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The test bedstand which is composed of electro-motor ,hydraulic pump ,hydraulic motor ,speed verily box and parallel compensating pump, can resolve the problem of power consumption and the power warm while large power hydraulic pump and motor testing.the principle of system is that electro-motor drive the hydraulic pump first,then the pump make the hydraulic motor work through its high pression oil,the follow working hydraulic motor feedback the power in niuju re-drive the hydraulic pump,at last the power is recovered.this bedstand make use of bishi hydraulic system ,which can have a closely construct ,and steadly chuandong ,lower noise ,high power recovery percentage and so on.

本实验台由电动机、油泵、油马达和变速箱以及并联补油泵等一起构成功率反馈实验油路,以解决大功率液压泵及马达在试验时的大功率消耗和能量耗散时的发暖问题。实验台由电动机带动油泵,油泵输出油液驱动液压马达,油马达输出的扭矩通过变速箱传动来回馈给液压泵的输渗入渗出轴,从而实现功率往返收。采用闭式液压系统,结构紧凑、运行平稳、噪声低、功率回收率高;机械补偿,电动机输渗入渗出扭矩经变速箱传动驱动液压泵;液压补偿,并联补油泵对系统的高压油路入行流量补偿。

The test bedstand which is composed of electro-motor hydraulic pump hydraulic motor speed verily box and parallel compensating pump can resolve the problem of power consumption and the power warm while large power hydraulic pump and motor testing.the principle of system is that electro-motor drive the hydraulic pump firstthen the pump make the hydraulic motor work through its high pression oilthe follow working hydraulic motor feedback the power in niuju re-drive the hydraulic pumpat last the power is recovered.this bedstand make use of bishi hydraulic system which can have a closely construct and steadly chuandong lower noise high power recovery percentage and so on.

本实验台由电动机、油泵、油马达和变速箱以及并联补油泵等一起构成功率反馈实验油路,以解决大功率液压泵及马达在试验时的大功率消耗和能量耗散时的发热问题。实验台由电动机带动油泵,油泵输出油液驱动液压马达,油马达输出的扭矩通过变速箱传动回馈给液压泵的输入轴,从而实现功率回收。采用闭式液压系统,结构紧凑、运行平稳、噪声低、功率回收率高;机械补偿,电动机输入扭矩经变速箱传动驱动液压泵;液压补偿,并联补油泵对系统的高压油路进行流量补偿。

In this thesis,the AM1,MNDO,MINDO/3(mainly AM1)and INDO/S-CI semiempirical MO methods were used toinvestigate the excited-state intramolecular protontransfer reactions of salicylic acid derivatives—salicylic acid,methyl salicylate,salicylaldehyde,o-hydroxyaceto-phenone,salicylamide and 3-hydroxy-picolinamide (6 conformers and 2-3 anion species);2-(2'-hydroxy-5' methylphenyl) benzotriazole(4 conformers),2-(2' hydroxyphenyl) benzimidazole (3 conformers and 3anion species),Bis-2,5-(2-benzoxazolyl)hydroquinone(3 conformers),2-(2'-hydroxyphenyl)benzothiazole(2conformers) and 7-azaindole dimer (2 conformers).Theinvestigations were described as follows.Geometry optimization,relative stability andhydrogen bonding energy First,for sylicylic acid derivative molecules,the AM1,MNDO and MINDO/3 methods were used toinvestigate ground-state geometry optimization,energies,relative stabilities and hydrogen-bondingenergies on the five kinds of the molecules(designing 6 conformers and 2-3 anion species).Comparing with experimental data,the optimizedgeometry,the order of stability,the hydrogen-bonding energies and the distances between O-O in O-H..O hydrogen bonds by AM1 method were in agreementwith the experimental data,however,the C-C bondlengths optimized by MNDO and MINDO/3 were longer,C-O and O-H bond lengths were shorter;for C-N bondlengths,the results opitimized by MNDO method werethe same as those by AM1 method,nevertheless the C-Nbond lengths given by MINDO/3 method were muchshorter.For some sylicylic acid derivatives(e.g.methyl salicylate,salicylamide),the order ofstabilities on the conformers given by MNDO andMINDO/3 methods were not in agreement with theexisting conformers deduced by experimental methods,and the hydrogen bonding energies calculated by MNDO.and MINDO/3 methods were smaller.Second,the studyon the other systems found that the optimizedgeometry of the proton-transfered product with INDOmethod could not be obtained,only could theoptimized geometry of reactant be obtained,and thecalculated hydrogen bonding energies were greater.Many results of calculation indicated that the studyon the excited-state intramolecular proton transferreaction system using AM1 method was suitable andreliable.

本论文用AM1、MNDO、MINDO/3(主要是AM1)和INDO/S-CI半经验分子轨道方法对水杨酸衍生物系列——水杨酸、水杨酸甲酯、水杨醛、O-羟基乙酰苯酮、水杨酰胺和3-羟基吡啶酰胺(6种异构体和2-3种阴离子);2-(2'-羟基-5'-甲基苯基)苯并三〓唑(4种异构体);2-(2'-羟基苯基)苯并咪唑(3种异构体和3种阴离子);2,5-二间氮杂氧茚氢醌(3种异构体);2-(2'-羟基苯基)间〓杂硫茚(2种异构体)和7-〓吲哚二体(2种异构体)的激发态分子内质子转移反应在以下几个方面进行了较系统的理论研究:几何构型优化和相对稳定性及氢键能首先以水杨酸衍生物系列分子为例,用AM1、MNDO和MINDO/3方法考察了5种分子(每种分子设计6种异构体和2-3种阴离子)的基态几何构型优化,能量、相对稳定性和氢键能计算,通过和实验数据进行比较,AM1方法给出的优化几何构型、稳定性次序、氢键能和O—H。。。O氢键的0—0距离与实验数据吻合最好,MNDO和MINDO/3方法优化的C-C键长偏长,C-O键和O-H键长偏短;对于C-N键长,MNDO和AM1优化结果差别不大,而MINDO/3给出了过短的C-N键长,MNDO和MINDO/3方法给出的有些水杨酸衍生物分子(如水杨酸甲酯和水杨酰胺)异构体的稳定性次序和实验上推测的可存在异构体结果不一致,MNDO和MINDO/3方法给出的氢键能偏低,对其他体系的研究发现INDO方法常常不能得到质子转移产物的优化几何构型,只能得到反应物的优化构型,并且估算的氢键能偏高,大量的计算结果表明AM1方法对本论文研究的激发态分子内质子转移反应体系是适宜和可靠的。

It is found that a series of pure-silica, mesoporous silicas and AlPO4 polymorphs are energetically, at most, 15 kJ·mol-1 higher than quartz and berlinite, and the entropies of a series of pure silica zeolites span a very narrow range at 3.2—4.2 J·K-1·mol-1 above quartz.

研究数据表明一系列纯硅分子筛、介孔材料和磷酸铝多孔材料同相应的石英相和块磷铝矿相相比能量上最多只高出15 kJ·mol-1。

Today, many believe that certain places on earth, such as Lourdes, France, and Sedona, Arizona, owe their healing powers to naturally high levels of this qi, or biomagnetic energy.

今天,很多人相信在地球的某些地方,例如洛伦索马克斯,法国,塞多纳,亚利桑那州受惠于自然的高水平的气或者叫生物磁能量。

The experiment two: enzyme preparation significantly improved average daily gainand feed conversion ratio (P<0.05). Enzyme preparation significantly increased energymetabolizability and digestibility of crude fiber, crude protein and neutral detergent fiber,but had no remarkable effect on digestibility of dry matter, crude fat and acid detergentfiber. Enzyme preparation significantly decreased the relative viscosity of duodenal andjejunal digesta. The pH of intestine had no noticed difference in all groups. Enzymepreparation significantly decreased relative weight of gizzard, proventficulus, duodenum,jejunum and ileum. Enzyme preparation significantly increased villus size of duodenumand jejunum, and villus to crypt ratio of duodenum and ileum significantly increased too.Enzyme preparation considerably decreased ileal crypt height (P<0.05), and didn"t affectthickness of intestinal wall. Supplementing enzyme preparation, the serum glucose, totalprotein and alanine aminotransferase, but enzyme preparation hadn"t noticed influenceupon uric acid, total cholesterol, triglyceride and high-density lipoproteins. Enzymepreparation significantly increased insulin, triiodothyronine and insulin-like growthfactor-Ⅰ. Adding enzyme preparation, the percentage of thyroid stimulating hormone andgrowth hormone in the serum increased 16.44%, 19.18% and 18.84%, 21.74%respectively, and the percentage of glucagon and thyroxine decreased 12.07%, 14.36% and 13.79%, 15.40%, but failed to reach statistical significance (P>0.05). Enzymepreparation significantly increased (P<0.05) the trypsin and amylase activity of duodenaland jejunal digesta, but enzyme preparation didnt affect significantly (P>0.05) theintestinal lipase activity and pancreatic digestive enzyme. Enzyme preparation had nosignificant effect on caecal microbial population.

试验二:酶制剂显著提高平均日增重和饲料转化率(P<0.05);酶制剂显著提高能量代谢率及粗纤维、粗蛋白、中性洗涤纤维消化率(P<0.05),而对干物质、粗脂肪、酸性洗涤纤维消化率影响不显著;酶制剂显著降低十二指肠和空肠食糜相对粘度(P<0.05);添加酶制剂对肠道pH影响不显著;酶制剂显著降低肌胃、腺胃、十二指肠、空肠、回肠相对重(P<0.05),显著提高十二指肠和空肠绒毛高度,显著增加十二指肠和回肠绒毛高度/隐窝深度,降低回肠隐窝深度(P<0.05),对肠壁厚度影响不显著;酶制剂显著提高血清葡萄糖、总蛋白和谷丙转氨酶浓度(P<0.05),对尿酸、总胆固醇、甘油三酯及高密度脂蛋白浓度影响不显著,显著提高胰岛素、T_3、IGF-Ⅰ水平,添加酶制剂后,促甲状腺激素、生长激素分别提高16.44%、19.18%和18.84%、21.74%,胰高血糖素和T_4分别降低12.07%、14.36%和13.79%、15.40%,但差异不显著;酶制剂对胰腺消化酶活性影响不显著,显著增加十二指肠和空肠胰蛋白酶、淀粉酶活性,对小肠脂肪酶活性影响不显著;酶制剂对盲肠微生物菌落数影响不显著。

The results show that, all the three methods can effectively correct the frequency, the energy centrobaric correction has the lowest precision and the ratio correction is the fastest and its precision is almost not affected by the change of signal to noise ratio.

结果表明:3种算法都可以使信号的频率更接近于真实值,其中能量重心法校正精度相对较低,比值法和相位差法精度较高,尤其是比值校正算法处理速度更快,校正的精度基本不受信噪比的影响。

Basic principles of energy centrobaric correction,ratio correction and phase difference correction were expounded.

结果表明:3种算法都可以使信号的频率更接近于真实值,其中能量重心法校正精度相对较低,比值法和相位差法精度较高,尤其是比值校正算法处理速度更快,校正的精度基本不受信噪比的影响。

Under the influence of different types of bait Solen strictus energy for growth from low to high by the order for the algae Nitzschia closterium, Chlorella, Dunaliella, the algae, algal flat; feeding algae growth to the highest flat.

不同饵料种类影响下长竹蛏用于生长的能量由低到高所排列的藻类为新月菱形藻,小球藻,盐藻,金藻,扁藻;投喂扁藻生长能最高。

When end surface is neglected, the reflective energy will return to the filament efficiently if the filament is at the centre axis of the columniform lamp shell. 3 Compared with the straight tungsten filament that has a smooth surface, the helical one obtains higher absorbance which can achieve 0.6~0.7 under the actual screw pitch measurement.

当灯的管径为10 mm,而灯丝外径为1.5 mm时,节能可达12%到13%。2)对圆柱形灯外壳,在不考虑端面影响时,光源的灯丝若处于外壳的中心轴上,则反射的能量会有效地返回灯丝。3)螺旋结构的灯丝比表面光滑的直钨丝有更高的吸收率,灯丝绕成螺旋后在现行的螺距尺寸下吸收率能达到

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She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场,你等着挨绳子吧!

Several theories about reigniting and extinguishing of the arc have been refered.

本文综合考虑了几种电弧重燃和熄灭理论。