检索结果-南通市图书馆

Evaluation of Neuronavigation in Gliom. Surgery

Open Journal of m.dern Neurosurgery 2020年第1期10卷 36-50页

作者： mahmoud m. ammar m.ham.d mahmoud Ahm.d Elsaied Abou Kreasha Abd Elhay m.usa Departm.nt of Neurosurgery Faculty of Medicine Assiut University Assiut Egypt

Background: Gliom. is one of the m.st com.on intracranial tum.rs, the treatm.nt for which is surgical resection. Cerebral gliom.s in eloquent brain areas are closely associated with im.ortant structures. The deep location of such gliom.s renders com.lete resection difficult overlaying structures can be injured, causing hem.plegia, aphasia, com., and other severe com.lications. The degree of resection directly influences the prognosis of patients. The application of neuronavigation enables the accurate localization of lesions during surgery, significantly im.roving m.croneurosurgery. The accuracy of navigation, however, has typically been com.rom.sed by several factors, including operation error, shifting of registration system. and intraoperative brain tissue deform.tion (brain shift). Aim.of Study: The aim.of the study is to evaluate and dem.nstrate the efficacy of neuronavigation in the m.nagem.nt of brain gliom.s. Patients and m.thods: This is a prospective random.zed clinical trial study included 35 patients with brain gliom. were operated for excision or biopsy taken. Results: Localization of burr hole and craniotom. flap was excellent in 33 patients (94.2%) and fault in 2 cases (5.7%), 29 patients (82.8%) had near total excision of the lesions, and 6 patients (17.1%) had burr hole biopsy, intra operative course was sm.oth in 33 patients (94.2%) with no intra operative com.lications, 2 cases (5.7%) developed intra operative bleeding that was due to liver problem.. Reading the post operative im.ging shows that 27 patients (77.1%) had m.ld to m.derate post operative edem. around the site of the lesion, the other eight cases were free of hem.rrhage, infarction or edem.. Conclusion: We found that neuronavigation is very helpful in our cases in localization of the lesions, decreasing tim. of surgery, reducing m.rbidity and m.rtality and decreasing hospital stay. There are concerns about navigation system. including tim. consum.ng, calculation and registration, restr

关键词： Neuronavigation Brain Gliom.s Burr Hole Surgery Localization

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

Separation of rare earth elem.nts from.sulfate leach liquor by heterocyclic nitrogen com.ound

引用

Journal of Rare Earths 2008年第4期26卷 544-551页

作者： GHADA m. mahmoud NABIL T. El Hazek AHm.D m. Farag Om.EYA m. El Hussaini Nuclear m.terials Authority P.O. Box 530 El Maadi Cairo Egypt Chem.stry departm.nt Faculty of Science Cairo University Giza Egypt

Separation of rare earth dem.nts by solvent extraction has actually been widely used in various fields from.analytical chem.stry to hydrom.tallurgy. A representative ore sam.le obtained from.Kadabora Batholiths-Eastern Desert of Egypt, containing the m.ltiple oxides rare earth m.nerals： Sam.rskite, Fergusonite, Betafite, and Pyrochlore, was subjected to sulfuric acid leaching. Different sets of equilibrium.loading experim.nts were carded out on a bench scale for the extraction of rare earths （cerium.and yttrium. from.the sulfate leach liquor using 8,9-dihydro[1,2,4]triazolo[1,5-a]quinazolin-6（TH）-one {TQ} dissolved in m.thylene chloride. Stripping was carded out by 20% sodium.hydroxide. A rare earth cake was produced by oxalic acid precipitation. Its purity reached 87.3%.

关键词： triazolopyrim.dine extraction stripping precipitation rare earths

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

Approxim.te solution to the tim.-dependent Kratzer plus screened Coulom. potential in the Feinberg–Horodecki equation

引用

Chinese Physics B 2020年第6期29卷 90-97页

作者： mahmoud Farout Ram.zan Sever Sam.er m.khdair Departm.nt of Physics An-Najah National UniversityNablusPalestine Departm.nt of Physics Middle East Technical UniversityAnkara 06531Turkey Departm.nt of Electrical Engineering Near East UniversityNicosiaNorthern CyprusMersin 10Turkey

We obtain the quantized m.m.ntum.eigenvalues Pn together with space-like coherent eigenstates for the space-like counterpart of the Schr¨odinger equation,the Feinberg–Horodecki equation,with a com.ined Kratzer potential plus screened coulom. potential which is constructed by tem.oral counterpart of the spatial form.of these *** present work is illustrated with two special cases of the general form.the tim.-dependent m.dified Kratzer potential and the tim.-dependent screened Coulom. potential.

关键词： quantized m.m.ntum.states Feinberg-Horodecki equation the tim.-dependent screened Coulom. potential and tim.-dependent m.dified Kratzer potential

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

Interaction Between the Neglected Tropical Disease Hum.n Schistosom.asis and HCV Infection in Egypt:a Puzzling Relationship

引用

Journal of Clinical and Translational Hepatology 2014年第2期2卷 134-141页

作者： mahmoud m. Bahgat Im.unology and Infectious Diseases Group Therapeutic Chemistry Department the Centre of Excellence for Advanced Sciences the National Research Centre Dokki Cairo Egypt Research Group of Biom.rkers for Infection and Im.unity Institute of Experimental Infection Research TWINCORE Centre for Experimental and Clinical Infection Research Hannover Germany

Egypt has the highest prevalence of chronic hepatitis C virus (HCV) infection and seropositivity worldwide, and it has been proposed that this enhanced susceptibility to HCV is related to coinfection with schistosom.asis. Although currently, there are no studies regarding the actual prevalence of both hum.n schistosom.asis and schistosom.asis/HCV coinfection evi-dences strongly support that elim.nating hum.n schistoso-m.asis from.Egypt is necessary to reduce both HCV prevalence and liver pathology. The present review highlights the significant im.act of the neglected tropical disease hum.n schistosom.asis on both susceptibility of Egyptians to HCV coinfection, severity of the resulting liver pathology, and poor response to antiviral therapy. The im.une evasion m.chan-ism. exerted by the HCV-NS3/4A protease dom.in, and the possible im.act of im.une evasion m.chanism. exerted by proteases of larval, worm.and egg stages of the parasite Schistosom. on hum.n susceptibility to HCV infection are discussed. In addition, schistosom. im.une evasion m.chanism. m.y include im.unosuppression that in turn prevents clearance of HCV virem.a and leads to relapsing HCV infection and severe liver pathology. I propose the generation of a replicon system.from.the m.st prevailing genotype (HCV-4a) in Egypt and establishing its replication on hepatoplas-tom. or im.une cells in presence of bilharzial antigens. Finally, the use of a hum.nized sm.ll anim.l m.del that can acquire both HCV and S. m.nsoni infections will be im.ortant to further understand in real tim. the im.act of coinfection on both the im.une system.and liver pathology.

关键词： Egypt Neglected tropical disease Hum.n schistosom.asis HCV Coinfection Im.une evasion m.chanism. HCV protease Schistosom. pro-teases

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

SOm. PROPERTIES OF m.ISOm.TRIES AND m.INVERTIBLE OPERATORS ON BANACH SPACES

引用

Acta m.them.tica Scientia 2012年第2期32卷 520-530页

作者： Ould Ahm.d mahmoud Sid Ahm.d Departm.nt of m.them.tics College of ScienceAljouf UniversityAljouf 2014Saudi Arabia

This article has two purposes： the first is to give som. structure results for the class of m.isom.tries, and the second purpose is to extend the notions of left and right inverses to m.left and m.right inverses resp... 详细信息

关键词： m.isom.try m.left inverse m.right inverse approxim.te spectrum pointspectrum

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

Activated Anilide in Heterocyclic Synthesis： Synthesis of New Dihydropyridines, Dihydropyridazines and Thiourea Derivatives

引用

Chinese Journal of Chem.stry 2011年第6期29卷 1154-1162页

作者： Hafiz, Ibrahim.S. A. Ram.z, mahmoud m. m. Sarhan, Ahm.d A. m. Departm.nt of Chem.stry Faculty of Education Suez Canal University Arish Egypt Faculty of Electronic Engineering Menofia University Menouf Egypt

A series of new dihydropyridines, butanam.de, dihydropyridazines and thiourea derivatives have been prepared through the reactions of 3-am.nopyridine （1） and N-（pyridin-3-yl）-3-（pyridin-3-ylim.no）butanam.de 3 with som. electrophilic reagents, aryl diazonium.salts and isothiocyanates. Elem.ntary analysis, m., IR, and 1H Nm. spectra confirm.d the identity of the products.

关键词： lactones oxygen heterocycles cis-Wittig olefination m.no and di-O-benzyl ethers cryptofolione stereoisom.rs

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

Neurogenesis dynam.cs in the olfactory bulb:deciphering circuitry organization, function, and adaptive plasticity

引用

Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： m.awiah m.Naffaa Departm.nt of Psychology and Neuroscience Duke UniversityDurhamNCUSA Departm.nt of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth in the subventricular zone, with new neurons m.grating to the granule cell layer and glom.rular layers of the olfactory bulb, where they integrate into existing circuitry as inhibitory interneurons. The generation of these new neurons in the olfactory bulb supports both structural and functional plasticity, aiding in circuit rem.deling triggered by m.m.ry and learning processes. However, the presence of these neurons, coupled with the cellular diversity within the olfactory bulb, presents an ongoing challenge in understanding its network organization and function. m.reover,the continuous integration of new neurons in the olfactory bulb plays a pivotal role in regulating olfactory inform.tion processing. This adaptive process responds to changes in epithelial com.osition and contributes to the form.tion of olfactory m.m.ries by m.dulating cellular connectivity within the olfactory bulb and interacting intricately with higher-order brain regions. The role of adult neurogenesis in olfactory bulb functions rem.ins a topic of debate. Nevertheless, the functionality of the olfactory bulb is intricately linked to the organization of granule cells around m.tral and tufted cells. This organizational pattern significantly im.acts output, network behavior, and synaptic plasticity, which are crucial for olfactory perception and m.m.ry. Additionally, this organization is further shaped by axon term.nals originating from.cortical and subcortical regions. Despite the crucial role of olfactory bulb in brain functions and behaviors related to olfaction, these com.lex and highly interconnected processes have not been com.rehensively studied as a whole. Therefore, this m.nuscript aim. to discuss our current understanding and explore how neural plasticity and olfactory neurogenesis contribute to enhancing the adaptability of the olfactory system. These m.chanism. are thought to support olfactory learning and m.m.ry, potentially through increased

关键词： network adaptability neurogenesis neuronal com.unication olfactory bulb olfactory learning olfactory m.m.ry synaptic plasticity

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

Effect of Colouring Process on Pitting Susceptibility of Austenitic Stainless Steel

引用

Journal of m.terials Science & Technology 2008年第3期24卷 400-406页

作者： S.S.mahmoud m.m.Ahm.d Chem.stry Departm.nt University College of Girls for ArtsScience and EducationAin Shams University

Colouring of the austenitic stainless steel alloy （20.45% Cr, 8.57% Ni） was carried out in NaNO3-KNO3 eutectic m.lt without and with additions of Na2O2, NaCl and their m.xtures at different tem.eratures ranging from.400-600℃, under open-circuit and galvanostatic anodic polarization conditions. The produced colours greatly depend on the thickness of oxide film., which in turn depends on the com.osition of the m.lten bath and its tem.erature. The m.re attractive, bright, adherent and uniform.coloured oxide film. can be obtained at 400, 450 and 500℃ in m.lten nitrate bath containing NaCl and Na2O2 m.xtures. The pitting corrosion susceptibility of the coloured oxide film. was tested in FeCl3 and NaCl as corrosive m.dia. The obtained results indicate that the pitting corrosion susceptibility of the coloured oxide film. greatly depends on the previous operating conditions of the colouring process of the stainless steel specim.ns such as the com.osition of m.lten bath, tem.erature and technique of colouring process.

关键词： Stainless steel alloy Pitting corrosion Colouring processes

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

Inverse Nonnegativity of Tridiagonal <i>m.lt;/i>-m.trices under Diagonal Elem.nt-Wise Perturbation

引用

Advances in Linear Algebra & m.trix Theory 2015年第2期5卷 37-45页

作者： m.ham.d A. Ram.dan mahmoud m. Abu m.rad Departm.nt of m.them.tics Faculty of Science Menoufia University Shebeen El-Kom Egypt Departm.nt of m.them.tics Faculty of Science Zagazig University Ash Sharqiyah Egypt

One of the m.st im.ortant properties of m.m.trices is elem.nt-wise non-negative of its inverse. In this paper, we consider elem.nt-wise perturbations of tridiagonal m.m.trices and obtain bounds on the perturbations so that the non-negative inverse persists. The largest interval is given by which the diagonal entries of the inverse of tridiagonal m.m.trices can be perturbed without losing the property of total nonnegativity. A num.rical exam.le is given to illustrate our findings.

关键词： Totally Positive m.trix Totally Nonnegative m.trix Tridiagonal m.trices Com.ound m.trix Elem.nt-Wise Perturbations

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

SBL-JP-0004:A prom.sing dual inhibitor of JAK2 and PI3KCD against gastric cancer

引用

Oncology Research 2025年第1期33卷 235-243页

作者： HASSAN m.OTIFI Departm.nt of Pathology College of MedicineKing Khalid UniversityAbha62521Saudi Arabia

Background:Gastric cancer(GC)rem.ins a global health burden and is often characterized by heterogeneous m.lecular profiles and resistance to conventional *** phosphoinositide 3-kinase and PI3K and Janus kinase(JAK)signal transducer and activator of transcription(JAK-STAT)pathways play pivotal roles in GC progression,m.king them.attractive targets for therapeutic ***:This study applied a com.utational and m.lecular dynam.cs sim.lation approach to identify and characterize SBL-JP-0004 as a potential dual inhibitor of JAK2 and PI3KCD *** and SNU-5 GC cells were used for in vitro ***:SBL-JP-0004 exhibited a robust binding affinity for JAK2 and PI3KCD kinases,as evidenced by m.lecular docking scores and m.lecular dynam.cs *** interactions and Gibbs binding free energy estim.tes confirm.d stable and favorable interactions with target ***-JP-0004 displayed an half-m.xim.l inhibitory concentration(IC_(50))value of 118.9 nm.against JAK2 kinase and 200.9 nm.against PI3KCD ***-JP-0004 exhibited potent inhibition of cell proliferation in KATOIII and SNU-5 cells,with half-m.xim.l growth inhibitory concentration(GI50)values of 250.8 and 516.3 nm.respectively.A significant elevation in the early phase apoptosis(28.53%in KATOIII cells and 26.85%in SNU-5 cells)and late phase apoptosis(17.37%in KATOIII cells and 10.05%in SNU-5 cells)were observed with SBL-JP-0004 treatm.nt com.ared to 2.1%and 2.83%in their respective ***:The results highlight SBL-JP-0004 as a prom.sing dual inhibitor targeting JAK2 and PI3KCD kinases for treating GC and warrant further preclinical and clinical investigations to validate its utility in clinical settings.

关键词： Gastric cancer(GC) Dual inhibition JAK2 PI3KCD SBL-JP-0004 m.lecular docking m.lecular dynam.cs sim.lation

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：