加拿大兽用抗菌药耐药性管理

文章全面介绍了加拿大兽用抗菌药耐药性的管理机构和管理措施,希望为中国兽药耐药性相关政策的制定和措施的实行提供一定的依据和参考。     

加拿大森林采伐管理制度及借鉴

世界各国通常都对林木采伐进行必要限制。通过对加拿大林业基本情况的简单介绍和森林采伐管理制度的系统分析, 总结了依法治林同政策激励结合、理论指导与分类管理对接、重视科研和公众参与互补的加拿大森林采伐管理特点及启示。     

对加拿大Nova Scotia农学院的访问及反思

文章首先从高难度、高速度教学原则,使学生理解学习过程和注重学生个体全面发展的原则,理论知识起主导作用、理论和实践相结合的原则,改进教学方法、注重学生创新能力培养的原则等方面讨论了加拿大Nova Scotia农学院的教学特点;其次介绍了该学校的科研、教学和管理模式;最后对现行农业院校的高等教育工作进行了反思。     

加拿大公共图书馆文创产品开发研究——以卡尔加里公共图书馆为例

[目的/意义]以卡尔加里公共图书馆为例,调查分析加拿大公共图书馆文创产品开发状况,为中国文创产品开发提供借鉴。[方法 /过程]通过文献调研和网络调研,指出了加拿大公共图书馆开发文化创意产品的优势,梳理了卡尔加里公共图书馆的文创产品类型,分析了创意因素来源和开发推广模式,总结了该图书馆文创产品开发的特点。[结果 /结论]提出了中国公共图书馆文创产品开发可供借鉴之处。     

加拿大体育非诉讼纠纷解决机制的运行特点及启示 ——以加拿大体育纠纷解决中心为例

加拿大体育非诉讼纠纷解决机制的运行具有教育性、经济性、灵活性、权威性、民间性、制度化等特点。要打破我国体育非诉讼纠纷解决机制建设的瓶颈，应借鉴加拿大体育非诉讼纠纷解决机制的先进经验，组建专门性体育非诉讼纠纷解决机构，加强体育非诉讼纠纷解决机制的监督和支持力度，完善体育非诉讼纠纷解决机制的立法工作，注重运动员体育纠纷相关法律知识的普法宣传与教育工作。     

Effects of migratory geese on nitrogen availability and primary productivity in subarctic barley fields

 Migratory geese affect agricultural production by removing biomass and by depositing fecal nutrients. This study used ¹⁵N as a tracer to examine the quantitative effects of goose fecal N contributions on agricultural production. Barley (Hordeum vulgare cv. Datal) was grown for the production of ¹⁵N-labeled grain and straw. Two Canada geese (Branta canadensis Taverners) were fed the grain after harvest to obtain ¹⁵N-labeled and unlabeled feces. Net N mineralization and micro-plot studies both indicated that in comparison to barley grain and straw, goose feces provided the greatest amount of available N to the soil and to the subsequent crop, and consequently higher barley yields (59% and 62% increase, respectively). However, C mineralization was greater from grain, with 56% evolved compared to 49% and 26% for feces and straw, respectively. Goose feces also provided the greatest addition of N for the barley plants, with fertilizer N recovery efficiency (FNRE) of 16%, compared to FNRE of 10% from the grain amendment, and 1.2% from the straw amendment. The amount of N available in fecal material from leftover grain consumed by grazing geese is small in comparison to total crop needs, but is a potential source of mineral N during the critical early growth of crops grown in cold, high-latitude soils. Received: 16 May 1999     

入侵植物加拿大一枝黄花的高光谱特性研究

加拿大一枝黄花（Solidago canadensis L.）原产北美,是一种世界性的入侵性外来杂草,目前正在我国东、南部地区迅速扩散,严重威胁生态系统生物多样性和农林业生产。该研究利用美国ASD公司生产的ASD FieldSpec ProFRTM光谱辐射仪,测定了杭州湾地区加拿大一枝黄花的冠层表观反射率光谱,并分析了其高光谱反射率特征。结果显示：黄光区域内基于位置和面积的高光谱特征参量Dy、λy和SDy具有较小的变异系数,可以作为识别加拿大一枝黄花的特征参量。研究表明：利用高光谱遥感技术来识别外来入侵杂草是可行的。     

美国和加拿大冷库维护保养中的节能技术研究

根据对美国和加拿大62个公用冷库调查的第一手资料，介绍和分析了美国和加拿大冷藏库维护保养中的节能技术及其动态，着重剖析可供中国制冷行业借鉴和深入研究的维护保养及相关设备方面的问题。     

Predicting water absorption of wheat flour using high shear-based GlutoPeak test

Selection for water absorption, a fundamental wheat quality parameter, has been a challenge in wheat breeding programs due to limited wheat materials available for milling and consequent time-consuming farinograph test. Hence, a high shear-based method, which requires 8 g of flour and less than 10 min per test, was proposed to predict flour water absorption using the Brabender GlutoPeak instrument. Highly significant positive linear relationship (r² = 0.97) was found between GlutoPeak maximum torque and farinograph water absorption for 83 flour samples prepared with Bühler test mill from wheat lines under evaluation in the Canadian wheat variety registration trials. Similar strong correlation (r² = 0.96) was obtained from flours (n = 63) prepared with Quadrumat Junior laboratory mill using small amount of wheat. Flour prepared either with Bühler test mill or Quadrumat Junior mill can be used for predicting water absorption effectively. GlutoPeak maximum torque was found to be independent of dough strength (r² = 0.02) as measured by extensigraph. GlutoPeak test can be a powerful tool for rapid and reliable prediction of water absorption of wheat flour.