北林园林学院园林花卉领域发展概况及思考

从教学和科研两方面介绍了北京林业大学园林学院园林草本植物领域61年来的发展历程。建校60年以来,随着国家和行业发展,学科不断发展壮大,园林花卉领域在教学和科研两方面都得到了长足的发展。教学方面已开设出多门系列课程,大量优秀教材和专著问世,在人才培养中发挥了重要作用。科研工作从教学导向发展到以国家和社会需求为导向、研究人员由花卉教研室教师发展到整个园林植物与观赏园艺学科教师,承担了大量国家级、省部级以及横向科研课题,培育了一批新优品种,获得一批国家级和省部级科技奖项和发明专利,发表了大量研究论文,对行业和社会进步做出了重要贡献。文章最后对未来发展提出了建议。     

浅析花境在城市道路绿化设计中运用一以福州为例

本文分析花境在道路绿化运用中碰到的一些问题,针对这些问题如何设计好这种类型进行一些初步的探讨。     

生物降解聚氨酯切花泥的研制

用魔芋部分代替聚醚多元醇,及甲苯-2,4-二异氰酸酯为主要原料合成了具有较高吸水性、保水性和可生物降解型聚氨酯泡沫。考察了异氰酸指数,硅油用量、反应温度对合成的影响。结果表明最佳的制备条件为魔芋精粉、PPG-3000、甘油为混合聚醚、异氰酸指数1.134;硅油3%、油浴40~50℃、搅拌8h。合成的聚氨酯泡沫有较高吸水性、保水性和生物降解性能,适合用做生物降解切花泥。     

米团花色素提取前后的主要成分变化分析

研究乙醇提取色素后花中主要成分的变化,为残渣的综合利用提供参考。结果表明,米团花中还原糖、蛋白质、粗纤维和灰分含量分别为11.35%、14.32%、25.47%和5.79%。提取色素(60%的乙醇)后,还原糖几乎全部被浸出,灰分含量显著下降,其中以钾、钙、磷下降最为明显;蛋白质和粗纤维因不溶于乙醇溶液而得到富集,含量显著升高,重金属含量符合国家饲料卫生标准,说明色素提取后的残渣可作为优质饲料。     

土壤异位改良工程在中国大型景观场地开发中的应用——以第十届中国花博会为案例

从土壤工程入手,针对土壤质量制约中国生态景观质量提升且土壤工程系统研究报道较少的现状,以第十届花博会现场实施的土壤异位改良工程为例,分析其设计愿景和现状矛盾,总结出表土收集和再利用、土壤改良配方设计、土壤生产基地建设和运营、地形再建和改良种植土回填四大关键步骤和技术要领;并通过土壤质量主控指标全过程监控,确保58万m3种植土成品的生产质量,为花博会的顺利召开和高品质景观营建提供了技术保障。分析了土壤异位改良工程符合我国的发展需求,阐述其兴起的时机已成熟,并提出将其作为专项实施工程,依托其快速成景的特点,建立适宜我国不同场地应用的技术体系,以及建立长期定位监测研究4条建议,以期为土壤异位改良工程在我国大型景观开发场地中的应用提供借鉴,丰富我国的土壤工程学技术。     

Comparative studies on hierarchical flower like Cu2XSnS4[X= Zn,Ni, Mn & Co] quaternary semiconductor for electrocatalytic and photocatalytic applications

CXTS [X = Zn, Co, Mn &Ni] has gained increasing interest owing to its application in photovoltaic devices, photocatalysis and electrocatalysis due to its favorable electrical and optical properties. In this work, CXTS has been prepared by hydro-thermal technique and explored as an electrocatalyst and photocatalyst for hydrogen evolution reaction and dye-degradation. From the XRD analysis, we observe that the prepared compound shows tetragonal structure. SEM images reveal that CXTS exhibits flower like architecture. The optical bandgap has been determined to be 1.53, 1.44, 1.42 and 1.37eV for CZTS, CCTS, CMTS and CNTS respectively. For, electrocatalytic activity, it is found that CNTS is preferred for hydrogen evolution with lower Tafel slope value of 76mV/dec and higher current density among the other materials in CXTS. As a photocatalyst CZTS resulted in better degradation of MB dye for about 60% under visible light. The effect of the position of energy bands, surface activity in hydrogen evolution reaction and the impact of recombination of charge carriers on the photocatalytic degradation has been discussed.     

烟草胞质雄性不育性与花蕾组织内源激素的平衡关系

对烟草雄性不育系和相应的保持系花蕾内源激素含量比值进行了分析。结果表明:从小花蕾、中花蕾至大花蕾,不育系各发育时期花蕾的IAA/ABA、GA3/ABA、ZT/ABA值均高于相应的保持系,且不育系花蕾中的IAA/ABA、GA3/ABA、ZT/ABA比值变化起伏较大,而各保持系花蕾中的IAA/ABA、GA3/ABA、ZT/ABA比值变化则比较平稳,说明不育系花蕾中几种内源激素的平衡关系出现了异常,这可能与雄性不育有关。     

The Young Experimentalists

Experimental architecture in Italy began to take a new form in the 1990s when young architects, who were embracing new digital technologies, also began to go abroad to study and practise in greater numbers. Anna Baldini outlines a fecund strand in Italian architecture which, while no longer wholly new or youthful, retains its vitality. She highlights, in particular, the contributions of: Avatar Architettura, Gianluca Brini, Elastico spa+3, Exposure Architects, Giuliano Fausti, Luisa Fontana, Giorgio Goffi, ian+, Iotti+Pavarani Architetti, Fabrizio Leoni, ma0/emmeazero, Antonella Mari, Metrogramma, Open Building Research (OBR), RoccAtelier, studio.eu and Vulcanica Achitettura. Copyright © 2007 John Wiley & Sons, Ltd.     

Linear programming applied to the flower sector: a Gladiolus bulb production case study

Mathematical modeling structure was developed to support representative Brazilian bulb growing and trading company's decision making process, during the Gladiolus production planning activity. The pertinent LP model was focused on client's bulb requests to be attended and showed interesting results (e.g., profit maximization and suggestions for optimal combinations of types of bulblet and spacing to be planted).     

试析元代瓷器的独特审美意蕴

元代青花与釉里红瓷器以其独特的造型、装饰手法及高超的烧制技术,给我们呈现了多元化的、兼收并蓄的、综合融通的审美意蕴,使中国瓷器装饰艺术的发展进入了一个崭新时代。