how to cite this article: talebian a, soltani b, sehat m, zahedi a, noorian a, talebian m. incidence and risk factors of neural tube defects in kashan, central iran. iran j child neurol. summer 2015;9(3):50-56. abstract objective neural tube defects (ntds) are the most common congenital defects of central nervous system due to neural tube closure deficit during the third and fourth weeks of ges...

We prove that the incidence chromatic number of the Cartesian product Cm2Cn of two cycles equals 5 when m,n ≡ 0 (mod 5) and 6 otherwise.

This field study assessed whether areas in an alleged haunt and a control site, and active and inactive areas within the haunt site, differed with respect to the presence of contextual variables that might contribute to haunt experiences and exhibited differential incidences of photographic anomalies. Contextual (aesthetic, physical, and structural) variables were measured, and randomized photo...

The concept of the incidence chromatic number of a graph was introduced by Brualdi and Massey (1993). They conjectured that every graph G can be incidence colored with ∆(G) + 2 colors. In this paper, we calculate the incidence chromatic numbers of the complete k-partite graphs and give the incidence chromatic number of three infinite families of graphs.

We use standard asymptotic notation. That is, f(n) = O(g(n)) implies that there exist constants c, n0, such that for any n ≥ n0, we have f(n) ≤ c · g(n). For example, 10n + 1000 = O(n) holds since we can take c = 100 and n0 = 20. Similarly, f(n) = Ω(g(n)) implies that there exist constants c, n0, such that for any n ≥ n0, we have f(n) ≥ c · g(n). Finally, f(n) = Θ(g(n)) implies that both f(n) =...

BACKGROUND AND AIM: Dental anomalies are typically detected in radiographic screening. The present study was conducted with the aim of investigating the dental anomalies found in panoramic radiographs taken from the study population in Ardabil, Iran, in 2015-2016.METHODS: The present study was conducted on 1800 panoramic radiographs obtained from 799 men and 1001 women in the Radiology Departme...

Background: Although testicular tissue cryopreservation could be advantageous for fertility preservation in cancerous children, the possibility of apoptosis incidence should not be ignored. Our aim was evaluation of the apoptosis incidence in mouse testicular tissue after vitrification and short-term culture. Materials and Methods: Testes of 7days old NMRI male mice were isolated, divided and d...

Background: Although testicular tissue cryopreservation could be advantageous for fertility preservation in cancerous children, the possibility of apoptosis incidence should not be ignored. Our aim was evaluation of the apoptosis incidence in mouse testicular tissue after vitrification and short-term culture. Materials and Methods: Testes of 7days old NMRI male mice were isolated, divided and d...

one of the dangerous complications of cataract extractions is vitreous loss. the purpose of this stuy is to evaluate the incidence of vitreous loss and its sepuale while teaching residents at rasoul akram hospital in iran. this study has been conducted on existing records of 730 eyes which were subjectd to extracapsular cataract extractions by 3rd and 4th year, right handed resident of rasoul a...

b a c k g r o u n d & aim: in many studies, the survival of patients with chronic kidney disease who are treated with peritoneal dialysis technique has been considered, while this is possible in peritoneal dialysis  patients  to switch  to another  treatment.  to achieve  more  accurate  estimation  of patient survival is necessary to examine all events. the purpose of this study is to estimate...