This study investigated the photocatalytic behaviors for the nanocomposite of TiO2 P25 and Semnan natural zeolite in the decomposition of tetracycline under visible light in an aqueous solution. The structural features of the composite were investigated by a series of complementary techniques that included X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), scanning elec...

hyalomma dromedarii (h. dromedarii) is a very characteristic tick with a cosmopolitan distribution, which is closely associated with camels. it is well adapted to extreme dryness of habitat and to camel hosts. in this study, we studied rural husbandry of one-humped camels (dromedaries) in a village in south-west of semnan (biabanak). a total of 163 ticks (94 adults and 67 nymphs) were found on ...

The evaluation of vegetation covers using conventional methods is difficult over arid areas due to several reasons such as lack of the suitable roads to these regions. Moreover, this task is time-consuming. For these reasons, remote sensing has been considered as an economic alternative for conventional field work. In this study, the feasibility of using IRS images in vegetation cover evaluatio...

essay on jurisprudence and possible effects of the condition of the dowry *akram sayad **maryam aqai bejestani abstract dowry or mahr one of the financial effects of marriage that couples are required to pay it. high dowry payments and the subsequent imprisonment of many problems facing society and the families of the couple. one of the ways to avoid the dowries of the organization for registra...

Gabapentin seems to be a safe and well tolerated medication for treating heroine dependence. This study examined the efficacy of gabapentin for relieving withdrawal-related pain due to heroin use. Sixty men were recruited from an inpatient psychiatric ward of Fatemieh hospital in Semnan and randomized to receive either placebo (n = 30) or gabapentin (1800 mg/day) (n = 30) for 7 days. Subjective...

We determined the prevalence of smoking among 320 male medical sciences students (174 studying for a medical degree, 95 a bachelor degree and 51 a associate degree) in Semnan, Islamic Republic of Iran. A self-administrated, anonymous questionnaire was used. The prevalence of smoking was 14.4%; 45.6% of the smokers started smoking between the ages of 18 and 20 years, 43.5% starting at university...