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In our studies,sludges composting was used as object, fluoranthene was on behalf of PAHs,and methods included dynamic sampling,room analysis,sludges' composting,leaching of soil column,and room culture were employed. The main contents include:the concentration and the distribution of PAHs in municipal sludges in Jiangsu Province,effects of composting on the concentration of PAHs in municipal sludges,the physicochemical properties of water dissolved organic matters in sludges before and after composting,effects of sludges composting and DOM on the desorption-leaching and eco-toxicity of FLT in polluted soil,and primary investigation of mechanism on same phenomena.

本论文以污泥堆肥为原料,以荧蒽(fluoranthene,FLT)为PAH的代表,采用动态取样、室内分析、污泥堆肥、土柱淋滤和室内培养等方法,系统研究了江苏城市污泥中PAHs的含量以及分布模式;堆肥对污泥中PAHs含量的影响;污泥堆肥前后水溶性有机物的理化性质特征变化;污泥堆肥对污染土壤中FLT解吸-淋滤、以及生态毒性的影响,并对有关现象进行了机理探讨。

After extraction by ethanol and purification by cationic ion-exchange column, a method of using reversed-phase high-performance liquid chromatography and precolumn derivatization with o-phthalaldehyde and 9-fiuorenylmethylchloroformate is employed for determination of free amino acids in tobacco . This method assures that amino acids with amino and imino groups can be determined simultaneously. The results of duplication experiment and recovery experiment are acceptable.

本试验用乙醇提取烟叶中的游离氨基酸,并用阳离子交换树脂纯化,再用邻苯二甲醛、氯甲酸芴甲酯联合柱前衍生、反相高效液相色谱分析测定了烟叶中的游离氨基酸,该方法能同时测定烟叶中的带氨基和亚氨基基团的氨基酸,并且分析方法的重现性和回收率均令人满意。

According to the distribution rule of interbedded drift angle in buildings and variational rule accompanying change of stiffness characteristic value, the paper puts forward the advice about how to differentiate normal structure story in structure design drawings and the influence factor which should be considered. The author also advances his opinion and suggestion about how to judge the rationality of stiffness arrangement of frame-column and shear wall in frame-shear structure.

就层间位移角在楼层中的分布情况和分布规律以及随刚度特征值变化的规律,提出了在结构施工图设计中如何划分结构标准层的建议和应考虑的影响因素:并就判断框—剪结构中框架柱与剪力墙刚度分配是否合理的具体方法提出了自己看法和建议。

A method combining HPLC, a post-column derivation device and a fluorescent detector was used to determine residues of ten carbamate pesticides (aldicarb sulfoxide, aldicarb sulfone, oxamyl, methomyl, 3-hydroxy carbofuran, aldicarb, propaxur, carbofuran, carbaryl and methiocarb) in 68 vegetable and 32 soil samples under four different cultivation systems (traditional kailyard, open field vegetable base, green house and paddy) were collected from a certain city in South Jiangsu.

本研究采用高效液相色谱-柱后衍生-荧光检测法分析了苏南某市4种不同种植方式下(传统菜地、露天蔬菜基地、大棚蔬菜基地和水稻田)68个蔬菜样品和32个土壤样品中10种N-甲基氨基甲酸酯类农药(涕灭威、涕灭威砜、涕灭威亚砜、杀线威、灭多威、残杀威、克百威、3-羟基克百威、甲萘威和灭虫威)的残留量,结果表明在蔬菜中检出的氨基甲酸酯农药残留水平多处于0.2~23μgkg^-1,土壤中为0.1~10μgkg^-1;土壤中3-羟基克百威和灭虫威全部检出,其最高检测浓度分别为10μgkg^-1和1.64μgkg^-1,其他农药仅有少数检出。

By the infiltration test of soil column, the author concludes that Cr and As has the following migration patterns by dynamic researches. 1 The absorption and migration of Cr and As in loessial soil relate to content of mucilaginous grain.

4通过土柱淋滤试验,从动态角度研究得出铬、砷在黄土中具有以下迁移规律及特点:①Cr、As在黄土中的吸附和迁移与土壤中的粘粒含量有关。

Two times hydrolyzation of Fe~(3+) and Cr~(3+) was firstly pointed out in the process of pillar preparation with hydrothermal method. In order to improve the thermal stability, Fe/Cr-Si-pillaring agent solution was synthesized by hydrolyzing Fe~(3+) and Cr~(3+) solution on the surface of silica sol, and Fe/Cr-Si-pillared montmorillonite (Fe/Cr-Si-PILM) was prepared with conventional method and hydrothermal method. Because the technical innovation of preparation is the best way to improve the PILM properties, two novel methods (Microwave method and Ultrasonication method) have been studied to synthesize Fe/Cr-PILM.In order to expand PILMs new application in the field of coal conversion, catalytic activity of Fe/Cr-Si-PILM catalyst in LongKou lignite and ShenHua coal residue liquefaction was discussed and characterized in the last part of this paper.

研究证明:蒙脱石的预处理是可行的,我们以预处理后的Ca-M为原料,研究并优化了PILM的水热法制备工艺,提出了金属离子的二次水解法;为了提高PILM的热稳定性,我们自制了硅溶胶,合成了Fe/Cr-Si三元复合柱化剂,并制备了Fe/Cr-Si-PILM;在PILM合成中,制备技术的革新是改进PILM性能的重要方法,为此我们探索了微波合成法和超声波合成法在制备Fe/Cr-PILM中的应用;最后,我们选择龙口褐煤和神华煤液化残渣为研究对象,探索了Fe/Cr-Si-PILM催化剂在煤炭液化中的应用,希望能开拓PILM应用的新领域。

Trace lead in environmental water samples was preconcentrated in site and determined by flow injection-flame atomic absorption spectrometry.

以Amberlite XAD-2树脂与双硫腙通过N N基键合的形式合成了一种新型螯合树脂(XAD-H2DZ),采用IR和TGA技术对其特性进行了表征,并将其应用于微柱现场在线采样新技术中,实现了环境水样中痕量铅的在线原位预富集和实验室中流动注射-火焰原子吸收系统的联机测定。

The anatomic and histological examination and comparison of the musculus depressor septi nasi were performed in 33 normal cadavers and 30 patients with unilateral cleft lip undergoing the operation for secondary nasal deformities.

我们在唇裂与正常鼻肌肉组织的解剖组织学比较观察中发现,单侧完全性唇裂患侧降鼻中隔肌缺损,有助于正确理解唇裂鼻小柱和鼻中隔软骨尾缘的移位与畸形等特征性形态的形成。

It was found thatNPEOs were biodegraded gradually, and the total removal of NP and NPEOs wasabout 71.6%.

NPEOs及NP在沉积物柱中的年代变化表明,NPE0s进入底泥中变化较小,相对稳定地保留在底泥中。

can be drawn by analyzing the experiment data:(1) With modeling indoor garbage column leaching test, the results indicated that the dynamic change of the pollution components of leachate display complex fluctuate attenuation; During the course of initial stages and middle stages, the garbage was decompounded quickly and gave out the quality concentration of pollutant maximally to the environments and the harm was also the most serious.

通过对试验数据进行整理分析,得出了如下结论:(1)通过室内垃圾柱淋滤模拟试验,结果表明淋滤液中污染组分的动态变化呈复杂的波动衰减;垃圾在填埋过程中,初期和中期降解速度很快,向环境中释放的污染物质量浓度最大,对环境造成的危害也最为严重。

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In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷

Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.

Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。