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A Spatiotemporal－Chaos－Based Encryption Having Overall Properties Considerably Better than Advanced Encryption Standard

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Communications in Theoretical Physics 2003年第1X期40卷 57-61页

作者： WANGShi-Hong yewei-ping LOHua-ping KUANGJin-Yu LIJing-Hua LUOYun-Lun HUGang ScienceSchool BeijingUniversityofPostsandTelecommunicationsBeijing100876China DepartmentofElectronics BeijingNormalUniversityBeijing100875China DepartmentofPhysics BeijingNormalUniversityBeijing100875China TheKeyLaboratoryofBeamTechnologyandMaterialModificationofMinistryofEducation BeijingNormalUniversityBeijing100875China

Spatiotemporal chaos of a two-dimensional one-way coupled map lattice is used for chaotic *** chaotic outputs of many space units are used for encryption simultaneously. This system shows satisfactory cryp-tographie properties of high security, fast encryption (decryption) speed, and robustness against noise disturbances in communication channel. The overall features of this spatiotemporal-chaos-based cryptosystem are better than chaotic cryptosystems known so far, and also than currently used conventional cryptosystems, such as the Advanced Encryption Standard (AES).

关键词：混沌同步时空混沌保密通讯加密通信安全

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试析《乞力马扎罗的雪》中的象征艺术

白城师范学院学报 2023年第6期37卷 56-59,76页

作者：郑如薇叶伟平福州工商学院文法学院福州350001

《乞力马扎罗的雪》是美国现代著名作家海明威最具代表性的经典作品之一,小说运用了大量的象征手法,使小说包含了丰富的象征意蕴,表现了作者对生命的渴求、对人灵魂永恒的探究。文章从象征手法的界定、象征手法的表象及运用象征手法的... 详细信息

《乞力马扎罗的雪》是美国现代著名作家海明威最具代表性的经典作品之一,小说运用了大量的象征手法,使小说包含了丰富的象征意蕴,表现了作者对生命的渴求、对人灵魂永恒的探究。文章从象征手法的界定、象征手法的表象及运用象征手法的意义三个方面对小说的象征艺术进行挖掘。象征手法的运用使小说结构更加完整、主题更加深刻,给读者带来更明晰的感悟和更触及灵魂的震撼。

关键词：《乞力马扎罗的雪》海明威象征艺术

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基底节钙化的病因及临床特点

中国基层医药 2016年第24期23卷 3822-3825页

作者：张汉华周烨威周平荆门市康复医院神经内科湖北省荆门448000

基底节钙化是一种少见的神经变性疾病，其病理改变主要为双侧基底节区钙化斑。患者大多以锥体外系症状为首发症状，还可表现为小脑功能失调、语言障碍、痴呆、癫痫和神经精神症状等，部分患者可终生无症状。基底节钙化目前尚无特效方法... 详细信息

基底节钙化是一种少见的神经变性疾病，其病理改变主要为双侧基底节区钙化斑。患者大多以锥体外系症状为首发症状，还可表现为小脑功能失调、语言障碍、痴呆、癫痫和神经精神症状等，部分患者可终生无症状。基底节钙化目前尚无特效方法可治疗或延缓疾病进展，且药物大多数效果不佳或耐受性较差。该研究就其病因、发病机制、病理变化、影像学表现、临床特点及治疗方法做一综述。

关键词：脑血管基底神经节疾病特发性综合征

Effects of bifenthrin on Daphnia magna during chronic toxicity test and the recovery test

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Journal of Environmental Sciences 2004年第5期16卷 843-846页

作者： yewei-hong WENYue-zhong LIUWei-ping WANGZhong-qiang InstituteofEnvironmentalSciences ZhejiangUniversityHangzhou310029China InstituteofFeedScience ZhejiangUniversityHangzhou310029China

The acute and chronic toxic effects of bifenthrin on Daphnia magna were studied. The results showed that 24 h-EC 50 , 48 h-LC 50 and 96 h-LC 50 of bifenthrin on D. magna were 3.24, 12.40 and 1.40 μg/L respectively. And the LOEC and NOEC of bifenthrin were 0.02 and 0.004 μg/L respectively. The recovery test of bifenthrin on Daphnia magna was presented. Daphnia magna(F 0 generation) were exposed during 21 d to different bifenthrin concentrations. Offspring(animals from the first and third brood: F 1(1st) and F 1(3rd), respectively) were transferred to a free pesticide medium during a 21 d recovery period. In this recovery study, survival, growth, reproduction(mean total young per female, onset of reproduction and number broods per female) and the intrinsic rate of natural increase (r) were assessed as parameters. Reproduction such as number of young per female as well as length was still reduced in F 1(1st) generation daphnids from parentals(F 0) exposed to the bifenthrin. However F 1(3rd) individuals from parentals exposed to pesticide concentrations were able to restore reproduction when a recovery period of 21 d was allowed, but the length of F 1(3rd) from parentals exposed to the 0.5 and 0.75 μg/L bifenthrin concentration was still significantly effected(P<0.05).

关键词： bifenthrin Daphnia magna parental generation(F 0) F 1(1st) and F 1(3rd) recovery test toxic test

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灵异胶囊对DPN多元醇通路的影响

上海中医药大学学报 1999年第3期13卷 23-26页

作者：丁学屏叶伟成沈远东虞芳华张明钱尚统上海中医药大学附属曙光医院上海200021 上海香山中医医院上海200022

用灵异胶囊治疗糖尿病周围神经病变 (DPN) ,以期观察其对DPN的多元醇通路紊乱的调节作用。临床研究 ,选择符合DPN诊断标准的 90例门诊和住院病人 ,分成灵异胶囊组 6 0例 ,益气养阴复方组 3 0例。结果显示 :灵异胶囊的总有效率为 88.3 % ... 详细信息

用灵异胶囊治疗糖尿病周围神经病变 (DPN) ,以期观察其对DPN的多元醇通路紊乱的调节作用。临床研究 ,选择符合DPN诊断标准的 90例门诊和住院病人 ,分成灵异胶囊组 6 0例 ,益气养阴复方组 3 0例。结果显示 :灵异胶囊的总有效率为 88.3 % ,中药对照组为 76 .7% ,治疗后的红细胞山梨醇含量有非常显著的下降 (P <0 .0 1) ,与对照组比较有显著差异 (P <0 .0 5 )。实验研究采用STZ诱发的迟发型糖尿病大鼠神经病变模型 ,分别予以灵异胶囊、益气养阴复方和弥可保治疗。结果表明 :模型组大鼠的血红细胞山梨醇值和晶体醛糖还原酶活性有明显的升高 ,经灵异胶囊治疗后有显著的下降 (P <0 .0 1) ,且优于两对照治疗组。结论 :灵异胶囊可有效地调节DPN时的多元醇代谢通路的紊乱 ,这可能是其疗效机制之一。

关键词：糖尿病周围神经病变(DPN) 中医疗法灵异胶囊红细胞山梨醇(RBCS) 醛糖还原酶

Construction of Hsp90β gene specific silencing plasmid and its transfection efficiency

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Frontiers of Medicine 2007年第3期1卷 253-257页

作者： JI yewei NIE Bin LI ping XU Xiaoyu ZHOU Yuanguo Molecular Biology Center Research Institute of Surgerythe Third Military Medical UniversityChongqing 400042China College of Pharmacology Chongqing University of Medical ScienceChongqing 400016China Department of Experiment Chongqing University of Medical ScienceChongqing 400016China

The purpose of this work was to construct the plasmid that could direct the synthesis of siRNA-like transcripts and thus mediate strong and specific repression of human heat shock protein 90β(Hsp90β)gene expression and to compare the transfection efficiency of the plasmids in varying conditions of *** 64 nt oligos corresponding to different regions of the target gene were chemically synthesized and annealed and were then ligated with pSUPER EGFP1 plasmid and double-digested with HindIII and *** plasmids were transformed into Escherichia coli,DH5a,and the colonies were picked and grown in the *** presence of positive clones was checked by the means of endodigestion and *** cell strains,HepG2,Human umbilicus vein endothelium cells(HUVEC)and HeK293,were *** the plasmids were transfected into the cells at different ratios of plasmid to *** transfection efficiency was measured by detection of enhanced green fluorescence protein(EGFP).The presence of positive recombinant clones were verified by double-digestion and *** bases inserted into the plasmids were correct and the positive colonies were named pSuper-Hsp90β1,pSuper-Hsp90β2 and pSuper-Hsp90β*** optimizing the ratio of plasmid to Lipofectamine,we achieved high transfection efficiency in HeK293 *** efficiency was still low in the HepG2 *** conclusion,the si-RNA-synthesizing plasmids targeting Hsp90βwere constructed and transfected into cells with different transfection efficiency.

关键词： HSP90 heat-shock proteins RNA interference transfection

Dehalogenation of benzofuran derivatives

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Dehalogenation of benzofuran derivatives

2013年中国药学大会暨第十三届中国药师周

作者： Wang Zunyuan Yang yewei Ma Zhen Zhang ping Huang Wenhai Liang Meihao Shen Zhongrong Zhejiang Academy of Medical Sciences

Benzo[b]furan derivatives are of considerable interest because of their widespread occurrence among natural products and their physiological properties. They are also key starting materials for the synthesis of various medical products[1-6]. A halogen atom, useally bromo or ido, is often introduced to a given position of an arene or a heterocyclic compound to make them as a blocking group[7–11]. Occasionally, it is introduced from the side reactions[12]. So, the dehalogenation is an important chemical transformation in organic synthesis and environmental remediation[13-15]. Many dehalogenation methods have been developed by employing palladium as the catalysts recent years[16], because palladium catalyst is a very stable, inexpensive, and readily commercially available. However, to the best of our knowledge, most of the reported methodologies are using aryl halides, especially aryl chlorides[17-20], and a few dehalogenation methods were performed in the heterocyclic, especially in benzo[b]furan derivatives. Here we report the first use of palladium acetate in the presence of phosphine ligands to remove the halogen atom in benzo[b]furan derivatives. Using 3-bromo-2-butyl-5-methanesulfonylaminobenzofuran as a model compound, and palladium acetate as the catalyst, various phosphine ligands（1-5） were screened in the precence of K 3 PO 4 in toluene, at a temprature of 100 ℃ for 48h. The ligand 3 was found to be the best in high conversion of almost 100%. The chemically combined water of K 3 PO 4 ·2H 2 O crystallization was assumed as the the hydrogen source in the reaction. The reaction was repeated and confirmed by other seven benzo[b]furan bromides. Scheme 1 summarizes our preliminary results for these debromination reactions.

关键词： dehalogenation benzofuran catalysis

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海藻纤维棉涤纶三组分混纺纱性能研究

上海纺织科技 2019年第3期47卷 21-23页

作者：楚旭东隋淑英张瑞何叶伟朱平青岛大学纺织服装学院山东青岛266071 青岛大学功能纺织品与先进材料研究院山东青岛266071 省部共建生物多糖纤维成形与生态纺织国家重点实验室山东青岛266071 海洋生物质纤维材料及纺织品山东省协同创新中心山东青岛266071

海藻纤维具有吸湿透气、抗菌除臭等特性。为了扩大其应用范围,对海藻纤维与棉、涤纶进行三组分纺纱试验,研究了混纺比对其拉伸性能、毛羽和条干均匀度的影响。结果表明,随着海藻纤维含量的提高,纱线强伸性下降,毛羽指数上升;纱线条干均... 详细信息

海藻纤维具有吸湿透气、抗菌除臭等特性。为了扩大其应用范围,对海藻纤维与棉、涤纶进行三组分纺纱试验,研究了混纺比对其拉伸性能、毛羽和条干均匀度的影响。结果表明,随着海藻纤维含量的提高,纱线强伸性下降,毛羽指数上升;纱线条干均匀度与混纺纤维整齐度有关,整齐度越高,条干越均匀。其中海藻纤维/棉/涤纶混纺比为20/65/15时纱线物理性能较好,适合实际应用。

关键词：海藻纤维棉纤维涤纶混纺纱线拉伸性能毛羽条干均匀度

聚酰胺-胺改性黏胶纤维活性染料染色动力学研究

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印染助剂 2019年第3期36卷 28-31页

作者：何叶伟隋淑英蒋之铭楚旭东朱平青岛大学功能纺织品与先进材料研究院青岛大学纺织服装学院青岛大学纤维新材料及现代纺织国家重点实验室培育基地海洋生物质纤维材料及纺织品山东省协同创新中心山东青岛266071

选用活性深蓝K-R研究聚酰胺-胺(PAMAM)改性黏胶纤维的无盐染色动力学,并与黏胶纤维常规染色工艺进行对比。通过测定上染速率曲线,计算出半染时间、平衡上染率、比染色速率常数和扩散系数等。结果表明,随着PAMAM树状分子质量分数的增加,... 详细信息

选用活性深蓝K-R研究聚酰胺-胺(PAMAM)改性黏胶纤维的无盐染色动力学,并与黏胶纤维常规染色工艺进行对比。通过测定上染速率曲线,计算出半染时间、平衡上染率、比染色速率常数和扩散系数等。结果表明,随着PAMAM树状分子质量分数的增加,半染时间逐渐下降,活性深蓝K-R在黏胶纤维上的初始上染率、平衡上染率和比染色速率常数都逐渐增大;当PAMAM质量分数达到10%时,可以实现黏胶纤维的无盐染色,染色后断裂强度稍有下降,但影响不大。

关键词：活性染料染色动力学聚酰胺-胺黏胶纤维无盐染色