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小麦条锈病对小麦产量影响的研究——I.损失估计经验模型 小麦条锈病对小麦产量影响的研究——I.损失估计经验模型
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-05-10 DOI: 10.1360/ZB1988-18-5-505
曾士迈 杨小冰
{"title":"小麦条锈病对小麦产量影响的研究——I.损失估计经验模型","authors":"曾士迈 杨小冰","doi":"10.1360/ZB1988-18-5-505","DOIUrl":"https://doi.org/10.1360/ZB1988-18-5-505","url":null,"abstract":"1983—1984年和1984—1985年两生长季中同时在北京和郑州设点,就小麦条锈病(Puccinia striiformis tritici West.)对冬小麦燕大1817产量的影响进行了研究。在这两个不同的流行地区中,通过小区整体分期接种和间隔梯度喷药等方法,获得了流行表现种种不同的小区103个。利用这些数据分别建立了CP,MP,AUDPC三种模型,比较结果表明,CP模型最佳。本文还提出了一种AUDPC值标准化的方法。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131119054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
固体含能材料热分解过程的光电子能谱(XPS)研究——2,4,6-三硝基苯酚及2,4,6-三硝基吡啶热分解机理的探讨 固体含能材料热分解过程的光电子能谱(XPS)研究——2,4,6-三硝基苯酚及2,4,6-三硝基吡啶热分解机理的探讨
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-05-10 DOI: 10.1360/ZB1988-18-5-463
郎恒元建祺 王建祺
{"title":"固体含能材料热分解过程的光电子能谱(XPS)研究——2,4,6-三硝基苯酚及2,4,6-三硝基吡啶热分解机理的探讨","authors":"郎恒元建祺 王建祺","doi":"10.1360/ZB1988-18-5-463","DOIUrl":"https://doi.org/10.1360/ZB1988-18-5-463","url":null,"abstract":"本文对多硝基芳香酚类的热分解过程做了光电子能谱(XPS或ESCA)研究,并着重分析了分子中—OH基团在此类化合物的热分解过程中的重要作用。文中指出热分解过程中分子内电荷转移发生改变这一现象,并对它在研究热分解机理中的作用做了分析。配合CNDO/2量化计算,文中对热分解过程中固体表面上含氮结构的相对稳定性进行了理论上的探讨。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128924373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
大豆种子吸胀冷害与“修补”过程的探讨 大豆种子吸胀冷害与“修补”过程的探讨
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-04-10 DOI: 10.1360/ZB1988-18-4-395
郑光华, 燕义唐, 张庆昌
{"title":"大豆种子吸胀冷害与“修补”过程的探讨","authors":"郑光华, 燕义唐, 张庆昌","doi":"10.1360/ZB1988-18-4-395","DOIUrl":"https://doi.org/10.1360/ZB1988-18-4-395","url":null,"abstract":"本文选用对吸胀冷害敏感的大豆品种吉林3号和黑河3号种子为材料,系统测定种子本身各类电解质及细胞内其他可溶性物质外渗量与吸胀冷害发生的变化。同时运用电子显微镜扫描和组织化学的电子显微镜切片技术,从细胞和亚细胞水平上进行观察比较,并籍助于PEG渗透调控法加以印证。本文报道了上述一系列试验研究的结果,并就种子吸胀冷害的机理问题进行初步的探讨。作者在文中强调指出,要彻底阐明种子吸胀冷害的机理,必须从广义的“修补”角度着眼,即要分别从膜相的物理“修补”和细胞代谢的生理生化“修补”进行探索,更要在两者之间的联系上深入研究。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130308047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
5-烷基-5-对氟苯甲酰丙基巴比吐酸及硫巴比吐酸的晶体结构、构象分析及其立体选择性 5-烷基-5-对氟苯甲酰丙基巴比吐酸及硫巴比吐酸的晶体结构、构象分析及其立体选择性
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-04-10 DOI: 10.1360/ZB1988-18-4-339
徐筱杰, 关玥, 谷燕, 唐有祺, 金声
{"title":"5-烷基-5-对氟苯甲酰丙基巴比吐酸及硫巴比吐酸的晶体结构、构象分析及其立体选择性","authors":"徐筱杰, 关玥, 谷燕, 唐有祺, 金声","doi":"10.1360/ZB1988-18-4-339","DOIUrl":"https://doi.org/10.1360/ZB1988-18-4-339","url":null,"abstract":"5-烷基-5-对氟苯甲酰丙基巴比吐酸及硫巴比吐酸是一种强效镇静剂。药理实验发现这类化合物各种衍生物的生物活性有较大的差别。本文分析了其中三种化合物5-甲基-5-对氟苯甲酰丙基巴比吐酸、5-乙基-5-对氟苯甲酰丙基巴比吐酸和测定的5-甲基-5-对氟苯甲酰丙基硫巴比吐酸的晶体结构,运用量子化学DPCILO程序、分子力学OPEC程序及CNDO/2结合静电势计算程序对三种化合物进行了构象分析、分子堆积和分子静电势的计算,对这类药物与受体作用的机理作了初步探讨。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130775552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
钙钛石型复合氧化物La 1- x )Sr x FeO 3- λ 催化性能的研究——I.固体结构以及缺陷性质与催化性能的关系 钙钛石型复合氧化物La 1- x )Sr x FeO 3- λ 催化性能的研究——I.固体结构以及缺陷性质与催化性能的关系
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-04-10 DOI: 10.1360/ZB1988-18-4-351
于涛, 吴越, 吕光烈, 李旺荣, 林炳雄
{"title":"钙钛石型复合氧化物La 1- x )Sr x FeO 3- λ 催化性能的研究——I.固体结构以及缺陷性质与催化性能的关系","authors":"于涛, 吴越, 吕光烈, 李旺荣, 林炳雄","doi":"10.1360/ZB1988-18-4-351","DOIUrl":"https://doi.org/10.1360/ZB1988-18-4-351","url":null,"abstract":"本文根据X光结构分析,发现La 1- x Sr x FeO 3- λ 当 x 自0变化至1时,样品晶格中均存在氧的无序缺陷,随着Sr 2+ 的掺入,样品晶格发生畸变,进而有晶型上的变化。TG研究表明, x >0.5的样品在高温下有大量晶格氧逸出。对于La 1- x (Ca,Sr) x MO 3- λ (M=Mn,Fe,Co)三个体系的实验结果进行对比后认为,固体缺陷的产生受几何因素的影响,催化剂的活性与氧缺陷浓度及有序化程度有关。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121615826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PHOTOCHEMISTRY OF HYPOCRELLIN A (IV)——HYPOCRELLIN A-SENSITIZED PHOTOOXIDATION OF DIPHENYLAMINE hypocrellin a的光化学(iv)——hypocrellin a敏化二苯胺的光氧化作用
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-04-10 DOI: 10.1360/YB1988-31-4-411
Machado Jn, Zhang Mh, An Jy, Jiang Lj
{"title":"PHOTOCHEMISTRY OF HYPOCRELLIN A (IV)——HYPOCRELLIN A-SENSITIZED PHOTOOXIDATION OF DIPHENYLAMINE","authors":"Machado Jn, Zhang Mh, An Jy, Jiang Lj","doi":"10.1360/YB1988-31-4-411","DOIUrl":"https://doi.org/10.1360/YB1988-31-4-411","url":null,"abstract":"The photooxidation of diphenylamine is acetonitrile and methanol using Hypocrellin A as sensitizer will be reported in this paper. The products in the two solvents were isolated and identified. The reaction mechanisms were investigated. In acetonitrile, diphenylamine was oxidized by singlet oxygen to form N-phenyl-p-benzoquinonimine. In methanol, N-phenyl-p-benzoquinonimine was produced predominantly through a mechanism irrelevant to singlet oxygen. A small amount of diphenylamine reacted with methanol and singlet oxygen to give a novel product: N-phenyl-2-methoxy-p-benzoquinonimine.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131260064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
地球自转年际变化、El Nino事件和大气角动量 地球自转年际变化、El Nino事件和大气角动量
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-03-10 DOI: 10.1360/ZB1988-18-3-332
郑大伟, 罗时芳, 宋国玄
{"title":"地球自转年际变化、El Nino事件和大气角动量","authors":"郑大伟, 罗时芳, 宋国玄","doi":"10.1360/ZB1988-18-3-332","DOIUrl":"https://doi.org/10.1360/ZB1988-18-3-332","url":null,"abstract":"本文采用多级数字滤波技术,分析了25年(1962—1986年)的地球自转日长变化△LOD资料,结果表明在地球自转的长期起伏过程中,伴随着时间尺度为几年的非准周期性的年际波动,它使日长产生0.3×10 -8 量级的相对变化。通过年际日长变化时间序列与表征El Nio事件的东太平洋赤道带海温资料比较,发现地球自转年际速率的减慢和加快,与赤道海温的增暖和减暖现象存在着很好的一致性。根据较强的日长年际变化和赤道海温最大增暖现象,文中还分析了用全球带风资料所归算的大气角动量(AAM),发现其年际变化超前2—3个月。由此认为,地球自转的年际变化和El Nio事件,可能是固体地球和海洋各自对大气环流变异的响应。上述分析表明,利用天文常规观测所测定的UT_1资料,归算和监视△LOD序列的极小值,可以对El Nio事件作出预测期约为1年的长期预报。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"249 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131608971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Co(DBP) 2 ·3Py] 2 的合成、表征及晶体结构测定 [Co(DBP) 2 ·3Py] 2 的合成、表征及晶体结构测定
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-03-10 DOI: 10.1360/ZB1988-18-3-233
黄春辉, 张德龙, 章士伟, 徐光宪
{"title":"[Co(DBP) 2 ·3Py] 2 的合成、表征及晶体结构测定","authors":"黄春辉, 张德龙, 章士伟, 徐光宪","doi":"10.1360/ZB1988-18-3-233","DOIUrl":"https://doi.org/10.1360/ZB1988-18-3-233","url":null,"abstract":"本文合成了钴与磷酸二丁酯(HDBP)的络合物,经分析鉴定,其组成为[Co(DBP) 2 ·3Py·CHCl 3 (Py=吡啶),对络合物的热谱、红外、可见光谱及磁性进行了研究。得到了该络合物的单晶。结构研究表明,该晶体属于三斜晶系,P空间群,晶胞参数: α =14.490(10), b =15.721(7), c =20.109(12), α =90.37(4)°, β =96.04(5)°, γ =105.63(4)°。晶体中每2个钴通过2个DBP桥连成一个二聚分子,[[Co(DBP) 2 ·3Py] 2 ,分子中有对称中心,晶胞中含有二个[Co(DBP) 2 ·3Py] 2 分子和四个氯仿分子。每个钴除了与2个桥式的DBP上的氧配位外,还与3个吡啶上的N和一个DBP上的氧配位。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128789515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
轴Br - 配位含吡啶基十四元六氮大环配体Co(II)配合物的合成及性能研究 轴Br - 配位含吡啶基十四元六氮大环配体Co(II)配合物的合成及性能研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-03-10 DOI: 10.1360/ZB1988-18-3-245
黄玲, 廖代正, 王耕霖
{"title":"轴Br - 配位含吡啶基十四元六氮大环配体Co(II)配合物的合成及性能研究","authors":"黄玲, 廖代正, 王耕霖","doi":"10.1360/ZB1988-18-3-245","DOIUrl":"https://doi.org/10.1360/ZB1988-18-3-245","url":null,"abstract":"本文以CoBr 2 ·6H 2 O为模板,合成了2,6-二乙酰基吡啶与肼缩合的Co(Ⅱ)低自旋大环配合物,[Co(C 18 H 18 N 6 )Br 2 ]·(1/2)H 2 O。测试了配合物的红外光谱、远红外光谱、ESR谱、溶液及固体粉末的电子光谱及温变磁化率。推定了配合物组成及空间构型,运用配位场理论对电子光谱进行了指派,并根据这种指派用拟合方法推出配合物的结构参数Dq,Ds,Dt,B,dδ,dπ,通过这些参数对配合物性质进行了讨论。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126363074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
13 C-NMR化学位移与聚合物的构象——I.1,2-聚丁二烯乙烯基叔碳(-CH=)的 13 C-NMR谱研究 13 C-NMR化学位移与聚合物的构象——I.1,2-聚丁二烯乙烯基叔碳(-CH=)的 13 C-NMR谱研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-03-10 DOI: 10.1360/ZB1988-18-3-225
高原平, 周子南, 冯之榴
{"title":"13 C-NMR化学位移与聚合物的构象——I.1,2-聚丁二烯乙烯基叔碳(-CH=)的 13 C-NMR谱研究","authors":"高原平, 周子南, 冯之榴","doi":"10.1360/ZB1988-18-3-225","DOIUrl":"https://doi.org/10.1360/ZB1988-18-3-225","url":null,"abstract":"本文应用半经验方法来解析无规1,2-聚丁二烯乙烯基叔碳(—CH=)的 13 C-NMR谱图。研究指出只有主链CH与乙烯基叔碳之间的gauche排列和由此产生的屏蔽效应对后者的化学位移的改变作出了贡献。因此,可以直接利用键概率来归属十个五元组立构异构体的排列顺序。由于上述原因,得到了对于无规1,2-聚丁二烯乙烯基叔碳的 13 C-NMR谱的一种新的归属,并且通过研究全同和间同1,2-聚丁二烯的 13 C-NMR谱图予以证明。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133433182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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