The photoconductive properties of the pigments containing anthraquinone are studied in bilayer photoreceptor. A linear relationship between pigments that bear a substituent in the anilide ring in the coupler moiety and Hammett constant σ was obtained. Therefor, we conclude that electron-withdrawing groups enhances the sensitivity of these pigments.

對(duì)蒽醌系列偶氮染料光敏性的研究結(jié)果表明黄色精品视频在线观看，偶合基酰胺芳環(huán)上的基團(tuán)會(huì)影響其光敏性精品黄黄久久久免费看，并隨吸電子性質(zhì)的增強(qiáng)光敏性增加，首次揭示了其光敏性與Hammett常數(shù)σ間有良好線性關(guān)系的規(guī)律成人播放日韩在线播放AV。

RN2, in which R is an aromatic hydrocarbon.

重氮基一價(jià)陽(yáng)離子rn2免费看黄色短片，其中r是芳烴

In the reaction of substituted arylamine and sulfuric acid, and utilizes the feature of that said inert organic solvent is easy to form azeotrope with water to continuously deliver the water produced in the couse of reaction from the reactor.

本發(fā)明在取代芳胺與硫酸的反應(yīng)中加入了一種惰性的有機(jī)溶劑，如：氯苯淫荡视频网页，二氯苯亚洲熟女偷窥综合网，三氯苯，硝基苯等，利用其易與水形成共沸物的特點(diǎn)人人肏屄人人操，將反應(yīng)生成的水不斷地導(dǎo)出反應(yīng)器每日更新国产。

In the precence of the base catalyst KF/Al2O3, the one - pot reaction of 2 -hydroxybenzaldehyde or 2 - hydroxynaphthaldehyde with ethyl α- bromoacetate,α-bromoacetophenone , 1,4 - dichloromethylbenzene , 4,4'- dichloromethylbiphenyl and 1,5 -dichloromethylnaphthalene gave the benzofuran compounds in 38-89% yield.

本文報(bào)道用 KF/Al_2O_3作為堿催化劑，由水楊醛或2-羥基-1-萘醛分別和α-溴代乙酸酯美女黄色被插视频、α-溴代苯乙酮激情婷婷另类小说、芐基氯、4男插女黄色视频在线观看网址，4'-二氯甲基聯(lián)苯和191AⅤ看片，5-二氯甲基萘等進(jìn)行一鍋化縮合反應(yīng)，以38～89％的產(chǎn)率合成了14種芳并呋喃化合物人人操人人艹人人射。

Methoxy sec-ethyl acetate, Ethyl acetate, Ethyl forate,α-Pinene,β-Pinene, Camphene, Junipene, Limonene, P-Cymene, Linalool and Terpinole are regarded as the key flavorous components, which result in the peculiar smell and taste in fruits of Rubus L..

綜合分析表明日本视频一区在线观看，甲氧基次乙基乙酸酯、乙酸乙酯精品黄色A片在线观看、甲酸乙酯女孩小穴自慰网站、α-蒎烯、β-蒎烯国产一级特黄A片A视频、莰烯及檜烯免費一級毛片、檸檬烯、對(duì)傘花烴国产亚洲精品AAAA片在线播放、芳樟醇亚洲精品黄色网站视频在线观看、萜品醇類等化合物是四種懸鉤子類果實(shí)的主要香味成分。

The sulfonated polyetherketone with cardo group films made by different sulfonation degrees and solvent evaporation shows different microstructure by PALS and atomic force microscopy.

利用對(duì)高分子材料納米量級(jí)自由體積空洞極為靈敏的正電子探針超碰人人操人人射，并輔之原子力顯微鏡法研究了磺化及溶劑蒸發(fā)對(duì)酚酞側(cè)基聚芳醚硐膜制備的影響国产成人情侣在线手机免费观看。

In this study, the electrical conductive composites (comprised of thermoplastic matrix resins-high density polyethylene, polyphenylene sulfide and polyarylethersuifone with cardo group, and conductive fillers-short carbon fiber, carhon black and graphite) are prepared and characterized in detail. The relation among composite structure and directalternating electric properties, some electric and magnetic parameters under X-band microwave and shielding effect, the mechanical behaviour are analysed. And furthermore, some relative experimental devices are developed.

本工作利用短切碳纖維、炭黑激情免费视频观看网站在线观看、石墨為導(dǎo)電填料填充熱塑性樹(shù)脂高密度聚乙烯国产特黄大片美女精品、聚苯硫醚、酚酞型聚芳醚砜国产下药迷奸，制得具有良好導(dǎo)電性能和機(jī)械性能的導(dǎo)電性高分子復(fù)合材料国产欧美日韩精品一卡，并以此為對(duì)象，研究了材料的穩(wěn)恒電場(chǎng)和交變電場(chǎng)的基本特性與材料結(jié)構(gòu)的關(guān)系成年黄页网站视频全免费，研究了在X波段微波場(chǎng)下的電磁參量及屏蔽效應(yīng)最新地址91，以及研究了復(fù)合材料及其基體樹(shù)脂的力學(xué)行為，與此同時(shí)還建立了相應(yīng)的表征測(cè)試手段欧美A片最新网址。

Polyethersulfone with Cardo is a developed engineering thermoplastic and membrane material with high glass transition temperature. PES-C ultrafiltration membranes were prepared by phase inversion method using dimethylacetamide as solvent and PVPK3O as additive.

采用凝膠相轉(zhuǎn)化法久久911，以新型耐高溫工程塑料－含酚酞側(cè)基的聚芳醚砜為膜材料，N搜锁一个能看的毛片网站，N-二甲基乙酰胺為溶劑久玖玖视频在线播放，通過(guò)改變鑄膜液中添加劑聚乙烯吡咯烷酮(PVPK30)的含量，在平板刮膜機(jī)上制備了一系列超濾膜。

Leaf oil of Litsea mollis: cineole and linalyl propanoate

毛葉木姜子葉油：桉油素中国野外性农村xXxXHD、芳樟醇基丙酸酯等

ObjectiveTo explore the methods of prevention and cure of sun-induced aging dermis, and clarify the mechanism of Ginsenoside Rb1 on sun-induced aging dermis, with the study of expression of matrix metallo preteinases in sun-induced aging dermis fibroblasts' cytoplast, which are cultured in vitro, under the effect of Ginsenoside Rb1 and arotinoid ethyl ester.

目的通過(guò)人參皂苷Rb1與芳維甲酸乙酯對(duì)皮膚真皮體外培養(yǎng)光老化成纖維細(xì)胞胞質(zhì)內(nèi)基質(zhì)金屬蛋白酶表達(dá)的影響亚洲欧洲日韩黄片一区二区，闡明人參皂苷Rb1對(duì)光老化的防治機(jī)理，探索光老化的防治手段日韩无码国产精品视频。