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Pepper is sprinkled onto the surface of the water in the left dish; when a droplet of soap is added to that water, the specks of pepper move rapidly outwards. The Marangoni effect (also called the Gibbs–Marangoni effect ) is the mass transfer along an interface between two phases due to a gradient of the surface tension .
Persicaria hydropiper (syn. Polygonum hydropiper), also known as water pepper, marshpepper knotweed, arse smart [2] or tade, is a plant of the family Polygonaceae. A widespread species, Persicaria hydropiper is found in Australia, New Zealand, temperate Asia, Europe and North America.
Persicaria minor is an edible, aromatic herb. In Malaysia and Indonesia it has the common name "kesum", and its shoots and young leaves are eaten raw as part of salad (); used as an aroma spice additive in peppery dishes such as laksa, nasi kerabu, asam pedas and tom yam; used as tea leaves; and used for topical applications in traditional medicine.
A bioassay is a biochemical test to estimate the potency of a sample compound. Usually this potency can only be measured relative to a standard compound. [3] [1] A typical bioassay involves a stimulus (ex. drugs) applied to a subject (ex. animals, tissues, plants). The corresponding response (ex. death) of the subject is thereby triggered and ...
The UPLB Limnological Research Station. The UPLB Limnological Research Station traces its root from the Department of Entomology, of the then UP College of Agriculture.Since its conception, the station contributed immensely to the understanding of the bounties of Laguna de Bay and helped establish the duck farming industry on Los Baňos foreshores and pioneered in aquarium fish production in ...
A handmade soap bar Two equivalent images of the chemical structure of sodium stearate, a typical ingredient found in bar soaps Emulsifying action of soap on oil. Soap is a salt of a fatty acid (sometimes other carboxylic acids) used for cleaning and lubricating products as well as other applications. [1]
In situations with limited water supply (such as schools or rural areas in developing countries), there are water-conserving solutions, such as "tippy-taps" and other low-cost options. [60] A tippy-tap is a simple technology using a jug suspended by a rope, and a foot-operated lever to pour a small amount of water over the hands and a bar of soap.
Water memory is the purported ability of water to retain a memory of substances previously dissolved in it even after an arbitrary number of serial dilutions.It has been claimed to be a mechanism by which homeopathic remedies work, even when they are diluted to the point that no molecule of the original substance remains, but there is no theory for it.