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全部话题 - 话题: scintilation
1 2 下页 末页 (共2页)
w******e
发帖数: 1187
1
能不能比如今天晚上加到scintillation vial里明天测readout?除了
正常的decay有没有其他问题?
//bow
k****l
发帖数: 279
2
For scintillation counter, if I use the method for 14C to count samples with
both 14C labeling and 3H labeling, does the 3H contribute to the counting?
Can the counter tell between different isotopes?
Thanks.
f*******e
发帖数: 8
3
14C and 3H windows for scintillation counting overlap a lot. 3H signal will
significantly affect 14C counts.

with
?
R*******1
发帖数: 13
4
来自主题: Macromolecules版 - 求科普 scintillation vials
哪位大侠给科普一下scintillation vials and vials的主要区别。
多谢。
b**k
发帖数: 3472
5
来自主题: Military版 - Potential Nobel-prize project on-going?
China Builds Mammoth Detector to Probe Mysteries of Neutrino Mass
Jane Qiu*
View larger version:
In this pageIn a new window
Download PowerPoint Slide for Teaching
Heavy hitter. China hopes its planned JUNO detector, 38 meters across, will
be the first to nail which of the three neutrino flavors is heavier or
lighter.
CREDITS: (INSET) IHEP; (SOURCE) M. BLENNOW ET AL. ARXIV 1311.1822 (2013)
BEIJING—It isn't easy to weigh a ghost. After neutrinos were hypothesized
in 1930, it took physicists 67 ye... 阅读全帖
f*****g
发帖数: 3086
6
来自主题: PhotoGear版 - 大侠们,那个Nikon的望远镜
我觉得我描述的那个现象就不光是scintilation(可能包涵scintilation的因素)
因为我看远处一个灯(防止飞机撞的那种)也是这样。这么近的距离(1-2mile)肯定
不至于有scintilation
scintilation从定义上来讲跟望远镜没有任何关系,就是大气扰动造成的,但是望远
镜放大了这一现象。
s**********s
发帖数: 7387
7
来自主题: PhotoGear版 - zen-ray中心明显可见紫边
scintillation跟望远镜有关系?
Scintillation or twinkling are generic terms for rapid variations in
apparent brightness or color of a distant luminous object viewed through a
~~~~~~~~~~~~~~~~~~~~
medium, most commonly the atmosphere (atmospheric scintillation).

and
f****r
发帖数: 5118
8
懂信号处理的帮忙分析一下 Wow Signal,俺以前懂,现在虾米了
这个东西说不定正往地球飞过来呢
http://en.wikipedia.org/wiki/Wow!_signal
The Wow! signal was a strong narrowband radio signal detected by Dr. Jerry R
. Ehman on August 15, 1977, while working on a SETI project at The Big Ear
radio telescope of The Ohio State University.[1] The signal bore expected
hallmarks of potential non-terrestrial and non-solar system origin. It
lasted for the full 72 second duration that Big Ear observed it, but has
not been detected again. Much attenti... 阅读全帖
b***y
发帖数: 14281
9
来自主题: Military版 - 方励之的学术成就全记录
既然有人争论方的学术水平,就上网搜了一下。应该说这个水平对于一个junior
faculty来说可以算是很牛B了,但是对于老方这种senior的已经搞了一辈子的人来说,
就只能算so so。不要说是院士,离aps fellow的级别也还差了不少。引用率最高的一
篇文章还是95年到了arizona之后跟老外合作的,被引118次,这也是方唯一一篇被引用
上百次的文章。可见方励之89之前确实没有做出过什么重要的工作,他的名声和地位绝
对是靠政治得来的,当然其中部分的也是80年在中国搞科普所得,必须承认科普工作也是
有重要的社会意义的。
(BTW,有人说你这个搜索未必完整。不错,确实不能保证100%毫无遗漏。但是我
用的search engine is THE search engine everybody in this community uses today.
So, if any article is not found by this search engine, sadly, it simply doesn't matter,
because no one would ever n... 阅读全帖
G******g
发帖数: 2275
10
来自主题: Military版 - 有人能做这个吗?
我们公司要买比较多量的scintillated CMOS sensor用于牙医X-射线照相。
要求下面技术指标:
900x1200像素,尺寸为 31x22毫米
1200x1600像素,尺寸为 31x37毫米
1440x1920像素,尺寸为 31x42毫米
国内有厂家能制造吗?我们想和国内供应商合作,能否提供联系方式。谢谢。
b***y
发帖数: 14281
11
来自主题: Military版 - 方励之的学术成就全记录
No. The search include his early works up to 1978. Here is the same list
sorted by year.
1) The Influence of Gravitation on the Vacuum State.
By Li-Zhi Fang.
Acta Phys. Sinica 27 ( 1978) 181-18.
2) THE STRUCTURE AND STABILITY OF THE ABNORMAL NEUTRON STAR.
By Li-Zhi Fang, Qin-Yue Qu, Zhen-Ru Wang, Tan Lu, Liao-Fu Luo.
Sci.Sin.22:187-198,1979.
3) Some Recent Developments in Astrophysics. (Talk).
By Li-Zhi Fang, A. Qadir, R. Ruffini.
In *Nathiagali 1980, Proceedings, Physics and Contemporary Needs... 阅读全帖
d*b
发帖数: 21830
12
这个违反NRC的regulation和federal law 10CFR part 20了吧? 用tritium是因为这个
要liquid scintillator才能测,一般海关只有GM detector。

recruitment
T**********e
发帖数: 29576
13
来自主题: Military版 - 冯诺依曼和爱因斯坦谁更nb?
冯诺依曼大脑本身就是一超级计算机,看过的书一字不差都记得,6岁就能心算8位数乘
除法。
Von Neumann had a very strong eidetic memory, commonly called 'photographic'
memory.Herman Goldstine writes: "One of his remarkable abilities was his
power of absolute recall. As far as I could tell, von Neumann was able on
once reading a book or article to quote it back verbatim; moreover, he could
do it years later without hesitation. He could also translate it at no
diminution in speed from its original language into English. On one occasion
I teste... 阅读全帖
s*x
发帖数: 8041
14
来自主题: Military版 - 发射了枚薛定谔的导弹
应该是增强型雷达,用伽马射线加强普通雷达探测距离和灵敏性。单光子探测本来就不
是新东西,就是scintillator 加光电倍增管
l****z
发帖数: 29846
15
来自主题: USANews版 - In Praise of a Do-nothing Congress
By Selwyn Duke
Here's a question: how can we expect to have small government if we condemn
Congress for not growing it?
It's always a disturbing experience when you're accosted with a picture of
Harry Reid, as I was upon logging on to Drudge Monday afternoon. But at
least his image bore a fitting caption: "MOST FUTILE EVER." I then clicked
the link and found myself at The Washington Times - normally a quite sane
organ of the media - and learned the meaning of the caption: the Times was
lamenti... 阅读全帖
g********2
发帖数: 6571
16
来自主题: USANews版 - 最近几周黑人袭警案件综述
A brief magical mystery tour of black on cop violence over the last few
weeks.
In Baltimore, one week ago, hundreds of black people took to the streets to
celebrate the life of the recently killed rapper Lor Scoota. He was best
known for celebrating guns, drugs, money and bitches in his videos and in
his life.
Eventually cops showed up: They were greeted with bottles and rocks and
threats and taunts when they suggested to the hundreds of black people that
destroying property and disobeying the l... 阅读全帖
q******g
发帖数: 390
17
Abergel, Rebecca J., Lawrence Berkeley National Laboratory, Berkeley, CA, “
Harnessing f㎡rbital Bonding through Precision Antenna Ligand Design for
Actinide Complexation,” selected by the Office of Basic Energy Sciences.
Braley, Jenifer C., Colorado School of Mines, Golden, CO, “Actinide N〥onor
Thermodynamics: Expanding the f〦lement Covalency Dialogue,” selected by
the Office of Basic Energy Sciences.
Cerfon, Antoine J., New York University, New York, NY, “High Performance
Equilibrium Solvers fo... 阅读全帖
l*h
发帖数: 4124
18
来自主题: Medicine版 - 求教关于妈妈的肺癌,长
regarding Tc-99m bone scan: it reflects bone-building activities. dark spots
are most commonly seen 1. after fracture, before healing is complete; 2.
primary bone tumors; 3. bone metastasis. other causes include chronic bone
infection and late stage of aseptic necrosis. certain arthritis can also
cause increased update at those sites.
all those diseases have some scintillation signatures on the scans. so a
careful reading can give a likely cause of the increased uptake. i am not an
expert in rea... 阅读全帖
l*h
发帖数: 4124
19
来自主题: Medicine版 - 求教关于妈妈的肺癌,长
regarding Tc-99m bone scan: it reflects bone-building activities. dark spots
are most commonly seen 1. after fracture, before healing is complete; 2.
primary bone tumors; 3. bone metastasis. other causes include chronic bone
infection and late stage of aseptic necrosis. certain arthritis can also
cause increased update at those sites.
all those diseases have some scintillation signatures on the scans. so a
careful reading can give a likely cause of the increased uptake. i am not an
expert in rea... 阅读全帖
G******g
发帖数: 2275
20
来自主题: StartUp版 - 有人能做这个吗? (转载)
【 以下文字转载自 MedicalDevice 讨论区 】
发信人: GouSheng (水果王), 信区: MedicalDevice
标 题: 有人能做这个吗? (转载)
发信站: BBS 未名空间站 (Sat Mar 17 08:32:43 2012, 美东)
我们公司要买比较多量的scintillated CMOS sensor用于牙医X-射线照相。
要求下面技术指标:
900x1200像素,尺寸为 31x22毫米
1200x1600像素,尺寸为 31x37毫米
1440x1920像素,尺寸为 31x42毫米
国内有厂家能制造吗?我们想和国内供应商合作,能否提供联系方式。谢谢。
s****l
发帖数: 10462
21
IPO Market Unlocking for 'Omics-related Companies, but It's 'Anything but
Robust'
December 30, 2010
Type size:
-
+EmailPrinter-friendly versionRSS FeedBy Tony Fong
NEW YORK (GenomeWeb News) – For most of 2010, the IPO market froze out the
life science tools and 'omics market, but by the end of the summer, there
were signs that the public markets may be slowly welcoming firms operating
in the space, as a handful of public offerings ended a cold snap.
The IPO market for 'omics firms has been a gri... 阅读全帖
p********r
发帖数: 1980
22
BREAKING NEWS: SEC is investigating why S&P didn't downgrade US previously
under any white presidents while they downgraded US credit rating as soon as
it got its first black president. For example, under Ronald Reagan, the US
credit limit was increased 17 times. And most recently, during Bush
presidency, the United States debt limit was increased from $5.95 trillion
to $9.815 trillion. But as soon as the US got the first black president and
asks for a debt ceiling increases for the first time, ... 阅读全帖
w********e
发帖数: 277
23
来自主题: Stock版 - GTAT
No wonder Apple pulls the plug...
CTO, INDIAN!??? Before GTAT, only professional position is visiting scholar
in Hsinchu Univ of Taiwan?!!
Are you kidding me?
==========================
Dr. P.S. Raghavan
Chief Technology Officer
Dr. P.S. Raghavan, is GT Advanced Technologies’ chief technology officer .
Raghavan brings over 23 years of industrial and academic experience in
Crystal Growth Instrumentation, Crystal Growth of semiconducting (Silicon,
III-V and II-VI) materials, Oxides, NLO materials... 阅读全帖
m**********g
发帖数: 44
24
来自主题: Immigration版 - 光学材料 求审稿啊
各位版上大神,
LZ 我从去年这个时候开始各处向编辑求审稿,大部分没有回信。少部分认识我老板说
是把我good qualify. 后来又催了,到现在都一年了,一个都没有。
后来审的几个还是 求熟人推荐的。
目前就审过 3个,来自 Optics Letters, Optical Express, Journal of Materials
Science & Technology.
研究领域: Optical materials, Radiation detector, Luminescence, Crystal
growth, Semiconductor and scintillation materials, laser materials 以及各种
材料性能表征。
麻烦有不想审稿的大神们,可以推荐我啊。。本人非常感谢🙏呢。
如需要我的信息,站内联系或email.
[email protected]/* */
l*********u
发帖数: 19053
25
到1万啦
Dear Supporters,
Thank you for your support, We've reached 10K milestone!
There are 2 things worth mentioning to you:
1. There will be a multi-city protest on this Saturday 11/9/2013, please
visit this page for details in your city:
http://www.weidb.com/voice/index.php?title=Main_Page
You can find thought points, posters, flyers, complaint letter from
political organizations, photo and videos for past protests here:
http://sites.google.com/site/boycottjimmykimmelandabc/resources
2. Please s... 阅读全帖
d*b
发帖数: 21830
26
来自主题: Michigan版 - 提醒一下大家最近MI的核泄漏
Tritium泄漏你的geiger counter是测不到的,要用liquid scintillation counter才
能测。
d*b
发帖数: 21830
27
来自主题: Michigan版 - 提醒一下大家最近MI的核泄漏
前几年NRC发现的一个accident就是,某公司招了个女人做radiation worker, 例行尿
检做liquid scintillation counting发现残留的Tritium,然后查她小孩和男人,发现
都有trace,最后调查employment history发现10年前在某公司接触过Tritium.
Tritium事故是RSO最不愿意听到的,你一个大学的nuclear chemistry lab要发生
Tritium污染事故的话,这个lab那之整层楼都只能封存了。Tritium的decay energy非
常低,一般的仪器都没法测,但能量低,biological half life短并不等于危害小,
Tritium这玩意属于internal dosimetry, 跟传统的dosimetry不一样。你说1MeV的
electron和0.02MeV的electron,对DNA那个危害更大?
建议你找Cember的书去学习学习。
r*******4
发帖数: 1505
28
来自主题: Minnesota版 - 还需7911个签名,加油啊!
Dear Supporters,
Thank you for your support, We've reached 10K milestone!
There are 2 things worth mentioning to you:
1. There will be a multi-city protest on this Saturday 11/9/2013, please
visit this page for details in your city:
http://www.weidb.com/voice/index.php?title=Main_Page
You can find thought points, posters, flyers, complaint letter from
political organizations, photo and videos for past protests here:
http://sites.google.com/site/boycottjimmykimmelandabc/resources
2. Please spend ... 阅读全帖
S*******h
发帖数: 7021
29
【 以下文字转载自 USANews 讨论区 】
发信人: gemini2012 (双子AB), 信区: USANews
标 题: 最近几周黑人袭警案件综述
发信站: BBS 未名空间站 (Sun Jul 10 13:34:12 2016, 美东)
A brief magical mystery tour of black on cop violence over the last few
weeks.
In Baltimore, one week ago, hundreds of black people took to the streets to
celebrate the life of the recently killed rapper Lor Scoota. He was best
known for celebrating guns, drugs, money and bitches in his videos and in
his life.
Eventually cops showed up: They were greeted with bottles and r... 阅读全帖
S*******h
发帖数: 7021
30
来自主题: PHILADELPHIA版 - 最近几周黑人袭警案件综述 (转载)
【 以下文字转载自 USANews 讨论区 】
发信人: gemini2012 (双子AB), 信区: USANews
标 题: 最近几周黑人袭警案件综述
发信站: BBS 未名空间站 (Sun Jul 10 13:34:12 2016, 美东)
A brief magical mystery tour of black on cop violence over the last few
weeks.
In Baltimore, one week ago, hundreds of black people took to the streets to
celebrate the life of the recently killed rapper Lor Scoota. He was best
known for celebrating guns, drugs, money and bitches in his videos and in
his life.
Eventually cops showed up: They were greeted with bottles and r... 阅读全帖
h*****a
发帖数: 105
31
里面有一个网站链接。http://www.weidb.com/voice/index.php?title=Main_Page, 觉得很有用,先分享一下
Dear Supporters,
Thank you for your support, We've reached 10K milestone!
There are 2 things worth mentioning to you:
1. There will be a multi-city protest on this Saturday 11/9/2013, please
visit this page for details in your city:
http://www.weidb.com/voice/index.php?title=Main_Page
You can find thought points, posters, flyers, complaint letter from
political organizations, photo and videos for past protests here:
http... 阅读全帖
G**Y
发帖数: 33224
32
最后30几秒被反超。看似残酷,其实也不然。
打海豚,前面领先的,最后一节被追成14:14。结果立马,Washington kick off
return TD。这是多好的运气呀,没得说了吧?被Tyanehill搞成21平。这还不说,自己
进攻不力。还剩1:30几秒,被人家踢一个FG搞定。这场失败的影响是很深远的。赢了
这场兴许就是小组第一了。
打Lions,记不清细节了。总之也是费劲巴拉板回比分了。最后时间被Stafford搞定。
所以偶然中其实是必然。
再看Falcons,也不是运气。今年这至少是第三次winning field goal:
打Panthers
“Carolina downed Brad Nortman’s punt down at the 1-yard line with 59
seconds left. Atlanta had no timeouts.
...
Ryan’s unlikely 59-yard pass to Roddy White in the closing seconds helped
set up a game-winning field g... 阅读全帖
B*****e
发帖数: 9375
33

This is like make-up sex after a big fight or short separation, which,
conjugal sex aside, is the most scintillating of its kind!
D***h
发帖数: 148
34
it is really a scintillation to hear that mindset still is a factor in the
game of Beamer ball

b
Bob
in
t
o
in
z*a
发帖数: 1681
35
来自主题: Soccer版 - 推荐一个足球阵型网站
http://sharemytactics.com/
不知道有人在这里提过没?
再来一篇菲儿内维尔在BBC的一篇分析本届世界杯的文章
http://www.bbc.co.uk/sport/0/football/28221119
World Cup 2014: Attacking wing-backs make for open tournament
Argentina's win over the Netherlands in Wednesday's semi-final did not live
up to the high standards in entertainment set in this World Cup.
But this will still be a tournament remembered for lots of goals and
exciting games.
People have pointed at poor defending as a reason why there have been so
many goals - 167 so far -... 阅读全帖
l*****n
发帖数: 2446
36
一早起来,发现外面漫天飞雪,于是宅在家里啃 Noel Tyl 的那本小红砖 Synthesis &
Counseling in Astrology
Tyl 非常注重月亮星座,他认为 sun 是一种能量,简单说就是可以燃烧的汽油。
而真正为之服务的是月亮的 reigning need
我把 书里面的 Sun-moon Blend Concept Chart 全部一个字一个字敲上来,给大家看
看吧
Sun-moon Blend Concept Chart
The energy of the Sun
Aries
The energy to lead, to exert force
Taurus Energy to build and maintain
Gemini Energy to diversify, to communicate
Cancer Energy to create security
Leo Energy to be recognized
Virgo Energy to refine, to discriminate
Libra ... 阅读全帖
l*****n
发帖数: 2446
37
认识 Loren 的时间已经超过13年,感谢美好的水月三分相赐予我对于数字的特别优异的记忆力,以至于我到现在还可以确切的记得和 Loren 初遇的日子是1997年10月4日,那是一次校际联谊活动。
如果没记错的话,那次他穿的是格子的衬衣,非常清爽的书生气息。
其实高一到高二那段时间,即使在没有手机这类通讯设备的情况下,我们似乎还是会有见面的机会,甚至在放学回家的路上也会不期而遇。
包括本科四年,虽然不在同一所大学,却还是很相邻,会偶尔找个地方喝杯茶。
但是2004年6月份以后,我们就再也没有见过了。
他先去了伦敦,然后又搬到了加拿大,而我大多数时间都在美国境内。
所以,即使是认识超过13年的老同学,却还是觉得有些陌生感了。
由于出生时间不详,我没法判断 Loren 的上升星座,但是根据他最初给人的非常干净清爽的气质这点来看,很有可能是上升处女——
同时,似乎也满足上升处女脸部清秀,尖下巴,骨架小同时又很藏肉的身体特质。
对于根据相貌或者第一印象来判断上升星座的这个方式,我还是有些茫茫然。
毕竟手动调整出生盘的时候,只有月亮星座在变化、不断在出相位和入相位,而作为旁观者,对于命盘主月亮所... 阅读全帖
d********h
发帖数: 2275
38
DEARRING WAS USED,PANDANT IS NEW.YOU MAKE REASONABLE OFFER!
https://www.jewelclub.com/images/jewelry/j45904aml-sc_h.jpg
j4590
Only one piece remaining!
Scintillating Amethyst And Diamond Accent Pendant And Earring Set In 14K
Gold with a Dazzling 14K Gold 18 Inch Venetian Box Chain
Product Details
Retail Value: $649.00
JewelClub Price: $181.41
Product Details
AMETHYST
Shape Description BRIOLETTE
Size 10 x 8mm
Stone Weight (each) 4.1
Stone Quantity 3
CTTW 12.30
Diamond: SINGLE CUT R
r********m
发帖数: 593
39
来自主题: Exchange版 - 转些香水,及body care之类的小样
Perfumed body care 潤肤乳,沐浴乳类
图1
===Acqua Di Parma===
Body cream
00210881, 00120962
Size 20mL
Qty 2
Price 1.00 each
Bath and shower gel
00121092
Size 20mL
Price 1.00
===Burbbery=== sold out
===BVLGARI===
BVLGARI Eau parfumee au the vert Both shower gel
P11812VA
Size 75mL
Value 14.00
Price 1.00
Mon Jasmin Noir scintillating body lotion
20B22AN1
Size 30mL
Price 1.00
----------------------------------------------------------------
图2
===CK===
Beauty Luminous ... 阅读全帖
c**m
发帖数: 1632
40
来自主题: LeisureTime版 - 梦绕魂牵的洛杉矶
Snow is the real problem, otherwise, we have sun, spring and summer,
sparkling sea and scintillating simmering stuff all year around... :)

久后就养成在包里放1支lotion的习惯了 -__- 还有LA的气候,只有沿着海边那么窄窄
的一条是冬暖夏凉非常舒爽的,稍微离开海几迈就不行了,比如夏天去中国城买菜就觉
得很热 =,=b
。当然这个跟使用率有关系,车多,路坏得快嘛!
去Austin的路上rest area都是室内有空调的,布置得很好。不过这里的路感觉有点
overdesign了,几条freeway交叉点经常弄得很复杂。离我家比较近的一个地方,就2条
freeway相交嘛,竟然弄出5层的ramp。。我就不明白了 !#@$%^$#@
s*****r
发帖数: 1745
41
she is also scintillating in "Suspicion" , the very next one with Hitchcock
after the big success of Rebecca.
s**********s
发帖数: 7387
42
来自主题: PhotoGear版 - 大侠们,那个Nikon的望远镜
星星的scintilation跟望远镜到底有没有关系?
a*****s
发帖数: 2663
43
来自主题: PhotoGear版 - zen-ray中心明显可见紫边
Sounds like scintillation, I guess lz should order those expensive ones and
compare. Maybe he has higher than usual standard/expectation of purple
fringe to begin with. Let's see whether the second copy is bad too.
e**s
发帖数: 513
44
来自主题: PhotoGear版 - <转帖>小议福岛核泄漏事件
请问Geiger counter, scintillation counter, 还有前面有人提到的dosimeter有什么
区别?要买哪个?
s***l
发帖数: 2236
45
scintillation
不过可以做些wavefront compensation.
c**m
发帖数: 1632
46
来自主题: Memory版 - 唉, 美人效应啊
yes... I saw her photo before, she had large eyes, long hair and she was
walking on the meadow of a summer morning. The breeze slightly blow her hair
sideways and that air of zephyr simply revealed her scintillating spirit of
humor and happiness....
//ox-lig, please don't hit me... run. :)
p*********y
发帖数: 1617
47
来自主题: Literature版 - Moonlight by Eugene O'Neill (转载)
【 以下文字转载自 little_grass_home 俱乐部 】
发信人: poetsociety ( ), 信区: little_grass_home
标 题: Moonlight
发信站: BBS 未名空间站 (Wed Apr 8 06:20:44 2009)
Silver spider,
Brooding
On the blue wall of the infinite,
What passion makes you pale?
You have caught the stars
In your web of moonbeams.
You have sucked from them
Their vibrant scintillations.
Now they hang enmeshed,
Cosmic gnats,
Bloodless,
Still trembling a little.
What passion makes you pale?
The sea loves you.
She has hushed
All the dancing waves to sleep
L****o
发帖数: 1642
48
来自主题: Poetry版 - 四月是National Poetry Month
每年四月是National Poetry Month, 是由The Academy of American Poets于1996年
发起的。在这个月,全国各地会有很多图书馆、学校及其他机构举办诗歌讲座、朗诵等
活动,比如我见过我们这儿当地公共图书馆就有诗人开过介绍聂鲁达和其他诗人作品的
讲座。poets.org上有更多信息。
我们这儿的当地报纸上也有一些关于诗的文章。下面这篇是个诗人和文学教授写的教普
通读者如何阅读理解诗歌的文章,在昨天的报纸上,挺有意思的。
摘要一下:没有必要对诗有一种本能的排斥,不要预先假定自己读不懂诗。诗人可能会
用一些看似荒唐无理的语言,来促使读者用不同的眼光看世界。如果一首诗一读就全懂
,没有任何神秘性,不能促人思考,也不一定就好。诗要慢慢读,多读几遍,即使第一
遍没读懂,并不意味着这是首烂诗,真正好的诗,每读一遍,就会给人更多理解,更多
发现,意味无穷。
Understanding Poetry
By Joseph Campana
Houston Chronicle, April 25, 2012
I'm not sure I understand the... 阅读全帖
s*****t
发帖数: 1994
49
来自主题: Astronomy版 - 科学家开发出寻找暗物质新武器
新浪科技讯北京时间10月2日消息,据美国《连线》杂志报道,暗物质被认为是宇宙研
究中一个最具挑战性的课题,虽然科学家从未发现暗物质存在的直接证据,但并不妨碍
他们继续寻找。西班牙萨拉戈萨大学物理学家爱德华多·亚巴塞斯(Eduardo Abancens)
领导的一个研究小组日前设计出新型暗物质探测器,外形酷似科幻大片《黄金罗盘》的
道具。
亚巴塞斯说:“即便我们不知道暗物质是什么东西,但我们很清楚暗物质的行为特
征。”据物理学家介绍,目前他们只能对宇宙中大约5%的暗物质进行探测。物理学家是
根据遥远星系的行为探知暗物质存在的。遥远星系的活动方式只能用肉眼看不到的物质
质量产生的引力来解释。根据物理学家的估计,宇宙中约 20%的物质是暗物质,75%的
物质是暗能量。暗能量是驱动宇宙加速膨胀的斥力。
亚巴塞斯团队开发的暗物质探测器名为“闪烁辐射热测量仪”(scintillating
bolometer),外形酷似科幻大片《黄金罗盘》中的道具,核心是一个纯度极高的水晶体
,可以传导暗物质粒子撞击其原子核时产生的能量。为避免受宇宙射线干扰,辐射热测
量仪表面覆盖一层铅,保存于地下,上面是厚达半英
w******e
发帖数: 1187
50
又来请教了:话说我用filter binding assay测我aptamer pool跟target
protein的kd,测出的signal最高只有upper limit(probe不加protein不过
filter直接加到scintillation vial里的读数)的20%。。。虽说protein
理论上可能有一部分被wash off吧,但80% loss也太离谱了吧。。。但
signal确实是plateau了,能fit出kd来(还挺好hiahia)。
请问牛人这种现象可能正常吗?btw我根本没敢多洗,加了mixture之后就
洗了1次1ml,不过neg control挺低的了。
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