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We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法,制备出了孔径在20-150nm之间可调和具有不同孔结构(如Y形、树枝状、锯齿状)的系列多孔氧化铝模板,在此基础上,利用电化学沉积、气相催化生长和化学控制腐蚀等方法,成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系,探索了基于模板孔壁内沿生长一维结纳米材料的机制,较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能,为低维纳米材料器件化提供了实验基础。

After introducing the low-phonon energy oxide——TeO2 into the fluoroaluminate glass,a new oxyfluoride glass was obtained with better vitrification ability.

在氟铝酸盐玻璃组分中加入适量声子能量低的重金属氧化物TeO2,得到一种新的氧氟化物玻璃。

They are phylogenetically diverse and have been isolated under various environment conditions. Unlike other electron acceptors, Fe has a very low solubility and exists primarily as insoluble Fe oxide under neutral pH.

与其他大多数的电子受体不同,在近中性pH值条件下,Fe的溶解度很低,通常以不溶性的Fe氧化物的形式存在。

Because the temperature of coal volatile pyrogenation differs from the temperature of reduction of iron oxide by H2, H2 releases at the initial stages of reduction, and the reduction efficiency of hydrogen is very low.

由于煤中挥发分的热解析出温度与氢还原铁氧化物的还原温度不一致,氢在还原初期迅速放出,导致氢的还原作用率低;提高温度和加热速度可提高煤中氢的还原作用率和挥发分的利用率。

Due to big carrier concentration and optical band gap, transparent conductive oxide thin films exhibit outstanding optical and electrical properties, such as low resistively and high transmittance in the visible range etc.

透明导电氧化物薄膜材料具有大的载流子浓度和光学禁带宽度因而表现出优良的光电特性,如:低的电阻率和高的可见光透过率等。目前,此类材料体系包括In_2O_3、SnO_2、ZnO及其掺杂体系In_2O_3:Sn、SnO_2:Sb、SnO_2:F、ZnO:Al等。

The constructor-China Sinoma International Engineering Co., Ltd chosed the process of sieving crushing system, based on experiment and by improving process and operation, sucessfully improved the lower grade limestone's w by 2% and reduced the total content of silicoaluminate by 9%, realized using lower grade limestone as cement raw material.

承建方中国中材国际工程股份有限公司,在实验研究的基础,采取了石灰石筛分破碎系统的工艺方案,并通过优化工艺布置和操作控制举措,使低品位石灰石的w值提高2%以上,硅铝类氧化物的质量分数合计下降9%,成功实现了低劣品位石灰石作为水泥生产原料成为可行。

Bacterial and chemical oxidation of gold-bearing pyrite gives rise to not only ferric sulfate and sulfuric acid but also ferrous sulphate and low-valence oxide of sulfur. The potential in the system is too low to dissolve native gold to form Au(SO4)2- Experiments indicate that gold does not dissolve in sulfatic iron solution.

含金黄铁矿在细菌氧化、化学氧化过程中,除生成高铁的硫酸盐和硫酸外,还生成了亚铁的硫酸盐及硫的低价氧化物,体系中的电位较低,距溶解自然金呈Au(SO_4)_2~-所需电位甚远,实验表明,金不溶于硫酸铁溶液中。

The results showed that 22.5μL/L of clove leaf oil had the best preservation effect on peach. After 35 days of stock, the sound fruit rate was 94%, 46.9% higher than compared group. The rotten index and the browning index were 94.1% and 85.2% lower than the control, respectivly, and the treatment could remarkablely reduce the respiration rate and ethylene release, and postponed ethylene release peak and respiration peak 5 and 10d, respectively in comparison with CK, it also delayed the drop of firmness and contents of titrable acids of the peach. When stored for 35d, firmness of control group and 22.5μL/L of clove leaf oil were decreased 60% and 34% compared with initial storage, and the activities of SOD, CAT and POD were enhanced, but the contents of SSC had no obvious difference with control.

结果表明,与对照相比,22.5μL/L丁香叶油处理对桃果实的防腐保鲜效果最好,贮藏35d时好果率为94%,比对照提高了46.9%,腐烂指数和褐变指数分别比对照低94.1%和85.2%;丁香叶油处理可以有效降低桃果实的呼吸强度和乙烯释放量,呼吸强度高峰和乙烯释放量高峰分别推迟5和10d,延缓了果实硬度和可滴定酸含量下降的速度;贮藏35d时对照和22.5μL/L丁香叶油处理果实硬度分别比贮藏初期降低了60%和34%;丁香叶油处理提高了超氧化物歧化酶、过氧化氢酶、过氧化物酶3种膜脂过氧化物酶的活性,但可溶性固形物含量与对照相比无明显差异。

Results The survival area and quality of avulsed flap in the experimental group were superior to that of control group after 15 days of operation, and the hemorheological items were markedly changed at 5 days after operation. Conclusion The better flap survival after orthotopic transplantation in avulsion injury can be improved by intravascular low level He-Ne laser irradiation through changed superoxide dismutase activity and hemorheological items in optimal irradiation intensity.

结果 术后15天治疗组撕脱瓣的成活面积、成活质量均明显优于对照组P结论低能量He-Ne激光血管内照射的生物学效应存在最佳的照射强度总量,在最佳的照射强度条件下,通过改变细胞内超氧化物歧化酶活性及血液流变学参数促进原位回植术后的撕脱瓣良好成活。

MgO-C brick has a good erosion resistance but Al〓O〓-C brick is better. Corrosion mechanism for refractory without carbon is that FeO and oxides of molten slag take place chemical reaction with constituents of refractory and forming low fusing point compounds to be dissolved in molten slag. For those refractory containing graphite carbon is to be decarburized in advance and to form decarburizing layer and metamorphosis layer. The subsequent corrosion is decarburizing and taking chemical reaction to form low fusing point compounds and dissolved in molten slag at the same time.

铁浴中硅和钛的扩散是影响铁浴及熔渣与耐火材料作用的重要因素,耐火材料中添加的TiO〓和SiC受熔渣氧化和侵蚀,将被部分还原形成Si,Ti向铁浴中扩散,Si、Ti在铁浴中的扩散研究结果是: D〓=1.84×10〓exp(-5988.7/T) cm〓/S E〓=49766 J/mol D〓=7.76×10〓exp(-53225.5/T) cm〓/S E〓=442304 J/mol 铁浴式熔融还原熔体对粘土砖,高铝砖,镁砖的侵蚀速度很高,镁碳砖抗侵蚀能力比前几种耐火材料强,但不如铝碳砖;对不含碳耐火材料在熔体中的侵蚀是熔渣中FeO及其它氧化物与耐火材料组分的化学反应形成低熔点物熔蚀进入渣相,产生损毁。

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This one mode pays close attention to network credence foundation of the businessman very much.

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