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The class as a regular classroom management system, regulating the behavior of students' classroom teaching and cultivate students' order, good study habits and in practical teaching practice plays an important role. In 2001, China has a new foundation education curriculum reform,"born after the tide for the concept of" new order of teaching the "call" is formed on the traditional classroom teachers "speech" and monologic students listen up the strong shock status.

课堂常规作为课堂中的一项管理制度,规范着学生的课堂行为和课堂教学秩序,培育着学生良好的学习习惯,在具体教学实践中起着重要的作用。2001年我国掀起了新基础教育课程改革的浪潮后,&以生为本&的理念对教学新秩序的&召唤&己经构成了对传统的课堂中教师&独白式演讲&和学生们的端坐静听现状的有力冲击。

After enter to environment and occur complicated chemistry process, heavy metal may become many kinds of pollutions which be in different shape and different struction. For example, in soil, heavy metal can be differentiated five shapes generally, namely, dissolved, permutable by feeble permutoid, permutable by strong permutoid, original mineral, secondary mineral.

重金属排入环境后,有复杂的化学过程,形成多样化的形态或结构的污染物,如土壤中的重金属离子或类金属离子可分为五种形态:①水溶态的;②弱代换剂可代换的;③强代换剂提取的;④次生矿物中的;⑤原生矿物中的。

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。

It is equal to abandoned this part of material of nib lost and sharpens the saw-dust lost with the wooden pencil in fact, Because in 95%, the lead clothing pencil the raw materials utilization ratios of it material-saving the wrapping up core lead part removes the space of blind hole part of filling in backs end of pencil stub that are taken up of post of handle of pencil, The plumbaginous clothing material sharpens the saw-dust equivalent of material lost to consume with the wooden pencil basically, The pencil utilization ratio of raw materials produced with the timber is in 30-35%, a finished product pencil can only use two-thirds in using, Back one-third is abandoned, so the material-saving pencil is still pencil province of material-saving raw materials compared with wooden pencil.

被弃掉的笔头这部分材料实际上是与木制铅笔削掉的木屑是相等的,因为,节材铅笔它的原材料利用率在95%,铅衣包铅芯部分除去铅笔柄柱塞所占的铅笔头后端的盲孔部分的空间,铅衣材料基本和木制铅笔削铅衣削掉的木屑材料等量耗费的,而用木材生产铅笔的原材料利用率在30%-35%,一支成品铅笔在使用中只能使用三分之二,后三分之一被弃掉,所以节材铅笔与木制铅笔相对比还是节材铅笔节省原材料。

Results The purity and following treatment of inclusion bodies of CPB were influenced by the culturing temperature after the inducement with IPTG. The solubility of inclusion bodies of rCPB in 10mol/L urea was 2~3 times higher than in 8 mol/L urea, and the renature solution with 0.75%β-ME in 10mol/L urea could increase the solubility of inclusion bodies of rCPB, comparing with that in 10mol/L urea simply.

结果诱导后生长温度不同对rCPB包涵体的纯度及后期处理均有影响;rCPB包涵体在10 mol/L尿素溶液中的溶解度比在8 mol/L 尿素溶液中提高2~3倍;添加0.75%β-巯基乙醇能显著改善rCPB包涵体的溶解效果。

Guangzhou City Environmental Protection Bureau Chief Engineer Salicaceae told reporters that a high content of organic milk, the COD (chemical oxygen demand, detect water pollution indicators) amounted to 3,000 mg / l, while the untreated wastewater COD paper only 1000 mg / l; addition, as the issue of dumping milk containing melamine,"It's a question of the food chain as far as possible the post-diluted melamine content is low, almost not detected, but based on people's health is a highly responsible attitude In order to avoid the problem of milk contaminated fish the river."

广州市环保局总工程师杨柳告诉记者,牛奶中有机物含量很高,其COD(化学需氧量,检测水体污染程度的指标)达3000毫克/升,而未经处理的造纸废水的COD只有1000毫克/升;此外,由于倾倒的问题牛奶中含有三聚氰胺,&这有一个食物链的问题,尽量被稀释后的三聚氰胺含量很低,几乎检测不到,但本着对人民健康高度负责的态度,要避免问题牛奶污染河中的鱼类。&

CNTs were first pre-treated using acid solution (HNO3) to obtain CNTs functionalized with carboxylic groups. Subsequently, the stearyl alcohol was grafted onto CNT with the assistance of dehydrating agent, N,N'-dicyclohexyl-carbodiimide. Excellent dispersion in organic solvents such as acetone, THF, and chloroform was found for the modified CNTs (CNT-C18). In addition, the PBS/CNTs nanocomposites were then prepared through simple melt-blending. Mechanical properties, thermal behavior, conductivity of resultant polymer/CNT composites were investigated. The results show that excellent dispersion of nanotubes in the PBS matrices was achieved.

为了增加多壁奈米碳管在复合材料中的分散性,将碳管表面进行化学修饰,首先将多壁奈米碳管浸入HNO3溶液中,进行酸化,使碳管表面带有羧酸的官能基,然后再加入十八烷醇,在温和的条件下,藉由N,N'-二环己基碳二亚胺(N,N'-dicyclohexyl- carbodiimide,DCC)脱水剂脱水,使碳管和十八烷醇之间产生酯基的化学键结,改质后的碳管可以分散在acetone、THF、chloroform…等有机溶剂中,结果显示成功的利用DCC脱水剂完成碳管的改质。

With the orthogonal wavelet transform, the dissipative events of the fluctuating moisture field contributing to inertial sub-range intermittency buildup have been identified. After the dissipative events have been suppressed by introducing a conditioning criterion, the intermittency that effects on the statistical structure of the inertial subrange is restrained.

利用离散正交小波变换將湍流湿度脉动场中的耗散事件分离出来,通过引入限制因子,將湍流脉动场中的耗散事件滤去后,能较好地抑制湍流湿度的间歇性。

The dynamic changes of endothelin-1 in cerebrospinal fluid , brain tissues and plasma and ET〓-RNA expression in hypothalamus, hippocampus and temporoparietal grey and white matters were observed by radioimmunoassay methods and spot hybridization respectively.

四、建立双后肢高速、低速投射物致伤犬应激模型,应用核酸斑点杂交和放射免疫分析法,检测分析致伤前及致伤后10min、1h、2h、6h、8h,对犬的脑组织、血浆、脑脊液中的ET〓(内皮素-1)含量及海马、丘脑下部、颞顶叶灰、白质中ET〓-RNA表达的动态。

After treated with CuAz, the hydrogen from phenolic hydroxyl group in lignin was replaced by Cu from treated solution, being N-Cu-O complex, or two of the ammonia ligands of the tetrammine complex were replaced by copper-oxygen bonding from hydroxyl, being Cu-N-lignin complex.

在铜唑防腐剂处理后,木质素上酚羟基的H可以被Cu取代,形成&N-Cu-O&形式的络合物;或者处理液中四氨络合物中的2个氨配体被羟基取代,形成芳香族-铜络合物。

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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?