International Journal of Advanced Research in

Science and Technology (IJARST)


Volume 3 - Issue 4 | 2014


01. Life history and larval performance of the Common Leopard butterfly, Phalanta phalantha Drury(Lepidoptera: Rhopalocera: Nymphalidae).

M. Bhupathi Rayalu*, V. Krishna Kumari, M. Tarakeswara Naidu and J.B. Atluri

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Highlights

The life history of the Common leopard butterfly, Phalanta phalantha and larval performance in terms of food consumption and utilization, and the length of life cycle on its host plant Flacourtia indicaare described for the first time. The study was conducted during 2009 at Visakhapatnam (17o 42' N and 82o 18' E), South India. Phalanta phalantha completes its life cycle in 19 – 21 (20.20 ± 0.84) days (Egg: 3; Larva: 10-12; Pupa: 6 days). The values of nutritional indices across the instars were AD (Approximate Digestibility) 66.49 – 96.29%; ECD (Efficiency of Conversion of Digested food) 1.95 – 30.12%; ECI (Efficiency of Conversion of Ingested food) 1.88 – 20.03%, measured at the temperature of 28 ± 20 C and RH of 80 ± 10% in the laboratory. These relatively high values of ECD and ECI explain at least partially the ecological success of Phalanta phalantha in the urban environment of Visakhapatnam.

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02. Biocel-WD a potent fungicide for Medium Density Fibre Board.

Aparna Kalawate* and K.Ch. Varadaraju

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Highlights

The present work deals with the evaluation of efficacy of Biocel-WD against wood destroying fungus. Biocel-WD (Sodium pentachlorophenate) was evaluated at 0.25 and 0.5% concentration on the weight of liquid resin taken for the experiment. The chemical was incorporated in the glue/adhesive composition. The fibres were blended with the glue. Control panel for Medium density fibre board (MDF) were also made without Biocel-WD incorporation in the glue. The treated and control samples were exposed against the wood destroying fungus for three months to test the efficacy of Biocel-WD. From the results of the study it was found that Biocel-WD at 0.5% resisted the attack of wood destroying fungus. The treated and untreated samples were also subjected for physical and mechanical properties as per relevant standard. The panels conformed to the physical and mechanical properties.

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03. Development of Veneer – Bamboo Mat Flexi Ply.

Sujatha D*, Uday. D. N and Anand Nandanvar

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Flexi Ply or Flexible plywood is one of the latest panel product based on wood and is hailed as architect’s dream product and the interest in this product is growing day by day. Assembly of veneers in flexi ply is quite opposite to that in plywood. While the face veneers grain run across the length of the board, the thin inner layer (veneer grain) runs along the length of the board. However, flexi ply tends to break when bent too much, due to rupture of the thin inner layer. In order to overcome this problem, IPIRTI has developed a technology for flexi ply with the inner layer of veneer being replaced by bamboo mat. This reduces the possibility of breakage when rolled. Plywood of 3 mm and higher thickness have the tendency to break when rolled i.e., due to the non flexibility of the product. The flexi ply developed in combination with bamboo mat has flexibility up to 8mm thickness panels. The flexi ply so developed has great potential for applications in cabins of curved shapes, arch panels, furniture and joinery manufacturers.

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04. Estimation of Seafloor Bathymetry across the Shallow Waters of Coastal Region using Remote Sensing and GIS Techniques: A Case Study of Andaman Islands, Territory of Indian Administration, India.

M. Vinay*, Ramu, B.Mahalingam and B.V Shobha

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The present study is conducted in order to determine the depth of sea floor. Study of Bathymetry is very importance in terms of navigation, Ship Docking and to understand the coastal process. Usage of Remote sensing data and generating a spatial database makes us to efficient use of data for the research purpose, the methodology for determining the bathymetry follows an empherical method of Geostatistical regression that the band ratio of Logarithm of Blue band divided by Logarithm of Red band of Landsat imagery versus Vertical Sounding data obtained from nautical chart. The obtained linear equation is multiplied with the output band. Then the results shows the bathymetry of seafloor across Shallow water of coastal region up to 50m of depth.

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05. Design of 2-Dimensional Multiplier Using Area efficient and Power Optimization Technique.

Kesanakurthi Rajasekhar* and J. Kiran Chandrasekhar

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Highlights

Based on the simplification of the addition operations in a low-power bypassing-based multiplier, a low-cost low-power bypassing-based multiplier is proposed. Row-bypassing multiplier, column-bypassing multiplier, 2-Dimensional bypassing multiplier and braun multipliers are implemented in CMOS and GDI technique. By optimizing the transistor size in each stage the power and area are minimized. The results of post-layout simulation compared to similar reported ones illustrate significant improvement. Simulation results show great improvement in terms of Power. The experimental results show that our proposed low-cost low power multiplier saves hardware cost and reduces the power dissipation.

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06. Design Of Low Power SRAM Cell Using Area Efficient Leakage Control Technique.

J. Harini Nayana* and U. Jyothsna

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In deep submicron technologies, leakage power becomes a key for a low power design due to its ever increasing proportion in chip’s total power consumption. Power dissipation is an important consideration in the design of CMOS VLSI circuits. High power consumption leads to reduction in battery life in case of battery powered applications and affects reliability packaging and cooling costs. We propose a technique called LCPMOS for designing CMOS gates which significantly cuts down the leakage current without increasing the dynamic power dissipation. LCPMOS, a technique to tackle the leakage problem in CMOS circuits, uses single additional leakage control transistor, driven by the output from the pull up and pull down networks, which is placed in a path from pull down network to ground which provides the additional resistance thereby reducing the leakage current in the path from supply to ground.

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07. On-Chip Bus Designing with the Interface of Open Core Protocol.

Pathivada V J Raj Kumar* and Kurada Phaneedra

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As more and more IP cores are integrated into an SOC design, the communication flow between IP cores has increased drastically and the efficiency of the on-chip bus has become a dominant factor for the performance of a system. The on-chip bus design can be divided into two parts, namely the interface and the internal architecture of the bus. In this work we adopt the well-defined interface standard, the Open Core Protocol (OCP), and focus on the design of the internal bus architecture. We develop an efficient bus architecture to support most advanced bus functionalities defined in OCP, including burst transactions, lock transactions, pipelined transactions, and out of-order transactions.

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08. Joint Forest Management in Forests of East Godavari and Enumeration of Species Diversity.

Ch. Bhavannarayana, V.Saritha*, K. Sarala and P. Brahmaji rao

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Biodiversity occurring at Pothavaram, Gedhada and Murari Reserve Forests (RFs) was studied along with impact of JFM works at Pothavaram RF. Out of 17 tree species observed, Terminalia tomentosa showed 100% frequency in Pothavaram RF, Wrightia tinctoria and Xylia xylocarpus in Gedhada RF, Polyalthia cerasodes and Stereospermum personatum in Murari RF. Eight species recorded higher IVI values. Higher species diversity observed in Murari RF and species dominance and richness at Gedhada RF. More number of tress observed in the height class of 2-4 m and girth class of 10-30 cm. Four species found to be endangered at Pothavaram RF and two each at Gedhada and Murari RF areas. Higher increment in basal area and growing stock observed at JFM implemented plots than control at Pothavaram RF indicating JFM works are effective in regenerating the degraded forests.

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09. Structural orientation optimization of the pole mount support of a solar panel for wind load by using CFD analysis.

K.V. Siva Apparao*, T. Prakash Lazarus and I. Satyanarayana

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Highlights

In the recent years the electricity generation price has been increasing rapidly. So world is in search for technologies where renewable energies are used for electricity production. This can reduce the prices on the electricity that is generated. Renewable energies are nothing but the energy source that is naturally regenerated such as wind, tides, sunlight, rain, waves etc. Out of these, solar energy (energy from sunlight) can be easily collected. In the current study, CFD simulations were carried out to estimate the wind Effect for various angles. Simulations were carried out for55m/s, 70m/sat different inclination (θ) angles like 28,30,32,34 For slandered wind direction. It was observed that at a specific distance between two sets of panels and the lift, drag coefficient for the panels reaches a minimum. Another investigation was performed to determine the maximum strength of the solar panel supporting stretcher for effect of aerodynamic pressure.

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10. Physico-Chemical analysis of drinking water samples of Pentapadu village.

D. Madhava Sarma*, B. V. Rao, M. V. Lakshmi, B.Chakravarthi, P.S.S. Sravanthi and T.V.S. Padmavathi


Highlights

Water contains impurities depending upon its source of water. The physical and chemical impurities impart odour, colour and turbidity. Taste and odour may also be caused by dissolved organic matter or by microorganisms such as algae. Colour is generally due to the presence of colloidally dispersed organic matter or because of compounds like iron oxide. Odour is caused by the suspended or colloidal matter. Bacteriological impurities are caused by pathogenic bacteria such as E coli and typhoid bacillus. In the present work ground water samples are collected from various places in Pentapadu village. Pentapadu village is located between 16o45’-17o30’Northeren Latitude and 80o55’-81o55’Eastern Longitudes of West Godavari District of Andhra Pradesh. Water analysis was carried out and physico chemical properties are studied. It was observed that most of the parameters are differing from place to place and no uniformity was observed. Most of the people in Pentapadu village were using bore water and well water for drinking purposes. These waters are found to be hard waters and found to contain dissolved salts along with bacterial impurities.

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11. Lake and lake water use in Islam.

Mohammad Nasir Ahmad*

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“Have not those who disbelieve known that the heavens and the earth were joined together as one united piece, and then we parted them? And we have made from water every living thing. Will they not then believe?” [Qur‟an 21:30] In the Islamic belief water especially the pure water plays a crucial role not only during the bath for purity but also for Wazu (customary cleansing ritual before prayers) before offering the Namaj (Prayers) throughout the day. The lake water is nearly prohibited in performing the bath and Wudu in Islam because of the impurity found in it. Bhopal is also known as City of Lakes and having two major lakes i.e. Upper and Lower lakes of Bhopal. The Upper lake is shallow, highly stratified and oligotrophic lake while Lower lake is eutrophic. The Upper part of Bhoj Wetland has many direct and indirect uses. It is a major source of potable water contributing up to 50% in a normal weather year. The present paper shows that in the present scenario they are least bothered about the lake and its water conservation. Findings suggest that there is willingness in the community to join and contribute towards the Lake water conservation provided that the support of Immam/ Mufti etc (Religious Leaders) along with the Government and Community based organisation should be available to Guide and motivate this noble cause.

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12. Aerosol optical properties over various locations in the North-Eastern parts of peninsular India.

Srinivasa Rao Siriki*, K. Niranjan, D. Santhosh Kumar and B. Surya Narayana.

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The characterization of the spatial heterogeneity of aerosol optical properties over the Indian sub-continent, an intensive field campaign was organized by the Indian Space Research Organization (ISRO) under the ISRO-Geosphere Biosphere Programme, named as the ISRO-GBP Land Campaign-I. Several research groups carried a host of instruments on mobile platforms and made representative measurements at several locations covering the entire peninsular India and a few meridional transects. The team from Andhra University, Visakhapatnam, India made extensive measurements of aerosol optical depths and near surface mass-size distributions along with the surface meteorological parameters at several locations in the states of Andhra Pradesh, Orissa and Chattsigarh, in the northeastern part of peninsular India. The features of aerosol spectral optical depths and near surface aerosol mass size distributions over t is region are presented in this paper.

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