408 research outputs found

    Resonant Electro-Optic Frequency Comb

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    High speed optical telecommunication is enabled by wavelength division multiplexing, whereby hundreds of individually stabilized lasers encode the information within a single mode optical fiber. In the seek for larger bandwidth the optical power sent into the fiber is limited by optical non-linearities within the fiber and energy consumption of the light sources starts to become a significant cost factor. Optical frequency combs have been suggested to remedy this problem by generating multiple laser lines within a monolithic device, their current stability and coherence lets them operate only in small parameter ranges. Here we show that a broadband frequency comb realized through the electro-optic effect within a high quality whispering gallery mode resonator can operate at low microwave and optical powers. Contrary to the usual third order Kerr non-linear optical frequency combs we rely on the second order non-linear effect which is much more efficient. Our result uses a fixed microwave signal which is mixed with an optical pump signal to generate a coherent frequency comb with a precisely determined carrier separation. The resonant enhancement enables us to operate with microwave powers three order magnitude smaller than in commercially available devices. We can expect the implementation into the next generation long distance telecommunication which relies on coherent emission and detection schemes to allow for operation with higher optical powers and at reduced cost

    Randomised comparison of oral and vaginal misoprostol when combined with mifepristone for termination of second trimester pregnancy

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    Background: Objective of the study was to compare the effectiveness of vaginal (200µg) and oral (400µg) misoprostol when combined with mifepristone (200 mg) in termination of second trimester pregnancy.Methods: 60 women who were pregnant between 13 and 20 weeks were included in the study. They were divided into two groups by random sampling method and they all received 200 mg of mifepristone orally on day 1. 36 hours later they received 200 µg of misoprostol vaginally or 400 µg of misoprostol orally every 3 hours as determined by the random sampling method. Main outcome measures were induction abortion interval, complete abortion rate and side effects.Results: There was a statistical difference in the amount of misoprostol required in the oral and the vaginal group, the total dose being higher in the oral group. The mean induction-abortion interval in the vaginal group was 6.2 hrs  and oral group was 11.6 hrs and this difference was statistically significant. There was no statistical difference in the complete abortion rate of the two groups. There was no difference in the side effects caused by both routes of misoprostol administration.Conclusion: 200 µg misoprostol inserted vaginally is better than 400 µg of oral misoprostol, 36 hours after administration of tab. Mifepristone 200 mg for termination of second trimester pregnancy

    Ranking for Database in view of User Opinions

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    Numerous clients seeking web databases in areas, for example, vehicles, property and so forth has turned into an everyday errand. One of the issues with this assignment is ranking the after effects of a client inquiry. Prior systems for tending to this issue have used to just sort the database values. A consistent idea in the vast majority of these techniques is that ranking is done in a client and inquiry autonomous way. We proposed an inquiry and client subordinate methodology for ranking question results in web databases and it diminishes the quantity of question exchanges. This paper demonstrates to rank the information in database for a specific space in view of the client feelings. The model depends on the likeness client's showcase comparable question or distinctive inquiry ranking over the consequences of comparative inquiries

    Ayurvedic management of Diabetic Foot Ulcer - A Case Study

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    There are 424.9 million adults estimated to currently have diabetes globally.[1] Diabetic patients have an inherent risk of foot problems. Globally every 30 seconds, a major amputation occurs; 85% of which are preceded by trivial foot lesions.[2] In Ayurvedic literature, it is explained that Pidakas are formed in Adhoshaka in patients with Prameha due to the weakness of Rasayanis of lower limbs.[3] Such Pidakas if neglected over a period of time, without treatment will undergo Paaka and form a Vrana. Acharya Sushruta has described Shashti Upakramas (60 modalities) for the successful management of Vranas. Among them this article highlights the use of Shodhana, Kshara Varma, Chedana, Ropana and Bandhana Upakramas in the management of Diabetic Foot Ulcer/ Madhumehajanya Dushtavrana and also the need of Shastrakarma (surgical intervention) at the right time. In this study, Triphala Kashaya Avagaha and Pratisaraneeya kshara Karma for Vranashodhana, Chedana Karma followed by Ropana with Jatyaditaila was carried out. The course of treatment carried out brought about Dushtavranaavastha to Shuddhavranaavastha

    EVALUATION OF WOUND HEALING ACTIVITY OF POLYHERBAL FORMULATION

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    Objective: The present study describes the anti-microbial acivity of Acacia arabica and Butea monosperma bark extract.Methods: For this purpose aqueous extract of bark were prepared by Soxhlet extraction methodâ€. The experimentally induced burn wound model in rats by Excision methodâ€.Results: As a result of this study it was found that the extract of bark generally revealed antimicrobial and wound healing activity.Conclusion: The result of the study suggest that the Acacia arabica and Butea monosperma bark of polyherbal gel effective in accelerating wound healing process

    Role of diagnostic hysterolaparoscopy in the evaluation of female infertility

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    Background: Infertility is defined by WHO as a disease of the reproductive system defined by the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse. The prevalence of infertility is about 10%-15% of reproductive age couples. Female factor is responsible for 40-45% of etiology of infertility. Aim of the study was to evaluate the role of diagnostic hysterolaparoscopy in female infertility at a tertiary care centre.Methods: This is a retrospective hospital based study done at a tertiary care hospital attached to JSS Medical College, Mysuru between January 2017 and December 2018. Infertile women with primary or secondary infertility in the 18-40 years age group, with normal hormonal profile and no known male factor were included.Results: In our study, primary infertility was found in 77% of the 96 patients and secondary infertility was found in 23% of patients. In primary infertility, ovarian pathology was the most common finding while Endometriosis was the most common finding in secondary infertility group. 77 % patients were found to have bilaterally patent tubes while remaining had unilateral or bilateral blockage. On hysteroscopy, endometrial polyps were the commonest hysteroscopic finding in both groups.Conclusions: Combined hystero-laparoscopy is a safe, effective and reliable method in comprehensive evaluation of infertility. It helps in the diagnosis of pelvic pathology which may have been missed by routine examination and thereby helps in optimal management of female infertility

    Gene action and combining ability estimates of newly developed CMS based heterotic rice hybrids (Oryza sativa L.)

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    An insight knowledge nature and relative magnitude of gene actions involved and combining ability is useful for a breeder to assess nicking ability in self-pollinated crops. In this connection, an attempt was made to esti- mate the gene action and combining ability of 70 newly developed CMS based heterotic rice hybrids developed from ten newly developed CMS lines and seven testers were evaluated for grain yield and its components at Hybrid rice scheme, ZARS, V. C. Farm, Mandya. Among the lines, CMS 2 had significant gca effects at 1% level of significance in desired direction for four traits viz., panicle weight, pollen fertility, spikelet fertility and number of spikelets per pan- icle. Out of seven testers, KMR 3 found to be good general combiner for five traits viz., days to 50 per cent flower- ing, plant height, number of tillers per plant, number of panicles per plant and grain L/B ratio. Among the 70 hybrids, CMS1 × KMR3 was good specific combiner for grain yield per plant and grain L/B ratio. It further revealed that SCA variances were higher than the GCA variances for all the characters which indicated preponderance of non-additive gene action. Hence, CMS 2 and KMR 3 are identified as promising lines which can be used in further breeding pro- gramme

    The Clinical Relevance of Cement Volume in Percutaneous Vertebral Augmentation

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    Introduction: Vertebroplasty and Kyphoplasty are two forms of percutaneous vertebral augmentation (PVA), in which polymethylmethacrylate cement is used to stabilize vertebral compression fractures (VCF). This study sought to evaluate the relationship between cement volume and clinical outcomes, including pain reduction, opioid use, and complication rate. Methods: Retrospective chart review produced 88 patients who received PVA at a tertiary care outpatient pain clinic. Cement volume, type of PVA, gender, level (thoracic vs lumbar) were collected, as well as clinical outcomes of numeric pain score (NPS) reduction, opioid percent change (OPC), and complications. Both pre-procedure and post-procedure (between 2-4 weeks) data were collected. Results: Sixty-four patients (72.7%) had statistically significant NPS reduction of ≥50% pain (p Conclusion: Cement volume does not correlate with clinical outcomes of NPS reduction or OPC. Furthermore, our study reinforced PVA as a beneficial treatment for reducing pain and opioid consumption in patients with painful VCF
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