三羟基的
- 与 三羟基的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Methods The method of GOD with 2,4,6-tribromo-3-hydroxybenzoic acid as a new chromogen was employed to make paper strips.
方法用2,4,6-三溴-3-羟基苯甲酸为色原的葡萄糖氧化酶法试剂制作试纸条,用CCD检测反应后的唾液葡萄糖检测试纸条的色度。
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In this paper, three kinds of hydroxyl component are prepared for two-component waterborne polyurethane paint, that is, acrylic dispersion, acrylic emulsion and silicone-modified acrylic emulsion. The influence of the composites of these dispersion and emulsions on polymerization process, viscosity, particle size and coagulum are investigated, infrared spectroscopy , inductance coupling plasma , transmission electron microscopy and thermogravimetric analysis are used to characterized their structure, composite, morphology and thermal stability, respectively.
本论文制备了三种用于水性双组分聚氨酯涂料的含羟基组分,即丙烯酸分散体、丙烯酸乳液和有机硅改性丙烯酸乳液,研究了这些分散体和乳液在制备过程中聚合物的羟值、酸值、玻璃化温度、乳化剂、反应温度等对聚合转化率、凝聚物含量、聚合物粘度和粒径的影响,用红外光谱、热重分析、透射电镜和感应偶合等离子技术表征了其结构、组成、形态和热稳定性。
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Both of them showed no toxic effect on mice at the testing dose of 10 mg/kg. The 2,2-diphenyl-1-picrylhydrazyl free radical scavenging test showed that both of the formicary extracts were potent radical scavengers and their scavenging activities were dose-dependent. Furthermore, at higher concentrations (5~10 mg/ml) both of them exhibited significantly higher DPPH scavenging activity than butylated hydroxytoluene.
二苯基三硝基肼(1,1-diphenyl-2-picrylhydrazyl ,DPPH)自由基的清除能力的检测表明:两种蚂蚁窝甲醇提取物都具有显著的自由基清除能力,并呈现出剂量依赖性,而且,在高浓度时(5~10 mg·mL-1),它们的自由基清除能力甚至显著地高于二丁基羟基甲苯(butylated hydroxyl toluene,BHT)。
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Forbesii, monoterpenes and sesquiterpenes account for 41.30% and 32.65%, respectively, in which (1R)-α-pinene (3.98%), sabinene (2.51%),(1S)-β-pinene (5.78%), m-cymene (4.05%), limonene (3.55%), 3, 7-dimethyl-1, 3, 7-octatriene (3.98%),γ-terpinene (8.70%), anisole (1.78%) and (1S)-endo-bornyl acetate (2.62%) as the monoterpenes and its derivatives, and-β-elemene (1.17%),α-bulnesene (1.40%),-β-bisabolene (1.21%),-elemol (1.42%), guaiol (1.14%), dehydroxyisocalamendiol (1.13%),-aristolene (1.99%), bulnesol (9.48%),γ-eudesmol (1.77%), guai-1(10)-en-11-ol (1.12%) and α-bisabolol (5.35 %) as the sesquiterpenes and its derivatives are the main components.
1R-α-蒎烯(3·98 %)、桧烯(2·51 %)、(1S)-β-蒎烯(5·78 %)、m-月桂烯(4·05 %)、柠檬烯(3·55 %)、3,7-二甲基-1,3,7-庚三烯(3·98 %)、γ-萜品烯(8·70 %)、茴香醚(1·78 %)和(1S)-桥环醋酸冰片酯(2·62 %)为单萜类化合物及其衍生物中的主要成分;-β-榄香烯(1·17 %)、异愈创木烯(1·40 %)、-β-没药烯(1·21 %)、-榄香醇(1·42 %)、愈创木醇(1·14 %)、去羟基异菖蒲二醇(1·13 %)、-土青木香烯(1·99 %)、异愈创木醇(9·48 %)、γ-桉醇(1·77 %)、愈创木-1(10)-烯-11-醇(1·12 %)和α-没药醇(5·35 %)为倍半萜类化合物及其衍生物中的主要成分。
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Fourteen new pyrethroids containing isoxazole were designed and synthesized from 4-isopropyl-3-substituted phenyl-5-hydroxyl isoxazoles as major material, whose structures were also characterized by IR, 1H NMR and elemental analysis.
以4-异丙基-3-取代苯基-5-羟基异噁唑和3-苯氧基苄基溴为原料,三乙胺为缚酸剂,设计并合成了14个未见报道的4-异丙基-3-取代苯基-5-异噁唑基-(3'-苯氧基)苄基醚。通过红外光谱、核磁共振、元素分析等手段,确证了它们的化学结构。
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In this paper, we designed and synthesized a molecule of compound 1, 2-(benzooxazol-2-yl)-5-4-(3-(benzothiazol-2-yl) phenylamino-6--1,3,5-triazin-2-ylaminophenol, which can only assembled into an organogel upon a short irradiation with ultrasound in toluene-methanol mixed solvent. DSC, XRD and IR were used to detect the properties and mechanisms of the organogel.
本论文中,我们设计合成了一个有机小分子化合物1,4-氨基(2-羟基苯基)苯并噁唑3-氨基苯基苯并噻唑二辛基胺缩三聚氯嗪,研究发现,在甲苯/甲醇=1:2的混合溶剂中,只有利用超声才能使之形成凝胶,加热冷却的方法不能形成凝胶,而形成针状结晶。
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The interfacial bonding between a series of bonding agents including polyhydroxy alcohols bonding agents (LBA-22,LBA-201,hyantoin/triazines composite bonding agents,neutral polymeric bonding agents and substituted amides and RDX were studied. Meanwhile,all of the bonding agents were used to prepare RDX-CMDB propellants.
研究了多羟基醇类(LBA-22、LBA-201)、海因/三嗪类、中性聚合物类和取代酰胺类键合剂与RDX的表界面作用,并在RDX-CMDB推进剂中考察了这些键合剂的作用效果。
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The chlorin e6 7 and chiorin 11 were oxidized further with osmium oxide in the same oxidization condition to yield bateriochlorin 8 and 12, respectively.
卟吩醛2在碱性条件下转化为卟吩e6三甲酯7,2与烷基溴化镁的格氏反应给出脱镁叶绿酸醇9,选择高钌酸四丙基铵和N-甲基吗啉N-氧化物将3-位羟基氧化成羰基,所生成的卟吩二酮10在酸性条件下脱去甲酸甲酯生成焦脱镁叶绿酸衍生物11,用四氧化锇对7和11实施氧化,则分别转化为细菌卟吩衍生物8和12。
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Free protons, unlike the hydroxyl groups needed for silane reaction, are present on almost all three-dimensional particulates, which is claimed to make titanates more universally reactive.
不象硅烷反应那样需要羟基,自由质子存在于几乎所有的三维粒子上,这使得钛酸酯具有更加普遍的反应能力。
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Two types of three-arm or four-arm star-shaped hydroxy-terminated PCL weresynthesized via the ring-opening polymerization of CL with multifunctional initiator and 〓catalyst.
以多元醇(季戊四醇或2,2-羟甲基丁醇)为引发剂、〓为催化剂,引发CL单体的聚合,合成了端羟基化的三臂或四臂星型PCL聚合物。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。