G*******4
发帖数: 117 | 1 any tip for drawing med from a 1 ml ampule without touching the rim and
sides of the ampule? The filter is big, but the ampule is small... help!!
Thanks! |
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d*********r
发帖数: 11979 | 2 triflate oxide. liquid in ampule.
5 毫升装的，ampule，只需要用 不到1毫升。这个需要在 inert gas 底下敲开吗？还
是空气下动作快点也行？
剩下的如何保存，还是只能废掉？ |
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g**********0
发帖数: 886 | 4 欧美制药业业在印度设厂实验室有他们的好处： 1.输出了污染大人力成本高的SECTION
, 2.有利
于做帐，高管与股市挂钩的利益来的快。 被老印山寨是这些利好的副作用。
下面这个报道说的是老印怎么用“法律”来忽悠的：
December 1, 2000
MEDICINE MERCHANTS / Pirated Pills
Selling Cheap 'Generic' Drugs, India's
Copycats Irk Industry
By DONALD G. McNEIL Jr.
Related Articles
• Issue in Depth: Medicine
Merchants
Forum
• Join a Discussion on Prescription
Medication
OMBAY — To anyone else, the room looks like the
unprepossessing office of a college science teacher.
But to the multinational pharmace... 阅读全帖 |
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b****s
发帖数: 148 | 5 Ab is less likely to go wrong if you can have signals from other probings.
your sample prep might be the target of troubleshooting.
1) did you freeze and thaw your sample frequently? - if yes, your current
samples are no longer reliable. make aliquotes in the future, or boil
protein right after lysis.
2) must snap freeze and thaw on ice for all ampules
3) double check your lysis process and use new protein samples -
microtubules can be very hard to dissolve or remain soluble |
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f****n
发帖数: 95 | 6 我在为含氟的丙烯酸酯/丙烯酰胺类高分子寻找good solvent,发现trifluoroacetic
acid (TFA)的溶解能力特别强，很好用。可是，高分子（白色粉末）溶解于新鲜的TFA
之后溶液由无色透明慢慢变为淡黄色透明。
是不是因为TFA是强酸有所谓的发烟现象？浓盐酸就是淡黄色，因为含有少量杂质Cl2
。另外， 含卤素或含硝基的化合物容易变颜色,是少量变质导致的吗？
谢谢！
p.s.
查到有这么一句：“olutions of proteins in trifluoroacetic acid prepared in
vacuo
are clear and colourless; on exposure to air, a purple colour develops.”不
解中···
Nature 174, 509 (11 September 1954); doi:10.1038/174509a0
Anhydrous Trifluoroacetic Acid as a Solvent for Proteins
JOSEPH J. KATZ
Chemistry Di... 阅读全帖 |
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C*****0
发帖数: 50 | 8 以前护士学校学的啊！练了好久，单手握安培和针筒，另外一只手的大拇指和食指抽药！
没什么要领的！就是要多练习！Practice makes perfect! 卟知道其他姐妹有什么见解
！ |
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s**********8
发帖数: 25265 | 9 Sterilization (microbiology)
http://en.wikipedia.org/wiki/Sterilization_(microbiology)
From Wikipedia, the free encyclopediaJump to: navigation, search This
article has multiple issues. Please help improve it or discuss these issues
on the talk page.
It may need reorganization to meet Wikipedia's quality standards. Tagged
since March 2008.
It is in need of attention from an expert on the subject. WikiProject
Microbiology may be able to help recruit one. Tagged since December 2010.
Contents [hide... 阅读全帖 |
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s******e
发帖数: 364 | 10 Progesterone 8% Gel/Crinone - 15 applications $110
Progesterone in oil/Gestone 50mg - 10 ampules $110.00
你说的这个塞的是Crinone吗？ 我在网上查是＄１１０ （１５个） 跟１０支油性的针
差不多啊。 |
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