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盐溶液

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In the same treatment concentration and time, effect of acetum on 7 pesticide residues in cabbages surfaces were high than salt solution. The tap water treatment was the worst. There are no significant effects on pesticide residues in cabbage that refrigeration 12-48 h.

结果表明:在相同浓度和处理时间下,醋酸溶液对甘蓝叶片表面7种农药的去除效果要好于盐溶液,自来水对7种农药的去除效果在3种处理溶液中最差。

Removal techniques of pesticide residues in cabbage leaves surfaceRemoval efficacies of organophosphates, orgnaochlorine (p,p-DDT andγ-666), pyrethroids and fungicide chlorothalonil residues in cabbage leaves surface caused by different concentrations of salt solution, acetum, tap water, refrigeration and cooking were simulation studied in laboratory.

蔬菜叶片表面农药残留日常去除技术在实验室模拟了不同浓度的盐溶液、醋酸溶液,自来水,冷藏和烹饪对甘蓝叶片表面有机磷农药、有机氯农药(p,p-DDT、γ-666)、拟除虫菊酯农药、杀菌剂7种农药的去除效果。

The heat capacity Cp of EDTA solution used as activator in the Buna- S manufac-ture was measured by using a precision automated adiabatic calorimeter in the temperaturerange of 278K to 324K as fundamental data for the construction of large compositive appara-tus.

丁苯橡胶合成用活化剂乙二胺四乙酸盐溶液比热容的测定赵小明,刘志刚,陈钟颀(西安交通大学热工教研室西安710049)关键词EDTA溶液,比热容,绝热量热法比热容是物质重要参数,与物质结构密切相关。

The results of isothermal aging at 300℃ indicated that the glass cloth reinforced plastic of this polyimide can be used in the range of 250-300℃ for long period.

实验证明树脂溶液是单体的酯铵盐溶液,解决了树脂溶液分层的问题。

From these researches as above, this paper found a new method to analysis salty soil road engineering properties by phase equilibrium theory, which provides a new angle of analysis on salty soil properties, experiment and engineering practice in these ways as follows:(1) Analysis the disadvantage of traditional salty soil experiment;(2) Analysis the disadvantage of current salty soil definition by phase equilibrium theory, and gives the chart of distinguish salty soil by the condition of hydrography and climate change;(3) Analysis the mechanics of subgrade frost boiling based on the change rule of liquid content;(4) Based on the change rule of ingredients content and volume in salty soil, analysis the mechanics of subgrade salt heaving and the restraining method by adding sodium chloride.

通过以上研究,本文初步建立了以相平衡理论为核心的盐渍土路用工程性质分析方法,该方法对盐渍土工程性质的理论分析、试验研究以及工程实践提供了新的研究思路与方法,具体体现在:(1)分析了传统的盐渍土试验存在的缺陷;(2)分析了现行盐渍土定义的不足,并以相平衡理论为基础,结合水文、气候条件的变化给出了判别盐渍土的诺谟图;(3)分析了盐渍土盐溶液含量的变化规律,并从盐渍土含液量变化规律出发,分析了盐渍土路基较非盐渍土路基翻浆严重的机理;(4)分析了盐渍土各固相含量及其体积的相变规律,并在此基础上分析盐渍土路基的盐胀机理,以及采用添加氯化钠来抑止硫酸盐盐渍土的盐胀机理

Then the plateletswere returned to isotonic condition and kept for 15 minutes.

为了测定血小板对溶液渗透压变化的耐受能力,将等渗条件下新鲜血小板置于47 - 611 mOsm的系列晶体盐溶液中15 分钟,然后恢复至等渗。

The pore size decreases while the thickness and charge density increase with the increase of monomer concentration. the pore size of Na_2SO_4 rejection ranges negligibly when reaction time prolongs, while thickness and charge density increase.

考察了中空纤维纳滤膜对不同浓度的NaCl溶液的分离性能,结果表明复合膜对NaCl的截留率和通量都随盐溶液的浓度增加而降低。

Rice moisture content can be controlled by use of different consistency salt and acidliquor,the method of preparing different moisture contents rice sample also be studied and adopted.Such as, temperature humidity preservation box used in testing mechanical physical properties ofrice kernel, tensile and bending experiment device which can be used on rice samples. Configureddark box, CCD photography, image-taking system, pre-experiment to forcast mechanical physicalproperty and moisture transfer property, from which we can know that distance of elastic modulusand passion ratio in tensile process test is not big when renitency strength is much larger thanresist-pull strength, tensile test can be replaced by bending test to research tensile property ofrice, because tensile test is hard to do, experiment research methods and feasibility werediscussed, and suitable humid stress field experiment research plan ere made.

研究、采用了合适的盐溶液及不同浓度的酸溶液调节稻米含水率、制取不同含水率稻米试样的方法;研制了测量稻米材料机械物理特性时使用的保温保湿箱、适用于稻米试件使用的拉伸和弯曲试验装置;配置了暗箱、CCD摄像机、竖直与水平摄像装置及计算机图像采集系统等;进行稻米机械物理特性和水分传递特性的各种预备试验,得到:稻米的抗拉强度远小于抗压强度而拉压时的弹性模量、泊松比相差不大,稻米籽粒的拉伸试验难度极大,成功率很低,可以用籽粒的弯曲试验代替拉伸试验研究籽粒材料的拉伸特性;探讨试验研究方法及其可行性,制定了合理的稻米湿应力场试验研究方案。

Affecting behaviors of H3BO3, NaOH and PVA are studied. The optimum test conditions are as follows: 10 mL of 2%H3BO3, 10 mL of 1 mol/L NaOH, 1 mL of Rochelle salt solution, 0.16 mL of 5%PVA, 1 mL of Nesslers reagent solution, and the reaction time is 10 min.

对H3BO3,NaOH和PVA的影响规律进行了研究,提出了最佳实验条件:以2%H3BO3溶液作吸收液,1 mol/L NaOH溶液10 mL,罗谢尔盐溶液1.00 mL,5%聚乙烯醇 0.16 mL,纳氏试剂1.00 mL,反应10 min。

By way of introducing expression of salt solution concentration and Hendeson equation that describes equivalent moisture curve of hygroscopic material, the heat and mass transfer model is simplified and provides a theory proof that the transportation direction of water and vapor in the pore material is opposite but effects of two items can be integrated as an expression, Compared to traditional vapor permeating, the calculated results from the presented model in this paper that salt is not taken into considered is accurate.

根据建筑围护结构自身所处环境特点,开拓性建立了吸湿区范围内含盐多孔材料的热质迁移数学模型,通过引入描述平衡湿度曲线的Hendeson方程和盐溶液浓度的表达式,对含盐多孔介质热质迁移数学模型进行了简化,从理论上论证了多孔材料中液态水分和水蒸汽迁移二者过程的相反性和统一性。

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