查询词典 ether

After homogenate and centrifugation, the fat existing in liver was removed by diethyl ether. Then, the pH of the remaining aqueous layer was adjusted to 11.6 and clenbutamol was extracted using diethyl ether. The mobile phase component A was 50mmol/L phosphoric acid – 30mmol/L triethylamine and the pH was adjusted to 4.0 with 2mol/L sodium hydroxide.

此外，又将含有盐酸克伦特罗的猪肝用匀浆机匀浆，用1mol/L盐酸溶出其中的盐酸克伦特罗，再用乙醚去除盐酸溶出液中的脂肪后，用2mol/L氢氧化钠调节溶出液pH为11.6，用乙醚萃取其中的克伦特罗。

Purposes:With ethanol, ethyl ether, chloroform, benzene, ether and other immiscible oil, and with some solvents can be formed azeotrope.

用途：与乙醇、乙醚、氯仿、苯、石油醚等混溶，并与可其中一些溶剂形成共沸物。

Firstly,saponifying of caustic potash and fatty acid ether esters to convert partial neutral fatty acid soap to emulsifier,and adding sucrose together as emulsifier,making sucrose and fatty acid ether esters come to moloten state at lower temperature,further making interesterification turns out sucrose fatty acid esters at homogeneous phase .

首先使苛性钾与脂肪酸乙酯反应生成部分中性皂作为乳化剂，并加入一定量的蔗糖，使蔗糖和脂肪酸乙酯在较低温度下既可达到相溶状态，进而在均相下发生酯交换反应合成蔗糖酯。

The method involves exposing the cells to a compound having the formula I in which: w is a nucleic acid x is a non-amino acid or non-peptide nucleic acid binding group y is a spacer having a chain length equivalent to 1-30 carbon-carbon single covalent bonds or is absent R4 is H or halogen or CH2O-R3; and R1, R2 and R3 are the same or different and are either hydrogen, methyl, ethyl, alkyl, alkenyl, hydroxylated alkyl, hydroxylated alkenyl groups or ether containing alkyl, alkenyl, hydroxylated alkyl or hydroxylated alkenyl groups optionally being an acyl group having a carbon chain length equivalent to 3-24 carbon atoms saturated or unsaturated, with the proviso that at least one of R1, R2 or R3 includes a group having a carbon chain of 3-24 carbon atoms saturated or unsaturated, or to a compound having the formula II in which: w is a nucleic acid x is a non-amino acid or non-peptide nucleic acid binding group y is a space having a chain length equivalent to 1-30 carbon-carbon single covalent bonds or is absent, R5 is alkyl, alkenyl, hydroxylated alkyl, hydroxylated alkenyl group or ether containing alkyl, alkenyl, hydroxylated alkyl or hydroxylated alkenyl group optionally being an acyl group having a carbon chain length equivalent to 3-24 carbon atoms saturated or unsaturated, with the proviso that R5 includes a group having a carbon chain of 3-24 carbon atoms saturated or unsaturated.

该方法包括使细胞暴露于具有式的化合物，在式中：w是核酸，x是非氨基酸或者非肽核酸结合基团，y是具有等于1―30个碳―碳单共价键的链长的间隔基或者不存在，R4是H或者卤素或者CH2O－R3；R1、R2和R3是相同的或者不同的并且是氢、甲基、乙基、烷基、链烯基、羟基化烷基、羟基化链烯基或者包含烷基、链烯基、羟基化烷基或羟基化链烯基的醚，任选地是来源于具有等于3―24个碳原子的碳链长的饱和或不饱和脂肪酸的酰基，其条件是R1、R2或者R3的至少一个包括具有3―24个碳原子的饱和或不饱和碳链的基团，或者使细胞暴露于具有式的化合物，在式中：w是核酸，x是非氨基酸或者非肽核酸结合基团，y是具有等于1―30个碳―碳单共价键的链长的间隔基或者不存在，R5是烷基、链烯基、羟基化烷基、羟基化链烯基或者包含烷基、链烯基、羟基化烷基或羟基化链烯基的醚，任选地是具有等于3―24个碳原子的饱和或不饱和碳链的链长的酰基，其条件是R5包括具有3―24个碳原子的饱和或不饱和碳链的基团。

Faraday's law is that when the flux in the conductor loop changes, it produces electromotive force in the conductor loop, and obeys to contour integral law , Maxwell Curl Theory is that when the magnetic intensity of a certain point in ether space changes, there produces electric field at that point in ether space, which is the field mutual production theory of "electric field produces magnetic field and magnetic field produces electric field" in the free space which everybody is familiar with, and it obeys differential law , Lorentz magnetic force is that when metal electrons cut magnetic lines, metal electrons forced by move along the conductor to form inductive current, in fact, it doesn't matter whether coil moves or magnet moves, only if there exists relative motion between magnetic field and conductor, metal electrons must cut magnetic lines, which is,"coil stills while magnet moves to the left" and "magnet stills while coil moves to the right" these two situations are the same, which both belong to metal electrons having cut magnetic lines.

法拉第定律指导体环路里的磁通量发生变化时，在导体环路上产生电动势，而且服从围线积分律；麦克斯韦旋度理论指以太空间某点的磁场强度发生变化时，在以太空间的该点产生电场，即大家熟知的自由空间里"电场生磁场与磁场生电场"之互生场理论，而且服从微分律；洛伦兹磁力指金属电子切割磁力线时，金属电子受力沿着导体漂移而形成感应电流，其实，无论线圈运动或是磁铁运动，只要磁场与导体存在相对运动，则金属电子必然切割磁力线，即，"线圈静止而磁铁向左运动"与"磁铁静止而线圈向右运动"这两种情况是一样的，都属于金属电子切割了磁力线。

Ether particles also are the media of electric field, between the opposite charge Ether particles in infinitesimal distance the rule of attracting is not meet the Coulomb's law, the strong interaction is the special situation of the electric field in the infinitesimal distance, it is not a new interaction.

以太是电场的介质，相反电荷在极小距离上产生的吸引作用并不满足库仑定律，所谓的强相互作用是电场极小距离时的特殊情况，并不是一种特殊的作用。

In the titration experiment of NMR and IR spectroscopy, we can understand how sensors binding with metal ions: the two carbonyl group and crown ether group cooperated in binding with metal ions. Furthermore, by altering the "oxygen" atoms of crown ether to "sulfur", we can change the binding affinity to the soft metal: cupper. It shows 60-fold enhancement of fluorescence.

在化合物2中，我们引进了硫原子在冠状醚中，则应对电子密度较低之金属有较好的结合能力，实验结果显示了此分子对铜离子有相当好的选择性和结合能力，萤光增加可达60倍；同时由红外光吸收光谱和核磁共振光谱滴定实验可确知，香豆素衍生物上的两个羰基对金属离子的选择性及结合上扮演相当重要的角色。

The present invention relates to the depolymering cyclization reaction of aromatic dithio ether polymer to prepare aromatic cyclic dithio ether compound under the presence of mercapto group containing compound and alkali matter.

本发明涉及利用芳香双硫醚聚合物的解聚成环反应来制备芳香双硫醚环状化合物的方法。该方法采用芳香双硫醚聚合物在含巯基的化合物和碱性物质存在的条件下发生解聚成环反应生成双硫醚环状化合物。

With a twin-screw extruder to prepare polypropylene / 8 ether bromide pellet, and injection molding into sheet samples, quantitative analysis of different PP / 8 the sample surface, eight bromine bromine ether ether precipitation changes with time, Using X-ray photoelectron spectroscopy on the sample surface concentrations of bromine atoms ...

用双螺杆挤出机制备了聚丙烯/八溴醚粒料，并注塑成片状样品，定量测定了不同PP/八溴醚样品表面上八溴醚析出量随时间的变化，用X-射线电子能谱对样品表面溴的原子浓度。。。

This step is irreversible.(3) Phenyl isopropyl ether is very difficult to oxidize in dark, exhibiting different behavior from isopropyl ether and benzyl isopropyl ether.

3发现苯基异丙醚难以进行暗氧化，与异丙醚和苄基异丙醚醚表现出不同的暗氧化行为。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。