the matrix functions appear in several applications in engineering and sciences. the computation of these functions almost involved complicated theory. thus, improving the concept theoretically seems unavoidable to obtain some new relations and algorithms for evaluating these functions. the aim of this paper is proposing some new reciprocal for the function of block anti diagonal matrices. more...

Biodegradable polymer-ceramic composites offer significant potential advantages in biomedical applications where the properties of either polymers or ceramics alone are insufficient to meet performance requirements. Here we demonstrate the highly tunable mechanical and controlled drug delivery properties accessible with novel biodegradable nanocomposites prepared by non-covalent binding of sili...

s of the 44th National Symposium of the American Vacuum Society, San Jose, CA, 20–24 Oct. 1997, p. 215. S.-J. Wang, I.-S. Jin, and H.-H. Park, Surf. Coat. Technol. 100–101, 59 ~1998!. M. Schaepkens, N. R. Rueger, J. J. Beulens, X. Li, T. E. F. M. Standaert, P. J. Matsuo, and G. S. Oehrlein, J. Vac. Sci. Technol. A 17, 3272 ~1999!. H.-H. Park, M.-H. Jo, H.-R. Kim, and S.-H. Hyon, J. Mater. Sci. ...

Nanocrystalline thin film of Na0.1V2O5.nH2O xerogel obtained by sol gel synthesis was used as gas sensor. Gas sensing properties of different gases such as hydrogen, petroleum and humidity were investigated. Applying XRD and TEM the size of the nanocrystals is found to be 7.5 nm. SEM shows a highly porous structure with submicron meter-sized voids present throughout the sample. FTIR measurement...

INTRODUCTION Autograft has been the "gold standard" for orthopedic bone grafting applications, but with some clinical challenges. Here we present the rationale and clinical outcomes supporting the use of a bone substitute material that consists of a mixture of two calcium phosphates (HA and ß-TCP), which are integrated into a silicon xerogel matrix, promoting nanocrystalline apatite layers on t...

BACKGROUND The aim of the current study was to measure and compare the effect of various biomaterials for the healing of osteoporotic bone defects in the rat femur using 18F-sodium fluoride dPET-CT. MATERIAL AND METHODS Osteoporosis was induced by ovariectomy and a calcium-restricted diet. After 3 months, rats were operated on to create a 4-mm wedge-shaped defect in the distal metaphyseal fem...