the performance of water flooding can be investigated by using either detail numerical modeling or simulation, or simply through the analytical buckley-leverett (bl) model. the buckley-leverett analytical technique can be applied to one-dimensional homogeneous systems. in this paper, the impact of heterogeneity on water flooding performance and fractional flow curve is investigated. first, a ba...

background: there are no data on the frequency and biochemical expression of the hemochromatosis associated mutations, c282y and h63d, in iranian adult population. this is the first study among iranians that may advocate a screening program. materials and methods: we investigated the frequency of the c282y/h63d hfe gene mutations in a group of 1029 randomly selected iranian blood donors as well...

mouth breathing might not always result in hypoxia, but can contribute to it. the aim of the present study was to determine the effect of mouth breathing on hypoxia. based on a pilot study, 323 patients with mouth breathing were selected. assessment of mouth breathing was based on clinical examination and questionnaires filled out by patients and their companions. the patients were also examine...

Water saturation determination is one of the most important tasks in reservoir studies to predict oil and gas in place needed to be calculated with more accuracy. The estimation of this important reservoir parameter is commonly determined by various well logs data and by applying some correlations that may not be so accurate in some real practical cases, especially for carbonate reservoirs. Sin...

For a fixed graph H, a graph G is H-saturated if there is no copy of H in G, but for any edge e 6∈ G, there is a copy of H in G + e. The collection of Hsaturated graphs of order n is denoted by SAT(n,H), and the saturation number, sat(n,H), is the minimum number of edges in a graph in SAT(n,H). Let Tk be a tree on k vertices. The saturation numbers sat(n, Tk) for some families of trees will be ...

Ellervik and colleagues (1 ) recently reported a positive association between transferrin saturation (TS) and mortality. Several questions arise from this observation: Is the association due to all causes of iron overload or to hereditary hemochromatosis only? Does the study underestimate the true association? And, is mortality due to variation in iron, transferrin, or both? We have relevant da...

Increment threshold intensities were measured for a foveally presented 20msec test flash which fell on a gashed 4.1” white background field. The test field was varied in color (red or green) and size (1” or 0.57”). In one condition (green 0.57” test) the onset asynchrony of the background and test fields was also varied. The increment threshold measurements directly demonstrate saturation of th...

IEEE802.11 standards are the most popular techniques used in wireless network. Distributed Coordination Function (DCF) protocol and Enhanced Distributed Channel Access (EDCA) protocol are used in these standards. EDCA protocol is issued to get over the defect in DCF protocol as it does not support Quality of Service (QoS). The mechanism of EDCA protocol is based on dividing the data into four q...

The purpose of this exposition 1 is to give a simple and complete treatment of Knutson and Tao's recent proof of the saturation conjecture [8]. If λ is a partition of length at most n, let V λ denote the corresponding highest weight representation of GL n (C). Define This set is important in numerous areas besides representation theory. In Schubert calculus it describes when an intersection of ...

OBJECTIVES Near-infrared spectroscopy monitors cerebral oxygen saturation. This parameter parallels jugular venous oxygen saturation and reflects the balance between cerebral oxygen supply and demand. Experience with near-infrared spectroscopy in univentricular physiology is limited. This study explores the relationship between cerebral oxygen saturation, jugular venous oxygen saturation, and o...