background: research project risks are uncertain contingent events or situations that, if transpire, will have positive or negative effects on objectives of a project. the management of health and safety at work (mhsw) regulations 1999 require all employers and the self-employed persons to assess the risks from their work on anyone who may be affected by their activities. risk assessment is the...

immune genes of the major histocompatibility complex (mhc) are among the most polymorphic genes in the vertebrate genome. due to their polymorphic nature, they are often used to assess the adaptive genetic variability of natural populations. this study describes the first molecular characterization of 13 partial mhc class iib sequences from three european ranid frogs.  the utility of previously...

background: phic31 integrase is a dna site-specific recombinase integrates dna into the chromosomes between the two sites of attb and attp. several pseudo attps have been identified in mammalian genomes with critical features for long-term expression of transgene. in this manuscript, we report a novel intrinsic pseudo attp site named chol1 in the chinese hamster genome implementing an inverse p...

during the croatian homeland war in 1991, the capacitor batteries of the zadar electric powersubstation (ts 110/35 kv) were damaged, resulting in the severe pollution of the soil with polychlorinatedbiphenyls (pcbs). due to porosity of karstic soil pcbs represent great environmental and human health risksthat need some action. the polluted soil was collected and an experimental field was formed...

the effect of underground cavities in site seismic response was studied over the subway tunnels that are under construction in the city of karaj, using ambient noise measurements as well as numerical modeling. the idea for this research comes from the observation of differences in experimental site transfer function, calculated on more than 100 locations of the city, for the areas near the unde...

introduction: cesarean surgical site infection (ssi) occurs in 3% to 17% of patients who undergo cesarean delivery. ssis increase postcesarean maternal morbidity and health costs and cause longer hospital stays. therefore, we designed a study to assess the effects of normal saline and cefazolin irrigation on the incidence of ssis. methods: in this study, 200 participants were divided into 3 gro...

it was shown that permethrin resistance in adult anopheles stephensi is due to at least three separate mechanisms. cytochrome p-450s and esterases are responsible for two-thirds of the 8-fold enhanced tolerance of the dub-apr resistant strain as compared with a sensitive strain, ind-s. it was postulated that target site insensitivity is also involved. to test this hypothesis, we conducted a neu...

geographic information systems (gis) are one of the fastest growing computer-based technologies of past two decades, yet, full potential of this technology in construction has not been realized. based upon gis capabilities, construction site layout is one of the areas that gis could be applied. the layout of temporary facilities (tfs) such as warehouses, fabrication shops, maintenance shops, co...