d**********r
发帖数: 24123 | 1 我操，主席！
当年听你口号买的 Advanced Medical Isotope 已经从 $1 跌到 $0.0067 了。怎么办
？有什么新股？ |
|
发帖数: 1 | 2 10日，“今日俄罗斯”（RT新闻网）援引俄罗斯国家原子能公司（Rosatom）消息报道
称，8日在俄罗斯阿尔汉格尔斯克州军营发生的液体燃料火箭发动机试验爆炸事故，已
造成5人死亡，3人重伤，伤者目前正在专门医疗机构接受治疗。
俄塔社10日报道称，与Rosatom公司此次公布的事故伤亡人数不同，事发当天（8日），
俄国防部表示，这起爆炸事故共造成2人死亡、6人受伤。
RT称，事发当天，Rosatom的工程和技术团队正为推进系统进行“同位素电源”（
isotope power source）作业。爆炸造成短时背景辐射上升（background radiation
spike），但很快恢复到正常水平。
不过，据路透社10日消息，目前有美国专家认为，上述爆炸事故或涉及核导弹。他们向
路透社指出，液体燃料不会释放辐射。
专家怀疑，本周俄罗斯北部的这次意外爆炸和辐射泄漏发生在俄罗斯的核动力巡航导弹
测试期间，由意外事故造成。
美国科学家联合会兼职高级研究员安吉·潘达（Ankit Panda）说：“液体燃料导弹发
动机爆炸不会释放辐射，我们知道俄罗斯正在研究某种巡航导弹的核推进装置。”
路透社报道截... 阅读全帖 |
|
T****r
发帖数: 22092 | 3 U.S. Flights Over Plant Gather Crucial Data
By DAVID E. SANGER and WILLIAM J. BROAD
Published: March 17, 2011
http://www.nytimes.com/2011/03/18/world/asia/18intel.html?_r=1&
WASHINGTON — The first readings from American data-collection flights o
ver the stricken Fukushima nuclear plant in Japan show that the worst of
the contamination has not spewed beyond the 18-mile range of highest co
ncern established by Japanese authorities, but there is also no indicati
on that another day of frantic effor... 阅读全帖 |
|
F*V
发帖数: 3978 | 4 Isreal wants to attack Iran before next summer:-) (link)
http://www.huffingtonpost.com/2012/09/27/benjamin-netanyahu-wor
UNITED NATIONS — In his most detailed plea to date for global action
against Iran's nuclear program, Israeli Prime Minister Benjamin Netanyahu
said Thursday the world has until next summer at the latest to stop Iran
before it can build a nuclear bomb.
Netanyahu flashed a diagram of a cartoon-like bomb before the U.N. General
Assembly showing the progress Iran has made, saying ... 阅读全帖 |
|
D*V
发帖数: 3096 | 5 【 以下文字转载自 USANews 讨论区 】
发信人: lczlcz (lcz), 信区: USANews
标 题: NJ: 毒杀亲夫的李天乐被判无期徒刑
发信站: BBS 未名空间站 (Mon Sep 30 13:29:42 2013, 美东)
Life in prison for NJ chemist who poisoned husband
September 30, 2013 - 12:36 PM
Associated Press
NEW BRUNSWICK, N.J. (AP) — A Chinese-born chemist who worked for a decade
for one of America's biggest pharmaceutical companies was a cold,
calculating murderer who poisoned her husband rather than let him divorce
her, a judge said Monday as he sentenced her to life in prison.... 阅读全帖 |
|
l****z
发帖数: 29846 | 6 August 2, 2012 by David Robertson
Every now and then, someone will try to prevent a debate about global
warming by claiming that a consensus of earth scientists supports the
existence of anthropogenic global warming. Well, that so-called “consensus
” is imaginary.
In July of 2008, The Hindu newspaper (India’s national newspaper) published
an article titled “Challenging the basis of Kyoto Protocol”.
Here is an excerpt from that article:
As western nations step up pressure on India and China ... 阅读全帖 |
|
l****z
发帖数: 29846 | 7 Life in prison for NJ chemist who poisoned husband
September 30, 2013 - 12:36 PM
Associated Press
NEW BRUNSWICK, N.J. (AP) — A Chinese-born chemist who worked for a decade
for one of America's biggest pharmaceutical companies was a cold,
calculating murderer who poisoned her husband rather than let him divorce
her, a judge said Monday as he sentenced her to life in prison.
Tianle Li won't be eligible for parole for more than 62 years for the
killing of Xiaoye Wang, a computer software engineer, ... 阅读全帖 |
|
w*********s
发帖数: 2136 | 8 Veterans Today Exclusive: What To Do About the Radioactive Poison
April 11, 2011 posted by Bob Nichols · 115 Comments
Protect Yourself and Loved Ones – Not a Drill.
(San Francisco) – What we know:
1. The daily outflow of deadly radiation from Japan’s Four Chernobyl’d
Reactors increased Ten Times on March 31.
2. The Japanese Government in conjunction with GE and the American CIA
cut off information the next day.
3. Information has resumed and is “controlled”.
4. The March 31st Radioac... 阅读全帖 |
|
B******7
发帖数: 3220 | 9 打同一种气体，分子之间的repulsion 比杂质气体更isotopically uniform, 胎更饱满
，我的打过氮气之后每次开过石子铺的路面后，很少有石子塞到轮胎缝隙中了，以前充
空气，经常附着n多石子。。。 |
|
m*****3
发帖数: 13701 | 10 这？你要是说以前轮胎秃了，现在换的新轮胎，我绝对相信
: 打同一种气体，分子之间的repulsion 比杂质气体更isotopically uniform, 胎
更饱满
: ，我的打过氮气之后每次开过石子铺的路面后，很少有石子塞到轮胎缝隙中了，
以前充
: 空气，经常附着n多石子。。。
|
|
c****e
发帖数: 2097 | 11 plutonium isotopes
path integral
perimeter institute
pissing instrument |
|
z*****8
发帖数: 1051 | 12 主要是要有新技术。地化里面传统同位素，高温高压实验，可能下坡了。但很多方向都
有新
东西的，clumped-isotope也火了好几年了，各种有机biomarker一直都还挺热的。 |
|
z*****8
发帖数: 1051 | 13 主要是要有新技术。地化里面传统同位素，高温高压实验，可能下坡了。但很多方向都
有新
东西的，clumped-isotope也火了好几年了，各种有机biomarker一直都还挺热的。 |
|
w*********s
发帖数: 2136 | 14 Veterans Today Exclusive: What To Do About the Radioactive Poison
April 11, 2011 posted by Bob Nichols · 115 Comments
Protect Yourself and Loved Ones – Not a Drill.
(San Francisco) – What we know:
1. The daily outflow of deadly radiation from Japan’s Four Chernobyl’d
Reactors increased Ten Times on March 31.
2. The Japanese Government in conjunction with GE and the American CIA
cut off information the next day.
3. Information has resumed and is “controlled”.
4. The March 31st Radioac... 阅读全帖 |
|
q******u
发帖数: 162 | 15 您好，
我对您在jobmarket区贴出的这几个有机化学相关的工作非常感兴趣。我去年从
Michigan State University的有机化学博士毕业，博士期间从事的是有机化学新方法
学的发展极其在天然产物全合成中的应用。我的研究还涉及了利用kinetic isotope
effect 进行机理研究。 我现在是哈佛化学系的一名博后，所从事的研究主要涉及金属
有机化学和nuclear medicinal chemistry。我的背景跟您所描述的工作是很好的match
,请问我怎样申请这些工作呢？ 把简历发给您吗？还是有链接可以直接申请。
非常感谢！
宏 |
|
e*********0
发帖数: 79 | 16 职位性质：全职(Full time)
工作地点：纽约长岛(Long Island, NY)
工作经验：一年以上(one year+)
学历要求：博士 (Ph.D.)
专业要求：有机化学/药物化学(Organic Chemistry/Medicinal Chemistry)
岗位指责：
1、查阅相关文献，参与合成路线的制定，同位素标记方法的确立；
2、根据项目安排，负责目标产物的合成及同位素标记，产物制备纯化；
3、选择合适的方法分析反应产物，对分析谱图进行解析；
4、科学分析实验中出现的问题，提出合理的改进建议。
任职资格：
1、有机合成、药物合成等相关专业博士，有博士后或工业界工作经验的优先；
2、熟悉有机合成理论，有较强的英文文献查找和阅读能力；
3、5年以上有机合成经验，熟练运用分析/制备HPLC，熟悉NMR谱图，并具备较强的图谱
解析能力；
4、积极上进，具备良好的团队合作精神和沟通能力；
5、优秀的英语听说读写能力。
联系人：宋女士
联系电话：631-722-1066
Email： e*********[email protected]
公司简介： 安必奇生物科技公司是一家立... 阅读全帖 |
|
g*****9
发帖数: 4125 | 17 Radon is formed as part of the normal radioactive decay chain of uranium.
Uranium has been around since the earth was formed and its most common
isotope has a very long half-life (4.5 billion years), which is the amount
of time required for one-half of uranium to break down. Radon is a decay
product of uranium, which is relatively common in the Earth's crust, but
generally concentrated in ore-bearing rocks scattered around the world.
Every square mile of surface soil, to a depth of 6 inches (2.6 |
|
T*****u
发帖数: 3257 | 18 no and never did. I am worried about isotope radiation. |
|
i*******s
发帖数: 38 | 19 【 以下文字转载自 BackHome 讨论区 】
发信人: isotopecs (isotope), 信区: BackHome
标 题: 红外监控系统能否带回国？
发信站: BBS 未名空间站 (Mon May 4 11:44:01 2015, 美东)
国内小区晚上停车，经常有人划车、砸车搞破坏，想在美国买一套高清的红外监控系统
，下次回国带回去。
问题是这种家用的红外成像技术，美国是不是禁止带到其它国家的，有没有了解这方面
情况的？
不要出关时被什么人给得住告我。。。 |
|
a**********9
发帖数: 348 | 20 Thallium has many radioactive isotopes, but the commonly used thallium is
not radioactive.
It kills cells because it's a heavy metal. |
|
S***h
发帖数: 173 | 21 医生的报告里的一段话：
Exercise Stress Myocardial Perfusion Imaging With Single Isotope SPECT:
Protocol: The patient had myocardial perfusion imaging performed using a
same day protocol, with injection of 9 mci of TC-99m Sestamibi at rest, and
the injection of 30 mci of TC-99M Sestamibi at stress. Imaging was
performed by gated SPECT techniques.
Finding: No artifact is seen. Moderate anterior, inferior and inferolateral
reversible ischemia. Transient ischemic dilatation is absent. LVEF is
calculated at 57 |
|
S***h
发帖数: 173 | 22 GQ， 你熟悉这个跑步测试么？ ---Exercise Stress Myocardial Perfusion Imaging
With Single Isotope SPECT
准确性怎么样？ |
|
P*****n
发帖数: 127 | 23 3H确实比较弱，很多人都不做防护。不过到底怀孕了，还是尽量不要碰。可以用颜色标记代替isotope吗？ |
|
h*******a
发帖数: 573 | 24 I don't understand why some people keep spreading false info to scare
parents. Here's what I found in the official site of Department of Nuclear
Engineering at UC Berkeley:
"4/13/2011: one would have to consume at least 1,900 liters of milk to
receive the same radiation dose as a cross-country airplane trip."
"4/28 (2:35pm): Milk samples have been updated with a raw milk sample from
April 20th. We observed a decrease in the levels of all fission product
isotopes. Similar to the recent water resu... 阅读全帖 |
|
x******h
发帖数: 19 | 25 As long as you do the protection, it should be fine. Every radioactive
source should be shielded. You can also claim you are pregnant, so they
should monitor your exposure every week to make sure your exposure is under
10% of normal people.
Anyway, take it easy.
BTW, if you are doing CT, it should definitely be fine. If you are doing PET
and getting exposed to the source, I would talk to the advisor about not
touching the isotopes during pregnancy. |
|
j*******k
发帖数: 187 | 26 在读研究生，怀孕两个多月了，最近老板有打算让我做一些western blot的东西，想请
教下有类似经验的宝妈们，知道跑胶的一些东西比较有毒，但是不是只要带口罩和双层
gloves就好了，还是最好都不要做呢？还有每周都要用到一次radioactive 的isotope,
hydrogen -3 [tritium].每周剂量大概0.2 mCi左右，不知道这个可以接触吗？ 在公
司里面做的实验，看其他怀孕的女生都没有特别忌讳的，照样做，但总有点不放心，所
以上来请教下。谢 了！ |
|
C*******7
发帖数: 35 | 27 My friend did Western Blot and her baby is fine. But I am not sure about
radioactive isotope. |
|
h*******l
发帖数: 306 | 28 我就是因为担心放射性，才没工作的。有妈妈跟我说没事，她俩宝都好的很。可是我就
是心里个应，万一有事，那不得后悔死
isotope,
★ 发自iPhone App: ChineseWeb 7.8 |
|
H*******r
发帖数: 3143 | 29 western里面用到的巯基乙醇，甲醇，还有ECL, ACRYLAMIDE这几样东西比较有害，不过
口罩和gloves应该就够了，H3和S35理论上应该都没事，穿透力很弱，我依稀记得好像
就算是p32之类比较强的，孕期不超过100uCi也是没事的(单位记不太清楚了。。。。)
，但是还是小心的好，能不做就不要做
isotope, |
|
w*********s
发帖数: 2136 | 30 Veterans Today Exclusive: What To Do About the Radioactive Poison
April 11, 2011 posted by Bob Nichols · 115 Comments
Protect Yourself and Loved Ones – Not a Drill.
(San Francisco) – What we know:
1. The daily outflow of deadly radiation from Japan’s Four Chernobyl’d
Reactors increased Ten Times on March 31.
2. The Japanese Government in conjunction with GE and the American CIA
cut off information the next day.
3. Information has resumed and is “controlled”.
4. The March 31st Radioac... 阅读全帖 |
|
m**********n
发帖数: 12 | 31 那是不是i797c寄丢了，打电话问问看，我记得之前有个帖子就是一直没收到然后打电
话要来了那个查询号码
[在 isotopecs (isotope) 的大作中提到：]
：我9月6号DOS发出FR的，到现在还没有USCIS的任何消息呢 |
|
m**********n
发帖数: 12 | 32 那是不是i797c寄丢了，打电话问问看，我记得之前有个帖子就是一直没收到然后打电
话要来了那个查询号码
[在 isotopecs (isotope) 的大作中提到：]
：我9月6号DOS发出FR的，到现在还没有USCIS的任何消息呢 |
|
g********4
发帖数: 4959 | 33 发信人: minwen (minwen), 信区: Military
标 题: 完蛋了，加拿大的核电站也出问题，2012真的来了
发信站: BBS 未名空间站 (Wed Mar 16 18:32:26 2011, 美东)
完蛋了，加拿大的核电站也出问题，2012真的来了，估计一个星期后美国也要糟，大家
逃命去吧。
Ontario Power Generation: Unplanned Water Release Not A Threat
DOW JONES NEWSWIRES
Ontario Power Generation Inc. (OPG.YY) said its nuclear power station in
Pickering, Ont. unintentionally released water into the environment on
Tuesday due to the failure of a pump seal.
In a statement posted on its website, the big electric utility, which i... 阅读全帖 |
|
w*********s
发帖数: 2136 | 34 Veterans Today Exclusive: What To Do About the Radioactive Poison
April 11, 2011 posted by Bob Nichols · 115 Comments
Protect Yourself and Loved Ones – Not a Drill.
(San Francisco) – What we know:
1. The daily outflow of deadly radiation from Japan’s Four Chernobyl’d
Reactors increased Ten Times on March 31.
2. The Japanese Government in conjunction with GE and the American CIA
cut off information the next day.
3. Information has resumed and is “controlled”.
4. The March 31st Radioac... 阅读全帖 |
|
|
c**i
发帖数: 6973 | 36 What angers certain Taiwanese, especially DPP, is the nuclear waste. There
is no place to dispose of them. Taiwan is small, unlike US which has Nevada
and China (I don't know where).
Taiwan buys isotoes from US. The contract is US owns it, even if used. So
Taiwan has to dispose the isotopes according to US.
A few years ago North Korea wanted to take over the waste but US apparently
said no, concerned N Korea would make atomic bombs out of that. Then Russia
made a similar proposal. I don't know w |
|
T*********e
发帖数: 39815 | 37 不懂，等专家来科普
看wiki上这么写：
Potassium iodide was approved in 1982 by the US FDA to protect the thyroid g
lands from radioactive iodine from accidents or fission emergencies. In the
event of an accident or attack at a nuclear power plant, or fallout from a n
uclear bomb, volatile fission product radionuclides may be released, of whic
h 131I is one of the most common by-products and a particularly dangerous on
e due to thyroid gland concentration of it, which may lead to thyroid cancer
. By saturating th... 阅读全帖 |
|
y***t
发帖数: 542 | 38 http://www.nuc.berkeley.edu/UCBAirSampling
3/21 (12:35pm): Rain water sampling results for precipitation from 3/19 10:
15am to 9:45pm is posted. Slight increase in activities are noted which may
be due to many reasons from actual increase from Japan to differing
atmospheric chemistry effects. Activity levels remain extremely low and
exposure to the public is insignificant.
3/20 (4:15pm): Rain water results show trace levels of radioactive iodine (
I131,I132), cesium (Cs134, Cs137), and tellurium... 阅读全帖 |
|
d*b
发帖数: 21830 | 39 搞笑，tritium是常见的isotope里面最危险的玩意了，internal dosimetry复杂，防护
极其复杂，带2层latex手套接触tritium，体内就能探测到残留。
跟重要的是，tritium decay energy太低，一般的geiger counter没用，需要闪烁计数
器才能用，而且一旦tritium进入体内，20年后都测得到残留。
。 |
|
M*****5
发帖数: 3990 | 40 see what FDA says...
How will the radiation affect fish and seafood that have not yet been fished
or harvested?
The great quantity of water in the Pacific Ocean rapidly and effectively
dilutes radioactive material, so fish and seafood are likely to be
unaffected. However, FDA is taking all steps to evaluate and measure any
contamination in fish presented for import into the US.
Steam with radionuclide contamination disperses in the air and deposits on
water/ground surface. Over how wide an area ... 阅读全帖 |
|
H**********y
发帖数: 7928 | 41 大上周去日本超市，看到生鱼片明显没人买了，都降价了。
我。。。。。。也没敢买 ：（
see what FDA says...
How will the radiation affect fish and seafood that have not yet been fished
or harvested?
The great quantity of water in the Pacific Ocean rapidly and effectively
dilutes radioactive material, so fish and seafood are likely to be
unaffected. However, FDA is taking all steps to evaluate and measure any
contamination in fish presented for import into the US.
Steam with radionuclide contamination disperses in the air and deposits on
w... 阅读全帖 |
|
s*********y
发帖数: 1085 | 42 后面的内容过于personal，就不放上来了。不过结尾总还是要的，贴上大学经常听得一
首歌吧。
很喜欢，附上歌词
Do I have to change my name
Will it get me far
Should I lose some weight
Am I gonna be a star
I tried to be a boy
I tried to be a girl
I tried to be a mess
I tried to be the best
I guess I did it wrong
That′s why I wrote this song
This type of modern life
Is it for me
This type of modern life
Is it for free
So I went into a bar
Looking for sympathy
A little company
I tried to find a friend
It′s more easily said
It′s always been the same
Th... 阅读全帖 |
|
p*****a
发帖数: 1152 | 43 http://www.drugs.com/monograph/potassium-iodide.html
"Blockage of thyroidal uptake of radioactive isotopes of iodine (e.g.,I131)
that may be accidentally released into the environment (e.g., from a nuclear
power plant), thus minimizing the risk of radiation-induced thyroid
neoplasms. Has no impact on uptake of
other radioactive materials and does not provide protection against external
irradiation of any kind." |
|
c******n
发帖数: 16403 | 44 http://latimesblogs.latimes.com/nationnow/2011/08/radioactive-i
ed.html
Very small amounts of a radioactive isotope of sulfur, believed to have trav
eled across the Pacific Ocean from the Fukushima nuclear plant in Japan, hav
e been detected in La Jolla, Calif., by UC San Diego scientists.
But there's no need to worry: The amounts are nowhere near enough to cause h
ealth problems, researchers said.
Senior author Mark Thiemens and his team keep tabs on levels of sulfur-35 as
part of their climate... 阅读全帖 |
|
p*r
发帖数: 548 | 45 summary：
Iodine-131 0.165 mBq/m3
Iodine-132 0.03 mBq/m3
Tellurium-132 0.04 mBq/m3
Cesium-137 0.002 mBq/m3
Today, one of the monitoring stations in Sacramento, California that feeds
into the IMS detected miniscule quantities of iodine isotopes and other
radioactive particles that pose no health concern at the detected levels.
Collectively, these levels amount to a level of approximately 0.0002
disintegrations per second per cubic meter of air (0.2 mBq/m3).
Specifically, the level of Iodine-131 ... 阅读全帖 |
|
g*s
发帖数: 2277 | 46 3/19 (10:34am): Rain fall from 3/17-2pm to 3/18-12:15pm. Preliminary results
show trace amounts of radioactive iodine (I131, I132), cesium (Cs137, Cs134)
,
and tellurium (Te132) which are not naturally occurring elements and are
assumed to originate from the Fukushima nuclear site. In context, we also
see
Be-7 (cosmogenically produced) and Pb-212 (radon daughter) which are
naturally
occurring isotopes that also show up normally in rain water. Preliminary
analysis show levels remain well below th... 阅读全帖 |
|
g**t
发帖数: 1872 | 47 不止这些，但你在Berkeley用那些detector count一晚左右就能看见这两个isotopes。 |
|
l*****O
发帖数: 402 | 48 I think we are worried about I129 which is a product of nuclear fission.
Plus it is highly biophilic, and occurs in multiple ionic forms which have
different chemical behaviors. This makes it fairly easy for I129 to enter
the biosphere as it becomes incorporated into vegetation, soil, milk, animal
tissue, etc.
So I am confused with what 石九公 said. If we need to avoid milk
contaminated with isotopes of iodine (majorly we are avoiding milk
contaminated with I129, not milk contaminated with I131), t... 阅读全帖 |
|
z**h
发帖数: 382 | 49 这玩意在医院里用来给Gamma源校正用，搞不好泄漏出来的事故也是有的。
From Wiki
Caesium-137 reacts with water producing a water-soluble compound (caesium
hydroxide), and the biological behavior of caesium is similar to that of
potassium and rubidium. After entering the body, caesium gets more or less
uniformly distributed throughout the body, with higher concentration in
muscle tissues and lower in bones. The biological half-life of caesium is
rather short at about 70 days.[7] Experiments with dogs showed that a single
dose of 3... 阅读全帖 |
|
|
