In this paper, estimation using we discuss the errors in selectivity the multilevel multidimensional file structure. We rst analyze the cause P rid file(MLGF), a of the estimation errors, and then investigate five factors affecting the accuracy of estimation: (1) the data distrzbution in a region, (2) the number of records stored in the MLGF, (3) the page size, (4) the query region size, and (5...

the dentate gyrus of hippocampus has long been considered as a focal point for studies on mechanisms responsible for the development of temporal lobe epilepsy (tle). change in intrinsic properties of dentate gyrus granule cells (gcs) has been considered as an important factor responsible in temporal lobe seizures. in this study, we evaluated the intrinsic properties of gcs, during acute phase o...

up flow anaerobic sludge blanket (uasb) reactors have been increasingly used for industrial wastewater treatment. because of existing problems in startup step of these reactors, in this research the startup of a uasb in pilot scale and room temperature condition was studied. the total height of uasb reactor was 270 cm and effective height was 240 cm. diameter of the reactor in lower part was 20...

Starch structure strongly influences starch physicochemical properties, determining the end uses of starch in various applications. To produce starches with novel structure and exploit the mechanism of starch granule formation, an (engineered) 4, 6-α-glucanotransferase (GTFB) from Lactobacillus reuteri 121 was introduced into two potato genetic backgrounds: amylose-containing line Kardal and am...

Sticky viscous prey capture threads form the spiral elements of spider orb-webs and are responsible for retaining insects that strike a web. These threads are formed of regularly spaced aqueous droplets that surround a pair of supporting axial fibers. When a thread is flattened on a microscope slide a small, opaque granule can usually be seen within each droplet. These granules have been though...