A group of DNA-binding proteins from the soluble extract of newborn rat epidermis have been separated by chromatography using DNA-cellulose columns. The electrophoretogram of the DNA-binding proteins eluted from a single stranded DNA-cellulose column shows five major proteins of molecular weights ranging between 25K to 40K. Both the epidermal protein filaggrin and most keratins, except two high...

The low-temperature surface diffusion of isolated Cr adatoms on Au(111) has been determined using nonperturbing x rays. Changes in the x-ray magnetic circular dichroism spectral line shape together with Monte Carlo calculations demonstrate that adatom nucleation proceeds via quantum tunneling diffusion rather than over-barrier hopping for temperatures <40K. The jump rates are shown to be as muc...

We investigate the production efficiency of ultracold molecules in bosonic 85Rb and fermionic 40K when the magnetic field is swept across a Feshbach resonance. For adiabatic sweeps of the magnetic field, our novel model shows that the conversion efficiency of both species is solely determined by the phase space density of the atomic cloud, in contrast with a number of theoretical predictions. I...

Telah dilakukan penelitian tentang penentuan aktivitas spesifik radionuklida alam pada sumber air panas di Nagari Pariangan Sumatera Barat. Tujuan ini untuk mengetahui 222Rn, 226Ra,232Th dan 40K. Penelitian menggunakan sampel yang diambil dari tiga berbeda. Aktivitas diukur dua alat yaitu Durridge Rad7 Radon Detector dengan protokol WAT250 222Rn spektrometer gamma Hasil diperoleh berdasarkan pe...

introduction foodstuffs are known to contain natural and artificial radionuclides. determination of radionuclide concentration is of great significance for the protection of human health. the main objective of the present study was the quantification of radionuclides in tea samples, cultivated in guilan province in north of iran. materials and methods the activity concentrations of 226ra, 232th...

gamma-rays emitted from the ground surface relate to the primary mineralogy and geochemistryof the bedrock, and the secondary weathered materials. this information can contribute significantly to anunderstanding of the geochemical and pedogenetic history of a region. the main aim of this paper was to study the relationship between ground gamma-ray data and basement geochemistry in the lese catc...

Background: Since 40K is the most important natural radionuclide in the environment, its concentration was measured for all milk and milk powder samples consumed in Tehran-Iran. Milk was chosen, since because it is a reliable indicator of the general population intake of certain radionuclide, and many environmental programs have been applied for its safety. Materials and Methods: Measu...