检索结果-南通市图书馆

Day-of-surgery rejection of donors in living donor liver transplantation

World Journal of Hepatology 2012年第11期4卷 299-304页

作者： Bassem Hegab Mohamed Rabei Abdelfattah Ayman Azzam Hazem Mohamed waleed al Hamoudi Faisal Aba alkhail Hamad al Bahili Hatem Khalaf Mohammed al Sofayan Mohammed al Sebayel Department of Liver Trans-plantation and Hepatobiliary-Pancreatic Surgery King Faisal Specialist Hospital and Research Center Riyadh 11211 Saudi Arabia Department of Hepato-Biliary-Pancreatic Surgery and Liver Transplantation National Liver Institute University of Menoufiya Menoufiya 32714 Egypt Department of Hepato-Biliary and Pancreatic Surgery University of Alexan-dria Alexandria 21131 Egypt

AIM: To study diagnostic laparoscopy as a tool for excluding donors on the day of surgery in living donor liver transplantation (LDLT).METHODS: This study analyzed prospectively collected data from all potential donors for LDLT. all of the donors were subjected to a three-step donor evaluation protocol at our institution. Step one consisted of a clinical and social evaluation, including a liver profile, hepatitis markers, a renal profile, a complete blood count, and an abdominal ultrasound with Doppler. Step two involved tests to exclude liver diseases and to evaluate the donor’s serological status. This step also included a radiological evaluation of the biliary anatomy and liver vascular anatomy using magnetic resonance cholan-giopanc reatography and a computed tomography (CT) angiogram, respectively. A CT volumetric study was used to calculate the volume of the liver parenchyma. Step three included an ultrasound-guided liver biopsy. Between November 2002 and May 2009, sixty-nine potential living donors were assessed by open exploration prior to harvesting the planned part of the liver. Between the end of May 2009 and October 2010, 30 potential living donors were assessed laparoscopically to determine whether to proceed with the abdominal incision to harvest part of the liver for donation. RESULTS: Ninety-nine living donor liver transplants were attempted at our center between November 2002 and October 2010. Twelve of these procedures were aborted on the day of surgery (12.1%) due to donor findings, and eighty-seven were completed (87.9%). These 87 liver transplants were divided into the following groups: Group A, which included 65 transplants that were performed between November 2002 and May 2009, and Group B, which included 22 transplants that were performed between the end of May 2009 and October 2010. The demographic data for the two groups of donors were found to match; moreover, no significant difference was observed between the two groups of donors with res

关键词： Live donor Laparoscopic assessment Re-jected donors Day of surgery Fatty liver

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

Holographic particle localization under multiple scattering

引用

Advanced Photonics 2019年第3期1卷 39-50页

作者： waleed Tahir Ulugbek S.Kamilov Lei Tian Boston University Department of Electrical and Computer EngineeringBostonMassachusettsUnited States Washington University in St.Louis Department of Electrical and Systems EngineeringSt.LouisMissouriUnited States Washington University in St.Louis Department of Computer Science and EngineeringSt.LouisMissouriUnited States

We introduce a computational framework that incorporates multiple scattering for large-scale threedimensional(3-D)particle localization using single-shot in-line *** holographic techniques rely on single-scattering models that become inaccurate under high particle densities and large refractive index *** multiple scattering solvers become computationally prohibitive for large-scale problems,which comprise millions of voxels within the scattering *** approach overcomes the computational bottleneck by slicewise computation of multiple scattering under an efficient recursive *** the forward model,each recursion estimates the next higher-order multiple scattered field among the object *** the inverse model,each order of scattering is recursively estimated by a nonlinear optimization *** nonlinear inverse model is further supplemented by a sparsity promoting procedure that is particularly effective in localizing 3-D distributed *** show that our multiple-scattering model leads to significant improvement in the quality of 3-D localization compared to traditional methods based on single scattering *** experiments demonstrate robust inverse multiple scattering,allowing reconstruction of 100 million voxels from a single 1-megapixel hologram with a sparsity *** performance bound of our approach is quantified in simulation and validated *** work promises utilization of multiple scattering for versatile large-scale applications.

关键词： multiple scattering digital holography particle localization

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

Statistical Analysis of a Class of Secure Relay Assisted Cognitive Radio Networks

引用

China Communications 2018年第12期15卷 174-189页

作者： Mona Shokair waleed Saad Shady M.Ibraheem Electronic and Electrical Comm.Dep. Faculty of Electronic EngineeringMeno.a UniversityEgypt Telecom Egypt Egypt Electrical Engineering Department College of EngineeringShaqra UniversityDawadmiAr RiyadhKingdom of Saudi Arabia

In this paper, the problem of communication security in an underlay wiretap cognitive radio network is addressed and statistically investigated. We rely on a simple dual-hop communication model of decode and forward relay assisted network. Regarding the interference from primary users, interference power and maximum transmit power constraints; this network is subjected to multiple eavesdropping attacks which employ a specific interception strategy. To confound this eavesdropping, proposed selection schemes are exploited that aim at maximizing the minimum of the dual secrecy rates in order to strengthen the physical layer security. Moreover, exact and asymptotic closed form expressions are derived for specific performance metrics over independent and identically distributed Rayleigh fading channels. At high signal to interference noise ratio(SINR), tangential system bounds are also derived and discussed. Monte Carlo simulation results emphasize our assumption. It is found out that at the full diversity of the system, any additional node that enters the cooperative eavesdropping system becomes significantly of no effect.

关键词： relay selection non-colluding or colluding eavesdroppers outage probability secrecy rate power constraints.

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

Vitamin D deficiency: Correlation to interleukin-17, interleukin-23 and PⅢNP in hepatitis C virus genotype 4

引用

World Journal of Gastroenterology 2012年第28期18卷 3738-3744页

作者： Mona F Schaalan waleed A Mohamed Hesham H Amin Department of Biochemistry Faculty of Pharmacy Misr International University Cairo 1 Egypt Department of Chemistry Cairo University Cairo 11562 Egypt Department of Clinical Pathology Faculty of Medicine AL Azhar University Cairo 147 Egypt

AIM: To assess vitamin D (Vit D) abnormalities in hepatitis C infected patients and their relationship with interleukin (IL)-17, IL-23 and N-terminal propeptide of type Ⅲ pro-collagen (PⅢNP) as immune response mediators. METHODS: The study was conducted on 50 Egyptian patients (36 male, 14 female) with hepatitis C virus (HCV) infection, who visited the Hepatology Outpatient Clinic in the Endemic Disease Hospital at Cairo University. Patients were compared with 25 ageand sexmatched healthy individuals. Inclusion criteria were based on a history of liver disease with HCV genotype 4 (HCV-4) infection (as new patients or under followup). Based on ultrasonography, patients were classified into four subgroups; 14 with bright hepatomegaly; 11 with perihepatic fibrosis; 11 with hepatic cirrhosis; and 14 with cirrhosis and hepatocellular carcinoma (HCC).Total Vit D (i.e., 25-OH-Vit D) and active Vit D [i.e., 1,25-(OH) 2 -Vit D] assays were carried out using commercial kits. IL-17, IL-23 and PⅢNP levels were assayed using enzyme linked immunosorbent assay kits, while HCV virus was measured by quantitative and qualitative polymerase chain reaction. RESULTS: Levels of Vit D and its active form were significantly lower in advanced liver disease (hepatic cirrhosis and/or carcinoma) patients, compared to those with bright hepatomegaly and perihepatic fibrosis. IL-17, IL-23 and PⅢNP levels were markedly increased in HCV patients and correlated with the progression of hepatic damage. The decrease in Vit D and active Vit D was concomitant with an increase in viral load, as well as levels of IL-17, IL-23 and PⅢNP among all subgroups of HCV-infected patients, compared to normal healthy controls. A significant negative correlation was evident between active Vit D and each of IL-17, IL-23 and PⅢNP (r = -0.679, -0.801 and -0.920 at P al load was negatively correlated with Vit D an

关键词： Vitamin D Interleukin-17 Interleukin-23 N-terminal propeptide of type Ⅲ pro-collagen Hepatitis genotype 4

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

Vancomycin flushing syndrome in orthopaedic practice:A case report

引用

World Journal of Orthopedics 2023年第10期14卷 771-775页

作者： Fawaz M al-Anii Mir Sadat-ali Khalid waleed al-Tabash Ahmad I alMulhim Sulaiman A alMousa Abdulaziz M alHawas Orthopaedic Surgery Imam AbdulRahman Bin Faisal University and King Fahd Hospital of the UniversityAlKhobar 31952Saudi Arabia

BACKGROUND Vancomycin flushing syndrome(VFS),also known as red man syndrome,is an allergic reaction to *** typically presents as a rash on the face,neck,and upper torso after intravenous administration of *** is blamed on rapid intravenous infusion of vancomycin during management and rarely happens after local use.A review of the literature showed that in the last 23 years,4 such cases have been ***,we add another case of VFS developed after slow local absorption of vancomycin in cement *** SUMMARY A 44-year-old male with a known case of hypertension,no history of allergies to medications,and a history of chronic osteomyelitis of the right tibia with discharging sinus over the anterolateral aspect of the *** pus culture grew Staphylococcus aureus,which was sensitive to clindamycin and *** patient underwent irrigation and debridement with the placement of vancomycin cement beads made from 4 g of vancomycin powder and 40 g of polymethyl *** hours postoperatively,the patient developed a pruritic,erythematous,macular rash predominantly on his face,neck,chest,and lower extremities and to a lesser extent his upper extremities.A diagnosis of VFS was made and was successfully treated with cetirizine(10 mg,oral)and methylprednisolone sodium succinate(125 mg,intravenous).The patient continued to have itching with a facial rash for 12 h with gradual improvement.A decision was made to not remove the beads as the patient continued to ***,the rash disappeared after 96 h with no further *** VFS can occur not only after rapid intravenous injection of vancomycin but also with local release,as in our *** orthopaedic surgeons routinely use vancomycin with polymethyl methacrylate in chronic osteomyelitis and revision arthroplasty,they should be aware of such a complication occurring.

关键词： Vancomycin Anaphylactic reactions Red man syndrome Vancomycin flushing syndrome Case report

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

Assessment of research productivity of Arab countries in the field of infectious diseases using Web of Science database

引用

Infectious Diseases of Poverty 2015年第1期4卷 9-16页

作者： waleed M Sweileh Samah W al-Jabi alaeddin Abuzanat Ansam F Sawalha Adham S AbuTaha Mustafa A Ghanim Sa’ed H Zyoud Department of Pharmacology and Toxicology College of Medicine and Health SciencesAn-Najah National UniversityNablusPalestine Department of Clinical and Community Pharmacy College of Medicine and Health SciencesAn-Najah National UniversityNablusPalestine Department of Microbiology and Immunology College of Medicine and Health SciencesAn-Najah National UniversityNablusPalestine Department of Biochemistry and Genetics College of Medicine and Health SciencesAn-Najah National UniversityNablusPalestine

Background:To meet the future challenges of infectious diseases and limit the spread of multidrug resistant microorganisms,a better understanding of published studies in the field of infectious diseases is *** objective of this study was to analyze the quantity and quality of research activity in the field of infectious diseases in Arab countries and compare it with that in non-Arab ***:Documents published in Arab countries within the research category of“infectious diseases”were extracted and analyzed using the Web of Science *** data analyzed represent research productivity during the time interval between 1900–***:Worldwide,the total number of documents published in the field of infectious diseases up to 2012 was 227,188.A total of 2,408 documents in the field of infectious diseases were published in Arab countries,which represents 1.06%of worldwide research *** output from Arab countries in the field of infectious diseases was low for ***,approximately a five-fold increase was observed in the past *** countries ranked 56th to 218th on the standard competition ranking(SCR)in worldwide publications in the field of infectious ***,with a total publication of 464(19.27%)documents ranked first among Arab countries,while Kuwait University was the most productive institution with a total of 158(6.56%)*** citation per document published in Arab countries was 13.25 and the h-index was ***(230;9.55%),malaria(223;9.26%),and hepatitis(189;7.8%)were the top three infectious diseases studied as according to the retrieved ***:The present data reveals that some Arab countries contribute significantly to the field of infectious ***,Arab countries need to work harder to bridge the gap in this *** with non-Arab countries in the Middle East,research output from Arab countries was high,but more efforts are needed to enhance the quality o

关键词： Bibliometric Infectious diseases Arab world Web of science

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

Isolation of aerobic bacteria from ticks infested sheep in Iraq

引用

Asian Pacific Journal of Tropical Biomedicine 2016年第1期6卷 67-70页

作者： waleed Ibrahem Jalil Mohammad Mushgil Zenad Department of Veterinary Internal and Preventive Medicine College of Veterinary Medicine University of Diyala Department of Veterinary Internal and Preventive Medicine College of Veterinary Medicine University of Baghdad

Objective:To highlight the presence of aerobic bacteria in live ticks infested sheep,in Diyala Governorate,***:One hundred and thirty adult alive ticks were picked up from sheep which were reared in different farms in Diyala Governorate,Iraq,during the period from November 2012 to May *** were classified in the Natural History Museum in *** were dissected aseptically for extraction of the salivary gland and *** removed tissue from each organ was inoculated in buffer peptone water(1%)and incubated for 2 h at 37 °C,to maintain weak and/or injured bacterial cells,then transmitted to nutrient broth incubated at 37 °C for 18 *** was done on three solid bacteriological media(nutrient,blood and McConkey agars),and then incubated at37 ℃ for 24 *** identification was performed by using multiple biochemical tests and API-20 *** were analyzed by using Statistical Analysis System version 9.1,***-square test was used for comparison at significant level of P ≤ ***:Two species of ticks were identified[Rhipicephalus(Boophilus) annulatus and Hyalomma turanicum].High bacterial isolation rate was observed(483 isolates).A significant high isolation rate was recorded from Rhipicephalus annulatus(63.14%).Six bacterial species were identified[Escherichia coli(28.36%),Pseudomonas aeruginosa(18.01%),Bacillus cereus(14.69%),Staphylococcus aureus(13.66%),Citrobacter freundii(13.04%),and Enterobacter species(12.21%)].also the high bacterial isolation rates were recorded in the temperate months(November,March and April);these coincided with high reproductive performance of ***:The high isolation rate of aerobic pathogens from ticks might reflect the active contribution of this arthropod in environmental contamination and increase the probability of transmitting bacterial pathogens to their hosts.

关键词： Ticks Aerobic bacteria Sheep Iraq

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

Remote ischemic conditioning approach for the treatment of ischemic stroke

引用

Neural Regeneration Research 2020年第6期15卷 1033-1034页

作者： Seyed Mohammad Seyedsaadat David F.Kallmes waleed Brinjikji Department of Radiology Mayo Clinic

Stroke is the leading cause of disability and death in North *** has been growing interest in identifying neuroprotective strategies to reduce ischemic burden in patients with acute ischemic ***,despite extensive clinical trials,no neuroprotective agent has been found for prevention of ischemic *** ischemic preconditioning(RIC)is a promising non-invasive strategy that has been proven to provide renal and cardioprotection and has recently found to have a potential broad application in the treatment of neurovascular disease,which has bee linked to its possible effects on the release and activation of endogenous neuroprotective substances against the ischemia/reperfusion injuries in experimental *** endogenous neuroprotection might vaccinate neural tissues against effects of acute IR following primary infarction *** of the method of RIC administration,through manual or automated blood pressure cuff,RIC procedure is inexpensive and easy to *** on the experimental and clinical data,application of RIC avoids possible adverse effects and interactions associated with chemical pharmacological *** previous clinical studies RIC was safe and associated with only minor transient adverse effects in few cases,including petechia and minor limb pain,which were mostly resolved shortly after completing the treatment.

关键词： prevention treatment Remote

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

A Time Pattern-Based Intelligent Cache Optimization Policy on Korea Advanced Research Network

引用

Intelligent Automation & Soft Computing 2023年第6期36卷 3743-3759页

作者： waleed Akbar Afaq Muhammad Wang-Cheol Song Department of Computer Engineering Jeju National UniversityJeju-si63243Korea

Data is growing quickly due to a significant increase in social media ***,billions of people use an enormous amount of data to access the *** backbone network experiences a substantial load as a result of an increase in *** in the same region or company frequently ask for similar material,especially on social media *** subsequent request for the same content can be satisfied from the edge if stored in proximity to the *** that require relatively low latency can use Content Delivery Network(CDN)technology to meet their *** edge and the data center con-stitute the CDN *** fulfill requests from the edge and minimize the impact on the network,the requested content can be buffered closer to the user *** content should be kept on the edge is the primary *** cache policy has been optimized using various conventional and unconventional methods,but they have yet to include the timestamp beside a video *** 24-h content request pattern was obtained from publicly available *** popularity of a video is influenced by the time of day,as shown by a time-based video *** present a cache optimization method based on a time-based pat-tern of *** problem is described as a cache hit ratio maximization pro-blem emphasizing a relevance score and machine learning model accuracy.A model predicts the video to be cached in the next time stamp,and the relevance score identifies the video to be removed from the ***,we gather the logs and generate the content requests using an extracted video request *** logs are pre-processed to create a dataset divided into three-time slots per day.A Long short-term memory(LSTM)model is trained on this dataset to forecast the video at the next time *** proposed optimized caching policy is evaluated on our CDN architecture deployed on the Korean Advanced Research Network(KOREN)*** finding

关键词： Multimedia content delivery request pattern recognition real-time machine learning deep learning optimization caching edge computing

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

Preparation and characterization of (CeO2)x-(Fe2O3)1-x nanocomposites:reduction kinetics and hydrogen storage

引用

Rare Metals 2020年第3期39卷 218-229页

作者： Shimaa G.Sayed waleed M.A.El Rouby Ahmed A.Farghali Materials Science and Nanotechnology Department Faculty of Postgraduate Studies for Advanced Science(PSAS)Beni-Suef UniversityBeni Suef62511Egypt

A series of nanosized CeO2-Fe2O3 mixed-oxide nanocomposites with different Ce4+/Fe3+molar ratios were successfully prepared by a co-precipitation *** surface area increased with Fe2O3 content increasing up to 60 wt%in the ***,with further increase in Fe2O3 content,the surface area began to *** reduction processes of the CeO2-Fe2O3 nanocomposites were studied in a hydrogen atmosphere at 300-600℃.The reduction rates increased by increasing both the temperature and Fe2O3 content in the *** microstructure of the reduced composites at 500℃illustrated the presence of a considerable number of macro-and *** activation energy values were calculated which were in the range of 3.56-5.37 kJ mol-1 at the initial stages(up to 35%reduction)and 5.21-10.2 kJ·mol-1 at the final stages(up to 80%reduction)of *** rate-controlling mechanisms in both the initial and final reduction stages were determined,and the initial reaction stage was controlled by combined gaseous diffusion and interfacial chemical reaction mechanisms for all the composites except for pure CeO2,which was controlled by a chemical reaction *** final reaction stage was controlled by a gaseous diffusion mechanism for some composites,while for the others it was controlled by combined gaseous diffusion and interfacial chemical reaction *** hydrogen sorption properties of the nanocomposites were studied by pressure composition isotherms using a volumetric *** storage in the nanocomposites increased by increasing the temperature because of the formation of oxygen vacancies which enhance atomic H adsorption and function as strong adsorption sites forming more metal hydride covalent bonds.

关键词： CeO2-Fe2O3 nanocomposite Reduction kinetics Reduction mechanism Hydrogen storage Oxygen vacancies

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：