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Topic: Silicic acid

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	COGIMAX
		Silicic acid and mineral silicates are the active forms of silica and silicon in both plants and animals.
		Silicic acid and silicates increase the production of collagen by several mechanisms, one of which is the stimulation of an enzyme involved in the conversion of procollagen to collagen.
		Bioactive silicates increase the hydration of extracellular substances, and therefore adequate intake of water is required to replenish the extracellular interstitial fluid.
	www.optimox.com /pics/Cogimax/opt_Cogimax.html (817 words)

	Process for extracting pure, coarse grain silicic acid crystals from spent lye - Patent 5730838
		It is an object of the present invention that the silicic acid obtained in the overflow of the washing phase is introduced directly into the spent lye to be desilicified in the alkalizing container or in a dissolving container upstream of same.
		The contents in silicic acid is kept in all precipitation steps higher than 10 g/l through recycling into coarse crystalline silicic acid and the silicic acid precipitated per hour in the step which represents approximately 10% of the total silicic acid present in the step is conveyed to the crystallization step by means of inoculating.
		The coarse-grain silicic acid fraction is fed in major part to the first crystallization vessel 2 for inoculating and raising of the silicic acid contents of the spent lye to be desilified.
	www.freepatentsonline.com /5730838.html (2953 words)

	Process of making superfine amorphous high structure silicic acid - Patent 4003981
		silicic acid suspension into the dispersion interval and it is furthermore necessary to effect the dispersion during the entire alkaline precipitation phase (except for the sol phase), that is in case of the above precipitation process between the 30th and 90th minute of the precipitation.
		The silicic acids made by the process of the invention are further distinguished by the high value of the DBP absorption (high structure) and are superior in that respect to spray-dried silicic acids.
		The silicic acids of the invention are superior to the aerogels by their extremely high fine particle size which is not even paralleled by the well-known fine particle size of vapor jet or air jet ground silicic acids.
	freepatentsonline.com /4003981.html (9800 words)

	silicol
		Silicon is found in nature as silicon dioxide or silica, and in the hydrated or aqueous form as silicic acid.
		Silicon, as an oxygen compound - silicic acid, is found in most organs and tissues in the human body, mainly in the connective tissues, in the walls of the blood vessels, the lungs, the trachea, the tendons, bones and cartilage, the skin, hair and nails.
		Colloidal silicic acid is essential to human health and has a variety of functions within the human body.
	www.silicol.com (158 words)

	192. Silicon dioxide/amorphous/alum./cal./magnesium/sod. alum./silicates (FAO Nutrition Meetings Report Series 46a)
		Silicic acid is a normal constituent of the union, where it is found as early as a few days after birth.
		Silicic acid is present in plasma in a molybdate reactive form and is not bound to protein or any other substance of high molecular weight.
		Several silicates are apparently unattacked, as non-treated animals excreted an average of 8.6 mg in 120 hours.
	www.inchem.org /documents/jecfa/jecmono/v46aje60.htm (1944 words)

	Materia Medica
		Silicic acid, one form in which silicon exists in equisetum and comfrey (Symphytun spp.), is readily soluble in water, readily absorbed in the digestive tract once dissolved, and readily diffuses to the extracellular fluid reservoir and connective tissues.
		Thus a small amount of infused herbal material containing soluble silicic acid may provide more physiologically available silicon than much larger amounts of food in which the silicon is bound by fiber or fails to be extracted into solution in the small volume of fluid in the stomach and intestine.
		The physiological role of silicon, especially in the assimilable form of silicic acid, may explain the persistent traditional use of horsetail and comfrey for bone and connective tissue health.
	www.medherb.com /Materia_Medica/Equisetum_-_Silicon_in_horsetail_and_comfrey.htm (405 words)

	Kinetics of Chromate Adsorption on Goethite in the Presence of Sorbed Silicic Acid -- Garman et al. 33 (5): 1703 -- ...
		of silicic acid on the adsorption kinetics of arsenite and arsenate
		In the absence of adsorbed silicic acid the goethite
		Kinetics of arsenic adsorption on goethite in the presence of sorbed silicic acid.
	jeq.scijournals.org /cgi/content/full/33/5/1703 (3076 words)

	pyro clay
		Silicic acids can be extracted from sheet silicates in the form of monosilicic acid, orthosilicic acid and metasilicic acid.
		Selecting a suitable silicate clay for agricultural application is complicated not only by the fact that the specific elemental composition of each type of silicate clay is different, but the elemental composition varies even from one geological pocket to the next.
		The purpose of the trial was to determine the impact of silicic acid as a fungicide on chrysanthemums.
	www.greenair.com /pyro-gro.htm (2639 words)

	Silicate Summary
		The term acid is sometimes used as a synonym for silicic and the terms basic and ferromagnesian as synonyms for mafic.
		Silicates in which the tetrahedra share three corners are called phyllosilicates or sheet silicates, because they tend to cleave into thin sheets.
		Silicate minerals can be derived from the quartz, tridymite, and crystoballite structures by replacing a subset of the silicon ions with ions of a lower charge, together with placing other cations in places between tetrahedra to achieve overall neutrality.
	www.bookrags.com /Silicate (1330 words)

	Adult Acne
		A randomized double-blind study to assess the effects of silicic acid compared to placebo in patients with mild to moderate acne.
		In contrast, silicic acid significantly reduced the number of non-inflamed lesions, total acne lesions and the acne grade after 8 weeks and SER over 4 weeks when compared with placebo.
		There were no significant differences between silicic acid and placebo in the responses to the questionnaires or the global assessments after 8 weeks.
	www.acne-spots.com /adult-acne (470 words)

	What is Eidon Silica Mineral Supplement?
		Silicic acid is absorbed in the human gastrointestinal (GI) tract and transported throughout the body where it is used in the production and maintenance of collagen and connective tissue.
		Note that there is an equilibrium condition between silicic acid and oligomers which means that as silicic acid is removed (i.e.
		The bluish haze is created because of the tendency of silica oligomers to reflect the blue portion of the visible light spectrum, similar to air or water molecules.
	eidon.com /silicic_acid.htm (539 words)

	Building Stone Institute - Tech Topics
		To this end, silicic acid ester-based products have been used worldwide for decades now and their application can be judged as positive, without forgetting to take into account the limitations of this method, however.
		Silicic acid ester (SAE) is, formally seen, the ester of silicic acid and an alcohol (equation 1).
		The consolidating effect is based on the fact that SAE condenses in the presence of water to an amorphous silica gel in the form of small (10-20 mm) flakes which connect the components of a natural stone or another porous material and thus strengthen its inner structure.
	www.buildingstoneinstitute.org /tech_restoration.html (3100 words)

	XIV. An Approach To The Therapeutic Way Of Thinking
		Excessive quantities of silicic acid, which are neither excreted nor taken hold of by the ego-organization, must be deposited as foreign substances in the body; through the very form-creating tendency whereby — in the right quantity — they serve the ego-organization, they will then interfere with it.
		Through the combination of silicic acid with other substances it can be brought about that on its introduction into the organism the silicic acid reaches just that organ where it is needed, whence it will be carried out again as a product of excretion without doing harm to other organs.
		It will be necessary, therefore, to find a means of influencing the silicic acid activity of the whole organism, so as to deprive the localized action of its power; or again, the removal of the silicic acid may be stimulated by the use of medicines that encourage excretion.
	wn.rsarchive.org /Medicine/GA027_c14.html (1097 words)

	duofos - silicic acid (Site not responding. Last check: )
		Calcium silicic acid, which is usually used as silicic fertilizer, is made form non-organic matter, and their solubility is different.
		As 60% of the earth's crust is made of silicic acid, this is absorbed naturally, however the specific effect depends on the kind of silicic acid salt.
		Silicic acid rice plants make silicate cytoplasm in its rice to strengthen the rice, and protect itself from diseases and insects, and strengthen rice stalks.
	www.maduraguano.com /english/duofos/silicicacid.htm (172 words)

	260. Silicon dioxide and certain silicates (WHO Food Additives Series 5)
		Silicic acid is a normal constituent of the urine, where it is found as early as a few days after birth.
		Intragastric 5% silicic acid administered to dogs leads to considerable absorption and urinary excretion, peak excretion occurring between three to eight hours after dosing.
		Any silicate absorbed is excreted by the kidneys without evidence of toxic cumulation in the body, except for the reported damage to dog kidney by magnesium trisilicate and sodium silicate.
	www.inchem.org /documents/jecfa/jecmono/v05je04.htm (2890 words)

	silicic acid (Site not responding. Last check: )
		Sillicic acid is the acid that forms the esters and salts called silicates and is rapidly released from inorganic silicates by hydrochloric acid.
		Silicic acid, however, is inherently unstable and will rapidly condense with itself with the elimination of water forming ‘dimers’, ‘trimers’ and eventually high molecular weight polymers.
		Silicon is the second most common element on the earth’s surface and the aluminum silicates represent the clays and shale’s widely present in the earths crust.
	www.chromatography-online.org /topics/silicic/acid.html (676 words)

	What is horsetail(Equisetum arvense (L)) and it's super function?Horsetail Extract.CAS.NO.071011-23-9.Silica,Vegetal ...
		Constituents: minerals (silicic acids and silicates - 5-8%;potassium,aluminium,sulphur,manganese and magnesium),flavonoids (principally quercetin glycosides), phenolic acids, alkaloids (usually absent except for traces of nicotine, palustrine and palustrinine), saponin (equisetonin), bitter principle, phytosterols (cholesterol, isofucosterol, campesterol and others), tannins.
		The mineral content is significant: silica and silicic acid concentrations in the stems are usually from five to eight percent, which is probably why the hollow weeds were used to scour pots, and why horsetail is also called scouring rush.
		There is no valid experimental evidence to support the hypothesis that the silica and silicic acid derivatives in the drug promote the healing of bleeding tubercular lesions in the lung.
	www.mdidea.com /products/herbextract/horsetail/data.html (4775 words)

	PRESERVATION OF BIOORGANIC MOLECULES IN AMORPHOUS SILICA IN NATURE (Site not responding. Last check: )
		Silicic acid can form a variety of complexes with ions and organic molecules, including mucopolysaccharides, glycoproteins that are enriched in hydroxyl amino acids (serine and threonine), glycine, aspartic and glutamic acids.
		In addition, silicic acid is expected to form organic silicate complexes (Si-O-C) with hydroxyl centers from cis-1,2-diols that are fixed at ca.
		From these examples it is possible to see how various organic compounds, bacteria and fungi, or their remains, can make Si-O-C complexes with silicic acid and contribute to the crosslinking and hardening of the silicate polymers.
	www.psi.edu /~rperry/perry/GSA_Silica.html (373 words)

	Glossary : Silica
		Silicates can interfere with the crystal growths of precipitating metal and mineral cations thereby keeping such silicate complexed particulates in the colloidal size ranges, e.g., silicates are a contributor to formations of colloidal iron and colloidal manganese.
		These silicates are anodic corrosion inhibitors that will combine (react with) the free metal released at the anode site of corrosion activity in cipper, lead, cast iron and ferrous metals, steel, galvanized steel, bronze, red and yellow brass, and nickel alloys, to form an insoluble metal-silicate compound which seals off the corrosion site.
		These silicates can also be used to sequester soluble iron and manganese present in source waters to help prevent oxidation and the formation of red and fl water.
	www.wqa.org /glossary.cfm?gl=1941 (784 words)

	Current Research: Mark Brzezinski
		Silicic acid is regenerated in the sea through the dissolution of biogenic silica.
		Thus, the relative importance of new versus recycled silicic acid can control the amount of CO2 fixed by diatoms that is exported to the deep sea and ultimately the contribution of diatoms to the oceanic carbon dioxide sink.
		In recent years members of Brzezinski's laboratory discovered that diatoms fractionate isotopes of silicon when building their siliceous frustules and that this tool can be used to examine silicic acid use by diatoms onetime scales from days to millennia.
	www.lifesci.ucsb.edu /eemb/faculty/brzezinski/research/research.html (603 words)

	News \| Gainesville.com \| The Gainesville Sun \| Gainesville, Fla. (Site not responding. Last check: )
		Silicic acid is a general name for a family of chemical compounds of silicon, hydrogen, and oxygen, with the general formula x
		Silicic acids may be formed by acidification of silicate salts (such as sodium silicate) in aqueous solution.
		These algae polymerise the silicic acid to so-called biogenic silica, used to construct their cell walls (called frustules).
	www.gainesville.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=silicic_acid (175 words)

	Alzforum: Current Hypotheses
		Silicic acid readily transits the blood-brain barrier as does aluminum, the latter carried by transferrin.
		Wine is a rich source of silicic acid, and it is reasonable to expect wine drinkers to have higher blood levels of protective silicic acid than non-drinkers and a correspondingly lower incidence of AD.
		If silicic acid or aluminosilicate particulates are abundant in the blood, the aluminum will form covalent bonds with either and will then be circulated until excreted by the kidney.
	www.alzforum.org /res/adh/cur/meyer (2975 words)

	Reefs.org: Where Reefkeeping Begins on the Internet - Aquarium.Net Feb 97 Diatoms A Thiel
		To avoid having brown algae in the tank, all the hobbyist needs to do therefore is remove the silicate and the silicic acid both from the tank's water, and from the raw water used to prepare water for water changes, Kalkwasser, top-offs of evaporated water, and so on.
		Tests have shown that, when treating water with 14 ppm of silicate, the silicate and silicic acid came through the membrane and the resins used in combination with the R.O. unit, after less than 100 gallons of water had passed through the filtration set-up (lab.
		The conclusion to draw from this is that, regardless of how you filter your water, silicates and silicic acid will find their way into your aquarium's water, and you are going to have to take steps to remove it.
	www.reefs.org /library/aquarium_net/0297/0297_3.html (2202 words)

	column chromatography of phospholipids
		Column chromatography with silicic acid is by far the most widely adopted techniques when mg amounts of phospholipids must be prepared.
		Phospholipids are held by silicic acid in a variety of ways (hydrogen and ionic bonding...) and released by eluting the column with solvents of increasing polarity.
		The optimal load is practically of 30 mg of total lipids per g of dry silicic acid and the flow rate is between 1 and 3 ml according to the size of the column.
	www.cyberlipid.org /phlipt/pl3b0009.htm (345 words)

	Saguna - Silicol Gel
		The highest concentrations of silicic acid in the body are found in the connective tissue of the skin, hair and nails.
		Silicic acid helps to prevent weakness in the connective tissues.
		As we age, the amount of silicic acid in the skin depletes and the skin begins to slack and wrinkle.
	www.auravita.com /products/AURA/TWEN14520.asp (306 words)

	Diatoms
		To avoid having brown algae in the tank, all the hobbyist needs to do therefore is remove the silicate and the silicic acid both from the tank's water, and from the raw water used to prepare water for water changes, Kalkwasser, top-offs of evaporated water, and so on.
		The conclusion to draw from this is that, regardless of how you filter your water, silicates and silicic acid will find their way into your aquarium's water, and you are going to have to take steps to remove it.
		To ensure that this happens, the silicate removing compounds needs to be positioned in such a manner in the general aquarium water flow that all that water will indeed flow through it and not just over and by it.
	www.livingreefs.com /forums/archive/index.php/t-394.html (2031 words)

	Filter (Site not responding. Last check: )
		The hw silicic acid filter was developed mainly to remove residual silicic acid from the pure water (permeate) of reverse osmosis units and considerably limit diatom growth.
		The hw silicic acid filter must be connected to the pure water outlet (permeate pipe) of the reverse osmosis unit.
		The hw silicic acid filter must be connected by removing the hose sections with the sealing plugs from the inlet or outlet of the hw silicic acid filter.
	www.hw-wiegandt.de /Englisch/hw_Osmose_Technik/filter.html (975 words)

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