Studies on Iltani's Letters: Translation and Analysis

卡腊那是公元前19－18世纪存在于两河流域北部台拉发尔地区的古国。上世纪70年代，在此出土了一批楔形文字泥板文献。这批楔形文字泥板中的两百多件是卡腊那城邦王后伊勒塔尼的书信。本文在释读这批书信的基础上，从家庭、政治和经济几方面分析伊勒塔尼王后的社会角色与地位。 本文主要分为三部分。 第一章，在家族—家庭层面上分析：伊勒塔尼扮演着家族成员供养者、奴仆调派者等角色；在家庭关系中，处于服从的地位。 第二章，在政治—宗教层面上分析：伊勒塔尼在政治宗教事务中，是一个十分活跃的王后。 第三章，在经济—社会层面上分析：伊勒塔尼广泛参与社会经济各个领域的管理工作，扮演了社会生产的实际组织者和执行者...Karana is a city-state of the ancient Mesopotamia during 19-18th century BC, which located present Telafar in the north of Iraq. In 1970s, some cuneiform tablets were excavated there. About two hundreds of them were the letters by Iltani the queen of Karana. On translating and comprehending the letters, the article covered the queen Iltani’s social role and status in the family, politics and econo...学位：历史学硕士院系专业：人文学院历史学系_世界史学号：1022005130013

Carbon arc production of heptagon-containing fullerene[68]

通讯作者地址: Xie, SY (通讯作者),Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Xiamen Univ, Fujian Prov Key Lab Theoret & Computat Chem, Xiamen 361005, Peoples R China 4. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem Engn, Xiamen 361005, Peoples R China 电子邮件地址: [email protected], [email protected], [email protected] carbon heptagon ring is a key unit responsible for structural defects in sp(2)-hybrized carbon allotropes including fullerenes, carbon nanotubes and graphenes, with consequential influences on their mechanical, electronic and magnetic properties. Previous evidence concerning the existence of heptagons in fullerenes has been obtained only in off-line halogenation experiments through top-down detachment of a C(2) unit from a stable fullerene. Here we report a heptagon-incorporating fullerene C(68), tentatively named as heptafullerene[68], which is captured as C(68)Cl(6) from a carbon arc plasma in situ. The occurrence of heptagons in fullerenes is rationalized by heptagon-related strain relief and temperature-dependent stability. (13)C-labelled experiments and mass/energy conservation equation simulations show that heptafullerene[68] grows together with other fullerenes in a bottom-up fashion in the arc zone. This work extends fullerene research into numerous topologically possible, heptagon-incorporating isomers and provides clues to an understanding of the heptagon-involved growth mechanism and heptagon-dependent properties of fullerenes.NNSF of China 21031004 21021061 20973137 20876127 973 Program 2007CB815300(1,7) 2011CB93590

Pentagon-Fused Hollow Fullerene in C-78 Family Retrieved by Chlorination

通讯作者地址: Xie, SY (通讯作者), Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Wuhan Univ, Dept Chem, Minist Educ, Key Lab Analyt Chem Biol & Med, Wuhan 430072, Peoples R ChinaC-78 is one of the most widely investigated higher fullerenes. Among its huge isomer family, only one non-IPR (IPR = isolated pentagon ring) cage, the C-2-symmetric C-#22010(78), was previously stabilized by endohedral derivatization. Here we report a new C-1-symmetric non-IPR hollow isomer, C-#23863(78), which was captured as (C78Cl8)-C-#23863 and then subjected to a regioselective substitution reaction with benzyl hydroperoxide to form C-#23863(78)(OOCH2C6H5)Cl-7. The structural connectivity of C-#23863(78), which contains a pair of fused pentagons, was confirmed by single-crystal X-ray diffraction analysis of the C-#23863(78)(OOCH2C6H5)Cl-7 molecule, which shares the same fullerene core with (C78Cl8)-C-#23863, support for the structure is provided by comparable IR measurements and computation. Theoretical studies suggest that the differences in C-Cl bond length, intermediate stability, and steric effects of the involved molecules account for the chemical regioselectivity of the substitution reaction.NNSF of China 20525103,20721001 ,20625516 973 Program 2007CB81530

Chlorofullerenes featuring triple sequentially fused pentagons

通讯作者地址: Tan,YZ(通讯作者),Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 电子邮件地址: [email protected], [email protected] triple sequentially fused pentagons (TSFP) motif is one of the basic subunits that could be used for constructing fullerenes, but it violates the isolated pentagon rule (IPR) and has not been found in carbon cages to date. The properties of TSFP-incorporating fullerenes are thus poorly explored both theoretically and experimentally. Reported herein are four chlorinated derivatives of three different fullerene cages, all with the TSFP motif. X-ray crystallographic analyses indicate that the molecular strain inherent to the pentagon adjacency of a TSFP is significantly relieved upon exohedral chlorination, leaving one of the four pentagon fusion sites unsaturated and rendering the present derivatives chiral. This unique reactivity, in stark contrast to that of previously reported non-IPR fullerenes containing double fused pentagons or triple directly fused pentagons, can be rationalized by density functional theory calculations, and are expected to stimulate further studies of these new members of the fullerene family, both theoretically and experimentally.NNSF of China 20525103,20531050,20721001,20423002 20673088 973 Program 2007CB81530

An Implementation of Turbo Code with SOVA Using TMS320 C54X

Turbo码是迄今为止性能最为优异的一种信道编码方式 ,是 IMT2 0 0 0信道编码的推荐标准 .本文采用 (7,5 )递归系统卷积码 ,最小距离伪随机交织 ,软输出维特比译码算法在 TMS32 0 C5 4X上实现了 Turbo码 ,并对所实现的 Turbo码在不同信道 ,不同信噪比情况下的的性能指标进行了模拟测试比较 .Turbo code has the best performance for channel coding which is developed recently. It becomes an recommending coding technique for the next-generation wireless communication protocol, such as W-CDMA and 3GPP for IMT-2000. We implement Turbo decoder with (7,5) RSC, pseudo__random interleaving and SOVA using TMS320C54X

2PRP_aU-2PSS并联机构运动学分析

面向抓取和分拣等场合，提出一种新型三移动一转动2PRPaU-2PSS并联机构，对其进行了运动学分析。应用方位特征集理论分析了机构约束特性、自由度和结构耦合度；根据杆长约束条件，建立机构位置分析非线性方程组，将位置正解问题转化为求一元方程，并应用改进灰狼优化算法求解该问题；推导出机构速度和加速度正逆解解析表达式；给出机构运动学分析数值算例，根据理论模型，运用Matlab软件绘制位移、速度和加速度曲线，同时应用Adams软件进行了仿真验证。结果显示，理论分析与数字仿真结果一致，表明给出的运动学分析模型和计算方法正确可靠

The Development Of Several Normal Gas Sensors

气体传感器日渐发展,其应用的范围越来越广,特别是在环境质量检测和工业生产过程安全检测、保障人民的生命安全等方面越加广泛。简要介绍了各种气体传感器的工作原理,并对常见几种有毒性气体(一氧化碳、二氧化碳、二氧化硫及氮化物)和可燃性气体(氢气、甲烷)的各种类型传感器的研究进展和工作机理以及敏感材料进行了介绍,同时对MEMS工艺制作气体传感器进行了展望。With the development of the gas sensor, more and more applications are implemented, especially in testing the environment quality and the industry’s safety production, even people’s life. The gas sensors’ working principles including the new development of several normal poisonous gases and flammable gases will be introduced. A novel production technics-MEMS which is applied to fabricate the gas sensor will also be mentioned

Hole Morphology and Keyhole Evolution during Single Pulse Laser Drilling on Polyether-Ether-Ketone (PEEK)

Polyether-ether-ketone (PEEK), with its superior mechanical, chemical, and thermal properties, as well as high biocompatibility, has been used in aerospace, electronics, and biomedical applications. In this paper, a large number of experiments of single-pulse laser drilling on PEEK were performed to analyze the hole morphology and keyhole evolution, which were characterized by an optical microscope, charge-coupled device (CCD), and high-speed camera. A novel method is proposed to observe and measure the dimension of the processed hole rapidly right after laser drilling for special polymer materials with wear-resistance and non-conductivity. Morphological characteristics of holes are presented to illustrate the effect of pulse width and peak power on hole depth, hole diameter, and aspect-ratio. The obtained maximum drilling depth was 7.06 mm, and the maximum aspect-ratio was 23. In situ observations of the dynamic process of laser drilling, including the keyhole evolution together with ejection and vaporization behavior, were also carried out. The keyhole evolution process can be divided into three stages: rapid increment stage (0-2 ms) at a rate of 2.1 m/s, slow increment stage (2-4 ms) at a rate of 0.3 m/s, and stable stage (>4 ms). Moreover, the variation of dimensionless laser power density with the increase in pulse width was calculated. The calculated maximum drilling depth based on energy balance was compared with the experimental depth. It is proven that the laser-PEEK interaction is mainly influenced by a photothermal effect. Ejection is the dominant material-removal mechanism and contributes to over 60% of the depth increment during the rapid increment stage, while vaporization is dominant and contributes to about 80% of the depth increment during the slow increment stage. The results reveal the material removal mechanism for single-pulse laser drilling on PEEK, which is helpful to understand the dynamic process of keyhole evolution. This not only provides a processing window for future laser drilling of PEEK but also gives a guide for the manufacturing of other polymers