Seed proteins of finger millet and their amino acid composition

Determination of the protein content and amino acid composition of finger millet samples from white-grain and brown-grain varieties, revealed wide variations in protein and amino acid composition. Solubility fractionation of proteins showed that prolamin and glutelin constitute the major protein fractions. White-grain varieties have higher prolamin and lower glutelin levels than the brown-grain varieties. The amino acid composition of three protein fractions of one white and one brown variety are reported. These studies suggest that it should be possible to provide high amounts of good quality protein in lines developed from white×brown seed crosses.     

The choice of an input-output table embedded in regional econometric input-output models

In this paper, we investigate the role of input-output data sources in regional econometric input-output models. While there has been a great deal of experimentation focused on the accuracy of alternative methods for estimating regional inputoutput coefficients, little attention has been directed to the role of accuracy when the input-output system is nested within a broader accounting framework. The issues of accuracy were considered in two contexts, forecasting and impact analysis focusing on a model developed for the Chicago region. We experimented with three input-output data sources: observed regional data, national input-output, and randomly generated inputoutput coefficients. The effects of different sources of input-output data on regional econometric input-output models revealed that there are significant differences in results obtained in both forecast and impact analyses. The adjustment processes inherent in the econometric input-output system did not mask the differences imbedded in input-output tables derived from different data sources. Since applications of these types of models involve both impact and forecasting exercises, there should be strong motivation for basing the syste on the most accurate set of input-output accounts.     

Controlling chaotic dynamics of periodically forced spheroids in simple shear flow: Results for an example of a potential application

Recently, we studied the technologically important problem of periodically forced spheroids in simple shear flow and demonstrated the existence of chaotic parametric regimes. Our results indicated a strong dependence of the solutions obtained on the aspect ratio of the spheroids, which can be used to separate particles from a suspension. In this paper we demonstrate that controlling the chaotic dynamics of periodically forced particles by a suitably engineered novel control technique, which needs little information about the system and is easy to implement, leads to the possibility of better separation. Utilizing the flexibility of controlling chaotic dynamics in a desired orbit irrespective of initial state, we show that it is theoretically possible to separate particles much more efficiently than otherwise from a suspension of particles having different shapes but similar sizes especially for particles of aspect ratior _e >1.0. The strong dependence of the controlled orbit on the aspect ratio of the particles may have many applications such as in the development of computer-controlled intelligent rheology. The results suggest that control of chaos as discussed in this work may also have many applications. A list of symbols is given at the end of the paper     

Liquid–liquid extraction of Hg(II) from acidic chloride solutions using bis‐2‐ethylhexyl sulfoxide

The liquid–liquid extraction of Hg(II) from acidic chloride solutions has been studied using bis‐2‐ethylhexyl sulfoxide (B2EHSO) as an extractant. For comparison, extraction studies have also been carried out using di‐n‐octyl sulfoxide (DOSO) and diphenyl sulfoxide (DPhSO). The extraction data have been analysed by both graphical and theoretical methods taking into account aqueous phase speciation and all plausible complexes extracted into the organic phase. These results demonstrate that Hg(II) is extracted into xylene as HgCl₂.3R₂SO (where R₂SO represents the sulfoxide). The equilibrium constant of the extracted complex has been deduced by non‐linear regression analysis. The developed liquid–liquid extraction procedure has been applied for the recovery of mercury from the brine‐sludge of a Chlor‐Alkali plant. © 2001 Society of Chemical Industry     

Low-Temperature Sintering and Mechanical Property Evaluation of Nanocrystalline 8 mol% Yttria Fully Stabilized Zirconia

Fully stabilized zirconia containing 8 mol% yttria (8Y-FSZ) in nanocrystalline form has been synthesized by the coprecipitation method. The formation of an easily filterable hydroxide is facilitated by the addition of ammonium sulfate and polyethylene glycol during precipitation. The precipitate is then calcined to produce nanocrystalline powder. Using this powder, it has been possible to obtain a sintering density of more than 95% at a temperature as low as 1150°C by following a conventional sintering schedule. Adoption of a two-stage sintering schedule, in which heat treatment of the powder compact has been carried out initially to a high temperature, followed by a long holding at a lower temperature, resulted in further lowering of the sintering temperature. Hardness and toughness values have been found to be dependent on the microstructure in low-temperature-sintered samples.     

MEASUREMENT OF VISCOELASTIC EFFECTS WITH A DEEP CHANNEL SURFACE VISCOMETER

The simple surface fluid represents a class of surface stress-deformation behavior. We develop for this form of material behavior a class of solutions, known as the curvilineal surface flows, that can be analyzed without assuming specific forms for the memory functions. The deep channel surface viscometer and the oscillating deep channel surface viscometer belong to this class of flows.     

Numerical solution of thermal instability of a rotating micropolar fluid layer

In this paper, we have considered the thermal instability of a rotating, heat conducting, micropolar fluid layer heated from below and confined between two rigid boundaries. The onset of thermal instability is governed by a linear eigenvalue problem. The solution of the eigenvalue problem is obtained by using finite difference method and Wilkinson's iteration technique. The effects of rotation and micropolar parameters on the critical Rayleigh number and the wave number at the threshold of instability are discussed in detail.