| 查看: 959 | 回复: 5 | |||
| 本帖产生 1 个 LS-EPI ，点击这里进行查看 | |||
[求助]
请问文献“CA 50: 697b”含义
|
|||
| 各位大侠好，看了一篇古老的论文，参考文献是CA 50: 697b，查出来是美国化学文摘，但CA之后都是啥意思啊？还有如何查找呢？非常感谢。 |
回复此楼» 猜你喜欢
一志愿武理085500机械专业总分300求调剂
已经有6人回复
-
材料学求调剂
已经有5人回复
-
考研调剂
已经有4人回复
-
281求调剂
已经有4人回复
-
0805 316求调剂
已经有6人回复
-
085601求调剂总分293英一数二
已经有3人回复
-
08工学调剂
已经有17人回复
-
340求调剂
已经有4人回复
-
311求调剂
已经有3人回复
-
食品专硕 一志愿双一流 328
已经有4人回复
wangzhipengj
至尊木虫 (文坛精英)
- LS-EPI: 4
- 应助: 240 (大学生)
- 金币: 21356.1
- 散金: 5
- 红花: 43
- 帖子: 10888
- 在线: 551.1小时
- 虫号: 1702123
- 注册: 2012-03-19
- 专业: 高分子合成化学
2楼2013-06-23 17:37:31
baiyuefei
版主 (文学泰斗)
风雪
- LS-EPI: 1647
- 应助: 4642 (副教授)
- 贵宾: 46.969
- 金币: 658104
- 散金: 11616
- 红花: 995
- 沙发: 81
- 帖子: 69424
- 在线: 13328.4小时
- 虫号: 676696
- 注册: 2008-12-18
- 性别: GG
- 专业: 合成药物化学
- 管辖: 有机交流
【答案】应助回帖
★ ★
yaolan123: 金币+2, 感谢应助，奖励一下 2013-06-23 21:27:55
oven1986: 检索EPI+1, 感谢应助。 2013-08-16 11:06:15
yaolan123: 金币+2, 感谢应助，奖励一下 2013-06-23 21:27:55
oven1986: 检索EPI+1, 感谢应助。 2013-08-16 11:06:15
|
用网络版的CA查询即可，就可得知具体是什么文献的，查询结果如下，1或2，不知哪个是你需要的，自己选择下吧 1. A rapid determination of total pinenes in a mixture of terpenes By: Bardyshev, I. I.; Chernyaeva, O. I.; Litvinova, A. N. The method is based on changes of temp. owing to the isomerization, polymerization, and partial esterification of α- and β-pinenes (I) with AcOH and H2SO4 under standardized exptl. conditions avoiding the reaction of other turpentine constituents. The app. consisted of a thermostat, a Dewar flask, two 10-cc. pipets (with siphoned lower parts which made it possible to keep them inserted in the thermostat), two thermometers (one inside the Dewar flask, the other outside), and a hand stirrer. The temp. was kept at 25 ± 0.1°. The reagent was prepd. by mixing 100% AcOH and 50% H2SO4 in vol. proportions 10:1. α-Pinene (b. 155-6°, nD20 1.4653-1.4656, d420 0.8578-0.8582) was used as the standard. A plot of the temp. differences, Δt, against the contents of α-pinene in the mixt. gave a straight line. Since at low concns. of I it took around 30 min. to reach the max. temp. a mixt. of pure α-pinene and the substance being analyzed was prepd. in the ratio 1:1. The amt. of I in this case was calcd.: x = 2 (a - 50), where a represented α-pinene in the mixt. In the presence of larger quantities of β-pinene 1.5% was subtracted from a. Smaller quantities of camphene did not interfere. This method is superior to the fractionation method. Gidroliznaya i Lesokhimicheskaya Promyshlennost Volume8 IssueNo. 2 Pages15-17 Journal 1955 CODEN:GLKPA2 ISSN:0016-9706 2. Mixed (lichenoid and macular) cutaneous amyloidoses Toribio J; Quinones P A; Virgil T R; Santa-Cruz C S Between October 1972 and Paril 1974 a total of four patients suffering from lichen amyloidosus were admitted to the wards of the Department of Dermatology, University Hospital, Valladolid. All these patients also showed a macular amyloidosis associated with the lichenoid eruption. The authors emphasize that macular amyloidosis is quite commonly found as an associated and closely related condition in lichen amyloidosus. Acta dermato-venereologica Volume55 Issue3 Pages221-6 Journal; Article; (JOURNAL ARTICLE) 1975 ISSN:0001-5555 Journal Code:0370310 Sweden |
gmway3楼2013-06-23 17:49:54
baiyuefei
版主 (文学泰斗)
风雪
- LS-EPI: 1647
- 应助: 4642 (副教授)
- 贵宾: 46.969
- 金币: 658104
- 散金: 11616
- 红花: 995
- 沙发: 81
- 帖子: 69424
- 在线: 13328.4小时
- 虫号: 676696
- 注册: 2008-12-18
- 性别: GG
- 专业: 合成药物化学
- 管辖: 有机交流
4楼2013-06-23 17:51:00
5楼2013-08-16 08:45:12
6楼2013-08-16 08:47:22
5