G***G 发帖数: 16778 | 1 I am wondering if anyone can explain why high-visibility line is good for
crappie fishing.
Some days ago I posted a message here asking whether crappie is line shy.
People seems to agree that crappie is line shy.
But what is the benefit of using a hi-vis line for crappie fishing?
And won't the hi-vis line scare away the crappie? |
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f******n 发帖数: 137 | 2 今天做了一个小实验,希望能够用drop cast 的方法得到thin film. 然后再照照 UV-
vis 吸收谱.但是我发现我制备的薄膜UV-vis spectrum上面基本上找不到最大吸收峰。
但是基线的水平比较高。
我就drop solution 到 glass slide上面,然后迅速的测了几个谱图。在这个过程中,
随着溶液的挥发,玻璃板上面的溶液逐渐变干得到一层薄膜。 各个状态的普图如下,
有经验的大哥大姐小弟小妹请帮忙分析一下。为什么到固体状态(thin film)就没
有最大吸收峰了? |
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A*******l 发帖数: 67 | 3 我们用Varian比较多
现在用的都是100和300系列
优点是stability, sensitivity,reproducibility
官方的baseline stability是0.0003 abs/hr,我实测到新的机器可以到0.0001abs/hr,
多次重复一致
缺点是维修比较贵,由于典型的double beam设计,旧仪器chopper元件的故障率很高,
基本上两三年要换一次,当然也是因为我们用的assay比较intense,经常7X20的用
一直很想买他家的50/60系列,但是老板不批钱
50/60系列的优点是速度和方便
像楼上讲的Agilent一样,可以开室测试。因为使用功率非常高的Xenon lamp,而不是
普通的UV/vis lamp,所以室内光源对测试基本没影响。而且由于Xenon lamp直接覆盖
190-1200nm,没有通常所见的uv/vis光源切换造成的spike。这个系列使用dual beam设
计,没有chopper元件,所以故障率比较低。缺点是理论上来讲没有double beam的
stability和reproducibility好,但实测几... 阅读全帖 |
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a***n 发帖数: 578 | 4 【 以下文字转载自 Physics 讨论区,原文如下 】
发信人: argon (argon), 信区: Physics
标 题: optical conductivity and UV-vis spectrum
发信站: Unknown Space - 未名空间 (Tue Jun 8 09:57:53 2004) WWW-POST
what is the difference between these two spectrums?
the optical conductivity spectrum and UV-vis adsorption spectrum.
It should be correlated. right?
tx. |
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S*****n 发帖数: 6055 | 5 【 以下文字转载自 NanoST 讨论区 】
发信人: Synthon (合成子·清华招办MIT招生代理), 信区: NanoST
标 题: 请推荐uv-vis灯
发信站: BBS 未名空间站 (Tue Jul 3 12:19:30 2007), 站内
发信人: Synthon (合成子·清华招办MIT招生代理), 信区: Chemistry
标 题: 请推荐uv-vis灯
发信站: BBS 未名空间站 (Tue Jul 3 12:19:06 2007), 转信
想整点光催化反应,需要买个灯。俺没有这方面的经验,周围也没有人可以请教。老板
有个三十年前的破灯,不打算用了,准备再买个。
请教有经验的大侠,那些牌子的灯比较好?不用太复杂,只要能用,不易坏就行。
多谢!
可以送点包子饺子啥的:) |
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r**x 发帖数: 408 | 6 【 以下文字转载自 Chemistry 讨论区 】
发信人: raxx (凤凰传奇), 信区: Chemistry
标 题: 求教N-isopropylacrylamide及其聚合物的UV-vis吸收波长和摩尔吸光系数
发信站: BBS 未名空间站 (Fri May 3 20:47:10 2013, 美东)
请教一下各位高人 N-isopropylacrylamide及其聚合物的UV-vis吸收波长和摩尔吸光系
数。谢过各位大神 |
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a*****i 发帖数: 299 | 7 大家给宝宝补充的poly vis sol 或者 tri vi sol都是加铁的那种么?谢谢! |
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a*****i 发帖数: 299 | 8 今天去cvs,没看到加铁的tri-vi-sol,只好买了 poly vis sol ,结果把小人给吃吐
了。这东西我自己闻着就恶心,可怜的小人。
加铁的tri-vi-sol会不会好吃些? |
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m******o 发帖数: 510 | 9 vis会断货,改名Butterfly Jike :p |
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G**Y 发帖数: 33224 | 10 standford确实牛,他们这个组里把JS vis这摊全包了吧
(当然他们现在是Seattle的人了,都很牛,都很牛)
(但是Jeff Heer是Berkeley本硕博) |
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T**********t 发帖数: 1604 | 11 我最近在别人实验室用一台Cary 100 UV-Vis Spec测样品浓度,教我的那个人告诉我说
放进去空白buffer之后,先点baseline,再点zero,我就一直这么做的。但是今天看了
一下manual,都说是先点zero,再点baseline。。。
我想知道这个zero操作都具体做些什么。zero和baseline的先后顺序对于读数的影响有
多大,不知道有没有人了解的。我现在没法去那边实验室,没法实地验证一下。 |
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d********y 发帖数: 176 | 12 a.u. > 2 is outside the dynamic range of many spectrometer anyway and so
two
of your spectra are not really meaningful to start with.
the two spectra with weaker absorption are meaningful and do have some
features around 330-400 nm. your baseline is terrible (should be close to
0). Either your control (i assume you used a dual beam uv-vis) is bad, or
like someone said you've lots of scattering which caused light loss. |
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r****1 发帖数: 2299 | 13 请问如果做UV-VIS REFLECTION,样品测出来的值在UV REGION高于100% REFLECTION,
是不是说明REFERENCE有问题? |
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d********y 发帖数: 176 | 14 what is your reference? often you need to switch references between UV and
vis. |
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b******e 发帖数: 362 | 15 想买一台 UV-VIS Spectrometer。 Research grade 的。求DX推荐。有包子送上。
如有vendor 也可pm我。 |
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A*******l 发帖数: 67 | 16 我觉得你说的monochromator是那种specific single wavelength light input device
.我见到的那台是single channel light emitter,连接别的detector 和sample
chamber用作fluorometer
很少有人把UV/vis叫monochromator吧,虽然原理上它包括某种monochromator作为光源。
Xenon flash lamp 和DT就看个人爱好。DT比较传统,但是除非你买5000/6000系列,不
然我觉得performance差不多。 |
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r**x 发帖数: 408 | 17 请教一下各位高人 N-isopropylacrylamide及其聚合物的UV-vis吸收波长和摩尔吸光系
数。谢过各位大神 |
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a***n 发帖数: 578 | 18 more detail pls.
if I have an optical conductivity peak at xxx nm, so should I have same peak
there at UV-vis spectrum?
Can we determine component's color by looking at optical conductivity
spectrum? thx. |
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S*****n 发帖数: 6055 | 19 汗
你老大给俺推荐的这个是保证没有vis的uv灯啊。。。 |
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w**********g 发帖数: 687 | 20 Want to buy a UV/VIS Spectrophotometer for the range of 200 - 1100 nm.
Could you please recommend one brand and the possible price?
Thank you. |
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S*****n 发帖数: 6055 | 21 【 以下文字转载自 Chemistry 讨论区 】
发信人: Synthon (合成子·清华招办MIT招生代理), 信区: Chemistry
标 题: 请推荐uv-vis灯
发信站: BBS 未名空间站 (Tue Jul 3 12:19:06 2007), 转信
想整点光催化反应,需要买个灯。俺没有这方面的经验,周围也没有人可以请教。老板
有个三十年前的破灯,不打算用了,准备再买个。
请教有经验的大侠,那些牌子的灯比较好?不用太复杂,只要能用,不易坏就行。
多谢!
可以送点包子饺子啥的:) |
|
f*********u 发帖数: 3 | 22
UV -vis-ir 常用的是Xe lamp.
疝灯。
另外就是氘灯了。 |
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m******e 发帖数: 432 | 23 用UV-Vis spectrometer测量吸收来测量ZnO的带宽。我用fused quartz做衬底,ZnO并
没有把衬底全部覆盖(覆盖大约50%)。我做了几组数据,(1)一片,(2)两片
和在一起,(3)三片和在一起。发现测出的带宽都不一样,但是单个片测的结果都一
样。我该咋办?请高人指点指点吧! |
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c****e 发帖数: 37 | 26 Article 24
Issuing of a uniform visa
1. The period of validity of a visa and the length of the authorised stay
shall be based on the examination conducted in accordance with Article 21.
A visa may be issued for one, two or multiple entries. The period of
validity shall not exceed five years.
In the case of transit, the length of the authorised stay shall correspond
to the time necessary for the purpose of the transit.
Without prejudice to Article 12(a), the period of validity of the visa shall
i... 阅读全帖 |
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l**p 发帖数: 474 | 27 Virtual Reality 也是Graphics的很重要的一个方向。但是对这方面会议的水平就不熟
悉了。会议有IEEE VR, ACM VRST. EG VAST.等等。
下面说一说Visualization这个方向吧。这个方向最好的会议是就每年的Visualizatio
n (VIS).当然,如果有好的文章,也可以投到SIGGRAPH.早期的一些Visualization经典
文章比如Marching Cubes都是在SIGGRAPH上发表的。当然那时候还没有Visualization这
个会议。1990年才开始第一届VIS会议。现在录取率一般在三分之一。2005年是 88/268
。这里还有相关的两个会议Symposium on Volume Visualization and Graphics (VolV
is)和Symposium on Parallel and Large-Data Visualization and Graphics (PVG)。
原来都是每两年一次。交替和Vis一同举行。但是从2005年开始都并入Vis会议了。Vis每
年会选一些文章进入一期IEEE |
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l**p 发帖数: 474 | 28 Virtual Reality 也是Graphics的很重要的一个方向。但是对这方面会议的水平就不熟
悉了。会议有IEEE VR, ACM VRST. EG VAST.等等。
下面说一说Visualization这个方向吧。这个方向最好的会议是就每年的Visualizatio
n (VIS).当然,如果有好的文章,也可以投到SIGGRAPH.早期的一些Visualization经典
文章比如Marching Cubes都是在SIGGRAPH上发表的。当然那时候还没有Visualization这
个会议。1990年才开始第一届VIS会议。现在录取率一般在三分之一。2005年是 88/268
。这里还有相关的两个会议Symposium on Volume Visualization and Graphics (VolV
is)和Symposium on Parallel and Large-Data Visualization and Graphics (PVG)。
原来都是每两年一次。交替和Vis一同举行。但是从2005年开始都并入Vis会议了。Vis每
年会选一些文章进入一期IEEE |
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c**i 发帖数: 6973 | 29 中俄交往中北京开始占据上风. BBC CHinese, Oct 3, 2011
http://www.bbc.co.uk/zhongwen/simp
/chinese_news/2011/10/111003_china_russia.shtml
Note: Prominently displayed in the home page of Stockholm International
Peace Research Institute (SIPRI)
http://www.sipri.org/
is
Chinese-Russian Security and Energy Relations Are Crumbling. Oct 3, 2011
, which heralds the new book:
Linda Jakobson, Paul Holtom, Dean Knox and Jingchao Peng, China's Energy and
Security Relations With Russia; Hopes, frustrations and uncertain... 阅读全帖 |
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R*I 发帖数: 1840 | 30 http://www.bloomberg.com/news/2012-02-02/harvard-targeted-in-u-
The U.S. Education Department is probing complaints that Harvard University
and Princeton University discriminate against Asian-Americans in
undergraduate admissions.
The department’s Office for Civil Rights is investigating a complaint it
received in August that Harvard rejected an Asian- American candidate for
the current freshman class based on race or national origin, a department
spokesman said. The agency is looking into a sim... 阅读全帖 |
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w*********g 发帖数: 30882 | 31 美元的国际储备货币地位还能维系多久? (2013-10-13 20:52:13)
葡萄牙、西班牙、荷兰、法国、英国、美国各自货币作为国际储备货币的时间
http://www.zerohedge.com/news/2013-10-13/chinas-official-press-
China's Official Press Agency Calls For New Reserve Currency, And New World
Order
by Tyler Durden, Zero Hedge, 13 October 2013
We assume it is a coincidence that on the day in which we demonstrate China'
s relentless appetite for gold, driven by what we and many others believe is
the country's desire to have a call option on a gold-backed reserve
currency wh... 阅读全帖 |
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w*********g 发帖数: 30882 | 32 Taiwan is Moving Closer to China, So Why Isn't the U.S. Freaking Out?
The Obama administrationós promises to deepen economic and military ties
with allies in the Asia-Pacific region have fallen flat in light of
budgetary
realities. Defense cuts totaling nearly $1 trillion over the next decade,
and the necessity of focusing diplomatic and military attention on the
Middle
East, most notably Syria, exposed the gap between the White Houseós
unrealistic
expectations and the reality of limited resourc... 阅读全帖 |
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M*V 发帖数: 3205 | 33 Taiwan is Moving Closer to China, So Why Isn't the U.S. Freaking Out?
The Obama administrationós promises to deepen economic and military ties
with allies in the Asia-Pacific region have fallen flat in light of
budgetary
realities. Defense cuts totaling nearly $1 trillion over the next decade,
and the necessity of focusing diplomatic and military attention on the
Middle
East, most notably Syria, exposed the gap between the White Houseós
unrealistic
expectations and the reality of limited resourc... 阅读全帖 |
|
c******r 发帖数: 3778 | 34 第八章 脊髓灰质炎(IPV)疫苗
脊髓灰质炎(poliomyelitis,简称polio)又称小儿麻痹(infantile paralysis)是
由脊髓灰质炎病毒(poliovirus)引起的急性传染病,主要通过粪口途径传播。这个病
由于大家比较熟悉,病本身就不仔细介绍了。脊髓灰质炎病毒包括三种血清型:PV1,
PV2, 和PV3。由于这种病有比较严重的后果,所以其疫苗的必要性就不必介绍了。
关于脊髓灰质炎疫苗的伟大成就,我就直接摘抄wiki的原文了:
While now rare in the Western world, polio is still endemic to South Asia
and Nigeria. Following the widespread use of poliovirus vaccine in the mid-
1950s, the incidence of poliomyelitis declined dramatically in many
industrialized countries. A global effort to eradica... 阅读全帖 |
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z****0 发帖数: 3942 | 35 And this article on New York Post.
The AP ran a report on Asian students of mixed parentage checking “white”
on their applications to avoid outing themselves as Asians. The Princeton
Review Student Advantage Guide counsels Asian-Americans not to check the
race box and warns against sending a photo.
In a culture that makes so much of celebrating racial minorities, and that
values fairness above all, Asian-American students think that they need to
hide their ethnicity because the college-admission... 阅读全帖 |
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w*******r 发帖数: 7276 | 36 【 以下文字转载自 Military 讨论区 】
发信人: RRI (投资怪物), 信区: Military
标 题: Harvard Targeted in Asian Discrimination Probe
发信站: BBS 未名空间站 (Thu Feb 2 09:42:54 2012, 美东)
http://www.bloomberg.com/news/2012-02-02/harvard-targeted-in-u-
The U.S. Education Department is probing complaints that Harvard University
and Princeton University discriminate against Asian-Americans in
undergraduate admissions.
The department’s Office for Civil Rights is investigating a complaint it
received in August that Harvard rejected a... 阅读全帖 |
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KV 发帖数: 5728 | 37 威力你太不了解海钓了,线的粗细或者颜色当然影响海钓,甚至包括金枪鱼。一直没有
回有关你对海钓的讨论,是因为没什么好讨论的,你了解的太少,类似一个新手在你面
前说大小嘴的钓法,很难能讨论到点子上。
淡水或者海钓在某些场合下,都需要hi-vis的线,比如避开某些区域,或者光线很暗而
水面或近岸情况复杂,需要实时掌控Lure的位置,这些都需要hi-vis的线。
线的颜色影响海钓很多,比如说,popping大型兰旗金枪鱼,和jigging兰旗,用的线和
rig是不同的,popping时候用的线不能用hi-vis和很粗的leader,很多人用100磅的
leader线,而jigging的leader可以到150磅,其原因是鱼从水下攻击水面饵的时候,粗
的leader或者hi-vis的线很明显,而vertical jigging就不明显,因为线的选择,
jigging的drag上的也略高于popping,因为在Stella 30000之前,线容量都不能算足够
,jigging下去的线的长度要多于popping能够投掷出去的长度。blah blah。。。。
海钓的技术要求比淡水还高,尤其是用Lure... 阅读全帖 |
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发帖数: 1 | 38 最近做的一个项目需要用图表方式显示数据摘要,
数据在后台产生,图表在前台用vis.js显示。
vis.js的Graph2D API简洁好用,画出来的图表可以自由缩放,本来觉得挺完美了,结
果想用JS加一个下载图表功能的时候发现有个大坑。
原因是vis.js画的图表是用一堆DIV DOM加SVG Path实现的,DIV DOM负责坐标,SVG
Path负责数据线条。如果用SVG to PNG conversion的方法抓出来的只有数据线条,用
html2canvas抓出来的则只有坐标。
绞尽脑汁最后弄了一个笨办法,就是用window.print()让用户自己打印成PDF。但是因
为页面上的图表宽度是动态的,打印时会overflow,所以最后又不得不绕了一下,用
vis.js同时产生2副图,用CSS控制一副动态宽度在网页上显示,一副固定宽度专门在打
印时显示,总算凑合实现的目标功能。
不知道版上大牛有没有更好的解决方案? |
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发帖数: 1 | 39 《知识分子》
7月15日,国家药品监督管理局发布公告称,通过飞行检查发现长春长生生物在冻
干人用狂犬病疫苗生产过程中存在记录造假等严重违反《药品生产质量管理规范》行为
,并责成吉林省食品药品监督管理局收回长春长生相关《药品GMP证书》。而在去年10
月,长春长生生产的百白破联合疫苗在中国食品药品检定研究院的药品抽样检验中被检
出效价指标不符合标准规定。令人惊讶的是,吉林省食品药品监督管理局直到最近才下
发行政处罚决定书。
这一事件再次暴露出我国疫苗领域的现状:即从生产到监管,疫苗问题多多。究竟
如何才能彻底解决这些问题,让中国老百姓尤其是婴幼儿能接种上安全、有效的疫苗呢
?在预防性疫苗和药品的安全性监管方面,美国在世界各国可谓是最为严格的,研究、
学习该国的成功经验或许可以使我国在制定相关政策时少走弯路,它山之石可以攻玉。
本文就主要根据美国疾控中心(CDC)网站的有关疫苗安全监管内容,介绍美国的疫苗安
全是如何监管的。
在世界公共卫生领域最为成功的案例应该算是利用接种疫苗来大幅度降低传染性疾
病的发病率。正是由于疫苗的使用,当年严重威胁人类健康的天花才得以在全球范围内
彻底灭绝,脊髓... 阅读全帖 |
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m*********s 发帖数: 1188 | 40 二手交易风险自负!请自行验证是否合法和一手卡!:
我想卖的物品:
3台Dell Vostro 460, customized. 悲催的是, 每台配置都不一样:
====================================================
V460 #1: 售价$550
升级过: 内存4G; 显示器U2211H; 独显Radeon HD 6450
具体配置:
1 225-0254 Vostro 460 Mini Tower $489.00
1 317-6424 Sandy Bridge i5-2400 Vostro
1 317-6419 4GB Dual Channel DDR3 SDRAM 1333MHz - 2DIMMs Vostro
1 331-1685 Dell Optical USB Mouse Vostro
1 331-2860 Dell USB Entry Keyboard, No Hot Keys,English,Vostro
1 320-2130 Dell U Series U2211H 21.5"W Monitor, 21.5 Inch V... 阅读全帖 |
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S******r 发帖数: 1813 | 41 【 以下文字转载自 Game 讨论区 】
发信人: SnowStar (奔跑不息。。。物来则应 ,过去不留), 信区: Game
标 题: questions for Dell XPS 8500 PC
发信站: BBS 未名空间站 (Sat Sep 22 14:43:54 2012, 美东)
I am thinkig to buy a Dell PC. Here is one from dealsea.com.
http://dealsea.com/view-deal/68523
I would appreciate your comments and help on some questions:
1. Is it a good deal for gaming, 1GB video card good for games such as D3,
WoT, WoW, Guildwar2?
2. Where can I buy Dell Gift Cards to reduce my cost if possible?
3. If you used this pc before, ca... 阅读全帖 |
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P****S 发帖数: 2457 | 42 Stradivarius跟VIS比起来,小力量时的控制差不多,发较大的力时手感反馈有点发散
发虚,不如VIS扎实。不过,同一型号的板子也是存在个体差异的,也有人买到到过击
球发劈的VIS,我相信也会存在质量好的Stradivarius,关键还是看运气。不过,运气
常常跟RP有关,你趁板子还在路上,发几个包子攒攒RP吧,哈哈 |
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m*******a 发帖数: 363 | 43 i went to key west around July 4th. went diving in keywest and key largo.
Highly recommend key largo. Key largo has better coral reef and more fish.
we encountered thunderstorm in key largo on our first dive. but water under
30 ft , vis is still very good, 30 ft at least. and very calm under water
too. when we came back up there , storm already passed. lots of ppl do
snorkelling there at the surface as well. since the vis was so good, you can
pretty much see everything from the surface , jus... 阅读全帖 |
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r********3 发帖数: 694 | 44 vis比较好的三个会
ieee infovis (+vast)
pacific vis
euro vis
不过我觉得你看看paper的demo video就好了,主页都有
如果真的特有兴趣,可以参加个infovis的tutorial,不过那要是明年年底的事了。。。 |
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B*Z 发帖数: 7062 | 45 不会吧,纯合成油0w,5w一个价钱,除非你用普通油。这么说吧:
1. 0w低温流动性好,润滑能力强。正常工作温度下,5w粘稠一些,一点点。润滑效果
好。下面数字可以证明。
2. 5w稳定性好,这个是由一个叫NOACK的指标来衡量的。越低越抗挥发。杂质少。下面
penzzoil的 数字可以证明。5w的机油要通过一个 turbocharger formation test,0w
不用。
3. 5w在高温下面,一定的shear rate的时候保持粘稠度的能力。叫HTHS,下面m1的数
据可以证明。
4. Base stock的区别。这个争议最大,有人说0w的好,有人说5w的好。有人说base
stock好的油时间长了不会变稀薄。但是有人说base stock不会变,变得是添加剂,所
以0w添加剂多,所以0w不好。
anyway,我说不很清楚。如果没有高手给个确定说法,还是用厂家规定的油比较保险。
Take Pennzoil Platinum w/Pure Plus:
0W-20
Viscosity @ 100C = 8.3 cSt
NOACK volatility = 10.8
(Unfor... 阅读全帖 |
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g*********r 发帖数: 9366 | 46 【 以下文字转载自 Military 讨论区 】
发信人: flyinhill (伏鸾隐鹄), 信区: Military
标 题: “这里不是天安门广场,这里也不会变成天安门广场。“
发信站: BBS 未名空间站 (Wed Feb 2 13:56:42 2011, 美东)
Egypt Spox: 'This Is Not Tiananmen Square'
From the BBC:
Egyptian foreign ministry spokesman Hossam Zaki defends the conduct of
soldiers in Cairo, telling the BBC: "I think you have seen an unparalleled
degree of high professionalism and of high morals from our armed forces vis-
a-vis our protesters. This is not Tiananmen Square. It will not become
Tianan... 阅读全帖 |
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p**********d 发帖数: 7918 | 47 China calls for domestic unrest to be defused
By Chris Buckley
Mon Feb 21, 7:37 am ET
BEIJING (Reuters) – China must find new ways to defuse unrest, the domestic
security chief said,
underscoring Beijing's anxiety about control after police quashed calls for
gatherings inspired by uprisings
in the Middle East.
A Foreign Ministry official separately blamed the political violence
sweeping the Middle East on too-slow
growth and stunted efforts at reform.
Zhou Yongkang, the ruling Communist Party's ... 阅读全帖 |
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Z**R 发帖数: 1233 | 48 【 以下文字转载自 Military 讨论区 】
发信人: ZZGR (闲逛), 信区: Military
标 题: 【BBC】欧盟特使为巴林警方辩护:开枪只是accidents happen
发信站: BBS 未名空间站 (Thu Mar 24 09:13:59 2011, 美东)
EU envoy defends Bahrain police amid unrest
A top EU diplomat says the police in Bahrain have had a "difficult task"
dealing with opposition protesters and in such situations "accidents happen".
Robert Cooper, special adviser to EU foreign policy chief Baroness Ashton,
was briefing Euro MPs about his fact-finding visit to Bahrain last weekend.
Bahrain's ... 阅读全帖 |
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y*******o 发帖数: 404 | 49 17:46
Egyptian foreign ministry spokesman Hossam Zaki defends the conduct of
soldiers in Cairo, telling the BBC: "I think you have seen an unparalleled
degree of high professionalism and of high morals from our armed forces vis-
a-vis our protesters. This is not Tiananmen Square. It will not become
Tiananmen Square. Tahrir Square will remain a clean symbol for our political
development."
http://www.bbc.co.uk/news/world-middle-east-12307698
This is not Tiananmen Square. It will not become Tiananm... 阅读全帖 |
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