rg 发帖数: 12 | 1 我想能否用冷水做ice cream和热水冷水冷却速度是不相干的.
科普一把:
Is it true that hot water freezes faster than cold water or
that cold water boils faster than hot water? It seems hard
to believe, but some people swear that it is so.
Patrick Bachler
Chicago, Ill.
This seemingly simple question continues to generate considerable
controversy. Takamasa
Takahashi, a physicist at St. Norbert College in De Pere, Wis.,
attempts a definitive answer:
"Cold water does not boil faster than hot water. The rate |
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a*i 发帖数: 1652 | 2 不知道谁了解mouthguard这块应用?
看了维基的介绍,EVA好像用得很多:A thermo-plastic material manufactured in a
pre-formed shape in various sizes that can be adapted to fit more closely
to an individual's teeth and gums by heating and molding such as boiling
then placing in the mouth. Some are now available that incorporate special
fins within the fitting zones which increase retention and give an improved
fit over tradition boil and bite mouth types. Guards are usually made of
Ethylene-vinyl acetate[1][2]. This is the mos... 阅读全帖 |
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f**d 发帖数: 768 | 3 这是一本计算神经科学的优秀著作,全文拷贝这里(图和公式缺),有兴趣的同学可以
阅读
如需要,我可以分享PDF文件(--仅供个人学习,无商业用途)
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
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r**********9 发帖数: 19633 | 4
马蜂窝写boiling crab的review挺好的;boiling crab的海鲜很好吃 |
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F******e 发帖数: 3967 | 5 拍照片的时候有点干了。
1. a lobster (about 1 lb), have the grocery store cut into half from the
back and crash the claws.
2. put two soup bowl water, ginger slice, a little salt, 4 mushrooms (whole)
and rice wine and boil the lobster for 12 minutes.
3. meanwhile, boil half pound spagetti for 15 minutes or until tender.
4. cut the lobster meat and mushroom into small pieces.
5. put some cooking oil in the pan and half jar tomato/basil sauce and put
the lobster meat and mushroom and stir fry, add salt and se |
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w*******y 发帖数: 60932 | 6 Link:
http://www.amazon.com/o/ASIN/B004YV61RW/
List Price: $70.00
Price: $19.95 & eligible for FREE Super Saver Shipping on orders over $25 or
Prime.
You Save: $50.05 (72%)
In Stock.
Ships from and sold by Amazon.com.
Product Features
Holds 1-3/4-quart of water
Stainless steel
Ergonomic heat resistant handle
Pleasant whistling sound reliably signals boiling water
Limited lifetime warranty
Product Description
A gleaming stainless steel kettle is a classic that looks right in both
traditional and ... 阅读全帖 |
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w*******y 发帖数: 60932 | 7 Bob's Red Mill Organic Oat Bran Hot Cereal, 4x18oz:
http://www.amazon.com/gp/product/B000ED9L9E
$9
5-star product and most importantly:
quote
To make delightful breakfast cereal, add 1/4 tsp salt to 2 cups
water and bring to a boil. Slowly stir 2/3 cup Bob's Red Mill Organic Oat
Bran Cereal into the boiling water and cook for approximately 2 minutes.
Microwave Instructions: Combine the cereal, water and salt in a microwave
bowl and microwave in High for ... 阅读全帖 |
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r********0 发帖数: 22 | 8 My hometown in southern HeNan, bordering AnHui, alone had thousdands of
people died of famine. Dead bodies were dug out to be eaten. Hungry mobs
ambush the weak. Trees were bare (bark were peeled off for food). Grass
gone. Father wouldn't share food with son. Grandma cooked grandson for food
. Flour like white powdery soil were eaten and caused hundreds to die of
indigestion.
The harvest was not bad. In fact before the massive starvation, harvest were
best ever since the country was libera... 阅读全帖 |
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p**********d 发帖数: 7918 | 9 【 以下文字转载自 Military 讨论区 】
发信人: powerforward (今天你敏感詞了沒有), 信区: Military
标 题: TG展示力量:上海取消聖帕節遊行
发信站: BBS 未名空间站 (Thu Mar 3 22:20:59 2011, 美东)
China Tightens Controls on Foreign Press
http://www.nytimes.com/2011/03/04/world/asia/04china.html?_r=1&
Shiho Fukada for The New York Times
A police officer, left, filmed a foreign journalist as street cleaners swept
water to keep passersby moving and a plain clothes officer, right, watched
pedestrians on Sunday along Wangfujing Street in Beijing, where a pro... 阅读全帖 |
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j***b 发帖数: 5901 | 10 You can 举报抄作业 all you like, but it's just silly to compare it with the
kind of dishonesty Fang has been fighting. Clearly Fang won't 举报抄作业.
Nor had he 举报ed masters thesis that's not published.
How can importance not a factor? If it has been established that everyone
cheats more or less, then it all boil down to importance. |
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S*********n 发帖数: 4050 | 11 http://www.economist.com/node/10870258?story_id=10870258&top_st
Simmering resentment boils over
Mar 14th 2008 | LHASA
THE Chinese authorities had been fearing trouble, but nothing on this scale.
An orgy of anti-Chinese rioting convulsed the Tibetan capital, Lhasa, on
Friday March 14th, leaving security forces uncertain how to respond. For
many hours mobs controlled the streets, burning and looting as they pleased.
The approach of Beijing’s Olympic games in August is seen by many of Lhasa
’s resi... 阅读全帖 |
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j****e 发帖数: 12067 | 12 http://www.youtube.com/watch?v=xoG7U556HVc
I look at you and my blood boils hot, I feel my temperature rise
I want it all, give me what you got, there's hunger in your eyes
I'm gettin' closer, baby hear me breath, ha ha ha
You know the way to give me what I need
Just let me love you and you'll never leave
Feel my heat takin' you higher, burn with me, Heaven's on fire
Paint the sky with desire, angel fly, Heaven's on fire
I got a fever ragin' in my heart, you make me shiver and shake
Baby don't s... 阅读全帖 |
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d********g 发帖数: 14 | 13 再看看圣经记载犹太人吃自己孩子的记录
链接
http://bible.cc/lamentations/4-10.htm
Lamentations 4:10 耶利米哀歌The hands of the pitiful women have boiled their
own children; They were their food in the destruction of the daughter of my
people.
慈悲的婦人,當我眾民被毀滅的時候,親手煮自己的兒女作為食物。
Leviticus 26:29 利未記 'Further, you will eat the flesh of your sons and the
flesh of your daughters you will eat. 28-29 我就要發烈怒,行事與你們反對,
又因你們的罪懲罰你們七次。並且你們要吃兒子的肉,也要吃女兒的肉。
Deuteronomy 28:53 申命記 "Then you shall eat the offspring of your own body
, the flesh |
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c***s 发帖数: 70028 | 14 日本核泄漏事故发生后,美国麻省理工学院科技政策与产业发展中心的博士Josef Oehmen撰写了一篇题为“为什么我不担心日本的核电站”的文章,以相对通俗的话语解释了核安全问题,在网络上流传甚广。
不过,因为其主业为“供应链危机管理”(supply chain risk management)研究,因此文章的一些观点也引起了部分读者的质疑。
其后,文章作者Josef Oehmen发出声明:本文原是他发给在日本家人的email。后经他表弟发布在自己的博客上后,得以病毒性传播。Josef特地声明他本人并非核电专家或工程师。
刊发此文主要为读者提供更多资讯,中文译者为V2EX网站上的Livid。
以下为文章正文:
我在这里写下这些文字,是为了让大家对在日本发生的事情――核反应堆的安全问题,感到放心。事态确实严重,但是已经在控制范围内。这篇东西很长!但是你读完之后,你会比世界上任何记者都明白核反应堆究竟是怎么回事。
核泄漏确实已经发生,但是在将来不会有任何显著的泄漏。
“显著泄漏”大概会是个什么程度?打个比方说,可能比你乘坐一趟长途飞行,或是喝下一杯产自本身具有高程度自然辐射地区的啤酒,所受到的... 阅读全帖 |
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c***s 发帖数: 70028 | 15 3月16 日上午,凤凰网特别邀请卡内基和平基金会高级研究员涂建军做客演播室一一解读日本福岛第一核电站险情。涂建军认为,福岛核电站事故不可能像切尔诺贝利那么大。但谁都没有好办法将短期内马上解决各个反应堆里的问题,只能等反应堆自然冷却,反应器里的温度降下来。如果遇到最差最差的情况,可以做永久性的封存。
自11日强震发生以来,日本福岛第一核电站险情不断。目前,该核电站的6个机组当中,已有4个发生爆炸。核电站泄漏的放射性物质正在日本地区扩散。
福岛核事故后,在各国民众中引起一定恐慌。日本福岛核电站事故到底是什么状况?最坏可能带来怎样的后果?如何应对放射性物质在什么情况下会对人体产生危害?3月16日上午,凤凰网特别邀请卡内基和平基金会高级研究员涂建军做客演播室一一解读。涂建军认为,这个事情短期内马上解决,谁都没有好办法。如果把时间拉长一点,等自然冷却,反应器里的温度降下来,遇到最差最差的情况,可以做永久性的封存,技术上还是有解决方法的。
对话主持:陈芳
对话嘉宾:涂建军,卡内基和平基金会高级研究员,曾任加拿大温哥华MKJA公司资深能源与环境咨询顾问、加拿大工业能源终端使用数据和分析中心客座研究员... 阅读全帖 |
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i***s 发帖数: 39120 | 16 无论是方所里面(上图)还是方所外面(左图),都是密密麻麻的人。
柴静签售活动逼爆方所,上千读者被堵门外,有人投诉讲座叫“看见”现场“看不见”
方所运营总监向读者道歉,并承诺以后将做好准备工作
12月22日晚7时,方所提前关门,上千人堵在门口,方所门口的扶手电梯被迫停运。“喂,喂,喂,听到吗?这里信号不好。”不断有人焦虑地拨打着他们的手机,并不时往书店里探头张望。此时的他们,目的只有一个,看看他们手中拿着的书就知道《看见》,站四五个小时,望穿秋水,也只为见央视名记者柴静一面。
1、方所下午5时被迫暂停营业
柴静魅力实在太大,令方所自今年8月正式开业以来第一次提前清场。22日下午5时,由于书店里面已经站满了读者,方所接到警方的通知,为免出现意外,不得不提前关门清场,控制进场的听众数量。此时,方所内两百多人的听众区座无虚席,书店里凡是能立足的地方也都挤满了人。这些人在5时之前就进入方所等着看柴静。
晚上7时,门外的“人龙”已经拐了好几个弯,还不断有人涌入队伍。书店店员和商场保安“如临大敌”,小心翼翼地维持着现场秩序,有店员不断用扩音器重复:“讲座人数已经满了,请各位读者9点后再来参加签售活动... 阅读全帖 |
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o***s 发帖数: 42149 | 17 一日傍晚,一家美国中餐厅来了一对老外情侣。坐定,看菜单。
“给我来一份左宗棠鸡。”“SORRY,左宗棠鸡没有了。”“那就来一份史密斯夫妇吧。”“OK!”
给我来一份“史密斯夫妇”?这是什么梗?
Martin最新出炉的“美国2017餐饮排行榜”,休斯敦一家川菜馆招牌凉菜“夫妻肺片”荣登榜首,被选为“年度开胃菜”。而让人捧腹的是,这道菜的英文名被翻译成“史密斯夫妇”(Mr and Mrs Smith),源自一部好莱坞同名电影。
对此,记者分别采访了两位分别在成都和海外的川菜大师,他们对“夫妻肺片”翻译成“史密斯夫妇”,以及川菜海外推广方面的情况,发表了自己的看法:“一笑而过,不会在意。”
搞笑英译名
“夫妻肺片”有了摩登的名字
据称,美国媒体杂志发布了餐饮品赏大师Brett Martin 最新出炉的“美国2017餐饮排行榜”,休斯敦一家双椒川菜馆的招牌凉菜“夫妻肺片”荣登榜首,被选为“年度开胃菜”。其间,让人觉得有意思的是,这道菜的英文名被翻译成了“史密斯夫妇”(Mr and Mrs Smith),源自好莱坞同名电影。
川菜名小吃“夫妻肺片”咋和好莱坞电影《史密斯夫妇》扯上了关系?据了解,... 阅读全帖 |
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o***s 发帖数: 42149 | 18 据美国侨报网报道,1997年,7个美国家庭分别从中国收养了一名女孩,并由此建立起了一段长达20年的友谊。最近,这7个收养家庭中的5个举行了一次聚会。据报道,1996年,7名遭遗弃的女孩被安置在了中国浙江一家孤儿院里。而在世界的另一头,7对夫妇通过同一家收养机构在1997年2月坐上飞机,飞往了中国。
20年前7名中国女孩的合影。图片来源:美国侨报网
在中国,他们一起旅行,一起等待收养手续的完成,并由此成为朋友。很快他们又发现,几家人的住址相距不过3小时车程。这些年来,几家人总会在坎伯兰县沸泉(Boiling Springs)的柯里(Currie)夫妇家聚会,因为这里是几个家庭的“中间点”。
今年参加聚会的5名女孩。图片来源:美国侨报网
聚会期间,女孩们会一起去泡热水澡、表演才艺或者去沙龙美甲。今年,她们已经21岁了,聚会的话题也转向了男朋友、大学生活、实习工作和职业选择。遗憾的是,由于一些原因,今年有两名女孩没能参加聚会。
多年来,女孩们的家庭都在努力加强她们对自己出生国家的认识。有的家庭表示,他们会在中国春节时给她女儿带上中餐,还会为她读讲述中国的书籍。
关于在美国的生活,女孩子们则表... 阅读全帖 |
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l***x 发帖数: 684 | 19 well, bbq is only in special occasions, day to day life, it was simply
boiled or made into jerky.
and let me tell you this, first cut from any food is not to elder or
respected guest, that piece is for gods, not one is allowed to eat that. |
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m***n 发帖数: 12188 | 20 谈论大时间尺度的历史,必须和自然史结合起来。否则就会牛头不对马尾。下面是我做
的一个记录历史事件的 excel文件的一部分拷贝:
只有把整个人类的历史合在一起,而非按地理,民族分类,才能真正听到文明前进的脚
步声,看到“这生命的千军万马,呼啸向前的景象”(参考柏格森《创造的进化》一书
最后一段)。
time events
c 3000000 BC Stone tools S&T
c 1600000 BC most recent ice age begins nature
c 1400000 BC 人类开始用火 use of fire S&T
c 50000 BC a meteorite falls in Arizona, 440,000 tons, and forms a crater
1.2 km wide and 150 m deep nature
c 40000 BC mining, the oldest mine known is at Bomvu R... 阅读全帖 |
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m*****5 发帖数: 23482 | 21 看到这个做法:
For thin yogurt:
*
Place cold, pasteurized milk in top of a double boiler and stir in
nonfat dry milk powder. Add sugar or honey if a sweeter, less tart yogurt is
desired.
*
Heat milk to 200 degrees F, stirring gently and hold for 10 minutes.
Do not boil.
*
Place top of double boiler in cold water to cool milk rapidly to 112
degrees F to 115 degrees F. Watch the temperature carefully as it falls
rapidly once it reaches 125 degrees F. Remove pan from cold wat |
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a*****0 发帖数: 6788 | 22 Craw fish! not lobster. They are dirty cheap in American South. They are
sold live in many grocery stores during the season. My quota is 5 pounds/
person when I host a craw fish boil party. |
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w*******q 发帖数: 1764 | 25 南边的没不知道crawfish boil的,年年都有,一筐子一筐子的吃的。欧洲吃的也不少
,我去开会的时候有吃过不少。 |
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h*****n 发帖数: 2415 | 26 "Slay the unbelievers wherever you find them.” Quran 2:191
“Make war on the infidels living in your neighborhood.” Quran 9:123
“When opportunity arises, kill the infidels wherever you catch them.”
Quran 9:5
“Any religion other than Islam is not acceptable.” Quran 3:85
“The Jews and the Christians are perverts; fight them.” Quran 9:30
“Maim and crucify the infidels if they criticize Islam” Quran 5:33
“Punish the unbelievers with garments of fire, hooked iron rods, boiling
water; melt their skin a |
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h*****n 发帖数: 2415 | 27 "Slay the unbelievers wherever you find them.” Quran 2:191
“Make war on the infidels living in your neighborhood.” Quran 9:123
“When opportunity arises, kill the infidels wherever you catch them.”
Quran 9:5
“Any religion other than Islam is not acceptable.” Quran 3:85
“The Jews and the Christians are perverts; fight them.” Quran 9:30
“Maim and crucify the infidels if they criticize Islam” Quran 5:33
“Punish the unbelievers with garments of fire, hooked iron rods, boiling
water; melt their skin a |
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d*****l 发帖数: 8441 | 28 Agree.
TG is boiling the water gradually and slowly and steadily. |
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i***a 发帖数: 4718 | 29 http://www.nytimes.com/2010/10/07/world/asia/07china.html?_r=1&hp
By ANDREW JACOBS and JONATHAN ANSFIELD
Published: October 6, 2010
BEIJING — With just a day until the Nobel Peace Prize is awarded, the usual
whirl of speculation over the winner is in full force, with many human
rights advocates contending that an imprisoned Chinese dissident, Liu Xiaobo
, has emerged as the favorite.
If selected, Mr. Liu, a former literature professor who has spent the last
20 years cycling in and out of Chinese... 阅读全帖 |
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m**********n 发帖数: 27535 | 30 http://www.nytimes.com/2010/10/07/world/asia/07china.html?_r=1&hp
Unusual Opposition to a Favorite for Nobel
By ANDREW JACOBS and JONATHAN ANSFIELD
Published: October 6, 2010
BEIJING — With just a day until the Nobel Peace Prize is awarded, the usual
whirl of speculation over the winner is in full force, with many human
rights advocates contending that an imprisoned Chinese dissident, Liu Xiaobo
, has emerged as the favorite.
If selected, Mr. Liu, a former literature professor who has spent the ... 阅读全帖 |
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g**1 发帖数: 10330 | 31 http://www.cnbc.com//id/39567592
Moody's Puts China in Line for Possible Credit Upgrade
Published: Friday, 8 Oct 2010 | 12:36 AM ET Text Size
By: Reuters
Moody's Investors Service rewarded China on Friday for its response to
the global financial crisis by placing the government's bond rating on
review for a possible upgrade.
China's resilient economic performance, the prospect of continued strong
growth over the medium term and the likelihood that Beijing can handle
any losses from an unpreceden... 阅读全帖 |
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x*********g 发帖数: 11508 | 32 一年前的文章,现在读仍然很有意义。
http://www.bbc.co.uk/blogs/newsnight/paulmason/2009/11/rare_earth_the_new_great_game.html
Rare earth: The New Great Game
Post categories: China, Energy, Technology, Trade
Paul Mason | 14:57 UK time, Wednesday, 18 November 2009
The rare earth story goes to the heart of China's relationship with the West
- not just that, but to the heart of the West's inability to understand
China.
It is a complicated story, involving a whole chunk of the Periodic Table,
high secrecy, patent batt... 阅读全帖 |
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s**********a 发帖数: 3273 | 33 Right... so you want to run the central bank of a country like
a hedge fund. That's just so brilliant by itself.
your volume is 10% of daily volume and it's okay????
do you really know what you are talking about?
And how do you do it? open an account in a broker? Buy AAPL or whatever
with 10% daily volume and you think any government will let you do that?
Do you know as soon as Hu HINTs China is going to buy some portugal
government bonds, the whole European markets from FX to commodities to
sto... 阅读全帖 |
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d*******l 发帖数: 2567 | 34 Explain this,please:
>>>>>>>>>>>>>>
Do you know as soon as Hu HINTs China is going to buy some portugal
government bonds, the whole European markets from FX to commodities to
stocks to bonds everything just get boiled? and even US markets follow? |
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s****i 发帖数: 2993 | 35 Shandong, no cooking. but can boil water for certain foods. mostly eat cold
food prepared before eve. |
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g*****c 发帖数: 4378 | 37
this is a wrong comparision. it should be boiling鸡蛋不好吃, how
to cook to make it 好吃.
it was because we were poor before, we saved a lot of money
along the way we were getting richer.Now we are changing the
strategy, shifting from manufacturing to high tech
不买美国国债会死
this went back to my original question, what should we do with
the researve?
this could be one of the reasons. |
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p**********d 发帖数: 7918 | 38 China Tightens Controls on Foreign Press
http://www.nytimes.com/2011/03/04/world/asia/04china.html?_r=1&
Shiho Fukada for The New York Times
A police officer, left, filmed a foreign journalist as street cleaners swept
water to keep passersby moving and a plain clothes officer, right, watched
pedestrians on Sunday along Wangfujing Street in Beijing, where a protest
had been called.
By SHARON LaFRANIERE
Published: March 3, 2011
BEIJING — Apparently unnerved by an anonymous Internet campaign urging... 阅读全帖 |
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z*****a 发帖数: 3809 | 39 http://news.newamericamedia.org/news/view_article.html?article_
Editor’s Note: A Chinese-American professional in Silicon Valley reviews
recent federal prosecution against Chinese Americans for espionage and finds
the real guilty party to be the FBI. NAM contributor Dr. George Koo has
been a consultant for American companies in China for 30 years.
When a Chinese American is accused of spying for China, other Chinese
Americans feel a chill, especially professionals like myself in Silicon
Valley.
... 阅读全帖 |
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h***y 发帖数: 4936 | 40 其更新
Here's the situation around me.
The NHK is saying that the chance of getting aftershocks bigger than M7.0 is
~70%.
Supermarkets and kombinis in central Sendai are emptied out today, but I
have secured food for ~2 weeks, with a 5kg bag of rice.
I'm just going out to help out people in Higashi Nibancho school in central
Sendai.
Still experiencing aftershocks.
No gas/heating yet. I have filled the bathtub with water and I pour some
boiling water when I try to take a bath tonight.
I have water, ... 阅读全帖 |
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J*********r 发帖数: 5921 | 41 http://songshuhui.net/archives/51583
科学松鼠会的文章
原作:Josef Oehmen
V2EX译者:Livid
我在这里写下这些文字,是为了让大家对在日本发生的事情——核反应堆的安全问题,感到放心。事态
确实严重,但是已经在控制范围内。这篇东西很长!但是你读完之后,你会比世界上任何记者都明白
核反应堆究竟是怎么回事。
===============================================================
核泄漏确实已经发生,但是在将来不会有任何显著的泄露。
“显著泄露”大概会是个什么程度?打个比方说,可能比你乘坐一趟长途飞行,或是喝下一杯产自本身
具有高程度自然辐射地区的啤酒,所受到的辐射要多一些。
我读了自从地震发生以来的所有新闻报道。可以说几乎没有一篇是准确或是无误的(当然也可能是因
为地震发生之后在日本的通讯问题)。关于“没有一篇是无误的” 我并不是指那些带有反核立场的采
访,毕竟这在现在也挺常见的。我指的是其中大量的关于物理和自然规律的错误,及大量对于事实的
错误解读——可能是因为写稿子的人本身并不了... 阅读全帖 |
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d*****n 发帖数: 259 | 42 日本核事故浅析zt
由于以前是这个专业的,所以这几天对于日本福岛核电厂的核事故比较关心。看了几天
电视, 越看越没谱,cnn的这帮傻X像打了鸡血似的上蹿下跳,胡说八套,以我有限的
知识先抛几块砖,砸下cnn这帮傻X。
日本福岛核电厂一号堆是美国GE公司50年代的设计,60年代施工,70年并网发电的第一
代沸水堆(Boiling Water Reactor),设计装机容量40万千瓦,设计寿命40年,本来
今年3月就寿终正寝了,但是日本这倒霉催的赶上这千年不遇的地震加海啸,估计电厂
老板都给气崩了。
电视上你看到的外面的大方块是预应力混凝土制造的安全壳,所有和辐射有关的一回路
设备,反应堆,高压水泵等,都保护在里面。从房顶往下数4分之1高度主要有吊车和导
轨,主要是换料和维修的工作车间(爆炸的就是这一块)。
再往下数4分之1高度是安全水箱,在发生重大事故的时候,水箱的水淹没在正下方反应
堆所在的压力容器。从新闻看,这个好像没有发生。原因可能是:
1,老式的设计里面可能没有安全水箱,GE应该出来澄清一下。
2,有可能没注入水或由于地震水没了,
再往下正中间的位置,有一个大约6米高雪茄形状的压... 阅读全帖 |
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x*********g 发帖数: 11508 | 43 美国网民对日本海啸评论-翻译贴
作者:tvenana 发表日期:2011-3-13 10:28:00
本来应该翻译点日本网民的评论,但我还不会日文,就翻译点美国的吧,大家就随
便看看。
―――――――――――――――――――――――
Japan struggles with nuclear reactors in wake of quake
By the CNN Wire StaffMarch 13, 2011 -- Updated 0016 GMT (0816 HKT)
日本在地震之后,忙于对付核电站
――――――――――――
美国网民评论:
NPC If this had happened in the USA the streets would have been full of
people running. One hand holding up their pants and 1 holding a stolen TV
and a box of tennis shoes.
3 minutes ago | Like (3) | Report abuse
这个如果发生... 阅读全帖 |
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w*********g 发帖数: 30882 | 44 "为什么我不担心日本的核电站"帖子可以宣布为造谣惑众帖了
================================================================
发信站: BBS 未名空间站 (Mon Mar 14 21:15:08 2011, 美东)
接管修改后的文章地址:http://mitnse.com/
原作:Josef Oehmen
V2EX原译者:Livid
转帖整理时间:3/14/2011 9:00pm EST 待整理,与原文有不少出入
我们得先讲一些基本原理,然后解释目前正在发生的是什么。
福岛核电站的结构
福岛核电站的反应堆属于“沸水反应堆”(Boiling Water Reactors),缩写 BWR。沸
水反应堆和我们平时用的蒸汽压力锅类似。核燃料对水进行加热,水沸腾后汽化,然后
蒸汽驱动汽轮机产生电流,然后蒸汽冷却后再次回到液态,然后再把这些水送回核燃料
处进行加热。蒸汽压力锅内的温度通常大约是 250 摄氏度。
上文提到的核燃料就是氧化铀。氧化铀是一种熔点在 3000 摄氏度的陶瓷体。燃料被制
作成小圆柱(想像一下就像乐高积木尺... 阅读全帖 |
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D*****r 发帖数: 6791 | 45 原文:http://mitnse.com/
原作:Josef Oehmen
V2EX原译者:Livid
转帖整理时间:3/14/2011 9:00pm EST 待整理,与原文有不少出入
我们得先讲一些基本原理,然后解释目前正在发生的是什么。
福岛核电站的结构
福岛核电站的反应堆属于“沸水反应堆”(Boiling Water Reactors),缩写 BWR。沸
水反应堆和我们平时用的蒸汽压力锅类似。核燃料对水进行加热,水沸腾后汽化,然后
蒸汽驱动汽轮机产生电流,然后蒸汽冷却后再次回到液态,然后再把这些水送回核燃料
处进行加热。蒸汽压力锅内的温度通常大约是 250 摄氏度。
上文提到的核燃料就是氧化铀。氧化铀是一种熔点在 3000 摄氏度的陶瓷体。燃料被制
作成小圆柱(想像一下就像乐高积木尺寸的小圆柱)。这些小圆柱被放入一个用锆锡合
金(熔点 2200 摄氏度)制成的长桶,然后密封起来。这就是一个燃料棒(fuel rod)
。然后这些燃料棒被放到一起组合为一个更大的单元,然后这些燃料单元被放入反应堆
内。所有的这些,就是一个核反应堆核心(core)的内容。
锆锡合金外壳是第一层护罩... 阅读全帖 |
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z****y 发帖数: 246 | 46 原作:Josef Oehmen
V2EX译者:Livid
我在这里写下这些文字,是为了让大家对在日本发生的事情——核反应堆的安全问题,
感到放心。事态确实严重,但是已经在控制范围内。这篇东西很长!但是你读完之后,
你会比世界上任何记者都明白核反应堆究竟是怎么回事。
核泄漏确实已经发生,但是在将来不会有任何显著的泄露。
“显著泄露”大概会是个什么程度?打个比方说,可能比你乘坐一趟长途飞行,或是喝
下一杯产自本身具有高程度自然辐射地区的啤酒,所受到的辐射要多一些。
我读了自从地震发生以来的所有新闻报道。可以说几乎没有一篇是准确或是无误的(当
然也可能是因为地震发生之后在日本的通讯问题)。关于“没有一篇是无误的” 我并
不是指那些带有反核立场的采访,毕竟这在现在也挺常见的。我指的是其中大量的关于
物理和自然规律的错误,及大量对于事实的错误解读——可能是因为写稿子的人本身并
不了解核反应堆是如何建造和运营的。我读过一篇来自 CNN 的三页长度的报道,每一
个段落都至少包含一个错误。
接下来我们会告诉大家一些关于核反应堆的基本原理,然后解释目前正在发生的是什么。
福岛核电站的反应堆属于“沸水反应... 阅读全帖 |
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N***r 发帖数: 2539 | 47 "increased water evaporation or mild boiling" |
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n**c 发帖数: 163 | 48 同感,否则干嘛不说boiling point? |
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P*****t 发帖数: 4978 | 49 看来核事故惹怒了不少人
No home. No help. No hope: Now Japan's despair turns to anger
As it struggles to gain control of a nuclear crisis and to feed and shelter
the thousands of people left homeless by last week's devastating tsunami,
the Japanese government is facing a growing chorus of criticism for its
handling of the catastrophe.
Amid vociferous unease in the Japanese media at the apparent lack of
progress in providing people in the country's stricken north-east with the
bare essentials they need to su... 阅读全帖 |
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l*******s 发帖数: 7316 | 50 日本也不是紧抱着落后的第二代反应堆不放。各国运行的核电站大多是第二代反应堆。
第三代反应堆只有4种。大多建在日本。
http://en.wikipedia.org/wiki/Generation_III_reactor
1。Advanced Boiling Water Reactor (ABWR) — A GE design that first went
online in Japan in 1996.
2。Advanced Pressurized Water Reactor (APWR) — developed by Mitsubishi
Heavy Industries.
3。Enhanced CANDU 6 (EC6) — developed by Atomic Energy of Canada Limited.
4。VVER-1000/392 (PWR) — in various modifications into AES-91 and AES-92
第三代以后反应堆还没开始兴建。 |
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