The results indicated that the composite films exhibited much improved gas sensing performance.The phthalocyanine and its a-Fe2O3 embedded nano-particulate LB filmswere prepared by Langmuir-Blodgett technique. The films were characterized by AFM, UV-Vis and FT-IR spectra. The results indicated that the embedded LB films were composed of a-Fe2O3 nanoparticles and isopropoxyphthalocyanine molecules. The gas sensitivity of such prepared composite LB films was greatly improved. The film could detect 5ppm of propyl alcohol at room temperature. The composite films could be considered as gas-sensors for alcohols.

利用LB技術(shù)制各了異丙氧基酞菁銅LB膜和酞菁銅包埋球形α-Fe_2O_3納米粒子的雜化LB薄膜黄色网站18岁，對其AFM、紫外和紅外光譜的研究表明操人人操网，利用LB技術(shù)可以實(shí)現(xiàn)酞菁與α-Fe_2O_3納米粒子的有序組裝人人肏人人干人人肏，而且雜化薄膜對醇類氣體的靈敏度有較大幅度提高，如對濃度為5ppm正丙醇的靈敏度為3.85榴莲视频下载ios下载，因此搜索超碰在线操人妻。，雜化薄膜可以作為室溫下醇類氣體傳感器進(jìn)行開發(fā)研究欧美精选1。

A sol containing SiO_2 particles was prepared by the base catalyzed hydrolysis and polycondensation of tetraethoxysilane through sol-gel process. A solution containing double-chain polymer of methyltriethoxysilane was also prepared under acid condition, as the introducer of water repellence.

通過溶膠-凝膠法，在堿性條件下水解縮聚正硅酸乙酯獲得含有SiO2顆粒的溶膠网站在线观看视频免黄；以甲基三乙氧基硅烷在酸性條件下水解縮聚獲得雙鏈聚合物溶液国产一级a，作為疏水基團(tuán)的引入劑。

Ruthenium catalysts prepared by the new method possess larger surface area than that prepared by the traditional method.

結(jié)果表明人操人操人操人操人操人操人操，Ru負(fù)載在采用新方法成型的載體上制得的催化劑具有更大的比表面積亚洲天堂的无码在线视频。

These coatings have been characterized by the state-of-the-art techniques of XRD, nano-indentation, scratch test, SEM, RBS, etc. As the result, it was found that TiN coatings prepared by -100V DC bias are characterized with the (111) preferred orientation and the coatings prepared by pulsed bias with (111),(200) and (220) hybrid orientations.

通過XRD、納米壓痕儀国产嫖娼妓院视频网站、劃痕儀以及SEMsansansy.com、RBS等手段對薄膜的結(jié)構(gòu)和性能進(jìn)行了測量和分析，結(jié)果發(fā)現(xiàn)中日欧美野外日一级黄色A片在线日，-100V直流偏壓下TiN薄膜有明顯的(111)晶面擇優(yōu)取向欧美精品理论片大全，而脈沖偏壓條件下TiN薄膜為(111)、(200)国产精品美女AV、(220)混合晶體取向网站视频免黄片大全皮毛大全。

I was prepared for wakeful nights,endless diapers,sore nipples,crying,and the feeling that I can't get anything done.I was prepared for sitz bath and hemorrhoids.

我已經(jīng)為不眠之夜，沒完沒了的尿布99精品视频网址，疼痛的乳頭欧美三级电影免费观看，哭聲，什么都做不成的失落久久99热这里只有精品7，甚至坐浴療法和痔瘡做好了準(zhǔn)備91自拍视频中文字幕。

Seven derivatives of 1,3- dithiocyclohexane were prepared via the reaction o f 7 aldehydes with Bunte′s salt prepared from 1,3-dichloroprop ane and sodium thiosulfate.

國內(nèi)外關(guān)于 1呦女网址www， 3 二硫環(huán)己烷類化合物的合成已有大量報(bào)道 [5~8]免费一级a一片手机看，但反應(yīng)條件較苛刻，一般都在-18~78℃之間国产视频日韩无码，而且一種方法只能合成一種物質(zhì)A片毛免费欢看。

The catalytic performance of MDA on a Mo/HZSM-5 catalyst derived from the HZSM-5 zeolite prepared from soluble glass is better than that derived from the HZSM-5 zeolite prepared from silicon gel.

由水玻璃合成的HZSM-5分子篩制得的Mo基催化劑，其甲烷無氧芳構(gòu)化性能優(yōu)于由硅溶膠合成的HZSM-5分子篩制得的Mo基催化劑黄色视频一区二免费。

Refractory mortar shall be temporarily prepared before being used while mortar added with soluble glass and cement shall be prepared within one hour before being used, moreover, mortar shall not be used once it agglomerates.

耐火泥應(yīng)在使用前臨時(shí)調(diào)制97国产精品视频，加有水玻璃及水泥的泥漿應(yīng)使用前一小時(shí)內(nèi)調(diào)制，泥漿結(jié)塊后不能使用粗粗色。

Mitchell Stephens: I did not have to go as far as I was prepared to go, but I was prepared to go all the way.

Mitchell Stephens：我并沒有打算按照原來設(shè)想的一樣走那么遠(yuǎn)72av视频，但是我已經(jīng)準(zhǔn)備好了走完全程。

Writing some events about family busy morning, alarm clock was still working and Carrie got up, then we did morning job and prepared to go out, mom helped Carrie comb her hair, I prepared milk, eggs and oranges. Those are our breakfast.

寫些早上的事情吧亚洲免费观看下载视频，莘莘在鬧鐘響后起床了中文字幕第10页，然后就是洗臉?biāo)⒀览彩裁吹模瑡寢尳o莘莘梳好的頭發(fā)麻豆久久精品国产99国产，我則準(zhǔn)備早餐人人草黄色视频在线，有牛奶，雞蛋和桔子。