Prophylactic Therapy Response in Children with Abdominal Migraine: A Single Centre Experience in Oman

Tawfiq Taki Al Lawati,Omar I. Saadah,Ruwaina al Riyami,Zuwaina al Yarubi 대한소아소화기영양학회 2022 Pediatric gastroenterology, hepatology & nutrition Vol.25 No.2

Purpose: Abdominal migraine (AM) is a very common functional gastrointestinal disorder in children. This study reports the clinical features and response of AM to prophylactic treatment in children. Methods: This retrospective study was conducted between January 2010 and December 2019 at the Royal Hospital in the Sultanate of Oman. This study included children aged ≤ 13 years with a diagnosis of AM based on the Rome IV criteria for functional diagnoses. Clinical, demographic, and treatment data were collected. Results: Seventy-four children were identified, of which 43 were eligible for inclusion in this study. The median age at the onset of symptoms was 7 years (range, 2–12 years). The most frequent symptoms were headache (81.4%), nausea (79.1%), and vomiting (72.1%). Of the total cohort, 46.5%, 23.3%, and 6.9% received riboflavin, pizotifen, and propranolol monotherapy, respectively. Combination therapy was also used; 16.3% of children received pizotifen and propranolol, 4.7% received riboflavin and pizotifen, and 2.3% received riboflavin and propranolol. Patients treated with propranolol monotherapy showed 100% clinical improvement and those treated with riboflavin or pizotifen monotherapy showed 90% clinical improvement. Response to combination therapy with pizotifen and propranolol was 71.4%, and with riboflavin and pizotifen was 100%. In addition, treatment response was significantly associated with the presence of vomiting (p=0.039). Conclusion: We found a favorable response to various modalities and combination treatments with riboflavin, pizotifen, and propranolol in children with AM. In addition, the presence of vomiting may predict treatment response.

Analyst of nanofluids massic temperature quality assessment of artificial intelligence

Tawfiq Al-Mughanam,Vineet Tirth 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.2

Nanofluids are a class of fluids that contain a small number of nanoparticles, which have unique thermal and physicalproperties that make them suitable for various industrial and biomedical applications. However, the quality of nanofluids isoften affected by factors such as temperature, concentration, and stability, which can affect their performance. This studyaimed to develop an AI-based method for assessing the massic temperature quality of nanofluids, which can be used tooptimize their performance and ensure their stability. The study used a dataset of massic temperature measurements ofnanofluids, which were collected from experiments. The dataset was then preprocessed and used to train a machine learningmodel, which was able to predict the massic temperature of nanofluids based on their concentration and stability. The resultsshowed that the AI-based method was able to accurately predict the massic temperature of nanofluids, with a mean absoluteerror of less than 1%. The study also investigated the effect of different factors on the massic temperature of nanofluids, suchas the type of nanoparticle, the size of the nanoparticle, and the method of preparation. The results showed that these factorshave a significant impact on the massic temperature of nanofluids and that the AI-based method can be used to optimize theperformance of nanofluids by adjusting these factors. The study utilizes a Mean Absolute Error (MAE) to ensure betterconsistency between predicted and observed values. The results indicate that the heat capacity of the nanofluids improved by57%.

Buckling of symmetrically laminated plates using <i>n</i>th-order shear deformation theory with curvature effects

Tawfiq Becheri,Khaled Amara,Mokhtar Bouazza,Noureddine Benseddiq 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.21 No.6

In this article, an exact analytical solution for mechanical buckling analysis of symmetrically cross-ply laminated plates including curvature effects is presented. The equilibrium equations are derived according to the refined <i>n</i>th-order shear deformation theory. The present refined <i>n</i>th-order shear deformation theory is based on assumption that the in-plane and transverse displacements consist of bending and shear components, in which the bending components do not contribute toward shear forces and, likewise, the shear components do not contribute toward bending moments The most interesting feature of this theory is that it accounts for a parabolic variation of the transverse shear strains across the thickness and satisfies the zero traction boundary conditions on the top and bottom surfaces of the plate without using shear correction factors. Buckling of orthotropic laminates subjected to biaxial inplane is investigated. Using the Navier solution method, the differential equations have been solved analytically and the critical buckling loads presented in closed-form solutions. The sensitivity of critical buckling loads to the effects of curvature terms and other factors has been examined. The analysis is validated by comparing results with those in the literature.

과수원의 관수 및 우박 보호를 위한 스마트 태양열 시스템에 관한 연구

가마타피크 ( Gama Tawfiq ),김용태 ( Yong-tae Kim ) 한국농공학회 2019 한국농공학회 학술대회초록집 Vol.2019 No.-

In the main apple producing countries of the European Union and America, the use of the anti-hail nets has been increasing, which is an only effective way to protect the fruit against the hail damage, even though there are negative effects like the interception of light, color and quality of fruits, sunburn, modifications of orchard climate, installation systems even the hail net is very costly (8000Eu/Ha). This remedy does not produce completely satisfactory results to the fruit crops. This study is divide in two parts: First part is to make a computer application which can simulate the Global Horizontal Irradiation in two countries Algeria and South Korea using the R-Sun model, This model computes for the global solar radiation based on time, location, surface and atmospheric conditions. Its inputs are an elevation raster and the day of the year. Location values are provided by latitude and longitude raster. In the second part, we design a management system of the orchard by using IoT technology. We used the ARDUINO mega2560 for the measurement of meteorological data (Temperature, Humidity, light intensity, Soil moisture) which are directly captured by the sensors (DHT11, VEML7700, soil moisture), all the data transmitted to the web server by using the shield ESP8266 Wi-Fi Module, the information appears instantly on a web page that enables us to control the irrigation pump (On/Off) and the opening/closing anti-hail system. From the results of Global Horizontal Irradiation (GHI) obtained in the region of Ghardaia in Algeria for a clear sky day, the daily measurements of GHI was 797W/m² at 10.00 am to 1029W/m² at midday and 537 w/m² at 17.00pm, comparing to the computed results by R-Sun ranged from 649W/m² at 10.00 am to 1009.61W/m² at midday and finally to 649.033 W/m² at 17.00 pm. The Mean Absolute Percentage Error between the measured and modeled GHI for all the day data is 5.61%, the model performs well for the Algerian measurements. This study can assist farmers to estimate the solar energy potential of farmland and for the orchard’s owners by using the IOT system they can be consulting all the meteorological data of the orchards from any place in any time by using phone connected to internet which can allow controlling irrigation and the anti-hail protection system. This feature allows to use the anti-hail net just in need which prevents negative effects on the fruits.

New Method for Predicting the Ultimate Bearing Capacity of Driven Piles by using Flap Number

Fatehnia Milad,Tawfiq Kamal,Hataf Nader,Ozguven Eren Erman 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.3

A new method was proposed to predict the compressive bearing capacity of driven piles based on the number of hammer strikes inthe last one meter of pile penetration (known here as Flap number). To collect the data, a literature review was done on technicalpublications and pile driving record reports that were accessible to the authors at the time of publication. The data of a hundred drivenpiles including Flap number, basic properties of the surrounding soil, pile geometry, and pile-soil friction angle was collected. Thesedata were initially used in the artificial neural network to establish a relation for predicting pile capacity. Subsequently, by usinggenetic programing and linear regression, equations for determining pile bearing capacity with respect to the Flap number, soilparameters, and pile geometries were proposed. Finally, the performance of all applied methods in predicting the pile bearingcapacity were compared. The utmost importance was given to the comparison of the accuracy of the three models as well as the errorestimation.

Characterization of green ceramic-aluminum composites developed from waste recycling

Ravi Kumar Singh,Ali Algahtani,Tawfiq Al-Mughanam,Intezar Mahdi,Vineet Tirth 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.3

Green composites were prepared by recycling waste Aluminum and ceramic debris of marble and granite stones obtainedduring stone cutting at building construction sites. The composites were developed using the most economical stir castingprocess under ambient conditions with five weight percent of white marble powder and black granite powders. Themicrostructure characterization was done with my optical and SEM micrography as well as XRD. The microstructure showsfair particle distribution and improved hardness by 22-25% than the base matrix. The tensile strength and elastic modulusalso improved. The density remained stagnant due to porosity. A decline in elongation and impact strength was observed. Thestudy recommends using waste Aluminum and waste ceramic powders to develop green composites for non-critical industrialapplications such as structures, furniture, stationary machine parts, and automobile chassis.

What is the effect of initial implant position on the crestal bone level in flap and flapless technique during healing period?

Mohammed Jasim Al-Juboori,Shaifulizan Ab Rahman,Akram Hassan,Ikmal Hisham Bin Ismail,Omar Farouq Tawfiq 대한치주과학회 2013 Journal of Periodontal & Implant Science Vol.43 No.4

Purpose: The level of the implant above the marginal bone and flap design have an effect on the bone resorption during the healing period. The aim of this study is to detect the relationship between the level of the implant at the implant placement and the bone level at the healing period in the mesial and distal side of implants placed with flapless (FL) and full-thickness flap (FT) methods. Methods: Twenty-two nonsubmerged implants were placed with the FL and FT technique. Periapical radiographs were taken of the patient at implant placement, and at 6 and 12 weeks. By using computer software, bone level measurements were taken from the shoulder of the healing cap to the first bone implant contact in the mesial and distal side of the implant surface. Results: At 6 weeks, the correlation between the crestal bone level at the implant placement and crestal bone level of the FT mesially was significant (Pearson correlation coefficient=0.675, P<0.023). At 12 weeks, in the FT mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.297, P<0.346). At 6 weeks in the FT distally, the correlation was nonsignificant (Pearson correlation coefficient=0.512, P<0.107). At 12 weeks in the FT distally, the correlation was significant (Spearman correlation coefficient=0.730, P<0.011). At 6 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.083, P<0.809). At 12 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.062, P<0.856). At 6 weeks in the FL distally, the correlation was nonsignificant (Spearman correlation coefficient=0.197, P<0.562). At 12 weeks in the FL distally, the correlation was significant (Pearson correlation coefficient=0.692, P<0.018). Conclusions: A larger sample size is recommended to verify the conclusions in this preliminary study. The bone level during the healing period in the FT was more positively correlated with the implant level at implant placement than in the FL.

What is the effect of initial implant position on the crestal bone level in flap and flapless technique during healing period?

Al-Juboori, Mohammed Jasim,Ab Rahman, Shaifulizan,Hassan, Akram,Ismail, Ikmal Hisham Bin,Tawfiq, Omar Farouq Korean Academy of Periodontology 2013 Journal of Periodontal & Implant Science Vol.43 No.4

Purpose: The level of the implant above the marginal bone and flap design have an effect on the bone resorption during the healing period. The aim of this study is to detect the relationship between the level of the implant at the implant placement and the bone level at the healing period in the mesial and distal side of implants placed with flapless (FL) and full-thickness flap (FT) methods. Methods: Twenty-two nonsubmerged implants were placed with the FL and FT technique. Periapical radiographs were taken of the patient at implant placement, and at 6 and 12 weeks. By using computer software, bone level measurements were taken from the shoulder of the healing cap to the first bone implant contact in the mesial and distal side of the implant surface. Results: At 6 weeks, the correlation between the crestal bone level at the implant placement and crestal bone level of the FT mesially was significant (Pearson correlation coefficient=0.675, P<0.023). At 12 weeks, in the FT mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.297, P<0.346). At 6 weeks in the FT distally, the correlation was nonsignificant (Pearson correlation coefficient=0.512, P<0.107). At 12 weeks in the FT distally, the correlation was significant (Spearman correlation coefficient=0.730, P<0.011). At 6 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.083, P<0.809). At 12 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient= 0.062, P<0.856). At 6 weeks in the FL distally, the correlation was nonsignificant (Spearman correlation coefficient=0.197, P<0.562). At 12 weeks in the FL distally, the correlation was significant (Pearson correlation coefficient=0.692, P<0.018). Conclusions: A larger sample size is recommended to verify the conclusions in this preliminary study. The bone level during the healing period in the FT was more positively correlated with the implant level at implant placement than in the FL.