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Search for production of dark fermion candidates in association with heavy neutral gauge boson decaying to dimuon in proton-proton collisions at√s=8 TeV using CMS open data

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Chinese Physics C 2024年第4期48卷 6-13页

作者： Y.mahmoud H.abdallah M.T.Hussein S.Elgammal Centre for theoretical physics The British University in EgyptEgypt Physics Department Faculty of ScienceCairo UniversityEgypt

In this study,we conducted a search for dark matter using a part of the data recorded by the CMS experiment during run-I of the LHC in 2012 with a center of mass energy of 8 TeV and an integrated luminosity of 11.6 fb−*** data were gathered from the CMS open *** matter,in the framework of the simplified model(mono-Z′),can be produced from proton-proton collisions in association with a new hypothetical gauge boson,Z′.Thus,the search was conducted in the dimuon plus large missing transverse momentum *** benchmark scenario of mono-Z′,which is known as light vector,was used for interpreting the CMS open *** evidence of dark matter was observed,and exclusion limits were set on the masses of dark matter and Z′at 95%confidence level.

关键词： dark matter large hadron collider CMS open data search for new physics dark fermion

Petrogenesis,Geodynamics and Radioactivity of the Granitic Rocks of the Nugrus Weakness Zone,South Eastern Desert,Egypt

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Acta Geologica Sinica(English Edition) 2021年第4期95卷 1183-1198页

作者： Soliman ABU ELATTA abdallah mahmoud Gehad M.R.MANSOUR Nuclear Materials Authority CairoEgypt.P.O.Box 530 El Maadi

The studied granitic bodies belong to the south Eastern Desert of *** extend in a NNW–SSE trend along the same strike of the Nugrus weakness zone by which they are structurally *** rocks are composed of biotite and biotite-muscovite monzogranites to ***,a higher abundance of Ba and Rb in biotite granites with a relatively low abundance in biotite-muscovite granites as well as the diversity of Th,U,Nb,Ta,Zr,and REE reflects their origin from different sources and geodynamic *** biotite granites are predominantly metaluminous to low peraluminous whereas the biotite-muscovite granites have a peraluminous *** enrichment at the expense of calcium in these rocks reflects a derivation from crustal sources by partial melting in the presence of a volatile *** investigation showed high abundances of U(up to 38 ppm)and Th(up to 26 ppm)in biotite-muscovite granites relative to biotite granites(up to 5 ppm U and 18 ppm Th).Radioactive anomalies furthermore have been recorded in parts of biotite-muscovite granites that were affected by the faults(up to 116 ppm eU and 97 ppm eTh).Consequently,biotite-muscovite granites form a potentially fertile source for uranium mineralization.

关键词： partial melting biotite-muscovite granites peraluminous geodynamic radioactivity Nugrus

An Attention-Based Approach to Enhance the Detection and Classification of Android Malware

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Computers, Materials & Continua 2024年第8期80卷 2743-2760页

作者： abdallah Ghourabi Department of Computer Science College of Computer and Information SciencesJouf UniversitySakaka72388Saudi Arabia

The dominance of Android in the global mobile market and the open development characteristics of this platform have resulted in a significant increase in *** malicious applications have become a serious concern to the security of Android *** address this problem,researchers have proposed several machine-learning models to detect and classify Android malware based on analyzing features extracted from Android ***,most existing studies have focused on the classification task and overlooked the feature selection process,which is crucial to reduce the training time and maintain or improve the classification *** current paper proposes a new Android malware detection and classification approach that identifies the most important features to improve classification performance and reduce training *** proposed approach consists of two main ***,a feature selection method based on the Attention mechanism is used to select the most important ***,an optimized Light Gradient Boosting Machine(LightGBM)classifier is applied to classify the Android samples and identify the *** feature selection method proposed in this paper is to integrate an Attention layer into a multilayer perceptron neural *** role of the Attention layer is to compute the weighted values of each feature based on its importance for the classification *** evaluation of the approach has shown that combining the Attention-based technique with an optimized classification algorithm for Android malware detection has improved the accuracy from 98.64%to 98.71%while reducing the training time from 80 to 28 s.

关键词： Android malware malware detection feature selection attention mechanism LightGBM mobile security

Adaptive Segmentation for Unconstrained Iris Recognition

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Computers, Materials & Continua 2024年第2期78卷 1591-1609页

作者： Mustafa AlRifaee Sally Almanasra Adnan Hnaif Ahmad Althunibat Mohammad abdallah Thamer Alrawashdeh Faculty of Architecture and Design Al-Zaytoonah University of JordanAmman11733Jordan Faculty of Computer Studies Arab Open UniversityRiyadh11681Saudi Arabia Faculty of Science and Information Technology Al-Zaytoonah University of JordanAmman11733Jordan

In standard iris recognition systems,a cooperative imaging framework is employed that includes a light source with a near-infrared wavelength to reveal iris texture,look-and-stare constraints,and a close distance requirement to the capture *** these conditions are relaxed,the system’s performance significantly deteriorates due to segmentation and feature extraction ***,a novel segmentation algorithm is proposed to correctly detect the pupil and limbus boundaries of iris images captured in unconstrained ***,the algorithm scans the whole iris image in the Hue Saturation Value(HSV)color space for local maxima to detect the sclera *** image quality is then assessed by computing global features in red,green and blue(RGB)space,as noisy images have heterogeneous *** iris images are accordingly classified into seven categories based on their global RGB *** the classification process,the images are filtered,and adaptive thresholding is applied to enhance the global contrast and detect the outer iris ***,to characterize the pupil area,the algorithm scans the cropped outer ring region for local minima values to identify the darkest area in the iris *** experimental results show that our method outperforms existing segmentation techniques using the UBIRIS.v1 and v2 databases and achieved a segmentation accuracy of 99.32 on UBIRIS.v1 and an error rate of 1.59 on UBIRIS.v2.

关键词： Image recognition color segmentation image processing localization

Entrepreneurship training:its influences on innovation potentials among nursing students

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Frontiers of Nursing 2024年第1期11卷 85-98页

作者： Asmaa Abdel Rahman Abdel Rahman Dalia abdallah Abdelatief Medical Surgical Nursing Department Faculty of NursingAin Shams UniversityCairoEgypt

Objective:To evaluate the influences of entrepreneurship training on the innovation potential among nursing ***:A quasi-experimental design was utilized to conduct this *** study was conducted in the classroom at the faculty of nursing,and the“i Hub”center at Ain Shams University(ASU)in Cairo,Egypt.A purposive sample of 42 nursing students who participated in the“Ain Shams University-innovate”competition from the Faculty of Nursing of ASU were included in this *** collection tools included(1)Nursing students'innovation skills assessment questionnaire and(2)Innovative projects evaluation ***:There was a statistically significant difference between the mean scores of nursing students'total innovation skills pre-and post-implementation of entrepreneurship training,where P-value<***:The results of the current study support the research hypothesis because the implementation of entrepreneurship training positively affects nursing students'innovation *** entrepreneurship education in nursing and integrating it into nursing programs will stimulate creativity,innovation,and entrepreneurship among nursing students and health care services.

关键词： entrepreneurship training innovation potentials nursing students creative skills energy/motivation

Intraocular pressure before and after capsulorhexis using two viscoelastic substances and two surgical approaches in enucleated porcine eyes

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International Journal of Ophthalmology(English edition) 2024年第6期17卷 1156-1160页

作者： Chiraz Ben abdallah Walter Sekundo Markus SLadewig Daniel M.Handzel Augenzentrum Osthessen Fulda 36037Germany University Eye Hospital Philipps-University Marburg 35043Germany University Eye Hospital Philipps-University Campus FuldaFulda 36043Germany

AIM:To investigate the influence of ophthalmic viscoelastic devices(OVDs)and different surgical approaches on the intraocular pressure(IOP)before and after creation of the curvilinear circular capsulorhexis(CCC)as a measure for anterior chamber stability during this ***:Prospective experimental WetLab study carried out on enucleated porcine *** was measured before and after CCC with the iCare Rebound tonometer(iCare ic200;iCare Finland Oy,Vantaa,Finland).The OVDs used were a cohesive one[Z-Hyalin,Carl Zeiss Meditec AG,Germany;hyaluronic acid(HA)]and a dispersive[Z-Celcoat,Carl Zeiss Meditec AG,Germany;hydroxy propylmethylcellulosis(HPMC)].The CCC was created using Utrata forceps or 23 g microforceps in different combinations with the ***:Using the Utrata forceps the IOP dropped from 63.65±6.44 to 11.25±3.63 mm Hg during the *** use of different OVDs made no *** the 23 g microforceps the IOP dropped from 65.35±8.15 to 36.55±6.09 mm *** difference between IOP drop using either Utrata forceps or 23 g microforceps was highly significant regardless of the OVD ***:Using the sideport for the creation of the capsulorhexis leads to a lesser drop in IOP during this maneuver compared to the main incision in enucleated porcine *** use of different OVD has no significant influence on IOP drop.

关键词： cataract surgery ophthalmosurgical viscoelastic device intraocular pressure capsulorhexis enucleated porcine eye

Accuracy and precision of dried urine spot method for the detection of Schistosoma mansoni circulating cathodic antigens in resource-limited settings

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Infectious Diseases of Poverty 2024年第1期13卷 103-104页

作者： abdallah Zacharia Clemence Kinabo Twilumba Makene Huda Omary George Ogweno Faraja Lyamuya Billy Ngasala Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania National Institute for Medical Research Mwanza Tanzania Neglected Tropical Diseases Control Program Ministry of Health Dodoma Tanzania

Background The World Health Organization recommends the use of Schisto point-of-care circulating cathodic anti-gens(Schisto POC-CCA)for screening of Schistosoma mansoni as it offers better sensitivity than ***,there are limitation facing the use of this method including timely availability of the test *** aim of this study was to determine the reliability of dried urine spot(DUS)method for collection of urine and detection of *** using Schisto POC-CCA cassettes in a resource-limited *** A cross-sectional study was conducted between October and November 2022 among 250 primary school children in Sengerema District,northwestern *** CCA was detected in filter paper-based DUSs,liquid urine using DUS Schisto POC-CCA(index),and direct urine Schisto POC-CCA(comparator)methods *** eggs in stool were detected using duplicate Kato-Katz(KK)*** measures of accuracy were com-puted and compared between the index and comparator *** strength of agreement between inter-raters precisions was tested using Cohen's kappa(k).Results This study revealed *** prevalence rates of 28.8%,54.0%and 50.8%by duplicate KK,direct urine Schisto POC-CCA and DUS Schisto POC-CCA methods *** mean intensity of infection among infected participants Was 86.3 eggs per gram of stool(EPG)ranging from 12.0 EPG to 824.0 *** sensitivity of DUS Schisto POC-CCA and direct urine Schisto POC-CCA Was 94.44%(95%CI:89.15-99.74%)and 97.22%(95%CI:93.43-100.00%)*** DUS Schisto POC-CCA method had slightly higher specificity(66.85%)than direct urine Schisto POC-CCA method(63.48%).The accuracy of the DUS Schisto POC-CCA Was found to be slightly high(74.80%,95%CI:68.94-79.06%)compared to that of direct urine Schisto POC-CCA(73.20%,95%CI:67.25-78.59%).There was good agreement between two laboratory technologists who performed the DUS Schisto POC-CCA method on similar samples(k=0.80,95%CI:0.59-0.95).Con

关键词： Accuracy Point-of-care circulating cathodic antigen Dried urine spot Schistosoma mansoni Sensiti Specificity

Knock-out of BnHva22c reduces the susceptibility of Brassica napus to infection with the fungal pathogen Verticillium longisporum

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The Crop Journal 2024年第2期12卷 503-514页

作者： Wanzhi Ye Roxana Hossain Michael Prbsting abdallah Abdelmegid Mohamed Ali Lingyue Han Ying Miao Steffen Rietz Daguang Cai Dirk Schenke Department of Molecular Phytopathology and Biotechnology Institute of PhytopathologyChristian-Albrechts-University of KielKielGermany Institut für Zuckerrübenforschung GöttingenGermany Plant Pathology Department Faculty of Agriculture and Natural ResourcesAswan UniversityAswanEgypt Fujian Provincial Key Laboratory of Plant Functional Biology College of Life SciencesFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Hohenlieth-Hof NPZ Innovation GmbHHoltseeGermany

Verticillium longisporum(Vl43)is a soilborne hemibiotrophic fungal pathogen causing stem striping on oilseed rape(OSR)and severe yield *** for resistant varieties is the most promising approach to control this ***,we report the identification of Hva22c as a novel susceptibility factor and its potential for improving OSR ***22c is a member of the Hva22 gene family,originally described for barley(Hordeum vulgare).Several Hva22 members have been located at the endoplasmic ***22c is up-regulated in response to Vl43 in both Arabidopsis and *** demonstrate that knock-out of Hva22c in OSR by CRISPR/Cas9 and its homolog in Arabidopsis by T-DNA insertion reduced plants’susceptibility to Vl43 infection and impaired the development of disease *** understand the underlying mechanism,we analysed transcriptomic data from infected and non-infected roots of hva22c knock-out and wild type *** identified a homozygous mutant with frame-shifts in all four BnHva22c loci displaying a vastly altered transcriptional landscape at 6 ***,a large set of genes was suppressed under mock conditions including genes related to the endomembrane *** the up-regulated genes we found several defense-related and phytohormone-responsive genes when comparing mutant to the wild *** results demonstrate that Hva22c is functionally required for a fully compatible plant-fungus *** loss of function reduces plant susceptibility,most likely due to endoplasmatic reticulum and Golgi dysfunction accompanied by additionally activated defense *** findings can help improve OSR resistance to *** infection.

关键词： Hva22c Susceptibility factor CRISPR/Cas9 Brassica napus Arabidopsis Verticillium longisporum Resistance breeding

Immune Response after Hepatitis B Vaccination among Egyptian Medical Students in Nile Delta

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World Journal of Vaccines 2015年第3期5卷 140-146页

作者： Reem Elmaghlob Gamal El Didamony Ashraf Elbahrawy abdallah mahmoud abdallah mahmoud Haddad Hemida Ahmed Elwassief Mohamed Salah Ali Ahmed Al-Ashker Abdel-Gawad Saied Mohammad Mohamed Hanafy Morsy Hafez Abdelhafeez Department of Microbiology and Botany Faculty of Science Al-Zakazik University Al-Zakazik Egypt Department of Internal Medicine Al-Azhar School of Medicine Al-Azhar University Cairo Egypt Department of Clinical Pathology Al-Azhar School of Medicine Al-Azhar University Cairo Egypt

Background: Early promotion of hepatitis B (HB) vaccination among health care workers is an important component of the HBV infection control. No available data assess immune response of HB vaccination among Egyptian medical students. Objective: we conducted this study to evaluate the immune response among medical students after completion of their vaccination schedule. Methods: A total of 150 Egyptian medical students were included. Three doses of recombinant HB vaccine had been administered to all participating students at 0, 1 and 6 months. Antibody to hepatitis B surface antigen (Anti-HBs) titers, hepatitis B surface antigen (HBsAg), and total antibody to hepatitis B core antigen (anti-HBc) were measured by enzyme immunoassay, 1 to 2 months after completion of vaccination course. Results: Among 150 students included, the mean age was 22.4 ± 1.7 years (range 18 - 28 years). Fifty nine (39.4%) were males and 91 (60.6%) were females. All students have anti-HBs levels more than 100 IU/L. The mean anti-HBs of included students was 8994.2 ± 6373.1 IU/L. There was no significant difference of anti-HBs levels regarding age, sex, residence or body mass index distribution. Conclusion: Early HB vaccination of health care workers is associated with good immune response and should be encouraged.

关键词： HBV HB Vaccine Medical Students Anti-HBs Egypt