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武漢市科學工作者抗議美政府無理扣留我國科學家錢學森趙忠堯
科学通报 , 1950,
Abstract: 武汉市科学工作者联合致電聯合國和美國政府,抗議美國政府無理扣留我科学家钱学森、趙忠堯,要求美國政府立即予以释放,並保證以後不能再有此種類似行為發生。簽名者有中國科學工作者協會武汉市分会、中華全国第一次自然科學工作者代表大會籌備委員會武漢區分會、武漢区物理學會、生物學会、化学会、數學會、水利學會、農业科学會、机械工程學會、醫學會、土木工程學會、電机學會、礦冶學會、
菊花插枝的冷處理  [PDF]
夏鎮澳,王洪春
科学通报 , 1951,
Abstract: 我們在学习米邱林和李森科的理論與實踐中,注意到冷藏處理對植物生長具有特殊的重要性,於是我們便計劃利用植物的各部分來做冷藏處理的試驗。這里報告的是以菊花做冷藏處理插枝試驗的(?)步结果。這工作在1950年夏季開始,以本院栽培的数种小花單瓣的九月菊為材料,因為九月菊的枝條多而易於插活。
菊花插枝的冷處理
夏鎮澳
科学通报 , 1951,
Abstract: 我們在学习米邱林和李森科的理論與實踐中,注意到冷藏處理對植物生長具有特殊的重要性,於是我們便計劃利用植物的各部分來做冷藏處理的試驗。 這里報告的是以菊花做冷藏處理插枝試驗的(?)步结果。這工作在1950年夏季開始,以本院栽培的数种小花單瓣的九月菊為材料,因為九月菊的枝條多而易於插活。每一次處理100枝,每枝約
Scientific Foundations for an IUCN Red List of Ecosystems  [PDF]
David A. Keith, Jon Paul Rodríguez, Kathryn M. Rodríguez-Clark, Emily Nicholson, Kaisu Aapala, Alfonso Alonso, Marianne Asmussen, Steven Bachman, Alberto Basset, Edmund G. Barrow, John S. Benson, Melanie J. Bishop, Ronald Bonifacio, Thomas M. Brooks, Mark A. Burgman, Patrick Comer, Francisco A. Comín, Franz Essl, Don Faber-Langendoen, Peter G. Fairweather, Robert J. Holdaway, Michael Jennings, Richard T. Kingsford, Rebecca E. Lester, Ralph Mac Nally, Michael A. McCarthy, Justin Moat, María A. Oliveira-Miranda, Phil Pisanu, Brigitte Poulin, Tracey J. Regan, Uwe Riecken, Mark D. Spalding, Sergio Zambrano-Martínez
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0062111
Abstract: An understanding of risks to biodiversity is needed for planning action to slow current rates of decline and secure ecosystem services for future human use. Although the IUCN Red List criteria provide an effective assessment protocol for species, a standard global assessment of risks to higher levels of biodiversity is currently limited. In 2008, IUCN initiated development of risk assessment criteria to support a global Red List of ecosystems. We present a new conceptual model for ecosystem risk assessment founded on a synthesis of relevant ecological theories. To support the model, we review key elements of ecosystem definition and introduce the concept of ecosystem collapse, an analogue of species extinction. The model identifies four distributional and functional symptoms of ecosystem risk as a basis for assessment criteria: A) rates of decline in ecosystem distribution; B) restricted distributions with continuing declines or threats; C) rates of environmental (abiotic) degradation; and D) rates of disruption to biotic processes. A fifth criterion, E) quantitative estimates of the risk of ecosystem collapse, enables integrated assessment of multiple processes and provides a conceptual anchor for the other criteria. We present the theoretical rationale for the construction and interpretation of each criterion. The assessment protocol and threat categories mirror those of the IUCN Red List of species. A trial of the protocol on terrestrial, subterranean, freshwater and marine ecosystems from around the world shows that its concepts are workable and its outcomes are robust, that required data are available, and that results are consistent with assessments carried out by local experts and authorities. The new protocol provides a consistent, practical and theoretically grounded framework for establishing a systematic Red List of the world’s ecosystems. This will complement the Red List of species and strengthen global capacity to report on and monitor the status of biodiversity
IUCN黑颈鹤保护行动计划  [PDF]
李凤山
动物学研究 , 2014, DOI: 10.11813/j.issn.2095-8137.2014.s1.0003
Abstract: 该文为世界自然保护联盟(IUCN)黑颈鹤(Grusnigricollis)保护行动计划的内容,总结了全球黑颈鹤的分布地点和状况(种群、繁殖地和越冬地)、生态学、数量与趋势(目前全球黑颈鹤总数量约为10000~10200只);分析了黑颈鹤面临的主要威胁;概括了近年来主要保护与研究进展。根据过去几十年研究与保护实践,建议不降低黑颈鹤的保护等级。针对以黑颈鹤为代表的重要旗舰物种的研究与保护,提出了率先保护行动计划。
《海森伯传》译者引言  [PDF]
戈革
物理 , 2004,
Abstract: ?《海森伯传》译者引言
焉耆垦区“克瑞森”葡萄诊断施肥综合法标准的制定  [PDF]
姜继元,李铭,郭邵杰,陈奇凌,郑强卿
北方园艺 , 2013,
Abstract: 以焉耆垦区干旱戈壁地5a生“克瑞森”葡萄为试验材料,对焉耆垦区高产园和低产园的叶片进行了诊断施肥综合法(DRIS)的叶片营养元素分析。确定了DRIS诊断的重要参数N/P、?N×K?、P/K;制定了干旱戈壁地“克瑞森”葡萄DRIS指数诊断法的计算公式;利用DRIS图解法绘制了“克瑞森”葡萄叶片营养的诊断图〖JP4〗。结果表明“克瑞森”葡萄叶片中N、P、K营养元素的浓度关系最佳值范围为?N/P=5.4611±0.9629;K×N=243.256±36.1078;P/K=0.3133±0.06。?
The Conformity of Iran`s Protected Areas with IUCN Categorization System  [PDF]
M. Cheraghi,N. Khorasani,M. Karami,M. Shariat
Journal of Biological Sciences , 2008,
Abstract: The main object of this research is to define the real status of the 4 category (the protected areas) in Iran compared with IUCN categorized system. So, the protected area of Maracan with an extension of 103983 hectares situated in the northwest of the country was selected as a case study. The methodology is as soon as the ecological and socio-economical resources which led to the supplement of the resources base map (scale:1.50000) were identified the mapping and zoning processes founded on an analytical system resulted in the grasp of the environmental unit. At the final stage, the zoning model was ascertained. This study intends to find out whether the protected of Maracan matches with one of 4, 5 and 6 categories of IUCN or not. Its consequences indicated that the protected, the recovery, the buffer, the intensive and other zones in Maracan have allocated 52, 8.27, 11.35, 1 and 27% of the plane region to themselves coming one after the other. At the end, the research is suggestive of the 4 category management to protected area of Maracan and the Environmental Conservation Organization of Iran must conform all of protected areas to IUCN categorized system with mentioned methodology.
斯蒂芬森父子  [PDF]
李著璟
工程力学 , 1992,
Abstract: 乔治和罗伯特·斯蒂芬森父子(Ge-orge&RobertStephenson)是近代科技史上的重要人物。他们的功业影响着现在每个人的生活。
《醉翁谈录》新解  [PDF]
孟昭连
- , 2016,
Abstract: 传统研究认为,《醉翁谈录》是一本记载古代说话艺术的专著,书中描写了宋元民间说话艺人的高超伎艺,记录了不少当时说话人的“底本”。通过对“话本”“舌耕”“说书”等概念的原始含义及其流变与书中记载的小说语体的考察分析,否定了前人的说法。事实上,《醉翁谈录》“舌耕叙引”所描写的是当时文人小说家的创作盛况,与说话艺术无关,书中所载小说作品皆为供阅读的案头小说,并非专门的“底本”。
Zuiweng tanlu醉翁谈录 (Collected Talks of a Drunkard), which has traditionally been regarded as a monograph on ancient art of storytelling, is thought to describe the extraordinary skills of the story tellers in the Song and Yuan dynasties and contain a lot of scripts used by those story tellers. Our examination of the origins and the evolutions of such notions as huaben话本 (storyteller’s script), shegeng舌耕(cultivation with tongue) and shuoshu说书(talk about books) as well as the style of the novels included therein falsifies the traditional categorization of the book. Rather than about the art of oral storytelling, the section of Shegeng xuyin舌耕叙引(introduction to cultivation with tongue) in Zuiweng tanlu is just a description of the thriving creation activities of the then novelists and the works included in the book are all the novels intended for reading instead of the scripts of oral storytelling
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