25 research outputs found

    HIGH-OCCURRENCE AC VOLTAGE CONVERTER PLANT BY FUEL CELLS

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    The Electricity/Electricity power ripper tools integrates a Electricity-Electricity boost ripper tools along with a transformer to transform the output current from the solar panel array into two independent current sources with multiple relationships. This new seven-level inverter is configured utilizing a capacitor selection circuit along with a full-bridge power ripper tools, connected in cascade. This paper proposes a brand new solar energy generation system, which consists of a Electricity/Electricity power ripper tools along with a new seven-level inverter. A prototype is developed and tested to ensure the performance of the suggested solar energy generation system. In this manner, the suggested solar energy generation system generates a sinusoidal output current that's in phase using the utility current and it is given in to the utility. The salient options that come with the suggested seven-level inverter are that just six power electronic switches are utilized and just one power electronic switch is switched at high frequency anytime. The capacitor selection circuit converts the 2 output current causes of Electricity-Electricity power ripper tools right into a three-level Electricity current and also the full-bridge power ripper tools further converts this three-level Electricity current right into a seven-level AC current

    Movement of different-shaped particles in a pan-coating device using novel video-imaging techniques

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    The purpose of this study was to investigate the effects of particle shape on the movement of particles in a pan-coating device using novel video-imaging techniques. An area scan CCD camera was installed inside a 24-in pan coater at the same location as that of a spray nozzle, and the movement of particle was tracked using machine vision. A white tracer particle was introduced inside a bed of black-coated particles. The effects of pan loading, pan speed, and particle shape on the movement of particles was studied. The response variables were circulation time, surface time, projected area of particle per pass, dynamic angle of repose, cascading velocity, and dispersion coefficient. Experiments were conducted at 3 different pan speeds, 6, 9, and 12 rpm, and 2 fill levels (ratio of bed depth to pan diameter), one eighth and one quarter, and data were collected over a 30-minute time period. The differences in circulation times of spheres and tablets, with similar volume equivalent diameter as that of the sphere, were found to be insignificant at the 95% confidence interval. The circulation time ranged from 2.8 to 10.8 seconds depending on the operating condition and increased with increasing pan load and decreasing pan speed. The distributions of circulation time, surface time, and projected surface area were found to be nonnormal. The dynamic angle of repose for tablets was higher than for spheres. Also, the bed surface for spheres was much flatter in comparison with tablets where the bed shape attained a “wave-like” form. The average velocity of tablets in the cascading layer was found to be significantly higher than spheres. A linear model (R2>0.98) best described the variation of velocity as a function of pan speed for all of the operating conditions

    Decreased Health-Related Quality of Life in Women With Breast Cancer Is Associated With Poor Sleep

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    This study examined the longitudinal relationship between health-related quality of life (HR-QOL) and subjective and objective sleep quality in 166 women with newly diagnosed stage I-III breast cancer who were scheduled to receive ≥4 cycles of adjuvant/neoadjuvant chemotherapy. HR-QOL was assessed with the Medical Outcomes Study-Short Form Physical Component Scale and Mental Component Scale scores. Subjective sleep was assessed with the Pittsburgh Sleep Quality Index (PSQI); objective sleep was measured with actigraphy. Data were collected before starting chemotherapy and during the last week of cycle 4 of chemotherapy. Patients reported poor HR-QOL and poor sleep quality before and during chemotherapy. Short sleep time and long naps were recorded at both time points. The Mental Component score was related to reports of poor sleep but not to recorded sleep, worse Physical Component scores were associated with reports of poor sleep and less recorded nap time, suggesting sleep plays an important role in cancer patients’ HR-QOL
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