m*****a
发帖数: 92 | 1 Japan Nuclear Crisis: What Is a Full Meltdown?
Tuesday March 15, 2011 2:50 PM - Leave a Comment
Japan is on the brink of a nuclear disaster in the wake of its
devastating earthquake and tsunami, with a third explosion at the
Fukushima Daiichi nuclear power station damaging the steel containment
structure of one reactor, and a fire at another spewing radioactive
material into the air. Before the latest explosion and fire, as workers
raced to stay ahead of a full meltdown, The Daily Beast spoke wi... 阅读全帖 |
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w*p
发帖数: 16484 | 2 In Japan plant, frantic efforts to avoid meltdown
Police officers wearing gas masks patrol in the area of the Fukushima power
plant's Unit 1 in Okumamachi, Fukushima Prefecture (state), northern Japan
AP – Police officers wearing gas masks patrol in the area of the Fukushima
power plant's Unit 1 in Okumamachi, …
* Ring of Fire Play Video Earthquakes Video:Ring of Fire ABC News
* Greg Palkot Live In Japan Play Video Earthquakes Video:Greg Palkot
Live In Japan FOX News
* Withstanding q... 阅读全帖 |
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l**a
发帖数: 6415 | 3 删掉一些了。
链接如下
plainenglishnuclear.blogspot.com
.......
1. I live on the West Coast. Am I in danger?
No. Absolutely not.
You won’t even notice except that everyone will keep talking about it for
ages, and it’ll take us even longer to get off coal and oil and natural gas
because people will be afraid of nuclear power again. Go outside, get some
sunshine (or rain, depending), be grateful for the fact that your city isn
’t completely destroyed in an earthquake or a tsunami, hug your loved ones... 阅读全帖 |
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f**********g
发帖数: 2252 | 4 UP.
The Long Case for Avalon Rare Metals
2 comments | by: Michael Filloon February 08, 2011 |
about: ARAFF.PK / AVL / MCP / QSURD.PK / REE
Rare Earth Elements or REEs seem to be the newest big mover on Wall Street.
Although most have heard of them, they do not know what their use is. The
best way to identify them is by going back to chemistry class and looking at
a periodic table. Here is an easier introduction.
Avalon Rare Metals Inc. (AVL) has seen a large appreciation of market cap
ove... 阅读全帖 |
|
f**********g
发帖数: 2252 | 5 UP.
The Long Case for Avalon Rare Metals
2 comments | by: Michael Filloon February 08, 2011 |
about: ARAFF.PK / AVL / MCP / QSURD.PK / REE
Rare Earth Elements or REEs seem to be the newest big mover on Wall Street.
Although most have heard of them, they do not know what their use is. The
best way to identify them is by going back to chemistry class and looking at
a periodic table. Here is an easier introduction.
Avalon Rare Metals Inc. (AVL) has seen a large appreciation of market cap
ove... 阅读全帖 |
|
f**********g
发帖数: 2252 | 6 UP in pre-market.
The Long Case for Avalon Rare Metals
2 comments | by: Michael Filloon February 08, 2011 |
about: ARAFF.PK / AVL / MCP / QSURD.PK / REE
Rare Earth Elements or REEs seem to be the newest big mover on Wall Street.
Although most have heard of them, they do not know what their use is. The
best way to identify them is by going back to chemistry class and looking at
a periodic table. Here is an easier introduction.
Avalon Rare Metals Inc. (AVL) has seen a large appreciation of ... 阅读全帖 |
|
f**********g
发帖数: 2252 | 7 UP in pre-market.
The Long Case for Avalon Rare Metals
2 comments | by: Michael Filloon February 08, 2011 |
about: ARAFF.PK / AVL / MCP / QSURD.PK / REE
Rare Earth Elements or REEs seem to be the newest big mover on Wall Street.
Although most have heard of them, they do not know what their use is. The
best way to identify them is by going back to chemistry class and looking at
a periodic table. Here is an easier introduction.
Avalon Rare Metals Inc. (AVL) has seen a large appreciation of ... 阅读全帖 |
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i***a
发帖数: 195 | 8 你也是个瞎嚷嚷的主，你看看这个吧：
Former U.S. Nuclear Regulatory Commission (NRC) member Peter Bradford added,
"The other thing that happens is that the cladding, which is just the
outside of the tube, at a high enough temperature interacts with the water.
It's essentially a high-speed rusting, where the zirconium becomes zirconium
oxide and the hydrogen is set free. And hydrogen at the right concentration
in an atmosphere is either flammable or explosive."
你比NRC的人还厉害?别扯淡了！
http://www.scientificamerican.com/art... 阅读全帖 |
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T****r
发帖数: 22092 | 9 赶快拉倒吧。
你要是看三天前日本的新闻，还屁事没有呢。
你连zirconium和Zn是怎么回事都不知道，也就只能看看这种事前新闻了。
added,
.
zirconium
concentration |
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p***r
发帖数: 20570 | 10 You made my day. Zirconium is not Zinc.....
added,
.
zirconium
concentration |
|
c**i
发帖数: 6973 | 11 Patti Waldmeir, Royal replicas feed Beijing’s vision; Royal wedding
replicas tell an important story about how China is haltingly moving away
from a sweatshop past towards a more upmarket future. Financial Times, Dec.
10, 2010.
http://www.ft.com/cms/s/0/ea670bf4-0481-11e0-a99c-00144feabdc0.html("these [replica] rings sell overseas for $30 to $40 * * * [but] he makes them for $2 each and sells them for $3-4 as part of a wholesale order – a profit margin of up to 100 per cent")
My comment:
(a) cub... 阅读全帖 |
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l****n
发帖数: 6773 | 12 Why? This one is good for research.
Neo Material Technologies Inc. (NEM) is a producer, processor and developer
of neo powders, rare earths and zirconium-based engineered material and
applications through its Magnequench and AMR Performance Materials business
divisions. Magnequench division produces neo powder, which is used in the
production of bonded magnets, for micro motors, precision motors and other
applications. Rare earth and zirconium applications include automotive
catalysts, computers |
|
c**i
发帖数: 6973 | 13 Patti Waldmeir, Royal replicas feed Beijing’s vision; Royal wedding
replicas tell an important story about how China is haltingly moving away
from a sweatshop past towards a more upmarket future. Financial Times, Dec.
10, 2010.
http://www.ft.com/cms/s/0/ea670bf4-0481-11e0-a99c-00144feabdc0.html("these [replica] rings sell overseas for $30 to $40 * * * [but] he makes them for $2 each and sells them for $3-4 as part of a wholesale order – a profit margin of up to 100 per cent")
My comment:
(a) cub... 阅读全帖 |
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f**********g
发帖数: 2252 | 14 Avalon Reports Increase in Indicated Resources in the Nechalacho Rare Earth
Elements Deposit, NWT
Share
retweet
EmailPrint..Companies:Avalon Rare Metals, Inc. OrdinaAvalon Rare Metals Inc.
Related Quotes
Symbol Price Change
AVL 5.79 0.00
Press Release Source: Avalon Rare Metals Inc. On Thursday January 27, 2011,
4:37 pm EST
TORONTO, ONTARIO--(Marketwire - 01/27/11) - Avalon Rare Metals Inc. (TSX:AVL
- News)(AMEX:AVL - News) ("Avalon" or the "Company") is pleased to provide
an update on developme... 阅读全帖 |
|
d****r
发帖数: 911 | 15 “ Hydrogen produced from zirconium oxidation was vented from the
containment into the reactor
building.
Hydrogen in reactor building exploded causing it to collapse around
the containment.”
信息来源自American Nuclear Society
没有提到控制棒的问题，应该是第一时间到位。就是余热排除的问题了 |
|
j******h
发帖数: 3904 | 16
zirconium-water reaction
就是高温（900-1200K）下燃料棒外壳材料和水反应生成氢气 |
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i***a
发帖数: 195 | 17 靠，怎么MITBBS上的人这么MEAN和狭隘啊，当然讨论中我指的是Zirconium(Zr)。
感觉和高中生在辩论。 |
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S******1
发帖数: 1831 | 18 http://news.blogs.cnn.com/2011/03/16/japan-quake-live-blog-deat
[5:54 p.m. ET Wednesday, 6:54 a.m. Thursday in Tokyo] More on the U.S.
Nuclear Regulatory Commission chief's testimony on the "extremely high"
radiation levels at Japan's Fukushima Diiachi nuclear plant: He said spent
fuel rods in a spent-fuel pool in the plant's Unit 4 were exposed, and a
hydrogen explosion resulted earlier this week.
Robert Alvarez, senior scholar at the Institute for Policy Studies, tells
CNN that water had serve... 阅读全帖 |
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i***a
发帖数: 195 | 19 质子数 英文 繁体 简体 英文全称
43 Tc 鎝 锝 Technetium
50 Sn 錫 锡 Tin (來自拉丁語 Stannum)
34 Se 硒 硒 Selenium
40 Zr 鋯 锆 Zirconium
55 Cs 銫 铯 Caesium
46 Pd 鈀 钯 Palladium
53 I 碘 碘 Iodine
63 Eu 銪 铕 Europium
36 Kr 氪 氪 Krypton
48 Cd 鎘 镉 Cadmium
38 Sr 鍶 锶 Strontium
62 Sm 釤 钐 Samarium |
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D***n
发帖数: 6804 | 20 哈哈，你这次终于开始有长进的迹象，开始查钢号了。。。不过，还是力度不够啊。。
。。
你又搞错了，微合金钢不是翻译错误，而是真实存在的，wikipedia上说的很清楚：
Microalloyed steel is a type of alloy steel that contains small amounts of
alloying elements (0.05 to 0.15%). Standard alloying elements include:
niobium, vanadium, titanium, molybdenum, zirconium, boron, and rare-earth
metals. They are used to refine the grain microstructure and/or facilitate
precipitation hardening.[1]
These steels lie, in terms of performance and cost, between carbon steel and
low alloy steel.... 阅读全帖 |
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g********d
发帖数: 19244 | 21 ☆─────────────────────────────────────☆
felixcat (felixcat) 于 (Thu Mar 7 17:01:19 2013, 美东) 提到:
发现有一些人存在误解：认为碰撞测试成绩能代表有没有用高强度/超高强度/极高强度
钢材来造车身，有没有“不计成本”来给好货给消费者。从而一旦发现碰撞测试看上去
不好，就觉得车厂没有用好钢材省成本。
事实上并非这样，我下面列举一些具体的车型的车体结构，大家就能发现一些碰撞测试
成绩很好的车子，事实上并没有用很高强度的材料；而一些碰撞测试让人觉得成绩一般
的车子，事实上却是用了很不错的钢材。造成这种直觉上“对不上号”的原因在于，碰
撞测试成绩不完全取决于钢材硬度，它还跟车体形状、能量传递的设计意图有关。
首先看Audi A4。在small overlap碰撞测试成绩出来之后，这车子的结构强度在公众心
目中马上从天堂掉到了地狱。A柱拦腰截断，这不像话。
但是实际上A4车身框架用料极其足，车身结构有65%是强度超过300 MPa的高强度钢制造
；在这里面又有占全车身18%的材料是强度在500到1... 阅读全帖 |
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m**********r
发帖数: 2099 | 22 据有人推荐用金，耐用，我的牙医自己嘴里是金质。我用的是zirconium，颜色很接近
，对臼齿够用，$1200 |
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c***a
发帖数: 133 | 23 i was in the similar situation before, the same tooth. my husband is a
dentisit. he made a crown for me (when he was a resident), half porcelain (
cheek side) and half precious metal (tongue side, it is gold but it looks
white metal). He commented on the pros and cons of strength and cosmetic
concern.
But in retrospect, i (he too) think it is ok just go with porcelain.
I heard he talked about zirconium before - supposed to be quite cheap. but
he said the material is difficult to adjust. |
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a********k
发帖数: 1 | 24 Currently we have a postdoc opening in the area of computational materials
science at Idaho National Laboratory (INL). This position is jointly funded
by the Fuels Modeling & Simulations Department and
the Center for Advanced Modeling & Simulation at INL. We would like to hire
a postdoc to use molecular dynamics simulations to study oxygen transport at
different types of interfaces in zirconium dioxide and the mechanical
behavior of uranium dioxide under different types of driving forces. The
id... 阅读全帖 |
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l**j
发帖数: 40 | 25 看看下面就知道我们在美国的大部分人很WS.
代表性论文（引用率>1300, H-index=23）
1. Y. Z. Long, L. Liao*, X. F. Duan, Z. Y. Fan*, Large-scale
Integration of Semiconductor Nanowires for High Performance Flexible
Electronics ACS Nano (In press)
2. L. Liao, J. W. Bai, R. Chen, H. L. Zhou, L. X. Liu, Y. Liu, Y.
Huang, X. F. Duan, Scalable Fabrication of Self-Aligned Graphene Transistors
and Circuits on Glass Nano Lett. (In Press).
3. L. Liao, X. F. Duan Graphene-based RF devices Materials Today (In
Press).
4. ... 阅读全帖 |
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k****a
发帖数: 4944 | 26 10 things you didn’t know about the Nokia Lumia 920
http://conversations.nokia.com/2012/11/10/10-things-you-didnt-k
诺基亚的官方博客Conversations日前贴出一则文章，其中详细介绍了10项大家可能不
知道的关于Lumia 920的有趣细节：
1、Lumia 920的摄像头周围和侧边按键由锆制成
诺基亚Lumia 920的摄像头周围以及侧边的按键都是由锆（Zirconium）制成，根据我们
在网络采集到的资料显示，锆是高熔点金属之一，呈浅灰色。锆的表面易形成一层氧化
膜，具有光泽，故外观与钢相似。有耐腐蚀性，可溶于氢氟酸和王水；高温时，可与非
金属元素和许多金属元素反应，生成固体溶液化合物。
2、完美的同步浮动镜头
大家可能已经听闻过诺基亚Lumia 920的OIS（光学图像稳定器）采用了浮动镜头技术。
我们知道，普通的数码单反相机的图像稳定解决方案中只有一个可浮动镜头，而在诺基
亚Lumia 920中则是整个光学部件都能完美的与摄像头运动进行同步，也就是说Lumi... 阅读全帖 |
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b*****l
发帖数: 298 | 27 http://www.chem.uci.edu/~gemiller/reactor.html
这个东西跟那个电厂啥的不是一个级别的吧.
有看得懂的同学画个可能需要的疏散范围吧
The reactor is a 250 kilowatt steady-state power Mark I TRIGA reactor built
by General Atomics. Pulsing is possible to about 1000 megawatts if needed.
TRIGA reactors are water and zirconium hydride moderated to be especially
safe for training and research purposes. Fuel is uranium enriched to 20% in
U-235. The reactor first became critical in November 1969. The facility
specializes in neutron activation analy... 阅读全帖 |
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h****r
发帖数: 2056 | 28 Japan nuclear alert at Fukushima - Q&A
15 March 11 12:19 GMT
There have been two explosions at the Fukushima Daiichi nuclear power plant
in Japan, following Friday's earthquake and tsunami, and a third reactor is
reportedly at risk of fuel-rod meltdown.
How great a danger do these problems pose for people in Japan and further
afield?
Has there been a leakage of radioactive material?
Yes. Local government officials in Fukushima say 190 people have been
exposed to some radiation. An American warsh... 阅读全帖 |
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L****M
发帖数: 3673 | 29 fenwick 我用过elite tech 两款， 一款是 river runner。 7‘6 L 钛合金加sic。
杆很轻灵敏度也不错。 外加终身保修。觉得搞trout和crappie比较合适。 还有一款是
smallmouth 的纺车杆和bc杆， 都还蛮不错的。 不过insert 变成 Zirconium. 还是终
身保修。 当时杆刚推出的时候我买的，那时比较便宜。现在价钱涨上去了。 |
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T**r
发帖数: 7016 | 30 被你捡了一个漏，这是我看到的15刀的最好的杆子，GUIDE居然是Zirconium的内环！
你这是误导新人啊，你这个经验的可复制性太低了。 |
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M*******n
发帖数: 1165 | 31 是一种基于锆的子弹，单shell就5 USD，而且由于产生后座不足只能在手动action上用
。应该是有些州禁了这种子弹...
Dragon's Breath
Dragon's Breath at night
A Dragon's Breath usually refers to a zirconium-based pyrotechnic shotgun
round. When the round is fired, sparks shoot out to about 5 m (20 feet).[1]
While it has few tactical uses, the visual effect it produces is impressive,
similar to that of a short-ranged flamethrower. The pyrotechnic shell is
expensive compared to other shells, costing around 5 US dollars per shell.
Because it is a very... 阅读全帖 |
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O*******d
发帖数: 20343 | 32 铜和阳极铝根本不在考虑之列。
Despite the great numbers of metals and alloys known to man, remarkably few
warrant even preliminary consideration for uses as implant materials. The
relatively corrosive environment combined with the poor tolerance of the
body to even minute concentrations of most metallic corrosion products
eliminates from discussion most metallic materials. Of the possible metallic
candidates, tantalum and the noble metals do not have suitable mechanical
properties for the construction of most ... 阅读全帖 |
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d********O
发帖数: 1196 | 33 Title: Inorganic analogs of Langmuir-Blodgett films: adsorption of ordered
zirconium 1,10-decanebisphosphonate multilayers on silicon surfaces
J. Am. Chem. Soc., 1988, 110 (2), pp 618–620
DOI: 10.1021/ja00210a062
Please send to D********[email protected], if this is more convenient for you.
Thanks again and have a wonderful day! |
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d********O
发帖数: 1196 | 34 Title: Polyether derivatives of zirconium phosphate
Inorg. Chem., 1985, 24 (12), pp 1773–1778
DOI: 10.1021/ic00206a013
Please send to D********[email protected], if this is more convenient for you.
Thank you again and have a nice day. |
|
a*********r
发帖数: 14 | 35 对不起，我还真是给武大化学系留了面子。
莫非你就是其中一件丑事的主角，干嘛一触即发，破口大骂呢？
袁荃做的是还不错，但不意味武大化学系就有多好了。
举例来说，即使袁荃和另外一位新招的楚天特聘教授傅磊相比，也能看出武大化学系在其中有没有猫腻了。
首先补充一点：袁荃的老公叫廖蕾，也是武大物理系新招的楚天特聘教授，可以作为很好的对照体系。
比比三人的publication和经历，就能明显看出水平之比是:
廖蕾>袁荃>傅磊
但从袁荃却没有评上楚天特聘。
廖蕾
http://physics.whu.edu.cn/node/557
1. Y. Z. Long, L. Liao*, X. F. Duan, Z. Y. Fan*, Large-scale Integration of Semiconductor Nanowires for High Performance Flexible Electronics ACS Nano (In press)
2. L. Liao, J. W. Bai, R. Chen, H. L. Zh... 阅读全帖 |
|
a*********r
发帖数: 14 | 36 对不起，我还真是给武大化学系留了面子。
莫非你就是其中一件丑事的主角，干嘛一触即发，破口大骂呢？
袁荃做的是还不错，但不意味武大化学系就有多好了。
举例来说，即使袁荃和另外一位新招的楚天特聘教授傅磊相比，也能看出武大化学系在其中有没有猫腻了。
首先补充一点：袁荃的老公叫廖蕾，也是武大物理系新招的楚天特聘教授，可以作为很好的对照体系。
比比三人的publication和经历，就能明显看出水平之比是:
廖蕾>袁荃>傅磊
但从袁荃却没有评上楚天特聘。
廖蕾
http://physics.whu.edu.cn/node/557
1. Y. Z. Long, L. Liao*, X. F. Duan, Z. Y. Fan*, Large-scale Integration of Semiconductor Nanowires for High Performance Flexible Electronics ACS Nano (In press)
2. L. Liao, J. W. Bai, R. Chen, H. L. Zh... 阅读全帖 |
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y***o
发帖数: 416 | 37 Tailoring the Metallocene Structure To Obtain LLDPE by Ethene
Homopolymerization: An Experimental and Theoretical Study
Organometallics, 2008, 27 (7), pp 1367–1371
DOI: 10.1021/om7006562
http://pubs.acs.org/doi/abs/10.1021/om7006562
Branched Polyethylene by Ethylene Homopolymerization with meso-Zirconocene
Catalyst
Macromolecules, 1999, 32 (21), pp 6913–6916
DOI: 10.1021/ma9905876
http://pubs.acs.org/doi/abs/10.1021/ma9905876
Formation of Quaternary Carbon Centers in Ethylene Polymerization with... 阅读全帖 |
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y***o
发帖数: 416 | 39 1. o-Phenylene-Bridged Cp/Amido Titanium Complexes for Ethylene/1-Hexene
Copolymerizations
Organometallics, 2006, 25 (9), pp 2133–2134
DOI: 10.1021/om0601854
http://pubs.acs.org/doi/pdf/10.1021/om0601854
2. Synthesis of Hafnium and Zirconium Imino−Amido Complexes from Bis-
imine Ligands. A New Family of Olefin Polymerization Catalysts
Organometallics, 2007, 26 (16), pp 3896–3899
DOI: 10.1021/om7004723
http://pubs.acs.org/doi/pdf/10.1021/om7004723
非常感谢您的帮助！ |
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c***t
发帖数: 91 | 40 REDUCTION OF ALDEHYDES AND KETONES TO ALCOHOLS WITH HYDROUS ZIRCONIUM-OXIDE
AND 2-PROPANOL
DOI: 10.1246/cl.1985.731 |
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L*D
发帖数: 3966 | 41 推荐一款止汗产品，当然只是治标。
Secret Platinum，见下图。在Drugstore，像Welgreen,CVS 等的 Antiperspirant的专
柜有卖。
Active ingredient:
Aluminum zirconium octachlorohydrex |
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f**********g
发帖数: 2252 | 43 Avalon Reports Increase in Indicated Resources in the Nechalacho Rare Earth
Elements Deposit, NWT
Share
retweet
EmailPrint..Companies:Avalon Rare Metals, Inc. OrdinaAvalon Rare Metals Inc.
Related Quotes
Symbol Price Change
AVL 5.79 0.00
Press Release Source: Avalon Rare Metals Inc. On Thursday January 27, 2011,
4:37 pm EST
TORONTO, ONTARIO--(Marketwire - 01/27/11) - Avalon Rare Metals Inc. (TSX:AVL
- News)(AMEX:AVL - News) ("Avalon" or the "Company") is pleased to provide
an update on developme... 阅读全帖 |
|
