Algae diatoms

Corrosion inhibitors used in offshore oil production are highly cationic. However, the use of such cationic-based corrosion inhibitors for offshore oil platforms is becoming less acceptable for environmental reasons. Cationic inhibitors are attracted to metal surfaces, thereby controlling the acid-type corrosion. When these cationic corrosion inhibitors enter seawater, they are attracted to a particular type of algae, diatomes. These algae are part of a food-chain for mussels. The cationic inhibitors inhibit the growth of these algae. Betaines and ampholytes [1067] can be used instead of cationic inhibitors or... 

Algal sources are ice algae, diatoms, cyanobacteria, dinoflagellates, and picoplankton petroleum sources include eroded bitumens, oil seeps, etc. 

Table 8.30 shows the chemistry of seawater compiled by Turekian (1969) for major, minor, and trace constituents, expressed in parts per billion (ppb) at a mean salinity of 35. The listed values are estimates of mean amounts in solution, whereas elemental concentrations actually vary with depth. The most conspicuous variations are observed in the first 200 m from the surface, where photosynthetic processes are dominant and phosphorus and nitrogen are fixed by plankton and benthos, as well as silica and calcium, which constitute, respectively, the skeletons of planktonic algae (diatom) and the shells of foraminifera and mollusks. 

A striking feature of the Roseobacter clade is that many isolates are symbionts of marine organisms, e.g., algae, diatoms, dinoflagellates, or have been obtained from surfaces of marine macrophytes. For example, gall inhabitants of... 

Algae—diatoms (Skelotonema costatum, Phaeodactylum tricomutum) Duckweed (Lemna minor)... 

MARINE ALGALTOXKIT Algae (diatoms) Phaeodactylum tricomutum 72 h Chronic toxicity (growth inhibition) ISO... 

Highly branched isoprenoids (c20> C25, and C30) Algae (diatoms) Silliman et al. (1998)... 

Methylcholesta-5,24(28)-dien-3/3-ol 28A5,24(2 ) Algae diatoms Algae Nichols et al. (1990) Volkman (1986)... 

Chromista One to multicelled, eukaryotic Brown and golden algae, diatoms... 

Silicon is extremely important as a building block of unicellular algae -diatoms. The main building material of the frustule (the finely sculptured protective surface layer of diatoms) is a float-stone, an opal-like water-containing polymer of silica Diatoms are the only group of organisms whose development is totally dependent on the presence of soluble forms of silica in the environment. When silicon sources run out, DNA replication stops. 

Properties Soft, bulky, solid material (88% silica) composed of skeletons of small prehistoric aquatic plants related to algae (diatoms). They have intricate geometric forms. Available as light-colored blocks, bricks, powder, etc. True d 1.9-2.35, bulk density from 5 to 15 lb/cu ft. Insoluble in acids except hydrogen fluoride, soluble in strong alkalies. Absorbs 1.5 1 times its weight of water, has high oil absorption capacity. Poor conductor of sound, heat, and electricity. Noncombustible. 

There is macroporous silica diatomite or diatomeceous earth as biological deposits of sea algae diatom . This is used as an industrial filter aid and heat insulator. The inside space of the bamboo stems and the rice straws contain silicas of high purity. 

It is a plant sterol (phytosterol) present in canola oils and rape seed but is also found in some marine algae, diatoms and shellfish (oysters). It inhibits the enzyme A24-sterol reductase that is involved in mammalian cholesterol biosynthesis pemandez et al. Biochem J 336 109 2002], Brassino steroids have plant growth regulating activities [Anastasia et al. J C S Perkin 1379 7982.]... 

Diatomaceous earth, or DE, is the processed fossilized remains of marine and freshwater algae (diatoms). It is commonly used as a general filtration aid. Occasionally, DE may bleed through the filtration matrix, ending up in the wine. It can be readily identified by microscopic examination. 

Chlorophyll-b Chlorophyll-c Chlorophyll-d Protochlorophyll Green plants, green algae Brown algae, diatoms Red algae Etiolated plants Red and blue-violet Near red, blue-violet ably exist in a corn-lex with protein and lipide-like material... 

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