The Kinetics of Crystal Growth of Calcium Oxalate PDF Download
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Author: Mary Elizabeth Sheehan
Publisher:
ISBN:
Category : Calcium oxalate
Languages : en
Pages : 242
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Book Description
Author: Mary Elizabeth Sheehan
Publisher:
ISBN:
Category : Calcium oxalate
Languages : en
Pages : 242
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Book Description
Author: George V. Karas
Publisher: Nova Publishers
ISBN: 9781594545405
Category : Science
Languages : en
Pages : 250
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Book Description
Experimental and theoretical aspects of crystal growth and its applications, e.g. in devices, are within the scope of these new books . Experimental and theoretical contributions are included in the following fields: theory of nucleation and growth, molecular kinetics and transport phenomena, crystallisation in viscous media such as polymers and glasses; crystal growth of metals, minerals, semiconductors, superconductors, magnetics, inorganic, organic and biological substances in bulk or as thin films; molecular beam epitaxy, chemical vapour deposition, growth of III-V and II-VI and other semiconductors; characterisation of single crystals by physical and chemical methods; apparatus, instrumentation and techniques for crystal growth, and purification methods; multi-layer heterostructures and their characterisation with an emphasis on crystal growth and epitaxial aspects of electronic materials.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
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Book Description
The constant composition method was used to investigate the effect of polyaspartic acids on calcium oxalate monohydrate crystal (COM) growth. Three larger molecular weight (ranging from 6000--35000) polymers were first used, and it was found that a polyaspartic acid with a molecular weight of 13000 had the highest effect. The ability to inhibit molecular growth is similar on a molar level to osteopontin, a protein commonly found in urine that has been shown to significantly inhibit calcium oxalate monohydrate crystal growth. The effect of three smaller weight (around 3000) polyaspartic acids was also investigated. However, at such low molecular weights, polyaspartic acid is unstable; amino acid spacers must be added to the polymer. The spacer used markedly affects the effectiveness of the copolymer towards the inhibition of COM crystal growth. A copolymer with serine spacers is most effective, followed by one with a phosphoserine spacer and then one with a glycine spacer, although all three are less effective than the three higher molecular weight polymers. Atomic force microscopy studies show that the polyaspartic acid with serine spacers is much more effective at inhibiting COM growth on the (010) and ( -101) faces than the copolymer with glycine spacers. Using a thin layer wicking technique, the interfacial energies of COM treated with various proteins and polyaspartic acids were determined. It was hoped that there would be a trend in either the Lewis base term and/or in the interfacial energy term that paralleled their effects on COM crystal growth (i.e. 13000 molecular weight polyaspartic acid would have a similar Lewis base term and/or interfacial energy). However, no trend was established. Constant composition experiments were also made in attempts to nucleate COM on dentin surfaces. The goal of these experiments was to nucleate COM crystals such that they occlude the open tubules in dentin (the condition in which a person has exposed tubules is called dentine sensitivity). At moderate supersaturations, COM crystals did nucleate on the surface of dentin disks. However, these crystals were not small enough and thus did not nucleate inside the tubules.
Author: Zahid Amjad
Publisher: Springer Science & Business Media
ISBN: 0306469243
Category : Science
Languages : en
Pages : 271
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Book Description
In this book, academic researchers and technologists will find important information on the interaction of polymeric and non-polymeric inhibitors with a variety of scale forming crystals such as calcium phosphates, calcium carbonate, calcium oxalates, barium sulfate, calcium pyrophosphates, and calcium phosphonates. Moreover, the book delivers information to plant managers and formulators who would like to broaden and deepen their knowledge about processes involved in precipitation of sparingly soluble salts and learn more about the inhibitory aspects of various commercially available materials. Furthermore, experienced researchers will obtain fruitful and inspiring ideas from the easily accessible information about overlapping research areas, which will promote discoveries of new inhibitors (synthetic and/or natural) for the currently unmet challenges.
Author: Saeed R. Khan
Publisher: CRC Press
ISBN: 1000099008
Category : Science
Languages : en
Pages : 400
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Book Description
Written by leaders in their fields, Calcium Oxalate in Biological Systems comprehensively discusses current information about the importance of this compound in animals, plants, fungi, and microorganisms. Both in vivo and in vitro methods of crystallization as well as crystallization systems are discussed. Researchers who pioneered the field contribute their invaluable knowledge for the first time about oxalate bacteria and their importance. This is an essential reference for both plant and animal scientists concerned with human and animal kidney disease.
Author: Jin-hwan Jeon
Publisher:
ISBN:
Category :
Languages : en
Pages : 180
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Book Description
Author: Elena Borisenko
Publisher: BoD – Books on Demand
ISBN: 9533076089
Category : Science
Languages : en
Pages : 346
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Book Description
Crystal growth is an important process, which forms the basis for a wide variety of natural phenomena and engineering developments. This book provides a unique opportunity for a reader to gain knowledge about various aspects of crystal growth from advanced inorganic materials to inorganic/organic composites, it unravels some problems of molecular crystallizations and shows advances in growth of pharmaceutical crystals, it tells about biomineralization of mollusks and cryoprotection of living cells, it gives a chance to learn about statistics of chiral asymmetry in crystal structure.
Author: John D. DeLong
Publisher:
ISBN:
Category : Calcium oxalate
Languages : en
Pages : 470
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Author: Z. Amjad
Publisher: Springer Science & Business Media
ISBN: 1489914005
Category : Science
Languages : en
Pages : 356
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Book Description
This book documents the proceedings of the symposium, "Mineral Scale Formation and Inhibition," held at the American Chemical Society Annual Meeting August 21 to 26, 1994, in Washington, D. C. The symposium, sponsored by the Division of Colloid and Surface Chemistry, was held in honor of Professor George H. Nancollas for his pioneering work in the field of crystal growth from solution. A total of 30 papers were presented by a wide spectrum of scientists. This book also includes papers that were not presented but were in the symposium program. The separation of a solid by crystallization is one of the oldest and perhaps the most frequently used operations in chemistry. Because of its widespread applicability, in recent years there has been considerable interest exhibited by academic and industrial scientists in understanding the mechanisms of crystallization of sparingly soluble salts. The salt systems of great interest in industrial water treatment area (i. e. , cooling and boiler) include carbon ates, sulfates, phosphates, and phosphonates of alkaline earth metals. Although not as common as calcium carbonate and calcium sulfate, barium and strontium sulfates have long plagued oil field and gas production operations. The build-up of these sparingly soluble salts on equipment surfaces results in lower heat transfer efficiency, increased corrosion rates, increased pumping costs, etc. In the laundry application, insoluble calcium carbonate tends to accumulate on washed fabrics and washing equipment parts, resulting in undesirable fabric-encrustation or scaling.
Author: Walter Francis Klima
Publisher:
ISBN:
Category : Crystal growth
Languages : en
Pages : 316
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Book Description
