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Application of Nano Coating (SiO2) on Textile Products 纳米涂层(SiO2)在纺织产品上的应用
Pub Date : 2017-02-28 DOI: 10.17265/1934-7375/2017.02.008
O. Dogan, R. Dag
Liquid SiO2 solutions produced by silicon-based nanopowder are covered on the fabric surface by using spray method. Fabric surfaces were coated at the room temperature in air with the different spray nozzles. Surface analysis of the coated fabric was performed by using Contact Angle and SEM pictures. According to the Contact Angles measurements, the coated fabric surfaces showed hydrophobic character between 126 and 146 degrees, and the SiO2 particles sticked to the fabric fibers as seen from SEM picture.
将硅基纳米粉体制备的液态SiO2溶液用喷雾法覆盖在织物表面。织物表面在室温下用不同的喷嘴在空气中喷涂。利用接触角和扫描电镜对涂层织物进行了表面分析。根据接触角测量,涂层织物表面在126 ~ 146度范围内表现出疏水性,并且从SEM图中可以看出SiO2颗粒粘附在织物纤维上。
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引用次数: 2
The New Approach of Expansion Baldwin-Aibassov’s Rules for Ring-Closing Reaction for d- and f-elements Periodic Table of Elements 元素周期表d、f元素闭环反应的Baldwin-Aibassov规则展开的新方法
Pub Date : 2017-02-28 DOI: 10.17265/1934-7375/2017.02.006
A. Yerkin, Yemelyanova Valentina, S. Tatyana, Bulenbaev Maxat, Blagikh Evgeniy
The authors have studied the effect of a magnetic field on Baldwin’s rules. The authors have proposed a new mechanism that takes into account the effect of the angle and energy endoor exo-cyclization. The authors propose to extend the rule Bouldwin not only for sp-, spand sporbits, but and for d d and f f elements of I-VIII of the Periodic table.
作者研究了磁场对鲍德温规则的影响。作者提出了一种新的机制,该机制考虑了角度和能量内外环化的影响。作者建议不仅对元素周期表中的sp-、spand-sporbits元素,而且对元素周期I-VIII中的d-d和f-f元素,推广Bouldwin规则。
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引用次数: 0
System Validation Tests for an SOFC Power System at INER INER SOFC电力系统的系统验证测试
Pub Date : 2017-01-28 DOI: 10.17265/1934-7375/2017.01.002
Shih-Kun Lo, W. Hong, Hsueh-I Tan, Hua Ting, Ting-Wei Liu, Ruey‐yi Lee
This research presents the results of system validation tests for an SOFC power system. In the study, the system was heated up without electric device, i.e., the fuel providing the required thermal energy through an integrated BOP (balance of plant). The ex-situ experiments, without an SOFC stack installed in the system, were first conducted to investigate the operability of a BOP apparatus. It was found that the BOP possessed high conversion rates for both steam reforming and water gas shift reactions. The total fuel concentration of hydrogen and carbon monoxide from the reformer was around 91.2%. The system validation tests showed that, with the natural gas as fuel, the output power from the stack reached to 1,060 W, while the fuel utilization efficiency and electrical efficiency were 67.16% and 45.0%, respectively. A steady 600-hour system operation test was carried out at an average system temperature of 694 C. Of which, a 36-cell stack was employed for the test. Meanwhile, the current, voltage and output power were 26 A, 32.3 V and 840 W, respectively, and its electrical efficiency was around 33.4%.
本文介绍了SOFC电源系统的系统验证测试结果。在本研究中,系统在没有电气装置的情况下进行加热,即燃料通过集成的BOP(工厂平衡器)提供所需的热能。在系统中没有安装SOFC堆栈的情况下,首先进行了非原位实验,以研究防喷器设备的可操作性。结果表明,该防喷器在蒸汽重整和水煤气转移反应中均具有较高的转化率。重整器中氢气和一氧化碳的总燃料浓度约为91.2%。系统验证试验表明,以天然气为燃料时,烟台输出功率达到1060 W,燃料利用效率和电效率分别为67.16%和45.0%。在平均系统温度为694℃的条件下,进行了600小时的稳定系统运行测试,其中使用了36个电池堆叠进行测试。同时,电流为26 A,电压为32.3 V,输出功率为840 W,电效率约为33.4%。
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引用次数: 0
Assessment of Triazine Herbicides in Soil by Microwave-assisted Extraction Followed by Gas Chromatography Coupled to Mass Spectrometry Detection 微波萃取-气相色谱-质谱联用评价土壤中三嗪类除草剂
Pub Date : 2017-01-28 DOI: 10.17265/1934-7375/2017.01.001
Darlan Ferreira da Silva, M. Landgraf, M. O. Rezende
An alternative and fast method for the analysis of a mixture of nine triazines herbicides in soil is presented. The method is based on MAE (microwave-assisted extraction) of herbicides using ethyl acetate as extractant. The economy in the use of solvents coupled with the decrease in extraction time and lower power consumption make MAE a technique that meets the principles of green chemistry. MAE operational parameters, extraction time, mass of the sample and extraction temperature, were optimized by RSM (response surface methodology). Determination of analytes was completed using gas chromatograph coupled to mass spectrometry detection. The selected triazines could be efficiently extracted by the solvent at 80 °C for 10 min, with 80% output of maximum power. When the optimized method was applied to analysis samples, the recoveries of analytes ranged from 81.8 to 106.0% and relative standard deviations were lower than 8.41%. The method is stable and reasonable, which can be used for the determination of ninetriazine herbicides residues in soil.
提出了一种快速分析土壤中九种三嗪类除草剂混合物的方法。以乙酸乙酯为萃取剂,采用微波辅助萃取法提取除草剂。溶剂使用的经济性,加上萃取时间的缩短和功耗的降低,使MAE成为一种符合绿色化学原则的技术。采用响应面法对提取工艺参数、提取时间、样品质量和提取温度进行优化。分析物的测定采用气相色谱联用质谱法。所选的三嗪类化合物在80℃条件下萃取10 min,最大功率80%。将优化后的方法应用于分析样品时,加样回收率为81.8% ~ 106.0%,相对标准偏差小于8.41%。该方法稳定合理,可用于土壤中氮三嗪类除草剂残留量的测定。
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引用次数: 1
Bioavailability Improvement of SLMs Based Erythromycin Ethyl Succinate using Stearic Acid-Myrj-52-based SLM’s 硬脂酸- myrj -52型SLM提高琥珀酸红霉素乙酯SLM的生物利用度
Pub Date : 2017-01-28 DOI: 10.17265/1934-7375/2017.01.006
U. Osonwa, S. Majekodunmi, Emmanuella OnyechiN, Harrison Thaddeus Gugu
Solid lipid microparticles of erythromycin ethyl succinate were prepared using solvent evaporation method to improve its bioavailability and efficacy. The solvent was allowed to evaporate after which the various entrapments were determined; the best entrapment was used in the in vivo studies to determine the bioavailability and efficacy. This study was done with albino mice. The best entrapment obtained was 83% with a loading capacity of 2.9% (Batch D) and was used in comparison with the unformulated drug to check for the in vivo efficacy. The results show higher efficacy with the formulated drug than with the pure drug both in vitro and in vivo. The in vitro test results were better despite that some enzymes which need to act on the solid lipid microparticles were not present in the in vitro assay and could lead to a reduction in the release of the drugs. In conclusion, there was improvement in efficacy, and hence bioavailability.
采用溶剂蒸发法制备了丁二酸乙酯红霉素固体脂质微粒,以提高其生物利用度和药效。使溶剂蒸发,然后测定各种截留物;在体内研究中使用最佳包埋剂来确定生物利用度和疗效。这项研究是在白化病小鼠身上进行的。获得的最佳包封率为83%,负载能力为2.9%(批次D),并与非模拟药物进行比较以检查体内疗效。结果显示,在体外和体内,配方药物的疗效都高于纯药物。尽管一些需要作用于固体脂质微粒的酶在体外测定中不存在,并且可能导致药物释放减少,但体外测试结果更好。总之,疗效和生物利用度都有所提高。
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引用次数: 0
Microstructure Evolution at Different Cooling Rates of Low Carbon Microalloyed Steels 低碳微合金钢在不同冷却速率下的组织演变
Pub Date : 2017-01-28 DOI: 10.17265/1934-7375/2017.01.004
E. Brandaleze, M. Ramírez, M. Ávalos
In low carbon microalloyed steels (C  0.1%), the content of V, Nb and Ti affects the phases transformation kinetic during cooling in the rolling process. The final microstructure determines the required mechanical properties such as high formability, high toughness and adequate strength. For this reason it is relevant to identify and determine the volume fraction of the ferrite, bainite and martensite present in the structure. The microalloying elements: V, Nb and Ti promote carbides precipitation during cooling. The precipitates control the grain size refinement during hot rolling process and the mechanical properties of the steel. In this sense it is necessary to increase the knowledge on the microstructure evolution at different cooling rates. In this paper, the results obtained on two low carbon microalloyed steels (with C contents between 0.11%-0.06%) are reported. An integrated methodology including dilatometry in combination with microscopy techniques was applied. By EBSD (Electron Backscatter Diffraction) technique and microhardness measurements, the structural study was completed. Through a thermodynamic simulation using Fact Sage the type of precipitates in the studied steels structure at the temperature range between 950 °C and 450 °C, were predicted. The information on the evolution of the steel structure at rolling process conditions is relevant to consider changes in processing conditions.
在低碳微合金钢(C 0.1%),V、Nb和Ti的含量影响轧制过程中冷却期间的相变动力学。最终的微观结构决定了所需的机械性能,如高成形性、高韧性和足够的强度。因此,识别和确定结构中存在的铁素体、贝氏体和马氏体的体积分数是相关的。微合金元素V、Nb和Ti在冷却过程中促进碳化物的析出。析出相控制着热轧过程中的晶粒细化和钢的力学性能。从这个意义上讲,有必要增加对不同冷却速率下微观结构演变的了解。本文报道了两种低碳微合金钢(含碳量在0.11%-0.06%之间)的试验结果。采用了一种综合方法,包括结合显微镜技术的膨胀测量法。利用电子背散射衍射(EBSD)技术和显微硬度测量,完成了结构研究。通过使用Fact-Sage的热力学模拟,预测了在950°C和450°C之间的温度范围内,所研究的钢结构中沉淀物的类型。关于轧制工艺条件下钢结构演变的信息与考虑工艺条件的变化有关。
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引用次数: 2
Multiconfigurational Study of the Electronic Structure of Negatively Charged Fullerens 负电荷富勒烯电子结构的多组态研究
Pub Date : 2017-01-28 DOI: 10.17265/1934-7375/2017.01.005
F. Naderi, V. Veryazov
Multiconfigurational second order perturbation theory was employed in order to describe the ground and excited states of C_60^(-n). Different choices of the active spaces are discussed and the possibility to apply multiconfigurational theory to study C_120 is investigated. The calculations were performed for all possible spin states (for selected charge) and show the preference of low spin state. The energy difference between two C_60^(-3) and pairs C_60^(-1)- C_60^(-5) and C_60^(-2)- C_60^(-4) shows that the probability to create a charge alternation in fullerides is small.
用多组态二阶微扰理论描述了C_60^(-n)的基态和激发态。讨论了活性空间的不同选择,并探讨了将多重组态理论应用于C_(120)研究的可能性。对所有可能的自旋态(对于选定的电荷)进行了计算,并显示了低自旋态的偏好。两个C_(60)^(-3)和C_。
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引用次数: 0
Recovery of Gold from Aqueous Solution Containing Au(III) by Silicon Organic Polymer 硅有机聚合物从含Au(III)水溶液中回收金
Pub Date : 2017-01-28 DOI: 10.17265/1934-7375/2017.01.003
Ganchimeg Yunden, Burmaa Gunchin, N. Kano, Hee-Joon Kim
The silicon organic polymer containing PSOT-3 (dioxothiocarbamide groups) has been synthesized and characterized, and the adsorption of Au(III) on PSOT-3 was investigated. The results showed that PSOT-3 had good adsorption capacity for Au(III), and the adsorption of Au(III) was found to be the most effective in 0.1~0.3 mol/dm hydrochloric acid solution. The adsorption is physical and the process is endothermic, and Freundlich isotherm fits the data better than the Langmuir isotherm. The adsorption can be generally described by electrostatic interaction (Coulomb’s force) between the adsorbent and the adsorbate. The high adsorption capacity of this sorbent has significant potential for gold recovery from aqueous solutions.
合成并表征了含二氧硫代氨基基(PSOT-3)的硅有机聚合物,研究了PSOT-3对Au(III)的吸附作用。结果表明,PSOT-3对Au(III)具有良好的吸附能力,在0.1~0.3 mol/dm的盐酸溶液中对Au(III)的吸附效果最好。吸附过程为物理吸附,吸热吸附,Freundlich等温线比Langmuir等温线更符合数据。吸附作用一般可以用吸附剂和吸附物之间的静电相互作用(库仑力)来描述。该吸附剂具有较高的吸附能力,对回收水溶液中的金具有重要的潜力。
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引用次数: 4
Intelligent Management Based on Chemical Reagent Quality Analysis 基于化学试剂质量分析的智能管理
Pub Date : 2016-07-28 DOI: 10.17265/1934-7375/2016.07.004
Hairui Zhang, Guofu Zhang, Li Zhang
Access database technology and Visual Basic programming language are used to develop a set of chemical reagents quality analysis and inspection of intelligent management application software, and its stability was investigated. The results show that the software is used to manage intelligently the quality analysis of chemical reagents test each linkage, to upload and save the analysis of test data and results in the network in time for users, to build a network of information sharing platform for enterprises and quality management departments, and its quality of chemical reagents test results is used to manage by the computer with practical application value. The software is simple, convenient, fast, friendly interface, stable operation, accurate and reliable results, with a high value to promote the application.
采用Access数据库技术和Visual Basic编程语言开发了一套化学试剂质量分析检测智能管理应用软件,并对其稳定性进行了考察。结果表明,该软件用于对化学试剂质量分析检测的各个环节进行智能化管理,为用户及时在网络上上传和保存分析检测数据和结果,为企业和质量管理部门搭建了一个网络信息共享平台,其化学试剂质量检测结果由计算机进行管理,具有实际应用价值。该软件操作简单、方便、快捷,界面友好,运行稳定,结果准确可靠,具有较高的推广应用价值。
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引用次数: 1
Behavior of Self-assembled Mn(III)/Mn(II)-NEt3 Conjugate on Different Support Observed by AFM-SNOM AFM-SNOM观察自组装Mn(III)/Mn(II)-NEt3在不同载体上的共轭行为
Pub Date : 2016-07-28 DOI: 10.17265/1934-7375/2016.07.001
Alexander, Vasil'evich, Udal'tsov
Et3N (Mn-triethylamine) complex conjugated with binuclear Mn-hydroxide, Mn2(OH)3Cl and similar manganese complex with Et2NH (diethylamine) self-assembled in aqueous solutions have been investigated by simultaneous AFM (atomic force microscopy) and SNOM (scanning near-field optical microscopy) in thin layers prepared on mica and PET (polyethylene terephthalate). The size of the particles after crystallization of the precipitated former conjugate was controlled with XRD (X-ray diffraction). It is found that the conjugate self-assembling produces the smallest grains with the diameter of 65 ± 7.5 nm measured at contact with the support. This particle size matches the crystallite size of 44.2 nm found by XRD for the conjugate taking into account the particles deformation under the contact with the support. The self-assembly of the smallest particles in solution has produced non-transparent for light core observed on mica with the size varied between 300 to 400 nm. The latter occurs due to hydrophobic interactions since no core of the former conjugate has been found on hydrophobic PET surface. No submicroscopic core is also found in the case of similar conjugate with Mn-Et2NH complex on PET film and mica both.
采用原子力显微镜(AFM)和扫描近场光学显微镜(SNOM)在云母和聚对苯二甲酸乙二醇酯(PET)上制备了薄层,研究了水溶液中双核氢氧化锰(Mn2(OH)3Cl共轭的Et3N (mn -三乙胺)配合物和自组装的Et2NH(二乙胺)类似的锰配合物。用XRD (x射线衍射)对沉淀前共轭物结晶后的颗粒大小进行了控制。结果表明,共轭自组装产生的颗粒最小,与载体接触时直径为65±7.5 nm。考虑到颗粒在与载体接触时的变形,该颗粒尺寸与XRD测得的共轭物晶粒尺寸44.2 nm相匹配。在云母上观察到,溶液中最小粒子的自组装产生了不透明的光核,其大小在300 ~ 400 nm之间。后者的发生是由于疏水相互作用,因为在疏水PET表面没有发现前者共轭物的核心。与Mn-Et2NH配合物在PET膜和云母上的相似共轭也未发现亚显微核。
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引用次数: 1
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化学与化工:英文版
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