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Similarly, there is no definite conclusion about the effect of cellular alkalinization. It is well known that alkaline conditions are cytotoxic, but the mechanisms leading to alkaline-induced cytotoxicity are still unclear.

细胞内的碱化对於细胞的作用同样尚未有一明确的定论,一般而言碱化被认为是对细胞体有害的刺激,但是其促使细胞死亡的机制也尚不明朗。

In order to solve the temperature optimization Control for basification Tower in complicated bleaching process, the optimization control strategy is analyzed. To avoid trapping at local optimization effectively, the improvement method for standard genetic algorithm is proposed.

摘 要:针对工艺复杂的漂白工段碱化塔温度控制优化问题,分析了碱化塔温度优化控制策略,提出了标准遗传算法的改进方法IGA,有效避免了标准遗传算法寻优过早陷入局部最优解问题。

In this paper, a quaternary ammonium salt of chitosan was synthesized and the factors affect on the solubility or degree of substitution of product, such as the concentration of alkali, the time of basification, the content of water in system, the time of dispersing and the method of adding epoxyproryltrimethylammonium chloride, were discussed in detail. The product was characterized by IR, DSC, TG and X-RAY diffraction. The effects of time, humidity and temperature on the gases permeability of the quaternary ammonium salt of chitosan film were researched.

本论文研究了壳聚糖季铵盐的合成反应,对碱化浓度、碱化时间、水的含量、分散时间和醚化剂的加入方式等因素对制备反应的影响进行了考察;应用红外光谱、DSC、TG以及X-射线衍射对产物进行了表征;探讨了时间、湿度和温度对壳聚糖季铵盐膜透气性的影响。

DS and distribution of DS were improved. The optimized technology was gotten as follows: sodium borate was 8wt%,alkalization temperature 20 alkalization time 90min.The heat-resistance of CMC was also enhanced by adding sodium silicate in alkalization, and adding sodium borate in etherization in the synthesis of CMC. ra was decreased, but the viscosity was significant increased.

综合考 虑对水溶液粘度和取代度及其分布的影响,得到优化了的工艺配方:硅酸钠的加入量浙江人学硕士学位论文为纤维素的10叭%左右,碱化温度为20℃,碱化时间为90min,采用两次加碱法工艺(Zmol%和1 。1 smol%),醚化阶段加6wt%的四硼酸钠。

The soil had the alkalize characteristic, and the decisive factors were terrain, texture and precipitation, so before the haloxylon ammodendron settled down, the soil had the alkalize characteristic, and the haloxylon ammodendron was alkali-resistant plant, but if the total alkalinity excessively high, the haloxylon ammodendron also grew difficulty.

土壤具有碱化特征,主要是由地形、质地、降水等结构性因素决定的,由此得出荒漠植被梭梭定居之前土壤就具有了碱化特征,梭梭是耐碱性荒漠植被,但总碱度过高的区域梭梭也难以生长,因此土壤酸碱度仍然是该区域影响梭梭生长和分布的重要因子。

Saline soils and the rice paddy soils developed on saline soil.were sampled from Zhenlai county of Jilin Province in this paper.The main alkalize characteristic parameters,including pH,cation ex- change capacity,exchangeable Na~+,exchangeable sodium percentageand the content of wa- ter-soluble salty,were measured.

本文中的土样采自吉林省镇赉县,在盐碱土的典型区域,选择了未开发利用的盐碱土和在盐碱土基础上开发为稻田土壤的剖面,测定计算了土壤 pH 值、阳离子交换量、交换性 Na~+、碱化度和水溶性盐总量等主要碱化特征参数。

Applying desulphurization by-product properly can reduce soil bulk density, improve soil structure, increase soil permeability and improve the physical properties of soil moisture, reduce pH, ESP, TDS and improve the sodic soil physical and chemical properties.

脱硫副产物能降低土壤容重,改善土壤结构,增加土壤通透性,改善土壤水分物理性状,中和土壤碱性,降低土壤pH值和碱化度,降低土壤的全盐量,从而达到改良碱化土壤的作用。

A decrease in sore throat during the postoperativeperiod was recorded when the cuff was inflated with a smalldose of alkalinized lidocaine (i.e., 40 mg of L-HCl and 1.4%of NaHCO3) rather than with air when ventilation was controlledwithout N2O.

综上所述应用小剂量碱化利多卡因(碱化利多卡因40 mg 和 1.4%的碳酸氢钠)填充气管导管套囊,可明显减少笑气全麻患者围手术期咽痛的发生。

The improved method of konjac glucomannan carboxy methylation was proposed in this paper according to the effects of deacetylation. Carboxymethyl KGM were synthesized by blending KGM with etherification agent first and then basifying and catalyzing in ethanol. Basifying first and then etherifying prepared traditional carboxymethyl KGM.

针对脱乙酰基的这种影响进行羧甲基化方法的改进,在乙醇介质中先混合醚化剂,再进行碱化催化反应制备羧甲基魔芋葡甘聚糖,并通过与传统的先碱化再醚化的KGM羧甲基改性方法比较,达到乙酰基脱出顺序上的不同。

Current density, realkalisation time and concentration of sodium carbonate solution have significant effect on the bond strength after FRT.

采用拉拔试验,考虑到电流密度、再碱化时间、碳酸钠溶液浓度等因素研究了再碱化后钢筋混凝土的粘结强度。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。