Filling defect Subject

Treatment has also presented problems. One child was originally given allopurinol with bicarbonate when the stones were first reported to be uric acid (4), with no diminution in stone formation. The child has since been stone free for more than five years on allopurinol alone (10 mg/kg) without alkali (4). Another child was probably given antacid tablets prior to her presentation at the age of 19 months (5). One of the most recent cases (10) was treated with potassium citrate for a month presuming a uric acid stone, following the identification of a radiolucent stone by IVP and iric acid crystals in the urine. IVP one month later demonstrated an increase in the filling defect (10). Allopurinol without alkali (10 or 5 mg/kg, dependent on renal function) has elimanted 2,8-DHA from the urine and with it any further stone formation in affected subjects to date (6). 

Mercury thermometers are subject to separation of the mercury column or to inclusion of bubbles of the fill gas. These may result from shipping and handling and cause a scale offset which can usually be seen upon visual examination, and they are always recognized by a 0°C verification check. Manufacturers will suggest means by which these temporary defects may be cured. 

Treatment with Vapors of the Inorganic Precursor. The density of the inorganic walls can be increased postsynthesis by subjecting the material to an environment saturated with the vapors of the inorganic precursor. The vapors infiltrate into the wall of the structure, and fill any defects and microporous voids in the framework, which would otherwise lead to the collapse of the structure on template removal. The denser walls that result from the vapor treatment have much higher structural strength than those of untreated materials. 

Atom Movements by Jean Philibert, Les Editions de Physique, Les Ulis Cedex A Prance, 1991. My personal favorite on the subject of diffusion. This book is filled with both descriptive and quantitative accounts of point defects and their motion. 

Wherever the nature of the product makes it possible, every filled and sealed container of parenteral product should be inspected for physical defects and for particulate contamination and should be subjected to a test for leaks. 

Bone defects are often irregular and their filling can conveniently be carried out by hydraulic cements [DRI 95]. Plaster of Paris was one of the early cements to be used in reconstructive surgery, but its rapid degradation has favored the emergence of phosphocalcic cements, which have been the subject matter of considerable development in the last few years. The apphcatiorrs for the ftlling of these bone defects ate very promising, whether in the form of a molded paste placed in the... 

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