查询词典 alkaline reaction

Based on the reaction between metoclopramide,alkaline luminol and potassium ferrocyanide to produce chemiluminescence,a new chemiluminescence system with flow injection technology for the determination of metoclopramide has been proposed in this paper.

基于在碱性条件下，甲氧氯普胺能够与鲁米诺和亚铁氰化钾产生化学发光的现象，结合流动注射技术，建立了测定甲氧氯普胺的化学发光新体系。

For most piercing-sucking insects, they will secrete gell saliva and watery saliva when they feed on plants. The gell saliva will be secreted at the early stage of feeding to form salivary sheath, which is supposed to surround and protect the stylet. This saliva can help piercing-sucking insects to feed on plants directly and indirectly. Meanwhile, the watery saliva contains many components like pectnase, cellulose, polyphenol oxidase, peroxidase, alkaline phosphatase, sucrase, etc. These components can help piercing-sucking insects in plant tissue penetration, food digestion, detoxification of plant secondary substances and break-down of plant defence reaction.

对多数刺吸式昆虫而言，他们取食时会分泌胶状和水状两种唾液，其中胶状唾液会在取食早期分泌形成唾液鞘来围绕并保护口针，通过直接和间接的作用来帮助取食；而水状唾液中则包含了果胶酶、纤维素酶、多酚氧化酶、过氧化物酶、碱性磷酸酯酶、蔗糖酶等组分，来帮助刺吸式昆虫对植物穿刺、消化食物、解毒次生物质并破坏植物的防御反应。

The two—step sulfomethy lation and the reaction with HOCH〓SO〓Na in sulfite cooking were illustrated in this paper. The optimum technological conditions were determined on the basis of suitable amount of HCHO in sulfite pulping. The differences of delignification and paper properties of wheat straw were also studied in SFP—AQ and alkaline sulfite and AQ cooking .

对麦草粉的两步法磺甲基化反应以及与羟甲基磺酸钠的反应进行了研究，解释了甲醛在亚硫酸盐蒸煮中脱木素作用机理，从理论上确定了甲醛在SFP—AQ蒸煮中的适宜用量，并据此提出了合理的蒸煮工艺和最佳工艺条件。

A novel flow-injection post-chemiluminescence method for the determination of maleic hydrazide was presented for the first time,based on the post-chemiluminescence reaction of maleic hydrazide in the alkaline luminol-potassium periodate system.

基于马来酰肼在高碘酸钾-鲁米诺碱性体系中的后化学发光反应，结合流动注射技术，首次建立了测定马来酰肼的流动注射-化学发光新方法。

The results show that the decomposition rate of ammonium jarosite can reach 98.03% under the following optimum conditions, which are m m=0.381 41, temperature 60 ℃, liquid-solid ratio 21, reaction time 2 h. During the alkaline decomposition, the impurity elements, such as Zn, In, Cu, Cd, Pb, Sb, Sn and Ag are left in the residue, while As is leached into the pregnant solution as AsO43 with leaching rate of 83.36%.

结果表明：在 m m=0.381 41、温度60 ℃、液固比21、反应时间2 h的最优条件下，铁矾渣的分解率达到98.03%，而原料中的杂质金属，如Sn、Sb、Zn、In、Cu、Cd、Pb和Ag等绝大部分留在分解渣中，As则以AsO43的形态大部分进入溶液，浸出率达到83.36%。

I The band reaction model of silicon in alkaline solutions in the fundamental theory of silicon anisotropic etching, which has great theoretical and experimental significance in the field of micromechanics.

论文的创造性成果主要体现在：（1）所建立的硅在碱性腐蚀液中的反应模型，从根本上解释了硅各向异性腐蚀的重大基础理论问题，为微机械的基础研究做出了开创性的贡献。

The high purity of 2-mercapto-β-naphthothiazole was obtained with α-naphthylamine as raw material via reaction of seal glass tube, alkaline extraction, vapor distillation, acidification of acetic acid and ethanol recrystallization.

以α-萘胺为起始原料，通过封管反应、碱提取、水蒸气蒸馏、乙酸酸化和乙醇重结晶，取得了纯度较高的2-巯基－β-萘并噻唑。

As a representative alkaline aggregate, nepheline was selected and the effect of it on the expansion of alkali-silica reaction was studied.

以霞石正长岩为代表，研究了含碱集料对碱-硅酸反应膨胀的影响。

After alkaline hydrolysis, the hair sample (10 mg) was extracted with pentane, and analyzed by liquid chromatography-tandem mass spectrometry with electrospray ionization and multiple reaction monitoring.

将10 mg样品碱水解后加入戊烷提取，然后进行LC-MS/MS分析，采用正离子电喷雾电离、多反应监测模式测定，方法的最低定量限为25 pg/mg。

The thermodynamics and the dynamics mechanism have been studied.The results show that it is advisable for the HCHO and NaH_2PO_2 as the reduction due to the electrode potential of the reduction is more negative than that of Cu~ 2+ from the analysis of data in thermodynamics.It is advantage for the reaction of electroless copper in the alkaline solution. According to the analysis of Tafel slope of a cathodal polarization curve,...

结果表明：从热力学数据分析看，还原剂的电极电位皆比铜离子负，用甲醛、次亚磷酸钠做还原剂还原Cu2+在热力学上是可行的，在碱性溶液中对化学镀铜反应有利；从阴极极化曲线的Tafel斜率分析看，Cu2+=Cu+步骤为阴极反应的速度控制环节；从镀液的旋转圆盘电极测试结果分析看，电子跃迁步骤H2CO-ad rdsHCOOH+1/2H2+e-为镀液中阳极反应速度的控制性步骤。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。