549 research outputs found

    Development of automatic speech recognition system for voice activated Ground Control system

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    This paper gives details of the development of a speech recognition system for voice activated Ground Control Station (GCS). The speech recognition is implemented using MATLAB and the results are validated against the Hidden Markov Model Tool Kit (HTK), an open source tool for speech recognition. The menu items of Mission planner, a typical open source GCS used for flying of Micro Air Vehicles (MAV) are used for the experiments

    Anisotropy of Lorentz Field Factors in Two Symmetric Homologous Series

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    Wear characterization of Al 7075 alloy hybrid composites

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    Aluminium alloy hybrid composites are in high demand for advanced scientific applications due to their high strength, low weight, and enhanced tribological properties. A hybrid composite of aluminium alloy (Al7075) and aluminium oxide (Al2O3) and E-glass shot fibres was produced using a sand moulding technique in an electric resistance furnace. The objective of this research was to look at the wear characteristics of Al7075-Al2O3-E-glass hybrid composites with various Al2O3 (3-12%) and E-glass weight percentages (2-6 percent). The sliding distance (500, 1000, and 1500 m), load (10, 20, and 30N), Al2O3 (3, 6, and 9 %), and E-glass (2-6 %) are the wear characteristics that are considered. Wear testing is carried out using pin-on-disc equipment (WTE 165 model, Version-EV00) in line with the Taguchi L9 orthogonal array. Taguchi analysis was done on the collected data to find SN plots. Regression analysis was done along with ANOVA to find relationships between different factors selected. In order to reduce the wear rate of hybrid composites, the optimal wear parameters are determined. As the percentage of reinforcements increased, the rate of deterioration decreased. SEM scans revealed the attachment and displacement of unintended wear debris, as well as the uniform distribution of Al2O3/E-glass particles

    Pulsed electric field processing of functional drink based on tender coconut water (Cococus nucifera L.) - nannari (Hemidesmus indicus) blended beverage

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    Tender coconut water (Cocos nucifera L.) Nannari extract (Hemidesmus indicus L.) ready-to serve (RTS) blended beverage were optimised. Response Surface Methodology (RSM) was employed to optimize the levels of independent variables (levels of tender coconut water, nannari extract and sugar). The responses of pH, ºBrix, CIE colour (L*, a* and b*) value and OAA were studied. The data obtained were analysed by multiple regression technique to generate suitable mathematical models. The developed blended beverage was processed using pulsed electric field (PEF) with electric field 31.2 kV/cm, 20 pulse widths at 100 Hz frequency to minimise nutritional and sensory attributes losses and compared with conventional thermal pasteurization (96 ºC for 360 s) with p-value of 8.03. Thermal pasteurization showed a significant (p<0.05) decrease in colour value, radical scavenging activity and overall acceptability after treatment and also during storage, when compared to PEF treated tender coconut water-nannari blended beverage. PEF treatment also achieved a 3.01 ± 0.69 log inactivation, similar to thermal pasteurization of native micro flora. PEF treated tender coconut water-nannari blended beverage was stable up to 120 days under ambient storage condition (27-30 °C)

    Decoding pituitary tumors: a systematic analysis of diagnostic methods and treatment modalities

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    Pituitary tumors are growths that form in the gland these tumors are rare representing 10-15% of all brain tumors. They can disrupt the production of hormones, in the body leading to symptoms related to hormone imbalance. This review offers an overview of the methods used for diagnosing and treating tumors. It is worth noting that relying solely on references may restrict the scope and depth of discussions about tumors in this paper. Suggestions for research include exploring diagnostic tools like molecular imaging and liquid biopsy to enhance early detection and accurate assessment of these tumors. Additionally, more research is required to understand the long-term effects and quality of life outcomes for patients undergoing treatment options for tumors. In conclusion, significant progress has been made in diagnosing and treating tumors over time. Advances in imaging technologies such as diffusion-weighted imaging and magnetic resonance spectroscopy have enhanced precision and treatment strategies for these tumors. The discussion also covers the roles of surgery, radiation therapy and medical interventions, in managing tumor growth and hormonal imbalances further advancements, in research and innovation are crucial, for enhancing our knowledge and treatment of tumors ultimately bringing outcomes for both patients and healthcare professionals.

    Catalogue of Types and of Sponges, Corals, Polychaetes, Crabs and Echinoderms in the Reference Collections of the Central Marine Fisheries Research Institute

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    The Reference collections of the Central Marine Fisheries Research Institute at Mandapam Camp have steadily grown in the past two decades since its inception. Although it was originally intended to have these collections primarily with a view to representing economically important groups from the marine habitats, in recent years, with a number of Research Scholars specializing in varied zoological groups out of taxonomic and academic interests, the collections of the Institute have increased substantially. In the present Bulletin are listed 46 Type species representing different phyla, 152 species of sponges,160 species of corals, 200 species of crabs and hermit-crabs and 185 species of echinoderms. Some of the species listed are new records from the seas around India or even from the Indian Ocean as reported by the research workers of this institute. For types, references are given followed by type category, registered number, locality and other particulars. For reference collections the name of the species is followed by registered number and localities of occurrence

    Review on cephalopod resources, biology and stock assessment in Indian seas

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    Cephalopods are fished from the seas around India from very early times and at present contribute one of the most important exploited marine fishery resources oj the country (between 4 and 5% of the all India production). The production, which remained at very low level up to the early seventies, has shown a remarkable increase crossing the 1,00,000 tonne mark in 1994. The taxonomy, biology and stock assessment of the various exploited species have been studied since the early seventies by the CMFRI. Studies indicate that uplo 1994 tlie exploitation has remained within rational limits in almost all maritime states. The recent rapid increase in production warrants close monitoring of this short-lived resource from the viewpoint of Judicious management
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