نتایج جستجو برای: secondary permeability
تعداد نتایج: 351516 فیلتر نتایج به سال:
We discuss the translocation of inhaled asbestos fibers based on pulmonary and pleuro-pulmonary interstitial fluid dynamics. Fibers can pass the alveolar barrier and reach the lung interstitium via the paracellular route down a mass water flow due to combined osmotic (active Na+ absorption) and hydraulic (interstitial pressure is subatmospheric) pressure gradient. Fibers can be dragged from the...
klinkenberg permeability is an important parameter in tight gas reservoirs. there are conventional methods for determining it, but these methods depend on core permeability. cores are few in number, but well logs are usually accessible for all wells and provide continuous information. in this regard, regression methods have been used to achieve reliable relations between log readings and klinke...
[1], published in the previous issue of Critical Care, about our study [2]. We agree with his pathophysiologybased view of the diagnosis of acute respiratory distress syndrome (ARDS). In regard to his fi rst concern, we excluded 14 patients, who were judged to have respiratory failure secondary to sepsis-induced increased pulmonary vascular permeability, because owing to hypovolemia their value...
stress waves contain useful information about the properties of porous materials; they can be recovered through different non-destructive testing methods such as crosswell, vertical seismic profile, borehole logging as well as sonic tests. in all these methods, it is crucial to assess the effects of frequency on wave attributes including velocity and intrinsic attenuation. the dependency of per...
This study aims to determine physical and clay mineral properties of soils how they affect the occurrence erosion in IAIN Campus Ambon. The results indicated that two soil profiles shows a variety properties. largest distribution particle density is 2.63 at layer P2L3 smallest 2.26 P1L1, pore 60.12% P2L1 29.36% P1L3, while pores ratio 1.51% 0.42% P1L3. porosity reflects level ability pass water...
P2X7 is a ligand-gated ion channel which is activated by ATP and displays secondary permeability characteristics. The mechanism of development of the secondary permeability pathway is currently unclear, although a role for the hemichannel protein pannexin-1 has been suggested. In this study we investigated the role of pannexin-1 in P2X7-induced dye uptake and ATP-induced IL-1β secretion from hu...
در این تحقیق، نوع مرگ سلولی ناشی از تاثیر پلاتین در رده سلولی mcf-7 که یک رده سرطان پستان انسان است، توسط روش میکروسکوپ الکترونی انتقالی تعیین شد.سلولهای mcf-7 در دو گروه شاهد و آزمایشی کشت داده شدند. گروه آزمایشی با دوز 1 میکرومول از داروی سیس پلاتین و گروه شاهد با محلول نرمال سالین تیمار شد. 48 ساعت بعد، سلولهای چسبیده و کنده شده در دو گروه شاهد و آزمایشی جمع آوری و جهت مطالعه در میکر...
BACKGROUND Acute respiratory distress syndrome (ARDS) is characterized by the increased pulmonary permeability secondary to diffuse alveolar inflammation and injuries of several origins. Especially, the distinction between a direct (pulmonary injury) and an indirect (extrapulmonary injury) lung injury etiology is gaining more attention as a means of better comprehending the pathophysiology of A...
The permeability of the preform composite materials used in liquid molding processes such as resin transfer molding and structural reaction injection molding is a complex function of weave pattern and packing characteristics. The development of tools for predicting permeability as a function of these parameters is of great industrial importance. Such capability would speed process design and op...
Abstract. The forward stratigraphic simulation approach is applied to predict porosity and permeability distribution. Synthetic well logs from the model served as secondary data control representation in reservoir model. Building a that fits at different locations comes with high levels of uncertainty. Therefore, it critical generate an appropriate framework guide lithofacies associated porosit...
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