由买买提看人间百态

topics

全部话题 - 话题: nuclei
1 2 3 下页 末页 (共3页)
g*********3
发帖数: 177
1
来自主题: Biology版 - 如何分离ER和nuclei
在做和细胞核有关的蛋白实验时,很多实验方案都有nuclei isolation这一步,老板说
ER和nuclei连在一起,很多时候细胞器和核分离的不是很好,特别是有细胞fix的情况
下。
想知道大家是怎么做的,ER的蛋白太多,对实验的干扰挺大.
先谢谢各位了。
d****e
发帖数: 13
2
来自主题: Biology版 - Have anyone see bubbles in nuclei?
What is this? I transfected Hela cells with p27 fused to GFP by calcium
phosphate method. The GFP fluorescence localized to nuclei but there a few
bright spots in the nuclei corresponding to the bubbles under bright fields.
Is this normal? are those spots auto fluorescent?
G********e
发帖数: 528
3
来自主题: Biology版 - Giant cardiac nuclei
说一个可能性很大但却不是你希望的原因
Cre蛋白在诱导之后对nuclei产生的毒性,具体可能是DNA损伤或重组
你有没有WT(or f/+); MerCreMer做对照?
有的话,对照组又没有这种情况的话,这种可能性很低
没有的话,这种可能性非常非常高
f**d
发帖数: 768
4
来自主题: Neuroscience版 - eBook: From computer to brain
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
g*********5
发帖数: 2533
5
来自主题: Biology版 - 核蛋白的Co-IP的 Protocol
Isolation of nuclei for the co-IP and whole ChIP protocols is based on the
methods of Gendrel et al. (2002, 2005), Johnson et al. (2002), and Nelson et
al. (2006).
METHOD
For extraction and co-IP of nuclear proteins, see Steps 1-39 (Fig. 1). For
the ChIP procedure, see Steps 40-69 (Fig. 2).
Figure 1.
View larger version:
In this page
In a new window
Figure 1.
Flowchart for the timeline and organization for co-IP of nuclear proteins
from Arabidopsis seedlings.
Figure 2.
View larger versio... 阅读全帖
C*I
发帖数: 4736
6
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
7
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
8
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
b*****l
发帖数: 9499
9
赞 boos :)
建议先用 DAPI image 来做 thresholding 找出每个 nuclei,可能还需要做
segmentation 来区分开相邻的 nuclei,这个用 watershed 比较好。然后用 nuclei
的结果做 mask 来处理 TUNEL 的图像(如果背景干扰比较大,而且背景跟信号有叠加
,可以先去一遍背景),就可以得出每个 nucleus 里的 TUNEL 信号来。把这 1000+
nuclei 的 TUNEL 信号统计起来画成一个分布,然后就可以用分峰软件准确地找到两个
峰,算出面积,就可以很准确地得出 apoptosis rate。同时,也可以找到最佳的
threshold 点来分 TUNEL 信号,这样就可以把原始图上的每个细胞核都标为 pos 或者
neg。这样做的好处是根据分峰结果可以算出两类错误分别是多少。
这个流程的每一步,都是很规范很常用的工具,可以 google 到 ImageJ 的代码。不知
道有没有人集成过,反正我到最后还是懒得集成了。

staining
see
E*********s
发帖数: 93
10
来自主题: Biology版 - 怎么区分老鼠和人的细胞?
DAPI staining. Human cell nuclei and mouse cell nuclei look different. Mouse
nuclei has punctate staining inside the nuclei.
h*******o
发帖数: 1114
11
The energy of most stars results from the fusion of hydrogen nuclei to
helium nuclei. The temperature of the interior of the sun (a typical star)
is 15×10^6K. At this temperature, virtually no nuclei have enough kinetic
energy to overcome the electrostatic repulsion between nuclei and approach
each other closely enough to undergo fusion. Therefore, when Eddington
proposed in 1920that nuclear fuion is the source of stellar energy, his idea
was rejected. Explain why fusion does occur in stars, des
m*********a
发帖数: 3299
12
来自主题: USANews版 - 杀光亚裔,对美国屁影响没有
Jews .2% of world population, 20% of all Nobel prices, 40% of USA nobel
price, won more than 160 nobels.
All Asian are junk compare to Jewish people in your standard.
Literature[edit source | edit]
Year Laureate Country Rationale
1927 Bergson-Nobel-photo.jpg Henri Bergson[9][10] France "in
recognition of his rich and vitalizing ideas and the brilliant skill with
which they have been presented"[11]
1958 Boris Pasternak cropped.jpg Boris Pasternak[9][10] Sov... 阅读全帖

发帖数: 1
13
Before I start, I’d like to make my point crystal-clear. This will be
serving as my
last post on this subject and I am not interested in any college-level
discussion.
How soon do you want to close your statistical data collection? I guess
this time window of reproducibility will be determined by the journal and
the whole scientific community. Dr. Han’s fate does not concern me from
the beginning. However, I do care the quality of arguments against Dr. Han’
s
paper written up by some green-hand... 阅读全帖
c****n
发帖数: 220
14
来自主题: Physics版 - 谁能介绍介绍小波尔
http://en.wikipedia.org/wiki/Aage_Bohr
Physics
By the late 1940s it was known that the properties of atomic nucleus could
not be explained by the then-current models (such as the liquid drop model
developed by Niels Bohr amongst others). The nuclear shell model, developed
in 1949, allowed some additional features to be explained, in particular the
so-called magic numbers. However, there were also properties which could
not be explained, including the non-spherical distribution of charge in
certa... 阅读全帖
A*G
发帖数: 256
15
来自主题: Medicalpractice版 - 没有教不会的学生, 只有教不好的老师
WIKI:
The following structures are, or have been considered to be, part of the
limbic system:
Hippocampus and associated structures: Hippocampus:[4][5][6] Required for
the formation of long-term memories and implicated in maintenance of
cognitive maps for navigation.(according to this article, this part was
obviously changed, so...)
Amygdala:[4][5][6] Involved in signaling the cortex of motivationally
significant stimuli such as those related to reward and fear in addition to
social functions su... 阅读全帖
b********n
发帖数: 38600
16
来自主题: Military版 - Ebola 可能空气传染
Can Ebola Go Airborne?
http://www.forbes.com/sites/scottgottlieb/2014/09/03/can-ebola-
"The United States Army Medical Research Institute of Infectious Diseases
conducted a monkey to monkey Ebola study in December 1995, published in The
Lancet, Vol 346. Several rhesus monkeys were infected with Zaire Ebola by
intramuscular injection while three control rhesus monkeys were kept in
cages separated 10 feet from the infected monkeys. All of the injected
monkeys died of Ebola by day 13 and 2 out of 3... 阅读全帖
l*h
发帖数: 4124
17
the procedure you are asking about is deep brain stimulation (DBS). there
are certain nuclei that can be stimulated to improve the performance of
Parkinson's patients. the effects of some of these nuclei can be explained
by what we understand of the neuronal circuits; some we don't understand yet
, that their choice was based on previous exploratory efforts.
you need a functional neurosurgeon to do this. many major medical centers
have at least one functional neurosurgeon.
the other procedures i... 阅读全帖
l*h
发帖数: 4124
18
the procedure you are asking about is deep brain stimulation (DBS). there
are certain nuclei that can be stimulated to improve the performance of
Parkinson's patients. the effects of some of these nuclei can be explained
by what we understand of the neuronal circuits; some we don't understand yet
, that their choice was based on previous exploratory efforts.
you need a functional neurosurgeon to do this. many major medical centers
have at least one functional neurosurgeon.
the other procedures i... 阅读全帖
G****a
发帖数: 10208
19
【 以下文字转载自 Biology 讨论区 】
发信人: toptip (土翁), 信区: Biology
标 题: 从骨科医生到诺贝尔奖-山中伸弥的研究历程
发信站: BBS 未名空间站 (Wed Oct 17 00:04:30 2012, 美东)
引言
山中伸弥(Shinya Yamanaka)获得诺奖已经有几天了,虽然两年前在听完他的讲座后
我兴致很高地写了两篇文章,这些天我却没有多少动力再写一篇完整的文章来介绍他的
工作。
我一直对中国现在还盛行的规划性科研,应用导向型科研耿耿于怀。这些所谓的重大项
目在立项的当初对目标/前景写得宏大无比,之后却通常草草收场。如果那些重大项目
真的能实现立项当初的用意,那诺贝尔奖早就在中国遍地开花了。广大科研人员都觉得
这种运行模式是一个笑话,饶毅、施一公等大牛也重炮轰击,但是分钱游戏还在进行着
。而公众,包括相当一部分科研人员也并不了解科研的自身规律,总是一再地问做基础
研究有什么用。
Shinya Yamanaka的成功是典型的小实验室自由探索的成功。他的成功再一次提示,有
相当多的科学突破是不可预测的。如果中国有大批优质的小实验室得到稳... 阅读全帖
c********r
发帖数: 189
20

其实我要检测的是nuclear里的chromatin bound protein,所以histone H3比较好。我
在裂解之前,先count细胞,然后裂解细胞膜后,count nuclei (这时候nuclei可以被
stain)至少90%的细胞裂解了而且保有完整的细胞核。结果cyto里还有Histone H3,于
是我就无语了
c********r
发帖数: 189
21

其实我要检测的是nuclear里的chromatin bound protein,所以histone H3比较好。我
在裂解之前,先count细胞,然后裂解细胞膜后,count nuclei (这时候nuclei可以被
stain)至少90%的细胞裂解了而且保有完整的细胞核。结果cyto里还有Histone H3,于
是我就无语了
g*********3
发帖数: 177
22
来自主题: Biology版 - 求助---关于nuclear protein
关于DNA-protein complex的
一般的策略是crosslink---nuclei isolation---Sonication---IP
实验室的师兄说crosslink后细胞比较像jelly,isolation的效率可能不好。建议可以
先cell lysis/nuclei isolation---crosslink,这样可能会损失一些DNA-Protein
complex,大家有见过第二种方法吗?可否给个链接,谢谢。另外,第一种isolation的
效率怎样。
谢谢各位。
l**********1
发帖数: 5204
23
En
温习一下 其十一年前的豪言 啊
中国科学:显著的发展和严峻的挑战
——历史演变和现状比较
于2001年12月4日 1st version
饶毅
本文在简要回顾中国科学史的基础上,介绍一些近年研究的内容,肯定中国
科学令人乐观的进步,并讨论可能的意义。同时也指出,中国优秀论文总量仍不
到世界的百分之一,低于中国经济在世界所占的百分比、也不能适应中国持续发
展的要求。中国科学的规模需要相当程度的扩大、质量有待进一步提高。中国科
技还存在面临许多问题和挑战。
中国科学历史上的优秀例子
一个国家科学研究状况可以近似地由发表论文的情况所反映。以下,本文主
要从生命科学的研究来讨论中国科学的情况,一方面这是我有一定判断力的领域,
另一方面生命科学是科学技术最重要的组成部分之一,可以反映科学主流。讨论
中国论文发表情况前,先谈两个背景:中国科学的历史情况,优秀科学和著名杂
志的关系。
奠定中国生命科学研究是二、三十年代协和医学院生理系林可胜和生化系吴
宪。他们不仅自己研究出色,而且培养和带领了其他研究者。林可胜在胃肠道生
理和神经生理有优秀工作。1942年,他在中国当选为美国科学院外籍院士,是... 阅读全帖
l**********1
发帖数: 5204
24
来自主题: Biology版 - 2012年诺贝尔生物医学奖
This Year Nobel prize original contribution Oxford defeated LMB MRC of
Cambridge
pls refer
Professor Sir John Gurdon, FRS, was educated at Eton, where he did Classics,
having been advised that he was unsuited for science. He was accepted at
Christ Church, Oxford on Classics entrance, but switched to Zoology (Head of
Department, Sir Alister Hardy). He did he Ph.D. with Michael Fischberg on
nuclear transplantation in Xenopus. He obtained the first clone of
genetically identical adult animals. He d... 阅读全帖
O******e
发帖数: 4845
25
Press Release
2012-10-08
The Nobel Assembly at Karolinska Institutet has today decided to award
The Nobel Prize in Physiology or Medicine 2012
jointly to
John B. Gurdon and Shinya Yamanaka
for the discovery that mature cells can be reprogrammed
to become pluripotent
Summary
The Nobel Prize recognizes two scientists who discovered that mature, specia
lised cells can be reprogrammed to become immature cells capable of developi
ng into all tissues of the body. Their findings have revolutionised our... 阅读全帖
t****p
发帖数: 1504
26
引言
山中伸弥(Shinya Yamanaka)获得诺奖已经有几天了,虽然两年前在听完他的讲座后
我兴致很高地写了两篇文章,这些天我却没有多少动力再写一篇完整的文章来介绍他的
工作。
我一直对中国现在还盛行的规划性科研,应用导向型科研耿耿于怀。这些所谓的重大项
目在立项的当初对目标/前景写得宏大无比,之后却通常草草收场。如果那些重大项目
真的能实现立项当初的用意,那诺贝尔奖早就在中国遍地开花了。广大科研人员都觉得
这种运行模式是一个笑话,饶毅、施一公等大牛也重炮轰击,但是分钱游戏还在进行着
。而公众,包括相当一部分科研人员也并不了解科研的自身规律,总是一再地问做基础
研究有什么用。
Shinya Yamanaka的成功是典型的小实验室自由探索的成功。他的成功再一次提示,有
相当多的科学突破是不可预测的。如果中国有大批优质的小实验室得到稳定的资助,那
么类似的科学突破就会随机但是必然地产生。从这种意义上讲,展示Shinya Yamanaka
在研究过程中的这种随机性和必然性,向公众科普科研活动是如何进行的,是值得我花
一点时间的。
解析Shinya Yamanaka发现诱导干细胞(iPS... 阅读全帖
t****p
发帖数: 1504
27
引言
山中伸弥(Shinya Yamanaka)获得诺奖已经有几天了,虽然两年前在听完他的讲座后
我兴致很高地写了两篇文章,这些天我却没有多少动力再写一篇完整的文章来介绍他的
工作。
我一直对中国现在还盛行的规划性科研,应用导向型科研耿耿于怀。这些所谓的重大项
目在立项的当初对目标/前景写得宏大无比,之后却通常草草收场。如果那些重大项目
真的能实现立项当初的用意,那诺贝尔奖早就在中国遍地开花了。广大科研人员都觉得
这种运行模式是一个笑话,饶毅、施一公等大牛也重炮轰击,但是分钱游戏还在进行着
。而公众,包括相当一部分科研人员也并不了解科研的自身规律,总是一再地问做基础
研究有什么用。
Shinya Yamanaka的成功是典型的小实验室自由探索的成功。他的成功再一次提示,有
相当多的科学突破是不可预测的。如果中国有大批优质的小实验室得到稳定的资助,那
么类似的科学突破就会随机但是必然地产生。从这种意义上讲,展示Shinya Yamanaka
在研究过程中的这种随机性和必然性,向公众科普科研活动是如何进行的,是值得我花
一点时间的。
解析Shinya Yamanaka发现诱导干细胞(iPS... 阅读全帖
l**********1
发帖数: 5204
28
Firstly stable isotope 15N label of that protein then inert cell,
after 72 hrs
add synthetic macromolecules to mimic the crowded cytoplasm
next extract nuclei protein
the residue is cytoplasm protein
next do mass spectrometry individually
References:
1,
//www.isotope.com/uploads/file/prot_brochure_lysineupdatelores.pdf
2,
PLoS One. 4:e7560. |(2009)
Isolation of cell nuclei using inert macromolecules to mimic the crowded
cytoplasm.
http://www.ncbi.nlm.nih.gov/pubmed/19851505
g*********3
发帖数: 177
29
正常。SDS is pretty sensitive to salt and Temperature.
the optimal temperature we have optimized for 1%sds sonication is 17 degree.
Others have reported this too.
Even if people claimed 4degree sonication (pump-cold water circulation),
the actual temperature is ~17degree.
We always dissolve nuclei in lysis buffer right before the sonication to
avoid the long stand of 1%sds+nuclei on ice, which will precipitate.

10

发帖数: 1
30
www.sigmaaldrich.com/catalog/product/sigma/nuc101
Nuclei Isolation Kit: Nuclei EZ Prep
到处都找不到recipe. 想自己配点,实在不想买(到货太慢)。

发帖数: 1
31
没错,我看了你贴的poster,确实就是NP40(也叫Igepel CA630)。
Sigma坑人啊,这个buffer卖的不便宜。
Sigma的客服回信说
Hello
Thank you for contacting Sigma-Aldrich Technical Service, now MilliporeSigma
- the life science business of Merck KGaA, Darmstadt, Germany.
The exact formulation of the lysis buffer in the NUC101 - Nuclei Isolation
Kit: Nuclei EZ Prep is withheld as proprietary information. We can say that
it is a non-ionic detergent that does not contain reducing agents. And it
does not contain Triton or any protease inhibitors... 阅读全帖

发帖数: 1
32
You leave me no choice but . I can not stand someone without any chemistry
sense when he/she is a biologist.
Chemical reaction is a on/off equilibrium. Some enzymes pick up the first
substance first and then the second one if the space arrangement is allowed
in the active site; some enzymes bind to a coordinated substance complex if
the reaction needs both substances available at the same time to fit into
the active site. It depends on the nature of individual enzymes. Since ssDNA
can not bind t... 阅读全帖
m***c
发帖数: 1403
33
来自主题: Chemistry版 - 问个晶体结构的问题
all the X-ray gives only lattice of electron, photon-nuclei interaction is
negligible,while neutron diffraction gives the lattice of nuclei.
high hkl (high Q) only means smaller d-spacings from the heavy elements can
be detected.

密度
y*****s
发帖数: 1047
34
http://en.wikipedia.org/wiki/Chemical_shift#Chemical_shift_refe
The detected frequencies (in Hz) for 1H, 13C, and 29Si nuclei are usually
referenced against TMS (tetramethylsilane) or DSS, which is assigned the
chemical shift of zero. Other standard materials are used for setting the
chemical shift for other nuclei.
DSS is a solid at room temperature
w********h
发帖数: 12367
35
【 以下文字转载自 Biology 讨论区 】
发信人: toptip (土翁), 信区: Biology
标 题: 从整型医生到诺贝尔奖-山中伸弥的研究历程
发信站: BBS 未名空间站 (Wed Oct 17 00:04:30 2012, 美东)
引言
山中伸弥(Shinya Yamanaka)获得诺奖已经有几天了,虽然两年前在听完他的讲座后
我兴致很高地写了两篇文章,这些天我却没有多少动力再写一篇完整的文章来介绍他的
工作。
我一直对中国现在还盛行的规划性科研,应用导向型科研耿耿于怀。这些所谓的重大项
目在立项的当初对目标/前景写得宏大无比,之后却通常草草收场。如果那些重大项目
真的能实现立项当初的用意,那诺贝尔奖早就在中国遍地开花了。广大科研人员都觉得
这种运行模式是一个笑话,饶毅、施一公等大牛也重炮轰击,但是分钱游戏还在进行着
。而公众,包括相当一部分科研人员也并不了解科研的自身规律,总是一再地问做基础
研究有什么用。
Shinya Yamanaka的成功是典型的小实验室自由探索的成功。他的成功再一次提示,有
相当多的科学突破是不可预测的。如果中国有大批优质的小实验室得到稳... 阅读全帖
C***k
发帖数: 1570
36
are important for the fine control of gait and movement. These
proprioception
receptors are connected to the spinal cord through large fibers. Smaller
afferent fibers
transmit pain (nociception), joint sensation (kinesthesia), and temperature
and touch
perception. (B) All sensory fibers have their nuclei located in the dorsal
root ganglia.
The sensory neurons express high amounts of NKCC1 (Na-K-2Cl contransporter)
protein. (C) In the spinal cord, the terminals of these primary afferent (
sensory
h******i
发帖数: 661
37
你们学校ap能发这么多paper?
1989
Cosmological implications of quasar-galaxy associations, L.Z.Fang, Y.Q.Chu
and X.F. Zhu, Mod. Phys. Lett., 4, 887.
Geometrical optics in an inhomogeneous universe, L.Z.Fang and X.P.Wu,
Chinese Phys. Lett., 6, 233.
Quasar clustering and its cosmological implication, L.Z.Fang, Inter. J. Mod.
Phys. A4, 3477.
L'Osservatorio astronomico di Pechino: la sua storia, il presente, L.Z.Fang,
Scienza e Tecnica, Annuario della EST 88/89 404.
Overview on the frontier of high energy astr... 阅读全帖
r****9
发帖数: 4961
38
http://lib.tsinghua.edu.cn/database/copyrightcase.html
清华大学的斗士们。
违规使用电子资源的处理情况
这里列出一些违规使用电子资源的处理情况,以及各校关于规范电子资源使用的通
告。希望大家尊重版权,合理使用图书馆的电子资源。
清华大学图书馆对不正当使用电子资源人员的处理决定
虽然图书馆反复提醒广大校内用户要合理使用图书馆订购的电子资源,以维护广大
校内用户的合法权益及清华大学的良好声誉,但仍有个别用户我行我素。
2012年10月16日,环境学院博士生王某因对实验室公用服务器管理不善,导致服务
器账号被盗用,造成了过量下载数据的违规事件。该行为致使图书馆受到出版商的警告
,出版商冻结了对该数据库的访问权限。
2012年6月17日,微纳电子系硕士生郑某擅自使用同一实验室其他同学的网络帐号
为校外同学过量下载EPS数据,致使图书馆受到出版商的警告,出版商冻结了该IP(166.
111.77.133)对EPS数据库的访问权限。
2012年6月12日,材料系博士生徐某在实验室使用个人账号连接了实验室公用的路
由器,实验室其他同学通过该路由器... 阅读全帖
S******8
发帖数: 24594
39
老方到美国后发的文章列表,你自己看吧:
1990
174. Biased clustering in a universe with hot dark matter and a cosmic
string, L.Z.Fang, S.P.Xiang and L.Yan, Astr. & Astrophys. 233, 1.
175. Periodicity of redshift distribution in a T-3 universe, L.Z.Fang, Astr.
& Astrophys. 239, 24.
176. An upper limit to quasar's peculiar velocity, L.Z.Fang, Y.Q.Chu, X.F.
Zhu and L.F. Wang, Inter. J. Mod. Phys., 5, 2993.
177. Quasar pair and quasar's peculiar velocity, L.Z.Fang, Developments in
general relativity, astrophysics and qu... 阅读全帖

发帖数: 1
40
其实啊,以咱王所的忽悠水平,哪能忽悠得过温伯格啊。看看安德森三十年前反对ssc
的文章,拿来喷王所,一点都不过时。
The Case Against the SSC
I would like to lay out the scientific case against the Superconducting
Supercollider because I think many of my colleagues who understand this case
are hesitant to make it, not least because some of the arguments are two-
edged. I am very hesitant myself, because I am not against the project,
except insofar as it competes for resources which I see as needed more
elsewhere.
Let me organize my thoughts in terms of ... 阅读全帖
h*****h
发帖数: 264
41
来自主题: Military版 - 我来说两句谢晓亮
我们的第一个科研成果转化是把我们发明的无荧光标记非线性拉曼成像技术[3,8]应用
在脑外科肿瘤切除手术中区分肿瘤边缘[9]。核磁成像可以看到大脑何处有肿瘤,但空
间分辨率不足以看到细胞。脑外科医生手术中需要利用更高分辨率的光学显微镜,传统
的技术是冷冻、切片,用两种染料H&E染色后光学成像,过程繁琐。而我们的快速拉曼
光学成像技术看细胞无需标记,可以大幅度加快手术中肿瘤边缘的鉴别,现在已经被产
品化并试用于脑外科医生们的手术中
核磁成像(左)能看到大脑中的肿瘤,但空间分辨率不足以区分肿瘤边界。传统光学成
像需要复杂的染色,否则不能看到单个细胞(右):而利用无标记拉曼成像(中)脑外
科医生可以区分肿瘤(蓝,蛋白质分子为主)和正常脑组织(绿,脂肪分子为主)

诺贝尔奖已经多次授予NMR研究者:
NMR Nobel Prize Laureates
A brief historical account of the Nobel Prize Laureates clearly shows the
track of the discovery, development, and applic... 阅读全帖
h*****h
发帖数: 264
42
我们的第一个科研成果转化是把我们发明的无荧光标记非线性拉曼成像技术[3,8]应用
在脑外科肿瘤切除手术中区分肿瘤边缘[9]。核磁成像可以看到大脑何处有肿瘤,但空
间分辨率不足以看到细胞。脑外科医生手术中需要利用更高分辨率的光学显微镜,传统
的技术是冷冻、切片,用两种染料H&E染色后光学成像,过程繁琐。而我们的快速拉曼
光学成像技术看细胞无需标记,可以大幅度加快手术中肿瘤边缘的鉴别,现在已经被产
品化并试用于脑外科医生们的手术中
核磁成像(左)能看到大脑中的肿瘤,但空间分辨率不足以区分肿瘤边界。传统光学成
像需要复杂的染色,否则不能看到单个细胞(右):而利用无标记拉曼成像(中)脑外
科医生可以区分肿瘤(蓝,蛋白质分子为主)和正常脑组织(绿,脂肪分子为主)

诺贝尔奖已经多次授予NMR研究者:
NMR Nobel Prize Laureates
A brief historical account of the Nobel Prize Laureates clearly shows the
track of the discovery, development, and applic... 阅读全帖
x****6
发帖数: 4339
43
来自主题: Military版 - 施一公去哈佛挖老师
扯JB蛋,看看已经入职西湖的人才,并不比叔的水平高
1.Lei, K.†, Vu H., Mohan R., McKinney S., Seidel C., Alexander R.,
Gotting K., Workman J., Sánchez Alvarado A.† (2016) Egf signaling
directs neoblast repopulation by regulating asymmetric cell division in
planarians. Developmental Cell. 38(4):413-29. († co-corresponding
anthors)
2.Davies, E.,Lei, K., Seidel, C., Kroesen, A., McKinney, S., Guo, L., Robb S
., Ross, E., Gotting, K., Sánchez Alvarado, A. (2017) Embryonic origin of
adult stem cells required... 阅读全帖
p*r
发帖数: 5516
44
来自主题: Military2版 - Huge blast at Japan nuclear power plant zz
http://www.bbc.co.uk/news/world-12723092 (附图)
The word "meltdown" goes to the heart of the big nuclear question - is
nuclear power safe?
The term is associated in the public mind with the two most notorious
accidents in recent memory - Three Mile Island, in the US, in 1979, and
Chernobyl, in Ukraine, seven years later.
You can think of the core of a Boiling Water Reactor (BWR), such as the ones
at Fukushima Daiichi, as a massive version of the electrical element you
may have in your kettle.
It s... 阅读全帖

发帖数: 1
45
大量反物質奔向地球 原因不明
地球雖然在宇宙之中,但是我們並不十分清楚它與宇宙有什麼樣的具體聯繫。科學家發
現,地球接受大量超出想像的反物質,其原因不明。 據澳洲科技網站ScienceAlert 11
月17日報導,科學家在計算地球所接受的反物質「正電子」時,驚訝地發現其量很大,
而且超出預料。
正電子是指一種質量和大小與電子完全相同,但所帶電荷卻與電子所帶負電完全相反的
粒子。正電子帶正電。
當然,包括正電子在內的大量宇宙射線無時無刻不飛向地球,但是其中的正電子源自何
處,或者說,它們是如何產生的,目前仍是科學之謎。
物理學認為宇宙中存在兩種性質截然相反的物質——正物質與反物質。(TED視頻截圖)
尤其是,2008年科學家使用一種宇宙射線探測器,其名稱為PAMELA(Payload for
Antimatter Matter Exploration and Light-nuclei Astrophysics),檢測到大量的
正電子從宇宙深處飛來,其數量之多超出以前的預料。
有人推測,正電子來自某種脈衝星。波蘭科學院的物理學家格魯斯(Fran... 阅读全帖
l*******G
发帖数: 1191
46
这是她的博士论文:
Xie, Z. D. Condensation Nuclei Formation in the System of SO,-N-
02-03 in the Presence of Water Vapor. Doctoral Dissertation, Drexel
University, 1991
她的文章
http://pubs.acs.org/doi/abs/10.1021/j100183a011
一开始是她一个人发表的,
后来杂志又修改了作者,加入了 James P. Friend:
http://pubs.acs.org/doi/abs/10.1021/j100127a601
看来曾经和 James P. Friend 一起工作过或者曾是他学生。 Friend 应该已经退休了。
http://www.chemistry.drexel.edu/People/friend/friend_personal/friend_personal.html
Xie, Z.D. and J.P. Friend, Formation Mechanism of Con
l****z
发帖数: 29846
47
ROME – Package bombs exploded at the Swiss and Chilean embassies in Rome on
Thursday, wounding the two people who opened them, in attacks that bore
similarities to bombings by anarchists in Greece last month.
One of the wounded is at risk of losing an eye, a hospital official said. No
group claimed responsibility, but Italian Interior Minister Roberto Maroni
said anarchists were thought to be behind the blasts in Rome as well.
"Various elements lead us to believe that this is the correct path," ... 阅读全帖
l****z
发帖数: 29846
48
Video: Barrasso, Inhofe tag-team Boxer on 1970s “New Ice Age” exposure of
Holdren
posted at 9:30 am on March 3, 2011 by Ed Morrissey
I’m old enough to remember when scientists issued alarms over a coming Ice
Age that would wipe out life on Earth on a massive scale. Senator John
Barrasso’s memory holds up pretty well, too, and he reminded everyone of
the consensus in the 1970s that the climate had begun to cool so
significantly that, er, the world needed massive government interventions in
energy... 阅读全帖
q******g
发帖数: 390
49
https://www.fastlane.nsf.gov/a6/A6RC_THISWEEK.html
43. CAREER: Novel Approaches and Instrumentation for 21cm Cosmology
Experiments
Award#:1352519 Current Year Award Amount:$787,369 Cumulative Award Amount:$
787,369 Estimated Total Award Amount:$787,369
Original Start Date:Sep 01, 2014 Projected Duration:0 Months
PI: Parsons Institution:U of Cal Berkeley State:California District:13
44. CAREER: Discovering the Underpinnings of Statistical Language
Learning in Infants
Award#:1352443 Curren... 阅读全帖
A****0
发帖数: 1367
50
我做的东西跟生物没多大关系,去年拖朋友的福打酱油发了篇Nuclei Acids Research
,今年上半年在他怂恿下投了个NIH R21(NIH paperwork那个多啊,差点没赶上
deadline)。 结果除了两个月前从PM那里收到一封要提交已经接受的manuscript的
reminder外,音信全无,是不是proposal太烂了,PM连据信都懒得发了。我知道这个
proposal跟生物不沾什么边,也就是撞个运气,但是好歹也想看看生物大拿们的评审意
见,是不是要联系一下PM才能知道结果?
1 2 3 下页 末页 (共3页)