4,424 research outputs found

    Cardiac rehabilitation versus standard care after aortic aneurysm repair (Aneurysm CaRe): study protocol for a randomised controlled trial.

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    BACKGROUND: Abdominal and thoracic aortic aneurysms (A/TAA) are an important cause of mortality amongst the older population. Although A/TAA repair can be performed with low peri-operative risk, overall life expectancy remains poor in the years that follow surgery. The majority of deaths are caused by heart attack or stroke, which can both be prevented by cardiac rehabilitation (CR) in patients with clinically-manifest coronary artery disease. A Cochrane review has urged researchers to widen the use of CR to other populations with severe cardiovascular risk, and patients surviving A/TAA repair appear ideal candidates. However, it is unknown whether CR is feasible or acceptable to A/TAA patients, who are a decade older than those currently enrolling in CR. Aneurysm-CaRe is a feasibility randomised controlled trial (RCT) that will address these issues. METHODS AND DESIGN: Aneurysm-CaRe is a pilot RCT of CR versus standard care after A/TAA repair, with the primary objectives of estimating enrolment to a trial of CR after A/TAA repair and estimating compliance with CR amongst patients with A/TAA. Aneurysm-CaRe will randomise 84 patients at two sites. Patients discharged from hospital after elective A/TAA repair will be randomised to standard care or enrolment in their local CR programme with a protocolised approach to medical cardiovascular risk reduction. The primary outcome measures are enrolment in the RCT and compliance with CR. Secondary outcomes will include phenotypic markers of cardiovascular risk and smoking cessation, alongside disease-specific and generic quality-of-life measures. TRIAL REGISTRATION: ISRCTN 65746249 5 June 2014

    Remote sensing of spectral signatures of tropospheric aerosols

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    With the launch of the German Aerospace Agency's (DLR) Modular Opto-electronic Scanner (MOS) sensor on board the Indian Remote Sensing satellite (IRS-P3) launched by the Indian Space Research Organization (ISRO) in March 1996, 13 channel multi-spectral data in the range of 408 to 1010nm at high radiometric resolution, precision, and with narrow spectral bands have been available for a variety of land, atmospheric and oceanic studies. We found that these data are best for validation of radiative transfer model and the corresponding code developed by one of the authors at Space Applications Centre, and called ATMRAD (abbreviated for ATMospheric RADiation). Once this model/code is validated, it can be used for retrieving information on tropospheric aerosols over ocean or land. This paper deals with two clear objectives, viz., (1) Validation of ATMRAD model/code using MOS data and synchronously measured atmospheric data, and if found performing well, then to (2) derive relationship between MOS radiances and Aerosol Optical Thickness (AOT). The data validation procedure essentially involves near-synchronous measurements of columnar aerosol optical thickness and altitude profiles of aerosol concentration using ground-based multi-filter solar radiometers and Argon-ion Lidar, respectively and computation of the top-of-the-atmosphere (TOA) radiances from a low reflecting target (near clear water reservoir in the present study) using the ATMRAD model. The results show that the model performance is satisfactory and a relationship between the spectral parameters of MOS radiances and aerosol optical thickness can be established. In this communication, we present the details of the experiments conducted, database, validation of the ATMRAD model and development of the relationship between AOT and MOS radiance

    Facilitating motor imagery-based brain–computer interface for stroke patients using passive movement

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    Motor imagery-based brain–computer interface (MI-BCI) has been proposed as a rehabilitation tool to facilitate motor recovery in stroke. However, the calibration of a BCI system is a time-consuming and fatiguing process for stroke patients, which leaves reduced time for actual therapeutic interaction. Studies have shown that passive movement (PM) (i.e., the execution of a movement by an external agency without any voluntary motions) and motor imagery (MI) (i.e., the mental rehearsal of a movement without any activation of the muscles) induce similar EEG patterns over the motor cortex. Since performing PM is less fatiguing for the patients, this paper investigates the effectiveness of calibrating MI-BCIs from PM for stroke subjects in terms of classification accuracy. For this purpose, a new adaptive algorithm called filter bank data space adaptation (FB-DSA) is proposed. The FB-DSA algorithm linearly transforms the band-pass-filtered MI data such that the distribution difference between the MI and PM data is minimized. The effectiveness of the proposed algorithm is evaluated by an offline study on data collected from 16 healthy subjects and 6 stroke patients. The results show that the proposed FB-DSA algorithm significantly improved the classification accuracies of the PM and MI calibrated models (p < 0.05). According to the obtained classification accuracies, the PM calibrated models that were adapted using the proposed FB-DSA algorithm outperformed the MI calibrated models by an average of 2.3 and 4.5 % for the healthy and stroke subjects respectively. In addition, our results suggest that the disparity between MI and PM could be stronger in the stroke patients compared to the healthy subjects, and there would be thus an increased need to use the proposed FB-DSA algorithm in BCI-based stroke rehabilitation calibrated from PM

    A Case Study on Role of Virechana Karma as a conservative management in Metabolic Syndrome (Santarpana Janya Vyadhi)

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    The prevalence of lifestyle diseases such as hypertension, diabetes mellitus, dyslipidemia, and obesity has skyrocketed in recent years. Among these, Metabolic Syndrome (MS) stands out as a significant public health challenge worldwide, fueled by the rise in obesity and sedentary living habits. This complex condition is characterized by a cluster of interrelated health issues, including abdominal obesity, insulin resistance, hypertension, and hyperlipidemia, all of which significantly increase the risk of cardiovascular diseases and other chronic illnesses. As there is no direct reference of Metabolic Syndrome in Ayurveda. But due to resemblance of its etiopathogenesis and clinical features, it may come under broad umbrella of Santarpanjanyavyadhi, Medopradoshaja Vikara and Medosroto Dusti. Virechana Karma is line of treatment for Santarpanajanya Vyadhi and Bahudoshawastha. The aim of this study was to treat Metabolic Syndrome with Virechana Karma. Weight, Waist circumference, Lipid profile was opted for the assessment of Metabolic Syndrome before and after the treatment. This case study involved a 41-year-old female patient presenting with weight gain, drowsiness, bodily heaviness, disturbed thyroid profile, and hyperacidity in the last four years. Initial assessments revealed elevated levels of total cholesterol, VLDL, and triglycerides. After undergoing Virechana Karma (therapeutic purgation), the patient demonstrated significant improvements in lipid profiles, complete remission of symptoms, and a remarkable weight loss of 4 kg. The impressive outcomes can be attributed to the correction of Agni (digestive fire) through Virechana Karma and the elimination of abnormal lipids from the body. This study strongly supports the efficacy and safety of Virechana Karma in the management of metabolic syndrome

    Study of the Decays B0 --> D(*)+D(*)-

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    The decays B0 --> D*+D*-, B0 --> D*+D- and B0 --> D+D- are studied in 9.7 million Y(4S) --> BBbar decays accumulated with the CLEO detector. We determine Br(B0 --> D*+D*-) = (9.9+4.2-3.3+-1.2)e-4 and limit Br(B0 --> D*+D-) < 6.3e-4 and Br(B0 --> D+D-) < 9.4e-4 at 90% confidence level (CL). We also perform the first angular analysis of the B0 --> D*+D*- decay and determine that the CP-even fraction of the final state is greater than 0.11 at 90% CL. Future measurements of the time dependence of these decays may be useful for the investigation of CP violation in neutral B meson decays.Comment: 21 pages, 5 figures, submitted to Phys. Rev.

    Search for the Decays B^0 -> D^{(*)+} D^{(*)-}

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    Using the CLEO-II data set we have searched for the Cabibbo-suppressed decays B^0 -> D^{(*)+} D^{(*)-}. For the decay B^0 -> D^{*+} D^{*-}, we observe one candidate signal event, with an expected background of 0.022 +/- 0.011 events. This yield corresponds to a branching fraction of Br(B^0 -> D^{*+} D^{*-}) = (5.3^{+7.1}_{-3.7}(stat) +/- 1.0(syst)) x 10^{-4} and an upper limit of Br(B^0 -> D^{*+} D^{*-}) D^{*\pm} D^\mp and B^0 -> D^+ D^-, no significant excess of signal above the expected background level is seen, and we calculate the 90% CL upper limits on the branching fractions to be Br(B^0 -> D^{*\pm} D^\mp) D^+ D^-) < 1.2 x 10^{-3}.Comment: 12 page postscript file also available through http://w4.lns.cornell.edu/public/CLNS, submitted to Physical Review Letter

    Improved Measurement of the Pseudoscalar Decay Constant fDsf_{D_{s}}

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    We present a new determination of the Ds decay constant, f_{Ds} using 5 million continuum charm events obtained with the CLEO II detector. Our value is derived from our new measured ratio of widths for Ds -> mu nu/Ds -> phi pi of 0.173+/- 0.021 +/- 0.031. Taking the branching ratio for Ds -> phi pi as (3.6 +/- 0.9)% from the PDG, we extract f_{Ds} = (280 +/- 17 +/- 25 +/- 34){MeV}. We compare this result with various model calculations.Comment: 23 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLN

    Measurement of B(/\c->pKpi)

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    The /\c->pKpi yield has been measured in a sample of two-jet continuum events containing a both an anticharm tag (Dbar) as well as an antiproton (e+e- -> Dbar pbar X), with the antiproton in the hemisphere opposite the Dbar. Under the hypothesis that such selection criteria tag e+e- -> Dbar pbar (/\c) X events, the /\c->pkpi branching fraction can be determined by measuring the pkpi yield in the same hemisphere as the antiprotons in our Dbar pbar X sample. Combining our results from three independent types of anticharm tags, we obtain B(/\c->pKpi)=(5.0+/-0.5+/-1.2)

    Histone deacetylase inhibitors: pharmacotherapeutic implications as epigenetic modifier

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    Epigenetic modifications such as acetylation and deacetylation of histone proteins play a decisive role in transcriptional alteration and expression of genes. Acetylation is catalysed by the histone acetyl transferases enzymes and activates expression of genes by converting chromatin into a less compact, transcriptionally active state. Histone deacetylases enzymes catalyze deacetylation that condenses chromatin into a closed structure .Consequently transcriptional factors are unable to access DNA and gene expression is suppressed. Balanced activity of HATs and HDACS is essential for normal gene expression. Increased HDAC activity can lead to imbalance in protein acetylation resulting in hypoacetylation, tight chromatin structure and suppression of various genes. This aberrant suppression of genes is the hallmark of several malignant and other diseases including neurodegenerative disorders. Histone Deacetylase Inhibitors (HDACIs) have potential to restore the balance of histone acetylation that reverses the silencing of pathological genes. Thus HDACIs modify expression of genes without affecting sequence of DNA and act as epigenetic modifiers. Vorinostat and romidepsin are FDA approved HDACIs. Valproic acid, belinostat and many others are in different phases of clinical trials. This review article explores the target based epigenetic mechanisms as well as existing and potential therapeutic role of HDACIs in various malignant and non-malignant diseases. Data sources were articles published in medical journals and bibliographic database Medline

    Dashmoola in Stri Roga: A Review on its Therapeutic Benefits

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    Dashmoola is a prominent Ayurvedic formulation that consists of ten medicinal roots, commonly utilized in the treatment of various gynecological issues, collectively referred to as Stri Roga. This review examines the therapeutic advantages of Dashmoola for Stri Roga, highlighting its pharmacological attributes, historical applications, and validation through contemporary scientific research. It offers a thorough analysis of Dashmoola’s influence on menstrual health, pregnancy, postpartum care, and reproductive wellness. The formulation’s botanical components feature herbs known for their significant anti-inflammatory, analgesic, and adaptogenic characteristics. These attributes render Dashmoola useful in addressing conditions such as menstrual irregularities, difficult periods, heavy menstrual bleeding, infertility, pregnancy-related issues, recovery after childbirth, and symptoms associated with menopause. Moreover, its neuroprotective and immune-modulating effects enhance overall women’s health. Phytochemical investigations have identified bioactive compounds within Dashmoola, including alkaloids, flavonoids, saponins, tannins, all of which contribute to its therapeutic impact. Scientific studies corroborate its traditional applications, emphasizing its effectiveness in hormonal regulation, pain alleviation, and tissue healing. The review also covers clinical applications of Dashmoola, mentioning various formulations like Dashmoolarishta, and Dashmoola Kwath, along with their specific advantages. Additionally, it highlights the necessity for further clinical trials to confirm its effectiveness and establish standard dosages. Potential side effects and necessary precautions for safe usage are also reviewed. The findings indicate that Dashmoola holds significant promise as a natural treatment for gynecological disorders and the promotion of reproductive health. Nevertheless, more comprehensive research is essential for its effective integration into contemporary gynecological practices. This review functions as a detailed resource for comprehending the relevance of Dashmoola in women's health and its future possibilities within integrative medicine
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