Let = ( 1, . . . , N), where i = ±1, and let C( ) denote the number of permutations of 1, 2, . . . , N + 1, whose up–down signature sign( (i + 1)− (i))= i , for i = 1, . . . , N . We prove that the set of all up–down numbers C( ) can be expressed by a single universal polynomial , whose coefficients are products of numbers from the Taylor series of the hyperbolic tangent function. We prove that...

child with down's syndrome is an individual who is suitable and eligible to receive early intervention services. this study aimed to measure the family outcome among parents of down syndrome children, on the impact of receiving early intervention and identify the factors influencing it.a cross sectional was conducted from april 2009 until january 2010 with a total of 125 parents of children wit...

objectives: down syndrome (ds) is the most common multiple congenital anomaly syndrome associated with a developmental disability. children with down syndrome have delay in both motor and mental age. this study carried out to explore relationship between mental and motor age of children with ds. methods: a cross-sectional study was conducted on 60 participants with ds (5 to 7 years old) using r...

introduction: mental retardation, is one of the most common causes for referral to genetic counseling centers, and is one of the greatest challenges in health care services in the world. down syndrome is the most common chromosomal abnormalities in humans. methods: this study performed in medical genetic counseling center of welfare organization in south of iran with high consanguineous marriag...

Growth factors and essential nutrients are key controllers of eukaryotic cell proliferation. In their absence, cells may enter into a quiescent (G0) state. In yeast, nitrogen and/or carbon limitation causes downregulation of the conserved TORC1 and PKA signaling pathways and consequently activation of Rim15, a member of the PAS protein kinase family. Rim15 orchestrates the initiation of the G0 ...

OBJECTIVE To compare the efficacy of seven pyrethroid insecticides for impregnation of mosquito nets, six currently recommended by WHO and one candidate (bifenthrin), under laboratory conditions. METHODS Tests were conducted using pyrethroid-susceptible and pyrethroid-resistant strains of Anopheles gambiae and Culex quinquefasciatus. Knock-down effect, irritancy and mortality were measured us...

Background: There is a general deterioration in sperm quality depending on time postmortem. Refrigeration of the epididymes down to around 5°C is the best strategy to lower this damage and there are many dissim ilarities between species, possibly due to differences on cold shock endurance of epididymal sperm. Our objective was to determine the effect of 5°C and 37°C on goat epididymal sperms mo...