Results 11 to 20 of about 11,739,453 (240)

Virginia Water Central [PDF]

open access: yes, 2014
This newsletter features articles on water-related science, policy, and law. Distributed to state agency representatives, faculty, students and interested citizens, it aims to provide current information, statistics, news, and notices related to water ...
Virginia Water Resources Research Center
core   +29 more sources

Study on the Damage Mechanism of Sandstone under Different Water Content States

open access: yesRemote Sensing, 2023
Understanding the failure mechanisms of rocks that are exposed to different water contents is important for rock stability in rock engineering applications, and the quantitative analysis of rock behavior is necessary for predicting and preventing the ...
Hongjian Wang   +5 more
doaj   +1 more source

Influence of Water Content and Mixing Conditions on the Properties of Lime-Based Materials

open access: yesBuildings, 2023
This paper evaluates the influence of water content and mixing conditions (mixing time and sequence of addition of the constituents) on the fresh state properties of lime-based materials and their impact on the hardened state properties.
Bruna A. Silva   +3 more
doaj   +1 more source

Study of Physical and Mechanical Properties of Centrifuged Concrete

open access: yesНаука и техника, 2019
The paper presents a complex of laboratory and theoretical studies of physical and mechanical properties in centrifuged concrete while using samples of sectoral cross-section which are cut in layers from a finished product. A post made of concrete having
I. I. Palevoda   +3 more
doaj   +1 more source

Simulation of the Dynamic Characteristics of a PEMFC System in Fluctuating Operating Conditions

open access: yesEnergies, 2020
A greater understanding of the dynamic processes inside the stack is urgently needed to optimize the PEMFC (proton exchange membrane fuel cell). In this study, we examined the gas, water and electrochemical processes inside the stack, studied the ...
Jiangyan Yan   +5 more
doaj   +1 more source

A quantitative description method for the mechanical behavior of soil-rock mixture as affected by water content

open access: yesFrontiers in Ecology and Evolution, 2023
The mechanical properties of soil rock mixture (S-RM) are complex, especially the strength deterioration after encountering water, which readily leads to engineering instability.
Yuxiang Du   +12 more
doaj   +1 more source

Sensor-Based Detection of the Severity of Hyperkeratosis in the Teats of Dairy Cows

open access: yesSensors, 2018
The aim of this study was to evaluate whether the severity of hyperkeratosis (HK) in the teats of dairy cows can be assessed by a dielectric measurement. The study focused on surveying the occurrence of hyperkeratosis in a total of 241 teats of lactating
Susanne Demba   +3 more
doaj   +1 more source

Influence of Fuel Type and Water Content Variation on Pollutant Emission Characteristics of a Biomass Circulating Fluidized Bed Boiler

open access: yesEnergies, 2021
In general, the biomass raw materials burned by biomass power plants generally have the characteristics of variable fuel types, high moisture content, and high volatile content.
Jianjie He   +4 more
doaj   +1 more source

DIGITALISATION AS A MARKETING MANAGEMENT TOOL IN THE TOURISM INDUSTRY

open access: yesBaltic Journal of Economic Studies
This article explores the concept of digitalisation and its impact on marketing management in the tourism industry. The study examines the evolution of digitalisation from its origins in the 1960s and 1970s to its current role in the economy, with a ...
Yuriy Safonov   +2 more
doaj   +1 more source

On the Cycle Stability and Macroscopic Structure of Iron Oxide Pellets for Thermochemical Hydrogen Storage: Influence of Water Content during the Pelletizing Process

open access: yesApplied Sciences, 2023
Hydrogen storage based on the repeated reduction and oxidation (redox) reactions of iron oxide/iron composites represents a promising technology. This work is dedicated to studying the influence of the amount of water added during the pelletizing process
Lea Huber   +4 more
doaj   +1 more source

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