The Gurpi Formation constitutes the source rock for petroleum in the oil-rich South Iranian Basin.Gurpi Formations is well distributed along Zagros Foreland Basin particularly in the north west of the Zagros (Lorestan Province). For Microbiostratigraphy and Paleobathymetric studies of the Gurpi Formation in the central part of Lorestan two stratigraphic sections including Sultan and Amiran sect...

Kreuz, Leo E. (The Johns Hopkins University School of Medicine, Baltimore, Md.), and Allan H. Levy. Physical properties of chick interferon. J. Bacteriol. 89:462-469. 1965.-The sedimentation coefficient, diffusion coefficient, and molecular weight of chick-embryo interferon were determined by zone centrifugation and equilibrium sedimentation in cesium chloride density gradients, and by chromato...

The putative Ca(2+)-channel blocker LaCl3 prevented the gravitropic bending of cut snapdragon (Antirrhinum majus L.) spikes (S. Philosoph-Hadas, S. Meir, I. Rosenberger, A.H. Halevy [1996] Plant Physiol 110: 301-310) and inhibited stem curvature to a greater extent than vertical and horizontal stem elongation at the bending zone. This might indicate that LaCl3, which modulates cytosolic Ca2+, d...

In the ultracentrifuge, normal human serum shows, in addition to the lipoproteins, three distinct components with sedimentation rates of approximately 4, 7, and 19 Svedberg units (1, 2). Other materials known to be present are obscured by the high concentrations of these major substances and the high diffusion spreading of the boundaries. For example, Edsall (3) has reported a number of additio...

Cell suspensions of the transplantable Furth murine mast cell tumor were separated both by velocity sedimentation in an isokinetic gradient and by isopyknic sedimentation. Prior to separation, the suspension of tumor cells contained 60.3+/-13.1% (S.D.) malignant mast cells, 9.8+/-10.4% lymphocytes, 4.3+/-2.1% granulocytes, 1.7+/-1.9% macrophages, 0.6+/-0.4% unidentified cells, and 22.8+/-8.5% r...

[1] The effect of cloud droplet sedimentation on the entrainment rate and liquid water path of a nocturnal nondrizzling stratocumulus layer is examined using largeeddy simulations (LES) with bulk microphysics. In agreement with a prior study by Ackerman et al. (2004), sedimentation is found to decrease entrainment rate and thereby increase liquid water path. They suggested this is due to reduct...

[1] Sediment flux from rivers to oceans is the fundamental driver of fluvio-deltaic morphodynamics and continental margin sedimentation, yet sediment transport across the river-to-marine boundary is poorly understood. Coastal rivers typically are affected by backwater, a zone of spatially decelerating flow that is transitional between normal flow upstream and the offshore river plume. Flow dece...

Seasonal shifts in calcium carbonate solution equilibria in the limnetic zone of Lake Constance were documented between 1981 and 1983. Except during mixing times, lake water was supersaturated with respect to calcite; epilimnetic supersaturation maxima were closely related to changes in pH. Sedimentation of calcium from the lower boundary of the euphotic zone to the lake bottom was also assesse...

Neutron stars, with their strong surface gravity, have interestingly short timescales for the sedimentation of heavy elements. Recent observations of unstable thermonuclear burning (observed as X-ray bursts) on the surfaces of slowly accreting neutron stars (< 0.01 of the Eddington rate) motivate us to examine how sedimentation of CNO isotopes affects the ignition of these bursts. We further es...