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Semiconducting carbon nanotubes can be used to fabricate field-effect transistors while metallic ones can be used as interconnects.

半导体型的纳米管可以用来制作场效应晶体管,金属型的纳米管可以用来做互连线。

The lowest surface tension of N_xB solution was better at 25℃, and lowest surface tension would down with carbon . cmc( critical micelle concentration) and γ_ in N_(12)B are 4.1 × 10~(-4)mol/L, 24.5 mN.m~(-1),what was smaller than LAS . The cmc of N_(12)B- NaCl are down with NaCl up.The surface tension and cmc of N_(12)B and N_(16)B are higher than that of N_(12)OB and N_(16)OB because of hydrophilic group ,but that of N_(12)B is lower than that of N_(16)B because of hydrophobic group .5. The borate structure and semipolar bond were studied in different pH by infrared spectrum .It indicated that N_xB and N_xOB have not semipolar bond at pH

4、25℃,N_xB系列都有较低的表面张力,并随原子数的增加而最低表面张力下降。N_(12)B比同原子数的十二烷基苯磺酸钠的最低表面张力34.5mN/m低,且临界胶束浓度为4.1×10~(-5)mol/L,也比LAS低,且随着NaCl浓度的增加而略有下降,比较N_(12)B和N_(16)B,由于C_(16)疏水基的异构体使N_(12)B的临界胶束浓度和临界胶束浓度时的表面张力γ_(cmc都低,由于增加了亲水基团使得N_(12)OB和N_(16)OB的表面张力和临界胶束浓度都要高于N_(12)B和N_(16)B。

Even if per unit GDP carbon emissions do go down, total carbon emissions will increase severalfold, and trends of global warming will be all the more severe.

即使单位GDP排放下降,但排放的总值却成倍增长,全球变暖的趋势更加严峻。

It introduces the production control of low phosphorus and low carbon high silicon silicomanganese and the measures and crafts requirement of decreasing phosphorus and carbon.

论述了低磷低高硅锰硅合金的生产控制和降磷降措施以及工艺要求。

The low-phosphorus and low-carbon Al-Si-Mn ferroalloy is produced with aluminium and common silicomanganese in certain proportion and through adding proper amount of Ca-Ba dephosphorizing agent for high temperature dephosphorizing and decarbonizing and adding proper amount of pure aluminum and clean waste steel.

本发明按一定比例的铝、普通硅锰合金,加适量的钙、钡系脱磷剂进行高温脱磷脱,再根据产品成份的要求补加金属锰,加入所需的纯铝及纯净废钢,获得的低磷低铝硅锰铁合金的组成为:Al 5~20%,Mn 50~70%,Si 8~20%,C≤1.0%,P≤0.1%,S≤0.03%,余量为Fe。

Invasion of Spartina grass has induced significant decline of the soil ecological properties of the wetlands.

土壤有机、土壤微生物生物量、氮含量以及土壤蔗糖酶与磷酸酶活性对滨海湿地土壤退化的反映最为强烈,可以作为指示性指标。

Spewing out local air pollutants and carbon, the main global warming gas, often go hand in hand.

四处飘散的当地空气污染物和往往是同时出现的,而是促使全球变暖的主要原因。

Scientific water is the key to the industry water system's energy conservation and pollution reduction of the steeling works.

在工业领域中,钢铁企业是用水大户,科学用水是钢铁企业水系统实现节能低的关键。

Objective: To study the effect of different single C-sources, N-sources and C/N ratio on the submerged-culture of Stropharia rugoso-annulata Methods: Single factor and orthogonal testing method were employed for this study.

目的:以菌丝生物量为指标,探讨不同氮源及氮比对大球盖菇液体发酵的影响。方法:单因子试验和正交试验。

Raman spectrum and UV-vis-NIR absorption spectrum show that the above procedure does not change the electronic structures of single-walled carbon nanotubes. Moreover, the infrared spectrum confirms the formation of amide bond between ammonium sulfamate and carbon nanotubes.

Raman光谱和UV-vis-NIR吸收光谱表明,上述处理过程没有改变单壁纳米管的电子结构;此外,红外光谱的研究说明氨基磺酸铵与纳米管是通过酰胺键连接起来的。

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