Design study for the cascaded HGHG experiment based on the SDUV-FEL

Cascading stages of high-gain harmonic generation(HGHG) free electron laser(FEL) is a promising way to produce fully coherent X-ray radiation.As a test facility for modern FEL R&D,the Shanghai deep ultraviolet FEL(SDUV-FEL) is now under upgrading for the cascading two stages of HGHG experiment.Since the energy of the electron beam is as low as about 185 MeV after upgrade,the total harmonic number of this two stages HGHG is only 2×2,and the wavelength of the final radiation is 196.5 nm which is the 4th harmonic of the 786 nm seed laser.With help of three-dimensional simulation codes,design studies on the FEL physics for the cascaded HGHG experiment are present based on the parameters of the upgraded SDUV-FEL facility.It is found from the simulation results that the part of the electron beam which has been used in the first stage can still generate powerful radiation in the radiator of the second stage,and this radiation will be difficult to be separated from the radiation generated by the fresh part of the electron beam.To overcome this problem,a novel method based on the energy spectrum of the electron beam is proposed in this paper to demonstrate the "fresh bunch" technique.     

Application of C5-C13 light hydrocarbons in depositional envlrOnment diagnosis

Based on the geological background and Gammacerane/C31H(S+R)ratios,source rock depositional environments of the studied oil samples(194)from 13 oilfields were classified into three groups according to salinity:saline-lacustrine facies,fresh to brackish lacustrine facies(including linmetic facies),and semi-saline to saline facies(including marine facies of the Tarim Basin).C5-C13 compound groups in the crude oils were separated by GC,and about 286 compounds were qualitatively analyzed.The geochemical application of the C6-C13 compound groups and their ratios between each group with individual carbon number was investigated.Our studies show that(1)C6-C13 compound groups and their ratios in the crude oils could serve as new reliable parameters for oil-oil correlation because the C6-C13 light fractions are the major oil component,especially in light oil or condensate,in which they account for almost 90%of the whole oil;(2)the compound groups of C7 light hydrocarbons in oils derived from different depositional environments with different salinity have different characteristics;(3)C6-C13 compound groups and ratios may be affected by other factors such as maturity,but they are mainly controlled by salinity of depositional waters.     

维生素C的结构、性质及在烹调中的变化

本文主要阐述了维生素C的结构，性质及在烹调中的变化。     

保形映照法与断裂问题的解析解（‖）

对宏观断裂力学的应用以及复变函数法特别是其中的保形映照法的作用做了一个较全面的回顾和评述，介绍了近来作及其所在的研究课题小组在这方面做的一些工作。特别强调了讨论纯裂纹问题及其分析解的重要理论意义。     

一个现代综合银行业务处理系统的设计与实现

介绍了一个现代的综合银行业务处理系统的设计思想和实现技术．该系统采用目前国内外银行系统业务处理先进思想，以ＩＢＭＡＳ／４００计算机为主机，以ＷＩＮＤＯＷＳＮＴ网络为前台工作站，利用目前国内较为流行的计算机软件技术开发完成．整个系统在综合帐务处理、综合客户信息管理和综合柜员制模式下，完成对公、对私、国际业务、金融卡、同业往来、内部核算等银行业务的集中处理；提供柜台业务、电话银行、网点客户终端、企业／家庭银行、ＡＴＭ存取款、ＰＯＳ等服务手段；实现了辖内资金实时清算、异地私人储蓄通存通兑、异地对公资金实时到帐的电子联行     

脱硫添加剂的酸法制备及性能研究

催化添加剂脱硫技术是控制重油催化裂化装置再生器烟气中的排放最为经济而有效的方法。利用Ｘ－光衍射和微型反应器评价装置，系统研究酸法制备的镁铝尖晶石及其固溶液（ＭｇＡｌ２Ｏ４·ｘＡｌ２Ｏ３·ｙＭｇＯ）组成、结构和脱硫活性之间的关系，并对酸、碱法制备组成相同的样品结构和脱硫性能进行了对比讨论。     

Hardy算子交换子在加权中心Morrey空间中的有界性

本文首次引入了加权λ-中心Morrey空间以及加权λ-中心有界平均振动空间,得到了具有粗糙核的高维Hardy算子交换子在此类空间中有界性.我们的结果推广了Fu,Lu和Zhao的结论.     

白花夏枯草对高原家兔骨髓各级幼红细胞Feret直径的研究

本文应用透射电镜技术对平原移居高原（海拔３９００米）实验家兔骨髓内各级红系细胞电镜照片的费莱特直径（Ｆeret)进行了研究，实验分平原对照组，高原给药及高原对照三个组，实验结果：高原给药组骨髓原红，早、中，晚幼红细胞Ｆeret直径均低于高原对照组，差别有显著性，结果提示白花夏枯草可降低由低氧引起的各级幼红细胞胸体增大，从而降低血液的粘滞性，改善血循环。     

SIMAN在炼钢生产仿真中的应用

炼钢生产过程是一个典型的离散事件系统。本文详细分析了该过程 ,并给出其四个主要子系统的Petri网模型 ,在此基础上 ,用SIMAN语言对某炼钢厂进行了实例研究。