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Prevalence of Cigarette Smoking Usage among Adolescent Students in Northern Saudi Arabia
Algorinees, Rakan Mosa,Alreshidi, Ibrahim Ghazy Kiran,Alateeq, Mohammed Fahad Mohammed,Alghuraymi, Abdullah Abdulaziz Salem,Alfayez, Adel Ahmed Abdulrahman,Almuzaini, Fahad khaled Fahad,Alsaif, Mohamm Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.8
Background: Cigarette smoking is a major public health issue in the Kingdom of Saudi Arabia (KSA) in recent years, particularly among adolescents. Therefore, the aim of this study was to determine the prevalence of cigarette smoking usage among adolescent students in the north of the country. Materials and Methods: This was a cross-sectional study investigated 305 adolescent students from the Northern KSA population, their ages ranging from 11 to 19 years old. Results: Of the 287 respondents, 56/287(19.5%) were found to be current smokers. Of the 56 current smokers, 14/52 (27%), 29/52 (55.8%), and 9/52 (17.2%) smoked 1-3, 4-10 and 11+cigarettes/day, respectively. For duration most had smoked for 26-36 months. Conclusions: The findings of the present study indicate that cigarette smoking use is still an important risk behavior among adolescent students. The findings of this study found a significant association of cigarette smoking usage and adolescents various believes and attitude for initiation of smoking and perception toward knowledge of other factors that contribute to the burden of tobacco use.
Assessment of Sustainable Green Lightweight Concrete Incorporated in New Construction Technologies
Fahad K. Alqahtani,Mohamed A. Sherif,Amr M. Ghanem,Ibrahim S. Abotaleb 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.12
Recent studies have led to the development of approaches for recycling plastic waste and using it as an alternative for natural aggregates in concrete. The studies mainly focused on the material properties and sustainability aspects of such implementation, with little focus on the financial implications and the technical feasibility. The purpose of this research is to investigate the different lifecycle costs associated with the use of green recycled plastic lightweight aggregates (GLACs) in concrete construction in different structural systems. For that purpose, the authors evaluated a concrete structure with several variable design systems and conducted structural design once using conventional concrete and once using concrete with recycled plastic aggregates, resulting in a total of 36 distinct scenarios. The lifetime cost analysis was performed on such scenarios. Finally, a sensitivity analysis was carried out to determine how structural characteristics and critical element costs influence cost-effectiveness. According to the findings, this approach can save up to 6% in life-cycle expenses. The findings of this research will contribute to the upcoming paradigm shift of using recycled plastic in concrete, which will reduce the environmental impacts of both the concrete and plastic industries while also assisting developers in lowering their life cycle costs.
3-D Shape Recovery from Image Focus Using no-reference sharpness metric based on inherent sharpness
Fahad Mahmood,Muhammad Tariq Mahmood,Javaid Iqbal 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
Recovering an accurate depth map from its corresponding 2-D images using shape from focus architecture is a convoluted issue in computer vision and signal processing society. This paper contributes a new robust focus measure for 3-D shape recovery based on discrete wavelet transform and inherent sharpness approach. This novel focus measure technique utilizes no-reference sharpness metric based on inherent sharpness approach. The no-reference sharpness metric estimates a perceptual sharpness score based on the coefficients of discrete wavelet transform. To obtain the data of high frequency elements in an image the perceptual sharpness metric utilizes diagonal coefficients and approximated sub-signal of wavelet decomposition. The efficiency of the proposed scheme is evaluated by comparing it with state of art shape from focus approaches by conducting experiments on real and synthetic image sequences. Two global statistical metrics are utilized for performance evaluation by conducting experiments on real world images and synthetic image sequences. The evaluation is estimated on the basis of monotonicity and unimodality of the focus measure curve. The experimented results are then discussed in various forms to support the proposed scheme.
Fahad Albanumay,Naif Alqahtani,Basheer Alshammari,Haytham Alodan,Turky Alopily,Mohammed Muhawes 한양대학교 세라믹연구소 2020 Journal of Ceramic Processing Research Vol.21 No.6
Magnesium aluminate spinel (MgAl2O4) composites were prepared by mixing the commercial Alumina and Magnesium Oxideas starting raw materials. Titanium oxide (TiO2) and Zirconium oxide (ZrO2) were used as additives. The mixtures wereprepared as by milling of five different combinations using zirconia balls for 1 hour each. Then Cold Isostatic Press (CIP) at200 MPa pressed the batches. The material properties, such as porosity and density, and thermal expansion of the compositeswere characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and the dilatometer measurements. MgAl2O4 ceramic composites are composed of spinel and garnet structures. The thermal expansion coefficients (CTE) ofMgAl2O4 composites with and without TiO2 and ZrO2 additives under different temperature condition (25 oC to 1,300 oC) werecharacterized for spinel thermal expansion study and it shows that the comparison between the five different samplecombinations at 1,300 oC, adding TiO2 or ZrO2 by small percentage gives the lowest CTE (9.89E-06, 1.02E-05) respectively,but increasing ZrO2 increases the CTE.
Fahad Shafiq,Hina Batool,Syed Hammad Raza,Mansoor Hameed 한국작물학회 2015 Journal of crop science and biotechnology Vol.18 No.3
Drought is a multidimensional stress that results in economic mislays. Allometric features of drought-stressed cotton plants were investigated during two separate experiments. In the first experiment, susceptibility of the cotton seed germination stage towards decrease osmotic potential was evident under PEG-8000 induced drought stress. Changes in growth and biochemical constituents were studied from the field experiment and were explained on the basis of developmental plasticity under waterdeficit growth conditions. Potassium nitrate was applied as the seed pre-treatment and its influence on the morphological and structural development was marked with prime reference to cotton growth and productivity under water-limited environment. A shift in the biochemical attributes was evident for drought-stressed cotton plants which showed a reduction in the chlorophyll contents. Cotton stress response was obvious from the shift in the chlorophyll a/b relative ratio which was also influenced by seed pre-treatment. It is concluded that structural modifications under a water scarce environment play a vital role in determining the morphological and physiological status of cotton