铁路轨道几何状态评价方法比较

为了及时掌握列车反复荷载作用下的轨道几何形位状态，各国铁路管理部门都采用了现代轨检车和计算机处理技术来监测其变化情况，并制定了相应的评价标准．在此，通过对实测数据的分析，比较不同评价方法和标准的异同点，并对我国铁路轨道几何形位的养护和评价方法提出了参考性意见．     

Combined adjustment project of national astronomical geodetic networks and 2000'' national GPS control network

The combined adjustment project of the nationwide astronomical geodetic networks and 2000' national GPS control network involve 48519 terrestrial observational stations and 2666 GPS observational stations. In the terrestrial network, 25107 stations are height fixed and 23412 stations are in three dimensions. 440793 terrestrial observations and 183668 unknowns are involved in the adjustment. The three-dimensional observational models for the adjustment have been established. The crustal deformation influences and corrections are researched. Fast methods of solving partitioned adjustment for super large-scale geodetic network have been studied. The standard deviations of three-dimensional coordinates for all stations are evaluated. As a result of the combined adjustment, a unified national geodetic network with nearly 50000 stations is established, the high accurate three-dimensional geocentric coordinates are obtained. The standard deviation for geoid is averagely 0.2 m, for vertical deflection is about 1.5″, for the horizontal position is about 0.12 m, for the geodetic height is about 0.14 m, and for the three-dimensional position is averagely 0.3 m.     

Genetic analysis of segregation distortion of mating-type factors in Lentinula edodes

Analyses of the mating-type ratio of protoplast monokaryons to spores in 28 strains of Lentinula edodes were performed through statistical methods. The results showed that the segregation distortion phenomenon commonly exists in both types of Lentinula edodes, 17 out of the 28 samples did not display the expected 1∶1 ratio of protoplast monokaryons; and among them 8 fruiting strains distorted 1∶1∶1∶1 segregation of spores. The degree of distortion in all tested wild strains was significantly lower than that of cultured strains. In fruiting test of positive-negative parent, predominant spores were those with the mating type identical to dikaryotic parent, indicating that the predominance of nuclei mainly depends on the mating type of dikaryotic parent. Data from di-mon mating test verified that monokaryons with acceptor nuclear type are present exclusively in a large amount after dedikaryotization, suggesting that the specificities among B factors and some other unknown factors in cytoplasm are probably responsible for the phenomenon of skewed segregation.     

福建宁德畲族（聚居区）文化遗产保护与利用的调查报告

福建宁德畲族文化作为中华畲族文化的主源头之一，在团结与凝聚当地和国内外的畲族同胞。增进人们对畲族历史文化和现实了解方面发挥了不可替代的纽带作用，它与聚居区内景色秀丽的山水风光相映成趣，具有潜力巨大的旅游价值与产业价值。但近期以来，该地畲族传统文化也面临着逐渐失传的现实危机。抓紧实施抢救与发展畲族文化遗产系统工程的各项具体工作，对于继承畲族优秀传统文化，促进地方自然生态、文化生态与经济的和谐发展具有重要的意义。     

“变通权”与国家法制统一

历史和基本国情决定了我国解决民族问题只能走民族区域自治的道路，这是解决民族问题的中国模式。民族自治与区域自治相结合的民族区域自治法律制度赋予少数民族地方“变通补充权”，体现了国家充分重视和保障少数民族管理本民族内部事务的权利。它与实行各民族平等、团结、共同繁荣的原则和国家法制统一原则是一致的。     

柔嫩艾美尔球虫厦门株(Eimeria tenella)生物学研究

采用单卵囊分离方法从厦门地区饲养的鸡盲肠中获得艾美尔球虫,经显微观察、测量和感染实验,从寄生部位、卵囊形态、孢子化时间和潜伏期等指标测定,实验结果:采用琼脂板方法分离和挑选单卵囊方法进行感染效果理想,单卵囊感染小鸡成功率为60%.该球虫寄生在鸡盲肠部位,其余部位未发现,卵囊形态长卵圆形,长25.80(23.5～28.5),宽20.86(18.5～23.5),长/宽:1.23(1.21～1.27),27℃条件下孢子化时间为20 h.,潜伏期为146 h.与国内一些株进行比较存在差别,确定该艾美尔球虫为柔嫩艾美尔球虫(Eimeriatenella),并定名为柔嫩艾美尔球虫厦门株.     

万州区城镇弱势群体现状调查与分析

本文在深入调查研究的基础上，分析了在三峡工程建设和三峡移民搬迁的背景下，万州区弱势群体结构、形成原因、心态等方面所具有的特殊性，并针对其特殊性提出了建立移民社会保障体系等措施。     

钨酸均相催化法合成戊二醛

介绍用过氧化氢水溶液一步催化氧化环戊烯合成戊二醛的工艺路线 ,讨论了催化剂、助催化剂、溶剂等因素对戊二醛收率的影响 .在钨酸与三氧化二硼的质量比为 1 1 ,反应温度为 3 5℃ ,反应时间为 4h ,以叔丁醇为溶剂的优化工艺下 ,可得到最高戊二醛收率为 71 .2 % .     

水稻穗颈维管束性状的株内变异

水稻穗颈大小维管束数株内茎间差异明显，株内茎的次数分布呈正态分布，研究群体穗颈维管束时，可取中等株内中等茎为样本，株内各茎的穗颈大小维管束数之比和第2节间与穗颈大维管束数比值都表现亚种特性，中等茎具有代表性。     

罗非鱼全雄控制技术研究进展

罗非鱼的全雄单性控制对于罗非鱼的养殖有着十分重要的意义。罗非鱼的性别决定机制十分复杂，有XX/XY型和ZW／ZZ型两种性染色体型，并且易受环境和其他因素的影响。在对罗非鱼的全雄控制方面，有人工挑选、激素处理、种间杂交、遗传雄性罗非鱼技术(GMT技术)等几种可用的方法，但每种方法都有其优缺点。总的来看，遗传雄性罗非鱼技术具有较为广阔的应用前景，可能成为解决罗非鱼全雄控制的有效手段，并符合健康养殖的要求。