牛蒡根的发育解剖学研究

对牛蒡根进行了发育解剖学研究。结果表明,牛蒡根初生结构中,内皮层细胞具木质加厚,在对应初生木质部脊的部位具有通道细胞。维管形成层活动,产生含大量薄壁组织化的次生维管组织;位于次生韧皮部中的额外形成层活动,产生部分维管组织;木栓形成层活动,形成大量的、形态不规则的栓内层,三者共同作用形成牛蒡的肉质直根。     

Rho激酶抑制剂Y-27632对小鼠早期胚胎发育的影响

[目的]研究Rho激酶特异抑制剂Y-27632对小鼠早期胚胎发育的影响。[方法]取小鼠早期胚胎2细-胞,经体外培养1~2 d后,进行细胞计数、受体移植,观测Rho激酶抑制剂Y-27632对细胞数目和胚胎着床效率的影响。[结果]早期胚胎经Y-27632处理后,胚胎发育延迟,囊胚出腔脱带时间推后,试验组胚胎桑椹胚、囊胚发育率同对照组差异不显著（P〉0.05）,与同期胚胎相比细胞数目增加,差异显著（P〈0.05）,着床效率相当。[结论]Rho激酶特异抑制剂Y-27632对小鼠早期胚胎细胞数目增加和延迟着床具有重要作用。     

低碳城市发展水平的测度及其对策研究——以长株潭为例

以评估城市＂低碳＂发展水平为研究目标,以长株潭三个一体化城市的社会经济、资源环境、科学技术和交通建筑为研究对象,并与全国平均低碳发展水平作对比,运用改进的层次分析法和主成分分析法构造了低碳发展水平的评价模型,并给定了评价区间标准,对长株潭3市及全国的平均水平进行了实证研究,提出了长株潭3市发展低碳经济的对策。     

不同生态区烤烟叶片发育超微结构的对比研究

利用超微技术对云南和河南烤烟叶片的细胞超微结构进行了比较研究。结果表明:在烟叶发育过程中,两地烟叶的超微结构变化规律基本一致,主要差异表现在淀粉粒与嗜锇颗粒上:在叶片发育早期,云南烟叶细胞中叶绿体及淀粉粒明显少于河南烟叶;在叶片发育中期,云南烟叶淀粉粒较多,嗜锇颗粒较少;在叶片发育后期,河南烟叶叶绿体降解迅速,嗜锇颗粒较多。     

“六位一体”高效生态农业产业发展模式与实施途径研究

"六位一体"生态农业产业发展模式是在生态农业产业发展模式基础上,针对我国生态农业产业中存在的问题,把"龙头企业-基地-加工-沼气发酵-物流-销售市场"六者紧密、有机结合而构建而成,形成典型高效生态良性循环的农业生态经济系统。该模式指出必须把实现高效生态农业产业化,恰当地采取最有效的生态农业产业模式作为我国农业发展的研究方向。本研究构建了该模式的基本框架,并根据该模式的特征,同时结合典型案例,提出了该模式的适宜范围、实施方案和有效实施途径。     

关于骆驼抗逆性的思考

从探险家发现南极鱼到科学家在南极鱼体内找到抗冷冻蛋白,联想到如何挖掘骆驼所具有的抗逆性。围绕骆驼特有的耐热、耐渴、耐寒、耐饿、耐粗饲料等生物学特性,对驼产业的开发与利用提出了新的思路。     

Association of racing performance with specific abnormal radiographic findings in Thoroughbred yearlings sold in Texas

The objective of this prospective study was to determine the association between presence of abnormal radiographic findings attributed to orthopedic disorders of development (ARF) with subsequent performance among yearlings in Texas. The study population was 348 yearlings offered for sale at the Texas Summer Yearling Sale during 2002 and 2003 for which presale radiographs of limbs were available for review. Radiographs of yearlings were reviewed and presence of ARF were recorded. Additionally, the following data were recorded for each horse: identifiers [name of dam, name of sire, hip number, and name (when available)], year of sale, state of birth, and sales price. Subsequent performance data were obtained for each horse at the conclusion of their 2^nd and 3^rd years of life. Results indicated that no ARF was significantly associated with performance outcomes. Lesions of the proximal dorsal aspect of the sagittal ridge of the 3^rd metacarpus/metatarsus resulted in significantly lower sales prices than either horses without this ARF or horses without any ARF. In conclusion, multiple radiographic abnormalities of Thoroughbred yearlings were not associated with reduced performance during the first 2 years of the racing careers of horses studied. Presence of some abnormalities, however, may be associated with reduced sales price.     

生防细菌防治土传病害的研究进展

介绍了土传病害危害程度及生防细菌的种类、作用机制、防治土传病害的研究概况,提出了目前利用生防细菌防治土传病害存在的问题及应用前景。     

福建省森林生态环境保护与发展对策

分析了福建省森林生态环境建设现状、问题 ,提出福建省森林生态环境保护与发展的指导思想、遵循原则、总体布局以及保障措施 ,供有关部门决策参考。     

石膏纤维板生产技术

本文从产品性能,应用范围及生产特点等方面将石膏纤维板与传统的湿法纤维板、纸面石膏板进行了对比,并简要介绍了石膏纤维板的生产技术与市场前景。