nutrient

Some examples of earlier attempts in hydroponics are the Hanging Gardens of Babylon around 600 BC and the Floating Gardens of the Aztecs (chinampas) during the 11th century. In 1929, Professor Gericke of the University of California, Davis demonstrated that plants could be grown soil-free all the way to maturity, growing tomato plants in water to a quite remarkable size. By analogy with the ancient Greek term for agriculture, geoponics, the science of cultivating the earth, Gericke coined the name hydroponics for the culture of plants in water (from the Greek hydros ...

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Hydroponics, Hydroponics - Uses, Hydroponics - History, Hydroponics - Techniques, Hydroponics - Passive hydroponics, Hydroponics - Flood and Drain or Ebb and Flow, Hydroponics - Deep Water Culture DWC, Hydroponics - Drip feeding, Hydroponics - Wick feeding, Hydroponics - Raft cultivation, Hydroponics - Nutrient film technique NFT, Hydroponics - Aeroponics, Hydroponics - Media, Hydroponics - Expanded Clay, Hydroponics - Rockwool, Hydroponics - Coco Coir, Hydroponics - Perlite, Hydroponics - Vermiculite, Hydroponics - Oasis Root Cubes, Hydroponics - Nutrient Solutions, Hydroponics - Commercial, Hydroponics - Problems with hydroponics, Hydroponics - Present and future

Read more here: » Hydroponics: Encyclopedia II - Hydroponics - History

Because of their wood-eating habits, termites sometimes do great damage to buildings and other wooden structures. Their habit of remaining concealed often results in their presence being undetected until the timbers are severely damaged and exhibit surface changes. Once termites have entered a building they do not limit themselves just to wood, also damaging paper, cloth, carpets, and other cellulosic materials. ...

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Termite, Termite - Appearance and Morphology, Termite - Social Structure and Behaviour, Termite - Queen and King, Termite - Workers, Termite - Soldiers, Termite - Hiding, Termite - Diet, Termite - Mounds, Termite - Human interaction, Termite - Fighting termites, Termite - Ecology, Termite - Relationships and Evolutionary History

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The benefits of breastfeeding are both physical and psychological for both mother and child. Nutrients and antibodies are passed to the baby while hormones are released into the mother's system. The bond between baby and mother can also be strengthened during breastfeeding. Breastfeeding - Benefits for the infant. Breastmilk, when fed directly from the breast, is immediately availabl ...

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Breastfeeding, Breastfeeding - Beginning lactation, Breastfeeding - The let-down reflex, Breastfeeding - Benefits, Breastfeeding - Benefits for the infant, Breastfeeding - Benefits for the mother, Breastfeeding - Bonding, Breastfeeding - Recommendations and research, Breastfeeding - Difficulties with breastfeeding, Breastfeeding - Breast refusal, Breastfeeding - Medical conditions of the infant, Breastfeeding - Medical conditions of the mother, Breastfeeding - When breastfeeding can be harmful to the infant, Breastfeeding - Health and diet, Breastfeeding - Feeding options and requirements, Breastfeeding - Expression, Breastfeeding - Infant formula, Breastfeeding - Tandem extended and shared breastfeeding, Breastfeeding - Breastfeeding method, Breastfeeding - Feeding and positioning, Breastfeeding - Breast and nipple pain, Breastfeeding - Weaning, Breastfeeding - History of breastfeeding, Breastfeeding - Developing alternatives, Breastfeeding - Breastfeeding in Japan, Breastfeeding - Breastfeeding in Canada, Breastfeeding - Breastfeeding in Cuba, Breastfeeding - Publicity promotion and law, Breastfeeding - Recent global uptake, Breastfeeding - Lactation without pregnancy

Read more here: » Breastfeeding: Encyclopedia II - Breastfeeding - Benefits

Because lichens are morphologically small relative to most terrestrial plants, yet require access to sunlight in order to grow, most forms are attached to either large boulders, other inert surfaces, or woody plants in somewhat to completely open or exposed situations. However, where adequate moisture exists, lichens develop on surfaces (particularly those of slow-growing trees) in forests as part of an epiphyte community. Stability (that is, longevity) of a surface is a commonality of most lichen habitats. Lichens are relatively slow-growin ...

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Lichen, Lichen - Morphology and structure, Lichen - Reproduction, Lichen - Ecology, Lichen - Classification

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Lichens most frequently reproduce asexually, either by vegetative reproduction or through the dispersal of diaspores containing algal and fungal cells. Soredia (sing. soredium) are small groups of algal cells surrounded by fungal filaments that form in cavities called soralia, which open when the lichen dries or surrounding tissues die and release the soredia to be dispersed by wind. Another form of diaspore are isidia, elongated outgrowths from the thallus that break off for dispersal. Fruticose lichens in particular can easily fragm ...

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Lichen, Lichen - Morphology and structure, Lichen - Reproduction, Lichen - Ecology, Lichen - Classification

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It is not uncommon for a mother and child to have difficulties breastfeeding in the beginning, but most of these problems resolve in the early weeks. A small percentage (between 2 & 3%) of women are unable to provide a full day's calories. It is not known what causes insufficient milk supply, but extended separation at birth, insufficient glandular tissue, and Polycystic Ovary Syndrome (PCOS) are all known culprits. Even among this small group, it is feasible to continue breastfeeding while supplementing with donated breastmilk or ...

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Breastfeeding, Breastfeeding - Beginning lactation, Breastfeeding - The let-down reflex, Breastfeeding - Benefits, Breastfeeding - Benefits for the infant, Breastfeeding - Benefits for the mother, Breastfeeding - Bonding, Breastfeeding - Recommendations and research, Breastfeeding - Difficulties with breastfeeding, Breastfeeding - Breast refusal, Breastfeeding - Medical conditions of the infant, Breastfeeding - Medical conditions of the mother, Breastfeeding - When breastfeeding can be harmful to the infant, Breastfeeding - Health and diet, Breastfeeding - Feeding options and requirements, Breastfeeding - Expression, Breastfeeding - Infant formula, Breastfeeding - Tandem extended and shared breastfeeding, Breastfeeding - Breastfeeding method, Breastfeeding - Feeding and positioning, Breastfeeding - Breast and nipple pain, Breastfeeding - Weaning, Breastfeeding - History of breastfeeding, Breastfeeding - Developing alternatives, Breastfeeding - Breastfeeding in Japan, Breastfeeding - Breastfeeding in Canada, Breastfeeding - Breastfeeding in Cuba, Breastfeeding - Publicity promotion and law, Breastfeeding - Recent global uptake, Breastfeeding - Lactation without pregnancy

Read more here: » Breastfeeding: Encyclopedia II - Breastfeeding - Difficulties with breastfeeding

Foods that contain significant concentrations of oxalic acid include (in decreasing order): buckwheat, star fruit (carambola), black pepper, parsley, poppy seed, rhubarb, spinach, chard, beets, banana, cocoa, chocolate, most nuts, most berries, and beans. In the case of rhubarb the only edible portion is the stalk because the root and leaves contain dangerously high concetrations of oxalic acid. The gritty feel one gets in the mouth when drinking milk with rhubarb desserts is caused by precipitation of calcium oxalate. Thus even dilute amounts of oxalic acid can readily "crack" ...

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Oxalic acid, Oxalic acid - Biological hazards, Oxalic acid - Role as an organometallic, Oxalic acid - Food Science, Oxalic acid - Industrial and household applications, Oxalic acid - Other uses

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During the 1980s, the problems associated with crystallization were becoming better appreciated, but the publication of the book ENGINES OF CREATION by K. Eric Drexler in 1986 aroused a great deal of interest in the idea that nanotechnology would be able to repair freezing damage. Alcor and the American Cryonics Society shifted emphasis from whole body to "neuropreservation" ("neuro", head-only cryopreservation), on the assumption that the rest of the body could be regrown, perhaps by cloning of the person's DNA or reconstructed with nanotec ...

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Cryonics, Cryonics - Obstacles to success, Cryonics - Damage from ice formation and ischemia, Cryonics - Revival process, Cryonics - Financial issues, Cryonics - Head neuro vs. whole-body cryopreservation, Cryonics - History, Cryonics - Culture, Cryonics - Notes

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Benjamin Franklin suggested in a famous 1773 letter [3] that it might be possible to preserve human life in a suspended state for centuries. However the modern era of cryonics began in 1962 when Michigan college physics professor Robert Ettinger proposed in a privately published book, “The Prospect of Immortality”[4], that freezing people may be a way to reach future medical technology. Even though freezing a person is apparently fatal, Ettinger argued that what appears to be fatal today may be reversible in the future. He applied the sa ...

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Cryonics, Cryonics - Obstacles to success, Cryonics - Damage from ice formation and ischemia, Cryonics - Revival process, Cryonics - Financial issues, Cryonics - Head neuro vs. whole-body cryopreservation, Cryonics - History, Cryonics - Culture, Cryonics - Notes

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Cryonics is often seen in sci-fi as a means to transport a character from the past into the future. In addition to accomplishing whatever the character's primary task is in the future, he or she must cope with the strangeness of a new world, which tends to contain only humorous traces of their previous surroundings. The movie Demolition Man features two chartacters, a police officer and villain, who are frozen in the late 20th century. They are unfrozen forty years later where they must learn the strange ways in which the new world wo ...

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Cryonics, Cryonics - Obstacles to success, Cryonics - Damage from ice formation and ischemia, Cryonics - Revival process, Cryonics - Financial issues, Cryonics - Head neuro vs. whole-body cryopreservation, Cryonics - History, Cryonics - Culture, Cryonics - Notes

Read more here: » Cryonics: Encyclopedia II - Cryonics - Culture

Main article: Breast milk Throughout the last two trimesters of pregnancy a woman's body produces hormones which stimulate the growth of the milk duct system in the breasts: Progesterone -- influences the growth in size of alveoli and lobes. Progesterone levels drop along with estrogen levels after birth, triggering the onset of copious milk secretion. (Mohrbacher, IBCLC, Nancy; Stock, MA, IBCLC, Julie (2003). The Breastfeeding Answer Book, Third Revised Edition. La Leche League International, Inc. ISBN 0-912500-92 ...

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Breastfeeding, Breastfeeding - Beginning lactation, Breastfeeding - The let-down reflex, Breastfeeding - Benefits, Breastfeeding - Benefits for the infant, Breastfeeding - Benefits for the mother, Breastfeeding - Bonding, Breastfeeding - Recommendations and research, Breastfeeding - Difficulties with breastfeeding, Breastfeeding - Breast refusal, Breastfeeding - Medical conditions of the infant, Breastfeeding - Medical conditions of the mother, Breastfeeding - When breastfeeding can be harmful to the infant, Breastfeeding - Health and diet, Breastfeeding - Feeding options and requirements, Breastfeeding - Expression, Breastfeeding - Infant formula, Breastfeeding - Tandem extended and shared breastfeeding, Breastfeeding - Breastfeeding method, Breastfeeding - Feeding and positioning, Breastfeeding - Breast and nipple pain, Breastfeeding - Weaning, Breastfeeding - History of breastfeeding, Breastfeeding - Developing alternatives, Breastfeeding - Breastfeeding in Japan, Breastfeeding - Breastfeeding in Canada, Breastfeeding - Breastfeeding in Cuba, Breastfeeding - Publicity promotion and law, Breastfeeding - Recent global uptake, Breastfeeding - Lactation without pregnancy

Read more here: » Breastfeeding: Encyclopedia II - Breastfeeding - Beginning lactation

Exclusive breastfeeding means feeding a baby nothing but breast milk. Predominant or mixed breastfeeding means feeding breast milk along with some form of substitute – infant formula or baby food and even water, depending upon the age of the child. Babies feed differently with artificial teats than from a breast. When feeding from the breast, the tongue massages the milk out rather than sucking, and the nipple does not go as far into the mouth; when feeding from a bottle, an infant will suck harder. Therefore the advic ...

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Breastfeeding, Breastfeeding - Beginning lactation, Breastfeeding - The let-down reflex, Breastfeeding - Benefits, Breastfeeding - Benefits for the infant, Breastfeeding - Benefits for the mother, Breastfeeding - Bonding, Breastfeeding - Recommendations and research, Breastfeeding - Difficulties with breastfeeding, Breastfeeding - Breast refusal, Breastfeeding - Medical conditions of the infant, Breastfeeding - Medical conditions of the mother, Breastfeeding - When breastfeeding can be harmful to the infant, Breastfeeding - Health and diet, Breastfeeding - Feeding options and requirements, Breastfeeding - Expression, Breastfeeding - Infant formula, Breastfeeding - Tandem extended and shared breastfeeding, Breastfeeding - Breastfeeding method, Breastfeeding - Feeding and positioning, Breastfeeding - Breast and nipple pain, Breastfeeding - Weaning, Breastfeeding - History of breastfeeding, Breastfeeding - Developing alternatives, Breastfeeding - Breastfeeding in Japan, Breastfeeding - Breastfeeding in Canada, Breastfeeding - Breastfeeding in Cuba, Breastfeeding - Publicity promotion and law, Breastfeeding - Recent global uptake, Breastfeeding - Lactation without pregnancy

Read more here: » Breastfeeding: Encyclopedia II - Breastfeeding - Feeding options and requirements

One of the most obvious decisions a hydroponicist has to make is which medium they should use. Different media are appropriate for different growing techniques. Hydroponics - Expanded Clay. Also known as 'hydroton'(this is a trademarked name), these small round baked spheres of clay are inert and are extremely suitable for any hydroponic system where all the nutrients are carefully controlled in the water. Clay pebbles can be reused, provided they are cleaned thoroughly in-between crops. Baked clay pebbles are highly porous, yet irregularly shaped to create an ideal bal ...

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Hydroponics, Hydroponics - Uses, Hydroponics - History, Hydroponics - Techniques, Hydroponics - Passive hydroponics, Hydroponics - Flood and Drain or Ebb and Flow, Hydroponics - Deep Water CultureDWC, Hydroponics - Drip feeding, Hydroponics - Wick feeding, Hydroponics - Raft cultivation, Hydroponics - Nutrient film technique NFT, Hydroponics - Aeroponics, Hydroponics - Media, Hydroponics - Expanded Clay, Hydroponics - Rockwool, Hydroponics - Coco Coir, Hydroponics - Perlite, Hydroponics - Vermiculite, Hydroponics - Commercial, Hydroponics - Problems with hydroponics, Hydroponics - Present and future

Read more here: » Hydroponics: Encyclopedia II - Hydroponics - Media

The let-down reflex, also known as the milk ejection reflex, is caused by the release of the hormone, oxytocin. Oxytocin stimulates the muscles of the breast to squeeze out the milk. Breastfeeding mothers describe the sensation differently, with some feeling a slight tingling, some feeling immense ammounts of pressure and slight pain/discomfort, and still others not feeling anything different. The reflex is not always consistent, especially at first. The thought of nursing or the sound of any baby can stimulate the let-d ...

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Breastfeeding, Breastfeeding - Beginning lactation, Breastfeeding - The let-down reflex, Breastfeeding - Benefits, Breastfeeding - Benefits for the infant, Breastfeeding - Benefits for the mother, Breastfeeding - Bonding, Breastfeeding - Recommendations and research, Breastfeeding - Difficulties with breastfeeding, Breastfeeding - Breast refusal, Breastfeeding - Medical conditions of the infant, Breastfeeding - Medical conditions of the mother, Breastfeeding - When breastfeeding can be harmful to the infant, Breastfeeding - Health and diet, Breastfeeding - Feeding options and requirements, Breastfeeding - Expression, Breastfeeding - Infant formula, Breastfeeding - Tandem extended and shared breastfeeding, Breastfeeding - Breastfeeding method, Breastfeeding - Feeding and positioning, Breastfeeding - Breast and nipple pain, Breastfeeding - Weaning, Breastfeeding - History of breastfeeding, Breastfeeding - Developing alternatives, Breastfeeding - Breastfeeding in Japan, Breastfeeding - Breastfeeding in Canada, Breastfeeding - Breastfeeding in Cuba, Breastfeeding - Publicity promotion and law, Breastfeeding - Recent global uptake, Breastfeeding - Lactation without pregnancy

Read more here: » Breastfeeding: Encyclopedia II - Breastfeeding - The let-down reflex

Some examples of earlier attempts in hydroponics are the Hanging Gardens of Babylon around 600 BC and the Floating Gardens of the Aztecs during the 11th century. The first researcher of hydroponics was John Woodward of England, who, in 1699, grew plants in water to which he had added various soils. This demonstrated that the earth contained various substances which the plants needed besides water. In the mid-19th century, the German plant physiologists Sachs and Knop grew plants ...

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Hydroponics, Hydroponics - Uses, Hydroponics - History, Hydroponics - Techniques, Hydroponics - Passive hydroponics, Hydroponics - Flood and Drain or Ebb and Flow, Hydroponics - Deep Water CultureDWC, Hydroponics - Drip feeding, Hydroponics - Wick feeding, Hydroponics - Raft cultivation, Hydroponics - Nutrient film technique NFT, Hydroponics - Aeroponics, Hydroponics - Media, Hydroponics - Expanded Clay, Hydroponics - Rockwool, Hydroponics - Coco Coir, Hydroponics - Perlite, Hydroponics - Vermiculite, Hydroponics - Commercial, Hydroponics - Problems with hydroponics, Hydroponics - Present and future

Read more here: » Hydroponics: Encyclopedia II - Hydroponics - History

Hydroponics is useful to us in two main ways. First, it provides a more controlled environment for plant growth than soil thereby removing many unknowns from experiments. Second, many plant species produce more in less time and sometimes of higher quality, which under certain economic and environmental conditions, makes hydroponics growing more profitable to the farmer. With hydroponics there are no soil-borne diseases, weeds to pull, or soil to till, and plants can be placed very close to one another. This allows a large amount of food to b ...

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Hydroponics, Hydroponics - Uses, Hydroponics - History, Hydroponics - Techniques, Hydroponics - Passive hydroponics, Hydroponics - Flood and Drain or Ebb and Flow, Hydroponics - Deep Water CultureDWC, Hydroponics - Drip feeding, Hydroponics - Wick feeding, Hydroponics - Raft cultivation, Hydroponics - Nutrient film technique NFT, Hydroponics - Aeroponics, Hydroponics - Media, Hydroponics - Expanded Clay, Hydroponics - Rockwool, Hydroponics - Coco Coir, Hydroponics - Perlite, Hydroponics - Vermiculite, Hydroponics - Commercial, Hydroponics - Problems with hydroponics, Hydroponics - Present and future

Read more here: » Hydroponics: Encyclopedia II - Hydroponics - Uses

Due to rising awareness of chemicals and other contaminants in the food supply, people are looking for more wholesome and safer alternatives. Fortunately, hydroponics is the exact fit for the consumer’s new requirements. Some commercial installations use no pesticides or herbicides, preferring Integrated Pest Management Techniques. There is often a price premium willingly paid by consumers for produce which is labeled "Organic". This means that lawyers and lobbyists are paid to establish rules and laws determining exactly who can ch ...

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Hydroponics, Hydroponics - Uses, Hydroponics - History, Hydroponics - Techniques, Hydroponics - Passive hydroponics, Hydroponics - Flood and Drain or Ebb and Flow, Hydroponics - Deep Water CultureDWC, Hydroponics - Drip feeding, Hydroponics - Wick feeding, Hydroponics - Raft cultivation, Hydroponics - Nutrient film technique NFT, Hydroponics - Aeroponics, Hydroponics - Media, Hydroponics - Expanded Clay, Hydroponics - Rockwool, Hydroponics - Coco Coir, Hydroponics - Perlite, Hydroponics - Vermiculite, Hydroponics - Commercial, Hydroponics - Problems with hydroponics, Hydroponics - Present and future

Read more here: » Hydroponics: Encyclopedia II - Hydroponics - Commercial

Although hydroponics is useful and an expanding area of agriculture, it is not without problems. On large scale commercial operations computers can be used to help control the different factors, making hydroponics more complex and thus more expensive. However, the added benefit of computer controlled growing environments is that manual intervention is kept to a minimum. There are experimental computer systems which allow every aspect of the gro ...

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Hydroponics, Hydroponics - Uses, Hydroponics - History, Hydroponics - Techniques, Hydroponics - Passive hydroponics, Hydroponics - Flood and Drain or Ebb and Flow, Hydroponics - Deep Water CultureDWC, Hydroponics - Drip feeding, Hydroponics - Wick feeding, Hydroponics - Raft cultivation, Hydroponics - Nutrient film technique NFT, Hydroponics - Aeroponics, Hydroponics - Media, Hydroponics - Expanded Clay, Hydroponics - Rockwool, Hydroponics - Coco Coir, Hydroponics - Perlite, Hydroponics - Vermiculite, Hydroponics - Commercial, Hydroponics - Problems with hydroponics, Hydroponics - Present and future

Read more here: » Hydroponics: Encyclopedia II - Hydroponics - Problems with hydroponics

There are many texts available to new mothers to assist in the establishment of breastfeeding. The baby will usually indicate hunger by crying or moaning and fussing. When the baby's cheek is stroked, the baby will move his or her face towards the stroking and open his or her mouth, demonstrating the rooting instinct. Breastfeeding can make the mother thirsty and can last for up to an hour (usually in the early days, when both mother and baby are inexperienced) – it is therefore common for the mother to replace lost water by drinking during the process. See also:

Breastfeeding, Breastfeeding - Beginning lactation, Breastfeeding - The let-down reflex, Breastfeeding - Benefits, Breastfeeding - Benefits for the infant, Breastfeeding - Benefits for the mother, Breastfeeding - Bonding, Breastfeeding - Recommendations and research, Breastfeeding - Difficulties with breastfeeding, Breastfeeding - Breast refusal, Breastfeeding - Medical conditions of the infant, Breastfeeding - Medical conditions of the mother, Breastfeeding - When breastfeeding can be harmful to the infant, Breastfeeding - Health and diet, Breastfeeding - Feeding options and requirements, Breastfeeding - Expression, Breastfeeding - Infant formula, Breastfeeding - Tandem extended and shared breastfeeding, Breastfeeding - Breastfeeding method, Breastfeeding - Feeding and positioning, Breastfeeding - Breast and nipple pain, Breastfeeding - Weaning, Breastfeeding - History of breastfeeding, Breastfeeding - Developing alternatives, Breastfeeding - Breastfeeding in Japan, Breastfeeding - Breastfeeding in Canada, Breastfeeding - Breastfeeding in Cuba, Breastfeeding - Publicity promotion and law, Breastfeeding - Recent global uptake, Breastfeeding - Lactation without pregnancy

Read more here: » Breastfeeding: Encyclopedia II - Breastfeeding - Breastfeeding method

Initiatives have begun to encourage a resurgence of breastfeeding mothers. As a result of the International Code of Marketing of Breast-milk Substitutes, infant formula companies are now required to preface their product information with statements that breastfeeding is the best way of feeding babies and that a substitute should only be used after consultation with health professionals. Infant formula remains an infant feeding option. The baby bottle has become a very visible part of Western culture, and increasingly, of other develop ...

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Infant formula, Infant formula - Nutrient content, Infant formula - Variations, Infant formula - History, Infant formula - Controversy and Science, Infant formula - Recent trends, Infant formula - Manufacturers

Read more here: » Infant formula: Encyclopedia II - Infant formula - Recent trends

In more recent years the use of infant formula, even in developed countries, has come under scrutiny. Infant formula use has been shown to instigate and aggravate several infant conditions including insulin dependent diabetes mellitus[1], middle ear infections, and several bacterial infections[2]. The association of infant formula and allergies is still controversial[3] and an association with lower cognitive development has also been found, althoug ...

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Infant formula, Infant formula - Nutrient content, Infant formula - Variations, Infant formula - History, Infant formula - Controversy and Science, Infant formula - Recent trends, Infant formula - Manufacturers

Read more here: » Infant formula: Encyclopedia II - Infant formula - Controversy and Science

The first infant formula was developed by Henri Nestlé in the 1860s in response to the high mortality rate among infants in Switzerland in foundling homes. It was a combination of cow's milk and cereals and was called Farine Lactee. Infant formula became increasingly popular in developed countries during the 20th century as an alternative to breastfeeding. The medical community supported the use of infant formula because it believed that artificial feeding could be more easily monitored and ...

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Infant formula, Infant formula - Nutrient content, Infant formula - Variations, Infant formula - History, Infant formula - Controversy and Science, Infant formula - Recent trends, Infant formula - Manufacturers

Read more here: » Infant formula: Encyclopedia II - Infant formula - History