s****c
发帖数: 11300 | 1 why?
For public radiation protection, the Equivalent Dose is equal to Effective
Dose. So if the unit is Sv I don't think they have big differences.
UNLESS you specify another condition.
discussion. |
|
T*****T
发帖数: 640 | 2 Hi, but you know the Media and Jap's power plant and govement used the unit
of Sv, they meant the DOse Equivalent.
This is the point. So when we considering the radiation effect, we have to
consider another term of effective DOse Equivalent.
Actually, that guy really does not understand the difference between them. |
|
i******s
发帖数: 8734 | 3
unit
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
为啥是这个， 而不是EFFECTIVE DOSE EQUIVALENT?
dose equivalent 俺觉得在实际应用中没有啥意义呀
to |
|
T*****T
发帖数: 640 | 4 Guy, for the radiation management, there is obvious difference between them.
You know, the community of radiation have to give a general term, Dose
Equivalent, for defining the radiation effect on human. They can not used
the effective dose equivalent because of the differences among different
organs. |
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i******s
发帖数: 8734 | 5
of
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`
为啥这么说呢? 安认为Sv 既可以是effective 又可以指EQUIVALENT
但是讨论dose limit 的时候, 安认为应该只effective .因为制定limit 的时候的dose
计算是base on effective 的 |
|
s*********0
发帖数: 2045 | 6 Cassens (1997) reported that commercially prepared meats in the United
States contain approximately 10 mg/kg sodium nitrite when consumed.
Consumption of one 45 g wiener therefore results in ingestion of 0.45 mg of
sodium nitrite, over 400 times less than the lethal dose for a child and
over 2,000 times less than the lethal dose for an adult.
吃一根新鲜的热狗，亚硝酸盐比上面24小时的红烧肉还多一倍多。美国人怎么都活得好
好的？
reference: http://meatsci.osu.edu/borca2.htm |
|
b*******y
发帖数: 4304 | 7 中药的科学研究丰碑（修改版）
饶毅1 黎润红2 张大庆2
中国 北京 100871北京大学 1生命科学学院 2医学部
摘要
1970年代早期，多数中国科学家，在文化大革命中努力生存而无机会开展研究。两位年
轻的研究者屠呦呦和张亭栋，分别在发现抗疟新药青蒿素和揭示砒霜化学成分三氧化二
砷对白血病的治疗作用的过程中起了关键作用。回顾四十年前开始的历程，不乏曲折和
反讽。青蒿素工作源于中国帮助越南抵抗美国，三氧化二砷源于观察、验证和改进乡村
中医的实践。虽然他们的药物挽救了世界上很多生命，两位研究者迄今未获国内外充分
肯定，屠呦呦有争议、张亭栋基本默默无闻。相关的文献埋没于冷僻的杂志和一般不易
看到的内部会议资料。基于原始中文论文、文件和采访，我们在此呈现这些发现的历史
概貌。没有逃脱我们的注意，在古代和近现代中文文献及医疗实践中，可能还有尚待重
新发现的珍宝。
引言
在中国使用了上千年的传统药物，能否改善现代人类的健康？在中国，有些人不认为这
是问题，而在中国以外的世界，中药并非现代人类普遍使用药物的主要来源。
对中药有两种截然相反的看法：在现代医学进展到今天后中药意义很小，甚至毫... 阅读全帖 |
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O*******d
发帖数: 20343 | 8 By November 26, 1941, Andrew J. Moyer, the lab's expert on the nutrition of
molds, had succeeded, with the assistance of Dr. Heatley, in increasing the
yields of penicillin 10 times. In 1943, the required clinical trials were
performed and penicillin was shown to be the most effective antibacterial
agent to date. Penicillin production was quickly scaled up and available in
quantity to treat Allied soldiers wounded on D-Day. As production was
increased, the price dropped from nearly priceless in ... 阅读全帖 |
|
s*********8
发帖数: 901 | 9 A small but growing number of teens and even younger children who think
they were born the wrong sex are getting support from parents and from
doctors who give them sex-changing treatments, according to reports in the
medical journal Pediatrics.
It's an issue that raises ethical questions, and some experts urge caution
in treating children with puberty-blocking drugs and hormones.
An 8-year-old second-grader in Los Angeles is a typical patient. Born a girl
, the child announced at 18 months, "I ... 阅读全帖 |
|
T*R
发帖数: 36302 | 10 Sometimes the low dose ones from factory are out of stock, pharmacy tech
will prepare some from high dose vial.
It is very common in hospital.
Actually, it is very easy to access the pain medication if you(doc, nurse,
pharmacist) want. But eventually you will be caught.
在 narcotics07 (爱谁谁) 的大作中提到: 】 |
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c******k
发帖数: 8998 | 11 维生素A脂溶性的，容易在体内富集，比其他的水溶性维生素更容易overdose
http://en.wikipedia.org/wiki/Vitamin_A#Toxicity
In general, acute toxicity occurs at doses of 25,000 IU/kg of body weight,
with chronic toxicity occurring at 4,000 IU/kg of body weight daily for 6–
15 months.[38] However, liver toxicities can occur at levels as low as 15,
000 IU per day to 1.4 million IU per day, with an average daily toxic dose
of 120,000 IU per day, particularly with excessive consumption of alcohol.
In people with renal failure, 4000 IU ... 阅读全帖 |
|
d**********x
发帖数: 4083 | 12 http://www.farnorthscience.com/2007/09/10/ak-sci-forum/squirrel
Squirrels and toxic mushrooms; aspens and leaf miners
By Ned Rozell
Amanita muscaria
Source: Wikipedia Commons
This column is provided as a public service by the Geophysical Institute,
University of Alaska Fairbanks, in cooperation with the UAF research
community. Ned Rozell is a science writer at the institute.
Fairbanks reader Darleen Masiak recently saw a red squirrel carrying an
Amanita mushroom across her deck, presumably to st... 阅读全帖 |
|
s*****r
发帖数: 11545 | 13 WASHINGTON (AP) — A baby born with the virus that causes AIDS appears to
have been cured, scientists announced Sunday, describing the case of a child
from Mississippi who's now 2½ and has been off medication for about
a year with no signs of infection.
There's no guarantee the child will remain healthy, although sophisticated
testing uncovered just traces of the virus' genetic material still lingering
. If so, it would mark only the world's second reported cure.
Specialists say Sunday's a... 阅读全帖 |
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j****n
发帖数: 7636 | 14 我对吸烟是肺癌的主要因素没有反对意见。我只是不相信这个90%。WKP上的文献也只是
个报告没有讲那些数字是如何算出来了。我还是认为这个数字是为了政治正确，夸张了
。再说这个是西方（污染控制的比较好的地方）的数据，不同人群中，这个比例是很不
一样的。更重要的是不能用这个数据来说明污染对肺癌的影响可以小到忽略不计，因为
不少癌症本来就可能是需要多个因素共同作用才导致的。
更简单的反驳是北京肺癌这些年发病率提高了56%，如果抽烟的比率基本没有变的话，
那那些多出来的癌症就应该是别的因素引起的。比如饮食，生活习惯，人口结构还有污
染。
具体说中国下面这片文章应该是最大规模的流行病学研究了。估计出来吸烟导致的肺癌
是38%。
http://ije.oxfordjournals.org/content/21/2/197.full.pdf
Liu Z Y (Institute of Environmental Health and Engineering, Chinese Academy
of Preventive Medicine, 29 Nan Wei Road, Beijing 100050... 阅读全帖 |
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j****n
发帖数: 7636 | 15 已经讲了不同人群中这个比例是不一样的，中国的数据也不是没有。具体说中国下面这
片文章应该是最大规模的流行病学研究了。估计出来吸烟导致的肺癌是38%。
http://ije.oxfordjournals.org/content/21/2/197.full.pdf
Liu Z Y (Institute of Environmental Health and Engineering, Chinese Academy
of Preventive Medicine, 29 Nan Wei Road, Beijing 100050, People's Republic
of China)
Smoking and and lung cancer in China: combined analysis of eight case-
control studies. International Journal of Epidemiology 1992; 21: 197-201.
Smoking is well established as a principal risk factor for lun... 阅读全帖 |
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g****a
发帖数: 1520 | 16 【 以下文字转载自 WaterWorld 讨论区 】
发信人: boblide (bobolide), 信区: WaterWorld
标 题: 投放铊毒的量：hanlin 要确认是acute toxicity 还是 lethal
发信站: BBS 未名空间站 (Sat Apr 20 02:20:40 2013, 美东)
注意看2006 年黑出来的回帖纲要，里面有很多他们往来的邮件，其中有一条是hanlin
向sunwei确认朱令血中的毒量检测，因为hanlin想搞清楚到投的是acute toxicity
dose, 让朱老肚子，不能考试，留级，从而甩脱，还是lethal dose，要人命。说明她
知道要投毒，但不知道投了多少毒，因为毒不是她弄的。 |
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r****n
发帖数: 179 | 17 http://bbs.tianya.cn/post-funinfo-4097427-1.shtml
"
Back to your question, according to media, it's
lethal, I mean dose in ZL's blood.
--- Hanlin Li wrote:
> Sun Xiaozhu,
>
> I've searched a different database (OVID/MEDLINE)
> from
> Pfizer e-library, unfortunately, almost all
> references
> don't have full-text available. I've requested a
> couple of papers of interest through our
> inter-library
> loan (it ususally takes ~ 2 days), but not much
> striking information was o... 阅读全帖 |
|
k****s
发帖数: 7334 | 18 I mean dose in ZL's blood. 这个不是说他们给ZL的剂量吗...DOSE在这里好奇怪啊 |
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k****s
发帖数: 7334 | 19 我打酱油的..一直看热闹一样看这个话题..昨天看见有个贴说铊们的信的, 看见一句话
"I mean the dose in zl's blood" 这个绝对是他们下毒的铁证了. dose这个词是非常
specific, 在说话的人和被说的人和物之间是有主动/被动和给予/接受的关系的,里面
有很明显的intention.如果是没有参与的人会说concentration, blood level |
|
g***j
发帖数: 40861 | 20 【 以下文字转载自 WaterWorld 讨论区 】
发信人: nile (nile), 信区: WaterWorld
标 题: 证据！远程诊断追查铊毒真凶
发信站: BBS 未名空间站 (Wed May 8 15:15:54 2013, 美东)
核心提要：朱令案的证据并没有完全灭失，有些证据是无法销毁的，甚至就在我们眼前
。我们已经掌握了第一条证据：贝志城电脑上所谓的“专家电子邮件”是假的。出现在
东方时空《朱令十二年》专题片中电脑屏幕上的“专家电子邮件”可以完全肯定不是“
专家电子邮件”。尼罗河在此呼吁所有关心朱令铊毒案的人们共同努力，推动中国警方
重新启动此案调查。
对19年前发生的朱令案，尼罗河一直没有关注过。直到不久前看到一则新闻，说清华才
女被同室同学孙维伙同其他两人下毒身残还信以为真。没过几天又看到消息说朱令中毒
案19年悬而未破。才发现有人故意装神弄鬼，于是连续撰写了两篇文章分析朱令铊毒案
。在查找相关资讯过程中，发现贝志诚在朱令咖啡杯的问题上撒了一个大谎。这就使人
不得不查考他如此殚精竭虑要把孙维推向审判台的真实动机。
朱令案一个非常重要的环节就是通过互联网征询诊... 阅读全帖 |
|
b********n
发帖数: 38600 | 21 http://www.realfarmacy.com/cdc-admits-98-million-americans-rece
The CDC has quickly removed a page from their website, which is now cached
here, admitting that more than 98 million Americans received one or more
doses of polio vaccine within an 8-year span when a proportion of the
vaccine was contaminated with a cancer causing polyomavirus called SV40. It
has been estimated that 10-30 million Americans could have received an SV40
contaminated dose of the vaccine.
Read more at http://www.realfarm... 阅读全帖 |
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y***u
发帖数: 7039 | 22 看了基本上所有的讨伐转基因玉米诱导癌变的评论，大部分都比较粗浅，不具有科学价
值和说服力。
下面这片比较客观， 就像作者所说的，对此课题比较熟悉。 认为作者有新的发现，
统计方法有效，实验结果具有价值。
Jack A. Heinemann
Centre for Integrated Research in Biosafety, School of Biologial Sciences,
University of Canterbury, Christchurch, New Zealand
Food and chemical toxicology, Volume 53, March 2013, Pages 442
Dear Editor
I have carefully read the paper entitled “Long term toxicity of a Roundup
herbicide and a Roundup-tolerant genetically modified maize”. I am very
familiar with historical public... 阅读全帖 |
|
C*I
发帖数: 4736 | 23 我们现在对照这篇paper和中国方面的调查来看看这中间的差异。
一，关于实验对象选择，
From a total of 112 subjects screened, 72 were enrolled in the study, and
sufficient serum samples to facilitate both the HPLC and gas chromatography
–mass spectrometry analyses were collected from 68 subjects (this varied
from 1 to 5 time points per subject).
2008年5月20日至6月23日，含“黄金大米”实验组的试验在湖南省衡南县江口镇中心小
学实施，试验对象为80名儿童。
二，实验的审批与合法性，
The study recruitment processes and protocol were approved by the
Institutional Review Board–Tufts Medical Center in the U... 阅读全帖 |
|
d*b
发帖数: 21830 | 24 你要多读点书就不会这么jjww了。U235也好，U238也好，自然辐射剂量是很低的，因为
丫的主要通过alpha衰变。事实上我都亲手摸过U238，防护U238/235最重要防护手
段是防毒面具和医院里常用的防护服，这玩意主要是防止internal radiation。
当然，那玩意要是钚弹就另外一会事了，钚本身并不可怕，可怕的是钚弹里的添加物。
具体技术细节我就不说了，但那要是钚弹的话，我估计邓当场就见马克思了。
邓的life dose可能比别人高点，但low dose对人生物学的影响，到今天还是个未知数
，你说的这个邓的故事更多的是因为宣传需要，而不是真正导致cancer的原因。
外行看热闹，你就是个典型例子。 |
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b********n
发帖数: 38600 | 25 How the West Turns on Its
http://www.nytimes.com/2015/02/12/opinion/jochen-bittner-can-an
HAMBURG, Germany — Consider the following sentences. First: “Let every
nation know, whether it wishes us well or ill, that we shall pay any price,
bear any burden, meet any hardship, support any friend, oppose any foe to
assure the survival and the success of liberty.”
And second: “I call ... upon Russia to use its considerable influence over
separatist leaders to stop any form of military, political or fin... 阅读全帖 |
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l*******1
发帖数: 16217 | 26 送你们一篇又争议的文章
Neurology. 1993 Feb;43(2):293-300.
Relationship between cigarette smoking and Alzheimer's disease in a
population-based case-control study.
Brenner DE1, Kukull WA, van Belle G, Bowen JD, McCormick WC, Teri L, Larson
EB.
Author information
Abstract
We investigated whether cigarette smoking is negatively associated with
Alzheimer's disease (AD) in a population-based, frequency-matched, case-
control study of 152 AD patients and 180 controls. Ever having smoked was
associated with lower... 阅读全帖 |
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r*******g
发帖数: 5495 | 27 你不是在站内信说你没有感染吗？
既然是细菌感染，3周不行，再吃3周-3个月
关于这个saw palmetto，它主要是用来治疗良性前列腺肥大的。
一个最新的报道提到它和finasteride (5alpha-Reducatase inhibitors)效果类似，但
副作用小。
另个报道说没效果：In two recent well-conducted trials of different saw
palmetto extracts, no effect on symptoms greater than placebo was seen, even
when the dose was pushed up to three times the standard dose of 320 mg
daily.
不过，临床医生对良性前列腺肥大的病人建议用此植物，因为基本无副作用。
Primary Care Medicine: Office Evaluation and Management of the Adult Patient
(7th edition, 2015)---page 997 |
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B*Q
发帖数: 25729 | 28 不学无术
整天空想
快赶上郭英森了
https://en.wikipedia.org/wiki/Solanine
Solanine is a glycoalkaloid poison found in species of the nightshade family
(Solanaceae), such as the potato (Solanum tuberosum) and the tomato (
Solanum lycopersicum). It can occur naturally in any part of the plant,
including the leaves, fruit, and tubers. Solanine has pesticidal properties,
and it is one of the plant's natural defenses. Solanine was first isolated
in 1820 from the berries of the European black nightshade (Solanum nigru... 阅读全帖 |
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d*b
发帖数: 21830 | 29 mR是air kerma,不是dose,或者effective equivalent dose(mSv). |
|
d*b
发帖数: 21830 | 30 因为笔记本里有很多金属部件，x光经过这些部件时会产生阴影和反光，但x光的
detector的contrast有限，如果笔记本跟其他部件混在一起，x光机要增加dose才能看
得清,但增加dose会导致detector的contrast降低。
总之，就是笔记本跟其他东西混在一起的话，一些电子密度比较低的物品会看不到，看
不清。所以要把笔记本单独放。 |
|
发帖数: 1 | 31 开医疗x光机和安检x光机有什么区别
各个方面？
: 因为笔记本里有很多金属部件，x光经过这些部件时会产生阴影和反光，
但x光的
: detector的contrast有限，如果笔记本跟其他部件混在一起，x光机要增
加dose
才能看
: 得清,但增加dose会导致detector的contrast降低。
: 总之，就是笔记本跟其他东西混在一起的话，一些电子密度比较低的物品
会看不
到，看
: 不清。所以要把笔记本单独放。
|
|
S*******l
发帖数: 4637 | 32 提醒过你了。既然你不去看自己引用的文章，我就替你把文章结论贴上来吧：
An extraordinarily large volume of animal data has been compiled to evaluate
the carcinogenic potential of glyphosate. The expected normal biological
variability for spontaneous tumor formation is reflected across this
extensive data set (Tables 20–23). However, no specific neoplasm stands out
as a consequence of glyphosate exposures. While some individual studies may
note an increase in a specific neoplasm at the high dose, the pooled data
fail to identify any... 阅读全帖 |
|
发帖数: 1 | 33 Mike
You might want to look into cracking down first on our own
pharmaceutical industry. That’s possibly where a great many opioid
addictions start with overprescribed prescription medications that are
opiate-based. Encouraging China to execute more people is probably not the
answer.
Donald J. Trump
.....considered to be the worst and most dangerous, addictive and deadly
substance of them all. Last year over 77,000 people died from Fentanyl. If
China cracks down on this “horror drug,” usi... 阅读全帖 |
|
发帖数: 1 | 34 joe tippens 总结的成功的病例：
June 25, 2019
1. Ewing Sarcoma with Mets to the brain and spine (too many tumors to count
). Started the protocol after having to stop chemo due to blood clots.
Started with a jump start of 9 straight days, then pulsed 3 on and 4 off for
14 weeks. Recent scan was an all clear NED ("no evidence of disease").
2. Esophogeal with Mets to the Liver. Started with a double dose 7 days a
week for 3 weeks and then the recommended 222mg dose 7 days a week for 9
weeks, then all ... 阅读全帖 |
|
发帖数: 1 | 35 07 Nov 2019
Just as the clamor about Biogen’s seeking FDA approval for aducanumab with
one positive Phase 3 trial started to die down, a Chinese company garnered a
regulatory thumbs-up for its drug, also with one Phase 3 trial. On November
2, Shanghai Green Valley Pharmaceuticals announced that China’s National
Medical Product Administration (NMPA) had conditionally approved GV-971, aka
oligomannate, for the treatment of mild to moderate Alzheimer’s disease.
Full approval, expected to come in sp... 阅读全帖 |
|
C*I
发帖数: 4736 | 36 一直在误导，现在还在误导。 说说明corona virus 不可以从蝙蝠直接传染给人，必须
经过一个中间宿体性的其它动物才能传染给人。所以，病毒发生后，就故意误导全国人
民去海鲜市场找证据，找其它野生动物的麻烦。 而且还是病毒所去找的，找完了还装
模做样化验呀，分离呀什么的。最后把责任全部推给了海鲜市场的动物。可是那种动物
，一直不敢说，说了其它相关已经在人就会去早那种动物监测。 所以压根不说，打马
虎眼。
事实上，早在2013 年，就是这个武汉病毒研究所，已经从来自云南的蝙蝠身上所携带
的corona virus中分离出第一株蝙蝠SARS类似样的冠状病毒的活病毒，其中就包含了类
似于S类型的基因。从而证实这株病毒能够使其接受和SARS病毒相同的受体，并能够感
染人的细胞。对此新发现，武汉病毒所还把它以武汉病毒研究所的英文简称命名“WIV1
”，以彰显这一发现的重要价值和属于自己第一个发现的巨大研究成果。这个成果刊载
于2013年11月的《自然》杂志。
就是说，从云南弄回来的这种蝙蝠所携带的类似于sars的 corona virus， 可以不经过
其它受体/宿体，而直接传染给人。 他们... 阅读全帖 |
|
C*I
发帖数: 4736 | 37 一直在误导，现在还在误导。 说说明corona virus 不可以从蝙蝠直接传染给人，必须
经过一个中间宿体性的其它动物才能传染给人。所以，病毒发生后，就故意误导全国人
民去海鲜市场找证据，找其它野生动物的麻烦。 而且还是病毒所去找的，找完了还装
模做样化验呀，分离呀什么的。最后把责任全部推给了海鲜市场的动物。可是那种动物
，一直不敢说，说了其它相关已经在人就会去早那种动物监测。 所以压根不说，打马
虎眼。
事实上，早在2013 年，就是这个武汉病毒研究所，已经从来自云南的蝙蝠身上所携带
的corona virus中分离出第一株蝙蝠SARS类似样的冠状病毒的活病毒，其中就包含了类
似于S类型的基因。从而证实这株病毒能够使其接受和SARS病毒相同的受体，并能够感
染人的细胞。对此新发现，武汉病毒所还把它以武汉病毒研究所的英文简称命名“WIV1
”，以彰显这一发现的重要价值和属于自己第一个发现的巨大研究成果。这个成果刊载
于2013年11月的《自然》杂志。
就是说，从云南弄回来的这种蝙蝠所携带的类似于sars的 corona virus， 可以不经过
其它受体/宿体，而直接传染给人。 他们... 阅读全帖 |
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C*I
发帖数: 4736 | 38 Published: 30 October 2013
Isolation and characterization of a bat SARS-like coronavirus that uses the
ACE2 receptor
Xing-Yi Ge, Jia-Lu Li, Xing-Lou Yang, Aleksei A. Chmura, Guangjian Zhu,
Jonathan H. Epstein, Jonna K. Mazet, Ben Hu, Wei Zhang, Cheng Peng, Yu-Ji
Zhang, Chu-Ming Luo, Bing Tan, Ning Wang, Yan Zhu, Gary Crameri, Shu-Yi
Zhang, Lin-Fa Wang, Peter Daszak & Zheng-Li Shi
Nature volume 503, pages535–538(2013)Cite this article
Abstract
The 2002–3 pandemic caused by severe acute respirator... 阅读全帖 |
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发帖数: 1 | 39 https://www.cdc.gov/flu/pandemic-resources/2009-pandemic-timeline.html
April 15
First human infection with new influenza A H1N1 virus detected in California.
April 17
Second human infection with the new influenza A H1N1 virus detected in
California about 130 miles away from first infection, with no known
connection to previous patient.
April 18
First novel 2009 H1N1 flu infections were reported by CDC to the World
Health Organization (WHO) through the U.S. International Health Regulations
Progra... 阅读全帖 |
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r***k
发帖数: 13586 | 40 你大概不知道什么叫standard of care。
These two trials will study the safety and efficacy of a five-day and a 10-
day dosing regimen of remdesivir in patients with severe COVID-19. About 400
patients will be randomized 1:1 to receive remdesivir 200 mg on the first
day, followed by 100 mg each day until day 5 or 10 as well as standard of
care.
The second study will look at the safety and efficacy of a five-day and 10-
day dosing strategy compared to standard of care. About 600 patients will be
randomized 1:... 阅读全帖 |
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发帖数: 1 | 41 止痛。
CBD as a Pain Reliever
CBD is popular for its effectiveness as a pain reliever, mostly due to its
anti-inflammatory effects. But anyone who's bought CBD from both a
respectable dispensary and a gas station counter can attest that efficacy
varies greatly from product to product. The effectiveness of CBD isolate
peaks at a "medium" dose and is generally less practical than full-spectrum
products made from the whole plant, with the entire range of cannabinoids—
including low levels of THC—and t... 阅读全帖 |
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W*****B
发帖数: 4796 | 43 Scientists Are Testing Nitric Oxide to Treat Coronavirus Patients
Scientists in Massachusetts, Italy, and elsewhere are experimenting with a
familiar medical treatment for the new problem of covid-19. They’ve begun
clinical trials meant to find out whether inhaled nitric oxide can save
people who are severely sick from the new coronavirus. This treatment might
even be used preventatively to keep health care workers infection-free.
Nitric oxide, or NO, is a key part of our biology (and not to be ... 阅读全帖 |
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T****r
发帖数: 22092 | 44 NRC chair Gregory Jaczko: "We believe that secondary containment has bee
n destroyed and there is no water in the spent fuel pool and we believe
that radiation levels are extremely high which could possibly impact the
ability to take corrective measures."
Mr Jackzo said the high radiation levels would make it very difficult fo
r workers to get near the reactor. "The doses they could experience woul
d potentially be lethal doses in a very short period of time," he said,
but added that the NRC's i... 阅读全帖 |
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T****r
发帖数: 22092 | 45 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 |
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p****t
发帖数: 11416 | 46 http://www.nationalterroralert.com/nuclear/
1 Megaton Surface Blast: Fallout
One of the effects of nuclear weapons detonated on or near the earth’s
surface is the resulting radioactive fallout. Immediately after the
detonation, a great deal of earth and debris, made radioactive by the blast,
is carried high into the atmosphere, forming a mushroom cloud. The material
drifts downwind and gradually falls back to earth, contaminating thousands
of square miles. This page describes the fallout pattern... 阅读全帖 |
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g********d
发帖数: 4174 | 47 【 以下文字转载自 Biology 讨论区 】
发信人: toptip (土翁), 信区: Biology
标 题: 今日中国谁最该做院士？by饶毅
发信站: BBS 未名空间站 (Mon Aug 22 00:43:41 2011, 美东)
【说明
首先抱歉，标题是为了吸引眼球。而且，读者可以看到，本文介绍的工作并不适合用院
士与否来评价，所以题目应该被批判。本文作为非正规博文一周后，题目将改回以下正
文的标题。正文目前作为征求意见稿，也将适当修改后发表于正式刊物，这相反于我平
时一般先正式发表后请科学网置于博客的习惯。
在科学界，我有双重身份：正在实践的科学家和对历史与现实的评论员。第二身份包括
我对科学史的兴趣。以前以介绍其他人研究过的科学史为主，近年对感兴趣较长的中国
近代科学史，我通过和北大医学部张大庆老师和研究生黎润红的合作，获得了一些史料
、正在写文章。如何呈现本文要讲的工作，也得益于“GSK终身生命科学成就奖”评奖
委员会的同事们的讨论，他们是鲁白、傅新元、马红、王小凡。
因为最近我第一身份出现一些情况，引起了出乎我意料的关注，为了避免继续过度解读
，而将其中无意义的部... 阅读全帖 |
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t**x
发帖数: 20965 | 49 After Fajardo left office last year, Bertone approached the then-interim
chief medical examiner, Dr. Lakshmanan Sathyavagiswaran, who agreed to
reopen the case. A pediatric toxicologist brought in as an expert by the
coroner’s office found that the fentanyl “was responsible for the death of
this patient” and that the dose was “not consistent with a therapeutic
dose for the management of pain and discomfort,” according to excerpts of
his findings quoted in a coroner’s report.
这个报导里面关键地方说不清：
1 验血结... 阅读全帖 |
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c****g
发帖数: 37081 | 50 注射死没药？AZ真是神奇的州！闲的蛋疼，按老夫意思，一针Sat. KCl, tec. grade；
立竿见影，倍儿灵。
FLORENCE, Ariz. – Facing a nationwide shortage of a lethal injection drug,
Arizona has taken an unusual step that other death penalty states may soon
follow: get their supplies from another country.
Such a move, experts say, raises questions about the effectiveness of the
drug. But it also may further complicate executions in the 35 states that
allow them, as inmates challenge the use of drugs not approved by federal
inspectors for use ... 阅读全帖 |
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