in this study cellular phosphatase activity, referred to as enzyme developed color (edc) assay, was used for an in vitro assessment of cell proliferation and cytotoxicity. optimum conditions were established and found to be 10 x103 cells / well at 37°c and 60 min incubation (for developing color). under the same conditions a direct correlation between optical density (00) and cell number was ob...

background: pentachlorophenol (pcp) is one of the most fungicides and pesticides. acute and chronic poisoning from pcp may be occurred by dermal absorption, and respiration or ingestion. with respect to health and environmental effects of pcp, many methods were considered regarding its removal. microwave assisted other methods are environmental friendly, safety, and economical method, consequen...

objective: different techniques have been suggested for the repair of bone defects at the injured sites. use of biomembranes, or application of plasma rich in growth factor (prgf) at the site of proliferation of osteoblasts are among the suggested techniques. the current study aimed to compare the biocompatibility of human periodontal ligament fibroblasts (hplf) cultured on hypro-sorb f, perica...

biosolids must be stabilized in order to reduce odors, which have been noted as a major concernwith respect to alkaline stabilization. stabilization is designed to address potential putrefaction processes,odiferous releases and vector attraction concerns. also, most alkaline processes are open systems in whichtemperature and mixing are more difficult to control, and factors such as increased pr...

background: bone marrow mesenchymal stem cells (mscs) are one of the undifferentiated multipotential cell sources of human body. methods: mscs have the capacity to form a variety of cell types, especially chondrocytes and osteocytes. learning about responses of mscs to external milieu and chemical factors such as ph could recommend new approaches for preparation of suitable scaffolds for bone a...