检索结果-南通市图书馆

Electrodes based on nano-tree-like vanadium nitride and carbon nanotubes for micro-supercapacitors

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

Journal of Materials Science & Technology 2018年第6期34卷 976-982页

作者： Nadir Ouldhamadouche Amine Achour Raul Lucio-Porto Mohammad Islam Shahram Solayman Ali arman Azin Ahmadpourian Hamed Achour Laurent Le Bri-zoual Mohamed Abdou Djouadi Thierry Brousse Laboratoire de Génie Physique Université lbn Khaldoun BP P 78 Zaaroura 14000 Tiaret Algeria National Institute of Scientific Research 1650 Bd. Lionel-Boulet Varennes QCJ3X1P7 Canada Universidad Autónoma de Nuevo León Facultad de lngeniería Mecdnica y Eléctrica San Nicolas de los Garza 66450 Nuevo León Mexico Universidad Autónoma de Nuevo León Centro de lnnovación Investigación y Desarrollo en lngeniería y Tecnología Apodaca 66600 Nuevo León Mexico Deanship of Scientific Research Advanced Manufacturing Institute King Saud University P.O. Box 800 Riyadh 11421 Saucli Arabia Department of Physics Science and Research Branch Islamic Azad University Tehran Iran Vacuum Technology Group ACECR Sharif Branch Tehrun Iran Young Researchers and Elite Club Arak Branch Islamic Azad University Arak Iran Institute of Condensed Matter Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland University of Rennes 1 Institut d'Electronique et de Télécommunications IETR - UMR CNRS 6164 Campus de Beaulieu -Bat 11D 263 Av General Leclerc 35042 Rennes cedex France Institut des MateriauxJean Rouxel (IMN) Universite de Nantes CNRS 2 rue de la Houssiniere BP32229 44322 Nantes Cedex 3 France Reseau sur le Stockage Electrochimique de l'Energie (RS2E) FR CNRS 3459 France

Vanadium nitride （VN） was deposited by DC-sputtering on a vertically aligned carbon nanotube （CNTs） template for the purpose of nano-structuration. This led to the fabrication of hierarchically composite electrodes consisting of porous and nanostructured VN grown on vertically aligned CNTs in a nano-treelike configuration for micro-supercapacitor application. The electrodes show excellent performance with an areal capacitance as high as 37.5 mF cm^-2 at a scan rate of 2 mV s^-1 in a 0.5 M K2504 mild electrolyte solution. Furthermore, the capacitance decay was only 15% after 20,000 consecutive cycles. Moreover, the capacitance was found to increase with VN deposit thickness. The X-ray photoelectron spectroscopy analyses of the electrodes before and after cycling suggest that the oxide layers that form at the VN surface is the responsible for the redox energy storage in this material. Such electrodes can compete with other transition metal nitride based electrodes for micro-supercapacitors.

关键词： Vanadium nitride CNTs Micro-supercapacitors Surface chemistry

Development of a Method for Efficient Cost-effective Screening of Aspergillus Niger Mutants Having Increased Production of Glucoamylase and Glucose Oxidase

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

Development of a Method for Efficient Cost-effective Screeni...

作者： arman Bessembayev 华东理工大学

学位级别：硕士

Aspergillus niger is the one of the most important filamentous fungi used for biotechnological *** has been utilized in industrial fermentations for more than 80 years because of its ability to accumulate and secrete large quantities of metabolites,such as organic acids,and large amounts of heterologous and homologous *** is one of the extracellular products of *** are the basis of *** the mutagenesis and high throughput screening,high-yield industrial strains can be obtained *** this paper,we developed an efficient cost-effective screening process to improve production of glucoamylase in *** cultivation of *** was achieved with well-dispersed morphology in 48-deep-well microtiter plates,which increased the throughput of the samples compared to traditional flask *** was a close negative correlation between glucoamylase and its pH of the fermentation broth.A novel high-throughput analysis method using Methyl Orange was *** compared to the conventional analysis method using 4-nitrophenyl a-D-glucopyranoside as substrate,a correlation coefficient of 0.96 by statistical analysis was *** this novel screening method,three genetic stable mutants of glucoamylase producer strain with more than 50%increase in yield were *** to the parent strain with an activity of 1.31×103 AGI ml-1 in flasks,the glucoamylase activity of mutantsⅦ-F-6（2.23×103 AGI ml-1）,Ⅲ-F-2（2.09×103 AGI ml-1）and Ⅳ-D-1（1.97×103 AGI ml-1）were increased by 70%,59%and 50%***,four heredity stable mutants of glucose oxidase producer strain were selected for further *** to the parent strain with a activity of 1.6×102 U/ml in flasks for the extracellular activity and 2.4×102 U/ml,the GOD activity of mutants E1（2.1×102 U/ml and 3.9×102 U/ml）,G1（2.6×102 U/ml and 3.8×102 U/ml）and H1（2.4×102 U/ml and 2.7×102U/ml）were increased by 68,53 and 45%respectivelyThe results emph

关键词：黑曲霉糖化酶葡萄糖氧化酶高通量筛选甲基橙指示剂溶液工业发酵

Comparative investigation of the free radical scavenging potential and anticancer property of Diospyros blancoi(Ebenaceae)

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2016年第5期6卷 410-417页

作者： Muhammad Ali Khan Mahbubur Rahman Nazmul Sardar Saiful Islam arman Badrul Islam Jahangir Alam Khandakar Mamunur Rashid Golam Sadik AHM Khurshid Alam Department of Pharmacy Bangabandhu Sheikh Mujibur Rahman Science and Technology University Department of Pharmacy University of Rajshahi Drugs and Toxins Research Division Bangladesh Council of Scientific and Industrial Research Product Development and Validation Department Square Pharmaceutical Limited Laboratory of Genetics Graduate School of BiostudiesKyoto University

Objective: To investigate the comparative effects of Diospyros blancoi(Ebenaceae)leaves(DBL), root bark(DBRB) and stem bark(DBSB) on free radicals and ***: The polyphenol contents, antioxidant and free radical scavenging properties were determined using standard spectrophotometric methods. Cytotoxicity and anticancer activities were performed on brine shrimp nauplii and Ehrlich ascite carcinoma cells, ***: Among the extracts, DBSB showed the highest total antioxidant capacity and reducing capacity on ferrous ion. Based on 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radical scavenging activities, DBSB showed(95.760 ± 0.343)% and(67.460 ± 2.641)%scavenging with IC50of(3.10 ± 0.17) and(50.00 ± 3.11) mg/m L, respectively. The IC50 values of standard butylated hydroxytoluene and catechin(CA) for 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radicals were(8.50 ± 0.25) and(75.00 ± 0.14) mg/m L,respectively suggesting that DBSB had a significant(P DBRB > CA > ***, the phenolic [(139.91 ± 3.924) mg gallic acid equivalent/g] and flavonoid contents[(412.00 ± 16.70) mg catechin equivalent/g)] of DBSB were higher than that of other extracts. In addition, the DBSB showed the moderate cytotoxic and anticancer ***: Our results indicate that Diospyros blancoi stem bark had the significant highest antioxidant and free radical scavenging properties as well as moderate anticancer ***, we assume that the anticancer activity of this plant can be, at least in part, attributed to its content in phenolic compounds as well as its significant free radical scavenging properties.

关键词： Diospyros blancoi Free radicals Polyphenols Antioxidant Cytotoxicity Anticancer

Percutaneous antegrade management of large proximal ureteral stones using non-papillary puncture

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Urology 2024年第1期11卷 110-114页

作者： arman Tsaturyan Angelis Peteinaris Constantinos Adamou Konstantinos Pagonis Lusine Musheghyan Anastasios Natsos Theofanis Vrettos Evangelos Liatsikos Panagiotis Kallidonisa Department of Urology University of PatrasPatrasGreece Gerald and Patricia Turpanjian School of Public Health American University of ArmeniaYerevanArmenia Department of Anesthesiology and ICU University of PatrasPatrasGreece Department of Urology Medical University of ViennaViennaAustria

Objective:To evaluate the feasibility and the safety of medial non-papillary percutaneous nephrolithotomy(npPCNL)for the management of large proximal ureteral ***:We evaluated prospectively collected data of 37 patients with large proximal ureteral stones more than 1.5 cm in diameter treated by prone *** on stone size,in-toto stone removal or lithotripsy using the Lithoclast®Trilogy(EMS Medical,Nyon,Switzerland)was *** parameters including operative time(from start of puncture to the skin suturing),stone extraction time(from the first insertion of the nephroscope to the extraction of all stone fragments),and the stone-free rate were ***:Twenty-one males and 16 females underwent npPCNL for the management of large upper ureteral *** median age and stone size of treated patients were 58(interquartile range[IQR]:51-69)years and 19.3(IQR:18.0-22.0)mm,*** median operative time and stone extraction time were 25(IQR:21-29)min and 8(IQR:7-10)min,*** case(2.7%)of postoperative bleeding and two cases(5.4%)of prolonged fever were managed *** stone-free rate at a 1-month follow-up was 94.6%.Conclusion:The npPCNL provides a straight route to the ureteropelvic junction and proximal *** from a dilated portion of the ureter under low irrigation pressure with larger diameter instruments results in effective and safe stone extraction within a few minutes.

关键词： Antegrade percutaneous nephrolithotomy Proximal ureteral stone Non-papillary puncture Large ureteral stone Prone percutaneous nephrolithotomy

Xp11.2易位/TFE3基因融合相关的罕见肾细胞癌 ...

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

作者： MOHAMMAD arman HOSSAIN 重庆医科大学

学位级别：硕士

背景:Xp11.2易位/TFE3基因融合肾癌（Xp11.2异位性肾癌）在2004年被世界卫生组织（WHO）列为罕见的肾细胞癌亚型。这种类型的肾癌以往主要被认为主要发生在小儿,但目前发现在它也常出现在成人患者中。在晚期Xp11.2异位性肾癌患者中,发... 详细信息

背景:Xp11.2易位/TFE3基因融合肾癌（Xp11.2异位性肾癌）在2004年被世界卫生组织（WHO）列为罕见的肾细胞癌亚型。这种类型的肾癌以往主要被认为主要发生在小儿,但目前发现在它也常出现在成人患者中。在晚期Xp11.2异位性肾癌患者中,发生器官转移的概率较高,并且预后不良。目前研究发现,与儿童相比,Xp11.2异位性肾癌的成年患者的预后更差。目的:本文旨在探究Xp11.2异位性肾癌的临床表现,病理特征,诊断和治疗方法,并进行文献回顾。方法:收集2015年8月至2018年11月在重庆医科大学附属第一医院收治的8例确诊为XP11.2 TFE3肾细胞癌患者的临床资料和一般信息。我们对数据进行回顾性分析且对Xp11.2异位性肾癌的相关文献进行了回顾综述。结果:从2015年8月至2018年11月,我们共确诊了8例Xp11.2异位性肾癌例患者,其中男性患者3例,女性患者5例。年龄范围在是5岁至62岁,平均年龄是33.25岁。其中有6例患者无明显临床无症状,主要为偶然发现而诊断;有一例患者诉已有血尿和背痛3个月;一名患者诉已背痛4四个月。入院后对所有患者进行了腹部超声检查、CT扫描和MRI成像。结果显示其中2例患者肿瘤大于7cm,3例患者肿瘤大小在5-6cm,其余3例患者肿瘤大小在4cm以下。其中1名患者接受了右侧开放性根治性肾切除术和右侧输尿管切除术;4例患者进行了根治性肾切除术;3例患者进行了部分肾切除术。所有患者的肿瘤样本均进行了病理和免疫组织化学检查,结果提示所有患者的CD10,TFE3和RCC均为阳性。术后1例患者接受了化疗和靶向治疗,3例患者刚开始使用了干扰素治疗,中途由于产生了不良反应,后期改用了胸腺喷丁。1例患者仅接受l胸腺五肽治疗,其余3例患者无需任何辅助治疗。我们对所有患者进行了6至40个月的随访,除一名患者因肺转移在术后16个月死亡外,其余所有患者均未发现异常及疾病进展。结论:Xp11.2异位性肾癌所具有临床特征与其他肾细胞肿瘤相似。但影像学检查不典型,与一般肾癌有所不同。到目前为止,术后病理学和免疫组织化学检测依然是确诊Xp11.2异位性肾癌的金标准。如果患者有淋巴结转移,根治性或部分性肾切除术结合淋巴结清扫应为主要的治疗方案,术后应采取适当的辅助疗法如靶向治疗和免疫治疗。患者术后应赢常规随访,每3-6个月一次,随访项目包括体格检查,实验室检查及和影像检查。

关键词：肾细胞癌 TFE3 XP11.2易位治疗预后

放射性药物治疗芯片:微流控驱动的数字孪生在个体化癌症治疗中的展望

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Science Bulletin 2023年第18期68卷 1983-1988页

作者： Hamid Abdollahi Babak Saboury Madjid Soltani Kuangyu Shi Carlos Uribe arman Rahmim Department of Radiology University of British ColumbiaVancouver V5Z 1M9Canada Department of Integrative Oncology BC Cancer Research InstituteVancouver V5Z 1L3Canada Department of Radiology and Imaging Sciences Clinical CenterNational Institutes of HealthBethesda 20892USA Department of Electrical&Computer Engineering University of WaterlooWaterloo N2L 3G1Canada Department of Nuclear Medicine InselspitalBern University HospitalUniversity of BernBern 3010Switzerland Computer Aided Medical Procedures and Augmented Reality Institute of InformaticsTechnical University of MunichMunich 80333Germany Functional Imaging BC CancerVancouver V5Z 4E6Canada Department of Physics&Astronomy University of British ColumbiaVancouver V6T 1Z1Canada

Radiopharmaceutical therapy(RPT)has shown great promise in the treatment of various ***,the current approach is a"one size fits all"model,which results in varied patient responses,and there is a need for personalized RPT(Fig.S1 online).This personalized approach requires a better understanding of the physics,biology,radiobiology,pharmacology,immunology,chemistry,and imaging involved in RPT[1].Multidisciplinary research using experimental,numerical,and simulation platforms would be key to accelerating progress in this area.

关键词：放射性药物癌症治疗微流控

Diagnostic value ultrasound signs of stones less than or equal to 10 mm and clinicoradiological variants of ureteric colic

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

Asian Journal of Urology 2023年第1期10卷 39-49页

作者： Denis V.Krakhotkin Volodymyr A.Chernylovskyi Kemal Sarica arman Tsaturyan Evangelos Liatsikos Jurijus Makevicius Nikolay Yu Iglovikov Dmitry N.Pikhovkin Central District Hospital Outpatient ClinicSadovaya Lane 23KamenolomniRostov RegionRussia Private Urological Practice DniproUkraine Department of Urology Biruni University HospitalInstanbulTurkey Department of Urology University Hospital of PatrasPatrasGreece Department of Urology Medical University of ViennaViennaAustria Institute for Urology and Reproductive Health Sechenov UniversityMoscowRussia Institute of Clinical Medicine Faculty of MedicineVilnius UniversityVilniusLithuania Department and Clinic of Urology S.M.Kirov Military Medical Academy of the Ministry of Defense of the Russian FederationSt.PetersburgRussia Central District Hospital Department of SurgeryLenina Avenue 28AksayRostov RegionRussia

Objective:To determine the diagnostic value of ultrasound signs of urinary stones less than or equal to 10 mm and to determine clinico-radiological variants of ureteric ***:A total of 455 ultrasound investigations were performed in patients referring to emergency department with urolithiasis and symptoms suspected of ureteric colic between January 2021 and May *** addition to microscopic evaluation of urine sediment to detect different crystals and non-contrast spiral computed tomography to detect stones,B-mode and color Doppler sonography was performed to assess the presence of acoustic shadow(AS)and twinkle artifacts(TA)as possible signs of stone(s)in ***:While the sensitivity and specificity of AS and TA were higher than 90%in patients with stones greater than 5 mm;positive prognostic values of these parameters were found to be extremely low for stones with sizes of 1-3 mm with specificity and sensitivity values not exceeding 53%.The sensitivity and specificity of AS and TA in the upper and lower ureters were higher for stones greater than or equal to 5 than for compared to those less than 5 *** the same time,the diagnostic values of TA and AS for middle ureter stones were very *** most prevalent clinico-radiological variants of ureteric colic were types I,III,and V being observed in 39%,28% and 21% cases,***:Our results demonstrate that TA and AS parameters seem to have a very low sensitivity and specificity in the diagnosis of urinary stones less than 5 *** diagnostic value of TA and AS increase significantly in stones greater than or equal to 5 ***,clinicians need to be very careful for overestimating the diagnostic values of TA and AS for stones less than 5 mm and non-contrast spiral computed tomography must be the method of choice for patients presenting to emergency department with ureteric colic.

关键词： Ureteric colic Urolithiasis Ultrasound Twinkle artifact Non-contrast computed tomography

Diffusion-weighted magnetic resonance imaging in cancer: Reported apparent diffusion coefficients,in-vitro and invivo reproducibility

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Radiology 2016年第1期8卷 21-49页

作者： Maysam M Jafar arman Parsai Marc E Miquel Barts Cancer Institute Queen Mary University of London Clinical Physics Barts Health NHS Trust Radiology Barts Health NHS Trust William Harvey Research Institute Queen Mary University of London

There is considerable disparity in the published apparent diffusion coefficient(ADC) values across different anatomies. Institutions are increasingly assessing repeatability and reproducibility of the derived ADC to determine its variation,which could potentially be used as an indicator in determining tumour aggressiveness or assessing tumour response. In this manuscript,a review of selected articles published to date in healthy extracranial body diffusion-weighted magnetic resonance imaging is presented,detailing reported ADC values and discussing their variation across different studies. In total 115 studies were selected including 28 for liver parenchyma,15 for kidney(renal parenchyma),14 for spleen,13 for pancreatic body,6 for gallbladder,13 for prostate,13 for uterus(endometrium,myometrium,cervix) and 13 for fibroglandular breast tissue. Median ADC values in selected studies were found to be 1.28 × 10-3 mm2/s in liver,1.94 × 10-3 mm2/s in kidney,1.60 × 10-3 mm2/s in pancreatic body,0.85 × 10-3 mm2/s in spleen,2.73 × 10-3 mm2/s in gallbladder,1.64 × 10-3 mm2/s and 1.31 × 10-3 mm2/s in prostate peripheral zone and central gland respectively(combined median value of 1.54×10-3 mm2/s),1.44 × 10-3 mm2/s in endometrium,1.53 × 10-3 mm2/s in myometrium,1.71 × 10-3 mm2/s in cervix and 1.92 × 10-3 mm2/s in breast. In addition,six phantom studies and thirteen in vivo studies were summarized to compare repeatability and reproducibility of the measured ADC. All selected phantom studies demonstrated lower intra-scanner and inter-scanner variation compared to in vivo studies. Based on the findings of this manuscript,it is recommended that protocols need to be optimised for the body part studied and that system-induced variability must be established using a standardized phantom in any clinical study. Reproducibility of the measured ADC must also be assessed in a volunteer population,as variations are far more significant in vivo compared with phantom studies.

关键词： Diffusion-weighted magnetic resonance imaging Apparent diffusion coefficient reproducibility Apparent diffusion coefficient Cancer imaging Extracranial organs

Aerodynamic and Structural Evaluation of Horizontal Archimedes Spiral Wind Turbine

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aerodynamic and Structural Evaluation of Horizontal Archimed...