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Dielectric spectroscopy coupled with artificial neural network for classification and quantification of sesame oil adulteration

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Information Processing in Agriculture 2022年第2期9卷 233-242页

作者： mahmoud Soltani Firouz mahmoud Omid Mehrdad Babaei Mahdi Rashvand Department of Agricultural Machinery Engineering Faculty of Agricultural Engineering and TechnologyUniversity of TehranKarajIran Machine Design and Mechatronics Department Institute of MechanicsIranian Research Organization for Science and TechnologyTehranIran

Adulteration using cheap vegetable oils into expensive oils such as sesame oil is a considerable challenge in the edible oil market. To discriminate pure and adulterated sesame oilwith sunflower and canola oils (commonly used as an adulterant to the high-price oils),dielectric spectroscopy was applied in the range of 40 kHz–20 MHz. The principal component analysis (PCA) plots were able to distinguish the pure sesame oil, while it was impossible to separate the adulterated oils based on the kind of adulteration. The correlationbased feature selection (CFS) method was used to select the more relevant dielectric datawithin the spectrum and to reduce the dimensionality of the input vector belongs to theartificial neural network (ANN). The ANN classifier with topology of 19-5-4 structureshowed a perfect accuracy of 100% in detecting the authentic and the adulterated sesameoil. The regression ANN with the topology of 15-5-1, 21-8-1 and 10-11-1 were the mostrobust models in quantifying the amount of adulteration in sesame oil generated by sun-flower oil, canola oil and sunflower + canola oils, with R2Test of 1, 1 and 0.999 9, *** proposed technique is a powerful and simple method to detect and quantify adulteration of sesame oil. The novelty of this research is capability of used system for authentication of adulterated sesame oil using low frequency. Furthermore, the developed systemhas a good capability for other types of sesame oil adulterations as well as to detect adulteration in other expensive edible oils.

关键词： Adulteration Artificial neural network Chemometrics Sesame oil Correlation-based feature selection Principal component analysis

A hybrid simulation approach to evaluate stimulation micro-seismic events and production potential of fractured geothermal reservoirs

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Petroleum Research 2020年第2期5卷 131-143页

作者： Reda abdel Azim Petroleum Engineering Department American University of Kurdistan Zakho Rd.99641DohoukIraq

This study presents an integrated approach to simulate fluid flow and to predict the micro seismic eventsduring stimulation and circulation of cold water over a longer term in geothermal reservoirs. The integrated approach based on new three dimensional fully coupled thermo-poroelastic numerical model forevaluation of energy recoverable. In the presented approach, the fracture aperture due to fractureslippage is calculated by shear and dilation. The shear slippage is controlled by the concept of shearfailure using linear Mohr-Coulomb criterion. The numerical model is validated against an analytical Oda’smodel for permeability tensor calculation and against an analytical solution for thermo-poroelasticmodel. The heat transfer between the rock and fluid is modelled by using the conductive heat transferwithin the reservoir rock and convective heat transfer in discrete fractures. The thermal stress changesare included in the model to be studied by using roughness induced shear displacement principle in aporo-thermo-elastic environment. The fracture aperture changes are estimated by using an analyticalmodel based on the distributed dislocation technique. The roughness of fracture surfaces is used in thecalculation of residual fracture aperture. The presented approach is used to study the potential ofpermeability enhancement for Habanero geothermal reservoir at a depth of 3600 m. The result show thatthe increasing in tensile effective stress tend to increase the fracture aperture within the zone of *** increasing in fracture aperture led to significant changes in pressure distribution (decrease inimpedance) and hence, increase in the flow rate.

关键词： Fractured reservoirs Finite element Permeability tensor Fracture aperture Tensile stress Fractal density and dimension

A Preliminary Study on Combination Therapy of Artemisinin Dimer Oxime and Topotecan against Nonsmall Cell Lung Cancer in Mice

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World Journal of Traditional Chinese Medicine 2018年第1期4卷 8-14页

作者： Mohammad K.Ashfaq Mohamed Sadek abdel-Bakky Mir Tahir Maqbool Waseem Gul mahmoud A.ElSohly National Center for Natural Product Research School of Pharmacy University of Mississippi University Faculty of Pharmacy Al-Azhar University ElSohly Laboratory Incorporation Industrial Drive Oxford Department of Pharmaceutics School of PharmacyUniversity of Mississippi University

Background: Artemisinin dimer oxime – dimer molecule synthesized from artemisinin possesses high bioavailability and marked in vitro anticancer activities against solid tumor?derived cell lines, endothelial cell proliferation, migration, and angiogenic processes. Numerous murine models have been developed to study human cancer. The most widely used models are the human tumor xenograft mouse model. Materials and Methods: In this study, human tumor cells(NCI?H640, 1 × 107 in 100 μL) are implanted subcutaneously, or 1 × 107 in 50 μL in the thoracic cavity, in athymic nude mice(nu/nu). The implanted cells were allowed to grow for 10 days before initiation of drug treatment(dimer oxime and topotecan, ip). Tumor volume and thoracic/body weight ratio were recorded. Results: We successfully established subcutaneous and thoracic xenografts with human nonsmall cell lung cancer cell line xenografts in athymic nude mice in only 10 days. Using these models, we attempted treatment of xenografts with topotecan – a known anticancer drug and artemisinin dimer oxime or combination of these two drugs. Combination therapy showed a significant reduction in tumor volume and tumor/body weight. Treatments with combination of topotecan and dimer oxime resulted in the reduced mortality rates in comparison with untreated mice. Conclusions: Xenograft tumor models are useful for preclinical screening of new pharmacophores. From this preliminary study, it appears that combination of dimer oxime and topotecan may be used as chemotherapeutic agents against nonsmall cell lung cancer. Further studies are needed to evaluate other combination treatment regimens as well as the mechanism(s) of action.

关键词： Artemisinin cancer dimer oxime topotecan xenografts

Arabic Bank Check Processing: State of the Art

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Journal of Computer Science & Technology 2013年第2期28卷 285-299页

作者： Irfan Ahmad Sabri A.mahmoud Information and Computer Science Department King Fahd University of Petroleum & Minerals

In this paper, we present a general model for Arabic bank check processing indicating the major phases of a check processing system. We then survey the available databases for Arabic bank check processing research. The state of the art in the different phases of Arabic bank check processing is surveyed （i.e., pre-processing, check analysis and segmentation, features extraction, and legal and courtesy amounts recognition）. The open issues for future research are stated and areas that need improvements are presented. To the best of our knowledge, it is the first survey of Arabic bank check processing.

关键词： handwriting analysis document analysis text processing feature evaluation and selection pattern analysis

Source localization based on field signatures:Laboratory ultrasonic validation

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Journal of Electronic Science and Technology 2024年第3期22卷 47-56页

作者： mahmoud Eissa Dmitry Sukhanov Department of Radiophysics Tomsk State UniversityTomsk634050Russia Higher Institute for Applied Sciences and Technology(HIAST) Damascus31983Syria

Location awareness in wireless networks is essential for emergency services,navigation,gaming,and many other *** article presents a method for source localization based on measuring the amplitude-phase distribution of the field at the base *** existing scatterers in the target area create unique scattered field interference at each source *** unique field interference at each source location results in a unique field signature at the base station which is used for source *** the proposed method,the target area is divided into a grid with a step of less than half the *** grid node is characterized by its field signature at the base *** signatures corresponding to all nodes are normalized and stored in the base station as fingerprints for source *** normalization of the field signatures avoids the need for time synchronization between the base station and the *** a source transmits signals,the generated field signature at the base station is normalized and then correlated with the stored *** maximum correlation value is given by the node to which the source is the *** simulations and results of experiments on ultrasonic waves in the air show that the ultrasonic source is correctly localized using broadband field signatures with one base station and without time *** proposed method is potentially applicable for indoor localization and navigation of mobile robots.

关键词： Base station Field signature Fingerprints Localization Ultrasonic frequencies

Blood exosomes as a tool for monitoring treatment efficacy and progression of neurodegenerative diseases

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Neural Regeneration Research 2019年第1期14卷 72-74页

作者： Hanin abdel-Haq National Center for Drug Research and Evaluation Istituto Superiore di Sanità

Alzheimer’s disease,Parkinson’s disease,Huntington’s disease,amyotrophic lateral sclerosis,and prion disease are representative neurodegenerative diseases that share common sub-cellular features,the most obvious of which is a strong association with the accumulation of misfolded,aggregated,and insoluble forms of proteins in the brain,as evidenced in post-mortem brain tissues of *** of neurodegenerative diseases is often

关键词：疾病治疗功效 cellular 工具 prion 蛋白质大脑

Aerodynamic Characteristics of Conventional and Innovative High Lift Swept Wings

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Journal of Bionic Engineering 2019年第3期16卷 432-441页

作者： Mojtaba Ramezani Voloojerdi mahmoud Mani Aerospace Engineering Department Amirkabir University of Technology 424 Hafez Ave Tehran 158757413 Iran

The new bird inspired wing sweep was introduced and compared with straight and conventional swept wings in gliding flight by an experimental test setup. Due to the similarity with the birds, wing, all test models have S1223 airfoil. Swept models inspired from the bird consist of two parts: the straight part near the root and the swept part near the tip. Aerodynamic forces on each wing were measured from 0° to 24° angles of attack and Reynolds numbers of 4.3×10^4, 8.6×10^4, 1.3×10^5, and 1.7× 10^5. Wind tunnel test results show that wings with an innovative sweep at α> 0 have more lift for Reynolds numbers between 4.3× 10^4 and 8.6×10^4. Also, innovative sweep increases the stall angle, and the wing did not stall until α = 24° for Reynolds between 1.3×10^5 and 1.7×10^5. An increase in lift and having sufficient aerodynamic performance in low Reynolds numbers for birds' inspired wing sweep in gliding flight may be the answer to why the wing sweep of birds is not like conventional sweeps.

关键词： bio-inspired wing wing sweep wing aerodynamics bird wing low Reynolds number

Differentiation of murine male germ cells to spermatozoa n a soft agar culture system

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Asian Journal of Andrology 2012年第2期14卷 285-293页

作者： mahmoud Abu Elhija Eitan Lunenfeld Stefan Schlatt mahmoud Huleihel The Shraga Segal Department of Microbiology and Immunology Faculty of Health Sciences Ben-Gurion University of the Negev Beer-Sheva 84105 Israel Department of Obstetrics and Gynecology Soroka University Medical Center and Faculty of Health Sciences Ben-Gurion University of the Negev Beer-Sheva 84105 Israel Centre of Reproductive Medicine and Andrology of the University of Menster Menster 84149 Germany

Establishment of an in vitro system that allows the development of testicular germ cells to sperm will be valuable for studies of spermatogenesis and future treatments for male infertility. In the present study, we developed in vitro culture conditions using three-dimensional agar culture system （SACS）, which has the capacity to induce testicular germ cells to reach the final stages of spermatogenesis, including spermatozoa generation. Seminiferous tubules from testes of 7-day-old mice were enzymatically dissociated, and intratubular cells were cultured in the upper layer of the SACS in RPMI medium supplemented with fetal calf serum （FCS）. The lower layer of the SACS contained only RPMI medium supplemented with FCS. Colonies in the upper layer were isolated after 14 and 28 days of culture and were classified according to their size. Immunofluorescence and real-time PCR were used to analyse specific markers expressed in undifferentiated and differentiated spermatogonia （Vasa, Dazl, OCT-4, C-Kit, GFR- a-l, CD9 and a-6-integrin）, meiotic cells （LDH, Crem-1 and Boule） and post-meiotic cells （Protamine-1, Acrosin and SP-IO）. Our results reveal that it is possible to induce mouse testicular pre-meiotic germ cell expansion and induce their differentiation to spermatozoa in SACS. The spermatozoa showed normal morphology and contained acrosomes. Thus, our results demonstrate that SACS could be used as a novel in vitro system for the maturation of pre-meiotic mouse germ cells to post-meiotic stages and morphologically-normal spermatozoa.

关键词： acrosome agar in vitro culture meiosis spermatogenesis spermatogonia spermatozoa testis

Theoretical Approach to Change Blast Furnace Regime With Natural Gas Injection

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Journal of Iron and Steel Research International 2013年第9期20卷 40-46页

作者： K S abdel Halim Central Metallurgical Research and Development Institute(CMRDI)

The operation of blast furnace using natural gas and oxygen enriched blast （composite blast technology） is considered in many countries to be standard operation for a modern blast furnace particularly in certain countries with cheap and stable supply of natural gas. The theoretical flame temperature （TFT） of combustion and the degree of di-rect reduction of iron oxides （rd） are considered as the main controlling parameters of composite blast technology. The calculated values of these parameters are mainly dependent on the amount of air blast consumption. This amount of air blast is measured before entering into blast stoves, Actually, some of air blast is lost through valves of air stoves. Consequently, the real volume of air blast in the furnace is less than the recorded value by amounts of 5%-15% which is not considered in the estimation of rd and TFT. The purpose is to analyze the different methods for es-timation of air blast inside the blast furnaces and develop a theoretical model to calculate air blast eonsumption with high accuracy. Based on the calculation of air blast consumption, a complete roadmap is demonstrated to change the operation regime parameters of blast furnaces working on composite blast technology.

关键词： composite blast technique natural gas blast consumption theoretical flame temperature direct reduc-tion degree iron oxide