نتایج جستجو برای: infiltration depth
تعداد نتایج: 212662 فیلتر نتایج به سال:
AIM To retrospectively evaluate the factors that influence long-term outcomes of duodenal papilla carcinoma (DPC) after standard pancreaticoduodenectomy (SPD). METHODS This is a single-centre, retrospective study including 112 DPC patients who had a SPD between 2006 and 2015. Associations between serum levels of CA19-9 and CEA and various clinical characteristics of 112 patients with DPC were...
light is never being distributed homogeneously and it forms a gradient over biomass. the unidirectional nature of light gives rise to a vertical gradient of light intensity as a function of depth. the maximum depth of the light zone suitable for phytoplankton photosynthesis is designated as the euphotic depth. this study was designed to test the hypothesis of mixing depth of phytoplankton and i...
the manning roughness coefficient is an important parameter in the design and evaluation of furrow irrigation. despite its importance, estimation of this parameter for surface irrigation is very difficult, particularly in furrow irrigation. in this study, an evalue model was used to estimate the manning roughness coefficient in furrow irrigation. the model was based on volume balance and develo...
The Beerkan infiltration experiment is carried out by inserting the ring a short depth into soil and establishing positive head of water on surface for at least part run. Nevertheless, data are analyzed assuming fully unconfined process (ring insertion depth, d = 0 cm) null ponded (H cm). influence an 2 h sampled every minute was tested in this numerical investigation. Five soils varying from s...
Soil conventional tillage has been associated with deterioration of its characteristics, while organic farming promoted as an approach to conserve a favorable soil environment. With the interest in nominating strategies without ploughing for maintaining long-term quality and subsequently increasing yields, this study set identify if how conservation practices management (OM) do improve physical...
A slow-moving landslide is a mass movement that has major societal impact because of its large sediment volume. The principal cause landslides increased pore water pressure in deep aquifer close to the slip surface. Elucidation behavior groundwater critical stability analysis landslides. Shallow groundwater, which flows through regolith, can undergo vertical infiltration and thus make contribut...
The vadose zone plays a significant role during artificial recharge via the infiltration basin. Its thickness, lithology, heterogeneity, among others greatly affect efficiency. main objective of this research is to establish and impacts basin features factors on water distributions. In work, an ideal conceptual model was considered, mathematical models were built using HYDRUS (2D/3D) software p...
Interfacial Stresses of Thermal Barrier Coating with Film Cooling Holes Induced by CMAS Infiltration
To obtain high gas turbine efficiency, a film cooling hole is introduced to prevent the destruction of thermal barrier coating systems (TBCs) due hot gases. Furthermore, environmental calcium-magnesium-aluminum-silicate (CMAS) particulates plug and infiltrate TBCs form CMAS-rich layer, which results in phase transformations significant modifications thermomechanical properties that impact durin...
plant cover is one of the most important factors affecting infiltration rate of water into the soil and decreasing runoff. distribution of plants in arid and semi-arid areas is almost patchy and form different patterns. one of the fascinating patterns is ring-shaped growth pattern. ring patterns of varying size are formed by clonally reproducing grasses, sedges and even shrubs growing in resour...
Although the immune system evolved to fight infections, it may also attack and destroy solid tumors. In most cases, tumor rejection is initiated by CD8(+) cytotoxic T lymphocytes (CTLs), which infiltrate solid tumors, recognize tumor antigens, and kill tumor cells. We use a combination of two-photon intravital microscopy and immunofluorescence on ordered sequential sections to analyze the infil...
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