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A Novel Fusion System Based on Iris and Ear Biometrics for E-exams

Intelligent Automation & Soft Computing 2023年第3期35卷 3295-3315页

作者： S.A.Shaban hosnia m.m.ahmed D.L.Elsheweikh Department of Computer Science Faculty of Specific EducationMansoura UniversityEgypt

With the rapid spread of the coronavirus epidemic all over the world,educational and other institutions are heading towards *** the era of digitization,identifying educational e-platform users using ear and iris based multi-modal biometric systems constitutes an urgent and interesting research topic to pre-serve enterprise security,particularly with wearing a face mask as a precaution against the new coronavirus *** study proposes a multimodal system based on ear and iris biometrics at the feature fusion level to identify students in electronic examinations(E-exams)during the COVID-19 *** proposed system comprises four ***ﬁrst step is image preprocessing,which includes enhancing,segmenting,and extracting the regions of *** second step is feature extraction,where the Haralick texture and shape methods are used to extract the features of ear images,whereas Tamura texture and color histogram methods are used to extract the features of iris *** third step is feature fusion,where the extracted features of the ear and iris images are combined into one sequential fused *** fourth step is the matching,which is executed using the City Block Dis-tance(CTB)for student identiﬁ***ﬁndings of the study indicate that the system’s recognition accuracy is 97%,with a 2%False Acceptance Rate(FAR),a 4%False Rejection Rate(FRR),a 94%Correct Recognition Rate(CRR),and a 96%Genuine Acceptance Rate(GAR).In addition,the proposed recognition sys-tem achieved higher accuracy than other related systems.

关键词： City block distance(CTB) Covid-19 ear biometric e-exams feature-level fusion iris biometric multimodal biometric student’s identity

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Accumulation of Some Heavy metals in <i>Oreochromis niloticus</i>from the Nile in Egypt: Potential Hazards to Fish and Consumers

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Journal of Environmental Protection 2015年第9期6卷 1003-1013页

作者： hosnia S. Abdel-mohsien manal A. m. mahmoud Department of Animal Hygiene Faculty of Veterinary Medicine Assiut University Assiut Egypt

Exposure to heavy metals is an important environmental problem resulting from anthropogenic activities. The aim of this study was the evaluation of some heavy metals as cadmium (Cd), lead (Pb), chromium (Cr) and aluminum (Al), in muscle of fresh water fish Oreochromis niloticus from ten provinces all over Egypt to assess its possible hazards on fish and consumers. The analyzed metals could be detected in all examined samples and their order was Pb > Cr > Cd > Al. A positive correlation between Al concentration and the fish length was observed. The concentrations of Pb, Cd and Cr in fish samples were several times higher than their concentration in water and the bioaccumulation Factor (BAF) ranged from 8.22 - 122.6. The estimated weekly intake of Cd, Pb and Cr for a 70 kg person consuming fish in Egypt (7.94, 15.84 and 9.8 μg) is well below the Provisional Permissible Tolerable Weekly Intake (PTWI) recommended by FAO/WHO. Although heavy metal levels in Egypt exceed the maximum permissible limits recommended by Egypt and WHO in some fish samples, the consumption of Nile O. niloticus from Egypt is safe on human health.

关键词： Oreochromis niloticus Cadmium Lead Chromium Aluminum Nile River

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Antioxidant Properties of Chinese Propolis in Ross Broilers Exposed to Heat Stress in Egypt

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Open Journal of Veterinary medicine 2015年第9期5卷 197-209页

作者： manal A. m. mahmoud hosnia S. Abdel-mohsein mohamed R. F. Farghali Department of Animal Hygiene Faculty of Veterinary Medicine Assiut University Assiut Egypt

Detrimental effects of heat stress that causes great loss to poultry industry have grown the global attention for the importance of natural antioxidant in alleviating the oxidative stress symptoms in poultry. The antioxidant effect of Chinese ether extract propolis (EEP) on broilers (Ross 308) exposed to chronic heat stress has been evaluated. Eighty broilers (15 days old) were randomly allocated into five equal groups;each received a maintenance diet supplemented by vitamin C (250 mg/kg diet) or propolis (250, 500 and 750 mg/kg diet) or not supplemented (control) for 27 consecutive days. Blood samples were collected to analyze serum corticosteron, total antioxidant capacity (TAC) and lipid peroxidation activity (mDA) at the end of the experiment. moreover, the active chemical components responsible for the biological activities of EEP have been determined using Gas Chromatography/mass Spectrometry (GC/mS). Results revealed a significant decrease in corticosterone levels in broilers after vit C or EEP supplementation. This improvement is parallel to a significant increase in TAC and decrease in mDA in broilers after EEP supplementation, which may be due to its high flavonoid content. Results show that Chinese EEP has biologically active compounds responsible for excellent antioxidant activities that ameliorate the negative impacts of elevated temperature in summer season in Egypt.

关键词： Propolis Total Antioxidant Corticosterone Poultry

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