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Trace analysis of mefenamic acid in human serum and pharmaceutical wastewater samples after pre-concentration with Ni-Al layered double hydroxide nano-particles

Hossein Hossein、Abdolmohammad-Zadeh、Fatemeh 等 6 位作者2014-01-01药物分析学报:英文版

In this work,the nickel-aluminum layered double hydroxide(Ni-Al LDH) with nitrate interlayer anion was synthesized and used as a solid phase extraction sorbenl for the selective separation and pre-concentration of mefenamic acid prior to quantification by UV detection at λmax=286 nm.Extraction procedure is based on th…

Analytical chemistry methods developmentLuminescence and Fluorescent MaterialsAnalytical Chemistry and Sensors

Orientation variation along growth direction of millimeter free-standing CVD diamond thinned by mechanical grinding

Xing-kai、Wen、Junjun 等 12 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

有 DC 弧血浆喷气准备的毫米厚度的一部自立的钻石电影被机械磨擦连续地变瘦。有不同厚度的钻石电影的取向和质量被 X 光检查衍射和拉曼光谱学分别地描绘。结果在起始的生长阶段期间显示出随机的谷物取向分布。作为电影厚度增加,钻石电影的比较喜欢的取向变化从(111 ) 到(220 ) ,由于竞争生长机制。在成核阶段期间产生的 Twinning 看起来沿着 110 方向稳定优先的生长。interplanar 间距(220 ) 当电影厚度增加,飞机被扩大,它被 non-diamond-phase 碳和杂质的增加在周期的气体下面引起。另外,钻石电影的质量恰好在生长过程期间被降级。而且,山峰移动沿着电影生长方向表明应力的一个重要不同类,它源于竞争…

Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchAdvanced Surface Polishing Techniques

Microstructure, Microsegregation, and Mechanical Properties of Directional Solidified Mg–3.0Nd–1.5Gd Alloy

Shaojun、Liu .、Guangyu 等 6 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

1 和第二等的树突武装间距 2 被发现被取决于在形式的冷却的率 R 1 ?=?8.0415?汰獵????猯扵?渠湡獯牴'壮肭??????????????丠????控慬獳???汰獵瀭畬?? ̄′?猯'T嬾敆??猼'T挠慬獳???汰獵瀭畬?? ̄′?猯'T????汣獡??愠瀭畬?汰獵??㈠???? ̄?????汣獡??愠瀭畬?汰獵??㈠?猯'T崾??

Magnesium Alloys: Properties and ApplicationsHydrogen Storage and MaterialsMagnetic Properties of Alloys

Spin coating of UV-curable resist for imprinting long-wave infrared subwavelength structures

Wang Zhi-ju2014-01-01Optics and Precision Engineering

The ultraviolet-curing imprinting resist on Si substrates was explored by spin coating method,and the long wave subwavelength structures were imprinted.The surface topography of the coated resist layers was observed by a Laser Scanning Co-focal Microscope(LSCM),and their surface roughnesses(Ra)were tested.The thicknes…

Optical Coatings and GratingsFluid Dynamics and Thin FilmsNanofabrication and Lithography Techniques

Effect of Accelerated Xenon Lamp Aging on the Mechanical Properties and Structure of Thermoplastic Polyurethane for Stratospheric Airship Envelope

Liu、Yuyan、Yuxi 等 6 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

这研究试图在 TPU 电影的 photoaging 行为上调查人工的捱过的测试的效果。在机械性质,形态学和化学结构的变化被张力的测试学习,扫描电子显微镜学,原子力量显微镜学,转变 Fourier 红外线,并且 X 光检查光电子光谱学。结果证明 photoaging 否定地在 TPU 电影的裂缝价值影响起始的模量和压力。暴露于照耀的标本的表面变得不平,并且一些可见例如水泡和虚空微缺点能被检测。破裂表面的形态学说明那照耀减少粘性,但是增加 TPU 电影的易碎物。加速的年老的电影的化学结构分析证明在 TPU 电影的化学结构的变化发生。照耀可以在标本的表面上打破长分子的链并且形成低分子的重量包含氧的组。链切断的数字随暴露时间的增加增加。

Spaceflight effects on biologySilicone and Siloxane ChemistryAerospace Engineering and Energy Systems

Design and Analysis of a Nano Horn Antenna for Harnessing Solar Energy

Sumukha Prasad.U、Prithvi Shankar.N2014-01-01OpenAlex

Presented in this paper is a concept and design of a Nano horn antenna for harnessing of NIR, with a good return loss and directivity over the range of 200 to 300 THz. A combination of horn and nano antenna were considered for the design of NIR capturing system. Some of the key issues that need to be considered to ens…

Metamaterials and Metasurfaces ApplicationsEnergy Harvesting in Wireless NetworksThermal Radiation and Cooling Technologies

Entrapment and Sustained Release of Hydrophobic Drugs with Different Molecular Weights from PHBHHx-PEG Nanoparticles

Fan Fa2014-01-01中国生物医学工程学报:英文版

Biodegradable polymeric nanoparticles are more and more frequently used in drug delivery systems, which represent one of the most rapidly developing areas.Inourpreviousstudy,a novelnaturalhybrid polyester,polyethylene glycol 200 (PEG200) end-capped poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx-PEG) was direct…

Hydrogels: synthesis, properties, applicationsbiodegradable polymer synthesis and propertiesGraphene and Nanomaterials Applications

Evolution of the Raman spectrum of graphene grown on copper upon oxidation of the substrate

XiuliYin、Yi-Lei、Li 等 17 位作者2014-01-01纳米研究:英文版

在在一部铜电影上种的单个层的 graphene 的拉曼光谱的重要变化在发生在周围的条件下面的内在的底层的自发的氧化以后被观察。graphene G 和 2D 拉曼模式的频率被发现经历红移动,当二个乐队的紧张由超过一个数量级变化时。为了理解这些的起源,完成,我们进一步由扫描通道描绘了样品显微镜学(STM ) ,扫描通道光谱学(圣) ,和原子力量显微镜学(AFM ) 。没有破坏 graphene overlayer 的水晶的顺序或改变做水平的搬运人,底层的氧化在底层生产了可估计的折皱。我们以 graphene 层的折皱导致的张力的紧张解释拉曼频率的红移动。在有氧化的拉曼紧张的变化从对在散布过程的拉曼结合 graphene 层的光的效率…

Graphene research and applicationsAdvanced Memory and Neural ComputingSilicon Nanostructures and Photoluminescence

Analysis of Surface Oxide Films Formed in Hydrogenated Primary Water on Alloy 690TT Samples With Different Surface States

Zhiming、Zhang、Jianqiu 等 8 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

, 。与不同表面状态在样品上种的氧化物电影用各种各样的技术被分析。结果证明三元组分层的结构在沉浸以后被形成:与在 Fe 和 Ni 的大散布氧化物粒子富人一起的最外面的层,与在为地面的 Cr 和 Fe 的小紧缩的氧化物粒子富人一起的中间的层出现并且在为擦亮的表面的 Ni 的松开的像针的氧化物富人,和有连续 Cr 富有的氧化物的内部层。表面状态被发现影响不仅表面形态学,而且腐蚀率。磨擦加速了保护的氧化物电影的生长以便扎根的样品比擦亮的显示出更低的氧化率。地面合金 690TT 的样品显示出优异抵抗到 intergranular 攻击(IGA ) 。

Metal and Thin Film MechanicsHigh-Temperature Coating BehaviorsNuclear Materials and Properties

Morphology evolution and crystallographic feature of Nb nanowire in an in-situ NiTi-Nb nanocomposite

Zhen-yang、Liu、Fang-Min 等 8 位作者2014-01-01稀有金属:英文版

在原处, NiTi 形状记忆 alloyNb nanowire nanocomposite 被揭示展出非凡的机械性质。高力量和极端大的有弹性的紧张的性质仔细与高效被联系在形成 situ 的 Nb nanowire 加强。在这研究,形态学进化和在在寒冷期间的 NiTi 形状记忆合金矩阵的 Nb nanowires 的结晶的特征绘画借助于传播电子显微镜学(TEM ) 被调查。由于变硬的严重工作和 NiTi 矩阵的 amorphization, nanowire 加强的冷工作减小能超过的,这被揭示全部合成。不规则形状的 Nb nanowires 在冷绘画过程期间被重塑到直、光滑的 nanowires。借助于 TEM nanobeam 衍…

Shape Memory Alloy Transformations

Mechanism of Gravity Effect on Solidification Microstructure of Eutectic Alloy

Nan-nan、Zhang、Xinghong 等 8 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

Ni 最容易溶解的合金被使用一个 50-m-long 落下试管调查。以不同生长率,平均内部杆的间距比在正常严肃(1g ) 下面的那些在 microgravity (g) 下面总是是更大的,这被发现。而且与增加生长率, 1g 样品和 g 样品之间的间距差别日益增多地减少了。基于试验性的结果和分析,一个物理模型被建议在最容易溶解的合金的团结过程上描述严肃的效果。

Solidification and crystal growth phenomenaMetallurgical Processes and Thermodynamics

Synthesis of ZrC Nanoparticles in the ZrO2–Mg–C–Fe System Through Mechanically Activated Self-Propagating High-Temperature Synthesis

Abdollah、Hajalilou、Mansor 等 13 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

2 /ZC/Mg/Fe 与自我繁殖的燃烧( SHS )反应了在 870 点的模式?敨挠牯楴潳?敬敶獬椠?片畯??㈠???愠摮?瀠瑡敩瑮?敷敲?祝????蒠鞪??鞬???愀獳∽?汰獵瀭畬??????吠敨戠潲据潨楤慬潴獲眠牥?摡業楮瑳牥摥椠??慲摮浯獩摥眠祡愠?慳浬瑥牥汯??摮???偁?硥整獮潩?楴敭椠?慰播??蘀?蘀??

Hydrogen Storage and MaterialsIntermetallics and Advanced Alloy PropertiesMXene and MAX Phase Materials

Effect of Additives Mn(NO_3)_2 and/or Na_2MoO_4on Micromorphology and Corrosion Performance of Phosphate Coating on AZ31B Magnesium Alloy

Cui Xueju2014-01-01Zhongguo fushi yu fanghu xuebao

A phosphate coating was prepared on AZ31 B Mg alloy by chemical conversion process in a phosphorizing bath with additives Mn(NO3)2and/or Na2MoO4, respectively. The effect of the additives on surface micromorphology and corrosion performance of the coatings were investigated by scanning electron microscope(SEM), electr…

Magnesium Alloys: Properties and ApplicationsHydrogen Storage and Materials

Tetraphenylethene End-capped Polyethylenimine Fluorescent Nanoparticles for Cell Imaging

Xi-qi、Zhang、Xiaoyong 等 6 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

1 H-NMR , 13 C-NMR ,胶化浸透层析,紫外吸收系列,荧光系列, Fourier 变换红外线的光谱学,尺寸分发和希腊语的第六个字母潜力测量,和传播电子显微镜学。TPE-PEI FON 的 Biocompatibility 评估和房间成像进一步被探索。我们证明如此的 FON 显示出强烈荧光,球形的形态学和优秀 biocompatibility,为房间成像申请使他们很合适。

Conducting polymers and applicationsPhotochromic and Fluorescence ChemistryPolydiacetylene-based materials and applications

In(OTf)3 as a powerful and recyclable catalyst for Pechmann condensation without solvent

Bahador、Karami、Mahtab 等 7 位作者2014-01-01催化学报

在没有溶剂的条件下面与 -ketoesters 在酚的 Pechmann 冷凝作用起路易斯酸催化剂的作用给香豆素衍生物。这个新奇、便宜的方法有象短反应时间那样的优点,优秀产品让步,并且避免与绿化学原则一致的器官的溶剂的使用。催化剂装载能象 1 mol% 一样低在 80 °C 给相应香豆素的高收益。催化剂能在反应以后被恢复,并且在收益与仅仅细微减少再使用。

Mesoporous Materials and CatalysisChemical Synthesis and Reactions

The experimental study spectral characteristics between photon orbital angular momentum and thiamphenicol and C_32 carbamazepine

Jin He Shi2014-01-01OpenAlex

We experimentally demonstrate for the first time that photon with momentum and angular momentum can be affected the materials. The effect of the spectral properties of light is shown by a comparison of the photon with momentum and angular momentum interacted with thiamphenicol and C_32 carbamazepine. Using spectroscop…

Gold and Silver Nanoparticles Synthesis and ApplicationsOrbital Angular Momentum in OpticsPhotoreceptor and optogenetics research

Effect of hot rolling on the microstructure and impact absorbed energy of the strip steel by CSP

Jingjing Jingjing、Yang、Run 等 10 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

微观结构和影响在各种各样的温度吸收了精力为钢脱衣被调查热滚动了到 95.5% , 96.0% , 96.5% , 97.0% ,和 97.5% 的厚度减小。结果显示那谷物精炼能随热滚动减小的增加被认识到。而且,更好猛抛能从 95.5% ~ 97.0% 随热滚动减小的增加被完成。影响为钢脱衣与减少专心于精力减少严峻的温度热在厚度滚动了到 95.5% , 96.0% ,和 96.5% 减小。然而,在钢的情况中脱衣热在厚度滚动了到 97.0% 和 97.5% 减小,吸收精力仍然是的影响与在严峻的温度的减少几乎经常。

Microstructure and Mechanical Properties of SteelsMetallurgy and Material FormingMetal Alloys Wear and Properties

Fabrication of Z-type barium ferrite/silica composites with enhanced microwave absorption

Shen Jun2014-01-01OpenAlex

The Z-type barium ferrite/silica composites(Z-BCF/SiO2)were fabricated by in situ chemical synthesis method.The composition,structure,morphology and magnetic behavior of the composites were characterized by chemical analysis,IR,XRD,SEM,TEM and VSM.The results indicated that there were some interactions between two com…

Magnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materialsFiber-reinforced polymer composites

Facile Fabrication of Platinum Nanoparticles Supported on Nitrogen-doped Carbon Nanotubes and Their Catalytic Activity

Lingling、Wang、Long 等 9 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

在温和状况下面的一个灵巧的受精方法在做氮的碳 nanotubes (CN x ) 上与 47 nm 的一种狭窄的尺寸为高度驱散的磅 nanoparticles 的合成被设计。CN x 不需要任何东西预先出现修正由于固有的化学活动。Pt/CN x 的结构和自然被 X 光检查衍射描绘,扫描电子显微镜学,传播电子显微镜学和精力散光谱学光谱。所有试验性的结果表明在 CN x 的大量做的氮原子为捕获磅(IV ) 是几乎有效的离子。改进表面氮功能和 hydrophilicity 在 CN x 表面上贡献了磅 nanoparticles 的好分散和固定。Pt/CN x 在 allyl 酒精的加氢用作活跃、可重用的催化剂。这能被归因于在磅和支持之…

Carbon Nanotubes in CompositesNanomaterials for catalytic reactions

Mechanism Studies on Adsorption of DNA Bases and Base Pair-Zn~(2+) Complexes for CO_2,N_2 and H_2

Shi Shua2014-01-01OpenAlex

As an intriguing material building block for microporous metal-organic framework(MOF)materials,DNA base(pair) holds usually rigid-ring structures,multiple metal coordination sites,biological compatibility,and molecular recognition as well as self-assembling characteristics that could ultimately translate into interest…

Metal-Organic Frameworks: Synthesis and ApplicationsCrystallography and molecular interactionsSupramolecular Self-Assembly in Materials