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Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences最新文献

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SAPO-5及AlPO 4 -5分子筛表面羟基及酸性的红外光谱研究 SAPO-5及AlPO 4 -5分子筛表面羟基及酸性的红外光谱研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-10-10 DOI: 10.1360/ZB1988-18-10-1020
须沁华, 严爰珍, 徐开俊, 江善根
{"title":"SAPO-5及AlPO 4 -5分子筛表面羟基及酸性的红外光谱研究","authors":"须沁华, 严爰珍, 徐开俊, 江善根","doi":"10.1360/ZB1988-18-10-1020","DOIUrl":"https://doi.org/10.1360/ZB1988-18-10-1020","url":null,"abstract":"本文用红外光谱法以重水和吡啶为探针分子考察了AlPO 4 -5,SAPO-5和HZSM-5分子筛上的表面羟基和酸性质。结果表明,在SAPO-5上3745cm -1 ,3677cm -1 ,3630cm -1 和3520cm -1 附近出现四个羟基谱带,并且都是酸性羟基,而AlPO 4 -5仅在3677cm -1 和3630cm -1 处存在两个非常微弱的羟基峰。吡啶吸附的红外光谱实验结果进一步表明SAPO-5上同时存在B酸和L酸中心。从氨的程序升温脱附谱明显看出HZSM-5沸石上存在有强酸和中强酸两类酸中心,而AlPO 4 -5和SAPO-5上只有中强酸这一类酸中心,其总酸量和酸强度的大小次序为:HZSM-5>SAPO-5>AlPO 4 -5。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115724739","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
腺病毒(adenovirus)DNA的转录活性与宿主细胞核骨架(nuclear matrix)的关系 腺病毒(adenovirus)DNA的转录活性与宿主细胞核骨架(nuclear matrix)的关系
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-10-10 DOI: 10.1360/ZB1988-18-10-1052
陈枫J. A. NickersonS. Penman 翟中和
{"title":"腺病毒(adenovirus)DNA的转录活性与宿主细胞核骨架(nuclear matrix)的关系","authors":"陈枫J. A. NickersonS. Penman 翟中和","doi":"10.1360/ZB1988-18-10-1052","DOIUrl":"https://doi.org/10.1360/ZB1988-18-10-1052","url":null,"abstract":"本文用温和的选择性细胞抽提技术,提取腺病毒(adenovirus)感染6h的Hela细胞核内各种DNA组分,分别以腺病毒DNA的早期转录区(El a ,El b )与晚期转录区( L 2 )作探针进行Southern杂交,结果表明只有正在活跃转录着的腺病毒DNA片段才与宿主细胞核骨架紧密结合,从而说明宿主细胞核骨架可能对病毒DNA的转录有重要作用。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132294689","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
大鼠有核红细胞与小鼠浆细胞瘤(SP 2 /O)细胞杂交后的细胞表型特性分析 大鼠有核红细胞与小鼠浆细胞瘤(SP 2 /O)细胞杂交后的细胞表型特性分析
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-10-10 DOI: 10.1360/ZB1988-18-10-1076
薛社普 张庆一
{"title":"大鼠有核红细胞与小鼠浆细胞瘤(SP 2 /O)细胞杂交后的细胞表型特性分析","authors":"薛社普 张庆一","doi":"10.1360/ZB1988-18-10-1076","DOIUrl":"https://doi.org/10.1360/ZB1988-18-10-1076","url":null,"abstract":"本文选用从大鼠胚肝中分离的有核红细胞(中、晚幼成红细胞)与小鼠浆细胞瘤(SP 2 /O)细胞杂交,分析自然去核前的红细胞胞质对骨髓瘤细胞核恶性增殖的调控作用,以及晚幼期固缩核重新被激活的可能性。实验结果表明:(1)杂种细胞出现了与网织红细胞杂交同样的恶性表型逆转和去恶性化的特征,验证了我们有关哺乳类红细胞中存在调节恶性分裂物质的论点,这种物质在排核前的中、晚幼成红细胞中早已出现;(2)组化染色及蛋白电泳分析显示杂种细胞中出现正常分化的大鼠和小鼠珠蛋白基因产物血红蛋白,小鼠珠蛋白基因探针的分子杂交试验证明有小鼠珠蛋白基因的表达活动;(3)大鼠晚幼期固缩核于杂交后被重新激活而出现大鼠型珠蛋白基因产物血红蛋白。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124547331","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
AN EXPERIMENTAL STUDY ON LIQUID SEGREGATION OF NANLING GRANITES 南岭花岗岩液体偏析实验研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-09-10 DOI: 10.1360/YB1988-31-9-1122
Wang Liankui, Lu Jialan, Zhang Shaoli, Yang Wenjin, Xue Wenxin
{"title":"AN EXPERIMENTAL STUDY ON LIQUID SEGREGATION OF NANLING GRANITES","authors":"Wang Liankui, Lu Jialan, Zhang Shaoli, Yang Wenjin, Xue Wenxin","doi":"10.1360/YB1988-31-9-1122","DOIUrl":"https://doi.org/10.1360/YB1988-31-9-1122","url":null,"abstract":"Based on the characteristics of granites of the Nanling region, a procedure was specially designed to do experiment on the immiscible liquid phase. The starting materials were biotite granite + NnF + LiF. Under 1000 bar and 840℃, more than two immiscible liquid phases were produced from the homogeneous granite melt rich in F and Li. Electron microprobe data suggest that the immiscible liquid phases can be divided into (ⅰ) a silicate melt rich in F and Fe (melanocratic glass balls), (ⅱ) a silicate melt poor in F (matrix glass), and (ⅲ) a melt consisting mainly of fluorates (leucocratic glass balls). In conjunction with the chemical and mineral compositions, the structure and texture of granites in the Nanling region, the experimental results are discussed in this paper. The theory of liquid immiscibility can well account for the globular structure, glass inclusions pressent in minerals mineralized globular \"inclusions\", flow structure, banded structure and layer structure as are observed in Nanling granites.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131764422","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: 3
MOFe 3 S 4 类立方烷簇合物的合成研究 MOFe 3 S 4 类立方烷簇合物的合成研究
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-09-10 DOI: 10.1360/ZB1988-18-9-920
刘秋田, 康北笙, 陈昌能, 黄梁仁, 蔡进华, 庄伯涛, 卢嘉锡
{"title":"MOFe 3 S 4 类立方烷簇合物的合成研究","authors":"刘秋田, 康北笙, 陈昌能, 黄梁仁, 蔡进华, 庄伯涛, 卢嘉锡","doi":"10.1360/ZB1988-18-9-920","DOIUrl":"https://doi.org/10.1360/ZB1988-18-9-920","url":null,"abstract":"本文通过MoFe_3S_4类立方烷簇合物的合成途径(自兜反应及链状簇转化反应)的研究,归纳出合成过程特点,讨论了计量化学关系、配体氧化还原能力和配体结构对类立方烷原子簇结构及核心氧化态的影响,指出自兜反应可能由含结构单元的链状中间物的组合过程而进行。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129437659","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
一种良好的煤成油、煤成气的母质类型——泥炭藓煤热模拟有机地球化学特征 一种良好的煤成油、煤成气的母质类型——泥炭藓煤热模拟有机地球化学特征
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-09-10 DOI: 10.1360/ZB1988-18-9-995
陆杰, 张秀仪, 盛国英, 傅家谟, 张惠之
{"title":"一种良好的煤成油、煤成气的母质类型——泥炭藓煤热模拟有机地球化学特征","authors":"陆杰, 张秀仪, 盛国英, 傅家谟, 张惠之","doi":"10.1360/ZB1988-18-9-995","DOIUrl":"https://doi.org/10.1360/ZB1988-18-9-995","url":null,"abstract":"本文研究了云南金所第三纪褐煤盆地中泥炭藓煤在人工热模拟条件下产油、产气特征及元素组成、生物标记化合物等有机地球化学特征,并与同煤化程度的木质褐煤进行了对比。研究结果表明:随着成熟度的增高,泥炭藓煤具有很高的生烃能力:其最大生油率为501mg/g corg。,最大产烃量为232.1mg/g corg;在 R ran o 为2.51对,泥炭藓煤产气率达620.5ml/g corg。由于泥炭藓煤在成煤植物、成煤环境及物理化学性质上都不同于一般的腐植褐煤,因而是一种新的煤成油、煤成气的母质类型。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132626961","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
存在双二齿桥联硝酸根的二(氧化1,8-萘啶)合硝酸锶的合成、性质及结构 存在双二齿桥联硝酸根的二(氧化1,8-萘啶)合硝酸锶的合成、性质及结构
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-09-10 DOI: 10.1360/ZB1988-18-9-899
谭民裕, 甘新民, 孟益民, 殷小天, 王欣
{"title":"存在双二齿桥联硝酸根的二(氧化1,8-萘啶)合硝酸锶的合成、性质及结构","authors":"谭民裕, 甘新民, 孟益民, 殷小天, 王欣","doi":"10.1360/ZB1988-18-9-899","DOIUrl":"https://doi.org/10.1360/ZB1988-18-9-899","url":null,"abstract":"本文合成了硝酸锶与氧化1,8-萘啶组成为1:2的固体配合物。对配合物进行了元素分析、红外光谱、拉曼(Raman)光谱、荧光光谱、差热-热重谱图,溶解性及摩尔电导等测定。X射线单晶衍射结构分析表明,在配合物中存在一种文献中未曾报道过的双二齿桥联硝酸根。锶的配位数为10。","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123188448","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
China Gravity Basic Net 1985 中国重力基础网1985
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-09-10 DOI: 10.1360/YB1988-31-9-1143
Jia Zhiheng, Zuo Chuanhui, Qiu Qixian, Xu Shan
{"title":"China Gravity Basic Net 1985","authors":"Jia Zhiheng, Zuo Chuanhui, Qiu Qixian, Xu Shan","doi":"10.1360/YB1988-31-9-1143","DOIUrl":"https://doi.org/10.1360/YB1988-31-9-1143","url":null,"abstract":"The China Gravity Basic Net 1985 (CGBN85) which comprises 57 gravity stations, including 6 absolute gravity stations, was measured with LaCoste & Romberg gravimeter model G (LCR-G). Precise relative connections were also made between CGBN85 and several existing international standards. A whole adjustment was made by applying the parameter adjustment method, taking scale functions for each LCR-G meter into account. The nationwide new CGBN85 with an average internal accuracy ±8μGal [10~(-8)ms~(-2)] was then established and has been used, since its official appraisal, in gravimetric practices for two years. This shows that CGBN85 meets the requirements of modern earth sciences.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129562193","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
TRACE ELEMENTS GEOCHEMISTRY OF GRANITOID IN PANXI AREA 攀西地区花岗岩类微量元素地球化学特征
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-09-10 DOI: 10.1360/YB1988-31-9-1109
Yang Ruiuing, L. Defu
{"title":"TRACE ELEMENTS GEOCHEMISTRY OF GRANITOID IN PANXI AREA","authors":"Yang Ruiuing, L. Defu","doi":"10.1360/YB1988-31-9-1109","DOIUrl":"https://doi.org/10.1360/YB1988-31-9-1109","url":null,"abstract":"A lot of granitoid rocks occur in Panxi area, SW China, which were formed during Jinningnian-Chengjiangnian, Hercynian-Indosinian and Yenshanian. According to their trace elements geochemical and petrochemical characteristics, they can be divided into calc-alkaline and alkaline granites. The petrogenesis and magma sources of these granitoid rocks are different. The Jinningnian-Chengjiangnian granitoid rocks include Mopanshan granite body, Moshaying granite body and Lugu granite body. The Mopanshan body might be formed by partial melting of the lower crust and due to refusion of basic volcanic rocks. The magma source of the Moshaying and the Lugu bodies might be formed by partial melting of the upper crust. The Hongge-Ailanghe granites belonging to the Hercynian-Indosinian may be products of complex melting from the crust-mantle materials caused by the increase of temperature during rifting stage in the area. The Cida and Taihe alkaline granites belonging to the Hercynian-Indosinian might be derived from alkaline basaltic magma by differentiation. The Yenshanian Mianxi granite body might be derived from remelting of the upper crust during the closing stage of the rift valley.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123751543","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
INTRODUCING EXOGENOUS DNA INTO PLANTS AFTER POLLINATION——DNA TRAVERSE PATHWAY OF POLLEN TUBE TO REACH EMBRYONIC SAC 授粉后将外源DNA导入植物——DNA通过花粉管到达胚囊的途径
Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences Pub Date : 1988-09-10 DOI: 10.1360/YB1988-31-9-1080
Gong Zhenzhen, Shen Weifang, Zhou Guangyu, H. Junqi, Qian Siyng
{"title":"INTRODUCING EXOGENOUS DNA INTO PLANTS AFTER POLLINATION——DNA TRAVERSE PATHWAY OF POLLEN TUBE TO REACH EMBRYONIC SAC","authors":"Gong Zhenzhen, Shen Weifang, Zhou Guangyu, H. Junqi, Qian Siyng","doi":"10.1360/YB1988-31-9-1080","DOIUrl":"https://doi.org/10.1360/YB1988-31-9-1080","url":null,"abstract":"The technique of introducing exogenous DNA into plants through the pathway of pollen tube after pollination has been applied since 1978 for transformation of the egg, zygote or carly embryonic cells. By introducing the erogenous DNA containing the goal gene(s) into cotton and rice, several new varieties with economic value and genetic stability are obtained. Thus molecular breeding of crops can be realized by this biotechnique. The pollen tube pathway is demonstrated by tritium-labelled cotton DNA (> 50kb). The labelled DNA is injected into cotton ovaries from the center of the top 24 h after selfing. 30 min to 8 h later, the ovaries are removed. It is clearly shown that the exogenous DNA can only pass from the micrnphyle to the opened nucellus, and then reach the embryonic sac.  3H-DNA can be found in the embryonic sacs 30 min after injection. In more than 80％ of the embryonic sacs 3H-DNA can be seen between 2 and 4 h after injection. No ~3H-DNA is found inside the pollen tubes. Therefore it is not through the pollen tube that DNA is carried into the embryonic sac. It is pathway of the pollen tube through which the DNA passed.","PeriodicalId":223601,"journal":{"name":"Science in China Series B-Chemistry, Biological, Agricultural, Medical & Earth Sciences","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115546219","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: 11
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