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Two synthetic routes starting from 1,3-dihydroxyacetone and formamidine acetate as well as imidazole-4,5-dicarboxylic acid as starting material were investigated, and the reductive reaction of ethyl imidazole-4-carboxylate was also investigated.

本文对以1，3-二羟基丙酮和醋酸甲脒为原料和以4，5-二羧酸咪唑为原料合成4(5)-羟甲基咪唑的两条工艺进行了研究并优化，同时对4(5)-羧酸咪唑乙酯的还原反应进行了探索性实验。

The synthesized PCU was then characterized by infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, small-angle X-ray scattering, and tensile strength measurement. The IR showed that the polymer synthesized by the above two methods both have the polycarbonate-urethane structure and the tensile measurement showed good mechanical performance of the polymer. The DSC and TGA data showed that there is an obvious soft-hard glass transition area, which indicated the existence of the micro-phase separation structure. The extent of the phase separation was affected by the ratio of starting materials, the molecular weight of PCD, and the polymerization method. The decomposition upon heating was observed in two steps. SAXS result showed that the radius (r_2), the distance between domains (d_2), and gyral radius (R_2) of hard segment micro-domain were fairly affected by the starting materials ratio and soft segment content.

IR结果表明两种方法合成的聚合产物均具有聚碳酸酯聚氨酯的结构；拉伸实验表明聚合产物具有良好的力学性能；DSC、TG结果表明，聚合物呈现出较为明显的软硬段玻璃化转变区，表明存在微相分离的结构，相分离的程度受原料配比、软段分子量、聚合方法的影响，其热分解分为明显的两个阶段； SAXS结果表明，聚合物原料配比、软段含量的变化对硬段微区回旋半径R_2，微区间距d_2，微区半径r_2影响不大其值分别为9.5(A|°、29、7.4，但对软段的微区半径及间距影响较大，随着软段含量的增大，软段微区的半径r1和间距d1都增大。

In this paper, firstly using natural fatty acids including lauric acid, myristic acid, palmitic acid etc. and disproportionated rosin as starting materials, the acyl reaction of starting materials with SOCl_2 respectively, and then using Schotten-Baumann condensation: on the reaction conditions of alkalescence, condensation of acylchloride with amino acid (sarcosine, glycine, alanine etc.), and then acidification, saltation. A series of anionic surfactants of N-acyl amino: sodium N-fatty acyl sarcosinate (SFS-12, SFS-14, SFS-16); sodiun N-fatty acyl glycinate(SFG-12, SFG-14, SFG-16); sodium N-fatty acyl alaninate(SFA-12, SFA-14, SFA-16)and sodium N-disproportionated rosinoyl aminatewere prepared. During the preparation of N-acylamino acid, the reaction conditions of acylchloride with amino acid condensation were identified by optimizing the synthetic conditions of N-lauroyl sarcosine: mol ratio of amino acid to acylchloride 2:1, reaction taken place in a solvent composed by acetone/water 2:1, acylchloride and 20% NaOH were slowly added to the reaction mixture at the same time while maintaining the pH at 9~10, after completion of adding maintaining reacting for 2.5h at 25℃.

首先以月桂酸、肉豆蔻酸、棕榈酸等天然脂肪酸和歧化松香为原料，与氯化亚砜反应制得酰氯，然后采用Schotten-Baumann 缩合法路线，即在碱性条件下，酰氯和氨基酸(肌氨酸、甘氨酸、丙氨酸等)缩合，经过酸化、成盐，合成一系列氨基酸型阴离子表面活性剂：脂肪酰肌氨酸钠，即月桂酰肌氨酸钠(SFS-12)、肉豆蔻酰肌氨酸钠(SFS-14)、棕榈酰肌氨酸钠(SFS-16)；脂肪酰甘氨酸钠，即月桂酰甘氨酸钠(SFG-12)、肉豆蔻酰甘氨酸钠(SFG-14)、棕榈酰甘氨酸钠(SFG-16)；脂肪酰丙氨酸钠，即月桂酰丙氨酸钠(SFA-12)、肉豆蔻酰丙氨酸钠(SFA-14)、棕榈酰丙氨酸钠(SFA-16)；N-歧化松香酰基氨基酸钠(sodium N-disproportionated rosinoyl aminate)，即N-歧化松香酰基肌氨酸钠(sodium N-disproportionated rosinoyl sarcosinate ，简称SDRS)、N-歧化松香酰基甘氨酸钠(sodium N-disproportionated rosinoyl glycinate，简称SDRG)、N-歧化松香酰基丙氨酸钠(sodium N-disproportionated rosinoyl alaninate，简称SDRA)。

In this paper, arrangement scheme of a novel multi-star phase shifted pole changing coil was given and the methods to determine coil split ratio were analyzed. According to electromagnetic theory, 2D electromagnetic mathematical model in which stator windings were spitted coil was developed, and magnetic field distribution of the novel motor at starting was solved by finite element method, starting performance of motor was calculated. Based on energy method, rotor slot leakage reactance under different poles and different loads were calculated, and the variation of rotor slot leakage reactance with loads was gotten. Based on time-step finite element method, distribution of branch current in stator windings and operating performance were calculated and analyzed when branch was unbalance, the method to calculate circulating loss in stator windings of novel multi-star phase shifted pole changing motor was given, and the effects of the loads variation and degree of unequilibrium on circulating loss in stator windings were calculated and analyzed.

论文系统的给出了采用分裂线圈法新型多星形移相变极绕组的排列方案，进一步分析线圈分裂比的确定方法；根据电磁场理论，建立了定子为分裂线圈绕组的电机二维电磁场数学模型，并采用场路耦合法求解了新型多星形移相变极电机起动时的磁场分布，计算了电机起动性能和基于能量法计算了不同极数下起动时转子槽漏抗和不同负载时转子槽漏抗，得出转子槽漏抗随负载变化的规律；采用时步有限元法计算分析了定子绕组支路不平衡时支路电流的分布情况及运行性能，给出了新型多星形移相变极电机定子绕组环流损耗的计算方法，分析比较了负载的变化和支路不平衡度大小对定子绕组环流损耗的影响。

E. , starting mean current and minimum, mean and maximum starting torques.

根据SR电机的矩角特性，给出了起动性能的计算方法。

In this paper, back to back starting and static frequency convertor starting of pumped storage motor-generator are studied. A computer simulation method, which is more close to practice taking into account effect of mechanical torque developed by the turbine, opposing torque of the unwatered runner of motor, transformer and transmission line is adopted.

本文对抽水蓄能电动发电机组两种常用的启动方式：背靠背启动、静止变频器启动进行了研究，从工程实际出发，考虑了水轮机输入转矩、水泵阻转矩曲线，及线路、变压器等参数的影响，进行启动过程的计算机仿真计算，对影响启动过程的重要因素进行了深入分析，得到了一些重要结论。

Starting from the right of equality, Rawls animadverts utilitarianism and substitutes it for "two principles as fairness and justice" in which rational people choose under the "original position", and thinks everyone should be equal and people should distribute wealth according to "the principle of justice as fairness", unless you have the enough reasons that can justify everyone should be unequal. He understands the distributive object as a series of public resources and systems of liberty, including the positions and offices, opportunity, natural endowment, honor, safety, freedom of life and action, freedom of thought and conscience. The aims of distributive principle of justice are to realize rational distribution of these public resources in a cooperative and well-ordered society. Starting from inalienable rights of man, Nozick thinks that everyone should be unequal, unless you have sufficient reasons that can justify everyone should be equal and without the consent of the individual, others can not infringe upon his property and rights with any excuses. He advances the justice of "holding" with a theory of qualification and entitlement, and maintains individual economic and free rights and the right of property.

罗尔斯从平等的权利出发，通过&原初状态&下的理性人自主选择&公平正义的两个原则&来取代功利主义，认为除非有充足理由证明应当不平等，否则就应当平等，并根据公平的正义原则分配公共资源和自由体系，包括职务、机会、天赋、荣誉、安全、人生行动自由、思想自由和良心自由等，&分配的正义观&就是要实现这些公共资源在一个合作且秩序良好的自由体系里的合理分配；诺齐克从人的不可剥夺的权利出发，认为除非你有充足理由证明应当平等，否则就应当不平等，没有个体的同意，任何人也不能以任何借口侵犯他的财产和权利，通过&资格&理论确立&持有&的正当性，维护个人的经济自由权利和财产权利。

In order to study the breakage of starting cut in the working face under the special conditions of big span,soft,fragmentized roof with high stress,the paper gives a detailed analysis of the breakage causes of starting cut with bolting under the special conditions in 2313 face,No.

为了研究大跨度、松软破碎顶板、高应力等特殊条件下的工作面切眼冒落问题，对该特殊条件下的荆各庄矿11煤层2313工作面锚杆支护切眼的冒落原因进行了详细分析。

As for the indirect financing, build perfect banking system, improve the credit vouching system and finance secured system, set up developing funds and funds of starting an enterprise; as for direct investment, we should build up the multilevel direct financing system which is based on starting enterprise market including venture investment market, firm bond market.

解决中小企业的融资问题是一个庞大的系统工程，此工程的核心部分在于中小企业自身融资能力的增强，基础部分在于政府的积极且恰当的干预和支持。中小企业在国民经济中的特殊地位和存在的弱点，需要由政府出面进行适度干预和支持。

In order to solve the problem of engine starting characteristics calculation under windmilling condition, a generalized format of engine starting nonlinear mathematical model based on liner-in-parameters model was given.

针对高空风车条件下航空发动机起动性能估算问题，给出了用线参数模型描述发动机风车起动非线性过程的一般形式，利用约简遗传规划算法进行模型结构选择的思路，建立了基于约简遗传规划的航空发动机起动性能计算模型。

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。。。。