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Polyaspartic acid

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  • New Insights into Membrane Science and Technology: Polymeric and Biofunctional Membranes

    New Insights into Membrane Science and Technology: Polymeric and Biofunctional Membranes

    Control of membrane properties by precise pH control is the most easily visualized concept. The definite pKa for each functional group incorporated into the membrane structure allows for a very precise break in the permeability of a polymer grafted membrane. For example, the pKa for the carboxylic acid groups of polyaspartic acid is around 3.9.
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  • Cyanobacterial Bioenergy and Biofuels Science and Technology: A Scientometric Overview

    Cyanobacterial Bioenergy and Biofuels Science and Technology: A Scientometric Overview

    The “Web of Science” database of “Science Citation Index-Expanded” (SCIE), “Social Sciences Citation Index” (SSCI), and “Arts & Humanities Citation Index” (Garfield, 2006) was used for searching literature on the cyanobacterial research in general and the literature on the cyanobacterial bioenergy and biofuels in particular.
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  • The Regulatory Role of Matrix Proteins in Mineralization of Bone

    The Regulatory Role of Matrix Proteins in Mineralization of Bone

    d.3. Bone Acidic Glycoprotein-75 and Dentin Matrix Protein-1 Another sialoprotein originally isolated from rat bone has an apparent molecular weight of ∼75 kDa and hence is called bone acidic glycoprotein-75 (BAG-75) [424–426]. This protein is heavily glycosylated and contains 7% sialic acid and 8% phosphate. Thirty percent of the residues in this protein are acidic in nature.
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  • Cyanobacterial Bioenergy and Biofuels Science and Technology: A Scientometric Overview

    Cyanobacterial Bioenergy and Biofuels Science and Technology: A Scientometric Overview

    The “Web of Science” database of “Science Citation Index-Expanded” (SCIE), “Social Sciences Citation Index” (SSCI), and “Arts & Humanities Citation Index” (Garfield, 2006) was used for searching literature on the cyanobacterial research in general and the literature on the cyanobacterial bioenergy and biofuels in particular.
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  • Ring-Opening Polymerization and Special Polymerization Processes

    Ring-Opening Polymerization and Special Polymerization Processes

    Most early reports on brush and branched polypeptides utilized conventional NCA polymerization techniques. The first graft polypeptides were published in 1956 by Sela et al.61 Using poly(l-lysine) or poly(d/l-ornithine) as a multifunctional initiator for the ROP of a number of different NCAs, these authors prepared a variety of graft polypeptides, which they termed multichain poly(amino acids) (eqn [18]).
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  • Nanomicelles in Diagnosis and Drug Delivery∗

    Nanomicelles in Diagnosis and Drug Delivery∗

    The pH of tumor environment is acidic (6.5–7.2) compared with normal tissues (7.4). These differences in pH have been exploited to cleave the pH-sensitive ligands to release drugs from the micelles carriers.
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  • Intracellular Structures of Prokaryotes: Inclusions, Compartments and Assemblages

    Intracellular Structures of Prokaryotes: Inclusions, Compartments and Assemblages

    Cyanophycin is the third known polymer, the others being polyglutamate and polylysine, consisting of a restricted number of amino acids, that is synthesized by a nonribosomal synthetase.
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  • Sodium Salt of Polyaspartic Acid (PASP)

    Sodium Salt of Polyaspartic Acid (PASP)

    PASP is a kind of biopolymer materials, of which molecules contains abundant amido bond, carboxyl and other active groups. Amido peptide bond has biological activity and high chemical stability, hard to decompose at high temperature; carboxyl group can be complex with many metal ions in water, which make PASP have high chemical activity in aqueous solution; in each structural unit of PASP, the oxygen and nitrogen atoms can easily form hydrogen bonds with water molecules, it has good hydrophilicity and water solubility. The special molecular structure of PASP ensures that it has good dispersing ability, corrosion inhibiting properties, excellent biodegradability and environmental friendly characteristics.
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  • Polyaspartic Acid Sodium Salt (PASP)

    Polyaspartic Acid Sodium Salt (PASP)

    Polyaspartic acid sodium salt is a water-soluble polymer. It is a green water treatment agent with properties of non-phosphor, non-nitrogen, non-pollution, and fully biodegradation.
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  • chelant fertilizer-ESSENTIAL NUTRIENTS FOR PLANTS

    chelant fertilizer-ESSENTIAL NUTRIENTS FOR PLANTS

    To be able to grow, develop, and produce at their best, plants must have specific elements or compounds called plant essential nutrients.A plant that lacks an essential nutrient cannot complete its life cycle—the seed may not germinate; the plant may not be able to develop roots, stems, leaves, or flowers properly; or it may not be able to produce seeds to create new plants. Often the plant itself will die.However, having too much of a nutrient can harm and even kill plants. For example, having too much nitrogen can cause a plant to grow more leaves but less or no fruit. Too much manganese can make the leaves turn yellow and eventually die. And excess boron can kill a plant.You can save money and effort—and even your plants— if you know what and how much to give your plants. The plants will be healthier and more productive if you give them what they need—no more and no less.
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