钠的

Because the olefinic hydroxyl groups are linked with olefinic carbon, so it can ionize H〓 ion and present the properties of weak acid, and so the olefinic hydroxyl groups change into the structure of alcoholate in the presence of alkali , but the structure of alcoholate may change into the structure of olefine alcohol again, after the Na〓 ions is removed, or when the pH value of its solution turn into pH. Because the structure of the olefine alcohol is not stable and is easy to isomerizate to become the structure of olefine ketone, so there appear the ca. 1730cm〓 C=O absorption peak in the IR spectra of the products.

明确指出了在C〓、C〓富勒醇中存在烯碳羟基与叔碳羟基等二类羟基，烯碳羟基由于与一个共轭体系相连，从而其羟基可以离解而呈现出弱酸的性质，因而在碱性条件下易形成烯醇钠盐的结构，当除去钠离子后或在酸性溶液中，烯醇钠盐结构转变为烯醇结构，但由于烯醇结构不如烯酮结构稳定，从而形成烯醇结构后，烯醇结构异构化为烯酮结构，因此在其产物的IR谱图上出现1730cm〓附近的C=0吸收信号。

ResultsThe Ziziphus jujube leaf extract could inhibit autonomic activities of the mice, prolong the sleep time induced by pentobarbital sodium, enhance the rate of falling asleep induced by barbital sodium and inhibit the central stimulating effects induced by amphetamine.

结果酸枣叶提取物可对小鼠自主活动呈明显抑制作用，延长戊巴比妥钠诱导的小鼠睡眠时间，增加巴比妥钠诱导的小鼠睡眠发生率和缩短巴比妥钠诱导的小鼠睡眠潜伏期。抑制苯丙胺的中枢兴奋作用。

Abundant instances and experimentations on synthetic dawsonite indicate that carbonic acid or excess carbon dioxide is necessary for generating dawsonite. Therefore, occurrence of dawsonite is always associated with carbon dioxide gas reservoir.

大量的实例及人工合成片钠铝石实验表明，片钠铝石的形成需要碳酸溶液或过量的CO2气，片钠铝石的分布往往与CO2天然气藏相伴生。

The morphology, occurrence and components of dawsonite were described, and the paragenetic sequence of sandstone and origin of CO2 forming dawsonite were investigated by polarization microscope, scanning electron microscope, Xray diffraction and MAT251 stable isotope mass spectrometer.

利用偏光显微镜、扫描电镜、X射线衍射分析仪和MAT251稳定同位素质谱仪，详细描述了片钠铝石的形貌、产状和成分，确定了含片钠铝石砂岩的成岩共生序列和形成片钠铝石的CO2的成因。

Heated in a boiling water bath, penicillin antibiotics such as amoxicillin, ampicillin, sodium cloxacillin, sodium carbenicillin and sodium benzylpenicillin could react with K3[Fe6] to form combined products in a dilute HCl medium. As a result, resonance Rayleigh scattering intensity was enhanced greatly and new RRS spectra appeared. The maximum scattering wavelengths of the five combined products are all located at 330 nm.

在稀HCl介质中，K3[Fe6]与阿莫西林、氨苄西林、氯唑西林钠、羧苄西林钠和青霉素钠等抗生素药物在加热条件下反应生成结合产物，会导致溶液的共振瑞利散射强度急剧增强，并产生新的RRS光谱，5种反应产物的最大散射峰均位于330 nm附近。

The invention provides a chemical nickel tungsten phosphorus plating solution for magnesium alloy, which consists of 10-20 g/L of nickel sulfate, 7-15 g/L of sodium tungstate, 29-50 g/L of sodium citrate, 14-30 g/L of sodium hypophosphite, 14-30 g/L of sodium carbonate, 5-12 g/L of ammonium bifluoride, additive accounting for 0.00005-0.003 percent of total weight and the balance being water.

本发明提供的是一种镁合金化学镀镍钨磷镀液。它由硫酸镍10-20g/L、钨酸钠7-15g/L、柠檬酸钠29-50g/L、次亚磷酸钠14-30g/L、碳酸钠14-30g/L、氟化氢铵5-12g/L、占总重量0.00005-0.003％的添加剂和余量的水组成。

The paper also conducts experimental investigation and theoretical analysis of static instability, such as subcool boiling instability, intermittent boiling instability and geyser instability.

通过微小偏差法将非线性的液钠两相流动的基本方程组线性化和无量纲化，应用系统控制理论建立液钠沸腾流动不稳定性的理论分析模型，可以对液钠沸腾发生两相流动不稳定性进行预测计算。

ResultsThe Ziziphus jujube leaf extract could inhibit autonomic activities of the mice, prolong the sleep time induced by pentobarbital sodium, enhance the rate of falling asleep induced by barbital sodium and inhibit the central stimulating effects induced by amphetamine.

结果酸枣叶提取物可对小鼠自主活动呈明显抑制作用，延长戊巴比妥钠诱导的小鼠睡眠时间，增加巴比妥钠诱导的小鼠睡眠发生率和缩短巴比妥钠诱导的小鼠睡眠潜伏期。

The time from saturated soil moisture content to wilting percentage of Aeolian sandy soil, Loessial soil and Lou soil was extended by 244.72%,251.11% and 36.31% respectively when Sodium Polyacrylate was applied at the suggested dosage.

风砂土、黄绵土与塿土的蒸发强度随着高分子化合物聚丙烯酸钠用量增加而降低，聚丙烯酸钠用量为0.5%时，砂土、黄绵土与塿土10天累积蒸发量分别较对照降低了59.89%、48.92%与55.81%；综合考虑对土壤蓄水与蒸发能力的影响，聚丙烯酸钠用量为风砂土、黄绵土应控制在0.08%～0.2%，塿土中用量必须严格控制在0.2%左右；在上述用量条件下，风砂土、黄绵土、塿土从饱和含水量蒸发失水至凋萎含水量的时间分别被延长了244.72%、251.11%与36.31%左右。

The paper involved two parts: Part 1: A two-chambered microbial fuel cell was constructed with high-concentration sodium acetate as fuel in the anode. The influence of different electron acceptors in the cathode, external resistance value, pH value and concentration of sodium acetate on electricity generation in MFC was investigated. The result showed that the maximum power density of 294.72 mW/m2 and the coulombic efficiency of 25.87% was achieved at sodium acetate concentration of 6.46 g/L, pH 7.0, external resistance 500Ωin the anode and when using potassium permanganate as electron acceptor in the cathode.

全文分为两个部分：第一部分：以乙酸钠为阳极原料构建双室微生物燃料电池，研究不同阴极受体、外接电阻、乙酸钠浓度和pH等因素对电池产电性能的影响，研究结果表明：在500mL的阴阳极反应体系中，选用乙酸钠作为阳极底物，质量浓度为6.46 g/L， pH 7.0，接入500Ω外电阻，阴极电子受体选择高锰酸钾的情况下，微生物燃料电池产电性能最好，最大电功率密度达到294.72 mW/m2，库伦效率能达到25.87%。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。