氮循环

Electrochemical behaviors on the surface of jamesonite in an acidic solution of pH4.0 buffer solution containing diethyl dithiocarbamate were investigated by the methods of cyclic voltammetry and AC impedance.The changes of the reactions,electrochemical adsorption,passivation action,electrochemical impedance and interfacial capacitance on jamesonite were discussed under the different conditions of electrode potentials.

用循环伏安和交流阻抗法，研究了脆硫锑铅矿在含乙硫氮的pH 4.0缓冲溶液中的表面电化学行为，讨论了在不同电位下脆硫锑铅矿表面的反应、电化学吸附、钝化作用、电化学阻抗、微分电容的变化。

No tetracthyl thiuram (TETD or D2) molecule formed by oxidation on the surface. At the potential from -0.25 V on, the chemical adsorption of jamesonite occurred. In the presence of diethyldithiocarbamate, the interaction between jamesonite and diethyldithiocarbamate became obvious from 0.35 V on.

采用循环伏安电位扫描研究方法，研究了乙硫氮在脆硫锑铅矿表面的电化学作用机理，在其表面没有氧化形成四乙基二硫化秋兰姆（TETD或D2）分子；电极电位从－0.25V左右开始就在脆硫锑铅矿产生了化学吸附。

The electrochemical adsorption behavior and mechanism of diethyl dithiocarbamate on the surface of marmatite, which are different from the mixed potential model of flotation electrochemistry, were studied by spectrum analysis, CA voltammetry and constant potential step.

采用光谱分析、循环伏安及恒电位阶跃法，研究了乙硫氮在铁闪锌矿表面吸附的电化学行为及机理，该机理与浮选电化学的混合电位模型并不一致。

The electrochemical adsorption behavior and mechanism of diethyl dithiocarbamate on the surface of marmatite, which are different from the mixed potential model of flotation electrochemistry, were studied by spectrum analysis, CA voltammetry and constant potential step.

摘 要：采用光谱分析、循环伏安及恒电位阶跃法，研究了乙硫氮在铁闪锌矿表面吸附的电化学行为及机理，该机理与浮选电化学的混合电位模型并不一致。

Under acidic condition, the dimer diethyldithiocarbamate （D2） is formed on marmatite through the electrochemical adsorption of diethyl dithiocarbamate at 0 - 200 mV.

采用光谱分析、循环伏安及恒电位阶跃法，研究了乙硫氮在铁闪锌矿表面吸附的电化学行为及机理，该机理与浮选电化学的混合电位模型并不一致。

Through the analysis of the datum about 68 patients in our department in the last three years of MEBT/MERO treating wide areas burn combing with the stomach and intestine inside and outside accessorial nutrition therapy, It shows that wide areas burn may lead to the terrible results, such as effusion of the gelatinoustissue, consuming of the quantity of heat and losing of intestine nutrient owing to the imbalance of nitrogen ion.

文章摘要：本文通过对近三年使用MEBT／MERO治疗大面积烧伤，并结合胃肠内外营养治疗的68例病人的资料分析认为，大面积烧伤因创面组织液渗出，热量消耗，氮离子失衡等因素造成体内营养丢失，同时降低有效血液的循环量，加重休克，导致水电解质失衡，免疫功能下降，易继发多种并发症。

However,the soil moisture content at soil depths of 45 cm and 60 cm in the areas with microbiotic crusts is much lower than that in the areas without microbiotic crusts(LSD-test,p.05),which reveals that the microbiotic crusts have high capability of maintaining topsoil moisture.

在世界干旱区的大量研究表明，作为荒漠生态系统的重要成分，生物结皮的形成能够增强土壤抗风蚀及水蚀的能力〔3~8〕、增强其周围维管植物的养分循环〔9~11〕、通过生物固氮提供丰富的氮源〔12〕、促进种子库的建立和生物多样性等。

By high density sampling and farming household investigation,total N content,microbial biomass N content,total N and MB-N relationship,and N cycle characteristics and N balance of plowable soil layer under different land-use types were studied in Dongting Lake region.

通过对洞庭湖典型地区的密集采样分析和农户调查，研究了4种利用方式耕作土壤全N、微生物生物量氮含量、两者关系和N素循环特征。

This generator adopts PSA transforming absorpion,which uses carbon molecule to separate Oxygen and Nitrogen from air. It transfers compressed air,which is originated from air source, into absovbing untis formed by two tower after oil removing, drying, filtering, purifying of the air. The compessedair generates Nitrogen when it is transformingly absorbed in one tower, then it is sent to another tower for regeneration. It alternately circulates between two towers, which can unceasing achieve 98%-99.9% of pure and cheap Nitrogen..

本设备采用PSA变压吸附原理，利用碳分子筛在压力变化时具有分离空气中氮的能力，以空气为原料，将压缩空气经除油、干燥、过滤等净化处理后，送入双塔组成的吸附组件，压缩空气在一塔内经加压吸附后产生氮气，而另一塔在解吸再生，两塔交替循环，即可不断地得到纯度为98－99.9%的廉价氮气。

The combination of these two contrivances achieved recycle of nitrogen oxides and made lead chamber process become mature.

这两项发明的结合，实现了氧氮化物的循环使用，使铅室法制酸工艺基本成熟起来

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。