Energy & Green Tech
A Northwestern University-led team of researchers has developed a new fuel cell that harvests energy from microbes living in dirt.
Jan 15, 2024
0
45
Robotics
Small mobile robots carrying sensors could perform tasks like catching gas leaks or tracking warehouse inventory. But moving robots demands a lot of energy, and batteries, the typical power source, limit lifetime and raise ...
Sep 27, 2023
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182
Internet
Rural and remote communities in Canada often rely on satellites to access the internet, but those connections are fraught—with many glitches and service interruptions because the technology can be unreliable. The inequity ...
Sep 20, 2023
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1
Energy & Green Tech
Researchers from North Carolina State University have developed a wireless system that uses radio transmitters and receivers to estimate soil moisture in agricultural fields at multiple depths in real time, improving on existing ...
Aug 17, 2022
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39
Engineering
Water is the most essential resource for life, for both humans and the crops we consume. Around the world, agriculture accounts for 70% of all freshwater use.
Aug 12, 2022
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6
Business
Wide-ranging use of smart technologies is raising global agricultural production but international researchers warn this digital-age phenomenon could reap a crop of another kind—cybersecurity attacks.
May 23, 2022
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35
Energy & Green Tech
Installing solar panels along a part of Saudi Arabia's west coast could generate enough rainwater to meet the annual consumption needs of five million people. An international team developed a weather forecasting model and ...
Apr 13, 2022
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50
Energy & Green Tech
Researchers at UniSA have developed a cost-effective new technique to monitor soil moisture using a standard digital camera and machine learning technology.
Mar 15, 2021
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157
Engineering
A team of University of Connecticut researchers engineered a soil moisture sensor that is more cost effective than anything currently available and responds to the global need to regulate water consumption in agriculture.
Sep 26, 2019
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13
Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, or wood on a volumetric or gravimetric basis. The property is used in a wide range of scientific and technical areas, and is expressed as a ratio, which can range from 0 (completely dry) to the value of the materials' porosity at saturation.
Volumetric water content, θ, is defined mathematically as:
where Vw is the volume of water and VT = Vs + Vv = Vs + Vw + Va is the total volume (that is Soil Volume + Water Volume + Void Space). Water content may also be based on its mass or weight, thus the gravimetric water content is defined as:
where mw is the mass of water and mb (or ms for soil) is the bulk material mass. To convert gravimetric water content to volumetric water, multiply the gravimetric water content by the bulk specific gravity of the material.
This text uses material from Wikipedia, licensed under CC BY-SA
