Water Content
Water Content - Related Videos
01:19
Body Water Content and Fluid Compartments
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2024
Life's biochemical processes occur within aqueous solutions. Solutes are substances that are dissolved within these solutions. The human body contains a variety of solutes, which can differ across various body parts. These can encompass proteins—such as those responsible for clotting and carbohydrate transport—as well as electrolytes. In medicine, an electrolyte is often described as a mineral ion derived from a salt possessing an electric charge. Examples include sodium ions (Na+) and chloride...
08:31
The Calibration and Use of Capacitance Sensors to Monitor Stem Water Content in Trees
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Cited by 31 •
2017
The hydraulic capacitance of biomass is a key component of the vegetation water budget, which serves as a buffer against short and long-term drought stresses. Here, we present a protocol for the calibration and use of soil moisture capacitance sensors to monitor water content in the stems of large trees.
08:25
BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams
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Cited by 2 •
2019
We present a simple and cost-effective method to build an open-source datalogger that measures the conductance of nonvascular cryptogams together with the environmental temperature and humidity. We describe the hardware design of the datalogger and provide step-by-step assembly instructions, the list of required open-source logging software, the code to run the datalogger, and a calibration protocol.
08:49
Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors
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Cited by 6 •
2019
Accurately measuring temperature and water content of the upper 5 mm of the soil surface can improve our understanding of environmental controls on biological, chemical, and physical processes. Here we describe a protocol for manufacturing, calibrating, and conducting measurements with soil surface temperature and moisture sensors.
15:04
A Neuronal and Astrocyte Co-Culture Assay for High Content Analysis of Neurotoxicity
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Cited by 46 •
2009
This article describes a novel protocol and reagent set designed for sensitive measurement of neurotoxic effects of compounds and treatments on co-cultures of neurons and astrocytes using high content analysis. Results demonstrate that high content analysis represents an exciting novel technology for neurotoxicity assessment.
FAQs
A change in water content can alter cell volume and the concentration of dissolved substances. Because water provides the medium for biochemical reactions and molecular transport, shifts in its amount may influence how substances move and how reactions proceed. These effects make water content a useful indicator when evaluating physiological condition or responses to environmental stress.
The amount of water affects how concentrated dissolved substances become within a biological sample. If water content changes while the amount of dissolved material remains comparable, the surrounding solution can become more or less concentrated. This relationship helps explain why water loss or gain may influence cellular conditions, transport processes, and biochemical activity.
The comparison uses the sample’s mass before and after its water has been removed. The difference between wet mass and dry mass represents the water associated with the sample, while the dry measurement provides a reference for the remaining material. This approach converts a change in mass into a practical estimate of water content for biological analysis.
Mass comparison provides a direct sample-level estimate, whereas imaging and chemical analysis offer alternative ways to examine water-related properties. Imaging can support assessment of spatial or structural patterns, while chemical analysis can provide information about sample composition. Selecting among these approaches depends on whether the investigation emphasizes overall amount, distribution, or associated chemical changes.
In plant biology, water content measurements help indicate the plant’s water status and show how tissues respond to changes in their environment. Comparing samples can reveal differences associated with water availability or environmental stress. These observations support studies of plant condition without relying only on visible symptoms, linking tissue measurements to physiological assessment.
Disease-related changes may alter the amount or distribution of water within a tissue, making water content a measurable indicator of altered condition. Researchers can compare measurements among samples to identify differences associated with disease. When combined with imaging or chemical analysis, the results may help relate water changes to broader changes in tissue composition or physiology.