منابع مشابه
SCALE FORMATION IN CHRYSOPHYCEAN ALGAE I . Cellulosic and Noncellulosic Wall Components Made by the Golgi Apparatus
The cell wall of the marine chrysophycean alga Pleurochrysis scherfellii is composed of distinct wall fragments embedded in a gelatinous mass . The latter is a polysaccharide of pectic character which is rich in galactose and ribose . These wall fragments are identified as scales . They have been isolated and purified from the vegetative mother cell walls after zoospore formation . Their ultras...
متن کاملsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
Nitrite and Formaldehyde Formation in Certain Algae.
I. Photochemical reduction of nitrate to nitrite within the algal cell For a number of years there has been disagreement on the question as to whether or not light plays an important part in the reduction of nitrate to nitrite by the green plant. Some investigators, including NIGHTINGALE (12, 13, 14), THOMAS (16), ECKERSON (7, 8, 9, 10), MUENSCHER (11), and ANDERSON (4), have presented evidence...
متن کاملMechanism and Prevention of Scale Formation in Boilers
Nucleate boiling heat transfer coefficients may be strongly reduced by scale formation, even for conditions where the bulk foulant concentration is well below the saturation concentration. Due to the mechanism of micro-layer evaporation, the local concentration at the heat transfer surface can be considerably increased, causing the formation of scale and changes in bubble frequency and bubble d...
متن کاملAlgae (Dasycladales) from the Upper Triassic Nayband Formation (northeast Iran)
Dasycladales are relatively abundant in the bedded limestones of the Bidestan and Howz-e Khan members of the Late Triassic Nayband Formation in central Iran. In a locality south of the town of Naybandan (northwest of Dig-e Rostam), several Rhaetian dasycladacean algae were found in thin sections. The following taxa are described: Diplopora phanerospora Pia, Naybandoporella rhaetica nov. gen. no...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1970
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.45.2.246