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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.
      
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).
      
The transmittance passing through the cell between crossed polarizers changed periodically with a regular 90° separation of the rotational angle.
      
The pretilt angle of the cell was found to be 2.8°.
      
With the increase of DHPDMS content, the water contact angle increased while the surface tension decreased.
      
As the DHPDMS content increases above 5%, both the contact angle and the surface tension tend to approach a constant.
      
The contact angle increases with increasing temperature, and it tends to approach a constant when the temperature is higher than 50°C.
      
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.
      
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.
      
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.
      
By using the angle encoder and interpolation arithmetic, high precision position deviations can be attained.
      
There were three conditions between the rotating optical field and the stationary optical field: end separation, angle misalignment and lateral misalignment.
      
Surface energy of preservative-treated southern yellow pine (Pinus spp.) by contact angle measurement
      
Based on the contact angle data, the surface energy was obtained from the acid-base approach.
      
Effects of Boundary Condition and Helix Angle on Meshing Performance of TI Worm Gearing
      
With helix angle chosen as parameter, the criterion for the existence of meshing boundary line on the surface of TI worm gearing is derived.
      
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.
      
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.
      
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.
      
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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