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Numerical investigation of gas heating effect in dielectric barrier discharge for Ne-Xe excilamp
Amar Benmoussa,Ahmed Belasri,Zahir Harrache 한국물리학회 2017 Current Applied Physics Vol.17 No.4
The purpose of this paper is to study the gas heating phenomenon in dielectric barrier discharge (DBD) due to the Joule heating effect for Ne-Xe gas mixtures. In this work, the simulationwas performed using a one-dimensional fluid model. The gas temperature profile was calculated by heat conduction equation resolution along gap distance of discharge. The increasing of gas temperature close to the vicinity of cathode is due to the high values in the power deposited in this region. The results show that the gas temperature in DBD excited with rectangular applied voltage waveform is more important than the discharge created by a sinusoidal excitation. For high values of secondary electron emission coefficient (g) the gas temperature will be increasing. The effect of varying gas mixture composition on gas temperature has been also examined.
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Assessment of nutritional status in HIV-positive population
El Alama Hakim,Fatihi Touria,Benmoussa Adnane,Barkat Amina 경희대학교 융합한의과학연구소 2021 Oriental Pharmacy and Experimental Medicine Vol.21 No.1
The objective of this work is to assess the nutritional status of HIV-positive patients and to correlate it to the response to treatment and to certain parameters such as age, gender, socio-economic level, etc. to validate the various tools for assessing the nutritional status of the HIV-positive population. This prospective observational study was extended over a 6-month period and included 220 HIV-positive patients. The nutritional status of each patient was evaluated according to the following tools: exploitation sheet, anthropometric analysis, food survey and calculation of dietary intake, nutritional risk index and nutritional risk stratification. The sex ratio was 52.78, where 144 (65.46%) were women, the average age was 41.60 ± 11.05 years. The evaluation of energy intake showed that 82% of patients had a deficiency in intake relative to nutritional needs. The study population presented vitamin, mineral and micronutrient deficiencies. According to the nutritional risk stratification table we designed, 53% of patients were in grade 7 and 2% were in grade 12. Undernutrition among HIV-positive people was prevalent in the study population, which had a negative impact on the health status and well-being of patients. Correcting undernutrition states would correct anthropometric parameters and biological markers, thus reducing and/or stabilizing viral load and improving CD-ratio.
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