Chyme is the liquid substance found in the stomach before passing the pyloric valve and entering the duodenum. It consists of partially digested food, water, hydrochloric acid, and various digestive enzymes. Chyme slowly passes through the pyloric valve and into the duodenum where the extraction of nutrients begins. Depending on the quantity and contents of the meal, the stomach will digest the food into chyme anywhere between 40 minutes and a few hours. Other related archivesdigestive, duode

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Choline is a quaternary saturated amine with the chemical formula (CH3)3N+CH2CH2OHX-. where X- is a counterion such as chlorine (see choline chloride), hydroxide or tartrate. Choline was discovered by Strecker in 1862 and chemically synthesized in 1866. In 1998 choline was classified as an essential nutrient by the Food and Nutrition Board of the Institute of Medicine (U.S.A.) and Adequate Intakes (AI) have been established. Choline

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Choanocytes (also known as "collar cells") are cells that line the interior body walls of sponges that contain a central flagellum surrounded by a collar of microvilli. It is the closest family member to the free-living ancester called chanoflagellate The flagellum beats regularly, creating a water flow across the microvilli which can then filter nutrients and other food from the water taken from the collar of the sponge. The sponge-like propriety of these cells is that they

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Chemosynthesis is the biological conversion of 1-carbon molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis. Large populations of animals can be supported by chemosynthetic primary production at hydrothermal ...

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Rhinanthus minor Yellow Rattle (Rhinanthus minor) is a flowering plant of the genus Rhinanthus in the family Scrophulariaceae (the figworts. This is a semi-parasitic plant that gains some of its nutrients from the roots of neighbouring plants. The name refers to the seedpods, which contain loose, rattling seeds when ripe. Its preferred habitat is dry fields or meadows, where it can grow up to 24 inches tall ...

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Zooxanthellae are golden-brown intracellular endosymbionts of various marine animals and protozoa. They are typically dinoflagellate algae, although other algae such as diatoms can also be zooxanthellae. They are often acquired by direct ingestion, and subsequently multiply in the host's tissues, providing it with various nutrients. Their population in the host tissue is limited by controlling the amount of food and light they receive and by digestion of excess cells. There ar ...

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Each of these nutrients are used in a different place for a different essential function. Carbon Carbon is what most of the plant is made of. It forms the backbone of many plant biomolecules, including starches and cellulose. Carbon is fixed through photosynthesis from the carbon dioxide in the air and is a part of the carbohydrates that store energy in the plant. Hydrogen Hydrogen also is necessary for building sugars and building the plant. It is obtained from air and ...

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Plant nutrition, Plant nutrition - Plant uses for essential nutrients

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There are a variety of techniques employed in hydroponics. Some, while dispensing with soil, use relatively inert material as a physical support for the plant roots. Other techniques dispense altogether with any growing medium, delivering nutrient solution directly to the roots by a variety of methods. Hydroponics - Passive hydroponics. The simplest method: the plant is planted in a container (pot or bag) of growing medium, and the container stands in a tray of nutrient solution. The medium generally has l ...

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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

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Despite popular belief, a reliance on a single food which composes the majority of a diet is indicative of poor eating habits. An individual on such a diet may be prone to deficiency, and most certainly will not be fulfilling the Recommended Nutrient Intake. While plants, vegetables and fruits are known to help reduce the incidence of chronic disease, [1], the benefits on health posed by plant-based foods, as well as the percentage of wh ...

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Healthy diet, Healthy diet - Healthy diet, Healthy diet - Definition, Healthy diet - Food choice, Healthy diet - How much to eat?, Healthy diet - Regulation of intake, Healthy diet - Eating more or less of particular nutrients, Healthy diet - Government involvement, Healthy diet - Problems with government approaches

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Numerous ecological effects can arise where primary production is stimulated, but there are three particularly troubling ecological impacts: decreased biodiversity, changes in species composition and dominance, and toxicity effects. Eutrophication - Decreased biodiversity. When a body of water experiences an increase in nutrients, primary producers reap the benefits first. This means that species such as algae experience a population increase (called an algal bloom). Algal blooms tend to disturb the ecosys ...

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Eutrophication, Eutrophication - Concept of eutrophication, Eutrophication - Ecological effects, Eutrophication - Decreased biodiversity, Eutrophication - New species introduction, Eutrophication - Toxicity, Eutrophication - Sources of high nutrient runoff, Eutrophication - Point sources, Eutrophication - Nonpoint sources, Eutrophication - Other causes, Eutrophication - Prevention and reversal, Eutrophication - Effectiveness, Eutrophication - Minimizing nonpoint pollution: future work, Eutrophication - Natural state of algal blooms

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There are a variety of techniques employed in hydroponics. Some, while dispensing with soil, use relatively inert material as a physical support for the plant roots. Other techniques dispense altogether with any growing medium, delivering nutrient solution directly to the roots by a variety of methods. Hydroponics - Passive hydroponics. The simplest method: the plant is planted in a container (pot or bag) of growing medium, and the container stands in a tray of nutrient solution. The medium generally has l ...

See also:

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

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Nonpoint Sources Runoff from agriculture/irrigation Runoff from pasture and range Urban runoff from unsewered areas Septic tank leachate Runoff from construction sites <20,000 m² Runoff from abandoned mines Atmospheric deposition over a water surface Other land activities generating contaminants In order to gauge how to best prevent eutrophication from occurring, specific sources that contribut ...

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Eutrophication, Eutrophication - Concept of eutrophication, Eutrophication - Ecological effects, Eutrophication - Decreased biodiversity, Eutrophication - New species introduction, Eutrophication - Toxicity, Eutrophication - Sources of high nutrient runoff, Eutrophication - Point sources, Eutrophication - Nonpoint sources, Eutrophication - Other causes, Eutrophication - Prevention and reversal, Eutrophication - Effectiveness, Eutrophication - Minimizing nonpoint pollution: future work, Eutrophication - Natural state of algal blooms

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Eutrophication can be a natural process in lakes, occurring as they age through geological time. Also, estuaries tend to be naturally eutrophic because land-derived nutrients are concentrated where run-off enters the marine environment in a confined channel (Bianchi et al., 2000) and mixing of relatively high nutrient fresh water with low nutrient marine water occurs. However, human activities can accelerate the rate at which nutrients enter ecosystems. Runoff from agriculture and development, pollution from septic systems and sewers, and ot ...

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Eutrophication, Eutrophication - Concept of eutrophication, Eutrophication - Ecological effects, Eutrophication - Decreased biodiversity, Eutrophication - New species introduction, Eutrophication - Toxicity, Eutrophication - Sources of high nutrient runoff, Eutrophication - Point sources, Eutrophication - Nonpoint sources, Eutrophication - Other causes, Eutrophication - Prevention and reversal, Eutrophication - Effectiveness, Eutrophication - Minimizing nonpoint pollution: future work, Eutrophication - Natural state of algal blooms

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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 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

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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 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

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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

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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 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 - 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 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 - Problems with hydroponics

Eutrophication poses a problem not only to ecosystems, but to humans as well. Reducing eutrophication should be a key concern when considering future policy, and a sustainable solution for everyone, including farmers and ranchers, seems feasible. While eutrophication does pose problems, humans should be aware that natural runoff (which causes algal blooms in the wild) is common in ecosystems and should thus not reverse nutrient concentrations beyond normal levels.

Eutrophication, Eutrophication - Concept of eutrophication, Eutrophication - Ecological effects, Eutrophication - Decreased biodiversity, Eutrophication - New species introduction, Eutrophication - Toxicity, Eutrophication - Sources of high nutrient runoff, Eutrophication - Point sources, Eutrophication - Nonpoint sources, Eutrophication - Other causes, Eutrophication - Prevention and reversal, Eutrophication - Effectiveness, Eutrophication - Minimizing nonpoint pollution: future work, Eutrophication - Natural state of algal blooms

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Most of the world's supply of infant formula is produced in the United States. The nutrient content is regulated by the American Food and Drug Administration (FDA) based on recommendations by the American Academy of Pediatrics Committee on Nutrition. The following must be included in all formulas produced in the U.S.: Protein Fat Linoleic acid Vitamins: A, C, D, E, K, thiamin (B1), riboflavin (B2), B6, B12 Niacin Folic acid Pantothenic acid Calcium Metals: phosphorus, magnesium, iron, zinc, manganese, copper Iodine

Entire section ref.[1] Most pet owners have heard that it is better to feed their animals specially formulated food for pets rather than table scraps. An occasional treat is fine, but table scraps used to excess may unbalance a pet's diet. Purchasing pet foods labeled as "complete and balanced" can help ...

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Cat food, Cat food - Ingredients of Cat Food, Cat food - Forms of Commercial Cat Food, Cat food - Cat Food Nutrient Profiles, Cat food - Cat food brands, Cat food - Further Information

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