Geology and geochemistry of the Middle Proterozoic Eastern Ghat mobile belt and its comparison with the lower crust of the Southern Peninsular shield

Two prominent rock suites constitute the lithology of the Eastern Ghat mobile belt: (1) the khondalite suite - the metapelites, and (2) the charnockite suite. Later intrusives include ultramafic sequences, anorthosites and granitic gneisses. The chief structural element in the rocks of the Eastern Ghats is a planar fabric (gneissosity), defined by the alignment of platy minerals like flattened quartz, garnet, sillimanite, graphite, etc. The parallelism between the foliation and the lithological layering is related to isoclinal folding. The major structural trend (axial plane foliation trend) observed in the belt is NE-SW. Five major tectonic events have been delineated in the belt. A boundary fault along the western margin of the Eastern Ghats, bordering the low grade terrain has been substantiated by recent gravity and the deep seismic sounding studies. Field evidence shows that the pyroxene granulites (basic granulites) post-date the khondalite suite, but are older than the charnockites as well as the granitic gneisses. Polyphase metamorphism, probably correlatable with different periods of deformation is recorded. The field relations in the Eastern Ghats point to the intense deformation of the terrain, apparently both before, during and after metamorphism

Landing of Whale shark, Rhiniodon typus at Gopalpur, Ganjam district, Orissa

A male whale shark, Rhiniodon typus was landed in Gopalpur by a shore seine from a depth of 12m. Morphometric measurements were taken and discarded in to the sea

Bumper catches of Arius tenuispinis by shore seines in Orissa

Bumper catches of Arius tenuispinis by shore seines in Oriss

Search for physiologically active compounds. Part XXV. Synthesis of 7, 8-furano- and pyrono-3-methyl-2-(2-furyl)-chromones

α-Methyldihydrofurano, γ and α-pyrono ring systems have been built on 7, 8-position of 2-(2-furyl)-3-methyl chromone. The structure-activity relationship among 2-(2-furyl)-chromones is discussed

Search for physiologically active compounds. Part XVIII. Synthesis of 6- and 7-halo-2-alkylchromones

This article does not have an abstract

Kinetics of substitution of cis-bis(malonato)diaquochromate(III) with glycine, DL-alanine and DL-phenylalanine in alkaline medium

The kinetics of interaction among amino acids such as glycine, DL-alanine and DL-phenylalanine and cis-bis(malonato)diaquochromate(III) has been studied spectrophotometrically as a function of [glycine], [DL-alanine] and [DL-phenylalanine] in alkaline medium. The effect of pH, temperature and substrate was also studied. The substitution reaction has been found to proceed via two steps: amino acid dependent and amino acid independent path. In this process, it indicated that the substitution reaction occurs through an Ia mechanism in the amino acid dependent path and a dissociative mechanism in the independent path, showing the higher reactivity of single ended malonate complex.KEY WORDS: Substitution, cis-bis(Malonato)diaquochromate(III), Amino acids, Alkaline mediumBull. Chem. Soc. Ethiop. 2011, 25(1), 103-110

A Process Oriented Approach to Waiting Line Management in a Large Pilgrimage Center in India: A Case Study

This article documents an innovative approach to manage waiting line in the largest pilgrimage center in the world. By a judicious combination of process orientation and advances in Information Technology, the pilgrimage center’s management has been able to dramatically change the pilgrims waiting experience. The pilgrimage location under study is Tirumala located in Andhra Pradesh state in India. The number of visitors to this important location has been steadily increasing over time. As of 2005, the location attracted approximately 16 million visitors a year. The primary objective of a pilgrim visiting Tirumala is to have darshan of the principle deity in the temple. The secondary objectives include tonsure (shaving head as a mark of respect), offering donations, prasad collection, local sight seeing and shopping. The immense popularity of the temple and its location poses significant challenges to the management of the system. This temple is a tradition bound Institution. Therefore, some alternatives to resolve pilgrim waiting time are feasible and some are not. There are some hard constraints which may not stand the test of logic. The ability to manage the traffic volume is a function of processing rate (darshan duration) at the temple and darshan time available per day. This case study is an example of improving operational effectiveness by using formal management methods in addressing an important real life problem in an under researched area.

Estimation of Measures in M/m/1 Queue

Maximum likelihood and uniform minimum variance unbiased estimators of steady-state probability distribution of system size, probability of at least ℓ customers in the system in steady state, and certain steady-state measures of effectiveness in the M/M/1 queue are obtained/derived based on observations on X, the number of customer arrivals during a service time. The estimators are compared using Asympotic Expected Deficiency (AED) criterion leading to recommendation of uniform minimum variance unbiased estimators over maximum likelihood estimators for some measures

Dynamic refining control model for LD converter

A mathematical model for the dynamic refining control of the LD Converter is presented. Equations representing the reaction kinetics are formulated using the oxygen demand function. The amount of oxygen accumulated in LD Conver-ter, which is calculated from the oxygen balance by using exhaust gas data, corresponds to the amount of FeO, Fe203 and Mn0 in the slag during blowing. With the control of the refining reaction with oxygen balance carbon, phospho-rus and manganese contents of steel and the total iron content of slag at blow end were controlled at preferable levels and their fluctuations were remarkably reduced. The equations were coupled with appropriate thermal balance equations. The resulting set of non-linear first order equations have been numerically solved to predict the reaction path in the converter as a function of the operat-ing conditions like oxygen blowing rate, lance height, iron ore, limestone additions rates etc. With continuous on line data feeding from the converter facilities like sublance systems and waste gas analysers the entire conve-rter operation could be automated. The model works on a simple micro computer and could be easily incorporated on to the on-line control circuit of the Converter