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全部话题 - 话题: neutrons
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m**********e
发帖数: 12525
1
来自主题: Military版 - 看不起博士论文?
傻屄
忘了neutron star怎么发现的?
当时也是人的phd论文,结果炸药奖只给老板不给学生
四川麻将女人屁历史都不懂,就知道顺杆瞎鸡巴spin
b**k
发帖数: 1219
2
Evacuate earth, engulfed by a neutron star,里面讨论怎么把装载二十万人的飞船
加速到光
速的significant fraction,还靠点谱,看似
记得里面最后使用的是常规燃料爆炸的冲量
在 stupid2 (无) 的大作中提到: 】
0.

发帖数: 1
3
派Jack "Neutron" Welch去收拾它们
w*******g
发帖数: 9932
4
来自主题: Military2版 - 核辐射影响的简单科普
【 以下文字转载自 Military 讨论区 】
发信人: idoba (turen), 信区: Military
标 题: 核辐射影响的简单科普
发信站: BBS 未名空间站 (Mon Mar 14 02:03:41 2011, 美东)
核放射物质主要通过释放核粒子(NEUTRON和GAMMA)来产生对人的影响,除了粒子数量
(取决于距离、时间,传播途径等因素)外,还主要取决于两个方面:一个是衰变强度
,一个衰变能量。衰变强度指的是一秒钟产生多少个例子,一般是以居里为单位,1Ci=
3.7x10^10 Bq, 表示一秒钟产生3.7x10^10个粒子。每个粒子的能量用兆电子伏(MeV)
来衡量。一般而言,同等衰变强度下,能量越高的粒子对人体伤害越大,中子比gamma
伤害更大,是10-20倍之多,原因是高能中子在穿透人体,与人体元素发生作用,产生
细胞变异。
一般实验室用的源都在铅盒里保存,原因是铅(Pb)具有强大的密度能阻碍粒子射出,
因此严格防备的实验室对人体伤害不大。
而核电站辐射产生的核放射元素,通过风,雨,地下水,河流,尘土等等入侵人体后,
其中包含各种复杂的粒子源,半衰期... 阅读全帖
i***a
发帖数: 195
5
来自主题: Military2版 - 日本核事故辟谣2
直接进入并危害人体的不是核粒子(中子或GAMMA粒子),而是
辐射性同位素,比如Pu系列(238-243),Am系列(241-244), Cm系列(242-244)。
这些元素通过粉尘,饮用水,食物,皮肤接触等途径进入人体后无法排解,并通过
ALPHA,BETA等衰变放射GAMMA粒子,与人体细胞元素产生核反应进而破坏细胞并造成对
人体长期伤害。所以日本媒体呼吁不要淋雨,躲在家里就是这个道理。
核放射物质主要通过释放核粒子(NEUTRON和GAMMA)来产生对人的影响,除了粒子数量
(取决于距离、时间,传播途径等因素)外,还主要取决于两个方面:一个是衰变强度
,一个衰变能量。衰变强度指的是一秒钟产生多少个例子,一般是以居里为单位,1Ci=
3.7x10^10 Bq, 表示一秒钟产生3.7x10^10个粒子。每个粒子的能量用兆电子伏(MeV)
来衡量。一般而言,同等衰变强度下,能量越高的粒子对人体伤害越大,中子比gamma
伤害更大,是10-20倍之多,原因是高能中子在穿透人体,与人体元素发生作用,产生
细胞变异。
一般实验室用的源都在铅盒里保存,原因是铅(Pb)具有强大的密度能阻碍粒子... 阅读全帖
Z***e
发帖数: 2983
6
来自主题: Military2版 - 日本核事故辟谣2
which nuclear decay/reaction can produce neutron...?

1Ci=
gamma
i***a
发帖数: 195
7
来自主题: Military2版 - 是碘129,不是碘131
Here is my data:
iso NA half-life DM DE (MeV) DP
123I syn 13 h ε, γ 0.16 123Te
127I 100% 127I is stable with 74 neutrons
129I trace 15.7×106 y β− 0.194 129Xe
131I syn 8.02070 d β−, γ 0.971 131Xe
w*********g
发帖数: 30882
8

打台湾重要据点应该是上tactical nuke吧?
台湾的地下工事经营了那么多年,靠普通的航空炸弹炸不掉;靠炸弹之母袭击面积又太
小,炸不过来;还是上冲击力超强,而且带辐射的核冲击波弹比较快。
占领港口和滩头,主要是用neutron warhead,可以轻松贯穿台湾M60A和M48坦克装甲,
也可以轻松击穿拉法特级护卫舰的上层建筑,用来打击飞机场地勤人员也很好用。
n*********g
发帖数: 380
9
http://en.wikipedia.org/wiki/Dense_plasma_focus
A dense plasma focus (DPF) is a machine that produces, by electromagnetic
acceleration and compression, a short-lived plasma that is hot and dense
enough to cause nuclear fusion and the emission of X-rays and neutrons. The
electromagnetic compression of the plasma is called a pinch. It was invented
in 1954 by N.V. Filippov[1] and also independently by J.W. Mather in the
early 1960s. The plasma focus is similar to the high-intensity plasma gun
devic... 阅读全帖
l****z
发帖数: 29846
10
Recession hits young workers hardest
The number of adults in their 20s without jobs is the highest since record-
keeping began.
Philadelphia Daily News
PHILADELPHIA — Chris Cocchi is nearly 27 years old, unemployed, living at
home in the Philadelphia exurbs with his dad, and spending a good chunk of
his day on the computer.
But he isn't playing video games.
Instead, the West Chester, Pa., resident – who has worked most recently as
a line cook – spends most of his time on Craigslist, hoping to fi... 阅读全帖
m*********a
发帖数: 3299
11
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
H***3
发帖数: 821
12
来自主题: WorldNews版 - 厌烦媒体炒作日本倒核废水
恩,数据支持一下
核武器中高纯U235的临界质量是52公斤,效率可以高达1/3
反应堆中U235的含量大约是在3.5%到5%之间。由于考虑到经济问题,另外反应裂变产物
中有强中子吸
收元素(neutron poison),所以不会等到U235全部烧完再换料。乏燃料中大约有1%的
U235。
g********x
发帖数: 4671
13
正确的回复是:
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.........\.................'...../
..........''...\.......... _.·′
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..............\.............\...
Mr. Spammer, you swine. You vulgar little maggot. You worthless bag of
filth. As they say in Texas. I'll bet you couldn't pour piss out of a boot
with instructions on the heel. You are ... 阅读全帖
g********x
发帖数: 4671
14
来自主题: ebiz版 - CRAIGSLIST的人回信,能卖吗
来来来,把这个贴回去即可。
....................../′ˉ/)
....................,/ˉ../
.................../..../
............./′ˉ/'...'/′ˉˉ`·
........../'/.../..../......./¨ˉ\
........('(...′...′.... ˉ~/'...'\
.........\.................'...../
..........''...\.......... _.·′
............\..............(
..............\.............\...
to you and your Nigerian son.
Mr. Spammer, you swine. You vulgar little maggot. You worthless bag of
filth. As they say in Texas. I'll bet you couldn't pour piss out of a boot
wit... 阅读全帖
g********x
发帖数: 4671
15
来自主题: ebiz版 - 怎么继续玩下去呢?
....................../′ˉ/)
....................,/ˉ../
.................../..../
............./′ˉ/'...'/′ˉˉ`·
........../'/.../..../......./¨ˉ\
........('(...′...′.... ˉ~/'...'\
.........\.................'...../
..........''...\.......... _.·′
............\..............(
..............\.............\...
to you and your Nigerian son.
Mr. Spammer, you swine. You vulgar little maggot. You worthless bag of
filth. As they say in Texas. I'll bet you couldn't pour piss out of a boot
with instructions... 阅读全帖
E**********e
发帖数: 1736
16
【 以下文字转载自 Postdoc 讨论区 】
发信人: ExpressoLove (MoneyForNothing), 信区: Postdoc
标 题: materials science的, 找薄厚怎么这么难?
发信站: BBS 未名空间站 (Wed Oct 20 21:01:43 2010, 美东)
有没有人知道一些机会, 推荐一下.
像neutron, x-ray, SEM, TEM, AFM, materials characterization skills的都做过.
以后的方向想做 磁性材料,特别是磁电耦合, correlated electron system.
去公司的话, 最近的职位,也就是mateirals analyst, materials scientist.不过比较
难, 不要我等wsn.
谢谢.
N*****a
发帖数: 250
17
来自主题: Faculty版 - CAREER awards 2011 so far
http://www.nsf.gov/awardsearch/progSearch.do?WT.si_n=ClickedAbstractsRecentAwards&WT.si_x=1&WT.si_cs=1&WT.z_pims_id=503214&SearchType=progSearch&page=2&QueryText=&ProgOrganization=&ProgOfficer=&ProgEleCode=&BooleanElement=true&ProgRefCode=1045&BooleanRef=
See below
Award Number Title NSF Organization Program(s) Start Date Principal
Investigator State Organization Awarded Amount to Date
1055356 CAREER: Characterization of Cognitive Models of Conceptual
Understanding in Practicing Civil Engineers ... 阅读全帖
s*****y
发帖数: 509
18
来自主题: Faculty版 - TIPTOP上有趣的广告...
Detailed description for Job #15201
Job: we are a dishonest institute
At Beijing Computational Science Research Center, Field(s): accelerator
physics, acoustics, applied physics, astrophysics, atmospheric physics,
atomic physics, biology, biophysics, chaos, chemical physics, chemistry,
classical mechanics, combustion physics, computational physics, computer
science, condensed matter, cosmology, crystallography, electromagnetism,
electronics, energy physics, environmental physics, fluid dynamics,... 阅读全帖
a***t
发帖数: 25
19
Professor Ting Xu received a M.S in Polymer Physics from Changchun Institute
of Applied Chemistry, Chinese Academy of Science in 1999 and a Ph.D from
the Department of Polymer Science and Engineering at the University of
Massachusetts, Amherst in 2004. She was a joint postdoctoral fellow between
the University of Pennsylvania and the Cold Neutrons for Biology and
Technology (CNBT) Partnership Program at NIST before she jointed UC,
Berkeley in January 2007.
Her current research efforts focus on f... 阅读全帖
p**m
发帖数: 11571
20
☆─────────────────────────────────────☆
qaqa (qaqa) 于 (Thu May 19 18:26:19 2011, 美东) 提到:
知道北清这样的有很多。10名以后的大陆学校PHD有这样的吗?
☆─────────────────────────────────────☆
y007 (ben) 于 (Thu May 19 18:38:06 2011, 美东) 提到:
前50的有
☆─────────────────────────────────────☆
z04140 (04-140) 于 (Thu May 19 19:18:47 2011, 美东) 提到:
什么年代毕业的?
☆─────────────────────────────────────☆
sunnyday (艳阳天) 于 (Thu May 19 19:50:46 2011, 美东) 提到:
特别烂的可能没有(因为一般就出不了国了)
10名以后的?看你怎么排名了。
比方说中国农大是不是10名以后?

☆────────────────... 阅读全帖
C***7
发帖数: 241
21
理论凝聚态领域的著名人物
送交者: matter 2004年2月28日18:34:13 于 [教育与学术]http://www.bbsland.com
MIT
MIT的凝聚态理论组里面做高温超导的教授有Patrick Lee, 文小刚(Xiao Gang
Wen),和刚刚加盟的Todadri Senthil,前两位在本版介绍过无数 次了,这里就不说了
。Senthil是Sachdev的PhD,他在Santa Barbara做 Postdoc的时候跟Matthew Fisher
(UCSB)合作的一系列关于Z2规范场论、 电荷分数化和拓扑序的工作使他很快成名,他
现在的研究重点是寻找各种强关联体系中的分数化和拓扑序。除这三位教授之外,MIT
凝聚态组里还
有两个postdoc从事高温超导的研究,Motrunich和Vishwanath,都是Senthil 小组的
,后者是MIT的Pappalardo Fellow。
Stanford
Stanford只有张守晟(Shou-Cheng Zhang)和Rob Laughlin从事高温超导的研究,
前者... 阅读全帖
a*********0
发帖数: 55
22
楼主国内硕博,明年七月毕业,老板是博士生导师,博士在英国读的,人脉很广,认识
很多人,最近,认识的一个老师给老板发了个邮件,如下
“have you seen this?
do you have any post docs who may be suitable and would want to come to UK?
I'm happy to help out and provide a local base at Aston for sample prep and
general assistance。”
说的是一个UK的基金,可以申请2年的博后。
然后老板跟我说了,并抄送了一份给那个老师。
“Would you be interested in this opportunity? You have experiences in NMR
and neutron scattering, ISIS or Diamond light source might be a good place.
If you are interested in, Dr. Richard Martin (h... 阅读全帖
N********n
发帖数: 8363
23
来自主题: Investment版 - TBonds put JPM under stress (转载)
【 以下文字转载自 Stock 讨论区 】
发信人: NeverLearn (24K Bear - Got Silver?), 信区: Stock
标 题: TBonds put JPM under stress
发信站: BBS 未名空间站 (Thu Dec 9 12:41:38 2010, 美东)
(ZZ)
JPMorgan is by far the largest derivative player in the world and they are
the largest player in interest rate derivatives. Most of these are in the
field of interest rate swaps.
In simple terms, our hero JPMorgan, on orders from the Fed buys a trillions
of dollars of long bonds in the future and at the same time sells or shorts
trillions ... 阅读全帖
E**********e
发帖数: 1736
24
【 以下文字转载自 Postdoc 讨论区 】
发信人: ExpressoLove (MoneyForNothing), 信区: Postdoc
标 题: materials science的, 找薄厚怎么这么难?
发信站: BBS 未名空间站 (Wed Oct 20 21:01:43 2010, 美东)
有没有人知道一些机会, 推荐一下.
像neutron, x-ray, SEM, TEM, AFM, materials characterization skills的都做过.
以后的方向想做 磁性材料,特别是磁电耦合, correlated electron system.
去公司的话, 最近的职位,也就是mateirals analyst, materials scientist.不过比较
难, 不要我等wsn.
谢谢.
w******a
发帖数: 78
25
Post-Doc Research Associate Position for Grpahene based materials
The Electronic and Electrochemical Materials and Devices Laboratory (EEMDL)
of the Lugar Center for Renewable Energy, Purdue University and Indiana
University Purdue University at Indianapolis (IUPUI) invites applications
for a post doctoral researcher position starting on March, 2012. The
successful applicants will participate in a multidisciplinary graphene based
materials research program sponsored by the Department of Energy... 阅读全帖
o**********e
发帖数: 18403
26
【 以下文字转载自 SanFrancisco 讨论区 】
发信人: valleyblvd (石头大叔), 信区: SanFrancisco
标 题: 和更优秀的人一起创业(4/4南加创业之夜)
发信站: BBS 未名空间站 (Fri Apr 4 04:48:20 2014, 美东)
发信人: valleyblvd (石头大叔), 信区: StartUp
标 题: 让优秀的人才和你做朋友(4/4南加创业之夜)
发信站: BBS 未名空间站 (Thu Apr 3 21:56:56 2014, 美东)
开始热闹了40多天了。我们搞的打车软件,一切都还挺顺的。最好的就是。
洛杉矶的司机都知道我们了。知道我们的哦乘客还不多,只有一千多。但是,知道我们
的司机有200多。 作为我们的第一批的 early adopter的pool差不多够了。我们的老客
人的回头率非常高? 对我们的司机非常满意。当然,在最开始的时候,我们对司机的
培训做的很好也是有关系的。
app的wire frame 改了又该。 和技术员的讨论也是越来越深入了。 服务器后台用什么
? 如何防止恶意代码? 怎么让用户对我们产... 阅读全帖
n**4
发帖数: 719
27
来自主题: JobHunting版 - 招OpenStack Engineer (代友发) (转载)
【 以下文字转载自 JobMarket 讨论区 】
发信人: no24 (半个体育达人), 信区: JobMarket
标 题: 招OpenStack Engineer (代友发)
发信站: BBS 未名空间站 (Tue Jun 10 18:33:06 2014, 美东)
华为美国(FutureWei)急召OpenStack Engineer. 工作地点在Santa Clara, CA. 待遇优
厚,感兴趣的请站短我,谢谢!
Title: OpenStack Engineer
 
Job Description:
This is a senior technical position in our open innovative lab at Silicon
Valley focusing on cutting edge NFV technologies that are revolutionizing
the telecom industry.
The candidate has to be a self-motivated technical leader, able ... 阅读全帖
n*******y
发帖数: 259
28
来自主题: JobHunting版 - cisco cloud services is hiring (转载)
【 以下文字转载自 SanFrancisco 讨论区 】
发信人: notreally (notreally), 信区: SanFrancisco
标 题: cisco cloud services is hiring
发信站: BBS 未名空间站 (Wed Feb 4 22:48:35 2015, 美东)
http://jobs.cisco.com
type in the Req number to search for details. send resume to me.
Req Number Job Posting Title
R975890 Engineering Manager
R978067 Technical Lead / Platform Solutions – OpenStack, Storage
R978070 Network Technical Leader / Design Engineer - OpenStack,
Neutron, Fabric
R980564 Technic... 阅读全帖
w********o
发帖数: 52
29
来自主题: JobHunting版 - HireTeamMate上最新post的positions
HireTeamMate上最新post的positions:
Cisco
All cloud (openstack, storage, network) and big data
Req Number Job Posting Title
R 75890 Engineering Manager
R 78067 Technical Lead / Platform Solutions – OpenStack, Storage
R 78070 Network Technical Leader / Design Engineer - OpenStack,
Neutron Fabric
R 80564 Technical Leader Engineering (ICF)
R 72905 OpenStack DevOps Engineer
R 79115 DevOps Automantion Engineer
R 77091 Security Product Manag... 阅读全帖

发帖数: 1
30
来自主题: JobHunting版 - 新鲜脸书面经【转载分享帖】
最近两个月忙于找工作,投了不少简历,比较牛逼的公司里面就领英和脸书理我了,都
是同学朋友内推的功劳。没想到自己也比较争气,一路杀到了最后一轮,拿到了两家的
offer。
先上一下小弟超菜的背景:
非CS科班出身,网络相关专业,国内本科,北美硕士加一年零几个月的工作经验,工作
之前没有什么大型开源项目经验,学校课程项目也就只有屈指可数的一两个拿的出手。
从我之前的博客其实也可以看出来,工作中主要是用Python开发Openstack Neutron的
插件。C++,JAVA和Python几乎全靠自学(从本科开始),去Coursera上过一个
Algorithm的在线课程,看过几本算法书,仔细看过www.cplusplus.com上的tutorial,
刷了三四遍Leetcode,看过CC150。除此之外,偶尔泡泡highscalibility.com看一些系
统架构的文章,还在onsite之前抱抱佛脚,狂看了一些脸书的系统设计面试题。
电面:
LC121和LC122一共两道
昂赛:
两轮代码:
1) 给一组区级的二维数组,每一组代表一个接收方,每一个接收方有一组区间。然后
给一个整数,要... 阅读全帖
d******y
发帖数: 3668
31
Our open positions can be found at...
http://www.orau.gov/orise/edu/ornl/postneeds.htm
Current openings...
Environmental Informatics/WebGIS
Neutron Scattering Postdoctoral Research Fellow
Postdoctoral & Post-Master's Positions in Operating Systems and
Virtualization Research
CNMS Scanning Probe Microscopy of Electromechanical Coupling Phenomena
Beam Instrumentation Electrical Engineer/Application Programming
Beam Instrumentation Post-Doc
Organic and Biological Mass Spectrometry Postdoctoral Asso
o*******a
发帖数: 6
32
Postdoctoral Scholar in Atomistic Molecular Dynamics and
Mesoscale Simulations of Charged Dendrimers in Aqueous Solutions
(Oak Ridge National Laboratory and California Institute of Technology)
A postdoctoral research position in atomistic simulations and mesoscale
modeling of dendrimers is available immediately in the Neutron Scattering
Sciences (NSS) Division of Oak Ridge National Laboratory (ORNL). The
candidate will work on a joint ORNL-Caltech project on the characterization
of the structure
n**4
发帖数: 719
33
来自主题: JobMarket版 - 招OpenStack Engineer (代友发)
华为美国(FutureWei)急召OpenStack Engineer. 工作地点在Santa Clara, CA. 待遇优
厚,感兴趣的请站短我,谢谢!
Title: OpenStack Engineer
 
Job Description:
This is a senior technical position in our open innovative lab at Silicon
Valley focusing on cutting edge NFV technologies that are revolutionizing
the telecom industry.
The candidate has to be a self-motivated technical leader, able to think
outside-the-box, and with a passion to build up an innovative cloud platform
with disruptive business models.
Members of this tea... 阅读全帖
n*******y
发帖数: 259
34
来自主题: JobMarket版 - cisco cloud services is hiring (转载)
【 以下文字转载自 SanFrancisco 讨论区 】
发信人: notreally (notreally), 信区: SanFrancisco
标 题: cisco cloud services is hiring
发信站: BBS 未名空间站 (Wed Feb 4 22:48:35 2015, 美东)
http://jobs.cisco.com
type in the Req number to search for details. send resume to me.
Req Number Job Posting Title
R975890 Engineering Manager
R978067 Technical Lead / Platform Solutions – OpenStack, Storage
R978070 Network Technical Leader / Design Engineer - OpenStack,
Neutron, Fabric
R980564 Technic... 阅读全帖
l****u
发帖数: 95
35
new grads 也行,站内联系,多谢!
公司HQ在上海,成立于2000年,湾区有R&D中心。
////
We are hiring software engineer position at SIHUA Technologies in Silicon
Valley focusing on cutting-edge SDN, Container and OpenStack networking. In
this team, you will have opportunity to architect, design and develop
prototypes for proof of concept. The candidate will have to be a self-
motivated and passionate professional and you will be interacting and
working closely with Cloud platform team to deliver high value hyper-
converged IT ar... 阅读全帖
S********y
发帖数: 182
36
Yes, there is a green ground line in the electric box. Use this ground wire
and the existing hot black and neutron white wires to make a plug. I cut a plug out of
my spare computer power cord. This cord is 18AWG. This should be fine for a
500W and <3A range hood, although most kitchen appliances use <16AWG.
g*****9
发帖数: 4125
37
来自主题: Living版 - 请问两个仪器, 谢谢!

What kind of radiation are you checking?
Ionizing radiation include:
Alpha radiation
Beta(+/-) radiation
Gamma radiation
Non-ionizing radiation include:
Neutron radiation
Electromagnetic radiation
Light radiation
Thermal radiation
Black-body radiation

Continuous radon monitor
g********x
发帖数: 4671
38
来自主题: Money版 - 我这样做是否合法?
直接上template:
....................../′ˉ/)
....................,/ˉ../
.................../..../
............./′ˉ/'...'/′ˉˉ`·
........../'/.../..../......./¨ˉ\
........('(...′...′.... ˉ~/'...'\
.........\.................'...../
..........''...\.......... _.·′
............\..............(
..............\.............\...
to you and your Nigerian son.
Mr. Spammer, you swine. You vulgar little maggot. You worthless bag of
filth. As they say in Texas. I'll bet you couldn't pour piss out of a boot
with... 阅读全帖
z****l
发帖数: 5282
39
来自主题: Money版 - [合集] 我这样做是否合法?
☆─────────────────────────────────────☆
tangli411 (糖炒栗子) 于 (Thu Mar 22 12:12:30 2012, 美东) 提到:
大家好,我遇到了一个古怪的事情,不知道我这样做是否合法?请教大家的意见
事情是这样的,我在craigslist上卖二手的护肤品,因为就一百块钱,我是要求现金交
易的。有个人要买,最开始的时候,她说现在在加州,马上搬到我的城市来,她现在可
以给我a certified check。并付我额外的$20,目的是要我从craigslist上把我发的帖
子撤了并保证我的东西一定要给她留着,她会让她的mover来取东西并给我支票。我觉
着也可以接受就同意了。
今天,她跟我说,她的秘书已经把Cashier check 寄出来了,但是是和她以前拖欠的搬
家费开在一张支票上,一共$1985,因为mover说如果不一次付清就不能上门pickup。她
要我收到这个支票以后把卖东西的钱取出来以后,用西联汇款把剩下的钱给她的mover
,这样她的mover就可以pickup我卖的东西给她。
我家LD说有点古怪,怕是洗... 阅读全帖
S*********g
发帖数: 24893
40
【 以下文字转载自 Stock 讨论区 】
发信人: StephenKing (金博士), 信区: Stock
标 题: 市面上流通1358种电子货币,包括ByteCoin
发信站: BBS 未名空间站 (Fri Dec 15 00:59:47 2017, 美东)
# Name Symbol Market Cap Price Circulating Supply Volume (
24h) % 1h % 24h % 7d
1
Bitcoin BTC $290,617,804,480 $17,358.40 16,742,200 $15,
825,500,000 -0.36% 5.62% 3.15%
2
Ethereum ETH $63,827,563,522 $662.47 96,348,146 $3,723,
910,000 -0.48% -10.50% 52.62%
3
Bitc... 阅读全帖
N****w
发帖数: 21578
41
来自主题: Overseas版 - 看到一个牛人
http://www.nbcbayarea.com/news/local/250-DVDs-in-a-Quarter-Sized-Device----Coming-Soon.html
http://www.mse.berkeley.edu/Faculty/xu/ting_xu.html
Professor Ting Xu received a M.S in Polymer Physics from Changchun Institute
of Applied Chemistry, Chinese Academy of Science in 1999 and a Ph.D from
the Department of Polymer Science and Engineering at the University of
Massachusetts, Amherst in 2004. She was a joint postdoctoral fellow between
the University of Pennsylvania and the Cold Neutrons for Bi
n********e
发帖数: 133
42
发信人: naughtylee (都来fit), 信区: Engineering
标 题: phd position open in Rensselaer polytechnic institute
发信站: BBS 未名空间站 (Thu Jun 18 13:59:31 2009, 美东)
这位老师很nice,所以帮忙转贴一下。
下面是教授的研究方向和招学生的简介。希望申请者有计算(simulation)的背景,
可以是工物系,机械系,力学系或者相关专业毕业的。希望能2010年春季入学,fall
也可以。
研究可应用于核电,医疗器械等等不错的行业中。
Research Interests:
..
Monte Carlo modeling and simulation in radiation particle (photon/electron
/neutron) transport computations
..
Methodology and code development for radiation transport in highly
heterogeneous
media

发帖数: 1
43
来自主题: Parenting版 - 物理版的ID简介 (转载)
【 以下文字转载自 Physics 讨论区 】
发信人: Microsystem (clam), 信区: Physics
标 题: 物理版的ID简介
发信站: BBS 未名空间站 (Mon Dec 24 06:13:28 2007)
我们各自介绍一下自己的研究方向,如果以后有什么专门而又悬而未决的问题,我可以
把文章转入你的信箱,也可以增强互信,在这个网络空间得到一定的透明度。随着大家
逐渐在各个领域展露头角,如果需要协作,这也算是一个基础吧。
可以简单说说啊,比方什么凝聚态,高能,低温,材料,等等。呵呵,都发包子!
实验凝聚态:
pqinsheng: 实验凝聚态, LT-STM.
ansh: 实验凝聚态
Starcraft114: 实验凝聚态,STM, 磁性材料
Xyatoo: 实验凝聚态,硅量子点的光学特性
Chenxi17: 凝聚态,磁性物理
Ac: 氧化物磁性半导体的磁学和自旋相关输运
phasespace: 实验凝聚态物理
Zhane: 固体物理电特性?
Microsystem:高能物理转到凝聚态物理,半导体器件方向
Wokaowokao: 氮化物的合成
yaokent: ... 阅读全帖
E**********e
发帖数: 1736
44
有没有人知道一些机会, 推荐一下.
像neutron, x-ray, SEM, TEM, AFM, materials characterization skills的都做过.
以后的方向想做 磁性材料,特别是磁电耦合, correlated electron system.
去公司的话, 最近的职位,也就是mateirals analyst, materials scientist.不过比较
难, 不要我等wsn.
谢谢.
w******a
发帖数: 78
45
Post-Doc Research Associate Position for Grpahene based materials
The Electronic and Electrochemical Materials and Devices Laboratory (EEMDL)
of the Lugar Center for Renewable Energy, Purdue University and Indiana
University Purdue University at Indianapolis (IUPUI) invites applications
for a post doctoral researcher position starting on March, 2012. The
successful applicants will participate in a multidisciplinary graphene based
materials research program sponsored by the Department of Energy... 阅读全帖
k******6
发帖数: 7
46
Postdoctoral Research Associate Position in
Synthesis and Characterization of Two-Dimensional Organic Materials
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory
Reference Code: ORNL12-76-CNMS
Project Description
The Functional Hybrid Nanostructures group at the Center for Nanophase
Materials Sciences (CNMS) at Oak Ridge National Laboratory is seeking to
fill a postdoctoral research position in a project focused on the synthesis
of two-dimensional (2D) materials, similar to ... 阅读全帖
k******6
发帖数: 7
47
Postdoctoral Research Associate Position in
Synthesis and Characterization of Two-Dimensional Materials
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory
Reference Code: ORNL12-76-CNMS
Project Description
The Functional Hybrid Nanostructures group at the Center for Nanophase
Materials Sciences (CNMS) at Oak Ridge National Laboratory is seeking to
fill a postdoctoral research position in a project focused on the synthesis
of two-dimensional (2D) materials and the
characteriza... 阅读全帖
J***s
发帖数: 232
48
你的原话:
nature,science有正襟科学文章吗
我说的单独文章都是能留下来,以后能进教科书的东西
给你随手列了几篇,然后你说二战以前的不算:我列的5篇Nature的文章里几篇是二战
前的?接下来说只有纯物理才算,合着在你眼里只有纯物理才是科学?要不你给中科院
写封信建议把数学化学生物地学学部统统撤销了?大概诺贝尔化学奖和医学奖在你眼里
都是joke了,高锟的诺贝尔物理学奖也应该撤销,因为他搞的不是“纯物理”,所以也
不是科学。
浙大没发NS就能让你狡辩到这个份上,浙大学生的脸皮厚度我算是服了。
PS:我再给你举个例子好了:
A. Hewish, S. J. Bell, J. D. H. Pilkington, P. F. Scott & R. A. Collins (
1968). "Observation of a Rapidly Pulsating Radio Source". Nature 217 (5130):
709–713.
Antony Hewish由于发现了脉冲星被授予1974年的诺贝尔物理学奖,首发就是这篇;你
是不是又要说1968年太早了,天体物理学不算“... 阅读全帖
g****t
发帖数: 31659
49
【 以下文字转载自 Mathematics 讨论区 】
发信人: kennkqzhang (kenn), 信区: Mathematics
标 题: 最puzzling藕的还是空间和物质的可分性
发信站: BBS 未名空间站 (Fri Dec 4 02:42:43 2009, 美东)
最puzzling藕的还是空间和物质的可分性;
物质不断地分下去,是什么?
这个古老的问题,已经puzzling藕N年了。。。
这个不需要物理学知识,完全是个纯逻辑问题、纯哲学问题,或者说纯数学问提;
空间的可分性,也很paradoxical;
其它的比较简单了;
藕斗胆评论几个:
1 ether exists;
以太无处不在;建议研究以太动力学,ether dynamics;
以太很难被直接观测,但是,在weak interaction的时候,是以太造成了W+,W-,Z
2 电荷到底是什么?
什么东西都被看成是运动了、能量了,连质量都没有被放过;只有电荷是个例外;
what the hell is the charge?
藕speculate,电荷也是一种运动形式,跟spin自旋 很项似;
3... 阅读全帖
v********d
发帖数: 3531
50
开始热闹了40多天了。我们搞的打车软件,一切都还挺顺的。最好的就是。
洛杉矶的司机都知道我们了。知道我们的哦乘客还不多,只有一千多。但是,知道我们
的司机有200多。 作为我们的第一批的 early adopter的pool差不多够了。我们的老客
人的回头率非常高? 对我们的司机非常满意。当然,在最开始的时候,我们对司机的
培训做的很好也是有关系的。
app的wire frame 改了又该。 和技术员的讨论也是越来越深入了。 服务器后台用什么
? 如何防止恶意代码? 怎么让用户对我们产生感情? (跑偏了)
4/4 洛杉矶的创业大会,我也要上台去。 呵呵,只有1分钟,希望好好的推广一下自己。
2014.4.4
LA创业之夜
百名华人创业者
齐聚LA Downtown!
明天又是普创体现价值的一天。
明天也将执行paperless方针。
Mixer信息将分享在微信群。
请记得带上你的手机和名片。
为了方便大家提前了解团队,以下是团队信息及简单描述。如有信息描述不准确,请见
谅。如有团队信息遗漏,也请见谅。明天是你表现的舞台,是你代表团队表现的舞台。
确认参与的创业团队(排名不分先后)
Pr... 阅读全帖
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