84 research outputs found

    Broadband study of blazar 1ES 1959+650 during flaring state in 2016

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    Aim : The nearby TeV blazar 1ES 1959+650 (z=0.047) was reported to be in flaring state during June - July 2016 by Fermi-LAT, FACT, MAGIC and VERITAS collaborations. We studied the spectral energy distributions (SEDs) in different states of the flare during MJD 57530 - 57589 using simultaneous multiwaveband data to understand the possible broadband emission scenario during the flare. Methods : The UV/optical and X-ray data from UVOT and XRT respectively on board Swift and high energy γ\gamma-ray data from Fermi-LAT are used to generate multiwaveband lightcurves as well as to obtain high flux states and quiescent state SEDs. The correlation and lag between different energy bands is quantified using discrete correlation function. The synchrotron self Compton (SSC) model was used to reproduce the observed SEDs during flaring and quiescent states of the source. Results : A decent correlation is seen between X-ray and high energy γ\gamma-ray fluxes. The spectral hardening with increase in the flux is seen in X-ray band. The powerlaw index vs flux plot in γ\gamma-ray band indicates the different emission regions for 0.1 - 3 GeV and 3-300 GeV energy photons. Two zone SSC model satisfactorily fits the observed broadband SEDs. The inner zone is mainly responsible for producing synchrotron peak and high energy γ\gamma-ray part of the SED in all states. The second zone is mainly required to produce less variable optical/UV and low energy γ\gamma-ray emission. Conclusions : Conventional single zone SSC model does not satisfactorily explain broadband emission during observation period considered. There is an indication of two emission zones in the jet which are responsible for producing broadband emission from optical to high energy γ\gamma-rays.Comment: 11 pages, 12 figures, Accepted in A&

    Aquatic flora and fauna associated with the freshwater snail Lymnaea acuminata in Kham river at Aurangabad (M.S.)

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    The present study includes considerable variations in aquatic flora and fauna recorded in Kham River during the period of Jun. 2009 – Sept. 2009. Lymnaea work as vector for various trematode pathogens and it is common in the bitant of the Kham River.Hence the present investigation was undertaken to study other associate flora and fauna in the vicinity of the snail Lymnaea acuminata with their relationship. Density of the molluscan species carried out with the study

    Cercarial development of Fasciola within the intermediate snail host Lymnaea acuminata from river waters of Aurangabad (M.S.) India

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    Collection of snail specimens of Lymnaea acuminata was done from river water around the city Aurangabad. Naturally infected snails were identified and dissected in order to study the cercarial development within the snail body. Infected gonads were collected and got processed for general histological study in order to investigate cercarial development. Light microscopic observations of the gonadal sections show various stages of cercarial development within redia of liver fluke, Fasciola. Redia are formed after completion of the sporocyst development. Fully developed rediae are polymorphic shaped sacks having mouth opening at the anterior end. Just behind the collar region at one site there is presence of birthpore which acts as an exit for developing cercaria. From the germinal layer proliferation of germ balls take place vegetatively. At the initial stages of germball development, it is simple ball of cells. On further development it becomes elongated with mesenchyme tissue.Advancement in further development, there starts the formation of digestive system with distinct intestinal lobes or caecae. During post developmental stages there is appearance of pharynx, suckers and tail of cercaria. It seems that cercaria move towards anterior region with progress in their development. Fully developed cercaria having distinct tail gets birth through birthpore

    INTEGRATION OF CAD AND CAE IN SME’S FOR PRODUCT DEVELOPMENT

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    Small manufacturing enterprises face a number of challenges when integrating computer aided design (CAD) tools and computer-aided engineering (CAE) tools into their design processes. One of the most significant challenges is interoperability across the wide range of commercial CAD and CAE tools. Although many of these tools support industry data standards and claim to be interoperable, the connection between them is not seamless. This paper summarizes studies of tool integration activities at one small manufacturer. The paper shows the enhancement of the product development process resulting from replacement of a two dimensional CAD system with a three-dimensional CAD system and creation of an inhouse capability to perform finite element analysis (FEA), replacing analysis that had previously been outsourced. As a result of these experiences, the manufacturer learned that improved productivity and superior designs could be obtained by integrating analysis into the design process at the earlier stages of conceptual and preliminary design

    Automatic Defect Detection and Classification Technique from Image Processing

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    Image processing is one of the most increasing areas in computer science. As technology advances, the analog imaging is switched to the digital system. Every day, we capture huge amount of images which are very difficult to maintain manually within a certain period of time. So the concept and application of the digital imaging grows rapidly. Digital image processing[7] is used to extract various features from images. This is done by computers automatically without or with little human intervention. One of the most important operations on digital image[2] is to identify and classify various kinds of defects. Thus to detect the defects from any image some methods are developed. In this paper a defect detection method for ceramic tiles is proposed. The proposed method is tested for images with resolution 1920×1080 pixels. The method has tested only for defects such as blobs and cracks

    DESIGN AND EVALUATION OF NOVEL TOPICAL GEL OF TINOSPORA CORDIFOLIA AS ANTIMICROBIAL AGENT

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    Objective: The present study deals with topical formulations of a bioactive extract of Tinospora cordifolia and its evaluation.Methods: Dried, powdered stem was extracted with chloroform using ultra-sonication method for 3 hrs. Topical formulations like gels containingchloroform extract were formulated using various gelling agents. These gels were evaluated for physicochemical parameters, viscosity, spreadaibility,and antimicrobial activity.Results: A topical gel was successfully formulated containing bioactive chloroform extract of T. cordifolia. The gel was very effective as antimicrobialformulations.Conclusion: These kinds of formulations can be very promising wound healing medicines with ease of use and no side effects.Keywords: Topical gel, Tinospora Cordifolia, Anitmictobia

    INTEGRATION OF CAD AND CAE IN SME’S FOR PRODUCT DEVELOPMENT

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    Small manufacturing enterprises face a number of challenges when integrating computer aided design (CAD) tools and computer-aided engineering (CAE) tools into their design processes. One of the most significant challenges is interoperability across the wide range of commercial CAD and CAE tools. Although many of these tools support industry data standards and claim to be interoperable, the connection between them is not seamless. This paper summarizes studies of tool integration activities at one small manufacturer. The paper shows the enhancement of the product development process resulting from replacement of a two dimensional CAD system with a three-dimensional CAD system and creation of an inhouse capability to perform finite element analysis (FEA), replacing analysis that had previously been outsourced. As a result of these experiences, the manufacturer learned that improved productivity and superior designs could be obtained by integrating analysis into the design process at the earlier stages of conceptual and preliminary design.</jats:p
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