background: the aim of this study is to investigate the effect of vitamin a and c, as the agents that improve wound healing, on the adhesion formation process. materials and methods: sixty male wistar rats were used. they underwent midline laparotomy, for repair of a peritoneal injury, and were then assigned to four groups. group 1 (vitamin a) received 2000 units/kg intramuscular injection of v...

this paper investigates the kinetics of structure h (sh) formation kinetics above and below the structure i (si) formation equilibrium curve at temperatures of between 2â°c and 6â°c. methane was used as a help gas and methylcyclohexane (mch) was used as sh former. it was concluded that in the points above the si formation equilibrium curve, at the first, the si forms, and then converts to sh be...

schizophrenia is a chronic and often debilitating illness which affects about 1% of the world population. some reagents have been used to simulate schizophrenic disorders in laboratory animals, such as amphetamine and ketamine. previous studies have suggested that reactive oxygen species (ros) production, reduced levels of atp, mitochondrial dysfunction and apoptosis are involved in the pathoph...

up flow anaerobic sludge blanket (uasb) reactors have been increasingly used for industrial wastewater treatment. because of existing problems in startup step of these reactors, in this research the startup of a uasb in pilot scale and room temperature condition was studied. the total height of uasb reactor was 270 cm and effective height was 240 cm. diameter of the reactor in lower part was 20...

A screen for mutations affecting flower formation was carried out and several filamentous flower (fil) alleles were identified. In fil mutants, floral primordia occasionally give rise to pedicels lacking flowers at their ends. This defect is dramatically enhanced in fil rev double mutants, in which every floral primordium produces a flowerless pedicel. These data suggest that the FIL and REV ge...

thirteen species of rugose corals, belonging to nine genera are described from the givetian and lower frasnian rocks of thekhoshyeilagh formation in the eastern alborz mountains (northeastern iran). glossophyllum ceratites (goldfuss), glossophyllum sp.,keriophyllum cf. maillieuxi (tsien), pseudozaphrentis sp., temnophyllum imperfectum coen-aubert, temnophyllum occidentale hilland jell, temnophy...

the interaction of bovine serum albumin ( bsa) and egg albumin with water solublephthalocyanine, cobalt (ιι) 4, 4′ , 4′′, 4′′′- tetrasulfophthalocyanine ( cotspc) , has been studiedby the uv- vis method at ph 7.0 and five different temperatures 20, 25, 30, 35 and 40°c. theformation constants have been elucidated by using spectrophotometric titration and computersquad program data refinement. th...

many investigators use bone matrix gelatin for bone induction but it is used rarely for repair of teeth defects. this study was designed to evaluate secondary dentin formation by endochondral bone matrix gelatin (e-bmg) in rabbit. e-bmg was prepared from tibia and femur of 4 deutsche-poland rabbits with average ages of 4-6 months. the prepared e-bmg was implanted in right incisor teeth pulps of...

asmari formation was deposited in the foreland zagros basin (southwest iran). in this research, biostratigraphy related to the asmari formation in north of khorram abad, robat namaki section, is discussed. in the studied stratigraphic section, the asmari formation overlies the shahbazan formation and underlies gachsaran formation and consists of cream to gray medium to thick limestone and marl....

introduction : efforts are being made to improve the efficacy of biomaterials used as bone substitutes for bone regeneration in the oral and maxillofacial region. graft materials have been recently produced in iran; however, studies are required to confirm their efficacy. this study aimed to compare the histomorphometric results of using mineralized allografts produced by the hamanandsaz baft k...