No abstract available

[en] A high clarity polymeric composition which is stable toward sterilizing radiation includes a semi-crystalline polyolefin of narrow molecular weight distribution having incorporated therein a liquid mobilizing additive, a radiation stabilizing amount of a hindered amine and a clarifying agent. The invention includes a sterilized article fabricated from the composition and a method to radiation sterilize the article

No abstract available

No abstract available

[en] This patent describes a fired monolithic structure. It consists 80-100% by weight of a sintered ceramic phase of a porous metal oxide material consisting of 50-100% by weight of titania, zirconia, titania-zirconia mixtures, titania-alumina mixtures, zirconia-alumina mixtures or zirconia-alumina-titania mixtures; and 0-50% by weight of a ceramic metal oxide material other than alumina, titania, or zirconia; and P₂O₅ substantially dispersed throughout the porous metal oxide material in an amount of about 0.5-15% by weight, based on the total weight of the P₂O₅ and component; and 0-20% by weight of catalytic material selected from the group consisting of catalytic metal and catalytic metal oxide

No abstract available

No abstract available

[en] The concept that there are physiologic mechanisms to homeostatically regulate plasma fluoride concentrations has been supported by results in the literature suggesting an inverse relationship between plasma fluoride levels and the absorption of the ion from the gastrointestinal tract of the rat. The validity of the relationship was questioned because of possible problems in the experimental design. The present work used four different methods to evaluate the effect of plasma fluoride levels on the absorption of the ion in rats: (i) the percentage of the daily fluoride intake that was excreted in the urine; (ii) the concentration of fluoride in femur epiphyses; (iii) the net areas under the time-plasma fluoride concentration curves after intragastric fluoride doses; and (iv) the residual amounts or fluoride in the gastrointestinal tracts after the intragastric fluoride doses. None of these methods indicated that plasma fluoride levels influence the rate or the degree or fluoride absorption. It was concluded that, unless extremely high plasma fluoride levels are involved (pharmacologic or toxic doses), the absorption of the ion is independent of plasma levels. The results provide further evidence that plasma fluoride concentrations are not homeostatically regulated

[en] Lamellated cortical hyperostosis about the long bones of a premature infant is usually an indication of trauma, congenital infection or Caffey disease. Prostaglandin preparations are now being used for extended periods of time to keep the ductus arteriosus open. As a result of the long-term use of this drug, bilaterally symmetric marked diaphyseal periosteal new bone can be induced. (orig.)

No abstract available