Conference Publications

Mosquitoes are the vectors for the dreadful diseases of mankind. In this study, laboratory experimentation of assessing the mosquito larvicidal potentiality of Moringa oleifera plant extract was carried out. Extracting solvents such as hexane, ethyl acetate and methanol were used and the larvicidal activity was assessed against Culex gelidus mosquito larvae under laboratory conditions. The effective larval mortality was found in the methanol extract at concentrations of 500 ?g/mL. The study thus provides evidence on the potential of indigenous plant extracts to serve as mosquito larvicides

Investigations on the production of xanthan with a locally isolated strain have been emphasized. We can isolate the strain by diluting serially the extract of infected banana petioles. By considering the cost-effective aspects of the xanthan fermentation process, agro industrial substrate sugarcane molasses was exploited. The effect of initial concentration of carbon source for the substrate was studied by varying the glucose concentration in the range of 2% to 6% (glucose equivalent). The time course of cell mass, xanthan production and substrate utilization were recorded in order to facilitate the kinetics of fermentation. The substrate chosen for study, sugarcane molasses resulted the xanthan gum yield of 27.2 g/l at a fermentation period of 96 h with the initial glucose concentration of 4%. The study confirmed that the logistic equation for growth kinetics and Luedeking-Piret model for substrate utilization and product formation model fits well with the experimental data

The aerobic treatment is considered one of the most efficient methods for treating several types of effluents. This is due to its scope for treating high rate of simply biodegradable matters and wastewater. Several researches have been widely conducted in order to enhance the performance of the aerobic process. The up flow aerobic sludge blanket (UASB) technology was considered as the most popular method in which the highest rate of organic materials can be removed. Nonetheless, the long start up interval of UASB reactor requires more understanding of the biological process inside the reactor. A pilot scale study was set up to investigate the principle design parameters of up flow aerobic sludge blanket (UASB) reactors for treating waste water of small communities in the tropical regions of India. A steel pipe with a diameter of 7cm and a height of 65cm was used as the reactor in which a digestion and a three phase separator element have a volume of 2.157*10^3 respectively. During this study, which lasted for 70 days, two distinct phases were carried out according to the ambient temperature. The temperature of the waste water entering the reactor was naturally ranged from 260c to 300c and no heat exchanger was used. The hydraulic retention time including 2,3 ,4 ,5 ,6 ,7 & 8 hours with various loading rates of 56 to 197 mg of COD/lit/day were examined. On the basis of the results in optimal hydraulic retention time and organic loading rate BOD5, COD and TSS was removed respectively.

Computers have contributed immensely in the identification of plants, where a real world plant images are taken and processed to extract the data from the images. This technique can be extended up to forestry, farming, botany and many allied fields. The crop growth, health analysis, disease detection, cure and detoxification are the most common applications. Plants can be used as detoxification agents but a very few medicinal plants are identified, which are available in specific regions in forest. The tribal use particular medicinal plants in a very appropriate proportion to cure many diseases. If proper methodologies are found to identify the medicinal plants, it will definitely help humans to improve their life and cure the diseases. Therefore, the medicinal plants available in the forest region are reviewed and its identification techniques are studied to develop suitable approach to further improve the system.

Cotton fibre is one of the most preferred raw materials in apparel industries due to its natural feel and comfort. Fibre reactive dye is the colourant of choice for dyeing cotton fabrics due to its brilliancy, variety of hue and high wet fastness properties. The major challenge in reactive dyeing of cotton is that require large amount of salt for exhaustion, in addition to that extensive water used for removing unfixed dye. The unfixed dye along with added salt increases effluent load on effluent treatment plants and limits the opportunities for recycling treated effluents and cause environmental pollution. This research paper focuses on the modification of cotton fabrics in such a way that the produced fabrics dyed with reactive dyes without the addition of salt thus reduced the effluent load and make the process more sustainable and greener process.

Our present study, we have reported the novel use of the aquous leaf extract of Gnetum ula to produce gold nanoparticles by reduction of AuCl4?ions. The phytochemicals present in the leaf extract served as effective reducing and capping agent. The gold nanoparticles obtained were characterized by UV–visible spectra, transmission electron microscopy (TEM) and X-ray diffraction (XRD). TEM studies showed the particles to be of various shapes and sizes. High-resolution TEM image confirmed a fcc phase and high crystallinity of the particles. The XRD patterns showed a (1 1 1) preferential orientation of the gold nanoparticles. Fourier transform infra-red spectroscopy (FTIR) measurements showed the GNPs having a coating of phenolic compounds indicating a possible role of biomolecules responsible for capping and efficient stabilization of the gold nanoparticles. AuNPs of Gnetum ula were having significant anti-arthritic activity.

Shipping covers 90% of goods transport globally. According to current estimates presented in Third IMO GHG Study 2014, international shipping emitted 796 million tones of CO2 in 2012, which is about 2.2% of the total global CO2 emission. One of the methods of reducing CO2 is by applying wind energy devices such as Flettner rotor for ship propulsion. Ships fitted with Flettner rotors are tested and simulated over various ship routes claiming a fuel saving up to 30% for average ship speed. In this paper the progress of Flettner rotor application exclusively for ship propulsion is reviewed and summarized.

The effect of antioxidant additive on engine performance, combustion and emission of a diesel engine fuelled with methyl ester of calophyllum biodiesel is studied. The antioxidant is mixed in various proportions from 50 mg to 200 mg with methyl esters of calophyllum biodiesel. It has been observed that the anti-oxidant mixture at 200 mg proportion is effective in controlling NOx and HC emission without any modification in the engine. Further there is a reduction in other emission such as CO and smoke of about 48% and 28.57 % respectively at full load condition when compared to the diesel fuel.

An Integration of video pre-processing and the improvement of frames plays a significant role in the field of image processing. Image segmentation is one of the most important in image analysis. This paper presents a Watershed based image segmentation technique with k-means bunch method and some enhancement design method for improvement of overall performance. Though the HSV color area was found to convey higher results compared to the RGB color area, in our experiments the RGB and HSV color areas were found to convey virtually equivalent results. Eventually, it had been set to use the HSV color area as a result of it gave higher results than the RGB color area just in case of “difficult Queries”. K-MEAN primarily based bunch rule has been projected and also the iterations taken was abundant less than that of K-MEAN and ANN based schemes. Moreover, K-MEAN based mostly schemes might discover all the peaks and hence, the categories accurately. The impact of the configuration, migration policy, rate of migration, and kind of migration on the speed convergence has been studied and it had been discovered that the migration policy and rate of migration greatly influence the convergence rate

Green Cloud refers to the prospective environmental benefits that information technology services are delivered via Internet with reliable and easy-accessible atmosphere. The datacenters can consume enormous amount of energy and also emits huge amount of carbons due to large number of cooling equipments, servers and storage systems infrastructure. The data center efficiency is one of the significant factors to enable cloud computing as green by lower energy usage and carbon emissions from business firm. The power efficiency of datacenters has most important impact on the total energy usage of Cloud computing. To achieve the reduction in energy consumption of a datacenter is to calculate the consumed energy in cooling equipments and other metrics with the help of Power Usage Effectiveness (PUE) which can be used to standardized how much energy is beneficially deployed versus how much is spent on other metrics such as power distribution, conditioning equipment, cooling infrastructures, storage and networking subsystems. The PUE of a datacenter is defined as the ratio of the total power consumption of data or switching center to the total power consumption of information technology equipments such as servers, storage and routers. By using the energy efficient technologies such as green broker framework, calculation of cost, energy and carbon emissions, the cloud providers can significantly improve the PUE of their datacenters and hence this approach can preserve the eco-friendly environment.