检索结果-南通市图书馆

Non-Enzymatic Glucose Sensor Based on the Novel Flower Like Morphology of Nickel Oxide

Soft Nanoscience Letters 2013年第4期3卷 46-50页

作者： Z.H.Ibupoto K.Khun v.beni M.Willander Division of Physical Electronics and Nanotechnology Department of Science and TechnologyLinköping UniversityCampus NorrkopingNorrkopingSweden Department of Physics Chemistryand Biology(IFM)Linkoping UniversityLinkopingSwe-den

In this study, novel nickel oxide (NiO) flowers like nanostructures were fabricated onto gold coated glass substrate by hydrothermal method using high alkaline pH medium. The structural study of nickel oxide nanostructures was performed by scanning electron microscopy (SEM) and X-ray differaction (XRD) techniques. Nickel oxide nanostructures are highly dense, uniform and possess good crystalline quality. The so prepared structures were investigated for their electrochemical properties by cyclic voltammetry and amperometric techniques. The nickel oxide flower like morphology has shown good electrochemical performances for the oxidation of glucose. The presented sensing material was able to detected glucose in a wide range of concentration of 0.001 mM to 8 mM with a high sensitivity (123 μmA/mM) and regression coefficient of 0.99. Moreover, the NiO nanostructures based sensor is highly reproducible, stable, exhibiting a fast response time and selective in the response. All the obtained results indicate the potential use of this material in the development of enzyme free sensors for the detection of glucose.

关键词： Nickel Oxide Non-Enzymatic Sensor Glucose Selective Stable

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

Detection of Breast Cancer 1 (BRCA1) Gene Using an Electrochemical DNA Biosensor Based on Immobilized ZnO Nanowires

引用

Open Journal of Applied Biosensor 2014年第2期3卷 9-17页

作者： Nur Azimah Mansor Zainiharyati Mohd Zain Hairul Hisham Hamzah Mohd Shihabuddin Ahmad Noorden Siti Safura Jaapar valerio beni Zafar Husain Ibupoto Faculty of Applied Sciences Universiti Teknologi MARAShah AlamMalaysia Faculty of Pharmacy Universiti Teknologi MARAPuncak AlamMalaysia Atta-ur-Rahman Institute for Natural Product Discovery Universiti Teknologi MARAPuncak AlamMalaysia Biosensors and Bioelectronics Centre Department of PhysicsChemistryand BiologyLinkoping UniversityLinkopingSweden Physical Electronics and Nanotechnology Division Department of Science and Technology(ITN)Campus NorrkopingLinkoping UniversityNorrkopingSweden

Herein we report an electrochemical DNA biosensor for the rapid detection of sequence (5’ AAT GGA TTT ATC TGC TCT TCG 3’) specific for the breast cancer 1 (BRCA1) gene. The proposed electrochemical genosensor is based on short oligonucleotide DNA probe immobilized onto zinc oxide nanowires (ZnONWs) chemically synthesized onto gold electrode via hydrothermal technique. The morphology studies of the ZnONWs, performed by field emission scanning electron microscopy (FESEM), showed that the ZnO nanowires are uniform, highly dense and oriented perpendicularly to the substrate. Recognition event between the DNA probe and the target was investigated by differential pulse voltammetry (DPv) in 0.1 M acetate buffer solution (ABS), pH 7.00;as a result of the hybridization, an oxidation signal was observed at +0.8 v. The influences of pH, target concentration, and non-complimentary DNA on biosensor performance were examined. The proposed DNA biosensor has the ability to detect the target sequence in the range of concentration between 10.0 and 100.0 μM with a detection limit of 3.32 μM. The experimental results demonstrated that the prepared ZnONWs/Au electrodes are suitable platform for the immobilization of DNA.

关键词： Zinc Oxide Nanowires DNA Biosensor Breast Cancer Gene BRCA1 DNA Hybridization Differential Pulse voltammetry

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

过渡元素改善B_4C/Al材料界面润湿性的机理研究（英文）

引用

稀有金属材料与工程 2017年第9期46卷 2345-2351页

作者：王治璇李丘林郑继云刘伟束国刚吴平徐贲清华大学北京100084 清华大学深圳研究生院广东深圳518055 中国核电工程有限公司广东深圳518055 新加坡科技设计大学新加坡487372

B_4C/Al复合材料是目前最理想的中子吸收材料,但工业上常用的液态搅拌法制备过程中存在着界面润湿性差的问题。结合实验及第一性原理的方法,通过研究Al(111)/AlB_2(0001)和Al(111)/TiB_2(0001)界面的结构来分析工业上添加过渡元素Ti对B_... 详细信息

B_4C/Al复合材料是目前最理想的中子吸收材料,但工业上常用的液态搅拌法制备过程中存在着界面润湿性差的问题。结合实验及第一性原理的方法,通过研究Al(111)/AlB_2(0001)和Al(111)/TiB_2(0001)界面的结构来分析工业上添加过渡元素Ti对B_4C/Al界面润湿性的改善机制。通过计算发现,Al(111)/TiB_2(0001)界面相对Al(111)/AlB_2(0001)界面具有更高的粘附功值,说明其界面结合更强。进一步对比Ti掺杂二硼化物和AlB_2的偏态密度结构,发现Ti掺杂体具有较低的反键态,表明Ti-3d和B-2p轨道电子杂化后,在B、Ti原子间形成了较强的化学键,从而促进了Al(111)/TiB_2(0001)界面处的强结合作用,提高了Al(111)/TiB_2(0001)界面粘附功,故而改善了B_4C/Al界面的润湿性。根据同样的理论依据,v掺杂体也具有较低的反键态,v和B之间的强结合效果或许能够改善B_4C/Al界面的润湿性,成为又一理想的溶体改性掺杂元素。

关键词：碳化硼铝基复合材料密度泛函理论润湿性粘附功偏态密度

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

Feeding a Saccharomyces cerevisiae fermentation product improves udder health and immune response to a Streptococcus uberis mastitis challenge in mid-lactation dairy cows

引用

Journal of Animal Science and Biotechnology 2021年第4期12卷 1351-1369页

作者： M.vailati-Riboni D.N.Coleman v.Lopreiato A.Alharthi R.E.Bucktrout E.Abdel-Hamied I.Martinez-Cortes Y.Liang E.Trevisi I.Yoon J.J.Loor Department of Animal Sciences and Division of Nutritional Sciences University of IllinoisUrbanaUrbanaIL 61801USA Department of Animal Sciences Food and Nutrition(DIANA)UniversitàCattolica del Sacro Cuore29122 PiacenzaItaly Department of Animal Production College of Food and Agriculture SciencesKing Saud UniversityRiyadh 11451Saudi Arabia Department of Animal Medicine Faculty of Veterinary MedicineBeni-Suef UniversityBeni-Suef 62511Egypt Agricultural and Animal Production Department UAM-Xochimilco04960 Mexico CityMexico Diamond v Cedar RapidsIAUSA

Background:We aimed to characterize the protective effects and the molecular mechanisms of action of a Saccharomyces cerevisiae fermentation product(NTK)in response to a mastitis *** mid-lactation multiparous Holstein cows(n=9/group)were fed the control diet(CON)or CON supplemented with 19 g/d NTK for 45 d(phase 1,P1)and then infected in the right rear quarter with 2500 CFU of Streptococcus uberis(phase 2,P2).After 36-h,mammary gland and liver biopsies were collected and antibiotic treatment started until the end of P2(9 d post challenge).Cows were then followed until day 75(phase 3,P3).Milk yield(MY)and dry matter intake(DMI)were recorded *** samples for somatic cell score were collected,and rectal and udder temperature,heart and respiration rate were recorded during the challenge period(P2)together with blood samples for metabolite and immune function *** were analyzed by phase using the PROC MIXED procedure in *** were used for transcriptomic analysis via RNA-sequencing,followed by pathway ***:DMI and MY were not affected by diet in P1,but an interaction with time was recorded in P2 indicating a better recovery from the challenge in NTK compared with *** reduced rectal temperature,somatic cell score,and temperature of the infected quarter during the *** data supported these findings,as NTK supplementation upregulated mammary genes related to immune cell antibacterial function(e.g.,CATHL4,NOS2),epithelial tissue protection(***17C),and anti-inflammatory activity(e.g.,ATF3,BAG3,IER3,G-CSF,GRO1,ZFAND2A).Pathway analysis indicated upregulation of tumor necrosis factorα,heat shock protein response,and p21 related pathways in the response to mastitis in NTK *** pathways for detoxification and cytoprotection functions along with the tight junction pathway were also upregulated in NTK-fed ***:Overall,results highlighted molecular networks involved in the protective effect

关键词： Dairy cow Mastitis RNA-sequencing Saccharomyces cerevisiae fermentation product Udder health

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

Research and development of the back-end electronics for the two-dimensional improved resistive plate chambers in CMS upgrade

引用

Radiation Detection Technology and Methods 2021年第2期5卷 181-191页

作者： P.Cao Z-A.Liu J.Zhao H.Kou J.Tao J.Song W.Gong N.Wang A.Samalan M.Tytgat N.Zaganidis G.A.Alves F.Marujo F.Torres.Da.S.ilva.De.Araujo E.M.Da Costa D.De Jesus Damiao H.Nogima A.Santoro S.Fonseca De Souza A.Aleksandrov R.Hadjiiska P.Iaydjiev M.Rodozov M.Shopova G.Sultanov M.Bonchev A.Dimitrov L.Litov B.Pavlov P.Petkov A.Petrov S.J.Qian C.Bernal A.Cabrera J.Fraga A.Sarkar S.Elsayed Y.Assran M.El Sawy M.A.Mahmoud Y.Mohammed X.Chen C.Combaret M.Gouzevitch G.Grenier I.Laktineh L.Mirabito K.Shchablo I.Bagaturia D.Lomidze I.Lomidze v.Bhatnagar R.Gupta P.Kumari J.Singh v.Amoozegar B.Boghrati M.Ebraimi R.Ghasemi M.Mohammadi Najafabadi E.Zareian M.Abbrescia R.Aly W.Elmetenawee N.De Filippis A.Gelmi G.Iaselli S.Leszki F.Loddo I.Margjeka G.Pugliese D.Ramos L.Benussi S.Bianco D.Piccolo S.Buontempo A.Di Crescenzo F.Fienga G.De Lellis L.Lista S.Meola P.Paolucci A.Braghieri P.Salvini P.Montagna C.Riccardi P.vitulo B.Francois T.J.Kim J.Park S.Y.Choi B.Hong K.S.Lee J.Goh H.Lee J.Eysermans C.Uribe Estrada I.Pedraza H.Castilla-valdez A.Sanchez-Hernandez C.A.Mondragon Herrera D.A.Perez Navarro G.A.Ayala Sanchez S.Carrillo E.vazquez A.Radi A.Ahmad I.Asghar H.Hoorani S.Muhammad M.A.Shah I.Crotty Department of Physics and Astronomy Ghent UniversityProeftuinstraat 869000 GhentBelgium Centro Brasileiro Pesquisas Fisicas R.Dr.Xavier Sigaud150-UrcaRio de JaneiroRJ 22290-180Brazil Dep.de Fisica Nuclear e Altas Energias Instituto de FisicaUniversidade do Estado do Rio de JaneiroRua Sao Francisco Xavier524BR-Rio de Janeiro 20559-900RJBrazil Bulgarian Academy of Sciences Inst.for Nucl.Res.and Nucl.EnergyTzarigradsko shaussee Boulevard 721784 SofiaBulgaria Faculty of Physics University of Sofia5 James Bourchier Boulevard1164 SofiaBulgaria School of Physics Peking UniversityBeijing 100871China Institute of High Energy Physics UCAS/CAS19(B)Yuquan RoadShijingshan DistrictBeijing 100049China Universidad de Los Andes Apartado Aereo 4976Carrera 1Eno.18A 10BogotaCOColombia Egyptian Network for High Energy Physics Academy of Scientific Research and Technology101 Kasr El-Einy St.CairoEgypt The British University in Egypt(BUE) P.O.Box 43Elsherouk CitySuez Desert RoadCairo 11837Egypt Suez University Elsalam CitySuez-Cairo RoadSuez 43522Egypt Department of Physics Faculty of ScienceBeni-Suef UniversityBeni-SuefEgypt Center for High Energy Physics Faculty of ScienceFayoum UniversityEl-Fayoum 63514Egypt Univ Lyon Univ Claude Bernard Lyon 1CNRS/IN2P3IP2I LyonUMR 582269622 VilleurbanneFrance Georgian Technical University 77 Kostava Str.Tbilisi 0175Georgia Department of Physics Panjab UniversityChandigarh 160014India School of Particles and Accelerators Institute for Research in Fundamental Sciences(IPM)P.O.Box 19395-5531TehranIran School of Engineering Damghan UniversityDamghan ***Iran INFN Sezione di BariVia Orabona 470126 BariItaly INFN Laboratori Nazionali di Frascati(LNF)Via Enrico Fermi 4000044 FrascatiItaly INFN Sezione di NapoliComplesso Univ.Monte S.AngeloVia Cintia80126 NaplesItaly INFN Sezione di PaviaVia Bassi 6PaviaItaly INFN Sezione di Pavia and University of PaviaVia Bassi 6PaviaItaly Hanyang University 222 Wangsimni-roSageun-dongSeongdong

Purpose To complement and ensure redundancy in the endcap muon system of the Compact Muon Solenoid(CMS)detector and to extend the Resistive Plate Chamber(RPC)system coverage,improved RPCs(iRPCs)with either orthogonal layer strips with one-end electronics or single layer strips with two-end electronics providing more precise time measurement will be installed in the very forward pseudorapidity region of|η|ver a bi-directional optical link with a line rate of 4.8 Gb/s between the Front-End Electronics(FEE)and the Back-End Electronics(BEE).To fulfill these requirements,a prototype BEE for the iRPC 2D chamber has been researched and *** A Micro-Telecommunication and Computing Architecture(μTCA)-based processing card was designed in this study to establish a prototype system together with aμTCA *** Giga-Bit Transceiver(GBT)protocol is integrated to provide bi-directional communication between the FEE and BEE.A server is connected with the BEE by a Gigabit Ethernet(GbE)link for SC and a 10-GbE link for Data AcQuisition(DAQ).Results The Bit Error Rate(BER)test of the back-end board and a joint test with the iRPC 2D prototype chamber were *** less than 1.331×10−16 was *** timemeasurement with a resolution of 3.05 nswas successfully realized,and detector efficiencies of 97.7%for longitudinal strips and 96.0%for orthogonal strips were *** results demonstrate the correctness and reliability of the prototype *** The BEE prototype satisfies the requirements for the iRPC 2D chamber,and it worked stably and reliably during a long-term joint test run.

关键词： CMS iRPC TTC SC BEE μTCA GBT DAQ

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

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

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：