碳酸钠

蝙蝠、燕子以及更多的动物遗体以化学方式保存成他们死亡时的姿势，被密封在水里的碳酸钠沉积物中。

Bats , swallows and more are chemically preserved in the pose in which they perished , sealed in the deposits of sodium carbonate in the water .

碳酸钠是铝土矿浮选的有效pH调整剂和分散剂。

The sodium carbonate is a effective regulator and disperser .

膨润土与碳酸钠反应制P型分子筛的初步研究

Preliminary Study on Zeolite Sieve P Preparation by the Reaction of Bentonite and Sodium Carbonate

石化CO2解析气应用于碳酸钠制造过程燃爆性分析

Flammability and Explosion Analysis of Petrochemical CO_2 Desorbed Gas used in Soda Production

胺活化热碳酸钠吸收液解吸CO2动力学研究

A Study on the Desorption Kinetics of CO_2 from Hot Activated Na_2CO_3 Stripping Liquid

说明碳酸钠或碳酸氢钠对菌丝生长的抑制作用，一方面是由于改变了培养基的pH值，另一方面可能是由于碳酸根和碳酸氢根离子抑制了菌丝的生长。

It indicated that mycelial growth inhibition was resulted from both pH in medium and carbonic acid ions .

研究了含氧系漂白剂&过碳酸钠（PC）和过硼酸钠（PB）的物化性能和洗涤漂白性能。

The physico-chemical performances and detergency , bleaching of containing oxygen - PC and PB were studied .

目的用前馈（BP）神经网络对过碳酸钠合成工艺进行研究，筛选新的复合稳定剂。

Objective To study the synthetic process of sodium percarbonate using Back Propagation Artificial Neural Network ( BP-ANNS ) .

高CaO煤灰渣用碳酸钠溶液溶出氧化铝可能性的研究

On the possibility of leaching alumina from high-CaO coal ash by soda solution

实践中，石灰，石灰氮，碳酸钠皆可用来向病田土壤中添加，以使土壤pH值调整到≥7.0，并成为本病防治的主要方法。

Thus amendments of lime , calcium cyanamide or sodium carbonate to adjust soil pH value to 7 is practiced to control the disease .

沥青基球状活性炭浸渍碳酸钠脱硫剂脱除H2S的性能与表征

Performance and Characterization of Pitch-Based Spherical Activated Carbon Impregnated with Na_2CO_3 as Desulphurization Agent for H_2S Removal

碳酸钠对烷基苯磺酸钠/脂肪醇聚氧乙烯醚/H2O体系相行为和流变性的影响

Effect of Na_2CO_3 on the Phase and Rheological Behaviors of LAS / Neodol_ ( 25-9 ) / H_2O

应用电化学实验方法和扫描电子显微镜（SEM）研究了碳酸钠在氯化钠溶液中对铝合金的缓蚀作用。

The effect of sodium carbonate on the corrosion inhibition of aluminum alloy in sodium chloride solution was investigated by SEM and electrochemical means .

分解率大小的比较表明，水合硅酸钙在苛性碱溶液中的稳定性明显大于dηSiO2为水合在碳酸钠溶液中的稳定性。

The comparison on decomposition ratio in different solution indicate that calcium hydrate silicate is unstable in soda solution .

ATR图谱分析表明，过氧乙酸-过碳酸钠脱胶的精干麻中半纤维素和木质素等胶质的含量都进一步得到降低。

ATR analysis showed that the content of hemicellulose and lignin had been further reduced .

用EDTA测定溶液中锌含量，最后利用盐酸和EDTA的消耗量联合计算含锌碱性溶液中游离碱和碳酸钠量。

The concentrations of free alkali and sodium carbonate were calculated with the consumption of hydrochloric acid and EDTA standard solution .

EDTA络合滴定与酸碱滴定联合测定含锌碱性溶液中游离碱、锌和碳酸钠

Determination of free alkali , zinc and sodium carbonate in zinc aqueous alkali by uniting EDTA complexometric titration and acid base titration

Luminol－碳酸钠水溶液的声致发光

Sonoluminescence of aqueous solution of luminol-sodium carbonate

染浴中加入释酸剂，可以用碳酸钠调节染浴初始pH值为弱碱性，降低初始上染率，防止产生色花。

When the acid releasers were added to dyeing baths , sodium carbonate could be used to adjust the initial bath pH to weakly alkaline for reducing the initial dye uptake and preventing unevenness .

由丁酰氯和糠醇反应，以廉价的氧化钙和碳酸钠为复合束酸剂，合成了香料丁酸糠醇酯，并用IR、GC等进行了表征。

Using sodium carbonate and calcium oxide as cheap acid-capturer , perfume furfuryl butyrate was synthesized from furfuryl alcohol and butyryl chloride , and was characterized by GC and IR .

土壤的pH值在海水灌溉前后变化不大；残余碳酸钠（RSC）的变化也较小；

The pH values of soil and the residual sodium carbonate ( RSC ) do not change any more before and after seawater irrigation .

RVA分析碳酸钠对玉米淀粉和马铃薯淀粉糊化性质的影响

Effects of sodium carbonate on pasting properties of maize starch and potato starch by RVA analysis

使用液固化学反应法，以尿素和无水碳酸钠为原料，在N，N-二甲基甲酰胺（DMF）溶剂的反应介质中，制备了氰酸钠产品。

Sodium cyanate was prepared from reactants & urea and anhydrous sodium carbonate through liquid-solid chemical reaction method , in the solvent of N , N-dimethlformamide ( DMF ) .

碳酸钠-碳酸氢钠溶液中X-42钢楔形缝隙内的电位和pH值

Distribution of Potential and pH Value in Wedge-Shaped Crevice on Piping Steel X-42 in Sodium Carbonate-Sodium Bicarbonate Solution

对CO2法硬化的水玻璃砂再生砂而言，造成再生砂制备的型砂性能恶化的主要原因是残留碳酸钠盐类的晶体及其碎片。

For the CO2 hardened regenerated water glass sand , the main cause of performance deterioration of moulding sand prepared from regenerated sand is owing to the crystal and chips of the residual sodium cabon-ate .

过碳酸钠-醋酸酐作用下的Baeyer-Villiger反应

Baeyer - Villiger Reaction with Sodium Percarbonate in acetic anhydride

次氯酸钠复方消毒剂为以次氯酸钠配以碳酸钠、硅酸钠、表面活性剂等成分而成，原液含有效氯2150mg／L，pH值为12.49。

The compound disinfectant of sodium hypochlorite contains the ingredients such as sodium carbonate , sodium silicate and surfactant in addition to the main ingredient sodium hypochlorite .

共沉淀法是合成LDHs的常用方法，一般均采用氢氧化钠和碳酸钠作为沉淀剂。

Coprecipitation is a popular method to synthesize LDHs , which usually uses NaOH or Na2CO3 as precipitant .

ATR图谱分析表明，过碳酸钠脱胶后精干麻中的胶质基本去除，但精干麻中还含有半纤维素和木质素。

ATR analysis showed that the gum was removed after the sodium carbonate degumming . But the degummed ramie fiber contained hemicellulose and lignin .

从SEM图片可以看出，过碳酸钠脱胶后包覆在苎麻纤维周围的胶质基本去除，苎麻纤维的横节和竖纹都能够清晰的看到，但纤维素表面有裂缝，纤维受到了损伤。

From the SEM pictures , readers can see that the gum coated with ramie fiber was removed after the sodium percarbonate degumming . But the cellulose surface was cracked ; it meant that the fiber was damaged .