platform for sustainable electronics and ...
Giulia Frusconi   +3 more
wiley   +1 more source

The influence of return bends on the downstream pressure drop and condensation heat transfer in tubes [PDF]

open access: yes, 1971
The influence of return bends on the downstream pressure drop and heat transfer coefficient of condensing refrigerant R-12 was studied experimentally. Flow patterns in glass return bends of 1/2 to 1 in. radius and 0.315 in. I. D.
Traviss, Donald P., Rohsenow, Warren M.
core  

Early-age Performance of Cement Combination Concrete

open access: yesCivil Engineering Dimension, 2017
Heat of hydration up to 72 hours and compressive strength up to 7 days of Portland cement and 17 binary and ternary cements containing fly ash, silica fume, and metakaolin, at a water/cement ratio of 0.50 and addition contents of 20%, 35%, and 55%, were ...
Samuel Olufemi Folagbade
doaj   +3 more sources

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Effect of silica fume additions on the hydration behaviour of calcium aluminates [PDF]

open access: yes, 1997
In the recent refractory castables technology, the calcium aluminate cement is being replaced in increasing proportion by very fine matrix components, such as silica fume and colloidal alumina.
Fumo, Daniel A., Segadães, Ana M.
core  

Heat strain and hydration status of surface mine blast crew\ud workers

open access: yes, 2014
Objective\ud \ud Dehydration and symptoms of heat illness are common among the surface mining workforce. This investigation aimed to determine whether heat strain and hydration status exceeded recommended limits.\ud \ud Methods\ud \ud Fifteen blast crew ...
Hunt, Andrew P.   +2 more
core   +1 more source

Influence of Glass Powder on Hydration Kinetics of Composite Cementitious Materials

open access: yesAdvances in Materials Science and Engineering, 2015
The influence of glass powder (GP) on hydration kinetics of composite cementitious materials has been investigated by isothermal calorimetry test and hydration kinetics methods in this paper.
Xiaolin Chang   +4 more
doaj   +1 more source

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