Stabilization Index System of Simple Landfill

As the MSW (municipal solid waste) of the counties or towns in the Three Gorges areas is simply piled up, the piling-up yard has occupied large amount of land and will pollute the earth and water environment. So it is very important to judge whether a MSW piling-up yard is stabilized for the lands' reuse and pollution prevention. The accuracy of judgment depends on the index system of stabilization. The index system is established and the correlation between lixivium COD, organic matter, age of piling-up etc., are also analyzed. The index system is confirmed and the evaluation standard is also established.     

贵州省林业学校树木园植物引种及组成研究

介绍了树木园的基本情况 :贵州省林业学校树木园占地面积约 14hm2 ,现有植物 110科 ,2 98属 ,695种 (包括变种、亚种、变型 ,下同 ) ,其中异地迁入 618种 ,大部分生长良好 ;在种类组成上 ,含 1～ 5个种有 75科 ,含 6种以上的有 35科 ,珍稀濒危植物 52种 ,国家级保护植物57种     

牛体外受精胚胎细胞核移植的实验研究

将采自肉联厂屠宰车间的牛卵巢中的卵母细胞置于ＴＣＭ－１９９＋１０％ＥＣＳ（０ｄ）＋ＦＳＨ（１万ＩＵ／Ｌ）＋ＬＨ（５ｍｇ／Ｌ）中培养成熟，用含０．３％透明质酸酶的消化液将卵母细胞周围的卵丘细胞去掉，并以７．５ｍｇ／Ｌ的ＣＢ液处理后，用微吸管吸去透明带内的第一极体及极体下面的部分卵母细胞质，然后将经体外受精并发育至８～１６细胞期胚胎的卵裂球注入去核卵母细胞的卵周隙中，再将移核胚置于电融合槽内进行融合（电场强度为１２００Ｖ／ｃｍ，持续时间为８０μｓ，１次脉冲刺激）。将融合的胚胎移入生长有单层贴壁颗粒细胞的发育培养液（ＴＣＭ－１９９＋１０％牛血清）中培养，观察移核胚的融合率及发育率，部分去核卵母细胞经染色后观察去核率。结果表明：（１）移核胚的融合率为８６．９％（５３／６１）；（２）发育至２～８细胞期的胚胎占培养的移核胚胎总数的２１．３％（１０／４７）；（３）卵母细胞的去核率为６８．２％（４５／６６）。     

Mitochondrial changes during storage of untreated or CIPC-treated potatoes

During storage of potato tubers (Solanum tuberosum L., var. Bintje), important changes appear which affect respiratory control, $\text{ADP}\text{O}$, intensity of O₂ consumption in the presence of different substrates, and NAD⁺ dependence, In mitochondria extracted under strictly similar conditions, from patato tubers stored at 4°C, the respiratory control (RC) maintains a value near 4 for 4 to 5 months. It then declines progressively to low values. At 20°C, a stable RC of 4 can be observed for several months, which then decreases at the end of dormancy. Then, the RC increases sharply; at this stage, $\text{ADP}\text{O}$ are abnormally low, and, some time later, NAD⁺ dependence disappears. Mitochondria treated with 250 μM chlorpropham show a 50% inhibition of the electron transfer with exogenous NADH as substrate. After tuber treatment with 1% chlorpropham, sprouting is inhibited for several months. The activities of mitochondria extracted from such tubers remain unaffected by the treatment. The use of this phenylcarbamate for potato tuber treatment permits obtaining functional mitochondria from tubers after a slightly longer period of storage.     

论先秦儒家的祭祀思想

先秦儒家在古代的祭祀文化的语境下产生,自觉或不自觉地以传承和规范祭祀文化为已任。他们从修德配天、神人分治的宗教信仰出发,特别注重祭礼作为治人之道的社会作用,尤其是祭祀的政治文化整合功能和普遍的道德教化功能。同时,他们认为祭祀也具有文化传承功能和社会交往、集体团聚的功能。他们将祭礼的核心规范为"敬",从而将祭祀的根本目的从传统的禳灾祛病、求福避祸转换为培养人们的诚信忠敬意识,并且主张用情智统一的态度去祭祀已故亲人,构筑了具有中国特点的传统祭祀文化。     

Carboxylesterases from Boophilus microplus hydrolyze trans-permethrin

An esterase which hydrolyzes the ester bond of trans-permethrin has been partially purified from homogenates of larvae of the cattle tick. The final (gel filtration) step showed two distinct peaks of p-nitrophenylbutyrate-hydrolyzing activity. The trans-permethrin-hydrolyzing activity of the lower-molecular-weight enzyme cochromatographed with the p-nitrophenylbutyrate-hydrolyzing activity of that enzyme. Little trans-permethrin hydrolysis was observed in the high-molecular-weight peak. The yield of the low-molecular-weight enzyme increased on extraction of the homogenates with Triton X-100. Inhibition studies using the low-molecular-weight enzyme and trans-permethrin as substrate indicated that hydrolysis was due largely to a carboxylesterase (EC 3.1.1.1).     

Community Stability Was Maintained by Divergent Mechanisms in Arid Desert Ecosystem

More attention has been paid to the effects of diversity and dominance on community temporal stability rather than spatial stability in the main biome globally. Moreover, the maintenance mechanisms underlying the stability patterns of plant communities dominated by different plants in the Gobi Desert remain unknown. This article addresses the maintenance mechanism of plant community stability dominated by different plants in the Gobi Desert northwest of China. Four communities dominated by Sympegma regelii, Reaumuria songarica, Nitraria sphaerocarpa, and Gymnocarpos przewalskii, respectively, were selected in the national nature reserve, and a total of 240 quadrats, 20 × 20 m each, were established in the four communities. The correlations among species richness, species evenness, species diversity, community stability, and the biomass of dominant species were analyzed by linear regression model and structural equation model. The dominant species determined positively and directly the stability of the N. sphaerocarpa community, while diversity acted negatively in the maintenance of G. przewalskii community stability. However, species richness contributed mainly and positively to the maintenance of stability in the S. regelii community. Direct and negative effect of species richness and positive function of diversity were found in the maintenance of stability in the R. songarica community. Taken together, community stability is maintained by the divergent mechanisms in arid environment, which depends on the dominant species and diversity. The study could provide reference for the management of communities in the arid desert regions.     

也谈中职图书馆对社会开放——以福建省侨兴轻工学校图书馆为例

随着高校图书馆对社会开放，作为中职图书馆，也不可能置身事外，以福建省侨兴轻工学校图书馆为例论述中职图书馆可利用资源、专业、设备、人文环境等方面的优势对社会开放，为经济建设服务。     

豫北山地传统民居院落平面类型初探

指出了豫北山地民居在历史长河不断演进,由于地区自然环境和人文环境的差异,其院落空间格局呈现出不同的形态。从院落的空间组合及组合方式等方面对整个豫北山地民居的院落空间平面形态进行了初步探讨。     

江苏省农业广播电视学校体系建设思考与实践

农广校体系是农民教育培训事业发展的主要依托力量。江苏省农广校体系建设通过一手抓农民中等学历教育,一手抓农民科技培训,拓展了办学职能;通过强化省级校功能,明确机构建设要求,建设机构队伍,健全了体系架构;通过完善设施,加强教学基地建设,提升师资水平,提高了服务能力。