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The impact of cold atmospheric pressure plasma jet on seed germination and seedlings growth of fenugreek(Trigonella foenum-graecum)

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Plasma Science and Technology 2019年第10期21卷 61-72页

作者： sahar A FADHLALMAWLA Abdel-Aleam H MOHAMED Jamal Q M ALMARASHI Tahar BOUTRAA Physics Department College of ScienceTaibah UniversityAl-Madinah Al-Munawarah 42353Saudi Arabia Physics Department Faculty of ScienceBeni-Suef UniversityBeni-Suef 52511Egypt Department of Biology College of SciencesUniversity of TaibahAl-Madinah Al-Munawarah 42353 Saudi Arabia

The effects of cold atmospheric-pressure plasma jet (CAPPJ) were investigated on germination and early seedling growth of fenugreek (Trigonella foenum-graecum L) seeds. A two-electrode argon CAPPJ system with and without an additional grounded electrode [accelerating grounded (AG) electrode] was used at different exposure times. After 16 h of observation, the germination rates increased by 4 and 7 times, without and with using an AG electrode, respectively, for 1 min of plasma exposure. An increase in shoot fresh weight was observed, especially at 10 min exposure time. A high dry weight of root and shoot at 1 min-AG exposure time was observed. The root:shoot ratio was lower in plasma-treated seedlings, compared with the control plants. The study found that the O-radical emission line (777.4 nm) enhanced 5 times, due to the presence of an AG electrode, which increased the axial electric field and led to the formation of more streamers. The three stated effects (O-radicals, enhancement of the electric field and streamers) could be the cause for the stimulation of seed germination and seedling growth parameters when using the CAPPJ. The scanning electron microscope images showed the etching of the seed surface layers, which was more pronounced when an AG electrode was applied. The results of the current study indicate that the germination rates increased due to the increase of O-radical concentration and the etching of the seed surfaces.

关键词： cold plasma fenugreek (Trigonella foenum-graecum) germination growth

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Arabic Fake News Detection Using Deep Learning

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Computers, Materials & Continua 2022年第5期71卷 3647-3665页

作者： Khaled M.Fouad sahar F.Sabbeh Walaa Medhat Faculty of Computers&Artificial Intelligence Benha UniversityEgypt University of Jeddah College of Computer Science and EngineeringJeddah21493Saudi Arabia Information Technology and Computer Science Nile UniversityEgypt

Nowadays,an unprecedented number of users interact through social media platforms and generate a massive amount of content due to the explosion of online ***,because user-generated content is unregulated,it may contain offensive content such as fake news,insults,and harassment *** identification of fake news and rumors and their dissemination on social media has become a critical *** have adverse effects on users,businesses,enterprises,and even political regimes and *** of the art has tackled the English language for news and used feature-based *** paper proposes a model architecture to detect fake news in the Arabic language by using only textual *** learning and deep learning algorithms were *** deep learning models are used depending on conventional neural nets(CNN),long short-term memory(LSTM),bidirectional LSTM(BiLSTM),CNN+LSTM,and CNN+*** datasets were used in the experiments,each containing the textual content of Arabic news articles;one of them is reallife *** results indicate that the BiLSTM model outperforms the other models regarding accuracy rate when both simple data split and recursive training modes are used in the training process.

关键词： Fake news detection deep learning machine learning natural language processing

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Towards creation of national cerebral palsy registries in Arab countries:what is missing?

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World Journal of Pediatrics 2022年第3期18卷 222-224页

作者： sahar M.A.hassanein Tamer A.El-Sobky Division of Pediatric Neurology Department of PediatricsFaculty of MedicineAin Shams UniversityCairoEgypt Division of Pediatric Orthopedics Department of Orthopedic SurgeryFaculty of MedicineAin Shams UniversityCairoEgypt

Cerebral palsy(CP)is a global,complex and lifelong health issue with a relatively high disease burden in low-resource *** benefits of a national disease registry in general and a national CP registry in particular are twofold,namely the public health and the clinical disease-related benefits.A national CP quality registry has the potential to inform health planning and spending at national,regional and continental *** turn,this can help allocate and manage the relevant material and human resources in a more predictable and efficient manner.

关键词： benefits palsy creation

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Design, synthesis, and nanoengineered modification of spherical graphene surface by layered double hydroxide (LDH) for removal of As (Ⅲ) from aqueous solutions

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Chinese Journal of Chemical Engineering 2023年第1期53卷 374-380页

作者： Najma Kamali Jahan B.Ghasemi Ghodsi Mohammadi Ziarani sahar Moradian Alireza Badiei School of Chemistry College of ScienceUniversity of TehranTehranIran Department of Organic Chemistry Faculty of ChemistryAlzahra UniversityVanak SquareTehranIran

In this study, new nano spherical graphene modified with LDH(Layered Double Hydroxide) was prepared and used to remove As(Ⅲ) ion from aqueous solutions. At first, graphene oxide was synthesized from graphite using a well-known Hammer method. The obtained graphene oxide solution was sprayed in octanol solution under different temperatures and sprayed speed as influenced variables. The structure and physical characterization of synthesized spherical graphene oxide were determined by various techniques,including FT-IR, N_(2) adsorption–desorption, SEM, TEM, and EDX. In the next step, the hydrothermal method was applied to deposition LDH on the spherical graphene oxide. The synthesized spherical graphene modified by LDH was used to remove As(Ⅲ) as a toxic heavy metal ion. The effect of influenced variables including p H, contact time, amount of sorbent, and type eluent studied and the optimum values were as 8, 30, 50, and HCl(0.5 mol·L^(-1)), respectively. After optimization, the studied sorbent was shown a high adsorption capacity(149.3 mg·g^(-1)). The adsorption mechanism and kinetic models exhibited good agreement with the Langmuir isotherm and pseudo-second-order trends, respectively. Besides, the synthesized product was tested for seven times without significant loss in its sorption efficiency.

关键词： Graphene-based spherical adsorbent Layered double hydroxide(LDH) Adsorption Spray-assisted deep-frying

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Takotsubo syndrome with underlying pheochromocytoma

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Journal of Geriatric Cardiology 2021年第12期18卷 1068-1070页

作者： Tooba sahar Asaad Akbar Khan Raja Wajid Shabbir Cardiology Department Shifa International HospitalIslamabadPakistan

Takotsubo cardiomyopathy(TTC),also re-ferred as broken heart syndrome,is a type of non-ischemic cardiomyopathy usually preceded by exposure to significant physical or emotional stress.[1]Reported by Sato,et al.[2]in 1990 for the first time,the condition resembles acute coronary syndrome(ACS),characterised by chest pain and dyspnoea.[3]ST-segment elevation and/or T wave inversion and pathological Q waves are pre-sent in almost 40%of patients on electrocardiogram.[4]It is recently established that TTC causative factor is not only an acute emotional stress,but also sudden intracranial events,including haemorrhage,trauma and ischemic events;acute medical diseases such as sepsis and surgical interventions;increased secre-tion of endogenous catecholamines(pheochromocy-toma);and administration of exogenous catechola-minergic agents can contribute to the disease *** has been recognized by the American College of Cardiology/American Heart Association as a dis-tinctive form of reversible cardiomyopathy.

关键词： acute cardiomyopathy al.

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Elastic and optical properties of zinc-blende CrSb and its effective mass

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Rare Metals 2014年第5期33卷 615-621页

作者： sahar Rezaee Arash Boochani Masoud Majidiyan Atefeh Ghaderi Shahram Solaymani Mosayeb Naseri Department of Physics College of ScienceIslamic Azad University Physics Department Sabzevar Tarbiat Moallem University Young Researchers and Elite Club Islamic Azad University

The elastic, optical, and effective mass properties of CrSb in zinc-blende（ZB） phase were *** calculations were carried out using the full-potential linearized augmented plane wave plus local orbital according to the density functional theory. The results of elastic calculations by generalized gradient approximation and local density approximation approximations indicate that ZB CrSb is a ductile material and its Debye temperature is rather low. Band structure and density of state calculations introduce the ZB CrSb as a half-metal with spin polarization of100 %. In metal state, 16 th and 17 th bands cut off the Fermi level. Calculations study the effective mass, Fermi velocity,and Fermi surface at 16 th and 17 th bands. In continue,optical quantities such as dielectric function, energy loss function, and optical conductivity were investigated.

关键词： Half-metal CrSb Elastic properties Optical properties

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Dental-derived stem cells in tissue engineering:the role of biomaterials and host response

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Regenerative Biomaterials 2024年第1期3卷 17-26页

作者： Weihao Yuan Luiza de Almeida Queiroz Ferreira Bo Yu sahar Ansari Alireza Moshaverinia Weintraub Center for Reconstructive Biotechnology Section of ProsthodonticsSchool of DentistryUniversity of CaliforniaLos AngelesLos AngelesCA 90095USA Department of Restorative Dentistry School of DentistryUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil Section of Restorative Dentistry School of DentistryUniversity of CaliforniaLos AngelesLos AngelesCA 90095USA Department of Bioengineering Henry Samueli School of Engineering and Applied SciencesUniversity of CaliforniaLos AngelesLos AngelesCA 90095USA

Dental-derived stem cells(DSCs)are attractive cell sources due to their easy access,superior growth capacity and low *** can respond to multiple extracellular matrix signals,which provide biophysical and biochemical cues to regulate the fate of residing ***,the direct transplantation of DSCs suffers from poor proliferation and differentiation toward functional cells and low survival rates due to local ***,elegant advances in the design of novel biomaterials have been made to give promise to the use of biomimetic biomaterials to regulate various cell behaviors,including proliferation,differentiation and *** could be tailored with multiple functionalities,e.g.,*** is an emerging need to summarize recent advances in engineered biomaterials-mediated delivery and therapy of DSCs and their potential ***,we outlined the design of biomaterials for supporting DSCs and the host response to the transplantation.

关键词： dental-derived stem cells biomaterials host response tissue engineering

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Airstacknet: A Stacking Ensemble-Based Approach for Air Quality Prediction

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Computers, Materials & Continua 2023年第1期74卷 2073-2096页

作者： Amel Ksibi Amina Salhi Ala Saleh Alluhaidan sahar A.El-Rahman Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityRiyadhSaudi Arabia Electrical Engineering Department Faculty of Engineering-ShoubraBenha UniversityCairoEgypt

The quality of the airwe breathe during the courses of our daily lives has a significant impact on our health and well-being as ***,personal air quality measurement remains *** this study,we investigate the use of first-person photos for the prediction of air *** main idea is to harness the power of a generalized stacking approach and the importance of haze features extracted from first-person images to create an efficient new stacking model called AirStackNet for air pollution *** consists of two layers and four regression models,where the first layer generates meta-data fromLight Gradient Boosting Machine(Light-GBM),Extreme Gradient Boosting Regression(XGBoost)and CatBoost Regression(CatBoost),whereas the second layer computes the final prediction from the meta-data of the first layer using Extra Tree Regression(ET).The performance of the proposed AirStackNet model is validated using public Personal Air Quality Dataset(PAQD).Our experiments are evaluated using Mean Absolute Error(MAE),Root Mean Square Error(RMSE),Coefficient of Determination(R2),Mean Squared Error(MSE),Root Mean Squared Logarithmic Error(RMSLE),and Mean Absolute Percentage Error(MAPE).Experimental Results indicate that the proposed AirStackNet model not only can effectively improve air pollution prediction performance by overcoming the Bias-Variance tradeoff,but also outperforms baseline and state of the art models.

关键词： Personal air quality prediction airstacknet ensemble learning feature extraction stacking

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Traditional and modern aspects of hemorrhoid treatment in Iran:a review

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Journal of Integrative Medicine 2018年第2期16卷 90-98页

作者： sahar Dehdari Homa Hajimehdipoor Somayeh Esmaeili Rasool Choopani Seyed Alireza Mortazavi Student Research Committee Department of Traditional PharmacySchool of Traditional MedicineShahid Beheshti University of Medical Sciences Traditional Medicine and Materia Medica Research Center and Department of Traditional Pharmacy School of Traditional MedicineShahid Beheshti University of Medical Sciences Department of Traditional Medicine School of Traditional MedicineShahid Beheshti University of Medical Sciences Department of Pharmaceutics School of PharmacyShahid Beheshti University of Medical Sciences

Hemorrhoidal disease is a prevalent anorectal condition which is generally not managed well with cur- rent pharmacologic interventions. However, in Iranian traditional medicine （ITM） there are numerous plants with hemorrhoid-healing properties. The present research assembled plants with hemorrhoid- healing properties in ITM; their related pharmacological effects, phytochemical constituents and mech- anisms of action in the modern medicine were also gathered. For this purpose, leading ITM textbooks were searched for plants with hemorrhoid-healing effects. Further, in vitro, in vivo and clinical studies on the most cited species were considered using scientific databases. Studying ITM textbooks revealed 37 medicinal plants with hemorrhoid-healing effects. Among the mentioned herbal medicines, six species, including Allium ampeloprasum, Phyllanthus emblica, Aloe vera, Terminalia chebula, Vitis vinifera and Comrniphora mukul, had the largest number of related pharmacological effects documented in scientific databases. These herbs from ITM should be considered as important resources for producing novel drugs for hemorrhoid treatment.

关键词： Clinical study HemorrhoidsIn vitro In vivoPlants Iranian traditional medicine

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Recent advances in the management of autoimmune pancreatitis in the era of artificial intelligence

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World Journal of Gastroenterology 2022年第48期28卷 6867-6874页

作者： sahar Mack Yves Flattet Philippe Bichard Jean Louis Frossard Division of Gastroenterology Department of Medical SpecialtiesUniversity Hospital of GenevaGeneva 1205Switzerland

Autoimmune pancreatitis(AIP)is a type of immune-mediated pancreatitis subdivided into two subtypes,type 1 and type 2 ***,type 1 AIP is considered to be the pancreatic manifestation of the immunoglobulin G4(IgG4)-related ***,AIP is increasingly researched and recognized,although its diagnosis represents a challenge for several reasons:False positive ultrasound-guided cytological samples for a neoplastic process,difficult to interpret levels of IgG4,the absence of biological markers to diagnose type 2 AIP,and the challenging clinical identification of atypical ***,60%and 78%of type 1 and type 2 AIP,respectively,are retrospectively diagnosed on surgical specimens of resected pancreas for suspected *** distinguishing AIP from pancreatic ductal adenocarcinoma can be challenging,obtaining a definitive diagnosis can therefore prove difficult,since endoscopic ultrasound fine-needle aspiration or biopsy of the pancreas are *** paper focuses on recent innovations in the management of AIP with regard to the use of artificial intelligence,new serum markers,and new therapeutic approaches,while it also outlines the current management recommendations.A better knowledge of AIP can reduce the recourse to surgery and avoid its overuse,although such an approach requires close collaboration between gastroenterologists,surgeons and *** knowledge on AIP and IgG4-related disease remains necessary to diagnose and manage patients.

关键词： Autoimmune pancreatitis Pancreatic ductal adenocarcinoma Immunoglobulin G4-related disease Prednisone Rituximab Artificial intelligence Plasmablasts

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