硫酸钙 半水合物

Eur. J. Prosthodont. Restor. Dent. 21(2) , 64-74, (2013)

The aim of this study was to evaluate the effect of the design (extension and adaptation) of a mandibular complete acrylic denture and the use of denture adhesives using a novel in-vitro edentulous model. The model is a highly anatomically accurate replica ba...

J. Contemp. Dent. Pract. 14(1) , 47-50, (2013)

To evaluate and compare the microleakage of various restorative materials used as coronal barriers between endodontic appointments.Eighty extracted human permanent posterior teeth were prepared for standardized access cavities with dimensions of 4 × 4 × 4 mm....

Science 343(6169) , 1244734, (2014)

Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved...

J. Nat. Med. 68(3) , 505-12, (2014)

Gypsum is a crude mineral drug used in the formulas of Japanese kampo medicine and traditional Chinese medicine. The present study aimed to evaluate the anti-allergic effect of byakkokakeishito extract (BKT), which consists of gypsum (natural hydrous calcium ...

Int. J. Prosthodont. 26(2) , 161-3, (2013)

The purpose of this investigation was to measure the accuracy of digital impressions (DIs) compared to conventional impressions (CIs). Using the iTero system, a master cast was scanned to produce stereolithography dies. As a control group, silicone impression...

Environ. Sci. Pollut. Res. Int. 20(12) , 9014-25, (2013)

One of the most important sources of solid waste in the Mediterranean Basin ecosystem originated from the phosphate fertilizer industries, which discharge phosphogypsum (PG) directly into aquatic environments or are stacked on stockpiles. The present study in...

Phys. Chem. Chem. Phys. 15(6) , 1956-65, (2013)

Dissolution processes at single crystal surfaces often involve the initial formation and expansion of localized, characteristic (faceted) etch-pits at defects, in an otherwise comparatively unreactive surface. Using natural gypsum single crystal as an example...

Am. J. Orthod. Dentofacial Orthop. 144(1) , 147-55, (2013)

Gray level is the range of shades of gray in the pixels, representing the x-ray attenuation coefficient that allows for tissue density assessments in computed tomography (CT). An in-vitro study was performed to investigate the relationship between computed gr...

J. Hand Surg. Am. 38(1) , 104-9, (2013)

Enchondroma of the hand with a pathologic fracture is generally treated by tumor curettage and bone grafting after the fracture has healed. However, delayed surgery postpones definitive diagnosis and prolongs the period of disability. We have treated patholog...

Sci. Rep. 2 , 880, (2012)

Magnesian limestone is a key construction component of many historic buildings that is under constant attack from environmental pollutants notably by oxides of sulfur via acid rain, particulate matter sulfate and gaseous SO(2) emissions. Hydrophobic surface c...