نتایج جستجو برای: spot diameter
تعداد نتایج: 147364 فیلتر نتایج به سال:
Each positive well in ELISPOT assays contains spots of variable sizes that can range from tens of micrometers up to a millimeter in diameter. Therefore, when it comes to counting these spots the decision on setting the lower and the upper spot size thresholds to discriminate between non-specific background noise, spots produced by individual T cells, and spots formed by T cell clusters is criti...
background: lactobacillus plantarum isolated from fermented olives has been extensively studied with the aim of its use in starter cultures for olive or other production fermentations, but little is known about its antimicrobial resistance and its probiotic effects. objectives: the aim of this study was to determine the antimicrobial activity using different strains of l. plantarum isolated fro...
The welding process parameters of resistance spot are determined by quality indicators, such as nugget diameter, and tensile shear test behavior, failure load location. In this study, deep-learning models were investigated to predict the indicators from base materials parameter information. For each model, hyperparameters, number hidden layers, nodes in layer, learning rate optimizer, epochs, o...
In 1998, researchers at the University of Maryland discovered a new disease of creeping bentgrass caused by an unidentified species of Ophiosphaerella. Through morphological and molecular study, it was shown that the pathogen constituted a new species, Ophiosphaerella agrostis, and the disease was named bentgrass dead spot. Subsequently, O. agrostis was found in Texas and Florida causing dead s...
Angular correlation of annihilation radiation (ACAR) is a well established technique for the investigation of the electronic structure. A major limitation of ACAR studies is the available positron flux at a small spot on the sample. For this reason, the focus of this work is put on the discussion of a newly developed source-sample stage of the new 2D-ACAR spectrometer at Technische Universität ...
We report on the monotonic Raman frequency shift and intensity variation when a laser spot moves along the same single-walled carbon nanotube (SWNT) for both the radial-breathing mode (RBM) and the G-band. Our substrates are Si wafers coated with thermal oxide, and trenches with widths of 1-80 mum are etched in the SiO2 by photolithography and reactive ion etching. SWNTs are grown by chemical v...
We study the feasibility and time of communication in random geometric radio networks, where nodes fail randomly with positive correlation. We consider a set of radio stations with the same communication range, distributed in a random uniform way on a unit square region. In order to capture fault dependencies, we introduce the ranged spot model in which damaging events, called spots, occur rand...
Utilizing current Micro Electro Mechanical Systems (MEMS) technologies, a three-port micro-capillary pumped loop (micro-CPL) was designed, fabricated and tested to provide integral cooling to electronics or MEMS type devices. The two wafer design consists of one silicon and one borofloat glass wafer. An analytical study was used in determining the geometry of the device, including the evaporato...
We report surprising surface-induced torsional alignment of polydimethylsiloxane (PDMS) chains in contact with the muscovite (001) mica surface with and without confinement. The alignment was measured by polarized confocal Raman spectroscopy over diffraction-limit circular spots with approximately 0.3 microm diameter. Our discussion here focuses on the intense symmetric methyl-group vibration c...
The AIRIX flash X-RAY radiographic facility is now being characterized at Moronvilliers near REIMS. The 1.92 – 3.5 kA, 60 ns electron beam has been accelerated and transported through the 64 induction cells from 4 to 20 MeV (250 kV/cell). We present the acceptance tests of the machine, conducted with the 3.0 kA electron beam. We review in this paper, the characteristics and the performances of ...
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