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To improve the cyano reactivity, cyano-terminated PPENs were prepared by the end-capping reaction of PPEN-OL with CBN; benzonitrile terminated polys were also prepared by the polycondensation of excess 4,4'-oxydianiline with 1,2-dihydro-2-(4-carboxyphenyl)-4-[4-(4-carboxyphenoxyl)phenyl]-phthalazinone, followed by end-capping with CBA. The polymers synthesized exhibited good solubility in NMP, DMAc and DMF, and were crosslinked to afford phenyl-s-triazine-containing polymers under the similar conditions.
为提高氰基活性,以对氯苯腈为原料,对PPEN-OL进行封端,设计合成了含氰端基的聚芳醚腈;以含二氮杂萘酮联苯结构二酸单体与4,4'-二氨基二苯醚为原料,经Yamazaki膦酰化缩聚,并用对氰基苯甲酸进行封端,合成了含氰端基的聚芳醚酰胺。
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Among 3 cultivars, B17 occupied the least green odor contents of aromatic constituents, such as 2-hexen-1-ol acetate, butanoic acid 3-hexenyl ester and butanoic acid 3-hexenyl ester, hut had the most fruity, flowery and woody odors such as β-Ionone, 1-nonanol, Acetic acid octyl ester, Methyl benzoate, Ethyl benzoate and theaspirane, which showed that B 17 was superior to the 2 other cultivars in aroma quality.
不同品种的杨桃果实中的所含的香气成分及含量不同,B17杨桃含乙酸-反-2-己烯酯、丁酸-反-2-己烯酯、丁酸-反-3-己烯酯等青香型酯类最低而含β-紫罗兰酮、1-壬醇、乙酸辛酯苯甲酸甲酯、苯甲酸乙酯、茶螺烷等花香型、果香型及木香型成分最高,因而其香气品质要优于B10和新加坡红肉种。
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In order to ensure efficient use of the nitrogen source compounds, the metabolic flux of elemental nitrogen was analyzed for L-tryptophan biosynthesis using the 15N anthranilic acid as a tracer in the experimental process.
为了有效的利用含氮的化合物,实验过程中,采用15N标记的邻氨基苯甲酸为示踪剂,分析了N元素在15NL-色氨酸合成过程中的代谢通量。
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Based on the synthesis and characterization of side-chain liquid crystal polysiloxanes containing p-methoxyl phenyl benzolate, the homogeneous electrorheological liquid and its smart damper were fabricated.
在合成并表徵含苯甲酸甲氧基苯酯的侧链液晶聚矽氧烷高分子的基础上,制备了均相电流变液及其智能阻尼器。
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The results indicated that the homogeneous ER liquid with significant ER effect at room temperature is obtained by mixing the side-chain liquid crystal polysiloxanes containing p-methoxyl phenyl benzolate and silicone oil.
结果表明,用含苯甲酸甲氧基苯酯的侧链液晶聚矽氧烷能组成在室温下表现出较强ER活性的均相ER液,它在外加电场E=2.2kv/mm ,剪切速率为3005s^(-1)时,剪切应力达到1550Pa;增加E和振动频率,均相ER液智能阻尼器的阻尼力均增加,阻尼效果提高。
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New ruthenium benzylidene complexes benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] [k~2-diphenylphosphinoacetato] monochlororuthenium (46), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene][k~2-3-propionato]monochlororuthenium (47), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] [k~2-2-benzonato]monochlororuthenium (48) featured five-membered, flexible six-membered and rigidsix-membered chelating rings respectively are prepared by reactions of complex 41 withcorresponding sodium phosphino-carboxylates. It is confirmed by X-ray crystallographicanalysis that the coordination geometries of complexes 46 and 47 are distorted squarepyramids with phosphino-carboxylate ligands chelating to ruthenium, and the coordinationbetween ruthenium and benzylidene ligands are strengthened.
用二苯基瞵乙酸盐、二苯基膦丙酸盐、二苯基膦苯甲酸盐与钌卡宾配合物41反应合成了三个新的钌卡宾配合物:含五元膦-氧螯合环的1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基1-苯亚甲基--一氯合钌(46)、含六元柔性膦-氧螯合环的[1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基1-苯亚甲基--一氯合钌(47)及含六元刚性膦-氧螯合环的[1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基]-苯亚甲基--一氯合钌(48)。X射线单晶衍射分析证明,配合物46、47都为变形的四方锥构型,膦-氧与钌形成螯合配位,其中苯亚甲基与钌的配位得以加强。
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By using isopropyl benzene as the internal standard material, using Agilent 1100 HPLC, using methanol-acetonitrile-water as mobile phase ,using three-component grade elution program, the components that contain benzene such as TALD,PT,4-CBA,TA,BA,PX and internal standard material isopropyl benzene in liquid phase product was analysed. Shimazu6A GC was used to analyse the solvent acetic acid and internal standard material isopropyl benzne in liquid phase.
以异丙苯为内标物,应用Agilent1100高效液相色谱仪,用甲醇-乙腈-水为流动相,采用三元梯度洗脱程序分析液相产物中的含苯环组分对甲基苯甲醛、对甲基苯甲酸、对羧基苯甲醛、对苯二甲酸、苯甲酸、对二甲苯和内标物异丙苯,应用Shimazu6A气相色谱仪分析液相中的溶剂醋酸和内标物异丙苯。
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As CAAX-mimetics, 1, 3-dihydro-5-phenyl-2-H-1, 4-benzodiazepin-2-one was modified by linking carboxyl groups with various carbon through N-1 and C-3, 3-(imidazol-4-yl) propion amido group with different substituents was connected at C-7; In the synthesis of bisubstrate analogues, thiocarbamido compounds was alkylated by alkyl iodide and then hydrolyzed to give alkylthiol benzoate compounds.
1,4-苯并二氮杂草-2-酮类化合物的合成过程中分别对其1、3、4和7位进行了基团变化,在1和3位连接不同长度含羧基或酯基的侧链,在7位连接不同取代的咪唑丙酰氨基。在苯甲酸硫醇酯化合物合成过程中,建立了一种硫原子连有不同长度碳链的苯甲酸硫醇酯的合成方法。
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Sol–gel/diaminobenzoic acid hybrid materials were also generated to be used as the MALDI matrices for the analysis of oligonucleotides. It is because that DABAs have good molar absorptivity at wavelength of 337 nm. Furthermore, two amino functional groups attached to the aromatic ring in DABAs can also suppress the cation adductions of oligonucleotides and leave the protons to the oligonucleotides during MALDI-MS analysis. This matrix system can be used as an alternative for the analysis of oligonucleotides.
本论文也利用双胺基苯甲酸与溶胶凝胶混成产物当做MALDI基质来分析DNA分子,利用双胺基苯甲酸本身具有吸收雷射的特性,且其含胺之官能基可和钠、钾离子竞争DNA上磷酸根的负离子结合部位,因此可和DNA有较强的亲合力,而在脱附游离的过程中并可转移质子给磷酸根,可有效降低盐类的干扰,此一基质系统可取代传统MALDI基质混合胺盐的效果,适合用於DNA样品的分析。
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In order to investigate the effect of 2,4-Dihydroxylbenzoate on the combustion of double-base propellant, the combustion law of the propellants containing β-Bi was studied by means of the single frame amplification photography fl miniature thermocouple, the scanning electron microscopy and the LINK ISIS energy spectrum.
为了探索2,4-二羟基苯甲酸铋对双基推进剂燃烧的催化作用,采用单幅放大彩色摄影法、Ⅱ型微热电偶技术、扫描电镜和电子能谱研究了含2,4-二羟基苯甲酸铋双基推进剂的燃烧规律。
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estradiol benzoate:醇
苯甲酸雌二醇(estradiol benzoate)肌内注射,1~2mg/次,2~3次/周. 棉酚(gossypol)是棉花根、茎和种子中所含的一种黄色酚类物质. 其作用部位在睾丸细精管的生精上皮,可使精子数量减少,直至无精子. 停药后可逐渐恢复. 经健康男子试用,天天20mg,
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PABA:对氨基苯甲酸
伍兹发现酵母提取物所含的对氨基苯(甲)酸(PABA)与具有对抗作用的对氨基苯磺酰胺极为相似. 这种对抗作用发生在生物体需要对氨基苯(甲)酸的生物新陈代谢过程中. 几年后,在对叶酸的研究中发现,对氨基苯(甲)酸是叶酸分子的一个组成部分.
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sulfate:硫酸
A'kin 尤加利茶树纯净清爽洗手液蕴含最纯浄的香薰精华油,再配合纯净不乾燥的洗手液,能彻底清洁及呵护你的肌肤,使肌肤如丝般幼滑. 不含硫酸(sulfate)及羟基苯甲酸酯(paraben).
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estragole:爱草脑
果实尚含甾醇、不饱和有机酸等. 香椒子(东北产)的果实含爱草脑(Estragole)、佛手柑内酯(Bergapten). 果实挥发油中主要成分为爱草脑,约占90%. 果皮含佛手柑内酯及苯甲酸.
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gentianose:龙胆糖
另含龙胆糖(gentianose)、龙胆双糖(gentiobionse)和龙 胆酸(gentisic acid)2,4-二羟基苯甲酸. 果期的地上部分层析检查含微量的龙胆苦甙和当药甙. 2、条叶龙胆 根含龙胆苦甙和当药苦甙. 又层析检查尚含微量当药甙,而果期的地上部分只含微量的龙胆苦甙.
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gentiobiose:龙胆双糖
另含龙胆糖 (gentianose)、龙胆双糖(gentiobiose)和龙胆酸(gentisic acid,)2,4-二羟基苯甲酸. 果期的地上部分层析检查含微量的龙胆苦甙和当药甙. (2)条叶龙胆 根含龙胆苦甙和当药苦甙. 又层析检查尚含微量当药甙,而果期的地上部分只含微量的龙胆苦甙.
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gentisic acid:龙胆酸
另含龙胆糖(gentianose)、龙胆双糖(gentiobionse)和龙 胆酸(gentisic acid)2,4-二羟基苯甲酸. 果期的地上部分层析检查含微量的龙胆苦甙和当药甙. 2、条叶龙胆 根含龙胆苦甙和当药苦甙. 又层析检查尚含微量当药甙,而果期的地上部分只含微量的龙胆苦甙.