Informatics Publishing Limited

A. Nicodemus , B. Nagarajan , C. Narayanan , M. Varghese , K. Subramanian

Abstract

RAPD markers were used to study genetic variation in ten Teak (Tectona grandis L.f.) populations from Western Ghats and Central regions of India. Ten oligonucleotide primers resolved 90 amplification products of which 66 (73%) were polymorphic. The total genetic diversity detected within the species (H_sp) was 0.3 Average gene diversity (H₀) within different populations ranged from 0.185 to 0.261 (mean = 0.233). The Western Ghats populations had more diversity (H₀ =0.227 - 0.261) compared to those from Central India (H₀ =0.185-0.219). Partitioning of gel;etie diversity within and between populations showed that 78% of variation existing within populations and the rest between populations. A negative relationship was observed between latitude and within-population diversity. Nei's genetic distance between populations ranged from 0.053 to 0.264. Genetic distance. Tended to be low between populations from the same geographic region. The UPGMA dendrogram grouped the Western Ghats and Central Indian populations into two distinct clusters. Low intensity selection within populations is likely to capture a major portion of genetic diversity existing in Teak. The Western Ghats and Central Indian regions can be proposed as separate genecological zones for Teak. Future conservation strategies should aim at preserving both within and across population variation in Teak.

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Mohan Varghese , A. Nicodemus , K. Subramanian

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Acacia auriculiformis is one of the Australian Acacia species introduced in India for afforesting degraded lands, meeting fuelwood needs and as avenue trees. This species has been raised in the Western Ghats areas of Maharashtra and found to be very successful. Efforts were made to introduce A. mangium and A. crassicarpa by procuring seeds from Australia and Thailand. Growth performance and wood characteristics were studied in A. mangium, A. auriculiformis and A. crassicarpa planted in Thane District of Maharashtra. A. mangium had better growth than A. auriculiformis and A. crassicarpa. A. auriculiformis had higher wood density and phyllode index than the other species and A. Crassicarpa had long fibres and vessel elements. Since A. Mangium is being increasingly planted in tropical countries, multi-locational trials need to be raised in high rainfall areas in India to select the best performing seedlots.

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K. Subramanian

Abstract

No abstract

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M. H. Khedkar , K. Subramanian

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The Teak planting stock is usually raised in raised beds or poly bags. The first ever attempt in India to raise Teak planting stock in Root trainers is described. The trial scale Root trainer seedlings raised in Root trainers have given better development of biologically desirable lateral ischolar_mains. Observation on multiple tap ischolar_mains in the Root trainer planting stock is reported. The comparative growth performanee of plants of 75 days old Root trainer planting stock origin with the one year old Teak stump origin in the out planting site is recorded. The Root trainer plants are sturdier, healthier and they are putting up better collar girth in comparison to stump origin plants. The need to standardise the pregermination of Teak seeds and the Teak Root trainer nursery technology are indicated. The advantages of the Teak Root trainer seedlings over Teak stumps are narrated.

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M. H. Khedkar , K. Subramanian

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The Forest Development Corporation of Maharashtra Limited is one of the agencies implementing Rs.431.00 crore Maharashtra Forestry Projtect funded by the World Bank. The FDCM Ltd. Has to raise 1,25,000 ha under Production Forestry Component and 45,000 ha under Rehabilitation of Degraded Forests (RDF). A Nursery Development Unit has been created to introduce the Root trainer nursery technology. The FDCM Ltd. Through this unit has introduced the Root trainers in Iwo nursury sites namely at Lohara (Chandrapur District) and at makhmalabad (Nashik Distrct). As per the advice of Dr.J .P . Chandra. The 150 cm⁴ Block type Root traniners were procured and the planting stocks were raised. 3.91 lakhs of seedlings of Dalbergia sissoo, Bombax cerba, Acacia catechu, Bamboo, Gmelina arborea. Atlanthus,Tectona grandis etc. were planted over an area of 433.95 ha during 1995 monsoon . The details of the pioneering efforts in introducing the Root Trainer Nursery in the Forestry Sector in Mahnrashtra are briefly descrihed so that other states can adopt the technology.

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K. Subramanian , V. M. Gadbail , N. Rambabu , Mohan Jha

Abstract

This paper deals with the effect of culling on production on teak planting stock. Culling produces uniform and better quality seedlings.

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K. Subramanian , T. S. Seethalakshmi

Abstract

The pollen grains of Teak from Pune, Nagpur, Chikhalda, Hadapsar, Padve-Mazgaon and Chanda were examined. The pollen morphology was studied. There were no significant differenee in size of pollen grains of one location to other location. The percentage of sterile pollen grains in those ecotypes range from 1.94 to 16.50. 18 to 16 per cent of the pollen grains inside the sathers were found to be germinated in Teak of Pune origin. Since the proportion of the Sterile and germinated pollen grains is low, these may not be the factors contributing to the poor fruit set in Teak. Investigations on pollen viability and stigmatic receptivity are suggested to uoderstand the floral biology aDd fruit-set.

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S. Vasuki ¹, K. Subramanian ²

Affiliations
1 Department of Computer Applications, J.J. College of Arts and Science, Pudukkottai, Tamil Nadu, IN
2 Department of Information Technology, J.J. College of Arts and Science, Pudukkottai, Tamil Nadu, IN

Abstract

The process of detecting outliers is a surveillance that comes into view to move away patently from other surveillances in the model. This arrangement is planned to demonstrate the fixations happened among the explorations occurred between client, and server. In the practical scenario all the individuals obviously are familiar with the procedure of how to transfer a request for the meticulous requirements, and how to get a comeback for that demand. On the other hand no one knows about the inside process of searching information from a huge database. Clustering is one of the best known techniques to maintain the information efficiently into the database. Clustering employs grouping of similar objects (similarity in terms of data content or there may be any other factors also). Outlier detection is one of the main divisions of data mining and deserves further research attention from data mining community. The brilliant technique for text classification process is called Feature Selection. These processes merge with k-means and produce more effective result. Words in the feature vector are grouped and forming a header to that group based on the similarity test. Each cluster is formed based on the behavior of the text with other text and the average mean value. Same words into the cluster are grouped together and produce better data maintenance as well as through this process the data searching by the user is also categorized and fledged in a probabilistic analytical manner. This paper primarily focuses on comparing various outlier detection methods based on clustering and association rule applications and also prove that this present approach is efficient enough to find the outliers and represent the outlier as the cluster head.

Keywords

Clustering, Data Mining, Outlier Detection.

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P. Muthupriya ¹, B. G. Vishnuram ¹, K. Subramanian ²

Affiliations
1 Department of Civil Engineering, VLB Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N, IN
2 Department of Civil Engineering, Coimbatore Institute of Technology, Coimbatore-641 014, T.N.,, IN

Abstract

In recent years significant attention has been given to the use of pozzolan silica fume as a concrete property-enhancing material, as a partial replacement for portland cement, or both. The initial interest in the use of silica fume was mainly caused by the strict enforcement of air pollution control measures in various countries to stop release of the material into the atmosphere. More recently, the availability of high range water-reducing admixtures (HRWRA) has opened up new possibilities for the use of silica fume as part of the cementing material in concrete to produce very high strength or very high levels of durability or both. In this study effective use of silica fume as cementitious material in making high performance concrete has been studied as a result of which the air pollution due to silica fume can be minimized. It is vital to minimize air pollution and to enjoy the pollution free environment because air is one of the important resources for the sustenance of life on terrestrial organisms.

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M. Usha Rani ¹, K. Subramanian ²

Affiliations
1 Department of Civil Engineering, V. L. B. Janakiammal College of Engineering and Technology, Kovaipudur, Coimbatore-641 642, T.N., IN
2 Department of Civil Engineering, Coimbatore Institute of Technology, Coimbatore-641 014, T.N., IN

Abstract

The greatest challenge for construction industry in the present times is realization of projects aimed at infrastructure development in harmony with the sustainable development concept. Sustainable development means, judicious use of natural resources for various construction activities. The construction industry, due to its huge size to meet the growing needs of construction activities, is the largest consumer of natural resources such as aggregates, cement (made from lime available naturally) and water etc. To achieve sustainable development in construction sector, it is necessary to replace some of these materials with the alternative materials, which are basically by-products/or waste materials from industries, such as fly ash, granulated slag, silica fume, and their disposal is an environmental threat. These alternative materials not only benefit the environment but also add value to, in the form of enhancement of performance characteristics by judicious selection and proportioning and use. In this study fly ash (FA) and bagasse ash (BA), obtained from fired at controlled conditions, are admixed with Portland cement at different replacement levels. The properties of concrete investigated include compressive strength, splitting tensile strength, modulus of elasticity, modulus of rupture and resistance to chloride ion penetration. Optimum percentage of FA and BA for strength development along with other results are discussed in detail.

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K. Subramanian ¹

Affiliations
1 Central Manufacturing Technology Institute, Bangalore, IN

Abstract

In a globalised economic environment, Indian organizations are striving hard for their market share. Technological advances such as CNC machines, Flexible Manufacturing Systems (FMS), Robotics etc., combined with the induction of computers at the various stages of Design, Planning, Manufacture and Manufacturing Control covering the entire business cycle have made significant impact on the competitiveness of industries.

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S. Santhosh ¹, K. Subramanian ²

Affiliations
1 Sree Balaji Medical College and Hospital, Bharath Institute of Higher Education and Research, Chennai-73, IN
2 Department of Orthopaedics, Sree Balaji Medical College and Hospital, Bharath Institute of Higher Education and Research, Chennai-73, IN

Abstract

There is an increased incidence of hip fractures with aging due to decrease in muscle mass around the hip and osteoporosis. This is becoming more common as the proportion of elderly people in the population has been steadily increasing. Our study shall aim to evaluate the clinical, functional and radiological outcomes of bipolar hemi-arthroplasty and compare them to those treated by dynamic hip screw fixation, for communized, osteoporotic, displaced trochanteric fractures in the elderly population.

Keywords

Hip Fractures, Osteoporosis, Hemi Arthroplasty.

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