Alder相关论文
Assessing a novel modelling approach with high resolution UAV imagery for monitoring health status i
Background:Black alder(Alnus glutinosa)forests are in severe decline across their area of distribution due to a disease ......
应用生成物和反应物之间的共振能差(△RE_(BRC))可以判定多环苯型烃与马来酐起Diels—Alder反应的活性和确定反应中心。△RE_(BRC)......
Correlations between the ages of Alnus host species and the genetic diversity of associated endosymb
Nodule samples were collected from four alder species: Alnus nepalensis, A. si-birica, A. tinctoria and A. mandshurica g......
本文用实验事实和现代理论对Diels—Alder反应进行了探讨,重点讨论了它的协同性、立体专一性、立体有择知方位有择等问题。在对该......
This paper presents preliminary assessment of seedling survival and growth of green alder(Alnus viridis(Chaix) DC. in La......
Spatial and Temporal Distributions of Soil Organic Matter in the Mixed Plantations of Alder and Cypr
The investigation was conducted on the spatial and temporal distributions of soil organic mater (SOM) in the mixed plant......
以氯化锌为路易斯酸催化剂，探讨了２─亚甲基─１─苯基─１．３─丁二酮与１．３─环戊二烯的Ｄｉｅｌｓ─Ａｌｄｅｒ反应。在－７８℃时，氯化锌作为催化剂，得到高的非对映异构选......
本文针对Drels—Alder反应的协同反应机理,运用前线轨道理论的图解方式讨论该反应的特点。
Aiming at the synergetic reaction m......
1.3—双烯和烯类进行环加成,形成六元环的反应叫Diels—Alder反应,又称双烯合成,可表示如下: 双烯体 亲双烯体 加成物 该反应是19......
The tricyclic compoun d (2) C20H28O6 has been synthesized through thereaction of IMDA. The crystals of the title compoun......
由Ｄｉｅｌｓ－Ａｌｄｅｒ反应合成新型热稳定性含硅双马来酰亚胺──合成及表征郝建军，江璐霞，蔡兴贤（四川联合大学材料科学与工程学院高分子材料系，成都，６１００６５）关键......
Macroscopic fungi on Caucasian alder wood (Alnus subcordata) were identified and tested as a source of betulin and betul......
Organic matter contribution to soil fertility improvement and maintenance in red Alder (Alnus rubra)
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
指出了湿地松为适应性、产脂量大、木材利用价值高的树种,对湿地松、桤木幼林混交营造效果进行了初步分析,结果表明：混交方式不同,......
桤柏混交林是紫色土的主要人工混交类型,在长江防护林建设中有重要作用。根据1983年营造的8种混交模式林分,研究了桤柏混交改良土......
桤木在四川盆地中北部山丘区,普遍具有良好的结瘤能力:单株五年生林木结瘤量40～160g(鲜重),十年生最佳达200g左右.而在盆地南部酸性......
<正> 1928年,两位德国化学家O.Diels和K.Alder共同发现共轭烯烃和单烯烃在加热时容易反应而得到六员环化合物:......
Diels-Alder反应在有机合成化学中占有极重要的地位,它是合成六元环状化合物的有效方法之一。几乎早在1928年发现Diels-Alder反应......
就桤木商用种植的生产潜力、制浆造纸和材性研究现状等进行综合评述。桤木是一种商用种植较有发展前景的阔叶树种，生长迅速、固氮能......
【正】目的:对将一种新的疼痛评定手段AlderHey伤员拣别分类中疼痛评分(AHTPS)应用于遭受意外或急诊(A&E)患儿以进行拣别分类的可......
Up to now, the search for an efficient artificial diet to rear the predator Eriopis connexa, native to the Colombian hig......
Macroscopic fungi on Caucasian alder wood(Alnus subcordata)were identified and tested as a source of betulin and betulin......
为了筛选氮素利用率最高的氮肥，本试验选择了活性炭缓释氮肥、一般缓释氮肥、尿素3种肥料，针对不同树高级的桤木开展了外援施氮试验......
Effects of afforestation of agricultural land with grey alder(Alnus incana(L.) Moench)on soil chemic
Background: Natural afforestation of former agricultural lands with alder species is common in Europe. Symbiotic nitroge......
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