a- the goal of this survey is to negotiate the causes of inereasment of psycho-social problems in the adolescence field. we have purposed to evaluate and calegortize 95 persons who were self - refered or refrnal from legal system to crisis - intervention of welfare organization. these persons were classified into three groups through neurologic - psychologic - psychiatric approach: 1- adolescen...

We used random mutagenesis to create 21 point mutations in a highly conserved region of the motor domain of Dictyostelium myosin and classified them into three distinct groups based on the ability to complement myosin null cell phenotypes: wild type, intermediate, and null. Biochemical analysis of the mutated myosins also revealed three classes of mutants that correlated well with the phenotypi...

flood spreading stations were constructed in iran with different objectives such as groundwater recharge and vegetation recovery. accumulation of sediment can be a major problem in flood spreading stations. according to generally accepted theories, floods and salt pollution can reduce gradually the infiltration rate. in order to investigate this issue, 13 flood spreading stations were selected ...

The article presents the results of the research focused on stress factors followed in two groups – top-level athletes and recreational sportsmen. With regard to the methods used in the research the answers obtained in subjective questioning were statistically processed and then the respondents were classified into the zones of stress potential. In the field of frustration tolerance half of the...

introduction: the purpose of this in-vitro study was to investigate the influence of the remaining calcium hydroxide (ch) as an intracanal dressing on the apical sealing ability of three endodontic sealers. materials and methods: sixty-six single and straight canals of recently extracted human permanent maxillary central incisors were used. all canals were prepared and sixty of them were random...