A photoresist composition including a polymer is disclosed, wherein the polymer includes at least one monomer having the formula: wherein, R1 is selected from H, linear, branched or circular alkyl with 1-20 carton atoms, linear, branched or circular alkyl with 1-20 C atom, which is perfluorinated or semi-perfluorinated; and CN; R2 is alicyclic group with 5 or more carbon atoms; X is selected from methylene, aether, ester, amide and the connecting part of the carbonate; R3 is linear or branched alkylene with one or more carbon atoms or perfluorinated or semi-perfluorinated linear or branched alkylene; R4 is selected from H, CH3, CF3, CHF2, CH2F and perfluorinated or semi-perfluorinated aliphatic group; R5 is selected from the CF3, CHF2, CH2F and perfluorinated or semi-perfluorinated substituted and unsubstituted aliphatic group; n is 1 or higher integer; OR12 is OH or at least an acid unstable group selected from the tert-alkyl carbonate, tert-alkyl ester, tert-alkyl aether, acetal and ketal.

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Tetraploid embryos could be produced by electrofusion at the stage of two-cell embryos, which could develop to blastocysts followed by fusion of cytoplasm and nucleus and cleavage in vitro. During the fusion of cytoplasm, the DNA methylation levels of the fused embryos are as high as these of two-cell diploid embryos in vivo Then the embryos are rapidly demethylated when the nucleus begin to fuse, resulting in the lowest DNA methylation levels when the nucleus are fused completely. After that, the DNA methylation levels of the fused embryos are gradually increased until the morula stage. However, whereas an asymmetric distribution of DNA methylation is established in vivo-derived blastocysts with a higher methylation level in the inner cell mass than that in the trophectoderm, we can not detect the asymmetric distribution in most in vitro-derived tetraploid blastocysts.

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Tetraploid embryos could be produced by electrofusion at the stage of two-cell embryos, which could develop to blastocysts followed by fusion of cyto-plasm and nucleus and cleavage in vitro. During the fusion of cytoplasm, the DNA methylation levels of the fused embryos are as high as these of two-cell diploid embryos in vivo Then the embryos are rapidly demethylated when the nucleus begin to fuse, resulting in the lowest DNA methylation levels when the nucleus are fused completely. After that, the DNA methy-lation levels of the fused embryos are gradually increased until the morula stage. However, whereas an asymmetric distribu-tion of DNA methylation is established in vivo-derived blastocysts with a higher methylation level in the inner cell mass than that in the trophectoderm, we can not detect the asymmetric distribution in most in vitro-derived tetraploid blastocysts.

結(jié)果表明：利用電融合方法制備的小鼠四倍體胚胎在體外培養(yǎng)體系中經(jīng)歷細胞質(zhì)融合、細胞核融合及細胞繼續(xù)分裂發(fā)育直到囊胚期的過程偷窥偷拍视频，在細胞質(zhì)融合的時候胚胎卵裂球同體內(nèi)體外培養(yǎng)二倍體胚胎一樣尤物视频网站免费，呈現(xiàn)高度甲基化狀態(tài)；在細胞核開始融合的時候黄片香蕉，甲基化水平急速下降色天天天综合色天天一区，在細胞核完全融合的時候甲基化水平達到最低點；隨著胚胎繼續(xù)分裂91最新国产中文字幕，胚胎甲基化水平逐漸增加三级片无码在线视频，在桑葚胚期甲基化水平最高；但是囊胚期四倍體胚胎內(nèi)細胞團同滋養(yǎng)層細胞甲基化熒光信號沒有差別色综合热无码热国产，這與體內(nèi)體外培養(yǎng)二倍體囊胚內(nèi)細胞團細胞甲基化熒光強度高于滋養(yǎng)層細胞甲基化熒光強度不同久久AV先锋影音资源网站。

Tetraploid embryos could be produced by electrofusion at the stage of two-cell embryos, which could develop to blastcysts fellowed by fusion of cytoplasm and nucleus and cleavage in vitro.After fusion of cytoplasm, the DNA methylation levels of the fused embryos was very high as well as two-cell diploid embryos in vivo.Then the embryos was rapiddly demethylated when the nucleus begin to fuse, resulting the lowest DNA methylation levels when the nucleus fused completely.After that, the DNA methylation levels of fused embryos were gradually increased until the blastocysts stage.However, whereas an asymmetric distribution of DNA methylation was established in an vivo-derived blastocysts with a higher methylation level in the inner cell mass than in the trophectoderm, in most vitro-derived tetraploid blastocysts, we can not detect the asymmetric distribution.

結(jié)果表明：利用電融合方法制備的小鼠四倍體胚胎在體外培養(yǎng)體系中經(jīng)歷細胞質(zhì)融合、細胞核融合及細胞繼續(xù)分裂發(fā)育直到囊胚期的過程国产手机小视频看片，在細胞質(zhì)融合的時候胚胎卵裂球同體內(nèi)體外培養(yǎng)二倍體胚胎一樣玖玖资源网在线，呈現(xiàn)高度甲基化狀態(tài)；在細胞核開始融合的時候欧美一级情欲视频，甲基化水平急速下降黄色毛片ww，在細胞核完全融合的時候甲基化水平達到最低點；隨著胚胎繼續(xù)分裂女同一区二区三区，胚胎甲基化水平逐漸增加jiuse901，在囊胚期甲基化水平最高；但是囊胚期四倍體胚胎內(nèi)細胞團同滋養(yǎng)層細胞甲基化熒光信號沒有差別免费性爱a片在线，這與體內(nèi)體外培養(yǎng)二倍體囊胚內(nèi)細胞團細胞甲基化熒光強度高于滋養(yǎng)層細胞甲基化熒光強度不同欧美日韩综合网址。

Methylcarbonate is an important organic industrial intermediate. Because its molecular structure contains carbonyl, methyl, methoxyl group and carbonyl methoxyl group, etc., it can be used in carbonylate, methylate, methoxylate organic synthetic reaction.

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To be different from the already chloromethylation catalyst, it has a certain amount of moisture wet, which will not produce huge amounts of doughtic cancerogenic chloromethyl methyl ether during and after the reaction.4,4\'-bisbiphenyl, 1,4-bisbenzene, 1,4-bis(chloro- methyl)-2,5-dimethylbenzene, 1,5-bis-2,4-dimethylbenzene, 4-(chlor- omethyl)-1,2-dimethylbenzene, 1,2-bis-4,5-dimethylbenzene, 5,8-bis-1,2,3,4-tetrahydronaphthalene, 3,3\',5-tris-4,4\'-bisbiphenyl and 3,3\', 5,5\'-tetrakis-4,4\'-bisbiphenyl were synth- esized by using this new catalyst. Results indicated that when the reaction temperature was 55～60℃, the reaction time was 12h, the catalyst which consists of the concentration of 80%H_2SO_4, HAc and Lewis acid, the amount of Lewis acid 0.15 mol(nLewis:nbiphenyl=1.5:1), yield of biphenyl chloromethylation product 4,4\'-bis(chrolomethylbiphenyl can reach a maximum 85%.

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Ib was synthesized by condensation of phthalic anhydride with 2-methylresorcinol in fused AlCl〓/NaCl (5∶1), followed by selective acetylation, methylation, NBS bromination and condensation with sodium ethoxide.

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Seven of them have not been reported.Their structures were confirmed by IR,~1HNMR,MS,and element analysis. 4.Meanwhile,the green methylation procedure of imides was developed by using dimethyl carbonate as methylation reagent.A series of imides,for example,phthalimide,3,4-dibromo-maleimide and succincide were used for substrates.The effects of DABCO(1,4-diazabicyclo [2.2.2]octane)and DBU(1,8-diazabicyclo[5.4.0]undec-7-ene)as a catalyst in this kind of reactions were investigated.2-Bromo-3-(1-methylindolyl-3-yl)-1-methyl-1H-pyrrole-2,5-dione was prepared by using dimethyl carbonate,which further expanded the use of dimethyl carbonate,as a green agent in organic synthesis.

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Four hemicyanine derivatives,-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylamino-phenyl) etheny1] pyridinium (P1),-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylaminophenyl)-1,3-buteny1] pyridinium (P2),-N-(4-sulfobutyl)-4-2-(4-N,N-dimethylaminophenyl) ethenyll quinolinium (Q1) and-N-(4-sulfobutyl)-4-

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Immunostimulatory sequence (155), unmethylated CpG dinucleotides in particular base contexts, are relatively common in bacterial DNA but rare in vertebrate DNA, and can be detected as an infectious danger signal by the vertebrate innate immune system.

DNA免疫激活序列（immunostimulator sequence怡红院成永久免费人视频新的，ISS）是發(fā)現(xiàn)于細菌DNA 中的一些以未甲基化的 CpG二核苷酸對為核心的具有免疫激活功能的核苷酸序列。

alkylation：烷<基>化<作用>

5.3.6.2帶有烷基化作用(alkylation)的還原SDS處理6.4.6四甲基乙二胺(TEMED)對丙烯酰胺凝膠的聚合和pH梯度的影響(擴展pH梯度堿性側(cè))8.3.2非平衡pH梯度電泳(NEPHGE)

methylation：甲基化酌

維生素B6能幫助苯磷二酚雌激素(catechol estrogen)的甲基化酌 (methylation ). 而維生素B6還有能調(diào)節(jié)生物體外細胞的能力,對類固醇激素能起作用. 如果維生素B6的含量水準偏低,會導致對雌激素產(chǎn)生不良作用.

pyruvic acid：酮酸

在植物界中,生物素亦可進行下列的反應(yīng):丙酮酸(pyruvic acid)的羧基化,合成草醋酸鹽(oxaloacetic acid). 將丙酸(propionate)經(jīng)甲基丙二醯輔脢A (methyl malonyl Co-A)而轉(zhuǎn)化成丁二酸鹽(succinate). 其它涉及的輔脢可能還有乙醯輔脢A(acetyl Co-A),

remnant：殘粒

脫羧并磷酸化生成活潑的焦磷酸化合物,異戊烯焦磷酸脂(IPP)和二甲基丙烯焦磷酸脂. 這兩個中間物再進一步縮合成30碳的鯊烯. 超速離心法:(按密度大小) 高密度脂蛋白(HDL) 低密度脂蛋白(LDL) 極低密度脂蛋白(VLDL) 乳糜微粒(CM)殘粒(remnant) 入肝

dimethyl sulfoxide：二甲基亞砜

此外應(yīng)用二甲基亞砜(dimethyl sulfoxide)治療已有取得臨床癥狀及腎功能改善的報道. 積極治療能誘發(fā)本病的原發(fā)疾病最為重要. 近年來伴結(jié)核久久久久久精品免费免费直、膿胸者已少見,說明預(yù)防為有效的措施. 局限型有時可手術(shù)切除. AL伴骨髓瘤者用烷化劑和潑尼松治療約50%~60%可緩解,

Bletilla striata：白 芨

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calcium glycerophosphate：甘油磷酸鈣

它的黏度特性使它適用針筒式點膠,并具依替膦酸二鈉(Etidronate Disodium) 化學名:(1-羥基亞乙基)二膦酸二鈉鹽 質(zhì)量標準:WS 甘油磷酸鈣(Calcium Glycerophosphate) 化學名:鈣基吲達帕胺(Indapamide) 化學名:N-(2-甲基-2,

Norfloxacin Nicotinic：煙酸諾氟沙星

4-二氫-7-(1-哌嗪基)-3-喹啉羧酸煙酸鹽CAS N甲磺酸培氟沙星 70458-95-6 名稱:甲磺酸培氟沙星(Pefloxacini Mesylas)化學名稱:1-乙基-6-氟-1,4-二氫-7-(4-甲基-1-哌嗪)-4-氧代-3-喹啉羧酸的甲基磺煙酸諾氟沙星 118803-81-9 名稱:煙酸諾氟沙星(Norfloxacin Nicotinic) 化學名:1-乙基-6-氟-4氧代-1,

functional group：功能團

通過硅烷化技術(shù),可以把各種不同性質(zhì)的功能團(functional group)建合到硅膠表面,例如:鍵合十八烷基(ODS,octadecyl silane)亚洲欧美中文字幕你懂的、辛烷基、甲基玖玖玖玖久久玖玖玖玖玖玖爱、苯基增加對非極性物質(zhì)分子的保留,構(gòu)成反相色譜;鍵合帶二醇基日韩精品专区一区二区、氨基、氰基等極性基團的硅烷改善對某些極性分子的保留,

ferrocene：二茂鐵

Ajayan等人首先以二茂鐵(ferrocene)與二甲苯(xylene)為原料,藉由化學氣相沉積法(CVD)於圖案化的二氧化矽/矽基板上制作出垂直對準的多壁式奈米碳管陣列,接著他們再加入聚二甲基矽氧烷[Poly(dimethylsiloxane),PDMS]溶液,