塔北与巴楚下丘里塔格群白云岩储层特征对比

针对塔北和巴楚地区下丘里塔格群白云岩储层特征的差异问题，通过岩芯描述、薄片鉴定、阴极发光、扫描电镜、物性分析以及压汞等资料从岩石学、储集空间、物性及孔隙结构几个方面进行研究。结果表明：塔北地区主要为晶粒白云岩和颗粒白云岩；储集空间以晶间孔、晶间溶孔、溶蚀孔洞和裂缝为主，储集空间类型组合多样；喉道主要为粗-细喉型，分选好，孔喉分布均匀，连通性较好，物性较好；此外该区构造破裂作用和岩溶作用发育，也改善了储层物性。巴楚地区以晶粒白云岩和泥微晶白云岩为主；溶蚀孔洞、裂缝的发育程度和规模不如塔北地区，储集空间类型组合较单一；喉道多为细-微喉型，分选差，孔喉分布极不均匀，连通性差，物性较差。塔北地区白云岩储层物性好于巴楚地区，造成该差异的原因主要是受到了沉积作用和成岩作用的共同影响。     

An anti-Bcl-2 antibody prevents 2-deoxy-D-ribose-induced apoptosis in the IPLB-LdFB insect cell line

Confocal microscopy reveals that the anti-Bcl-2 antibody (pAb) is able to diffuse across the plasma membrane of the fat body cell line IPLB-LdFB from the insect Lymantria dispar, demonstrating the presence of Bcl-2-like molecules in the cytoplasm. Immunoperoxidase procedure confirms the cellular localization. Furthermore, an immunoprecipitation corresponding to a molecular weight of 29 KDa is observed with western blot analysis using the anti-Bcl-2 pAb. Cytofluorimetric experiments show that anti-Bcl-2 pAb counteracts 2-deoxy-d-ribose-induced apoptosis and provokes morphological changes in the insect cell line, i.e. a reduction in cell size, the disappearance of the vacuola and changes in shape. At the same time, the antibody provokes mitochondrial membrane depolarization, and N-acetyl-l-cysteine is unable to reconstitute the physiological conditions. The present findings suggest that Bcl-2-like proteins play a main role in maintaining of the integrity of cellular components, e.g. mitochondria, rather than in controlling programmed cell death. Received 23 January 2001; received after revision 1 March 2001; accepted 1 March 2001     

魏晋南北朝社会文化与服饰风格

简述了魏晋南北朝时期的主要社会化及其对服饰产生的影响,说明服饰风格的形成与社会化的影响是密切相关的。     

建瓯“北苑贡茶”品牌茶产业的复兴——以生态经济学为视角

结合经济建设和生态环境之间的关系,分析"北苑贡茶"的兴衰过程及对其衰败原因;从生态经济学角度,提出以"北苑贡茶"为主打品牌的建瓯茶产业的复兴构想。     

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。     

陕北延长组天然裂缝特征的综合辨识

通过野外露头观察、储层岩芯的室内观测、油井压裂数据和生产动态数据的分析以及测井曲线的解释等四种方法对陕北地区延长组低渗透砂岩油藏储层中的天然裂缝发育特征进行了综合辨识,使用这四种方法对该区域裂缝进行全面识别更加简易可行。     

Zircon SIMS ages and chemical compositions from Northern Dabie Terrain: Its implication for pyroxenite genesis

We present the results of a detailed micro-scale investigation of zircons from pyroxenites, Daoshicong Northern Dabie using a combination of SIMS and ICPMS. The SIMS measurements gave ages of 134—159 Ma. Its average of (144.5± 6.2) Ma is interpreted as the best estimate of the pyroxenite intrusion. The crystallization of zircons continued for quite a long time and underwent slow cooling. The pyroxenites are products of post-collision magmatism. The REE pattern is HREE-enriched, and its HREE concentrations fall between the magmatic and metamorphic range of gneissic zircons from the Dabie area, which indicate the involvement of crust material in its mantle source.     

日本血吸虫天然抗病分子疫苗的结构与功能分析 Ⅰ.未成熟卵28kDa分子的快速分离纯化与鉴定

为了进一步研究日本血吸虫天然抗病分子(SIEA 28 kDa)的结构与功能,采用SDS-PAGE制备电泳和电洗脱法从日本血吸虫未成熟卵可溶性抗原(SIEA)中快速分离纯化了SIEA 28 kDa抗原分子,纯化后抗原分子经梯度凝胶电泳分离,重复测定其分子量。同时,采用Western blot和ELISA检测SIEA 28 kDa分子的免疫活性及其生化纯度。证实获得的提取物SIEA 28 kDa抗原分子的纯度高、活性好;用该抗原分子免疫家兔获得的单特异性抗血清可同时识别日本血吸虫未成熟虫卵、雌虫和雄虫的28 kDa抗原组分。说明该分子与日本血吸虫成虫(AWA)28 kDa组分具有部分交叉抗原性。     

汉魏晋南北朝文学的任侠主题

描述、歌颂游侠形象,开掘、赞美任侠精神,是汉魏晋南北朝文学的一个传统主题．这个传统文学主题的创立、扩展,既是当时社会现象的反映,又是与当时的时代思潮相关联,适应了寒士阶层的历史性斗争需要．