Chromatin diminution is the programmed elimination of specific DNA sequences during development. It occurs in diverse species, but the function(s) of diminution and the specificity of sequence loss remain largely unknown. Diminution in the nematode Ascaris suum occurs during early embryonic cleavages and leads to the loss of germline genome sequences and the formation of a distinct genome in so...

I T has been reported earlier (S. BEERMANN 1959) that the primordial somatic cells in some copepods become different from the germ line cells by a process of “chromatin diminution” similar to that which occurs in Ascaris (BOVERI 1899). A good example is Cyclops strenuus diuulsus. As observed by HACKER (1894) and by STICH (1954) the mitotic spindles in the 5th cleavage division of this species c...

Pavlovian conditioning research has shown that unconditioned responses (UCR) to aversive unconditioned stimuli (UCS) are reduced when a UCS is predictable. This effect is known as UCR diminution. In the present study, we examined UCR diminution in the functional magnetic resonance imaging (fMRI) signal by varying the rate at which a neutral conditioned stimulus (CS) was paired with an aversive ...

spherical equivalent (se) has not been linked to increased cardiovascular morbidity. methods: 132 hungarian twins (age 43.3±16.9 years) underwent refraction measurements (huvitz mrk-3100 premium autorefractokeratometer) and oscillometry (tensiomed arteriograph). results: heritability analysis indicated major role for genetic components in the presence of right and left se (82.7%, 95%ci, 62.9 to...

In this paper, we present a model for computing the cost of implementing Banyan networks. We limit our interest in Banyan networks which are used in ATM switching fabrics and are build in VLSI. The cost is given as a function of the characteristics of the network (i.e. length of buffers, speed of links, etc.). It is well-known that the implementation cost must be related to the performance of t...

Energy expenditure at rest and in response to a meal and to an infusion of noradrenaline was measured in 12 lactating women and compared with that in seven bottle feeding women and seven non-pregnant, non-lactating controls. The energy response of the lactating women was remeasured after lactation stopped. During lactation the resting metabolic rate was unaltered but there was a reduced respons...

Le couplage entre le système nerveux central et autonome durant sommeil a fait l’objet de plusieurs études notamment lors phases spécifiques comme les micro-éveils. Cependant, mécanismes par lesquels ces 2 systèmes sont associés, restent encore non élucidés. L’objectif ce travail était d’étudier liens temporels micro-éveils variations cardiorespiratoires associées. Une polysomnographie sieste é...