以下为句子列表：
英文: A description is given of the analytical method for the determination of the urea content in slow-release urea by the p-dimethyl aminobenzaldehyde spectrophotometry.
中文: 摘要介绍用对二甲氨基苯节醛分光光度法测定缓释尿素中尿素含量的分析方法。
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英文: Abstract: Aim To synthesize a new prodrug, resveratrol trinicotinate.Methods In presence of lithium and a catalytic amount of naphthalene, the reaction of p-methoxybenzyl trimethylsilyl ether and 3,5-dimethoxylbenzaldehyde gave resveratrol after a series
中文: 文摘:目的合成一种前药白藜芦醇烟酸酯.方法在金属锂片和催化量的萘的存在下,3,5-二甲氧基苯甲醛与对甲氧基苯甲醇的三甲基硅醚反应经过一系列转变得到白藜芦醇,白藜芦醇与烟酰氯反应得到白藜芦醇烟酸酯.结果设计并合成了白藜芦醇烟酸酯.结论提供了一种合成白藜芦醇及白藜芦醇烟酸酯的方法,采用KHSO4脱水可选择性的得到反式产物.
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英文: Fat, protein, aminophenol, trace elements in amygdalus ledebouriana schleche were determinated by ChP (2005 edition) and national standard methods, natural benzaldehyde and amygdalin were determinated by UV absorb method and HPLC method respectively.
中文: 分别用索氏抽提法、微量凯氏定氮法测定野巴旦杏中脂肪、蛋白质，用氨基酸分析仪测定多种氨基酸含量，原子吸收法测定多种元素，紫外法及反相高效液相法测定天然苯甲醛及苦杏仁苷。
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英文: It was found that when the oxidation reaction was performed in toluene solvent, benzyl alcohol was oxidized to benzaldehyde without any overoxidation to benzoic acid; on the contrary, in acetonitrile solvent, both benzaldehyde and benzoic acid were formed
中文: 发现在甲苯溶剂中进行氧化反应时，苯甲醇被氧化成苯甲醛而不会被深度氧化为苯甲酸；而在乙腈溶剂中，苯甲醛和苯甲酸均有生成。
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英文: Synthesis methods for p-hydroxybenzaldehyde are reviewed and their advantages and disadvantages are briefly compared, to conclude that direct p-cresol oxygenation is a good method, with calm reaction, simple operation, high yield, high purity and little t
中文: 叙述了对羟基苯甲醛的各种合成方法，并对各种方法的优缺点作了简要对比，认为对甲酚直接催化氧化法反应平稳、操作简单，收率和纯度高，三废量少，是一种很有前途的合成方法。
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