The structural and photocatalytic properties of TiO〓 as well as surface acidity were greatly improved by sulfation. SO〓〓/TiO〓 solid superacid with Hammett constant Ho less than -12.14 was prepared by treating the TiO〓 with 1.0mol. L〓 sulfuric acid solution and then calcining at 450℃ for 3h. When compared to unmodified TiO〓, the SO〓〓/TiO〓 superacid catalyst exhibited higher anatase content, smaller crystal size, higher specific surface area, centralized pore size distribution, and the blue-shifted band edge of uv-vis adsorption spectra. Furthermore, the SO〓〓/TiO〓 superacid also showed excellent reaction activity and stability for CH〓Br photocatalytic decomposition even under the moist reaction conditions. The apparent quantum efficiency of SO〓〓/TiO〓 was 10 times of that of TiO〓 catalyst for the photocatalytic degradation of bromomethane. Therefore, the SO〓〓/TiO〓 superacid catalyst is promising for practical application in environmental remediation.It was found that both L and B acid sites exist on SO〓〓/TiO〓 photocatalyst while only L acid sites on TiO〓 photocatalyst. On the basis of experimental results, the synergistic model of superacidic centers was proposed for SO〓〓/TiO〓 photocatalyst to explain the photocatalytic behavior and the mechanism of superacidifing effects, assuming that the adjacent L and B acid sites induced by SO〓〓 comprise cooperatively the superacidic center on superacid photocatalyst. The group cooperation of the superacidic center could strengthen the surface acidity, increase surface acid sites and the adsorbtion of O〓, promote separation of photogenerated electron-hole pair, enhance the interfacial transfer of charges and reversibility of water adsorption. Consequently the excellent photocatalytic activity, reaction stability and resistibility to humidity of SO〓〓/TiO〓 superacid photocatalyst may attributed to the group cooperated effect of the superacidic center on the photocatalyst.

研究結(jié)果表明：SO〓〓與TiO〓表面的結(jié)合為螯合式雙配位結(jié)構(gòu)欧美丝袜在线第一页；TiO〓光催化劑表面經(jīng)H〓SO〓浸漬處理后，提高了表面酸性学生妹网址，改善了催化劑結(jié)構(gòu)和光催化性能色黄色视频在线免，當H〓SO〓浸漬濃度為1.0mol.L〓、燒結(jié)溫度為450℃時黄片A片aa视频,一级无码，可制得SO〓〓/TiO〓超強酸催化劑(H〓＜-12.14)久久av毛片天堂一区毛片，其結(jié)構(gòu)和光催化活性得到明顯改善，與TiO〓相比8090精品无码久久久，SO〓〓/TiO〓光催化劑的銳鈦礦含量高一级性爱视频无码免费、晶粒小、BET比表面積大亚洲欧美另类69XXXXX动漫、孔徑分布集中亚洲黄色一区二区在线观看、光譜吸收邊藍移，具有優(yōu)異的光催化氧化活性18未成禁片一级毛片喷水、穩(wěn)定性及抗?jié)裥阅芫啪殴鶤片，光催化降解溴代甲烷的表觀量子效率比TiO〓催化劑提高了一個數(shù)量級，是一種有實際應用前景的高效光催化劑男人舔女人下面视频；由此提出了SO〓〓/TiO〓超強酸催化劑表面集團協(xié)同作用的超強酸中心模型91亚洲精品视频在线观看，認為在SO〓〓/TiO〓超強酸催化劑表面，由SO〓〓誘導的相鄰L酸中心和B酸中心組成了集團協(xié)同作用的超強酸中心国产一级A片免费视频性开放，其集團協(xié)同作用顯著地增強了催化劑表面酸性日韩毛片无码一区二区三区、增大了表面酸量及O〓吸附量、促進了光生電子和空穴的分離及界面電荷轉(zhuǎn)移性生活爱爱网址，具有可逆吸附水的性能欧美黄片视频免费观看，是SO〓〓/TiO〓超強酸催化劑具有優(yōu)異的光催化氧化活性、很好的活性穩(wěn)定性及抗?jié)裥阅艿闹匾颉?/p>

The apparent quantum efficiency of SO〓〓/TiO〓 was 10 times of that of TiO〓 catalyst for the photocatalytic degradation of bromomethane. Therefore, the SO〓〓/TiO〓 superacid catalyst is promising for practical application in environmental remediation.It was found that both L and B acid sites exist on SO〓〓/TiO〓 photocatalyst while only L acid sites on TiO〓 photocatalyst. On the basis of experimental results, the synergistic model of superacidic centers was proposed for SO〓〓/TiO〓 photocatalyst to explain the photocatalytic behavior and the mechanism of superacidifing effects, assuming that the adjacent L and B acid sites induced by SO〓〓 comprise cooperatively the superacidic center on superacid photocatalyst. The group cooperation of the superacidic center could strengthen the surface acidity, increase surface acid sites and the adsorbtion of O〓, promote separation of photogenerated electron-hole pair, enhance the interfacial transfer of charges and reversibility of water adsorption. Consequently the excellent photocatalytic activity, reaction stability and resistibility to humidity of SO〓〓/TiO〓 superacid photocatalyst may attributed to the group cooperated effect of the superacidic center on the photocatalyst.

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On the basis of previously research, this paper re-probe into the mechanism of electro-chemist mechanical manufacturing process, making the rational technological parameter, and developing the manufacturing equipment. Through a lot of technology tests, get a lot of labratory data, accordingly, researched the surface feature of the electro-chemist manufacturing process, and deeply discussed its influence on the work piece feature. The last result is that: the electro-chemist mechanical manufacturing process can reduce the low-frequency component significantly, but on high-frequency component, it has little influence, having obviously positive pole flat effect. After manufacture, the tip parts on the surface of the work piece is cut off, there is micro "high land" shape, the parameter for surface roughness is reduced a lot, the surface outline of the work piece is negative, the bearing length rate is cliffy. Also the surface quality of the work piece is improved. This can help to avoid changing the shape, improve the feature of rub, gear and reduce the time to suit. This would also ensure the precision and result in a longer work piece life.

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The nanoplex were smaller than the unmodified nHAP; thelipiodol/nanoplex emulsion, with the mean diameter at 75±11.8nm can disperse moreuniformly and be more soluble and stable, contrary to the unmodified nHAP and nanoplex Conclusion: Nanoplex/pDNA mass ratios greater than 15 had exhibited completepDNA absorption onto positive charged polyplex and pDNA protection from thedestruction of nucleinase in rabbit serum. Unmodified nHAP may can\'t induce effectivegene delivery.PartⅡThe construction of the recombint eukaryotic expressive vector ofwild-type human p53 and RbObjective: To construct the recombint eukaryotic expressive vector of wild-type humanp53 and Rb by utilizing the theory of molecular medicine.

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A magnetic source and condenser for protecting a pipe, ionizing any fluid flowing therein, and ionizing any dissolved and suspended solids in such fluid, comprising:a magnetic source including a magnet having a pair of opposed planar major faces and a planar minor face extending between said major faces and perpendicular to said major faces,said magnet being charged so that one of said major faces is a south pole and the other of said major faces is a north pole,a magnetic condenser a pair of pole pieces, each of said pole pieces having a pair of opposed planar major faces, one of which is an inner major face and the other of which is an outer major face, the area of said inner major faces being equal to that of the major faces of said magnet, the area of said outer major face being larger than each of said major faces of said magnet,said pole pieces being positioned on opposite sides of said magnet such that said pole pieces sandwich said magnet, said inner major face of each pole piece is contiguous with and completely covers an entire major face of said magnet, and said outer major face of each pole piece faces away from said magnet,each pole piece having an integral foot extending perpendicularly to said inner major face of each pole piece such that said pole pieces have two respective integral feet which extend toward each other and are substantially coplanar, each foot having a distal and a proximal surface with respect to said magnet, each foot having an end which is spaced from the end of the opposite foot,said distal surface of each foot having a predetermined concave curvature which will conformingly mate with an outside surface of a pipe having a predetermined convex curvature,said proximal surface of each foot being contiguous with said minor face of said magnet

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A series of erosion-corrosion test has been done to J55 steel under the influence of current of gas-liquid phase by indoor self-made devices, and the corrosion mechanism of current of gas-liquid phase to oil pipe's inner surface has been got. The results show that oil pipe's inner surface will be corroded fleetly by liquid medium and corrosion products will form on it. But at the same time, the corrosion products or protective layer will be removed from the inner surface of steel pipes under the alternate impact of high speed gas and liquid flow, and on this bare steel surface corrosion film will form again and be removed again. Thus, by these ways the corrosion is exacerbated. Surface erosion-corrosion failure comes into being with the circulation of this process going on.

本文主要在氣液兩相流作用條件下欧美视频免费一区，通過室內(nèi)自制裝置，對管材鋼J55做了系列沖刷-腐蝕試驗6080yy午夜福利无码，結(jié)果表明日韩性色自拍视频网站，氣液兩相流對鋼管內(nèi)表面沖刷－腐蝕的機理是鋼管內(nèi)表面會受到液體介質(zhì)的快速腐蝕国产碰碰碰，生成腐蝕產(chǎn)物，同時鋼管金屬表面不斷被具有高流速的氣液相交替地沖擊特级婬片双飞欧美，不斷地從金屬表面脫去保護膜或腐蝕產(chǎn)物国产老太毛多女人视频，裸露的鋼表面又會被介質(zhì)快速腐蝕形成腐蝕膜后，再被兩相流沖掉国产三级视，如此反復，造成管內(nèi)金屬表面膜的連續(xù)破壞狼狠亚洲综合狼狼久久，使腐蝕加劇国产A及黄色视频，最終導致鋼鐵表面的沖刷腐蝕失效。