introduction: congenital hypothyroidism is the most common cause of mental retardation in the world. the presence of hypothyroidism in fetal is lead to abnormalities in major organs, including nervous system and central skeleton. aim of this study was to investigate epidemiologic situation of neonatal hypothyroidism in ilam province between 2005 -2011. materials and methods: this was a cross-se...

Abstract A new method to study the retardation effects in mesons is presented. Inspired from the covariant oscillator quark model, it is applied to the rotating string model in which a non zero value is allowed for the relative time between the quark and the antiquark. This approach leads to a retardation term which behaves as a perturbation of the meson mass operator. It is shown that this ter...

One hundred and eighty three children suffering from mental retardation were studied over a period of 17 months (December’80 April’82). Mental retardation in 101 cases (5 5.2%) was due to preventable causes i.e. tubercular meningitis, birth trauma, encephalitis, cretinism and kernicterus. Majority of them belonged to lower socio-economic group and had no access to medical facilities, therefore ...

for the first time, a spectrum of morphological abnormalities have been produced in developingmouse embryos (n=50), by injecting (ip) 75 and 100 mg/kg of maternal body weight of a new quinazolinonederivative, 4(3h)quinazolinone-2-propyl-2-phenylethyl(qppe), on days 9, 10 and 11 of gestation.measurements of the length of the crown-rump (cr), weight of body of the embryos and placenta on day 17sh...

The cumulative duration of depressive episodes, and their repetition, has a detrimental effect on depression recurrence rates and the chances of antidepressant response, and even increases the risk of dementia, raising the possibility that depressive episodes could be neurotoxic. Psychomotor retardation could constitute a marker of this negative burden of past depressive episodes, with conflict...

The time course of chromosome movement and decay of half-spindle birefringence retardation in anaphase have been precisely determined in the endosperm cell of a plant Tilia americana and in the egg of an animal Asterias forbesi. For each species, the anaphase retardation decay rate constant and chromosome velocity are similar exponential functions of temperature. Over the temperature range at w...

We study the effect of retardation of gravity in binary pulsars. It appears in pulsar timing formula as a periodic excess time delay to the Shapiro effect. The retardation of gravity effect can be large enough for observation in binary pulsars with the nearly edgewise orbits and relatively large ratio of the projected semimajor axis, x, to the orbital period of the pulsar, Pb. If one succeeds i...

This response argues that Greenspan's comment is basically incoherent, and that the position taken by Leicester and Cooke has unacceptable practical consequences. Greenspan admits that many people with 'mental retardation' lack adult decision-making capacities, but at the same time assumes that they have these very capacities in assigning them freedom rights. Leicester and Cooke consistently ar...