Xanthan gum, a hydrophilic biopolymer with modified release properties, was used to produce directly compressed matrix tablets containing a model drug, Sodium paminosalicylate. Three formulations were prepared, each containing a different calcium dihydrate salt: Calcium Chloride, Calcium Sulfate or Dibasic Calcium Phosphate. The aim of the investigation was to relate the calcium ion content and...

To explore the possibility that vitamin D status regulates sulfate homeostasis, plasma sulfate levels, renal sulfate excretion, and the expression of the renal Na-SO4 cotransporter were evaluated in vitamin D-deficient (D-D-) rats and in D-D- rats rendered normocalcemic by either vitamin D or calcium/lactose supplementation. D-D- rats had significantly lower plasma sulfate levels than control a...

In this paper, we report observations on single internally mixed ammonium sulfate/calcium carbonate microparticles. Deliquescence and efflorescence relative humidities for this mixed system are reported. The slightly soluble CaCO3 has a negligible effect on the deliquescence relative humidity and the concentrationdependent water activities. Mixed particles at 298 K were observed to exist in two...

Antibiotic-loaded beads have been used widely for the treatment of local bacterial infections, but many bacterial pathogens have become resistant to antimicrobial agents. Various antibiotic beads were prepared and studied for their efficacy to treat bacterial infections, using the elution profiles of enrofloxacin from calcium sulfate beads in vitro. The beads were prepared by mixing 1.0 g enrof...

Background: With the present study we introduce a novel and simple biomaterial able to induce regeneration of bone. We theorized that nourishing a bone defect with calcium and with a large amount of activated platelets may initiate a series of biological processes that culminate in bone regeneration. Thus, we engineered CS-Platelet, a biomaterial based on the combination of Calcium Sulfate and ...

Calcium is one of the most limiting factors for growth and reproduction peanut, which ultimately affects pod seed yields. A two-year field experiment was carried out to assess impact five calcium applications, including nano-calcium conventional forms, on growth, leaf nutrient content, yield traits, quality parameters three diverse peanut cultivars (Ismailia-1, Giza-5, Giza-6). The applied appl...

Differential heating curves were used to study the behavior of calcium sulfate at high temperatures. After cooling, the material was examined by means of the petrographic microscope and by study of its X-ray pattern. It was found that the beta-to-alpha transition of calcium sulfate occurs at approximately 1,214° C, and the conclusion of i ts discoverer that the high temperature form is unstable...