查询词典 ar-methoxy-benzylidene

Benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene]dichloro(2-methylpyridine)ruthenium (62), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] dichloro(2,4-dimethylpyridine)ruthen ium (63) introduce ortho substituted pyridine as dissociating ligand to weaken Ru-N bondand accelerate dissociation of pyridine derivative ligand through steric hindrance.

在钌卡宾配合物[1，3-二-(2，6-二甲苯基)-4，5-二氢咪唑基]-苯亚甲基-(2-甲基吡啶)-二氯合钌(62)，1，3-二-(2，6-二甲苯基)-4，5-二氢咪唑基1-苯亚甲基-(2，4-二甲基吡啶)-二氯合钌(63)中，邻位取代的吡啶作为解离配体，通过邻位基团的空间效应削弱钌-氮配位键，使配体更易解离，提高了催化剂的初活性。

Two novel soluble poly, poly [(3-butyrylpyrrole-2, 5-diyl) p-nitrobenzylidene] and poly [(3-butyrylpyrrole-2, 5-diyl)(3-hydroxy-4-methoxy) benzylidene], were synthesized firstly by condensation of 3-butyrylpyrrole with p-nitrobenzaldehyde and vanillin, respectively.

通过3-丁酰基吡咯单体分别与对硝基苯甲醛和香草醛的缩聚反应，成功合成了两种新型可溶性聚吡咯甲烯衍生物－策［（3-丁酰基吡咯－2，5-二）对硝基苯甲烯］和聚［（3-丁酰基吡咯－2，5-二）（3-羟基－4-甲氧基）苯甲烯］。

Void CMyEdit :: OnCh-ar (UINT nCh-ar , UINT nRepCnt , UITN nFlags ){//Determine if nCh-ar is an alphabetic character.

下例说明了如何显示字母字符，如果字符是字母字符，则调用CWnd OnCh-ar，否则不调用

The effect of tribology factors on bearing vibration is studied experimentally. AR model and WPT are used to processing the normal arid abnormal signals. The results are as follows:1. The vibration of ball bearings is caused by the tribology action of contact pairs of ball and ring races and has the essential of tribo-dynamics. Any factors affecting the tribology characteristics of contact pairs will affect vibration and noise of bearings consequently.2. Vibration characteristics of bearing keep almostly unchanged with the increasing of axial load expecting the increasing of nature frequencies. When radial load increasing with axial load unchanged, nature frequencies keep unchanged but some new vibration peaks appears in the spectrum.3. Vibration amplitudes are damped and nature frequency are enhanced with sufficient lubrication. Vibration and noise of bearings increase obviously and roar can happen and the contact surfaces scratch slightly under insufficient and unclean lubrication state. Bearing will be disabled in a few minutes without any lubrication.4. Bearing vibration is unstable under low speed. With the speed increasing, the vibration become stable and natural frequencies increase slightly but the amplitudes increase apparently.5. Bearing vibration can be excited only by some harmonics ofwaviness without lubrication and by all harmonics with lubrication based on the theoretical analysis.6. The nature frequencies of ball bearings decrease with the increasing sizes. When international clearance increasing, nature frequencies decrease in radial and increase in axial and angular and the amplitudes increase in radial and decrease in axial and angular. When the number of balls increasing, nature frequencies increase and amplitudes decrease. When the pitch diameter increasing, axial nature frequency increase and others nearly keep no change. When outer race groove curvature radius increasing, nature frequencies increase in radial and decrease in axial and angular and amplitudes keep no change in radial and increase in axial and angular. When inner race groove curvature radius increasing, nature frequencies decrease and amplitudes increase.7. The distortion in amplitude and frequency components of bearing vibration signals picked up by the present probe measurement method is founded and right conclusions cannot be achieved by the signals. When accelerometer is rigidly screwed with steel stud onto a flat outer surface of a ball bearing, vibration signal can be got without distortion and the reliability of research on bearing vibration is assured.8. AR model is suitable for large samples of bearing vibration signals, square root of length of samples can be used as the upper limitation of order determination and the FPE order selection criterion is effective. Many advantages of AR spectrum are founded over the classical based on FFT.9. Time-Frequency analysis is necessary for abnormal noise of ball bearings. WPT overcomes the principle shortcomings of STFT and proved to be a best tool to process the abnormal signals.

理论分析和试验研究表明： 1球轴承振动是钢球—滚道接触副中的各种摩擦学作用引起的，具有摩擦动力学的本质，任何对接触副的摩擦学特性有影响的因素都将对球轴承的振动和噪声特性产生影响； 2中心轴向载荷作用下，载荷增大使球轴承的固有振动频率升高，载荷越大同样的载荷增幅引起的频率升幅减小，足够大的中心轴向载荷作用下载荷的变化对球轴承振动的频率特性不会产生明显的影响； 3轴向和径向联合载荷作用下，径向载荷不大时球轴承振动的固有频率基本不变，但是可能引起变刚度激励的非线性振动，出现新的频峰，过大的径向载荷将使部分钢球脱离接触，使球轴承的振动和噪声呈现不稳定状态； 4润滑对球轴承的振动和噪声特性有重要的影响，良好的润滑对振动有明显的抑制作用，润滑不充分时，振动和噪声的水平会有明显增高，一定条件下还会激发接触副中的谐振，发出啸声，造成接触表面的伤害，无润滑干接触时，短时的运转就会损伤接触副表面，使振动和噪声迅速增大，并随时可能引发严重的磨损和卡滞失效；接触副润滑良好时，油膜的"刚化效应"使球轴承振动的固有频率有所提高，润滑剂中含有弥散性污浊时，振动的幅度总体升高，但弥散性污浊不会改变球轴承振动的频率特性；浙江大学博士学位论文：球轴承振动的研究 5低速时，球轴承振动的基本特征呈现不稳定状态，随着转速的提高，球轴承振动的频率特性趋于稳定，固有频率频峰升高； 6理论分析表明，干接触时钢球和滚道表面波纹度的某些谐波分量能激励球轴承的振动，振动的幅值与谐波幅值成正比，实际球轴承中钢球的分布不可能完全均匀，波纹度的激励作用会随时发生；润滑接触的分析表明，波纹度的任意谐波分量均能激励球轴承的振动； 7球轴承的几何和结构参数分析表明，球轴承尺寸越大，径向、轴向和角振动的固有频率越低；钢球中心圆直径增大，球轴承的径向和轴向振动的固有频率基本不变，角振动的固有频率有所上升，振动的幅频特性基本不变；径向游隙加大使球轴承的径向振动固有频率降低，轴向和角振动的固有频率有所升高，径向振动幅频特性的幅值升高，而轴向和角向降低；钢球的数量增多使球轴承振动的固有频率上升，幅频特性的幅值下降，径向振动的幅值下降最为明显；外圈沟曲率半径系数增大使球轴承径向振动的固有频率升高，轴向和角振动的固有频率降低，径向幅频特性基本不变，轴向和角向幅频特性幅值升高；内圈沟曲率半径系数增大使径向、轴向和角振动固有频率均下降，振动幅频特性的幅值均有升高； 8试验对比表明，传感器采用探针式安装时，由于探针接触副接触特性的影响，钡(量得到的球轴承振动信号有失真，采用专门设计和制作的试验球轴承，以固定式安装加速度计，首次测量得到了球轴承振动的真实信号，通过对振动信号的分析，验证了球轴承振动的理论模型； 9)基于时间序列分析的AR模型适用于大样本球轴承振动信号的分析，以样本长度的均方根值作定阶上界，FPE做判阶准则，给出的AR谱光滑，频率分辨率高，是球轴承振动分析的简便而可靠的手段； 10以时频域分析的小波包变换分析球轴承异音信号能够比较好地定位和聚焦异音发生的时间，时间间隔，频率范围，同样是球轴承振动分析的可靠的手段，可用作球轴承故障诊断技术。

The results indicated that the diffusibility of AR and dissolvability of resin and asphaltene in AR were enhanced by adding HCO and LCO additives,the HDM performance of AR was improved,among which the improvement of hydrodenickel revealed a distinct advantage over hydrodevanadium;Afte...

结果表明，HCO和LCO添加剂的加入，可改善渣油在反应过程中的扩散性能，促进渣油中沥青质的溶解，从而提高渣油的HDM性能，其对加氢脱镍性能的提高更优于加氢脱钒。

Animals in AR and Dex group were sensitized with egg albumin, and in NC group were treated with normal saline as control. After sensitization and reproduction of AR model, rats in AR group received no treatment, while those in Dex group were treated with dexamethasone（5mg/kg, once a day） for 5 days.

NC组为对照组，用生理盐水替代卵蛋白进行同步处理；AR组为变应性鼻炎无干预组；Dex组为变应性鼻炎地塞米松干预组，动物建模后腹腔注射地塞米松注射液（5mg/kg）治疗，每天1次，连续5d。

In the experiment, a powder pressedboard whose concentration of W, Mo, Co was 35%, 20%, 45% seperately was regarded as a source pole. Under the hollow cathode effection of incordinate voltage, the Ar atom was ionized to Ar+. Then the source pole and the specimen one were cleaned by a great amount of Ar+. Their temperature was increased to about 1100℃.

利用不等电位空心阴极放电效应，真空条件下被电离的Ar~+离子同时轰击源极和工件极，源极上的合金元素被溅射出来，在强烈的电场作用下，吸附到受轰击而得到清洁的工件表面上。

A important result is the one-order expression of AR Yt = DYt-1 + E, from paralleling a high-order differential equation transformation into a one-order differential equation system, the one-order expression exposes that the AR is only a certain more-multivariable power series processAnd, if a process is described as an AR, the sufficient and necessary condition is the spectrum norm A of the coefficient matrix D less than one.

作者用高阶微分方程化一阶微分方程组的方法，获得多元弱平稳序列p阶自回归模型的一步滑动平均表达式，证明了AR的是一个更高维的幂级数的线性过程，从而，说明了AR关于序列依概率成立的充要条件是：该模型更高维的幂级数的线性过程的表达式中系数矩阵D的谱范数λ＜1。

To explore the possibility that the androgen may facilitate differentiation of hair follicle stem cells into sebocytes, we carried out experiments to test this hypothesis. The concrete steps to carry out this research were as follow: Firstly, observed the expression of AR and examined the expression of AR mRNA of rat vibrissa follicle stem cells in vivo in three defined phases of a hair follicle cycle, including anagen, catagen and telogen. Secondly, cultured HFSC deprived from vibrissa follicle bulge region in culture flasks and observed the expression of AR, ketertin 15 (K15), cluster of differentiation 34 (CD34) andβ1-integrin of those cells.

为了探索雄激素对毛囊干细胞定向分化为皮脂腺细胞的过程是否具有促进功能，我们进行了如下的实验来进行研究：第一步，检测了在毛囊周期的三个不同时期(生长期、退化期和静止期)中大鼠触须毛囊干细胞中AR、ARmRNA的表达以及检测原代培养的毛囊干细胞中AR的表达并探讨意义，为进一步研究打下基础。

Seen from clinical effect, haemodynamics and general condition both better in rats treated with dexamethasone than rats treated with saline. We had a presumption on these grounds that the sum of negativity myodynamia generated byβ3-AR up-regulation andα1-AR down-regulation possibly less than positive myodynamia generated byβ1-AR up-regulation. 5 For patients with DCHF, adding prednisone to the usual care resulted in significant relief of the congestive symptoms, which was accompanied with a potent diuresis with time and an improvement in renal function.

从临床效果来看，地塞米松治疗的心衰大鼠在血流动力学及一般状况上，都明显优于注射生理盐水的心衰大鼠，据此推测，β3受体上调和α1受体下调产生的负性肌力之和可能弱于β1受体上调产生的正性肌力。5对于失代偿的充血性心力衰竭病人，在心衰常规治疗基础上加用强的松这种糖皮质激素能显著缓解充血症状，并伴随着强有力的利尿和改善肾功能的作用。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。