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Title: Predicting the Endurance and Accuracy of the Skill Performance in Terms of Some Functional Indicators of the Circulatory System and the Heart Muscle of Young Football Players
Author(s): Sanaa Ali Ahmed Alrashid, Ammar Jasim Muslim Almatoori, Yaseen Habeeb Azzal Alimarah
Pages: 1-6 Paper ID:200801-3737-IJBAS-IJENS Published: February, 2020
Abstract: One of the special and important abilities of the football player is the enduring of performance that enables the players to maintain ideal and skilled performance under the physical and psychological pressure resulting from matches burden with the progress of time, which contributes to the ability to perform accuracy in the shots on post, which is the final outcome to win the games. From here the researchers employed a designed and computerized test in order to measure the accuracy in shooting on post under the pressure of performance tolerance. Also the researcher have tackled a number of functional indicators, including hypertension, cardiac output, volume of blood flow, peripheral resistance, and rate of ejected blood of heart muscle to determine which of the indicators are more influential in performance tolerance by finding the equation of prediction. After obtaining the correlation coefficient for a number of indicators under study with performance accuracy and the value of (B) regression for tests and measurements tackled by the research and its significance in predicting the accuracy of scoring.
Keywords: endurance- accuracy- skill performance - functional indicators- circulatory system- heart muscle.
Full Text (.pdf)  International Journals Of Engineering and Science | 627 KB
Title: Investigation of Solvay Process Waste Sludge Potential for Precipitation of Heavy Metals from Aqueous Solutions
Author(s): Amra Selimović, Halid Junuzović, Sabina Begić, Abdel Đozić, Mirsad Salkić, Melisa Ahmetović
Pages: 7-11 Paper ID:203401-7878-IJBAS-IJENS Published: February, 2020
Abstract: Industrial plants producing light and dense soda ash generate significant amounts of effluents which have been globally recognized as an environmental problem. Waste liquid streams from soda production plant in Bosnia and Herzegovina are discharged to several settling basins, one of which is completely filled. Considering the high content of CaCO3 and Ca(OH)2 and the resulting high pH value of the waste material in filled settling basin, the effect of the solid phase of the material on the chemical precipitation of heavy metal ions from their aqueous solutions was investigated in this paper. The results obtained in this study showed it is possible to remove more than 99.9% of lead, zinc, nickel and copper from their monocomponent aqueous solutions of initial concentrations of 500 mg/l, which may contribute to the consideration of alternative uses of waste material from the soda production process as well as its subsequent disposal in an adequate manner.
Keywords: Solvay process, waste sludge, water treatment, heavy metal precipitation.
Full Text (.pdf)  International Journals Of Engineering and Science | 436 KB