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大气中非线性波动的非频散解——I.拟能影响函数及其应用 大气中非线性波动的非频散解——I.拟能影响函数及其应用
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-09-10 DOI: 10.1360/ZB1987-17-9-1011
张铭 黄思训
{"title":"大气中非线性波动的非频散解——I.拟能影响函数及其应用","authors":"张铭 黄思训","doi":"10.1360/ZB1987-17-9-1011","DOIUrl":"https://doi.org/10.1360/ZB1987-17-9-1011","url":null,"abstract":"本文讨论大气中非线性波动的非频散解。在引入相角函数后,把大气中非线性偏微分方程组化为非线性常微分方程组。在系统的平衡点及奇异点附近讨论轨线性质,得到了非线性波动的一系列解析表达式。本文第一部分主要讨论二个问题1.拟能及拟能影响函数与非线性波解的关系,通过对拟能影响函数的讨论,可以判定周期解、孤波解、间断周期解与间断孤波解的存在条件,并且指出外界扰动若使拟能影响函数发生微小变化,则会导致孤立波的产生。2.间断周期解存在性讨论及函数逼近方法的使用。在求近似解过程中往往采用Taylor展开方法,但带来许多麻烦,本文对拟能影响曲线采用函数逼近的方法收到了良好的效果。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127782822","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
TWO TYPES OF CHANGE IN SENSITIVITY DURING LIGHT ADAPTATION IN CAT RETINA 猫视网膜光适应过程中敏感度的两种变化
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-08-10 DOI: 10.1360/YB1987-30-8-842
Shou Td
{"title":"TWO TYPES OF CHANGE IN SENSITIVITY DURING LIGHT ADAPTATION IN CAT RETINA","authors":"Shou Td","doi":"10.1360/YB1987-30-8-842","DOIUrl":"https://doi.org/10.1360/YB1987-30-8-842","url":null,"abstract":"The electroretinograms (ERG) were recorded during light adaptation at various levels of background in the urethane-anaesthetized cat. Our previous assumption that for a fixed background all the stimulus strength-response amplitude curves at any moment during light adaptation were similar in slope[1] has been confirmed experimentally. It thus offers a method to deduce the transient sensitivity from b-wave amplitude. Two kinds of change in retinal sensitivity were observed during light adaptation according to the strength of adapting light. When a dim adapting light was used the sensitivity decreased suddenly and then remained at a low level, as soon as the adapting light was over 10(3) scotopic td the initial decrease in sensitivity was followed by a partial recovery within 10 min after the onset of adapting light. It is suggested that the sensitivity recovery is related to the degree in which cones are released from rod suppression and participate in the generation of the b-wave.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127232480","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
烯烃光敏氧化反应机理——I.富电子烯烃与单线态氧1,2-加成反应机理的量子化学研究 烯烃光敏氧化反应机理——I.富电子烯烃与单线态氧1,2-加成反应机理的量子化学研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-08-10 DOI: 10.1360/ZB1987-17-8-821
刘新厚, 杨丹娅, 于建国, 刘若庄
{"title":"烯烃光敏氧化反应机理——I.富电子烯烃与单线态氧1,2-加成反应机理的量子化学研究","authors":"刘新厚, 杨丹娅, 于建国, 刘若庄","doi":"10.1360/ZB1987-17-8-821","DOIUrl":"https://doi.org/10.1360/ZB1987-17-8-821","url":null,"abstract":"本文用量子化学(简称量化)的半经验及从头算法对氨基乙烯及乙烯与单线态氧1,2-加成反应机理进行了研究。首先应用MINDO/3辅以Powell法对两个体系各基元过程过渡态进行了优化。得到了与前人不同的结构。而后利用Fukui提出的IRC理论计算了这两个体系整个反应途径。计算结果不但证实我们所得过渡态结构的可靠性,也证实对于富电子烯烃,反应确实经由两性离子中间体。同时基于反应途径对反应全过程进行了详细分析并结合从头算相互作用能的分解对取代基电子效应提出了较为深入合理的理论解释。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116392521","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
小鼠粒细胞白血病细胞体外细胞系L 833 的建立及其生物学特性的研究 小鼠粒细胞白血病细胞体外细胞系L 833 的建立及其生物学特性的研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-07-10 DOI: 10.1360/ZB1987-17-7-724
李新兰, 高凤鸣, 赵乃坤, 王文惠, 杜维霞, 刘秀敏, 蒋涵英, 黄桦, 葛忠良, 刘秀珍, 藉秀娟, 刘洪祥
{"title":"小鼠粒细胞白血病细胞体外细胞系L 833 的建立及其生物学特性的研究","authors":"李新兰, 高凤鸣, 赵乃坤, 王文惠, 杜维霞, 刘秀敏, 蒋涵英, 黄桦, 葛忠良, 刘秀珍, 藉秀娟, 刘洪祥","doi":"10.1360/ZB1987-17-7-724","DOIUrl":"https://doi.org/10.1360/ZB1987-17-7-724","url":null,"abstract":"本文用小鼠可移植性粒细胞白血病瘤株L 801 的骨髓细胞,经体外培养建立了粒细胞白血病细胞系(株),定名为L 833 。三年来在体外已传至280余代,细胞生长迅速稳定,经不同途径动物接种致瘤率均为100％。经细胞学、细胞化学、病理学和超微结构等检查,均证明本细胞系(株)仍为粒细胞白血病细胞。L 833 细胞系细胞染色体分析证明仍然是亚二倍体,众数39条,Y染色体丢失和存在一个标记染色体。L 833 -A和L 833 -B(利用半琼脂法分选出的细胞集落定名为A和B)染色体除了上述变化外,还各自存在一个标记染色体。本系细胞对所用各类抗癌药物均有不同程度的敏感性。对辐射(γ线)也很敏感,L 833 和L 833 -A的D 0 值分别为98.8和104.9 rad。其结果和L 801 基本是一致的,它的建立不但对于深入研究白血病和其药物筛选等有重要意义,而且利用体外瘤株进行有关研究更直观、经济和易于进行精确定量研究。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"57 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116265208","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
CH 2 =N=N→N=N CH 2 反应的过渡态及其反应途径的理论研究 CH 2 =N=N→N=N CH 2 反应的过渡态及其反应途径的理论研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-07-10 DOI: 10.1360/ZB1987-17-7-677
唐敖庆 程寒松
{"title":"CH 2 =N=N→N=N CH 2 反应的过渡态及其反应途径的理论研究","authors":"唐敖庆 程寒松","doi":"10.1360/ZB1987-17-7-677","DOIUrl":"https://doi.org/10.1360/ZB1987-17-7-677","url":null,"abstract":"本文讨论了用能量梯度法,在用MINDO/3自洽场方法计算得到的位能面上,分別优化得到线型和三员环型重氮甲烷以及这个单分子反应的过渡态的几何构型。研究了体系在过渡态的九种振动模式和反应途径。体系在反应途径上的每一点都保持 C S 点群的对称性。轨道相关图表明反应是对称性允许的。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"81 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113959396","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
TbP 5 O 14 中Tb 3+ 离子 5 D 4 , 7 F J ( J =0—6)的Stark能级 TbP 5 O 14 中Tb 3+ 离子 5 D 4 , 7 F J ( J =0—6)的Stark能级
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-07-10 DOI: 10.1360/ZB1987-17-7-693
白玉白, 汤卓然, 赵永年, 李铁津玉白
{"title":"TbP 5 O 14 中Tb 3+ 离子 5 D 4 , 7 F J ( J =0—6)的Stark能级","authors":"白玉白, 汤卓然, 赵永年, 李铁津玉白","doi":"10.1360/ZB1987-17-7-693","DOIUrl":"https://doi.org/10.1360/ZB1987-17-7-693","url":null,"abstract":"本文测定了五磷酸铽单晶在77K下的偏振荧光光谱和红外吸收光谱。根据这些光谱 5 D 4 , 7 F多重态的能级结构以及跃迁归属已被确认。从X光结构分析的结果,该晶体中Tb 3+ 离子与八个近邻的氧原子相配位,呈稍歪扭的正方反棱柱体。换句话说,在TbP 5 O 14 中Tb 3+ 离子的局部对称性属于 C 4 v 。按该对称性,利用配位场理论所做的计算与实验观察的 7 F J ( J =0—6)多重态的Stark分裂得到了相当好的符合。其结果是,均方根差为8.4cm -1 ,最大偏差为17cm -1 )。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116692777","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
THE REFINEMENT OF CRYSTAL STRUCTURE OF BALIPHOLITE 重晶石晶体结构的细化
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-07-10 DOI: 10.1360/YB1987-30-7-779
P. Zhizhong, M. Zhesheng, Han Shaoxu
{"title":"THE REFINEMENT OF CRYSTAL STRUCTURE OF BALIPHOLITE","authors":"P. Zhizhong, M. Zhesheng, Han Shaoxu","doi":"10.1360/YB1987-30-7-779","DOIUrl":"https://doi.org/10.1360/YB1987-30-7-779","url":null,"abstract":"Balipholite is a new mineral discovered in China. Its space group is C cca with the lattice parameters a =13.587(6), b =20.164(10), c =5.144(1). The structure was refined to an R value of 0.047 for 949 independent reflections with (|F0|>3σ|F0|). Balipholite has the simailar structure as that of the carpholite group but with large cations Ba occupying the caves of the structure. It is very interesting to point out that the additional anions F and OH occupy different crystallographic positions. Formula of balipolite can he written a BaMg2LiAl3(Si2O6)2(OH)4F4.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127216725","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: 4
甲型肝炎减毒活疫苗的研究——I.不同毒力毒株的猴体试验 甲型肝炎减毒活疫苗的研究——I.不同毒力毒株的猴体试验
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-06-10 DOI: 10.1360/ZB1987-17-6-625
毛江森, 谢汝英, 黄海鹰, 柴少爱, 陈念良, 余佩华, 汪岫芝, 刘春江, 曹逸云, 董德祥, 练幼辉, 邹永健, 梁悟生, 李华, 陈统球
{"title":"甲型肝炎减毒活疫苗的研究——I.不同毒力毒株的猴体试验","authors":"毛江森, 谢汝英, 黄海鹰, 柴少爱, 陈念良, 余佩华, 汪岫芝, 刘春江, 曹逸云, 董德祥, 练幼辉, 邹永健, 梁悟生, 李华, 陈统球","doi":"10.1360/ZB1987-17-6-625","DOIUrl":"https://doi.org/10.1360/ZB1987-17-6-625","url":null,"abstract":"三株减毒水平不同的甲型肝炎病毒株H2M20(35℃),H2M20(32℃),H2M20,K5(32℃),各接种4只恒河猴,3—10周后甲肝抗体全部阳转,接种后16周的抗体滴度:H2M20(35℃)达1:160—1:640,H2M20(32℃)为1:40—1:160,H2M20K5(32℃)为1:20—1:40。猴接种病毒后16周内,每周检测了SGPT,LDH5,部分猴进行了肝穿活组织检查。结果说明,H2M20(35℃)属强毒力反应,而H2M20K5(32℃)接种的4只恒河猴未观察到有任何肝炎指征,属弱毒株反应。在毒力和抗体反应方面,H2M20K5(32℃)是值得进一步研究的甲型肝炎减毒疫苗候选株。文中提出了恒河猴检定甲肝病毒毒力反应的判断标准。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128160223","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
Establishment of a human/Chinese hamster hybrid clone panel. 建立人类/中国仓鼠杂交克隆小组。
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-06-10 DOI: 10.1360/YB1987-30-6-630
Xu Yun, Q. Xinfang, Xue Jinglun, Hsueh, Zhou Jie-min, Xu Yiling
{"title":"Establishment of a human/Chinese hamster hybrid clone panel.","authors":"Xu Yun, Q. Xinfang, Xue Jinglun, Hsueh, Zhou Jie-min, Xu Yiling","doi":"10.1360/YB1987-30-6-630","DOIUrl":"https://doi.org/10.1360/YB1987-30-6-630","url":null,"abstract":"Combined with the chromosome G-banding, followed by Giemsa-11 techniques and chromosomal marker isozyme analysis, 6 out of 200 subclones have been analyzed in detail. A primary hybrid clone panel has been established, which can be used to map genes on chromosomes 4, 5, 8, 12, 20 and 22. Since the panel contains deleted chromosomes 4, 5, 8 and 12, genes on these chromosomes can be mapped regionally.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115737312","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
对大气湍流(chaos)发生问题的探讨 对大气湍流(chaos)发生问题的探讨
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1987-06-10 DOI: 10.1360/ZB1987-17-6-669
郑祖光, 刘式达, 张宏剑
{"title":"对大气湍流(chaos)发生问题的探讨","authors":"郑祖光, 刘式达, 张宏剑","doi":"10.1360/ZB1987-17-6-669","DOIUrl":"https://doi.org/10.1360/ZB1987-17-6-669","url":null,"abstract":"利用包括温度平流的Burger's-巢纪平方程的截谱模型,探讨了三个参数(Ri数,Re数和Pr数)在湍流发生中的作用。分析表明,只有Ri 2 π 2 )才有可能产生湍流。Pr数太小(对大气Pr=0.7),只有考虑到基本场和扰动场的相互作用或加进“粘性”才有可能出现湍流。看来出现浑沌,必须考虑温度平流。在参数平面(Ri,Re)上,将大气运动状态分成基本态 O 区、周期态 P 区、浑沌悉T区以及周期浑沌区 T-P 区是适宜的,比较符合实际。最后讨论了湍流发生的物理原因。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115219366","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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