Joshi estimation

As regards to the estimation of force due to buoyancy, there have been two schools of thought. One considers the force equal to VpPtg where p, is the continuous phase density and Vp is the particle volume (Clift et al., 1987 Clift, 1993 Joshi, 1983 Epstein, 1984). The other school considers the buoyancy force equal to VpPog where pd is the average density of dispersion (Foscolo and Gibilaro, 1984 Gibilaro etal, 1987 Astarita, 1993). 

Many quantum-chemical descriptors are derived from the charge distribution in a molecule or the electron density of specified atoms or molecular regions, and from conformational energy values such as the Joshi electronic descriptors. Moreover, several -> charge descriptors and -> electric polarization descriptors are obtained from atomic charge estimations. 

Joshi U. Non-isotopic immunoassays for the estimation of steroid hormones. In Pal SB, ed. Immunoassay technology, Vol 1. Berlin Walter de Gruyter Sc Co, 1985. 

In the presence of gas, the power consumption (Pg) is lower at the same speed. It is estimated nsing the following correlation of Rewatkar and Joshi (1991b, d) ... 

For this value of superficial gas velocity, the gas induction rate (Qg), fractional gas holdup (Sg), and power consumption (Pg) are calcnlated, both in the presence of a gas-inducing impeller and in its absence. Hydrodynamic characteristics and the mass transfer coefficient are estimated using the correlations of Patwardhan and Joshi (1998). 

Hunger J, Niedermayer S, Buchner R, Hefter G (2010) Are nanoscale ion aggregates present in aqueous solutions of guanidinium salts J Phys Chem B 114 13617-13627 Joshi RM (1982) Bond energy scheme for estimating heats of formation of monomers and polymers. 

Calculation of the wall shear term in Eq. (4.10) requires estimation of the two-phase wall shear stress which is a complex function of gas holdup, superficial gas and liquid velocity, liquid-phase rheological properties, and wall roughness. The models for in gas-liquid two-phase flows are limited, and most are not general and cannot be extended beyond their restricted conditions (Gharat and Joshi, 1992). The two-phase wall shear stress is even more difficult to estimate when the liquid phase is non-Newtonian (Al-Masry, 2001). Even when a model for is known, the model is usually a highly nonlinear function of gas holdup (Beyerlein et al., 1985 Herringe and Davis, 1978 Merchuk and Stein, 1981), and one has to solve a nonlinear version of Eq. (4.10) to obtain the gas holdup. This is inconvenient, especially when a large number of data points are acquired. 

Saravanan and Joshi (1995) and Patwardhan and Joshi (1997) have given empirical correlations for in the absence and presence of gas sparging. Patwardhan and Joshi (1997) have suggested the following correlation for estimating the reduction in gas induction rate due to sparging ... 

Transpiration ratios have been estimated for a variety of CAM plants. Joshi et al. (1965) studied pineapple growing in a glasshouse in North Carolina during the winter. They estimated a CO2 uptake rate of 0.5-0.7 mg dm" h and transpiration of 20-50 mg dm h This gives a TR range of 40-72. For an 80-day period, pineapple growing at a rate of 15-18 mg dry weight increase per day dm leaf showed a ratio of about 50 for actual water loss to dry matter accumulated. 

Joshi [71] using energy balances, proposed a unified model for estimating the liquid mixing. This model under the specific conditions of three-phase fluidized beds provided the following correlation where Dj, the axial dispersion coefficient, is given as a function of the various operating parameters uq, u, ... 

McCarthy et al., 1996 Melville et al., 2000 Robbins and Barrow, 1974 Rubinoff et al., 2003 Sauer et al., 1996 Schall et al., 1983, 1987 Shenyavskaya et al., 1965, 1968 Simard and James, 1992 Uttam and Joshi, 1995 Uttam et al., 1997 Verges et al., 1999 Xin and Klynning, 1994), molecular constants for most fluorides RF and some chlorides RCl have been determined only for the ground electronic state. These data are sufficient for reasonably estimating molecular constants for unknovm compounds in this state. Thus, the possibility appears to use the rigid rotator-harmonic oscillator model in calculations of the thermodynamic functions for the entire series of RF and RCl molecules. 

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