نتایج جستجو برای: phosphate composition

تعداد نتایج: 360618  

Journal: :Journal of clinical pathology 1971
A Hodgkinson

A better understanding of the physico-chemical principles underlying the formation of calculus has led to a need for more precise information on the chemical composition of stones. A combined qualitative and quantitative procedure for the chemical analysis of urinary calculi which is suitable for routine use is presented. The procedure involves five simple qualitative tests followed by the quan...

Zn-Al layered double hydroxide (LDH) nanoparticles with carbonate as the charge balancing anion in the interlayer space were synthesized using co-precipitation method. Then, the carbonate base Zn-Al LDH nanoparticles were doped with phosphate ion via anion-exchange reaction to synthesize Zn-Al-[PO43-]-[CO32-]. The structure and composition were characterized by X-ray diffraction (XRD), Fourier ...

In this study, a new bioactive and light-cure polymeric calcium phosphate nanocomposite containing a powder phase consisting of pure TetraCalciumPhosphate was synthesized by solid state sintering. By using indomethacin, a non-steroidal anti-inflammatory drug, and a liquid phase including polyhydroxy-based resin, Ethyl Methacrylate was prepared and evaluated after curing with the high-intensity ...

Journal: :Applied and environmental microbiology 1981
N Tsukagoshi H Yamada A Tsuboi S Udaka

Bacillus brevis 47 secreted up to 1 mg of protein per ml in a chemically defined medium, depending on phosphate concentration. The composition of exoproteins was altered quantitatively by the concentration of external phosphate. Morphologically, B. brevis 47 showed a distinct three-layered cell wall structure and shed the outer two layers during growth.

2000
A. CuÈ

Calcium phosphate (hydroxyapatite and tri-calcium phosphate) bioceramics closely resembling, in chemical composition, those found in vivo in human bones have been synthesized by using novel synthetic body ̄uid solutions via the self-propagating combustion synthesis (SPCS) method. Powder characterization was performed by XRD, ICP-AES, FTIR and SEM. # 2000 Elsevier Science Ltd. All rights reserved.

Journal: :Applied microbiology 1964
W A ZYGMUNT

Production of oxytetracycline by Streptomyces rimosus in several chemically defined media containing graded concentrations of inorganic phosphorus was studied in shake flasks. Although high levels of inorganic phosphate have been reported to inhibit oxytetracycline formation, this study indicated that composition of the medium is an important factor in determining whether antibiotic production ...

2002
Marisa M. Beppu Cesar C. Santana

The influence of the calcification solution on the mineralization of chitosan membranes was analysed. Two factors were studied: pH and chemical composition (excess of calcium or phosphate ions) of solutions. Substrates (membranes) of chitosan underwent mineralization by soaking in calcification solutions for 7 days at 36.5 °C. As expected, SEM-EDS analyses demonstrated that higher pH and concen...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1998
B Essigmann S Güler R A Narang D Linke C Benning

Photosynthetic membranes of higher plants contain specific nonphosphorous lipids like the sulfolipid sulfoquinovosyl diacylglycerol in addition to the ubiquitous phospholipid phosphatidylglycerol. In bacteria, an environmental factor that drastically affects thylakoid lipid composition appears to be the availability of phosphate. Accordingly, we discovered an increase in the relative amount of ...

2014
Samer Mudalal Massimiliano Petracci Silvia Tappi Pietro Rocculi Claudio Cavani

Because the use of phosphates has being recently diminished in meat industry due to the nutritional drawbacks of phosphates, some researchers started to evaluate sodium bicarbonate as phosphate replacer in meat products. The aim of this study was to evaluate the effect of different temperature combinations of dry air-cooking treatments (Air and Core temperatures: 160 76, 160 80, 200 76 and 200 ̊...

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