نتایج جستجو برای: twist ratio
تعداد نتایج: 513379 فیلتر نتایج به سال:
Railway infrastructures are among the most important national assets of countries. Most of the annual budget of infrastructure managers are spent on repairing, improving and maintaining railways. The best repair method should consider all economic and technical aspects of the problem. In recent years, data analysis of maintenance records has contributed significantly for minimizing the costs. B...
Correspondence to: Mohammad Amani Tehran email: [email protected] ABSTRACT In this study, color coordinates variation of spundyed polyester filament yarns subjected to the false twist texturing process was investigated. Furthermore, the effect of different processing parameters including D/Y ratio, twist, heater temperature, texturing speed, overfeed, the draw ratio and intermingling process on t...
The recent high statistics NMC data on the Tin to Carbon structure function ratio seems to indicate, for the first time, a significant Q dependence, especially at small values of Bjorken x, x < 0.05, and Q > 1 GeV. Pure leading twist, perturbative QCD–based predictions, which are consistent with the free nucleon data, yield a fairly flat ratio with little or no Q dependence. In view of this see...
Twist-weaving of kilim over the past centuries is preserved among the nomadic tribes of Kerman province, especially in Afshar tribe in Sirjan area and it has been used in decorating sofreh and salt bag. In recent decades, some changes are occurred in method of kilim weaving in this area and the "twist weaving" is used in all parts of kilim and has been famous as "Shirikipich Kili...
Nowadays, heat exchangers with twisted-tape inserts have widely been applied for enhancing the convective heat transfer in various industries such as thermal power plants, chemical processing plants, air conditioning equipment, refrigerators, petrochemical, biomedical and food processing plants. In general, twisted tape insert introduces swirl into the bulk flow which consequently disrupts a th...
Chiral three-dimensional cubic lattices are developed with rigid cubical nodules and analyzed via finite element analysis. The lattices exhibit geometry dependent Poisson’s ratio that can be tuned to negative values. Poisson’s ratio tends to zero as the cubes become further apart. The lattices exhibit stretch-twist coupling. Such coupling cannot occur in a classical elastic continuum but it can...
2014 We report a study of the viscoelastic and elastic properties of a nematic liquid crystal as measured by static and dynamic light scattering. Experimental values are reported for the splay/twist/bend elastic and viscoelastic ratio as well as for the Mi0119sowicz viscosity ratio ~1/~3 of APAPA in the nematic region as a function of temperature. J. Physique 45 (1984) 1627-1642 OCTOBRE 1984,
The contrast ratio of reflective bistable twisted nematic displays are optimized by means of a parameter space approach. By plotting the contrast ratio as a function of the twist angle and thickness-birefringence product of the display, the regions where the display shows the best contrast ratio are clearly shown. Both the absolute reflectance and wavelength dispersion of two bistable twisted s...
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