101 research outputs found

    Biodegradation by Fungi for Humans and Plants Nutrition

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    Fungi being achlorophyllous depends on other living organisms for their food either being parasite or saprophyte. Saprophytic fungi are good biodegraders. Through their enzymatic batteries, they can degrade any organic substances. Most of the time during the processes of degradation, macrofungi (mushrooms) are occurred as per the climatic conditions prevailing in the particular locations. Micro and macrofungi are considered a good source of human nutrition and medicine since time immemorial. Some of the fungi which are commonly known as mycorrhizae facilitate nutrients to more than 90% of green plants. Fungi play a basic role in plant physiology and help in the biosynthesis of different plant hormones that provides the flexibility of plant to withstand adverse environmental stress, the whole fungi are more friend than foe

    The Trends in the Evaluation of Fusarium Wilt of Chickpea

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    Chickpea (Cicer arietinum L.) is one of the important annual legume crops, cultivated throughout the India since ancient time. It is also grown in many countries of the world. The crop has been facing numerous biotic and abiotic constraints. Among biotic constraint crop affected adversely by diseases, caused by many pathogens. Ever since 1918 when for the first time wilt disease of chickpea was reported and Fusarium oxysporum f. sp. ciceri was the causal organism many strategies have been adopted to control the wilt disease. The controlling methods included conventional as well as modern one. However, more and more emphasis was given on biological control agents such as AM fungi and Trichoderma. The role of AM fungi have been evaluated for controlling the wilt disease similarly role of Trichoderma is thoroughly established biological control agent against Fusarium wilt. With the advent of modern tools and techniques developing markers, resistant varieties, all such sources enable us to reduce the effect of pathogens. Here an attempted has been made to acknowledge the trend of disease management and evaluation strategies of Fusarium wilt of chickpea for getting better yields of the crop

    Structure-property Characterisation at Nanoscale using In-situ TEM and SEM

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    In-situ electron microscopy is an emerging technique for real time visualisation of micro-structural changes of a specimen under some applied constraints inside microscope. In this study, in-situ nanoindentation experimentation on a carbon nanocoil inside transmission electron microscope has been reported. The elastic modulus of the carbon nanocoil is found to be 177 GPa. Similar experiments are also carried out on carbon nanotubes, but force response of carbon nanotubes is beyond the limit of sensors presently available. The present study also reports the in-situ dissolution behavior of the secondary phases of a 7xxx series aluminum alloy under high vacuum condition in scanning electron microscope (SEM) in the temperature range of 350 °C to 400 °C. We report for the first time using in-situ SEM technique that dissolution of the MgZn2-base phase present as eutectic and divorced eutectic forms could start at a temperature as low as 300 °C, although the usual homogenisation temperature of such alloys is always > 450 °C. Furthermore, the kinetics of dissolution of such phases, particularly when present in fine eutectic phase mixture, is significantly faster than what is observed under atmospheric pressure. It has been found that modification of surface composition under high vacuum condition plays a key role in the low temperature dissolution processes. It has further been found that the dissolution process does not start with the thinning of the IDC phase as proposed for Al-Zn-Mg-Cu alloys, rather it occurs by a combination of ‘spheroidisation’ and thinning process called ‘the thinning, discontinuation, and full dissolution’ (TDFD) mechanism. Results of the in-stu experiments under high vacuum are compared with the ex-situ dissolution experiments under normal atmospheric pressure

    Long Term Evolution Protocol: An Overview

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    ABSTRACT Wireless communications is becoming more essential than ever in today's modern society and access to information and knowledge will be of crucial differences between success and failure. We have already begun to see clear tendencies that the wireless communications is taking over more and more and makes by no means difference between different application areas. LTE (Long Term Evolution) is the newest radio access system technology based on OFDM, which aims at providing higher data rate services with lower latency. LTE can support not only fundamental telecommunication services but also interactive multimedia applications, and thus will become the main stream of broadband wirelesscommunications in the future. INTRODUCTION Long Term Evolution (LTE), commonly referred to as 4G -next generation wireless communications is the new standard for nationwide public safety broadband. This standard will allow access to digital technologies and deliver expanded capabilities to public safety practitioners in the field. LTE is the avenue for bringing public safety fully into the digital age. Technology devices and applications now being released on a daily basis, rival those that could be run only on in-office servers and desktops afew short years ago. This network will foster further development of applications customized for public safety and help make first responders' operations more effective and efficient

    Comparative morpho-micrometric analysis of some Bauhinia species (Leguminosae) from east coast region of Odisha, India

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    169-184Bauhinia vahlii has been reported for several medicinal properties, such as tyrosinase inhibitory, immunomodulatory and free radical scavenging activities. Bauhinia tomentosa and Bauhinia racemosa also possess anti-diabetic, anticancer, antidiabetic, anti-obesity and antihyperlipidemic activities. Therefore, the correct identification of these plants is critically important. The aim was to investigate the comparative morpho-micrometric analysis of 3 species of Bauhinia belonging to the family Leguminosae (Fabaceae) by using conventional as well as scanning electron microscopy to support species identification. In B. racemosa, epidermal cells are polygonal with anticlinical walls; whereas wavy walled cells are found in B. tomentosa and B. vahlii. Anisocytic stomata are present in B. racemosa, while B. tomentosa shows the presence of paracytic stomata and anomocytic stomata in B. vahlii. Stomatal numbers and stomatal indices were found to be more in B. vahlii than B. tomentosa and B. racemosa. On the other hand, uniseriate, unicellular covering trichomes are found in B. racemosa and B. tomentosa but B. vahlii contains only uniseriate, multicellular covering trichomes. Based on these micromorphological features, a diagnostic key was developed for identification of the particular species which helps a lot in pharmaceutical botany, taxonomy and horticulture, in terms of species identification

    Comparative morpho-micrometric analysis of some Bauhinia species (Leguminosae) from east coast region of Odisha, India

    Get PDF
    Bauhinia vahlii has been reported for several medicinal properties, such as tyrosinase inhibitory, immunomodulatory and free radical scavenging activities. Bauhinia tomentosa and Bauhinia racemosa also possess anti-diabetic, anticancer, antidiabetic, anti-obesity and antihyperlipidemic activities. Therefore, the correct identification of these plants is critically important. The aim was to investigate the comparative morpho-micrometric analysis of 3 species of Bauhinia belonging to the family Leguminosae (Fabaceae) by using conventional as well as scanning electron microscopy to support species identification. In B. racemosa, epidermal cells are polygonal with anticlinical walls; whereas wavy walled cells are found in B. tomentosa and B. vahlii. Anisocytic stomata are present in B. racemosa, while B. tomentosa shows the presence of paracytic stomata and anomocytic stomata in B. vahlii. Stomatal numbers and stomatal indices were found to be more in B. vahlii than B. tomentosa and B. racemosa. On the other hand, uniseriate, unicellular covering trichomes are found in B. racemosa and B. tomentosa but B. vahlii contains only uniseriate, multicellular covering trichomes. Based on these micromorphological features, a diagnostic key was developed for identification of the particular species which helps a lot in pharmaceutical botany, taxonomy and horticulture, in terms of species identification

    Multi-variate factorisation of numerical simulations

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    Factorisation (also known as "factor separation") is widely used in the analysis of numerical simulations. It allows changes in properties of a system to be attributed to changes in multiple variables associated with that system. There are many possible factorisation methods; here we discuss three previously proposed factorisations that have been applied in the field of climate modelling: the linear factorisation, the factorisation, and the factorisation. We show that, when more than two variables are being considered, none of these three methods possess all four properties of "uniqueness", "symmetry", "completeness", and "purity". Here, we extend each of these factorisations so that they do possess these properties for any number of variables, resulting in three factorisations - the "linear-sum"factorisation, the "shared-interaction"factorisation, and the "scaled-residual"factorisation. We show that the linear-sum factorisation and the shared-interaction factorisation reduce to be identical in the case of four or fewer variables, and we conjecture that this holds for any number of variables. We present the results of the factorisations in the context of three past studies that used the previously proposed factorisations

    Physics Potential of the ICAL detector at the India-based Neutrino Observatory (INO)

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    The upcoming 50 kt magnetized iron calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO) is designed to study the atmospheric neutrinos and antineutrinos separately over a wide range of energies and path lengths. The primary focus of this experiment is to explore the Earth matter effects by observing the energy and zenith angle dependence of the atmospheric neutrinos in the multi-GeV range. This study will be crucial to address some of the outstanding issues in neutrino oscillation physics, including the fundamental issue of neutrino mass hierarchy. In this document, we present the physics potential of the detector as obtained from realistic detector simulations. We describe the simulation framework, the neutrino interactions in the detector, and the expected response of the detector to particles traversing it. The ICAL detector can determine the energy and direction of the muons to a high precision, and in addition, its sensitivity to multi-GeV hadrons increases its physics reach substantially. Its charge identification capability, and hence its ability to distinguish neutrinos from antineutrinos, makes it an efficient detector for determining the neutrino mass hierarchy. In this report, we outline the analyses carried out for the determination of neutrino mass hierarchy and precision measurements of atmospheric neutrino mixing parameters at ICAL, and give the expected physics reach of the detector with 10 years of runtime. We also explore the potential of ICAL for probing new physics scenarios like CPT violation and the presence of magnetic monopoles.Comment: 139 pages, Physics White Paper of the ICAL (INO) Collaboration, Contents identical with the version published in Pramana - J. Physic

    The hydrological cycle and ocean circulation of the Maritime Continent in the Pliocene: results from PlioMIP2

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    The Maritime Continent (MC) forms the western boundary of the tropical Pacific Ocean, and relatively small changes in this region can impact the climate locally and remotely. In the mid-Piacenzian warm period of the Pliocene (mPWP; 3.264 to 3.025 Ma) atmospheric CO2 concentrations were ∼ 400 ppm, and the subaerial Sunda and Sahul shelves made the land–sea distribution of the MC different to today. Topographic changes and elevated levels of CO2, combined with other forcings, are therefore expected to have driven a substantial climate signal in the MC region at this time. By using the results from the Pliocene Model Intercomparison Project Phase 2 (PlioMIP2), we study the mean climatic features of the MC in the mPWP and changes in Indonesian Throughflow (ITF) with respect to the preindustrial. Results show a warmer and wetter mPWP climate of the MC and lower sea surface salinity in the surrounding ocean compared with the preindustrial. Furthermore, we quantify the volume transfer through the ITF; although the ITF may be expected to be hindered by the subaerial shelves, 10 out of 15 models show an increased volume transport compared with the preindustrial. In order to avoid undue influence from closely related models that are present in the PlioMIP2 ensemble, we introduce a new metric, the multi-cluster mean (MCM), which is based on cluster analysis of the individual models. We study the effect that the choice of MCM versus the more traditional analysis of multi-model mean (MMM) and individual models has on the discrepancy between model results and data. We find that models, which reproduce modern MC climate well, are not always good at simulating the mPWP climate anomaly of the MC. By comparing with individual models, the MMM and MCM reproduce the preindustrial sea surface temperature (SST) of the reanalysis better than most individual models and produce less discrepancy with reconstructed sea surface temperature anomalies (SSTA) than most individual models in the MC. In addition, the clusters reveal spatial signals that are not captured by the MMM, so that the MCM provides us with a new way to explore the results from model ensembles that include similar models
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