نتایج جستجو برای: water measurement structure
تعداد نتایج: 2420828 فیلتر نتایج به سال:
When using point measurement for environmental or sediment laden flows, there is well-recognised risk not having aligned measurements that causes misinterpretation of the measured velocity data. In reality, these kinds mismeasurement mainly happen due to bed orientation caused by complexity its determination in natural especially bedload rough flows. This study proposes a novel realignment meth...
Measurement of polymerization degree of condensed phosphates was examined by solid-state NMR. Broad peaks of the NMR of endand middle-PO4 groups of condensed phosphates were observed at about 1 and -20 ppm, respectively. The NMR. peak area ratio (Ro) of middle-PO4 group to end-PO4 group has the following relation with the polymerization degree (n) of polyphosphate: Ro (middle-PO4/end-PO4) = (n-...
This paper aims to develop three-dimensional measurement method based on digital holographic microscopy (DHM) to investigate the droplet-based microfluidic phenomena. The advantage of DHM is the direct measurement method for the three-dimensional measurement target with single camera based on analysis of phase information of holographic images. Furthermore, we tried to measure two important inf...
the focus of this paper is to consider the compressed sensing problem. it is stated that the compressed sensing theory, under certain conditions, helps relax the nyquist sampling theory and takes smaller samples. one of the important tasks in this theory is to carefully design measurement matrix (sampling operator). most existing methods in the literature attempt to optimize a randomly initiali...
Electric detection using a nanocomponent may lead to platforms for rapid and simple biosensing. Sensors composed of nanotips or nanodots have been described for highly sensitive amperometry enabled by confined geometry. However, both fabrication and use of nanostructured sensors remain challenging. This paper describes a dendritic nanotip used as an amperometric biosensor for highly sensitive d...
The design, simulation, fabrication, and measurement of two structures of metamaterial absorbers (MA) is investigated at microwave frequency in this paper. By stacking of one layer structure on the top of each other, a two-layered structure is generated. The unit cell at each layer consisting of two sets of various circular and square patches are designed so that the structure exhibit quad band...
Quantitative description of the spatial variability of soil hydraulic characteristics is crucial for planning, management and the optimum application. Field measurement of infiltration is very expensive, time-consuming and laborious. Soil structure also important effects on water infiltration in the soil. The objectives of this study were to determine the spatial variability of water infiltrati...
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