scholarly journals Effects of the calcination atmosphere and pre-heating treatment on the characteristics of sodium titanate nanorods synthesized from titanium tetraisopropoxide-sodium chloride precursors assisted by organic templates

2020 ◽  
Vol 128 (7) ◽  
pp. 415-423
Author(s):  
Zikri NOER ◽  
Timbangen SEMBIRING ◽  
Kerista SEBAYANG ◽  
Muhammad Noer NASRUDDIN ◽  
Rifki SEPTAWENDAR ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Sodium Titanate ◽  
Titanium Tetraisopropoxide ◽  
Organic Templates ◽  
Heating Treatment ◽  
Calcination Atmosphere

scholarly journals The effect of the calcination atmosphere in the formation of mineral sodium titanate

2020 ◽  
Author(s):  
Zikri Noer ◽  
Timbangen Sembiring ◽  
Kerista Sebayang ◽  
Nasruddin MN ◽  
Rifki Septawendar ◽  
...  
Keyword(s):  
Sodium Titanate ◽  
Calcination Atmosphere

Otoconia perfect/imperfect crystals

1994 ◽  
Vol 52 ◽  
pp. 42-43
Author(s):  
César D. Fermin ◽  
Dale Martin
Keyword(s):  
Image Processing ◽  
Room Temperature ◽  
Phosphotungstic Acid ◽  
Gallus Domesticus ◽  
Crystal Matrix ◽  
Organic Templates ◽  
Image Processing Algorithms ◽  
Processing Algorithms ◽  
Diffraction Patterns

Otoconia of higher vertebrates are interesting biological crystals that display the diffraction patterns of perfect crystals (e.g., calcite for birds and mammal) when intact, but fail to produce a regular crystallographic pattern when fixed. Image processing of the fixed crystal matrix, which resembles the organic templates of teeth and bone, failed to clarify a paradox of biomineralization described by Mann. Recently, we suggested that inner ear otoconia crystals contain growth plates that run in different directions, and that the arrangement of the plates may contribute to the turning angles seen at the hexagonal faces of the crystals.Using image processing algorithms described earlier, and Fourier Transform function (2FFT) of BioScan Optimas®, we evaluated the patterns in the packing of the otoconia fibrils of newly hatched chicks (Gallus domesticus) inner ears. Animals were fixed in situ by perfusion of 1% phosphotungstic acid (PTA) at room temperature through the left ventricle, after intraperitoneal Nembutal (35mg/Kg) deep anesthesia. Negatives were made with a Hitachi H-7100 TEM at 50K-400K magnifications. The negatives were then placed on a light box, where images were filtered and transferred to a 35 mm camera as described.

OBSERVATIONS UPON THE WITHDRAWAL OF SODIUM CHLORIDE FROM THE DIET IN HYPERTENSIVE AND NORMOTENSIVE INDIVIDUALS

1955 ◽  
Vol 20 (2) ◽  
pp. 173-180 ◽  
Author(s):  
Reata Renwick ◽  
J. S. Robson ◽  
C. P. Stewart
Keyword(s):  
Sodium Chloride

ABOLITION OF MAGNESIUM-INDUCED HYPOCALCAEMIA BY ACUTE THYRO-PARATHYROIDECTOMY IN THE CAT

1970 ◽  
Vol 64 (1) ◽  
pp. 150-158 ◽  
Author(s):  
S. Pors Nielsen
Keyword(s):  
Sodium Chloride ◽  
Flow Rate ◽  
Magnesium Chloride ◽  
Calcium Concentration ◽  
Plasma Calcium ◽  
Magnesium Concentration ◽  
Isotonic Sodium Chloride ◽  
Plasma Calcium Concentration ◽  
High Concentrations ◽  
Plasma Magnesium

ABSTRACT Intravenous infusion of isotonic magnesium chloride into young cats with a resultant mean plasma magnesium concentration of 7.7 meq./100 g protein was followed by a significant lowering of the plasma calcium concentration in 90 minutes. The rate of decrease of plasma calcium is consistent with the hypothesis that calcitonin is released by magnesium in high concentrations. There was no decrease in the plasma calcium concentration in cats of the same weight thyroparathyroidectomized 60 min before an identical magnesium chloride infusion or an infusion of isotonic sodium chloride at the same flow rate. The hypercalciuric effect of magnesium could not account for the hypocalcaemic effect of magnesium. Plasma magnesium concentration during magnesium infusion into cats with an intact thyroid-parathyroid gland complex was slightly, but not significantly higher than in acutely thyroparathyroidectomized cats.

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