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Journal of Geoscience and Environment Protection 2015年第6期3卷 77-82页

作者： sameh adib abou rafee Ana Beatriz Kawashima Marcos Vinícius Bueno de Morais Viviana Urbina Leila Droprinchinski Martins Jorge Alberto Martins Department of Physics Federal University of Technology-ParanaLondrinaBrazil Department of Chemistry Federal University of Technology-ParanaLondrinaBrazil Department of Atmospheric Sciences University of Sao PauloSao PauloBrazil

Land cover classification is one of the main components of the modern weather research and forecasting models, which can influence the meteorological variable, and in turn the concentration of air pollutants. In this study the impact of using two traditional land use classifications, the United States Geological Survey (USGS) and the Moderate-resolution Imaging Spectroradiometer (MODIS), were evaluated. The Weather Research and Forecasting model (WRF, version 3.2.1) was run for the period 18 - 22 August, 2014 (dry season) at a grid spacing of 3 km centered on the city of Manaus. The comparison between simulated and ground-based observed data revealed significant differences in the meteorological fields, for instance, the temperature. Compared to USGS, MODIS classification showed better skill in representing observed temperature for urban areas of Manaus, while the two files showed similar results for nearby areas. The analysis of the files suggests that the better quality of the simulations favorable to the MODIS file is straightly related to its better representation of urban class of land use, which is observed to be not adequately represented by USGS.

关键词： Land Use and Land Cover Classification Regional Modeling Studies Urban Air Quality

Estimates and Spatial Distribution of Emissions from Sugar Cane Bagasse Fired Thermal Power Plants in Brazil

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Journal of Geoscience and Environment Protection 2015年第6期3卷 72-76页

作者： Ana Beatriz Kawashima Marcos Vinícius Bueno de Morais Leila Droprinchinski Martins Viviana Urbina sameh adib abou rafee Maurício Nonato Capucim Jorge Alberto Martins Department of Physics Federal University of Technology-ParanaLondrinaBrazil Department of Chemistry Federal University of Technology-ParanaLondrinaBrazil Department of Atmospheric Sciences University of Sao PauloSao PauloBrazil

Sugar cane bagasse is one of the largest fuels used for electricity generation in Brazil and its usage has continuously increased to supply the energy demand. This paper presents emission inventory based on power plants burning sugar cane bagasse. The inventory involves the spatial distribution and the estimated flows for the following major pollutants: nitrogen oxides (NOx), particulate material (PM), carbon dioxide (CO2) and total organic carbon (TOC). A total of 384 power plants were inventoried, representing a generated power of 9.9 GW, about 26% of the energy produced by thermal power plants sector. The plants are concentrated in two main poles: one of them in S?o Paulo State and nearby areas and the other one in coast of Brazilian Northeast. The limits proposed by the AP-42 Regulations of the US Environmental Protection Agency (USEPA) for the emission factors were applied. Additional emission factors identified in the scientific literature were also included in the analysis in order to assess the uncertainties associated to the estimative. The estimated emissions showed values in the range 16.0 - 20.5 Gg?year?1 for NOx, 18.0 - 267.0 Gg?year?1 for MP and 20.5 - 26.7 Tg?year?1 for CO2. The contribution of TOC showed a minor contribution around 10 - 20 Mg?year?1. PM showed to be the most representative pollutant emitted by the thermal plants burning sugar cane bagasse, but with a large range of uncertainty. There is a high level of uncertainty associated to the preparation of cane as well as the use of collectors to control particulate emissions. The adequate control over all stages could reduce the bagasse ash content in 90% or more.

关键词： Atmospheric Emissions Inventory Air Pollution Stationary Sources Sugarcane Bagasse

Antioxidant Properties of Fermented Camel Milk Prepared Using Different Microbial Cultures

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Food and Nutrition Sciences 2022年第11期13卷 861-877页

作者： Nagwa Hussein Ismail abou-Soliman Mahmoud Ibrahim El-Sayed sameh Awad Department of Animal Breeding Animal and Poultry Production Division Desert Research Centre Cairo Egypt Department of Dairy Technology Research Food Technology Research Institute Agricultural Research Center Giza Egypt Department of Dairy Science and Technology Faculty of Agriculture Alexandria University Alexandria Egypt

This study investigated the effect of using different combinations of commercial starter culture and lactobacilli strains on the antioxidant properties of fermented camel milk for 14 days. The bacterial strains included Lb. casei subsp. casei B-1922, Lb. paracasei subsp. paracasei B-4560, Lb. rhamnosus B-442 and Lb. rhamnosus B-1445. The antioxidant activity of fermented milk was estimated using DPPH radical scavenging activity, ferrous ion chelating activity (FCA) and ferric reducing power assays. The total phenolic content (TPC), titratable acidity, proteolysis degree and sensory acceptability of samples were also evaluated. The results showed that all the studied parameters were affected by both the type of starter culture and storage. Samples containing the commercial starter and Lb. rhamnosus B-1445 had the highest DPPH radical scavenging activity and TPC throughout storage. Fermented milks prepared using the commercial starter and Lb. rhamnosus B-442 or Lb. paracasei retained their high FCA and reducing power throughout storage compared to the other samples. Fermented milk containing the commercial starter and Lb. casei showed the lowest antioxidant activity. The DPPH scavenging activity for all fermented milks decreased sharply during storage, while the change in FCA, reducing power and TPC differed among the samples during storage. The highest acidity was observed in the samples containing the commercial starter and Lb. paracasei, while fermented milk prepared using commercial starter and Lb. rhamnosus B-1445 had the lowest acidity. Samples containing the commercial starter and Lb. casei had the greatest proteolysis during the first week of storage, while samples containing the commercial starter and Lb. rhamnosus B-1445 had the highest proteolysis on day 14. Fermented milks with commercial starter and Lb. rhamnosus B-1445 or Lb. paracasei were the most acceptable products, while samples containing the commercial starter and Lb. casei were less acceptable.

关键词： Antioxidant Activity Fermented Camel Milk Lactobacilli

Efficient Hardware Design of a Secure Cancellable Biometric Cryptosystem

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Intelligent Automation & Soft Computing 2023年第4期36卷 929-955页

作者： Lamiaa A.abou Elazm Walid El-Shafai sameh Ibrahim Mohamed G.Egila H.Shawkey Mohamed K.H.Elsaid Naglaa F.Soliman Hussah Nasser AlEisa Fathi E.Abd El-Samie Department of Microelectronics Electronics Research InstituteAlnozhaEgypt Department of Electronics and Electrical Communications Engineering Ain Shams UniversityCairoEgypt Department of Electronics and Electrical Communications Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Security Engineering Laboratory Department of Computer SciencePrince Sultan UniversityRiyadh 11586Saudi Arabia Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadhSaudi Arabia

Biometric security is a growing trend,as it supports the authentication of persons using conﬁdential biometric *** of the transmitted data in multi-media systems are susceptible to attacks,which affect the security of these *** systems provide sufﬁcient protection and privacy for *** recently-introduced cancellable biometric recognition systems have not been investigated in the presence of different types of *** addition,they have not been studied on different and large biometric *** point that deserves consideration is the hardware implementation of cancellable biometric recognition *** paper presents a suggested hybrid cancellable biometric recognition system based on a 3D chaotic *** rationale behind the utilization of the 3D chaotic cryptosystem is to guarantee strong encryption of biometric templates,and hence enhance the security and privacy of *** suggested cryptosystem adds signiﬁcant permutation and diffusion to the encrypted biometric *** introduce some sort of attack analysis in this paper to prove the robustness of the proposed cryptosystem against *** addition,a Field Programmable Gate Array(FPGA)implementation of the pro-posed system is *** obtained results with the proposed cryptosystem are compared with those of the traditional encryption schemes,such as Double Random Phase Encoding(DRPE)to reveal superiority,and hence high recogni-tion performance of the proposed cancellable biometric recognition *** obtained results prove that the proposed cryptosystem enhances the security and leads to better efﬁciency of the cancellable biometric recognition system in the presence of different types of attacks.

关键词： Information security cancellable biometric recognition systems cryptanalysis 3D chaotic map encryption FPGA

Two-stage procedure in the management of selected cases of keratoconus: clear lens extraction with aspherical IOL implantation followed by WFG-PRK

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International Journal of Ophthalmology(English edition) 2018年第11期11卷 1761-1767页

作者： Waleed abou Samra Tharwat Mokbel Mohammed Elwan sameh Saleh Ahmed Elwehidy Mohammed Iqbal Adel Ellayeh Department of Ophthalmology Faculty of Medicine Mansoura University Department of Ophthalmology Faculty of Medicine Sohag University

AIM： To assess the objective and subjective results of a two-stage procedure for management of keratoconus： clear lensectomy with aspherical intraocular lens（IOL） implantation followed by wave front-guided photorefractive keratotomy（WFG-PRK）.METHODS： This prospective interventional non-randomized study included patients aged 35 years old or more with grade I and II stable keratoconus, a clear visual axis, minimal corneal thickness（MCT） 420 μm or more and average keratometric reading（K） less than 54 diopter（D）. Refraction of all selected eyes should be-8.00 D sphere or more with less than-6.00 D cylinder and could be corrected two lines or more with spectacles or contact lenses. All studied eyes underwent a two-stage approach treatment： first refractive lens exchange and aspherical IOL implantation followed, after at least 3 mo, by WFGPRK. Pre and postoperative complete ophthalmological examination were performed. Topographical, visual and aberrometric results were recorded and evaluated during 6 mo follow up period. Moreover, patient satisfaction and other subjective outcomes were also ***： The 13 eyes of 11 patients diagnosed with stable keratoconus and aged from 39 to 49 y（42.4±6.2 y） were enrolled in the study. At baseline, 8 eyes had grade I and 5 eyes had grade II keratoconus. The manifest sphere was-10.3±4.2 D（ranged from-8.0 to-14.0 D） and the manifest cylinder was-4.2±1.2 D（ranged from-1.75 to-5.50 D）. After the two-stage procedure, sphere and cylinder reduced significantly to-0.43±0.22 D and-1.3±0.72 D respectively（P〈0.001）. There was also a highly significant improvement in the mean uncorrected distance visual acuity（UDVA） from logMAR 1.41±0.49 preoperatively to 0.51±0.16 postoperatively（P〈0.001） and the mean corrected distance visual acuity（CDVA） from 0.76±0.24 preoperatively to 0.49±0.13 after the operation（P〈0.001）. All aberrometric and mesopic vision parameters and most of the topographical indices demonstrated highly significant improveme

关键词： keratoconus clear lensectomy wave front guided photorefractive keratotomy

Challenges of COVID-19 prevention and control: A narrative review

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Journal of Acute Disease 2022年第4期11卷 127-132页

作者： Abdel-Hady El-Gilany Eman sameh Hala Sabou-ElWafa Public Health&Preventive Medicine Mansoura UniversityEgypt Public Health&Preventive Medicine Minia UniversityEgypt Industrial Medicine and Occupational Health Mansoura UniversityEgypt

This narrative review aims to highlight some of the factors contributing to challenges faced by many countries in controlling the spread of COVID-19 pandemic that continues to rage around the world,especially after stoppage of official prevention and control activities.A literature search was conducted on PubMed,and Google using search terms“COVID-19”,“challenges”,“prevention”,and“control”in different ***-19 prevention and control challenges are related to health-system,vaccines,administration,and society *** the spread of COVID-19 necessitates cooperation between community leaders,healthcare professionals,religious leaders,and the public.

关键词： COVID19 Challenges Prevention Control Vaccine Health system Administration Social Culture

Functional and anatomical evaluation of the effect of nepafenac in prevention of macular edema after phacoemulsification in diabetic patients

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International Journal of Ophthalmology(English edition) 2019年第3期12卷 387-392页

作者： Tharwat Mokbel sameh Saleh Mona Abdelkader Sherief E.El-khouly Waleed abou Samra Mohamed Mamdouh Mansoura Ophthlmic Center Faculty of Medicine Mansoura University

AIM: To evaluate the effect of prophylactic administration of nepafenac in prevention of macular edema occurring in diabetic patients after phacoemulsification and to investigate the correlation between optical coherence tomography(OCT) foveal thickness and multifocal electroretinogram(MF-ERG) ***: The study included two groups. Group 1 included 50 diabetic patients with senile cataract(50 eyes, 30 females, 20 males, aged 55±7 y) received nepafenac 0.1% eye drop. Group 2 included another 50 diabetic patients with senile cataract(50 eyes, 22 female, 28 males, aged 53.8±8 y) did not receive nepafenac. All patients were followed up for 3 mo postoperatively. OCT and MF-ERG were done preoperative and at 1 wk, 1, 2 and 3 ***: The mean foveal thickness was statistically significantly lower in Group 1. Five eyes in Group 2 developed clinical cystoid macular oedema(CMO)(10%), and no patients in Group 1 developed central macular thickening more than 50 μm. There were insignificant differences in MF-ERG amplitudes and latencies between the two groups except in the five eyes that developed CMO, there statistically significant reduction of MF-ERG amplitude with increase in foveal thickness. CONCLUSION: Perioperative nepafenac reduces the incidence of CMO following uncomplicated phacoemulsification significantly. Nepafenac has no side effects.

关键词： nepafenac macular edema cataract surgery diabetes optical coherence tomography multifocal electroretinogram

Does the scleral encircling band provide a protective effect against the progression of diabetic retinopathy?

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International Journal of Ophthalmology(English edition) 2019年第9期12卷 1408-1414页

作者： Hossam Youssef abouelkheir Amani E Badawi Amr M.Abdelkader Amr El-Kanishy sameh Saleh Waleed Ali abou Samra Manal Ali Kasem Tharwat Mokbel Mansoura Ophthalmic Center Faculty of Medicine Mansoura University

AIM: To evaluate the effect of scleral encircling bands on the development and progression of diabetic retinopathy(DR) in diabetic ***: The medical records of diabetic patients who underwent unilateral retinal detachment(RD) surgery using scleral buckle and encircling band were reviewed retrospectively. Both eyes of patients were included in the study: one eye in each patient had a scleral buckle with encircling band(the operated eye) and the other one is the non-operated eye. The demographic characters, duration of diabetes and period between surgery and the last recall visit were retrieved from each patient. All the cases underwent fundus photo and fluorescein angiography(when indicated) to confirm the DR ***: Totally 25 patients fulfilled the inclusion and the exclusion criteria were become eligible for the study. A total of 50 eyes of 25 patients were enrolled in this analysis. The mean period of time passed from surgery with encircling band and the last reassessment visit was 12.5±2 y. Even though DR could develop in the operated eyes, it was at a less degree of severity compared to the non-operated eyes of same patients(P=0.027).CONCLUSION: Scleral encircling bands have protective effects against the development and progression of DR.

关键词： diabetic retinopathy scleral encircling bands retinal detachment

Detecting Oil Spill Contamination Using Airborne Hyperspectral Data in the River Nile, Egypt

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Open Journal of Marine Science 2014年第2期4卷 140-150页

作者： Islam abou El-Magd sameh El Kafrawy Islam Farag National Authority for Remote Sensing and Space Sciences (NARSS) Cairo Egypt

Egypt is a highly populated country of about 85 million inhabitants that are concentrated on the Nile Delta and on the flood plain of the Nile River. More than 90% of this population relies on the Nile River in their water demand for domestic use. Currently, Egypt is facing a problem with the trans-boundary water budget coming from the Nile basin. This urges for managing the water quantity and quality to secure the water needs. This paper discusses the potential use of airborne hyperspectral data for water quality management in the form of detecting the oil contamination in the Nile River in integration with in-situ measurements including ASD spectroradiometer and eco-sounder multi-probe devices. The eco-sounder multi-probe device measured most of the water quality parameters and detected the existence of oil contamination at 1200 bb downstream of the study area. The airborne hyperspectral images were analyzed and calibrated with the spectral library determined from the in-situ spectroradiometer to map the patches of the oil contamination. The details of the findings and learning lessons are fully discussed in the paper.

关键词： Oil Slicks Remote Sensing Hyperspectral Data Image Processing River Nile

Improving the Antioxidant Properties of Fermented Camel Milk Using Some Strains of <i>Lactobacillus</i>

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Food and Nutrition Sciences 2021年第4期12卷 352-371页

作者： Mahmoud Ibrahim El-Sayed sameh Awad Nagwa Hussein Ismail abou-Soliman Department of Dairy Technology Research Food Technology Research Institute ARC Giza Egypt Dairy Microorganisms and Cheese Research Laboratory (DMCR) Department of Dairy Science and Technology Faculty of Agriculture Alexandria University Alexandria Egypt Animal Breeding Department Animal and Poultry Production Division Desert Research Centre Matariya Cairo Egypt

This study aimed at improving the antioxidant capacity of fermented camel milk using some single strains of Lactobacillus (Lb. helveticus B-734, Lb. casei subsp. casei B-1922, Lb. paracasei subsp. paracasei B-4560, Lb... 详细信息

关键词： Camel Milk Fermented Milk Antioxidant Activity Lactobacillus