For other geometries, the general formula (20.39) holds, but the characteristic length is replaced by a hydraulic diameter de = 4 × (cross-sectional area for flow)/(wetted perimeter). For fully turbulent regime in pipes, Re should be larger than 104. The hydraulic design should be such ...
This document is part of Subvolume B 'Binary Liquid Systems of Nonelectrolytes II' of Volume 26 'Heats of Mixing, Vapor-Liquid Equilibrium, and Volumetric Properties of Mixtures and Solutions' of Landolt-Brnstein Group IV ' Physical Chemistry '. It contains the Chapter 'Heat of Mixing and So...
59 on the basis of measurements of the heat capacity of BPB and the formula of McMillan for Tc .60We note that the validity of using this latter formula is in this case problemati- cal, since it is not a universal formula.1... AM Gabovich,DP Moiseev - 《Zhurnal Nevropatologii I Ps...
Polyphenylene sulfone fibers mainly consisting of a structural unit represented by a general formula ##STR1## (x is 0 or 1 or 2) wherein x, the average value of x, is 1.0 to 2.0, and a method for production thereof. These fibers are prepared by modifying polyphenylene sulfide fibers, ...
So, the ultimate influence of convection on production should be discussed in future. Irani and Ghannadi discussed the performance of SAGD process with a higher injection pressure which was based on water flow normal to interface (Irani and Ghannadi, 2013). They derived a new formula which ...
Heat-indueed Crystal Transformation of Synthetic Bilayer An explicit combinatorial formula for the number of Kekule structures of a hexagon-shaped benzenoid system is deduced. Thus, the validity of the previously... K Okuyama,M Ikeda,S Yokoyama,... - 《Chemistry Letters》 被引量: 40发表: 198...
mechanism of heat propagation is distinguished from all those previously identified in solids and liquids, either classical or quantum. On the other hand, when the temperature becomes of the order of the Fermi temperature, its expression becomes another version of the Bridgman formula25for classical ...
According to the present invention, internally prepared light and heat stable polyamides are formed from polyamide-forming monomers in the presence of: (a) at least one effective amount of a 4-carboxy-2,2,6,6-tetramethylpiperidine compound of formula I wherein R1 is hydrogen, benzyl - or (...
The field (geometrical) theory of specific heat is based on the universal thermal sum, a new mathematical tool derived from the evolution equation in the Euclidean four-dimensional spacetime, with the closed time coordinate. This theory made it possible
This invention relates to a phenylene derivative represented by the following formula (1) or a salt thereof and also to a medicine containing it as an effective ingredient. ##STR1## wherein R.sup.1 represents H or halogen; A represents -... H Timmerman,Mingqiang Zhang,Kazuhiro Onogi,.....