A Comparative Study of Word Embedding Models for Arabic Text Processing

Assiri, Fatmah,Alghamdi, Nuha International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.8

Natural texts are analyzed to obtain their intended meaning to be classified depending on the problem under study. One way to represent words is by generating vectors of real values to encode the meaning; this is called word embedding. Similarities between word representations are measured to identify text class. Word embeddings can be created using word2vec technique. However, recently fastText was implemented to provide better results when it is used with classifiers. In this paper, we will study the performance of well-known classifiers when using both techniques for word embedding with Arabic dataset. We applied them to real data collected from Wikipedia, and we found that both word2vec and fastText had similar accuracy with all used classifiers.

Bioactive Lipids, Radical Scavenging Potential, and Antimicrobial Properties of Cold Pressed Clove (Syzygium aromaticum) Oil

Adel Mohamad Ali Assiri,Mohamed F.R. Hassanien 한국식품영양과학회 2013 Journal of medicinal food Vol.16 No.11

Health promoting cold pressed oils may improve human health and prevent certain diseases. It is hard to find any research concerning the composition and functional properties of cold pressed clove (Syzygium aromaticum) oil (CO). Cold pressed CO was evaluated for its lipid classes, fatty acid profiles, and tocol contents. In addition, antiradical and antimicrobial properties of CO were evaluated. The amounts of neutral lipids in CO was the highest (*94.7% of total lipids), followed by glycolipids and phospholipids. The main fatty acids in CO were linoleic and oleic, which comprise together *80% of total fatty acids. Stearic and palmitic acids were the main saturated fatty acids. a- and c-tocopherols and d-tocotrienol were the main detected tocols. CO had higher antiradical action against DPPH and galvinoxyl radicals than virgin olive oil. The results of antimicrobial properties revealed that CO inhibited the growth of all tested microorganisms. CO had a drastic effect on the biosynthesis of proteins and lipids in cells of Bacillus subtilis. In consideration of potential utilization, detailed knowledge on the composition and functional properties of CO is of major importance.

One-Pot Gram-Scale, Eco-Friendly, and Cost-Effective Synthesis of CuGaS₂ /ZnS Nanocrystals as Efficient UV-Harvesting Down-Converter for Photovoltaics

Jalalah, Mohammed,Al-Assiri, M. S.,Park, Jea-Gun Wiley (John WileySons) 2018 ADVANCED ENERGY MATERIALS Vol.8 No.20

Designing and modification of bismuth oxyhalides BiOX (X = Cl, Br and I) photocatalysts for improved photocatalytic performance

Irshad Ahmad,Shazia Shukrullah,Muhammad Yasin Naz,Sami Ullah,Mohammed Ali Assiri 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.105 No.-

Photocatalysis has emerged as a promising technology for solving global environmental and energy challenges. The selectivity of low-cost, non-toxic and thermochemically stable materials for photocatalyticapplications is crucial to meet the industrial standards. Despite of owing unique layered structure, distinctelectronic band structure and tunable optical properties, the bismuth oxyhalides BiOX (X = Cl, Brand I) photocatalytic materials suffer from rapid recombination of charge carriers and limited lightabsorption issues. These limitations restrict the photocatalytic efficiency and industrial applications ofBiOX materials. The focus of this critical review is to discuss recent developments in the design and modificationof existing and new BiOX materials for getting optimum photocatalytic response from thesematerials. The key elements of the review are BiOX synthesis methods, BiOX driven water splitting, singleand double stage hydrogen evolution systems, degradation of organic pollutants and trends of boostingthe photocatalytic efficiency of the BiOX materials. Finally, this insight discusses the existing issues andfuture perspectives of BiOX photocatalysts.

Study of oxygen reduction reaction on binuclear-phthalocyanine with Fe-Fe, Co-Co, and Fe-Co dual-atom-active sites using density functional theory

Anuj Kumar,Dipak Kumar Das,Raj Kishore Sharma,Manickam Selvaraj,Mohammed A. Assiri,Saira Ajmal,Guoxin Zhang,Ram K. Gupta,Ghulam Yasin 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-

Although the N4-macrocyclic ligands have been used to develop single-atom catalysts (SACs), their utilizationfor the construction of dual-atom catalysts (DACs) for electrocatalytic oxygen reduction reaction(ORR) is poorly investigated. Herein, a binuclear phthalocyanine (bN-Pc) was explored as a theoreticalmodel for the construction of FeFe-bN-Pc, CoCo-bN-Pc, and FeCo-bN-Pc dual-atom-site configurationsand their ORR activity along with mechanisms were investigated systematically in alkaline media, usingdensity functional theory (DFT) calculations. The results indicated that the dual-atom-bN-Pc models, havingclose proximity between adjacent metals, invited individual O-atom of O2 for coordination on bothsites, forming a cis-bridged-O2 adduct. The Gibbs free energy studies showed that the decompositionof O2 on dual-atom sites was the rate-determining step, and the Fe-Co-bN-Pc had a lower energy barrier(0.591 eV) for this step as compared to Fe-Fe-bN-Pc (0.641 eV) and Co-Co-bN-Pc (0.692 eV), which justifiesits stronger ORR performance. The synergistic effect of Fe-Co collaboration, the close proximity ofFe-Co, and the significant e- donation from the 3d-orbital of active sites into the *orbital of O2 can beattributed to this decrease in limiting the potential for the rate-determining step on Fe-Co-bN-Pc. Forfuture ORR electrocatalysts, this work offers a scientific and engineering perspective on the constructionof dual-atom active sites employing molecular moieties.

Socioeconomic Impacts of Gluten-Free Diet among Saudi Children with Celiac Disease

Sarkhy, Ahmed,El Mouzan, Mohammad I.,Saeed, Elshazaly,Alanazi, Aziz,Alghamdi, Sharifa,Anil, Shirin,Assiri, Asaad The Korean Society of Pediatric Gastroenterology 2016 Pediatric gastroenterology, hepatology & nutrition Vol.19 No.3

Purpose: To determine the socio-economic impact of gluten free diet (GFD) on Saudi children and their families Methods: A cross-sectional study was conducted in which an online questionnaire was sent to all families registered in the Saudi celiac patients support group. We included only children (age 18 years of age and younger) with biopsy-confirmed celiac disease (CD). Results: A total of 113 children were included in the final analysis, the median age was 9.9 years; 62.8% were females. One hundred (88.5%) of the participating families reported that GFD food was not easily available in their areas, 17% of them reported that it was not available at all in their area. One hundred and six (93.8%) reported that the price of GFD food was very expensive and 70 (61.9%) families that the diet was heavily affecting their family budget. Significant social difficulties were reported among the participating families and their children including interference with the child's interaction with other children (49.6%), the families' ability to attend social gatherings (60.2%), the families' ability to eat in restaurants (73.5%), and the families' ability to travel (58.4%). Conclusion: There is significant negative socio-economic impact of GFD on children with CD & their families. Health care providers should be aware of these psycho-social difficulties and be well trained to provide a proper education and psychological support for these patients and their families.

Clinical Characteristics of Celiac Disease and Dietary Adherence to Gluten-Free Diet among Saudi Children

Ahmed Al Sarkhy,Mohammad I. El Mouzan,Elshazaly Saeed,Aziz Alanazi,Sharifa Alghamdi,Shirin Anil and Asaad Assiri 대한소아소화기영양학회 2015 Pediatric gastroenterology, hepatology & nutrition Vol.18 No.1

Purpose: To describe the clinical characteristics of celiac disease (CD) among Saudi children and to determine the adherence rate to gluten free diet (GFD) and its determinant factors among them.Methods: A cross-sectional study was conducted, in which all the families registered in the Saudi Celiac Patients Support Group were sent an online survey. Only families with children 18 years of age and younger with biopsy-con-firmed CD were included.Results: The median age of the 113 included children was 9.9 years, the median age at symptom onset was 5.5 years and the median age at diagnosis was 7 years, the median time between the presentation and the final diagnosis was 1 year. Sixty two of the involved children were females. Ninety two percent of the patients were symptomatic at the diagnosis while eight percent were asymptomatic. The commonest presenting symptoms included: chronic abdominal pain (59.3%), poor weight gain (54%), abdominal distention, gases, bloating (46.1%) and chronic diarrhea (41.6%). Sixty percent of the involved children were reported to be strictly adherent to GFD. Younger age at diagnosis and shorter duration since the diagnosis were associated with a better adherence rate. Conclusion: CD has similar clinical presentations among Saudi children compared to other parts of the ward; however, the adherence to GFD is relatively poor. Younger age at diagnosis and shorter duration since the diagnosis were associated with a better adherence rate.

Socioeconomic Impacts of Gluten-Free Diet among Saudi Children with Celiac Disease

Ahmed Sarkhy,Mohammad I. El Mouzan,Elshazaly Saeed,Aziz Alanazi,Sharifa Alghamdi,Shirin Anil,Asaad Assiri 대한소아소화기영양학회 2016 Pediatric gastroenterology, hepatology & nutrition Vol.19 No.3

Purpose: To determine the socio-economic impact of gluten free diet (GFD) on Saudi children and their families Methods: A cross-sectional study was conducted in which an online questionnaire was sent to all families registered in the Saudi celiac patients support group. We included only children (age 18 years of age and younger) with biop-sy-confirmed celiac disease (CD).Results: A total of 113 children were included in the final analysis, the median age was 9.9 years; 62.8% were females. One hundred (88.5%) of the participating families reported that GFD food was not easily available in their areas, 17% of them reported that it was not available at all in their area. One hundred and six (93.8%) reported that the price of GFD food was very expensive and 70 (61.9%) families that the diet was heavily affecting their family budget. Significant social difficulties were reported among the participating families and their children including interference with the child’s interaction with other children (49.6%), the families’ ability to attend social gatherings (60.2%), the families’ ability to eat in restaurants (73.5%), and the families’ ability to travel (58.4%). Conclusion: There is significant negative socio-economic impact of GFD on children with CD & their families. Health care providers should be aware of these psycho-social difficulties and be well trained to provide a proper education and psychological support for these patients and their families.

Novel Sn-doped WO3 photocatalyst to degrade the organic pollutants prepared by green synthesis approach

N. R. Khalid,Samavia Ilyas,Faisal Ali,Tahir Iqbal,M. Rafi que,Muhammad Imran,Mohammad A. Assiri 대한금속·재료학회 2024 ELECTRONIC MATERIALS LETTERS Vol.20 No.1

The organic pollutants are polluting the drinking water so, it is a fi eld of great interest to clean this water by using somesophisticated materials. For this purpose, the nanostructured materials are playing vital role to attain sustainable and puredrinking water by degrading organic pollutants. The synthesis of such photocatalytic material without using harmful chemicals,is one of the important existing challenges. Thus, to tackle this challenge, we have prepared green synthesized Sn-dopedWO 3 nanomaterials by varying the content of Sn from 2 to 6 wt% and assisting from moringa oleifera seeds’ extract. Thecrystal structure, morphology, optical and photoluminescence properties of as prepared samples were investigated throughx-ray diff raction (XRD), scanning electron microscopy (SEM), ultraviolet visible spectroscopy (UV-vis) and photoluminescencespectroscopy (PL) techniques. Among of as prepared samples, the 4Sn-WO 3 (4 wt% Sn doped WO 3 ) sample hasexhibited the reduced optical band gap value i.e. 2.80 eV than 3.02 eV for pure WO 3 sample. This optimized sample has alsoshown the lowest e-h recombination rate. To test the photocatalytic performance, the methylene blue was used as a modeldye. Out of all samples, 4Sn-WO 3 sample has shown 95% degradation activity against this water pollutant. These fi ndingsspecify that the as mentioned novel photocatalytic nanomaterial will provide a signifi cant advancement in the environmentalfi eld to degrade the organic pollutants.

Clinical Characteristics of Celiac Disease and Dietary Adherence to Gluten-Free Diet among Saudi Children

Al Sarkhy, Ahmed,El Mouzan, Mohammad I.,Saeed, Elshazaly,Alanazi, Aziz,Alghamdi, Sharifa,Anil, Shirin,Assiri, Asaad The Korean Society of Pediatric Gastroenterology 2015 Pediatric gastroenterology, hepatology & nutrition Vol.18 No.1

Purpose: To describe the clinical characteristics of celiac disease (CD) among Saudi children and to determine the adherence rate to gluten free diet (GFD) and its determinant factors among them. Methods: A cross-sectional study was conducted, in which all the families registered in the Saudi Celiac Patients Support Group were sent an online survey. Only families with children 18 years of age and younger with biopsy-confirmed CD were included. Results: The median age of the 113 included children was 9.9 years, the median age at symptom onset was 5.5 years and the median age at diagnosis was 7 years, the median time between the presentation and the final diagnosis was 1 year. Sixty two of the involved children were females. Ninety two percent of the patients were symptomatic at the diagnosis while eight percent were asymptomatic. The commonest presenting symptoms included: chronic abdominal pain (59.3%), poor weight gain (54%), abdominal distention, gases, bloating (46.1%) and chronic diarrhea (41.6%). Sixty percent of the involved children were reported to be strictly adherent to GFD. Younger age at diagnosis and shorter duration since the diagnosis were associated with a better adherence rate. Conclusion: CD has similar clinical presentations among Saudi children compared to other parts of the ward; however, the adherence to GFD is relatively poor. Younger age at diagnosis and shorter duration since the diagnosis were associated with a better adherence rate.