b********t
发帖数: 992 | 1
u need to do it yourself,just to collect the solvent from the
column and then inject it again.
the Mn is too low,maybe u need to find some weak slovent which wont dissolve
your sample at room temperature, hopefully, when heating a little bit, it will
dissolve the 600
carry
量
在
一
不 |
|
F***F
发帖数: 7 | 2 This is a purification process. Coz NIPAAM monomers are well
dissolved in Hexane/acetone (I can not remember the volume ratio).
Then place it into refrigerator at 4 degree C for one night. Needle like
NIPAAM crystall can precipite at the bottom. The impurity still dissolve
in the solvent. You can use extraction method to separate crystal like NIPAA
M.
After that, you should use hexane to wash impurities out from NIPAAM, Coz tr
ace of impurity
absorb on the crystalls.
This is a general purificati |
|
t******l
发帖数: 3060 | 3 how you try the reaction?
that reaction should be easy.
is ur polymer dissolve in solvent?
since ur -OH group is not that steric hindered. the general mathod can be.
dissolve in Solvent like Acetonnitrile, add K2CO3, add such as 1-bromoHexane.
refluxing for 24h. that's it.
for more rigorous condition. u can use stronger base, like KtBuO. refluxing in
higher temp. |
|
w********h
发帖数: 12367 | 4 PIP still too long to be dissolved together with PVA?
Or are u sure that's PVA?
segment
dissolved. |
|
l*****l
发帖数: 85 | 5 Thank both lenovodos and tj403 for the kind replies.
The problem actually is that both oleic acid-capped PbS and butylamine
exchanged PbS form small aggregates in octane. I expected those QDs can
completely dissolve in octance. But it did not happen. The films I got were
continous but with many tiny domains of aggregates.
I did everything from washing to exchange to spin coat in air. But with OA
the capping reagent, the QDs shoudl be readily dissolve/disperse in a
nonpolar solvent even PbO forms |
|
s**********i
发帖数: 711 | 6 hmm... as KBr dissolvs, [Br] increases... then
[Br][Li] > ksp and LiBr precipitates... then
[Br] decreases, then more KBr dissolves... then
more LiBr precipitates... faint... |
|
y*****l
发帖数: 5997 | 7 ☆─────────────────────────────────────☆
tanmaomao (坛猫猫) 于 (Tue Nov 16 18:13:00 2010, 美东) 提到:
RT
☆─────────────────────────────────────☆
tanmaomao (坛猫猫) 于 (Tue Nov 16 18:24:25 2010, 美东) 提到:
发信人: tanmaomao (坛猫猫), 信区: Stock
标 题: Re: 铀价格走势图 (转载)
发信站: BBS 未名空间站 (Tue Nov 16 18:23:29 2010, 美东)
Ux U3O8 Price indicator is the longest-running weekly uranium price series,
used by the industry in sales contracts
☆─────────────────────────────────────☆
tanmaomao (坛猫猫) 于 (Wed Nov 17 09:34:37 20... 阅读全帖 |
|
v**********m
发帖数: 5516 | 8 Nuclear Power Has a Bright Future: Amir Adnani
The Energy Report | Jun. 5, 2012, 4:00 AM | 0 |
inShare
A A A
The Energy Report
URL
The Energy Report is a free newsletter featuring investment coverage on
fossil, renewable and alternative energies
Recent Posts
Biggest Value for Agricultural Investors Revealed: Steve Hansen
Biggest Value for Agricultural Investors Revealed: Steve Hansen
Canadian Oil Explorers Pump Profits Abroad: Frederick Kozak
RSS Feed
The Energy... 阅读全帖 |
|
G******f
发帖数: 16223 | 9 vanityfair says:
What caused the sinkhole?
Sinkholes often appear in areas where the rock below the ground is limestone
, carbonate rock, salt beds, or rocks that can be naturally dissolved by
circulating ground water. As the sediment dissolves, caves and air pockets
develop underneath the land surface. If there is not enough support for the
land above the spaces, then the ground collapses and results in a sinkhole.
Natural depressions that collect water and man-made structures such as
houses an |
|
h*h
发帖数: 27852 | 10 如果现在是冰河期的话，地球能支持多少人？
30亿？40亿死掉？
20亿？50亿死掉？
Next Ice Age Delayed by Global Warming, Study SaysChristine Dell'Amore
National Geographic News
September 3, 2009
Humans are putting the brakes on the next ice age, according to the most
extensive study to date on Arctic climate change.
The Arctic may be warmer than it's been in the past 2,000 years—a trend
that is reversing a natural cooling cycle dictated by a wobble in Earth's
axis.
Previously, researchers had looked at Arctic temperature data that w... 阅读全帖 |
|
c***s
发帖数: 70028 | 11 根据采访双方律师，姜昆现在是否涉入该桩诈骗案尚存诸多疑点，不过可以明确的是，原被告双方的正式交锋一定不会在22日的发布会上出现。
促进会宣传册
近日，著名相声演员姜昆在美国卷入了一场涉嫌诈骗的诉讼案中。对方是一家名叫富豪集团的企业，9月29日，这家位于洛杉矶的华人公司遭到了查封。据悉，该公司被指利用一种名为“珍宝币”的虚拟货币，以传销方式欺骗投资者，不仅姜昆的照片成为他们宣传“珍宝币”的材料，就连姜昆本人也被传是“珍宝币” 控股公司的发起人。
目前，“珍宝币”投资诈骗案的受害人，已于2015年10月5日向加州高等法院提起集体诉讼，姜昆是被告之一。加州法院已经受理，法院日程定于2016年1月27日下午2点半进行首次开庭。
姜昆为什么会成为被告？姜昆在该事件中是否应该担责？腾讯娱乐独家联系了本案远在美国的原告律师刘龙珠和被告姜昆的律师赵联，就该事件的焦点问题展开了调查。
姜昆是“珍宝币”公司的发起者吗？
----被告律师：从未以任何方式加入该公司
原告律师：最关键的证据是宣传手册
据媒体普遍报道，因发布“珍宝币”而被查封的富豪集团是由中美政治协商促进会控股。而据促进会宣传手册内容显示，姜昆... 阅读全帖 |
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i***s
发帖数: 39120 | 12 北京时间5月26日消息，据国外媒体报道，上个月Vox的编辑利用爬虫抓取了影评网站Metacritic的数据，统计了所有好莱坞“知名演员”的作品在Metacritic网站上的评分，最终评出“演技派”和“烂片王”。
怎样的演员才称得上是“知名演员”呢？Vox的编辑们设置了三个限定条件：
这位演员必须出演超过10部电影，由他担任导演、制片、编剧的作品并不纳入统计范围。
这位演员必须有一部票房超过3000万美元的作品。
近五年内这位演员必须有一部以上的作品问世。（只统计还在演戏的活跃演员）
筛选出这些演员之后，Vox的编辑统计出演员每一部作品在Metacritic网站上的评分，最终得出一个平均分。
Metacritic对于影片的评分很直白，0-39分是差评，40-60分是中评，61-100分是差评。综合所有纳入统计范围的演员，54分是一条及格线。
值得一提的是，Metacritic的评分都来自于业界知名的一些专业影评人，很多时候或许与公众的看法相左。此外2000年以前的“老电影”在Metacritic上的评分也有局限性，参考性有限。
前提条件已经设置好，下面就来揭晓一下众多影评人眼中的好莱坞“... 阅读全帖 |
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g********n
发帖数: 4809 | 13 When he had finished his conquests, however, the Triumvirate had dissolved.
Crassus had died in a war against the Parrhians in the Middle East, and
Pompey had turned against Julius and had roused the Senate against him. The
Senate declared Julius an enemy of the state and demanded that he hand over
his generalship and province.
http://www.wsu.edu/~dee/ROME/JULIUS.HTM
现在你终于可以shut up了吧？ |
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r*****d
发帖数: 1924 | 14 看来马可波罗把ice cream从中国传到意大利一事是个传说，没有正史记载
Ice Cream History and Folklore
Most of the following material has been extracted from "The History of Ice C
ream", written by the International Association of Ice Cream Manufacturers (
IAICM), Washington DC, 1978. As you will note below, however, much of the ea
rly history of ice cream remains unproven folklore.
Once upon a time, hundreds of years ago, Charles I of England hosted a sumpt
ous state banquet for many of his friends and family. The meal, consist... 阅读全帖 |
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h*h
发帖数: 27852 | 15 【 以下文字转载自 ChinaNews 讨论区 】
发信人: hsh (三胡), 信区: ChinaNews
标 题: 气温变暖也许是好事？
发信站: BBS 未名空间站 (Wed Nov 9 14:33:32 2011, 美东)
如果现在是冰河期的话，地球能支持多少人？
30亿？40亿死掉？
20亿？50亿死掉？
Next Ice Age Delayed by Global Warming, Study SaysChristine Dell'Amore
National Geographic News
September 3, 2009
Humans are putting the brakes on the next ice age, according to the most
extensive study to date on Arctic climate change.
The Arctic may be warmer than it's been in the past 2,000 years—a trend
that is reversing a natural co... 阅读全帖 |
|
m***n
发帖数: 12188 | 16 关于公元前1000年的地中海世界，拷贝一段 “The classical world: an epic
history from Homer to Hadrian” Robin Lane Fox：
荷马史诗的背景时代是属于 Pre-literate societies（前文字，也就是没有文字的社
会）, 比如前伊斯兰时代的阿拉伯，阿富汗东北的Nuristan，等。
荷马史诗的语言为东希腊方言，位于小亚细亚西部。诗人及其听众是属于今天的土耳其
地区的，也包括西面沿海的岛屿。有传说认为他是Smyrna（今天土耳其Izmir）人，也
有人认为Chios岛是荷马的家乡，因为在奥德塞中有详细描述。
荷马史诗的故事时代背景可能是 1050-850 BC，这段时间是一个黑暗时代，因为大规模
入侵，文字消失，新的文字，希腊字母文字，尚未产生。荷马的时代大约是 800到730
BC，前面一段战乱时期的传说被吟游诗人传颂下来。荷马明显早于Hesiod。前8世纪，
希腊字母出现了，并且开始在希腊世界传播。其时代精神是 heroic aristocracy。一
个英雄时代开幕了。
在荷马史诗中，最主要建筑是英... 阅读全帖 |
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B********d
发帖数: 1893 | 17 我不知道没有订阅如何读完全文，但是，读者来信似乎很有意思。
这位说很多西方人伪造根本不存在的西方学历，在中国得到大学或者研究所的外教等工
作机会。 那个人号称毕业于新西兰大学，这所大学 50 年前就不存在了，而且他的毕
业证书都是照片伪造，只用了 20 分钟就制作成功。
然后他得到一个在乐山核技术研究所的职位。这个人如果是个间谍怎么办 ？
3 days ago
Tim Harrell wrote:
I stayed in China for six months during 2005 and whilst staying at a hostel
in Chengdu, I witnessed a guy from New Zealand concoct a fake degree
certificate claiming that he was a graduate of a university in New Zealand
that didn't even exist (The University of New Zealand - which dissolved 50
ye |
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c*****a
发帖数: 1238 | 18 Bt protein: Cry1Ab, one of Cry proteins.
The midgut of these insects is alkaline, which allows for the activation of
the Cry proteins once the proteins are ingested.
The Cry proteins are then “dissolved into protoxins, which are cleaved by
proteases into active toxins".
The activated proteins then bind to cells in the insect’s midgut and form
pores in the cells’ outer membranes.
This leads to the swelling and destruction of midgut cells . The digestive
systems of the insects are then paralyzed |
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p*********g
发帖数: 9527 | 19 是老将自卑，搞清楚因果。老将认为中国不如美国。
还有，发帖前先研究一下你美国爹的心思，别丢人：
发信人: tgbyhn (CNN), 信区: Military
标 题: 华盛顿邮报上今天有篇比较印度中国文章
发信站: BBS 未名空间站 (Sun Oct 3 18:49:16 2010, 美东)
India wants to be a great power. So why are its Commonwealth Games such a
mess?
Network NewsX Profile
By Jason Overdorf
Sunday, October 3, 2010
NEW DELHI -- The Commonwealth Games, which begin here Sunday, were supposed
to showcase New Delhi's emergence as a world-class city and India's ascent
to major-power status. In a sort of Olympics-lite for ... 阅读全帖 |
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t****n
发帖数: 2601 | 20 India wants to be a great power. So why are its Commonwealth Games such a
mess?
Network NewsX Profile
By Jason Overdorf
Sunday, October 3, 2010
NEW DELHI -- The Commonwealth Games, which begin here Sunday, were supposed
to showcase New Delhi's emergence as a world-class city and India's ascent
to major-power status. In a sort of Olympics-lite for the erstwhile British
Empire, thousands of elite athletes from 71 nations and territories are to
compete in everything from boxing to lawn bowling. But... 阅读全帖 |
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P*****l
发帖数: 438 | 21 WASHINGTON—A yearlong investigation by a Senate panel has found evidence
that the mostly Afghan force of private security guards the U.S. military
depends on to protect supply convoys and bases in Afghanistan is rife with
criminals, drug users and insurgents.
Reuters
U.S. soldiers search Afghan men working for a private security firm
escorting truck convoys, after they found illegal weapons in their vehicle,
in a village near Kandahar.
The Senate Armed Services Committee inquiry, based on interv... 阅读全帖 |
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s**********1
发帖数: 116 | 22 Philipines was not USA colony. please study history.
American period (1898–1946)
Main article: History of the Philippines (1898-1946)
1898 political cartoon showing U.S. President McKinley with a native child.
Here, returning the Philippines to Spain is compared to throwing the child
off a cliff.
Filipinos initially saw their relationship with the United States as that of
two nations joined in a common struggle against Spain.[84] However, the
United States later distanced itself from the interes... 阅读全帖 |
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t*****k
发帖数: 2547 | 23 On Friday, the G-20 meeting in Seoul - the summit bringing together the
world's 20 most important economies - concluded. The gathering, the fifth
since former President George Bush revived the grouping in 2008, was the
place where the world was supposed to come together to rebalance the
teetering global economy.
Instead of doing so, presidents and prime ministers deferred solutions to
the most intractable problems to the indefinite future. Worse, they did so
when global commerce is especially vu... 阅读全帖 |
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w**********9
发帖数: 242 | 24 The USA, Japan and South give the north korean a surgery to dismentle its
potential to make nuclear weapon.
I belive the north has no ball to make a real war. But, the possibility to
bombard the south's capital may happen. |
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L***n
发帖数: 6727 | 25 i doubt South Korean has the ball to do that |
|
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w**********9
发帖数: 242 | 27 I think the North will do that and send missles to Japan too.
But, the surgical attacks should maximally diminish its capacity to do it.
Without China's agreement, there is no way to have the regimen changed.So
the USA has very limited to do. |
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L***n
发帖数: 6727 | 28 What for? Diminishing North's nuclear capacity in trade of destroying
Soul? You think it's a good deal? I don't think the South would agree |
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w**********9
发帖数: 242 | 29 well, considering the north being an unpredicatable, crazy and hatred-filled
regimen. It could be worse if it owns nukes. |
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L***n
发帖数: 6727 | 30 Tell them to the South Korean, I would really be suprised if this theory
is sold.
filled |
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b*********d
发帖数: 3539 | 31 恩，md打拉客之前可劲儿鼓噪说他们有大杀气，然后大举进攻，那是他明确知道拉克没
有大杀气。
现在md知道北棒有货，又想除掉，吃了雄心豹子胆他敢在打击之前敲锣打鼓。这样迅雷
盗铃之势胡乱找个机会俏没声地一下把北棒蛋蛋给切了，倒是最稳妥的做法。 |
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w**********9
发帖数: 242 | 32 boy, you don't need to sell. You work with the south to do it for their
benefit, especially in a high stake like this.
If the north dares to attack the fleet in yellow sea, the usa, japan the
south will do their parts accordingly. |
|
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e**s
发帖数: 4638 | 34 北棒子直接用火炮把汉城打回石器时代 。。。。。lol |
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w**********9
发帖数: 242 | 35 kao, "regime" not "regimen", my mistake. |
|
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G*******1
发帖数: 6411 | 37 http://www.foreignpolicy.com/articles/2011/01/02/think_again_american_decline?page=0,0
Think Again: American Decline
This time it's for real.
BY GIDEON RACHMAN | JANUARY/FEBRUARY 2011
"We've Heard All This About American Decline Before."
This time it's different. It's certainly true that America has been through
cycles of declinism in the past. Campaigning for the presidency in 1960,
John F. Kennedy complained, "American strength relative to that of the
Soviet Union has been slipping, and commun... 阅读全帖 |
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j****n
发帖数: 7636 | 38 Geithner said the plan to dissolve Fannie and Freddie would proceed "very
carefully," and promised that the companies would have the cash they need to
meet their existing obligations.
three
borrowers.
its
report |
|
i***z
发帖数: 7508 | 39 Baher Ibrahim, in Alexandria, tells the BBC that it feels like a dream: "
This is one of the greatest days of my life. I am proud to have participated
in this revolution from the start. I am now definitely proud to be an
Egyptian, and I am sure better days are to come for Egypt. I hope that the
army will dissolve the current government and just have a temporary role to
restore order and stability until there are elections. I just have one
request: Please do not say 'former President Mubarak'. Sa... 阅读全帖 |
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w*********g
发帖数: 30882 | 40 平井宪夫揭示日本核电业惊天内幕——素人造核电，豆腐渣工程
作者：蜀中行 更新时间：2011-3-16
设施配管1级技士平井宪夫(1997年1月因癌症逝世)生前的最后吶喊。
/来自中华网社区 club.china.com/
/来自中华网社区 club.china.com/
关于平井宪夫：
1997年1月逝世。设施配管1级技士，核电事故调查国民会议顾问，核电劳工救济中
心代表，北陆电力志贺核电厂停止诉讼原告特别辅佐人，东北电力女川核电停止诉讼原
告特别辅佐人，福岛二号核电厂三号机运转停止诉讼原告证人。「核电劳工救济中心代
表」在他仙逝后，因后继无人关闭
"我不是反核运动家。这20年来，我一直在核电厂工作。社会上有听不完的拥核反
核理论，但我只想在这里告诉大家：「所谓的核电厂是这样一回事。」大部份的人都不
知道核电内部的实际情形。希望大家有耐心把这篇文章读完。所谓核电，跟各位所想的
或许有点出入。在那里，每天都有遭受放射线污染的工人，以及严重的岐视产生。
我的专长，是负责大型化学工场的内部配管施工与维修。快30岁时，日本掀起了一
阵核电建设的... 阅读全帖 |
|
x****u
发帖数: 12955 | 41 Wait until your sewer pipe gets plugged up, then you'll find out.
Normal toilet paper dissolve at much faster rate than tissue paper. |
|
s********n
发帖数: 26222 | 42 世界的局势很可能正向这个方向前进，而internet以及globalization就是其中的强力
催化剂 |
|
D********r
发帖数: 3238 | 43 如果真这样也不是坏事
关键是成不了这样
全球都享受米国人民的福利和待遇,那是人类的大进步. |
|
k*****r
发帖数: 21039 | 44 赞这个判断，是这么回事儿。 最好都是人口不超过200万的小城帮，容易控制。 |
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s********n
发帖数: 26222 | 45 只怕是中国人做奴隶， 美国人享福， 贫富悬殊， 到时候不是国家差别，而算地区差
别。 |
|
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s********n
发帖数: 26222 | 47 你以为全球政府就是全球公平的政府，哈哈， 不过是米犹利益最大化，吸血最大化而
已， 跟普通人的福祉没啥关系 |
|
|
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D********r
发帖数: 3238 | 50 差别大了
如果是全球政府,就要考虑全球的发展
如果是一个国家统制全球,他首先考虑的是如何保障自己国家的统制权. |
|
