氮沉降能引起土壤酸化,同时造成土壤盐基离子淋失。
N deposition can acidify the soil and leaching the exchangeable base cations.
采用含硫醇基的螯合剂转化聚苯乙烯基离子交换纤维,开发出一种制备螯合物纤维的简单方法。
The polystyrene based ion exchange fiber is converted by chelating agent containning thiol, which develops a simple method that can make chelating fiber.
建立了等离子体基离子注入过程中试样温度预测的理论模型,应用这个模型进行了一系列数学模拟。
A theoretic model for prediction of sample temperature during plasma based ion implantation was established, and computer simulation was done with the model.
本文用等离子体基离子注氮技术(N -PBII)对AZ31镁合金进行了表面改性处理,并在部分注氮样品上沉积dlc膜。
In this paper, magnesium alloy AZ31 has been treated by nitrogen-plasma based ion implantation (N-PBII). And we deposited DLC on a part of the nitrogen-implanted samples.
2-降冰片基阳离子已经由多种降冰片烷衍生物和试剂制成。
The 2-norbornyl cation has been made from a variety of norbornane derivatives and reagents.
水合壳在十二烷基苯磺酸钠(SDBS)头基与阳离子之间的相互作用中起着重要作用。
The hydration shell plays an important role in the interactions between the sodium dodecyl benzene sulfonate(SDBS) headgroup and the cation.
当阳光照射在纳米管上时,纳米管释放出高能量的载荷子,使得水分子分解为两种活性成分-氢氧自由基和氢离子。
When light falls on the nanotubes, they release energetic charge carriers, which split the water molecules inside them into two reactive components - hydroxide radicals and hydrogen ions.
大海溅起浪花,因而使海洋空气中富含负氢离子,抵消自由基(阳离子)带电粒子,增强我们的吸氧能力。
Sea spray – and, therefore, sea air – is full of negative hydrogen ions, charged particles that neutralise damaging free radicals (positive ions) and improve our ability to absorb oxygen.
李子干里的果酸(neochlorogenic andchlorogenic acids)含量极高,是抗击“超氧阴离子自由基(superoxide anionradical)”特别有效的抗氧化剂。
Prunes contain high amounts of neochlorogenic and chlorogenic acids, antioxidants that are particularly effective at combating the \ "superoxide anion radical."
晶片等离子体加工室的结构设置成使反应性自由基与放置在晶片等离子体加工室内的晶片表面上的物质反应。
The wafer plasma processing chamber is configured to react the reactive radical with a species at a surface of a wafer disposed in the wafer plasma processing chamber.
李子干含有的大量新绿原酸和绿原酸,是对付“过氧化阴离子自由基”特别有效的抗氧化剂。
Dried plums contain high amounts of neochlorogenic and chlorogenic acids, antioxidants that are particularly effective in combating the " superoxide anion radical".
它是化学里唯一值得研究的东西,它就是降樟基阳离子的问题!
It's the only problem worth working on in chemistry. It's the norbornyl cation problem!
我们根据实验结果并借鉴前人的经验,指出低聚物阳离子自由基向单体的链转移是诠释这一切问题的关键。
We find that the chain transfer reaction between oligomeric radical cations and monomers is the key to elucidate these questions.
用AM 1半经验方法,优化了吲哚和苯酚中性分子、正离子自由基和负离子自由基的几何构型。
The geometries of neutral indole and phenol, as well as their cation radicals and anion radicals, have been optimized by using AM1 method.
在低离子强度介质中,基粒垛叠能打开这是一个有意思的性质。
Grana stacks have the interesting property of unfolding in low ionic strength medium.
研究了芳族自由基负离子裂解反应中沿着反应坐标两个势能超曲面可能存在交叉点的问题。
The possible existence of a crossing point between two potential hypersurfaces along the reaction coordinate for the cleavage reactions of aromatic radical anions is studied.
甲基丙烯磺酸钠除提供强极性的阴离子磺酸基外,还起链转移剂作用;
Methllyl sulfonic acid acted as a chain transfer agent besides supplying the strong polar anionic sulfonic group.
探讨了自由基与非平衡等离子体脱硝过程中自由基的产生机制及反应过程;
The creation mechanism and reaction process of free radicals in denitration process using free radicals and non-equilibrium plasma were discussed.
结果发现用NOS自旋捕捉剂可检测到该体系所产生的超氧阴离子自由基。
It was found that the superoxide radicals could be detected by NOS in the above system.
试验研究了钛铝基合金离子渗碳后的渗层组织结构、渗碳温度和时间对渗层厚度、表面硬度的影响。
The surface hardness, carburized structure and thickness of the carburized layer on the TiAl-alloy obtained through the different carburization technologies was studied.
目的探讨核桃仁清除超氧阴离子自由基(O·-2)的能力。
Objective it is to discuss the ability of walnut clearing oxygen free radical (o · -2).
该PP基阴离子交换纤维可用于定量回收溶液中微量的钯。
Trace palladium in the solution can be quantitatively recovered by this PP based anion exchange fiber.
采用羟基官能度不同的马来酸酐改性蓖麻油(MCO),合成了一系列软段含有离子基的聚氨酯水分散液(MCPU)。
A series of aqueous polyurethane dispersions (MCPU) with ionic groups in the soft segments were prepared with maleic anhydride modified castor oil (MCO) of various hydroxyl functionality.
发现热处理、钠离子中毒以及吡啶吸附等不同预处理方法均对正离子基生成有显著的影响。
Such pretreatments as calcination, sodium poisoning, and pyridine adsorption all have significant influences on the formation of radical-ions.
从染色饱和值看,具有多磺酸基的阴离子染料在季铵化改性亚麻织物上易发生超当量吸附。
Anion dye with several sulfonic groups occurs adsorption of overtaking in the number of mole when dyeing modified flax fabric.
结果表明,不同器官组织中活性氧与抗超氧阴离子自由基含量各异。
Results showed that content of ROS and ASAFR vary between different organs and tissues.
结果表明,不同器官组织中活性氧与抗超氧阴离子自由基含量各异。
Results showed that content of ROS and ASAFR vary between different organs and tissues.
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