Statement of Problem: Previous experiences and clinical observations indicate that enamel hypoplasia and hypocalcification of first permanent molars, among infants born in Cessarian Section Delivery (C/S) is more common than those born in Normal Vaginal Delivery (NVD). Moreover, the first permanent molar is the only tooth that its "cusp tip calcification" starts exactly at the time of delivery....

Infertility in the world today is no longer an inescapable problem, and doctors have been able to solve the problem of infertile treatment in a coherent way. The birth of children by artificial insemination is in the following ways: 1) Insemination by husband’s sperm with egg inside the uterus or out of it for fertilization, and 2) Inoculation by another sperm (stranger-donor) inside or outside...

abstract the present research is prepared to study the culture of tea consuming among iranian. the case group which was statistically used for this study was people of lahijan , about four hundred wich were chosen according to their age , gender , education and occupation , randomly selected to fill the questionnaire . then the data collected through the questionnaire was analyzed according ...

ii abstract the legend of human being’s refulgence was distorted completely in the age of modernity. this new age, had some drastic negative effects, besides its positive qualities. one significant negative effect of it was the emergence of neurosis in human beings. aldous huxley’s brave new world was one of the novels of the 02 th century that contained the prophecy of criticizing ...

Background & objective: but its etiology is unknown. Based on deficiency of epidemiological studies, this studyFamily and genetic factors are effective on incidence of external hydrocephalusaimed to determine the demographic features of children with external hydrocephalus.Methods: referred to Taleghani tertiary hospital during 2009-2011 were assessed. Inclusion criteriaIn this retrospective de...

1.0 overview it seems that grammar plays a crucial role in the area of second and foreign language learning and widely has been acknowledged in grammar research. in other words, teaching grammar is an issue which has attracted much attention to itself, and a lot of teachers argue about the existence of grammar in language teaching and learning. this issue will remind us a famous sentence f...

COVID-19 pandemic and quarantine have led to many problems for families. In this regard, the purpose of this study was to identify the challenges and strategies of mothers with pre-school and primary school children during the coronavirus epidemic. In order to do this phenomenological study and based on the data saturation principle, 21 mothers having pre-school and primary school children in T...