检索结果-南通市图书馆

Optimized Deep Learning Approach for Efficient Diabetic Retinopathy Classification Combining VGG16-CNN

Computers, Materials & Continua 2023年第11期77卷 1855-1872页

作者： Heba M.El-Hoseny Heba F.Elsepae wael a.mohamed Ayman S.Selmy Department of Computer Science the Higher Future Institute for Specialized Technological StudiesObour11828Egypt Department of Electrical Engineering Benha Faculty of EngineeringBenha UniversityBenha13511Egypt

Diabetic retinopathy is a critical eye condition that,if not treated,can lead to vision *** methods of diagnosing and treating the disease are time-consuming and ***,machine learning and deep transfer learning(DTL)techniques have shown promise in medical applications,including detecting,classifying,and segmenting diabetic *** advanced techniques offer higher accuracy and *** Diagnosis(CAD)is crucial in speeding up classification and providing accurate disease ***,these technological advancements hold great potential for improving the management of diabetic *** study’s objective was to differentiate between different classes of diabetes and verify the model’s capability to distinguish between these *** robustness of the model was evaluated using other metrics such as accuracy(ACC),precision(PRE),recall(REC),and area under the curve(AUC).In this particular study,the researchers utilized data cleansing techniques,transfer learning(TL),and convolutional neural network(CNN)methods to effectively identify and categorize the various diseases associated with diabetic retinopathy(DR).They employed the VGG-16CNN model,incorporating intelligent parameters that enhanced its *** outcomes surpassed the results obtained by the auto enhancement(AE)filter,which had an ACC of over 98%.The manuscript provides visual aids such as graphs,tables,and techniques and frameworks to enhance *** study highlights the significance of optimized deep TL in improving the metrics of the classification of the four separate classes of *** manuscript emphasizes the importance of using the VGG16CNN classification technique in this context.

关键词： No diabetic retinopathy(NDR) convolution layers(CNV layers) transfer learning data cleansing convolutional neural networks a visual geometry group(VGG16)

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

Endoscopic ultrasound in gastroenterology:From diagnosis to therapeutic implications

引用

World Journal of Gastroenterology 2014年第24期20卷 7801-7807页

作者： mohamed A Mekky wael A Abbas Department of Tropical Medicine and Gastroenterology Assiut University HospitalAssiut 71111Egypt Department of Internal Medicine Gastroenterology DivisionAssiut University HospitalAssiut 71111Egypt

Since its advent in 1980,the scope of endoscopic ultrasound(EUS)has grown to include a wide range of indications,and it is now being incorporated as an integral part of everyday practice in the field of *** use is extending from an adjuvant imaging aid to utilization as a therapeutic tool for various gastrointestinal *** was first used to visualize remote organs,such as the pancreas and abdominal lymph *** fine needle aspiration was introduced,the indications for EUS expanded to include tissue sampling for diagnostic *** the same time,the needle can be used to convey a potential therapy to the internal organs,allowing access to remote *** this review,we aim to highlight the expanding spectrum of EUS indications and uses in the field of gastroenterology.

关键词： Endoscopic ultrasound Endoscopic ultrasound-guided fine needle aspiration Ablation Injection Drainage Immunohistochemistry Gastroenterology

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

Convenient One Pot Synthesis and Antibacterial Evaluation of Some New Mannich Bases Carrying 1,2,4-Triazolyl Moiety

引用

Chinese Journal of Chemistry 2011年第8期29卷 1661-1668页

作者： Arafa, wael A. a.mohamed, Asmaa S Department of Chemistry Faculty of Science Fayoum University Fayoum Egypt Department of Medical Chemistry Theodor Bilharz Research Institute Egypt

A series of Mannich bases were synthesized by a three-component Mannich reaction. The newly synthesized compounds were well characterized by elemental analyses, IR, NMR and mass spectroscopic studies. The potential antibacterial effects of the synthesized compounds were investigated using standard bacterial strains： Gram-positive and Gram-negative bacteria. Interestingly, all the synthesized compounds were observed to be promising leads, possessing moderate to significant inhibitory activity as compared to standard.

关键词： bi- 1,2,4-triazoles Schiff bases Mannich bases regioselectivity antibacterial activity

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

Standard precaution measurements during ophthalmology practice in the pandemic stage of COVID-19

引用

International Journal of Ophthalmology(English edition) 2020年第7期13卷 1017-1022页

作者： Ahmed mohamed Reda wael M.Ahmed Department of ophthalmology Faculty of MedicineAin Sham UniversityCairo 11566Egypt Dar Eloyoun Eye Laser Centers Muscat 118Oman

AIM:To take specific precautions and keep a safe practice during providing ophthalmology health services without compromising the patient’s safety as well as the team workers and the community in the pandemic stage of corona virus disease 2019(COVID-19).METHODS:Applying patient circulation scheme implemented in our ophthalmology centers with the guidance of ministry of health infection control guidelines star ted from the moment that we receive a call or Whats App message or Facebook inquiry from patients until 21 d after patients first visit if *** directions were ***,community awareness of the disease and the ophthalmology related advices in how eye can transfers the infection and how to protect our eyes not to be infected through videos interviews of our consultants and distribution in social media like Instagram,Facebook,Whats App pages radio and TV interviews as well as leaflet health awareness for distribution for ***,scheduling of patients’appointments to prevent overcrowdings and cross ***,protective measurements tools in the center to detect and prevent any exposure of the patients to patients and to protect medical staff,COVID-19 scoring system was set up to identify patients with fever,respiratory symptoms,acute conjunctivitis or recent travel to outbreak areas and to encourage these individuals to postpone their appointments for at least 21 *** use of personal protective equipment was *** all the elective surgeries keeping only the emergency types advised by fourth:how to deal with our patients if they need an urgent ophthalmological intervention and how to deal with suspected cases of corona if any cases ***:Our measures helped our colleagues to try to keep providing ophthalmology health services without increasing the incidence of infection for COVID-19 until this pandemic is ***:In our practice,ophthalmologists should work with new aura of social media to facilitate the

关键词： corona virus COVID-19 Instagram Facebook WhatsApp personal protective equipment

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

An E-Business Event Stream Mechanism for Improving User Tracing Processes

引用

Computers, Materials & Continua 2021年第10期69卷 767-784页

作者： Ayman mohamed Mostafa Saleh N.Almuayqil wael Said College of Computers and Information Sciences Jouf UniversitySakaka72314Saudi Arabia Faculty of Computers and Informatics Zagazig UniversityZagazig44519Egypt College of Computer Science and Engineering Taibah UniversityMedina42353Saudi Arabia

With the rapid development in business transactions,especially in recent years,it has become necessary to develop different mechanisms to trace business user records in web server log in an efficient *** business transactions have increased,especially when the user or customer cannot obtain the required *** example,with the spread of the epidemic Coronavirus(COVID-19)throughout the world,there is a dire need to rely more on online business *** order to improve the efficiency and performance of E-business structure,a web server log must be well utilized to have the ability to trace and record infinite user *** paper proposes an event stream mechanism based on formula patterns to enhance business processes and record all user activities in a structured log *** user activity is recorded with a set of tracing parameters that can predict the behavior of the user in business *** experimental results are conducted by applying clustering-based classification algorithms on two different datasets;namely,Online Shoppers Purchasing Intention and Instacart Market Basket *** clustering process is used to group related objects into the same cluster,then the classification process measures the predicted classes of clustered *** experimental results record provable accuracy in predicting user preferences on both datasets.

关键词： Business transactions event stream log file tracing parameters clustering-based classification

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

A Multi-Factor Authentication-Based Framework for Identity Management in Cloud Applications

引用

Computers, Materials & Continua 2022年第5期71卷 3193-3209页

作者： wael Said Elsayed Mostafa M.M.Hassan Ayman mohamed Mostafa Faculty of Computers and Informatics Zagazig UniversityZagazig44519Egypt College of Computer and Information Sciences Jouf UniversitySakaka72314Saudi Arabia

User’s data is considered as a vital asset of several *** data to the cloud computing is not an easy decision for any organization due to the privacy and security *** providers must ensure that both data and applications that will be stored on the cloud should be protected in a secure *** data stored on the public cloud will be vulnerable to outside and inside *** paper provides interactive multi-layer authentication frameworks for securing user identities on the *** access control policies are applied for verifying users on the cloud.A security mechanism is applied to the cloud application that includes user registration,granting user privileges,and generating user authentication *** intrusion detection system is embedded to the security mechanism to detect malicious *** multi factor authentication,intrusion detection,and access control techniques can be used for ensuring the identity of the ***,encryption techniques are used for protecting the data from being *** results are carried out to verify the accuracy and efficiency of the proposed frameworks and *** results recorded high detection rate with low false positive alarms.

关键词： Cloud computing service providers multi-layer authentication frameworks and access control

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

Molecular analysis of Pasteurella multocida strains isolated from fowl cholera infection in backyard chickens

引用

Asian Pacific Journal of Tropical Biomedicine 2014年第1期4卷 8-12页

作者： mohamed-wael Abdelazeem mohamed Moemen Abdel Azeem mohamed Abdel Mageed Department of Microbiology Faculty of Veterinary medicineSouth Valley University Department of Poultry Diseases Faculty of Veterinary MedicineAssiut University

Objective:To characterize Pasteurella isolated from backyard chickens using whole cell protein lysate profiles and random amplified polymorphic DNA(RAPD)techniques to show their genetic relationship because Pasteurclla multocida(***)is an important cause of fatal infections in backyard ***:Twenty one *** isolates were recovered previously from clinical cases of fowl cholera belonging to individual owners and phenotypically analysed using biochemical tests and serotyping were used far the genetic ***:Phylogenetic study based on both methods revealed that the recovered population of *** isolated from backyard chickens differs markedly,constituting a well-separated cluster and appearance of 3 distinguishing lineages with greater discrimination shown by RAPDPCR that resulted in two suclusters in cluster A and three subclusters in cluster B and were related greatly with capsular serogroups for the examined *** whole cell protein revealed the presence of dominant protein bands at approximately 41 and 61 kDa in all of the examined isolates that may be a virulent proteins share in the increasing of its *** distinctive bands ranged from 123 to 1534 ***:Based on the previous findings,there are three spreading clusters that may indicate the association of a small number of *** variants with the majority of cases suggesting that certain clones of *** are able to colonue the examined backyard ***,the ease and rapidity of RAPD-PCR support the use of this technique as alternative to the more labour-intensive SDS-PACE system for strain differentiation and epidemiological studies of avian *** application of RAPD technology to the examination of avian cholera outbreaks in commercially available flocks may facilitate more effective management of this disease by providing the potential to investigate correlations of *** genotypes,to identify aff

关键词： Pasteurella multocida Chickens Variation Molecular characterization

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

Effect of single subconjunctival injection of bevacizumab on primary pterygium:clinical,histopathological and immunohistochemical study

引用

International Journal of Ophthalmology(English edition) 2018年第5期11卷 797-801页

作者： Tarek a.mohamed wael Soliman Ahmed M.Fathalla Abeer El Refaie Department of Ophthalmology Assiut University Hospital Department of Pathology Faculty of MedicineAssiut University

AIM：To evaluate the effect（clinically,histopathologically and immunohistochemically） and safety of a single intrapterygium injection of ***：Prospective interventional study comprised 40 eyes of 40 patients with primary fleshy pterygia who attended the Outpatient Clinic of Department of Ophthalmology,Assiut University Hospitals,Egypt from May 2015 to May *** were randomly classified into 2 groups：the first group received a single intralesional injection of bevacizumab（Avastin;Genentech,San Francisco,CA,USA）;the second group comprised patients who did not receive subconjunctival *** of pterygium and conjunctival auto graft was done in both *** excised pterygium tissues were subjected to histopathological and immunohistochemical ***：The study comprised 40 eyes of 40 patients（33 men,7 women） of age range from 31-58 *** study group included 22 *** control group included 18 eyes.A decrease in the vascularity of the pterygium was noted in all injected *** mean vessel count was higher in non-injected pterygia than that in injected pterygia and the difference was statistically significant（P=0.001）.Also,the mean vessel count in both groups was significantly higher than normal conjunctive（P=0.005 and 0.001）.A statistically significant difference in vascular endothelial growth factor（VEGF） expression between injected and non-injected cases was detected in the epithelial,stromal and endothelial cells（P=0.0001,0.016,0.014）.No serious intraoperative complications occurred in both ***：The use of single intra lesional injection of Avastin in pterygium decreased vascularity and decreased VEGF expression in injected pterygium after one *** study proved the effect of single intra lesional injection of Avastin on *** studies may enable limiting the need for surgery and improve quality of life for patients with pterygia.

关键词： pterygiurn vascularity bevacizumab vessel count

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

Antimicrobial activity of latex silver nanoparticles using Calotropis procera

引用

Asian Pacific Journal of Tropical Biomedicine 2014年第11期4卷 876-883页

作者： Nadia Hussein mohamed Mady Ahmed Ismail wael Moustfa Abdel-Mageed Ahmed Abdelfattah mohamed Shoreit Department of Botany Faculty of ScienceAssiut University Biology Department.Faculty of Science and Art SamtahJazan University Pharmacognosy Department College of PharmacyKing Saud University Pharmacognosy Department Faculty of PharmacyAssiut University

Objective:To synthesize silver nanoparticles(AgNPs) by green methods using scrum latex of Calotropis procera at 80 ℃ and evaluate them against bacteria,dermatophytes and phytopathogenic fungi comparing with the activity of untreated ***:The synthesis of AgNPs was performed by mixing 3%latex scrum extract with the same volume of silver nitrate(2 mmol/L) solution in round flask and heating in water bath at80 ℃.Characterization of silver particles were determined using UV-vis spectrophotometer,transmission electron microscopy(TEM),X-ray diffraction and Fourier transform infrared *** antimicrobial activity of the green synthesized AgNPs was determined against bacteria,dermatophytes and phytopathogenic fungi and compared to the crude untreated latex by agar-well diffusion ***:Biosynthesis of latex silver nanoparticles was successfully obtained by green *** formation of AgNPs has been confirmed by UV-vis,TEM microscopy.X-ray diffraction and Fourier transform infrared *** analysis showed that synthesized AgNPs are highly stable spherical shaped particles,well dispersed with a diameter ranged from 4 nm up to 25 nm and an average size of 12.33 *** showed strong antibacterial activity against Gram-negative bacteria(Escherichia coli,Pseudomonas aeruginosa and Serratia sp.) and antifungal activity against Trichophyton rubrum,Candida albicans and Aspergillus ***:It can be concluded that serum latex of Calotropis pmcera was found to display strong potential for the synthesis of AgNPs as antimicrobial agents through rapid reduction of silver ions(Ag^+ to Ag^0).The green synthesized AgNPs were found to show higher antimicrobial efficacy than crude latex.

关键词： Green synthesis Calotropis procera Latex Silver nanoparticles Antimicrobial activity

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

Novel Synthesis of Some Phthalazinone Derivatives

引用

Chinese Journal of Chemistry 2011年第7期29卷 1446-1450页

作者： Mahmoud, Mahmoud R. Abou-Elmagd, wael S.I. Derbala, Hamed A. Hekal, mohamed H. Chemistry Department Faculty of Science Ain Shams University Abassia 11566 Cairo Egypt

Dimethyl homophthalate condensed with isatin to give the unexpected five membered lactone 3 rather than the half ester 1 and the β-lactone 2. Treatment of compound 3 with excess hydrazine hydrate afforded phthalazinone carbohydrazide 4 which represents a novel method for the synthesis of phthalazinone derivatives. The carhohy- drazide 4 upon treatment with carbon disulphide afforded 1,3,4-oxadiazole derivative 5, which reacted with ethyl- chloroacetate to give the S-alkylated product 6. The structure of compound 3 compared with 2 was discussed using hyperchem professional （7） AM1 calculations, X-ray single crystal structure and complete spectral data.

关键词： phthalazinone carbohydrazide oxadiazole triazolo oxadiazole AMx calculation condensation

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

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：