688 research outputs found

    Design of a small-scale solar Dryer to Improve Natural Drying of Vegetables and Fish

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    This study aimed at improvement of a solar dryer based on the principle of natural–convection used for drying vegetables and fish. The constructed dryer, comprises of three main models, solar collector (tent of polythene sheet collector), drying chamber and solar chimney. Design has been made to eliminate the problem of quality loss and over drying. Okra, Tomato, onion, fish were subjected to solar drying and open – air drying processes. The chemical, microbiological analyses and sensory evaluation were carried out for the dried products. The results gives indication of improved quality for solar dryer compared to products dried in open – air systems which indicates its efficiency in drying. &nbsp

    Algorithm Decision Support in Determining Bidikmisi Scholarship Receive (Case Study: Bidikmisi Scholarship)

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    The purpose of this research is to find a better method for decision making of Bidikmisi scholarship by comparing FCM and AHP methods. The result show that AHP better then FCM method, where the suitable of decision making AHP method is 590 from 804 scholarship recipients or about 73%. Scholarship recipients using AHP method are 623 pass students and 181 not pass students. While the suitable of decision making FCM method with the results of the decision Bidikmisi scholarship recipients 489 from 804 students or about 60.69%. The scholarship recipients using FCM method are 623 most recommended students, 177 recommended students and 4 students not recommended

    Two Dimensional Liquid Chromatographic Separations of Plants Extracts

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    In this study, the potential of using off-line or online two dimensional liquid chromatography (2D LC) separations of plant extracts was examined. A new approach to high speed, online isocratic elution comprehensive 2D LC based on the use of hydrophilic interaction liquid chromatography (HILIC) chromatography in the first dimension, and a fast second dimension utilizing high temperature and Hypercarb porous carbon stationary phase is described. Entirely conventional isocratic elution instrumentation and columns were assembled in a system which could separate the complex mixture of compounds extracted from rare Serbian plants. The second dimension column was used at high flow rate in isocratic mode and a high column temperature of 110°C. Fractions eluted from the first dimension HILIC column were subjected to the second dimension either online (using an interface) or off-line. The online HILIC-Hypercarb combination demonstrated large peak capacities as compared to other modes

    Jejunal Intussusception: A Rare Manifestation of a Primary Thyroid Non-Hodgkin Lymphoma

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    Primary thyroid lymphoma (PTL) is an uncommon malignancy of the thyroid gland, with most lymphomas of the thyroid being almost exclusively of the non-Hodgkin\u27s B cell variety. PTL requires a prompt diagnosis because of its ability to cause progressive compression symptoms, and its unusual presentation can make the diagnosis very challenging. Herein, we present a case of PTL in a young woman with an uncommon initial presentation and discuss the complications she faced during the surgery, as well as postoperatively, due to the compression of the trachea by the thyroid mass

    T-Wave Morphology Changes as Surrogate for Blood Potassium Concentration in Hemodialysis Patients

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    End-stage renal disease (ESRD) patients undergoing hemodialysis (HD) are at high risk of arrhythmias and sudden cardiac death as a result of blood potassium concentration ([K+ ]) changes. The aim of this study is to investigate if dw, a time-warping-based electrocardiogram (ECG) biomarker of T-wave morphology changes, reflects [K+] evolution in HD patients, facilitating noninvasive [K+] monitoring and avoiding in-hospital blood tests analysis. 48-hour ECGs and a set of hourly-collected blood samples from 12 ESRD patients were acquired and analyzed. dw was calculated between a reference T-wave, measured at the end of the HD session, and the T-waves corresponding to each hour along the whole HD session, when [K+] was measured from blood samples. The values of dw correlated with the relative variations in [K+] with respect to the reference value (end of HD, ¿[K+ ]), with a median (interquartile) correlation coefficient of 0.90 (0.30), evidencing a strong relation between them. Our findings support the use of dw as a surrogate of ¿[K+], suggesting a potential use of dw for non-invasive hyperkalemia monitoring both in hospital and ambulatory settings

    Monitoring blood potassium concentration in hemodialysis patients by quantifying T-wave morphology dynamics.

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    We investigated the ability of time-warping-based ECG-derived markers of T-wave morphology changes in time ([Formula: see text]) and amplitude ([Formula: see text]), as well as their non-linear components ([Formula: see text] and [Formula: see text]), and the heart rate corrected counterpart ([Formula: see text]), to monitor potassium concentration ([Formula: see text]) changes ([Formula: see text]) in end-stage renal disease (ESRD) patients undergoing hemodialysis (HD). We compared the performance of the proposed time-warping markers, together with other previously proposed [Formula: see text] markers, such as T-wave width ([Formula: see text]) and T-wave slope-to-amplitude ratio ([Formula: see text]), when computed from standard ECG leads as well as from principal component analysis (PCA)-based leads. 48-hour ECG recordings and a set of hourly-collected blood samples from 29 ESRD-HD patients were acquired. Values of [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] were calculated by comparing the morphology of the mean warped T-waves (MWTWs) derived at each hour along the HD with that from a reference MWTW, measured at the end of the HD. From the same MWTWs [Formula: see text] and [Formula: see text] were also extracted. Similarly, [Formula: see text] was calculated as the difference between the [Formula: see text] values at each hour and the [Formula: see text] reference level at the end of the HD session. We found that [Formula: see text] and [Formula: see text] showed higher correlation coefficients with [Formula: see text] than [Formula: see text]-Spearman's ([Formula: see text]) and Pearson's (r)-and [Formula: see text]-Spearman's ([Formula: see text])-in both SL and PCA approaches being the intra-patient median [Formula: see text] and [Formula: see text] in SL and [Formula: see text] and [Formula: see text] in PCA respectively. Our findings would point at [Formula: see text] and [Formula: see text] as the most suitable surrogate of [Formula: see text], suggesting that they could be potentially useful for non-invasive monitoring of ESRD-HD patients in hospital, as well as in ambulatory settings. Therefore, the tracking of T-wave morphology variations by means of time-warping analysis could improve continuous and remote [Formula: see text] monitoring of ESRD-HD patients and flagging risk of [Formula: see text]-related cardiovascular events

    Scaling of the F_2 structure function in nuclei and quark distributions at x>1

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    We present new data on electron scattering from a range of nuclei taken in Hall C at Jefferson Lab. For heavy nuclei, we observe a rapid falloff in the cross section for x>1x>1, which is sensitive to short range contributions to the nuclear wave-function, and in deep inelastic scattering corresponds to probing extremely high momentum quarks. This result agrees with higher energy muon scattering measurements, but is in sharp contrast to neutrino scattering measurements which suggested a dramatic enhancement in the distribution of the `super-fast' quarks probed at x>1. The falloff at x>1 is noticeably stronger in ^2H and ^3He, but nearly identical for all heavier nuclei.Comment: 5 pages, 4 figures, to be submitted to physical revie
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