a green low-cost and reproducible yeast mediated synthesis of silver nanoparticles is reported. the synthesis is performed at room temperature. x-ray and transmission electron microscopy analyses are performed to ascertain the formation of ag nanoparticles. nanoparticles almost spherical in shape having a size of 6-20 nm are found.

background : due to specific conditions in hospitals such as accumulation, existence of disable persons and patients, different and complex equipment, chemical and infectious substances, flammable materials and ionized radiations, safety precautions is essential to prevent the occurrence of incidents such as fire, electric shock hazard and exposure to excessive levels in hospitals. this was the...

background: the 21st century is faced with increase in challenges of urban population and aging. according to statistics, the old population in the world and in iran is increasing. obviously, their health promotion is the concern of the community and achieving it requires purposeful planning. being healthy means to feel good in social, mental, and physical dimensions (definition by the world he...

background and purpose : there has been no report in which preoperative evaluation of adc for prediction of post therapeutic outcome was presented. the aim of our study was to retrospectively evaluation the use of the apparent diffusion coefficient (adc) for the prediction of malignancy and the outcome of malignant astrocytic tumors. methods: we reviewed mri of 26 male and 14 female patients wi...

background: various frequencies of sperm aneuploidy are reported in sperms of subfertile patients compared to normal individuals. moreover, sperm dna damage is shown to be associated with male infertility. in this study, the rate of dna damage and frequencies of aneuploidy in sperms of subfertile patients was investigated. methods: semen samples were obtained from healthy normal and subfertile ...

the field of nanobiotechnology mainly encompasses with physics, biology, chemistry and material sciences and it develops novel therapeutic nano-scale materials for biomedical, drug delivery, cancer therapy and pharmaceutical applications. silver nanoparticles (agnps) have unique physiochemical, biological and environmental properties which make them useful in a wide range of applications, so ag...

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