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The continuous electrodeionization technology was used in low-level radioactive wastewater treatment to minimize radioactive wastes and energy consumptions, with Cs, Co, and Sr chosen as the typical fission products of pressurized water reactor.

为满足低放废水处理在放射性废物最小量化和节能降耗方面的要求,研究如何利用连续电除盐技术处理低放废水。

The room temperature modulus and high temperature modulus of cured samples with low content of onium salt initiator have little change before and after the addition of co-initiator.

碘锚盐引发剂含量较低时,加入共引发剂的体系的常温及高温模量与未加体系相比没有明显变化;碘锚盐引发剂含量较高时,加入共引发剂的体系的常温模量比未加体系有所上升,而高温模量则变化不大。

By way of f-CaO chemical analysis and thermal analysis, the article studied the influence of K_2O on the mineral of C_2S or C_4A_3 which chiefly formed a cement of high silicon belite sulphur aluminate cement .

目的为研究K2O对高硅贝利特硫铝酸盐水泥主要矿物C2S和C4A3 S的影响,为含有钾的低品位矿物原料生产高硅贝利特硫铝酸盐水泥奠定了基础。

The chemical structure of the product was characterized by means of the melting point and IR. The results show that tetraethylammonium bromide which was used as a phase transfer catalyst in this reaction had optimization effect on the interfacial diffusive reaction of BTC and PNP. Higher concentration of sodium hydroxide, lower temperature and a higher dosage of BTC produced a small amount of 4-nitrophenyl chloroformate, while lower concentration of sodium hydroxide and a lower dosage of BTC made reaction incomplete, which affected the yield.

结果表明,在碳酸二(4-硝基苯基)酯合成中使用的相转移催化剂四乙基溴化铵对受界面扩散控制的BTC气与对硝基酚钠反应有良好的相转移催化效果;氢氧化钠质量分数较低时,酚钠盐向溶有BTC的油相扩散速度较小,较高时会产生氯甲酸对硝基苯酯;温度较低、BTC量较高时,会产生少量氯甲酸对硝基苯酯,BTC用量较低会使反应不完全,这些都影响着收率。

This effect was observed clearly at final concentration between 1 and 10μ mol/L after treating for 24 hours. We concluded that the possible mechanisms of hydroquinone bleaching hyperpigmented skin were through its inhibition of tyrosinase activity at lower concentration and its cytotoxicity at higher one.

提示18α-甘草酸双胺盐、熊果苷的皮肤脱色作用机制与氢醌可能不同,后者低浓度时以抑制酪酸酶活性为主,高浓度时主要是细胞毒,且细胞早期的损伤部位可能发生在树状突。18α-甘草酸双胺盐能否成为一种无细胞毒酪氨酸酶抑制型皮肤脱色剂有待进一步临床加以验证。

The different Melilotus varieties under the condition of the low content (1ower than 0.10 mol/L) salt stress showed certain degree of adaptability, but with the increase of salt content, the inhibitory concentration level also increased.

各草木樨品种对低浓度(≤0.10 mol/L)盐胁迫有一定的适应性,但随盐浓度的增加其受抑制程度加剧。

And countries was 5. 4%. And the control rate was 2. 9%, in which that in cities was 4. 2% and countries was only 0.9%. From these data we knowed that three rate of hypertension very low. The traditonal risk factors of cardiovascular diseases including overweigh, fat, alcohol, high salt intake, hypokalemia, hypocalcemia of cardiovascular diseases and low animal protein intake have been known, but these factors only explained half of cardiovascular diseases. So, it is necessary to find out and recognize the new risk factors.

心血管疾病的传统危险因素(体重超重和肥胖、饮酒、膳食高盐、低钾、低钙、低动物蛋白质)已经早已被认识,在不同的地区和不同的人群也进行了样本量不同大小的流行病学研究和基础研究,但研究表明传统的危险因素只能解释50%的心血管疾病,仍有50%的心血管疾病不能用传统的危险因素来解释,因此有必要认识和寻找新的危险因素。

Through temperature、paracresol sodium salt concentration and the amount of BTC such as the study.

结果表明:酚钠盐浓度、温度以及BTC用量过高或过低,都会降低收率,其中温度较高会加速BTC的分解,而BTC用量较低会使反应不完全。

These results above indicated that ordered mesoporous titanosilicate with different Si/Ti molar ratio could be obtained using trimeric surfactant C_(14-2-14-2-14) as templating agent and the Si/Ti ratio could be as low as 5 without the losing of mesostructure ordering.

上述结果说明以自组装能力强的三聚表面活性剂C_(14-2-14-2-14)为模板剂可以制得不同钛含量的介孔硅钛酸盐材料,尤其是可以得到Si/Ti比低至5的高钛含量介孔硅钛酸盐材料,这对于提高此类材料的氧化催化性能有重要意义。

Using trimeric surfactant C_(14-2-14-2-14) as templating agent, the low cost and facile inorganic species sodium aluminate and sodium silicate as inorganic precursors, highly ordered 2D hexagonal aluminosilicate MCM-41 with high Al content were successfully synthesized.

利用廉价易得的硅酸钠和偏铝酸钠作为无机前驱体,以低聚季铵盐表面活性剂C_(14-2-14-2-14)为模板剂合成了高铝含量,高有序性的二维六方结构介孔硅铝酸盐材料,并对材料的结构、表面性质、形貌以及酸性进行了研究。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

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