607 research outputs found

    A novel scheduling algorithm to maximize the D2D spatial reuse in LTE networks

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    In order to offload base station (BS) traffic and to enhance efficiency of spectrum, operators can activate many Device-to-Device (D2D) pairs or links in LTE networks. This increases the overall spectral efficiency because the same Resource Blocks (RBs) are used across cellular UEs (CUEs) (i.e., all UEs connected to BS for both C-Plane and D-plane communication) and D2D links (i.e., where the UEs are connected to BS only for C-plane communication). However, significant interference problems can be caused by D2D communications as the same RBs are being shared. In our work, we address this problem by proposing a novel scheduling algorithm, Efficient Scheduling and Power control Algorithm for D2Ds (ESPAD), which reuses the same RBs and tries to maximize the overall network throughput without affecting the CUEs throughput. ESPAD algorithm also ensures that Signal to Noise plus Interference Ratio (SINR) for each of the D2D links is maintained above a certain predefined threshold. The aforementioned properties of ESPAD algorithm makes sure that the CUEs do not experience very high interference from the D2Ds. It is observed that even when the SINRdrop (i.e., maximum permissible drop in SINR of CUEs) is as high as 10 dB, there is no drastic decrease in CUEs throughput (only 3.78%). We also compare our algorithm against other algorithms and show that D2D throughput improves drastically without undermining CUEs throughput

    Participatory management for conservation of seahorses in the Gulf of Mannar, South-east coast of India

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    The Inception Workshop of the research project “Participatory management for conservation of seahorses in the Gulf of Mannar, south-east coast of India” was organized on 27 December 2014 at the Mandapam Regional Centre of the Central Marine Fisheries Research Institute (ICAR), Mandapam Camp, Tamil Nadu. The workshop was aimed to mark the beginning of the project activities in the Gulf of Mannar and also to bring to one place all the concerned stakeholders who are directly or indirectly associated with sustainable management of seahorse fishery and conservation, and to inform them about the project, its objectives and the expectations. The workshop was also aimed to discuss and get feedback on the methodology and approach for implementation of the project activities such as field surveys and interviews with the stakeholders. The workshop also focused to gather valuable inputs from various stakeholders, which are vital for the on-going project

    Human Virtues in Kalitthokai

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    In literature, morality is referred to at several levels. Kalitthokai, one of the Ettutthokai books, deals with the many virtues of life. Helping the poor, hospitality, medicine, and natural ethics are loudly proclaimed to the human race. Many songs show that youth, wealth, body, etc., are not permanent. Like 'Pasumarathani (something learned properly at a young age)', it instills in the mind that living by virtue is the culture and specialty of Tamils. The qualities of the individual and the householder are highlighted. This book is a book that deals with the principles of ethics in a simple way. In the Sangam literature, morality is not insisted upon forcibly, but where necessary it can be seen that moral ideas are suggested in harmony with the theme of the song. Moreover, virtue was codified in harmony with life, and happiness and wealth were regulated to be in harmony with virtue. They convey the ethical thoughts that flow between the songs

    K-matrices for non-abelian quantum Hall states

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    Two fundamental aspects of so-called non-abelian quantum Hall states (the q-pfaffian states and more general) are a (generalized) pairing of the participating electrons and the non-abelian statistics of the quasi-hole excitations. In this paper, we show that these two aspects are linked by a duality relation, which can be made manifest by considering the K-matrices that describe the exclusion statistics of the fundamental excitations in these systems.Comment: LaTeX, 12 page

    COMBINED EFFECT OF SELECTIVE BIOACTIVE COMPOUNDS FROM PLANT ORIGIN IN AN ANIMAL MODEL OF ANXIETY

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    Objective: Evidence is emerging that specific combinations of bioactive compounds may be far more effective in protecting against several diseases as compared to the effect of a single compound. The present study was aimed to investigate the interactive effect of Diosgenin and Silymarin, the bioactive compounds from plant origin in an animal model of anxiety. Methods: Albino wistar rats of either sex were divided into five groups and treated for 5 d. Group I and II served as control and standard and test groups were treated with Diosgenin (100 mg/kg, p. o.), Silymarin (100 mg/kg, p. o.) and combination of Diosgenin (50 mg/kg, p. o.)+Silymarin (50 mg/kg, p. o.), respectively. Diazepam (1 mg/kg, i. p.) was used as a standard for the study. Anxiolytic effects were studied in the Elevated plus-maze, Hole-board test and Light/Dark model. Results: The results suggested that Diosgenin when given alone at a dose of 100 mg/kg, does not shown significant anxiolytic effect when as compared with control. Whereas, the compound Silymarin (100 mg/kg) shown significant anti-anxiety effect (P<0.01), independently. The same two bioactive compounds, given in combination at a dose of 50 mg/kg, (each), exhibited significant anxiolytic-like effect, potentially. Conclusion: It can be concluded that Diosgenin has got a synergistic effect on anti-anxiety action when given in combination with Silymarin

    Efficient utilization of xylanase and lipase producing thermophilic marine actinomycetes (Streptomyces albus and Streptomyces hygroscopicus) in the production of ecofriendly alternative energy from waste

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    The marine actinomycetes strain MAC 6 and MAC 14 were used in the production of xylanase and lipase enzyme using wheat bran as an inducer with oats, soy meal and ground nut oil cake. Two strains showed higher xylanase and lipase activity at pH 10.0 and 50°C among 30 actinomycetes screened from sediments of Tiruchendhur coastal areas of Tamil Nadu. The enzymes were produced by solid state fermentation by using 70% of moisture content. More biogas production was observed in oil cake and straw waste with the pretreatment of xylanase and lipase producing strains within short hydraulic retention time.Key words: Biogas, groundnut oilcake, lipase, marine actinomycete, rice straw, solid state fermentation, thermophilic, wheat bran, xylanase

    Ecofriendly application of cellulase and xylanase producing marine Streptomyces clavuligerus as enhancer in biogas production from waste

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    The marine actinomycete strain MAC 9 was used for the production of cellulase and xylanase from wheat bran with inducers oats and soy meal as substrate. Out of 30 actinomycetes screened from sediments of Tiruchendhur coastal areas of Tamil Nadu, India only 8 strains showed both cellulase and xylanase activity. The marine actinomycete exhibited highest enzyme activity at alkaline pH 8-9 with temperature ranging from 40-55°C. The enzymes were used in pretreatment of rice and wheat straw waste for biogas  production. More biogas production was observed in the agricultural waste with the pretreatment of  cellulase, xylanase and the combination of enzymes.Key words: Biogas, cellulase, energy, marine actinomycete, solid state fermentation, thermophilic, wheat bran, xylanase

    The natural history of primary sclerosing cholangitis in 781 children. A multicenter, international collaboration

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    There are limited data on the natural history of primary sclerosing cholangitis (PSC) in children. We aimed to describe the disease characteristics and long-term outcomes of pediatric PSC. We retrospectively collected all pediatric PSC cases from 36 participating institutions and conducted a survival analysis from the date of PSC diagnosis to dates of diagnosis of portal hypertensive or biliary complications, cholangiocarcinoma, liver transplantation, or death. We analyzed patients grouped by disease phenotype and laboratory studies at diagnosis to identify objective predictors of long-term outcome. We identified 781 patients, median age 12 years, with 4,277 person-years of follow-up; 33% with autoimmune hepatitis, 76% with inflammatory bowel disease, and 13% with small duct PSC. Portal hypertensive and biliary complications developed in 38% and 25%, respectively, after 10 years of disease. Once these complications developed, median survival with native liver was 2.8 and 3.5 years, respectively. Cholangiocarcinoma occurred in 1%. Overall event-free survival was 70% at 5 years and 53% at 10 years. Patient groups with the most elevated total bilirubin, gamma-glutamyltransferase, and aspartate aminotransferase-to-platelet ratio index at diagnosis had the worst outcomes. In multivariate analysis PSC-inflammatory bowel disease and small duct phenotypes were associated with favorable prognosis (hazard ratios 0.6, 95% confidence interval 0.5-0.9, and 0.7, 95% confidence interval 0.5-0.96, respectively). Age, gender, and autoimmune hepatitis overlap did not impact long-term outcome. CONCLUSION: PSC has a chronic, progressive course in children, and nearly half of patients develop an adverse liver outcome after 10 years of disease; elevations in bilirubin, gamma-glutamyltransferase, and aspartate aminotransferase-to-platelet ratio index at diagnosis can identify patients at highest risk; small duct PSC and PSC-inflammatory bowel disease are more favorable disease phenotypes

    In Vitro Anti-plasmodial activity of Trigonella foenum–graecum L.

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    Developing countries, where malaria is one of the most prevalent diseases, still rely on traditional medicine as a source for the treatment of this disease. For the present study, Trigonella foenum-graecum L. (fenugreek) were collected from Coimbatore, Tamilnadu, India. The test plant has been used in India by traditional healers for the treatment of fever as well as other diseases. The active principle was extracted out in different solvent systems to assess the anti-plasmodial potential, with an aim that they can further be utilized to formulate drugs. In vitro anti-plasmodial assay of the extracted fractions of fenugreek leaves was carried out using laboratory adapted chloroquine sensitive and resistant Plasmodium falciparum isolates. Schizont maturation inhibition assay was adopted to analyze the potential of the extracts. Ethanol extract (50%) seemed to possess profound anti-plasmodial activity with IC50 value of 8.75 ± 0.35 µg ml−1 and 10.25 ± 0.35 µg ml−1 against chloroquine sensitive and resistant P. falciparum isolates, respectively. Among the investigated six fractions of the plant extracts, two were found to have significant anti-plasmodial activity with IC50 values <10 µg ml−1, namely ethanol and butanol extracts. Two extracts chloroform and ethyl acetate showed moderate activity with IC50 values ranging from 10 to 20 µg ml−1, and the other two extracts, hexane and water appeared to be inactive with IC50 values >85 µg ml−1. In addition, preliminary phytochemical screening of the various extracts indicated the presence of alkaloids, saponin, tannin like phenolic compounds, flavonoids and steroids

    5G-SMART DIABETES: TOWARD PERSONALIZED DIABETES DIAGNOSIS WITH HEALTHCARE BIG DATA CLOUDS

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    This project uses today’s 5G technology to monitor condition of diabetic patients with low cost. Now-a-days many peoples are suffering with diabetic disease due to work stress or unhealthy lifestyles and peoples will not know about the current health condition till symptoms appear or diagnosis through medical check-up and the condition of disease will be severe by that time and there is no possible way to get that intimation prior. Diabetes will be of two type’s diabetes-1 and diabetes-2. Diabetes-2 require hospitalization and in diabetes-1 condition we can monitor patient and alert him or doctors about his current conditio
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