检索结果-南通市图书馆

A New Generative Mathematical Model for Coverless Steganography System Based on Image Generation

Computers, Materials & Continua 2023年第3期74卷 5087-5103页

作者： Al-Hussien Seddik Mohammed salah Gamal Behery Ahmed el-harby Ahmed Ismail Ebada Sokea Teng Yunyoung Nam Mohamed Abouhawwash Department of Computer Science Faculty of ScienceMinia UniversityMiniaEgypt Department of Computer Science Faculty of Computers and Artificial IntelligenceDamietta UniversityNew DamiettaEgypt Department of ICT Convergence Soonchunhyang UniversityAsan31538Korea Department of Mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt Department of Computational Mathematics Scienceand Engineering(CMSE)Michigan State UniversityEast Lansing48824MIUSA

The ability of any steganography system to correctly retrieve the secret message is the primary criterion for measuring its ***,researchers have tried to generate a new natural image driven from only the secret message bits rather than using a cover to embed the secret message within it;this is called the stego *** paper proposes a new secured coverless steganography system using a generative mathematical model based on semi Quick Response(QR)code and maze game image *** system consists of two *** first component contains two processes,encryption process,and hiding *** encryption process encrypts secret message bits in the form of a semi-QR code image whereas the hiding process conceals the pregenerated semi-QR code in the generated maze game *** the other hand,the second component contains two processes,extraction and decryption,which are responsible for extracting the semi-QR code from the maze game image and then retrieving the original secret message from the extracted semi-QR code image,*** results were obtained using the bit error rate(BER)*** results confirmed that the system achieved high hiding capacity,good performance,and a high level of robustness against attackers compared with other coverless steganography methods.

关键词： Coverless steganography data hiding information security QR code maze game

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Circulating microRNA 9-3p and serum endocan as potential biomarkers for hepatitis C virus-related hepatocellular carcinoma

引用

World Journal of Hepatology 2021年第11期13卷 1753-1765页

作者： Amany Mohamed salah eldin Wahb Mohamed el Kassas Ahmed Kamal Khamis Mostafa elhelbawy Nesreen elhelbawy Mona salah eldin Habieb Department of Medical Biochemistry and Molecular Biology Faculty of MedicineHelwan UniversityCairo 11795Egypt Department of Endemic Medicine Faculty of MedicineHelwan UniversityCairo 11795Egypt Department of Hepatology and Gastroenterology National Liver InstituteMenoufia UniversityShebin Elkom 32512MenoufiaEgypt Department of Medical Biochemistry and Molecular Biology Faculty of MedicineMenoufia UniversityShebin Elkoum 3511Egypt

BACKGROUND The high mortality rate of hepatocellular carcinoma(HCC)in Egypt is due mainly to the increasing prevalence of hepatitis C virus infection(HCV)and late diagnosis of the ***(miRNA),which regulate tumor proliferation and metastasis in HCC,may serve as a useful diagnostic approach for the early detection of HCC,thus decreasing its ***,endocan is a protein with angiogenic and inflammatory properties that are associated with tumor progression and poor *** To analyze the levels of miRNA 9-3p and endocan in HCV-infected HCC patients and correlate them with clinicopathological *** We compared levels of endocan and circulating miRNA 9-3p from 35 HCVrelated HCC patients to 33 patients with HCV-induced chronic liver disease and 32 age and gender matched healthy controls recruited from inpatient and outpatient clinics of the National Liver Institute,Menoufia University,Egypt in the period from January to March 2021 in a case-control *** samples from all groups were analyzed for *** was measured by enzymelinked immunosorbent assays,and the expression levels of circulating miRNA 9-3p were measured by real-time quantitative reverse transcriptase *** The levels of circulating miRNA 9-3p were significantly lower in the HCC group compared to the chronic liver disease(Pels in the chronic liver disease were significantly lower than those in the control group(Pels of serum endocan were significantly higher in the HCC group compared to the chronic liver disease(Pels of miRNA 9-3p were significantly inversely correlated to vascular invasion(P=0.002),stage of advancement of Barcelona Clinical Liver Cancer(P<0.001)and the metastatic site(P<0.001)of the HCC ***

关键词： MicroRNA 9-3p Hepatocellular carcinoma Endocan Diagnostic Biomarker Egypt

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Development of new lateral-flow immunochromatographic strip using colloidal gold and mesoporous silica nanoparticles for rapid diagnosis of active schistosomiasis

引用

Asian Pacific Journal of Tropical Biomedicine 2019年第8期9卷 315-322页

作者： Manal Kamel Faten salah Zeinab Demerdash Sara Maher Shimaa Atta Abeer Badr Ahmed Afifi Hanan el Baz Immunology Department Theodor Bilharz Research InstituteKornish El Nil streetGizaEgypt Zoology Department Faculty of ScienceCairo University12613GizaEgypt

Objective: To develop a new sandwich based lateral flow immunochromatographic strip for rapid detection of circulating Schistosoma mansoni antigen in serum and urine samples of patients with active schistosomiasis. Methods: This lateral flow immunochromatographic strip was prepared by using anti-Schistosoma mansoni soluble egg antigen monoclonal antibody conjugated gold nanoparticles (MAb-AuNPs) as antigen-detecting antibody, while crystalline material (MCM)-41-MAb bioconjugate was immobilized at the test line as antigen-capturing antibody. Both antigen capturing and detecting antibodies formed sandwich complexes with circulating Schistosoma mansoni antigen in the positive samples. Sandwich complexes immobilized at the test line gave distinct red color. The assay reliability was examined by using urine and serum samples of 60 Schistosoma mansoni infected patients, 20 patients infected with parasites other than Schistosoma, and 20 healthy individuals as negative controls. Results were compared with those obtained via sandwich enzyme linked immunosorbent assay (elISA). Results: The detection limit of circulating Schistosoma mansoni antigen by lateral flow immunochromatographic strip was lower (3 ng/mL) than the detection limit by elISA (30 ng/mL). The sensitivity and specificity of lateral flow immunochromatographic strip in urine samples were 98.3% and 97.5%, respectively compared to 93.5% and 90.0% by elISA. In serum samples, they were 100.0% and 97.5%, respectively compared to 97.0% and 95.0% by elISA. The strip test took approximately 10 min to complete. Conclusions: This new lateral flow immunochromatographic strip offers a sensitive, rapid, and field applicable technique for diagnosis of active schistosomiasis.

关键词： Schistosomiasis Nanoparticles Immunochromatographic Monoclonal antibodies

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The effect of diet supplemented with vegetable oils and/or monensin on the vaccenic acid production in continuous culture fermenters

引用

Animal Nutrition 2015年第4期1卷 320-323页

作者： Mostafa Sayed A.Khattab Abd-elrahman Abd-el-Gawad salah Hasan Abo Abo el-Nor Mohamed el-Sherbiny Department of Dairy Sciences National Research Centre Department of Animal Production Faculty of Agriculture Cairo University

Studies have shown that supplementing ruminant diets with vegetable oils modulated the rumen biohydrogenation and increased polyunsaturated fatty acid in their products. These positive values are often accompanied by a marginal loss of supplemented unsaturated fatty acids and rise in the concentrations of saturated fatty acids. This study were carried out mainly to investigate the effect of supplementing diets with sunflower oil, olive oil with or without monensin on the production and accumulation of vaccenic acid(VA) in continuous culture fermenters as a long term in vitro rumen simulation *** dual-flow continuous culture fermenters were used in an 8 replication experiment lasted 10 days each(first 7 days for adaptation and last 3 days for samples collection). Supplementing diets with plant oils and monensin in the present experiment increased VA and conjugated linoleic acids(P > 0.05) in ruminal cultures. The results suggest that supplementing diets with both olive oil and sunflower oil and monensin increased VA accumulation compared to plant oils supplemented alone without affecting the rumen dry matter and organic matter digestibility.

关键词： Vegetable oils Monensin Vaccenic acid Continuous fermenter Rumen

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rooted Tree Optimization for Wind Turbine Optimum Control Based on Energy Storage System

引用

Computers, Materials & Continua 2023年第2期74卷 3977-3996页

作者： Billel Meghni Afaf Benamor Oussama Hachana Ahmad Taher Azar Amira Boulmaiz salah Saad el-Sayed M.el-kenawy Nashwa Ahmad Kamal Suliman Mohamed Fati Naglaa K.Bahgaat Department of electrical Engineering Badji Mokhtar UniversityLSEM LaboratoryAnnaba23000Algeria Department of electrical Engineering Biskra UniversityLGEB LaboratoryBiskra07000Algeria Department of Drilling and Rig Mechanics Ksadi Merbah UniversityOuargla30000Algeria College of Computer and Information Sciences Prince Sultan UniversityRiyadh11586Saudi Arabia Faculty of Computers and Artificial Intelligence Benha UniversityBenha13518Egypt Department of electronics University of Badji MokhtarLERICA LaboratoryAnnaba23000Algeria Delta Higher Institute for Engineering&Technology(DHIET) Mansoura35511Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt Faculty of Engineering Cairo UniversityGiza12613Egypt Department of Communications and electronics Engineering Faculty of EngineeringCanadian International College(CIC)ElShiekh ZayedEgypt

The integration of wind turbines(WTs)in variable speed drive systems belongs to the main factors causing lowstability in electrical ***,in order to avoid this issue,WTs hybridization with a storage system is a *** paper investigates WT system operating at variable *** system contains of a permanent magnet synchronous generator(PMSG)supported by a battery storage system(BSS).To enhance the quality of active and reactive power injected into the network,direct power control(DPC)scheme utilizing space-vector modulation(SVM)technique based on proportional-integral(PI)control is ***,to improve the rendition of this method(DPC-SVM-PI),the rooted tree optimization technique(RTO)algorithm-based controller parameter identification is used to achieve PI optimal *** compare the performance ofRTO-based controllers,they were implemented and tested along with some other popular controllers under different working *** obtained results have shown the supremacy of the suggested PIRTO algorithm compared to competing controllers regarding total harmonic distortion(THD),overshoot percentage,settling time,rise time,average active power value,overall efficiency,and active power steadystate error.

关键词： Rooted tree optimization(RTO)method direct power control(DPC) wind turbine(WT) proportional integral(PI) PMSG

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Contribution to the Ground Water Hydrology of the Quaternary Aquifer in West Ismailia Area, Egypt

引用

Journal of Geoscience and Environment Protection 2018年第7期6卷 134-158页

作者： salah Abdelwahab el-Sayed Siting and Environmental Department Egyptian Nuclear and Radiological Regulatory Authority ENRRA Cairo Egypt

Hydrologic conditions of the ground water of the Quaternary aquifer in west Ismailia area, Egypt, were characterized based on new hydrologic data collected in 2017. The Quaternary aquifer consists of alluvial deposits. The grain size distribution results indicate that the major part of the aquifer deposits is formed of medium to coarse grained sand with medium uniformity coefficients ranging between 2.5 and 10. They also reflect the heterogeneity, anisotropy and high productivity of the aquifer. The estimated aquifer parameters range from 29% to 41% for total porosity, from 18.71 m/day to 63.95 m/day for horizontal hydraulic conductivity, from 8.94 m/day to 61.6 m/day for vertical hydraulic conductivity, from 1.01 to 4.27 for anisotropy and from 1870 m2/day to 6549 m2/day for transmissivity. The ground water flows mainly from the north and northeast recharge sources (Ismailia and el Manaief canals) and from the south recharge area (Miocene aquifer), with an average hydraulic gradient of 0.00438. The recharge rate to the aquifer (from the southern area) and the Darcy’s velocity of ground water are estimated to be 447 × 106 m3/year and 0.203 m/day (on average), respectively. A great change in the hydrologic setting of the aquifer is occurred during the period of 1992-2017, where the groundwater flow has changed during that period. The aquifer contains fresh to saline water. An oxidizing (alkaline) environment is reported for the aquifer, as revealed from the relationship between the redox potential (185 - 836 mV) and pH (5.2 - 7.5 standard units). This indicated the capability of ground water to dissolve heavy metals associated to rock-forming minerals. A wide variation in the concentrations of total dissolved solids (320 - 7385 mg/l) and dissolved oxygen (2.13 - 8.4 mg/l) in the Quaternary aquifer is observed, reflecting the local variation of the environmental and geologic conditions and indicating the influence of different recharge sources.

关键词： Ground Water Flow and Recharge Hydraulic Parameters Aqueous Environment Quaternary Aquifer West Ismailia Area Egypt

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Study of Groundwater in Northeast Cairo Area, Egypt

引用

Journal of Geoscience and Environment Protection 2018年第4期6卷 229-251页

作者： salah Abdelwahab el-Sayed Siting and Environmental Department Nuclear and Radiological Regulatory Authority Cairo Egypt

This paper presents a comprehensive hydrogeologic view of the Quaternary aquifer in north eastern Cairo area, Egypt. The hydrogeologic, hydrochemical and isotopic features of the aquifer are determined to assess the groundwater geochemistry and quality for different uses. The groundwater in the aquifer is shallow and flows towards the heavily pumping areas (cultivated and industrial areas). The concentrations of total dissolved solids (TDS) vary considerably in the aquifer, ranging from 225.6 mg/L to 1219 mg/L. Wide variations in the concentrations of major ions, trace elements, nitrate, δ18O and δ2H are detected, indicating the variation in the geologic and recharge conditions. This further indicates the effect of natural processes (weathering, dissolution and ion exchange) as well as anthropogenic activities on the quality of groundwater. Moderate levels of contamination with nitrate, aluminum and manganese are recorded in the groundwater below the cultivated area. The contamination is linked to the extensive use of fertilizers for agriculture and the leakage of wastewater from improper sewage system. The computed nitrate pollution index reveals that about 69.69% of groundwater is safe for drinking, while the rest of groundwater is unsuitable. The calculated water quality index indicates that about 78.79% of groundwater is safe for human consumption and the rest of groundwater is poor for consumption because of the contamination with the high levels of manganese, total hardness, pH, sulphate, aluminum, and nitrate. The contaminated groundwater needs to be treated before consumption. Hence, periodic groundwater quality checks are recommended.

关键词： Northeast Cairo Groundwater Geochemistry Isotopes Pollution Water Quality Assessment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design of adaptive intuitionistic fuzzy controller for synchronisation of uncertain chaotic systems

引用

CAAI Transactions on Intelligence Technology 2020年第4期5卷 237-246页

作者： Mohamed Hamdy salah Helmy Mohamed Magdy Department of Industrial electronics and Control Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf-32952Egypt Department of Mechatronics Engineering Higher Institute of Engineering and TechnologyEl-Mahalla El-Kobra-31951Egypt

This study presents the synchronisation between two non-linear Lorenz chaotic systems using an adaptive intuitionistic fuzzy controller(AIFC).This problem is solved in the presence of external disturbances and *** classes of Lorenz systems have been formulated one as the master and the other as the *** master and slave systems have different initial *** different initial conditions,both systems *** is called the butterfly effect that rules the behaviour of chaotic *** is chosen as a different method that has not been used before to synchronise the chaotic *** scaling factors of the inputs and the output of the intuitionistic fuzzy controller(IFC)are tuned using the artificial bee colony(ABC)algorithm depending on a specified objective *** IFC stability is studied when it is applied to synchronise the Lorenz *** simulation results achieved to assess the adequacy of the proposed control and to exhibit its dependability to synchronise the Lorenz system.

关键词： function. chaotic specified

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Trends and outcomes of pancreaticoduodenectomy for periampullary tumors: A 25-year single-center study of 1000 consecutive cases

引用

World Journal of Gastroenterology 2017年第38期23卷 7025-7036页

作者： ayman el nakeeb waleed askar ehab atef ehab el hanafy ahmad m sultan tarek salah ahmed shehta mohamed el sorogy emad hamdy mohamed el hemly ahmed a el-geidi tharwat kandil mohamed el shobari talaat abd allah amgad fouad mostafa abu zeid ahmed abu el eneen nabil gad el-hak gamal el ebidy omar fathy ahmed sultan mohamed abdel wahab gastroenterology surgical center mansoura university

AIM To evaluate the evolution, trends in surgical approaches a n d r e c o n s t r u c t i o n t e c h n i q u e s, a n d i m p o r t a n t lessons learned from performing 1000 consecutive pancreaticoduodenectomies(PDs) for periampullary *** This is a retrospective review of the data of all patients who underwent PD for periampullary tumor during the period from January 1993 to April 2017. The data were categorized into three periods, including early period(1993-2002), middle period(2003-2012), and late period(2013-2017).RESULTS The frequency showed PD was increasingly performed after the year 2000. With time, elderly, cirrhotic and obese patients, as well as patients with uncinate process carcinoma and borderline tumor were increasingly selected for PD. The median operative time and postoperative hospital stay decreased significantly over the periods. Hospital mortality declined significantly, from 6.6% to 3.1%. Postoperative complications significantly decreased, from 40% to 27.9%. There was significant decrease in postoperative pancreatic fistula in the second 10 years, from 15% to 12.7%. There was a significant improvement in median survival and overall survival among the *** Surgical results of PD significantly improved, with mortality rate nearly reaching 3%. Pancreatic reconstruction following PD is still debatable. The survival rate was also improved but the rate of recurrence is still high, at 36.9%.

关键词： Pancreaticoduodenectomy Pancreaticogastrostomy Pancreaticojejunostomy Postoperative pancreatic fistula Periampullary tumor

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Upper crustal Poisson's ratio and coda-wave attenuation beneath Eastern Anatolia

引用

Earthquake Engineering and Engineering Vibration 2020年第2期19卷 335-347页

作者： Ufuk Aydin Sakir Sahin Mohamed K.salah Atatürk University Oltu Faculty of Earth SciencesMining EngineeringErzurumTurkey Geophysical Engineering Department SDUEngineering and Architecture FacultyIspartaTurkey Department of Geology American University of BeirutRiad El Solh 11072020BeirutLebanon

The attenuation of seismic waves reflects the elastic nature of the media within which the waves *** this study,we calculate the Coda-Q(Qc),frequency dependence(η),Vp/Vs and Poisson's(υ)ratios by using 2621 vertical component seismograms generated by 987 earthquakes recorded by 13 seismic stations in Eastern Anatolia,and creat a 2-D seismic tomographic Qc model for the *** obtained model provides significant information for exploring the boundaries of adjacent tectonic units within the upper crust and interpreting their dynamic *** 2-D Qc model and the other parameters are consistent with the seismotectonic features of Eastern *** heterogeneous Qc values are observed in the study area dividing it into north-south directed bands of low and high *** highestηvalues were obtained beneath the northwestern and eastern parts of the study ***,high and lowυvalues are obtained in the western and eastern parts of the study area,*** spatial variations in the measured parameters are consistent with many geophysical observations including low Pn velocities,efficient Sn blockage,high heat flow,and widespread *** upper crustal thicknesses and inhomogeneous stress distribution along the East and North Anatolian Fault Zones may also contribute to the observed heterogeneities.

关键词： Coda-Q(Qc) Eastern Anatolia Poisson's ratio(υ) seismotectonics upper crustal structure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：