碳酸

Materials and methods: The composite was respectively prepared by blending Lysine, Histidine, Arginine with PLGA, while the composite respectively prepared by blending Algin, chitosan, NaHCO3 with PLGA as the comparison and the pure PLGA as the control. All composites were degradated in tri-distilled-water at 37℃ for 7 weeks. The degradation property of PLGA with the addition of basic additives was investigated by using gross observation, the pH change of degradation solution and the mass loss ration of the composite.

材料方法：将赖氨酸、组氨酸、精氨酸分别各按5%和10%的比例与PLGA制成复合物，于体外在37℃下在三蒸水中进行降解2个月；通过总体观察、降解液PH的变化、复合物的失重率等指标来考察碱性氨基酸对PLGA体外降解特性的调节作用，同时将碱性氨基酸的调节效果与海藻酸钠、壳聚糖、碳酸氢钠的进行对比。

Moreover, the effects of alkali metal carbonate promoters and the solvents were investigated at the same time.

考察了碱金属碳酸盐类助剂和溶剂对反应活性的影响。

The formula for calculating critical alkalify leaching was also adjusted by considering the effects of bicarbonate leaching, organic acid leaching, aluminum species, and Al-organic acid complexation, which makes the theory more applicable.

另外，考虑碳酸氢根淋溶、有机酸根淋溶、铝的形态和铝同有机酸的络合等因素，对临界碱度淋溶的计算公式进行了修正，使得稳态法的应用范围更加广泛。

The raw materials used by the method are green chemicals dimethyl carbonate and p-nitrophenol, and the catalyst is NaY molecular sieve, activated aluminum oxide or activated carbon which is impregnated by alkali metals or alkaline-earth metal compounds.

本发明涉及到一种合成对硝基苯甲醚的方法，该方法所用的原料为绿色化学品碳酸二甲酯和对硝基苯酚，催化剂是经碱金属或碱土金属化合物浸渍过的NaY分子筛、活性氧化铝或活性碳。

The application of dimethyl carbonate in thermoplasticacrylic varnish, pyroxyline varnish, alkyd varnish and PU vamish are introduced.

介绍了碳酸二甲酯在热塑性丙烯酸清漆、硝基清漆、醇酸清漆和聚氨酯清漆中的应用。

A process for preparing alkylene glycols including reacting an alkylene oxide with water in the presence of a combination of additives and an anion exchange resin, wherein the combination of additives comprises carbon dioxide and an organic or inorganic base provided in an amount sufficient to maintain a pH of the reaction mixture between about 5.0 and 9.0, with the proviso that, when the base is bicarbonate or carbonate, then the anion exchange resin is a trimethyl benzyl ammonium anion exchange resin.

制备亚烷基二醇的方法，包括让烯化氧与水在添加剂组合和阴离子交换树脂存在下进行反应，其中添加剂组合包括二氧化碳和以足以保持反应混合物的pH值在约5.0和9.0之间的量提供的有机或无机碱，前提条件是当碱是碳酸氢盐或碳酸盐时，阴离子交换树脂是三甲基苄基铵阴离子交换树脂。

Based on the work of the first part, we studied the possibility of allyl as a protection group in the synthesis of oligonucleotides consisting in some unstable nucleotide analogues, such as nueleoside carbonate and sulfite.

在寡核苷酸的类似物中，碳酸酯及亚硫酸酯在碱性条件下的不稳定性使其在合成上有一定的困难，这限制了对它们的性质作进一步的研究。

Effect of NH4Cl on phase transformation of Al2O3 obtained from ammonium aluminum carbonate hydroxide has been studied.

利用 NH4Cl 其分解时释放气体的特点控制以碳酸铝铵为前驱体的氧化铝α相变过程中的团聚。

A new method,three stage carbonization process,to reclaim gallium from alumna production is introduced.

介绍了一种氧化铝生产流程中回收镓的新方法———三段碳酸化法。

At PH 2.0-6.0, the color is red or amaranthine; at PH 7.0, it is blue: at PH above 7.0, it is dark blue.At the iron, it is purple.At the proteid,it is dark purple. it can be used in the coloring of wine, carbonic acid drinks, juice drink, jam and candy.

由于该产品在不同PH值的溶液中呈现的颜色不同，并且耐热、耐光、抗氧化，故被广泛应用于食品、配制酒、碳酸饮料、果汁型饮料、淹渍品、果酱、糖果等的着色。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。