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An improved visualization device made of polymethyl methacrylate (PMMA) was used to study the 3D flow profile inside conical columns of a 10° opening angle packed with C18 phase.
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The Brill transition of even-even polyamide 618 was investigated using differential scanning calorimetry (DSC), temperature-dependent wide angle X-ray diffraction (WAXD) and Fourier transform infrared (FTIR).
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The transmittance passing through the cell between crossed polarizers changed periodically with a regular 90° separation of the rotational angle.
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The pretilt angle of the cell was found to be 2.8°.
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With the increase of DHPDMS content, the water contact angle increased while the surface tension decreased.
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As the DHPDMS content increases above 5%, both the contact angle and the surface tension tend to approach a constant.
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The contact angle increases with increasing temperature, and it tends to approach a constant when the temperature is higher than 50°C.
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Based on electromagnetic theory, a computing model of the Talbot interferometer is established with the temporal and the spatial coherence taken into account and with the turning angle of the reflectors as a critical parameter.
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Through analyzing the basic relationship of variables in a synchronous machine, the characteristics of an air-gap-resultant electromotive force and an inner power angle under a special inner power factor angle are obtained.
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Some non-uniform rational B-splines (NURBS) control techniques, such as curves with an embedded line, a sharp angle, and so on, were used to verify the proposed method's compatibility with NURBS.
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By using the angle encoder and interpolation arithmetic, high precision position deviations can be attained.
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There were three conditions between the rotating optical field and the stationary optical field: end separation, angle misalignment and lateral misalignment.
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Surface energy of preservative-treated southern yellow pine (Pinus spp.) by contact angle measurement
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Based on the contact angle data, the surface energy was obtained from the acid-base approach.
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Effects of Boundary Condition and Helix Angle on Meshing Performance of TI Worm Gearing
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With helix angle chosen as parameter, the criterion for the existence of meshing boundary line on the surface of TI worm gearing is derived.
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If the helix angle is equal to or slightly smaller than the bigger angle, which makes two meshing boundary lines superpose, a preferable meshing performance is obtained.
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Using the method for calculating the transmission ratio of planet gear train, the relationship of the two oscillating angle between output axis and the bracket is established.
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The fuzzy control inputs were based on the front barrier distance and the difference between the left and right barrier distance measured by ultrasonic sensors; the output was the direction angle.
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The joint geometry data, such as the bevel angle, the gap, the area, and the mismatch, etc., aided in assembling large-scale aerospace components before welding.
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