Effects of FACE on denitrification activity in paddy-field soil.;
开放式大气CO_2浓度增高对水稻土反硝化活性的影响
Effects of heavy metal contamination on the population and its denitrification activity of denitrifying bacteria (DNB) were investigated after Huangsong, purple and red paddy soils were treated with Cd2+、As5+、Cu2+ and Pb2+ for four weeks under laboratory conditions.
在实验室条件下,研究Cd2+、As5+、Cu2+和Pb2+处理黄松稻田土、紫色稻田土和红壤稻田土后,4周内重金属污染对反硝化细菌种群数量及其反硝化活性的影响。
Mechanical activation effects on crystal structure and chemical reaction activity of maize starch;
机械活化对玉米淀粉结晶结构与化学反应活性的影响
Study on chemical reaction activity of corn starch with non-crystallized granule state;
非晶颗粒态玉米淀粉的化学反应活性研究
The chemistry, reactivity sites and bond-formation characteristics of kaolinite surfaces were investigated by using quantum chemistry methods.
而其最低空轨道则主要由硅、铝和少量的侧面O原子组成,相对而言,能级较低,易于与提供电子的体系作用,其化学反应活性较大。
A study on the reactivity and hot─deformation characteristics of briquettes has been made toanalyze the reasons of the high reactivity and advantageous hot-deformation characteristics of briquettescompared with raw coal.
对型煤的化学反应活性和热变形特性进行了研究，分析探讨了型煤较原煤化学反应活性高及热变形特性好的原因，并通过试验给出了：１）烟煤与无烟煤配比，成型工艺、活性剂、粘结剂对提高型煤化学反应活性的定量结果；２）烟煤与无烟煤配比、钙硫比、外形尺寸、粘结剂，升温过程对改善型煤热变形特性的定量结果。
Variation of the crystalline structure of coal char during pyrolysis and its effect on gasification reactivity;
热解过程中煤焦微晶结构变化及其对煤焦气化反应活性的影响
Effects of pyrolysis pressure and atmosphere on gasification reactivity of Shenfu char;
热解压力及气氛对神府煤焦气化反应活性的影响
The chemical reactivity, extreme pressure (EP) and antiwear (AW) properties of binary additive systems were investigated using hot-wire method and four-ball test machine.
利用热丝法和四球试验机研究了二元添加剂体系的化学反应活性和极压抗磨性,并用俄歇电子能谱仪分析了试验后细铁丝和钢球磨痕表面的元素组成。
The Relationship Between Organic Compounds Stability and Reaction Activity;
有机化合物的稳定性与化学反应活性浅析
They differ in solubility and chemical reactivity.
它们在溶解度和化学反应活性上有差别。
Emission characterization and ambient chemical reactivity of volatile organic compounds(VOCs)from coking processes
炼焦过程挥发性有机物排放特征及其大气化学反应活性
Tending to participate readily in reactions.
活性的，化学性质活泼的容易参加化学反应的
Research on Characterization of Chemical Reactive Hazards
化学品活性反应危险性表征方法研究
On Relationship Between the Stability of Activated Intermediate in Organic Chemical Reaction and the Activity of Reaction;
有机化学活性中间体稳定性与反应活性的关系
Studies of Biological Activity and Kinetic Chemical Reaction of Active Compounds from Neem Seeds;
印楝活性物质生物特性与化学反应动力学研究
Electrochemical Synthesis and Application of Ultrafine Bi～*;
超细金属铋的电化学制备及其反应活性的研究
(chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst.
（化学）一种阻碍化学反应或减少催化剂活性的物质。
THE KINETICS OF THE COMBINATION REACTION BETWEEN ENZYME AND SUBSTRATE--Ⅰ.STOCHASTIC ANALYSIS,ACTIVATION ENERGY AND MULTIPLE-ACTIVE-SITE
酶—底物结合反应的动力学——Ⅰ.随机分析、活化能与多活性中心
The fluidized-bed electrochemical reactor is a new type of electrocbemical reactor cbaracterized by large active surface and high mass transter coefficient.
流化床电化学反应器是一种新型的电化学反应器,具有活性面积大、质系数高等优点。
Preparation of Starch Polyether Polyols Catalyzed by HPA;
杂多酸催化合成淀粉聚醚多元醇及其反应中间体稳定性及反应活性的量子化学研究
kinetics Characteristics of α- Pinene Isomerization Catalyzed by Activated Carbon Supported Phosphotungstic Acid;
活性炭固载磷钨酸催化α-蒎烯的异构化反应的动力学特征研究
The Active Sites and Kinetics Study of CO Oxidation over CuO-CeO_2 Catalysts
CuO-CeO_2催化剂的CO氧化活性位及反应动力学的研究
Study on the Determination of Chemical Reaction Speed and Activation Energy;
化学反应速度及活化能测定实验研究
" Enzyme: Substance that acts as a catalyst in living organisms, regulating the rate at which life's chemical reactions proceed without Being altered in the process."
酶:在活性生物体中起催化剂作用的物质,它调节化学反应中的反应速率而自身不被改变。
A QUANTITATIVE RELATIONSHIP BETWEEN MOLECULAR STRUCTURE AND CHEMICAL REACTIVITY--Ⅲ.ADDITION REACTION OF ALIPHATIC NITRILES AND METHANOL
分子结构与化学活性间的定量关系——Ⅲ.脂肪腈与甲醇的加成反应
Studies of Metal Complex Reacting with DNA by Electrochemical and Spectra Method;
电活性金属络合物与DNA反应的电化学与光谱研究