排序方式： 共有16条查询结果，搜索用时 15 毫秒
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黄海丽 《唐山师范学院学报》2010,32(5):66-69
从唐山师范学院花房中采集菘蓝根腐病病根并对其进行了病原菌的分离、纯化和鉴定及不同浓度、不同分子量的壳聚糖对菘蓝根腐病病原菌的室内抑菌作用。结果表明：分离纯化得到致病菌经鉴定为半知菌亚门（Deuteromycotina）、丝孢纲（Hyphomycetes）,丛梗孢目（Stilbellales）、瘤座孢科（Tuborculadales）、镰刀属（Fusarium）真菌。在一定浓度范围内,分子量为3KD、50KD的壳聚糖随着浓度的提高,其抑菌效果也逐渐增强,6mg／ml的效果最好;分子量为150KD时,3mg／ml的效果最好;在一定分子量范围内,除0．75mg／ml的浓度外,随着壳聚糖分子量的提高,其抑菌效果也逐渐增强,分子量150KD的效果最好;本试验中,最大抑菌率为61％。 相似文献
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从学校体育学科在“育人”方面所发挥的作用着眼,阐述了学校体育学科的特征、体育教师职业劳动的特殊性和其显性与隐性的价值,并指出了当今社会和学校中重智轻体的现象仍普遍存在,导致体育学科在学样地位较低。同时,期待体育教师的职业劳动和所创价值能得到社会和学校的公正评价。 相似文献
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张伦学 《贵州教育学院学报》2003,19(1):31-34
孔子的“德治”思想要求为政者必须承担起领导责任,以身作则,为臣民之表率。为政者必须气量宽宏,慧眼独具,礼贤下士,尚贤重才。为人表率,尚贤重才,乃是为政者良好德行的体现。 相似文献
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可持续发展是“在不损害未来世代满足其发展要求的资源基础的前提下的发展”,其宗旨十分明确:代际公平。所以,对世代赖以生存的自然资源进行公平合理的代际分配,是可持续发展的本质和中心议题,是实现可持续发展的必由之路。本文借助于微观经济学的艾奇沃思方框图,分析了人类社会代际资源配置的两种情形,提出了实现代际资源配置的基本思路:树立全新的价值评判标准和决策依据,合理开发、科学利用和尽量节约自然资源,将自然资源的核算纳入国民核算体系,建立绿色国民账户。 相似文献
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以菘蓝离体叶片为外植体,研究了激素种类和浓度、接种方式、光照条件等因素对叶片再生的影响,建立了菘蓝离体叶片高频再生体系.结果表明:以MS+6-BA2.0 mg/L+NAA0.2 mg/L+3%蔗糖为培养基,接种后暗培养5天转到光下培养,叶片远轴面向下接触培养基对不定芽的再生最为有效,不定芽不经过愈伤组织阶段直接从叶片上分化产生,再生率高达93.10%.以1/2MS为培养基附加0.1 mg/LNAA可使不定芽生根率达到100%. 相似文献
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李凯中 《湖南科技学院学报》2005,26(3):197-200
“和平崛起”的发展道路是中国独立自主的价值选择,中国立足于自己的力量来来实现和平崛起。崛起的中国,将会更好地巩固自己独立自主的地位,对世界和平与人类文明作出自己的新贡献。 相似文献
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《Africa Education Review》2013,10(5):60-69
AbstractHigher education institutions (HEIs) are drivers of social change embedded in a society which is experiencing increasingly complex and multifaceted crises. This is partly attributable to the use of conventional and deterministic problem-solving curricula. A combination of a transdisciplinary approach and indigenous knowledge (IK) as transformative tools in complex systems is critical for pedagogy. This interface embraces the African heritage in Western epistemology putting it on a curricula pedestal which is currently Western-oriented. This article shows how a transdisciplinary approach and IK can transform pedagogies in HEIs through mutual learning and dialogue across disciplines by reflecting on the Life Knowledge Action/Grounding Programme which is a course offered at the University of Fort Hare, South Africa. The article suggests an integration of transdisciplinarity and IK as powerful catalysts for transformation in pedagogical design. 相似文献
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基于维护家庭稳定和社会伦理秩序的要求,世界各国和地区刑事法律中都规定了亲属拒证权。从价值论的角度来说,亲属拒证权对社会价值的保护超过了惩罚犯罪所带来的利益,符合民众普遍的法律情感。我国古代法律中的“亲亲相隐”对于人性、人情以及伦理价值的维护与亲属拒证权可谓别无二致。新修订的《刑事诉讼法》第188条的规定是不完全的“亲属拒证权”。这种不完全的“亲属拒证权”并未免除亲属证人的作证义务,也无法实现特免权制度所要保障的价值和目标。 相似文献
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Charles D. Holley Donald F. Dansereau Selby H. Evans Karen W. Collins Larry Brooks David Larson 《Contemporary educational psychology》1981,6(3):227-236
This study examined the utility of intact (i.e., topic outline format) and embedded (i.e., appropriately positioned within the text) headings as processing aids with nonnarrative text. The argument was advanced that headings potentially provide useful cues for both input and output processing but that little empirical evidence exists to either support or refute this proposition. It was further argued that each of the prior studies reviewed were subject to one or more methodological criticisms which may attenuate the generality of the findings. The results of the present study indicated that no advantage accrued to students on the basis of training; however, limitations of this finding are discussed in terms of the amount of training provided and the time available to the students for integrating the new strategies with their existing techniques. The major result of this investigation was that students provided with text containing intact and embedded headings significantly outperformed students whose text did not contain these processing aids. The major benefits were observed at delayed testing; the text-with-headings students recalled approximately 11% more information at immediate testing and 44% more information at delayed testing than the text-without-headings students. Implications of these results and future research issues are discussed. 相似文献