peppermint (mentha piperita l.) from lamiaceae family is one of the most important medicinal plants, used in food, sanitary and cosmetic industries. a field experiment was carried out in ferdowsi university of mashhad in 2010-2011 to evaluate the effects of three irrigation levels (100, 80 and 60 percent of water requirements calculated by evaporation pan class a) and two mulch types (black pla...

Introduction: INTRODUCTION Posterior spinal fusion is a well-known, procedure in spinal surgery. The golden standard to achieve fusion remains autologous bone grafting. Although the exact mechanism of bone formation after grafting is unclear, there are some clues on the processes involved. New bone is originating and progressing from the decorticated processes by (a combination of ) osteoconduc...

Bone is an anistropic material, the drilling of which is an essential part of internal ®xation in orthopaedic and trauma surgery. Some research has been carried out into the drilling of bone, but there are no de®nitive recommendations available on the most suitable drill shape or on the optimum drilling speed that should be used in surgical practice. The heat generated during the drilling of bo...

SIMMONS, DAVID J., AND GEORGE NICHOLS, JR. Diurnal periodicity in the metabolic activity of bone tissue. Am. J. Physiol. LO(Q): 411-418. 1966. -Studies of the metabolism of bone cells in the metaphyses of the rat femur (distal) and tibia (proximal) have established that collagen synthesis and new bone formation is diurnally regulated. Significantly greater amounts of glycine-Q-Cl4 were initiall...

The present study investigated the coupling effect of biodegradation and media filtration in treating hydrocarbon contaminated water. The study recorded reductions in total petroleum hydrocarbon, total dissolved solids, turbidity and microbial load. The study was essentially a simulated pump and treat process that involved the pumping of hydrocarbon contaminated water for treatment in a locally...

In order to understand the mechanisms of poor osseointegration following dental implants in type 2 diabetics, it is important to study the biological properties of alveolar bone osteoblasts isolated from these patients. We collected alveolar bone chips under aseptic conditions and cultured them in vitro using the tissue explants adherent method. The biological properties of these cells were cha...

A case is reported of a 66-year-old woman who could not use a conventional, full upper denture because of a gag reflex. In the maxillary alveolar ridge, restoration was performed on a moderately atrophied, edentulous anterior area and a small defect in the right-side posterior area. In the mandibular alveolar ridge, restoration was performed on a moderate osseous defect in each molar area resul...

A prime pathogenic agent associated with periodontitis is lipopolysaccharide (LPS) derived from Porphyromonas gingivalis. This study investigated the effects of P. gingivalis LPS on osteoblasts, which are responsible for alveolar bone repair. Bone cells were obtained from explants of rat alveolar bone chips and cultured with 0-200 ng ml(-1) of P. gingivalis LPS. Porphyromonas gingivalis LPS sig...

scaling (that is, Dennard scaling) provided three benefits: doubling of integration capacity to deliver twice the number of transistors per unit area every two years at constant price, increased transistor performance, and reduced energy per transistor. With the steady erosion of the latter two benefits, the low-hanging fruit for performance increase has been to exploit integration capacity via...