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DISCOVERY

Volume 52, Issue 246, June 2016

About the Cover

CELEBRITY OF THE MONTH
Johann Gottfried Galle
204th Birthday, (9 June 1812 – 10 July 1910)
Discoverer of planet Neptune

Johann Gottfried Galle was a German astronomer. He was the first person to view planet Neptune. He was born on June 9, 1812, in Papsthaus. He started working as an assistant to Johann Franz Encke at the Berlin Observatory in 1835. He made use of a Fraunhofer-refractor with a 9 Zoll (22.5 cm) aperture which helped him discover an inner dark ring of Planet Saturn. Between December 1839 and March 1840, he also discovered three new comets. In 1845, he was awarded a Doctorate of Philosophy. With the help of his assistant, Heinrich Louis, he discovered a star of 8th magnitude which was only one degree away from the calculated position. He able to measure the proper motion of the celestial object (4 seconds of arc) and it was then determined as a planet. The planet was subsequently named as Neptune. He worked in Breslau for more than 45 years. He was elected as the rector, which is the highest position one can hold in a university, for the academic year 1875/76. He was also interested with climatology and the Earth’s magnetic field.

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ANALYSIS

Stress concentration around countersunk hole in composite plate

Pritam Kulkarni, Kulkarni VV

The application of composite plates is increasing in modern applications like in aerospace, underwater transportation and other industrial applications because of their high strength to weight ratio, high strength, high stiffness, low density and long fatigue life.

Discovery, 2016, 52(246), 1352-1356

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Mathematical modelling of surface roughness in hard turning for evaluating the effects of process and tool parameters

Srinivasa Rao G, Suneel D, Manikant KGSV, Praveen D

The work presented in this paper examines the effects of cutting parameters (cutting speed, feed rate and depth of cut) and tool parameters (nose radius and rake angle) onto the surface roughness through the mathematical model while machining AISI 52100 steel. Each parameter was set at three levels.

Discovery, 2016, 52(246), 1366-1372

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Investigations on the forces during hard turning of AISI52100 steel

Manikanta N, Ravi Sankar B, Praveen A

Turning of hardened steels using single-point cutting tool has got considerable interest as it acquires many benefits like lower equipment costs, shorter setup time and fewer process steps which in turn provides high flexibility and ability to cut complex geometries over traditional grinding.

Discovery, 2016, 52(246), 1374-1379

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Fabrication and Mechanical Characterization of Boron Carbide Reinforced Aluminium Matrix Composites

Ravi B, Balu Naik B, Uday Prakash J

Aluminium Matrix Composites (AMCs) have gained importance in various industries because of their good mechanical properties such as wear resistance, low density, high strength and good structural rigidity.

Discovery, 2016, 52(246), 1389-1395

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Analysis of incomplete filling defect for injection molded thin-shell container using MOLDEX 3D simulation

Sameer Nagpure, Chadge RB

Nowadays, Plastic Injection Molding (PIM) is one of the most popular and important polymer processing operations in plastic industry. PIM gives high production rate at low cost and capability to produce intricate parts with higher precision.

Discovery, 2016, 52(246), 1461-1466

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RESEARCH

An appraisal of clinical information in referral letters sent to psychiatric service in a teaching hospital

Ogualili PN, Ezejiofor OI, Nwaneli UC, Anyabolu AE

Referral of patients to hospitals, specialists and other relevant institutions is an essential part of health care. Patients can be referred to mental health specialists from physical health services or vice-visa considering the type of relationship between mental disorders and physical conditions.

Discovery, 2016, 52(246), 1479-1482

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Optimal Logic Circuit Design for Reversible Quantum Computation Based on Excess-3 Code

Jeong Ryeol Choi

If the classical computers would be replaced by quantum computers in the future, the algorithms for reversible quantum computations are necessary.

Discovery, 2016, 52(246), 1483-1493

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Evaluation of antidiarrhoeal activity of ethanolic extracts of Pithecellobium dulce on castor oil-induced Diarrhoea in albino Wistar rats

Choday Venu, Ramanjaneyulu K, Satish Reddy N, Vijaya Laxmi B, Bhavana Alla

The study was aimed to evaluate the antidiarrhoeal effect of ethanol extract of Pithecellobium dulce (Family: Leguminosae) using castor oil induced diarrhoea in rats. At the doses of 100, 200and 400 mg/kg, the ethanolic extract showed significant antidiarrh oeal activity in both models.

Discovery, 2016, 52(246), 1494-1496

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Canonical Genetic Algorithm: Structure, Parameters, Operators and Adaptation Issues

Rohtash Dhiman, Saini JS, Priyanka

This paper puts forth a succinct account of Genetic Algorithms (GAs), their structure, parameters, operators and their adaptation issues. The description of implementation details of GA can be of great help even to a novice to code GA for any application at hand.

Discovery, 2016, 52(246), 1497-1504

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PERSPECTIVE

The origin of the earth's biosphere

Sabri Ahmed Kanan

In the open doctrine the main propositions of the origin of the water or the origin of the Earth's biosphere are described in the form of 5 postulates and it is for the first time that there has been given a precise definition of the term and the value of the origin of water.

Discovery, 2016, 52(246), 1505-1508

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