نتایج جستجو برای: inorganic substances
تعداد نتایج: 129448 فیلتر نتایج به سال:
Under resting conditions-that is, when metabolism is reduced to a minimum by chilling-previous experiments have indicated that sodium, potassium, inorganic phosphorus, and phosphate esters will not traverse the membrane of the red blood cell even when the concentrations of water, sodium, potassium, or inorganic phosphate in the serum are greatly altered (l-3). However, when the metabolic proces...
The mechanism by which plants cope with salt stress remains poorly understood. The goal of this study is to systematically investigate the contribution and distribution of inorganic ions and organic compounds to the osmotic adjustment (OA) in the halophyte species Halostachys caspica. The results indicate that 100-200 mM NaCl is optimal for plant growth; the water content and degree of succulen...
Abstract Aim Organic substances in leaves of several southwest Australian native species interfere with sensitive colorimetric assays and prevent quantification inorganic phosphate concentration ([Pi]). We aimed to develop a reproducible routine procedure for treating leaf extracts activated charcoal (AC) remove interfering substances, allowing the determination [Pi] by malachite green spectrop...
Hydroxyl radical (·OH) can rapidly react with biological macromolecules, organic and inorganic substances on account of its strong oxidizing property, so it is widely used in sewage treatment, chemiluminescence analysis, macromolecule modification other fields. The strengthening effect Hydrodynamic cavitation chemical reactions depends the number free radicals initiated by cavitation. These are...
Nanoscale zero-valent iron (NZVI) particles have been used for the remediation of a wide variety of contaminants. NZVI particles have high reactivity because of high reactive surface area. In this study, NZVI slurry was successfully used for phosphate removal and recovery. Batch studies conducted using different concentrations of phosphate (1, 5, and 10 mg PO4 -P/L with 400 mg NZVI/L) removed *...
Concrete is porous; the partial pores in internal structure of concrete are generated by hydration products, such as calcium hydroxide, dissolved water. External harmful substances form gases or aqueous solutions can penetrate concrete. The destruction leads to problems shortening service life well corrosion and poor durability steel. To improve pore concrete, a material be added mixtures cause...
Lysozyme, the purification and chemical properties of which have recently been described (l), was considered by Fleming (2) to be an enzyme. Its heat stability rather suggested a physicochemical action. Furthermore, some substances, such as rattlesnake venom, saponin, digitonin, cholic, choleic, and desoxycholic acids, have been found to bring about appreciable, but incomplete, lysis of organis...
Objective Maternal exposure to various contaminants has been reported to be correlated with congetinal heart defects (CHDs). In this study, the effect of maternal exposure to organic and inorganic environmental factors upon the incidence of CHDs was investigated. We conducted a retrospective birth cohort study of infants born in the Maternal and Child Health Hospital of Panyu District in Guangz...
The products of mechanical treatment are surface atoms or molecules, substances with a crystal structure different from their initial one (another polymorph, amorphous), point or linear defects, radicals and new chemical substances. It is often assumed, that to increase the yield of the products of a mechanical treatment, it is necessary to increase the treatment time and the mechanical power i...
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