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Композиційні в’яжучі та теплоізоляційні бетони на їх основі

Я. Б. Якимечко、Р. І. Семеген、Б. Б. Чеканський2015-01-01OpenAlex

На основі білого портландцементу розроблено та оптимізовано композиційне в’яжуче і отримано теплоізоляційний бетон на його основі. Встановлено, що найефективнішими є добавки на основі негашеного вапна та сульфатвмісного компонента. Досліджено фазовий склад продуктів гідратації та будівельно-технічні характеристики ком…

Environmental and Industrial SafetyMining and Gasification TechnologiesMagnesium Oxide Properties and Applications

锂离子电池复合正极材料Li_（3-2x）Mg_xV_2（PO_4）_3/C的合成及其电化学性能

尹武梅、张婷婷、朱庆 等 6 位作者2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

采用溶胶-凝胶法制备Li3-2xMgxV2（PO4）3/C（x=0、0.01、0.03、0.05）复合材料,并通过X射线衍射（XRD）、扫描电镜（SEM）和电化学测试等测试手段对合成材料进行表征。XRD结果表明：在Li3V2（PO4）3的锂位掺杂少量Mg2＋,并没有明显改变Li3V2（PO4）3晶体的单斜结构,但镁掺杂Li3V2（PO4）3的晶胞体积大于未掺杂Li3V2（PO4）3的晶胞体积。所有镁掺杂复合材料Li3-2xMgxV2（PO4）3/C（x=0.01、0.03、0.05）的电化学性能均优于Li3V2（PO4）3/C复合材料,其中,Li2.94Mg0.03V2（PO4）3/C在上述所有材料中具有最高的容量和最好的循环性能…

MXene and MAX Phase MaterialsAdvancements in Battery MaterialsAdvanced Battery Materials and Technologies

Enhanced photocurrent density in graphene/Si based solar cell (GSSC) by optimizing active layer thickness

Ahmad Rosikhin、Aulia Fikri Hidayat、Ibnu Syuhada 等 4 位作者2015-01-01AIP conference proceedings

Thickness dependent photocurrent density in active layer of graphene/Si based solar cell has been investigated via analytical – simulation study. This report is a preliminary comparison of experimental and analytical investigation of graphene/Si based solar cell. Graphene sheet was interfaced with Si thin film forming…

Silicon Nanostructures and PhotoluminescenceGraphene research and applicationsNanowire Synthesis and Applications

弱磁场对EP／MWCNTs-Fe3O4复合材料结构与性能的影响

周还潮、马传国、张晶晶2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

采用均匀沉淀法制备了多壁碳纳米管～四氧化三铁（MwcNTs-Fe3O4）复合粒子，并将复合粒子与环氧树脂（EP）复合，在弱磁场（0．2～0．3T）下固化制备了EP／MWCNTs-Fe3O4复合材料。采用x射线衍射仪、扫描电子显微镜和震动样品磁强计对复合粒子的结构和磁性能进行了表征，重点考察了弱磁场对该复合材料结构、电性能与压缩性能的影响。结果表明，复合粒子表现出顺磁性，其中Fe3O4和MWCNTs彼此相对独立，能够较均匀地分散在EP中；在外磁场作用下，复合粒子在EP中的分布表现为磁流体的特征，沿磁场方向定向排列形成链状结构；随复合粒子含量增加，复合材料的介电常数、导电性和压缩强度总体上呈上升趋势，压缩弹性模量先升高后降低；磁场诱导…

Magnetic Properties and Synthesis of FerritesIron oxide chemistry and applicationsElectromagnetic wave absorption materials

Al/Pb/α-PbO_2复合惰性阳极材料的电化学合成

胡钢、徐瑞东、何世伟 等 7 位作者2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

利用恒电流从碱性镀液中在Al/Pb表面电化学合成α-PbO 2沉积层,制备出Al/Pb/α-PbO 2复合惰性阳极材料。通过阳极极化法考察α-PbO 2镀液组成及镀液温度对在Al/Pb表面电化学合成α-PbO 2的影响,采用XRD和SEM分别测试Al/Pb基体材料及α-Pb O2沉积层的相结构和表面微观组织特征。结果表明：α-PbO 2的电化学合成分由几个不同的步骤完成;适宜的条件能有效提高α-Pb O2电化学合成速率并避免析氧副反应的发生;从碱性溶液中合成的α-Pb O2具有斜方晶型结构,沉积层由发育良好的圆球形晶胞构成。

Anodic Oxide Films and NanostructuresElectronic and Structural Properties of OxidesGas Sensing Nanomaterials and Sensors

2,5-己二酮对PC12细胞凋亡和线粒体膜电位的影响

李双月、戚媛、王哲敏 等 5 位作者2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

[目的]探讨2,5-己二酮（HD）对PC12细胞的毒性作用及可能机制。[方法]分别用5、10、20 mmol/L HD处理PC12细胞24 h,用未暴露HD的细胞作为正常对照组。分别用乳酸脱氢酶法检测细胞存活率,苏木素-伊红染色检测细胞形态学变化,Hochest33258染色和Annexin V-FITC/PI双染流式检测细胞凋亡,JC-1染色检测线粒体膜电位。[结果]5、10、20 mmol/L HD暴露使PC12细胞的存活率下降,仅分别为对照组的92.23%、86.40%、63.72%（均P〈0.05）,细胞丧失正常形态,界限模糊,细胞数量明显减少。Hochest33258染色显示,HD暴露使细胞核固缩浓染,发出较强蓝色荧光,…

Advanced Nanomaterials in CatalysisComputational Drug Discovery MethodsElectrochemical Analysis and Applications

Charge-induced plasmonic shifts in extinction spectra of gold nanostructures

Weitong Fu2015-01-01DR-NTU (Nanyang Technological University)

Recently, the phenomenon of Surface Plasmon Resonance (SPR) has been investigated extensively especially due to its promising potential in the field of biosensing. SPR has applications in SPR based biosensor which can precisely detect the attachment of specific type of biomolecules to glass surface, for example to det…

Gold and Silver Nanoparticles Synthesis and Applications

KOSTEN UND NUTZEN DER REDUKTION VON EMISSIONEN VON AMMONIAK UND PARTIKELN IN DER TIERHALTUNG IN NIEDERSACHSEN

S. Wagner、Elisabeth Angenendt、Olga Beletskaya 等 8 位作者2015-01-01AgEcon Search (University of Minnesota, USA)

Diese Studie analysierte die Potentiale und Kosten von Reduktionsmaßnahmen für Ammoniak und Partikel in der Tierhaltung mit einem ökonomisch-ökologischen Betriebsmodell und deren monetären Nutzen für Gesundheit und Biodiversität mit einem integrierten Umweltbewertungsmodell. Der Nutzen von ein- und dreistufigen Abluft…

Metallurgy and Material ScienceAnimal Behavior and Welfare StudiesAgriculture Sustainability and Environmental Impact

1D-π-A型偶氮苯衍生物合成、表征及其光致变色性能

宋秀美、冯宗财、汪朝阳 等 6 位作者2015-01-01功能材料

以4-氨基硝基苯为起始原料,通过溴代、重氮去氨基、硝基还原制备出重要中间体3,5-二溴苯胺,再以3,5-二溴苯胺和3-溴苯胺分别与苯酚衍生物进行重氮偶合反应,合成了10个D-π-A 型偶氮苯衍生物,利用FTGIR、NMR、ESIGMS、元素分析和XG单晶衍射等表征方法,确定目标化合物结构,并通过UV-Vis光谱研究了系列目标化合物光致变色性能,测定其光致顺反异构速率常数.研究结果表明,目标化合物表现出显著光致变色性能,顺反异构转变速率常数数量级为10^-2-10^-3s^-1,异构转变速率快慢主要取决于化合物分子的取代基空间位阻大小.

Photochemistry and Electron Transfer StudiesLuminescence and Fluorescent MaterialsPhotochromic and Fluorescence Chemistry

Analysis of the Influence of Deposition Conditions on the Structure of the Coating Nb-Al-N

В. И. Иващенко、Pavlo Skrynskiy、Владислав Николаевич Рогоз 等 5 位作者2015-01-01Electronic Sumy State University Institutional Repository (Sumy State University)

Nanocomposite Nb-Al-N films prepared by magnetron sputtering have been studied. It has been found that, in the films, there are two stable crystalline structural states, namely, NbNz and B1-Nb1 – xAlxNyO1 – y, and an amorphous like component related to aluminum oxynitride upon reactive magnetron sputtering. The substr…

Diamond and Carbon-based Materials ResearchMetal and Thin Film MechanicsGaN-based semiconductor devices and materials

白光LED用(Y_x Gd_(1 -x)) (P,W) O_4:Eu红色荧光粉的发光性能研究

Bo Li、王育华、沈雷军 等 6 位作者2015-01-01Lanzhou University Institutional Repository

采用高温固相方法合成了(Y_xGd_(1 - x)) (P_(0.5)W_(0.5)) O_4:Eu_(0.15)粉末状发光材料,经X衍射分析结构发现,当Y~(3 +) /Gd~(3 +) ≤3∶ 7时,样品主要由Gd_2WO_6相和GdPO_4相组成,当Y~(3 +) /Gd~(3 +)接近或等于1∶ 1时,合成的样品由Gd_2WO_6相、GdPO_4相和Gd_(0.5)Y_(0.5) PO_4相三相组成,当Y~(3 +) / Gd~(3 +) ≥7∶ 3时,合成的样品由Gd_2WO_6相与Gd_(0.5)Y_(0.5) PO_4相组成。研究了样品在蓝光激发下的光谱性质,讨论了Y~(3 +) /Gd~(3 +)的掺杂对材料发光性…

Luminescence Properties of Advanced MaterialsGas Sensing Nanomaterials and Sensors

十二烷基苯磺酸钠/聚氧乙烯（23）月桂醚复配体系性能的研究

贺国旭、王耀先、李松田 等 5 位作者2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

在35℃时通过表面张力法研究了阴离子表面活性剂十二烷基苯磺酸钠（SDBS）和非离子表面活性剂聚氧乙烯（23）月桂醚（Brij35）复配体系在不同配比下的临界胶束浓度（CMC）和降低表面张力效率方面的作用。结果表明：SDBS和Brij35的物质的量比为3∶7时,降低表面张力的效率最高,其CMC为0.2 mmol/L,明显低于单一组分;并在总物质的量浓度一定时,测定了复配体系的稳定性和润湿性。

Surface Modification and SuperhydrophobicityNanomaterials and Printing TechnologiesAerogels and thermal insulation

富锂锰基材料Li1.35[Ni0.35Mn0.65]O2＋y的合成与电化学性能研究

周春仙、廖达前、习小明 等 6 位作者2015-01-01矿冶工程

将化学计量比的前驱体Ni0.35Mn0.65（OH）2与Li2CO3均匀混合,采用不同高温段温度合成Li1.35[Ni0.35Mn0.65]O2＋y富锂锰基正极材料。对合成的材料进行表征,结果表明：所合成的Li1.35[Ni0.35Mn0.65]O2＋y正极材料为均匀的类球形,单颗粒大小均匀;XRD图谱显示材料为层状的α-Na Fe O2结构。将材料组装成CR2016扣式电池,采用蓝电测试仪以12.5 m A/g的电流密度进行充放电测试,2.0~4.8 V之间,最高初始放电比容量为198.0 m Ah/g,首次放电效率为69.7%。

Supercapacitor Materials and FabricationAdvancements in Battery MaterialsTransition Metal Oxide Nanomaterials

Hydrogel formulation of Cs-absorbent and laxative drugs for enhancement of decorporation rate of internally contaminated radiocesium

Hiroshi Ishihara、Izumi Tanaka、Haruko Yakumaru 等 5 位作者2015-01-01Institutional Repositories DataBase (IRDB)

Clinical decorporation procedure using Radiogardase to decrease body-burden of radiocesium caused by to the internal contamination accidents has been established in the last century. We aimed to improve the decorporation treatment to minimize stress of patients as the current tendency. The effects of several drugs wer…

Lanthanide and Transition Metal ComplexesRadioactive element chemistry and processingChemical Synthesis and Characterization

Анализ специфических условий эксплуатации мало-размерных дизелей спасательных шлюпок

Aydemir Sultanbegovich Dadilov2015-01-01Современные проблемы науки и образования

The analysis of the operating conditions of small diesel engines lifeboats. The primary purpose of the lifeboats is saving lives during accidents and disasters at sea. The effectiveness of the commissioning and operation of the diesel lifeboats ultimately depends on the outcome of the rescue operation. Their engines s…

Material Properties and ApplicationsTechnical Engine Diagnostics and Monitoring

THE INFLUENCE OF CHAIN EXTENDER TYPE ON PHYSICAL PROPERTIES OF AQUEOUS POLYURETHANE DISPERSIONS

I Zargar Lellahi、Manouchehr Khorasani、Ali Asghar Sabbagh Alvani 等 4 位作者2015-01-01Journal of Color Science and Technology

In this study, an aqueous polyurethane dispersion based on polyester was synthesized. Fourier Transform Infrared Spectroscopy was used to monitor the end point of the polymerization. In addition, the effects of two different chain extenders were studied on the average molecular weight advancement by using gel permeati…

Polymer composites and self-healingPhotopolymerization techniques and applications

SYNTHESIS OF SILVER NANOPARTICLES (AG NPS) VIA FOUR KINDS OF PLANTS EXTRACT AND INVESTIGATION OF ANTIMICROBIAL ACTIVITY OF THESE NANOPARTICLES

Tara Moadi、Ramin Ghahremanzadeh、Yosefi Maryam 等 4 位作者2015-01-01OpenAlex

The present study was based on an economical, eco-friendly, and efficient method for the green synthesis of silver nanoparticles in plant extract. This synthesis shows attractive characteristics such as; the use of inexpensive and available plant extracts, non-toxicity, eco-friendly biological materials, and operation…

Nanoparticles: synthesis and applicationsMoringa oleifera research and applications

PVDF/SiO2/PA中空纤维纳滤复合膜研究

孙文挺、梁义、胡晓宇 等 5 位作者2015-01-01天津科技

以十六烷基四甲基溴化铵（CTAB）为模板,去离子水为共溶剂,正硅酸乙酯（TEOS）为硅源,酸性条件下,在熔融纺丝法聚偏氟乙烯（PVDF）中空纤维膜表面合成介孔二氧化硅（SiO2）功能层,以均苯三甲酰氯（TMC）为油相单体、哌嗪（PIP）为水相单体,通过界面聚合在介孔SiO2功能层表面形成聚酰胺（PA）功能层,制备了PVDF/SiO2/PA中空纤维纳滤复合膜.采用SEM、XRD、FTIR 等方法对复合膜进行了表征,探讨了水相PIP 浓度对复合膜性能的影响.0.5,MPa 下以2,g/L MgSO4 溶液为测试液,所得中空纤维纳滤复合膜的截留率达到95.0%,,水通量可达21.8,L·m^-2·h^-1.

Aerogels and thermal insulationSurface Modification and SuperhydrophobicityAdsorption, diffusion, and thermodynamic properties of materials