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RISS 인기검색어
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- 저자 : Bakkali, Saad (검색결과 2 건)
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Multifractal Classification of the Disturbed Areas of the Sidi Chennane Phosphate Deposit, Morocco
Ayad, Abderrahim,Bakkali, Saad The Korean Society of Economic and Environmental G 2022 자원환경지질 Vol.55 No.3
The irregular shape of the disturbances is a fundamental issue for mining engineers at the Sidi Chennane phosphate deposit in Morocco. A precise classification of disturbed areas is therefore necessary to understand their part in the overall volume of phosphate. In this paper, we investigate the theoretical and practical aspects of studying and measuring multifractal spectrums as a defining and representative parameter for distinguishing between the phosphate deposit of a low rate of disturbances and the deposit of a high rate. An empirical multifractal approach was used by analyzing the disturbed areas through the geoelectric images of an area located in the Sidi Chennane phosphate deposit. The Generalized fractal dimension, D(q), the Singularities of strength, α(q), the local dimension, f(α) and their conjugate parameter the mass exponent, τ(q) as well as f(α)-α spectrum were the common multifractal parameters used. The results reported show wide variations of the analyzed images, indicating that the multifractal analysis is an indicator for evaluate and characterize the disturbed areas within the phosphates deposits through the studied geoelectric images. This could be the starting point for future work aimed at improving phosphate exploration planning.
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Al- Betar Mohammad Tayseer,Masa'deh Rami,Hamaideh Shaher H.,Ahmed Fatma Refaat,Bakkali Hajar,AbuRuz Mohannad Eid 대한중환자의학회 2023 Acute and Critical Care Vol.38 No.3
Background: Supraventricular tachycardia (SVT) is a common arrhythmia with associated symptoms such as palpitation, dizziness, and fatigue. It significantly affects patients’ quality of life (QoL). Radiofrequency cardiac ablation (RFCA) is a highly effective treatment to eliminate arrhythmia and improve patients’ QoL. The purpose of this study was to assess the level of QoL among patients with SVT and examine the difference in QoL before and after RFCA. Methods: One group pre-posttest design with a convenience sample of 112 patients was used. QoL was assessed by 36-Item Short Form (SF-36). Data were collected at admission through face-to-face interviews and 1-month post-discharge through phone interviews. Results: There was a significant difference between QoL before (33.7±17.0) and one month after (62.5±18.5) the RFCA. Post-RFCA patients diagnosed with atrioventricular re-entry tachycardia had higher QoL than other types of SVT. Moreover, there were significant negative relationships between QoL and the number and duration of episodes pre- and post-RFCA. There were no significant differences in QoL based on: age, sex, working status, marital status, smoking, coronary artery disease, diabetes mellitus, and hypertension. Conclusions: After RFCA, the QoL of patients with ST improved for both physical and mental component subscales.
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