Search for food

Aerobic Treatment. The activated sludge process depends on aerobic biological action. In this case the microorganisms, in searching for food, break down the complex organic substances into simple stable substances. This process results in the removal of soluble and suspended organic matter from wastewater. 

Imagine a flock of starlings searching for food, which lies in a small area of the local countryside. None of the birds knows in advance where the food is located, so each of them will search for food independently, but will not move so far from the rest of the flock that they lose touch with it. By acting... 

For many predators and their prey, the roles in eavesdropping are reversed. Prowling predators frequently take advantage of their prey s chemical signals as they search for food. These signals... 

Krivan, V. and Sirot, E. (1997). Searching for food or hosts. The influence of parasitoids behavior on host-parasitoid dynamics. Theoretical Population Biology 51 ... 

Most petrels and shearwaters nest on isolated islands in the southern oceans, some as far south as Antarctica. Several species, however, breed in Hawaii, the northwestern United States (including Alaska), Maine, and Canada. These birds frequently range far from their birthplace, covering thousands of miles in an endless search for food. The greater shearwater, for example, nests on the Tristan da Cunha islands in the South Atlantic Ocean but may be found in the North Atlantic from Florida to Newfoundland during the northern summer. Other species may spend months circumnavigating the Pacific. 

Human cultures have always experimented with plant extracts in their search for food and medicines. The Ancient Egyptians left a record of their herbal knowledge in the form of a 1 by 68 foot scroll, discovered by Georg Ebers... 

The forms of cellular motion profoundly influence the ability of all organisms to grow, reproduce, and compete for limited resources. As examples, consider the movement of protists as they search for food in a pond or the migration of human white blood cells as they pursue foreign cells during an infection. More subtle examples include the movement of specific enzymes along a DNA molecule during the chromosome replication that precedes cell division and the secretion of insulin by certain pancreatic cells. 

The term f(P)Z in (3.71), when f P) is given by (3.74), leads formally to the Michaelis-Menten dynamics (3.39), if Et is identified with the predator density and P with the substrate. This analogy has been elaborated in the literature. For example Real (1977) describes predator-prey dynamics with the Michaelis-Menten scheme (3.27), with S the prey, C the intermediate state of the prey when it is eaten, E is the predator searching for food and P is the new predator biomass produced during the consumption process, so that Et = E + P is the total amount of predator. This leads to a justification... 

Related to our search for food additives with a long life is the obvious result that the additives of the future will probably have a lower obsolescence rate than those of former years, because of the time involved in gaining approval for a substitute. 

Reproduction, the search for food, and the social life in the hive require highly developed sensory organs and powerful communication processes. 

Initial training of all rats or mice to search for food at the end of the eight arms for 3 consecutive days until criteria of no more than two errors. 

Chemically, 1. a. are often alcohols or carboxylic acids and esters derived from alkenes or alkadienes but also terpenoid or heterocyclic compounds may have I. a. activity. In many cases the ratio of ciVfrani-isomers or, in the case of chiral compounds, the enantiomer ratio often plays a decisive role for the effectiveness of La. Many other substances occurring in the environment also have an attracting effect on insects, especially those associated with the search for food examples the typical odors of certain plants (e.g., arum), flower and fruit odors, emanations from animals and humans [CO2, lactic acid, (-)-(/ )-l-octen-3-ol] or carrion. 

It is observed that a swarm of birds or insects or a school of fish searches for food, protection, etc. in a very typical manner. If one of 4e members of the swarm sees a desirable path to go, the rest of... 

Dower, John W., and John Jukerman, eds. The Hiroshima Murals The Art of hi Maruki and Toshi Maruki. Tokyo Kodansha International, 1985. [Tbe Marukis arrived in Hiroshima a few days after the atomic bomb was dropped, tending the injured, building shelters, searching for food, and cremating the dead.]... 

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