Materials Literature
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The current distributions over carbon steel under iron red alkyd primer exposed to 3.5% sodium chloride solution were mapped using the wire beam electrode(WBE). The electrochemical impedance spectroscopy(EIS) of the WBE was carried out to analyze the performance of coating delamination and corrosion behavior of carbon…
在这研究，硅底层上的秩序井然的金 nanoparticle 数组作为为检测玫瑰精散布底层的积极提高表面的拉曼被采用 B (RB ) ，和散布的提高表面的拉曼(重量的单位) 上的 RB 形态学的影响性质被讨论。Au nanoparticle 数组被使用有图案的 P4VP nanodomains 准备 poly (styrene-b-4-vinylpyridine )(PS-b-P4VP ) diblock 共聚物是的薄电影是一条简单、节俭的途径的 nanoreactors。结果证明 Au nanopaticle 数组上的 RB 的拉曼系列由检测一样的 RB 答案在赤裸的硅底层上比那些有许多更强壮的紧张。它显示硅底层上的准备 Au n…
2 Ti 2 O 7 由红外线并且拉曼系列和磁化大小被调查。与温度弄软减少的异常声子在父母被发现并且冲淡除了之外，做的混合物，和 Y 能放松弄软声子 233 附近的红外模式 ? 厘米 显示在纺纱冰材料联合的强壮的 phononphonon 的 1 , 。当冲淡的水平不很高时，磁化大小表明无磁性的杂质严重地不处于扎根的状态影响纺纱冰规则。然而，大量冲淡提高混乱并且因为集体旋转扭动簇不再是可得到的，打破纺纱冰状态。
The hybrid micelles of polystyrene-b-poly((N-isopropyl acrylamide)-co-(4-vinylbenzyl chloride)) block copolymer(PS-b-P(NIPAM-co-VBC)) with Prussian blue(PB) in the corona were prepared by reaction of pentacyano(4-(dimethylamino)-pyridine)ferrate(Fe-DMAP)-attached PS-b-P(NIPAM-co-VBC) with Fe Cl3. The formation of the…
丙氨酸脱氢酶可逆催化丙氨酸脱氨生成丙酮酸,在氨基酸和酮酸的合成及代谢中至关重要.本研究通过PCR从巨大芽孢杆菌WSH-002中克隆并构建了丙氨酸脱氢酶基因（aldBM066）的原核表达载体,经原核表达后,采用Ni-NTA亲和层析法和阴离子交换色谱法纯化获得蛋白AldBM066,在289 K下以座滴法进行晶体生长条件筛选和制备.通过对蛋白质结晶条件的筛选,最终在蛋白质浓度为15 mg/mL及含有0.1 mol/L乙酸钠（p H 5.0）和2.4 mol/L甲酸钠的缓冲液中获得了理想的蛋白质晶体,晶体大小约为210μm×180μm×150μm,X-射线衍射数据显示,该蛋白质晶体衍射分辨率为2.88,空间群为三方晶系,晶胞参数为a=b…
A rigid supramolecular polymer was constructed in aqueous solution via cucurbit[8]uril(CB[8]) host recognition with a rigid monomer containing an azobenzene unit and two 4,4’-bipyridin-1-ium(BP)moieties in the two ends, which also exhibited photo-responsiveness owing to the photoinduced trans–cis isomerization of azob…
Electromagnetic suspension(EMS)systems are unstable open-loop,strongly nonlinear systems.The suspension accuracy of EMS systems for machine tools is improved by integrating the feedback linearization method with a disturbance observer(DOB)to precisely linearize the EMS system.The feedback linearization error is analyz…
以1,4-二氯甲氧基丁烷为氯甲基化试剂,制备了氯甲基化聚苯乙烯（CMPS）,使CMPS的氯甲基与对羟基苯甲醛（HBA）发生亲核取代反应,将苯甲醛（BA）键合在聚苯乙烯侧链,制得改性聚苯乙烯PS-BA;使PS-BA的醛基与3-氨基吡啶（AP）的伯氨基发生席夫碱反应,在聚苯乙烯侧链合成与键合了双齿席夫碱（SB）配基,制得了侧链键合有双齿席夫碱配基的功能化聚苯乙烯PS-SB。采用红外光谱（FTIR）和核磁共振氢谱（1H NMR）对其结构进行了表征。以大分子PS-SB为第一配体,以邻菲罗啉（Phen）为第二配体,与Eu（Ⅲ）离子配位,分别制得了二元和三元高分子-稀土配合物PS-（SB）3-Eu（Ⅲ）和PS-（SB）3-Eu（Ⅲ）-（Phe…
A novel method was presented for synthesis of ZnO and ZnO–CuO composites in the form of nanowires,nanorods and nanoflakes on oxidized silicon substrates. Further, the use of the synthesized nanostructures for gas sensing was demonstrated. Pure brass(Cu0.65–Zn0.35) films were deposited on oxidized Si substrate by radio…
Star-branched polyamide 6 was prepared via anionic ring-opening polymerization of e-caprolactam in the presence of a simple benzene-centered trifunctional activator of N,N’,N’’-trimesoyltricaprolactam. A high polymer yields of above 95% were achieved at 160 8C for 15 min utilizing e-caprolactam magnesium bromide as a…
Two cold rolled hot-dip galvanizing dual phase(DP) 450 steels with different amounts of chromium were designed and the effects of the chromium concentration and galvanizing processes on the microstructure and mechanical properties were also investigated. The results show that the experimental steels exhibit typical du…
The ac conduction mechanism in copper oxide nanoparticles with 8 nm size, synthesized by a precipitation method was studied by analyzing ac conductivity in the frequency range of 50 Hz–1 MHz and in the temperature range of 373–573 K. X-ray diffraction and transmission electron microscopy(TEM) were employed for the str…
Modern drying technology was used to explore suitable drying process to provide scientific basis for improving drying processing methods of Scrophulariae Radix. Controlled temperature and humidity drying,vacuum drying apparatus,microwave vacuum drying apparatus,short infrared drying device were used to gain samples fo…
Composite materials reinforced with carbon nanotubes were mechanical tested using Arcan test rig under Mode-I, Mode-II and mixed mode loading conditions to obtain their fracture properties. The butterfly composite specimens were fabricated with 0.02, 0.05 and 0. I wt % CNTs. The polyester/CNT composite was fabricated…
Porous materials have been intensively applied in fields of ion exchange, adsorption and separation, host-guest chemistry, etc. The development of porous materials has fundamental and practical significance. Based on the component and constructing bond of porous materials, they include zeolite, mesoporous materials, m…
调节尺寸，形状，作文和表面的能力性质为简历申请与需要的功能给予 nanoparticles。这篇文章在金属的探索加亮一些最近的例子(例如，黄金和银) nanoparticles，特别那些与磁性和结合简历的结构， theranostic nanoprobes。如此的 nanoprobes 展览为信号扩大的悦耳的光、分光镜、磁性、电的性质。在提高 nanoproble 的比色的察觉和表面的这个文章愿望焦点讨论的例子提高了散布的拉曼(重量的单位) 象蛋白质和 DNA 那样的 biomarkers 或 biomolecules 的察觉。控制 biomolecular 相互作用的因素的理解为有 theranostic 功能的重量的单位 na…
癌症外科仍然是癌症治疗的基础并且为癌症的最有效的途径之一治好。典型地，癌症外科的主要目标是由移开所有癌的纸巾治好癌症，它被沿着包围移开癌症通常完成健康的(非癌)保证完全的癌症删除的织物，即，在在肺癌症外科的乳癌外科以及叶切除术和肺切除术的乳房切除术和 lumpectomy 。然而，例外确实存在。在 glioblastoma multiforme (GBM ) 的情况中，外科医生面对 dilemmathey 没有奢侈，想要移开所有病了的织物移开肿瘤邻近的正常织物(那能起一个关键功能的作用) 。最近， Kircher 组[1 ] 在纪念的斯洛恩·凯特林癌症，中心开发了一台手持的拉曼扫描仪 intraoperatively 识别散布的提…
Silicide coatings on Nb/NbCr2 alloy were prepared by pack cementation method. The oxidation behavior of the bare- and coated- alloy was examined by isothermal test at 1250 ℃ in static air.The results show that the silicide coatings are composed of(Nb, Cr)Si2and(Cr, Nb)Si2phases. There exist a transitional layer of(Nb,…
An artificial neural network （ANN） constitutive model and Johnson-Cook （J-C） model were developed for 7017 aluminium alloy based on high strain rate data generated from split Hopkinson pressure bar （SHPB） experiments at various temperatures. A neural network configuration consists of both training and validation, whic…
由纯 Ti 层和 TiBw/Ti 合成的层组成的新奇把压成薄片的 Ti-TiBw/Ti composites 被反应的热压成功地制作了。此处，二规模的结构形成了：纯 Ti 层和 TiBw/Ti 合成的层一起在宏规模构造了把压成薄片的结构。而且， TiBw 加强在 Ti 粒子附近被散布然后在微规模在 TiBw/Ti 合成的层形成了网络微观结构。把压成薄片的 Ti-TiBw/Ti composites 与网络相比在韧性与纯 Ti，和进一步的改进相比由于二规模的结构揭示高力量和高延伸的优异联合结构化的 composites。而且，把压成薄片的 composites 的有弹性的模量能被 H-S 上面的界限预言，它与试验性的价值一致。