background: this study is performed to reveal most common species and subspecies of leptospires that are main causes of hu­man leptospirosis in guilan, northern province of iran. methods: we performed igm-elisa and mat on 282 blood samples from patients who attended to 3 hospitals in the flat area of guilan province with clinical symptoms consisted with leptospirosis.  all specimens with titers...

background leptospirosis is a systemic infectious disease caused by pathogenic bacteria belonging to the species of leptospira, it is considered to be the most common zoonosis in the world. this is a serious and sometimes fatal infection which is transmitted from animals to humans by entering the digestive tract or mucosal membrane. within the initial 10-12 day period, the patient may experienc...

the ultraviolet-visible (uv) spectra of toluene, ortho-bromo and para-bromo toluene in different solvents have been studied. the electric dipole moments and polarizabilities in the molecular excited electronic states were determined. it was found that the electric dipole moments for the excited states (µ*) and the ground states (µ) of these compounds are equal, and the change in dipole moment i...