N-substituded thioacridones with five different structures were synthesized via a route involving Ull-man reaction, cyclization, N-alkylation and sulfurization. The structures of each thioacridone were identified with IR and MS. The results from UV-spectrophotometry show that the five N-alkythioacridones all have stronger absorption in the visible light region.

采用烏爾曼反應(yīng)变态日韩字幕无码视频下载、酸催化環(huán)化人人摸日日干、N-烷基化和硫代化四步反應(yīng)路線合成了5種不同結(jié)構(gòu)的N-取代硫代吖啶酮，利用IR和MS分析手段表征了其結(jié)構(gòu)欧美日韩精品一区二区91，UV分光光度計(jì)的測(cè)定結(jié)果表明5種硫代吖啶酮在可見(jiàn)光區(qū)都有較強(qiáng)的吸收国产免费一级二级AV。

Besides discussing the Sundanese traditional culture, the subjects we cover are how to grow rice and how to maintain the equilibrium involving water, forest areas and the environment, Achmad said.

每次遇到居民們，我們相互交換意見(jiàn)国产黄色小网站，就像這流動(dòng)的泉水www.白白色，保持良好的狀態(tài)。我們也提醒居民們不要往水里扔垃圾smag在线观看，保證泉水的圣潔亚州一级毛片干带视频。阿克馬德說(shuō)。

The Book of Songs is our country extant earliest involving to the male and female love poetry sylloge, it was reflecting to a certain extent at that time people's unique love view, demonstrated the antiquity time has loved the love poem all sorts of esthetic special characteristics.

中文摘要：《詩(shī)經(jīng)》是我國(guó)現(xiàn)存最早的涉及到男女愛(ài)情的詩(shī)歌總集97免费人人干人人操人人摸，它在一定程度上反映著當(dāng)時(shí)人們獨(dú)特的愛(ài)情觀黄网免费观看在线网站，顯示出了上古時(shí)代愛(ài)情詩(shī)的種種審美特質(zhì)。

Objective To study the pathogenesis and clinical symptoms of patient with central type of interˉvertebral disc protrusion manifested intermittent claudication as the mainly clinical presentation,so as to reach the early diagnosis and treamtmet in time.Methods In58cases,X-ray film,lumbar discography,CT examinations were done to confirm the diagnosis,then total laminectomig was performed to reveal the vertebal body without involving small arˉticular process.Intervertebral tissue was excised via duralotomy approach in2cases in remaining56cases,through right and left longitudinal syndesmotomy to resect the nucleus pulposus of lumber intervertebral disc.Results In58cases treated by operation,the operative findings were in according with the X-ray and CT examinations ofpre-opˉeration.

目的 對(duì)呈間歇性跛行主要臨床表現(xiàn)的中央型椎間盤(pán)突出癥患者的發(fā)病機(jī)制和臨床表現(xiàn)進(jìn)行研究欧美本精品男人aⅴ天堂，達(dá)到早診斷亚洲免费福利视频、早治療方法對(duì)58例患者進(jìn)行X線拍片，腰椎碘造影久久久特级黄毛片免费看，CT掃描檢查欧美午夜艳，根據(jù)檢查結(jié)果確診后，采用全椎板切除顯露椎體国产午夜福利在线播放92，未累及小關(guān)節(jié)突亚洲三级片视频，2例經(jīng)硬膜切開(kāi)入路切除間盤(pán)組織，余56例經(jīng)從雙側(cè)用神經(jīng)剝離子帶棉片將硬脊膜帶神經(jīng)根向中線剝拉至顯露圓形突出物止无码一级毛片免费，分別從左右縱韌帶摘除髓核一区二区强奸。

Methods In58cases,X-ray film,lumbar discography,CT examinations were done to confirm the diagnosis,then total laminectomig was performed to reveal the vertebal body without involving small arˉticular process.Intervertebral tissue was excised via duralotomy approach in2cases in remaining56cases,through right and left longitudinal syndesmotomy to resect the nucleus pulposus of lumber intervertebral disc.Results In58cases treated by operation,the operative findings were in according with the X-ray and CT examinations ofpre-opˉeration.

對(duì)58例患者進(jìn)行X線拍片，腰椎碘造影97干视频，CT掃描檢查欧美一级俄罗斯a片，根據(jù)檢查結(jié)果確診后，采用全椎板切除顯露椎體欧美色图亚洲，未累及小關(guān)節(jié)突综合sese，2例經(jīng)硬膜切開(kāi)入路切除間盤(pán)組織，余56例經(jīng)從雙側(cè)用神經(jīng)剝離子帶棉片將硬脊膜帶神經(jīng)根向中線剝拉至顯露圓形突出物止久久精品黄大片，分別從左右縱韌帶摘除髓核国产欧美性爱大黄片。

Methods: Adapting tachistoscopic vision and Benton Revised Visual Retention Test, three groups involving 20 children each were studied.

選取正常兒童和言語(yǔ)型學(xué)習(xí)障礙、NLD兒童各 2 0名美国韩国黄色自拍偷拍片，進(jìn)行速示下記憶實(shí)驗(yàn)和本頓視覺(jué)保持測(cè)驗(yàn)測(cè)試性多多视频。

The second day in Scotland's April Fool's is called Taily Day and is dedicated topranks involving the buttocks.

蘇格蘭第二天的愚人節(jié)叫做Taily Day，惡作劇主要在別人的屁股上做文章。

The second day in Scotland's April Fools' is called Taily Day and is dedicated to pranks involving the buttocks.

蘇格蘭第二天的愚人節(jié)叫做Taily Day欧美wwwxx，惡作劇主要在別人的屁股上做文章8090精品无码久久久。

The second day in Scotland's April Fool's is called Taily Day and is dedicated to pranks involving the buttocks.

許多人都照著做了。當(dāng)成百上千的電話打到英國(guó)廣播公司時(shí)一级国产欧美日产，證明這場(chǎng)騙局成功了亚洲欧美另类69XXXXX动漫。

The second day in Scotland's April Fool's is called Taily Day and is dedicated to prank s involving the buttocks.

蘇格蘭第二天的愚人節(jié)叫做Taily Day，惡作劇主要在別人的屁股上做文章欧美男女性爱视频中文免费。