Studies on Introduction of Haliotis fulgens and Interspecific Hybridization with Haliotis discus hannai

杂交育种是最为经典的育种方法之一，已经广泛应用于农作物以及畜牧业养殖的良种培育，并成为优良新品种培育的主要途径。不同基因型的亲本杂交，可以获得基因重新组合及类型丰富的杂交后代，从而拓宽了育种的遗传资源，培育优良新品种。绿鲍产于美洲太平洋亚热带沿岸，属于大型鲍，经济价值高，最适水温为18～24℃左右。本研究利用绿鲍和和皱纹盘鲍作为材料，开展了两者之间的种间杂交，研究影响绿鲍和皱纹盘鲍杂交受精率的主要因素，从形态学的水平分析杂交种的各性状之间的相关性以及对活体重的影响，并借助微卫星分子标记研究绿鲍和皱纹盘鲍亲本以及杂交子代的遗传多样性，同时还研究了杂交F1在不同的生长时期的杂种优势表现。主要结果如...Hybridization is one of the most classical breeding methods, which has been widely used in crops and livestock. Hybridization between different genotypes can show significant heterosis and produce new varieties. Hybridization between Haliotis fulgens and H. discus hannai was studied in this thesis. The present study is to deal with the feasibility and early development of hybridizaiton between the...学位：理学硕士院系专业：海洋与环境学院海洋学系_海洋生物学学号：2242009115114

Curves and surfaces modeling based on S-λ probability distributions

在自由型曲线曲面造型中，造型基函数的性质往往决定着最终的曲线和曲面的 性质，因而寻找和选取合适的造型基函数便成为计算机辅助几何设计研究的重要 内容，是国际前沿研究的课题。常见的造型基函数包括Bézier基函数、B样条基函 数、负Bernstein基函数（由Goldman提出）、Poisson基函数（由Goldman和Morin提 出）等。这些基函数都与离散概率分布密切相关，例如Bézier基函数取自二项分 布；B样条基函数与一个随机过程密切相关；负Bernstein基函数与负二项分布对 应；而Poisson基函数则对应Poisson分布。另一方面，这些离散概率分布在算子逼近 论中...Many methods used in Computer Aided Geometric Design (CAGD) are closely asso- ciated with probability distributions, particularly the discrete distributions. For example, the Bernstein basis functions used in Bézier curves are taken from the binomial distribution, the B-spline basis functions used in B-spline curves are connected with some stochastic process. The Poisson basis functions which ...学位：理学博士院系专业：数学科学学院信息与计算数学系_计算数学学号：1902009015360

1976 Vol. 24 Number 11

https://engagedscholarship.csuohio.edu/lawpublications_gavel1970s/1100/thumbnail.jp

Electrocatalytic Oxidation of Formic Acid on Pt-Se Hollow Nanosphere Modified Glassy Carbon Electrodes

Corresponding authors. Email: [email protected],[email protected]; Tel:+86-13879159319.[中文文摘]以无定形硒溶胶为模板制备了不同硒覆盖度(θSe)(θSe=0.49,0.39,0.06,0)的Pt-Se和Pt纳米空球(分别记为(Pt-Se)HN和PtHN),发展了利用亚硫酸盐彻底除去核壳纳米粒子上Se的方法.对获得的纳米空球进行了形貌和结构的表征,结果表明所制备的(Pt-Se)HN粒径均匀,分散性好,球壳呈多孔结构.以其作为电催化剂制备了(Pt-Se)HN修饰的玻碳(GC)电极((Pt-Se)HN/GC),利用常规电化学方法比较该电极与PtHN/GC和商用碳载铂(Pt/C)修饰GC(Pt/C/GC)电极对甲酸的催化氧化作用,发现对甲酸氧化的活性顺序为(Pt-Se)HN/GC>PtHN/GC>Pt/C/GC.三种电极催化甲酸氧化的机理有所不同:前者更倾向于通过弱吸附中间体直接氧化成CO2的单途径机理进行,后两者则通过强吸附和弱吸附中间体的双途径机理进行.在一定Se覆盖度条件下,(Pt-Se)HN/GC对甲酸的氧化有助催化作用.[英文文摘]Platinum-selenium and platinum hollow nanospheres(denoted as(Pt-Se)HN and PtHN,respectively) with different coverages of Se(θSe)(θSe=0.49,0.39,0.06,0) were prepared using amorphous Se colloids as a sacrificial template.Sulfite was used to completely remove Se from the core-shell nanoparticles.The morphology and structure of the nanoparticles were characterized using various methods,which revealed a hollow structure with a very uniform size distribution and a porous structure on the shell.Assembly of Pt-Se hollow nanospheres ((Pt-Se)HN) on a glassy carbon (GC) electrode produced a (Pt-Se)HN/GC electrode. The electrocatalytic activity of the electrode for the oxidation of formic acid was compared with the PtHN/GC and commercial Pt/C/GC electrodes by cyclic voltammetry and chronoamperometry. The activity followed the order:(Pt-Se)HN/GC > PtHN/GC >Pt/C/GC. The electrooxidation of formic acid on (Pt-Se)HN/C, PtHN/C, and Pt/C catalysts follows different mechanisms: the former tends to directly oxidize formic acid to CO2 via weakly adsorbed intermediates, and the latter two via both weakly and strongly adsorbed intermediates.(Pt-Se)HN with a suitable selenium content showed optimal electrocatalytic activity for the oxidation of formic acid.国家自然科学基金(20663002); 厦门大学固体表面物理化学国家重点实验室基金(200511)资助项

低龄DDH患儿初次开放复位术中股骨截骨必要性的前瞻性随机对照试验研究方案

回顾性研究发现,股骨截骨术并非低龄DDH患儿手术治疗所必须的,而应根据患儿具体情况合理选择;本研究通过多中心前瞻性研究进一步探讨对于18个月至3岁DDH患儿是否要行股骨截骨术。FSODDH项目为一项多中心前瞻性随机对照临床试验研究。研究设计拟招募200名单侧低龄DDH患儿,随机分成股骨截骨组(n=100)和股骨不截骨组(n=100)。股骨截骨组患儿全部采取髋关节开放复位术、骨盆截骨术及股骨截骨术治疗;股骨不截骨组患儿全部采取髋关节开放复位术及骨盆截骨术治疗;术后定期随访至少2年。收集术前、术后1周、术后1个月、术后3个月、术后6个月、术后1年及术后2年的髋关节正位X线影像资料,比较两组患儿的髋臼指数、股骨头坏死率、再脱位率、术中出血量、手术时间和住院天数等临床指标。这一多中心前瞻性研究将能为低龄DDH患儿是否需行股骨截骨术提供循证医学证据

In-situ SERS of formic acid electro-catalytic oxidation on Au-core@Pt-shell/Pt electrode

Au-core@Pt-shell nanoparticles were synthesized by chemical reduction method. The samples were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). In-situ surfac-enhanced Raman scattering (in-situ SERS) spectroscopy combined with cyclic voltammetry was utilized to investigate the electro-oxidation behavior of formic acid adsorbed on Au-core@Pt-shell nanoparticles coated on platinum electrode, and SERS spectra with high quality were acquired. Results showed that the intermediates COad and HCOOad, the dissociated products of HCOOH, were produced at open circuit potential. As the potential moved to positive, the first oxidation wave for CO, was observed at +0.10 V. The study demonstrated that the electrode prepared by Au-core@Pt-shell nanoparticles coated on platinum substrate exhibited good electro-catalytic properties and SERS activity for the oxidation of HCOOH, and the electro-oxidation proceeds of formic acid via "dual path" mechanism

Applicability study on estimation methods of reference crop evapotranspiration in Turpan Basin

参考作物蒸散量（Reference Crop Evapotranspiration，简称 ET0）是估算实际蒸散量的重要参数，也是计算作物需水量的关键因子。 目前常用的 ET0 估算方法有很多种，各方法所需要的参数不同，估算精度存在一定程度的差异。 本文分析了吐鲁番盆地各气象因子的变化特征， 利用温度法和辐射法计算了吐鲁番盆地的参考作物蒸散量， 分析了影响 ET0 变化的敏感因子； 以 FAO-56 PM 公式为标准，分别从年、 月尺度上来评价并修正各方法在吐鲁番盆地的适用性， 分析了各方法产生偏差的原因； 建立了 FAO-56 PM 公式计算结果和蒸发皿观测的水面蒸发量之间的关系。 主要结论如下：（1） 2000—2017 年吐鲁番盆地年平均气温以 0.53 ℃/10a 的速率呈显著上升趋势；年日照时数下降趋势不显著，气候倾向率为 71.90 h/10a；年平均相对湿度以 2.81 %/10a 的速率呈显著下降趋势；年平均风速以 0.22 m/s/10a 的速率呈显著上升趋势。 受气温上升、 日照时数减少、 平均相对湿度减小和风速增大的影响，2000—2017 年吐鲁番盆地 ET0 呈显著增加趋势。（2） 吐鲁番盆地影响标准 ET0 的首要气象因子是太阳辐射，其次是饱和水汽压和净辐射。（3） 影响辐射法计算结果偏差的主要因子是风速和净辐射；影响温度法计算结果偏差的主要因子差异较大， H-S 和 I-A 方法计算结果偏差的主要因子是饱和水汽压差， Traj 和 Bert 方法计算结果偏差的主要影响因子分别是风速和温差。（4） 修正后，各 ET0 方法误差明显减小且普遍无显著差异，修正后的 Bert、M-H、 P-T、 D-K 和 I-A 方法可作为吐鲁番盆地 ET0 简化估算方法。（5） 利用蒸发皿系数得到的蒸发皿估算的参考作物蒸散量与 FAO-56 PM 公式计算结果较为一致，在吐鲁番盆地可以采用水面蒸发量估算参考作物蒸散量

The Making and Abuse of Noble Commandery in Medieval China:A Case Study of Wang Clan's Genealogy in Taiyuan

范兆飞，山西大学历史文化学院副教授，历史学博士。【中文摘要】郡望建构和谱系塑造是中古士族门第成立的重要条件。郡望和士族互为唇齿，相辅相成。中古太原王氏的郡望和谱系的构成具有典型性特征。六朝时期士族郡望和谱系的边界极为森严，隋唐帝国统一，在国家主义复苏和政府权威重建的历史背景下，太原王氏的郡望呈现从高贵化走向世俗化的趋势：诸色人等均可将先世攀附至毫无血统关系的同姓名流，也可随意伪冒著名郡望。中古时期真伪相参的谱系塑造，见证中古门第郡望从界限森严到普遍滥用的演变过程， 也是国家与社会力量角逐消长的鲜活反映。 【Abstract】The establishment of noble commandery and genealogy constituted an important aspect of aristocratic families in medieval China. The noble commandery and aristocratic families were indispensable. Wang clan's noble commandery and genealogy in Taiyuan were typical in medieval China. The composition of aristocratic families in the Six Dynasties Period was relatively pure. However it became common and confused in the Sui and the Tang Dynasties, under which China was reunited and the government resumed authority. All sorts of people might claim a distinguished ancestry and take up the noble commandery of the same family name. The fabrications of genealogy witnessed the making and collapse of noble commandery, which reflected the relative strength between the government and society in medieval China.国家社科基金后期资助项目“汉唐之际太原士族群体研究”（12FZS014); 教育部人文社科青年项目 “魏晋北朝并冀二州士族群体比较研究”（10YJC0024); 2013年度山西省高等学校优秀青年学术带头人支持计划 (2013052005

Application and Evolution of the Theories of Regional Groups in Medieval China:With a focus on Guanlong Ruling Group

范兆飞，上海师范大学人文与传播学院历史系教授，历史学博士。【中文摘要】陈寅恪在20世纪三四十年代提出的关陇集团理论是中古史地域集团学说的滥觞。关陇集团理论之后，形形色色的地域集团遍布中古政治史研究的主要版图。地域集团学说是中古史学人研究政治史的重要利器，也是近现代学人极为重要的学术遗产。学人总结的中古地域集团，大致可分为州郡型集团和山川流域型集团。山川流域型集团似可作为中古政治史继续研究的重要选择。地域集团学说的合理使用及升级换代，必须以深刻理解关陇集团的内涵和外延、掌握 其要素和使用方法为前提，剖析集团中的人物关系、角色认同和身份变化，辨析史料异同及影响因素，无疑是中古新政治史重建和再出发的起点。 【Abstract】The theory of Guanlong ruling group put forward by Chen Yinque during the 1930s/40s was the origin of all subsequent theories of regional groups. Scholars developed various regional theories about the political history of medieval Chinese，providing an important tool for the study of political history and constituting a significant item of academic heritage. We can divide them into two kinds by the standards ： prefectures (州）& commanderies (郡），and mountains & lakes. The theories of regional groups about mountains & lakes offer an important way to study political history in medieval China. Applying the theories of regional groups soundly，including gaining a sharpened understanding of the theory of Guanlong ruling group，and examining the relations between political figures in the factions and the subtle changes of identities， will promote the reconstruction of the political history of medieval China