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To examine the capacity of alkaline resistance of Albizzia julibrissin Durazz seedlings,the contents of MDA,soluble sugar and proline,and the activity of POD and SOD in Albizzia julibrissin durazz tree body were measured by means of visible spectrophotometry.

为检测合欢幼苗的抗碱胁迫能力,文章试验利用可见分光光度法测定了碱胁迫下合欢幼苗体内的丙二醛、可溶性糖、脯氨酸含量及POD、SOD活性,分析这些生理指标在不同处理浓度、不同处理时间下的变化规律,探求碱胁迫下合欢幼苗的抗逆生理机制。

The environmental effects resulting from simulating Carex meyeriana growth suggested that shading, acid and alkali, soil moisture treatments influenced the physiological indexes of Carex meyeriana in a certain degree. The content of chlorophyll and proline under adversity accumulated and increased, accumulation was mostly correlated to the time under adversity. Different treatments were also impact the transpiration rate and stomatic resistence.

乌拉苔草模拟环境效应表明:遮光处理、酸碱处理和水分处理对乌拉苔草的生理指标有一定的影响,叶绿素和脯氨酸在逆境下都有所积累,并且积累量与逆境的时间长短相关,对蒸腾速率和气孔阻力也有影响。

Using struvite sediment to remove the nitrogen in waste water has many advantages,such as high removal rate of nitrogen and reaction speed,small amount of sludge,reclaiming the ammonia nitrogen etc.

在废水处理中采用鸟粪石沉淀法脱氮,具有氨氮去除率高、反应速度快、污泥体积小的优点,同时可以回收氨氮。

The operation result of UASB combined with A-SOMBR treating leachate:when volumetrical loading rates were in the range of 0.76-1.61kgCOD/(m3·d), the average removal of COD was 82.66% and the average value of COD in effluent was 188.46mg/L;When volumetrical loading rates in range of 0.058-0.23kgNH3-N/(m3·d),the removal of NH3-N was 88.22% and NH3-N concentration declined to 27.02mg/L.

UASB+A-SOMBR组合工艺处理垃圾渗滤液的研究结果表明:在容积负荷0.76-1.61kgCOD/(m3·d)内,A-SOMBR对COD平均去除率为82.66%,出水COD平均值为188.46mg/L;在容积负荷0.058-0.23kgNH3-N/(m3·d)范围内,A-SOMBR对于UASB产水中氨氮平均去除率88.22%、出水氨氮平均值为27.02mg/L。

MAP is a kind of fertilizers which can be sold for reducing the expense of chemical precipitation method running. Though large numbers of experiments some kinetic parameters, including the value of pH, the relationship between the rate of ammonia-nitrogen removal and the ratio of reagents selected in reaction, reaction time and speed of whisking and so on were obtained.

在大量实验的基础上,通过对反应的几个动力学参数的详细研究,总结出了pH 值、反应药剂配比等与氨氮去除率的关系,并通过正交试验设计与单因素分析得出该方法在处理高浓度氨氮废水中最佳的工艺条件。

Effects of microbial transglutaminase on the tensile properties of plastic made from soy protein isolates are studied. The results show that the tensile strength and Young modulus of the protein plastic are increased from 9.2MPa and 265.4MPa of the control, which is not treated with TG, to 14.7MPa and 390.1Mpa respective, which is treated with TG at 50℃ for 60min. High molecular weight protein conjugates are formed with TG treatment, and they are responsible for the enhanced tensile properties, denaturalizing temperature and enthalpy values.

研究了微生物谷氨酰氨转胺酶对大豆分离蛋白塑料拉伸性能的影响,发现在50℃时转氨酶对大豆分离蛋白催化聚合反应60 min,形成的高分子聚合物使大豆分离蛋白的抗拉强度和杨氏模量分别由未经处理时的9.2 MPa和265.4 MPa增加到14.7 MPa和390.1 MPa,同时增加了蛋白质的变性温度和热焓值。

Through the research of this paper, a conclusion can be drew: NaCl treatment raise the NH4+-N removal ratio obviously by 18%, and is better than treating by heating, H2SO4, HCl and NaOH. The most reasonable concentration of NaCl is 0.8~1.0mol/L considering technical, economic and other factors synthetically; The best conditions of NaCl modifying is as follows : temperature 70~75℃, time 2.5hours, granularity <120mesh, volume/mass 25ml/g; As additive forming pores, activate carbon powder is a little better than charcoal powder, but the effect of both is much better than sawdust.

通过本论文的研究得出以下结论:NaCl改性能明显提高沸石对氨氮的去除效率,氨氮去除率提高了18%以上,其改性效果优于加热、H2SO4、HCl、NaOH等处理方法,综合考虑技术经济等因素的影响,取0.8~1.0mol/L为最合理的改性浓度;NaCl改性的最佳条件如下:温度70~75℃,时间2.5h,沸石粒径<120目,体积质量比25ml/g;作为微孔沸石的造孔剂,活性炭粉略优于木炭粉,但二者的效果均比木屑好得多。

Wedgeplug O-Seal plug valves with their positive, no-leak features are not only recommended as the best general purpose valves for handling hydrocarbons, vegetable oils, solvents, etc., but are ideal for such tough service as butane, propane, butadiene, acetone, ethyl alcohol, ammonia, anhydrous ammonia, benzene, vinyl chloride, dry chlorine, Dowtherm, ethane, ethylene, hydrogen chloride, napthalene, oxygen, hydrogen, phthalic anhydride, dry phosgene, phosphoric acid, potassium carbonate, styrene, molten sulphur, sulphur dichloride and related services within a temperature range from -300oF to + 450oF within pressure limits of the valves.

楔塞O形密封旋塞阀具有积极的、无泄漏特性,不但是最好的通用的阀门,用于处理碳化氢,植物油,溶剂等,还特别适用于严酷的应用环境,如丁烷,丙烷,丁二烯,丙酮,乙醇,氨,无水氨,苯,氯乙烯,干氯,道氏热载体,乙烷,乙烯,氯化氢,萘,氧,氢,邻苯二甲酸酐,干碳酰氯,磷酸,碳酸钾,苯乙烯,融化硫,二氯化硫,以及温度在-184oC至232oC之间,压力在阀门额定压力等级范围内的有关应用。

Ammonia volatilization in relation to N application rate and climate factors was studies through field experiment in red soil under the crop rotation of Smooth Crabgrass in spring and Winter Radish in autumn Results indicate that ammonia volatilization in Treatments N90, N160 and N230 in spring dragged on for 10~17 days, and peaked at the 6th~8th day after urea application, reaching N0.11, 0.57 and 1.84kg hm^(-2)d^(-1), respectively, and the total amount of N loss through ammonia volatilization was N0.67~5.16kg hm^(-2) accounting for 0.74%~2.24% of the total N applied.

通过红壤旱地种植牧草马唐和蔬菜冬萝卜轮作试验,研究了在春秋二季红壤旱地氨挥发对不同施氮量和气象因子的响应。结果表明,红壤旱地春季牧草实验,氮肥处理N90、M60和N230,氨挥发持续10~17d,在施肥后6~8d达到峰值,峰值分别为N0.11、0.57和l.84kg hm^(-2)d^(-1)。

The progress in the research on Polyaspartic acid as green water treatment corrosion inhibitor is reviewed in detail. The inhibition effects of PASP for carbon-steel, copper and copper alloys corrosion in different solutions are summarized. It is shown that the complex of PASP and sodium tungstate has a good synergistic effect.

综述了近年来聚天冬氨酸作为水处理缓蚀剂的研究进展;探索了其对碳钢、铜及铜合金在不同体系中的缓蚀效果;指出了复配聚天冬氨酸具有较好的缓蚀协同效应。

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