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Cold water extraction (also called CWE) is the process whereby a substance is extracted from a mixture via cold water. It is a type of fractional crystallization . The process generally involves taking a mixture of substances, dissolving them in warm water, and then rapidly cooling the mixture.
Modified atmosphere/modified humidity (MA/MH) packaging is a technology used to preserve the quality of fresh produce so that it can be sold to markets far away from where it is grown, extend the marketing period, and to help suppliers reduce food waste within the cold chain. Commercial examples of MA/MH include sea freight of Galia and ...
The 1959 Nile waters treaty between Egypt and Sudan allocates 55.5 billion cubic meter of water per year to Egypt, without specifying any allocation for upstream riparians besides Sudan (18.5 billion cubic meters per year). Actual water use by Egypt is widely believed to be in excess of the allocation under the 1959 agreement.
Water sachets or sachet water is a common form of selling pre-filtered or sanitized water in plastic, heat sealed bags in parts of the global south, and are especially popular in Africa. [1] Water sachets are cheaper to produce than plastic bottles, and easier to transport. [2] In some countries, water vendors refer to sachet water as "pure water".
Water extraction (also known as water withdrawal, water abstraction, and water intake) is the process of taking water from any source, either temporarily or permanently, for flood control or to obtain water for, for example, irrigation. [1] [2] The extracted water could also be used as drinking water after suitable treatment.
Self-heating rice with quicklime and water as heating source, taken before adding water to quicklime. The source of the heat for the self-heated can is an exothermic reaction that the user initiates by pressing on the bottom of the can. The can is manufactured as a triple-walled container.
There is evidence that evaporative cooling may have been used in North Africa as early as the Old Kingdom of Egypt, circa 2500 BC. Frescoes show slaves fanning water jars, which would increase air flow around porous jars to aid evaporation and cooling the contents. [3] These jars exist even today. They are called zeer, hence the name of the pot ...
The Nile river is the only water source for most of Egypt, including its capital Cairo shown here. Egypt's main source of freshwater is the Nile River. The river supplies 55 billion m 3 of freshwater every year, which represents 97% of all renewable water resources in Egypt. [5] Overall, the Nile River constitutes about 90% Egypt's water supply.