魏晋南北朝泰山祭祀考

魏晋南北朝是中国历史上政权更迭最频繁的时期,这样的政治文化背景下,正祀中的泰山祭祀产生了新的变化。从泰山所在地来看,除曹魏、北齐之外,泰山常规祭祀难以维系。而非常规的皇帝亲临祭祀、遣使致祭、祈祷雨晴等临时祭祀,不绝如缕。从非泰山所在地来看,随政权所在地而多处并存,或随首都转移而连动,成为这一时期泰山祭祀的突出特点,且制度建设相对较为完备。这一时期的不同政权几乎都努力争取并保持泰山的祭祀权力,以表明自己的正统性与合法性。这样,无疑为国家走向统一提供了一个共同的价值取向。     

魏晋及南朝碑额书法研究

碑额是一品碑刻的题额部分。由于东汉中期以来碑刻开始盛行,因此产生了大量书刻精美的碑额,其中以汉魏隋唐时段碑额最具文献与艺术研究价值。选择魏晋及南朝时期的碑额书法为研究对象,集中考察该长时段相关地域中碑额的存世状况、时代特点、书刻风格等问题,并就部分有笔法争议的碑额作品进行简要的考辨,以填补目前书法史关于碑额类型研究中魏晋南朝时段的空白。     

《西厢记诸宫调》为金人所作新考

很多学者认为《西厢记诸宫调》产生年代是金代,也有部分学者认为是南宋。通过对张炳森《关于<董西厢>的创作年代》的商榷,从宗教思想、民情风俗、名物制度、民族称谓、孕育流传地域与土壤基础等方面研究,《西厢记诸宫调》产生于金代。     

华南地区汉族人群MDR1基因单核苷酸多态性研究

 多药耐药基因1（MDR1）单核苷酸多态性（SNP）与疾病的易感性、药物治疗效果以及患者的生存复发等预后密切相关。采用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）和聚合酶链反应-单链构象多态性（PCR-SSCP）方法,对华南地区无亲缘关系的汉族人群MDR1基因编码区及部分启动子区进行SNP筛查,并比较不同人种间等位基因频率的差异。结果共检测出5个多态位点：T-2410C、T-129C、C1236T、G2677T/A和C3435T,其等位基因频率-2410C为4.65%,-129C为3.11%,1236T为63.31%,2677T为44.66%,2677A为14.47%,3435T为41.18%。除T-2410C位点因报道的太少无法比较外,其余位点等位基因频率在东亚、高加索以及非洲人群中的分布存在显著差异。该研究为进一步研究华南地区汉族人群MDR1基因SNP与药物效果、药物毒副作用以及疾病易感性之间的相关性提供依据。     

A dicephalic yellow anaconda snake,Eunectes notaeus (Serpentes: Boidae), from Southern Pantanal,Brazil

We describe a case of dicephalism in a yellow anaconda snake, Eunectes notaeus, from southern Pantanal, Brazil. The specimen exhibits two heads and two long necks, which are united on the anterior third of the body. Two hearts, three lungs, two livers, and two stomachs are also present. The left heart is larger and more cranial than the right heart although they are in the normal position. Radiographs revealed approximately 64 vertebrae in the right neck, 57 in the left neck, eight in the fusion zone, 202 in the trunk, and 52 in the tail. According to the classification adopted in the present study the specimen herein described is a proarchodichotomous specimen. This is the first record of dicephalism in Eunectes. Further, this snake represents the 28th documented case of dicephalism within the family Boidae and the 1088th case in snakes.     

钨、锡液态分离成矿作用的新证据

花岗质岩浆体系中，钨、锡的流－熔分配和熔－熔分配实验结果为花岗质岩浆液态分离成矿作用提供了新证据，在实验范围内，钨、锡的流－熔分配系数和都很小，其最大值然而，钨、锡的熔－熔分配系数都大于１，其最大值分析估算表明，花岗质岩浆期后热液成矿作用难以形成大、中型钨锡矿床，而液态分离作用是形成钨锡矿床的主要途径。     

人乙肝病毒DNA在感染树鼩肝细胞内状态的研究

为探讨人乙肝病毒ＤＮＡ在树Ｑｕ肝细胞内存在状态，对经血清学证明已被感染的树Ｑｕ肝组织进行转移印迹杂交分析。结果，在实验感染早期的树Ｑｕ肝细胞检出ＨＢＶ ＤＮＡ复制的中间体；在实验中晚期的动物肝细胞发现整合型的ＨＢＶ ＤＮＡ。表明树Ｑｕ肝对ＨＨＢＶ敏感，可成为乙肝和肝细胞癌发病机理研究及治疗乙肝药物筛选的较好的实验动物模型。     

对抛射体偏离发射面的探讨

在地面附近的抛射体偏离发射面的情况是与发射仰角α和发射声、的纬度λ有关系。     

今存南唐史著论略

南唐史研究薄弱的重要原因是史料匮乏。传世南唐史著《四库全书》全部在收,为今日南唐史研究不可或缺的依据。比较其著述时间早、资料丰富、史料价值高者。首推陆游《南唐书》。     

Molecular cloning and characterization of a cotton phosphoenolpyruvate carboxylase gene

Phosphoenolpyruvate carboxylase (PEPC) plays diverse physiological functions during plant development. In this study, a new phosphoenolpyruvate carboxylase gene GhPEPC2 is isolated from cotton (Gossypium hirsutum cv. zhongmian 35) by RACE-PCR. The cloned cDNA of GhPEPC2 is 3,364 bp in length, and has an open reading frame of 2,913 bp, encoding for 971 putative amino acids with a calculated molecular mass of 110.6 kD and pI of 5.56. The deduced amino acid sequence of GhPEPC2 shares high similarity with other reported plant PEPCs. Southern blot analysis indicates that the cotton PEPC exists as a small gene family and the GhPEPC2 might have two copies in the cotton genome. The semi-quantitative RT-PCR reveals that GhPEPC2 constitutively expresses in all the tissues of cotton and accumulated highly in roots, flowers and embryos but relatively low in stems and fibers. In addition, the recombinant GhPEPC2 has been purified by expressing it in E. coli and the catalytic properties of it were also investigated. The results showed that GhPEPC2 is a typical C₃ PEPC with a higher K_m (83.6 μM) and lower V_max (8.0 μmol min^-1 mg^-1) compared with the C₃ PEPCs previously reported.