检索结果-南通市图书馆

malignant pheochromocytoma in neurofibromatosis; mutation screening of RET proto-oncogene, VHL and SDH gene

World Journal of medical Genetics 2013年第1期3卷 1-4页

作者： Shirin Hasani-Ranjbar mahsa m amoli maasumeh Noorani mohsen Ghadami Obesity and Eating Habits Research Center Endocrinology and Metabolism Cellular and Molecular Sciences Institute Shariati Hospital Tehran University of Medical Sciences Endocrinology and metabolism Research Center Shariati Hospital Tehran University of Medical Sciences

AIm: To investigate pathogenic mutations related to malignant pheochromocytoma in neurofibromatosis(NF).mETHODS: We present a patient with NF and metastatic pheochromocytoma in whom genetic screening for presence of pathogenic mutations in RET protooncogene, von Hippel-Lindau(VHL) and succinate dehydrogenase complex subunits B(SDHB) genes were investigated. RET proto-oncogene mutation screening for exons 10, 11, 13, 14, 15, 16 were examined by polymerase chain reaction(PCR) and direct DNA sequencing in patient. mutation screening for exons 1, 2, 3 of VHL gene was carried out. Both forward and reverse strandswere subjected to direct sequencing after PCR amplification. The entire coding sequence of SDHB gene was screened for the presence of pathogenic mutations by ***: A 45-year-old man presented with abdominal pain and hypertension over the previous year. The patient was a known case of neurofibromatosis type 1(NF1) who presented at the age of 15 years with hyperpigmented and hypopigmented lesions. After complete evaluation for hypertension, biochemical tests and imagings indicated a malignant pheochromocytoma of 120 mm × 70 mm in size. The patient underwent left adrenalectomy, nephrectomy and splenectomy. After surgery the symptoms improved and blood pressure was controlled. After 5 years he was admitted again for evaluation of hypertensive crisis. Biochemical tests were again consistent with pheochromocytoma and disease relapse. Imaging studies and liver biopsy confirmed metastatic pheochromocytoma to the liver and para-aortic area. 131 Iodine-metaiodobenzylguanidine therapy was carried out. Genetic screening of VHL(exons 1, 2, 3), RET proto-oncogene(exons 10, 11, 13, 14, 15, 16) and SDH complex subunits revealed no pathogenic mutation. CONCLUSION: We conclude that mutations in the NF1 gene are responsible for the patient's clinical findings. However, would be helpful to further examine somatic mutations for a more precise study of genotypephenot

关键词： Neurofibromatosis Familial pheochromocytoma malignant pheochromocytoma metastatic pheochromocytoma RET proto-oncogene von Hippel-Lindau Succinate dehydrogenase complex subunits

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

massive Dirac particles based on gapped graphene with Rosen-morse potential in a uniform magnetic field

引用

Chinese Physics B 2024年第8期33卷 170-178页

作者： A.Kalani Alireza Amani m.A.Ramzanpour Department of Physics Ayatollah Amoli BranchIslamic Azad UniversityAmolIran

We explore the gapped graphene structure in the two-dimensional plane in the presence of the Rosen-morse potential and an external uniform magnetic *** order to describe the corresponding structure,we consider the propagation of electrons in graphene as relativistic fermion quasi-particles,and analyze it by the wave functions of two-component spinors with pseudo-spin symmetry using the Dirac ***,to solve and analyze the Dirac equation,we obtain the eigenvalues and eigenvectors using the Legendre differential *** that,we obtain the bounded states of energy depending on the coefficients of Rosen-morse and magnetic potentials in terms of quantum numbers of principal n and spin-orbit ***,the values of the energy spectrum for the ground state and the first excited state are calculated,and the wave functions and the corresponding probabilities are plotted in terms of coordinates *** what follows,we explore the band structure of gapped graphene by the modified dispersion relation and write it in terms of the two-dimensional wave vectors K_(x) and K_(y).Finally,the energy bands are plotted in terms of the wave vectors K_(x) and K_(y) with and without the magnetic term.

关键词： massive Dirac equation Rosen–morse potential Legendre polynomial gapped graphene pseudospin symmetry

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

Property of Almost Cohen-macaulay over Extension modules

引用

Algebra Colloquium 2017年第3期24卷 509-518页

作者： Samaneh Tabejamaat Amir mafi Khadijeh Ahmadi amoli Department of mathematics Payame Noor University P.O.Box: 19395-3697 Tehran Iran Department of mathematics University of Kurdistan P.O. Box: 416 Sanandaj Iran Department of mathematics Payame Noor University P.O.Box: 19395-3697 Tehraa Iran

Let （R, m） be a Cohen-macaulay local ring of dimension d, C a canonical R-module and m an almost Cohen-macaulay R-module of dimension n and of depth t. We prove that dim Extd-n R（m,C） = n and if n ≤ 3 then Extd-n（m,C） is an almost Cohen-macaulay R-module. In particular, if n = d ≤ 3 then HomR（m, C） is an almost Cohen-macaulay R-module. In addition, with some conditions, we show that Ext1R（m, C） is also almost Cohen-macaulay. Finally, we study the vanishing Ext2R （Extd-n （m, C）, C） and Ext2R （Extd-n（m, C）, C）.

关键词： almost Cohen-macaulay module Ext functor finiteness dimension

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 Stenotrophomonas maltophilia from clinical samples: An investigation of patterns motility and production of melanin pigment

引用

Asian Pacific Journal of Tropical Biomedicine 2017年第9期7卷 826-830页

作者： Rabeeh Izadi amoli Jamileh Nowroozi Azar Sabokbar Ramazan Rajabniya Department of microbiology Karaj BranchIslamic Azad UniversityKarajIran microbiology Department of Islamic Azad University North Tehran Branch Iran Infectious Diseases and Tropical medicine Research Center Babol University of Medical SciencesBabolIran

Objectives: To investigate possible sources of Stenotrophomonas maltophilia(S. maltophilia) in the clinical ***: Different samples were collected from Amol City of Iran. Steps for the identification of S. maltophilia included culturing, biochemical tests, polymerase chain reaction(PCR) of 16 S r RNA gene and 23 S r RNA gene. In addition, production of melanin pigment and patterns of motility of the bacteria, were also ***: In our study, 20 S. maltophilia strains were isolated from clinical sources,oxygen manometer apparatus of hospitals were 7/110(6.36%), blood was 1/777(0.13%),sputum was 4/40(4%), urine was 1/2 947(0.03%), tap water was 1/240(0.42%) and dental suction was 6/120(5%). The isolated bacteria showed production of melanin pigment with rates of strong, moderate, weak, and lack of pigment. Types of motilities were seen in ***: The highest percentage of bacteria is isolated of oxygen manometer system and dental suction, yet has not been reported from oxygen manometer system. These bacteria have also been associated with patients who have respiratory problems, so it is essential for staffs of hospitals to draw attention to this source of bacteria.

关键词： Stenotrophomonas maltophilia 23S rRNA melanin motility

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

modified Coated Copper Wire as a New Fiber for SPmE-GC Analysis of Some Polycyclic Aromatic Hydrocarbons

引用

materials Sciences and Applications 2016年第6期7卷 316-325页

作者： Akram masoumi maryam Abbasian m. moharamzadeh Hossein Salar amoli Nano Layer Coating Lab Iranian Research Organization for Science and Technology (IROST) Tehran Iran

In this study for the first time, a novel copper Solid Phase microextraction (SPmE) fiber has been introduced for removal of naphthalene, phenanthrene and anthracene from aqueous solution. Copper was used as a solid support, which was at first coated by 3-mercaptopropyltrimethoxysi- lane. A stationary phase of oxidized multi walled carbon nanotube (mWCNTs)) was bonded to the surface of the copper wire. The developed SPmE was characterized by IR and Scanning Electron microscopy (SEm) and coupled to gas chromatography for separation of the analytes. Stability of the fiber, the effect of coating thickness and recovery time were optimized. The mWCNTs film thickness was about 5 μm which was perfect for a rapid mass transfer. The detection limits were at the range of 0.005 to 0.1 μg·L-1. The calibration curves were linear R2 > 0.9813 in the range of 0.01 to 5 μg·L-1. The method has been successfully applied for real samples with standard addition of 5 μL-1 of each sample. Stability study of the fiber to acid and alkali shows that it can be used for more than 50 times.

关键词： Gas Chromatography Solid Phase micro Extraction Coated Copper Wire Polycyclic Aromatic Hydrocarbons Carbon Nanotube

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

Opto-Electronic Investigation of Wet Coating Deposition of ITO Nanopowders on Flexible Substrate Using Pulse Nd-YAG Laser

引用

Optics and Photonics Journal 2013年第4期3卷 300-303页

作者： H. Salar-amoli H. Amani Department of Chemistry AmirKabir University of Technology Teheran I. R. Iran Faculty of Chemical Technology Iranian Research Organization for Science and Technology Tehran I. R. Iran

Transparent thin layer indium tin oxide was coated on polyethylene tetraphetalate (PET) substrate by means of spin coating process and its opto-electronic properties have been investigated. The surface treated by pulse Nd-YAG laser. Pulse frequency, duration and energy were, 1000 Hz, 0.2 to 20 ms and 25 to 40 J respectively. The effect of treatment on crystallization, optical properties and bonding processes of the thin layer was investigated. The results show that ITO coated on flexible PET substrates is conductive and transparent. The sheet transparency for a 350 nm thickness in the visible range is more than 83.6%. Using Nd-YAG laser increased conductivity by a factor of 100 times and causes higher bonding performances.

关键词： Pulse Nd-YAG Laser PET Spin Coating Flexible Substrate Opto-Electronic

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 Plasticizers on mechanical Properties and Water Vapor Permeability of Gelatin-Based Edible Films Containing Clay Nanoparticles

引用

World Journal of Nano Science and Engineering 2015年第4期5卷 178-193页

作者： mahsa Rezaei Ali motamedzadegan Faculty of Food Industries Ayatollah Amoli Branch Islamic Azad University Amol Iran Department of Food Science Sari University of Agricultural Sciences and Natural Resources Sari Iran

The effects of glycerol and sorbitol as two plasticizers on mechanical properties, water vapor permeability, thermal properties, color and capability of heat sealing of gelatin films (of phytophagous fish, bovine gelatin with high gel-forming ability, and bovine gelatin with low gel-forming ability) containing clay nanoparticles were studied in this research. For this purpose, 6 × 2 × 3 factorial experiments using the completely randomized design and comparison of the means at 95% confidence level (α = 0.05) were performed. Higher concentrations of plasticizers increased percentage elongation to the breaking point. When glycerol concentration was raised to over 20%, flexibility of the layers improved but their water vapor permeability increased. The minimum passage of water vapor was that of fish-skin gelatin films containing clay nanoparticles and 30% sorbitol, and the maximum that of bovine gelatin films with high gel-forming ability which contained nanoparticles but no plasticizers (p 0.05). All samples had heat sealing capability, and fish-skin gelatin films containing clay nanoparticles had better heat sealing capability compared with the other samples so that fish-skin gelatin films containing clay nanoparticles with 25% glycerol and 5% sorbitol had the highest flexibility and tensile strength, and remained attached to where they were heat sealed. Electron microscope images showed that films without plasticizers had uniform surfaces, but that samples containing glycerol at concentrations of over 0.20 g/g gelatin exhibited cavities between gelatin chains and that water vapor permeability in gelatin films containing clay nanoparticles.

关键词： Gelatin Clay Nanoparticles Plasticizer mechanical Properties Water Vapor Permeability

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

Rapid and Continuous Extraction of methyl Red from Wastewater Using Counter Current Chromatography

引用

materials Sciences and Applications 2016年第6期7卷 307-315页

作者： Nasrin Adli Azam Azimvand Zinolabedin. Bashiri Sadr moharam moharamzadeh Hossein Salar amoli Chromatography Lab Faculty of Chemical Technology Iranian Research Organization for Science and Technology Tehran Iran Payam Noor University Gazvin Branch Gazvin Iran

A new prototype and simple low speed counter current chromatography (LSCCC) has been fabricated and a laboratory work has been carried out for rapid and continuous removal of methyl red from wastewater using xylene as an extractant. The distribution ratio (D) and percentage of recoveries were calculated. The optimum concentration for extraction of methyl red was in the range of 2 × 10-4 to 8 × 10-4 mol·L-1. maximum extraction achieved at pH range of 2 to 4.5. Various dye concentrations and solvent effects were studied to optimized conditions. It was shown that when the ratio of the organic phase to aqueous phase increased to more than 3:1, the striping efficiency decreased sharply. The experiments were carried out for 5 times and the highest extraction achieved was 99.8 per cent by two-solvent system LSCCC in just 5 minutes. Real wastewater samples were analyzed and the efficiency of the technique was compared with liquid-liquid extraction (LLE). In practice it was shown that although both techniques are rapid, the efficiency of the LSCCC is much better than LLE.

关键词： Counter Current Chromatography Rapid Extraction methyl Red Continuous Removal

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

误诊为黑色素瘤的视网膜色素上皮细胞来源的腺癌1例(英文)

引用

国际眼科杂志 2007年第5期7卷 1260-1263页

作者： Fahimeh Asadi-amoli mohammad Taher Rajabi Hedyeh moradi mohammad Riazi-Esfahani 伊朗德黑兰大学病理科伊朗德黑兰大学眼科

视网膜色素上皮细胞(RPE)形成的肿瘤较少,常见肿瘤类型有黑色素瘤,少见类型包括RPE形成的腺癌,这两种肿瘤在临床和病理特点上都有所不同。本文报道1例60岁的男性患者,因为进展性视力丧失,眼科诊断为黑色素瘤而行右眼摘除术。病理学检查... 详细信息

视网膜色素上皮细胞(RPE)形成的肿瘤较少,常见肿瘤类型有黑色素瘤,少见类型包括RPE形成的腺癌,这两种肿瘤在临床和病理特点上都有所不同。本文报道1例60岁的男性患者,因为进展性视力丧失,眼科诊断为黑色素瘤而行右眼摘除术。病理学检查发现后极部接近视神经处可见实性、界限清楚的病灶。组织学检查见构成肿瘤的细胞,具有大的多形、浓染的核,核仁突出,色素极少;肿瘤细胞多呈乳头状排列。为和黑色素瘤进行区别,进一步行免疫组织化学染色。结果显示上皮膜抗原(EmA)为强阳性,HmB45阴性,支持RPE来源的腺癌诊断。系统检查排除了转移癌。总之,虽然RPE来源的腺癌非常少见,但必须清楚它与脉络膜黑色素瘤在诊断上的异同点。

关键词： RPE 黑色素瘤腺癌

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

临床表现似视网膜母细胞瘤的脉络膜黑色素细胞瘤1例(英文)

引用

国际眼科杂志 2009年第2期9卷 220-222页

作者： mohammad Taher Rajabi Fahimeh Asadi amoli Narghes Zandevakil Seyed Hesam Hashemian mohammad Bagher Rajabi 德黑兰大学医学院眼科德黑兰大学医学院病理科

我们报道罕见的脉络膜黑色素细胞瘤1例,以视网膜母细胞瘤之诊断行眼球内容物剜除术。患儿14mo,以左眼外斜视约10mo主诉就诊。眼科检查及影像学检查显示视网膜脱离并钙化病灶。患儿诊断为视网膜母细胞瘤,患眼行眼球内容物剜除术。组织病... 详细信息

我们报道罕见的脉络膜黑色素细胞瘤1例,以视网膜母细胞瘤之诊断行眼球内容物剜除术。患儿14mo,以左眼外斜视约10mo主诉就诊。眼科检查及影像学检查显示视网膜脱离并钙化病灶。患儿诊断为视网膜母细胞瘤,患眼行眼球内容物剜除术。组织病理学检查显示肿瘤细胞体积大,多面体型,核小,胞浆含大量黑色素颗粒,提示脉络膜及睫状体黑素细胞瘤之诊断。以往有脉络膜及睫状体黑色素细胞瘤表现类似与恶性黑素瘤的报道,但是,黑色素细胞瘤表现为钙化病灶及视网膜脱离,被误诊为视网膜母细胞瘤,此病例罕见,以往未见报道。

关键词：脉络膜黑色素细胞瘤视网膜母细胞瘤

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：