Diagram of phase equilibria of SO₂-quinolclathrate available for SO₂ absorption by clathration was constructed over the wide range from unsaturated to saturated quinol aqueous solutions, and its consistency was verified by experiments.
Some physical properties needed for the calculation of phase equilibria were also measured.

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Properties of the Sherwood number for the film coefficients are given on the basis of dimensionless equations of motion and of mass transport.These lead, for geometrically dissimilar beds, to the possibility that dimensionless numbers with the hydraulic diameter as a representative length give a consistent correlation for the beds.
With these numbers, mass transfer characters are presented, showing that 1.relative location of bed particles has little effect on the Sherwood number for developing boundary layer regimes, 2.various mass transfer regimes are clearly distinguished one from another by mapping the regimes on a Reynolds number versus Schmidt number diagram, and 3.the most of mass transfer data available so far are correlated for wide range of variables (d_p=0.62-102 mm, ε_f=0.260-0.488, Sc (or Pr) =0.61-1890, and Re_k=1.3·10^-3-5.3·10⁴).Correlating equations for each mass transfer mechanism are presented as a relation between the Sherwood number (or the j_D factor) and the Reynolds number, both based on the hydraulic diameter.

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The generalized basic equations for heat transfer in melting, in which characteristics of melting temperature and volumetric radiation were considered, were derived by applying the concept of overall specific heat, and they were numerically analysed. The experimental data for lead, boron trioxide, margarine and glasses (white and green) were compared with the calculation results.
Consequently, the following conclusions were obtained.
(1) In this experimental conditions, the calculation results were fairly in good agreement with experimental data.
(2) The boundary conditions and volumetric radiation have large influences on the temperature profile and the rate of melting.

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The theoretical study has been carried out on the size determination of the aerosol particles by a Owltype photometer which was constructed for measurement of the angular dependency of the ratio of the long wavelength scattering light intensity to the short one scattered from the aerosol particles. The relations between the angular position of peaks of the long-short wavelength intensity ratio of the scattering light and the particle size parameter were calculated from Mie theory as functions of the longshort wavelength ratio, the refractive index and the degree of dispersion of aerosol particles.
As a result, it was found that increasing the wavelength ratio led to increase the appearance frequency of peaks of the scattering light intensity ratio with respect to the scattering angle and to heighten the effects of the refractive index and the dispersion of aerosol particles on the figure of angular dependence of the scattering light intensity ratio.
From the discussions on the effect of wavelength ratio on the photometer performance, it seems to be desirable to set the value of long-short wavelength ratio of the Owl-type photometer around 1.3.

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A new fundamental equation of extruding flow of Bingham plastic body is proposed here, based on the experimental results of extrusion of carbon paste for electrode through various kinds of nozzles, the virtual source point of flow lines (P_o, V_o) is taken into account.
The ultimate limit of extruding pressure (P_o) is affected by none of nozzle factors and extruding conditions, except the converging angle of a nozzle and the inlet diameter of a nozzle.
The source point of flow lines and the fluidity are also related experimentally with various factors of operational and equipment conditions.

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Some calculations on the degree of segregation J defined by Danckwerts which is a measure of micromixing effect, were made for the various kinds of residence time distribution functions;tank-in-series model, two stage-in-series model, two stage-in-parallel model.
S. A. Leshaw's accumulator model was also extended to some micromixing models. Some considerations were made as to relations between the above mentioned models and two environment models by Nishimura.
The average number of polycondensation of Nylon 66 was calculated as a typical model reaction of high viscosity polymerization system and micromixing effect was examined.

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The controls of the degree of polymerization P_Nmay be realized by the proper regulation of the con-centration of monomer or initiator in the radical polymerization system. The present paper proposes the method to regulate the monomer and initiator concentrations by the continuous feed, semi-batch operation.
The system of the ordinary differential equations with the given initial conditions is numerically solved, and the results of computation predict either of the so-called monomer feed policy or the initiator feed policy is attained in the polymerization system. The feed rate of monomer or initiator solution is regulated to hold the instantaneous values P_N(t) constant, and as the result, PN is hold at the prescribed value.
Experiments are made for the polymerization of methyl methacrylate in toluene solution, and the programmed regulation of the monomer feed rate makes possible to control P_N.

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Solubility curves and distribution curves were determined for the systems propionic acid+water+chlorinated hydrocarbon (carbon tetrachloride, chloroform, 1, 2-dichloroethane) at 25°C.
For the propionic acid+water+l, 2-dichloroethane system there was one solutropic point on the distribution curve represented by weight fractions.
The plait point was estimated by the following plots,
logy:(x-y)/y
where x is mole fraction of propionic acid in organic layer and y is mole fraction of propionic acid in water layer.

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The size distribution of aerosol particles generated by the atomization of monodisperse latex hydrosol have been studied experimentally, using sidewayslight scattering particle counters.
The photoelectrical pulses from the particle counter could be measured automatically with the multichannel pulse height analyzing technique of nuclear science.
It was found that the latex hydrosol contained large amounts of stabilizer.And it disturbed the drying of latex particles and the evaporation of the empty liquid droplets.
Experimental results suggest that it is necessary to remove the stabilizer from latex hydrosol in order to obtain a true monodisperse aerosol.

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