منابع مشابه
Pore before seal
Kinetochores hold on with a ring complex that links a budding yeast kinetochore to a microtubule (MT) forms a ring around the MT, based on structures from two groups. The ring may help kinetochores to keep hold of an MT, even as the MT shrinks towards the spindle pole during anaphase. Stephen Harrison (Harvard Medical School, Boston, MA) and Peter Sorger (MIT, Cambridge, MA) are hoping to analy...
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Many animals respond to predation risk by forming groups. Evolutionary explanations for group formation in previously ungrouped, but loosely associated prey have typically evoked the selfish herd hypothesis. However, despite over 600 studies across a diverse array of taxa, the critical assumptions of this hypothesis have remained collectively untested, owing to several confounding problems in r...
متن کاملX-ray microtomography application in pore space reservoir rock.
Characterization of porosity in carbonate rocks is important in the oil and gas industry since a major hydrocarbons field is formed by this lithology and they have a complex media porous. In this context, this research presents a study of the pore space in limestones rocks by x-ray microtomography. Total porosity, type of porosity and pore size distribution were evaluated from 3D high resolutio...
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SOIL pore space and its intrinsic characteristics such as surface area, roughness, tortuosity, and connectivity are probably the most important factors controlling water and solute movement in soils. Interaggregate porosity is the result of the arrangement of the soil aggregates. These aggregates are composed of subunits, of which clay minerals and other colloids are the main components. The wa...
متن کاملSolubility of Anhydrite, CaSO4, in NaCl–H2O Solutions at High Pressures and Temperatures: Applications to Fluid–Rock Interaction
Anhydrite solubility in H2O–NaCl solutions was measured at 6–14 kbar, 600–800 C and NaCl mole fractions (XNaCl) of 0–0 3 in piston–cylinder apparatus. Solubilities were determined by weight changes of natural anhydrite in perforated Pt envelopes confined with fluid in larger Pt capsules. In initially pure H2O at 10 kbar and 800 C, CaSO4 concentration is low (0 03molal), though much larger than ...
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ژورنال
عنوان ژورنال: Journal of the Sedimentological Society of Japan
سال: 1998
ISSN: 1342-310X,1882-9457
DOI: 10.4096/jssj1995.48.1